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Diffstat (limited to 'src/gxvalid')
35 files changed, 0 insertions, 9979 deletions
diff --git a/src/gxvalid/Jamfile b/src/gxvalid/Jamfile deleted file mode 100644 index 88049a6..0000000 --- a/src/gxvalid/Jamfile +++ /dev/null @@ -1,33 +0,0 @@ -# FreeType 2 src/gxvalid Jamfile -# -# Copyright 2005 by -# suzuki toshiya, Masatake YAMATO and Red Hat K.K. -# -# This file is part of the FreeType project, and may only be used, modified, -# and distributed under the terms of the FreeType project license, -# LICENSE.TXT. By continuing to use, modify, or distribute this file you -# indicate that you have read the license and understand and accept it -# fully. - -SubDir FT2_TOP $(FT2_SRC_DIR) gxvalid ; - - -{ - local _sources ; - - if $(FT2_MULTI) - { - _sources = gxvcommn gxvfeat gxvbsln gxvtrak gxvopbd gxvprop - gxvmort gxvmort0 gxvmort1 gxvmort2 gxvmort4 gxvmort5 - gxvmorx gxvmorx0 gxvmorx1 gxvmorx2 gxvmorx4 gxvmorx5 - gxvlcar gxvkern gxvmod gxvjust ; - } - else - { - _sources = gxvalid ; - } - - Library $(FT2_LIB) : $(_sources).c ; -} - -# end of src/gxvalid Jamfile diff --git a/src/gxvalid/README b/src/gxvalid/README deleted file mode 100644 index 28e535b..0000000 --- a/src/gxvalid/README +++ /dev/null @@ -1,532 +0,0 @@ -gxvalid: TrueType GX validator -============================== - - -1. What is this ---------------- - - `gxvalid' is a module to validate TrueType GX tables: a collection of - additional tables in TrueType font which are used by `QuickDraw GX - Text', Apple Advanced Typography (AAT). In addition, gxvalid can - validates `kern' tables which have been extended for AAT. Like the - otvalid module, gxvalid uses Freetype 2's validator framework - (ftvalid). - - You can link gxvalid with your program; before running your own layout - engine, gxvalid validates a font file. As the result, you can remove - error-checking code from the layout engine. It is also possible to - use gxvalid as a stand-alone font validator; the `ftvalid' test - program included in the ft2demo bundle calls gxvalid internally. - A stand-alone font validator may be useful for font developers. - - This documents documents the following issues. - - - supported TrueType GX tables - - fundamental validation limitations - - permissive error handling of broken GX tables - - `kern' table issue. - - -2. Supported tables -------------------- - - The following GX tables are currently supported. - - bsln - feat - just - kern(*) - lcar - mort - morx - opbd - prop - trak - - The following GX tables are currently unsupported. - - cvar - fdsc - fmtx - fvar - gvar - Zapf - - The following GX tables won't be supported. - - acnt(**) - hsty(***) - - The following undocumented tables in TrueType fonts designed for Apple - platform aren't handled either. - - addg - CVTM - TPNM - umif - - - *) The `kern' validator handles both the classic and the new kern - formats; the former is supported on both Microsoft and Apple - platforms, while the latter is supported on Apple platforms. - - **) `acnt' tables are not supported by currently available Apple font - tools. - - ***) There is one more Apple extension, `hsty', but it is for - Newton-OS, not GX (Newton-OS is a platform by Apple, but it can - use sfnt- housed bitmap fonts only). Therefore, it should be - excluded from `Apple platform' in the context of TrueType. - gxvalid ignores it as Apple font tools do so. - - - We have checked 183 fonts bundled with MacOS 9.1, MacOS 9.2, MacOS - 10.0, MacOS X 10.1, MSIE for MacOS, and AppleWorks 6.0. In addition, - we have checked 67 Dynalab fonts (designed for MacOS) and 189 Ricoh - fonts (designed for Windows and MacOS dual platforms). The number of - fonts including TrueType GX tables are as follows. - - bsln: 76 - feat: 191 - just: 84 - kern: 59 - lcar: 4 - mort: 326 - morx: 19 - opbd: 4 - prop: 114 - trak: 16 - - Dynalab and Ricoh fonts don't have GX tables except of `feat' and - `mort'. - - -3. Fundamental validation limitations -------------------------------------- - - TrueType GX provides layout information to libraries for font - rasterizers and text layout. gxvalid can check whether the layout - data in a font is conformant to the TrueType GX format specified by - Apple. But gxvalid cannot check a how QuickDraw GX/AAT renderer uses - the stored information. - - 3-1. Validation of State Machine activity - ----------------------------------------- - - QuickDraw GX/AAT uses a `State Machine' to provide `stateful' layout - features, and TrueType GX stores the state transition diagram of - this `State Machine' in a `StateTable' data structure. While the - State Machine receives a series of glyph IDs, the State Machine - starts with `start of text' state, walks around various states and - generates various layout information to the renderer, and finally - reaches the `end of text' state. - - gxvalid can check essential errors like: - - - possibility of state transitions to undefined states - - existence of glyph IDs that the State Machine doesn't know how - to handle - - the State Machine cannot compute the layout information from - given diagram - - These errors can be checked within finite steps, and without the - State Machine itself, because these are `expression' errors of state - transition diagram. - - There is no limitation about how long the State Machine walks - around, so validation of the algorithm in the state transition - diagram requires infinite steps, even if we had a State Machine in - gxvalid. Therefore, the following errors and problems cannot be - checked. - - - existence of states which the State Machine never transits to - - the possibility that the State Machine never reaches `end of - text' - - the possibility of stack underflow/overflow in the State Machine - (in ligature and contextual glyph substitutions, the State - Machine can store 16 glyphs onto its stack) - - In addition, gxvalid doesn't check `temporary glyph IDs' used in the - chained State Machines (in `mort' and `morx' tables). If a layout - feature is implemented by a single State Machine, a glyph ID - converted by the State Machine is passed to the glyph renderer, thus - it should not point to an undefined glyph ID. But if a layout - feature is implemented by chained State Machines, a component State - Machine (if it is not the final one) is permitted to generate - undefined glyph IDs for temporary use, because it is handled by next - component State Machine and not by the glyph renderer. To validate - such temporary glyph IDs, gxvalid must stack all undefined glyph IDs - which can occur in the output of the previous State Machine and - search them in the `ClassTable' structure of the current State - Machine. It is too complex to list all possible glyph IDs from the - StateTable, especially from a ligature substitution table. - - 3-2. Validation of relationship between multiple layout features - ---------------------------------------------------------------- - - gxvalid does not validate the relationship between multiple layout - features at all. - - If multiple layout features are defined in TrueType GX tables, - possible interactions, overrides, and conflicts between layout - features are implicitly given in the font too. For example, there - are several predefined spacing control features: - - - Text Spacing (Proportional/Monospace/Half-width/Normal) - - Number Spacing (Monospaced-numbers/Proportional-numbers) - - Kana Spacing (Full-width/Proportional) - - Ideographic Spacing (Full-width/Proportional) - - CJK Roman Spacing (Half-width/Proportional/Default-roman - /Full-width-roman/Proportional) - - If all layout features are independently managed, we can activate - inconsistent typographic rules like `Text Spacing=Monospace' and - `Ideographic Spacing=Proportional' at the same time. - - The combinations of layout features is managed by a 32bit integer - (one bit each for selector setting), so we can define relationships - between up to 32 features, theoretically. But if one feature - setting affects another feature setting, we need typographic - priority rules to validate the relationship. Unfortunately, the - TrueType GX format specification does not give such information even - for predefined features. - - -4. Permissive error handling of broken GX tables ------------------------------------------------- - - When Apple's font rendering system finds an inconsistency, like a - specification violation or an unspecified value in a TrueType GX - table, it does not always return error. In most cases, the rendering - engine silently ignores such wrong values or even whole tables. In - fact, MacOS is shipped with fonts including broken GX/AAT tables, but - no harmful effects due to `officially broken' fonts are observed by - end-users. - - gxvalid is designed to continue the validation process as long as - possible. When gxvalid find wrong values, gxvalid warns it at least, - and takes a fallback procedure if possible. The fallback procedure - depends on the debug level. - - We used the following three tools to investigate Apple's error handling. - - - FontValidator (for MacOS 8.5 - 9.2) resource fork font - - ftxvalidator (for MacOS X 10.1 -) dfont or naked-sfnt - - ftxdumperfuser (for MacOS X 10.1 -) dfont or naked-sfnt - - However, all tests were done on a PowerPC based Macintosh; at present, - we have not checked those tools on a m68k-based Macintosh. - - In total, we checked 183 fonts bundled to MacOS 9.1, MacOS 9.2, MacOS - 10.0, MacOS X 10.1, MSIE for MacOS, and AppleWorks 6.0. These fonts - are distributed officially, but many broken GX/AAT tables were found - by Apple's font tools. In the following, we list typical violation of - the GX specification, in fonts officially distributed with those Apple - systems. - - 4-1. broken BinSrchHeader (19/183) - ---------------------------------- - - `BinSrchHeader' is a header of a data array for m68k platforms to - access memory efficiently. Although there are only two independent - parameters for real (`unitSize' and `nUnits'), BinSrchHeader has - three additional parameters which can be calculated from `unitSize' - and `nUnits', for fast setup. Apple font tools ignore them - silently, so gxvalid warns if it finds and inconsistency, and always - continues validation. The additional parameters are ignored - regardless of the consistency. - - 19 fonts include such inconsistencies; all breaks are in the - BinSrchHeader structure of the `kern' table. - - 4-2. too-short LookupTable (5/183) - ---------------------------------- - - LookupTable format 0 is a simple array to get a value from a given - GID (glyph ID); the index of this array is a GID too. Therefore, - the length of the array is expected to be same as the maximum GID - value defined in the `maxp' table, but there are some fonts whose - LookupTable format 0 is too short to cover all GIDs. FontValidator - ignores this error silently, ftxvalidator and ftxdumperfuser both - warn and continue. Similar problems are found in format 3 subtables - of `kern'. gxvalid warns always and abort if the validation level - is set to FT_VALIDATE_PARANOID. - - 5 fonts include too-short kern format 0 subtables. - 1 font includes too-short kern format 3 subtable. - - 4-3. broken LookupTable format 2 (1/183) - ---------------------------------------- - - LookupTable format 2, subformat 4 covers the GID space by a - collection of segments which are specified by `firstGlyph' and - `lastGlyph'. Some fonts store `firstGlyph' and `lastGlyph' in - reverse order, so the segment specification is broken. Apple font - tools ignore this error silently; a broken segment is ignored as if - it did not exist. gxvalid warns and normalize the segment at - FT_VALIDATE_DEFAULT, or ignore the segment at FT_VALIDATE_TIGHT, or - abort at FT_VALIDATE_PARANOID. - - 1 font includes broken LookupTable format 2, in the `just' table. - - *) It seems that all fonts manufactured by ITC for AppleWorks have - this error. - - 4-4. bad bracketing in glyph property (14/183) - ---------------------------------------------- - - GX/AAT defines a `bracketing' property of the glyphs in the `prop' - table, to control layout features of strings enclosed inside and - outside of brackets. Some fonts give inappropriate bracket - properties to glyphs. Apple font tools warn about this error; - gxvalid warns too and aborts at FT_VALIDATE_PARANOID. - - 14 fonts include wrong bracket properties. - - - 4-5. invalid feature number (117/183) - ------------------------------------- - - The GX/AAT extension can include 255 different layout features, but - popular layout features are predefined (see - http://developer.apple.com/fonts/Registry/index.html). Some fonts - include feature numbers which are incompatible with the predefined - feature registry. - - In our survey, there are 140 fonts including `feat' table. - - a) 67 fonts use a feature number which should not be used. - b) 117 fonts set the wrong feature range (nSetting). This is mostly - found in the `mort' and `morx' tables. - - Apple font tools give no warning, although they cannot recognize - what the feature is. At FT_VALIDATE_DEFAULT, gxvalid warns but - continues in both cases (a, b). At FT_VALIDATE_TIGHT, gxvalid warns - and aborts for (a), but continues for (b). At FT_VALIDATE_PARANOID, - gxvalid warns and aborts in both cases (a, b). - - 4-6. invalid prop version (10/183) - ---------------------------------- - - As most TrueType GX tables, the `prop' table must start with a 32bit - version identifier: 0x00010000, 0x00020000 or 0x00030000. But some - fonts store nonsense binary data instead. When Apple font tools - find them, they abort the processing immediately, and the data which - follows is unhandled. gxvalid does the same. - - 10 fonts include broken `prop' version. - - All of these fonts are classic TrueType fonts for the Japanese - script, manufactured by Apple. - - 4-7. unknown resource name (2/183) - ------------------------------------ - - NOTE: THIS IS NOT A TRUETYPE GX ERROR. - - If a TrueType font is stored in the resource fork or in dfont - format, the data must be tagged as `sfnt' in the resource fork index - to invoke TrueType font handler for the data. But the TrueType font - data in `Keyboard.dfont' is tagged as `kbd', and that in - `LastResort.dfont' is tagged as `lst'. Apple font tools can detect - that the data is in TrueType format and successfully validate them. - Maybe this is possible because they are known to be dfont. The - current implementation of the resource fork driver of FreeType - cannot do that, thus gxvalid cannot validate them. - - 2 fonts use an unknown tag for the TrueType font resource. - -5. `kern' table issues ----------------------- - - In common terminology of TrueType, `kern' is classified as a basic and - platform-independent table. But there are Apple extensions of `kern', - and there is an extension which requires a GX state machine for - contextual kerning. Therefore, gxvalid includes a special validator - for `kern' tables. Unfortunately, there is no exact algorithm to - check Apple's extension, so gxvalid includes a heuristic algorithm to - find the proper validation routines for all possible data formats, - including the data format for Microsoft. By calling - classic_kern_validate() instead of gxv_validate(), you can specify the - `kern' format explicitly. However, current FreeType2 uses Microsoft - `kern' format only, others are ignored (and should be handled in a - library one level higher than FreeType). - - 5-1. History - ------------ - - The original 16bit version of `kern' was designed by Apple in the - pre-GX era, and it was also approved by Microsoft. Afterwards, - Apple designed a new 32bit version of the `kern' table. According - to the documentation, the difference between the 16bit and 32bit - version is only the size of variables in the `kern' header. In the - following, we call the original 16bit version as `classic', and - 32bit version as `new'. - - 5-2. Versions and dialects which should be differentiated - --------------------------------------------------------- - - The `kern' table consists of a table header and several subtables. - The version number which identifies a `classic' or a `new' version - is explicitly written in the table header, but there are - undocumented differences between Microsoft's and Apple's formats. - It is called a `dialect' in the following. There are three cases - which should be handled: the new Apple-dialect, the classic - Apple-dialect, and the classic Microsoft-dialect. An analysis of - the formats and the auto detection algorithm of gxvalid is described - in the following. - - 5-2-1. Version detection: classic and new kern - ---------------------------------------------- - - According to Apple TrueType specification, there are only two - differences between the classic and the new: - - - The `kern' table header starts with the version number. - The classic version starts with 0x0000 (16bit), - the new version starts with 0x00010000 (32bit). - - - In the `kern' table header, the number of subtables follows - the version number. - In the classic version, it is stored as a 16bit value. - In the new version, it is stored as a 32bit value. - - From Apple font tool's output (DumpKERN is also tested in addition - to the three Apple font tools in above), there is another - undocumented difference. In the new version, the subtable header - includes a 16bit variable named `tupleIndex' which does not exist - in the classic version. - - The new version can store all subtable formats (0, 1, 2, and 3), - but the Apple TrueType specification does not mention the subtable - formats available in the classic version. - - 5-2-2. Available subtable formats in classic version - ---------------------------------------------------- - - Although the Apple TrueType specification recommends to use the - classic version in the case if the font is designed for both the - Apple and Microsoft platforms, it does not document the available - subtable formats in the classic version. - - According to the Microsoft TrueType specification, the subtable - format assured for Windows and OS/2 support is only subtable - format 0. The Microsoft TrueType specification also describes - subtable format 2, but does not mention which platforms support - it. Aubtable formats 1, 3, and higher are documented as reserved - for future use. Therefore, the classic version can store subtable - formats 0 and 2, at least. `ttfdump.exe', a font tool provided by - Microsoft, ignores the subtable format written in the subtable - header, and parses the table as if all subtables are in format 0. - - `kern' subtable format 1 uses a StateTable, so it cannot be - utilized without a GX State Machine. Therefore, it is reasonable - to assume that format 1 (and 3) were introduced after Apple had - introduced GX and moved to the new 32bit version. - - 5-2-3. Apple and Microsoft dialects - ----------------------------------- - - The `kern' subtable has a 16bit `coverage' field to describe - kerning attributes, but bit interpretations by Apple and Microsoft - are different: For example, Apple uses bits 0-7 to identify the - subtable, while Microsoft uses bits 8-15. - - In addition, due to the output of DumpKERN and FontValidator, - Apple's bit interpretations of coverage in classic and new version - are incompatible also. In summary, there are three dialects: - classic Apple dialect, classic Microsoft dialect, and new Apple - dialect. The classic Microsoft dialect and the new Apple dialect - are documented by each vendors' TrueType font specification, but - the documentation for classic Apple dialect is not available. - - For example, in the new Apple dialect, bit 15 is documented as - `set to 1 if the kerning is vertical'. On the other hand, in - classic Microsoft dialect, bit 1 is documented as `set to 1 if the - kerning is horizontal'. From the outputs of DumpKERN and - FontValidator, classic Apple dialect recognizes 15 as `set to 1 - when the kerning is horizontal'. From the results of similar - experiments, classic Apple dialect seems to be the Endian reverse - of the classic Microsoft dialect. - - As a conclusion it must be noted that no font tool can identify - classic Apple dialect or classic Microsoft dialect automatically. - - 5-2-4. gxvalid auto dialect detection algorithm - ----------------------------------------------- - - The first 16 bits of the `kern' table are enough to identify the - version: - - - if the first 16 bits are 0x0000, the `kern' table is in - classic Apple dialect or classic Microsoft dialect - - if the first 16 bits are 0x0001, and next 16 bits are 0x0000, - the kern table is in new Apple dialect. - - If the `kern' table is a classic one, the 16bit `coverage' field - is checked next. Firstly, the coverage bits are decoded for the - classic Apple dialect using the following bit masks (this is based - on DumpKERN output): - - 0x8000: 1=horizontal, 0=vertical - 0x4000: not used - 0x2000: 1=cross-stream, 0=normal - 0x1FF0: reserved - 0x000F: subtable format - - If any of reserved bits are set or the subtable bits is - interpreted as format 1 or 3, we take it as `impossible in classic - Apple dialect' and retry, using the classic Microsoft dialect. - - The most popular coverage in new Apple-dialect: 0x8000, - The most popular coverage in classic Apple-dialect: 0x0000, - The most popular coverage in classic Microsoft dialect: 0x0001. - - 5-3. Tested fonts - ----------------- - - We checked 59 fonts bundled with MacOS and 38 fonts bundled with - Windows, where all font include a `kern' table. - - - fonts bundled with MacOS - * new Apple dialect - format 0: 18 - format 2: 1 - format 3: 1 - * classic Apple dialect - format 0: 14 - * classic Microsoft dialect - format 0: 15 - - - fonts bundled with Windows - * classic Microsoft dialect - format 0: 38 - - It looks strange that classic Microsoft-dialect fonts are bundled to - MacOS: they come from MSIE for MacOS, except of MarkerFelt.dfont. - - - ACKNOWLEDGEMENT - --------------- - - Some parts of gxvalid are derived from both the `gxlayout' module and - the `otvalid' module. Development of gxlayout was supported by the - Information-technology Promotion Agency(IPA), Japan. - - The detailed analysis of undefined glyph ID utilization in `mort' and - `morx' tables is provided by George Williams. - ------------------------------------------------------------------------- - -Copyright 2004, 2005, 2007 by -suzuki toshiya, Masatake YAMATO, Red hat K.K., -David Turner, Robert Wilhelm, and Werner Lemberg. - -This file is part of the FreeType project, and may only be used, -modified, and distributed under the terms of the FreeType project -license, LICENSE.TXT. By continuing to use, modify, or distribute this -file you indicate that you have read the license and understand and -accept it fully. - - ---- end of README --- diff --git a/src/gxvalid/gxvalid.c b/src/gxvalid/gxvalid.c deleted file mode 100644 index bc36e67..0000000 --- a/src/gxvalid/gxvalid.c +++ /dev/null @@ -1,46 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvalid.c */ -/* */ -/* FreeType validator for TrueTypeGX/AAT tables (body only). */ -/* */ -/* Copyright 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -#define FT_MAKE_OPTION_SINGLE_OBJECT - -#include <ft2build.h> - -#include "gxvfeat.c" -#include "gxvcommn.c" -#include "gxvbsln.c" -#include "gxvtrak.c" -#include "gxvjust.c" -#include "gxvmort.c" -#include "gxvmort0.c" -#include "gxvmort1.c" -#include "gxvmort2.c" -#include "gxvmort4.c" -#include "gxvmort5.c" -#include "gxvmorx.c" -#include "gxvmorx0.c" -#include "gxvmorx1.c" -#include "gxvmorx2.c" -#include "gxvmorx4.c" -#include "gxvmorx5.c" -#include "gxvkern.c" -#include "gxvopbd.c" -#include "gxvprop.c" -#include "gxvlcar.c" -#include "gxvmod.c" - - -/* END */ diff --git a/src/gxvalid/gxvalid.h b/src/gxvalid/gxvalid.h deleted file mode 100644 index 27be9ec..0000000 --- a/src/gxvalid/gxvalid.h +++ /dev/null @@ -1,107 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvalid.h */ -/* */ -/* TrueTyeeGX/AAT table validation (specification only). */ -/* */ -/* Copyright 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#ifndef __GXVALID_H__ -#define __GXVALID_H__ - -#include <ft2build.h> -#include FT_FREETYPE_H - -#include "gxverror.h" /* must come before FT_INTERNAL_VALIDATE_H */ - -#include FT_INTERNAL_VALIDATE_H -#include FT_INTERNAL_STREAM_H - - -FT_BEGIN_HEADER - - - FT_LOCAL( void ) - gxv_feat_validate( FT_Bytes table, - FT_Face face, - FT_Validator valid ); - - - FT_LOCAL( void ) - gxv_bsln_validate( FT_Bytes table, - FT_Face face, - FT_Validator valid ); - - - FT_LOCAL( void ) - gxv_trak_validate( FT_Bytes table, - FT_Face face, - FT_Validator valid ); - - FT_LOCAL( void ) - gxv_just_validate( FT_Bytes table, - FT_Face face, - FT_Validator valid ); - - FT_LOCAL( void ) - gxv_mort_validate( FT_Bytes table, - FT_Face face, - FT_Validator valid ); - - FT_LOCAL( void ) - gxv_morx_validate( FT_Bytes table, - FT_Face face, - FT_Validator valid ); - - FT_LOCAL( void ) - gxv_kern_validate( FT_Bytes table, - FT_Face face, - FT_Validator valid ); - - FT_LOCAL( void ) - gxv_kern_validate_classic( FT_Bytes table, - FT_Face face, - FT_Int dialect_flags, - FT_Validator valid ); - - FT_LOCAL( void ) - gxv_opbd_validate( FT_Bytes table, - FT_Face face, - FT_Validator valid ); - - FT_LOCAL( void ) - gxv_prop_validate( FT_Bytes table, - FT_Face face, - FT_Validator valid ); - - FT_LOCAL( void ) - gxv_lcar_validate( FT_Bytes table, - FT_Face face, - FT_Validator valid ); - - -FT_END_HEADER - - -#endif /* __GXVALID_H__ */ - - -/* END */ diff --git a/src/gxvalid/gxvbsln.c b/src/gxvalid/gxvbsln.c deleted file mode 100644 index 6cca658..0000000 --- a/src/gxvalid/gxvbsln.c +++ /dev/null @@ -1,333 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvbsln.c */ -/* */ -/* TrueTypeGX/AAT bsln table validation (body). */ -/* */ -/* Copyright 2004, 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvalid.h" -#include "gxvcommn.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvbsln - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** Data and Types *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - -#define GXV_BSLN_VALUE_COUNT 32 -#define GXV_BSLN_VALUE_EMPTY 0xFFFFU - - - typedef struct GXV_bsln_DataRec_ - { - FT_Bytes ctlPoints_p; - FT_UShort defaultBaseline; - - } GXV_bsln_DataRec, *GXV_bsln_Data; - - -#define GXV_BSLN_DATA( field ) GXV_TABLE_DATA( bsln, field ) - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** UTILITY FUNCTIONS *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - static void - gxv_bsln_LookupValue_validate( FT_UShort glyph, - GXV_LookupValueDesc value, - GXV_Validator valid ) - { - FT_UShort v = value.u; - FT_UShort* ctlPoints; - - FT_UNUSED( glyph ); - - - GXV_NAME_ENTER( "lookup value" ); - - if ( v >= GXV_BSLN_VALUE_COUNT ) - FT_INVALID_DATA; - - ctlPoints = (FT_UShort*)GXV_BSLN_DATA( ctlPoints_p ); - if ( ctlPoints && ctlPoints[v] == GXV_BSLN_VALUE_EMPTY ) - FT_INVALID_DATA; - - GXV_EXIT; - } - - - /* - +===============+ --------+ - | lookup header | | - +===============+ | - | BinSrchHeader | | - +===============+ | - | lastGlyph[0] | | - +---------------+ | - | firstGlyph[0] | | head of lookup table - +---------------+ | + - | offset[0] | -> | offset [byte] - +===============+ | + - | lastGlyph[1] | | (glyphID - firstGlyph) * 2 [byte] - +---------------+ | - | firstGlyph[1] | | - +---------------+ | - | offset[1] | | - +===============+ | - | - ... | - | - 16bit value array | - +===============+ | - | value | <-------+ - ... - */ - - static GXV_LookupValueDesc - gxv_bsln_LookupFmt4_transit( FT_UShort relative_gindex, - GXV_LookupValueDesc base_value, - FT_Bytes lookuptbl_limit, - GXV_Validator valid ) - { - FT_Bytes p; - FT_Bytes limit; - FT_UShort offset; - GXV_LookupValueDesc value; - - /* XXX: check range ? */ - offset = (FT_UShort)( base_value.u + - ( relative_gindex * sizeof ( FT_UShort ) ) ); - - p = valid->lookuptbl_head + offset; - limit = lookuptbl_limit; - GXV_LIMIT_CHECK( 2 ); - - value.u = FT_NEXT_USHORT( p ); - - return value; - } - - - static void - gxv_bsln_parts_fmt0_validate( FT_Bytes tables, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = tables; - - - GXV_NAME_ENTER( "parts format 0" ); - - /* deltas */ - GXV_LIMIT_CHECK( 2 * GXV_BSLN_VALUE_COUNT ); - - valid->table_data = NULL; /* No ctlPoints here. */ - - GXV_EXIT; - } - - - static void - gxv_bsln_parts_fmt1_validate( FT_Bytes tables, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = tables; - - - GXV_NAME_ENTER( "parts format 1" ); - - /* deltas */ - gxv_bsln_parts_fmt0_validate( p, limit, valid ); - - /* mappingData */ - valid->lookupval_sign = GXV_LOOKUPVALUE_UNSIGNED; - valid->lookupval_func = gxv_bsln_LookupValue_validate; - valid->lookupfmt4_trans = gxv_bsln_LookupFmt4_transit; - gxv_LookupTable_validate( p + 2 * GXV_BSLN_VALUE_COUNT, - limit, - valid ); - - GXV_EXIT; - } - - - static void - gxv_bsln_parts_fmt2_validate( FT_Bytes tables, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = tables; - - FT_UShort stdGlyph; - FT_UShort ctlPoint; - FT_Int i; - - FT_UShort defaultBaseline = GXV_BSLN_DATA( defaultBaseline ); - - - GXV_NAME_ENTER( "parts format 2" ); - - GXV_LIMIT_CHECK( 2 + ( 2 * GXV_BSLN_VALUE_COUNT ) ); - - /* stdGlyph */ - stdGlyph = FT_NEXT_USHORT( p ); - GXV_TRACE(( " (stdGlyph = %u)\n", stdGlyph )); - - gxv_glyphid_validate( stdGlyph, valid ); - - /* Record the position of ctlPoints */ - GXV_BSLN_DATA( ctlPoints_p ) = p; - - /* ctlPoints */ - for ( i = 0; i < GXV_BSLN_VALUE_COUNT; i++ ) - { - ctlPoint = FT_NEXT_USHORT( p ); - if ( ctlPoint == GXV_BSLN_VALUE_EMPTY ) - { - if ( i == defaultBaseline ) - FT_INVALID_DATA; - } - else - gxv_ctlPoint_validate( stdGlyph, (FT_Short)ctlPoint, valid ); - } - - GXV_EXIT; - } - - - static void - gxv_bsln_parts_fmt3_validate( FT_Bytes tables, - FT_Bytes limit, - GXV_Validator valid) - { - FT_Bytes p = tables; - - - GXV_NAME_ENTER( "parts format 3" ); - - /* stdGlyph + ctlPoints */ - gxv_bsln_parts_fmt2_validate( p, limit, valid ); - - /* mappingData */ - valid->lookupval_sign = GXV_LOOKUPVALUE_UNSIGNED; - valid->lookupval_func = gxv_bsln_LookupValue_validate; - valid->lookupfmt4_trans = gxv_bsln_LookupFmt4_transit; - gxv_LookupTable_validate( p + ( 2 + 2 * GXV_BSLN_VALUE_COUNT ), - limit, - valid ); - - GXV_EXIT; - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** bsln TABLE *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - FT_LOCAL_DEF( void ) - gxv_bsln_validate( FT_Bytes table, - FT_Face face, - FT_Validator ftvalid ) - { - GXV_ValidatorRec validrec; - GXV_Validator valid = &validrec; - - GXV_bsln_DataRec bslnrec; - GXV_bsln_Data bsln = &bslnrec; - - FT_Bytes p = table; - FT_Bytes limit = 0; - - FT_ULong version; - FT_UShort format; - FT_UShort defaultBaseline; - - GXV_Validate_Func fmt_funcs_table [] = - { - gxv_bsln_parts_fmt0_validate, - gxv_bsln_parts_fmt1_validate, - gxv_bsln_parts_fmt2_validate, - gxv_bsln_parts_fmt3_validate, - }; - - - valid->root = ftvalid; - valid->table_data = bsln; - valid->face = face; - - FT_TRACE3(( "validating `bsln' table\n" )); - GXV_INIT; - - - GXV_LIMIT_CHECK( 4 + 2 + 2 ); - version = FT_NEXT_ULONG( p ); - format = FT_NEXT_USHORT( p ); - defaultBaseline = FT_NEXT_USHORT( p ); - - /* only version 1.0 is defined (1996) */ - if ( version != 0x00010000UL ) - FT_INVALID_FORMAT; - - /* only format 1, 2, 3 are defined (1996) */ - GXV_TRACE(( " (format = %d)\n", format )); - if ( format > 3 ) - FT_INVALID_FORMAT; - - if ( defaultBaseline > 31 ) - FT_INVALID_FORMAT; - - bsln->defaultBaseline = defaultBaseline; - - fmt_funcs_table[format]( p, limit, valid ); - - FT_TRACE4(( "\n" )); - } - - -/* arch-tag: ebe81143-fdaa-4c68-a4d1-b57227daa3bc - (do not change this comment) */ - - -/* END */ diff --git a/src/gxvalid/gxvcommn.c b/src/gxvalid/gxvcommn.c deleted file mode 100644 index 82fd6b3..0000000 --- a/src/gxvalid/gxvcommn.c +++ /dev/null @@ -1,1758 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvcommn.c */ -/* */ -/* TrueTypeGX/AAT common tables validation (body). */ -/* */ -/* Copyright 2004, 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvcommn.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvcommon - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** 16bit offset sorter *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - static int - gxv_compare_ushort_offset( FT_UShort* a, - FT_UShort* b ) - { - if ( *a < *b ) - return ( -1 ); - else if ( *a > *b ) - return ( 1 ); - else - return ( 0 ); - } - - - FT_LOCAL_DEF( void ) - gxv_set_length_by_ushort_offset( FT_UShort* offset, - FT_UShort** length, - FT_UShort* buff, - FT_UInt nmemb, - FT_UShort limit, - GXV_Validator valid ) - { - FT_UInt i; - - - for ( i = 0; i < nmemb; i++ ) - *(length[i]) = 0; - - for ( i = 0; i < nmemb; i++ ) - buff[i] = offset[i]; - buff[nmemb] = limit; - - ft_qsort( buff, ( nmemb + 1 ), sizeof ( FT_UShort ), - ( int(*)(const void*, const void*) )gxv_compare_ushort_offset ); - - if ( buff[nmemb] > limit ) - FT_INVALID_OFFSET; - - for ( i = 0; i < nmemb; i++ ) - { - FT_UInt j; - - - for ( j = 0; j < nmemb; j++ ) - if ( buff[j] == offset[i] ) - break; - - if ( j == nmemb ) - FT_INVALID_OFFSET; - - *(length[i]) = (FT_UShort)( buff[j + 1] - buff[j] ); - - if ( 0 != offset[i] && 0 == *(length[i]) ) - FT_INVALID_OFFSET; - } - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** 32bit offset sorter *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - static int - gxv_compare_ulong_offset( FT_ULong* a, - FT_ULong* b ) - { - if ( *a < *b ) - return ( -1 ); - else if ( *a > *b ) - return ( 1 ); - else - return ( 0 ); - } - - - FT_LOCAL_DEF( void ) - gxv_set_length_by_ulong_offset( FT_ULong* offset, - FT_ULong** length, - FT_ULong* buff, - FT_UInt nmemb, - FT_ULong limit, - GXV_Validator valid) - { - FT_UInt i; - - - for ( i = 0; i < nmemb; i++ ) - *(length[i]) = 0; - - for ( i = 0; i < nmemb; i++ ) - buff[i] = offset[i]; - buff[nmemb] = limit; - - ft_qsort( buff, ( nmemb + 1 ), sizeof ( FT_ULong ), - ( int(*)(const void*, const void*) )gxv_compare_ulong_offset ); - - if ( buff[nmemb] > limit ) - FT_INVALID_OFFSET; - - for ( i = 0; i < nmemb; i++ ) - { - FT_UInt j; - - - for ( j = 0; j < nmemb; j++ ) - if ( buff[j] == offset[i] ) - break; - - if ( j == nmemb ) - FT_INVALID_OFFSET; - - *(length[i]) = buff[j + 1] - buff[j]; - - if ( 0 != offset[i] && 0 == *(length[i]) ) - FT_INVALID_OFFSET; - } - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** scan value array and get min & max *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - - FT_LOCAL_DEF( void ) - gxv_array_getlimits_byte( FT_Bytes table, - FT_Bytes limit, - FT_Byte* min, - FT_Byte* max, - GXV_Validator valid ) - { - FT_Bytes p = table; - - - *min = 0xFF; - *max = 0x00; - - while ( p < limit ) - { - FT_Byte val; - - - GXV_LIMIT_CHECK( 1 ); - val = FT_NEXT_BYTE( p ); - - *min = (FT_Byte)FT_MIN( *min, val ); - *max = (FT_Byte)FT_MAX( *max, val ); - } - - valid->subtable_length = p - table; - } - - - FT_LOCAL_DEF( void ) - gxv_array_getlimits_ushort( FT_Bytes table, - FT_Bytes limit, - FT_UShort* min, - FT_UShort* max, - GXV_Validator valid ) - { - FT_Bytes p = table; - - - *min = 0xFFFFU; - *max = 0x0000; - - while ( p < limit ) - { - FT_UShort val; - - - GXV_LIMIT_CHECK( 2 ); - val = FT_NEXT_USHORT( p ); - - *min = (FT_Byte)FT_MIN( *min, val ); - *max = (FT_Byte)FT_MAX( *max, val ); - } - - valid->subtable_length = p - table; - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** BINSEARCHHEADER *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - typedef struct GXV_BinSrchHeader_ - { - FT_UShort unitSize; - FT_UShort nUnits; - FT_UShort searchRange; - FT_UShort entrySelector; - FT_UShort rangeShift; - - } GXV_BinSrchHeader; - - - static void - gxv_BinSrchHeader_check_consistency( GXV_BinSrchHeader* binSrchHeader, - GXV_Validator valid ) - { - FT_UShort searchRange; - FT_UShort entrySelector; - FT_UShort rangeShift; - - - if ( binSrchHeader->unitSize == 0 ) - FT_INVALID_DATA; - - if ( binSrchHeader->nUnits == 0 ) - { - if ( binSrchHeader->searchRange == 0 && - binSrchHeader->entrySelector == 0 && - binSrchHeader->rangeShift == 0 ) - return; - else - FT_INVALID_DATA; - } - - for ( searchRange = 1, entrySelector = 1; - ( searchRange * 2 ) <= binSrchHeader->nUnits && - searchRange < 0x8000U; - searchRange *= 2, entrySelector++ ) - ; - - entrySelector--; - searchRange = (FT_UShort)( searchRange * binSrchHeader->unitSize ); - rangeShift = (FT_UShort)( binSrchHeader->nUnits * binSrchHeader->unitSize - - searchRange ); - - if ( searchRange != binSrchHeader->searchRange || - entrySelector != binSrchHeader->entrySelector || - rangeShift != binSrchHeader->rangeShift ) - { - GXV_TRACE(( "Inconsistency found in BinSrchHeader\n" )); - GXV_TRACE(( "originally: unitSize=%d, nUnits=%d, " - "searchRange=%d, entrySelector=%d, " - "rangeShift=%d\n", - binSrchHeader->unitSize, binSrchHeader->nUnits, - binSrchHeader->searchRange, binSrchHeader->entrySelector, - binSrchHeader->rangeShift )); - GXV_TRACE(( "calculated: unitSize=%d, nUnits=%d, " - "searchRange=%d, entrySelector=%d, " - "rangeShift=%d\n", - binSrchHeader->unitSize, binSrchHeader->nUnits, - searchRange, entrySelector, rangeShift )); - - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_DATA; - } - } - - - /* - * parser & validator of BinSrchHeader - * which is used in LookupTable format 2, 4, 6. - * - * Essential parameters (unitSize, nUnits) are returned by - * given pointer, others (searchRange, entrySelector, rangeShift) - * can be calculated by essential parameters, so they are just - * validated and discarded. - * - * However, wrong values in searchRange, entrySelector, rangeShift - * won't cause fatal errors, because these parameters might be - * only used in old m68k font driver in MacOS. - * -- suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp> - */ - - FT_LOCAL_DEF( void ) - gxv_BinSrchHeader_validate( FT_Bytes table, - FT_Bytes limit, - FT_UShort* unitSize_p, - FT_UShort* nUnits_p, - GXV_Validator valid ) - { - FT_Bytes p = table; - GXV_BinSrchHeader binSrchHeader; - - - GXV_NAME_ENTER( "BinSrchHeader validate" ); - - if ( *unitSize_p == 0 ) - { - GXV_LIMIT_CHECK( 2 ); - binSrchHeader.unitSize = FT_NEXT_USHORT( p ); - } - else - binSrchHeader.unitSize = *unitSize_p; - - if ( *nUnits_p == 0 ) - { - GXV_LIMIT_CHECK( 2 ); - binSrchHeader.nUnits = FT_NEXT_USHORT( p ); - } - else - binSrchHeader.nUnits = *nUnits_p; - - GXV_LIMIT_CHECK( 2 + 2 + 2 ); - binSrchHeader.searchRange = FT_NEXT_USHORT( p ); - binSrchHeader.entrySelector = FT_NEXT_USHORT( p ); - binSrchHeader.rangeShift = FT_NEXT_USHORT( p ); - GXV_TRACE(( "nUnits %d\n", binSrchHeader.nUnits )); - - gxv_BinSrchHeader_check_consistency( &binSrchHeader, valid ); - - if ( *unitSize_p == 0 ) - *unitSize_p = binSrchHeader.unitSize; - - if ( *nUnits_p == 0 ) - *nUnits_p = binSrchHeader.nUnits; - - valid->subtable_length = p - table; - GXV_EXIT; - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** LOOKUP TABLE *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - -#define GXV_LOOKUP_VALUE_LOAD( P, SIGNSPEC ) \ - ( P += 2, gxv_lookup_value_load( P - 2, SIGNSPEC ) ) - - static GXV_LookupValueDesc - gxv_lookup_value_load( FT_Bytes p, - int signspec ) - { - GXV_LookupValueDesc v; - - - if ( signspec == GXV_LOOKUPVALUE_UNSIGNED ) - v.u = FT_NEXT_USHORT( p ); - else - v.s = FT_NEXT_SHORT( p ); - - return v; - } - - -#define GXV_UNITSIZE_VALIDATE( FORMAT, UNITSIZE, NUNITS, CORRECTSIZE ) \ - FT_BEGIN_STMNT \ - if ( UNITSIZE != CORRECTSIZE ) \ - { \ - FT_ERROR(( "unitSize=%d differs from" \ - "expected unitSize=%d" \ - "in LookupTable %s", \ - UNITSIZE, CORRECTSIZE, FORMAT )); \ - if ( UNITSIZE != 0 && NUNITS != 0 ) \ - { \ - FT_ERROR(( " cannot validate anymore\n" )); \ - FT_INVALID_FORMAT; \ - } \ - else \ - FT_ERROR(( " forcibly continues\n" )); \ - } \ - FT_END_STMNT - - - /* ================= Simple Array Format 0 Lookup Table ================ */ - static void - gxv_LookupTable_fmt0_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UShort i; - - GXV_LookupValueDesc value; - - - GXV_NAME_ENTER( "LookupTable format 0" ); - - GXV_LIMIT_CHECK( 2 * valid->face->num_glyphs ); - - for ( i = 0; i < valid->face->num_glyphs; i++ ) - { - GXV_LIMIT_CHECK( 2 ); - if ( p + 2 >= limit ) /* some fonts have too-short fmt0 array */ - { - GXV_TRACE(( "too short, glyphs %d - %d are missing\n", - i, valid->face->num_glyphs )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_GLYPH_ID; - break; - } - - value = GXV_LOOKUP_VALUE_LOAD( p, valid->lookupval_sign ); - valid->lookupval_func( i, value, valid ); - } - - valid->subtable_length = p - table; - GXV_EXIT; - } - - - /* ================= Segment Single Format 2 Loolup Table ============== */ - /* - * Apple spec says: - * - * To guarantee that a binary search terminates, you must include one or - * more special `end of search table' values at the end of the data to - * be searched. The number of termination values that need to be - * included is table-specific. The value that indicates binary search - * termination is 0xFFFF. - * - * The problem is that nUnits does not include this end-marker. It's - * quite difficult to discriminate whether the following 0xFFFF comes from - * the end-marker or some next data. - * - * -- suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp> - */ - static void - gxv_LookupTable_fmt2_skip_endmarkers( FT_Bytes table, - FT_UShort unitSize, - GXV_Validator valid ) - { - FT_Bytes p = table; - - - while ( ( p + 4 ) < valid->root->limit ) - { - if ( p[0] != 0xFF || p[1] != 0xFF || /* lastGlyph */ - p[2] != 0xFF || p[3] != 0xFF ) /* firstGlyph */ - break; - p += unitSize; - } - - valid->subtable_length = p - table; - } - - - static void - gxv_LookupTable_fmt2_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UShort gid; - - FT_UShort unitSize; - FT_UShort nUnits; - FT_UShort unit; - FT_UShort lastGlyph; - FT_UShort firstGlyph; - GXV_LookupValueDesc value; - - - GXV_NAME_ENTER( "LookupTable format 2" ); - - unitSize = nUnits = 0; - gxv_BinSrchHeader_validate( p, limit, &unitSize, &nUnits, valid ); - p += valid->subtable_length; - - GXV_UNITSIZE_VALIDATE( "format2", unitSize, nUnits, 6 ); - - for ( unit = 0, gid = 0; unit < nUnits; unit++ ) - { - GXV_LIMIT_CHECK( 2 + 2 + 2 ); - lastGlyph = FT_NEXT_USHORT( p ); - firstGlyph = FT_NEXT_USHORT( p ); - value = GXV_LOOKUP_VALUE_LOAD( p, valid->lookupval_sign ); - - gxv_glyphid_validate( firstGlyph, valid ); - gxv_glyphid_validate( lastGlyph, valid ); - - if ( lastGlyph < gid ) - { - GXV_TRACE(( "reverse ordered segment specification:" - " lastGlyph[%d]=%d < lastGlyph[%d]=%d\n", - unit, lastGlyph, unit - 1 , gid )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_GLYPH_ID; - } - - if ( lastGlyph < firstGlyph ) - { - GXV_TRACE(( "reverse ordered range specification at unit %d:", - " lastGlyph %d < firstGlyph %d ", - unit, lastGlyph, firstGlyph )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_GLYPH_ID; - - if ( valid->root->level == FT_VALIDATE_TIGHT ) - continue; /* ftxvalidator silently skips such an entry */ - - FT_TRACE4(( "continuing with exchanged values\n" )); - gid = firstGlyph; - firstGlyph = lastGlyph; - lastGlyph = gid; - } - - for ( gid = firstGlyph; gid <= lastGlyph; gid++ ) - valid->lookupval_func( gid, value, valid ); - } - - gxv_LookupTable_fmt2_skip_endmarkers( p, unitSize, valid ); - p += valid->subtable_length; - - valid->subtable_length = p - table; - GXV_EXIT; - } - - - /* ================= Segment Array Format 4 Lookup Table =============== */ - static void - gxv_LookupTable_fmt4_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UShort unit; - FT_UShort gid; - - FT_UShort unitSize; - FT_UShort nUnits; - FT_UShort lastGlyph; - FT_UShort firstGlyph; - GXV_LookupValueDesc base_value; - GXV_LookupValueDesc value; - - - GXV_NAME_ENTER( "LookupTable format 4" ); - - unitSize = nUnits = 0; - gxv_BinSrchHeader_validate( p, limit, &unitSize, &nUnits, valid ); - p += valid->subtable_length; - - GXV_UNITSIZE_VALIDATE( "format4", unitSize, nUnits, 6 ); - - for ( unit = 0, gid = 0; unit < nUnits; unit++ ) - { - GXV_LIMIT_CHECK( 2 + 2 ); - lastGlyph = FT_NEXT_USHORT( p ); - firstGlyph = FT_NEXT_USHORT( p ); - - gxv_glyphid_validate( firstGlyph, valid ); - gxv_glyphid_validate( lastGlyph, valid ); - - if ( lastGlyph < gid ) - { - GXV_TRACE(( "reverse ordered segment specification:" - " lastGlyph[%d]=%d < lastGlyph[%d]=%d\n", - unit, lastGlyph, unit - 1 , gid )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_GLYPH_ID; - } - - if ( lastGlyph < firstGlyph ) - { - GXV_TRACE(( "reverse ordered range specification at unit %d:", - " lastGlyph %d < firstGlyph %d ", - unit, lastGlyph, firstGlyph )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_GLYPH_ID; - - if ( valid->root->level == FT_VALIDATE_TIGHT ) - continue; /* ftxvalidator silently skips such an entry */ - - FT_TRACE4(( "continuing with exchanged values\n" )); - gid = firstGlyph; - firstGlyph = lastGlyph; - lastGlyph = gid; - } - - GXV_LIMIT_CHECK( 2 ); - base_value = GXV_LOOKUP_VALUE_LOAD( p, GXV_LOOKUPVALUE_UNSIGNED ); - - for ( gid = firstGlyph; gid <= lastGlyph; gid++ ) - { - value = valid->lookupfmt4_trans( (FT_UShort)( gid - firstGlyph ), - base_value, - limit, - valid ); - - valid->lookupval_func( gid, value, valid ); - } - } - - gxv_LookupTable_fmt2_skip_endmarkers( p, unitSize, valid ); - p += valid->subtable_length; - - valid->subtable_length = p - table; - GXV_EXIT; - } - - - /* ================= Segment Table Format 6 Lookup Table =============== */ - static void - gxv_LookupTable_fmt6_skip_endmarkers( FT_Bytes table, - FT_UShort unitSize, - GXV_Validator valid ) - { - FT_Bytes p = table; - - - while ( p < valid->root->limit ) - { - if ( p[0] != 0xFF || p[1] != 0xFF ) - break; - p += unitSize; - } - - valid->subtable_length = p - table; - } - - - static void - gxv_LookupTable_fmt6_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UShort unit; - FT_UShort prev_glyph; - - FT_UShort unitSize; - FT_UShort nUnits; - FT_UShort glyph; - GXV_LookupValueDesc value; - - - GXV_NAME_ENTER( "LookupTable format 6" ); - - unitSize = nUnits = 0; - gxv_BinSrchHeader_validate( p, limit, &unitSize, &nUnits, valid ); - p += valid->subtable_length; - - GXV_UNITSIZE_VALIDATE( "format6", unitSize, nUnits, 4 ); - - for ( unit = 0, prev_glyph = 0; unit < nUnits; unit++ ) - { - GXV_LIMIT_CHECK( 2 + 2 ); - glyph = FT_NEXT_USHORT( p ); - value = GXV_LOOKUP_VALUE_LOAD( p, valid->lookupval_sign ); - - if ( gxv_glyphid_validate( glyph, valid ) ) - GXV_TRACE(( " endmarker found within defined range" - " (entry %d < nUnits=%d)\n", - unit, nUnits )); - - if ( prev_glyph > glyph ) - { - GXV_TRACE(( "current gid 0x%04x < previous gid 0x%04x\n", - glyph, prev_glyph )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_GLYPH_ID; - } - prev_glyph = glyph; - - valid->lookupval_func( glyph, value, valid ); - } - - gxv_LookupTable_fmt6_skip_endmarkers( p, unitSize, valid ); - p += valid->subtable_length; - - valid->subtable_length = p - table; - GXV_EXIT; - } - - - /* ================= Trimmed Array Format 8 Lookup Table =============== */ - static void - gxv_LookupTable_fmt8_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UShort i; - - GXV_LookupValueDesc value; - FT_UShort firstGlyph; - FT_UShort glyphCount; - - - GXV_NAME_ENTER( "LookupTable format 8" ); - - /* firstGlyph + glyphCount */ - GXV_LIMIT_CHECK( 2 + 2 ); - firstGlyph = FT_NEXT_USHORT( p ); - glyphCount = FT_NEXT_USHORT( p ); - - gxv_glyphid_validate( firstGlyph, valid ); - gxv_glyphid_validate( (FT_UShort)( firstGlyph + glyphCount ), valid ); - - /* valueArray */ - for ( i = 0; i < glyphCount; i++ ) - { - GXV_LIMIT_CHECK( 2 ); - value = GXV_LOOKUP_VALUE_LOAD( p, valid->lookupval_sign ); - valid->lookupval_func( (FT_UShort)( firstGlyph + i ), value, valid ); - } - - valid->subtable_length = p - table; - GXV_EXIT; - } - - - FT_LOCAL_DEF( void ) - gxv_LookupTable_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UShort format; - - GXV_Validate_Func fmt_funcs_table[] = - { - gxv_LookupTable_fmt0_validate, /* 0 */ - NULL, /* 1 */ - gxv_LookupTable_fmt2_validate, /* 2 */ - NULL, /* 3 */ - gxv_LookupTable_fmt4_validate, /* 4 */ - NULL, /* 5 */ - gxv_LookupTable_fmt6_validate, /* 6 */ - NULL, /* 7 */ - gxv_LookupTable_fmt8_validate, /* 8 */ - }; - - GXV_Validate_Func func; - - - GXV_NAME_ENTER( "LookupTable" ); - - /* lookuptbl_head may be used in fmt4 transit function. */ - valid->lookuptbl_head = table; - - /* format */ - GXV_LIMIT_CHECK( 2 ); - format = FT_NEXT_USHORT( p ); - GXV_TRACE(( " (format %d)\n", format )); - - if ( format > 8 ) - FT_INVALID_FORMAT; - - func = fmt_funcs_table[format]; - if ( func == NULL ) - FT_INVALID_FORMAT; - - func( p, limit, valid ); - p += valid->subtable_length; - - valid->subtable_length = p - table; - - GXV_EXIT; - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** Glyph ID *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - FT_LOCAL_DEF( FT_Int ) - gxv_glyphid_validate( FT_UShort gid, - GXV_Validator valid ) - { - FT_Face face; - - - if ( gid == 0xFFFFU ) - { - GXV_EXIT; - return 1; - } - - face = valid->face; - if ( face->num_glyphs < gid ) - { - GXV_TRACE(( " gxv_glyphid_check() gid overflow: num_glyphs %d < %d\n", - face->num_glyphs, gid )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_GLYPH_ID; - } - - return 0; - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** CONTROL POINT *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - FT_LOCAL_DEF( void ) - gxv_ctlPoint_validate( FT_UShort gid, - FT_Short ctl_point, - GXV_Validator valid ) - { - FT_Face face; - FT_Error error; - - FT_GlyphSlot glyph; - FT_Outline outline; - short n_points; - - - face = valid->face; - - error = FT_Load_Glyph( face, - gid, - FT_LOAD_NO_BITMAP | FT_LOAD_IGNORE_TRANSFORM ); - if ( error ) - FT_INVALID_GLYPH_ID; - - glyph = face->glyph; - outline = glyph->outline; - n_points = outline.n_points; - - - if ( !( ctl_point < n_points ) ) - FT_INVALID_DATA; - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** SFNT NAME *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - FT_LOCAL_DEF( void ) - gxv_sfntName_validate( FT_UShort name_index, - FT_UShort min_index, - FT_UShort max_index, - GXV_Validator valid ) - { - FT_SfntName name; - FT_UInt i; - FT_UInt nnames; - - - GXV_NAME_ENTER( "sfntName" ); - - if ( name_index < min_index || max_index < name_index ) - FT_INVALID_FORMAT; - - nnames = FT_Get_Sfnt_Name_Count( valid->face ); - for ( i = 0; i < nnames; i++ ) - { - if ( FT_Get_Sfnt_Name( valid->face, i, &name ) != FT_Err_Ok ) - continue ; - - if ( name.name_id == name_index ) - goto Out; - } - - GXV_TRACE(( " nameIndex = %d (UNTITLED)\n", name_index )); - FT_INVALID_DATA; - goto Exit; /* make compiler happy */ - - Out: - FT_TRACE1(( " nameIndex = %d (", name_index )); - GXV_TRACE_HEXDUMP_SFNTNAME( name ); - FT_TRACE1(( ")\n" )); - - Exit: - GXV_EXIT; - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** STATE TABLE *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - /* -------------------------- Class Table --------------------------- */ - - /* - * highestClass specifies how many classes are defined in this - * Class Subtable. Apple spec does not mention whether undefined - * holes in the class (e.g.: 0-3 are predefined, 4 is unused, 5 is used) - * are permitted. At present, holes in a defined class are not checked. - * -- suzuki toshiya <mpsuzuki@hiroshima-u.ac.jp> - */ - - static void - gxv_ClassTable_validate( FT_Bytes table, - FT_UShort* length_p, - FT_UShort stateSize, - FT_Byte* maxClassID_p, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_Bytes limit = table + *length_p; - FT_UShort firstGlyph; - FT_UShort nGlyphs; - - - GXV_NAME_ENTER( "ClassTable" ); - - *maxClassID_p = 3; /* Classes 0, 2, and 3 are predefined */ - - GXV_LIMIT_CHECK( 2 + 2 ); - firstGlyph = FT_NEXT_USHORT( p ); - nGlyphs = FT_NEXT_USHORT( p ); - - GXV_TRACE(( " (firstGlyph = %d, nGlyphs = %d)\n", firstGlyph, nGlyphs )); - - if ( !nGlyphs ) - goto Out; - - gxv_glyphid_validate( (FT_UShort)( firstGlyph + nGlyphs ), valid ); - - { - FT_Byte nGlyphInClass[256]; - FT_Byte classID; - FT_UShort i; - - - ft_memset( nGlyphInClass, 0, 256 ); - - - for ( i = 0; i < nGlyphs; i++ ) - { - GXV_LIMIT_CHECK( 1 ); - classID = FT_NEXT_BYTE( p ); - switch ( classID ) - { - /* following classes should not appear in class array */ - case 0: /* end of text */ - case 2: /* out of bounds */ - case 3: /* end of line */ - FT_INVALID_DATA; - break; - - case 1: /* out of bounds */ - default: /* user-defined: 4 - ( stateSize - 1 ) */ - if ( classID >= stateSize ) - FT_INVALID_DATA; /* assign glyph to undefined state */ - - nGlyphInClass[classID]++; - break; - } - } - *length_p = (FT_UShort)( p - table ); - - /* scan max ClassID in use */ - for ( i = 0; i < stateSize; i++ ) - if ( ( 3 < i ) && ( nGlyphInClass[i] > 0 ) ) - *maxClassID_p = (FT_Byte)i; /* XXX: Check Range? */ - } - - Out: - GXV_TRACE(( "Declared stateSize=0x%02x, Used maxClassID=0x%02x\n", - stateSize, *maxClassID_p )); - GXV_EXIT; - } - - - /* --------------------------- State Array ----------------------------- */ - - static void - gxv_StateArray_validate( FT_Bytes table, - FT_UShort* length_p, - FT_Byte maxClassID, - FT_UShort stateSize, - FT_Byte* maxState_p, - FT_Byte* maxEntry_p, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_Bytes limit = table + *length_p; - FT_Byte clazz; - FT_Byte entry; - - FT_UNUSED( stateSize ); /* for the non-debugging case */ - - - GXV_NAME_ENTER( "StateArray" ); - - GXV_TRACE(( "parse %d bytes by stateSize=%d maxClassID=%d\n", - (int)(*length_p), stateSize, (int)(maxClassID) )); - - /* - * 2 states are predefined and must be described in StateArray: - * state 0 (start of text), 1 (start of line) - */ - GXV_LIMIT_CHECK( ( 1 + maxClassID ) * 2 ); - - *maxState_p = 0; - *maxEntry_p = 0; - - /* read if enough to read another state */ - while ( p + ( 1 + maxClassID ) <= limit ) - { - (*maxState_p)++; - for ( clazz = 0; clazz <= maxClassID; clazz++ ) - { - entry = FT_NEXT_BYTE( p ); - *maxEntry_p = (FT_Byte)FT_MAX( *maxEntry_p, entry ); - } - } - GXV_TRACE(( "parsed: maxState=%d, maxEntry=%d\n", - *maxState_p, *maxEntry_p )); - - *length_p = (FT_UShort)( p - table ); - - GXV_EXIT; - } - - - /* --------------------------- Entry Table ----------------------------- */ - - static void - gxv_EntryTable_validate( FT_Bytes table, - FT_UShort* length_p, - FT_Byte maxEntry, - FT_UShort stateArray, - FT_UShort stateArray_length, - FT_Byte maxClassID, - FT_Bytes statetable_table, - FT_Bytes statetable_limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_Bytes limit = table + *length_p; - FT_Byte entry; - FT_Byte state; - FT_Int entrySize = 2 + 2 + GXV_GLYPHOFFSET_SIZE( statetable ); - - GXV_XStateTable_GlyphOffsetDesc glyphOffset; - - - GXV_NAME_ENTER( "EntryTable" ); - - GXV_TRACE(( "maxEntry=%d entrySize=%d\n", maxEntry, entrySize )); - - if ( ( maxEntry + 1 ) * entrySize > *length_p ) - { - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_TOO_SHORT; - - /* ftxvalidator and FontValidator both warn and continue */ - maxEntry = (FT_Byte)( *length_p / entrySize - 1 ); - GXV_TRACE(( "too large maxEntry, shrinking to %d fit EntryTable length\n", - maxEntry )); - } - - for ( entry = 0; entry <= maxEntry; entry++ ) - { - FT_UShort newState; - FT_UShort flags; - - - GXV_LIMIT_CHECK( 2 + 2 ); - newState = FT_NEXT_USHORT( p ); - flags = FT_NEXT_USHORT( p ); - - - if ( newState < stateArray || - stateArray + stateArray_length < newState ) - { - GXV_TRACE(( " newState offset 0x%04x is out of stateArray\n", - newState )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_OFFSET; - continue; - } - - if ( 0 != ( ( newState - stateArray ) % ( 1 + maxClassID ) ) ) - { - GXV_TRACE(( " newState offset 0x%04x is not aligned to %d-classes\n", - newState, 1 + maxClassID )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_OFFSET; - continue; - } - - state = (FT_Byte)( ( newState - stateArray ) / ( 1 + maxClassID ) ); - - switch ( GXV_GLYPHOFFSET_FMT( statetable ) ) - { - case GXV_GLYPHOFFSET_NONE: - glyphOffset.uc = 0; /* make compiler happy */ - break; - - case GXV_GLYPHOFFSET_UCHAR: - glyphOffset.uc = FT_NEXT_BYTE( p ); - break; - - case GXV_GLYPHOFFSET_CHAR: - glyphOffset.c = FT_NEXT_CHAR( p ); - break; - - case GXV_GLYPHOFFSET_USHORT: - glyphOffset.u = FT_NEXT_USHORT( p ); - break; - - case GXV_GLYPHOFFSET_SHORT: - glyphOffset.s = FT_NEXT_SHORT( p ); - break; - - case GXV_GLYPHOFFSET_ULONG: - glyphOffset.ul = FT_NEXT_ULONG( p ); - break; - - case GXV_GLYPHOFFSET_LONG: - glyphOffset.l = FT_NEXT_LONG( p ); - break; - - default: - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_FORMAT; - goto Exit; - } - - if ( NULL != valid->statetable.entry_validate_func ) - valid->statetable.entry_validate_func( state, - flags, - glyphOffset, - statetable_table, - statetable_limit, - valid ); - } - - Exit: - *length_p = (FT_UShort)( p - table ); - - GXV_EXIT; - } - - - /* =========================== State Table ============================= */ - - FT_LOCAL_DEF( void ) - gxv_StateTable_subtable_setup( FT_UShort table_size, - FT_UShort classTable, - FT_UShort stateArray, - FT_UShort entryTable, - FT_UShort* classTable_length_p, - FT_UShort* stateArray_length_p, - FT_UShort* entryTable_length_p, - GXV_Validator valid ) - { - FT_UShort o[3]; - FT_UShort* l[3]; - FT_UShort buff[4]; - - - o[0] = classTable; - o[1] = stateArray; - o[2] = entryTable; - l[0] = classTable_length_p; - l[1] = stateArray_length_p; - l[2] = entryTable_length_p; - - gxv_set_length_by_ushort_offset( o, l, buff, 3, table_size, valid ); - } - - - FT_LOCAL_DEF( void ) - gxv_StateTable_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_UShort stateSize; - FT_UShort classTable; /* offset to Class(Sub)Table */ - FT_UShort stateArray; /* offset to StateArray */ - FT_UShort entryTable; /* offset to EntryTable */ - - FT_UShort classTable_length; - FT_UShort stateArray_length; - FT_UShort entryTable_length; - FT_Byte maxClassID; - FT_Byte maxState; - FT_Byte maxEntry; - - GXV_StateTable_Subtable_Setup_Func setup_func; - - FT_Bytes p = table; - - - GXV_NAME_ENTER( "StateTable" ); - - GXV_TRACE(( "StateTable header\n" )); - - GXV_LIMIT_CHECK( 2 + 2 + 2 + 2 ); - stateSize = FT_NEXT_USHORT( p ); - classTable = FT_NEXT_USHORT( p ); - stateArray = FT_NEXT_USHORT( p ); - entryTable = FT_NEXT_USHORT( p ); - - GXV_TRACE(( "stateSize=0x%04x\n", stateSize )); - GXV_TRACE(( "offset to classTable=0x%04x\n", classTable )); - GXV_TRACE(( "offset to stateArray=0x%04x\n", stateArray )); - GXV_TRACE(( "offset to entryTable=0x%04x\n", entryTable )); - - if ( stateSize > 0xFF ) - FT_INVALID_DATA; - - if ( valid->statetable.optdata_load_func != NULL ) - valid->statetable.optdata_load_func( p, limit, valid ); - - if ( valid->statetable.subtable_setup_func != NULL) - setup_func = valid->statetable.subtable_setup_func; - else - setup_func = gxv_StateTable_subtable_setup; - - setup_func( (FT_UShort)( limit - table ), - classTable, - stateArray, - entryTable, - &classTable_length, - &stateArray_length, - &entryTable_length, - valid ); - - GXV_TRACE(( "StateTable Subtables\n" )); - - if ( classTable != 0 ) - gxv_ClassTable_validate( table + classTable, - &classTable_length, - stateSize, - &maxClassID, - valid ); - else - maxClassID = (FT_Byte)( stateSize - 1 ); - - if ( stateArray != 0 ) - gxv_StateArray_validate( table + stateArray, - &stateArray_length, - maxClassID, - stateSize, - &maxState, - &maxEntry, - valid ); - else - { - maxState = 1; /* 0:start of text, 1:start of line are predefined */ - maxEntry = 0; - } - - if ( maxEntry > 0 && entryTable == 0 ) - FT_INVALID_OFFSET; - - if ( entryTable != 0 ) - gxv_EntryTable_validate( table + entryTable, - &entryTable_length, - maxEntry, - stateArray, - stateArray_length, - maxClassID, - table, - limit, - valid ); - - GXV_EXIT; - } - - - /* ================= eXtended State Table (for morx) =================== */ - - FT_LOCAL_DEF( void ) - gxv_XStateTable_subtable_setup( FT_ULong table_size, - FT_ULong classTable, - FT_ULong stateArray, - FT_ULong entryTable, - FT_ULong* classTable_length_p, - FT_ULong* stateArray_length_p, - FT_ULong* entryTable_length_p, - GXV_Validator valid ) - { - FT_ULong o[3]; - FT_ULong* l[3]; - FT_ULong buff[4]; - - - o[0] = classTable; - o[1] = stateArray; - o[2] = entryTable; - l[0] = classTable_length_p; - l[1] = stateArray_length_p; - l[2] = entryTable_length_p; - - gxv_set_length_by_ulong_offset( o, l, buff, 4, table_size, valid ); - } - - - static void - gxv_XClassTable_lookupval_validate( FT_UShort glyph, - GXV_LookupValueDesc value, - GXV_Validator valid ) - { - FT_UNUSED( glyph ); - - if ( value.u >= valid->xstatetable.nClasses ) - FT_INVALID_DATA; - if ( value.u > valid->xstatetable.maxClassID ) - valid->xstatetable.maxClassID = value.u; - } - - - /* - +===============+ --------+ - | lookup header | | - +===============+ | - | BinSrchHeader | | - +===============+ | - | lastGlyph[0] | | - +---------------+ | - | firstGlyph[0] | | head of lookup table - +---------------+ | + - | offset[0] | -> | offset [byte] - +===============+ | + - | lastGlyph[1] | | (glyphID - firstGlyph) * 2 [byte] - +---------------+ | - | firstGlyph[1] | | - +---------------+ | - | offset[1] | | - +===============+ | - | - .... | - | - 16bit value array | - +===============+ | - | value | <-------+ - .... - */ - static GXV_LookupValueDesc - gxv_XClassTable_lookupfmt4_transit( FT_UShort relative_gindex, - GXV_LookupValueDesc base_value, - FT_Bytes lookuptbl_limit, - GXV_Validator valid ) - { - FT_Bytes p; - FT_Bytes limit; - FT_UShort offset; - GXV_LookupValueDesc value; - - /* XXX: check range? */ - offset = (FT_UShort)( base_value.u + - relative_gindex * sizeof ( FT_UShort ) ); - - p = valid->lookuptbl_head + offset; - limit = lookuptbl_limit; - - GXV_LIMIT_CHECK ( 2 ); - value.u = FT_NEXT_USHORT( p ); - - return value; - } - - - static void - gxv_XStateArray_validate( FT_Bytes table, - FT_ULong* length_p, - FT_UShort maxClassID, - FT_ULong stateSize, - FT_UShort* maxState_p, - FT_UShort* maxEntry_p, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_Bytes limit = table + *length_p; - FT_UShort clazz; - FT_UShort entry; - - FT_UNUSED( stateSize ); /* for the non-debugging case */ - - - GXV_NAME_ENTER( "XStateArray" ); - - GXV_TRACE(( "parse % 3d bytes by stateSize=% 3d maxClassID=% 3d\n", - (int)(*length_p), stateSize, (int)(maxClassID) )); - - /* - * 2 states are predefined and must be described: - * state 0 (start of text), 1 (start of line) - */ - GXV_LIMIT_CHECK( ( 1 + maxClassID ) * 2 * 2 ); - - *maxState_p = 0; - *maxEntry_p = 0; - - /* read if enough to read another state */ - while ( p + ( ( 1 + maxClassID ) * 2 ) <= limit ) - { - (*maxState_p)++; - for ( clazz = 0; clazz <= maxClassID; clazz++ ) - { - entry = FT_NEXT_USHORT( p ); - *maxEntry_p = (FT_UShort)FT_MAX( *maxEntry_p, entry ); - } - } - GXV_TRACE(( "parsed: maxState=%d, maxEntry=%d\n", - *maxState_p, *maxEntry_p )); - - *length_p = p - table; - - GXV_EXIT; - } - - - static void - gxv_XEntryTable_validate( FT_Bytes table, - FT_ULong* length_p, - FT_UShort maxEntry, - FT_ULong stateArray_length, - FT_UShort maxClassID, - FT_Bytes xstatetable_table, - FT_Bytes xstatetable_limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_Bytes limit = table + *length_p; - FT_UShort entry; - FT_UShort state; - FT_Int entrySize = 2 + 2 + GXV_GLYPHOFFSET_SIZE( xstatetable ); - - - GXV_NAME_ENTER( "XEntryTable" ); - GXV_TRACE(( "maxEntry=%d entrySize=%d\n", maxEntry, entrySize )); - - if ( ( p + ( maxEntry + 1 ) * entrySize ) > limit ) - FT_INVALID_TOO_SHORT; - - for (entry = 0; entry <= maxEntry ; entry++ ) - { - FT_UShort newState_idx; - FT_UShort flags; - GXV_XStateTable_GlyphOffsetDesc glyphOffset; - - - GXV_LIMIT_CHECK( 2 + 2 ); - newState_idx = FT_NEXT_USHORT( p ); - flags = FT_NEXT_USHORT( p ); - - if ( stateArray_length < (FT_ULong)( newState_idx * 2 ) ) - { - GXV_TRACE(( " newState index 0x%04x points out of stateArray\n", - newState_idx )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_OFFSET; - } - - state = (FT_UShort)( newState_idx / ( 1 + maxClassID ) ); - if ( 0 != ( newState_idx % ( 1 + maxClassID ) ) ) - { - FT_TRACE4(( "-> new state = %d (supposed)\n" - "but newState index 0x%04x is not aligned to %d-classes\n", - state, newState_idx, 1 + maxClassID )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_OFFSET; - } - - switch ( GXV_GLYPHOFFSET_FMT( xstatetable ) ) - { - case GXV_GLYPHOFFSET_NONE: - glyphOffset.uc = 0; /* make compiler happy */ - break; - - case GXV_GLYPHOFFSET_UCHAR: - glyphOffset.uc = FT_NEXT_BYTE( p ); - break; - - case GXV_GLYPHOFFSET_CHAR: - glyphOffset.c = FT_NEXT_CHAR( p ); - break; - - case GXV_GLYPHOFFSET_USHORT: - glyphOffset.u = FT_NEXT_USHORT( p ); - break; - - case GXV_GLYPHOFFSET_SHORT: - glyphOffset.s = FT_NEXT_SHORT( p ); - break; - - case GXV_GLYPHOFFSET_ULONG: - glyphOffset.ul = FT_NEXT_ULONG( p ); - break; - - case GXV_GLYPHOFFSET_LONG: - glyphOffset.l = FT_NEXT_LONG( p ); - break; - - default: - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_FORMAT; - goto Exit; - } - - if ( NULL != valid->xstatetable.entry_validate_func ) - valid->xstatetable.entry_validate_func( state, - flags, - glyphOffset, - xstatetable_table, - xstatetable_limit, - valid ); - } - - Exit: - *length_p = p - table; - - GXV_EXIT; - } - - - FT_LOCAL_DEF( void ) - gxv_XStateTable_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - /* StateHeader members */ - FT_ULong classTable; /* offset to Class(Sub)Table */ - FT_ULong stateArray; /* offset to StateArray */ - FT_ULong entryTable; /* offset to EntryTable */ - - FT_ULong classTable_length; - FT_ULong stateArray_length; - FT_ULong entryTable_length; - FT_UShort maxState; - FT_UShort maxEntry; - - GXV_XStateTable_Subtable_Setup_Func setup_func; - - FT_Bytes p = table; - - - GXV_NAME_ENTER( "XStateTable" ); - - GXV_TRACE(( "XStateTable header\n" )); - - GXV_LIMIT_CHECK( 4 + 4 + 4 + 4 ); - valid->xstatetable.nClasses = FT_NEXT_ULONG( p ); - classTable = FT_NEXT_ULONG( p ); - stateArray = FT_NEXT_ULONG( p ); - entryTable = FT_NEXT_ULONG( p ); - - GXV_TRACE(( "nClasses =0x%08x\n", valid->xstatetable.nClasses )); - GXV_TRACE(( "offset to classTable=0x%08x\n", classTable )); - GXV_TRACE(( "offset to stateArray=0x%08x\n", stateArray )); - GXV_TRACE(( "offset to entryTable=0x%08x\n", entryTable )); - - if ( valid->xstatetable.nClasses > 0xFFFFU ) - FT_INVALID_DATA; - - GXV_TRACE(( "StateTable Subtables\n" )); - - if ( valid->xstatetable.optdata_load_func != NULL ) - valid->xstatetable.optdata_load_func( p, limit, valid ); - - if ( valid->xstatetable.subtable_setup_func != NULL ) - setup_func = valid->xstatetable.subtable_setup_func; - else - setup_func = gxv_XStateTable_subtable_setup; - - setup_func( limit - table, - classTable, - stateArray, - entryTable, - &classTable_length, - &stateArray_length, - &entryTable_length, - valid ); - - if ( classTable != 0 ) - { - valid->xstatetable.maxClassID = 0; - valid->lookupval_sign = GXV_LOOKUPVALUE_UNSIGNED; - valid->lookupval_func = gxv_XClassTable_lookupval_validate; - valid->lookupfmt4_trans = gxv_XClassTable_lookupfmt4_transit; - gxv_LookupTable_validate( table + classTable, - table + classTable + classTable_length, - valid ); - if ( valid->subtable_length < classTable_length ) - classTable_length = valid->subtable_length; - } - else - { - /* XXX: check range? */ - valid->xstatetable.maxClassID = - (FT_UShort)( valid->xstatetable.nClasses - 1 ); - } - - if ( stateArray != 0 ) - gxv_XStateArray_validate( table + stateArray, - &stateArray_length, - valid->xstatetable.maxClassID, - valid->xstatetable.nClasses, - &maxState, - &maxEntry, - valid ); - else - { - maxState = 1; /* 0:start of text, 1:start of line are predefined */ - maxEntry = 0; - } - - if ( maxEntry > 0 && entryTable == 0 ) - FT_INVALID_OFFSET; - - if ( entryTable != 0 ) - gxv_XEntryTable_validate( table + entryTable, - &entryTable_length, - maxEntry, - stateArray_length, - valid->xstatetable.maxClassID, - table, - limit, - valid ); - - GXV_EXIT; - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** Table overlapping *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - static int - gxv_compare_ranges( FT_Bytes table1_start, - FT_ULong table1_length, - FT_Bytes table2_start, - FT_ULong table2_length ) - { - if ( table1_start == table2_start ) - { - if ( ( table1_length == 0 || table2_length == 0 ) ) - goto Out; - } - else if ( table1_start < table2_start ) - { - if ( ( table1_start + table1_length ) <= table2_start ) - goto Out; - } - else if ( table1_start > table2_start ) - { - if ( ( table1_start >= table2_start + table2_length ) ) - goto Out; - } - return 1; - - Out: - return 0; - } - - - FT_LOCAL_DEF( void ) - gxv_odtect_add_range( FT_Bytes start, - FT_ULong length, - const FT_String* name, - GXV_odtect_Range odtect ) - { - odtect->range[ odtect->nRanges ].start = start; - odtect->range[ odtect->nRanges ].length = length; - odtect->range[ odtect->nRanges ].name = (FT_String*)name; - odtect->nRanges++; - } - - - FT_LOCAL_DEF( void ) - gxv_odtect_validate( GXV_odtect_Range odtect, - GXV_Validator valid ) - { - FT_UInt i, j; - - - GXV_NAME_ENTER( "check overlap among multi ranges" ); - - for ( i = 0; i < odtect->nRanges; i++ ) - for ( j = 0; j < i; j++ ) - if ( 0 != gxv_compare_ranges( odtect->range[i].start, - odtect->range[i].length, - odtect->range[j].start, - odtect->range[j].length ) ) - { - if ( odtect->range[i].name || odtect->range[j].name ) - GXV_TRACE(( "found overlap between range %d and range %d\n", - i, j )); - else - GXV_TRACE(( "found overlap between `%s' and `%s\'\n", - odtect->range[i].name, - odtect->range[j].name )); - FT_INVALID_OFFSET; - } - - GXV_EXIT; - } - - -/* END */ diff --git a/src/gxvalid/gxvcommn.h b/src/gxvalid/gxvcommn.h deleted file mode 100644 index 0128eca..0000000 --- a/src/gxvalid/gxvcommn.h +++ /dev/null @@ -1,560 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvcommn.h */ -/* */ -/* TrueTypeGX/AAT common tables validation (specification). */ -/* */ -/* Copyright 2004, 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - - /* - * keywords in variable naming - * --------------------------- - * table: Of type FT_Bytes, pointing to the start of this table/subtable. - * limit: Of type FT_Bytes, pointing to the end of this table/subtable, - * including padding for alignment. - * offset: Of type FT_UInt, the number of octets from the start to target. - * length: Of type FT_UInt, the number of octets from the start to the - * end in this table/subtable, including padding for alignment. - * - * _MIN, _MAX: Should be added to the tail of macros, as INT_MIN, etc. - */ - - -#ifndef __GXVCOMMN_H__ -#define __GXVCOMMN_H__ - - -#include <ft2build.h> -#include "gxvalid.h" -#include FT_INTERNAL_DEBUG_H -#include FT_SFNT_NAMES_H - - -FT_BEGIN_HEADER - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** VALIDATION *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - typedef struct GXV_ValidatorRec_* GXV_Validator; - - -#define DUMMY_LIMIT 0 - - typedef void - (*GXV_Validate_Func)( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ); - - - /* ====================== LookupTable Validator ======================== */ - - typedef union GXV_LookupValueDesc_ - { - FT_UShort u; - FT_Short s; - - } GXV_LookupValueDesc; - - typedef enum GXV_LookupValue_SignSpec_ - { - GXV_LOOKUPVALUE_UNSIGNED = 0, - GXV_LOOKUPVALUE_SIGNED - - } GXV_LookupValue_SignSpec; - - - typedef void - (*GXV_Lookup_Value_Validate_Func)( FT_UShort glyph, - GXV_LookupValueDesc value, - GXV_Validator valid ); - - typedef GXV_LookupValueDesc - (*GXV_Lookup_Fmt4_Transit_Func)( FT_UShort relative_gindex, - GXV_LookupValueDesc base_value, - FT_Bytes lookuptbl_limit, - GXV_Validator valid ); - - - /* ====================== StateTable Validator ========================= */ - - typedef enum GXV_GlyphOffset_Format_ - { - GXV_GLYPHOFFSET_NONE = -1, - GXV_GLYPHOFFSET_UCHAR = 2, - GXV_GLYPHOFFSET_CHAR, - GXV_GLYPHOFFSET_USHORT = 4, - GXV_GLYPHOFFSET_SHORT, - GXV_GLYPHOFFSET_ULONG = 8, - GXV_GLYPHOFFSET_LONG - - } GXV_GlyphOffset_Format; - - -#define GXV_GLYPHOFFSET_FMT( table ) \ - ( valid->table.entry_glyphoffset_fmt ) - -#define GXV_GLYPHOFFSET_SIZE( table ) \ - ( valid->table.entry_glyphoffset_fmt / 2 ) - - - /* ----------------------- 16bit StateTable ---------------------------- */ - - typedef union GXV_StateTable_GlyphOffsetDesc_ - { - FT_Byte uc; - FT_UShort u; /* same as GXV_LookupValueDesc */ - FT_ULong ul; - FT_Char c; - FT_Short s; /* same as GXV_LookupValueDesc */ - FT_Long l; - - } GXV_StateTable_GlyphOffsetDesc; - - - typedef void - (*GXV_StateTable_Subtable_Setup_Func)( FT_UShort table_size, - FT_UShort classTable, - FT_UShort stateArray, - FT_UShort entryTable, - FT_UShort* classTable_length_p, - FT_UShort* stateArray_length_p, - FT_UShort* entryTable_length_p, - GXV_Validator valid ); - - typedef void - (*GXV_StateTable_Entry_Validate_Func)( - FT_Byte state, - FT_UShort flags, - GXV_StateTable_GlyphOffsetDesc glyphOffset, - FT_Bytes statetable_table, - FT_Bytes statetable_limit, - GXV_Validator valid ); - - typedef void - (*GXV_StateTable_OptData_Load_Func)( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ); - - typedef struct GXV_StateTable_ValidatorRec_ - { - GXV_GlyphOffset_Format entry_glyphoffset_fmt; - void* optdata; - - GXV_StateTable_Subtable_Setup_Func subtable_setup_func; - GXV_StateTable_Entry_Validate_Func entry_validate_func; - GXV_StateTable_OptData_Load_Func optdata_load_func; - - } GXV_StateTable_ValidatorRec, *GXV_StateTable_ValidatorRecData; - - - /* ---------------------- 32bit XStateTable ---------------------------- */ - - typedef GXV_StateTable_GlyphOffsetDesc GXV_XStateTable_GlyphOffsetDesc; - - typedef void - (*GXV_XStateTable_Subtable_Setup_Func)( FT_ULong table_size, - FT_ULong classTable, - FT_ULong stateArray, - FT_ULong entryTable, - FT_ULong* classTable_length_p, - FT_ULong* stateArray_length_p, - FT_ULong* entryTable_length_p, - GXV_Validator valid ); - - typedef void - (*GXV_XStateTable_Entry_Validate_Func)( - FT_UShort state, - FT_UShort flags, - GXV_StateTable_GlyphOffsetDesc glyphOffset, - FT_Bytes xstatetable_table, - FT_Bytes xstatetable_limit, - GXV_Validator valid ); - - - typedef GXV_StateTable_OptData_Load_Func GXV_XStateTable_OptData_Load_Func; - - - typedef struct GXV_XStateTable_ValidatorRec_ - { - int entry_glyphoffset_fmt; - void* optdata; - - GXV_XStateTable_Subtable_Setup_Func subtable_setup_func; - GXV_XStateTable_Entry_Validate_Func entry_validate_func; - GXV_XStateTable_OptData_Load_Func optdata_load_func; - - FT_ULong nClasses; - FT_UShort maxClassID; - - } GXV_XStateTable_ValidatorRec, *GXV_XStateTable_ValidatorRecData; - - - /* ===================================================================== */ - - typedef struct GXV_ValidatorRec_ - { - FT_Validator root; - - FT_Face face; - void* table_data; - - FT_ULong subtable_length; - - GXV_LookupValue_SignSpec lookupval_sign; - GXV_Lookup_Value_Validate_Func lookupval_func; - GXV_Lookup_Fmt4_Transit_Func lookupfmt4_trans; - FT_Bytes lookuptbl_head; - - GXV_StateTable_ValidatorRec statetable; - GXV_XStateTable_ValidatorRec xstatetable; - -#ifdef FT_DEBUG_LEVEL_TRACE - FT_UInt debug_indent; - const FT_String* debug_function_name[3]; -#endif - - } GXV_ValidatorRec; - - -#define GXV_TABLE_DATA( tag, field ) \ - ( ( (GXV_ ## tag ## _Data)valid->table_data )->field ) - -#undef FT_INVALID_ -#define FT_INVALID_( _prefix, _error ) \ - ft_validator_error( valid->root, _prefix ## _error ) - -#define GXV_LIMIT_CHECK( _count ) \ - FT_BEGIN_STMNT \ - if ( p + _count > ( limit? limit : valid->root->limit ) ) \ - FT_INVALID_TOO_SHORT; \ - FT_END_STMNT - - -#ifdef FT_DEBUG_LEVEL_TRACE - -#define GXV_INIT valid->debug_indent = 0 - -#define GXV_NAME_ENTER( name ) \ - FT_BEGIN_STMNT \ - valid->debug_indent += 2; \ - FT_TRACE4(( "%*.s", valid->debug_indent, 0 )); \ - FT_TRACE4(( "%s table\n", name )); \ - FT_END_STMNT - -#define GXV_EXIT valid->debug_indent -= 2 - -#define GXV_TRACE( s ) \ - FT_BEGIN_STMNT \ - FT_TRACE4(( "%*.s", valid->debug_indent, 0 )); \ - FT_TRACE4( s ); \ - FT_END_STMNT - -#else /* !FT_DEBUG_LEVEL_TRACE */ - -#define GXV_INIT do ; while ( 0 ) -#define GXV_NAME_ENTER( name ) do ; while ( 0 ) -#define GXV_EXIT do ; while ( 0 ) - -#define GXV_TRACE( s ) do ; while ( 0 ) - -#endif /* !FT_DEBUG_LEVEL_TRACE */ - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** 32bit alignment checking *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - -#define GXV_32BIT_ALIGNMENT_VALIDATE( a ) \ - FT_BEGIN_STMNT \ - { \ - if ( 0 != ( (a) % 4 ) ) \ - FT_INVALID_OFFSET ; \ - } \ - FT_END_STMNT - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** Dumping Binary Data *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - -#define GXV_TRACE_HEXDUMP( p, len ) \ - FT_BEGIN_STMNT \ - { \ - FT_Bytes b; \ - \ - \ - for ( b = p; b < (FT_Bytes)p + len; b++ ) \ - FT_TRACE1(("\\x%02x", *b)) ; \ - } \ - FT_END_STMNT - -#define GXV_TRACE_HEXDUMP_C( p, len ) \ - FT_BEGIN_STMNT \ - { \ - FT_Bytes b; \ - \ - \ - for ( b = p; b < (FT_Bytes)p + len; b++ ) \ - if ( 0x40 < *b && *b < 0x7e ) \ - FT_TRACE1(("%c", *b)) ; \ - else \ - FT_TRACE1(("\\x%02x", *b)) ; \ - } \ - FT_END_STMNT - -#define GXV_TRACE_HEXDUMP_SFNTNAME( n ) \ - GXV_TRACE_HEXDUMP( n.string, n.string_len ) - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** LOOKUP TABLE *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - FT_LOCAL( void ) - gxv_BinSrchHeader_validate( FT_Bytes p, - FT_Bytes limit, - FT_UShort* unitSize_p, - FT_UShort* nUnits_p, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_LookupTable_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ); - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** Glyph ID *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - FT_LOCAL( FT_Int ) - gxv_glyphid_validate( FT_UShort gid, - GXV_Validator valid ); - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** CONTROL POINT *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - FT_LOCAL( void ) - gxv_ctlPoint_validate( FT_UShort gid, - FT_Short ctl_point, - GXV_Validator valid ); - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** SFNT NAME *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - FT_LOCAL( void ) - gxv_sfntName_validate( FT_UShort name_index, - FT_UShort min_index, - FT_UShort max_index, - GXV_Validator valid ); - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** STATE TABLE *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - FT_LOCAL( void ) - gxv_StateTable_subtable_setup( FT_UShort table_size, - FT_UShort classTable, - FT_UShort stateArray, - FT_UShort entryTable, - FT_UShort* classTable_length_p, - FT_UShort* stateArray_length_p, - FT_UShort* entryTable_length_p, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_XStateTable_subtable_setup( FT_ULong table_size, - FT_ULong classTable, - FT_ULong stateArray, - FT_ULong entryTable, - FT_ULong* classTable_length_p, - FT_ULong* stateArray_length_p, - FT_ULong* entryTable_length_p, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_StateTable_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_XStateTable_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ); - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** UTILITY MACROS AND FUNCTIONS *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - FT_LOCAL( void ) - gxv_array_getlimits_byte( FT_Bytes table, - FT_Bytes limit, - FT_Byte* min, - FT_Byte* max, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_array_getlimits_ushort( FT_Bytes table, - FT_Bytes limit, - FT_UShort* min, - FT_UShort* max, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_set_length_by_ushort_offset( FT_UShort* offset, - FT_UShort** length, - FT_UShort* buff, - FT_UInt nmemb, - FT_UShort limit, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_set_length_by_ulong_offset( FT_ULong* offset, - FT_ULong** length, - FT_ULong* buff, - FT_UInt nmemb, - FT_ULong limit, - GXV_Validator valid); - - -#define GXV_SUBTABLE_OFFSET_CHECK( _offset ) \ - FT_BEGIN_STMNT \ - if ( (_offset) > valid->subtable_length ) \ - FT_INVALID_OFFSET; \ - FT_END_STMNT - -#define GXV_SUBTABLE_LIMIT_CHECK( _count ) \ - FT_BEGIN_STMNT \ - if ( ( p + (_count) - valid->subtable_start ) > \ - valid->subtable_length ) \ - FT_INVALID_TOO_SHORT; \ - FT_END_STMNT - -#define GXV_USHORT_TO_SHORT( _us ) \ - ( ( 0x8000U < ( _us ) ) ? ( ( _us ) - 0x8000U ) : ( _us ) ) - -#define GXV_STATETABLE_HEADER_SIZE ( 2 + 2 + 2 + 2 ) -#define GXV_STATEHEADER_SIZE GXV_STATETABLE_HEADER_SIZE - -#define GXV_XSTATETABLE_HEADER_SIZE ( 4 + 4 + 4 + 4 ) -#define GXV_XSTATEHEADER_SIZE GXV_XSTATETABLE_HEADER_SIZE - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** Table overlapping *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - typedef struct GXV_odtect_DataRec_ - { - FT_Bytes start; - FT_ULong length; - FT_String* name; - - } GXV_odtect_DataRec, *GXV_odtect_Data; - - typedef struct GXV_odtect_RangeRec_ - { - FT_UInt nRanges; - GXV_odtect_Data range; - - } GXV_odtect_RangeRec, *GXV_odtect_Range; - - - FT_LOCAL( void ) - gxv_odtect_add_range( FT_Bytes start, - FT_ULong length, - const FT_String* name, - GXV_odtect_Range odtect ); - - FT_LOCAL( void ) - gxv_odtect_validate( GXV_odtect_Range odtect, - GXV_Validator valid ); - - -#define GXV_ODTECT( n, odtect ) \ - GXV_odtect_DataRec odtect ## _range[n]; \ - GXV_odtect_RangeRec odtect ## _rec = { 0, NULL }; \ - GXV_odtect_Range odtect = NULL - -#define GXV_ODTECT_INIT( odtect ) \ - FT_BEGIN_STMNT \ - odtect ## _rec.nRanges = 0; \ - odtect ## _rec.range = odtect ## _range; \ - odtect = & odtect ## _rec; \ - FT_END_STMNT - - - /* */ - -FT_END_HEADER - -#endif /* __GXVCOMMN_H__ */ - - -/* END */ diff --git a/src/gxvalid/gxverror.h b/src/gxvalid/gxverror.h deleted file mode 100644 index 0196199..0000000 --- a/src/gxvalid/gxverror.h +++ /dev/null @@ -1,51 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxverror.h */ -/* */ -/* TrueTypeGX/AAT validation module error codes (specification only). */ -/* */ -/* Copyright 2004, 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - - /*************************************************************************/ - /* */ - /* This file is used to define the OpenType validation module error */ - /* enumeration constants. */ - /* */ - /*************************************************************************/ - -#ifndef __GXVERROR_H__ -#define __GXVERROR_H__ - -#include FT_MODULE_ERRORS_H - -#undef __FTERRORS_H__ - -#define FT_ERR_PREFIX GXV_Err_ -#define FT_ERR_BASE FT_Mod_Err_GXV - -#define FT_KEEP_ERR_PREFIX - -#include FT_ERRORS_H - -#endif /* __GXVERROR_H__ */ - - -/* END */ diff --git a/src/gxvalid/gxvfeat.c b/src/gxvalid/gxvfeat.c deleted file mode 100644 index d7c6ad1..0000000 --- a/src/gxvalid/gxvfeat.c +++ /dev/null @@ -1,343 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvfeat.c */ -/* */ -/* TrueTypeGX/AAT feat table validation (body). */ -/* */ -/* Copyright 2004, 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvalid.h" -#include "gxvcommn.h" -#include "gxvfeat.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvfeat - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** Data and Types *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - typedef struct GXV_feat_DataRec_ - { - FT_UInt reserved_size; - FT_UShort feature; - FT_UShort setting; - - } GXV_feat_DataRec, *GXV_feat_Data; - - -#define GXV_FEAT_DATA( field ) GXV_TABLE_DATA( feat, field ) - - - typedef enum - { - GXV_FEAT_MASK_EXCLUSIVE_SETTINGS = 0x8000U, - GXV_FEAT_MASK_DYNAMIC_DEFAULT = 0x4000, - GXV_FEAT_MASK_UNUSED = 0x3F00, - GXV_FEAT_MASK_DEFAULT_SETTING = 0x00FF - - } GXV_FeatureFlagsMask; - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** UTILITY FUNCTIONS *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - static void - gxv_feat_registry_validate( FT_UShort feature, - FT_UShort nSettings, - FT_Bool exclusive, - GXV_Validator valid ) - { - GXV_NAME_ENTER( "feature in registry" ); - - GXV_TRACE(( " (feature = %u)\n", feature )); - - if ( feature >= gxv_feat_registry_length ) - { - GXV_TRACE(( "feature number %d is out of range %d\n", - feature, gxv_feat_registry_length )); - if ( valid->root->level == FT_VALIDATE_PARANOID ) - FT_INVALID_DATA; - goto Exit; - } - - if ( gxv_feat_registry[feature].existence == 0 ) - { - GXV_TRACE(( "feature number %d is in defined range but doesn't exist\n", - feature )); - if ( valid->root->level == FT_VALIDATE_PARANOID ) - FT_INVALID_DATA; - goto Exit; - } - - if ( gxv_feat_registry[feature].apple_reserved ) - { - /* Don't use here. Apple is reserved. */ - GXV_TRACE(( "feature number %d is reserved by Apple\n", feature )); - if ( valid->root->level >= FT_VALIDATE_TIGHT ) - FT_INVALID_DATA; - } - - if ( nSettings != gxv_feat_registry[feature].nSettings ) - { - GXV_TRACE(( "feature %d: nSettings %d != defined nSettings %d\n", - feature, nSettings, - gxv_feat_registry[feature].nSettings )); - if ( valid->root->level >= FT_VALIDATE_TIGHT ) - FT_INVALID_DATA; - } - - if ( exclusive != gxv_feat_registry[feature].exclusive ) - { - GXV_TRACE(( "exclusive flag %d differs from predefined value\n", - exclusive )); - if ( valid->root->level >= FT_VALIDATE_TIGHT ) - FT_INVALID_DATA; - } - - Exit: - GXV_EXIT; - } - - - static void - gxv_feat_name_index_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - FT_Short nameIndex; - - - GXV_NAME_ENTER( "nameIndex" ); - - GXV_LIMIT_CHECK( 2 ); - nameIndex = FT_NEXT_SHORT ( p ); - GXV_TRACE(( " (nameIndex = %d)\n", nameIndex )); - - gxv_sfntName_validate( (FT_UShort)nameIndex, - 255, - 32768U, - valid ); - - GXV_EXIT; - } - - - static void - gxv_feat_setting_validate( FT_Bytes table, - FT_Bytes limit, - FT_Bool exclusive, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UShort setting; - - - GXV_NAME_ENTER( "setting" ); - - GXV_LIMIT_CHECK( 2 ); - - setting = FT_NEXT_USHORT( p ); - - /* If we have exclusive setting, the setting should be odd. */ - if ( exclusive && ( setting % 2 ) == 0 ) - FT_INVALID_DATA; - - gxv_feat_name_index_validate( p, limit, valid ); - - GXV_FEAT_DATA( setting ) = setting; - - GXV_EXIT; - } - - - static void - gxv_feat_name_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UInt reserved_size = GXV_FEAT_DATA( reserved_size ); - - FT_UShort feature; - FT_UShort nSettings; - FT_UInt settingTable; - FT_UShort featureFlags; - - FT_Bool exclusive; - FT_Int last_setting; - FT_UInt i; - - - GXV_NAME_ENTER( "name" ); - - /* feature + nSettings + settingTable + featureFlags */ - GXV_LIMIT_CHECK( 2 + 2 + 4 + 2 ); - - feature = FT_NEXT_USHORT( p ); - GXV_FEAT_DATA( feature ) = feature; - - nSettings = FT_NEXT_USHORT( p ); - settingTable = FT_NEXT_ULONG ( p ); - featureFlags = FT_NEXT_USHORT( p ); - - if ( settingTable < reserved_size ) - FT_INVALID_OFFSET; - - if ( valid->root->level == FT_VALIDATE_PARANOID && - ( featureFlags & GXV_FEAT_MASK_UNUSED ) == 0 ) - FT_INVALID_DATA; - - exclusive = FT_BOOL( featureFlags & GXV_FEAT_MASK_EXCLUSIVE_SETTINGS ); - if ( exclusive ) - { - FT_Byte dynamic_default; - - - if ( featureFlags & GXV_FEAT_MASK_DYNAMIC_DEFAULT ) - dynamic_default = (FT_Byte)( featureFlags & - GXV_FEAT_MASK_DEFAULT_SETTING ); - else - dynamic_default = 0; - - /* If exclusive, check whether default setting is in the range. */ - if ( !( dynamic_default < nSettings ) ) - FT_INVALID_FORMAT; - } - - gxv_feat_registry_validate( feature, nSettings, exclusive, valid ); - - gxv_feat_name_index_validate( p, limit, valid ); - - p = valid->root->base + settingTable; - for ( last_setting = -1, i = 0; i < nSettings; i++ ) - { - gxv_feat_setting_validate( p, limit, exclusive, valid ); - - if ( valid->root->level == FT_VALIDATE_PARANOID && - (FT_Int)GXV_FEAT_DATA( setting ) <= last_setting ) - FT_INVALID_FORMAT; - - last_setting = (FT_Int)GXV_FEAT_DATA( setting ); - /* setting + nameIndex */ - p += ( 2 + 2 ); - } - - GXV_EXIT; - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** feat TABLE *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - FT_LOCAL_DEF( void ) - gxv_feat_validate( FT_Bytes table, - FT_Face face, - FT_Validator ftvalid ) - { - GXV_ValidatorRec validrec; - GXV_Validator valid = &validrec; - - GXV_feat_DataRec featrec; - GXV_feat_Data feat = &featrec; - - FT_Bytes p = table; - FT_Bytes limit = 0; - - FT_UInt featureNameCount; - - FT_UInt i; - FT_Int last_feature; - - - valid->root = ftvalid; - valid->table_data = feat; - valid->face = face; - - FT_TRACE3(( "validating `feat' table\n" )); - GXV_INIT; - - feat->reserved_size = 0; - - /* version + featureNameCount + none_0 + none_1 */ - GXV_LIMIT_CHECK( 4 + 2 + 2 + 4 ); - feat->reserved_size += 4 + 2 + 2 + 4; - - if ( FT_NEXT_ULONG( p ) != 0x00010000UL ) /* Version */ - FT_INVALID_FORMAT; - - featureNameCount = FT_NEXT_USHORT( p ); - GXV_TRACE(( " (featureNameCount = %d)\n", featureNameCount )); - - if ( valid->root->level != FT_VALIDATE_PARANOID ) - p += 6; /* skip (none) and (none) */ - else - { - if ( FT_NEXT_USHORT( p ) != 0 ) - FT_INVALID_DATA; - - if ( FT_NEXT_ULONG( p ) != 0 ) - FT_INVALID_DATA; - } - - feat->reserved_size += featureNameCount * ( 2 + 2 + 4 + 2 + 2 ); - - for ( last_feature = -1, i = 0; i < featureNameCount; i++ ) - { - gxv_feat_name_validate( p, limit, valid ); - - if ( valid->root->level == FT_VALIDATE_PARANOID && - (FT_Int)GXV_FEAT_DATA( feature ) <= last_feature ) - FT_INVALID_FORMAT; - - last_feature = GXV_FEAT_DATA( feature ); - p += 2 + 2 + 4 + 2 + 2; - } - - FT_TRACE4(( "\n" )); - } - - -/* END */ diff --git a/src/gxvalid/gxvfeat.h b/src/gxvalid/gxvfeat.h deleted file mode 100644 index 049d23a..0000000 --- a/src/gxvalid/gxvfeat.h +++ /dev/null @@ -1,172 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvfeat.h */ -/* */ -/* TrueTypeGX/AAT feat table validation (specification). */ -/* */ -/* Copyright 2004, 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#ifndef __GXVFEAT_H__ -#define __GXVFEAT_H__ - - -#include "gxvalid.h" -#include "gxvcommn.h" - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** Registry predefined by Apple *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - /* TODO: More compact format */ - typedef struct GXV_Feature_RegistryRec_ - { - FT_Bool existence; - FT_Bool apple_reserved; - FT_Bool exclusive; - FT_Byte nSettings; - - } GX_Feature_RegistryRec; - - -#define gxv_feat_registry_length \ - ( sizeof ( gxv_feat_registry ) / \ - sizeof ( GX_Feature_RegistryRec ) ) - - - static GX_Feature_RegistryRec gxv_feat_registry[] = - { - /* Generated from gxvfgen.c */ - {1, 0, 0, 1}, /* All Typographic Features */ - {1, 0, 0, 8}, /* Ligatures */ - {1, 0, 1, 3}, /* Cursive Connection */ - {1, 0, 1, 6}, /* Letter Case */ - {1, 0, 0, 1}, /* Vertical Substitution */ - {1, 0, 0, 1}, /* Linguistic Rearrangement */ - {1, 0, 1, 2}, /* Number Spacing */ - {1, 1, 0, 0}, /* Apple Reserved 1 */ - {1, 0, 0, 5}, /* Smart Swashes */ - {1, 0, 1, 3}, /* Diacritics */ - {1, 0, 1, 4}, /* Vertical Position */ - {1, 0, 1, 3}, /* Fractions */ - {1, 1, 0, 0}, /* Apple Reserved 2 */ - {1, 0, 0, 1}, /* Overlapping Characters */ - {1, 0, 0, 6}, /* Typographic Extras */ - {1, 0, 0, 5}, /* Mathematical Extras */ - {1, 0, 1, 7}, /* Ornament Sets */ - {1, 0, 1, 1}, /* Character Alternatives */ - {1, 0, 1, 5}, /* Design Complexity */ - {1, 0, 1, 6}, /* Style Options */ - {1, 0, 1, 11}, /* Character Shape */ - {1, 0, 1, 2}, /* Number Case */ - {1, 0, 1, 4}, /* Text Spacing */ - {1, 0, 1, 10}, /* Transliteration */ - {1, 0, 1, 9}, /* Annotation */ - {1, 0, 1, 2}, /* Kana Spacing */ - {1, 0, 1, 2}, /* Ideographic Spacing */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {0, 0, 0, 0}, /* __EMPTY__ */ - {1, 0, 1, 4}, /* Text Spacing */ - {1, 0, 1, 2}, /* Kana Spacing */ - {1, 0, 1, 2}, /* Ideographic Spacing */ - {1, 0, 1, 4}, /* CJK Roman Spacing */ - }; - - -#endif /* __GXVFEAT_H__ */ - - -/* END */ diff --git a/src/gxvalid/gxvfgen.c b/src/gxvalid/gxvfgen.c deleted file mode 100644 index e48778a..0000000 --- a/src/gxvalid/gxvfgen.c +++ /dev/null @@ -1,482 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxfgen.c */ -/* */ -/* Generate feature registry data for gxv `feat' validator. */ -/* This program is derived from gxfeatreg.c in gxlayout. */ -/* */ -/* Copyright 2004, 2005, 2006 by Masatake YAMATO and Redhat K.K. */ -/* */ -/* This file may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxfeatreg.c */ -/* */ -/* Database of font features pre-defined by Apple Computer, Inc. */ -/* http://developer.apple.com/fonts/Registry/ */ -/* (body). */ -/* */ -/* Copyright 2003 by */ -/* Masatake YAMATO and Redhat K.K. */ -/* */ -/* This file may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* Development of gxfeatreg.c is supported by */ -/* Information-technology Promotion Agency, Japan. */ -/* */ -/***************************************************************************/ - - -/***************************************************************************/ -/* */ -/* This file is compiled as a stand-alone executable. */ -/* This file is never compiled into `libfreetype2'. */ -/* The output of this file is used in `gxvfeat.c'. */ -/* ----------------------------------------------------------------------- */ -/* Compile: gcc `pkg-config --cflags freetype2` gxvfgen.c -o gxvfgen */ -/* Run: ./gxvfgen > tmp.c */ -/* */ -/***************************************************************************/ - - /*******************************************************************/ - /* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING */ - /*******************************************************************/ - - /* - * If you add a new setting to a feature, check the number of settings - * in the feature. If the number is greater than the value defined as - * FEATREG_MAX_SETTING, update the value. - */ -#define FEATREG_MAX_SETTING 12 - - /*******************************************************************/ - /* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING */ - /*******************************************************************/ - - -#include <stdio.h> -#include <string.h> - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** Data and Types *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - -#define APPLE_RESERVED "Apple Reserved" -#define APPLE_RESERVED_LENGTH 14 - - typedef struct GX_Feature_RegistryRec_ - { - const char* feat_name; - char exclusive; - char* setting_name[FEATREG_MAX_SETTING]; - - } GX_Feature_RegistryRec; - - -#define EMPTYFEAT {0, 0, {NULL}} - - - static GX_Feature_RegistryRec featreg_table[] = { - { /* 0 */ - "All Typographic Features", - 0, - { - "All Type Features", - NULL - } - }, { /* 1 */ - "Ligatures", - 0, - { - "Required Ligatures", - "Common Ligatures", - "Rare Ligatures", - "Logos", - "Rebus Pictures", - "Diphthong Ligatures", - "Squared Ligatures", - "Squared Ligatures, Abbreviated", - NULL - } - }, { /* 2 */ - "Cursive Connection", - 1, - { - "Unconnected", - "Partially Connected", - "Cursive", - NULL - } - }, { /* 3 */ - "Letter Case", - 1, - { - "Upper & Lower Case", - "All Caps", - "All Lower Case", - "Small Caps", - "Initial Caps", - "Initial Caps & Small Caps", - NULL - } - }, { /* 4 */ - "Vertical Substitution", - 0, - { - /* "Substitute Vertical Forms", */ - "Turns on the feature", - NULL - } - }, { /* 5 */ - "Linguistic Rearrangement", - 0, - { - /* "Linguistic Rearrangement", */ - "Turns on the feature", - NULL - } - }, { /* 6 */ - "Number Spacing", - 1, - { - "Monospaced Numbers", - "Proportional Numbers", - NULL - } - }, { /* 7 */ - APPLE_RESERVED " 1", - 0, - {NULL} - }, { /* 8 */ - "Smart Swashes", - 0, - { - "Word Initial Swashes", - "Word Final Swashes", - "Line Initial Swashes", - "Line Final Swashes", - "Non-Final Swashes", - NULL - } - }, { /* 9 */ - "Diacritics", - 1, - { - "Show Diacritics", - "Hide Diacritics", - "Decompose Diacritics", - NULL - } - }, { /* 10 */ - "Vertical Position", - 1, - { - /* "Normal Position", */ - "No Vertical Position", - "Superiors", - "Inferiors", - "Ordinals", - NULL - } - }, { /* 11 */ - "Fractions", - 1, - { - "No Fractions", - "Vertical Fractions", - "Diagonal Fractions", - NULL - } - }, { /* 12 */ - APPLE_RESERVED " 2", - 0, - {NULL} - }, { /* 13 */ - "Overlapping Characters", - 0, - { - /* "Prevent Overlap", */ - "Turns on the feature", - NULL - } - }, { /* 14 */ - "Typographic Extras", - 0, - { - "Hyphens to Em Dash", - "Hyphens to En Dash", - "Unslashed Zero", - "Form Interrobang", - "Smart Quotes", - "Periods to Ellipsis", - NULL - } - }, { /* 15 */ - "Mathematical Extras", - 0, - { - "Hyphens to Minus", - "Asterisk to Multiply", - "Slash to Divide", - "Inequality Ligatures", - "Exponents", - NULL - } - }, { /* 16 */ - "Ornament Sets", - 1, - { - "No Ornaments", - "Dingbats", - "Pi Characters", - "Fleurons", - "Decorative Borders", - "International Symbols", - "Math Symbols", - NULL - } - }, { /* 17 */ - "Character Alternatives", - 1, - { - "No Alternates", - /* TODO */ - NULL - } - }, { /* 18 */ - "Design Complexity", - 1, - { - "Design Level 1", - "Design Level 2", - "Design Level 3", - "Design Level 4", - "Design Level 5", - /* TODO */ - NULL - } - }, { /* 19 */ - "Style Options", - 1, - { - "No Style Options", - "Display Text", - "Engraved Text", - "Illuminated Caps", - "Tilling Caps", - "Tall Caps", - NULL - } - }, { /* 20 */ - "Character Shape", - 1, - { - "Traditional Characters", - "Simplified Characters", - "JIS 1978 Characters", - "JIS 1983 Characters", - "JIS 1990 Characters", - "Traditional Characters, Alternative Set 1", - "Traditional Characters, Alternative Set 2", - "Traditional Characters, Alternative Set 3", - "Traditional Characters, Alternative Set 4", - "Traditional Characters, Alternative Set 5", - "Expert Characters", - NULL /* count => 12 */ - } - }, { /* 21 */ - "Number Case", - 1, - { - "Lower Case Numbers", - "Upper Case Numbers", - NULL - } - }, { /* 22 */ - "Text Spacing", - 1, - { - "Proportional", - "Monospaced", - "Half-width", - "Normal", - NULL - } - }, /* Here after Newer */ { /* 23 */ - "Transliteration", - 1, - { - "No Transliteration", - "Hanja To Hangul", - "Hiragana to Katakana", - "Katakana to Hiragana", - "Kana to Romanization", - "Romanization to Hiragana", - "Romanization to Katakana", - "Hanja to Hangul, Alternative Set 1", - "Hanja to Hangul, Alternative Set 2", - "Hanja to Hangul, Alternative Set 3", - NULL - } - }, { /* 24 */ - "Annotation", - 1, - { - "No Annotation", - "Box Annotation", - "Rounded Box Annotation", - "Circle Annotation", - "Inverted Circle Annotation", - "Parenthesis Annotation", - "Period Annotation", - "Roman Numeral Annotation", - "Diamond Annotation", - NULL - } - }, { /* 25 */ - "Kana Spacing", - 1, - { - "Full Width", - "Proportional", - NULL - } - }, { /* 26 */ - "Ideographic Spacing", - 1, - { - "Full Width", - "Proportional", - NULL - } - }, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, /* 27-30 */ - EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, /* 31-35 */ - EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, /* 36-40 */ - EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, /* 40-45 */ - EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, /* 46-50 */ - EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, /* 51-55 */ - EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, /* 56-60 */ - EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, /* 61-65 */ - EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, /* 66-70 */ - EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, /* 71-75 */ - EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, /* 76-80 */ - EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, /* 81-85 */ - EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, /* 86-90 */ - EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, /* 91-95 */ - EMPTYFEAT, EMPTYFEAT, EMPTYFEAT, /* 96-98 */ - EMPTYFEAT, /* 99 */ { /* 100 => 22 */ - "Text Spacing", - 1, - { - "Proportional", - "Monospaced", - "Half-width", - "Normal", - NULL - } - }, { /* 101 => 25 */ - "Kana Spacing", - 1, - { - "Full Width", - "Proportional", - NULL - } - }, { /* 102 => 26 */ - "Ideographic Spacing", - 1, - { - "Full Width", - "Proportional", - NULL - } - }, { /* 103 */ - "CJK Roman Spacing", - 1, - { - "Half-width", - "Proportional", - "Default Roman", - "Full-width Roman", - NULL - } - }, { /* 104 => 1 */ - "All Typographic Features", - 0, - { - "All Type Features", - NULL - } - } - }; - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** Generator *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - int - main( void ) - { - int i; - - - printf( " {\n" ); - printf( " /* Generated from %s */\n", __FILE__ ); - - for ( i = 0; - i < sizeof ( featreg_table ) / sizeof ( GX_Feature_RegistryRec ); - i++ ) - { - const char* feat_name; - int nSettings; - - - feat_name = featreg_table[i].feat_name; - for ( nSettings = 0; - featreg_table[i].setting_name[nSettings]; - nSettings++) - ; /* Do nothing */ - - printf( " {%1d, %1d, %1d, %2d}, /* %s */\n", - feat_name ? 1 : 0, - ( feat_name && - ( ft_strncmp( feat_name, - APPLE_RESERVED, APPLE_RESERVED_LENGTH ) == 0 ) - ) ? 1 : 0, - featreg_table[i].exclusive ? 1 : 0, - nSettings, - feat_name ? feat_name : "__EMPTY__" ); - } - - printf( " };\n" ); - - return 0; - } - - -/* END */ diff --git a/src/gxvalid/gxvjust.c b/src/gxvalid/gxvjust.c deleted file mode 100644 index 29bf840..0000000 --- a/src/gxvalid/gxvjust.c +++ /dev/null @@ -1,630 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvjust.c */ -/* */ -/* TrueTypeGX/AAT just table validation (body). */ -/* */ -/* Copyright 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvalid.h" -#include "gxvcommn.h" - -#include FT_SFNT_NAMES_H - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvjust - - /* - * referred `just' table format specification: - * http://developer.apple.com/fonts/TTRefMan/RM06/Chap6just.html - * last updated 2000. - * ---------------------------------------------- - * [JUST HEADER]: GXV_JUST_HEADER_SIZE - * version (fixed: 32bit) = 0x00010000 - * format (uint16: 16bit) = 0 is only defined (2000) - * horizOffset (uint16: 16bit) - * vertOffset (uint16: 16bit) - * ---------------------------------------------- - */ - - typedef struct GXV_just_DataRec_ - { - FT_UShort wdc_offset_max; - FT_UShort wdc_offset_min; - FT_UShort pc_offset_max; - FT_UShort pc_offset_min; - - } GXV_just_DataRec, *GXV_just_Data; - - -#define GXV_JUST_DATA( a ) GXV_TABLE_DATA( just, a ) - - - static void - gxv_just_wdp_entry_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_ULong justClass; - FT_Fixed beforeGrowLimit; - FT_Fixed beforeShrinkGrowLimit; - FT_Fixed afterGrowLimit; - FT_Fixed afterShrinkGrowLimit; - FT_UShort growFlags; - FT_UShort shrinkFlags; - - - GXV_LIMIT_CHECK( 4 + 4 + 4 + 4 + 4 + 2 + 2 ); - justClass = FT_NEXT_ULONG( p ); - beforeGrowLimit = FT_NEXT_ULONG( p ); - beforeShrinkGrowLimit = FT_NEXT_ULONG( p ); - afterGrowLimit = FT_NEXT_ULONG( p ); - afterShrinkGrowLimit = FT_NEXT_ULONG( p ); - growFlags = FT_NEXT_USHORT( p ); - shrinkFlags = FT_NEXT_USHORT( p ); - - /* TODO: decode flags for human readability */ - - valid->subtable_length = p - table; - } - - - static void - gxv_just_wdc_entry_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_ULong count, i; - - - GXV_LIMIT_CHECK( 4 ); - count = FT_NEXT_ULONG( p ); - for ( i = 0; i < count; i++ ) - { - GXV_TRACE(( "validating wdc pair %d/%d\n", i + 1, count )); - gxv_just_wdp_entry_validate( p, limit, valid ); - p += valid->subtable_length; - } - - valid->subtable_length = p - table; - } - - - static void - gxv_just_widthDeltaClusters_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table ; - FT_Bytes wdc_end = table + GXV_JUST_DATA( wdc_offset_max ); - FT_UInt i; - - - GXV_NAME_ENTER( "just justDeltaClusters" ); - - if ( limit <= wdc_end ) - FT_INVALID_OFFSET; - - for ( i = 0; p <= wdc_end; i++ ) - { - gxv_just_wdc_entry_validate( p, limit, valid ); - p += valid->subtable_length; - } - - valid->subtable_length = p - table; - - GXV_EXIT; - } - - - static void - gxv_just_actSubrecord_type0_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - FT_Fixed lowerLimit; - FT_Fixed upperLimit; - - FT_UShort order; - FT_UShort decomposedCount; - - FT_UInt i; - - - GXV_LIMIT_CHECK( 4 + 4 + 2 + 2 ); - lowerLimit = FT_NEXT_ULONG( p ); - upperLimit = FT_NEXT_ULONG( p ); - order = FT_NEXT_USHORT( p ); - decomposedCount = FT_NEXT_USHORT( p ); - - for ( i = 0; i < decomposedCount; i++ ) - { - FT_UShort glyphs; - - - GXV_LIMIT_CHECK( 2 ); - glyphs = FT_NEXT_USHORT( p ); - } - - valid->subtable_length = p - table; - } - - - static void - gxv_just_actSubrecord_type1_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UShort addGlyph; - - - GXV_LIMIT_CHECK( 2 ); - addGlyph = FT_NEXT_USHORT( p ); - - valid->subtable_length = p - table; - } - - - static void - gxv_just_actSubrecord_type2_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_Fixed substThreshhold; /* Apple misspelled "Threshhold" */ - FT_UShort addGlyph; - FT_UShort substGlyph; - - - GXV_LIMIT_CHECK( 4 + 2 + 2 ); - substThreshhold = FT_NEXT_ULONG( p ); - addGlyph = FT_NEXT_USHORT( p ); - substGlyph = FT_NEXT_USHORT( p ); - - valid->subtable_length = p - table; - } - - - static void - gxv_just_actSubrecord_type4_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_ULong variantsAxis; - FT_Fixed minimumLimit; - FT_Fixed noStretchValue; - FT_Fixed maximumLimit; - - - GXV_LIMIT_CHECK( 4 + 4 + 4 + 4 ); - variantsAxis = FT_NEXT_ULONG( p ); - minimumLimit = FT_NEXT_ULONG( p ); - noStretchValue = FT_NEXT_ULONG( p ); - maximumLimit = FT_NEXT_ULONG( p ); - - valid->subtable_length = p - table; - } - - - static void - gxv_just_actSubrecord_type5_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UShort flags; - FT_UShort glyph; - - - GXV_LIMIT_CHECK( 2 + 2 ); - flags = FT_NEXT_USHORT( p ); - glyph = FT_NEXT_USHORT( p ); - - valid->subtable_length = p - table; - } - - - /* parse single actSubrecord */ - static void - gxv_just_actSubrecord_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UShort actionClass; - FT_UShort actionType; - FT_ULong actionLength; - - - GXV_NAME_ENTER( "just actSubrecord" ); - - GXV_LIMIT_CHECK( 2 + 2 + 4 ); - actionClass = FT_NEXT_USHORT( p ); - actionType = FT_NEXT_USHORT( p ); - actionLength = FT_NEXT_ULONG( p ); - - if ( actionType == 0 ) - gxv_just_actSubrecord_type0_validate( p, limit, valid ); - else if ( actionType == 1 ) - gxv_just_actSubrecord_type1_validate( p, limit, valid ); - else if ( actionType == 2 ) - gxv_just_actSubrecord_type2_validate( p, limit, valid ); - else if ( actionType == 3 ) - ; /* Stretch glyph action: no actionData */ - else if ( actionType == 4 ) - gxv_just_actSubrecord_type4_validate( p, limit, valid ); - else if ( actionType == 5 ) - gxv_just_actSubrecord_type5_validate( p, limit, valid ); - else - FT_INVALID_DATA; - - valid->subtable_length = actionLength; - - GXV_EXIT; - } - - - static void - gxv_just_pcActionRecord_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_ULong actionCount; - FT_ULong i; - - - GXV_LIMIT_CHECK( 4 ); - actionCount = FT_NEXT_ULONG( p ); - GXV_TRACE(( "actionCount = %d\n", actionCount )); - - for ( i = 0; i < actionCount; i++ ) - { - gxv_just_actSubrecord_validate( p, limit, valid ); - p += valid->subtable_length; - } - - valid->subtable_length = p - table; - - GXV_EXIT; - } - - - static void - gxv_just_pcTable_LookupValue_entry_validate( FT_UShort glyph, - GXV_LookupValueDesc value, - GXV_Validator valid ) - { - FT_UNUSED( glyph ); - - if ( value.u > GXV_JUST_DATA( pc_offset_max ) ) - GXV_JUST_DATA( pc_offset_max ) = value.u; - if ( value.u < GXV_JUST_DATA( pc_offset_max ) ) - GXV_JUST_DATA( pc_offset_min ) = value.u; - } - - - static void - gxv_just_pcLookupTable_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - - GXV_NAME_ENTER( "just pcLookupTable" ); - GXV_JUST_DATA( pc_offset_max ) = 0x0000; - GXV_JUST_DATA( pc_offset_min ) = 0xFFFFU; - - valid->lookupval_sign = GXV_LOOKUPVALUE_UNSIGNED; - valid->lookupval_func = gxv_just_pcTable_LookupValue_entry_validate; - - gxv_LookupTable_validate( p, limit, valid ); - - /* subtable_length is set by gxv_LookupTable_validate() */ - - GXV_EXIT; - } - - - static void - gxv_just_postcompTable_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - - GXV_NAME_ENTER( "just postcompTable" ); - - gxv_just_pcLookupTable_validate( p, limit, valid ); - p += valid->subtable_length; - - gxv_just_pcActionRecord_validate( p, limit, valid ); - p += valid->subtable_length; - - valid->subtable_length = p - table; - - GXV_EXIT; - } - - - static void - gxv_just_classTable_entry_validate( - FT_Byte state, - FT_UShort flags, - GXV_StateTable_GlyphOffsetDesc glyphOffset, - FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_UShort setMark; - FT_UShort dontAdvance; - FT_UShort markClass; - FT_UShort currentClass; - - FT_UNUSED( state ); - FT_UNUSED( glyphOffset ); - FT_UNUSED( table ); - FT_UNUSED( limit ); - FT_UNUSED( valid ); - - - setMark = (FT_UShort)( ( flags >> 15 ) & 1 ); - dontAdvance = (FT_UShort)( ( flags >> 14 ) & 1 ); - markClass = (FT_UShort)( ( flags >> 7 ) & 0x7F ); - currentClass = (FT_UShort)( flags & 0x7F ); - - /* TODO: validate markClass & currentClass */ - } - - - static void - gxv_just_justClassTable_validate ( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UShort length; - FT_UShort coverage; - FT_ULong subFeatureFlags; - - - GXV_NAME_ENTER( "just justClassTable" ); - - GXV_LIMIT_CHECK( 2 + 2 + 4 ); - length = FT_NEXT_USHORT( p ); - coverage = FT_NEXT_USHORT( p ); - subFeatureFlags = FT_NEXT_ULONG( p ); - - GXV_TRACE(( " justClassTable: coverage = 0x%04x (%s)", - coverage, - ( 0x4000 & coverage ) == 0 ? "ascending" : "descending" )); - - valid->statetable.optdata = NULL; - valid->statetable.optdata_load_func = NULL; - valid->statetable.subtable_setup_func = NULL; - valid->statetable.entry_glyphoffset_fmt = GXV_GLYPHOFFSET_NONE; - valid->statetable.entry_validate_func = - gxv_just_classTable_entry_validate; - - gxv_StateTable_validate( p, table + length, valid ); - - /* subtable_length is set by gxv_LookupTable_validate() */ - - GXV_EXIT; - } - - - static void - gxv_just_wdcTable_LookupValue_validate( FT_UShort glyph, - GXV_LookupValueDesc value, - GXV_Validator valid ) - { - FT_UNUSED( glyph ); - - if ( value.u > GXV_JUST_DATA( wdc_offset_max ) ) - GXV_JUST_DATA( wdc_offset_max ) = value.u; - if ( value.u < GXV_JUST_DATA( wdc_offset_min ) ) - GXV_JUST_DATA( wdc_offset_min ) = value.u; - } - - - static void - gxv_just_justData_lookuptable_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - - GXV_JUST_DATA( wdc_offset_max ) = 0x0000; - GXV_JUST_DATA( wdc_offset_min ) = 0xFFFFU; - - valid->lookupval_sign = GXV_LOOKUPVALUE_UNSIGNED; - valid->lookupval_func = gxv_just_wdcTable_LookupValue_validate; - - gxv_LookupTable_validate( p, limit, valid ); - - /* subtable_length is set by gxv_LookupTable_validate() */ - - GXV_EXIT; - } - - - /* - * gxv_just_justData_validate() parses and validates horizData, vertData. - */ - static void - gxv_just_justData_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - /* - * following 3 offsets are measured from the start of `just' - * (which table points to), not justData - */ - FT_UShort justClassTableOffset; - FT_UShort wdcTableOffset; - FT_UShort pcTableOffset; - FT_Bytes p = table; - - GXV_ODTECT( 4, odtect ); - - - GXV_NAME_ENTER( "just justData" ); - - GXV_ODTECT_INIT( odtect ); - GXV_LIMIT_CHECK( 2 + 2 + 2 ); - justClassTableOffset = FT_NEXT_USHORT( p ); - wdcTableOffset = FT_NEXT_USHORT( p ); - pcTableOffset = FT_NEXT_USHORT( p ); - - GXV_TRACE(( " (justClassTableOffset = 0x%04x)\n", justClassTableOffset )); - GXV_TRACE(( " (wdcTableOffset = 0x%04x)\n", wdcTableOffset )); - GXV_TRACE(( " (pcTableOffset = 0x%04x)\n", pcTableOffset )); - - gxv_just_justData_lookuptable_validate( p, limit, valid ); - gxv_odtect_add_range( p, valid->subtable_length, - "just_LookupTable", odtect ); - - if ( wdcTableOffset ) - { - gxv_just_widthDeltaClusters_validate( - valid->root->base + wdcTableOffset, limit, valid ); - gxv_odtect_add_range( valid->root->base + wdcTableOffset, - valid->subtable_length, "just_wdcTable", odtect ); - } - - if ( pcTableOffset ) - { - gxv_just_postcompTable_validate( valid->root->base + pcTableOffset, - limit, valid ); - gxv_odtect_add_range( valid->root->base + pcTableOffset, - valid->subtable_length, "just_pcTable", odtect ); - } - - if ( justClassTableOffset ) - { - gxv_just_justClassTable_validate( - valid->root->base + justClassTableOffset, limit, valid ); - gxv_odtect_add_range( valid->root->base + justClassTableOffset, - valid->subtable_length, "just_justClassTable", - odtect ); - } - - gxv_odtect_validate( odtect, valid ); - - GXV_EXIT; - } - - - FT_LOCAL_DEF( void ) - gxv_just_validate( FT_Bytes table, - FT_Face face, - FT_Validator ftvalid ) - { - FT_Bytes p = table; - FT_Bytes limit = 0; - FT_UInt table_size; - - GXV_ValidatorRec validrec; - GXV_Validator valid = &validrec; - GXV_just_DataRec justrec; - GXV_just_Data just = &justrec; - - FT_ULong version; - FT_UShort format; - FT_UShort horizOffset; - FT_UShort vertOffset; - - GXV_ODTECT( 3, odtect ); - - - GXV_ODTECT_INIT( odtect ); - - valid->root = ftvalid; - valid->table_data = just; - valid->face = face; - - FT_TRACE3(( "validating `just' table\n" )); - GXV_INIT; - - limit = valid->root->limit; - table_size = limit - table; - - GXV_LIMIT_CHECK( 4 + 2 + 2 + 2 ); - version = FT_NEXT_ULONG( p ); - format = FT_NEXT_USHORT( p ); - horizOffset = FT_NEXT_USHORT( p ); - vertOffset = FT_NEXT_USHORT( p ); - gxv_odtect_add_range( table, p - table, "just header", odtect ); - - - /* Version 1.0 (always:2000) */ - GXV_TRACE(( " (version = 0x%08x)\n", version )); - if ( version != 0x00010000UL ) - FT_INVALID_FORMAT; - - /* format 0 (always:2000) */ - GXV_TRACE(( " (format = 0x%04x)\n", format )); - if ( format != 0x0000 ) - FT_INVALID_FORMAT; - - GXV_TRACE(( " (horizOffset = %d)\n", horizOffset )); - GXV_TRACE(( " (vertOffset = %d)\n", vertOffset )); - - - /* validate justData */ - if ( 0 < horizOffset ) - { - gxv_just_justData_validate( table + horizOffset, limit, valid ); - gxv_odtect_add_range( table + horizOffset, valid->subtable_length, - "horizJustData", odtect ); - } - - if ( 0 < vertOffset ) - { - gxv_just_justData_validate( table + vertOffset, limit, valid ); - gxv_odtect_add_range( table + vertOffset, valid->subtable_length, - "vertJustData", odtect ); - } - - gxv_odtect_validate( odtect, valid ); - - FT_TRACE4(( "\n" )); - } - - -/* END */ diff --git a/src/gxvalid/gxvkern.c b/src/gxvalid/gxvkern.c deleted file mode 100644 index bfb405f..0000000 --- a/src/gxvalid/gxvkern.c +++ /dev/null @@ -1,876 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvkern.c */ -/* */ -/* TrueTypeGX/AAT kern table validation (body). */ -/* */ -/* Copyright 2004, 2005, 2006, 2007 */ -/* by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvalid.h" -#include "gxvcommn.h" - -#include FT_SFNT_NAMES_H -#include FT_SERVICE_GX_VALIDATE_H - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvkern - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** Data and Types *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - typedef enum GXV_kern_Version_ - { - KERN_VERSION_CLASSIC = 0x0000, - KERN_VERSION_NEW = 0x0001 - - } GXV_kern_Version; - - - typedef enum GXV_kern_Dialect_ - { - KERN_DIALECT_UNKNOWN = 0, - KERN_DIALECT_MS = FT_VALIDATE_MS, - KERN_DIALECT_APPLE = FT_VALIDATE_APPLE, - KERN_DIALECT_ANY = FT_VALIDATE_CKERN - - } GXV_kern_Dialect; - - - typedef struct GXV_kern_DataRec_ - { - GXV_kern_Version version; - void *subtable_data; - GXV_kern_Dialect dialect_request; - - } GXV_kern_DataRec, *GXV_kern_Data; - - -#define GXV_KERN_DATA( field ) GXV_TABLE_DATA( kern, field ) - -#define KERN_IS_CLASSIC( valid ) \ - ( KERN_VERSION_CLASSIC == GXV_KERN_DATA( version ) ) -#define KERN_IS_NEW( valid ) \ - ( KERN_VERSION_NEW == GXV_KERN_DATA( version ) ) - -#define KERN_DIALECT( valid ) \ - GXV_KERN_DATA( dialect_request ) -#define KERN_ALLOWS_MS( valid ) \ - ( KERN_DIALECT( valid ) & KERN_DIALECT_MS ) -#define KERN_ALLOWS_APPLE( valid ) \ - ( KERN_DIALECT( valid ) & KERN_DIALECT_APPLE ) - -#define GXV_KERN_HEADER_SIZE ( KERN_IS_NEW( valid ) ? 8 : 4 ) -#define GXV_KERN_SUBTABLE_HEADER_SIZE ( KERN_IS_NEW( valid ) ? 8 : 6 ) - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** SUBTABLE VALIDATORS *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - - /* ============================= format 0 ============================== */ - - static void - gxv_kern_subtable_fmt0_pairs_validate( FT_Bytes table, - FT_Bytes limit, - FT_UShort nPairs, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UShort i; - - FT_UShort last_gid_left = 0; - FT_UShort last_gid_right = 0; - - FT_UNUSED( limit ); - - - GXV_NAME_ENTER( "kern format 0 pairs" ); - - for ( i = 0; i < nPairs; i++ ) - { - FT_UShort gid_left; - FT_UShort gid_right; - FT_Short kernValue; - - - /* left */ - gid_left = FT_NEXT_USHORT( p ); - gxv_glyphid_validate( gid_left, valid ); - - /* right */ - gid_right = FT_NEXT_USHORT( p ); - gxv_glyphid_validate( gid_right, valid ); - - /* Pairs of left and right GIDs must be unique and sorted. */ - GXV_TRACE(( "left gid = %u, right gid = %u\n", gid_left, gid_right )); - if ( gid_left == last_gid_left ) - { - if ( last_gid_right < gid_right ) - last_gid_right = gid_right; - else - FT_INVALID_DATA; - } - else if ( last_gid_left < gid_left ) - { - last_gid_left = gid_left; - last_gid_right = gid_right; - } - else - FT_INVALID_DATA; - - /* skip the kern value */ - kernValue = FT_NEXT_SHORT( p ); - } - - GXV_EXIT; - } - - static void - gxv_kern_subtable_fmt0_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table + GXV_KERN_SUBTABLE_HEADER_SIZE; - - FT_UShort nPairs; - FT_UShort unitSize; - - - GXV_NAME_ENTER( "kern subtable format 0" ); - - unitSize = 2 + 2 + 2; - nPairs = 0; - - /* nPairs, searchRange, entrySelector, rangeShift */ - GXV_LIMIT_CHECK( 2 + 2 + 2 + 2 ); - gxv_BinSrchHeader_validate( p, limit, &unitSize, &nPairs, valid ); - p += 2 + 2 + 2 + 2; - - gxv_kern_subtable_fmt0_pairs_validate( p, limit, nPairs, valid ); - - GXV_EXIT; - } - - - /* ============================= format 1 ============================== */ - - - typedef struct GXV_kern_fmt1_StateOptRec_ - { - FT_UShort valueTable; - FT_UShort valueTable_length; - - } GXV_kern_fmt1_StateOptRec, *GXV_kern_fmt1_StateOptRecData; - - - static void - gxv_kern_subtable_fmt1_valueTable_load( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - GXV_kern_fmt1_StateOptRecData optdata = - (GXV_kern_fmt1_StateOptRecData)valid->statetable.optdata; - - - GXV_LIMIT_CHECK( 2 ); - optdata->valueTable = FT_NEXT_USHORT( p ); - } - - - /* - * passed tables_size covers whole StateTable, including kern fmt1 header - */ - static void - gxv_kern_subtable_fmt1_subtable_setup( FT_UShort table_size, - FT_UShort classTable, - FT_UShort stateArray, - FT_UShort entryTable, - FT_UShort* classTable_length_p, - FT_UShort* stateArray_length_p, - FT_UShort* entryTable_length_p, - GXV_Validator valid ) - { - FT_UShort o[4]; - FT_UShort *l[4]; - FT_UShort buff[5]; - - GXV_kern_fmt1_StateOptRecData optdata = - (GXV_kern_fmt1_StateOptRecData)valid->statetable.optdata; - - - o[0] = classTable; - o[1] = stateArray; - o[2] = entryTable; - o[3] = optdata->valueTable; - l[0] = classTable_length_p; - l[1] = stateArray_length_p; - l[2] = entryTable_length_p; - l[3] = &(optdata->valueTable_length); - - gxv_set_length_by_ushort_offset( o, l, buff, 4, table_size, valid ); - } - - - /* - * passed table & limit are of whole StateTable, not including subtables - */ - static void - gxv_kern_subtable_fmt1_entry_validate( - FT_Byte state, - FT_UShort flags, - GXV_StateTable_GlyphOffsetDesc glyphOffset, - FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_UShort push; - FT_UShort dontAdvance; - FT_UShort valueOffset; - FT_UShort kernAction; - FT_UShort kernValue; - - FT_UNUSED( state ); - FT_UNUSED( glyphOffset ); - - - push = (FT_UShort)( ( flags >> 15 ) & 1 ); - dontAdvance = (FT_UShort)( ( flags >> 14 ) & 1 ); - valueOffset = (FT_UShort)( flags & 0x3FFF ); - - { - GXV_kern_fmt1_StateOptRecData vt_rec = - (GXV_kern_fmt1_StateOptRecData)valid->statetable.optdata; - FT_Bytes p; - - - if ( valueOffset < vt_rec->valueTable ) - FT_INVALID_OFFSET; - - p = table + valueOffset; - limit = table + vt_rec->valueTable + vt_rec->valueTable_length; - - GXV_LIMIT_CHECK( 2 + 2 ); - kernAction = FT_NEXT_USHORT( p ); - kernValue = FT_NEXT_USHORT( p ); - } - } - - - static void - gxv_kern_subtable_fmt1_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - GXV_kern_fmt1_StateOptRec vt_rec; - - - GXV_NAME_ENTER( "kern subtable format 1" ); - - valid->statetable.optdata = - &vt_rec; - valid->statetable.optdata_load_func = - gxv_kern_subtable_fmt1_valueTable_load; - valid->statetable.subtable_setup_func = - gxv_kern_subtable_fmt1_subtable_setup; - valid->statetable.entry_glyphoffset_fmt = - GXV_GLYPHOFFSET_NONE; - valid->statetable.entry_validate_func = - gxv_kern_subtable_fmt1_entry_validate; - - gxv_StateTable_validate( p, limit, valid ); - - GXV_EXIT; - } - - - /* ================ Data for Class-Based Subtables 2, 3 ================ */ - - typedef enum GXV_kern_ClassSpec_ - { - GXV_KERN_CLS_L = 0, - GXV_KERN_CLS_R - - } GXV_kern_ClassSpec; - - - /* ============================= format 2 ============================== */ - - /* ---------------------- format 2 specific data ----------------------- */ - - typedef struct GXV_kern_subtable_fmt2_DataRec_ - { - FT_UShort rowWidth; - FT_UShort array; - FT_UShort offset_min[2]; - FT_UShort offset_max[2]; - const FT_String* class_tag[2]; - GXV_odtect_Range odtect; - - } GXV_kern_subtable_fmt2_DataRec, *GXV_kern_subtable_fmt2_Data; - - -#define GXV_KERN_FMT2_DATA( field ) \ - ( ( (GXV_kern_subtable_fmt2_DataRec *) \ - ( GXV_KERN_DATA( subtable_data ) ) )->field ) - - - /* -------------------------- utility functions ----------------------- */ - - static void - gxv_kern_subtable_fmt2_clstbl_validate( FT_Bytes table, - FT_Bytes limit, - GXV_kern_ClassSpec spec, - GXV_Validator valid ) - { - const FT_String* tag = GXV_KERN_FMT2_DATA( class_tag[spec] ); - GXV_odtect_Range odtect = GXV_KERN_FMT2_DATA( odtect ); - - FT_Bytes p = table; - FT_UShort firstGlyph; - FT_UShort nGlyphs; - - - GXV_NAME_ENTER( "kern format 2 classTable" ); - - GXV_LIMIT_CHECK( 2 + 2 ); - firstGlyph = FT_NEXT_USHORT( p ); - nGlyphs = FT_NEXT_USHORT( p ); - GXV_TRACE(( " %s firstGlyph=%d, nGlyphs=%d\n", - tag, firstGlyph, nGlyphs )); - - gxv_glyphid_validate( firstGlyph, valid ); - gxv_glyphid_validate( (FT_UShort)( firstGlyph + nGlyphs - 1 ), valid ); - - gxv_array_getlimits_ushort( p, p + ( 2 * nGlyphs ), - &( GXV_KERN_FMT2_DATA( offset_min[spec] ) ), - &( GXV_KERN_FMT2_DATA( offset_max[spec] ) ), - valid ); - - gxv_odtect_add_range( table, 2 * nGlyphs, tag, odtect ); - - GXV_EXIT; - } - - - static void - gxv_kern_subtable_fmt2_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - GXV_ODTECT( 3, odtect ); - GXV_kern_subtable_fmt2_DataRec fmt2_rec = - { 0, 0, { 0, 0 }, { 0, 0 }, { "leftClass", "rightClass" }, NULL }; - - FT_Bytes p = table + GXV_KERN_SUBTABLE_HEADER_SIZE; - FT_UShort leftOffsetTable; - FT_UShort rightOffsetTable; - - - GXV_NAME_ENTER( "kern subtable format 2" ); - - GXV_ODTECT_INIT( odtect ); - fmt2_rec.odtect = odtect; - GXV_KERN_DATA( subtable_data ) = &fmt2_rec; - - GXV_LIMIT_CHECK( 2 + 2 + 2 + 2 ); - GXV_KERN_FMT2_DATA( rowWidth ) = FT_NEXT_USHORT( p ); - leftOffsetTable = FT_NEXT_USHORT( p ); - rightOffsetTable = FT_NEXT_USHORT( p ); - GXV_KERN_FMT2_DATA( array ) = FT_NEXT_USHORT( p ); - - GXV_TRACE(( "rowWidth = %d\n", GXV_KERN_FMT2_DATA( rowWidth ) )); - - - GXV_LIMIT_CHECK( leftOffsetTable ); - GXV_LIMIT_CHECK( rightOffsetTable ); - GXV_LIMIT_CHECK( GXV_KERN_FMT2_DATA( array ) ); - - gxv_kern_subtable_fmt2_clstbl_validate( table + leftOffsetTable, limit, - GXV_KERN_CLS_L, valid ); - - gxv_kern_subtable_fmt2_clstbl_validate( table + rightOffsetTable, limit, - GXV_KERN_CLS_R, valid ); - - if ( GXV_KERN_FMT2_DATA( offset_min[GXV_KERN_CLS_L] ) + - GXV_KERN_FMT2_DATA( offset_min[GXV_KERN_CLS_R] ) - < GXV_KERN_FMT2_DATA( array ) ) - FT_INVALID_OFFSET; - - gxv_odtect_add_range( table + GXV_KERN_FMT2_DATA( array ), - GXV_KERN_FMT2_DATA( offset_max[GXV_KERN_CLS_L] ) - + GXV_KERN_FMT2_DATA( offset_max[GXV_KERN_CLS_R] ) - - GXV_KERN_FMT2_DATA( array ), - "array", odtect ); - - gxv_odtect_validate( odtect, valid ); - - GXV_EXIT; - } - - - /* ============================= format 3 ============================== */ - - static void - gxv_kern_subtable_fmt3_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table + GXV_KERN_SUBTABLE_HEADER_SIZE; - FT_UShort glyphCount; - FT_Byte kernValueCount; - FT_Byte leftClassCount; - FT_Byte rightClassCount; - FT_Byte flags; - - - GXV_NAME_ENTER( "kern subtable format 3" ); - - GXV_LIMIT_CHECK( 2 + 1 + 1 + 1 + 1 ); - glyphCount = FT_NEXT_USHORT( p ); - kernValueCount = FT_NEXT_BYTE( p ); - leftClassCount = FT_NEXT_BYTE( p ); - rightClassCount = FT_NEXT_BYTE( p ); - flags = FT_NEXT_BYTE( p ); - - if ( valid->face->num_glyphs != glyphCount ) - { - GXV_TRACE(( "maxGID=%d, but glyphCount=%d\n", - valid->face->num_glyphs, glyphCount )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_GLYPH_ID; - } - - /* - * just skip kernValue[kernValueCount] - */ - GXV_LIMIT_CHECK( 2 * kernValueCount ); - p += 2 * kernValueCount; - - /* - * check leftClass[gid] < leftClassCount - */ - { - FT_Byte min, max; - - - GXV_LIMIT_CHECK( glyphCount ); - gxv_array_getlimits_byte( p, p + glyphCount, &min, &max, valid ); - p += valid->subtable_length; - - if ( leftClassCount < max ) - FT_INVALID_DATA; - } - - /* - * check rightClass[gid] < rightClassCount - */ - { - FT_Byte min, max; - - - GXV_LIMIT_CHECK( glyphCount ); - gxv_array_getlimits_byte( p, p + glyphCount, &min, &max, valid ); - p += valid->subtable_length; - - if ( rightClassCount < max ) - FT_INVALID_DATA; - } - - /* - * check kernIndex[i, j] < kernValueCount - */ - { - FT_UShort i, j; - - - for ( i = 0; i < leftClassCount; i++ ) - { - for ( j = 0; j < rightClassCount; j++ ) - { - GXV_LIMIT_CHECK( 1 ); - if ( kernValueCount < FT_NEXT_BYTE( p ) ) - FT_INVALID_OFFSET; - } - } - } - - valid->subtable_length = p - table; - - GXV_EXIT; - } - - - static FT_Bool - gxv_kern_coverage_new_apple_validate( FT_UShort coverage, - FT_UShort* format, - GXV_Validator valid ) - { - /* new Apple-dialect */ - FT_Bool kernVertical; - FT_Bool kernCrossStream; - FT_Bool kernVariation; - - FT_UNUSED( valid ); - - - /* reserved bits = 0 */ - if ( coverage & 0x1FFC ) - return 0; - - kernVertical = FT_BOOL( ( coverage >> 15 ) & 1 ); - kernCrossStream = FT_BOOL( ( coverage >> 14 ) & 1 ); - kernVariation = FT_BOOL( ( coverage >> 13 ) & 1 ); - - *format = (FT_UShort)( coverage & 0x0003 ); - - GXV_TRACE(( "new Apple-dialect: " - "horizontal=%d, cross-stream=%d, variation=%d, format=%d\n", - !kernVertical, kernCrossStream, kernVariation, *format )); - - GXV_TRACE(( "kerning values in Apple format subtable are ignored\n" )); - - return 1; - } - - - static FT_Bool - gxv_kern_coverage_classic_apple_validate( FT_UShort coverage, - FT_UShort* format, - GXV_Validator valid ) - { - /* classic Apple-dialect */ - FT_Bool horizontal; - FT_Bool cross_stream; - - - /* check expected flags, but don't check if MS-dialect is impossible */ - if ( !( coverage & 0xFD00 ) && KERN_ALLOWS_MS( valid ) ) - return 0; - - /* reserved bits = 0 */ - if ( coverage & 0x02FC ) - return 0; - - horizontal = FT_BOOL( ( coverage >> 15 ) & 1 ); - cross_stream = FT_BOOL( ( coverage >> 13 ) & 1 ); - - *format = (FT_UShort)( coverage & 0x0003 ); - - GXV_TRACE(( "classic Apple-dialect: " - "horizontal=%d, cross-stream=%d, format=%d\n", - horizontal, cross_stream, *format )); - - /* format 1 requires GX State Machine, too new for classic */ - if ( *format == 1 ) - return 0; - - GXV_TRACE(( "kerning values in Apple format subtable are ignored\n" )); - - return 1; - } - - - static FT_Bool - gxv_kern_coverage_classic_microsoft_validate( FT_UShort coverage, - FT_UShort* format, - GXV_Validator valid ) - { - /* classic Microsoft-dialect */ - FT_Bool horizontal; - FT_Bool minimum; - FT_Bool cross_stream; - FT_Bool override; - - FT_UNUSED( valid ); - - - /* reserved bits = 0 */ - if ( coverage & 0xFDF0 ) - return 0; - - horizontal = FT_BOOL( coverage & 1 ); - minimum = FT_BOOL( ( coverage >> 1 ) & 1 ); - cross_stream = FT_BOOL( ( coverage >> 2 ) & 1 ); - override = FT_BOOL( ( coverage >> 3 ) & 1 ); - - *format = (FT_UShort)( ( coverage >> 8 ) & 0x0003 ); - - GXV_TRACE(( "classic Microsoft-dialect: " - "horizontal=%d, minimum=%d, cross-stream=%d, " - "override=%d, format=%d\n", - horizontal, minimum, cross_stream, override, *format )); - - if ( *format == 2 ) - GXV_TRACE(( - "kerning values in Microsoft format 2 subtable are ignored\n" )); - - return 1; - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** MAIN *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - static GXV_kern_Dialect - gxv_kern_coverage_validate( FT_UShort coverage, - FT_UShort* format, - GXV_Validator valid ) - { - GXV_kern_Dialect result = KERN_DIALECT_UNKNOWN; - - - GXV_NAME_ENTER( "validating coverage" ); - - GXV_TRACE(( "interprete coverage 0x%04x by Apple style\n", coverage )); - - if ( KERN_IS_NEW( valid ) ) - { - if ( gxv_kern_coverage_new_apple_validate( coverage, - format, - valid ) ) - { - result = KERN_DIALECT_APPLE; - goto Exit; - } - } - - if ( KERN_IS_CLASSIC( valid ) && KERN_ALLOWS_APPLE( valid ) ) - { - if ( gxv_kern_coverage_classic_apple_validate( coverage, - format, - valid ) ) - { - result = KERN_DIALECT_APPLE; - goto Exit; - } - } - - if ( KERN_IS_CLASSIC( valid ) && KERN_ALLOWS_MS( valid ) ) - { - if ( gxv_kern_coverage_classic_microsoft_validate( coverage, - format, - valid ) ) - { - result = KERN_DIALECT_MS; - goto Exit; - } - } - - GXV_TRACE(( "cannot interprete coverage, broken kern subtable\n" )); - - Exit: - GXV_EXIT; - return result; - } - - - static void - gxv_kern_subtable_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UShort version = 0; /* MS only: subtable version, unused */ - FT_ULong length; /* MS: 16bit, Apple: 32bit*/ - FT_UShort coverage; - FT_UShort tupleIndex = 0; /* Apple only */ - FT_UShort u16[2]; - FT_UShort format = 255; /* subtable format */ - - - GXV_NAME_ENTER( "kern subtable" ); - - GXV_LIMIT_CHECK( 2 + 2 + 2 ); - u16[0] = FT_NEXT_USHORT( p ); /* Apple: length_hi MS: version */ - u16[1] = FT_NEXT_USHORT( p ); /* Apple: length_lo MS: length */ - coverage = FT_NEXT_USHORT( p ); - - switch ( gxv_kern_coverage_validate( coverage, &format, valid ) ) - { - case KERN_DIALECT_MS: - version = u16[0]; - length = u16[1]; - tupleIndex = 0; - GXV_TRACE(( "Subtable version = %d\n", version )); - GXV_TRACE(( "Subtable length = %d\n", length )); - break; - - case KERN_DIALECT_APPLE: - version = 0; - length = ( u16[0] << 16 ) + u16[1]; - tupleIndex = 0; - GXV_TRACE(( "Subtable length = %d\n", length )); - - if ( KERN_IS_NEW( valid ) ) - { - GXV_LIMIT_CHECK( 2 ); - tupleIndex = FT_NEXT_USHORT( p ); - GXV_TRACE(( "Subtable tupleIndex = %d\n", tupleIndex )); - } - break; - - default: - length = u16[1]; - GXV_TRACE(( "cannot detect subtable dialect, " - "just skip %d byte\n", length )); - goto Exit; - } - - /* formats 1, 2, 3 require the position of the start of this subtable */ - if ( format == 0 ) - gxv_kern_subtable_fmt0_validate( table, table + length, valid ); - else if ( format == 1 ) - gxv_kern_subtable_fmt1_validate( table, table + length, valid ); - else if ( format == 2 ) - gxv_kern_subtable_fmt2_validate( table, table + length, valid ); - else if ( format == 3 ) - gxv_kern_subtable_fmt3_validate( table, table + length, valid ); - else - FT_INVALID_DATA; - - Exit: - valid->subtable_length = length; - GXV_EXIT; - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** kern TABLE *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - static void - gxv_kern_validate_generic( FT_Bytes table, - FT_Face face, - FT_Bool classic_only, - GXV_kern_Dialect dialect_request, - FT_Validator ftvalid ) - { - GXV_ValidatorRec validrec; - GXV_Validator valid = &validrec; - - GXV_kern_DataRec kernrec; - GXV_kern_Data kern = &kernrec; - - FT_Bytes p = table; - FT_Bytes limit = 0; - - FT_ULong nTables = 0; - FT_UInt i; - - - valid->root = ftvalid; - valid->table_data = kern; - valid->face = face; - - FT_TRACE3(( "validating `kern' table\n" )); - GXV_INIT; - KERN_DIALECT( valid ) = dialect_request; - - GXV_LIMIT_CHECK( 2 ); - GXV_KERN_DATA( version ) = (GXV_kern_Version)FT_NEXT_USHORT( p ); - GXV_TRACE(( "version 0x%04x (higher 16bit)\n", - GXV_KERN_DATA( version ) )); - - if ( 0x0001 < GXV_KERN_DATA( version ) ) - FT_INVALID_FORMAT; - else if ( KERN_IS_CLASSIC( valid ) ) - { - GXV_LIMIT_CHECK( 2 ); - nTables = FT_NEXT_USHORT( p ); - } - else if ( KERN_IS_NEW( valid ) ) - { - if ( classic_only ) - FT_INVALID_FORMAT; - - if ( 0x0000 != FT_NEXT_USHORT( p ) ) - FT_INVALID_FORMAT; - - GXV_LIMIT_CHECK( 4 ); - nTables = FT_NEXT_ULONG( p ); - } - - for ( i = 0; i < nTables; i++ ) - { - GXV_TRACE(( "validating subtable %d/%d\n", i, nTables )); - /* p should be 32bit-aligned? */ - gxv_kern_subtable_validate( p, 0, valid ); - p += valid->subtable_length; - } - - FT_TRACE4(( "\n" )); - } - - - FT_LOCAL_DEF( void ) - gxv_kern_validate( FT_Bytes table, - FT_Face face, - FT_Validator ftvalid ) - { - gxv_kern_validate_generic( table, face, 0, KERN_DIALECT_ANY, ftvalid ); - } - - - FT_LOCAL_DEF( void ) - gxv_kern_validate_classic( FT_Bytes table, - FT_Face face, - FT_Int dialect_flags, - FT_Validator ftvalid ) - { - GXV_kern_Dialect dialect_request; - - - dialect_request = (GXV_kern_Dialect)dialect_flags; - gxv_kern_validate_generic( table, face, 1, dialect_request, ftvalid ); - } - - -/* END */ diff --git a/src/gxvalid/gxvlcar.c b/src/gxvalid/gxvlcar.c deleted file mode 100644 index 48821ea..0000000 --- a/src/gxvalid/gxvlcar.c +++ /dev/null @@ -1,223 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvlcar.c */ -/* */ -/* TrueTypeGX/AAT lcar table validation (body). */ -/* */ -/* Copyright 2004, 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvalid.h" -#include "gxvcommn.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvlcar - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** Data and Types *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - typedef struct GXV_lcar_DataRec_ - { - FT_UShort format; - - } GXV_lcar_DataRec, *GXV_lcar_Data; - - -#define GXV_LCAR_DATA( FIELD ) GXV_TABLE_DATA( lcar, FIELD ) - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** UTILITY FUNCTIONS *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - static void - gxv_lcar_partial_validate( FT_UShort partial, - FT_UShort glyph, - GXV_Validator valid ) - { - GXV_NAME_ENTER( "partial" ); - - if ( GXV_LCAR_DATA( format ) != 1 ) - goto Exit; - - gxv_ctlPoint_validate( glyph, partial, valid ); - - Exit: - GXV_EXIT; - } - - - static void - gxv_lcar_LookupValue_validate( FT_UShort glyph, - GXV_LookupValueDesc value, - GXV_Validator valid ) - { - FT_Bytes p = valid->root->base + value.u; - FT_Bytes limit = valid->root->limit; - FT_UShort count; - FT_Short partial; - FT_UShort i; - - - GXV_NAME_ENTER( "element in lookupTable" ); - - GXV_LIMIT_CHECK( 2 ); - count = FT_NEXT_USHORT( p ); - - GXV_LIMIT_CHECK( 2 * count ); - for ( i = 0; i < count; i++ ) - { - partial = FT_NEXT_SHORT( p ); - gxv_lcar_partial_validate( partial, glyph, valid ); - } - - GXV_EXIT; - } - - - /* - +------ lcar --------------------+ - | | - | +===============+ | - | | looup header | | - | +===============+ | - | | BinSrchHeader | | - | +===============+ | - | | lastGlyph[0] | | - | +---------------+ | - | | firstGlyph[0] | | head of lcar sfnt table - | +---------------+ | + - | | offset[0] | -> | offset [byte] - | +===============+ | + - | | lastGlyph[1] | | (glyphID - firstGlyph) * 2 [byte] - | +---------------+ | - | | firstGlyph[1] | | - | +---------------+ | - | | offset[1] | | - | +===============+ | - | | - | .... | - | | - | 16bit value array | - | +===============+ | - +------| value | <-------+ - | .... - | - | - | - | - | - +----> lcar values...handled by lcar callback function - */ - - static GXV_LookupValueDesc - gxv_lcar_LookupFmt4_transit( FT_UShort relative_gindex, - GXV_LookupValueDesc base_value, - FT_Bytes lookuptbl_limit, - GXV_Validator valid ) - { - FT_Bytes p; - FT_Bytes limit; - FT_UShort offset; - GXV_LookupValueDesc value; - - FT_UNUSED( lookuptbl_limit ); - - /* XXX: check range? */ - offset = (FT_UShort)( base_value.u + - relative_gindex * sizeof ( FT_UShort ) ); - p = valid->root->base + offset; - limit = valid->root->limit; - - GXV_LIMIT_CHECK ( 2 ); - value.u = FT_NEXT_USHORT( p ); - - return value; - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** lcar TABLE *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - FT_LOCAL_DEF( void ) - gxv_lcar_validate( FT_Bytes table, - FT_Face face, - FT_Validator ftvalid ) - { - FT_Bytes p = table; - FT_Bytes limit = 0; - GXV_ValidatorRec validrec; - GXV_Validator valid = &validrec; - - GXV_lcar_DataRec lcarrec; - GXV_lcar_Data lcar = &lcarrec; - - FT_Fixed version; - - - valid->root = ftvalid; - valid->table_data = lcar; - valid->face = face; - - FT_TRACE3(( "validating `lcar' table\n" )); - GXV_INIT; - - GXV_LIMIT_CHECK( 4 + 2 ); - version = FT_NEXT_ULONG( p ); - GXV_LCAR_DATA( format ) = FT_NEXT_USHORT( p ); - - if ( version != 0x00010000UL) - FT_INVALID_FORMAT; - - if ( GXV_LCAR_DATA( format ) > 1 ) - FT_INVALID_FORMAT; - - valid->lookupval_sign = GXV_LOOKUPVALUE_UNSIGNED; - valid->lookupval_func = gxv_lcar_LookupValue_validate; - valid->lookupfmt4_trans = gxv_lcar_LookupFmt4_transit; - gxv_LookupTable_validate( p, limit, valid ); - - FT_TRACE4(( "\n" )); - } - - -/* END */ diff --git a/src/gxvalid/gxvmod.c b/src/gxvalid/gxvmod.c deleted file mode 100644 index b2b16b1..0000000 --- a/src/gxvalid/gxvmod.c +++ /dev/null @@ -1,285 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmod.c */ -/* */ -/* FreeType's TrueTypeGX/AAT validation module implementation (body). */ -/* */ -/* Copyright 2004, 2005, 2006 */ -/* by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include <ft2build.h> -#include FT_TRUETYPE_TABLES_H -#include FT_TRUETYPE_TAGS_H -#include FT_GX_VALIDATE_H -#include FT_INTERNAL_OBJECTS_H -#include FT_SERVICE_GX_VALIDATE_H - -#include "gxvmod.h" -#include "gxvalid.h" -#include "gxvcommn.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvmodule - - - static FT_Error - gxv_load_table( FT_Face face, - FT_Tag tag, - FT_Byte* volatile* table, - FT_ULong* table_len ) - { - FT_Error error; - FT_Memory memory = FT_FACE_MEMORY( face ); - - - error = FT_Load_Sfnt_Table( face, tag, 0, NULL, table_len ); - if ( error == GXV_Err_Table_Missing ) - return GXV_Err_Ok; - if ( error ) - goto Exit; - - if ( FT_ALLOC( *table, *table_len ) ) - goto Exit; - - error = FT_Load_Sfnt_Table( face, tag, 0, *table, table_len ); - - Exit: - return error; - } - - -#define GXV_TABLE_DECL( _sfnt ) \ - FT_Byte* volatile _sfnt = NULL; \ - FT_ULong len_ ## _sfnt = 0 - -#define GXV_TABLE_LOAD( _sfnt ) \ - if ( ( FT_VALIDATE_ ## _sfnt ## _INDEX < table_count ) && \ - ( gx_flags & FT_VALIDATE_ ## _sfnt ) ) \ - { \ - error = gxv_load_table( face, TTAG_ ## _sfnt, \ - &_sfnt, &len_ ## _sfnt ); \ - if ( error ) \ - goto Exit; \ - } - -#define GXV_TABLE_VALIDATE( _sfnt ) \ - if ( _sfnt ) \ - { \ - ft_validator_init( &valid, _sfnt, _sfnt + len_ ## _sfnt, \ - FT_VALIDATE_DEFAULT ); \ - if ( ft_setjmp( valid.jump_buffer ) == 0 ) \ - gxv_ ## _sfnt ## _validate( _sfnt, face, &valid ); \ - error = valid.error; \ - if ( error ) \ - goto Exit; \ - } - -#define GXV_TABLE_SET( _sfnt ) \ - if ( FT_VALIDATE_ ## _sfnt ## _INDEX < table_count ) \ - tables[FT_VALIDATE_ ## _sfnt ## _INDEX] = (FT_Bytes)_sfnt - - - static FT_Error - gxv_validate( FT_Face face, - FT_UInt gx_flags, - FT_Bytes tables[FT_VALIDATE_GX_LENGTH], - FT_UInt table_count ) - { - FT_Memory volatile memory = FT_FACE_MEMORY( face ); - - FT_Error error = GXV_Err_Ok; - FT_ValidatorRec volatile valid; - - FT_UInt i; - - - GXV_TABLE_DECL( feat ); - GXV_TABLE_DECL( bsln ); - GXV_TABLE_DECL( trak ); - GXV_TABLE_DECL( just ); - GXV_TABLE_DECL( mort ); - GXV_TABLE_DECL( morx ); - GXV_TABLE_DECL( kern ); - GXV_TABLE_DECL( opbd ); - GXV_TABLE_DECL( prop ); - GXV_TABLE_DECL( lcar ); - - for ( i = 0; i < table_count; i++ ) - tables[i] = 0; - - /* load tables */ - GXV_TABLE_LOAD( feat ); - GXV_TABLE_LOAD( bsln ); - GXV_TABLE_LOAD( trak ); - GXV_TABLE_LOAD( just ); - GXV_TABLE_LOAD( mort ); - GXV_TABLE_LOAD( morx ); - GXV_TABLE_LOAD( kern ); - GXV_TABLE_LOAD( opbd ); - GXV_TABLE_LOAD( prop ); - GXV_TABLE_LOAD( lcar ); - - /* validate tables */ - GXV_TABLE_VALIDATE( feat ); - GXV_TABLE_VALIDATE( bsln ); - GXV_TABLE_VALIDATE( trak ); - GXV_TABLE_VALIDATE( just ); - GXV_TABLE_VALIDATE( mort ); - GXV_TABLE_VALIDATE( morx ); - GXV_TABLE_VALIDATE( kern ); - GXV_TABLE_VALIDATE( opbd ); - GXV_TABLE_VALIDATE( prop ); - GXV_TABLE_VALIDATE( lcar ); - - /* Set results */ - GXV_TABLE_SET( feat ); - GXV_TABLE_SET( mort ); - GXV_TABLE_SET( morx ); - GXV_TABLE_SET( bsln ); - GXV_TABLE_SET( just ); - GXV_TABLE_SET( kern ); - GXV_TABLE_SET( opbd ); - GXV_TABLE_SET( trak ); - GXV_TABLE_SET( prop ); - GXV_TABLE_SET( lcar ); - - Exit: - if ( error ) - { - FT_FREE( feat ); - FT_FREE( bsln ); - FT_FREE( trak ); - FT_FREE( just ); - FT_FREE( mort ); - FT_FREE( morx ); - FT_FREE( kern ); - FT_FREE( opbd ); - FT_FREE( prop ); - FT_FREE( lcar ); - } - - return error; - } - - - static FT_Error - classic_kern_validate( FT_Face face, - FT_UInt ckern_flags, - FT_Bytes* ckern_table ) - { - FT_Memory volatile memory = FT_FACE_MEMORY( face ); - - FT_Byte* volatile ckern = NULL; - FT_ULong len_ckern = 0; - - /* without volatile on `error' GCC 4.1.1. emits: */ - /* warning: variable 'error' might be clobbered by 'longjmp' or 'vfork' */ - /* this warning seems spurious but --- */ - FT_Error volatile error = GXV_Err_Ok; - FT_ValidatorRec volatile valid; - - - *ckern_table = NULL; - - error = gxv_load_table( face, TTAG_kern, &ckern, &len_ckern ); - if ( error ) - goto Exit; - - if ( ckern ) - { - ft_validator_init( &valid, ckern, ckern + len_ckern, - FT_VALIDATE_DEFAULT ); - if ( ft_setjmp( valid.jump_buffer ) == 0 ) - gxv_kern_validate_classic( ckern, face, - ckern_flags & FT_VALIDATE_CKERN, &valid ); - error = valid.error; - if ( error ) - goto Exit; - } - - *ckern_table = ckern; - - Exit: - if ( error ) - FT_FREE( ckern ); - - return error; - } - - - static - const FT_Service_GXvalidateRec gxvalid_interface = - { - gxv_validate - }; - - - static - const FT_Service_CKERNvalidateRec ckernvalid_interface = - { - classic_kern_validate - }; - - - static - const FT_ServiceDescRec gxvalid_services[] = - { - { FT_SERVICE_ID_GX_VALIDATE, &gxvalid_interface }, - { FT_SERVICE_ID_CLASSICKERN_VALIDATE, &ckernvalid_interface }, - { NULL, NULL } - }; - - - static FT_Pointer - gxvalid_get_service( FT_Module module, - const char* service_id ) - { - FT_UNUSED( module ); - - return ft_service_list_lookup( gxvalid_services, service_id ); - } - - - FT_CALLBACK_TABLE_DEF - const FT_Module_Class gxv_module_class = - { - 0, - sizeof( FT_ModuleRec ), - "gxvalid", - 0x10000L, - 0x20000L, - - 0, /* module-specific interface */ - - (FT_Module_Constructor)0, - (FT_Module_Destructor) 0, - (FT_Module_Requester) gxvalid_get_service - }; - - -/* END */ diff --git a/src/gxvalid/gxvmod.h b/src/gxvalid/gxvmod.h deleted file mode 100644 index 466584e..0000000 --- a/src/gxvalid/gxvmod.h +++ /dev/null @@ -1,46 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmod.h */ -/* */ -/* FreeType's TrueTypeGX/AAT validation module implementation */ -/* (specification). */ -/* */ -/* Copyright 2004, 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#ifndef __GXVMOD_H__ -#define __GXVMOD_H__ - -#include <ft2build.h> -#include FT_MODULE_H - - -FT_BEGIN_HEADER - - - FT_EXPORT_VAR( const FT_Module_Class ) gxv_module_class; - - -FT_END_HEADER - -#endif /* __GXVMOD_H__ */ - - -/* END */ diff --git a/src/gxvalid/gxvmort.c b/src/gxvalid/gxvmort.c deleted file mode 100644 index 6fb71b9..0000000 --- a/src/gxvalid/gxvmort.c +++ /dev/null @@ -1,285 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmort.c */ -/* */ -/* TrueTypeGX/AAT mort table validation (body). */ -/* */ -/* Copyright 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvmort.h" -#include "gxvfeat.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvmort - - - static void - gxv_mort_feature_validate( GXV_mort_feature f, - GXV_Validator valid ) - { - if ( f->featureType > gxv_feat_registry_length ) - { - GXV_TRACE(( "featureType %d is out of registered range, " - "setting %d is unchecked\n", - f->featureType, f->featureSetting )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_DATA; - } - else if ( !gxv_feat_registry[f->featureType].existence ) - { - GXV_TRACE(( "featureType %d is within registered area " - "but undefined, setting %d is unchecked\n", - f->featureType, f->featureSetting )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_DATA; - } - else - { - FT_Byte nSettings_max; - - - /* nSettings in gxvfeat.c is halved for exclusive on/off settings */ - nSettings_max = gxv_feat_registry[f->featureType].nSettings; - if ( gxv_feat_registry[f->featureType].exclusive ) - nSettings_max = (FT_Byte)( 2 * nSettings_max ); - - GXV_TRACE(( "featureType %d is registered", f->featureType )); - GXV_TRACE(( "setting %d", f->featureSetting )); - - if ( f->featureSetting > nSettings_max ) - { - GXV_TRACE(( "out of defined range %d", nSettings_max )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_DATA; - } - GXV_TRACE(( "\n" )); - } - - /* TODO: enableFlags must be unique value in specified chain? */ - } - - - /* - * nFeatureFlags is typed to FT_UInt to accept that in - * mort (typed FT_UShort) and morx (typed FT_ULong). - */ - FT_LOCAL_DEF( void ) - gxv_mort_featurearray_validate( FT_Bytes table, - FT_Bytes limit, - FT_UInt nFeatureFlags, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UInt i; - - GXV_mort_featureRec f = GXV_MORT_FEATURE_OFF; - - - GXV_NAME_ENTER( "mort feature list" ); - for ( i = 0; i < nFeatureFlags; i++ ) - { - GXV_LIMIT_CHECK( 2 + 2 + 4 + 4 ); - f.featureType = FT_NEXT_USHORT( p ); - f.featureSetting = FT_NEXT_USHORT( p ); - f.enableFlags = FT_NEXT_ULONG( p ); - f.disableFlags = FT_NEXT_ULONG( p ); - - gxv_mort_feature_validate( &f, valid ); - } - - if ( !IS_GXV_MORT_FEATURE_OFF( f ) ) - FT_INVALID_DATA; - - valid->subtable_length = p - table; - GXV_EXIT; - } - - - FT_LOCAL_DEF( void ) - gxv_mort_coverage_validate( FT_UShort coverage, - GXV_Validator valid ) - { - FT_UNUSED( valid ); - - if ( coverage & 0x8000U ) - GXV_TRACE(( " this subtable is for vertical text only\n" )); - else - GXV_TRACE(( " this subtable is for horizontal text only\n" )); - - if ( coverage & 0x4000 ) - GXV_TRACE(( " this subtable is applied to glyph array " - "in descending order\n" )); - else - GXV_TRACE(( " this subtable is applied to glyph array " - "in ascending order\n" )); - - if ( coverage & 0x2000 ) - GXV_TRACE(( " this subtable is forcibly applied to " - "vertical/horizontal text\n" )); - - if ( coverage & 0x1FF8 ) - GXV_TRACE(( " coverage has non-zero bits in reserved area\n" )); - } - - - static void - gxv_mort_subtables_validate( FT_Bytes table, - FT_Bytes limit, - FT_UShort nSubtables, - GXV_Validator valid ) - { - FT_Bytes p = table; - - GXV_Validate_Func fmt_funcs_table[] = - { - gxv_mort_subtable_type0_validate, /* 0 */ - gxv_mort_subtable_type1_validate, /* 1 */ - gxv_mort_subtable_type2_validate, /* 2 */ - NULL, /* 3 */ - gxv_mort_subtable_type4_validate, /* 4 */ - gxv_mort_subtable_type5_validate, /* 5 */ - - }; - - GXV_Validate_Func func; - FT_UShort i; - - - GXV_NAME_ENTER( "subtables in a chain" ); - - for ( i = 0; i < nSubtables; i++ ) - { - FT_UShort length; - FT_UShort coverage; - FT_ULong subFeatureFlags; - FT_UInt type; - FT_UInt rest; - - - GXV_LIMIT_CHECK( 2 + 2 + 4 ); - length = FT_NEXT_USHORT( p ); - coverage = FT_NEXT_USHORT( p ); - subFeatureFlags = FT_NEXT_ULONG( p ); - - GXV_TRACE(( "validating chain subtable %d/%d (%d bytes)\n", - i + 1, nSubtables, length )); - type = coverage & 0x0007; - rest = length - ( 2 + 2 + 4 ); - - GXV_LIMIT_CHECK( rest ); - gxv_mort_coverage_validate( coverage, valid ); - - if ( type > 5 ) - FT_INVALID_FORMAT; - - func = fmt_funcs_table[type]; - if ( func == NULL ) - GXV_TRACE(( "morx type %d is reserved\n", type )); - - func( p, p + rest, valid ); - - p += rest; - } - - valid->subtable_length = p - table; - - GXV_EXIT; - } - - - static void - gxv_mort_chain_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_ULong defaultFlags; - FT_ULong chainLength; - FT_UShort nFeatureFlags; - FT_UShort nSubtables; - - - GXV_NAME_ENTER( "mort chain header" ); - - GXV_LIMIT_CHECK( 4 + 4 + 2 + 2 ); - defaultFlags = FT_NEXT_ULONG( p ); - chainLength = FT_NEXT_ULONG( p ); - nFeatureFlags = FT_NEXT_USHORT( p ); - nSubtables = FT_NEXT_USHORT( p ); - - gxv_mort_featurearray_validate( p, table + chainLength, - nFeatureFlags, valid ); - p += valid->subtable_length; - gxv_mort_subtables_validate( p, table + chainLength, nSubtables, valid ); - valid->subtable_length = chainLength; - - GXV_EXIT; - } - - - FT_LOCAL_DEF( void ) - gxv_mort_validate( FT_Bytes table, - FT_Face face, - FT_Validator ftvalid ) - { - GXV_ValidatorRec validrec; - GXV_Validator valid = &validrec; - FT_Bytes p = table; - FT_Bytes limit = 0; - FT_ULong version; - FT_ULong nChains; - FT_ULong i; - - - valid->root = ftvalid; - valid->face = face; - limit = valid->root->limit; - - FT_TRACE3(( "validating `mort' table\n" )); - GXV_INIT; - - GXV_LIMIT_CHECK( 4 + 4 ); - version = FT_NEXT_ULONG( p ); - nChains = FT_NEXT_ULONG( p ); - - if (version != 0x00010000UL) - FT_INVALID_FORMAT; - - for ( i = 0; i < nChains; i++ ) - { - GXV_TRACE(( "validating chain %d/%d\n", i + 1, nChains )); - GXV_32BIT_ALIGNMENT_VALIDATE( p - table ); - gxv_mort_chain_validate( p, limit, valid ); - p += valid->subtable_length; - } - - FT_TRACE4(( "\n" )); - } - - -/* END */ diff --git a/src/gxvalid/gxvmort.h b/src/gxvalid/gxvmort.h deleted file mode 100644 index 1d64e69..0000000 --- a/src/gxvalid/gxvmort.h +++ /dev/null @@ -1,93 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmort.h */ -/* */ -/* TrueTypeGX/AAT common definition for mort table (specification). */ -/* */ -/* Copyright 2004, 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#ifndef __GXVMORT_H__ -#define __GXVMORT_H__ - -#include "gxvalid.h" -#include "gxvcommn.h" - -#include FT_SFNT_NAMES_H - - - typedef struct GXV_mort_featureRec_ - { - FT_UShort featureType; - FT_UShort featureSetting; - FT_ULong enableFlags; - FT_ULong disableFlags; - - } GXV_mort_featureRec, *GXV_mort_feature; - -#define GXV_MORT_FEATURE_OFF {0, 1, 0x00000000UL, 0x00000000UL} - -#define IS_GXV_MORT_FEATURE_OFF( f ) \ - ( (f).featureType == 0 || \ - (f).featureSetting == 1 || \ - (f).enableFlags == 0x00000000UL || \ - (f).disableFlags == 0x00000000UL ) - - - FT_LOCAL( void ) - gxv_mort_featurearray_validate( FT_Bytes table, - FT_Bytes limit, - FT_UInt nFeatureFlags, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_mort_coverage_validate( FT_UShort coverage, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_mort_subtable_type0_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_mort_subtable_type1_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_mort_subtable_type2_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_mort_subtable_type4_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_mort_subtable_type5_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ); - - -#endif /* __GXVMORT_H__ */ - - -/* END */ diff --git a/src/gxvalid/gxvmort0.c b/src/gxvalid/gxvmort0.c deleted file mode 100644 index 0902056..0000000 --- a/src/gxvalid/gxvmort0.c +++ /dev/null @@ -1,137 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmort0.c */ -/* */ -/* TrueTypeGX/AAT mort table validation */ -/* body for type0 (Indic Script Rearrangement) subtable. */ -/* */ -/* Copyright 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvmort.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvmort - - - static const char* GXV_Mort_IndicScript_Msg[] = - { - "no change", - "Ax => xA", - "xD => Dx", - "AxD => DxA", - "ABx => xAB", - "ABx => xBA", - "xCD => CDx", - "xCD => DCx", - "AxCD => CDxA", - "AxCD => DCxA", - "ABxD => DxAB", - "ABxD => DxBA", - "ABxCD => CDxAB", - "ABxCD => CDxBA", - "ABxCD => DCxAB", - "ABxCD => DCxBA", - - }; - - - static void - gxv_mort_subtable_type0_entry_validate( - FT_Byte state, - FT_UShort flags, - GXV_StateTable_GlyphOffsetDesc glyphOffset, - FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_UShort markFirst; - FT_UShort dontAdvance; - FT_UShort markLast; - FT_UShort reserved; - FT_UShort verb = 0; - - FT_UNUSED( state ); - FT_UNUSED( table ); - FT_UNUSED( limit ); - - FT_UNUSED( GXV_Mort_IndicScript_Msg[verb] ); /* for the non-debugging */ - FT_UNUSED( glyphOffset ); /* case */ - - - markFirst = (FT_UShort)( ( flags >> 15 ) & 1 ); - dontAdvance = (FT_UShort)( ( flags >> 14 ) & 1 ); - markLast = (FT_UShort)( ( flags >> 13 ) & 1 ); - - reserved = (FT_UShort)( flags & 0x1FF0 ); - verb = (FT_UShort)( flags & 0x000F ); - - GXV_TRACE(( " IndicScript MorphRule for glyphOffset 0x%04x", - glyphOffset.u )); - GXV_TRACE(( " markFirst=%01d", markFirst )); - GXV_TRACE(( " dontAdvance=%01d", dontAdvance )); - GXV_TRACE(( " markLast=%01d", markLast )); - GXV_TRACE(( " %02d", verb )); - GXV_TRACE(( " %s\n", GXV_Mort_IndicScript_Msg[verb] )); - - if ( 0 < reserved ) - { - GXV_TRACE(( " non-zero bits found in reserved range\n" )); - FT_INVALID_DATA; - } - else - GXV_TRACE(( "\n" )); - } - - - FT_LOCAL_DEF( void ) - gxv_mort_subtable_type0_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - - GXV_NAME_ENTER( - "mort chain subtable type0 (Indic-Script Rearrangement)" ); - - GXV_LIMIT_CHECK( GXV_STATETABLE_HEADER_SIZE ); - - valid->statetable.optdata = NULL; - valid->statetable.optdata_load_func = NULL; - valid->statetable.subtable_setup_func = NULL; - valid->statetable.entry_glyphoffset_fmt = GXV_GLYPHOFFSET_NONE; - valid->statetable.entry_validate_func = - gxv_mort_subtable_type0_entry_validate; - - gxv_StateTable_validate( p, limit, valid ); - - GXV_EXIT; - } - - -/* END */ diff --git a/src/gxvalid/gxvmort1.c b/src/gxvalid/gxvmort1.c deleted file mode 100644 index 0575b12..0000000 --- a/src/gxvalid/gxvmort1.c +++ /dev/null @@ -1,258 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmort1.c */ -/* */ -/* TrueTypeGX/AAT mort table validation */ -/* body for type1 (Contextual Substitution) subtable. */ -/* */ -/* Copyright 2005, 2007 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvmort.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvmort - - - typedef struct GXV_mort_subtable_type1_StateOptRec_ - { - FT_UShort substitutionTable; - FT_UShort substitutionTable_length; - - } GXV_mort_subtable_type1_StateOptRec, - *GXV_mort_subtable_type1_StateOptRecData; - -#define GXV_MORT_SUBTABLE_TYPE1_HEADER_SIZE \ - ( GXV_STATETABLE_HEADER_SIZE + 2 ) - - - static void - gxv_mort_subtable_type1_substitutionTable_load( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - GXV_mort_subtable_type1_StateOptRecData optdata = - (GXV_mort_subtable_type1_StateOptRecData)valid->statetable.optdata; - - - GXV_LIMIT_CHECK( 2 ); - optdata->substitutionTable = FT_NEXT_USHORT( p ); - } - - - static void - gxv_mort_subtable_type1_subtable_setup( FT_UShort table_size, - FT_UShort classTable, - FT_UShort stateArray, - FT_UShort entryTable, - FT_UShort* classTable_length_p, - FT_UShort* stateArray_length_p, - FT_UShort* entryTable_length_p, - GXV_Validator valid ) - { - FT_UShort o[4]; - FT_UShort *l[4]; - FT_UShort buff[5]; - - GXV_mort_subtable_type1_StateOptRecData optdata = - (GXV_mort_subtable_type1_StateOptRecData)valid->statetable.optdata; - - - o[0] = classTable; - o[1] = stateArray; - o[2] = entryTable; - o[3] = optdata->substitutionTable; - l[0] = classTable_length_p; - l[1] = stateArray_length_p; - l[2] = entryTable_length_p; - l[3] = &( optdata->substitutionTable_length ); - - gxv_set_length_by_ushort_offset( o, l, buff, 4, table_size, valid ); - } - - - static void - gxv_mort_subtable_type1_offset_to_subst_validate( - FT_Short wordOffset, - const FT_String* tag, - FT_Byte state, - GXV_Validator valid ) - { - FT_UShort substTable; - FT_UShort substTable_limit; - FT_UShort min_gid; - FT_UShort max_gid; - - FT_UNUSED( tag ); - FT_UNUSED( state ); - - - substTable = - ((GXV_mort_subtable_type1_StateOptRec *) - (valid->statetable.optdata))->substitutionTable; - substTable_limit = - (FT_UShort)( substTable + - ((GXV_mort_subtable_type1_StateOptRec *) - (valid->statetable.optdata))->substitutionTable_length ); - - min_gid = (FT_UShort)( ( substTable - wordOffset * 2 ) / 2 ); - max_gid = (FT_UShort)( ( substTable_limit - wordOffset * 2 ) / 2 ); - max_gid = (FT_UShort)( FT_MAX( max_gid, valid->face->num_glyphs ) ); - - /* XXX: check range? */ - - /* TODO: min_gid & max_gid comparison with ClassTable contents */ - } - - - static void - gxv_mort_subtable_type1_entry_validate( - FT_Byte state, - FT_UShort flags, - GXV_StateTable_GlyphOffsetDesc glyphOffset, - FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_UShort setMark; - FT_UShort dontAdvance; - FT_UShort reserved; - FT_Short markOffset; - FT_Short currentOffset; - - FT_UNUSED( table ); - FT_UNUSED( limit ); - - - setMark = (FT_UShort)( flags >> 15 ); - dontAdvance = (FT_UShort)( ( flags >> 14 ) & 1 ); - reserved = (FT_Short)( flags & 0x3FFF ); - - markOffset = (FT_Short)( glyphOffset.ul >> 16 ); - currentOffset = (FT_Short)( glyphOffset.ul ); - - if ( 0 < reserved ) - { - GXV_TRACE(( " non-zero bits found in reserved range\n" )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_DATA; - } - - gxv_mort_subtable_type1_offset_to_subst_validate( markOffset, - "markOffset", - state, - valid ); - - gxv_mort_subtable_type1_offset_to_subst_validate( currentOffset, - "currentOffset", - state, - valid ); - } - - - static void - gxv_mort_subtable_type1_substTable_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UShort num_gids = (FT_UShort)( - ((GXV_mort_subtable_type1_StateOptRec *) - (valid->statetable.optdata))->substitutionTable_length / 2 ); - FT_UShort i; - - - GXV_NAME_ENTER( "validating contents of substitutionTable" ); - for ( i = 0; i < num_gids ; i ++ ) - { - FT_UShort dst_gid; - - - GXV_LIMIT_CHECK( 2 ); - dst_gid = FT_NEXT_USHORT( p ); - - if ( dst_gid >= 0xFFFFU ) - continue; - - if ( dst_gid > valid->face->num_glyphs ) - { - GXV_TRACE(( "substTable include toolarge gid[%d]=%d >" - " max defined gid #%d\n", - i, dst_gid, valid->face->num_glyphs )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_GLYPH_ID; - } - } - - GXV_EXIT; - } - - - /* - * subtable for Contextual glyph substitution is a modified StateTable. - * In addition to classTable, stateArray, and entryTable, the field - * `substitutionTable' is added. - */ - FT_LOCAL_DEF( void ) - gxv_mort_subtable_type1_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - GXV_mort_subtable_type1_StateOptRec st_rec; - - - GXV_NAME_ENTER( "mort chain subtable type1 (Contextual Glyph Subst)" ); - - GXV_LIMIT_CHECK( GXV_MORT_SUBTABLE_TYPE1_HEADER_SIZE ); - - valid->statetable.optdata = - &st_rec; - valid->statetable.optdata_load_func = - gxv_mort_subtable_type1_substitutionTable_load; - valid->statetable.subtable_setup_func = - gxv_mort_subtable_type1_subtable_setup; - valid->statetable.entry_glyphoffset_fmt = - GXV_GLYPHOFFSET_ULONG; - valid->statetable.entry_validate_func = - - gxv_mort_subtable_type1_entry_validate; - gxv_StateTable_validate( p, limit, valid ); - - gxv_mort_subtable_type1_substTable_validate( - table + st_rec.substitutionTable, - table + st_rec.substitutionTable + st_rec.substitutionTable_length, - valid ); - - GXV_EXIT; - } - - -/* END */ diff --git a/src/gxvalid/gxvmort2.c b/src/gxvalid/gxvmort2.c deleted file mode 100644 index f19d15d..0000000 --- a/src/gxvalid/gxvmort2.c +++ /dev/null @@ -1,282 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmort2.c */ -/* */ -/* TrueTypeGX/AAT mort table validation */ -/* body for type2 (Ligature Substitution) subtable. */ -/* */ -/* Copyright 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvmort.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvmort - - - typedef struct GXV_mort_subtable_type2_StateOptRec_ - { - FT_UShort ligActionTable; - FT_UShort componentTable; - FT_UShort ligatureTable; - FT_UShort ligActionTable_length; - FT_UShort componentTable_length; - FT_UShort ligatureTable_length; - - } GXV_mort_subtable_type2_StateOptRec, - *GXV_mort_subtable_type2_StateOptRecData; - -#define GXV_MORT_SUBTABLE_TYPE2_HEADER_SIZE \ - ( GXV_STATETABLE_HEADER_SIZE + 2 + 2 + 2 ) - - - static void - gxv_mort_subtable_type2_opttable_load( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - GXV_mort_subtable_type2_StateOptRecData optdata = - (GXV_mort_subtable_type2_StateOptRecData)valid->statetable.optdata; - - - GXV_LIMIT_CHECK( 2 + 2 + 2 ); - optdata->ligActionTable = FT_NEXT_USHORT( p ); - optdata->componentTable = FT_NEXT_USHORT( p ); - optdata->ligatureTable = FT_NEXT_USHORT( p ); - - GXV_TRACE(( "offset to ligActionTable=0x%04x\n", - optdata->ligActionTable )); - GXV_TRACE(( "offset to componentTable=0x%04x\n", - optdata->componentTable )); - GXV_TRACE(( "offset to ligatureTable=0x%04x\n", - optdata->ligatureTable )); - } - - - static void - gxv_mort_subtable_type2_subtable_setup( FT_UShort table_size, - FT_UShort classTable, - FT_UShort stateArray, - FT_UShort entryTable, - FT_UShort *classTable_length_p, - FT_UShort *stateArray_length_p, - FT_UShort *entryTable_length_p, - GXV_Validator valid ) - { - FT_UShort o[6]; - FT_UShort *l[6]; - FT_UShort buff[7]; - - GXV_mort_subtable_type2_StateOptRecData optdata = - (GXV_mort_subtable_type2_StateOptRecData)valid->statetable.optdata; - - - GXV_NAME_ENTER( "subtable boundaries setup" ); - - o[0] = classTable; - o[1] = stateArray; - o[2] = entryTable; - o[3] = optdata->ligActionTable; - o[4] = optdata->componentTable; - o[5] = optdata->ligatureTable; - l[0] = classTable_length_p; - l[1] = stateArray_length_p; - l[2] = entryTable_length_p; - l[3] = &(optdata->ligActionTable_length); - l[4] = &(optdata->componentTable_length); - l[5] = &(optdata->ligatureTable_length); - - gxv_set_length_by_ushort_offset( o, l, buff, 6, table_size, valid ); - - GXV_TRACE(( "classTable: offset=0x%04x length=0x%04x\n", - classTable, *classTable_length_p )); - GXV_TRACE(( "stateArray: offset=0x%04x length=0x%04x\n", - stateArray, *stateArray_length_p )); - GXV_TRACE(( "entryTable: offset=0x%04x length=0x%04x\n", - entryTable, *entryTable_length_p )); - GXV_TRACE(( "ligActionTable: offset=0x%04x length=0x%04x\n", - optdata->ligActionTable, - optdata->ligActionTable_length )); - GXV_TRACE(( "componentTable: offset=0x%04x length=0x%04x\n", - optdata->componentTable, - optdata->componentTable_length )); - GXV_TRACE(( "ligatureTable: offset=0x%04x length=0x%04x\n", - optdata->ligatureTable, - optdata->ligatureTable_length )); - - GXV_EXIT; - } - - - static void - gxv_mort_subtable_type2_ligActionOffset_validate( - FT_Bytes table, - FT_UShort ligActionOffset, - GXV_Validator valid ) - { - /* access ligActionTable */ - GXV_mort_subtable_type2_StateOptRecData optdata = - (GXV_mort_subtable_type2_StateOptRecData)valid->statetable.optdata; - - FT_Bytes lat_base = table + optdata->ligActionTable; - FT_Bytes p = table + ligActionOffset; - FT_Bytes lat_limit = lat_base + optdata->ligActionTable; - - - GXV_32BIT_ALIGNMENT_VALIDATE( ligActionOffset ); - if ( p < lat_base ) - { - GXV_TRACE(( "too short offset 0x%04x: p < lat_base (%d byte rewind)\n", - ligActionOffset, lat_base - p )); - - /* FontValidator, ftxvalidator, ftxdumperfuser warn but continue */ - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_OFFSET; - } - else if ( lat_limit < p ) - { - GXV_TRACE(( "too large offset 0x%04x: lat_limit < p (%d byte overrun)\n", - ligActionOffset, p - lat_limit )); - - /* FontValidator, ftxvalidator, ftxdumperfuser warn but continue */ - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_OFFSET; - } - else - { - /* validate entry in ligActionTable */ - FT_ULong lig_action; - FT_UShort last; - FT_UShort store; - FT_ULong offset; - - - lig_action = FT_NEXT_ULONG( p ); - last = (FT_UShort)( ( lig_action >> 31 ) & 1 ); - store = (FT_UShort)( ( lig_action >> 30 ) & 1 ); - - offset = lig_action & 0x3FFFFFFFUL; - } - } - - - static void - gxv_mort_subtable_type2_entry_validate( - FT_Byte state, - FT_UShort flags, - GXV_StateTable_GlyphOffsetDesc glyphOffset, - FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_UShort setComponent; - FT_UShort dontAdvance; - FT_UShort offset; - - FT_UNUSED( state ); - FT_UNUSED( glyphOffset ); - FT_UNUSED( limit ); - - - setComponent = (FT_UShort)( ( flags >> 15 ) & 1 ); - dontAdvance = (FT_UShort)( ( flags >> 14 ) & 1 ); - - offset = (FT_UShort)( flags & 0x3FFFU ); - - if ( 0 < offset ) - gxv_mort_subtable_type2_ligActionOffset_validate( table, offset, - valid ); - } - - - static void - gxv_mort_subtable_type2_ligatureTable_validate( FT_Bytes table, - GXV_Validator valid ) - { - GXV_mort_subtable_type2_StateOptRecData optdata = - (GXV_mort_subtable_type2_StateOptRecData)valid->statetable.optdata; - - FT_Bytes p = table + optdata->ligatureTable; - FT_Bytes limit = table + optdata->ligatureTable - + optdata->ligatureTable_length; - - - GXV_NAME_ENTER( "mort chain subtable type2 - substitutionTable" ); - if ( 0 != optdata->ligatureTable ) - { - /* Apple does not give specification of ligatureTable format */ - while ( p < limit ) - { - FT_UShort lig_gid; - - - GXV_LIMIT_CHECK( 2 ); - lig_gid = FT_NEXT_USHORT( p ); - } - } - GXV_EXIT; - } - - - FT_LOCAL_DEF( void ) - gxv_mort_subtable_type2_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - GXV_mort_subtable_type2_StateOptRec lig_rec; - - - GXV_NAME_ENTER( "mort chain subtable type2 (Ligature Substitution)" ); - - GXV_LIMIT_CHECK( GXV_MORT_SUBTABLE_TYPE2_HEADER_SIZE ); - - valid->statetable.optdata = - &lig_rec; - valid->statetable.optdata_load_func = - gxv_mort_subtable_type2_opttable_load; - valid->statetable.subtable_setup_func = - gxv_mort_subtable_type2_subtable_setup; - valid->statetable.entry_glyphoffset_fmt = - GXV_GLYPHOFFSET_NONE; - valid->statetable.entry_validate_func = - gxv_mort_subtable_type2_entry_validate; - - gxv_StateTable_validate( p, limit, valid ); - - p += valid->subtable_length; - gxv_mort_subtable_type2_ligatureTable_validate( table, valid ); - - valid->subtable_length = p - table; - - GXV_EXIT; - } - - -/* END */ diff --git a/src/gxvalid/gxvmort4.c b/src/gxvalid/gxvmort4.c deleted file mode 100644 index a04bc1e..0000000 --- a/src/gxvalid/gxvmort4.c +++ /dev/null @@ -1,125 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmort4.c */ -/* */ -/* TrueTypeGX/AAT mort table validation */ -/* body for type4 (Non-Contextual Glyph Substitution) subtable. */ -/* */ -/* Copyright 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvmort.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvmort - - - static void - gxv_mort_subtable_type4_lookupval_validate( FT_UShort glyph, - GXV_LookupValueDesc value, - GXV_Validator valid ) - { - FT_UNUSED( glyph ); - - gxv_glyphid_validate( value.u, valid ); - } - - /* - +===============+ --------+ - | lookup header | | - +===============+ | - | BinSrchHeader | | - +===============+ | - | lastGlyph[0] | | - +---------------+ | - | firstGlyph[0] | | head of lookup table - +---------------+ | + - | offset[0] | -> | offset [byte] - +===============+ | + - | lastGlyph[1] | | (glyphID - firstGlyph) * 2 [byte] - +---------------+ | - | firstGlyph[1] | | - +---------------+ | - | offset[1] | | - +===============+ | - | - .... | - | - 16bit value array | - +===============+ | - | value | <-------+ - .... - */ - - static GXV_LookupValueDesc - gxv_mort_subtable_type4_lookupfmt4_transit( - FT_UShort relative_gindex, - GXV_LookupValueDesc base_value, - FT_Bytes lookuptbl_limit, - GXV_Validator valid ) - { - FT_Bytes p; - FT_Bytes limit; - FT_UShort offset; - GXV_LookupValueDesc value; - - /* XXX: check range? */ - offset = (FT_UShort)( base_value.u + - relative_gindex * sizeof ( FT_UShort ) ); - - p = valid->lookuptbl_head + offset; - limit = lookuptbl_limit; - - GXV_LIMIT_CHECK( 2 ); - value.u = FT_NEXT_USHORT( p ); - - return value; - } - - - FT_LOCAL_DEF( void ) - gxv_mort_subtable_type4_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - - GXV_NAME_ENTER( "mort chain subtable type4 " - "(Non-Contextual Glyph Substitution)" ); - - valid->lookupval_sign = GXV_LOOKUPVALUE_UNSIGNED; - valid->lookupval_func = gxv_mort_subtable_type4_lookupval_validate; - valid->lookupfmt4_trans = gxv_mort_subtable_type4_lookupfmt4_transit; - - gxv_LookupTable_validate( p, limit, valid ); - - GXV_EXIT; - } - - -/* END */ diff --git a/src/gxvalid/gxvmort5.c b/src/gxvalid/gxvmort5.c deleted file mode 100644 index a7cabc3..0000000 --- a/src/gxvalid/gxvmort5.c +++ /dev/null @@ -1,226 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmort5.c */ -/* */ -/* TrueTypeGX/AAT mort table validation */ -/* body for type5 (Contextual Glyph Insertion) subtable. */ -/* */ -/* Copyright 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvmort.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvmort - - - /* - * mort subtable type5 (Contextual Glyph Insertion) - * has the format of StateTable with insertion-glyph-list, - * but without name. The offset is given by glyphOffset in - * entryTable. There is no table location declaration - * like xxxTable. - */ - - typedef struct GXV_mort_subtable_type5_StateOptRec_ - { - FT_UShort classTable; - FT_UShort stateArray; - FT_UShort entryTable; - -#define GXV_MORT_SUBTABLE_TYPE5_HEADER_SIZE GXV_STATETABLE_HEADER_SIZE - - FT_UShort* classTable_length_p; - FT_UShort* stateArray_length_p; - FT_UShort* entryTable_length_p; - - } GXV_mort_subtable_type5_StateOptRec, - *GXV_mort_subtable_type5_StateOptRecData; - - - FT_LOCAL_DEF( void ) - gxv_mort_subtable_type5_subtable_setup( FT_UShort table_size, - FT_UShort classTable, - FT_UShort stateArray, - FT_UShort entryTable, - FT_UShort* classTable_length_p, - FT_UShort* stateArray_length_p, - FT_UShort* entryTable_length_p, - GXV_Validator valid ) - { - GXV_mort_subtable_type5_StateOptRecData optdata = - (GXV_mort_subtable_type5_StateOptRecData)valid->statetable.optdata; - - - gxv_StateTable_subtable_setup( table_size, - classTable, - stateArray, - entryTable, - classTable_length_p, - stateArray_length_p, - entryTable_length_p, - valid ); - - optdata->classTable = classTable; - optdata->stateArray = stateArray; - optdata->entryTable = entryTable; - - optdata->classTable_length_p = classTable_length_p; - optdata->stateArray_length_p = stateArray_length_p; - optdata->entryTable_length_p = entryTable_length_p; - } - - - static void - gxv_mort_subtable_type5_InsertList_validate( FT_UShort offset, - FT_UShort count, - FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - /* - * We don't know the range of insertion-glyph-list. - * Set range by whole of state table. - */ - FT_Bytes p = table + offset; - - GXV_mort_subtable_type5_StateOptRecData optdata = - (GXV_mort_subtable_type5_StateOptRecData)valid->statetable.optdata; - - if ( optdata->classTable < offset && - offset < optdata->classTable + *(optdata->classTable_length_p) ) - GXV_TRACE(( " offset runs into ClassTable" )); - if ( optdata->stateArray < offset && - offset < optdata->stateArray + *(optdata->stateArray_length_p) ) - GXV_TRACE(( " offset runs into StateArray" )); - if ( optdata->entryTable < offset && - offset < optdata->entryTable + *(optdata->entryTable_length_p) ) - GXV_TRACE(( " offset runs into EntryTable" )); - - while ( p < table + offset + ( count * 2 ) ) - { - FT_UShort insert_glyphID; - - - GXV_LIMIT_CHECK( 2 ); - insert_glyphID = FT_NEXT_USHORT( p ); - GXV_TRACE(( " 0x%04x", insert_glyphID )); - } - - GXV_TRACE(( "\n" )); - } - - - static void - gxv_mort_subtable_type5_entry_validate( - FT_Byte state, - FT_UShort flags, - GXV_StateTable_GlyphOffsetDesc glyphOffset, - FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bool setMark; - FT_Bool dontAdvance; - FT_Bool currentIsKashidaLike; - FT_Bool markedIsKashidaLike; - FT_Bool currentInsertBefore; - FT_Bool markedInsertBefore; - FT_Byte currentInsertCount; - FT_Byte markedInsertCount; - FT_UShort currentInsertList; - FT_UShort markedInsertList; - - FT_UNUSED( state ); - - - setMark = FT_BOOL( ( flags >> 15 ) & 1 ); - dontAdvance = FT_BOOL( ( flags >> 14 ) & 1 ); - currentIsKashidaLike = FT_BOOL( ( flags >> 13 ) & 1 ); - markedIsKashidaLike = FT_BOOL( ( flags >> 12 ) & 1 ); - currentInsertBefore = FT_BOOL( ( flags >> 11 ) & 1 ); - markedInsertBefore = FT_BOOL( ( flags >> 10 ) & 1 ); - - currentInsertCount = (FT_Byte)( ( flags >> 5 ) & 0x1F ); - markedInsertCount = (FT_Byte)( flags & 0x001F ); - - currentInsertList = (FT_UShort)( glyphOffset.ul >> 16 ); - markedInsertList = (FT_UShort)( glyphOffset.ul ); - - if ( 0 != currentInsertList && 0 != currentInsertCount ) - { - gxv_mort_subtable_type5_InsertList_validate( currentInsertList, - currentInsertCount, - table, - limit, - valid ); - } - - if ( 0 != markedInsertList && 0 != markedInsertCount ) - { - gxv_mort_subtable_type5_InsertList_validate( markedInsertList, - markedInsertCount, - table, - limit, - valid ); - } - } - - - FT_LOCAL_DEF( void ) - gxv_mort_subtable_type5_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - GXV_mort_subtable_type5_StateOptRec et_rec; - GXV_mort_subtable_type5_StateOptRecData et = &et_rec; - - - GXV_NAME_ENTER( "mort chain subtable type5 (Glyph Insertion)" ); - - GXV_LIMIT_CHECK( GXV_MORT_SUBTABLE_TYPE5_HEADER_SIZE ); - - valid->statetable.optdata = - et; - valid->statetable.optdata_load_func = - NULL; - valid->statetable.subtable_setup_func = - gxv_mort_subtable_type5_subtable_setup; - valid->statetable.entry_glyphoffset_fmt = - GXV_GLYPHOFFSET_ULONG; - valid->statetable.entry_validate_func = - gxv_mort_subtable_type5_entry_validate; - - gxv_StateTable_validate( p, limit, valid ); - - GXV_EXIT; - } - - -/* END */ diff --git a/src/gxvalid/gxvmorx.c b/src/gxvalid/gxvmorx.c deleted file mode 100644 index 849d5e9..0000000 --- a/src/gxvalid/gxvmorx.c +++ /dev/null @@ -1,183 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmorx.c */ -/* */ -/* TrueTypeGX/AAT morx table validation (body). */ -/* */ -/* Copyright 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvmorx.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvmorx - - - static void - gxv_morx_subtables_validate( FT_Bytes table, - FT_Bytes limit, - FT_UShort nSubtables, - GXV_Validator valid ) - { - FT_Bytes p = table; - - GXV_Validate_Func fmt_funcs_table[] = - { - gxv_morx_subtable_type0_validate, /* 0 */ - gxv_morx_subtable_type1_validate, /* 1 */ - gxv_morx_subtable_type2_validate, /* 2 */ - NULL, /* 3 */ - gxv_morx_subtable_type4_validate, /* 4 */ - gxv_morx_subtable_type5_validate, /* 5 */ - - }; - - GXV_Validate_Func func; - - FT_UShort i; - - - GXV_NAME_ENTER( "subtables in a chain" ); - - for ( i = 0; i < nSubtables; i++ ) - { - FT_ULong length; - FT_ULong coverage; - FT_ULong subFeatureFlags; - FT_UInt type; - FT_UInt rest; - - - GXV_LIMIT_CHECK( 4 + 4 + 4 ); - length = FT_NEXT_ULONG( p ); - coverage = FT_NEXT_ULONG( p ); - subFeatureFlags = FT_NEXT_ULONG( p ); - - GXV_TRACE(( "validating chain subtable %d/%d (%d bytes)\n", - i + 1, nSubtables, length )); - - type = coverage & 0x0007; - rest = length - ( 4 + 4 + 4 ); - GXV_LIMIT_CHECK( rest ); - - /* morx coverage consists of mort_coverage & 16bit padding */ - gxv_mort_coverage_validate( (FT_UShort)( ( coverage >> 16 ) | coverage ), - valid ); - if ( type > 5 ) - FT_INVALID_FORMAT; - - func = fmt_funcs_table[type]; - if ( func == NULL ) - GXV_TRACE(( "morx type %d is reserved\n", type )); - - func( p, p + rest, valid ); - - p += rest; - } - - valid->subtable_length = p - table; - - GXV_EXIT; - } - - - static void - gxv_morx_chain_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_ULong defaultFlags; - FT_ULong chainLength; - FT_ULong nFeatureFlags; - FT_ULong nSubtables; - - - GXV_NAME_ENTER( "morx chain header" ); - - GXV_LIMIT_CHECK( 4 + 4 + 4 + 4 ); - defaultFlags = FT_NEXT_ULONG( p ); - chainLength = FT_NEXT_ULONG( p ); - nFeatureFlags = FT_NEXT_ULONG( p ); - nSubtables = FT_NEXT_ULONG( p ); - - /* feature-array of morx is same with that of mort */ - gxv_mort_featurearray_validate( p, limit, nFeatureFlags, valid ); - p += valid->subtable_length; - - if ( nSubtables >= 0x10000 ) - FT_INVALID_DATA; - - gxv_morx_subtables_validate( p, table + chainLength, - (FT_UShort)nSubtables, valid ); - - valid->subtable_length = chainLength; - - GXV_EXIT; - } - - - FT_LOCAL_DEF( void ) - gxv_morx_validate( FT_Bytes table, - FT_Face face, - FT_Validator ftvalid ) - { - GXV_ValidatorRec validrec; - GXV_Validator valid = &validrec; - FT_Bytes p = table; - FT_Bytes limit = 0; - FT_ULong version; - FT_ULong nChains; - FT_ULong i; - - - valid->root = ftvalid; - valid->face = face; - - FT_TRACE3(( "validating `morx' table\n" )); - GXV_INIT; - - GXV_LIMIT_CHECK( 4 + 4 ); - version = FT_NEXT_ULONG( p ); - nChains = FT_NEXT_ULONG( p ); - - if ( version != 0x00020000UL ) - FT_INVALID_FORMAT; - - for ( i = 0; i < nChains; i++ ) - { - GXV_TRACE(( "validating chain %d/%d\n", i + 1, nChains )); - GXV_32BIT_ALIGNMENT_VALIDATE( p - table ); - gxv_morx_chain_validate( p, limit, valid ); - p += valid->subtable_length; - } - - FT_TRACE4(( "\n" )); - } - - -/* END */ diff --git a/src/gxvalid/gxvmorx.h b/src/gxvalid/gxvmorx.h deleted file mode 100644 index 28c1a44..0000000 --- a/src/gxvalid/gxvmorx.h +++ /dev/null @@ -1,67 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmorx.h */ -/* */ -/* TrueTypeGX/AAT common definition for morx table (specification). */ -/* */ -/* Copyright 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#ifndef __GXVMORX_H__ -#define __GXVMORX_H__ - - -#include "gxvalid.h" -#include "gxvcommn.h" -#include "gxvmort.h" - -#include FT_SFNT_NAMES_H - - - FT_LOCAL( void ) - gxv_morx_subtable_type0_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_morx_subtable_type1_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_morx_subtable_type2_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_morx_subtable_type4_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ); - - FT_LOCAL( void ) - gxv_morx_subtable_type5_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ); - - -#endif /* __GXVMORX_H__ */ - - -/* END */ diff --git a/src/gxvalid/gxvmorx0.c b/src/gxvalid/gxvmorx0.c deleted file mode 100644 index ca92b6c..0000000 --- a/src/gxvalid/gxvmorx0.c +++ /dev/null @@ -1,103 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmorx0.c */ -/* */ -/* TrueTypeGX/AAT morx table validation */ -/* body for type0 (Indic Script Rearrangement) subtable. */ -/* */ -/* Copyright 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvmorx.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvmorx - - - static void - gxv_morx_subtable_type0_entry_validate( - FT_UShort state, - FT_UShort flags, - GXV_XStateTable_GlyphOffsetDesc glyphOffset, - FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_UShort markFirst; - FT_UShort dontAdvance; - FT_UShort markLast; - FT_UShort reserved; - FT_UShort verb; - - FT_UNUSED( state ); - FT_UNUSED( glyphOffset ); - FT_UNUSED( table ); - FT_UNUSED( limit ); - - - markFirst = (FT_UShort)( ( flags >> 15 ) & 1 ); - dontAdvance = (FT_UShort)( ( flags >> 14 ) & 1 ); - markLast = (FT_UShort)( ( flags >> 13 ) & 1 ); - - reserved = (FT_UShort)( flags & 0x1FF0 ); - verb = (FT_UShort)( flags & 0x000F ); - - if ( 0 < reserved ) - { - GXV_TRACE(( " non-zero bits found in reserved range\n" )); - FT_INVALID_DATA; - } - } - - - FT_LOCAL_DEF( void ) - gxv_morx_subtable_type0_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - - GXV_NAME_ENTER( - "morx chain subtable type0 (Indic-Script Rearrangement)" ); - - GXV_LIMIT_CHECK( GXV_STATETABLE_HEADER_SIZE ); - - valid->xstatetable.optdata = NULL; - valid->xstatetable.optdata_load_func = NULL; - valid->xstatetable.subtable_setup_func = NULL; - valid->xstatetable.entry_glyphoffset_fmt = GXV_GLYPHOFFSET_NONE; - valid->xstatetable.entry_validate_func = - gxv_morx_subtable_type0_entry_validate; - - gxv_XStateTable_validate( p, limit, valid ); - - GXV_EXIT; - } - - -/* END */ diff --git a/src/gxvalid/gxvmorx1.c b/src/gxvalid/gxvmorx1.c deleted file mode 100644 index 331d4cc..0000000 --- a/src/gxvalid/gxvmorx1.c +++ /dev/null @@ -1,274 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmorx1.c */ -/* */ -/* TrueTypeGX/AAT morx table validation */ -/* body for type1 (Contextual Substitution) subtable. */ -/* */ -/* Copyright 2005, 2007 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvmorx.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvmorx - - - typedef struct GXV_morx_subtable_type1_StateOptRec_ - { - FT_ULong substitutionTable; - FT_ULong substitutionTable_length; - FT_UShort substitutionTable_num_lookupTables; - - } GXV_morx_subtable_type1_StateOptRec, - *GXV_morx_subtable_type1_StateOptRecData; - - -#define GXV_MORX_SUBTABLE_TYPE1_HEADER_SIZE \ - ( GXV_STATETABLE_HEADER_SIZE + 2 ) - - - static void - gxv_morx_subtable_type1_substitutionTable_load( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - GXV_morx_subtable_type1_StateOptRecData optdata = - (GXV_morx_subtable_type1_StateOptRecData)valid->xstatetable.optdata; - - - GXV_LIMIT_CHECK( 2 ); - optdata->substitutionTable = FT_NEXT_USHORT( p ); - } - - - static void - gxv_morx_subtable_type1_subtable_setup( FT_ULong table_size, - FT_ULong classTable, - FT_ULong stateArray, - FT_ULong entryTable, - FT_ULong* classTable_length_p, - FT_ULong* stateArray_length_p, - FT_ULong* entryTable_length_p, - GXV_Validator valid ) - { - FT_ULong o[4]; - FT_ULong *l[4]; - FT_ULong buff[5]; - - GXV_morx_subtable_type1_StateOptRecData optdata = - (GXV_morx_subtable_type1_StateOptRecData)valid->xstatetable.optdata; - - - o[0] = classTable; - o[1] = stateArray; - o[2] = entryTable; - o[3] = optdata->substitutionTable; - l[0] = classTable_length_p; - l[1] = stateArray_length_p; - l[2] = entryTable_length_p; - l[3] = &(optdata->substitutionTable_length); - - gxv_set_length_by_ulong_offset( o, l, buff, 4, table_size, valid ); - } - - - static void - gxv_morx_subtable_type1_entry_validate( - FT_UShort state, - FT_UShort flags, - GXV_StateTable_GlyphOffsetDesc glyphOffset, - FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_UShort setMark; - FT_UShort dontAdvance; - FT_UShort reserved; - FT_Short markIndex; - FT_Short currentIndex; - - GXV_morx_subtable_type1_StateOptRecData optdata = - (GXV_morx_subtable_type1_StateOptRecData)valid->xstatetable.optdata; - - FT_UNUSED( state ); - FT_UNUSED( table ); - FT_UNUSED( limit ); - - - setMark = (FT_UShort)( ( flags >> 15 ) & 1 ); - dontAdvance = (FT_UShort)( ( flags >> 14 ) & 1 ); - - reserved = (FT_UShort)( flags & 0x3FFF ); - - markIndex = (FT_Short)( glyphOffset.ul >> 16 ); - currentIndex = (FT_Short)( glyphOffset.ul ); - - GXV_TRACE(( " setMark=%01d dontAdvance=%01d\n", - setMark, dontAdvance )); - - if ( 0 < reserved ) - { - GXV_TRACE(( " non-zero bits found in reserved range\n" )); - if ( valid->root->level >= FT_VALIDATE_PARANOID ) - FT_INVALID_DATA; - } - - GXV_TRACE(( "markIndex = %d, currentIndex = %d\n", - markIndex, currentIndex )); - - if ( optdata->substitutionTable_num_lookupTables < markIndex + 1 ) - optdata->substitutionTable_num_lookupTables = - (FT_Short)( markIndex + 1 ); - - if ( optdata->substitutionTable_num_lookupTables < currentIndex + 1 ) - optdata->substitutionTable_num_lookupTables = - (FT_Short)( currentIndex + 1 ); - } - - - static void - gxv_morx_subtable_type1_LookupValue_validate( FT_UShort glyph, - GXV_LookupValueDesc value, - GXV_Validator valid ) - { - FT_UNUSED( glyph ); /* for the non-debugging case */ - - GXV_TRACE(( "morx subtable type1 subst.: %d -> %d\n", glyph, value.u )); - - if ( value.u > valid->face->num_glyphs ) - FT_INVALID_GLYPH_ID; - } - - - static GXV_LookupValueDesc - gxv_morx_subtable_type1_LookupFmt4_transit( - FT_UShort relative_gindex, - GXV_LookupValueDesc base_value, - FT_Bytes lookuptbl_limit, - GXV_Validator valid ) - { - FT_Bytes p; - FT_Bytes limit; - FT_UShort offset; - GXV_LookupValueDesc value; - - /* XXX: check range? */ - offset = (FT_UShort)( base_value.u + - relative_gindex * sizeof ( FT_UShort ) ); - - p = valid->lookuptbl_head + offset; - limit = lookuptbl_limit; - - GXV_LIMIT_CHECK ( 2 ); - value.u = FT_NEXT_USHORT( p ); - - return value; - } - - - /* - * TODO: length should be limit? - **/ - static void - gxv_morx_subtable_type1_substitutionTable_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UShort i; - - GXV_morx_subtable_type1_StateOptRecData optdata = - (GXV_morx_subtable_type1_StateOptRecData)valid->xstatetable.optdata; - - - /* TODO: calculate offset/length for each lookupTables */ - valid->lookupval_sign = GXV_LOOKUPVALUE_UNSIGNED; - valid->lookupval_func = gxv_morx_subtable_type1_LookupValue_validate; - valid->lookupfmt4_trans = gxv_morx_subtable_type1_LookupFmt4_transit; - - for ( i = 0; i < optdata->substitutionTable_num_lookupTables; i++ ) - { - FT_ULong offset; - - - GXV_LIMIT_CHECK( 4 ); - offset = FT_NEXT_ULONG( p ); - - gxv_LookupTable_validate( table + offset, limit, valid ); - } - - /* TODO: overlapping of lookupTables in substitutionTable */ - } - - - /* - * subtable for Contextual glyph substitution is a modified StateTable. - * In addition to classTable, stateArray, entryTable, the field - * `substitutionTable' is added. - */ - FT_LOCAL_DEF( void ) - gxv_morx_subtable_type1_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - GXV_morx_subtable_type1_StateOptRec st_rec; - - - GXV_NAME_ENTER( "morx chain subtable type1 (Contextual Glyph Subst)" ); - - GXV_LIMIT_CHECK( GXV_MORX_SUBTABLE_TYPE1_HEADER_SIZE ); - - st_rec.substitutionTable_num_lookupTables = 0; - - valid->xstatetable.optdata = - &st_rec; - valid->xstatetable.optdata_load_func = - gxv_morx_subtable_type1_substitutionTable_load; - valid->xstatetable.subtable_setup_func = - gxv_morx_subtable_type1_subtable_setup; - valid->xstatetable.entry_glyphoffset_fmt = - GXV_GLYPHOFFSET_ULONG; - valid->xstatetable.entry_validate_func = - gxv_morx_subtable_type1_entry_validate; - - gxv_XStateTable_validate( p, limit, valid ); - - gxv_morx_subtable_type1_substitutionTable_validate( - table + st_rec.substitutionTable, - table + st_rec.substitutionTable + st_rec.substitutionTable_length, - valid ); - - GXV_EXIT; - } - - -/* END */ diff --git a/src/gxvalid/gxvmorx2.c b/src/gxvalid/gxvmorx2.c deleted file mode 100644 index 5cad516..0000000 --- a/src/gxvalid/gxvmorx2.c +++ /dev/null @@ -1,285 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmorx2.c */ -/* */ -/* TrueTypeGX/AAT morx table validation */ -/* body for type2 (Ligature Substitution) subtable. */ -/* */ -/* Copyright 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvmorx.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvmorx - - - typedef struct GXV_morx_subtable_type2_StateOptRec_ - { - FT_ULong ligActionTable; - FT_ULong componentTable; - FT_ULong ligatureTable; - FT_ULong ligActionTable_length; - FT_ULong componentTable_length; - FT_ULong ligatureTable_length; - - } GXV_morx_subtable_type2_StateOptRec, - *GXV_morx_subtable_type2_StateOptRecData; - - -#define GXV_MORX_SUBTABLE_TYPE2_HEADER_SIZE \ - ( GXV_XSTATETABLE_HEADER_SIZE + 4 + 4 + 4 ) - - - static void - gxv_morx_subtable_type2_opttable_load( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - GXV_morx_subtable_type2_StateOptRecData optdata = - (GXV_morx_subtable_type2_StateOptRecData)valid->xstatetable.optdata; - - - GXV_LIMIT_CHECK( 4 + 4 + 4 ); - optdata->ligActionTable = FT_NEXT_ULONG( p ); - optdata->componentTable = FT_NEXT_ULONG( p ); - optdata->ligatureTable = FT_NEXT_ULONG( p ); - - GXV_TRACE(( "offset to ligActionTable=0x%08x\n", - optdata->ligActionTable )); - GXV_TRACE(( "offset to componentTable=0x%08x\n", - optdata->componentTable )); - GXV_TRACE(( "offset to ligatureTable=0x%08x\n", - optdata->ligatureTable )); - } - - - static void - gxv_morx_subtable_type2_subtable_setup( FT_ULong table_size, - FT_ULong classTable, - FT_ULong stateArray, - FT_ULong entryTable, - FT_ULong* classTable_length_p, - FT_ULong* stateArray_length_p, - FT_ULong* entryTable_length_p, - GXV_Validator valid ) - { - FT_ULong o[6]; - FT_ULong* l[6]; - FT_ULong buff[7]; - - GXV_morx_subtable_type2_StateOptRecData optdata = - (GXV_morx_subtable_type2_StateOptRecData)valid->xstatetable.optdata; - - - GXV_NAME_ENTER( "subtable boundaries setup" ); - - o[0] = classTable; - o[1] = stateArray; - o[2] = entryTable; - o[3] = optdata->ligActionTable; - o[4] = optdata->componentTable; - o[5] = optdata->ligatureTable; - l[0] = classTable_length_p; - l[1] = stateArray_length_p; - l[2] = entryTable_length_p; - l[3] = &(optdata->ligActionTable_length); - l[4] = &(optdata->componentTable_length); - l[5] = &(optdata->ligatureTable_length); - - gxv_set_length_by_ulong_offset( o, l, buff, 6, table_size, valid ); - - GXV_TRACE(( "classTable: offset=0x%08x length=0x%08x\n", - classTable, *classTable_length_p )); - GXV_TRACE(( "stateArray: offset=0x%08x length=0x%08x\n", - stateArray, *stateArray_length_p )); - GXV_TRACE(( "entryTable: offset=0x%08x length=0x%08x\n", - entryTable, *entryTable_length_p )); - GXV_TRACE(( "ligActionTable: offset=0x%08x length=0x%08x\n", - optdata->ligActionTable, - optdata->ligActionTable_length )); - GXV_TRACE(( "componentTable: offset=0x%08x length=0x%08x\n", - optdata->componentTable, - optdata->componentTable_length )); - GXV_TRACE(( "ligatureTable: offset=0x%08x length=0x%08x\n", - optdata->ligatureTable, - optdata->ligatureTable_length )); - - GXV_EXIT; - } - - -#define GXV_MORX_LIGACTION_ENTRY_SIZE 4 - - - static void - gxv_morx_subtable_type2_ligActionIndex_validate( - FT_Bytes table, - FT_UShort ligActionIndex, - GXV_Validator valid ) - { - /* access ligActionTable */ - GXV_morx_subtable_type2_StateOptRecData optdata = - (GXV_morx_subtable_type2_StateOptRecData)valid->xstatetable.optdata; - - FT_Bytes lat_base = table + optdata->ligActionTable; - FT_Bytes p = lat_base + - ligActionIndex * GXV_MORX_LIGACTION_ENTRY_SIZE; - FT_Bytes lat_limit = lat_base + optdata->ligActionTable; - - - if ( p < lat_base ) - { - GXV_TRACE(( "p < lat_base (%d byte rewind)\n", lat_base - p )); - FT_INVALID_OFFSET; - } - else if ( lat_limit < p ) - { - GXV_TRACE(( "lat_limit < p (%d byte overrun)\n", p - lat_limit )); - FT_INVALID_OFFSET; - } - - { - /* validate entry in ligActionTable */ - FT_ULong lig_action; - FT_UShort last; - FT_UShort store; - FT_ULong offset; - - - lig_action = FT_NEXT_ULONG( p ); - last = (FT_UShort)( ( lig_action >> 31 ) & 1 ); - store = (FT_UShort)( ( lig_action >> 30 ) & 1 ); - - offset = lig_action & 0x3FFFFFFFUL; - } - } - - - static void - gxv_morx_subtable_type2_entry_validate( - FT_UShort state, - FT_UShort flags, - GXV_StateTable_GlyphOffsetDesc glyphOffset, - FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_UShort setComponent; - FT_UShort dontAdvance; - FT_UShort performAction; - FT_UShort reserved; - FT_UShort ligActionIndex; - - FT_UNUSED( state ); - FT_UNUSED( limit ); - - - setComponent = (FT_UShort)( ( flags >> 15 ) & 1 ); - dontAdvance = (FT_UShort)( ( flags >> 14 ) & 1 ); - performAction = (FT_UShort)( ( flags >> 13 ) & 1 ); - - reserved = (FT_UShort)( flags & 0x1FFF ); - ligActionIndex = glyphOffset.u; - - if ( reserved > 0 ) - GXV_TRACE(( " reserved 14bit is non-zero\n" )); - - if ( 0 < ligActionIndex ) - gxv_morx_subtable_type2_ligActionIndex_validate( - table, ligActionIndex, valid ); - } - - - static void - gxv_morx_subtable_type2_ligatureTable_validate( FT_Bytes table, - GXV_Validator valid ) - { - GXV_morx_subtable_type2_StateOptRecData optdata = - (GXV_morx_subtable_type2_StateOptRecData)valid->xstatetable.optdata; - - FT_Bytes p = table + optdata->ligatureTable; - FT_Bytes limit = table + optdata->ligatureTable - + optdata->ligatureTable_length; - - - GXV_NAME_ENTER( "morx chain subtable type2 - substitutionTable" ); - - if ( 0 != optdata->ligatureTable ) - { - /* Apple does not give specification of ligatureTable format */ - while ( p < limit ) - { - FT_UShort lig_gid; - - - GXV_LIMIT_CHECK( 2 ); - lig_gid = FT_NEXT_USHORT( p ); - } - } - - GXV_EXIT; - } - - - FT_LOCAL_DEF( void ) - gxv_morx_subtable_type2_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - GXV_morx_subtable_type2_StateOptRec lig_rec; - - - GXV_NAME_ENTER( "morx chain subtable type2 (Ligature Substitution)" ); - - GXV_LIMIT_CHECK( GXV_MORX_SUBTABLE_TYPE2_HEADER_SIZE ); - - valid->xstatetable.optdata = - &lig_rec; - valid->xstatetable.optdata_load_func = - gxv_morx_subtable_type2_opttable_load; - valid->xstatetable.subtable_setup_func = - gxv_morx_subtable_type2_subtable_setup; - valid->xstatetable.entry_glyphoffset_fmt = - GXV_GLYPHOFFSET_USHORT; - valid->xstatetable.entry_validate_func = - gxv_morx_subtable_type2_entry_validate; - - gxv_XStateTable_validate( p, limit, valid ); - - p += valid->subtable_length; - gxv_morx_subtable_type2_ligatureTable_validate( table, valid ); - - GXV_EXIT; - } - - -/* END */ diff --git a/src/gxvalid/gxvmorx4.c b/src/gxvalid/gxvmorx4.c deleted file mode 100644 index c0d2f78..0000000 --- a/src/gxvalid/gxvmorx4.c +++ /dev/null @@ -1,55 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmorx4.c */ -/* */ -/* TrueTypeGX/AAT morx table validation */ -/* body for "morx" type4 (Non-Contextual Glyph Substitution) subtable. */ -/* */ -/* Copyright 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvmorx.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvmorx - - - FT_LOCAL_DEF( void ) - gxv_morx_subtable_type4_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - GXV_NAME_ENTER( "morx chain subtable type4 " - "(Non-Contextual Glyph Substitution)" ); - - gxv_mort_subtable_type4_validate( table, limit, valid ); - - GXV_EXIT; - } - - -/* END */ diff --git a/src/gxvalid/gxvmorx5.c b/src/gxvalid/gxvmorx5.c deleted file mode 100644 index d911561..0000000 --- a/src/gxvalid/gxvmorx5.c +++ /dev/null @@ -1,217 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvmorx5.c */ -/* */ -/* TrueTypeGX/AAT morx table validation */ -/* body for type5 (Contextual Glyph Insertion) subtable. */ -/* */ -/* Copyright 2005, 2007 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvmorx.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvmorx - - - /* - * `morx' subtable type5 (Contextual Glyph Insertion) - * has format of a StateTable with insertion-glyph-list - * without name. However, the 32bit offset from the head - * of subtable to the i-g-l is given after `entryTable', - * without variable name specification (the existence of - * this offset to the table is different from mort type5). - */ - - - typedef struct GXV_morx_subtable_type5_StateOptRec_ - { - FT_ULong insertionGlyphList; - FT_ULong insertionGlyphList_length; - - } GXV_morx_subtable_type5_StateOptRec, - *GXV_morx_subtable_type5_StateOptRecData; - - -#define GXV_MORX_SUBTABLE_TYPE5_HEADER_SIZE \ - ( GXV_STATETABLE_HEADER_SIZE + 4 ) - - - static void - gxv_morx_subtable_type5_insertionGlyphList_load( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - GXV_morx_subtable_type5_StateOptRecData optdata = - (GXV_morx_subtable_type5_StateOptRecData)valid->xstatetable.optdata; - - - GXV_LIMIT_CHECK( 4 ); - optdata->insertionGlyphList = FT_NEXT_ULONG( p ); - } - - - static void - gxv_morx_subtable_type5_subtable_setup( FT_ULong table_size, - FT_ULong classTable, - FT_ULong stateArray, - FT_ULong entryTable, - FT_ULong* classTable_length_p, - FT_ULong* stateArray_length_p, - FT_ULong* entryTable_length_p, - GXV_Validator valid ) - { - FT_ULong o[4]; - FT_ULong* l[4]; - FT_ULong buff[5]; - - GXV_morx_subtable_type5_StateOptRecData optdata = - (GXV_morx_subtable_type5_StateOptRecData)valid->xstatetable.optdata; - - - o[0] = classTable; - o[1] = stateArray; - o[2] = entryTable; - o[3] = optdata->insertionGlyphList; - l[0] = classTable_length_p; - l[1] = stateArray_length_p; - l[2] = entryTable_length_p; - l[3] = &(optdata->insertionGlyphList_length); - - gxv_set_length_by_ulong_offset( o, l, buff, 4, table_size, valid ); - } - - - static void - gxv_morx_subtable_type5_InsertList_validate( FT_UShort table_index, - FT_UShort count, - FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table + table_index * 2; - - - while ( p < table + count * 2 + table_index * 2 ) - { - FT_UShort insert_glyphID; - - - GXV_LIMIT_CHECK( 2 ); - insert_glyphID = FT_NEXT_USHORT( p ); - GXV_TRACE(( " 0x%04x", insert_glyphID )); - } - - GXV_TRACE(( "\n" )); - } - - - static void - gxv_morx_subtable_type5_entry_validate( - FT_UShort state, - FT_UShort flags, - GXV_StateTable_GlyphOffsetDesc glyphOffset, - FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bool setMark; - FT_Bool dontAdvance; - FT_Bool currentIsKashidaLike; - FT_Bool markedIsKashidaLike; - FT_Bool currentInsertBefore; - FT_Bool markedInsertBefore; - FT_Byte currentInsertCount; - FT_Byte markedInsertCount; - FT_Byte currentInsertList; - FT_UShort markedInsertList; - - FT_UNUSED( state ); - - - setMark = FT_BOOL( ( flags >> 15 ) & 1 ); - dontAdvance = FT_BOOL( ( flags >> 14 ) & 1 ); - currentIsKashidaLike = FT_BOOL( ( flags >> 13 ) & 1 ); - markedIsKashidaLike = FT_BOOL( ( flags >> 12 ) & 1 ); - currentInsertBefore = FT_BOOL( ( flags >> 11 ) & 1 ); - markedInsertBefore = FT_BOOL( ( flags >> 10 ) & 1 ); - - currentInsertCount = (FT_Byte)( ( flags >> 5 ) & 0x1F ); - markedInsertCount = (FT_Byte)( flags & 0x001F ); - - currentInsertList = (FT_Byte) ( glyphOffset.ul >> 16 ); - markedInsertList = (FT_UShort)( glyphOffset.ul ); - - if ( currentInsertList && 0 != currentInsertCount ) - gxv_morx_subtable_type5_InsertList_validate( currentInsertList, - currentInsertCount, - table, limit, - valid ); - - if ( markedInsertList && 0 != markedInsertCount ) - gxv_morx_subtable_type5_InsertList_validate( markedInsertList, - markedInsertCount, - table, limit, - valid ); - } - - - FT_LOCAL_DEF( void ) - gxv_morx_subtable_type5_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - - GXV_morx_subtable_type5_StateOptRec et_rec; - GXV_morx_subtable_type5_StateOptRecData et = &et_rec; - - - GXV_NAME_ENTER( "morx chain subtable type5 (Glyph Insertion)" ); - - GXV_LIMIT_CHECK( GXV_MORX_SUBTABLE_TYPE5_HEADER_SIZE ); - - valid->xstatetable.optdata = - et; - valid->xstatetable.optdata_load_func = - gxv_morx_subtable_type5_insertionGlyphList_load; - valid->xstatetable.subtable_setup_func = - gxv_morx_subtable_type5_subtable_setup; - valid->xstatetable.entry_glyphoffset_fmt = - GXV_GLYPHOFFSET_ULONG; - valid->xstatetable.entry_validate_func = - gxv_morx_subtable_type5_entry_validate; - - gxv_XStateTable_validate( p, limit, valid ); - - GXV_EXIT; - } - - -/* END */ diff --git a/src/gxvalid/gxvopbd.c b/src/gxvalid/gxvopbd.c deleted file mode 100644 index 8d6fe66..0000000 --- a/src/gxvalid/gxvopbd.c +++ /dev/null @@ -1,217 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvopbd.c */ -/* */ -/* TrueTypeGX/AAT opbd table validation (body). */ -/* */ -/* Copyright 2004, 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvalid.h" -#include "gxvcommn.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvopbd - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** Data and Types *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - typedef struct GXV_opbd_DataRec_ - { - FT_UShort format; - FT_UShort valueOffset_min; - - } GXV_opbd_DataRec, *GXV_opbd_Data; - - -#define GXV_OPBD_DATA( FIELD ) GXV_TABLE_DATA( opbd, FIELD ) - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** UTILITY FUNCTIONS *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - static void - gxv_opbd_LookupValue_validate( FT_UShort glyph, - GXV_LookupValueDesc value, - GXV_Validator valid ) - { - /* offset in LookupTable is measured from the head of opbd table */ - FT_Bytes p = valid->root->base + value.u; - FT_Bytes limit = valid->root->limit; - FT_Short delta_value; - int i; - - - if ( value.u < GXV_OPBD_DATA( valueOffset_min ) ) - GXV_OPBD_DATA( valueOffset_min ) = value.u; - - for ( i = 0; i < 4; i++ ) - { - GXV_LIMIT_CHECK( 2 ); - delta_value = FT_NEXT_SHORT( p ); - - if ( GXV_OPBD_DATA( format ) ) /* format 1, value is ctrl pt. */ - { - if ( delta_value == -1 ) - continue; - - gxv_ctlPoint_validate( glyph, delta_value, valid ); - } - else /* format 0, value is distance */ - continue; - } - } - - - /* - opbd ---------------------+ - | - +===============+ | - | lookup header | | - +===============+ | - | BinSrchHeader | | - +===============+ | - | lastGlyph[0] | | - +---------------+ | - | firstGlyph[0] | | head of opbd sfnt table - +---------------+ | + - | offset[0] | -> | offset [byte] - +===============+ | + - | lastGlyph[1] | | (glyphID - firstGlyph) * 4 * sizeof(FT_Short) [byte] - +---------------+ | - | firstGlyph[1] | | - +---------------+ | - | offset[1] | | - +===============+ | - | - .... | - | - 48bit value array | - +===============+ | - | value | <-------+ - | | - | | - | | - +---------------+ - .... */ - - static GXV_LookupValueDesc - gxv_opbd_LookupFmt4_transit( FT_UShort relative_gindex, - GXV_LookupValueDesc base_value, - FT_Bytes lookuptbl_limit, - GXV_Validator valid ) - { - GXV_LookupValueDesc value; - - FT_UNUSED( lookuptbl_limit ); - FT_UNUSED( valid ); - - /* XXX: check range? */ - value.u = (FT_UShort)( base_value.u + - relative_gindex * 4 * sizeof ( FT_Short ) ); - - return value; - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** opbd TABLE *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - FT_LOCAL_DEF( void ) - gxv_opbd_validate( FT_Bytes table, - FT_Face face, - FT_Validator ftvalid ) - { - GXV_ValidatorRec validrec; - GXV_Validator valid = &validrec; - GXV_opbd_DataRec opbdrec; - GXV_opbd_Data opbd = &opbdrec; - FT_Bytes p = table; - FT_Bytes limit = 0; - - FT_ULong version; - - - valid->root = ftvalid; - valid->table_data = opbd; - valid->face = face; - - FT_TRACE3(( "validating `opbd' table\n" )); - GXV_INIT; - GXV_OPBD_DATA( valueOffset_min ) = 0xFFFFU; - - - GXV_LIMIT_CHECK( 4 + 2 ); - version = FT_NEXT_ULONG( p ); - GXV_OPBD_DATA( format ) = FT_NEXT_USHORT( p ); - - - /* only 0x00010000 is defined (1996) */ - GXV_TRACE(( "(version=0x%08x)\n", version )); - if ( 0x00010000UL != version ) - FT_INVALID_FORMAT; - - /* only values 0 and 1 are defined (1996) */ - GXV_TRACE(( "(format=0x%04x)\n", GXV_OPBD_DATA( format ) )); - if ( 0x0001 < GXV_OPBD_DATA( format ) ) - FT_INVALID_FORMAT; - - valid->lookupval_sign = GXV_LOOKUPVALUE_UNSIGNED; - valid->lookupval_func = gxv_opbd_LookupValue_validate; - valid->lookupfmt4_trans = gxv_opbd_LookupFmt4_transit; - - gxv_LookupTable_validate( p, limit, valid ); - p += valid->subtable_length; - - if ( p > table + GXV_OPBD_DATA( valueOffset_min ) ) - { - GXV_TRACE(( - "found overlap between LookupTable and opbd_value array\n" )); - FT_INVALID_OFFSET; - } - - FT_TRACE4(( "\n" )); - } - - -/* END */ diff --git a/src/gxvalid/gxvprop.c b/src/gxvalid/gxvprop.c deleted file mode 100644 index 010eeda..0000000 --- a/src/gxvalid/gxvprop.c +++ /dev/null @@ -1,301 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvprop.c */ -/* */ -/* TrueTypeGX/AAT prop table validation (body). */ -/* */ -/* Copyright 2004, 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvalid.h" -#include "gxvcommn.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvprop - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** Data and Types *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - -#define GXV_PROP_HEADER_SIZE ( 4 + 2 + 2 ) -#define GXV_PROP_SIZE_MIN GXV_PROP_HEADER_SIZE - - typedef struct GXV_prop_DataRec_ - { - FT_Fixed version; - - } GXV_prop_DataRec, *GXV_prop_Data; - -#define GXV_PROP_DATA( field ) GXV_TABLE_DATA( prop, field ) - -#define GXV_PROP_FLOATER 0x8000U -#define GXV_PROP_USE_COMPLEMENTARY_BRACKET 0x1000U -#define GXV_PROP_COMPLEMENTARY_BRACKET_OFFSET 0x0F00U -#define GXV_PROP_ATTACHING_TO_RIGHT 0x0080U -#define GXV_PROP_RESERVED 0x0060U -#define GXV_PROP_DIRECTIONALITY_CLASS 0x001FU - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** UTILITY FUNCTIONS *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - static void - gxv_prop_zero_advance_validate( FT_UShort gid, - GXV_Validator valid ) - { - FT_Face face; - FT_Error error; - FT_GlyphSlot glyph; - - - GXV_NAME_ENTER( "zero advance" ); - - face = valid->face; - - error = FT_Load_Glyph( face, - gid, - FT_LOAD_IGNORE_TRANSFORM ); - if ( error ) - FT_INVALID_GLYPH_ID; - - glyph = face->glyph; - - if ( glyph->advance.x != (FT_Pos)0 || - glyph->advance.y != (FT_Pos)0 ) - FT_INVALID_DATA; - - GXV_EXIT; - } - - - /* Pass 0 as GLYPH to check the default property */ - static void - gxv_prop_property_validate( FT_UShort property, - FT_UShort glyph, - GXV_Validator valid ) - { - if ( glyph != 0 && ( property & GXV_PROP_FLOATER ) ) - gxv_prop_zero_advance_validate( glyph, valid ); - - if ( property & GXV_PROP_USE_COMPLEMENTARY_BRACKET ) - { - FT_UShort offset; - char complement; - - - offset = (FT_UShort)( property & GXV_PROP_COMPLEMENTARY_BRACKET_OFFSET ); - if ( offset == 0 ) - FT_INVALID_DATA; - - complement = (char)( offset >> 8 ); - if ( complement & 0x08 ) - { - /* Top bit is set: negative */ - - /* Calculate the absolute offset */ - complement = (char)( ( complement & 0x07 ) + 1 ); - - /* The gid for complement must be greater than 0 */ - if ( glyph <= complement ) - FT_INVALID_DATA; - } - else - { - /* The gid for complement must be the face. */ - gxv_glyphid_validate( (FT_UShort)( glyph + complement ), valid ); - } - } - else - { - if ( property & GXV_PROP_COMPLEMENTARY_BRACKET_OFFSET ) - GXV_TRACE(( "glyph %d cannot have complementary bracketing\n", - glyph )); - } - - /* this is introduced in version 2.0 */ - if ( property & GXV_PROP_ATTACHING_TO_RIGHT ) - { - if ( GXV_PROP_DATA( version ) == 0x00010000UL ) - FT_INVALID_DATA; - } - - if ( property & GXV_PROP_RESERVED ) - FT_INVALID_DATA; - - if ( ( property & GXV_PROP_DIRECTIONALITY_CLASS ) > 11 ) - { - /* TODO: Too restricted. Use the validation level. */ - if ( GXV_PROP_DATA( version ) == 0x00010000UL || - GXV_PROP_DATA( version ) == 0x00020000UL ) - FT_INVALID_DATA; - } - } - - - static void - gxv_prop_LookupValue_validate( FT_UShort glyph, - GXV_LookupValueDesc value, - GXV_Validator valid ) - { - gxv_prop_property_validate( value.u, glyph, valid ); - } - - - /* - +===============+ --------+ - | lookup header | | - +===============+ | - | BinSrchHeader | | - +===============+ | - | lastGlyph[0] | | - +---------------+ | - | firstGlyph[0] | | head of lookup table - +---------------+ | + - | offset[0] | -> | offset [byte] - +===============+ | + - | lastGlyph[1] | | (glyphID - firstGlyph) * 2 [byte] - +---------------+ | - | firstGlyph[1] | | - +---------------+ | - | offset[1] | | - +===============+ | - | - ... | - | - 16bit value array | - +===============+ | - | value | <-------+ - ... - */ - - static GXV_LookupValueDesc - gxv_prop_LookupFmt4_transit( FT_UShort relative_gindex, - GXV_LookupValueDesc base_value, - FT_Bytes lookuptbl_limit, - GXV_Validator valid ) - { - FT_Bytes p; - FT_Bytes limit; - FT_UShort offset; - GXV_LookupValueDesc value; - - /* XXX: check range? */ - offset = (FT_UShort)( base_value.u + - relative_gindex * sizeof( FT_UShort ) ); - p = valid->lookuptbl_head + offset; - limit = lookuptbl_limit; - - GXV_LIMIT_CHECK ( 2 ); - value.u = FT_NEXT_USHORT( p ); - - return value; - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** prop TABLE *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - FT_LOCAL_DEF( void ) - gxv_prop_validate( FT_Bytes table, - FT_Face face, - FT_Validator ftvalid ) - { - FT_Bytes p = table; - FT_Bytes limit = 0; - GXV_ValidatorRec validrec; - GXV_Validator valid = &validrec; - - GXV_prop_DataRec proprec; - GXV_prop_Data prop = &proprec; - - FT_Fixed version; - FT_UShort format; - FT_UShort defaultProp; - - - valid->root = ftvalid; - valid->table_data = prop; - valid->face = face; - - FT_TRACE3(( "validating `prop' table\n" )); - GXV_INIT; - - GXV_LIMIT_CHECK( 4 + 2 + 2 ); - version = FT_NEXT_ULONG( p ); - format = FT_NEXT_USHORT( p ); - defaultProp = FT_NEXT_USHORT( p ); - - /* only versions 1.0, 2.0, 3.0 are defined (1996) */ - if ( version != 0x00010000UL && - version != 0x00020000UL && - version != 0x00030000UL ) - FT_INVALID_FORMAT; - - - /* only formats 0x0000, 0x0001 are defined (1996) */ - if ( format > 1 ) - FT_INVALID_FORMAT; - - gxv_prop_property_validate( defaultProp, 0, valid ); - - if ( format == 0 ) - { - FT_TRACE3(( "(format 0, no per-glyph properties, " - "remaining %d bytes are skipped)", limit - p )); - goto Exit; - } - - /* format == 1 */ - GXV_PROP_DATA( version ) = version; - - valid->lookupval_sign = GXV_LOOKUPVALUE_UNSIGNED; - valid->lookupval_func = gxv_prop_LookupValue_validate; - valid->lookupfmt4_trans = gxv_prop_LookupFmt4_transit; - - gxv_LookupTable_validate( p, limit, valid ); - - Exit: - FT_TRACE4(( "\n" )); - } - - -/* END */ diff --git a/src/gxvalid/gxvtrak.c b/src/gxvalid/gxvtrak.c deleted file mode 100644 index 432ee4e..0000000 --- a/src/gxvalid/gxvtrak.c +++ /dev/null @@ -1,277 +0,0 @@ -/***************************************************************************/ -/* */ -/* gxvtrak.c */ -/* */ -/* TrueTypeGX/AAT trak table validation (body). */ -/* */ -/* Copyright 2004, 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., */ -/* David Turner, Robert Wilhelm, and Werner Lemberg. */ -/* */ -/* This file is part of the FreeType project, and may only be used, */ -/* modified, and distributed under the terms of the FreeType project */ -/* license, LICENSE.TXT. By continuing to use, modify, or distribute */ -/* this file you indicate that you have read the license and */ -/* understand and accept it fully. */ -/* */ -/***************************************************************************/ - -/***************************************************************************/ -/* */ -/* gxvalid is derived from both gxlayout module and otvalid module. */ -/* Development of gxlayout is supported by the Information-technology */ -/* Promotion Agency(IPA), Japan. */ -/* */ -/***************************************************************************/ - - -#include "gxvalid.h" -#include "gxvcommn.h" - - - /*************************************************************************/ - /* */ - /* The macro FT_COMPONENT is used in trace mode. It is an implicit */ - /* parameter of the FT_TRACE() and FT_ERROR() macros, used to print/log */ - /* messages during execution. */ - /* */ -#undef FT_COMPONENT -#define FT_COMPONENT trace_gxvtrak - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** Data and Types *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - /* - * referred track table format specification: - * http://developer.apple.com/fonts/TTRefMan/RM06/Chap6trak.html - * last update was 1996. - * ---------------------------------------------- - * [MINIMUM HEADER]: GXV_TRAK_SIZE_MIN - * version (fixed: 32bit) = 0x00010000 - * format (uint16: 16bit) = 0 is only defined (1996) - * horizOffset (uint16: 16bit) - * vertOffset (uint16: 16bit) - * reserved (uint16: 16bit) = 0 - * ---------------------------------------------- - * [VARIABLE BODY]: - * horizData - * header ( 2 + 2 + 4 - * trackTable + nTracks * ( 4 + 2 + 2 ) - * sizeTable + nSizes * 4 ) - * ---------------------------------------------- - * vertData - * header ( 2 + 2 + 4 - * trackTable + nTracks * ( 4 + 2 + 2 ) - * sizeTable + nSizes * 4 ) - * ---------------------------------------------- - */ - typedef struct GXV_trak_DataRec_ - { - FT_UShort trackValueOffset_min; - FT_UShort trackValueOffset_max; - - } GXV_trak_DataRec, *GXV_trak_Data; - - -#define GXV_TRAK_DATA( FIELD ) GXV_TABLE_DATA( trak, FIELD ) - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** UTILITY FUNCTIONS *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - static void - gxv_trak_trackTable_validate( FT_Bytes table, - FT_Bytes limit, - FT_UShort nTracks, - GXV_Validator valid ) - { - FT_Bytes p = table; - - FT_Fixed track; - FT_UShort nameIndex; - FT_UShort offset; - FT_UShort i; - - - GXV_NAME_ENTER( "trackTable" ); - - GXV_TRAK_DATA( trackValueOffset_min ) = 0xFFFFU; - GXV_TRAK_DATA( trackValueOffset_max ) = 0x0000; - - for ( i = 0; i < nTracks; i ++ ) - { - GXV_LIMIT_CHECK( 4 + 2 + 2 ); - track = FT_NEXT_LONG( p ); - nameIndex = FT_NEXT_USHORT( p ); - offset = FT_NEXT_USHORT( p ); - - if ( offset < GXV_TRAK_DATA( trackValueOffset_min ) ) - GXV_TRAK_DATA( trackValueOffset_min ) = offset; - if ( offset > GXV_TRAK_DATA( trackValueOffset_max ) ) - GXV_TRAK_DATA( trackValueOffset_max ) = offset; - - gxv_sfntName_validate( nameIndex, 256, 32767, valid ); - } - - valid->subtable_length = p - table; - GXV_EXIT; - } - - - static void - gxv_trak_trackData_validate( FT_Bytes table, - FT_Bytes limit, - GXV_Validator valid ) - { - FT_Bytes p = table; - FT_UShort nTracks; - FT_UShort nSizes; - FT_ULong sizeTableOffset; - - GXV_ODTECT( 4, odtect ); - - - GXV_ODTECT_INIT( odtect ); - GXV_NAME_ENTER( "trackData" ); - - /* read the header of trackData */ - GXV_LIMIT_CHECK( 2 + 2 + 4 ); - nTracks = FT_NEXT_USHORT( p ); - nSizes = FT_NEXT_USHORT( p ); - sizeTableOffset = FT_NEXT_ULONG( p ); - - gxv_odtect_add_range( table, p - table, "trackData header", odtect ); - - /* validate trackTable */ - gxv_trak_trackTable_validate( p, limit, nTracks, valid ); - gxv_odtect_add_range( p, valid->subtable_length, - "trackTable", odtect ); - - /* sizeTable is array of FT_Fixed, don't check contents */ - p = valid->root->base + sizeTableOffset; - GXV_LIMIT_CHECK( nSizes * 4 ); - gxv_odtect_add_range( p, nSizes * 4, "sizeTable", odtect ); - - /* validate trackValueOffet */ - p = valid->root->base + GXV_TRAK_DATA( trackValueOffset_min ); - if ( limit - p < nTracks * nSizes * 2 ) - GXV_TRACE(( "too short trackValue array\n" )); - - p = valid->root->base + GXV_TRAK_DATA( trackValueOffset_max ); - GXV_LIMIT_CHECK( nSizes * 2 ); - - gxv_odtect_add_range( valid->root->base - + GXV_TRAK_DATA( trackValueOffset_min ), - GXV_TRAK_DATA( trackValueOffset_max ) - - GXV_TRAK_DATA( trackValueOffset_min ) - + nSizes * 2, - "trackValue array", odtect ); - - gxv_odtect_validate( odtect, valid ); - - GXV_EXIT; - } - - - /*************************************************************************/ - /*************************************************************************/ - /***** *****/ - /***** trak TABLE *****/ - /***** *****/ - /*************************************************************************/ - /*************************************************************************/ - - FT_LOCAL_DEF( void ) - gxv_trak_validate( FT_Bytes table, - FT_Face face, - FT_Validator ftvalid ) - { - FT_Bytes p = table; - FT_Bytes limit = 0; - FT_UInt table_size; - - GXV_ValidatorRec validrec; - GXV_Validator valid = &validrec; - GXV_trak_DataRec trakrec; - GXV_trak_Data trak = &trakrec; - - FT_ULong version; - FT_UShort format; - FT_UShort horizOffset; - FT_UShort vertOffset; - FT_UShort reserved; - - - GXV_ODTECT( 3, odtect ); - - GXV_ODTECT_INIT( odtect ); - valid->root = ftvalid; - valid->table_data = trak; - valid->face = face; - - limit = valid->root->limit; - table_size = limit - table; - - FT_TRACE3(( "validating `trak' table\n" )); - GXV_INIT; - - GXV_LIMIT_CHECK( 4 + 2 + 2 + 2 + 2 ); - version = FT_NEXT_ULONG( p ); - format = FT_NEXT_USHORT( p ); - horizOffset = FT_NEXT_USHORT( p ); - vertOffset = FT_NEXT_USHORT( p ); - reserved = FT_NEXT_USHORT( p ); - - GXV_TRACE(( " (version = 0x%08x)\n", version )); - GXV_TRACE(( " (format = 0x%04x)\n", format )); - GXV_TRACE(( " (horizOffset = 0x%04x)\n", horizOffset )); - GXV_TRACE(( " (vertOffset = 0x%04x)\n", vertOffset )); - GXV_TRACE(( " (reserved = 0x%04x)\n", reserved )); - - /* Version 1.0 (always:1996) */ - if ( version != 0x00010000UL ) - FT_INVALID_FORMAT; - - /* format 0 (always:1996) */ - if ( format != 0x0000 ) - FT_INVALID_FORMAT; - - GXV_32BIT_ALIGNMENT_VALIDATE( horizOffset ); - GXV_32BIT_ALIGNMENT_VALIDATE( vertOffset ); - - /* Reserved Fixed Value (always) */ - if ( reserved != 0x0000 ) - FT_INVALID_DATA; - - /* validate trackData */ - if ( 0 < horizOffset ) - { - gxv_trak_trackData_validate( table + horizOffset, limit, valid ); - gxv_odtect_add_range( table + horizOffset, valid->subtable_length, - "horizJustData", odtect ); - } - - if ( 0 < vertOffset ) - { - gxv_trak_trackData_validate( table + vertOffset, limit, valid ); - gxv_odtect_add_range( table + vertOffset, valid->subtable_length, - "vertJustData", odtect ); - } - - gxv_odtect_validate( odtect, valid ); - - FT_TRACE4(( "\n" )); - } - - -/* END */ diff --git a/src/gxvalid/module.mk b/src/gxvalid/module.mk deleted file mode 100644 index 44ef94a..0000000 --- a/src/gxvalid/module.mk +++ /dev/null @@ -1,23 +0,0 @@ -# -# FreeType 2 gxvalid module definition -# - -# Copyright 2004, 2005, 2006 -# by suzuki toshiya, Masatake YAMATO, Red Hat K.K., -# David Turner, Robert Wilhelm, and Werner Lemberg. -# -# This file is part of the FreeType project, and may only be used, modified, -# and distributed under the terms of the FreeType project license, -# LICENSE.TXT. By continuing to use, modify, or distribute this file you -# indicate that you have read the license and understand and accept it -# fully. - - -FTMODULE_H_COMMANDS += GXVALID_MODULE - -define GXVALID_MODULE -$(OPEN_DRIVER)gxv_module_class$(CLOSE_DRIVER) -$(ECHO_DRIVER)gxvalid $(ECHO_DRIVER_DESC)TrueTypeGX/AAT validation module$(ECHO_DRIVER_DONE) -endef - -# EOF diff --git a/src/gxvalid/rules.mk b/src/gxvalid/rules.mk deleted file mode 100644 index 57bc082..0000000 --- a/src/gxvalid/rules.mk +++ /dev/null @@ -1,94 +0,0 @@ -# -# FreeType 2 TrueTypeGX/AAT validation driver configuration rules -# - - -# Copyright 2004, 2005 by suzuki toshiya, Masatake YAMATO, Red Hat K.K., -# David Turner, Robert Wilhelm, and Werner Lemberg. -# -# This file is part of the FreeType project, and may only be used, modified, -# and distributed under the terms of the FreeType project license, -# LICENSE.TXT. By continuing to use, modify, or distribute this file you -# indicate that you have read the license and understand and accept it -# fully. - - -# GXV driver directory -# -GXV_DIR := $(SRC_DIR)/gxvalid - - -# compilation flags for the driver -# -GXV_COMPILE := $(FT_COMPILE) $I$(subst /,$(COMPILER_SEP),$(GXV_DIR)) - - -# GXV driver sources (i.e., C files) -# -GXV_DRV_SRC := $(GXV_DIR)/gxvcommn.c \ - $(GXV_DIR)/gxvfeat.c \ - $(GXV_DIR)/gxvbsln.c \ - $(GXV_DIR)/gxvtrak.c \ - $(GXV_DIR)/gxvopbd.c \ - $(GXV_DIR)/gxvprop.c \ - $(GXV_DIR)/gxvjust.c \ - $(GXV_DIR)/gxvmort.c \ - $(GXV_DIR)/gxvmort0.c \ - $(GXV_DIR)/gxvmort1.c \ - $(GXV_DIR)/gxvmort2.c \ - $(GXV_DIR)/gxvmort4.c \ - $(GXV_DIR)/gxvmort5.c \ - $(GXV_DIR)/gxvmorx.c \ - $(GXV_DIR)/gxvmorx0.c \ - $(GXV_DIR)/gxvmorx1.c \ - $(GXV_DIR)/gxvmorx2.c \ - $(GXV_DIR)/gxvmorx4.c \ - $(GXV_DIR)/gxvmorx5.c \ - $(GXV_DIR)/gxvlcar.c \ - $(GXV_DIR)/gxvkern.c \ - $(GXV_DIR)/gxvmod.c - -# GXV driver headers -# -GXV_DRV_H := $(GXV_DIR)/gxvalid.h \ - $(GXV_DIR)/gxverror.h \ - $(GXV_DIR)/gxvcommn.h \ - $(GXV_DIR)/gxvfeat.h \ - $(GXV_DIR)/gxvmod.h \ - $(GXV_DIR)/gxvmort.h \ - $(GXV_DIR)/gxvmorx.h - - -# GXV driver object(s) -# -# GXV_DRV_OBJ_M is used during `multi' builds. -# GXV_DRV_OBJ_S is used during `single' builds. -# -GXV_DRV_OBJ_M := $(GXV_DRV_SRC:$(GXV_DIR)/%.c=$(OBJ_DIR)/%.$O) -GXV_DRV_OBJ_S := $(OBJ_DIR)/gxvalid.$O - -# GXV driver source file for single build -# -GXV_DRV_SRC_S := $(GXV_DIR)/gxvalid.c - - -# GXV driver - single object -# -$(GXV_DRV_OBJ_S): $(GXV_DRV_SRC_S) $(GXV_DRV_SRC) \ - $(FREETYPE_H) $(GXV_DRV_H) - $(GXV_COMPILE) $T$(subst /,$(COMPILER_SEP),$@ $(GXV_DRV_SRC_S)) - - -# GXV driver - multiple objects -# -$(OBJ_DIR)/%.$O: $(GXV_DIR)/%.c $(FREETYPE_H) $(GXV_DRV_H) - $(GXV_COMPILE) $T$(subst /,$(COMPILER_SEP),$@ $<) - - -# update main driver object lists -# -DRV_OBJS_S += $(GXV_DRV_OBJ_S) -DRV_OBJS_M += $(GXV_DRV_OBJ_M) - - -# EOF |