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|
%option noyywrap
%option nounput
%option never-interactive
%option prefix="Mate"
%{
/* mate_parser.l
* lexical analyzer for MATE configuration files
*
* Copyright 2004, Luis E. Garcia Ontanon <luis.ontanon@gmail.com>
*
* $Id$
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include "mate.h"
#include "mate_grammar.h"
void MateParser(void*,int, gchar*, mate_config* matecfg);
void *MateParserAlloc(void *(*)(gulong));
void MateParserFree( void*, void(*)(void*) );
void MateParseTrace(FILE*,char*);
#define MAX_INCLUDE_DEPTH 10
static YY_BUFFER_STATE include_stack[MAX_INCLUDE_DEPTH];
static int include_stack_ptr = 0;
static void* pParser;
static mate_config_frame* current_frame;
static mate_config* mc;
#define MATE_PARSE(token_type) MateParser(pParser, (token_type), g_strdup(yytext), mc );
%}
pdu_kw Pdu
gop_kw Gop
gog_kw Gog
transform_kw Transform
match_kw Match
always_kw Always
strict_kw Strict
every_kw Every
loose_kw Loose
replace_kw Replace
insert_kw Insert
gop_tree_kw GopTree
member_kw Member
on_kw On
start_kw Start
stop_kw Stop
extra_kw Extra
show_tree_kw ShowTree
show_times_kw ShowTimes
expiration_kw Expiration
idle_timeout_kw IdleTimeout
lifetime_kw Lifetime
no_tree_kw NoTree
pdu_tree_kw PduTree
frame_tree_kw FrameTree
basic_tree_kw BasicTree
true_kw [Tt][Rr][Uu][Ee]
false_kw [Ff][Aa][Ll][Ss][Ee]
proto_kw Proto
payload_kw Payload
transport_kw Transport
criteria_kw Criteria
accept_kw Accept
reject_kw Reject
extract_kw Extract
from_kw From
drop_unassigned_kw DropUnassigned
discard_pdu_data_kw DiscardPduData
last_pdu_kw LastPdu
done_kw Done
filename_kw Filename
debug_kw Debug
level_kw Level
default_kw Default
open_parens "("
close_parens ")"
open_brace "{"
close_brace "}"
comma ","
semicolon ";"
slash "/"
pipe "|"
integer [0-9]+
floating ([0-9]+\.[0-9]+)
doted_ip [0-9][0-9]?[0-9]?\.[0-9][0-9]?[0-9]?\.[0-9][0-9]?[0-9]?\.[0-9][0-9]?[0-9]?
colonized [0-9A-Fa-f:]*[:][0-9A-Fa-f:]*
name [a-z][-\.a-zA-Z0-9_]*
avp_operator [$^~=<>!]
quote ["]
not_quoted [^"]*
include "#include"
filename [-A-Za-z0-9_/.]+
whitespace [[:blank:]\r]+
newline \n
comment "//"[^\n]*\n
blk_cmnt_start "/*"
cmnt_char .
blk_cmnt_stop "*/"
%START OUTSIDE QUOTED INCLUDING COMMENT
%%
{newline} current_frame->linenum++;
{whitespace} ;
<OUTSIDE>{include} BEGIN INCLUDING;
<INCLUDING>{filename} {
if ( include_stack_ptr >= MAX_INCLUDE_DEPTH )
g_error("dtd_preparse: include files nested to deeply");
include_stack[include_stack_ptr++] = YY_CURRENT_BUFFER;
yyin = fopen( yytext, "r" );
if (!yyin) {
yy_delete_buffer( YY_CURRENT_BUFFER );
/* coverity[negative_sink] */
yy_switch_to_buffer(include_stack[--include_stack_ptr] );
if (errno)
g_string_sprintfa(mc->config_error, "Mate parser: Could not open file: '%s': %s", yytext, strerror(errno) );
} else {
current_frame = g_malloc(sizeof(mate_config_frame));
current_frame->filename = g_strdup(yytext);
current_frame->linenum = 1;
g_ptr_array_add(mc->config_stack,current_frame);
yy_switch_to_buffer(yy_create_buffer( yyin, YY_BUF_SIZE ) );
}
BEGIN OUTSIDE;
}
<<EOF>> {
/* coverity[check_after_sink] */
if ( --include_stack_ptr < 0 ) {
yyterminate();
} else {
yy_delete_buffer( YY_CURRENT_BUFFER );
yy_switch_to_buffer( include_stack[include_stack_ptr] );
g_free(current_frame->filename);
g_free(current_frame);
current_frame = g_ptr_array_remove_index(mc->config_stack,mc->config_stack->len-1);
}
}
<OUTSIDE>{comment} ;
<OUTSIDE>{blk_cmnt_start} BEGIN COMMENT;
<COMMENT>{cmnt_char} ;
<COMMENT>{blk_cmnt_stop} BEGIN OUTSIDE;
<OUTSIDE>{pdu_kw} MATE_PARSE(TOKEN_PDU_KW);
<OUTSIDE>{gop_kw} MATE_PARSE(TOKEN_GOP_KW);
<OUTSIDE>{gog_kw} MATE_PARSE(TOKEN_GOG_KW);
<OUTSIDE>{transform_kw} MATE_PARSE(TOKEN_TRANSFORM_KW);
<OUTSIDE>{match_kw} MATE_PARSE(TOKEN_MATCH_KW);
<OUTSIDE>{strict_kw} MATE_PARSE(TOKEN_STRICT_KW);
<OUTSIDE>{every_kw} MATE_PARSE(TOKEN_EVERY_KW);
<OUTSIDE>{loose_kw} MATE_PARSE(TOKEN_LOOSE_KW);
<OUTSIDE>{replace_kw} MATE_PARSE(TOKEN_REPLACE_KW);
<OUTSIDE>{insert_kw} MATE_PARSE(TOKEN_INSERT_KW);
<OUTSIDE>{gop_tree_kw} MATE_PARSE(TOKEN_GOP_TREE_KW);
<OUTSIDE>{member_kw} MATE_PARSE(TOKEN_MEMBER_KW);
<OUTSIDE>{on_kw} MATE_PARSE(TOKEN_ON_KW);
<OUTSIDE>{start_kw} MATE_PARSE(TOKEN_START_KW);
<OUTSIDE>{stop_kw} MATE_PARSE(TOKEN_STOP_KW);
<OUTSIDE>{extra_kw} MATE_PARSE(TOKEN_EXTRA_KW);
<OUTSIDE>{show_tree_kw} MATE_PARSE(TOKEN_SHOW_TREE_KW);
<OUTSIDE>{show_times_kw} MATE_PARSE(TOKEN_SHOW_TIMES_KW);
<OUTSIDE>{expiration_kw} MATE_PARSE(TOKEN_EXPIRATION_KW);
<OUTSIDE>{idle_timeout_kw} MATE_PARSE(TOKEN_IDLE_TIMEOUT_KW);
<OUTSIDE>{lifetime_kw} MATE_PARSE(TOKEN_LIFETIME_KW);
<OUTSIDE>{no_tree_kw} MATE_PARSE(TOKEN_NO_TREE_KW);
<OUTSIDE>{pdu_tree_kw} MATE_PARSE(TOKEN_PDU_TREE_KW);
<OUTSIDE>{frame_tree_kw} MATE_PARSE(TOKEN_FRAME_TREE_KW);
<OUTSIDE>{basic_tree_kw} MATE_PARSE(TOKEN_BASIC_TREE_KW);
<OUTSIDE>{true_kw} MATE_PARSE(TOKEN_TRUE_KW);
<OUTSIDE>{false_kw} MATE_PARSE(TOKEN_FALSE_KW);
<OUTSIDE>{proto_kw} MATE_PARSE(TOKEN_PROTO_KW);
<OUTSIDE>{payload_kw} MATE_PARSE(TOKEN_PAYLOAD_KW);
<OUTSIDE>{transport_kw} MATE_PARSE(TOKEN_TRANSPORT_KW);
<OUTSIDE>{criteria_kw} MATE_PARSE(TOKEN_CRITERIA_KW);
<OUTSIDE>{accept_kw} MATE_PARSE(TOKEN_ACCEPT_KW);
<OUTSIDE>{reject_kw} MATE_PARSE(TOKEN_REJECT_KW);
<OUTSIDE>{extract_kw} MATE_PARSE(TOKEN_EXTRACT_KW);
<OUTSIDE>{from_kw} MATE_PARSE(TOKEN_FROM_KW);
<OUTSIDE>{drop_unassigned_kw} MATE_PARSE(TOKEN_DROP_UNASSIGNED_KW);
<OUTSIDE>{discard_pdu_data_kw} MATE_PARSE(TOKEN_DISCARD_PDU_DATA_KW);
<OUTSIDE>{last_pdu_kw} MATE_PARSE(TOKEN_LAST_PDU_KW);
<OUTSIDE>{done_kw} MATE_PARSE(TOKEN_DONE_KW);
<OUTSIDE>{filename_kw} MATE_PARSE(TOKEN_FILENAME_KW);
<OUTSIDE>{debug_kw} MATE_PARSE(TOKEN_DEBUG_KW);
<OUTSIDE>{level_kw} MATE_PARSE(TOKEN_LEVEL_KW);
<OUTSIDE>{default_kw} MATE_PARSE(TOKEN_DEFAULT_KW);
<OUTSIDE>{open_parens} MATE_PARSE(TOKEN_OPEN_PARENS);
<OUTSIDE>{close_parens} MATE_PARSE(TOKEN_CLOSE_PARENS);
<OUTSIDE>{open_brace} MATE_PARSE(TOKEN_OPEN_BRACE);
<OUTSIDE>{close_brace} MATE_PARSE(TOKEN_CLOSE_BRACE);
<OUTSIDE>{comma} MATE_PARSE(TOKEN_COMMA);
<OUTSIDE>{semicolon} MATE_PARSE(TOKEN_SEMICOLON);
<OUTSIDE>{slash} MATE_PARSE(TOKEN_SLASH);
<OUTSIDE>{pipe} MATE_PARSE(TOKEN_PIPE);
<OUTSIDE>{integer} MATE_PARSE(TOKEN_INTEGER);
<OUTSIDE>{floating} MATE_PARSE(TOKEN_FLOATING);
<OUTSIDE>{doted_ip} MATE_PARSE(TOKEN_DOTED_IP);
<OUTSIDE>{colonized} MATE_PARSE(TOKEN_COLONIZED);
<OUTSIDE>{name} MATE_PARSE(TOKEN_NAME);
<OUTSIDE>{avp_operator} MATE_PARSE(TOKEN_AVP_OPERATOR);
<OUTSIDE>{quote} BEGIN QUOTED;
<QUOTED>{not_quoted} MATE_PARSE(TOKEN_QUOTED);
<QUOTED>{quote} BEGIN OUTSIDE;
%%
extern gboolean mate_load_config(const gchar* filename, mate_config* matecfg) {
volatile gboolean state = TRUE;
mc = matecfg;
yyin = fopen(filename,"r");
if (!yyin) {
g_string_sprintfa(mc->config_error,"Mate parser: Could not open file: '%s', error: %s", filename, strerror(errno) );
return FALSE;
}
mc->config_stack = g_ptr_array_new();
current_frame = g_malloc(sizeof(mate_config_frame));
current_frame->filename = g_strdup(filename);
current_frame->linenum = 1;
g_ptr_array_add(mc->config_stack,current_frame);
pParser = MateParserAlloc(g_malloc);
/* MateParserTrace(stdout,""); */
TRY {
BEGIN OUTSIDE;
yylex();
MateParser(pParser, 0, NULL,mc);
yyrestart(NULL);
MateParserFree(pParser, g_free );
g_free(current_frame->filename);
g_free(current_frame);
g_ptr_array_free(mc->config_stack,FALSE);
} CATCH(MateConfigError) {
state = FALSE;
} CATCH_ALL {
state = FALSE;
g_string_sprintfa(mc->config_error,"An unexpected error occurred");
}
ENDTRY;
return state;
}
|