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* Add an additional "protocol index" argument to "{old_}dissector_add()",Guy Harris2001-01-091-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | "{old_}heur_dissector_add()", "{old_}conv_dissector_add()", and "register_dissector()", so that an entry in those tables has associated with it the protocol index of the protocol the dissector handles (or -1, if there is no protocol index for it). This is for future use in a number of places. (Arguably, "proto_register_protocol()" should take a dissector pointer as an argument, but 1) it'd have to handle both regular and heuristic dissectors; 2) making it take either a "dissector_t" or a union of that and a "heur_dissector_t" introduces some painful header-file interdependencies so I'm punting on that for now. As with other Ethereal internal APIs, these APIs are subject to change in the future, at least until Ethereal 1.0 comes out....) svn path=/trunk/; revision=2849
* Have "proto_register_protocol()" build a list of data structures forGuy Harris2001-01-031-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | protocols, in addition to adding structures to the list of filterable fields. Give it an extra argument that specifies a "short name" for the protocol, for use in such places as pinfo->current_proto; the dialog box for constructing filters; the preferences tab for the protocol; and so on (although we're not yet using it in all those places). Make the preference name that appears in the preferences file and the command line for the DIAMETER protocol "diameter", not "Diameter"; the convention is that the name in question be all-lower-case. Make some routines and variables that aren't exported static. Update a comment in the ICP dissector to make it clear that the dissector won't see fragments other than the first fragment of a fragmented datagram. svn path=/trunk/; revision=2810
* Fixes, from Heikki Vatiainen, to bugs introduced by the tvbuffificationGuy Harris2000-11-191-1/+2
| | | | | | of the SAP and SDP dissectors. svn path=/trunk/; revision=2676
* Add a mechanism by which a dissector can be registered by name, anotherGuy Harris2000-11-151-2/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dissector can get a "handle" for that dissector by name and then call that dissector through the handle. This allows dissectors that can't be called through a port table or a heuristic table to be called from other dissectors without directly referring to the dissector function - dynamically-loaded modules, under Windows, cannot directly call functions in the main program, and non-plugin dissectors are in the main program and thus cannot be called from plugin dissectors unless either 1) a pointer to the dissector is put in the Big Transfer Vector or 2) some other mechanism for getting a pointer to the dissector is provided. This mechanism could also support registering old-style dissectors and calling them from new-style dissectors without the new-style dissector having to do the argument translation itself (I didn't add support for registering old-style dissectors because I'd prefer to have people tvbuffify their code if they have to register a dissector...). It could also, in the future, perhaps support disabling of protocols; setting "pinfo->current_proto"; inside "call_dissector()" - and inside "{old_}dissector_try_port()" and "{old_"dissector_try_heuristic()" - allowing a pile of stuff that currently has to be done in every dissector be done by common code. (I have some ideas about how to do this, by having "proto_register_protocol()" take an abbreviation - of the sort that would be put in, for example, "pinfo->current_proto" - as an argument; having the calls to register dissectors take an index returned by "proto_register_protocol()" as an argument. The abbreviation could be used elsewhere as well, e.g. in the "Decoding" tab of the "Edit->Protocols" dialog box, and in a GUI for constructing protocol filters. Watch this space.) Make "dissect_sdp()" the first client of this mechanism; it's now static to "packet-sdp.c", and all dissectors that call it - including the MGCP plugin - now call it through a dissector handle fetched by "find_dissector()". (Next step - see if Ethereal can now compile on Windows as a result of this.) svn path=/trunk/; revision=2647
* Use "tvb_offset_exists()" rather than "tvb_length_remaining()" to checkGuy Harris2000-11-131-2/+2
| | | | | | | whether there's any data left in the tvbuff starting at a specified offset. svn path=/trunk/; revision=2636
* Don't overwrite the "Info" column in the SDP dissector, either - appendGuy Harris2000-11-131-2/+16
| | | | | | | to it, so as not to stomp on what the protocol that's using SDP put there. svn path=/trunk/; revision=2625
* As RFC 2327 says, "SDP is purely a format for session description - itGuy Harris2000-11-121-2/+2
| | | | | | | | | | | | | | | | | | | does not incorporate a transport protocol, and is intended to use different transport protocols as appropriate including the Session Announcement Protocol [4], Session Initiation Protocol [11], Real- Time Streaming Protocol [12], electronic mail using the MIME extensions, and the Hypertext Transport Protocol." As such, it shouldn't set the protocol column to SDP, as that means the protocol column won't indicate what the transport protocol was; instead, it should append "/SDP" to the protocol column - RTSP was, after calling "dissect_sdp()", setting the protocol column to "RTSP/SDP", and this change means that all protocols using SDP will have the protocol column set in that fashion, and that the RTSP dissector doesn't have to explicitly set the protocol column to cause that to happen. svn path=/trunk/; revision=2624
* Tvbuffify the SAP and SDP dissectors.Guy Harris2000-11-101-29/+38
| | | | | | | | | | | Add "tvb_find_line_end_unquoted()" for the benefit of the SDP dissector; get rid of "find_line_end_unquoted()" as nobody uses it any more. Add "tvb_pbrk_guint8()" for the benefit of "tvb_find_line_end_unquoted()"; it searches for any of a number of characters, unlike "tvb_find_guint8()" which searches for only one. svn path=/trunk/; revision=2595
* Support for embedded newlines in SDP fields, from Robert Tsai.Guy Harris2000-11-091-3/+4
| | | | svn path=/trunk/; revision=2584
* Move format_text(), get_token_len(), and fine_line_end(), into strutil.cGilbert Ramirez2000-09-111-1/+2
| | | | | | | This keeps tvbuff.c generic; it doesn't have to pull in packet.h and all of it's included files. svn path=/trunk/; revision=2409
* Add the "Edit:Protocols..." feature which currently only implementsLaurent Deniel2000-08-131-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the following: It is now possible to enable/disable a particular protocol decoding (i.e. the protocol dissector is void or not). When a protocol is disabled, it is displayed as Data and of course, all linked sub-protocols are disabled as well. Disabling a protocol could be interesting: - in case of buggy dissectors - in case of wrong heuristics - for performance reasons - to decode the data as another protocol (TODO) Currently (if I am not wrong), all dissectors but NFS can be disabled (and dissectors that do not register protocols :-) I do not like the way the RPC sub-dissectors are disabled (in the sub-dissectors) since this could be done in the RPC dissector itself, knowing the sub-protocol hfinfo entry (this is why, I've not modified the NFS one yet). Two functions are added in proto.c : gboolean proto_is_protocol_enabled(int n); void proto_set_decoding(int n, gboolean enabled); and two MACROs which can be used in dissectors: OLD_CHECK_DISPLAY_AS_DATA(index, pd, offset, fd, tree) CHECK_DISPLAY_AS_DATA(index, tvb, pinfo, tree) See also the XXX in proto_dlg.c and proto.c around the new functions. svn path=/trunk/; revision=2267
* Add routines for adding items to a protocol tree that take arguments ofGuy Harris2000-05-311-2/+2
| | | | | | | | | | | | | | | | | a particular type, rather than taking a varargs list, along the lines of the "proto_tree_add_XXX_format()" routines. Replace most calls to "proto_tree_add_item()" and "proto_tree_add_item_hidden()" with calls to those routines. Rename "proto_tree_add_item()" and "proto_tree_add_item_hidden()" to "proto_tree_add_item_old()" and "proto_tree_add_item_hidden_old()", and add new "proto_tree_add_item()" and "proto_tree_add_item_hidden()" routines that don't take the item to be added as an argument - instead, they fetch the argument from the packet whose tvbuff was handed to them, from the offset handed to them. svn path=/trunk/; revision=2031
* Add tvbuff class.Gilbert Ramirez2000-05-111-5/+5
| | | | | | | | | | | | | | | Add exceptions routines. Convert proto_tree_add_*() routines to require tvbuff_t* argument. Convert all dissectors to pass NULL argument ("NullTVB" macro == NULL) as the tvbuff_t* argument to proto_tree_add_*() routines. dissect_packet() creates a tvbuff_t, wraps the next dissect call in a TRY block, will print "Short Frame" on the proto_tree if a BoundsError exception is caught. The FDDI dissector is converted to use tvbuff's. svn path=/trunk/; revision=1939
* Fix files that had Gilbert's old e-mail address or that didn't have myGuy Harris2000-01-221-2/+2
| | | | | | forwarding e-mail address. svn path=/trunk/; revision=1522
* Indicate that the RFC for SDP is 2327.Guy Harris2000-01-131-2/+2
| | | | svn path=/trunk/; revision=1459
* Replace the ETT_ "enum" members, declared in "packet.h", withGuy Harris1999-11-161-2/+8
| | | | | | | | | | | | | | | | | dynamically-assigned "ett_" integer values, assigned by "proto_register_subtree_array()"; this: obviates the need to update "packet.h" whenever you add a new subtree type - you only have to add a call to "proto_register_subtree_array()" to a "register" routine and an array of pointers to "ett_", if they're not already there, and add a pointer to the new "ett_" variable to the array, if they are there; would allow run-time-loaded dissectors to allocate subtree types when they're loaded. svn path=/trunk/; revision=1043
* Made the protocol (but not the fields) use the new proto_tree routine,Gilbert Ramirez1999-07-291-3/+16
| | | | | | | allowing users to filter on the existence of these protocols. I also added packet-clip.c to the Nmake makefile. svn path=/trunk/; revision=402
* Created a new protocol tree implementation and a new display filterGilbert Ramirez1999-07-071-7/+6
| | | | | | | mechanism that is built into ethereal. Wiretap is now used to read all file formats. Libpcap is used only for capturing. svn path=/trunk/; revision=342
* Add support for RTSP (RFC 2326) over TCP, and SDP (RFC 2327) insideGuy Harris1999-07-071-0/+176
RTSP, from Jason Lango <jal@netapp.com>. svn path=/trunk/; revision=340