2 * Routines for Message Session Relay Protocol(MSRP) dissection
3 * Copyright 2005, Anders Broman <anders.broman[at]ericsson.com>
7 * Wireshark - Network traffic analyzer
8 * By Gerald Combs <gerald@wireshark.org>
9 * Copyright 1998 Gerald Combs
11 * This program is free software; you can redistribute it and/or
12 * modify it under the terms of the GNU General Public License
13 * as published by the Free Software Foundation; either version 2
14 * of the License, or (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
26 * http://www.ietf.org/internet-drafts/draft-ietf-simple-message-sessions-10.txt
39 #include <epan/conversation.h>
40 #include <epan/strutil.h>
41 #include <epan/packet.h>
42 #include <epan/emem.h>
45 #include "packet-msrp.h"
47 #define TCP_PORT_MSRP 0
49 #define MSRP_HDR "MSRP"
50 #define MSRP_HDR_LEN (strlen (MSRP_HDR))
52 /* Initialize the protocol and registered fields */
53 static int proto_msrp = -1;
55 /* Initialize the subtree pointers */
56 static int ett_msrp = -1;
57 static int ett_raw_text = -1;
58 static int ett_msrp_reqresp = -1;
59 static int ett_msrp_hdr = -1;
60 static int ett_msrp_element = -1;
61 static int ett_msrp_data = -1;
62 static int ett_msrp_end_line = -1;
63 static int ett_msrp_setup = -1;
65 static int hf_msrp_response_line = -1;
66 static int hf_msrp_request_line = -1;
67 static int hf_msrp_transactionID = -1;
68 static int hf_msrp_method = -1;
69 static int hf_msrp_status_code = -1;
70 static int hf_msrp_msg_hdr = -1;
71 static int hf_msrp_end_line = -1;
72 static int hf_msrp_cnt_flg = -1;
74 static int hf_msrp_data = -1;
76 /* MSRP setup fields */
77 static int hf_msrp_setup = -1;
78 static int hf_msrp_setup_frame = -1;
79 static int hf_msrp_setup_method = -1;
85 static const msrp_header_t msrp_headers[] = {
87 { "From-Path"}, /* 1 */
89 { "Message-ID"}, /* 3 */
90 { "Success-Report"}, /* 4 */
91 { "Failure-Report"}, /* 5 */
92 { "Byte-Range"}, /* 6 */
94 { "Content-Type"}, /* 8 */
95 { "Content-ID"}, /* 9 */
96 { "Content-Description"}, /* 10 */
97 { "Content-Disposition"}, /* 11 */
98 { "Use-Path"}, /* 12 */
99 { "WWW-Authenticate"}, /* 13 */
100 { "Authorization"}, /* 14 */
101 { "Authentication-Info"}, /* 15 */
104 static gint hf_header_array[] = {
105 -1, /* 0"Unknown-header" - Pad so that the real headers start at index 1 */
106 -1, /* 1"From-Path */
108 -1, /* 3"Message-ID" */
109 -1, /* 4"Success-Report" */
110 -1, /* 5"Failure-Report" */
111 -1, /* 6"Byte-Range" */
113 -1, /* 8"Content-Type" */
114 -1, /* 9"Content-ID" */
115 -1, /* 10"Content-Description" */
116 -1, /* 11"Content-Disposition" */
117 -1, /* 12"Use-Path" */
118 -1, /* 13"WWW-Authenticate" */
119 -1, /* 14"Authorization" */
120 -1, /* 15"Authentication-Info" */
123 #define MSRP_FROM_PATH 1
124 #define MSRP_TO_PATH 2
125 #define MSRP_MESSAGE_ID 3
126 #define MSRP_SUCCESS_REPORT 4
127 #define MSRP_FAILURE_REPORT 5
128 #define MSRP_BYTE_RANGE 6
129 #define MSRP_STATUS 7
130 #define MSRP_CONTENT_TYPE 8
131 #define MSRP_CONTENT_ID 9
132 #define MSRP_CONTENT_DISCRIPTION 10
133 #define MSRP_CONTENT_DISPOSITION 11
134 #define MSRP_USE_PATH 12
135 #define MSRP_WWW_AUTHENTICATE 13
136 #define MSRP_AUTHORIZATION 14
137 #define MSRP_AUTHENTICATION_INFO 15
139 static dissector_handle_t msrp_handle;
140 gboolean global_msrp_raw_text = TRUE;
142 /* MSRP content type and internet media type used by other dissectors
143 * are the same. List of media types from IANA at:
144 * http://www.iana.org/assignments/media-types/index.html */
145 static dissector_table_t media_type_dissector_table;
147 static int dissect_msrp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
150 /* Displaying conversation setup info */
151 static gboolean global_msrp_show_setup_info = TRUE;
152 static void show_setup_info(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree);
154 /* Set up an MSRP conversation using the info given */
155 void msrp_add_address( packet_info *pinfo,
156 address *addr, int port,
157 const gchar *setup_method, guint32 setup_frame_number)
160 conversation_t* p_conv;
161 struct _msrp_conversation_info *p_conv_data = NULL;
164 * If this isn't the first time this packet has been processed,
165 * we've already done this work, so we don't need to do it
168 if (pinfo->fd->flags.visited)
173 SET_ADDRESS(&null_addr, AT_NONE, 0, NULL);
176 * Check if the ip address and port combination is not
177 * already registered as a conversation.
179 p_conv = find_conversation( pinfo->fd->num, addr, &null_addr, PT_TCP, port, 0,
180 NO_ADDR_B | NO_PORT_B);
183 * If not, create a new conversation.
186 p_conv = conversation_new( pinfo->fd->num, addr, &null_addr, PT_TCP,
188 NO_ADDR2 | NO_PORT2);
192 conversation_set_dissector(p_conv, msrp_handle);
195 * Check if the conversation has data associated with it.
197 p_conv_data = conversation_get_proto_data(p_conv, proto_msrp);
200 * If not, add a new data item.
203 /* Create conversation data */
204 p_conv_data = se_alloc(sizeof(struct _msrp_conversation_info));
209 memset(p_conv_data, 0, sizeof(struct _msrp_conversation_info));
210 conversation_add_proto_data(p_conv, proto_msrp, p_conv_data);
214 * Update the conversation data.
216 p_conv_data->setup_method_set = TRUE;
217 g_strlcpy(p_conv_data->setup_method, setup_method, MAX_MSRP_SETUP_METHOD_SIZE);
218 p_conv_data->setup_frame_number = setup_frame_number;
223 /* Look for conversation info and display any setup info found */
224 void show_setup_info(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
226 /* Conversation and current data */
227 conversation_t *p_conv = NULL;
228 struct _msrp_conversation_info *p_conv_data = NULL;
230 /* Use existing packet data if available */
231 p_conv_data = p_get_proto_data(pinfo->fd, proto_msrp);
235 /* First time, get info from conversation */
236 p_conv = find_conversation(pinfo->fd->num, &pinfo->net_dst, &pinfo->net_src,
238 pinfo->destport, pinfo->srcport, 0);
242 /* Look for data in conversation */
243 struct _msrp_conversation_info *p_conv_packet_data;
244 p_conv_data = conversation_get_proto_data(p_conv, proto_msrp);
248 /* Save this conversation info into packet info */
249 p_conv_packet_data = se_alloc(sizeof(struct _msrp_conversation_info));
250 if (!p_conv_packet_data)
254 memcpy(p_conv_packet_data, p_conv_data,
255 sizeof(struct _msrp_conversation_info));
257 p_add_proto_data(pinfo->fd, proto_msrp, p_conv_packet_data);
262 /* Create setup info subtree with summary info. */
263 if (p_conv_data && p_conv_data->setup_method_set)
265 proto_tree *msrp_setup_tree;
266 proto_item *ti = proto_tree_add_string_format(tree, hf_msrp_setup, tvb, 0, 0,
268 "Stream setup by %s (frame %u)",
269 p_conv_data->setup_method,
270 p_conv_data->setup_frame_number);
271 PROTO_ITEM_SET_GENERATED(ti);
272 msrp_setup_tree = proto_item_add_subtree(ti, ett_msrp_setup);
275 /* Add details into subtree */
276 proto_item* item = proto_tree_add_uint(msrp_setup_tree, hf_msrp_setup_frame,
277 tvb, 0, 0, p_conv_data->setup_frame_number);
278 PROTO_ITEM_SET_GENERATED(item);
279 item = proto_tree_add_string(msrp_setup_tree, hf_msrp_setup_method,
280 tvb, 0, 0, p_conv_data->setup_method);
281 PROTO_ITEM_SET_GENERATED(item);
288 /* Returns index of headers */
289 static gint msrp_is_known_msrp_header(tvbuff_t *tvb, int offset, guint header_len)
293 for (i = 1; i < array_length(msrp_headers); i++) {
294 if (header_len == strlen(msrp_headers[i].name) &&
295 tvb_strncaseeql(tvb, offset, msrp_headers[i].name, header_len) == 0)
306 * Display the entire message as raw text.
309 tvb_raw_text_add(tvbuff_t *tvb, proto_tree *tree)
311 int offset, next_offset, linelen;
314 while (tvb_offset_exists(tvb, offset)) {
315 /* 'desegment' is FALSE so will set next_offset to beyond the end of
316 the buffer if no line ending is found */
317 tvb_find_line_end(tvb, offset, -1, &next_offset, FALSE);
318 linelen = next_offset - offset;
320 proto_tree_add_text(tree, tvb, offset, linelen,
321 "%s", tvb_format_text(tvb, offset, linelen));
323 offset = next_offset;
327 /* This code is modeled on the code in packet-sip.c
328 * ABNF code for the MSRP header:
329 * The following syntax specification uses the augmented Backus-Naur
330 * Form (BNF) as described in RFC-2234 [6].
333 * msrp-req-or-resp = msrp-request / msrp-response
334 * msrp-request = req-start headers [content-stuff] end-line
335 * msrp-response = resp-start headers end-line
337 * req-start = pMSRP SP transact-id SP method CRLF
338 * resp-start = pMSRP SP transact-id SP status-code [SP phrase] CRLF
341 * pMSRP = %x4D.53.52.50 ; MSRP in caps
342 * transact-id = ident
343 * method = mSEND / mREPORT / other-method
344 * mSEND = %x53.45.4e.44 ; SEND in caps
345 * mREPORT = %x52.45.50.4f.52.54; REPORT in caps
346 * other-method = 1*UPALPHA
348 * "MSRP 1234 SEND(CRLF)"
349 * "MSRP 1234 200 OK(CRLF)
352 check_msrp_header(tvbuff_t *tvb)
357 gint next_offset = 0;
362 * Note that "tvb_find_line_end()" will return a value that
363 * is not longer than what's in the buffer, so the
364 * "tvb_get_ptr()" calls below won't throw exceptions. *
367 linelen = tvb_find_line_end(tvb, 0, -1, &next_offset, FALSE);
368 /* Find the first SP */
369 space_offset = tvb_find_guint8(tvb, 0, -1, ' ');
371 if (space_offset <= 0) {
373 * Either there's no space in the line (which means
374 * the line is empty or doesn't have a token followed
375 * by a space; neither is valid for a request or response), or
376 * the first character in the line is a space ( which isn't valid
377 * for a MSRP header.)
382 token_1_len = space_offset;
383 token_2_start = space_offset + 1;
384 space_offset = tvb_find_guint8(tvb, token_2_start, -1, ' ');
385 if (space_offset == -1) {
387 * There's no space after the second token, so we don't
388 * have a third token.
393 * Is the first token "MSRP"?
395 if (token_1_len == MSRP_HDR_LEN && tvb_strneql(tvb, 0, MSRP_HDR, MSRP_HDR_LEN) == 0){
396 /* This check can be made more strict but accept we do have MSRP for now */
404 * end-line = "-------" transact-id continuation-flag CRLF
405 * This code is modeled on the code in packet-multipart.c
408 find_end_line(tvbuff_t *tvb, gint start)
410 gint offset = start, next_offset, linelen;
412 while (tvb_length_remaining(tvb, offset) > 0) {
413 /* 'desegment' is FALSE so will set next_offset to beyond the end of
414 the buffer if no line ending is found */
415 linelen = tvb_find_line_end(tvb, offset, -1, &next_offset, FALSE);
419 if (tvb_strneql(tvb, next_offset, (const gchar *)"-------", 7) == 0)
421 offset = next_offset;
428 dissect_msrp_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
431 conversation_t* conversation;
433 if ( check_msrp_header(tvb)){
435 * TODO Set up conversation here
437 if (pinfo->fd->flags.visited){
438 /* Look for existing conversation */
439 conversation = find_conversation(pinfo->fd->num, &pinfo->src, &pinfo->dst, pinfo->ptype,
440 pinfo->srcport, pinfo->destport, 0);
441 /* Create new one if not found */
442 if (conversation == NULL){
443 conversation = conversation_new(pinfo->fd->num, &pinfo->src, &pinfo->dst,
444 pinfo->ptype, pinfo->srcport, pinfo->destport, 0);
446 conversation_set_dissector(conversation, msrp_handle);
449 offset = dissect_msrp(tvb, pinfo, tree);
455 /* Code to actually dissect the packets */
457 dissect_msrp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
460 gint next_offset = 0;
461 proto_item *ti, *th, *msrp_headers_item, *msrp_element_item;
462 proto_tree *msrp_tree, *reqresp_tree, *raw_tree, *msrp_hdr_tree, *msrp_end_tree;
463 proto_tree *msrp_element_tree, *msrp_data_tree;
470 gint token_4_start = 0;
471 guint token_4_len = 0;
472 gboolean is_msrp_response;
473 gint end_line_offset;
475 gint line_end_offset;
476 gint message_end_offset;
478 char *transaction_id_str = NULL;
485 gboolean have_body = FALSE;
486 gboolean found_match = FALSE;
487 gint content_type_len, content_type_parameter_str_len;
488 char *media_type_str = NULL;
489 char *media_type_str_lower_case = NULL;
490 char *content_type_parameter_str = NULL;
492 gint parameter_offset;
493 gint semi_colon_offset;
495 if ( !check_msrp_header(tvb)){
498 /* We have a MSRP header with at least three tokens
500 * Note that "tvb_find_line_end()" will return a value that
501 * is not longer than what's in the buffer, so the
502 * "tvb_get_ptr()" calls below won't throw exceptions. *
505 linelen = tvb_find_line_end(tvb, 0, -1, &next_offset, FALSE);
507 /* Find the first SP and skip the first token */
508 token_2_start = tvb_find_guint8(tvb, 0, linelen, ' ') + 1;
510 /* Work out 2nd token's length by finding next space */
511 space_offset = tvb_find_guint8(tvb, token_2_start, linelen-token_2_start, ' ');
512 token_2_len = space_offset - token_2_start;
514 /* Transaction ID found store it for later use */
515 transaction_id_str = tvb_get_ephemeral_string(tvb, token_2_start, token_2_len);
517 /* Look for another space in this line to indicate a 4th token */
518 token_3_start = space_offset + 1;
519 space_offset = tvb_find_guint8(tvb, token_3_start,linelen-token_3_start, ' ');
520 if ( space_offset == -1){
521 /* 3rd token runs to the end of the line */
522 token_3_len = linelen - token_3_start;
524 /* We have a fourth token */
525 token_3_len = space_offset - token_3_start;
526 token_4_start = space_offset + 1;
527 token_4_len = linelen - token_4_start;
531 * Yes, so this is either a msrp-request or msrp-response.
532 * To be a msrp-response, the second token must be
535 is_msrp_response = FALSE;
536 if (token_3_len == 3) {
537 if (isdigit(tvb_get_guint8(tvb, token_3_start)) &&
538 isdigit(tvb_get_guint8(tvb, token_3_start + 1)) &&
539 isdigit(tvb_get_guint8(tvb, token_3_start + 2))) {
540 is_msrp_response = TRUE;
544 /* Make entries in Protocol column and Info column on summary display */
545 if (check_col(pinfo->cinfo, COL_PROTOCOL))
546 col_set_str(pinfo->cinfo, COL_PROTOCOL, "MSRP");
547 if (is_msrp_response){
548 if (check_col(pinfo->cinfo, COL_INFO)) {
549 col_add_fstr(pinfo->cinfo, COL_INFO, "Response: %s ",
550 tvb_format_text(tvb, token_3_start, token_3_len));
553 col_append_fstr(pinfo->cinfo, COL_INFO, "%s ",
554 tvb_format_text(tvb, token_4_start, token_4_len));
556 col_append_fstr(pinfo->cinfo, COL_INFO, "Transaction ID: %s",
557 tvb_format_text(tvb, token_2_start, token_2_len));
560 if (check_col(pinfo->cinfo, COL_INFO)) {
561 proto_tree_add_text(tree, tvb, token_3_start, token_3_len,
562 "Col %s L=%u", tvb_format_text(tvb, token_3_start, token_3_len),token_3_len);
564 col_add_fstr(pinfo->cinfo, COL_INFO, "Request: %s ",
565 tvb_format_text(tvb, token_3_start, token_3_len));
567 col_append_fstr(pinfo->cinfo, COL_INFO, "Transaction ID: %s",
568 tvb_format_text(tvb, token_2_start, token_2_len));
572 /* Find the end line to be able to process the headers
573 * Note that in case of [content-stuff] headers and [content-stuff] is separated by CRLF
576 offset = next_offset;
577 end_line_offset = find_end_line(tvb,offset);
578 /* TODO if -1 (No end line found, is returned do something) */
579 end_line_len = tvb_find_line_end(tvb, end_line_offset, -1, &next_offset, FALSE);
580 message_end_offset = end_line_offset + end_line_len + 2;
584 ti = proto_tree_add_item(tree, proto_msrp, tvb, 0, message_end_offset, FALSE);
585 msrp_tree = proto_item_add_subtree(ti, ett_msrp);
587 if (is_msrp_response){
588 th = proto_tree_add_item(msrp_tree,hf_msrp_response_line,tvb,0,linelen,FALSE);
589 reqresp_tree = proto_item_add_subtree(th, ett_msrp_reqresp);
590 proto_tree_add_item(reqresp_tree,hf_msrp_transactionID,tvb,token_2_start,token_2_len,FALSE);
591 proto_tree_add_uint(reqresp_tree,hf_msrp_status_code,tvb,token_3_start,token_3_len,
592 atoi(tvb_get_ephemeral_string(tvb, token_3_start, token_3_len)));
595 th = proto_tree_add_item(msrp_tree,hf_msrp_request_line,tvb,0,linelen,FALSE);
596 reqresp_tree = proto_item_add_subtree(th, ett_msrp_reqresp);
597 proto_tree_add_item(reqresp_tree,hf_msrp_transactionID,tvb,token_2_start,token_2_len,FALSE);
598 proto_tree_add_item(reqresp_tree,hf_msrp_method,tvb,token_3_start,token_3_len,FALSE);
601 /* Conversation setup info */
602 if (global_msrp_show_setup_info)
604 show_setup_info(tvb, pinfo, msrp_tree);
608 msrp_headers_item = proto_tree_add_item(msrp_tree, hf_msrp_msg_hdr, tvb, offset,(end_line_offset - offset), FALSE);
609 msrp_hdr_tree = proto_item_add_subtree(msrp_headers_item, ett_msrp_hdr);
612 * Process the headers
614 while (tvb_reported_length_remaining(tvb, offset) > 0 && offset < end_line_offset ) {
615 /* 'desegment' is FALSE so will set next_offset to beyond the end of
616 the buffer if no line ending is found */
617 linelen = tvb_find_line_end(tvb, offset, -1, &next_offset, FALSE);
620 * This is a blank line separating the
621 * message header from the message body.
626 line_end_offset = offset + linelen;
627 colon_offset = tvb_find_guint8(tvb, offset, linelen, ':');
628 if (colon_offset == -1) {
630 * Malformed header - no colon after the name.
632 proto_tree_add_text(msrp_hdr_tree, tvb, offset,
633 next_offset - offset, "%s",
634 tvb_format_text(tvb, offset, linelen));
636 header_len = colon_offset - offset;
637 hf_index = msrp_is_known_msrp_header(tvb, offset, header_len);
639 if (hf_index == -1) {
640 proto_tree_add_text(msrp_hdr_tree, tvb,
641 offset, next_offset - offset, "%s",
642 tvb_format_text(tvb, offset, linelen));
645 * Skip whitespace after the colon.
647 value_offset = colon_offset + 1;
648 while (value_offset < line_end_offset &&
649 ((c = tvb_get_guint8(tvb, value_offset)) == ' ' ||
655 value_len = line_end_offset - value_offset;
656 value = tvb_get_ephemeral_string(tvb, value_offset,
660 * Add it to the protocol tree,
661 * but display the line as is.
663 msrp_element_item = proto_tree_add_string_format(msrp_hdr_tree,
664 hf_header_array[hf_index], tvb,
665 offset, next_offset - offset,
667 tvb_format_text(tvb, offset, linelen));
668 msrp_element_tree = proto_item_add_subtree( msrp_element_item, ett_msrp_element);
670 switch ( hf_index ) {
672 case MSRP_CONTENT_TYPE :
673 content_type_len = value_len;
674 semi_colon_offset = tvb_find_guint8(tvb, value_offset,linelen, ';');
675 if ( semi_colon_offset != -1) {
676 parameter_offset = semi_colon_offset +1;
678 * Skip whitespace after the semicolon.
680 while (parameter_offset < line_end_offset
681 && ((c = tvb_get_guint8(tvb, parameter_offset)) == ' '
684 content_type_len = semi_colon_offset - value_offset;
685 content_type_parameter_str_len = line_end_offset - parameter_offset;
686 content_type_parameter_str = tvb_get_ephemeral_string(tvb,
687 parameter_offset, content_type_parameter_str_len);
689 media_type_str = tvb_get_ephemeral_string(tvb, value_offset, content_type_len);
690 #if GLIB_MAJOR_VERSION < 2
691 media_type_str_lower_case = g_strdup(media_type_str);
692 g_strdown(media_type_str_lower_case);
694 media_type_str_lower_case = g_ascii_strdown(media_type_str, -1);
703 offset = next_offset;
708 * There's a message body starting at "next_offset".
709 * Set the length of the header item.
711 proto_item_set_end(msrp_headers_item, tvb, next_offset);
713 /* Create new tree & tvb for data */
714 next_tvb = tvb_new_subset(tvb, next_offset, -1, -1);
715 ti = proto_tree_add_item(msrp_tree, hf_msrp_data, tvb,
716 next_offset, -1, FALSE);
717 msrp_data_tree = proto_item_add_subtree(ti, ett_msrp_data);
719 /* give the content type parameters to sub dissectors */
721 if ( media_type_str_lower_case != NULL ) {
722 void *save_private_data = pinfo->private_data;
723 pinfo->private_data = content_type_parameter_str;
724 found_match = dissector_try_string(media_type_dissector_table,
725 media_type_str_lower_case,
728 g_free(media_type_str_lower_case);
729 pinfo->private_data = save_private_data;
730 /* If no match dump as text */
732 if ( found_match != TRUE )
735 while (tvb_offset_exists(next_tvb, offset)) {
736 tvb_find_line_end(next_tvb, offset, -1, &next_offset, FALSE);
737 linelen = next_offset - offset;
738 proto_tree_add_text(msrp_data_tree, next_tvb, offset, linelen,
739 "%s", tvb_format_text(next_tvb, offset, linelen));
740 offset = next_offset;
749 ti = proto_tree_add_item(msrp_tree,hf_msrp_end_line,tvb,end_line_offset,end_line_len,FALSE);
750 msrp_end_tree = proto_item_add_subtree(ti, ett_msrp_end_line);
752 proto_tree_add_item(msrp_end_tree,hf_msrp_transactionID,tvb,end_line_offset + 7,token_2_len,FALSE);
753 /* continuation-flag */
754 proto_tree_add_item(msrp_end_tree,hf_msrp_cnt_flg,tvb,end_line_offset+end_line_len-1,1,FALSE);
756 if (global_msrp_raw_text){
757 ti = proto_tree_add_text(tree, tvb, 0, -1,"Message Session Relay Protocol(as raw text)");
758 raw_tree = proto_item_add_subtree(ti, ett_msrp);
759 tvb_raw_text_add(tvb,raw_tree);
763 return message_end_offset;
764 /* return tvb_length(tvb); */
766 /* If this protocol has a sub-dissector call it here, see section 1.8 */
770 /* Register the protocol with Wireshark */
771 /* If this dissector uses sub-dissector registration add a registration routine.
772 This format is required because a script is used to find these routines and
773 create the code that calls these routines.
776 proto_reg_handoff_msrp(void)
778 msrp_handle = new_create_dissector_handle(dissect_msrp, proto_msrp);
779 dissector_add("tcp.port", 0, msrp_handle);
780 heur_dissector_add("tcp", dissect_msrp_heur, proto_msrp);
784 proto_register_msrp(void)
786 /* Setup protocol subtree array */
787 static gint *ett[] = {
798 /* Setup list of header fields */
799 static hf_register_info hf[] = {
800 { &hf_msrp_request_line,
801 { "Request Line", "msrp.request.line",
802 FT_STRING, BASE_NONE,NULL,0x0,
803 "Request Line", HFILL }
805 { &hf_msrp_response_line,
806 { "Response Line", "msrp.response.line",
807 FT_STRING, BASE_NONE,NULL,0x0,
808 "Response Line", HFILL }
810 { &hf_msrp_transactionID,
811 { "Transaction Id", "msrp.transaction.id",
812 FT_STRING, BASE_NONE,NULL,0x0,
813 "Transaction Id", HFILL }
816 { "Method", "msrp.method",
817 FT_STRING, BASE_NONE,NULL,0x0,
820 { &hf_msrp_status_code,
821 { "Status code", "msrp.status.code",
822 FT_UINT16, BASE_DEC,NULL,0x0,
823 "Status code", HFILL }
826 { "Message Header", "msrp.msg.hdr",
828 "Message Header", HFILL }
831 { "End Line", "msrp.end.line",
832 FT_STRING, BASE_NONE,NULL,0x0,
836 { "Continuation-flag", "msrp.cnt.flg",
837 FT_STRING, BASE_NONE,NULL,0x0,
838 "Continuation-flag", HFILL }
840 { &hf_header_array[MSRP_FROM_PATH],
841 { "From Path", "msrp.from.path",
842 FT_STRING, BASE_NONE,NULL,0x0,
845 { &hf_header_array[MSRP_TO_PATH],
846 { "To Path", "msrp.to.path",
847 FT_STRING, BASE_NONE,NULL,0x0,
850 { &hf_header_array[MSRP_MESSAGE_ID],
851 { "Message ID", "msrp.messageid",
852 FT_STRING, BASE_NONE,NULL,0x0,
853 "Message ID", HFILL }
855 { &hf_header_array[MSRP_SUCCESS_REPORT],
856 { "Success Report", "msrp.success.report",
857 FT_STRING, BASE_NONE,NULL,0x0,
858 "Success Report", HFILL }
860 { &hf_header_array[MSRP_FAILURE_REPORT],
861 { "Failure Report", "msrp.failure.report",
862 FT_STRING, BASE_NONE,NULL,0x0,
863 "Failure Report", HFILL }
865 { &hf_header_array[MSRP_BYTE_RANGE],
866 { "Byte Range", "msrp.byte.range",
867 FT_STRING, BASE_NONE,NULL,0x0,
868 "Byte Range", HFILL }
870 { &hf_header_array[MSRP_STATUS],
871 { "Status", "msrp.status",
872 FT_STRING, BASE_NONE,NULL,0x0,
875 { &hf_header_array[MSRP_CONTENT_TYPE],
876 { "Content-Type", "msrp.content.type",
877 FT_STRING, BASE_NONE,NULL,0x0,
878 "Content-Type", HFILL }
880 { &hf_header_array[MSRP_CONTENT_ID],
881 { "Content-ID", "msrp.content.id",
882 FT_STRING, BASE_NONE,NULL,0x0,
883 "Content-ID", HFILL }
885 { &hf_header_array[MSRP_CONTENT_DISCRIPTION],
886 { "Content-Description", "msrp.content.description",
887 FT_STRING, BASE_NONE,NULL,0x0,
888 "Content-Description", HFILL }
890 { &hf_header_array[MSRP_CONTENT_DISPOSITION],
891 { "Content-Disposition", "msrp.content.disposition",
892 FT_STRING, BASE_NONE,NULL,0x0,
893 "Content-Disposition", HFILL }
895 { &hf_header_array[MSRP_USE_PATH],
896 { "Use-Path", "msrp.use.path",
897 FT_STRING, BASE_NONE,NULL,0x0,
900 { &hf_header_array[MSRP_WWW_AUTHENTICATE],
901 { "WWW-Authenticate", "msrp.www.authenticate",
902 FT_STRING, BASE_NONE,NULL,0x0,
903 "WWW-Authenticate", HFILL }
905 { &hf_header_array[MSRP_AUTHORIZATION],
906 { "Authorization", "msrp.authorization",
907 FT_STRING, BASE_NONE,NULL,0x0,
908 "Authorization", HFILL }
910 { &hf_header_array[MSRP_AUTHENTICATION_INFO],
911 { "Authentication-Info", "msrp.authentication.info",
912 FT_STRING, BASE_NONE,NULL,0x0,
913 "Authentication-Info", HFILL }
916 { "Data", "msrp.data",
917 FT_STRING, BASE_NONE, NULL, 0x0,
921 { "Stream setup", "msrp.setup",
922 FT_STRING, BASE_NONE, NULL, 0x0,
923 "Stream setup, method and frame number", HFILL}
925 { &hf_msrp_setup_frame,
926 { "Setup frame", "msrp.setup-frame",
927 FT_FRAMENUM, BASE_NONE, NULL, 0x0,
928 "Frame that set up this stream", HFILL}
930 { &hf_msrp_setup_method,
931 { "Setup Method", "msrp.setup-method",
932 FT_STRING, BASE_NONE, NULL, 0x0,
933 "Method used to set up this stream", HFILL}
937 module_t *msrp_module;
938 /* Register the protocol name and description */
939 proto_msrp = proto_register_protocol("Message Session Relay Protocol","MSRP", "msrp");
941 /* Required function calls to register the header fields and subtrees used */
942 proto_register_field_array(proto_msrp, hf, array_length(hf));
943 proto_register_subtree_array(ett, array_length(ett));
945 media_type_dissector_table = find_dissector_table("media_type");
947 msrp_module = prefs_register_protocol(proto_msrp, NULL);
949 prefs_register_bool_preference(msrp_module, "display_raw_text",
950 "Display raw text for MSRP message",
951 "Specifies that the raw text of the "
952 "MSRP message should be displayed "
953 "in addition to the dissection tree",
954 &global_msrp_raw_text);
956 prefs_register_bool_preference(msrp_module, "show_setup_info",
957 "Show stream setup information",
958 "Where available, show which protocol and frame caused "
959 "this MSRP stream to be created",
960 &global_msrp_show_setup_info);
964 * Register the dissector by name, so other dissectors can
965 * grab it by name rather than just referring to it directly.
967 new_register_dissector("msrp", dissect_msrp, proto_msrp);