diff options
author | etxrab <etxrab@f5534014-38df-0310-8fa8-9805f1628bb7> | 2005-05-30 18:39:39 +0000 |
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committer | etxrab <etxrab@f5534014-38df-0310-8fa8-9805f1628bb7> | 2005-05-30 18:39:39 +0000 |
commit | e19331ef7a58282902858038db7b9cf2bbc2c648 (patch) | |
tree | 35e1911a0562857ae2ad5942798a78800a8e8b41 /epan/dissectors/packet-msrp.c | |
parent | 49c96d050bcd137f60a0976dd881c0a74e22d9d9 (diff) |
Add dissection of MSRP
http://www.ietf.org/internet-drafts/draft-ietf-simple-message-sessions-10.txt
git-svn-id: http://anonsvn.wireshark.org/wireshark/trunk@14491 f5534014-38df-0310-8fa8-9805f1628bb7
Diffstat (limited to 'epan/dissectors/packet-msrp.c')
-rw-r--r-- | epan/dissectors/packet-msrp.c | 741 |
1 files changed, 741 insertions, 0 deletions
diff --git a/epan/dissectors/packet-msrp.c b/epan/dissectors/packet-msrp.c new file mode 100644 index 0000000000..cf6771d8a8 --- /dev/null +++ b/epan/dissectors/packet-msrp.c @@ -0,0 +1,741 @@ +/* packet-msrp.c + * Routines for Message Session Relay Protocol(MSRP) dissection + * Copyright 2005, Anders Broman <anders.broman[at]ericsson.com> + * + * $Id$ + * + * Ethereal - Network traffic analyzer + * By Gerald Combs <gerald@ethereal.com> + * 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. + * + * References: + * http://www.ietf.org/internet-drafts/draft-ietf-simple-message-sessions-10.txt + */ + +#ifdef HAVE_CONFIG_H +# include "config.h" +#endif + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include <glib.h> +#include <epan/conversation.h> + +#ifdef NEED_SNPRINTF_H +# include "snprintf.h" +#endif + +#include <epan/packet.h> +#include "prefs.h" + +#define TCP_PORT_MSRP 0 + +#define MSRP_HDR "MSRP" +#define MSRP_HDR_LEN (strlen (MSRP_HDR)) + +/* Initialize the protocol and registered fields */ +static int proto_msrp = -1; + +/* Initialize the subtree pointers */ +static int ett_msrp = -1; +static int ett_raw_text = -1; +static int ett_msrp_reqresp = -1; +static int ett_msrp_hdr = -1; +static int ett_msrp_element = -1; +static int ett_msrp_data = -1; +static int ett_msrp_end_line = -1; + +static int hf_msrp_response_line = -1; +static int hf_msrp_request_line = -1; +static int hf_msrp_transactionID = -1; +static int hf_msrp_method = -1; +static int hf_msrp_status_code = -1; +static int hf_msrp_msg_hdr = -1; +static int hf_msrp_end_line = -1; +static int hf_msrp_cnt_flg = -1; + +typedef struct { + char *name; +} msrp_header_t; + +static const msrp_header_t msrp_headers[] = { + { "Unknown-header"}, + { "From-Path"}, /* 1 */ + { "To-Path"}, /* 2 */ + { "Message-ID"}, /* 3 */ + { "Success-Report"}, /* 4 */ + { "Byte-Range"}, /* 5 */ + { "Status"}, /* 6 */ + { "Content-Type"}, /* 7 */ + { "Content-ID"}, /* 8 */ + { "Content-Description"}, /* 9 */ + { "Content-Disposition"}, /* 10 */ +}; + +static gint hf_header_array[] = { + -1, /* 0"Unknown-header" - Pad so that the real headers start at index 1 */ + -1, /* 1"From-Path */ + -1, /* 2"To-Path */ + -1, /* 3"Message-ID" */ + -1, /* 4"Success-Report" */ + -1, /* 5"Byte-Range" */ + -1, /* 6"Status" */ + -1, /* 7"Content-Type" */ + -1, /* 8"Content-ID" */ + -1, /* 9"Content-Description" */ + -1, /* 10"Content-Disposition" */ +}; + +#define MSRP_FROM_PATH 1 +#define MSRP_TO_PATH 2 +#define MSRP_MESSAGE_ID 3 +#define MSRP_SUCCESS_REPORT 4 +#define MSRP_BYTE_RANGE 5 +#define MSRP_STATUS 6 +#define MSRP_CONTENT_TYPE 7 +#define MSRP_CONTENT_ID 8 +#define MSRP_CONTENT_DISCRIPTION 9 +#define MSRP_CONTENT_DISPOSITION 10 + +dissector_handle_t msrp_handle; +gboolean global_msrp_raw_text = TRUE; + +/* MSRP content type and internet media type used by other dissectors + * are the same. List of media types from IANA at: + * http://www.iana.org/assignments/media-types/index.html */ +static dissector_table_t media_type_dissector_table; + +static int dissect_msrp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree); + + +/* Returns index of headers */ +static gint msrp_is_known_msrp_header(tvbuff_t *tvb, int offset, guint header_len) +{ + guint i; + + for (i = 1; i < array_length(msrp_headers); i++) { + if (header_len == strlen(msrp_headers[i].name) && + tvb_strncaseeql(tvb, offset, msrp_headers[i].name, header_len) == 0) + return i; + } + + return -1; +} + + +/* + * Display the entire message as raw text. + */ +static void +tvb_raw_text_add(tvbuff_t *tvb, proto_tree *tree) +{ + int offset, next_offset, linelen; + + + offset = 0; + + while (tvb_offset_exists(tvb, offset)) { + tvb_find_line_end(tvb, offset, -1, &next_offset, FALSE); + linelen = next_offset - offset; + if(tree) { + proto_tree_add_text(tree, tvb, offset, linelen, + "%s", tvb_format_text(tvb, offset, linelen)); + } + offset = next_offset; + } +} +/* This code is modeled on the code in packet-sip.c + * ABNF code for the MSRP header: + * The following syntax specification uses the augmented Backus-Naur + * Form (BNF) as described in RFC-2234 [6]. + * + * + * msrp-req-or-resp = msrp-request / msrp-response + * msrp-request = req-start headers [content-stuff] end-line + * msrp-response = resp-start headers end-line + * + * req-start = pMSRP SP transact-id SP method CRLF + * resp-start = pMSRP SP transact-id SP status-code [SP phrase] CRLF + * phrase = utf8text + * + * pMSRP = %x4D.53.52.50 ; MSRP in caps + * transact-id = ident + * method = mSEND / mREPORT / other-method + * mSEND = %x53.45.4e.44 ; SEND in caps + * mREPORT = %x52.45.50.4f.52.54; REPORT in caps + * other-method = 1*UPALPHA + * Examples: + * "MSRP 1234 SEND(CRLF)" + * "MSRP 1234 200 OK(CRLF) + */ +static gboolean +check_msrp_header(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + gint offset = 0; + gint linelen; + gint space_offset; + gint next_offset = 0; + guint token_1_len; + gint token_2_start; + + /* + * Note that "tvb_find_line_end()" will return a value that + * is not longer than what's in the buffer, so the + * "tvb_get_ptr()" calls below won't throw exceptions. * + */ + offset = 0; + linelen = tvb_find_line_end(tvb, 0, -1, &next_offset, FALSE); + /* Find the first SP */ + space_offset = tvb_find_guint8(tvb, 0, -1, ' '); + + if (space_offset <= 0) { + /* + * Either there's no space in the line (which means + * the line is empty or doesn't have a token followed + * by a space; neither is valid for a request or response), or + * the first character in the line is a space ( which isn't valid + * for a MSRP header.) + */ + return FALSE; + } + + token_1_len = space_offset; + token_2_start = space_offset + 1; + space_offset = tvb_find_guint8(tvb, token_2_start, -1, ' '); + if (space_offset == -1) { + /* + * There's no space after the second token, so we don't + * have a third token. + */ + return FALSE; + } + /* + * Is the first token "MSRP"? + */ + if (token_1_len == MSRP_HDR_LEN && tvb_strneql(tvb, 0, MSRP_HDR, MSRP_HDR_LEN) == 0){ + /* This check can be made more strict but accept we do have MSRP for now */ + return TRUE; + + } + return FALSE; +} +/* ABNF of line-end: + * end-line = "-------" transact-id continuation-flag CRLF + * This code is modeled on the code in packet-multipart.c + */ +static int +find_end_line(tvbuff_t *tvb, gint start) +{ + gint offset = start, next_offset, linelen; + + while (tvb_length_remaining(tvb, offset) > 0) { + linelen = tvb_find_line_end(tvb, offset, -1, &next_offset, FALSE); + if (linelen == -1) { + return -1; + } + if (tvb_strneql(tvb, next_offset, (const guint8 *)"-------", 7) == 0) + return next_offset; + offset = next_offset; + } + + return -1; +} + +static gboolean +dissect_msrp_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + gint offset = 0; + conversation_t* conversation; + + if ( check_msrp_header(tvb, pinfo, tree)){ + /* + * TODO Set up conversation here + */ + if (pinfo->fd->flags.visited){ + conversation = find_conversation(pinfo->fd->num, &pinfo->src, &pinfo->dst, pinfo->ptype, + pinfo->srcport, pinfo->destport, 0); + if (conversation == NULL){ + conversation = conversation_new(pinfo->fd->num, &pinfo->src, &pinfo->dst, + pinfo->ptype, pinfo->srcport, pinfo->destport, 0); + /* Set dissector */ + conversation_set_dissector(conversation, msrp_handle); + } + } + offset = dissect_msrp(tvb, pinfo, tree); + return TRUE; + } + return FALSE; +} + +/* Code to actually dissect the packets */ +static int +dissect_msrp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree) +{ + gint offset = 0; + gint next_offset = 0; + proto_item *ti, *th, *msrp_headers_item, *msrp_element_item; + proto_tree *msrp_tree, *reqresp_tree, *raw_tree, *msrp_hdr_tree, *msrp_end_tree; + proto_tree *msrp_element_tree, *msrp_data_tree; + gint linelen; + gint space_offset; + gint token_2_start; + guint token_2_len; + gint token_3_start; + guint token_3_len; + gint token_4_start; + guint token_4_len = 0; + gboolean is_msrp_response; + gint end_line_offset; + gint end_line_len; + gint line_end_offset; + gint message_end_offset; + gint colon_offset; + char *transaction_id_str = NULL; + gint header_len; + gint hf_index; + gint value_offset; + guchar c; + size_t value_len; + char *value; + gboolean have_body = FALSE; + gboolean found_match = FALSE; + gint content_type_len, content_type_parameter_str_len; + char *media_type_str = NULL; + char *media_type_str_lower_case = NULL; + char *content_type_parameter_str = NULL; + tvbuff_t *next_tvb; + gint parameter_offset; + gint semi_colon_offset; + + if ( !check_msrp_header(tvb, pinfo, tree)){ + return 0; + } + /* We have a MSRP header with at least three tokens + * + * Note that "tvb_find_line_end()" will return a value that + * is not longer than what's in the buffer, so the + * "tvb_get_ptr()" calls below won't throw exceptions. * + */ + offset = 0; + linelen = tvb_find_line_end(tvb, 0, -1, &next_offset, FALSE); + /* Find the first SP and skip the first token */ + token_2_start = tvb_find_guint8(tvb, 0, linelen, ' ') + 1; + + space_offset = tvb_find_guint8(tvb, token_2_start, linelen, ' '); + token_2_len = space_offset - token_2_start; + /* Transaction ID found store it for later use */ + transaction_id_str = tvb_get_string(tvb, token_2_start, token_2_len); + + token_3_start = space_offset + 1; + space_offset = tvb_find_guint8(tvb, token_3_start,linelen, ' '); + if ( space_offset == -1){ + token_3_len = linelen - token_3_start; + }else{ + /* We have a fourth token */ + token_3_len = space_offset - token_3_start; + token_4_start = space_offset + 1; + token_4_len = linelen - token_4_start; + } + + /* + * Yes, so this is either a msrp-request or msrp-response. + * To be a msrp-response, the second token must be + * a 3-digit number. + */ + is_msrp_response = FALSE; + if (token_3_len == 3) { + if (isdigit(tvb_get_guint8(tvb, token_3_start)) && + isdigit(tvb_get_guint8(tvb, token_3_start + 1)) && + isdigit(tvb_get_guint8(tvb, token_3_start + 2))) { + is_msrp_response = TRUE; + } + } + + /* Make entries in Protocol column and Info column on summary display */ + if (check_col(pinfo->cinfo, COL_PROTOCOL)) + col_set_str(pinfo->cinfo, COL_PROTOCOL, "MSRP"); + if (is_msrp_response){ + if (check_col(pinfo->cinfo, COL_INFO)) { + col_add_fstr(pinfo->cinfo, COL_INFO, "Response: %s ", + tvb_format_text(tvb, token_3_start, token_3_len)); + + if (token_4_len ) + col_append_fstr(pinfo->cinfo, COL_INFO, "%s ", + tvb_format_text(tvb, token_4_start, token_4_len)); + + col_append_fstr(pinfo->cinfo, COL_INFO, "Transaktion ID: %s", + tvb_format_text(tvb, token_2_start, token_2_len)); + } + }else{ + if (check_col(pinfo->cinfo, COL_INFO)) { + proto_tree_add_text(tree, tvb, token_3_start, token_3_len, + "Col %s L=%u", tvb_format_text(tvb, token_3_start, token_3_len),token_3_len); + + col_add_fstr(pinfo->cinfo, COL_INFO, "Request: %s ", + tvb_format_text(tvb, token_3_start, token_3_len)); + + col_append_fstr(pinfo->cinfo, COL_INFO, "Transaktion ID: %s", + tvb_format_text(tvb, token_2_start, token_2_len)); + } + } + + /* Find the end line to be able to process the headers + * Note that in case of [content-stuff] headers and [content-stuff] is separated by CRLF + */ + + offset = next_offset; + end_line_offset = find_end_line(tvb,offset); + /* TODO if -1 (No end line found, is returned do something) */ + end_line_len = tvb_find_line_end(tvb, end_line_offset, -1, &next_offset, FALSE); + message_end_offset = end_line_offset + end_line_len + 2; + + + if (tree) { + ti = proto_tree_add_item(tree, proto_msrp, tvb, 0, message_end_offset, FALSE); + msrp_tree = proto_item_add_subtree(ti, ett_msrp); + + if (is_msrp_response){ + th = proto_tree_add_item(msrp_tree,hf_msrp_response_line,tvb,0,linelen,FALSE); + reqresp_tree = proto_item_add_subtree(th, ett_msrp_reqresp); + proto_tree_add_item(reqresp_tree,hf_msrp_transactionID,tvb,token_2_start,token_2_len,FALSE); + proto_tree_add_item(reqresp_tree,hf_msrp_status_code,tvb,token_3_start,token_3_len,FALSE); + + }else{ + th = proto_tree_add_item(msrp_tree,hf_msrp_request_line,tvb,0,linelen,FALSE); + reqresp_tree = proto_item_add_subtree(th, ett_msrp_reqresp); + proto_tree_add_item(reqresp_tree,hf_msrp_transactionID,tvb,token_2_start,token_2_len,FALSE); + proto_tree_add_item(reqresp_tree,hf_msrp_method,tvb,token_3_start,token_3_len,FALSE); + } + + /* Headers */ + msrp_headers_item = proto_tree_add_item(msrp_tree, hf_msrp_msg_hdr, tvb, offset,(end_line_offset - offset), FALSE); + msrp_hdr_tree = proto_item_add_subtree(msrp_headers_item, ett_msrp_hdr); + + /* + * Process the headers + */ + while (tvb_reported_length_remaining(tvb, offset) > 0 && offset < end_line_offset ) { + + linelen = tvb_find_line_end(tvb, offset, -1, &next_offset, FALSE); + if (linelen == 0) { + /* + * This is a blank line separating the + * message header from the message body. + */ + have_body = TRUE; + break; + } + line_end_offset = offset + linelen; + colon_offset = tvb_find_guint8(tvb, offset, linelen, ':'); + if (colon_offset == -1) { + /* + * Malformed header - no colon after the name. + */ + proto_tree_add_text(msrp_hdr_tree, tvb, offset, + next_offset - offset, "%s", + tvb_format_text(tvb, offset, linelen)); + } else { + header_len = colon_offset - offset; + hf_index = msrp_is_known_msrp_header(tvb, offset, header_len); + + if (hf_index == -1) { + proto_tree_add_text(msrp_hdr_tree, tvb, + offset, next_offset - offset, "%s", + tvb_format_text(tvb, offset, linelen)); + } else { + /* + * Skip whitespace after the colon. + */ + value_offset = colon_offset + 1; + while (value_offset < line_end_offset && + ((c = tvb_get_guint8(tvb, value_offset)) == ' ' || + c == '\t')) + value_offset++; + /* + * Fetch the value. + */ + value_len = line_end_offset - value_offset; + value = tvb_get_string(tvb, value_offset, + value_len); + + /* + * Add it to the protocol tree, + * but display the line as is. + */ + msrp_element_item = proto_tree_add_string_format(msrp_hdr_tree, + hf_header_array[hf_index], tvb, + offset, next_offset - offset, + value, "%s", + tvb_format_text(tvb, offset, linelen)); + msrp_element_tree = proto_item_add_subtree( msrp_element_item, ett_msrp_element); + + switch ( hf_index ) { + + case MSRP_CONTENT_TYPE : + content_type_len = value_len; + semi_colon_offset = tvb_find_guint8(tvb, value_offset,linelen, ';'); + if ( semi_colon_offset != -1) { + parameter_offset = semi_colon_offset +1; + /* + * Skip whitespace after the semicolon. + */ + while (parameter_offset < line_end_offset + && ((c = tvb_get_guint8(tvb, parameter_offset)) == ' ' + || c == '\t')) + parameter_offset++; + content_type_len = semi_colon_offset - value_offset; + content_type_parameter_str_len = line_end_offset - parameter_offset; + content_type_parameter_str = tvb_get_string(tvb, parameter_offset, + content_type_parameter_str_len); + } + media_type_str = tvb_get_string(tvb, value_offset, content_type_len); +#if GLIB_MAJOR_VERSION < 2 + media_type_str_lower_case = g_strdup(media_type_str); + g_strdown(media_type_str_lower_case); +#else + media_type_str_lower_case = g_ascii_strdown(media_type_str, -1); +#endif + g_free(media_type_str); + break; + + default: + break; + } + g_free(value); + } + } + offset = next_offset; + }/* End while */ + + if ( have_body ){ + /* + * There's a message body starting at "next_offset". + * Set the length of the header item. + */ + proto_item_set_end(msrp_headers_item, tvb, next_offset); + next_tvb = tvb_new_subset(tvb, next_offset, -1, -1); + ti = proto_tree_add_text(msrp_tree, next_tvb, 0, -1, + "Data"); + msrp_data_tree = proto_item_add_subtree(ti, ett_msrp_data); + + /* give the content type parameters to sub dissectors */ + + if ( media_type_str_lower_case != NULL ) { + void *save_private_data = pinfo->private_data; + pinfo->private_data = content_type_parameter_str; + found_match = dissector_try_string(media_type_dissector_table, + media_type_str_lower_case, + next_tvb, pinfo, + msrp_data_tree); + g_free(media_type_str_lower_case); + pinfo->private_data = save_private_data; + /* If no match dump as text */ + } + g_free(content_type_parameter_str); + if ( found_match != TRUE ) + { + offset = 0; + while (tvb_offset_exists(next_tvb, offset)) { + tvb_find_line_end(next_tvb, offset, -1, &next_offset, FALSE); + linelen = next_offset - offset; + proto_tree_add_text(msrp_data_tree, next_tvb, offset, linelen, + "%s", tvb_format_text(next_tvb, offset, linelen)); + offset = next_offset; + }/* end while */ + } + + } + + + + /* End line */ + ti = proto_tree_add_item(msrp_tree,hf_msrp_end_line,tvb,end_line_offset,end_line_len,FALSE); + msrp_end_tree = proto_item_add_subtree(ti, ett_msrp_end_line); + + proto_tree_add_item(msrp_end_tree,hf_msrp_transactionID,tvb,end_line_offset + 7,token_2_len,FALSE); + /* continuation-flag */ + proto_tree_add_item(msrp_end_tree,hf_msrp_cnt_flg,tvb,end_line_offset+end_line_len-1,1,FALSE); + + if (global_msrp_raw_text){ + ti = proto_tree_add_text(tree, tvb, 0, -1,"Message Session Relay Protocol(as raw text)"); + raw_tree = proto_item_add_subtree(ti, ett_msrp); + tvb_raw_text_add(tvb,raw_tree); + } + + }/* if tree */ + return message_end_offset; + /* return tvb_length(tvb); */ + +/* If this protocol has a sub-dissector call it here, see section 1.8 */ +} + + +/* Register the protocol with Ethereal */ +/* If this dissector uses sub-dissector registration add a registration routine. + This format is required because a script is used to find these routines and + create the code that calls these routines. +*/ +void +proto_reg_handoff_msrp(void) +{ + + msrp_handle = new_create_dissector_handle(dissect_msrp, proto_msrp); + dissector_add("tcp.port", 0, msrp_handle); + heur_dissector_add("tcp", dissect_msrp_heur, proto_msrp); +} + +void +proto_register_msrp(void) +{ + +/* Setup protocol subtree array */ + static gint *ett[] = { + &ett_msrp, + &ett_raw_text, + &ett_msrp_reqresp, + &ett_msrp_hdr, + &ett_msrp_element, + &ett_msrp_data, + &ett_msrp_end_line, + }; + + /* Setup list of header fields */ + static hf_register_info hf[] = { + { &hf_msrp_request_line, + { "Request Line", "msrp.request.line", + FT_STRING, BASE_NONE,NULL,0x0, + "Request Line", HFILL } + }, + { &hf_msrp_response_line, + { "Response Line", "msrp.response.line", + FT_STRING, BASE_NONE,NULL,0x0, + "Response Line", HFILL } + }, + { &hf_msrp_transactionID, + { "Transaction Id", "msrp.transaction.id", + FT_STRING, BASE_NONE,NULL,0x0, + "Transaction Id", HFILL } + }, + { &hf_msrp_method, + { "Method", "msrp.method", + FT_STRING, BASE_NONE,NULL,0x0, + "Method", HFILL } + }, + { &hf_msrp_status_code, + { "Status code", "msrp.msg.hdr", + FT_STRING, BASE_NONE,NULL,0x0, + "Message Heade", HFILL } + }, + { &hf_msrp_msg_hdr, + { "Message Header", "msrp.end.line", + FT_NONE, 0,NULL,0x0, + "Message Header", HFILL } + }, + { &hf_msrp_end_line, + { "End Line", "msrp.end.line", + FT_STRING, BASE_NONE,NULL,0x0, + "End Line", HFILL } + }, + { &hf_msrp_cnt_flg, + { "Continuation-flag", "msrp.cnt.flg", + FT_STRING, BASE_NONE,NULL,0x0, + "Continuation-flag", HFILL } + }, + { &hf_header_array[MSRP_FROM_PATH], + { "From Path", "msrp.from.path", + FT_STRING, BASE_NONE,NULL,0x0, + "From Path", HFILL } + }, + { &hf_header_array[MSRP_TO_PATH], + { "To Path", "msrp.to.path", + FT_STRING, BASE_NONE,NULL,0x0, + "To Path", HFILL } + }, + { &hf_header_array[MSRP_MESSAGE_ID], + { "Message ID", "msrp.messageid", + FT_STRING, BASE_NONE,NULL,0x0, + "Message ID", HFILL } + }, + { &hf_header_array[MSRP_SUCCESS_REPORT], + { "Success Report", "msrp.success.report", + FT_STRING, BASE_NONE,NULL,0x0, + "Success Report", HFILL } + }, + { &hf_header_array[MSRP_BYTE_RANGE], + { "Byte Range", "msrp.byte.range", + FT_STRING, BASE_NONE,NULL,0x0, + "Byte Range", HFILL } + }, + { &hf_header_array[MSRP_STATUS], + { "Status", "msrp.status", + FT_STRING, BASE_NONE,NULL,0x0, + "Status", HFILL } + }, + { &hf_header_array[MSRP_CONTENT_TYPE], + { "Content-Type", "msrp.content.type", + FT_STRING, BASE_NONE,NULL,0x0, + "Content-Type", HFILL } + }, + { &hf_header_array[MSRP_CONTENT_ID], + { "Content-ID", "msrp.content.id", + FT_STRING, BASE_NONE,NULL,0x0, + "Content-ID", HFILL } + }, + { &hf_header_array[MSRP_CONTENT_DISCRIPTION], + { "Content-Description", "msrp.content.description", + FT_STRING, BASE_NONE,NULL,0x0, + "Content-Description", HFILL } + }, + { &hf_header_array[MSRP_CONTENT_DISPOSITION], + { "Content-Disposition", "msrp.content.disposition", + FT_STRING, BASE_NONE,NULL,0x0, + "Content-Disposition", HFILL } + }, + }; + + module_t *msrp_module; +/* Register the protocol name and description */ + proto_msrp = proto_register_protocol("Message Session Relay Protocol","MSRP", "msrp"); + +/* Required function calls to register the header fields and subtrees used */ + proto_register_field_array(proto_msrp, hf, array_length(hf)); + proto_register_subtree_array(ett, array_length(ett)); + + media_type_dissector_table = find_dissector_table("media_type"); + + msrp_module = prefs_register_protocol(proto_msrp, NULL); + + prefs_register_bool_preference(msrp_module, "display_raw_text", + "Display raw text for MSRP message", + "Specifies that the raw text of the " + "MSRP message should be displayed " + "in addition to the dissection tree", + &global_msrp_raw_text); + + /* + * Register the dissector by name, so other dissectors can + * grab it by name rather than just referring to it directly + * (you can't refer to it directly from a plugin dissector + * on Windows without stuffing it into the Big Transfer Vector). + */ + register_dissector("msrp", dissect_msrp, proto_msrp); + +} + + |