960 lines
25 KiB
C
960 lines
25 KiB
C
/* packet-rtpproxy.c
|
|
* RTPproxy command protocol dissector
|
|
* Copyright 2013, Peter Lemenkov <lemenkov@gmail.com>
|
|
*
|
|
* This dissector tries to dissect rtpproxy control protocol. Please visit this
|
|
* link for brief details on the command format:
|
|
*
|
|
* http://www.rtpproxy.org/wiki/RTPproxy/Protocol
|
|
*
|
|
* $Id$
|
|
*
|
|
* Wireshark - Network traffic analyzer
|
|
* By Gerald Combs <gerald@wireshark.org>
|
|
* Copyright 1999 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <ctype.h>
|
|
|
|
#include <epan/packet.h>
|
|
#include <epan/prefs.h>
|
|
#include <epan/conversation.h>
|
|
|
|
static int proto_rtpproxy = -1;
|
|
|
|
static int hf_rtpproxy_cookie = -1;
|
|
static int hf_rtpproxy_error = -1;
|
|
static int hf_rtpproxy_status = -1;
|
|
static int hf_rtpproxy_ok = -1;
|
|
static int hf_rtpproxy_ipv4 = -1;
|
|
static int hf_rtpproxy_ipv6 = -1;
|
|
static int hf_rtpproxy_port = -1;
|
|
static int hf_rtpproxy_lf = -1;
|
|
static int hf_rtpproxy_request = -1;
|
|
static int hf_rtpproxy_command = -1;
|
|
static int hf_rtpproxy_command_parameters = -1;
|
|
static int hf_rtpproxy_callid = -1;
|
|
static int hf_rtpproxy_copy_target = -1;
|
|
static int hf_rtpproxy_playback_filename = -1;
|
|
static int hf_rtpproxy_playback_codec = -1;
|
|
static int hf_rtpproxy_notify = -1;
|
|
static int hf_rtpproxy_notify_ipv4 = -1;
|
|
static int hf_rtpproxy_notify_port = -1;
|
|
static int hf_rtpproxy_notify_tag = -1;
|
|
static int hf_rtpproxy_tag = -1;
|
|
static int hf_rtpproxy_mediaid = -1;
|
|
static int hf_rtpproxy_reply = -1;
|
|
static int hf_rtpproxy_version_request = -1;
|
|
static int hf_rtpproxy_version_supported = -1;
|
|
|
|
/* Request/response tracking */
|
|
static int hf_rtpproxy_request_in = -1;
|
|
static int hf_rtpproxy_response_in = -1;
|
|
static int hf_rtpproxy_response_time = -1;
|
|
|
|
typedef struct _rtpproxy_info {
|
|
guint32 req_frame;
|
|
guint32 resp_frame;
|
|
nstime_t req_time;
|
|
} rtpproxy_info_t;
|
|
|
|
typedef struct _rtpproxy_conv_info {
|
|
wmem_tree_t *trans;
|
|
} rtpproxy_conv_info_t;
|
|
|
|
|
|
static const string_string versiontypenames[] = {
|
|
{ "20040107", "Basic RTP proxy functionality" },
|
|
{ "20050322", "Support for multiple RTP streams and MOH" },
|
|
{ "20060704", "Support for extra parameter in the V command" },
|
|
{ "20071116", "Support for RTP re-packetization" },
|
|
{ "20071218", "Support for forking (copying) RTP stream" },
|
|
{ "20080403", "Support for RTP statistics querying" },
|
|
{ "20081102", "Support for setting codecs in the update/lookup command" },
|
|
{ "20081224", "Support for session timeout notifications" },
|
|
{ "20090810", "Support for automatic bridging" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string commandtypenames[] = {
|
|
{ 'V', "Handshake/Ping" },
|
|
{ 'v', "Handshake/Ping" },
|
|
{ 'U', "Offer/Update" },
|
|
{ 'u', "Offer/Update" },
|
|
{ 'L', "Answer/Lookup" },
|
|
{ 'l', "Answer/Lookup" },
|
|
{ 'I', "Information"},
|
|
{ 'i', "Information"},
|
|
{ 'X', "Close all active sessions"},
|
|
{ 'x', "Close all active sessions"},
|
|
{ 'D', "Delete an active session (Bye/Cancel/Error)"},
|
|
{ 'd', "Delete an active session (Bye/Cancel/Error)"},
|
|
{ 'P', "Start playback (music-on-hold)"},
|
|
{ 'p', "Start playback (music-on-hold)"},
|
|
{ 'S', "Stop playback (music-on-hold)"},
|
|
{ 's', "Stop playback (music-on-hold)"},
|
|
{ 'R', "Start recording"},
|
|
{ 'r', "Start recording"},
|
|
{ 'C', "Copy stream"},
|
|
{ 'c', "Copy stream"},
|
|
{ 'Q', "Query info about a session"},
|
|
{ 'q', "Query info about a session"},
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string oktypenames[] = {
|
|
{ '0', "Ok"},
|
|
{ '1', "Version Supported"},
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const string_string errortypenames[] = {
|
|
{ "E0", "Syntax error" },
|
|
{ "E1", "Syntax error" },
|
|
{ "E2", "Syntax error" },
|
|
{ "E3", "Unknown command" },
|
|
{ "E4", "Syntax error" },
|
|
{ "E5", "Out of memory" },
|
|
{ "E6", "<no description>" },
|
|
{ "E7", "Software error (can't create listener)" },
|
|
{ "E8", "Not Found" },
|
|
{ "E10", "Software error (can't create listener)" },
|
|
{ "E11", "Out of memory" },
|
|
{ "E12", "Out of memory" },
|
|
{ "E13", "Out of memory" },
|
|
{ "E14", "Out of memory" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static const value_string flowcontroltypenames[] = {
|
|
{ '\n', "Yes"},
|
|
{ 0, NULL }
|
|
};
|
|
|
|
static gint ett_rtpproxy = -1;
|
|
|
|
static gint ett_rtpproxy_request = -1;
|
|
static gint ett_rtpproxy_command = -1;
|
|
static gint ett_rtpproxy_tag = -1;
|
|
static gint ett_rtpproxy_notify = -1;
|
|
|
|
static gint ett_rtpproxy_reply = -1;
|
|
|
|
static guint rtpproxy_tcp_port = 22222;
|
|
static guint rtpproxy_udp_port = 22222;
|
|
|
|
void proto_reg_handoff_rtpproxy(void);
|
|
|
|
gint
|
|
rtpptoxy_add_tag(proto_tree *rtpproxy_tree, tvbuff_t *tvb, guint begin, guint realsize)
|
|
{
|
|
proto_item *ti = NULL;
|
|
proto_tree *another_tree = NULL;
|
|
gint new_offset;
|
|
guint end;
|
|
|
|
new_offset = tvb_find_guint8(tvb, begin, -1, ' ');
|
|
if(new_offset < 0)
|
|
end = realsize; /* No more parameters */
|
|
else
|
|
end = new_offset;
|
|
|
|
/* SER/OpenSER/OpenSIPS/Kamailio adds Media-ID right after the Tag
|
|
* separated by a semicolon
|
|
*/
|
|
new_offset = tvb_find_guint8(tvb, begin, end, ';');
|
|
if(new_offset == -1){
|
|
ti = proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_tag, tvb, begin, end - begin, ENC_ASCII | ENC_NA);
|
|
another_tree = proto_item_add_subtree(ti, ett_rtpproxy_tag);
|
|
ti = proto_tree_add_item(another_tree, hf_rtpproxy_mediaid, tvb, new_offset+1, 0, ENC_ASCII | ENC_NA);
|
|
proto_item_set_text(ti, "Media-ID: <skipped>");
|
|
}
|
|
else{
|
|
ti = proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_tag, tvb, begin, new_offset - begin, ENC_ASCII | ENC_NA);
|
|
another_tree = proto_item_add_subtree(ti, ett_rtpproxy_tag);
|
|
proto_tree_add_item(another_tree, hf_rtpproxy_mediaid, tvb, new_offset+1, end - (new_offset+1), ENC_ASCII | ENC_NA);
|
|
}
|
|
return (end == realsize ? -1 : (gint)end);
|
|
}
|
|
|
|
void
|
|
rtpproxy_add_tid(gboolean is_request, tvbuff_t *tvb, packet_info *pinfo, proto_tree *rtpproxy_tree, rtpproxy_conv_info_t *rtpproxy_conv, gchar* cookie)
|
|
{
|
|
rtpproxy_info_t *rtpproxy_info;
|
|
proto_item *pi;
|
|
|
|
if (!PINFO_FD_VISITED(pinfo)) {
|
|
if (is_request){
|
|
rtpproxy_info = wmem_new(wmem_file_scope(), rtpproxy_info_t);
|
|
rtpproxy_info->req_frame = PINFO_FD_NUM(pinfo);
|
|
rtpproxy_info->resp_frame = 0;
|
|
rtpproxy_info->req_time = pinfo->fd->abs_ts;
|
|
wmem_tree_insert_string(rtpproxy_conv->trans, cookie, rtpproxy_info, 0);
|
|
} else {
|
|
rtpproxy_info = (rtpproxy_info_t *)wmem_tree_lookup_string(rtpproxy_conv->trans, cookie, 0);
|
|
if (rtpproxy_info) {
|
|
rtpproxy_info->resp_frame = PINFO_FD_NUM(pinfo);
|
|
}
|
|
}
|
|
} else {
|
|
rtpproxy_info = (rtpproxy_info_t *)wmem_tree_lookup_string(rtpproxy_conv->trans, cookie, 0);
|
|
if (rtpproxy_info && (is_request ? rtpproxy_info->resp_frame : rtpproxy_info->req_frame)) {
|
|
nstime_t ns;
|
|
|
|
pi = proto_tree_add_uint(rtpproxy_tree, is_request ? hf_rtpproxy_response_in : hf_rtpproxy_request_in, tvb, 0, 0, is_request ? rtpproxy_info->resp_frame : rtpproxy_info->req_frame);
|
|
PROTO_ITEM_SET_GENERATED(pi);
|
|
|
|
/* If reply then calculate response time */
|
|
if (!is_request){
|
|
nstime_delta(&ns, &pinfo->fd->abs_ts, &rtpproxy_info->req_time);
|
|
pi = proto_tree_add_time(rtpproxy_tree, hf_rtpproxy_response_time, tvb, 0, 0, &ns);
|
|
PROTO_ITEM_SET_GENERATED(pi);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
dissect_rtpproxy(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
|
|
{
|
|
gboolean has_lf = FALSE;
|
|
gint offset = 0;
|
|
gint new_offset = 0;
|
|
guint tmp;
|
|
gint realsize = 0;
|
|
guint8* rawstr;
|
|
guint8* tmpstr;
|
|
proto_item *ti;
|
|
proto_tree *rtpproxy_tree;
|
|
conversation_t *conversation;
|
|
rtpproxy_conv_info_t *rtpproxy_conv;
|
|
gchar* cookie = NULL;
|
|
|
|
/* If it does not start with a printable character it's not RTPProxy */
|
|
if(!isprint(tvb_get_guint8(tvb, 0)))
|
|
return 0;
|
|
|
|
/* Extract Cookie */
|
|
offset = tvb_find_guint8(tvb, offset, -1, ' ');
|
|
if(offset == -1)
|
|
return 0;
|
|
|
|
/* Clear out stuff in the info column - we''l set it later */
|
|
col_clear(pinfo->cinfo, COL_INFO);
|
|
|
|
ti = proto_tree_add_item(tree, proto_rtpproxy, tvb, 0, -1, ENC_NA);
|
|
rtpproxy_tree = proto_item_add_subtree(ti, ett_rtpproxy);
|
|
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_cookie, tvb, 0, offset, ENC_ASCII | ENC_NA);
|
|
cookie = tvb_get_string(wmem_packet_scope(), tvb, 0, offset);
|
|
|
|
/* Skip whitespace */
|
|
offset = tvb_skip_wsp(tvb, offset+1, -1);
|
|
|
|
/* Calculate size to prevent recalculation in the future */
|
|
realsize = tvb_reported_length(tvb);
|
|
|
|
/* Check for LF (required for TCP connection, optional for UDP) */
|
|
if (tvb_get_guint8(tvb, realsize - 1) == '\n'){
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "RTPproxy");
|
|
/* Don't count trailing LF */
|
|
realsize -= 1;
|
|
has_lf = TRUE;
|
|
}
|
|
else
|
|
col_set_str(pinfo->cinfo, COL_PROTOCOL, "RTPproxy (no LF)");
|
|
|
|
/* Try to create conversation */
|
|
conversation = find_or_create_conversation(pinfo);
|
|
rtpproxy_conv = (rtpproxy_conv_info_t *)conversation_get_proto_data(conversation, proto_rtpproxy);
|
|
if (!rtpproxy_conv) {
|
|
rtpproxy_conv = wmem_new(wmem_file_scope(), rtpproxy_conv_info_t);
|
|
rtpproxy_conv->trans = wmem_tree_new(wmem_file_scope());
|
|
conversation_add_proto_data(conversation, proto_rtpproxy, rtpproxy_conv);
|
|
}
|
|
|
|
/* Get payload string */
|
|
rawstr = tvb_get_string(wmem_packet_scope(), tvb, offset, realsize - offset);
|
|
|
|
/* Extract command */
|
|
tmp = g_ascii_tolower(tvb_get_guint8(tvb, offset));
|
|
switch (tmp)
|
|
{
|
|
case 's':
|
|
/* A specific case - long statistics answer */
|
|
/* %COOKIE% sessions created %NUM0% active sessions: %NUM1% */
|
|
rtpproxy_add_tid(FALSE, tvb, pinfo, rtpproxy_tree, rtpproxy_conv, cookie);
|
|
if ('e' == tvb_get_guint8(tvb, offset+1)){
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "Reply: %s", rawstr);
|
|
ti = proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_reply, tvb, offset, -1, ENC_NA);
|
|
|
|
rtpproxy_tree = proto_item_add_subtree(ti, ett_rtpproxy_reply);
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_status, tvb, offset, realsize - offset, ENC_ASCII | ENC_NA);
|
|
break;
|
|
}
|
|
case 'i':
|
|
case 'x':
|
|
case 'u':
|
|
case 'l':
|
|
case 'd':
|
|
case 'p':
|
|
case 'v':
|
|
case 'r':
|
|
case 'c':
|
|
case 'q':
|
|
rtpproxy_add_tid(TRUE, tvb, pinfo, rtpproxy_tree, rtpproxy_conv, cookie);
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "Request: %s", rawstr);
|
|
ti = proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_request, tvb, offset, -1, ENC_NA);
|
|
rtpproxy_tree = proto_item_add_subtree(ti, ett_rtpproxy_request);
|
|
|
|
/* A specific case - version request */
|
|
if ((tmp == 'v') && (offset + (gint)strlen("VF YYYMMDD") + 1 == realsize)){
|
|
/* Skip whitespace */
|
|
new_offset = tvb_skip_wsp(tvb, offset + ((guint)strlen("VF") + 1), -1);
|
|
ti = proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_version_request, tvb, new_offset, (gint)strlen("YYYYMMDD"), ENC_ASCII | ENC_NA);
|
|
tmpstr = tvb_get_string(wmem_packet_scope(), tvb, new_offset, (gint)strlen("YYYYMMDD"));
|
|
proto_item_append_text(ti, " (%s)", str_to_str(tmpstr, versiontypenames, "Unknown"));
|
|
break;
|
|
}
|
|
|
|
/* All other commands */
|
|
ti = proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_command, tvb, offset, 1, ENC_NA);
|
|
|
|
/* A specific case - handshake/ping */
|
|
if (tmp == 'v')
|
|
break; /* No more parameters */
|
|
|
|
/* A specific case - close all calls */
|
|
if (tmp == 'x')
|
|
break; /* No more parameters */
|
|
|
|
/* Extract parameters */
|
|
/* Parameters should be right after the command and before EOL (in case of Info command) or before whitespace */
|
|
new_offset = (tmp == 'i' ? (realsize - 1 > offset ? offset + (gint)strlen("Ib") : offset + (gint)strlen("I")) : tvb_find_guint8(tvb, offset, -1, ' '));
|
|
|
|
if (new_offset != offset + 1){
|
|
rtpproxy_tree = proto_item_add_subtree(ti, ett_rtpproxy_command);
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_command_parameters, tvb, offset+1, new_offset - (offset+1), ENC_ASCII | ENC_NA);
|
|
rtpproxy_tree = proto_item_get_parent(ti);
|
|
}
|
|
|
|
/* A specific case - query information */
|
|
if (tmp == 'i')
|
|
break; /* No more parameters */
|
|
|
|
/* Skip whitespace */
|
|
offset = tvb_skip_wsp(tvb, new_offset+1, -1);
|
|
|
|
/* Extract Call-ID */
|
|
new_offset = tvb_find_guint8(tvb, offset, -1, ' ');
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_callid, tvb, offset, new_offset - offset, ENC_ASCII | ENC_NA);
|
|
/* Skip whitespace */
|
|
offset = tvb_skip_wsp(tvb, new_offset+1, -1);
|
|
|
|
/* Extract IP and Port in case of Offer/Answer */
|
|
if ((tmp == 'u') || (tmp == 'l')){
|
|
/* Extract IP */
|
|
new_offset = tvb_find_guint8(tvb, offset, -1, ' ');
|
|
if (tvb_find_guint8(tvb, offset, new_offset - offset, ':') == -1)
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_ipv4, tvb, offset, new_offset - offset, ENC_ASCII | ENC_NA);
|
|
else
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_ipv6, tvb, offset, new_offset - offset, ENC_ASCII | ENC_NA);
|
|
/* Skip whitespace */
|
|
offset = tvb_skip_wsp(tvb, new_offset+1, -1);
|
|
|
|
/* Extract Port */
|
|
new_offset = tvb_find_guint8(tvb, offset, -1, ' ');
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_port, tvb, offset, new_offset - offset, ENC_ASCII | ENC_NA);
|
|
/* Skip whitespace */
|
|
offset = tvb_skip_wsp(tvb, new_offset+1, -1);
|
|
}
|
|
|
|
/* Extract Copy target */
|
|
if (tmp == 'c'){
|
|
new_offset = tvb_find_guint8(tvb, offset, -1, ' ');
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_copy_target, tvb, offset, new_offset - offset, ENC_ASCII | ENC_NA);
|
|
/* Skip whitespace */
|
|
offset = tvb_skip_wsp(tvb, new_offset+1, -1);
|
|
}
|
|
|
|
/* Extract Playback file and codecs */
|
|
if (tmp == 'p'){
|
|
/* Extract filename */
|
|
new_offset = tvb_find_guint8(tvb, offset, -1, ' ');
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_playback_filename, tvb, offset, new_offset - offset, ENC_ASCII | ENC_NA);
|
|
/* Skip whitespace */
|
|
offset = tvb_skip_wsp(tvb, new_offset+1, -1);
|
|
|
|
/* Extract codec */
|
|
new_offset = tvb_find_guint8(tvb, offset, -1, ' ');
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_playback_codec, tvb, offset, new_offset - offset, ENC_ASCII | ENC_NA);
|
|
/* Skip whitespace */
|
|
offset = tvb_skip_wsp(tvb, new_offset+1, -1);
|
|
}
|
|
|
|
/* Extract first tag */
|
|
new_offset = rtpptoxy_add_tag(rtpproxy_tree, tvb, offset, realsize);
|
|
if(new_offset == -1)
|
|
break; /* No more parameters */
|
|
/* Skip whitespace */
|
|
offset = tvb_skip_wsp(tvb, new_offset+1, -1);
|
|
|
|
/* Extract second tag */
|
|
new_offset = rtpptoxy_add_tag(rtpproxy_tree, tvb, offset, realsize);
|
|
if(new_offset == -1)
|
|
break; /* No more parameters */
|
|
/* Skip whitespace */
|
|
offset = tvb_skip_wsp(tvb, new_offset+1, -1);
|
|
|
|
/* Extract Notification address */
|
|
if (tmp == 'u'){
|
|
new_offset = tvb_find_guint8(tvb, offset, -1, ' ');
|
|
ti = proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_notify, tvb, offset, realsize - offset, ENC_ASCII | ENC_NA);
|
|
proto_item_set_text(ti, "Notify");
|
|
rtpproxy_tree = proto_item_add_subtree(ti, ett_rtpproxy_notify);
|
|
if(new_offset == -1){
|
|
/* FIXME only IPv4 is supported */
|
|
new_offset = tvb_find_guint8(tvb, offset, -1, ':');
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_notify_ipv4, tvb, offset, new_offset - offset, ENC_ASCII | ENC_NA);
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_notify_port, tvb, new_offset+1, realsize - (new_offset+1), ENC_ASCII | ENC_NA);
|
|
break; /* No more parameters */
|
|
}
|
|
if(new_offset - offset < 6){
|
|
/* Only port is supplied */
|
|
ti = proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_notify_ipv4, tvb, offset, 0, ENC_ASCII | ENC_NA);
|
|
proto_item_set_text(ti, "Notification IPv4: <skipped>");
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_notify_port, tvb, offset, new_offset - offset, ENC_ASCII | ENC_NA);
|
|
}
|
|
else{
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_notify_ipv4, tvb, offset, new_offset - offset, ENC_ASCII | ENC_NA);
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_notify_port, tvb, new_offset+1, realsize - (new_offset+1), ENC_ASCII | ENC_NA);
|
|
}
|
|
/* Skip whitespace */
|
|
offset = tvb_skip_wsp(tvb, new_offset+1, -1);
|
|
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_notify_tag, tvb, offset, realsize - offset, ENC_ASCII | ENC_NA);
|
|
}
|
|
break;
|
|
case 'a':
|
|
case 'e':
|
|
case '0':
|
|
case '1':
|
|
case '2':
|
|
case '3':
|
|
case '4':
|
|
case '5':
|
|
case '6':
|
|
case '7':
|
|
case '8':
|
|
case '9':
|
|
rtpproxy_add_tid(FALSE, tvb, pinfo, rtpproxy_tree, rtpproxy_conv, cookie);
|
|
if (tmp == 'e')
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "Error reply: %s", rawstr);
|
|
else
|
|
col_add_fstr(pinfo->cinfo, COL_INFO, "Reply: %s", rawstr);
|
|
|
|
ti = proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_reply, tvb, offset, -1, ENC_NA);
|
|
rtpproxy_tree = proto_item_add_subtree(ti, ett_rtpproxy_reply);
|
|
|
|
if (tmp == 'e'){
|
|
tmp = tvb_find_line_end(tvb, offset, -1, &new_offset, FALSE);
|
|
tmpstr = tvb_get_string(wmem_packet_scope(), tvb, offset, tmp);
|
|
ti = proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_error, tvb, offset, (gint)strlen(tmpstr), ENC_ASCII | ENC_NA);
|
|
proto_item_append_text(ti, " (%s)", str_to_str(tmpstr, errortypenames, "Unknown"));
|
|
break;
|
|
}
|
|
|
|
if (tmp == 'a'){
|
|
/* A specific case - short statistics answer */
|
|
/* %COOKIE% active sessions: %NUM1% */
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_status, tvb, offset, realsize - offset, ENC_ASCII | ENC_NA);
|
|
break;
|
|
}
|
|
if ((tmp == '0')&& ((tvb_reported_length(tvb) == (guint)(offset+1))||(tvb_reported_length(tvb) == (guint)(offset+2)))){
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_ok, tvb, offset, 1, ENC_ASCII | ENC_NA);
|
|
break;
|
|
}
|
|
if ((tmp == '1') && ((tvb_reported_length(tvb) == (guint)(offset+1))||(tvb_reported_length(tvb) == (guint)(offset+2)))){
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_ok, tvb, offset, 1, ENC_ASCII | ENC_NA);
|
|
break;
|
|
}
|
|
if (tvb_reported_length(tvb) == (guint)(offset+9)){
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_version_supported, tvb, offset, 8, ENC_ASCII | ENC_NA);
|
|
break;
|
|
}
|
|
|
|
/* Extract Port */
|
|
new_offset = tvb_find_guint8(tvb, offset, -1, ' ');
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_port, tvb, offset, new_offset - offset, ENC_ASCII | ENC_NA);
|
|
/* Skip whitespace */
|
|
offset = tvb_skip_wsp(tvb, new_offset+1, -1);
|
|
|
|
/* Extract IP */
|
|
tmp = tvb_find_line_end(tvb, offset, -1, &new_offset, FALSE);
|
|
if (tvb_find_guint8(tvb, offset, -1, ':') == -1)
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_ipv4, tvb, offset, tmp, ENC_ASCII | ENC_NA);
|
|
else
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_ipv6, tvb, offset, tmp, ENC_ASCII | ENC_NA);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
if (has_lf)
|
|
proto_tree_add_item(rtpproxy_tree, hf_rtpproxy_lf, tvb, realsize, 1, ENC_NA);
|
|
|
|
return tvb_length(tvb);
|
|
}
|
|
|
|
void
|
|
proto_register_rtpproxy(void)
|
|
{
|
|
module_t *rtpproxy_module;
|
|
|
|
static hf_register_info hf[] = {
|
|
{
|
|
&hf_rtpproxy_cookie,
|
|
{
|
|
"Cookie",
|
|
"rtpproxy.cookie",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_version_request,
|
|
{
|
|
"Version Request",
|
|
"rtpproxy.version",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_version_supported,
|
|
{
|
|
"Version Supported",
|
|
"rtpproxy.version_supported",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_error,
|
|
{
|
|
"Error",
|
|
"rtpproxy.error",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_ok,
|
|
{
|
|
"Ok",
|
|
"rtpproxy.ok",
|
|
FT_UINT8,
|
|
BASE_DEC,
|
|
VALS(oktypenames),
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_status,
|
|
{
|
|
"Status",
|
|
"rtpproxy.status",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_ipv4,
|
|
{
|
|
"IPv4",
|
|
"rtpproxy.ipv4",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_ipv6,
|
|
{
|
|
"IPv6",
|
|
"rtpproxy.ipv6",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_port,
|
|
{
|
|
"Port",
|
|
"rtpproxy.port",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_request,
|
|
{
|
|
"Request",
|
|
"rtpproxy.request",
|
|
FT_NONE,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_command,
|
|
{
|
|
"Command",
|
|
"rtpproxy.command",
|
|
FT_UINT8,
|
|
BASE_DEC,
|
|
VALS(commandtypenames),
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_command_parameters,
|
|
{
|
|
"Command parameters",
|
|
"rtpproxy.command_parameters",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_copy_target,
|
|
{
|
|
"Copy target",
|
|
"rtpproxy.copy_target",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_playback_filename,
|
|
{
|
|
"Playback filename",
|
|
"rtpproxy.playback_filename",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_playback_codec,
|
|
{
|
|
"Playback codec",
|
|
"rtpproxy.playback_codec",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_callid,
|
|
{
|
|
"Call-ID",
|
|
"rtpproxy.callid",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_notify,
|
|
{
|
|
"Notify",
|
|
"rtpproxy.notify",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_tag,
|
|
{
|
|
"Tag",
|
|
"rtpproxy.tag",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_mediaid,
|
|
{
|
|
"Media-ID",
|
|
"rtpproxy.mediaid",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_notify_ipv4,
|
|
{
|
|
"Notification IPv4",
|
|
"rtpproxy.notify_ipv4",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_notify_port,
|
|
{
|
|
"Notification Port",
|
|
"rtpproxy.notify_port",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_notify_tag,
|
|
{
|
|
"Notification Tag",
|
|
"rtpproxy.notify_tag",
|
|
FT_STRING,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_reply,
|
|
{
|
|
"Reply",
|
|
"rtpproxy.reply",
|
|
FT_NONE,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_lf,
|
|
{
|
|
"LF",
|
|
"rtpproxy.lf",
|
|
FT_UINT8,
|
|
BASE_DEC,
|
|
VALS(flowcontroltypenames),
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_request_in,
|
|
{
|
|
"Request In",
|
|
"rtpproxy.request_in",
|
|
FT_FRAMENUM,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
|
|
},
|
|
{
|
|
&hf_rtpproxy_response_in,
|
|
{
|
|
"Response In",
|
|
"rtpproxy.response_in",
|
|
FT_FRAMENUM,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
NULL,
|
|
HFILL
|
|
}
|
|
},
|
|
{
|
|
&hf_rtpproxy_response_time,
|
|
{
|
|
"Response Time",
|
|
"rtpproxy.response_time",
|
|
FT_RELATIVE_TIME,
|
|
BASE_NONE,
|
|
NULL,
|
|
0x0,
|
|
"The time between the Request and the Reply",
|
|
HFILL
|
|
}
|
|
}
|
|
};
|
|
|
|
/* Setup protocol subtree array */
|
|
static gint *ett[] = {
|
|
&ett_rtpproxy,
|
|
&ett_rtpproxy_request,
|
|
&ett_rtpproxy_command,
|
|
&ett_rtpproxy_tag,
|
|
&ett_rtpproxy_notify,
|
|
&ett_rtpproxy_reply
|
|
};
|
|
|
|
proto_rtpproxy = proto_register_protocol (
|
|
"Sippy RTPproxy Protocol", /* name */
|
|
"RTPproxy", /* short name */
|
|
"rtpproxy" /* abbrev */
|
|
);
|
|
|
|
proto_register_field_array(proto_rtpproxy, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
rtpproxy_module = prefs_register_protocol(proto_rtpproxy, proto_reg_handoff_rtpproxy);
|
|
prefs_register_uint_preference(rtpproxy_module, "tcp.port",
|
|
"RTPproxy TCP Port", /* Title */
|
|
"RTPproxy TCP Port", /* Descr */
|
|
10,
|
|
&rtpproxy_tcp_port);
|
|
|
|
prefs_register_uint_preference(rtpproxy_module, "udp.port",
|
|
"RTPproxy UDP Port", /* Title */
|
|
"RTPproxy UDP Port", /* Descr */
|
|
10,
|
|
&rtpproxy_udp_port);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_rtpproxy(void)
|
|
{
|
|
static guint old_rtpproxy_tcp_port = 0;
|
|
static guint old_rtpproxy_udp_port = 0;
|
|
|
|
static gboolean rtpproxy_initialized = FALSE;
|
|
|
|
static dissector_handle_t rtpproxy_tcp_handle, rtpproxy_udp_handle;
|
|
|
|
if(!rtpproxy_initialized){
|
|
rtpproxy_tcp_handle = new_create_dissector_handle(dissect_rtpproxy, proto_rtpproxy);
|
|
rtpproxy_udp_handle = new_create_dissector_handle(dissect_rtpproxy, proto_rtpproxy);
|
|
rtpproxy_initialized = TRUE;
|
|
}
|
|
|
|
/* Register TCP port for dissection */
|
|
if(old_rtpproxy_tcp_port != 0 && old_rtpproxy_tcp_port != rtpproxy_tcp_port)
|
|
dissector_delete_uint("tcp.port", old_rtpproxy_tcp_port, rtpproxy_tcp_handle);
|
|
if(rtpproxy_tcp_port != 0 && old_rtpproxy_tcp_port != rtpproxy_tcp_port)
|
|
dissector_add_uint("tcp.port", rtpproxy_tcp_port, rtpproxy_tcp_handle);
|
|
old_rtpproxy_tcp_port = rtpproxy_tcp_port;
|
|
|
|
/* Register UDP port for dissection */
|
|
if(old_rtpproxy_udp_port != 0 && old_rtpproxy_udp_port != rtpproxy_udp_port)
|
|
dissector_delete_uint("udp.port", old_rtpproxy_udp_port, rtpproxy_udp_handle);
|
|
if(rtpproxy_udp_port != 0 && old_rtpproxy_udp_port != rtpproxy_udp_port)
|
|
dissector_add_uint("udp.port", rtpproxy_udp_port, rtpproxy_udp_handle);
|
|
old_rtpproxy_udp_port = rtpproxy_udp_port;
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|