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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 1999 - 2014, Digium, Inc.
*
* Matt Jordan <mjordan@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*!
* \file
* \brief PJSIP logging with Homer
*
* \author Matt Jordan <mjordan@digium.com>
*
*/
/*** MODULEINFO
<depend>pjproject</depend>
<depend>res_pjsip</depend>
<depend>res_pjsip_session</depend>
<depend>res_hep</depend>
<support_level>extended</support_level>
***/
#include "asterisk.h"
#include <pjsip.h>
#include <pjsip_ua.h>
#include <pjlib.h>
#include "asterisk/res_pjsip.h"
#include "asterisk/res_pjsip_session.h"
#include "asterisk/res_hep.h"
#include "asterisk/module.h"
#include "asterisk/netsock2.h"
static char *assign_uuid(const pj_str_t *call_id, const pj_str_t *local_tag, const pj_str_t *remote_tag)
{
RAII_VAR(struct ast_sip_session *, session, NULL, ao2_cleanup);
pjsip_dialog *dlg;
char *uuid = NULL;
enum hep_uuid_type uuid_type = hepv3_get_uuid_type();
if ((uuid_type == HEP_UUID_TYPE_CHANNEL)
&& (dlg = pjsip_ua_find_dialog(call_id, local_tag, remote_tag, PJ_FALSE))
&& (session = ast_sip_dialog_get_session(dlg))
&& (session->channel)) {
uuid = ast_strdup(ast_channel_name(session->channel));
}
/* If we couldn't get the channel or we never wanted it, default to the call-id */
if (!uuid) {
uuid = ast_malloc(pj_strlen(call_id) + 1);
if (uuid) {
ast_copy_pj_str(uuid, call_id, pj_strlen(call_id) + 1);
}
}
return uuid;
}
static int transport_to_protocol_id(pjsip_transport *tp)
{
/* XXX If we ever add SCTP support, we'll need to revisit */
if (tp->flag & PJSIP_TRANSPORT_RELIABLE) {
return IPPROTO_TCP;
}
return IPPROTO_UDP;
}
static pj_status_t logging_on_tx_msg(pjsip_tx_data *tdata)
{
char local_buf[256];
char remote_buf[256];
char *uuid;
struct hepv3_capture_info *capture_info;
pjsip_cid_hdr *cid_hdr;
pjsip_from_hdr *from_hdr;
pjsip_to_hdr *to_hdr;
capture_info = hepv3_create_capture_info(tdata->buf.start, (size_t)(tdata->buf.cur - tdata->buf.start));
if (!capture_info) {
return PJ_SUCCESS;
}
if (!(tdata->tp_info.transport->flag & PJSIP_TRANSPORT_RELIABLE)) {
pjsip_tpmgr_fla2_param prm;
/* Attempt to determine what IP address will we send this packet out of */
pjsip_tpmgr_fla2_param_default(&prm);
prm.tp_type = tdata->tp_info.transport->key.type;
pj_strset2(&prm.dst_host, tdata->tp_info.dst_name);
prm.local_if = PJ_TRUE;
/* If we can't get the local address use what we have already */
if (pjsip_tpmgr_find_local_addr2(pjsip_endpt_get_tpmgr(ast_sip_get_pjsip_endpoint()), tdata->pool, &prm) != PJ_SUCCESS) {
pj_sockaddr_print(&tdata->tp_info.transport->local_addr, local_buf, sizeof(local_buf), 3);
} else {
if (prm.tp_type & PJSIP_TRANSPORT_IPV6) {
snprintf(local_buf, sizeof(local_buf), "[%.*s]:%hu",
(int)pj_strlen(&prm.ret_addr),
pj_strbuf(&prm.ret_addr),
prm.ret_port);
} else {
snprintf(local_buf, sizeof(local_buf), "%.*s:%hu",
(int)pj_strlen(&prm.ret_addr),
pj_strbuf(&prm.ret_addr),
prm.ret_port);
}
}
} else {
/* For reliable transports they can only ever come from the transport
* local address.
*/
pj_sockaddr_print(&tdata->tp_info.transport->local_addr, local_buf, sizeof(local_buf), 3);
}
pj_sockaddr_print(&tdata->tp_info.dst_addr, remote_buf, sizeof(remote_buf), 3);
cid_hdr = PJSIP_MSG_CID_HDR(tdata->msg);
from_hdr = PJSIP_MSG_FROM_HDR(tdata->msg);
to_hdr = PJSIP_MSG_TO_HDR(tdata->msg);
uuid = assign_uuid(&cid_hdr->id, &to_hdr->tag, &from_hdr->tag);
if (!uuid) {
ao2_ref(capture_info, -1);
return PJ_SUCCESS;
}
ast_sockaddr_parse(&capture_info->src_addr, local_buf, PARSE_PORT_REQUIRE);
ast_sockaddr_parse(&capture_info->dst_addr, remote_buf, PARSE_PORT_REQUIRE);
capture_info->protocol_id = transport_to_protocol_id(tdata->tp_info.transport);
capture_info->capture_time = ast_tvnow();
capture_info->capture_type = HEPV3_CAPTURE_TYPE_SIP;
capture_info->uuid = uuid;
capture_info->zipped = 0;
hepv3_send_packet(capture_info);
return PJ_SUCCESS;
}
static pj_bool_t logging_on_rx_msg(pjsip_rx_data *rdata)
{
char local_buf[256];
char remote_buf[256];
char *uuid;
struct hepv3_capture_info *capture_info;
capture_info = hepv3_create_capture_info(&rdata->pkt_info.packet, rdata->pkt_info.len);
if (!capture_info) {
return PJ_SUCCESS;
}
if (!rdata->pkt_info.src_addr_len) {
return PJ_SUCCESS;
}
pj_sockaddr_print(&rdata->pkt_info.src_addr, remote_buf, sizeof(remote_buf), 3);
if (!(rdata->tp_info.transport->flag & PJSIP_TRANSPORT_RELIABLE)) {
pjsip_tpmgr_fla2_param prm;
/* Attempt to determine what IP address we probably received this packet on */
pjsip_tpmgr_fla2_param_default(&prm);
prm.tp_type = rdata->tp_info.transport->key.type;
pj_strset2(&prm.dst_host, rdata->pkt_info.src_name);
prm.local_if = PJ_TRUE;
/* If we can't get the local address use what we have already */
if (pjsip_tpmgr_find_local_addr2(pjsip_endpt_get_tpmgr(ast_sip_get_pjsip_endpoint()), rdata->tp_info.pool, &prm) != PJ_SUCCESS) {
pj_sockaddr_print(&rdata->tp_info.transport->local_addr, local_buf, sizeof(local_buf), 3);
} else {
if (prm.tp_type & PJSIP_TRANSPORT_IPV6) {
snprintf(local_buf, sizeof(local_buf), "[%.*s]:%hu",
(int)pj_strlen(&prm.ret_addr),
pj_strbuf(&prm.ret_addr),
prm.ret_port);
} else {
snprintf(local_buf, sizeof(local_buf), "%.*s:%hu",
(int)pj_strlen(&prm.ret_addr),
pj_strbuf(&prm.ret_addr),
prm.ret_port);
}
}
} else {
pj_sockaddr_print(&rdata->tp_info.transport->local_addr, local_buf, sizeof(local_buf), 3);
}
uuid = assign_uuid(&rdata->msg_info.cid->id, &rdata->msg_info.to->tag, &rdata->msg_info.from->tag);
if (!uuid) {
ao2_ref(capture_info, -1);
return PJ_SUCCESS;
}
ast_sockaddr_parse(&capture_info->src_addr, remote_buf, PARSE_PORT_REQUIRE);
ast_sockaddr_parse(&capture_info->dst_addr, local_buf, PARSE_PORT_REQUIRE);
capture_info->protocol_id = transport_to_protocol_id(rdata->tp_info.transport);
capture_info->capture_time.tv_sec = rdata->pkt_info.timestamp.sec;
capture_info->capture_time.tv_usec = rdata->pkt_info.timestamp.msec * 1000;
capture_info->capture_type = HEPV3_CAPTURE_TYPE_SIP;
capture_info->uuid = uuid;
capture_info->zipped = 0;
hepv3_send_packet(capture_info);
return PJ_FALSE;
}
static pjsip_module logging_module = {
.name = { "HEPv3 Logging Module", 20 },
.priority = 0,
.on_rx_request = logging_on_rx_msg,
.on_rx_response = logging_on_rx_msg,
.on_tx_request = logging_on_tx_msg,
.on_tx_response = logging_on_tx_msg,
};
static int load_module(void)
{
if (!hepv3_is_loaded()) {
ast_log(AST_LOG_WARNING, "res_hep is disabled; declining module load\n");
return AST_MODULE_LOAD_DECLINE;
}
ast_sip_register_service(&logging_module);
return AST_MODULE_LOAD_SUCCESS;
}
static int unload_module(void)
{
ast_sip_unregister_service(&logging_module);
return 0;
}
AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_DEFAULT, "PJSIP HEPv3 Logger",
.support_level = AST_MODULE_SUPPORT_EXTENDED,
.load = load_module,
.unload = unload_module,
.requires = "res_hep,res_pjsip",
);
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