/
rtpengine.c
3258 lines (2829 loc) · 79.5 KB
/
rtpengine.c
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/*
* Copyright (C) 2003-2008 Sippy Software, Inc., http://www.sippysoft.com
*
* This file is part of opensips, a free SIP server.
*
* opensips 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
*
* opensips 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
*
* History:
* ---------
* 2014-06-17 Imported from rtpproxy module
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#ifndef __USE_BSD
#define __USE_BSD
#endif
#include <netinet/ip.h>
#ifndef __FAVOR_BSD
#define __FAVOR_BSD
#endif
#include <netinet/udp.h>
#include <arpa/inet.h>
#include <sys/uio.h>
#include <sys/un.h>
#include <ctype.h>
#include <errno.h>
#include <netdb.h>
#include <poll.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "../../str.h"
#include "../../flags.h"
#include "../../sr_module.h"
#include "../../dprint.h"
#include "../../data_lump.h"
#include "../../data_lump_rpl.h"
#include "../../error.h"
#include "../../forward.h"
#include "../../context.h"
#include "../../mem/mem.h"
#include "../../parser/parse_from.h"
#include "../../parser/parse_to.h"
#include "../../parser/parse_uri.h"
#include "../../parser/parser_f.h"
#include "../../parser/sdp/sdp.h"
#include "../../resolve.h"
#include "../../timer.h"
#include "../../trim.h"
#include "../../ut.h"
#include "../../pt.h"
#include "../../pvar.h"
#include "../../db/db.h"
#include "../../msg_translator.h"
#include "../../usr_avp.h"
#include "../../socket_info.h"
#include "../../mod_fix.h"
#include "../../dset.h"
#include "../../route.h"
#include "../../modules/tm/tm_load.h"
#include "../../lib/cJSON.h"
#include "rtpengine.h"
#include "rtpengine_funcs.h"
#include "bencode.h"
#if !defined(AF_LOCAL)
#define AF_LOCAL AF_UNIX
#endif
#if !defined(PF_LOCAL)
#define PF_LOCAL PF_UNIX
#endif
#define DEFAULT_RTPE_SET_ID 0
#define MI_ENABLE_RTP_ENGINE "rtpengine_enable"
#define MI_MIN_RECHECK_TICKS 0
#define MI_MAX_RECHECK_TICKS (unsigned int)-1
#define MI_SHOW_RTP_ENGINES "rtpengine_show"
#define MI_RELOAD_RTP_ENGINES "rtpengine_reload"
#define MI_RTP_ENGINE_NOT_FOUND "RTP engine not found"
#define MI_RTP_ENGINE_NOT_FOUND_LEN (sizeof(MI_RTP_ENGINE_NOT_FOUND)-1)
#define MI_SET "Set"
#define MI_SET_LEN (sizeof(MI_SET)-1)
#define MI_NODE "node"
#define MI_NODE_LEN (sizeof(MI_NODE)-1)
#define MI_INDEX "index"
#define MI_INDEX_LEN (sizeof(MI_INDEX)-1)
#define MI_DISABLED "disabled"
#define MI_DISABLED_LEN (sizeof(MI_DISABLED)-1)
#define MI_WEIGHT "weight"
#define MI_WEIGHT_LEN (sizeof(MI_WEIGHT)-1)
#define MI_RECHECK_TICKS "recheck_ticks"
#define MI_RECHECK_T_LEN (sizeof(MI_RECHECK_TICKS)-1)
#define CPORT "22222"
#define rtpe_ctx_tryget() \
(current_processing_ctx == NULL ? NULL : \
((struct rtpe_ctx *)context_get_ptr(CONTEXT_GLOBAL, current_processing_ctx, rtpe_ctx_idx)))
#define rtpe_ctx_set(_ctx) \
context_put_ptr(CONTEXT_GLOBAL, current_processing_ctx, rtpe_ctx_idx, _ctx)
#define RTPE_START_READ() \
do { \
if (rtpe_lock) \
lock_start_read(rtpe_lock); \
} while (0)
#define RTPE_STOP_READ() \
do { \
if (rtpe_lock) \
lock_stop_read(rtpe_lock); \
} while (0)
enum rtpe_operation {
OP_OFFER = 1,
OP_ANSWER,
OP_DELETE,
OP_START_RECORDING,
OP_STOP_RECORDING,
OP_QUERY,
OP_START_MEDIA,
OP_STOP_MEDIA,
OP_BLOCK_MEDIA,
OP_UNBLOCK_MEDIA,
OP_BLOCK_DTMF,
OP_UNBLOCK_DTMF,
};
enum rtpe_stat {
STAT_MOS_AVERAGE, STAT_JITTER_AVERAGE, STAT_ROUNDTRIP_AVERAGE, STAT_PACKETLOSS_AVERAGE,
STAT_MOS_MIN, STAT_JITTER_MIN, STAT_ROUNDTRIP_MIN, STAT_PACKETLOSS_MIN,
STAT_MOS_MIN_AT, STAT_JITTER_MIN_AT, STAT_ROUNDTRIP_MIN_AT, STAT_PACKETLOSS_MIN_AT,
STAT_MOS_MAX, STAT_JITTER_MAX, STAT_ROUNDTRIP_MAX, STAT_PACKETLOSS_MAX,
STAT_MOS_MAX_AT, STAT_JITTER_MAX_AT, STAT_ROUNDTRIP_MAX_AT, STAT_PACKETLOSS_MAX_AT,
STAT_UNKNOWN /* always keep last */
};
enum rtpe_stat_type {
STAT_AVERAGE,
STAT_MAX,
STAT_MAX_AT,
STAT_MIN,
STAT_MIN_AT
};
enum rtpe_stat_dict {
STAT_MOS,
STAT_JITTER,
STAT_ROUNDTRIP,
STAT_PACKETLOSS
};
struct rtpe_stats {
bencode_item_t *dict;
bencode_buffer_t buf;
str json;
};
struct rtpe_ctx {
struct rtpe_stats *stats;
struct rtpe_set *set;
} rtpe_ctx_t;
struct ng_flags_parse {
int via, to, packetize, transport;
bencode_item_t *dict, *flags, *direction, *replace, *rtcp_mux;
str call_id, from_tag, to_tag;
};
enum rtpe_set_var {
RTPE_SET_NONE, RTPE_SET_FIXED
};
typedef struct rtpe_set_link {
enum rtpe_set_var type;
union {
int id;
struct rtpe_set *rset;
} v;
} rtpe_set_link_t;
static const char *command_strings[] = {
[OP_OFFER] = "offer",
[OP_ANSWER] = "answer",
[OP_DELETE] = "delete",
[OP_START_RECORDING] = "start recording",
[OP_STOP_RECORDING] = "stop recording",
[OP_QUERY] = "query",
[OP_START_MEDIA]= "play media",
[OP_STOP_MEDIA] = "stop media",
[OP_BLOCK_MEDIA]= "block media",
[OP_UNBLOCK_MEDIA] = "unblock media",
[OP_BLOCK_DTMF]= "block DTMF",
[OP_UNBLOCK_DTMF] = "unblock DTMF",
};
static const str stat_maps[] = {
[STAT_MOS_AVERAGE] = str_init("mos-average"),
[STAT_MOS_MIN] = str_init("mos-min"),
[STAT_MOS_MIN_AT] = str_init("mos-min-at"),
[STAT_MOS_MAX] = str_init("mos-max"),
[STAT_MOS_MAX_AT] = str_init("mos-max-at"),
[STAT_JITTER_AVERAGE] = str_init("jitter-average"),
[STAT_JITTER_MIN] = str_init("jitter-min"),
[STAT_JITTER_MIN_AT] = str_init("jitter-min-at"),
[STAT_JITTER_MAX] = str_init("jitter-max"),
[STAT_JITTER_MAX_AT] = str_init("jitter-max-at"),
[STAT_ROUNDTRIP_AVERAGE] = str_init("roundtrip-average"),
[STAT_ROUNDTRIP_MIN] = str_init("roundtrip-min"),
[STAT_ROUNDTRIP_MIN_AT] = str_init("roundtrip-min-at"),
[STAT_ROUNDTRIP_MAX] = str_init("roundtrip-max"),
[STAT_ROUNDTRIP_MAX_AT] = str_init("roundtrip-max-at"),
[STAT_PACKETLOSS_AVERAGE] = str_init("packetloss-average"),
[STAT_PACKETLOSS_MIN] = str_init("packetloss-min"),
[STAT_PACKETLOSS_MIN_AT] = str_init("packetloss-min-at"),
[STAT_PACKETLOSS_MAX] = str_init("packetloss-max"),
[STAT_PACKETLOSS_MAX_AT] = str_init("packetloss-max-at")
};
static char *gencookie();
static int rtpe_test(struct rtpe_node*, int, int);
static int start_recording_f(struct sip_msg* msg, str *flags, pv_spec_t *spvar);
static int stop_recording_f(struct sip_msg* msg, str *flags, pv_spec_t *spvar);
static int rtpengine_offer_f(struct sip_msg *msg, str *flags, pv_spec_t *spvar,
pv_spec_t *bpvar, str *body);
static int rtpengine_answer_f(struct sip_msg *msg, str *flags, pv_spec_t *spvar,
pv_spec_t *bpvar, str *body);
static int rtpengine_manage_f(struct sip_msg *msg, str *flags, pv_spec_t *spvar,
pv_spec_t *bpvar, str *body);
static int rtpengine_delete_f(struct sip_msg* msg, str *flags, pv_spec_t *spvar);
static void free_rtpe_nodes(struct rtpe_set *list);
static int rtpengine_playmedia_f(struct sip_msg* msg, str *flags,
pv_spec_t *duration, pv_spec_t *spvar);
static int rtpengine_stopmedia_f(struct sip_msg* msg, str *flags, pv_spec_t *spvar);
static int rtpengine_blockmedia_f(struct sip_msg* msg, str *flags, pv_spec_t *spvar);
static int rtpengine_unblockmedia_f(struct sip_msg* msg, str *flags, pv_spec_t *spvar);
static int rtpengine_blockdtmf_f(struct sip_msg* msg, str *flags, pv_spec_t *spvar);
static int rtpengine_unblockdtmf_f(struct sip_msg* msg, str *flags, pv_spec_t *spvar);
static int parse_flags(struct ng_flags_parse *, struct sip_msg *, enum rtpe_operation *, const char *);
static int rtpengine_offer_answer(struct sip_msg *msg, str *flags,
pv_spec_t *spvar, pv_spec_t *bpvar, str *body, int op);
static int add_rtpengine_socks(struct rtpe_set * rtpe_list, char * rtpengine);
static int fixup_set_id(void ** param);
static int fixup_free_set_id(void ** param);
static int set_rtpengine_set_f(struct sip_msg * msg, rtpe_set_link_t *set_param);
static struct rtpe_set * select_rtpe_set(int id_set);
static struct rtpe_node *select_rtpe_node(str, int, struct rtpe_set *);
static char *send_rtpe_command(struct rtpe_node *, bencode_item_t *, int *);
static int get_extra_id(struct sip_msg* msg, str *id_str);
static int update_rtpengines(void);
static int _add_rtpengine_from_database(void);
static int rtpengine_set_store(modparam_t type, void * val);
static int rtpengine_add_rtpengine_set( char * rtp_proxies, int set_id);
static int mod_init(void);
static int child_init(int);
static void mod_destroy(void);
static int mi_child_init(void);
/* Pseudo-Variables */
static int pv_get_rtpstat_f(struct sip_msg *, pv_param_t *, pv_value_t *);
static int pv_get_rtpquery_f(struct sip_msg *, pv_param_t *, pv_value_t *);
/*mi commands*/
static mi_response_t *mi_enable_rtp_proxy(const mi_params_t *params,
struct mi_handler *async_hdl);
static mi_response_t *mi_show_rtpengines(const mi_params_t *params,
struct mi_handler *async_hdl);
static mi_response_t *mi_teardown_call(const mi_params_t *params,
struct mi_handler *async_hdl);
static mi_response_t *mi_reload_rtpengines(const mi_params_t *params,
struct mi_handler *async_hdl);
static int rtpengine_stats_used = 0;
static int rtpengine_disable_tout = 60;
static int rtpengine_retr = 5;
static int rtpengine_tout = 1;
static pid_t mypid;
static unsigned int myseqn = 0;
static str extra_id_pv_param = {NULL, 0};
static char *setid_avp_param = NULL;
static char ** rtpe_strings=0;
static int rtpe_sets=0; /*used in rtpengine_set_store()*/
static int rtpe_set_count = 0;
static int rtpe_ctx_idx = -1;
struct rtpe_set_head **rtpe_set_list =0;
struct rtpe_set **default_rtpe_set=0;
/* array with the sockets used by rtpengine (per process)*/
static int *rtpe_socks = 0;
static str db_url = {NULL, 0};
static str db_table = str_init("rtpengine");
static str db_rtpe_set_col = str_init("set_id");
static str db_rtpe_sock_col = str_init("socket");
static db_con_t *db_connection = NULL;
static db_func_t db_functions;
static rw_lock_t *rtpe_lock=NULL;
static unsigned int *rtpe_no = 0;
static unsigned int *list_version;
static unsigned int my_version = 0;
static unsigned int rtpe_number = 0;
static int setid_avp_type;
static int_str setid_avp;
/* tm */
static struct tm_binds tmb;
static pv_elem_t *extra_id_pv = NULL;
#define ANY_ROUTE (REQUEST_ROUTE|ONREPLY_ROUTE|FAILURE_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE)
static cmd_export_t cmds[] = {
{"rtpengine_use_set", (cmd_function)set_rtpengine_set_f, {
{CMD_PARAM_INT, fixup_set_id, fixup_free_set_id}, {0,0,0}},
ANY_ROUTE},
{"rtpengine_start_recording", (cmd_function)start_recording_f, {
{CMD_PARAM_STR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_VAR | CMD_PARAM_OPT, 0, 0}, {0,0,0}},
ANY_ROUTE},
{"rtpengine_stop_recording", (cmd_function)stop_recording_f, {
{CMD_PARAM_STR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_VAR | CMD_PARAM_OPT, 0, 0}, {0,0,0}},
ANY_ROUTE},
{"rtpengine_offer", (cmd_function)rtpengine_offer_f, {
{CMD_PARAM_STR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_VAR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_VAR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_STR | CMD_PARAM_OPT, 0, 0}, {0,0,0}},
ANY_ROUTE},
{"rtpengine_answer", (cmd_function)rtpengine_answer_f, {
{CMD_PARAM_STR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_VAR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_VAR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_STR | CMD_PARAM_OPT, 0, 0}, {0,0,0}},
ANY_ROUTE},
{"rtpengine_manage", (cmd_function)rtpengine_manage_f, {
{CMD_PARAM_STR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_VAR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_VAR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_STR | CMD_PARAM_OPT, 0, 0}, {0,0,0}},
ANY_ROUTE},
{"rtpengine_delete", (cmd_function)rtpengine_delete_f, {
{CMD_PARAM_STR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_VAR | CMD_PARAM_OPT, 0, 0}, {0,0,0}},
ANY_ROUTE},
{"rtpengine_play_media", (cmd_function)rtpengine_playmedia_f, {
{CMD_PARAM_STR, 0, 0},
{CMD_PARAM_VAR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_VAR | CMD_PARAM_OPT, 0, 0},
{0,0,0}},
ANY_ROUTE},
{"rtpengine_stop_media", (cmd_function)rtpengine_stopmedia_f, {
{CMD_PARAM_STR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_VAR | CMD_PARAM_OPT, 0, 0},
{0,0,0}},
ANY_ROUTE},
{"rtpengine_block_media", (cmd_function)rtpengine_blockmedia_f, {
{CMD_PARAM_STR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_VAR | CMD_PARAM_OPT, 0, 0},
{0,0,0}},
ANY_ROUTE},
{"rtpengine_unblock_media", (cmd_function)rtpengine_unblockmedia_f, {
{CMD_PARAM_STR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_VAR | CMD_PARAM_OPT, 0, 0},
{0,0,0}},
ANY_ROUTE},
{"rtpengine_block_dtmf", (cmd_function)rtpengine_blockdtmf_f, {
{CMD_PARAM_STR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_VAR | CMD_PARAM_OPT, 0, 0},
{0,0,0}},
ANY_ROUTE},
{"rtpengine_unblock_dtmf", (cmd_function)rtpengine_unblockdtmf_f, {
{CMD_PARAM_STR | CMD_PARAM_OPT, 0, 0},
{CMD_PARAM_VAR | CMD_PARAM_OPT, 0, 0},
{0,0,0}},
ANY_ROUTE},
{0,0,{{0,0,0}},0}
};
static int pv_rtpengine_stats_used(pv_spec_p sp, int param)
{
rtpengine_stats_used = 1;
return 0;
}
static inline enum rtpe_stat rtpe_get_stat_by_name(str *name)
{
enum rtpe_stat s;
for (s = 0; s < STAT_UNKNOWN; s++) {
if (str_strcasecmp(&stat_maps[s], name) == 0)
return s;
}
return STAT_UNKNOWN;
}
static inline enum rtpe_stat_type rtpe_get_stat_by_type(enum rtpe_stat s)
{
enum rtpe_stat_type t;
switch (s) {
case STAT_MOS_AVERAGE:
case STAT_JITTER_AVERAGE:
case STAT_ROUNDTRIP_AVERAGE:
case STAT_PACKETLOSS_AVERAGE:
t = STAT_AVERAGE;
break;
case STAT_MOS_MAX:
case STAT_JITTER_MAX:
case STAT_ROUNDTRIP_MAX:
case STAT_PACKETLOSS_MAX:
t = STAT_MAX;
break;
case STAT_MOS_MAX_AT:
case STAT_JITTER_MAX_AT:
case STAT_ROUNDTRIP_MAX_AT:
case STAT_PACKETLOSS_MAX_AT:
t = STAT_MAX_AT;
break;
case STAT_MOS_MIN:
case STAT_JITTER_MIN:
case STAT_ROUNDTRIP_MIN:
case STAT_PACKETLOSS_MIN:
t = STAT_MIN;
break;
case STAT_MOS_MIN_AT:
case STAT_JITTER_MIN_AT:
case STAT_ROUNDTRIP_MIN_AT:
case STAT_PACKETLOSS_MIN_AT:
t = STAT_MIN_AT;
break;
default:
LM_BUG("unknown stat type %d\n", s);
t = TYPE_UNKNOWN;
}
return t;
}
static inline enum rtpe_stat_dict rtpe_get_stat_by_dict(enum rtpe_stat s)
{
enum rtpe_stat_dict d;
switch (s) {
case STAT_MOS_AVERAGE:
case STAT_MOS_MAX:
case STAT_MOS_MAX_AT:
case STAT_MOS_MIN:
case STAT_MOS_MIN_AT:
d = STAT_MOS;
break;
case STAT_JITTER_AVERAGE:
case STAT_JITTER_MAX:
case STAT_JITTER_MAX_AT:
case STAT_JITTER_MIN:
case STAT_JITTER_MIN_AT:
d = STAT_JITTER;
break;
case STAT_ROUNDTRIP_AVERAGE:
case STAT_ROUNDTRIP_MAX:
case STAT_ROUNDTRIP_MAX_AT:
case STAT_ROUNDTRIP_MIN:
case STAT_ROUNDTRIP_MIN_AT:
d = STAT_ROUNDTRIP;
break;
case STAT_PACKETLOSS_AVERAGE:
case STAT_PACKETLOSS_MAX:
case STAT_PACKETLOSS_MAX_AT:
case STAT_PACKETLOSS_MIN:
case STAT_PACKETLOSS_MIN_AT:
d = STAT_PACKETLOSS;
break;
default:
LM_BUG("unknown stat dictionary %d\n", s);
d = TYPE_UNKNOWN;
}
return d;
}
#define PVE_NAME_NONE 0
#define PVE_NAME_INTSTR 1
#define PVE_NAME_PVAR 2
static int pv_parse_rtpstat(pv_spec_p sp, str *in)
{
enum rtpe_stat s;
pv_elem_t *format;
if (!in || in->s == NULL || in->len == 0 || sp == NULL)
return -1;
LM_DBG("RTP stat name %p with name <%.*s>\n", &sp->pvp.pvn, in->len, in->s);
if (pv_parse_format(in, &format)!=0) {
LM_ERR("failed to parse statistic name format <%.*s> \n",
in->len,in->s);
return -1;
}
if (format->next==NULL && format->spec.type==PVT_NONE) {
s = rtpe_get_stat_by_name(in);
if (s == STAT_UNKNOWN) {
LM_ERR("Unknown RTP statistic %.*s\n", in->len, in->s);
return -1;
}
sp->pvp.pvn.type = PVE_NAME_INTSTR;
sp->pvp.pvn.u.isname.type = 0;
sp->pvp.pvn.u.isname.name.n = s;
} else {
sp->pvp.pvn.type = PVE_NAME_PVAR;
sp->pvp.pvn.u.isname.type = 0;
sp->pvp.pvn.u.isname.name.s.s = (char*)(void*)format;
sp->pvp.pvn.u.isname.name.s.len = 0;
}
return 0;
}
static int pv_rtpengine_index(pv_spec_p sp, str *in)
{
pv_elem_t *format;
if (!in || in->s == NULL || in->len == 0 || sp == NULL)
return -1;
LM_DBG("index %p with name <%.*s>\n", &sp->pvp.pvi, in->len, in->s);
if (pv_parse_format(in, &format)!=0) {
LM_ERR("failed to parse statistic name format <%.*s> \n",
in->len,in->s);
return -1;
}
if (format->next==NULL && format->spec.type==PVT_NONE) {
sp->pvp.pvi.type = PVE_NAME_INTSTR;
sp->pvp.pvi.u.dval = pkg_malloc(sizeof(str));
if (!sp->pvp.pvi.u.dval) {
LM_ERR("no more pkg for index!\n");
return -1;
}
*(str *)(sp->pvp.pvi.u.dval) = *in;
} else {
sp->pvp.pvi.type = PVE_NAME_PVAR;
sp->pvp.pvi.u.dval = (char*)(void*)format;
}
return 0;
}
static pv_export_t mod_pvs[] = {
{{"rtpstat", (sizeof("rtpstat")-1)}, /* RTP-Statistics */
1000, pv_get_rtpstat_f, 0, pv_parse_rtpstat,
pv_rtpengine_index, pv_rtpengine_stats_used, 0},
{{"rtpquery", (sizeof("rtpquery")-1)},
1000, pv_get_rtpquery_f, 0, 0, 0, pv_rtpengine_stats_used, 0},
{{0, 0}, 0, 0, 0, 0, 0, 0, 0}
};
static param_export_t params[] = {
{"rtpengine_sock", STR_PARAM|USE_FUNC_PARAM,
(void*)rtpengine_set_store },
{"rtpengine_disable_tout", INT_PARAM, &rtpengine_disable_tout },
{"rtpengine_retr", INT_PARAM, &rtpengine_retr },
{"rtpengine_tout", INT_PARAM, &rtpengine_tout },
{"extra_id_pv", STR_PARAM, &extra_id_pv_param.s },
{"setid_avp", STR_PARAM, &setid_avp_param },
{"db_url", STR_PARAM, &db_url.s },
{"db_table", STR_PARAM, &db_table.s },
{"socket_column", STR_PARAM, &db_rtpe_sock_col.s },
{"set_column", STR_PARAM, &db_rtpe_set_col.s },
{0, 0, 0}
};
static mi_export_t mi_cmds[] = {
{ MI_ENABLE_RTP_ENGINE, 0, 0, 0, {
{mi_enable_rtp_proxy, {"url", "enable", 0}},
{EMPTY_MI_RECIPE}}
},
{ MI_SHOW_RTP_ENGINES, 0, 0, 0, {
{mi_show_rtpengines, {0}},
{EMPTY_MI_RECIPE}}
},
{ MI_RELOAD_RTP_ENGINES, 0, 0, mi_child_init, {
{mi_reload_rtpengines, {0}},
{EMPTY_MI_RECIPE}}
},
{ "teardown", 0, 0, 0, {
{mi_teardown_call, {"url", 0}},
{EMPTY_MI_RECIPE}}
},
{EMPTY_MI_EXPORT}
};
static dep_export_t deps = {
{ /* OpenSIPS module dependencies */
{ MOD_TYPE_DEFAULT, "tm", DEP_SILENT },
{ MOD_TYPE_NULL, NULL, 0 },
},
{ /* modparam dependencies */
{ "db_url", get_deps_sqldb_url },
{ NULL, NULL },
},
};
struct module_exports exports = {
"rtpengine",
MOD_TYPE_DEFAULT,/* class of this module */
MODULE_VERSION,
DEFAULT_DLFLAGS, /* dlopen flags */
0, /* load function */
&deps, /* OpenSIPS module dependencies */
cmds,
0,
params,
0, /* exported statistics */
mi_cmds, /* exported MI functions */
mod_pvs, /* exported pseudo-variables */
0, /* exported transformations */
0, /* extra processes */
mod_init,
0, /* reply processing */
mod_destroy, /* destroy function */
child_init,
0 /* reload confirm function */
};
int msg_has_sdp(struct sip_msg *msg)
{
str body;
struct body_part *p;
if(parse_headers(msg, HDR_CONTENTLENGTH_F,0) < 0) {
LM_ERR("cannot parse cseq header\n");
return 0;
}
body.len = get_content_length(msg);
if (!body.len)
return 0;
if (parse_sip_body(msg)<0 || msg->body==NULL) {
LM_DBG("no body found\n");
return 0;
}
for (p = &msg->body->first; p; p = p->next) {
if ( is_body_part_received(p) &&
p->mime == ((TYPE_APPLICATION << 16) + SUBTYPE_SDP) )
return 1;
}
return 0;
}
static void rtpe_stats_free(struct rtpe_stats *stats)
{
if (stats->json.s)
cJSON_PurgeString(stats->json.s);
bencode_buffer_free(&stats->buf);
}
static void rtpe_ctx_free(void *param)
{
struct rtpe_ctx *ctx = (struct rtpe_ctx *)param;
if (ctx) {
if (ctx->stats) {
rtpe_stats_free(ctx->stats);
pkg_free(ctx->stats);
}
pkg_free(ctx);
}
}
static inline struct rtpe_ctx *rtpe_ctx_get(void)
{
struct rtpe_ctx *ctx = rtpe_ctx_tryget();
if (!ctx) {
if (!current_processing_ctx) {
LM_ERR("no processing ctx found - cannot use rtpengine context!\n");
return NULL;
}
ctx = pkg_malloc(sizeof(*ctx));
if (!ctx) {
LM_ERR("not enough pkg memory!\n");
return NULL;
}
memset(ctx, 0, sizeof(*ctx));
rtpe_ctx_set(ctx);
}
return ctx;
}
static inline void rtpe_ctx_set_fill(struct rtpe_set *set)
{
struct rtpe_ctx *ctx = rtpe_ctx_get();
if (ctx)
ctx->set = set;
}
static inline struct rtpe_set *rtpe_ctx_set_get(void)
{
struct rtpe_ctx *ctx = rtpe_ctx_tryget();
return ctx ? ctx->set: NULL;
}
static inline int str_eq(const str *p, const char *q) {
int l = strlen(q);
if (p->len != l)
return 0;
if (memcmp(p->s, q, l))
return 0;
return 1;
}
static int rtpengine_set_store(modparam_t type, void * val){
char * p;
int len;
p = (char* )val;
if(p==0 || *p=='\0'){
return 0;
}
if(rtpe_sets==0){
rtpe_strings = (char**)pkg_malloc(sizeof(char*));
if(!rtpe_strings){
LM_ERR("no pkg memory left\n");
return -1;
}
} else {/*realloc to make room for the current set*/
rtpe_strings = (char**)pkg_realloc(rtpe_strings,
(rtpe_sets+1)* sizeof(char*));
if(!rtpe_strings){
LM_ERR("no pkg memory left\n");
return -1;
}
}
/*allocate for the current set of urls*/
len = strlen(p);
rtpe_strings[rtpe_sets] = (char*)pkg_malloc((len+1)*sizeof(char));
if(!rtpe_strings[rtpe_sets]){
LM_ERR("no pkg memory left\n");
return -1;
}
memcpy(rtpe_strings[rtpe_sets], p, len);
rtpe_strings[rtpe_sets][len] = '\0';
rtpe_sets++;
return 0;
}
static int add_rtpengine_socks(struct rtpe_set * rtpe_list,
char * rtpengine){
/* Make rtp proxies list. */
char *p, *p1, *p2, *plim;
struct rtpe_node *pnode;
int weight;
p = rtpengine;
plim = p + strlen(p);
for(;;) {
weight = 1;
while (*p && isspace((int)*p))
++p;
if (p >= plim)
break;
p1 = p;
while (*p && !isspace((int)*p))
++p;
if (p <= p1)
break; /* may happen??? */
/* Have weight specified? If yes, scan it */
p2 = memchr(p1, '=', p - p1);
if (p2 != NULL) {
weight = strtoul(p2 + 1, NULL, 10);
} else {
p2 = p;
}
pnode = shm_malloc(sizeof(struct rtpe_node));
if (pnode == NULL) {
LM_ERR("no shm memory left\n");
return -1;
}
memset(pnode, 0, sizeof(*pnode));
pnode->idx = (*rtpe_no)++;
pnode->rn_recheck_ticks = 0;
pnode->rn_weight = weight;
pnode->rn_umode = 0;
pnode->rn_disabled = 0;
pnode->rn_url.s = shm_malloc(p2 - p1 + 1);
if (pnode->rn_url.s == NULL) {
shm_free(pnode);
LM_ERR("no shm memory left\n");
return -1;
}
memmove(pnode->rn_url.s, p1, p2 - p1);
pnode->rn_url.s[p2 - p1] = 0;
pnode->rn_url.len = p2-p1;
LM_DBG("url is %s, len is %i\n", pnode->rn_url.s, pnode->rn_url.len);
/* Leave only address in rn_address */
pnode->rn_address = pnode->rn_url.s;
if (strncasecmp(pnode->rn_address, "udp:", 4) == 0) {
pnode->rn_umode = 1;
pnode->rn_address += 4;
} else if (strncasecmp(pnode->rn_address, "udp6:", 5) == 0) {
pnode->rn_umode = 6;
pnode->rn_address += 5;
} else if (strncasecmp(pnode->rn_address, "unix:", 5) == 0) {
pnode->rn_umode = 0;
pnode->rn_address += 5;
}
if (rtpe_list->rn_first == NULL) {
rtpe_list->rn_first = pnode;
} else {
rtpe_list->rn_last->rn_next = pnode;
}
rtpe_list->rn_last = pnode;
rtpe_list->rtpe_node_count++;
}
return 0;
}
/* 0-succes
* -1 - erorr
* */
static int rtpengine_add_rtpengine_set( char * rtp_proxies, int set_id)
{
char *p,*p2;
struct rtpe_set * rtpe_list;
unsigned int my_current_id;
str id_set;
int new_list;
/* empty definition? */
p= rtp_proxies;
if(!p || *p=='\0'){
return 0;
}
for(;*p && isspace(*p);p++);
if(*p=='\0'){
return 0;
}
if (set_id < 0) {
rtp_proxies = strstr(p, "==");
if(rtp_proxies){
if(*(rtp_proxies +2)=='\0'){
LM_ERR("script error -invalid rtp proxy list!\n");
return -1;
}
*rtp_proxies = '\0';
p2 = rtp_proxies-1;
for(;isspace(*p2); *p2 = '\0',p2--);
id_set.s = p; id_set.len = p2 - p+1;
if(id_set.len <= 0 ||str2int(&id_set, &my_current_id)<0 ){
LM_ERR("script error -invalid set_id value!\n");
return -1;
}
rtp_proxies+=2;
}else{
rtp_proxies = p;
my_current_id = DEFAULT_RTPE_SET_ID;
}
} else {
rtp_proxies = p;
my_current_id = set_id;
}
for(;*rtp_proxies && isspace(*rtp_proxies);rtp_proxies++);
if(!(*rtp_proxies)){
LM_ERR("script error -empty rtp_proxy list\n");
return -1;;
}
/*search for the current_id*/
rtpe_list = (*rtpe_set_list) ? (*rtpe_set_list)->rset_first : 0;
while( rtpe_list != 0 && rtpe_list->id_set!=my_current_id)
rtpe_list = rtpe_list->rset_next;
if(rtpe_list==NULL){ /*if a new id_set : add a new set of rtpe*/
rtpe_list = shm_malloc(sizeof(struct rtpe_set));
if(!rtpe_list){
LM_ERR("no shm memory left\n");
return -1;
}
memset(rtpe_list, 0, sizeof(struct rtpe_set));
rtpe_list->id_set = my_current_id;
new_list = 1;
} else {
new_list = 0;
}
if(add_rtpengine_socks(rtpe_list, rtp_proxies)!= 0){
/*if this list will not be inserted, clean it up*/
goto error;
}
if (new_list) {
if(!(*rtpe_set_list)){/*initialize the list of set*/
*rtpe_set_list = shm_malloc(sizeof(struct rtpe_set_head));
if(!(*rtpe_set_list)){
LM_ERR("no shm memory left\n");
return -1;
}
memset(*rtpe_set_list, 0, sizeof(struct rtpe_set_head));
}
/*update the list of set info*/
if(!(*rtpe_set_list)->rset_first){
(*rtpe_set_list)->rset_first = rtpe_list;
}else{
(*rtpe_set_list)->rset_last->rset_next = rtpe_list;
}
(*rtpe_set_list)->rset_last = rtpe_list;
rtpe_set_count++;
}
return 0;
error:
return -1;
}
static int fixup_set_id(void ** param)
{
struct rtpe_set* rtpe_list;
rtpe_set_link_t *rtpl = NULL;
rtpl = (rtpe_set_link_t*)pkg_malloc(sizeof(rtpe_set_link_t));
if(rtpl==NULL) {
LM_ERR("no more pkg memory\n");
return -1;
}
memset(rtpl, 0, sizeof(rtpe_set_link_t));
if((rtpe_list = select_rtpe_set(*(int*)*param)) ==0){
rtpl->type = RTPE_SET_NONE;
rtpl->v.id = *(int*)*param;
} else {
rtpl->type = RTPE_SET_FIXED;
rtpl->v.rset = rtpe_list;
}
*param = (void*)rtpl;
return 0;
}
static int fixup_free_set_id(void **param)
{
pkg_free(*param);
return 0;
}
static mi_response_t *mi_enable_rtp_proxy(const mi_params_t *params,
struct mi_handler *async_hdl)
{