/
rtpengine.c
2118 lines (1791 loc) · 51.2 KB
/
rtpengine.c
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/*
* Copyright (C) 2003-2008 Sippy Software, Inc., http://www.sippysoft.com
* Copyright (C) 2014-2015 Sipwise GmbH, http://www.sipwise.com
*
* This file is part of Kamailio, a free SIP server.
*
* Kamailio 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
*
* Kamailio 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 <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 "../../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 "../../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 "../../timer_proc.h"
#include "../../lib/kmi/mi.h"
#include "../../pvar.h"
#include "../../lvalue.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 "rtpengine.h"
#include "rtpengine_funcs.h"
#include "bencode.h"
MODULE_VERSION
#if !defined(AF_LOCAL)
#define AF_LOCAL AF_UNIX
#endif
#if !defined(PF_LOCAL)
#define PF_LOCAL PF_UNIX
#endif
/* NAT UAC test constants */
#define NAT_UAC_TEST_C_1918 0x01
#define NAT_UAC_TEST_RCVD 0x02
#define NAT_UAC_TEST_V_1918 0x04
#define NAT_UAC_TEST_S_1918 0x08
#define NAT_UAC_TEST_RPORT 0x10
#define DEFAULT_RTPP_SET_ID 0
#define MI_SET_NATPING_STATE "nh_enable_ping"
#define MI_DEFAULT_NATPING_STATE 1
#define MI_ENABLE_RTP_PROXY "nh_enable_rtpp"
#define MI_MIN_RECHECK_TICKS 0
#define MI_MAX_RECHECK_TICKS (unsigned int)-1
#define MI_SHOW_RTP_PROXIES "nh_show_rtpp"
#define MI_RTP_PROXY_NOT_FOUND "RTP proxy not found"
#define MI_RTP_PROXY_NOT_FOUND_LEN (sizeof(MI_RTP_PROXY_NOT_FOUND)-1)
#define MI_PING_DISABLED "NATping disabled from script"
#define MI_PING_DISABLED_LEN (sizeof(MI_PING_DISABLED)-1)
#define MI_SET "set"
#define MI_SET_LEN (sizeof(MI_SET)-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"
enum rtpe_operation {
OP_OFFER = 1,
OP_ANSWER,
OP_DELETE,
OP_START_RECORDING,
OP_QUERY,
};
struct ng_flags_parse {
int via, to, packetize, transport;
bencode_item_t *dict, *flags, *direction, *replace, *rtcp_mux;
};
static const char *command_strings[] = {
[OP_OFFER] = "offer",
[OP_ANSWER] = "answer",
[OP_DELETE] = "delete",
[OP_START_RECORDING] = "start recording",
[OP_QUERY] = "query",
};
static char *gencookie();
static int rtpp_test(struct rtpp_node*, int, int);
static int start_recording_f(struct sip_msg *, char *, char *);
static int rtpengine_answer1_f(struct sip_msg *, char *, char *);
static int rtpengine_offer1_f(struct sip_msg *, char *, char *);
static int rtpengine_delete1_f(struct sip_msg *, char *, char *);
static int rtpengine_manage1_f(struct sip_msg *, char *, char *);
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, const char *flags, int op, int more);
static int fixup_set_id(void ** param, int param_no);
static int set_rtpengine_set_f(struct sip_msg * msg, char * str1, char * str2);
static struct rtpp_set * select_rtpp_set(int id_set);
static struct rtpp_node *select_rtpp_node(str, int);
static char *send_rtpp_command(struct rtpp_node *, bencode_item_t *, int *);
static int get_extra_id(struct sip_msg* msg, str *id_str);
static int rtpengine_set_store(modparam_t type, void * val);
static int rtpengine_add_rtpengine_set( char * rtp_proxies);
static int mod_init(void);
static int child_init(int);
static void mod_destroy(void);
/* Pseudo-Variables */
static int pv_get_rtpstat_f(struct sip_msg *, pv_param_t *, pv_value_t *);
/*mi commands*/
static struct mi_root* mi_enable_rtp_proxy(struct mi_root* cmd_tree,
void* param );
static struct mi_root* mi_show_rtpproxies(struct mi_root* cmd_tree,
void* param);
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 ** rtpp_strings=0;
static int rtpp_sets=0; /*used in rtpengine_set_store()*/
static int rtpp_set_count = 0;
static unsigned int current_msg_id = (unsigned int)-1;
/* RTP proxy balancing list */
static struct rtpp_set_head * rtpp_set_list =0;
static struct rtpp_set * active_rtpp_set =0;
static struct rtpp_set * selected_rtpp_set_1 =0;
static struct rtpp_set * selected_rtpp_set_2 =0;
static struct rtpp_set * default_rtpp_set=0;
static str body_intermediate;
static str rtp_inst_pv_param = {NULL, 0};
static pv_spec_t *rtp_inst_pvar = NULL;
/* array with the sockets used by rtpporxy (per process)*/
static unsigned int rtpp_no = 0;
static int *rtpp_socks = 0;
static int setid_avp_type;
static int_str setid_avp;
static str write_sdp_pvar_str = {NULL, 0};
static pv_spec_t* write_sdp_pvar = NULL;
char* force_send_ip_str="";
typedef struct rtpp_set_link {
struct rtpp_set *rset;
pv_spec_t *rpv;
} rtpp_set_link_t;
/* tm */
static struct tm_binds tmb;
/*0-> disabled, 1 ->enabled*/
unsigned int *natping_state=0;
static pv_elem_t *extra_id_pv = NULL;
static cmd_export_t cmds[] = {
{"set_rtpengine_set", (cmd_function)set_rtpengine_set_f, 1,
fixup_set_id, 0,
ANY_ROUTE},
{"set_rtpengine_set", (cmd_function)set_rtpengine_set_f, 2,
fixup_set_id, 0,
ANY_ROUTE},
{"start_recording", (cmd_function)start_recording_f, 0,
0, 0,
ANY_ROUTE },
{"rtpengine_offer", (cmd_function)rtpengine_offer1_f, 0,
0, 0,
ANY_ROUTE},
{"rtpengine_offer", (cmd_function)rtpengine_offer1_f, 1,
fixup_spve_null, 0,
ANY_ROUTE},
{"rtpengine_answer", (cmd_function)rtpengine_answer1_f, 0,
0, 0,
ANY_ROUTE},
{"rtpengine_answer", (cmd_function)rtpengine_answer1_f, 1,
fixup_spve_null, 0,
ANY_ROUTE},
{"rtpengine_manage", (cmd_function)rtpengine_manage1_f, 0,
0, 0,
ANY_ROUTE},
{"rtpengine_manage", (cmd_function)rtpengine_manage1_f, 1,
fixup_spve_null, 0,
ANY_ROUTE},
{"rtpengine_delete", (cmd_function)rtpengine_delete1_f, 0,
0, 0,
ANY_ROUTE},
{"rtpengine_delete", (cmd_function)rtpengine_delete1_f, 1,
fixup_spve_null, 0,
ANY_ROUTE},
{0, 0, 0, 0, 0, 0}
};
static pv_export_t mod_pvs[] = {
{{"rtpstat", (sizeof("rtpstat")-1)}, /* RTP-Statistics */
PVT_OTHER, pv_get_rtpstat_f, 0, 0, 0, 0, 0},
{{0, 0}, 0, 0, 0, 0, 0, 0, 0}
};
static param_export_t params[] = {
{"rtpengine_sock", PARAM_STRING|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 },
{"db_url", PARAM_STR, &rtpp_db_url },
{"table_name", PARAM_STR, &rtpp_table_name },
{"url_col", PARAM_STR, &rtpp_url_col },
{"extra_id_pv", PARAM_STR, &extra_id_pv_param },
{"setid_avp", PARAM_STRING, &setid_avp_param },
{"force_send_interface", PARAM_STRING, &force_send_ip_str },
{"rtp_inst_pvar", PARAM_STR, &rtp_inst_pv_param },
{"write_sdp_pv", PARAM_STR, &write_sdp_pvar_str },
{0, 0, 0}
};
static mi_export_t mi_cmds[] = {
{MI_ENABLE_RTP_PROXY, mi_enable_rtp_proxy, 0, 0, 0},
{MI_SHOW_RTP_PROXIES, mi_show_rtpproxies, MI_NO_INPUT_FLAG, 0, 0},
{ 0, 0, 0, 0, 0}
};
struct module_exports exports = {
"rtpengine",
DEFAULT_DLFLAGS, /* dlopen flags */
cmds,
params,
0, /* exported statistics */
mi_cmds, /* exported MI functions */
mod_pvs, /* exported pseudo-variables */
0, /* extra processes */
mod_init,
0, /* reply processing */
mod_destroy, /* destroy function */
child_init
};
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 inline str str_prefix(const str *p, const char *q) {
str ret;
ret.s = NULL;
int l = strlen(q);
if (p->len < l)
return ret;
if (memcmp(p->s, q, l))
return ret;
ret = *p;
ret.s += l;
ret.len -= l;
return ret;
}
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(rtpp_sets==0){
rtpp_strings = (char**)pkg_malloc(sizeof(char*));
if(!rtpp_strings){
LM_ERR("no pkg memory left\n");
return -1;
}
} else {/*realloc to make room for the current set*/
rtpp_strings = (char**)pkg_realloc(rtpp_strings,
(rtpp_sets+1)* sizeof(char*));
if(!rtpp_strings){
LM_ERR("no pkg memory left\n");
return -1;
}
}
/*allocate for the current set of urls*/
len = strlen(p);
rtpp_strings[rtpp_sets] = (char*)pkg_malloc((len+1)*sizeof(char));
if(!rtpp_strings[rtpp_sets]){
LM_ERR("no pkg memory left\n");
return -1;
}
memcpy(rtpp_strings[rtpp_sets], p, len);
rtpp_strings[rtpp_sets][len] = '\0';
rtpp_sets++;
return 0;
}
struct rtpp_set *get_rtpp_set(int set_id)
{
struct rtpp_set * rtpp_list;
unsigned int my_current_id = 0;
int new_list;
if (set_id < DEFAULT_RTPP_SET_ID )
{
LM_ERR(" invalid rtpproxy set value [%d]\n",
set_id);
return NULL;
}
my_current_id = set_id;
/*search for the current_id*/
rtpp_list = rtpp_set_list ? rtpp_set_list->rset_first : 0;
while( rtpp_list != 0 && rtpp_list->id_set!=my_current_id)
rtpp_list = rtpp_list->rset_next;
if (rtpp_list==NULL)
{ /*if a new id_set : add a new set of rtpp*/
rtpp_list = shm_malloc(sizeof(struct rtpp_set));
if(!rtpp_list)
{
LM_ERR("no shm memory left to create new rtpproxy set %d\n", my_current_id);
return NULL;
}
memset(rtpp_list, 0, sizeof(struct rtpp_set));
rtpp_list->id_set = my_current_id;
new_list = 1;
}
else {
new_list = 0;
}
if (new_list)
{
if(!rtpp_set_list){/*initialize the list of set*/
rtpp_set_list = shm_malloc(sizeof(struct rtpp_set_head));
if(!rtpp_set_list){
LM_ERR("no shm memory left to create list of proxysets\n");
return NULL;
}
memset(rtpp_set_list, 0, sizeof(struct rtpp_set_head));
}
/*update the list of set info*/
if (!rtpp_set_list->rset_first)
{
rtpp_set_list->rset_first = rtpp_list;
}
else
{
rtpp_set_list->rset_last->rset_next = rtpp_list;
}
rtpp_set_list->rset_last = rtpp_list;
rtpp_set_count++;
if(my_current_id == DEFAULT_RTPP_SET_ID){
default_rtpp_set = rtpp_list;
}
}
return rtpp_list;
}
int add_rtpengine_socks(struct rtpp_set * rtpp_list, char * rtpproxy)
{
/* Make rtp proxies list. */
char *p, *p1, *p2, *plim;
struct rtpp_node *pnode;
int weight;
p = rtpproxy;
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 rtpp_node));
if (pnode == NULL) {
LM_ERR("no shm memory left\n");
return -1;
}
memset(pnode, 0, sizeof(*pnode));
pnode->idx = rtpp_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;
/* 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 (rtpp_list->rn_first == NULL) {
rtpp_list->rn_first = pnode;
} else {
rtpp_list->rn_last->rn_next = pnode;
}
rtpp_list->rn_last = pnode;
rtpp_list->rtpp_node_count++;
}
return 0;
}
/* 0-succes
* -1 - erorr
* */
static int rtpengine_add_rtpengine_set( char * rtp_proxies)
{
char *p,*p2;
struct rtpp_set * rtpp_list;
unsigned int my_current_id;
str id_set;
/* empty definition? */
p= rtp_proxies;
if(!p || *p=='\0'){
return 0;
}
for(;*p && isspace(*p);p++);
if(*p=='\0'){
return 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_RTPP_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*/
rtpp_list = get_rtpp_set(my_current_id);
if (rtpp_list != NULL)
{
if (add_rtpengine_socks(rtpp_list, rtp_proxies) != 0)
goto error;
else
return 0;
}
error:
return -1;
}
static int fixup_set_id(void ** param, int param_no)
{
int int_val, err;
struct rtpp_set* rtpp_list;
rtpp_set_link_t *rtpl = NULL;
str s;
rtpl = (rtpp_set_link_t*)pkg_malloc(sizeof(rtpp_set_link_t));
if(rtpl==NULL) {
LM_ERR("no more pkg memory\n");
return -1;
}
memset(rtpl, 0, sizeof(rtpp_set_link_t));
s.s = (char*)*param;
s.len = strlen(s.s);
if(s.s[0] == PV_MARKER) {
int_val = pv_locate_name(&s);
if(int_val<0 || int_val!=s.len) {
LM_ERR("invalid parameter %s\n", s.s);
return -1;
}
rtpl->rpv = pv_cache_get(&s);
if(rtpl->rpv == NULL) {
LM_ERR("invalid pv parameter %s\n", s.s);
return -1;
}
} else {
int_val = str2s(*param, strlen(*param), &err);
if (err == 0) {
pkg_free(*param);
if((rtpp_list = select_rtpp_set(int_val)) ==0){
LM_ERR("rtpp_proxy set %i not configured\n", int_val);
return E_CFG;
}
rtpl->rset = rtpp_list;
} else {
LM_ERR("bad number <%s>\n", (char *)(*param));
return E_CFG;
}
}
*param = (void*)rtpl;
return 0;
}
static struct mi_root* mi_enable_rtp_proxy(struct mi_root* cmd_tree,
void* param )
{ struct mi_node* node;
str rtpp_url;
unsigned int enable;
struct rtpp_set * rtpp_list;
struct rtpp_node * crt_rtpp;
int found;
found = 0;
if(rtpp_set_list ==NULL)
goto end;
node = cmd_tree->node.kids;
if(node == NULL)
return init_mi_tree( 400, MI_MISSING_PARM_S, MI_MISSING_PARM_LEN);
if(node->value.s == NULL || node->value.len ==0)
return init_mi_tree( 400, MI_BAD_PARM_S, MI_BAD_PARM_LEN);
rtpp_url = node->value;
node = node->next;
if(node == NULL)
return init_mi_tree( 400, MI_MISSING_PARM_S, MI_MISSING_PARM_LEN);
enable = 0;
if( strno2int( &node->value, &enable) <0)
goto error;
for(rtpp_list = rtpp_set_list->rset_first; rtpp_list != NULL;
rtpp_list = rtpp_list->rset_next){
for(crt_rtpp = rtpp_list->rn_first; crt_rtpp != NULL;
crt_rtpp = crt_rtpp->rn_next){
/*found a matching rtpp*/
if(crt_rtpp->rn_url.len == rtpp_url.len){
if(strncmp(crt_rtpp->rn_url.s, rtpp_url.s, rtpp_url.len) == 0){
/*set the enabled/disabled status*/
found = 1;
crt_rtpp->rn_recheck_ticks =
enable? MI_MIN_RECHECK_TICKS : MI_MAX_RECHECK_TICKS;
crt_rtpp->rn_disabled = enable?0:1;
}
}
}
}
end:
if(found)
return init_mi_tree( 200, MI_OK_S, MI_OK_LEN);
return init_mi_tree(404,MI_RTP_PROXY_NOT_FOUND,MI_RTP_PROXY_NOT_FOUND_LEN);
error:
return init_mi_tree( 400, MI_BAD_PARM_S, MI_BAD_PARM_LEN);
}
#define add_rtpp_node_int_info(_parent, _name, _name_len, _value, _child,\
_len, _string, _error)\
do {\
(_string) = int2str((_value), &(_len));\
if((_string) == 0){\
LM_ERR("cannot convert int value\n");\
goto _error;\
}\
if(((_child) = add_mi_node_child((_parent), MI_DUP_VALUE, (_name), \
(_name_len), (_string), (_len)) ) == 0)\
goto _error;\
}while(0);
static struct mi_root* mi_show_rtpproxies(struct mi_root* cmd_tree,
void* param)
{
struct mi_node* node, *crt_node, *child;
struct mi_root* root;
struct mi_attr * attr;
struct rtpp_set * rtpp_list;
struct rtpp_node * crt_rtpp;
char * string, *id;
int id_len, len;
string = id = 0;
root = init_mi_tree(200, MI_OK_S, MI_OK_LEN);
if (!root) {
LM_ERR("the MI tree cannot be initialized!\n");
return 0;
}
if(rtpp_set_list ==NULL)
return root;
node = &root->node;
for(rtpp_list = rtpp_set_list->rset_first; rtpp_list != NULL;
rtpp_list = rtpp_list->rset_next){
for(crt_rtpp = rtpp_list->rn_first; crt_rtpp != NULL;
crt_rtpp = crt_rtpp->rn_next){
id = int2str(rtpp_list->id_set, &id_len);
if(!id){
LM_ERR("cannot convert set id\n");
goto error;
}
if(!(crt_node = add_mi_node_child(node, 0, crt_rtpp->rn_url.s,
crt_rtpp->rn_url.len, 0,0)) ) {
LM_ERR("cannot add the child node to the tree\n");
goto error;
}
LM_DBG("adding node name %s \n",crt_rtpp->rn_url.s );
if((attr = add_mi_attr(crt_node, MI_DUP_VALUE, MI_SET, MI_SET_LEN,
id, id_len))== 0){
LM_ERR("cannot add attributes to the node\n");
goto error;
}
add_rtpp_node_int_info(crt_node, MI_INDEX, MI_INDEX_LEN,
crt_rtpp->idx, child, len,string,error);
add_rtpp_node_int_info(crt_node, MI_DISABLED, MI_DISABLED_LEN,
crt_rtpp->rn_disabled, child, len,string,error);
add_rtpp_node_int_info(crt_node, MI_WEIGHT, MI_WEIGHT_LEN,
crt_rtpp->rn_weight, child, len, string,error);
add_rtpp_node_int_info(crt_node, MI_RECHECK_TICKS,MI_RECHECK_T_LEN,
crt_rtpp->rn_recheck_ticks, child, len, string, error);
}
}
return root;
error:
if (root)
free_mi_tree(root);
return 0;
}
static int
mod_init(void)
{
int i;
pv_spec_t *avp_spec;
unsigned short avp_flags;
str s;
unsigned char ip_buff[sizeof(struct in6_addr)];
if(register_mi_mod(exports.name, mi_cmds)!=0)
{
LM_ERR("failed to register MI commands\n");
return -1;
}
/* any rtpproxy configured? */
if(rtpp_set_list)
default_rtpp_set = select_rtpp_set(DEFAULT_RTPP_SET_ID);
if (rtpp_db_url.s == NULL)
{
/* storing the list of rtp proxy sets in shared memory*/
for(i=0;i<rtpp_sets;i++){
if(rtpengine_add_rtpengine_set(rtpp_strings[i]) !=0){
for(;i<rtpp_sets;i++)
if(rtpp_strings[i])
pkg_free(rtpp_strings[i]);
pkg_free(rtpp_strings);
return -1;
}
if(rtpp_strings[i])
pkg_free(rtpp_strings[i]);
}
}
else
{
LM_INFO("Loading rtp proxy definitions from DB\n");
if ( init_rtpproxy_db() < 0)
{
LM_ERR("error while loading rtp proxies from database\n");
return -1;
}
}
if (rtp_inst_pv_param.s) {
rtp_inst_pv_param.len = strlen(rtp_inst_pv_param.s);
rtp_inst_pvar = pv_cache_get(&rtp_inst_pv_param);
if ((rtp_inst_pvar == NULL) ||
((rtp_inst_pvar->type != PVT_AVP) &&
(rtp_inst_pvar->type != PVT_XAVP) &&
(rtp_inst_pvar->type != PVT_SCRIPTVAR))) {
LM_ERR("Invalid pvar name <%.*s>\n", rtp_inst_pv_param.len, rtp_inst_pv_param.s);
return -1;
}
}
if (extra_id_pv_param.s && *extra_id_pv_param.s) {
extra_id_pv_param.len = strlen(extra_id_pv_param.s);
if(pv_parse_format(&extra_id_pv_param, &extra_id_pv) < 0) {
LM_ERR("malformed PV string: %s\n", extra_id_pv_param.s);
return -1;
}
} else {
extra_id_pv = NULL;
}
if (setid_avp_param) {
s.s = setid_avp_param; s.len = strlen(s.s);
avp_spec = pv_cache_get(&s);
if (avp_spec==NULL || (avp_spec->type != PVT_AVP)) {
LM_ERR("malformed or non AVP definition <%s>\n",
setid_avp_param);
return -1;
}
if (pv_get_avp_name(0, &(avp_spec->pvp), &setid_avp,
&avp_flags) != 0) {
LM_ERR("invalid AVP definition <%s>\n", setid_avp_param);
return -1;
}
setid_avp_type = avp_flags;
}
if (write_sdp_pvar_str.len > 0) {
write_sdp_pvar = pv_cache_get(&write_sdp_pvar_str);
if (write_sdp_pvar == NULL
|| (write_sdp_pvar->type != PVT_AVP && write_sdp_pvar->type != PVT_SCRIPTVAR) ) {
LM_ERR("write_sdp_pv: not a valid AVP or VAR definition <%.*s>\n",
write_sdp_pvar_str.len, write_sdp_pvar_str.s);
return -1;
}
}
if (rtpp_strings)
pkg_free(rtpp_strings);
if (load_tm_api( &tmb ) < 0)
{
LM_DBG("could not load the TM-functions - answer-offer model"
" auto-detection is disabled\n");
memset(&tmb, 0, sizeof(struct tm_binds));
}
if ( 0 != strlen(force_send_ip_str)) {
if ( inet_pton(AF_INET, force_send_ip_str, ip_buff) <= 0) {
LM_ERR("Invalid IP address for force_send_interface <%s>\n", force_send_ip_str);
return -1;
}
}
return 0;
}
static int
child_init(int rank)
{
int n;
char *cp;
struct addrinfo hints, *res;
struct rtpp_set *rtpp_list;
struct rtpp_node *pnode;
struct sockaddr_in tmp, ip4addr;
socklen_t sock_len = sizeof(struct sockaddr);
if(rtpp_set_list==NULL )
return 0;
/* Iterate known RTP proxies - create sockets */
mypid = getpid();
rtpp_socks = (int*)pkg_malloc( sizeof(int)*rtpp_no );
if (rtpp_socks==NULL) {
LM_ERR("no more pkg memory\n");
return -1;
}
for(rtpp_list = rtpp_set_list->rset_first; rtpp_list != 0;
rtpp_list = rtpp_list->rset_next){
for (pnode=rtpp_list->rn_first; pnode!=0; pnode = pnode->rn_next){
char *hostname;
if (pnode->rn_umode == 0) {
rtpp_socks[pnode->idx] = -1;
goto rptest;
}
/*
* This is UDP or UDP6. Detect host and port; lookup host;
* do connect() in order to specify peer address
*/
hostname = (char*)pkg_malloc(sizeof(char) * (strlen(pnode->rn_address) + 1));
if (hostname==NULL) {
LM_ERR("no more pkg memory\n");
return -1;
}
strcpy(hostname, pnode->rn_address);
cp = strrchr(hostname, ':');
if (cp != NULL) {
*cp = '\0';
cp++;
}
if (cp == NULL || *cp == '\0')
cp = CPORT;
memset(&hints, 0, sizeof(hints));
hints.ai_flags = 0;
hints.ai_family = (pnode->rn_umode == 6) ? AF_INET6 : AF_INET;
hints.ai_socktype = SOCK_DGRAM;
if ((n = getaddrinfo(hostname, cp, &hints, &res)) != 0) {
LM_ERR("%s\n", gai_strerror(n));
pkg_free(hostname);
return -1;
}
pkg_free(hostname);
rtpp_socks[pnode->idx] = socket((pnode->rn_umode == 6)
? AF_INET6 : AF_INET, SOCK_DGRAM, 0);
if ( rtpp_socks[pnode->idx] == -1) {
LM_ERR("can't create socket\n");
freeaddrinfo(res);
return -1;
}
if (strlen(force_send_ip_str)!=0) {
memset(&ip4addr, 0, sizeof(ip4addr));
ip4addr.sin_family = AF_INET;
ip4addr.sin_port = htons(0);
inet_pton(AF_INET, force_send_ip_str, &ip4addr.sin_addr);
if (bind(rtpp_socks[pnode->idx], (struct sockaddr*)&ip4addr, sizeof(ip4addr)) <0) {
LM_ERR("can't bind socket to required interface \n");
close( rtpp_socks[pnode->idx] );
rtpp_socks[pnode->idx] = -1;
freeaddrinfo(res);
return -1;
}
memset(&tmp, 0, sizeof(tmp)); sock_len = sizeof(struct sockaddr);
getsockname(rtpp_socks[pnode->idx], (struct sockaddr *) &tmp, &sock_len);
LM_INFO("Binding on %s:%d\n", inet_ntoa(tmp.sin_addr), ntohs(tmp.sin_port));
}
if (connect( rtpp_socks[pnode->idx], res->ai_addr, res->ai_addrlen) == -1) {
LM_ERR("can't connect to a RTP proxy\n");
close( rtpp_socks[pnode->idx] );
rtpp_socks[pnode->idx] = -1;
freeaddrinfo(res);
return -1;
}
freeaddrinfo(res);
rptest:
pnode->rn_disabled = rtpp_test(pnode, 0, 1);
}
}
return 0;
}
static void mod_destroy(void)