/
b2b_logic.c
1687 lines (1484 loc) · 42 KB
/
b2b_logic.c
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/*
* back-to-back logic module
*
* Copyright (C) 2009 Free Software Fundation
*
* 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:
* --------
* 2009-08-03 initial version (Anca Vamanu)
* 2010-11-02 new mi function: mi_b2b_list (Ovidiu Sas)
* 2010-11-12 new cmd: b2b_bridge_request (Ovidiu Sas)
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <libxml/parser.h>
#include "../../db/db.h"
#include "../../sr_module.h"
#include "../../dprint.h"
#include "../../error.h"
#include "../../parser/parse_from.h"
#include "../../parser/parse_content.h"
#include "../../ut.h"
#include "../../trim.h"
#include "../../mem/mem.h"
#include "records.h"
#include "pidf.h"
#include "b2b_logic.h"
#include "b2b_load.h"
#include "b2bl_db.h"
#define TABLE_VERSION 3
/** Functions declarations */
static int mod_init(void);
static void mod_destroy(void);
static int child_init(int rank);
static int load_script_scenario(modparam_t type, void* val);
static int load_extern_scenario(modparam_t type, void* val);
static int fixup_b2b_logic(void** param);
static int fixup_free_b2b_logic(void** param);
static mi_response_t *mi_trigger_scenario(const mi_params_t *params,
struct mi_handler *async_hdl);
static mi_response_t *mi_b2b_bridge_2(const mi_params_t *params,
struct mi_handler *async_hdl);
static mi_response_t *mi_b2b_bridge_f(const mi_params_t *params,
struct mi_handler *async_hdl);
static mi_response_t *mi_b2b_bridge_pmu(const mi_params_t *params,
struct mi_handler *async_hdl);
static mi_response_t *mi_b2b_bridge_4(const mi_params_t *params,
struct mi_handler *async_hdl);
static mi_response_t *mi_b2b_list(const mi_params_t *params,
struct mi_handler *async_hdl);
static mi_response_t *mi_b2b_terminate_call(const mi_params_t *params,
struct mi_handler *async_hdl);
static void b2bl_clean(unsigned int ticks, void* param);
static void b2bl_db_timer_update(unsigned int ticks, void* param);
int b2b_init_request(struct sip_msg* msg, str* arg1, str* arg2, str* arg3,
str* arg4, str* arg5, str* arg6);
int b2b_bridge_request(struct sip_msg* msg, str *key, int *entity_no);
void b2b_mark_todel( b2bl_tuple_t* tuple);
/** Global variables */
b2b_api_t b2b_api;
b2bl_table_t b2bl_htable;
unsigned int b2bl_hsize = 10;
b2b_scenario_t* script_scenarios = NULL;
b2b_scenario_t* extern_scenarios = NULL;
unsigned int b2b_clean_period = 100;
unsigned int b2b_update_period = 100;
str custom_headers = {0, 0};
str custom_headers_lst[HDR_LST_LEN];
int custom_headers_lst_len =0;
str custom_headers_regexp = {0, 0};
regex_t* custom_headers_re;
/* The list of the headers that are passed on the other side by default */
static str default_headers[HDR_DEFAULT_LEN]=
{
{"Content-Type",12},
{"Supported", 9},
{"Allow", 5},
{"Proxy-Require", 13},
{"Session-Expires", 15},
{"Min-SE", 6},
{"Require", 7},
{"RSeq", 4},
};
int use_init_sdp = 0;
unsigned int max_duration = 12*3600;
int b2bl_key_avp_name;
unsigned short b2bl_key_avp_type;
static str b2bl_key_avp_param = {NULL, 0};
static str b2bl_from_spec_param = {NULL, 0};
static pv_spec_t b2bl_from_spec;
static pv_value_t b2bl_from_tok;
static struct to_body b2bl_from;
#define B2BL_FROM_BUF_LEN 255
static char b2bl_from_buf[B2BL_FROM_BUF_LEN + 1];
str db_url= {0, 0};
db_con_t *b2bl_db = NULL;
db_func_t b2bl_dbf;
str b2bl_dbtable= str_init("b2b_logic");
str init_callid_hdr={0, 0};
str server_address = {0, 0};
int b2bl_db_mode = WRITE_BACK;
int unsigned b2bl_th_init_timeout = 60;
static cmd_export_t cmds[]=
{
{"b2b_init_request", (cmd_function)b2b_init_request, {
{CMD_PARAM_STR, fixup_b2b_logic, fixup_free_b2b_logic},
{CMD_PARAM_STR|CMD_PARAM_OPT,0,0},
{CMD_PARAM_STR|CMD_PARAM_OPT,0,0},
{CMD_PARAM_STR|CMD_PARAM_OPT,0,0},
{CMD_PARAM_STR|CMD_PARAM_OPT,0,0}, {0,0,0}},
REQUEST_ROUTE},
{"b2b_bridge_request", (cmd_function)b2b_bridge_request,
{{CMD_PARAM_STR,0,0}, {CMD_PARAM_INT,0,0}, {0,0,0}},
REQUEST_ROUTE},
{"b2b_logic_bind", (cmd_function)b2b_logic_bind, {{0,0,0}}, 0},
{0,0,{{0,0,0}},0}
};
/** Exported parameters */
static param_export_t params[]=
{
{"hash_size", INT_PARAM, &b2bl_hsize },
{"cleanup_period", INT_PARAM, &b2b_clean_period },
{"update_period", INT_PARAM, &b2b_update_period },
{"script_scenario", STR_PARAM|USE_FUNC_PARAM, (void*)load_script_scenario},
{"extern_scenario", STR_PARAM|USE_FUNC_PARAM, (void*)load_extern_scenario},
{"custom_headers", STR_PARAM, &custom_headers.s },
{"custom_headers_regexp", STR_PARAM, &custom_headers_regexp.s },
{"use_init_sdp", INT_PARAM, &use_init_sdp },
{"db_url", STR_PARAM, &db_url.s },
{"db_table", STR_PARAM, &b2bl_dbtable.s },
{"max_duration", INT_PARAM, &max_duration },
/*
{"b2bl_key_avp", STR_PARAM, &b2bl_key_avp_param.s },
*/
{"b2bl_from_spec_param",STR_PARAM, &b2bl_from_spec_param.s },
{"server_address", STR_PARAM, &server_address.s },
{"init_callid_hdr", STR_PARAM, &init_callid_hdr.s },
{"db_mode", INT_PARAM, &b2bl_db_mode },
{"b2bl_th_init_timeout",INT_PARAM, &b2bl_th_init_timeout },
{0, 0, 0 }
};
static mi_export_t mi_cmds[] = {
{"b2b_trigger_scenario", 0, 0, 0, {
{mi_trigger_scenario, {"scenario_id", "scenario_params", 0}},
{EMPTY_MI_RECIPE}}
},
{"b2b_bridge", 0, 0, 0, {
{mi_b2b_bridge_2, {"dialog_id", "new_uri", 0}},
{mi_b2b_bridge_f, {"dialog_id", "new_uri", "flag", 0}},
{mi_b2b_bridge_pmu, {"dialog_id", "new_uri", "prov_media_uri", 0}},
{mi_b2b_bridge_4, {"dialog_id", "new_uri", "flag", "prov_media_uri", 0}},
{EMPTY_MI_RECIPE}}
},
{"b2b_list", 0, 0, 0, {
{mi_b2b_list, {0}},
{EMPTY_MI_RECIPE}}
},
{"b2b_terminate_call", 0, 0, 0, {
{mi_b2b_terminate_call, {0}},
{EMPTY_MI_RECIPE}}
},
{EMPTY_MI_EXPORT}
};
static dep_export_t deps = {
{ /* OpenSIPS module dependencies */
{ MOD_TYPE_DEFAULT, "b2b_entities", DEP_ABORT },
{ MOD_TYPE_NULL, NULL, 0 },
},
{ /* modparam dependencies */
{ "db_url", get_deps_sqldb_url },
{ NULL, NULL },
},
};
/** Module interface */
struct module_exports exports= {
"b2b_logic", /* module name */
MOD_TYPE_DEFAULT, /* class of this module */
MODULE_VERSION, /* module version */
DEFAULT_DLFLAGS, /* dlopen flags */
0, /* load function */
&deps, /* OpenSIPS module dependencies */
0, /* OpenSIPS dependencies function */
cmds, /* exported functions */
0, /* exported async functions */
params, /* exported parameters */
0, /* exported statistics */
mi_cmds, /* exported MI functions */
0, /* exported pseudo-variables */
0, /* exported transformations */
0, /* extra processes */
mod_init, /* module initialization function */
(response_function) 0, /* response handling function */
(destroy_function) mod_destroy, /* destroy function */
child_init, /* per-child init function */
0 /* reload confirm function */
};
/** Module init function */
static int mod_init(void)
{
char* p = NULL;
char* flags = NULL;
int regexp_flags = 0;
int i = 0, j;
pv_spec_t avp_spec;
LM_DBG("start\n");
/* load b2b_entities api */
if(load_b2b_api(&b2b_api)< 0)
{
LM_ERR("Failed to load b2b api\n");
return -1;
}
if(b2bl_hsize< 1 || b2bl_hsize> 20)
{
LM_ERR("Wrong hash size. Needs to be greater than 1"
" and smaller than 20. Be aware that you should set the log 2"
" value of the real size\n");
return -1;
}
b2bl_hsize = 1<<b2bl_hsize;
if(server_address.s == NULL)
{
if(extern_scenarios)
{
LM_ERR("'server_address' parameter not set. This parameter is"
" compulsory if you want to use extern scenarios. It must"
" be set to the IP address of the machine\n");
return -1;
}
}
else
server_address.len = strlen(server_address.s);
if(init_b2bl_htable() < 0)
{
LM_ERR("Failed to initialize b2b logic hash table\n");
return -1;
}
if(b2bl_db_mode && db_url.s)
{
db_url.len = strlen(db_url.s);
b2bl_dbtable.len = strlen(b2bl_dbtable.s);
/* binding to database module */
if (db_bind_mod(&db_url, &b2bl_dbf))
{
LM_ERR("Database module not found\n");
return -1;
}
if (!DB_CAPABILITY(b2bl_dbf, DB_CAP_ALL))
{
LM_ERR("Database module does not implement all functions"
" needed by b2b_entities module\n");
return -1;
}
b2bl_db = b2bl_dbf.init(&db_url);
if(!b2bl_db)
{
LM_ERR("connecting to database failed\n");
return -1;
}
/*verify table versions */
if(db_check_table_version(&b2bl_dbf, b2bl_db, &b2bl_dbtable, TABLE_VERSION) < 0)
{
LM_ERR("error during table version check\n");
return -1;
}
b2bl_db_init();
/* reload data */
if(b2b_logic_restore() < 0)
{
LM_ERR("Failed to restore data from database\n");
return -1;
}
if(b2bl_db)
b2bl_dbf.close(b2bl_db);
b2bl_db = NULL;
}
else
b2bl_db_mode = 0;
if (b2bl_key_avp_param.s)
b2bl_key_avp_param.len = strlen(b2bl_key_avp_param.s);
if (b2bl_key_avp_param.s && b2bl_key_avp_param.len > 0)
{
if (pv_parse_spec(&b2bl_key_avp_param, &avp_spec)==0 || avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s AVP definition\n",
b2bl_key_avp_param.len, b2bl_key_avp_param.s);
return -1;
}
if (pv_get_avp_name(0, &(avp_spec.pvp), &b2bl_key_avp_name, &b2bl_key_avp_type)!=0){
LM_ERR("[%.*s]- invalid AVP definition\n", b2bl_key_avp_param.len,
b2bl_key_avp_param.s);
return -1;
}
} else {
b2bl_key_avp_name = -1;
b2bl_key_avp_type = 0;
}
if(b2bl_from_spec_param.s)
{
b2bl_from_spec_param.len = strlen(b2bl_from_spec_param.s);
if(pv_parse_spec(&b2bl_from_spec_param, &b2bl_from_spec)==NULL)
{
LM_ERR("failed to parse b2bl_from spec\n");
return E_CFG;
}
switch(b2bl_from_spec.type) {
case PVT_NONE:
case PVT_EMPTY:
case PVT_NULL:
case PVT_MARKER:
case PVT_COLOR:
LM_ERR("invalid b2bl_from spec\n");
return -1;
default: ;
}
}
/* parse extra headers */
if(custom_headers.s)
custom_headers.len = strlen(custom_headers.s);
memset(custom_headers_lst, 0, HDR_LST_LEN*sizeof(str));
custom_headers_lst[i].s = custom_headers.s;
if(custom_headers.s)
{
p = strchr(custom_headers.s, ';');
while(p)
{
custom_headers_lst[i].len = p - custom_headers_lst[i].s;
/* check if this is among the default headers */
for(j = 0; j< HDR_DEFAULT_LEN; j++)
{
if(custom_headers_lst[i].len == default_headers[j].len &&
strncmp(custom_headers_lst[i].s, default_headers[j].s,
default_headers[j].len)== 0)
goto next_hdr;
}
/* check if defined twice */
for(j = 0; j< i; j++)
{
if(custom_headers_lst[i].len == custom_headers_lst[j].len &&
strncmp(custom_headers_lst[i].s, custom_headers_lst[j].s,
custom_headers_lst[j].len)== 0)
goto next_hdr;
}
i++;
if(i == HDR_LST_LEN)
{
LM_ERR("Too many extra headers defined."
" The maximum value is %d\n.", HDR_LST_LEN);
return -1;
}
next_hdr:
p++;
if(p-custom_headers.s >= custom_headers.len)
break;
custom_headers_lst[i].s = p;
p = strchr(p, ';');
}
}
if(p == NULL)
{
custom_headers_lst[i].len = custom_headers.s + custom_headers.len
- custom_headers_lst[i].s;
if(custom_headers_lst[i].len == 0)
i--;
}
custom_headers_lst_len = i +1;
if(custom_headers_regexp.s)
{
custom_headers_regexp.len = strlen(custom_headers_regexp.s);
if ((custom_headers_re=pkg_malloc(sizeof(regex_t)))==0) {
LM_ERR("no more pkg memory\n");
return -1;
}
if (*custom_headers_regexp.s == '/')
{
flags = (char *)memchr(custom_headers_regexp.s+1, '/',
custom_headers_regexp.len-1);
if (flags)
{
custom_headers_regexp.s++;
custom_headers_regexp.len = flags - custom_headers_regexp.s;
custom_headers_regexp.s[custom_headers_regexp.len] = '\0';
flags++;
while(*flags != '\0')
{
switch (*flags) {
case 'i':
regexp_flags |= REG_ICASE;
break;
case 'e':
regexp_flags |= REG_EXTENDED;
break;
default:
LM_ERR("Unknown option '%c'\n", *flags);
}
flags++;
}
} else {
LM_ERR("Second '/' missing from regexp\n");
return -1;
}
}
if (regcomp(custom_headers_re, custom_headers_regexp.s,
regexp_flags) != 0) {
pkg_free(custom_headers_re);
LM_ERR("bad regexp '%.*s'\n",
custom_headers_regexp.len, custom_headers_regexp.s);
return -1;
}
}
if(init_callid_hdr.s)
init_callid_hdr.len = strlen(init_callid_hdr.s);
register_timer("b2bl-clean", b2bl_clean, 0, b2b_clean_period,
TIMER_FLAG_DELAY_ON_DELAY);
if(b2bl_db_mode == WRITE_BACK)
register_timer("b2bl-dbupdate", b2bl_db_timer_update, 0,
b2b_update_period, TIMER_FLAG_SKIP_ON_DELAY);
return 0;
}
void b2bl_db_timer_update(unsigned int ticks, void* param)
{
b2b_logic_dump(0);
}
void b2bl_clean(unsigned int ticks, void* param)
{
int i;
b2bl_tuple_t* tuple, *tuple_next;
unsigned int now;
str bye = {BYE, BYE_LEN};
b2b_req_data_t req_data;
now = get_ticks();
for(i = 0; i< b2bl_hsize; i++)
{
lock_get(&b2bl_htable[i].lock);
tuple = b2bl_htable[i].first;
while(tuple)
{
tuple_next = tuple->next;
if(tuple->lifetime > 0 && tuple->lifetime < now)
{
LM_INFO("Found expired tuple [%.*s]: delete and send BYEs\n",
tuple->key->len, tuple->key->s);
if(tuple->bridge_entities[0] && tuple->bridge_entities[1] && !tuple->to_del)
{
if(!tuple->bridge_entities[0]->disconnected)
{
memset(&req_data, 0, sizeof(b2b_req_data_t));
PREP_REQ_DATA(tuple->bridge_entities[0]);
req_data.method =&bye;
b2b_api.send_request(&req_data);
}
if(!tuple->bridge_entities[1]->disconnected)
{
memset(&req_data, 0, sizeof(b2b_req_data_t));
PREP_REQ_DATA(tuple->bridge_entities[1]);
req_data.method =&bye;
b2b_api.send_request(&req_data);
}
}
b2bl_delete(tuple, i, 0);
}
tuple = tuple_next;
}
lock_release(&b2bl_htable[i].lock);
}
}
static int load_scenario(b2b_scenario_t** scenario_list,char* filename)
{
xmlDocPtr doc;
xmlNodePtr node;
b2b_scenario_t* scenario = NULL;
str attr;
xmlNodePtr rules_node, rule_node, request_node;
int request_id = 0;
b2b_rule_t* rule_struct = NULL;
xmlNodePtr body_node;
char* body_content= 0;
char* body_type= 0;
doc = xmlParseFile(filename);
if(doc == NULL)
{
LM_ERR("Failed to parse xml file\n");
return -1;
}
scenario = (b2b_scenario_t*)pkg_malloc(sizeof(b2b_scenario_t));
if(scenario == NULL)
{
LM_ERR("No more private memory\n");
xmlFreeDoc(doc);
return -1;
}
memset(scenario, 0, sizeof(b2b_scenario_t));
/* analyze the scenario document and descompose so that
* applying it will be more efficient */
/* extract scenario_id and param no */
scenario->id.s = (char*)xmlNodeGetAttrContentByName(doc->children, "id");
if(scenario->id.s == NULL)
{
LM_ERR("XML scenario document not well formed. No id attribute found"
" for root node\n");
pkg_free(scenario);
return -1;
}
scenario->id.len = strlen(scenario->id.s);
LM_DBG("Loaded scenario with id = [%.*s]\n", scenario->id.len, scenario->id.s);
attr.s = (char*)xmlNodeGetAttrContentByName(doc->children, "param");
if(attr.s == NULL)
{
LM_ERR("XML scenario document not well formed. No id attribute found"
" for root node\n");
return -1;
}
attr.len = strlen(attr.s);
if( str2int(&attr, &scenario->param_no) < 0)
{
LM_ERR("Failed to parse id attribute for scenario node. It must be an integer.\n");
xmlFree(attr.s);
pkg_free(scenario);
return -1;
}
xmlFree(attr.s);
/* extract init node */
scenario->init_node = xmlDocGetNodeByName(doc, "init", NULL);
if(scenario->init_node == NULL)
{
LM_ERR("Wrong formatted xml doc. Didn't find an init node\n");
goto error;
}
node = xmlNodeGetChildByName(scenario->init_node, "use_init_sdp");
if(node)
{
scenario->use_init_sdp = 1;
body_node = xmlNodeGetChildByName(node, "body");
if(body_node)
{
body_type = (char *)xmlNodeGetAttrContentByName(body_node, "type");
if (body_type == NULL)
{
LM_ERR("Bad formatted scenario document. Empty body content type\n");
goto error;
}
body_content = (char*)xmlNodeGetContent(body_node);
if(body_content == NULL)
{
LM_ERR("Bad formatted scenario document. Empty body\n");
xmlFree(body_type);
goto error;
}
/* we move everything in pkg to be able to strip them */
scenario->body_type.len = strlen(body_type);
scenario->body_type.s = body_type;
scenario->body.len = strlen(body_content);
scenario->body.s = body_content;
}
}
/* go through the rules */
node = xmlDocGetNodeByName(doc, "rules", NULL);
if(node == NULL)
{
LM_DBG("No rules defined\n");
goto done;
}
rules_node = xmlNodeGetChildByName(node, "request");
if(rules_node == NULL)
{
LM_DBG("No request rules defined\n");
goto after_req_rules;
}
for(request_node= rules_node->children; request_node; request_node = request_node->next)
{
if(xmlStrcasecmp(request_node->name, (unsigned char*)"text") == 0)
continue;
attr.s = (char*)request_node->name;
attr.len = strlen(attr.s);
request_id = b2b_get_request_id(&attr);
if(request_id < 0)
{
LM_ERR("Bad scenario document. A rule defined for a not supported"
" request type [%s]\n", request_node->name);
goto error;
}
for(rule_node= request_node->children; rule_node; rule_node = rule_node->next)
{
if(xmlStrcasecmp(rule_node->name, (unsigned char*)"rule")!= 0)
continue;
rule_struct = (b2b_rule_t*)pkg_malloc(sizeof(b2b_rule_t));
if(rule_struct == NULL)
{
LM_ERR("No more memory\n");
goto error;
}
memset(rule_struct, 0, sizeof(b2b_rule_t));
rule_struct->next = scenario->request_rules[request_id];
scenario->request_rules[request_id] = rule_struct;
attr.s = (char*)xmlNodeGetAttrContentByName(rule_node, "id");
if(attr.s == NULL)
{
LM_ERR("Bad scenario document. No id attribute for 'rule' node\n");
goto error;
}
attr.len = strlen(attr.s);
if(str2int(&attr, &rule_struct->id)< 0)
{
LM_ERR("Bad scenario document. rules_no subschild for request rule not an integer\n");
xmlFree(attr.s);
goto error;
}
xmlFree(attr.s);
rule_struct->cond_state = -1;
/* extract conditional state if present */
rule_struct->cond_node = xmlNodeGetChildByName(rule_node, "condition");
if(rule_struct->cond_node)
{
/* extract the condition state if any */
attr.s = (char*)xmlNodeGetNodeContentByName(rule_struct->cond_node, "state", NULL);
if(attr.s)
{
attr.len = strlen(attr.s);
if(str2int(&attr, (unsigned int*)&rule_struct->cond_state)< 0)
{
LM_ERR("Bad scenario. Cond state must be an integer [%s]\n",attr.s);
xmlFree(attr.s);
goto error;
}
xmlFree(attr.s);
}
}
node = xmlNodeGetChildByName(rule_node, "action");
if(node == NULL)
{
LM_ERR("Bad scenario document. A rule needs an action node\n");
goto error;
}
rule_struct->action_node = node;
}
}
after_req_rules:
/* TODO - Analyze if there are actions for replies */
LM_DBG("scenario_id = %.*s\n", scenario->id.len, scenario->id.s);
done:
scenario->doc = doc;
scenario->next = *scenario_list;
*scenario_list = scenario;
return 0;
error:
if(doc)
xmlFree(doc);
if(scenario)
{
int i;
b2b_rule_t* prev;
for(i = 0; i< B2B_METHODS_NO; i++)
{
rule_struct = scenario->request_rules[i];
while(rule_struct)
{
prev = rule_struct;
rule_struct = rule_struct->next;
pkg_free(prev);
}
}
rule_struct = scenario->reply_rules;
while(rule_struct)
{
prev = rule_struct;
rule_struct = rule_struct->next;
pkg_free(prev);
}
if(scenario->id.s)
xmlFree(scenario->id.s);
if(scenario->body.s)
xmlFree(scenario->body.s);
if(scenario->body_type.s)
xmlFree(scenario->body_type.s);
pkg_free(scenario);
}
return -1;
}
static int load_script_scenario(modparam_t type, void* val)
{
return load_scenario(&script_scenarios, (char*)val);
}
static int load_extern_scenario(modparam_t type, void* val)
{
return load_scenario(&extern_scenarios, (char*)val);
}
static void mod_destroy(void)
{
int i;
b2b_rule_t* rule_struct = NULL;
b2b_scenario_t* scenario, *next;
if(b2bl_db)
{
if(b2bl_db_mode==WRITE_BACK)
b2b_logic_dump(1);
b2bl_dbf.close(b2bl_db);
}
scenario = extern_scenarios;
while(scenario)
{
next = scenario->next;
xmlFree(scenario->id.s);
xmlFreeDoc(scenario->doc);
pkg_free(scenario);
scenario = next;
}
scenario = script_scenarios;
while(scenario)
{
next = scenario->next;
xmlFreeDoc(scenario->doc);
b2b_rule_t* prev;
for(i = 0; i< B2B_METHODS_NO; i++)
{
rule_struct = scenario->request_rules[i];
while(rule_struct)
{
prev = rule_struct;
rule_struct = rule_struct->next;
pkg_free(prev);
}
}
rule_struct = scenario->reply_rules;
while(rule_struct)
{
prev = rule_struct;
rule_struct = rule_struct->next;
pkg_free(prev);
}
if(scenario->id.s)
xmlFree(scenario->id.s);
if (scenario->body.s)
xmlFree(scenario->body.s);
if (scenario->body_type.s)
xmlFree(scenario->body_type.s);
pkg_free(scenario);
scenario = next;
}
destroy_b2bl_htable();
}
static int child_init(int rank)
{
if (b2bl_db_mode==0)
return 0;
if (b2bl_dbf.init==0)
{
LM_CRIT("child_init: database not bound\n");
return -1;
}
b2bl_db = b2bl_dbf.init(&db_url);
if(!b2bl_db)
{
LM_ERR("connecting to database failed\n");
return -1;
}
LM_DBG("child %d: Database connection opened successfully\n", rank);
return 0;
}
b2b_scenario_t* get_scenario_id_list(str* sid, b2b_scenario_t* list)
{
b2b_scenario_t* scenario;
/*search first in script_scenarios */
scenario = list;
while(scenario)
{
LM_DBG("scenario id = %.*s\n", scenario->id.len, scenario->id.s);
if(scenario->id.len == sid->len &&
strncmp(scenario->id.s, sid->s, sid->len) == 0)
{
return scenario;
}
scenario = scenario->next;
}
return 0;
}
b2b_scenario_t* get_scenario_id(str* sid)
{
b2b_scenario_t* scenario;
if(sid->s== 0 || sid->len== 0)
return 0;
if(sid->len == B2B_TOP_HIDING_SCENARY_LEN &&
strncmp(sid->s,B2B_TOP_HIDING_SCENARY,B2B_TOP_HIDING_SCENARY_LEN)==0)
{
return 0;
}
scenario = get_scenario_id_list(sid, script_scenarios);
if(scenario)
return scenario;
return get_scenario_id_list(sid, extern_scenarios);
}
static int fixup_b2b_logic(void** param)
{
str s;
str flags_s;
int st;
struct b2b_scen_fl *scf;
s = *(str*)*param;
scf = prepare_b2b_scen_fl_struct();
if (scf == NULL)
{
LM_ERR("no more pkg memory\n");
return -1;
}
scf->params.init_timeout = b2bl_th_init_timeout;
if ( (flags_s.s = q_memchr(s.s,'/',s.len)) != NULL)
{
flags_s.s++;
flags_s.len = s.len - (flags_s.s - s.s);
s.len = s.len - flags_s.len - 1;
/* parse flags */
for( st=0 ; st< flags_s.len ; st++ ) {
switch (flags_s.s[st])
{
case 't':
scf->params.init_timeout = 0;
while (st<flags_s.len-1 && isdigit(flags_s.s[st+1])) {
scf->params.init_timeout =
scf->params.init_timeout*10 + flags_s.s[st+1] - '0';
st++;
}
break;
case 'a':
scf->params.flags |= B2BL_FLAG_TRANSPARENT_AUTH;
break;
case 'p':
scf->params.flags |= B2BL_FLAG_TRANSPARENT_TO;
break;
default:
LM_WARN("unknown option `%c'\n", *flags_s.s);
}
}
}
if(s.len == B2B_TOP_HIDING_SCENARY_LEN &&
strncmp(s.s,B2B_TOP_HIDING_SCENARY,B2B_TOP_HIDING_SCENARY_LEN)==0)
{
scf->scenario = NULL;
}
else
{
scf->scenario = get_scenario_id_list(&s, script_scenarios);
if (!scf->scenario)
{
LM_ERR("Wrong Scenary ID. No scenario with this ID [%.*s]\n", s.len, s.s);
return E_UNSPEC;
}
}
*param=(void*)scf;
return 0;
}
static int fixup_free_b2b_logic(void** param)
{
if (*param)
pkg_free(*param);
return 0;
}
struct to_body* get_b2bl_from(struct sip_msg* msg)
{
int len = 0;
if(b2bl_from_spec_param.s)
{
memset(&b2bl_from_tok, 0, sizeof(pv_value_t));
if(pv_get_spec_value(msg, &b2bl_from_spec, &b2bl_from_tok) < 0)
{
LM_ERR("Failed to get b2bl_from value\n");
return NULL;
}
//LM_DBG("got b2bl_from_spec_param flags [%d]\n", b2bl_from_tok.flags);
if(b2bl_from_tok.flags&PV_VAL_INT)
{
/* the PV might be empty */
return NULL;
}
if(b2bl_from_tok.flags&PV_VAL_STR)
{
//LM_DBG("got PV_SPEC b2bl_from [%.*s]\n",
// b2bl_from_tok.rs.len, b2bl_from_tok.rs.s);
if(b2bl_from_tok.rs.len+CRLF_LEN > B2BL_FROM_BUF_LEN) {
LM_ERR("Buffer overflow\n");
return NULL;
}
trim(&b2bl_from_tok.rs);
memcpy(b2bl_from_buf, b2bl_from_tok.rs.s,
b2bl_from_tok.rs.len);
len = b2bl_from_tok.rs.len;