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drouting.c
5041 lines (4307 loc) · 135 KB
/
drouting.c
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/*
* Copyright (C) 2005-2009 Voice Sistem SRL
*
* This file is part of Open SIP Server (OpenSIPS).
*
* DROUTING OpenSIPS-module 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.
*
* DROUTING OpenSIPS-module 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.
*
* For any questions about this software and its license, please contact
* Voice Sistem at following e-mail address:
* office@voice-system.ro
*
* History:
* ---------
* 2005-02-20 first version (cristian)
* 2005-02-27 ported to 0.9.0 (bogdan)
*/
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <unistd.h>
#include "../../evi/evi.h"
#include "../../map.h"
#include "dr_load.h"
#include "prefix_tree.h"
#include "dr_bl.h"
#include "dr_db_def.h"
#include "dr_partitions.h"
#include "dr_api.h"
#include "dr_api_internal.h"
#define DR_PARAM_USE_WEIGTH (1<<0)
#define DR_PARAM_RULE_FALLBACK (1<<1)
#define DR_PARAM_STRICT_LEN (1<<2)
#define DR_PARAM_ONLY_CHECK (1<<3)
#define DR_PARAM_INTERNAL_TRIGGERED (1<<30)
#define DRD_TABLE_VER 6
#define DRR_TABLE_VER 3
#define DRG_TABLE_VER 2
#define DRC_TABLE_VER 2
#define PART_TABLE_VER 1
#define MAX_LEN_NAME_W_PART 510 /* max len of variable containing
avp_spec and partition name */
#define MI_NO_PART_S "Too many arguments (use_partitions is 0 so no parameter"\
" should be supplied to the MI function)"
#define MI_NO_PART_LEN (strlen(MI_NO_PART_S))
#define MI_PART_NAME_S "Partition"
#define MI_PART_NAME_LEN (strlen(MI_PART_NAME_S))
#define MI_LAST_UPDATE_S "Date"
#define MI_LAST_UPDATE_LEN (strlen(MI_LAST_UPDATE_S))
/* probing related stuff */
static unsigned int dr_prob_interval = 30;
static str dr_probe_replies = {NULL,0};
struct tm_binds dr_tmb;
str dr_probe_method = str_init("OPTIONS");
str dr_probe_from = str_init("sip:prober@localhost");
static int* probing_reply_codes = NULL;
static int probing_codes_no = 0;
/* reload controll parametere */
static int no_concurrent_reload = 0;
/*** DB relatede stuff ***/
/* parameters */
static str db_url = {NULL,0};
static int dr_persistent_state = 1;
/* DRG use domain */
static int use_domain = 1;
int dr_default_grp = -1;
int dr_force_dns = 1;
/* internal AVP used to store serial RURIs */
static str ruri_avp_spec = str_init("$avp(___dr_ruri__)");
/* internal AVP used to store GW IDs */
static str gw_id_avp_spec = str_init("$avp(___dr_gw_id__)");
/* internal AVP used to store GW socket */
static str gw_sock_avp_spec = str_init("$avp(___dr_sock__)");
/* internal AVP used to store GW ATTRs */
static str gw_attrs_avp_spec = str_init("$avp(___dr_gw_att__)");
/* AVP used to store GW Pri Prefix */
static str gw_priprefix_avp_spec = { NULL, 0};
/* AVP used to store RULE IDs */
static str rule_id_avp_spec = {NULL, 0};
/* internal AVP used to store RULE ATTRs */
static str rule_attrs_avp_spec = str_init("$avp(___dr_ru_att__)");
/* AVP used to store RULE prefix */
static str rule_prefix_avp_spec = {NULL, 0};
/* AVP used to store CARRIER ID */
static str carrier_id_avp_spec = {NULL, 0};
/* internal AVP used to store CARRIER ATTRs */
static str carrier_attrs_avp_spec = str_init("$avp(___dr_cr_att__)");
/* AVP used to store PARTITION ID when using wildcard operator instead of
* partition name */
static str partition_pvar = {NULL, 0};
pv_spec_t partition_spec;
/*
* global pointers for faster parameter passing between functions
* meaning: current script pvar to dump attrs in (NULL to ignore)
*/
static pv_spec_p rule_attrs_spec;
static pv_spec_p gw_attrs_spec;
static pv_spec_p carrier_attrs_spec;
/*
* if the attributes are not used at all in the script,
* do not store them in their internal AVPs at all --liviu
*/
static int populate_rule_attrs;
static int populate_gw_attrs;
static int populate_carrier_attrs;
/* statistic data */
int tree_size = 0;
int inode = 0;
int unode = 0;
static str attrs_empty = str_init("");
/* configuration loader from db specific stuff */
static str db_partitions_table = str_init("dr_partitions"); /* default url */
static str db_partitions_url;
//static int use_partitions = 0;
// int use_partitions = 0; /* by default don't use db for config */
static struct head_config {
str partition; /* partition name extracted from database */
str db_url;
str drd_table; /* drd_table name extracted from database */
str drr_table; /* drr_table name extracted from database */
str drc_table; /* drc_table name extracted from database */
str drg_table; /* drg_table name extracted from database */
str gw_priprefix_avp_spec; /* extracted from database - it can be NULL */
str rule_id_avp_spec; /* extracted from database - it can be NULL */
str rule_prefix_avp_spec; /* extracted from database - it can be NULL */
str carrier_id_avp_spec; /* extracted from database - it can be NULL */
str ruri_avp_spec; /* extracted from database - has default value */
str gw_id_avp_spec; /* extracted from database - has default value */
str gw_sock_avp_spec; /* extracted from database - has default value */
str gw_attrs_avp_spec; /* extracted from database - has default value */
str rule_attrs_avp_spec; /* extracted from database - has default value */
str carrier_attrs_avp_spec; /* extracted from database - has default value */
struct head_config *next;
}* head_start = NULL,* head_end = NULL;
struct head_db * head_db_start = NULL,* head_db_end = NULL;
typedef struct param_prob_callback {
struct head_db * current_partition;
unsigned int _id;
}param_prob_callback_t;
typedef struct dr_partition {
union {
struct head_db * part;
gparam_p part_name;
} v;
enum dr_partition_type { DR_PTR_PART, DR_GPARAM_PART, DR_WILDCARD_PART, DR_NO_PART } type;
} dr_partition_t;
typedef struct dr_part_group {
dr_partition_t * dr_part;
dr_group_t * group;
} dr_part_group_t;
static dr_part_group_t * default_part; /* for do_routing, used when
use_partitions = 0 */
typedef struct dr_part_old {
dr_partition_t *dr_part;
gparam_p gw_or_cr; /* gateway or carrier */
} dr_part_old_t;
typedef struct dr_part_cr {
gparam_p part;
gparam_p cr;
} dr_part_cr_t;
typedef struct dr_part_gw {
gparam_p part;
gparam_p gw;
} dr_part_gw_t;
static int get_config_from_db();
static int add_head_config();
static int add_head_db();
static int db_load_head(struct head_db*); /* used for populating head_db with
db connections and db funcs */
static void trim_char(char**);
static int fixup_dr_disable(void **,int);
//static struct head_db * get_partition(const str *);
static int _is_dr_gw_w_part(struct sip_msg* , char * , char* ,
int , struct ip_addr* , unsigned int);
static int use_next_gw_w_part( struct sip_msg*, struct head_db *, char *, char *, char *);
static int dr_disable(struct sip_msg *req, char * current_partition);
static int dr_disable_w_part(struct sip_msg *req, struct head_db *current_partition);
static int to_partition(struct sip_msg*, dr_partition_t *,
struct head_db **);
static inline int init_part_grp(dr_part_group_t **, struct head_db *,
dr_group_t*);
/* reader-writers lock for reloading the data */
static rw_lock_t *ref_lock = NULL;
static int dr_init(void);
static int dr_child_init(int rank);
static int dr_exit(void);
static int fixup_do_routing(void** param, int param_no);
static int fixup_next_gw(void** param, int param_no);
static int fixup_from_gw(void** param, int param_no);
static int fixup_is_gw(void** param, int param_no);
static int fixup_route2_carrier( void** param, int param_no);
static int fixup_route2_gw( void** param, int param_no);
static int do_routing(struct sip_msg* msg,dr_part_group_t*, int sort, gparam_t* wl);
static int do_routing_0(struct sip_msg* msg);
static int do_routing_1(struct sip_msg* msg, char * , char* id, char* fl, char* wl,
char* rule_att, char* gw_att, char* carr_att);
static int use_next_gw(struct sip_msg* msg,
char* rule_or_part, char* rule_or_gw, char* gw_or_carr, char * carr);
static int is_from_gw_0(struct sip_msg* msg);
static int is_from_gw_1(struct sip_msg* msg, char * part);
static int is_from_gw_2(struct sip_msg* msg, char * part, char* str1);
static int is_from_gw_3(struct sip_msg* msg, char *, char*, char* );
static int is_from_gw_4(struct sip_msg*, char*, char*, char*, char*);
static int goes_to_gw_0(struct sip_msg* msg);
static int goes_to_gw_1(struct sip_msg* msg, char * part, char* f1, char* f2, char* f3);
static int dr_is_gw(struct sip_msg* msg, char * part, char* str1, char* str2, char* str3,
char* str4);
static int route2_carrier(struct sip_msg* msg, char* cr_str,
char* gw_att_pv, char* carr_att_pv);
static int route2_gw(struct sip_msg* msg, char* gw, char* gw_att_pv);
static struct mi_root* dr_reload_cmd(struct mi_root *cmd_tree, void *param);
static struct mi_root* mi_dr_gw_status(struct mi_root *cmd, void *param);
static struct mi_root* mi_dr_cr_status(struct mi_root *cmd, void *param);
static struct mi_root* mi_dr_number_routing(struct mi_root *cmd_tree, void *param);
static struct mi_root* mi_dr_reload_status(struct mi_root *cmd_tree, void *param);
/* event */
static str dr_event = str_init("E_DROUTING_STATUS");
static event_id_t dr_evi_id;
/*
* Exported functions
*/
static cmd_export_t cmds[] = {
{"do_routing", (cmd_function)do_routing_0, 0, 0, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"do_routing", (cmd_function)do_routing_1, 1, fixup_do_routing, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"do_routing", (cmd_function)do_routing_1, 2, fixup_do_routing, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"do_routing", (cmd_function)do_routing_1, 3, fixup_do_routing, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"do_routing", (cmd_function)do_routing_1, 4, fixup_do_routing, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"do_routing", (cmd_function)do_routing_1, 5, fixup_do_routing, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"do_routing", (cmd_function)do_routing_1, 6, fixup_do_routing, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"do_routing", (cmd_function)do_routing_1, 7, fixup_do_routing, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"use_next_gw", (cmd_function)use_next_gw, 0, 0, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"use_next_gw", (cmd_function)use_next_gw, 1, fixup_next_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"use_next_gw", (cmd_function)use_next_gw, 2, fixup_next_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"use_next_gw", (cmd_function)use_next_gw, 3, fixup_next_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"use_next_gw", (cmd_function)use_next_gw, 4, fixup_next_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"next_routing", (cmd_function)use_next_gw, 0, 0, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"next_routing", (cmd_function)use_next_gw, 1, fixup_next_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"next_routing", (cmd_function)use_next_gw, 2, fixup_next_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"next_routing", (cmd_function)use_next_gw, 3, fixup_next_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"is_from_gw", (cmd_function)is_from_gw_0, 0, 0, 0,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE},
{"is_from_gw", (cmd_function)is_from_gw_1, 1, fixup_from_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE},
{"is_from_gw", (cmd_function)is_from_gw_2, 2, fixup_from_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE},
{"is_from_gw", (cmd_function)is_from_gw_3, 3, fixup_from_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE},
{"is_from_gw", (cmd_function)is_from_gw_4, 4, fixup_from_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE},
{"goes_to_gw", (cmd_function)goes_to_gw_0, 0, 0, 0,
REQUEST_ROUTE|FAILURE_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE},
{"goes_to_gw", (cmd_function)goes_to_gw_1, 1, fixup_from_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE},
{"goes_to_gw", (cmd_function)goes_to_gw_1, 2, fixup_from_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE},
{"goes_to_gw", (cmd_function)goes_to_gw_1, 3, fixup_from_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE},
{"goes_to_gw", (cmd_function)goes_to_gw_1, 4, fixup_from_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE},
{"dr_is_gw", (cmd_function)dr_is_gw, 1, fixup_is_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE|
STARTUP_ROUTE|TIMER_ROUTE|EVENT_ROUTE},
{"dr_is_gw", (cmd_function)dr_is_gw, 2, fixup_is_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE|
STARTUP_ROUTE|TIMER_ROUTE|EVENT_ROUTE},
{"dr_is_gw", (cmd_function)dr_is_gw, 3, fixup_is_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE|
STARTUP_ROUTE|TIMER_ROUTE|EVENT_ROUTE},
{"dr_is_gw", (cmd_function)dr_is_gw, 4, fixup_is_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE|
STARTUP_ROUTE|TIMER_ROUTE|EVENT_ROUTE},
{"dr_is_gw", (cmd_function)dr_is_gw, 5, fixup_is_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE|
STARTUP_ROUTE|TIMER_ROUTE|EVENT_ROUTE},
{"dr_disable", (cmd_function)dr_disable, 0, 0, 0,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE},
{"dr_disable", (cmd_function)dr_disable, 1, fixup_dr_disable, 0,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE},
{"route_to_carrier",(cmd_function)route2_carrier,1,fixup_route2_carrier, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"route_to_carrier",(cmd_function)route2_carrier,2,fixup_route2_carrier, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"route_to_carrier",(cmd_function)route2_carrier,3,fixup_route2_carrier, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"route_to_gw", (cmd_function)route2_gw, 1,fixup_route2_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"route_to_gw", (cmd_function)route2_gw, 2,fixup_route2_gw, 0,
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE},
{"load_dr", (cmd_function)load_dr, 0, 0, 0, 0},
{0, 0, 0, 0, 0, 0}
};
/*
* Exported parameters
*/
static param_export_t params[] = {
{"use_partitions", INT_PARAM, &use_partitions },
{"db_partitions_url", STR_PARAM, &db_partitions_url.s },
{"db_partitions_table", STR_PARAM, &db_partitions_table.s },
{"db_url", STR_PARAM, &db_url.s },
{"drd_table", STR_PARAM, &drd_table.s },
{"drr_table", STR_PARAM, &drr_table.s },
{"drg_table", STR_PARAM, &drg_table.s },
{"drc_table", STR_PARAM, &drc_table.s },
{"use_domain", INT_PARAM, &use_domain },
{"drg_user_col", STR_PARAM, &drg_user_col.s },
{"drg_domain_col", STR_PARAM, &drg_domain_col.s },
{"drg_grpid_col", STR_PARAM, &drg_grpid_col.s },
{"ruri_avp", STR_PARAM, &ruri_avp_spec.s },
{"gw_id_avp", STR_PARAM, &gw_id_avp_spec.s },
{"gw_priprefix_avp", STR_PARAM, &gw_priprefix_avp_spec.s },
{"gw_sock_avp", STR_PARAM, &gw_sock_avp_spec.s },
{"rule_id_avp", STR_PARAM, &rule_id_avp_spec.s },
{"rule_prefix_avp", STR_PARAM, &rule_prefix_avp_spec.s },
{"carrier_id_avp", STR_PARAM, &carrier_id_avp_spec.s },
{"force_dns", INT_PARAM, &dr_force_dns },
{"default_group", INT_PARAM, &dr_default_grp },
{"define_blacklist", STR_PARAM|USE_FUNC_PARAM, (void*)set_dr_bl },
{"probing_interval", INT_PARAM, &dr_prob_interval },
{"probing_method", STR_PARAM, &dr_probe_method.s },
{"probing_from", STR_PARAM, &dr_probe_from.s },
{"probing_reply_codes",STR_PARAM, &dr_probe_replies.s },
{"persistent_state", INT_PARAM, &dr_persistent_state },
{"no_concurrent_reload",INT_PARAM, &no_concurrent_reload },
{"partition_id_pvar", STR_PARAM, &partition_pvar.s},
{0, 0, 0}
};
/*
* Exported MI functions
*/
#define HLP1 "Params: none ; Forces drouting module to reload data from DB "\
"into memory; A return string is returned only in case of error."
#define HLP2 "Params: [ gw_id [ status ]] ; Sets/gets the status of a GW; "\
"If no gw_id is given, all gws will be listed; if a new status is give, "\
"it will be pushed to the given GW."
#define HLP3 "Params: [ carrier_id [ status ]] ; Sets/gets the status of a " \
"carrier; If no carrier_id is given, all carrier will be listed; if a " \
"new status is give, it will be pushed to the given carrier."
#define HLP4 "Params: [partition] [group_id] number ; List the gateways a "\
"number will match when searching through the rules from a specific group. "\
"The partition parameter must be defined only if use_partitions = 1."
#define HLP5 "Params: [partition]; List the time of the last dr_reload"\
" (load from database) for all partitions if no parameter is supplied, or"\
" for a partition given as parameter. If use_partitions is 0, you should"\
" not specify a partition."
static mi_export_t mi_cmds[] = {
{ "dr_reload", HLP1, dr_reload_cmd, 0, 0, 0},
{ "dr_gw_status", HLP2, mi_dr_gw_status, 0, 0, 0},
{ "dr_carrier_status", HLP3, mi_dr_cr_status, 0, 0, 0},
{ "dr_number_routing", HLP4, mi_dr_number_routing, 0, 0, 0},
{ "dr_reload_status", HLP5, mi_dr_reload_status, 0, 0, 0},
{ 0, 0, 0, 0, 0, 0}
};
static module_dependency_t *get_deps_probing_interval(param_export_t *param)
{
if (*(int *)param->param_pointer <= 0)
return NULL;
return alloc_module_dep(MOD_TYPE_DEFAULT, "tm", DEP_ABORT);
}
static dep_export_t deps = {
{ /* OpenSIPS module dependencies */
{ MOD_TYPE_SQLDB, NULL, DEP_ABORT },
{ MOD_TYPE_NULL, NULL, 0 },
},
{ /* modparam dependencies */
{ "probing_interval", get_deps_probing_interval },
{ NULL, NULL },
},
};
struct module_exports exports = {
"drouting",
MOD_TYPE_DEFAULT,/* class of this module */
MODULE_VERSION,
DEFAULT_DLFLAGS, /* dlopen flags */
&deps, /* OpenSIPS module dependencies */
cmds, /* Exported functions */
0, /* Exported async functions */
params, /* Exported parameters */
0, /* exported statistics */
mi_cmds, /* exported MI functions */
0, /* exported pseudo-variables */
0, /* additional processes */
dr_init, /* Module initialization function */
(response_function) 0,
(destroy_function) dr_exit,
(child_init_function) dr_child_init /* per-child init function */
};
/** Probing Section **/
static int check_options_rplcode(int code)
{
int i;
for (i =0; i< probing_codes_no; i++) {
if(probing_reply_codes[i] == code)
return 1;
}
return 0;
}
static int dr_disable(struct sip_msg *req, char * param_part_name) {
str part_name;
struct head_db * current_partition = 0;
if( param_part_name!=NULL && fixup_get_svalue(req,
(gparam_p)param_part_name,
&part_name)==0 ) {
if( (current_partition = get_partition(&part_name))!= NULL) {
return dr_disable_w_part(req, current_partition);
} else {
LM_ERR("Given partition name <%.*s> was not found\n", part_name.len, part_name.s);
return -1;
}
} else {
if( use_partitions ) {
LM_ERR("Partition name is mandatory <%.*s>\n", part_name.len
,part_name.s);
return -1;
} else {
if( head_db_start==NULL ) {
LM_ERR(" Error while loading default converation from .cfg"
" file\n");
return -1;
}
return dr_disable_w_part(req, head_db_start);
}
}
return -1;/* unexpected ending */
}
static str dr_gwid_str = str_init("gwid");
static str dr_address_str = str_init("address");
static str dr_status_str = str_init("status");
static str dr_inactive_str = str_init("inactive");
static str dr_active_str = str_init("active");
static str dr_disabled_str = str_init("disabled MI");
static str dr_probing_str = str_init("probing");
static void dr_raise_event(pgw_t *gw)
{
evi_params_p list = NULL;
str *txt;
if (dr_evi_id == EVI_ERROR || !evi_probe_event(dr_evi_id))
return;
list = evi_get_params();
if (!list) {
LM_ERR("cannot create event params\n");
return;
}
if (evi_param_add_str(list, &dr_gwid_str, &gw->id) < 0) {
LM_ERR("cannot add gwid\n");
goto error;
}
if (evi_param_add_str(list, &dr_address_str, &gw->ip_str) < 0) {
LM_ERR("cannot add address\n");
goto error;
}
if (gw->flags&DR_DST_STAT_DSBL_FLAG) {
if (gw->flags&DR_DST_STAT_NOEN_FLAG)
txt = &dr_disabled_str;
else if (gw->flags&DR_DST_PING_DSBL_FLAG)
txt = &dr_probing_str;
else
txt = &dr_inactive_str;
} else {
txt = &dr_active_str;
}
if (evi_param_add_str(list, &dr_status_str, txt) < 0) {
LM_ERR("cannot add state\n");
goto error;
}
if (evi_raise_event(dr_evi_id, list)) {
LM_ERR("unable to send dr event\n");
}
return;
error:
evi_free_params(list);
}
static int dr_disable_w_part(struct sip_msg *req, struct head_db *current_partition)
{
struct usr_avp *avp;
int_str id_val;
pgw_t *gw;
lock_start_read( current_partition->ref_lock );
avp = search_first_avp( AVP_VAL_STR, current_partition->gw_id_avp, &id_val,0);
if (avp==NULL) {
LM_DBG(" no AVP ID ->nothing to disable\n");
lock_stop_read( current_partition->ref_lock );
return -1;
}
gw = get_gw_by_id( (*current_partition->rdata)->pgw_tree, &id_val.s );
if (gw!=NULL && (gw->flags&DR_DST_STAT_DSBL_FLAG)==0) {
LM_INFO(" partition : %.*s\n", current_partition->partition.len,
current_partition->partition.s);
gw->flags |= DR_DST_STAT_DSBL_FLAG|DR_DST_STAT_DIRT_FLAG;
dr_raise_event(gw);
}
lock_stop_read( current_partition->ref_lock );
return 1;
}
static void dr_probing_callback( struct cell *t, int type,
struct tmcb_params *ps )
{
int code = ps->code;
pgw_t *gw;
int _id ;
struct head_db * current_partition;
if (!ps->param || !*ps->param) {
LM_CRIT("BUG - reply to a DR probe with no ID (code=%d)\n", ps->code);
return;
}
if( !((param_prob_callback_t*)*ps->param)->current_partition ) {
LM_CRIT("BUG - no partition supplied to callback function\n");
return ;
}
current_partition = ( (param_prob_callback_t*) *ps->param)->current_partition;
lock_start_read( current_partition->ref_lock );
_id = ((param_prob_callback_t*)*ps->param)->_id;
gw = get_gw_by_internal_id( (*(current_partition->rdata))->pgw_tree, _id);
if (gw==NULL)
goto end;
if ((code == 200) || check_options_rplcode(code)) {
/* re-enable to DST (if allowed) */
if ( (gw->flags&DR_DST_STAT_NOEN_FLAG)!=0 || /* permanently disabled */
(gw->flags&DR_DST_STAT_DSBL_FLAG)==0) /* not disabled at all */
goto end;
gw->flags &= ~DR_DST_STAT_DSBL_FLAG;
gw->flags |= DR_DST_STAT_DIRT_FLAG;
dr_raise_event(gw);
goto end;
}
if (code>=400 && (gw->flags&DR_DST_STAT_DSBL_FLAG)==0) {
gw->flags |= DR_DST_STAT_DSBL_FLAG|DR_DST_STAT_DIRT_FLAG;
dr_raise_event(gw);
goto end;
}
end:
lock_stop_read( current_partition->ref_lock );
return;
}
static void param_prob_callback_free(void *param) {
shm_free(param);
}
static void dr_prob_handler(unsigned int ticks, void* param)
{
static char buff[1000] = {"sip:"};
/* do probing */
pgw_t *dst;
param_prob_callback_t *params;
dlg_t *dlg;
str uri;
void** dest;
map_iterator_t map_it;
struct head_db *it = head_db_start;
while( it!=NULL ) {
if (it->rdata==NULL || *(it->rdata)==NULL)
return;
lock_start_read( it->ref_lock );
/* go through all destinations */
for (map_first( (*(it->rdata))->pgw_tree, &map_it);
iterator_is_valid(&map_it); iterator_next(&map_it)) {
dest = iterator_val(&map_it);
if (dest==NULL)
break;
dst = (pgw_t*)*dest;
/* dst requires probing ? */
if ( dst->flags&DR_DST_STAT_NOEN_FLAG
|| !( (dst->flags&DR_DST_PING_PERM_FLAG) || /*permanent probing*/
( dst->flags&DR_DST_PING_DSBL_FLAG
&& dst->flags&DR_DST_STAT_DSBL_FLAG /*probing on disable*/
)
)
) {
continue;
}
memcpy(buff + 4, dst->ip_str.s, dst->ip_str.len);
uri.s = buff;
uri.len = dst->ip_str.len + 4;
/* Execute the Dialog using the "request"-Method of the
* TM-Module.*/
if (dr_tmb.new_auto_dlg_uac(&dr_probe_from, &uri, dst->sock, &dlg)!=0) {
LM_ERR("failed to create new TM dlg\n");
continue;
}
dlg->state = DLG_CONFIRMED;
params = shm_malloc(sizeof(param_prob_callback_t));
if( params==0 ) {
LM_ERR("no more shm memory!\n");
return;
}
params->_id = dst->_id;
params->current_partition = it;
if (dr_tmb.t_request_within(&dr_probe_method, NULL, NULL, dlg,
dr_probing_callback, (void*)params, param_prob_callback_free) < 0) {
LM_ERR("unable to execute dialog\n");
}
dr_tmb.free_dlg(dlg);
}
lock_stop_read( it->ref_lock );
it = it->next;
}
}
static void dr_state_flusher(struct head_db* hd)
{
static db_ps_t cr_ps=NULL, gw_ps=NULL;
pgw_t *gw;
pcr_t *cr;
db_key_t key_cmp;
db_val_t val_cmp;
db_key_t key_set;
db_val_t val_set;
void** dest;
map_iterator_t it;
if(!hd) {
LM_ERR(" Bug - no head supplied to dr_state_flusher\n");
}
/* is data avaialable? */
if (!hd || !(hd->rdata) || !(*hd->rdata))
return;
val_cmp.type = DB_STR;
val_cmp.nul = 0;
val_set.type = DB_INT;
val_set.nul = 0;
/* update the gateways */
if ((hd->db_funcs).use_table( (*hd->db_con), &(hd->drd_table)) < 0) {
LM_ERR("cannot select table \"%.*s\"\n", hd->drd_table.len, hd->drd_table.s);
return;
}
key_cmp = &gwid_drd_col;
key_set = &state_drd_col;
/* iterate the gateways */
for (map_first((*hd->rdata)->pgw_tree , &it);
iterator_is_valid(&it); iterator_next(&it)) {
dest = iterator_val(&it);
if (dest==NULL)
break;
gw = (pgw_t*)*dest;
if ( (gw->flags & DR_DST_STAT_DIRT_FLAG)==0 )
/* nothing to do for this gateway */
continue;
/* populate the update */
val_cmp.val.str_val = gw->id;
val_set.val.int_val = (gw->flags&DR_DST_STAT_DSBL_FLAG) ? ((gw->flags&DR_DST_STAT_NOEN_FLAG)?1:2) : (0);
/* update the state of this gateway */
LM_DBG("updating the state of gw <%.*s> to %d\n",
gw->id.len, gw->id.s, val_set.val.int_val);
CON_PS_REFERENCE(*hd->db_con) = gw_ps;
if ( (hd->db_funcs).update(*hd->db_con,&key_cmp,0,&val_cmp,&key_set,&val_set,1,1)<0 ) {
LM_ERR("DB update failed\n");
} else {
gw->flags &= ~DR_DST_STAT_DIRT_FLAG;
}
}
/* update the carriers */
if ((hd->db_funcs).use_table( *hd->db_con, &(hd->drc_table)) < 0) {
LM_ERR("cannot select table \"%.*s\"\n", hd->drc_table.len, hd->drc_table.s);
return;
}
key_cmp = &cid_drc_col;
key_set = &state_drc_col;
/* iterate the carriers */
for (map_first( (*hd->rdata)->carriers_tree, &it);
iterator_is_valid(&it); iterator_next(&it)) {
dest = iterator_val(&it);
if (dest==NULL)
break;
cr = (pcr_t*)*dest;
if ( (cr->flags & DR_CR_FLAG_DIRTY)==0 )
/* nothing to do for this carrier */
continue;
/* populate the update */
val_cmp.val.str_val = cr->id;
val_set.val.int_val = (cr->flags&DR_CR_FLAG_IS_OFF) ? 1 : 0;
/* update the state of this carrier */
LM_DBG("updating the state of cr <%.*s> to %d\n",
cr->id.len, cr->id.s, val_set.val.int_val);
CON_PS_REFERENCE(*hd->db_con) = cr_ps;
if ( (hd->db_funcs).update(*hd->db_con,&key_cmp,0,&val_cmp,&key_set,&val_set,1,1)<0 ) {
LM_ERR("DB update failed\n");
} else {
cr->flags &= ~DR_CR_FLAG_DIRTY;
}
}
return;
}
/* Flushes to DB the state of carriers and gateways (if modified)
* Locking is done to protect the data consistency */
static void dr_state_timer(unsigned int ticks, void* param)
{
struct head_db * it;
it = head_db_start;
while( it!=NULL ) {
lock_start_read( it->ref_lock );
dr_state_flusher(it);
lock_stop_read( it->ref_lock );
it = it->next;
}
}
/*
* if none is successfully loaded return
* -1, else return 0
*/
static inline int dr_reload_data_head( struct head_db *hd )
{
rt_data_t *new_data;
rt_data_t *old_data;
pgw_t *gw, *old_gw;
pcr_t *cr, *old_cr;
time_t rawtime;
void **dest;
map_iterator_t it;
if (no_concurrent_reload) {
lock_get( hd->ref_lock->lock );
if (hd->ongoing_reload) {
lock_release( hd->ref_lock->lock );
LM_WARN("Reload already in progress, discarding this one\n");
return -2;
}
hd->ongoing_reload = 1;
lock_release( hd->ref_lock->lock );
}
new_data = dr_load_routing_info(hd, dr_persistent_state);
if ( new_data==0 ) {
LM_CRIT("failed to load routing info\n");
goto error;
}
lock_start_write( hd->ref_lock );
/* no more activ readers -> do the swapping */
old_data = *(hd->rdata);
*(hd->rdata) = new_data;
/* update the time of the last reload for the current partition */
time(&rawtime);
hd->time_last_update = rawtime;
lock_stop_write( (hd->ref_lock) );
/* destroy old data */
if (old_data) {
/* copy the state of gw/cr from old data */
/* interate new gws and search them into old data */
for (map_first(new_data->pgw_tree, &it);
iterator_is_valid(&it); iterator_next(&it)) {
dest = iterator_val(&it);
if(dest==NULL)
break;
gw=(pgw_t *)*dest;
old_gw = get_gw_by_id( old_data->pgw_tree, &gw->id);
if (old_gw) {
gw->flags &= ~DR_DST_STAT_MASK;
gw->flags |= old_gw->flags&DR_DST_STAT_MASK;
}
}
/* interate new crs and search them into old data */
for (map_first(new_data->carriers_tree, &it);
iterator_is_valid(&it); iterator_next(&it)) {
dest = iterator_val(&it);
if(dest==NULL)
break;
cr=(pcr_t *)*dest;
old_cr = get_carrier_by_id( old_data->carriers_tree, &cr->id);
if (old_cr) {
cr->flags &= ~DR_CR_FLAG_IS_OFF;
cr->flags |= old_cr->flags&DR_CR_FLAG_IS_OFF;
}
}
/* free old data */
free_rt_data( old_data, 1 );
}
/* generate new blacklist from the routing info */
populate_dr_bls((*(hd->rdata))->pgw_tree);
if (no_concurrent_reload)
hd->ongoing_reload = 0;
return 0;
error:
if (no_concurrent_reload)
hd->ongoing_reload = 0;
return -1;
}
static inline int dr_reload_data( void ) {
struct head_db * it_head_db;
int ret_val = 0;
for( it_head_db=head_db_start; it_head_db!=NULL;
it_head_db=it_head_db->next ) {
if( dr_reload_data_head( it_head_db )!=0 )
ret_val = -1;
}
return ret_val;
}
#define dr_fix_avp_def_w_default( _pv_spec, _avp_id, _default, _p_name, _name)\
if(_pv_spec.s == NULL) { \
if(use_partitions) {\
_pv_spec.len = _default.len + _p_name.len;\
_pv_spec.s = shm_malloc((_pv_spec.len)*sizeof(char));\
memcpy(_pv_spec.s, _default.s, _default.len-1);\
memcpy(_pv_spec.s + _default.len - 1, _p_name.s, _p_name.len);\
_pv_spec.s[_pv_spec.len-1] = ')';\
LM_DBG("name with partition:%.*s\n",_pv_spec.len, _pv_spec.s);\
}\
else { \
shm_str_dup(&_pv_spec, &_default);\
}\
}\
dr_fix_avp_definition(_pv_spec, _avp_id, _name);
#define dr_fix_avp_definition( _pv_spec, _avp_id, _name) \
do { \
if (pv_parse_spec( &_pv_spec, &avp_spec)==0 \
|| avp_spec.type!=PVT_AVP) { \
_pv_spec.len = strlen(_pv_spec.s); \
LM_ERR("malformed or non AVP [%.*s] for %s AVP definition\n",\
_pv_spec.len, _pv_spec.s, _name); \
head_db_end->db_url.s = 0;\
goto skip;\
} \
if( pv_get_avp_name(0, &(avp_spec.pvp), &_avp_id, &dummy )!=0) { \