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drouting.c
5033 lines (4222 loc) · 134 KB
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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.
*/
#include <stdlib.h>
#include <stdio.h>
#include <assert.h>
#include <unistd.h>
#include "../../evi/evi.h"
#include "../../map.h"
#include "../../ipc.h"
#include "dr_load.h"
#include "prefix_tree.h"
#include "dr_bl.h"
#include "dr_db_def.h"
#include "dr_partitions.h"
#include "dr_clustering.h"
#include "dr_api.h"
#include "dr_api_internal.h"
#include "dr_cb.h"
#include "../../mem/rpm_mem.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_USE_QR (1<<4)
#define DR_PARAM_INTERNAL_TRIGGERED (1<<30)
#define DRD_TABLE_VER 6
#define DRR_TABLE_VER 4
#define DRG_TABLE_VER 2
#define DRC_TABLE_VER 3
#define PART_TABLE_VER 1
#define MAX_LEN_NAME_W_PART 510 /* max len of variable containing
avp_spec and partition name */
#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))
#define MI_DEFAULT_PROBING_STATE 1
#define MI_PROBING_DISABLED_S "Gateways probing disabled from script"
/* 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 char *dr_probe_sock_s = NULL;
struct socket_info *dr_probe_sock = NULL;
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;
/* restart persistency */
int dr_rpm_enable = 0;
struct head_cache *dr_cache;
/*
* 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;
rw_lock_t *reload_lock; /* lock to protect the partitions while reloading */
//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;
int *n_partitions; /* total number of partitions (does not change at runtime) */
struct head_db *head_db_start;
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_NO_PART } type;
} dr_partition_t;
typedef struct dr_part_group {
dr_partition_t * dr_part;
dr_group_t * group;
} dr_part_group_t;
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;
typedef struct dr_dst_ids {
int gw_id;
int cr_id;
} dr_dst_ids_t;
static int get_config_from_db();
static int add_head_config();
struct head_cache *get_head_cache(str *part);
struct head_cache *add_head_cache(str *part);
void clean_head_cache(struct head_cache *c);
void init_head_db(struct head_db *new);
static int db_load_head(struct head_db*); /* used for populating head_db with
db connections and db funcs */
static char *extra_prefix_chars;
/* 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 fix_flags(void** param);
static int fix_partition(void** param);
static int fix_rule_attr(void** param);
static int fix_gw_attr(void** param);
static int fix_carr_attr(void** param);
static int w_do_routing(struct sip_msg* msg, int *grp, long flags, str *wl,
pv_spec_t* rule_att, pv_spec_t* gw_att, pv_spec_t* carr_att,
struct head_db *part);
static int do_routing(struct sip_msg* msg, struct head_db *part, int grp,
int flags, str* wl);
static int route2_carrier(struct sip_msg* msg, str* ids,
pv_spec_t* gw_att, pv_spec_t* carr_att, struct head_db *part);
static int route2_gw(struct sip_msg* msg, str* ids, pv_spec_t* gw_attr,
struct head_db *part);
static int use_next_gw(struct sip_msg* msg,
pv_spec_t* rule_att, pv_spec_t* gw_att, pv_spec_t* carr_att,
struct head_db *part);
#define DR_IFG_STRIP_FLAG (1<<0)
#define DR_IFG_PREFIX_FLAG (1<<1)
#define DR_IFG_IDS_FLAG (1<<3)
#define DR_IFG_IGNOREPORT_FLAG (1<<4)
#define DR_IFG_CARRIERID_FLAG (1<<5)
static int fix_gw_flags(void** param);
static int _is_dr_gw(struct sip_msg* msg, struct head_db *current_partition,
int flags, int type, struct ip_addr *ip, unsigned int port);
static int is_from_gw(struct sip_msg* msg, int *type, long flags,
pv_spec_t* gw_att, struct head_db *part);
static int goes_to_gw(struct sip_msg* msg, int *type, long flags,
pv_spec_t* gw_att, struct head_db *part);
static int dr_is_gw(struct sip_msg* msg, str *uri, int *type, long flags,
pv_spec_t* gw_att, struct head_db *part);
static int dr_disable(struct sip_msg *req, struct head_db *current_partition);
mi_response_t *dr_reload_cmd(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *dr_reload_cmd_1(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_gw_status_1(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_gw_status_2(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_gw_status_3(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_gw_status_4(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_gw_status_5(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_gw_status_6(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_cr_status_1(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_cr_status_2(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_cr_status_3(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_cr_status_4(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_cr_status_5(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_cr_status_6(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_number_routing_1(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_number_routing_2(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_number_routing_3(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_number_routing_4(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_reload_status(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_reload_status_1(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_enable_probing(const mi_params_t *params,
struct mi_handler *async_hdl);
mi_response_t *mi_dr_enable_probing_1(const mi_params_t *params,
struct mi_handler *async_hdl);
/*0-> disabled, 1 ->enabled*/
unsigned int *dr_enable_probing_state=0;
/* sorting functions used by dr */
static void no_sort(void *params);
static void weight_based_sort_cb(void *params);
static int weight_based_sort(pgw_list_t *pgwl, int size, unsigned short *idx);
static int sort_rt_dst(rt_info_t *dr_rule, unsigned short dst_id, unsigned short *idx);
static inline int get_pgwl_params(struct dr_sort_params *sort_params,
pgw_list_t **pgwl, int *size, unsigned short **sorted_dst);
/* 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)w_do_routing,
{ {CMD_PARAM_INT|CMD_PARAM_OPT, NULL, NULL},
{CMD_PARAM_STR|CMD_PARAM_OPT, fix_flags, NULL},
{CMD_PARAM_STR|CMD_PARAM_OPT, NULL, NULL},
{CMD_PARAM_VAR|CMD_PARAM_OPT, fix_rule_attr, NULL},
{CMD_PARAM_VAR|CMD_PARAM_OPT, fix_gw_attr, NULL},
{CMD_PARAM_VAR|CMD_PARAM_OPT, fix_carr_attr, NULL},
{CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fix_partition,NULL},
{0 , 0, 0}
},
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE|BRANCH_ROUTE
},
{"route_to_carrier", (cmd_function)route2_carrier,
{ {CMD_PARAM_STR, NULL, NULL},
{CMD_PARAM_VAR|CMD_PARAM_OPT, fix_gw_attr, NULL},
{CMD_PARAM_VAR|CMD_PARAM_OPT, fix_carr_attr, NULL},
{CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fix_partition,NULL},
{0 , 0, 0}
},
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE|BRANCH_ROUTE
},
{"route_to_gw", (cmd_function)route2_gw,
{ {CMD_PARAM_STR, NULL, NULL},
{CMD_PARAM_VAR|CMD_PARAM_OPT, fix_gw_attr, NULL},
{CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fix_partition,NULL},
{0 , 0, 0}
},
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE|BRANCH_ROUTE
},
{"use_next_gw", (cmd_function)use_next_gw,
{ {CMD_PARAM_VAR|CMD_PARAM_OPT, fix_rule_attr, NULL},
{CMD_PARAM_VAR|CMD_PARAM_OPT, fix_gw_attr, NULL},
{CMD_PARAM_VAR|CMD_PARAM_OPT, fix_carr_attr, NULL},
{CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fix_partition,NULL},
{0 , 0, 0}
},
REQUEST_ROUTE|FAILURE_ROUTE|LOCAL_ROUTE|BRANCH_ROUTE
},
{"is_from_gw", (cmd_function)is_from_gw,
{ {CMD_PARAM_INT|CMD_PARAM_OPT, NULL, NULL},
{CMD_PARAM_STR|CMD_PARAM_OPT, fix_gw_flags, NULL},
{CMD_PARAM_VAR|CMD_PARAM_OPT, fix_gw_attr, NULL},
{CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fix_partition,NULL},
{0 , 0, 0}
},
REQUEST_ROUTE|FAILURE_ROUTE|BRANCH_ROUTE|ONREPLY_ROUTE
},
{"goes_to_gw", (cmd_function)goes_to_gw,
{ {CMD_PARAM_INT|CMD_PARAM_OPT, NULL, NULL},
{CMD_PARAM_STR|CMD_PARAM_OPT, fix_gw_flags, NULL},
{CMD_PARAM_VAR|CMD_PARAM_OPT, fix_gw_attr, NULL},
{CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fix_partition,NULL},
{0 , 0, 0}
},
REQUEST_ROUTE|FAILURE_ROUTE|BRANCH_ROUTE|ONREPLY_ROUTE
},
{"dr_is_gw", (cmd_function)dr_is_gw,
{ {CMD_PARAM_STR, NULL, NULL},
{CMD_PARAM_INT|CMD_PARAM_OPT, NULL, NULL},
{CMD_PARAM_STR|CMD_PARAM_OPT, fix_gw_flags, NULL},
{CMD_PARAM_VAR|CMD_PARAM_OPT, fix_gw_attr, NULL},
{CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fix_partition,NULL},
{0 , 0, 0}
},
REQUEST_ROUTE|FAILURE_ROUTE|BRANCH_ROUTE|ONREPLY_ROUTE|
LOCAL_ROUTE|STARTUP_ROUTE|TIMER_ROUTE|EVENT_ROUTE
},
{"dr_disable", (cmd_function)dr_disable,
{ {CMD_PARAM_STR|CMD_PARAM_OPT|CMD_PARAM_FIX_NULL, fix_partition,NULL},
{0 , 0, 0}
},
REQUEST_ROUTE|FAILURE_ROUTE|BRANCH_ROUTE|ONREPLY_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_socket", STR_PARAM, &dr_probe_sock_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 },
{"cluster_id", INT_PARAM, &dr_cluster_id },
{"cluster_sharing_tag",STR_PARAM, &dr_cluster_shtag },
{"enable_restart_persistency",INT_PARAM, &dr_rpm_enable },
{"extra_prefix_chars", STR_PARAM, &extra_prefix_chars },
{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."
#define HLP6 "Params: [ enable ] ; Enables probing of gateways if parameter "\
"value greater than 0. Disables probing of gateways if parameter"\
"value is 0. With no parameter, returns current probing status"
static mi_export_t mi_cmds[] = {
{ "dr_reload", HLP1, 0, 0, {
{dr_reload_cmd, {0}},
{dr_reload_cmd_1, {"partition_name", 0}},
{EMPTY_MI_RECIPE}}
},
{ "dr_gw_status", HLP2, MI_NAMED_PARAMS_ONLY, 0, {
{mi_dr_gw_status_1, {0}},
{mi_dr_gw_status_2, {"partition_name", 0}},
{mi_dr_gw_status_3, {"gw_id", 0}},
{mi_dr_gw_status_4, {"gw_id", "status", 0}},
{mi_dr_gw_status_5, {"partition_name", "gw_id", 0}},
{mi_dr_gw_status_6, {"partition_name", "gw_id", "status", 0}},
{EMPTY_MI_RECIPE}}
},
{ "dr_carrier_status", HLP3, MI_NAMED_PARAMS_ONLY, 0, {
{mi_dr_cr_status_1, {0}},
{mi_dr_cr_status_2, {"partition_name", 0}},
{mi_dr_cr_status_3, {"carrier_id", 0}},
{mi_dr_cr_status_4, {"carrier_id", "status", 0}},
{mi_dr_cr_status_5, {"partition_name", "carrier_id", 0}},
{mi_dr_cr_status_6, {"partition_name", "carrier_id", "status", 0}},
{EMPTY_MI_RECIPE}}
},
{ "dr_number_routing", HLP4, MI_NAMED_PARAMS_ONLY, 0, {
{mi_dr_number_routing_1, {"number"}},
{mi_dr_number_routing_2, {"group_id", "number", 0}},
{mi_dr_number_routing_3, {"partition_name", "number"}},
{mi_dr_number_routing_4, {"partition_name", "group_id", "number"}},
{EMPTY_MI_RECIPE}}
},
{ "dr_reload_status", HLP5, 0, 0, {
{mi_dr_reload_status, {0}},
{mi_dr_reload_status_1, {"partition_name", 0}},
{EMPTY_MI_RECIPE}}
},
{ "dr_enable_probing", HLP6, 0, 0, {
{mi_dr_enable_probing, {0}},
{mi_dr_enable_probing_1, {"status", 0}},
{EMPTY_MI_RECIPE}}
},
{EMPTY_MI_EXPORT}
};
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 },
{ "cluster_id", get_deps_clusterer},
{ NULL, NULL },
},
};
struct module_exports exports = {
"drouting",
MOD_TYPE_DEFAULT,/* class of this module */
MODULE_VERSION,
DEFAULT_DLFLAGS, /* dlopen flags */
0, /* load function */
&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, /* exported transformations */
0, /* additional processes */
0, /* Module pre-initialization function */
dr_init, /* Module initialization function */
(response_function) 0,
(destroy_function) dr_exit,
(child_init_function) dr_child_init, /* per-child init function */
0 /* reload confirm 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 str dr_partition_str = str_init("partition");
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");
void dr_raise_event(struct head_db *p, 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_partition_str, &p->partition) < 0) {
LM_ERR("cannot add partition\n");
goto error;
}
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 void dr_gw_status_changed(struct head_db *p, pgw_t *gw)
{
/* do Cluster replication*/
replicate_dr_gw_status_event( p, gw);
/* raise the event */
dr_raise_event( p, gw);
}
static int dr_disable(struct sip_msg *req, struct head_db * current_partition)
{
struct usr_avp *avp;
int_str id_val;
pgw_t *gw;
if (current_partition==NULL) {
LM_ERR("Partition name is mandatory!\n");
return -1;
}
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_DBG("partition : %.*s\n", current_partition->partition.len,
current_partition->partition.s);
gw->flags |= DR_DST_STAT_DSBL_FLAG|DR_DST_STAT_DIRT_FLAG;
dr_gw_status_changed( current_partition, 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_gw_status_changed( current_partition, 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_gw_status_changed( current_partition, 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;
if ((*dr_enable_probing_state) == 0 ||
!dr_cluster_shtag_is_active() )
return;
while( it!=NULL ) {
if (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, NULL, NULL,
dst->sock?dst->sock:dr_probe_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, disabling destination...\n");
if ( (dst->flags&DR_DST_STAT_DSBL_FLAG)==0 ) {
dst->flags |= DR_DST_STAT_DSBL_FLAG|DR_DST_STAT_DIRT_FLAG;
dr_gw_status_changed( it, dst);
}
}
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)
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,
void *qr_parts, int part_index, str *part_name, int initial)
{
rt_data_t *new_data;
rt_data_t *old_data;
pgw_t *gw, *old_gw;
pcr_t *cr, *old_cr;
time_t rawtime;
struct head_cache *cache = NULL;
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;
}