/
dispatcher.c
1060 lines (917 loc) · 26.5 KB
/
dispatcher.c
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/**
* $Id$
*
* dispatcher module -- stateless load balancing
*
* Copyright (C) 2004-2005 FhG Fokus
* Copyright (C) 2006-2010 Voice Sistem SRL
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* History
* -------
* 2004-07-31 first version, by daniel
* 2007-01-11 Added a function to check if a specific gateway is in a group
* (carsten - Carsten Bock, BASIS AudioNet GmbH)
* 2007-02-09 Added active probing of failed destinations and automatic
* re-enabling of destinations (carsten)
* 2007-05-08 Ported the changes to SVN-Trunk and renamed ds_is_domain
* to ds_is_from_list. (carsten)
* 2007-07-18 Added support for load/reload groups from DB
* reload triggered from ds_reload MI_Command (ancuta)
* 2009-05-18 Added support for weights for the destinations;
* added support for custom "attrs" (opaque string) (bogdan)
* 2013-12-02 Added support state persistency (restart and reload) (bogdan)
* 2013-12-05 Added a safer reload mechanism based on locking read/writter (bogdan)
*/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include "../../sr_module.h"
#include "../../mi/mi.h"
#include "../../dprint.h"
#include "../../error.h"
#include "../../ut.h"
#include "../../route.h"
#include "../../mem/mem.h"
#include "../../mod_fix.h"
#include "../../db/db.h"
#include "dispatch.h"
#include "ds_bl.h"
#define DS_SET_ID_COL "setid"
#define DS_DEST_URI_COL "destination"
#define DS_DEST_SOCK_COL "socket"
#define DS_DEST_STATE_COL "state"
#define DS_DEST_WEIGHT_COL "weight"
#define DS_DEST_ATTRS_COL "attrs"
#define DS_TABLE_NAME "dispatcher"
/** parameters */
int ds_force_dst = 0;
int ds_flags = 0;
int ds_use_default = 0;
static str dst_avp_param = str_init("$avp(ds_dst_failover)");
static str grp_avp_param = str_init("$avp(ds_grp_failover)");
static str cnt_avp_param = str_init("$avp(ds_cnt_failover)");
static str sock_avp_param = str_init("$avp(ds_sock_failover)");
static str attrs_avp_param = {NULL, 0};
static str pvar_algo_param = str_init("");
str hash_pvar_param = {NULL, 0};
int dst_avp_name;
unsigned short dst_avp_type;
int grp_avp_name;
unsigned short grp_avp_type;
int cnt_avp_name;
unsigned short cnt_avp_type;
int sock_avp_name;
unsigned short sock_avp_type;
int attrs_avp_name;
unsigned short attrs_avp_type;
pv_elem_t * hash_param_model = NULL;
int probing_threshhold = 3; /* number of failed requests, before a destination
is taken into probing */
str ds_ping_method = {"OPTIONS",7};
str ds_ping_from = {"sip:dispatcher@localhost", 24};
static int ds_ping_interval = 0;
int ds_probing_mode = 0;
/*db */
str ds_db_url = {NULL, 0};
str ds_set_id_col = str_init(DS_SET_ID_COL);
str ds_dest_uri_col = str_init(DS_DEST_URI_COL);
str ds_dest_sock_col = str_init(DS_DEST_SOCK_COL);
str ds_dest_state_col = str_init(DS_DEST_STATE_COL);
str ds_dest_weight_col= str_init(DS_DEST_WEIGHT_COL);
str ds_dest_attrs_col = str_init(DS_DEST_ATTRS_COL);
str ds_table_name = str_init(DS_TABLE_NAME);
str ds_setid_pvname = {NULL, 0};
pv_spec_t ds_setid_pv;
static str options_reply_codes_str= {0, 0};
static int* options_reply_codes = NULL;
static int options_codes_no;
static char *probing_sock_s = NULL;
struct socket_info *probing_sock = NULL;
/* event */
static str dispatcher_event = str_init("E_DISPATCHER_STATUS");
event_id_t dispatch_evi_id;
/** module functions */
static int mod_init(void);
static int ds_child_init(int rank);
static int w_ds_select_dst(struct sip_msg*, char*, char*);
static int w_ds_select_dst_limited(struct sip_msg*, char*, char*, char*);
static int w_ds_select_domain(struct sip_msg*, char*, char*);
static int w_ds_select_domain_limited(struct sip_msg*, char*, char*, char*);
static int w_ds_next_dst(struct sip_msg*, char*, char*);
static int w_ds_next_domain(struct sip_msg*, char*, char*);
static int w_ds_mark_dst0(struct sip_msg*, char*, char*);
static int w_ds_mark_dst1(struct sip_msg*, char*, char*);
static int w_ds_count(struct sip_msg*, char*, const char *, char*);
static int w_ds_is_in_list2(struct sip_msg*, char*, char*);
static int w_ds_is_in_list3(struct sip_msg*, char*, char*, char*);
static int w_ds_is_in_list4(struct sip_msg*, char*, char*, char*, char*);
static void destroy(void);
static int in_list_fixup(void** param, int param_no);
static int ds_count_fixup(void** param, int param_no);
static struct mi_root* ds_mi_set(struct mi_root* cmd, void* param);
static struct mi_root* ds_mi_list(struct mi_root* cmd, void* param);
static struct mi_root* ds_mi_reload(struct mi_root* cmd_tree, void* param);
static int mi_child_init(void);
static cmd_export_t cmds[]={
{"ds_select_dst", (cmd_function)w_ds_select_dst, 2, fixup_igp_igp, 0,
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_select_dst", (cmd_function)w_ds_select_dst_limited, 3, fixup_igp_igp_igp, 0,
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_select_domain", (cmd_function)w_ds_select_domain, 2, fixup_igp_igp, 0,
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_select_domain", (cmd_function)w_ds_select_domain_limited, 3, fixup_igp_igp_igp, 0,
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_next_dst", (cmd_function)w_ds_next_dst, 0, NULL , 0,
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_next_domain", (cmd_function)w_ds_next_domain, 0, NULL , 0,
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_mark_dst", (cmd_function)w_ds_mark_dst0, 0, NULL , 0,
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_mark_dst", (cmd_function)w_ds_mark_dst1, 1, NULL , 0,
REQUEST_ROUTE|FAILURE_ROUTE},
{"ds_is_in_list", (cmd_function)w_ds_is_in_list2, 2, in_list_fixup, 0,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE},
{"ds_is_in_list", (cmd_function)w_ds_is_in_list3, 3, in_list_fixup, 0,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE},
{"ds_is_in_list", (cmd_function)w_ds_is_in_list4, 4, in_list_fixup, 0,
REQUEST_ROUTE|FAILURE_ROUTE|ONREPLY_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE},
{"ds_count", (cmd_function)w_ds_count, 3, ds_count_fixup, 0,
REQUEST_ROUTE|FAILURE_ROUTE|BRANCH_ROUTE|LOCAL_ROUTE|TIMER_ROUTE|EVENT_ROUTE},
{0,0,0,0,0,0}
};
static param_export_t params[]={
{"db_url", STR_PARAM, &ds_db_url.s},
{"table_name", STR_PARAM, &ds_table_name.s},
{"setid_col", STR_PARAM, &ds_set_id_col.s},
{"destination_col", STR_PARAM, &ds_dest_uri_col.s},
{"socket_col", STR_PARAM, &ds_dest_sock_col.s},
{"state_col", STR_PARAM, &ds_dest_state_col.s},
{"weight_col", STR_PARAM, &ds_dest_weight_col.s},
{"attrs_col", STR_PARAM, &ds_dest_attrs_col.s},
{"force_dst", INT_PARAM, &ds_force_dst},
{"flags", INT_PARAM, &ds_flags},
{"use_default", INT_PARAM, &ds_use_default},
{"dst_avp", STR_PARAM, &dst_avp_param.s},
{"grp_avp", STR_PARAM, &grp_avp_param.s},
{"cnt_avp", STR_PARAM, &cnt_avp_param.s},
{"sock_avp", STR_PARAM, &sock_avp_param.s},
{"attrs_avp", STR_PARAM, &attrs_avp_param.s},
{"hash_pvar", STR_PARAM, &hash_pvar_param.s},
{"setid_pvar", STR_PARAM, &ds_setid_pvname.s},
{"pvar_algo_pattern", STR_PARAM, &pvar_algo_param.s},
{"ds_probing_threshhold", INT_PARAM, &probing_threshhold},
{"ds_ping_method", STR_PARAM, &ds_ping_method.s},
{"ds_ping_from", STR_PARAM, &ds_ping_from.s},
{"ds_ping_interval", INT_PARAM, &ds_ping_interval},
{"ds_probing_mode", INT_PARAM, &ds_probing_mode},
{"options_reply_codes", STR_PARAM, &options_reply_codes_str.s},
{"ds_probing_sock", STR_PARAM, &probing_sock_s},
{"ds_define_blacklist", STR_PARAM|USE_FUNC_PARAM, (void*)set_ds_bl},
{0,0,0}
};
static mi_export_t mi_cmds[] = {
{ "ds_set_state", 0, ds_mi_set, 0, 0, 0 },
{ "ds_list", 0, ds_mi_list, MI_NO_INPUT_FLAG, 0, 0 },
{ "ds_reload", 0, ds_mi_reload, 0, 0, mi_child_init},
{ 0, 0, 0, 0, 0, 0}
};
/** module exports */
struct module_exports exports= {
"dispatcher",
MODULE_VERSION,
DEFAULT_DLFLAGS, /* dlopen flags */
cmds,
params,
0, /* exported statistics */
mi_cmds, /* exported MI functions */
0, /* exported pseudo-variables */
0, /* extra processes */
mod_init, /* module initialization function */
(response_function) 0,
(destroy_function) destroy,
ds_child_init, /* per-child init function */
};
/**
* init module function
*/
static int mod_init(void)
{
pv_spec_t avp_spec;
LM_DBG("initializing ...\n");
/* Load stuff from DB */
init_db_url( ds_db_url , 0 /*cannot be null*/);
ds_table_name.len = strlen(ds_table_name.s);
ds_set_id_col.len = strlen(ds_set_id_col.s);
ds_dest_uri_col.len = strlen(ds_dest_uri_col.s);
ds_dest_sock_col.len = strlen(ds_dest_sock_col.s);
ds_dest_state_col.len = strlen(ds_dest_state_col.s);
ds_dest_weight_col.len = strlen(ds_dest_weight_col.s);
ds_dest_attrs_col.len = strlen(ds_dest_attrs_col.s);
/* handle AVPs spec */
dst_avp_param.len = strlen(dst_avp_param.s);
if (pv_parse_spec(&dst_avp_param, &avp_spec)==0
|| avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s AVP definition\n",
dst_avp_param.len, dst_avp_param.s);
return -1;
}
if(pv_get_avp_name(0, &(avp_spec.pvp), &dst_avp_name,&dst_avp_type)!=0) {
LM_ERR("[%.*s]- invalid AVP definition\n", dst_avp_param.len,
dst_avp_param.s);
return -1;
}
grp_avp_param.len=strlen(grp_avp_param.s);
if (pv_parse_spec(&grp_avp_param, &avp_spec)==0
|| avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s AVP definition\n",
grp_avp_param.len, grp_avp_param.s);
return -1;
}
if(pv_get_avp_name(0, &(avp_spec.pvp), &grp_avp_name,&grp_avp_type)!=0) {
LM_ERR("[%.*s]- invalid AVP definition\n", grp_avp_param.len,
grp_avp_param.s);
return -1;
}
cnt_avp_param.len=strlen(cnt_avp_param.s);
if (pv_parse_spec(&cnt_avp_param, &avp_spec)==0
|| avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s AVP definition\n",
cnt_avp_param.len, cnt_avp_param.s);
return -1;
}
if(pv_get_avp_name(0, &(avp_spec.pvp), &cnt_avp_name,&cnt_avp_type)!=0) {
LM_ERR("[%.*s]- invalid AVP definition\n", cnt_avp_param.len,
cnt_avp_param.s);
return -1;
}
sock_avp_param.len=strlen(sock_avp_param.s);
if (pv_parse_spec(&sock_avp_param, &avp_spec)==0
|| avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s AVP definition\n",
sock_avp_param.len, sock_avp_param.s);
return -1;
}
if(pv_get_avp_name(0, &(avp_spec.pvp), &sock_avp_name,&sock_avp_type)!=0){
LM_ERR("[%.*s]- invalid AVP definition\n", sock_avp_param.len,
sock_avp_param.s);
return -1;
}
if (attrs_avp_param.s && (attrs_avp_param.len=strlen(attrs_avp_param.s)) > 0) {
if (pv_parse_spec(&attrs_avp_param, &avp_spec)==0
|| avp_spec.type!=PVT_AVP) {
LM_ERR("malformed or non AVP %.*s AVP definition\n",
attrs_avp_param.len, attrs_avp_param.s);
return -1;
}
if (pv_get_avp_name(0, &(avp_spec.pvp), &attrs_avp_name,
&attrs_avp_type)!=0){
LM_ERR("[%.*s]- invalid AVP definition\n", attrs_avp_param.len,
attrs_avp_param.s);
return -1;
}
} else {
attrs_avp_name = -1;
attrs_avp_type = 0;
}
if (hash_pvar_param.s && (hash_pvar_param.len=strlen(hash_pvar_param.s))>0 ) {
if(pv_parse_format(&hash_pvar_param, &hash_param_model) < 0
|| hash_param_model==NULL) {
LM_ERR("malformed PV string: %s\n", hash_pvar_param.s);
return -1;
}
} else {
hash_param_model = NULL;
}
if (ds_setid_pvname.s && (ds_setid_pvname.len=strlen(ds_setid_pvname.s))>0 ) {
if(pv_parse_spec(&ds_setid_pvname, &ds_setid_pv)==NULL
|| !pv_is_w(&ds_setid_pv))
{
LM_ERR("[%s]- invalid setid_pvname\n", ds_setid_pvname.s);
return -1;
}
}
pvar_algo_param.len = strlen(pvar_algo_param.s);
if (pvar_algo_param.len)
ds_pvar_parse_pattern(pvar_algo_param);
if (init_ds_bls()!=0) {
LM_ERR("failed to init DS blacklists\n");
return E_CFG;
}
if (init_ds_data()!=0) {
LM_ERR("failed to init DS data holder\n");
return -1;
}
/* open DB connection to load provisioning data */
if (init_ds_db()!= 0) {
LM_ERR("failed to init database support\n");
return -1;
}
/* do the actula data load */
if (ds_reload_db()!=0) {
LM_ERR("failed to load data from DB\n");
return -1;
}
/* close DB connection */
ds_disconnect_db();
/* Only, if the Probing-Timer is enabled the TM-API needs to be loaded: */
if (ds_ping_interval > 0)
{
load_tm_f load_tm;
str host;
int port,proto;
if (ds_ping_from.s)
ds_ping_from.len = strlen(ds_ping_from.s);
if (ds_ping_method.s)
ds_ping_method.len = strlen(ds_ping_method.s);
/* parse the list of reply codes to be counted as success */
if(options_reply_codes_str.s) {
options_reply_codes_str.len = strlen(options_reply_codes_str.s);
if(parse_reply_codes( &options_reply_codes_str, &options_reply_codes,
&options_codes_no )< 0) {
LM_ERR("Bad format for options_reply_code parameter"
" - Need a code list separated by commas\n");
return -1;
}
}
/* parse and look for the socket to ping from */
if (probing_sock_s && probing_sock_s[0]!=0 ) {
if (parse_phostport( probing_sock_s, strlen(probing_sock_s),
&host.s, &host.len, &port, &proto)!=0 ) {
LM_ERR("socket description <%s> is not valid\n",
probing_sock_s);
return -1;
}
probing_sock = grep_sock_info( &host, port, proto);
if (probing_sock==NULL) {
LM_ERR("socket <%s> is not local to opensips (we must listen "
"on it\n", probing_sock_s);
return -1;
}
}
/* TM-Bindings */
load_tm=(load_tm_f)find_export("load_tm", 0, 0);
if (load_tm==NULL) {
LM_ERR("failed to bind to the TM-Module - required for probing\n");
return -1;
}
/* let the auto-loading function load all TM stuff */
if (load_tm( &tmb ) == -1) {
LM_ERR("could not load the TM-functions - disable DS ping\n");
return -1;
}
/* Register the PING-Timer */
if (register_timer("ds-pinger",ds_check_timer,NULL,ds_ping_interval)<0){
LM_ERR("failed to register timer for probing!\n");
return -1;
}
}
/* register timer to flush the state of destination back to DB */
if (register_timer("ds-flusher",ds_flusher_routine,NULL, 30)<0){
LM_ERR("failed to register timer for DB flushing!\n");
return -1;
}
dispatch_evi_id = evi_publish_event(dispatcher_event);
if (dispatch_evi_id == EVI_ERROR)
LM_ERR("cannot register dispatcher event\n");
return 0;
}
/*
* Per process init function
*/
#include "../../pt.h"
static int ds_child_init(int rank)
{
/* we need DB connection from the timer procs (for the flushing)
* and from the main proc (for final flush on shutdown) */
if ( (process_no==0 || rank==PROC_TIMER) && ds_db_url.s)
return ds_connect_db();
return 0;
}
static int mi_child_init(void)
{
if(ds_db_url.s)
return ds_connect_db();
return 0;
}
/**
* destroy function
*/
static void destroy(void)
{
LM_DBG("destroying module ...\n");
/* flush the state of the destinations */
ds_flusher_routine(0, NULL);
ds_destroy_data();
/* destroy blacklists */
destroy_ds_bls();
}
/**
*
*/
static int w_ds_select_dst(struct sip_msg* msg, char* set, char* alg)
{
int i_algo, i_set;
unsigned int algo_flags, set_flags;
str s_algo = {NULL, 0};
str s_set = {NULL, 0};
if(msg==NULL)
return -1;
/* Retrieve dispatcher set */
if(fixup_get_isvalue(msg, (gparam_p)set, &i_set, &s_set, &set_flags)!=0)
{
LM_ERR("no dst set value\n");
return -1;
}
if(!(set_flags&GPARAM_INT_VALUE_FLAG))
{
if(set_flags&GPARAM_STR_VALUE_FLAG)
{
if(str2sint(&s_set, &i_set)!=0)
{
LM_ERR("Unable to get set from [%.*s]\n", s_set.len, s_set.s);
return -1;
}
}
else
{
LM_ERR("unexpected set flags [%ud]\n", set_flags);
return -1;
}
}
/* Retrieve dispatcher algorithm */
if(fixup_get_isvalue(msg, (gparam_p)alg, &i_algo, &s_algo, &algo_flags)!=0)
{
LM_ERR("no alg value\n");
return -1;
}
if(!(algo_flags&GPARAM_INT_VALUE_FLAG))
{
if(algo_flags&GPARAM_STR_VALUE_FLAG)
{
if(str2sint(&s_algo, &i_algo)!=0)
{
LM_ERR("Unable to get algo from [%.*s]\n", s_algo.len, s_algo.s);
return -1;
}
}
else
{
LM_ERR("unexpected algo flags [%u]\n", algo_flags);
return -1;
}
}
return ds_select_dst(msg, i_set, i_algo, 0 /*set dst uri*/, 1000);
}
/**
* same wrapper as w_ds_select_dst, but it allows cutting down the result set
*/
static int w_ds_select_dst_limited(struct sip_msg* msg, char* set, char* alg, char* max_results)
{
int i_algo, i_set, i_max;
unsigned int algo_flags, set_flags, max_flags;
str s_algo = {NULL, 0};
str s_set = {NULL, 0};
str s_max = {NULL, 0};
if(msg==NULL)
return -1;
/* Retrieve dispatcher set */
if(fixup_get_isvalue(msg, (gparam_p)set, &i_set, &s_set, &set_flags)!=0)
{
LM_ERR("no dst set value\n");
return -1;
}
if(!(set_flags&GPARAM_INT_VALUE_FLAG))
{
if(set_flags&GPARAM_STR_VALUE_FLAG)
{
if(str2sint(&s_set, &i_set)!=0)
{
LM_ERR("Unable to get set from [%.*s]\n", s_set.len, s_set.s);
return -1;
}
}
else
{
LM_ERR("unexpected set flags [%u]\n", set_flags);
return -1;
}
}
/* Retrieve dispatcher algorithm */
if(fixup_get_isvalue(msg, (gparam_p)alg, &i_algo, &s_algo, &algo_flags)!=0)
{
LM_ERR("no alg value\n");
return -1;
}
if(!(algo_flags&GPARAM_INT_VALUE_FLAG))
{
if(algo_flags&GPARAM_STR_VALUE_FLAG)
{
if(str2sint(&s_algo, &i_algo)!=0)
{
LM_ERR("Unable to get algo from [%.*s]\n", s_algo.len, s_algo.s);
return -1;
}
}
else
{
LM_ERR("unexpected algo flags [%u]\n", algo_flags);
return -1;
}
}
/* Retrieve dispatcher max results */
if(fixup_get_isvalue(msg, (gparam_p)max_results, &i_max, &s_max, &max_flags)!=0)
{
LM_ERR("no max results value\n");
return -1;
}
if(!(max_flags&GPARAM_INT_VALUE_FLAG))
{
if(max_flags&GPARAM_STR_VALUE_FLAG)
{
if(str2sint(&s_max, &i_max)!=0)
{
LM_ERR("Unable to get max results from [%.*s]\n", s_max.len, s_max.s);
return -1;
}
}
else
{
LM_ERR("unexpected max results flags [%u]\n", max_flags);
return -1;
}
}
return ds_select_dst(msg, i_set, i_algo, 0 /*set dst uri*/, i_max);
}
/**
*
*/
static int w_ds_select_domain(struct sip_msg* msg, char* set, char* alg)
{
int i_algo, i_set;
unsigned int algo_flags, set_flags;
str s_algo = {NULL, 0};
str s_set = {NULL, 0};
if(msg==NULL)
return -1;
/* Retrieve dispatcher set */
if(fixup_get_isvalue(msg, (gparam_p)set, &i_set, &s_set, &set_flags)!=0)
{
LM_ERR("no dst set value\n");
return -1;
}
if(!(set_flags&GPARAM_INT_VALUE_FLAG))
{
if(set_flags&GPARAM_STR_VALUE_FLAG)
{
if(str2sint(&s_set, &i_set)!=0)
{
LM_ERR("Unable to get set from [%.*s]\n", s_set.len, s_set.s);
return -1;
}
}
else
{
LM_ERR("unexpected set flags [%ud]\n", set_flags);
return -1;
}
}
/* Retrieve dispatcher algorithm */
if(fixup_get_isvalue(msg, (gparam_p)alg, &i_algo, &s_algo, &algo_flags)!=0)
{
LM_ERR("no alg value\n");
return -1;
}
if(!(algo_flags&GPARAM_INT_VALUE_FLAG))
{
if(algo_flags&GPARAM_STR_VALUE_FLAG)
{
if(str2sint(&s_algo, &i_algo)!=0)
{
LM_ERR("Unable to get algo from [%.*s]\n", s_algo.len, s_algo.s);
return -1;
}
}
else
{
LM_ERR("unexpected algo flags [%u]\n", algo_flags);
return -1;
}
}
return ds_select_dst(msg, i_set, i_algo, 1/*set host port*/, 1000);
}
/**
*
*/
static int w_ds_select_domain_limited(struct sip_msg* msg, char* set, char* alg, char* max_results)
{
int i_algo, i_set, i_max;
unsigned int algo_flags, set_flags, max_flags;
str s_algo = {NULL, 0};
str s_set = {NULL, 0};
str s_max = {NULL, 0};
if(msg==NULL)
return -1;
/* Retrieve dispatcher set */
if(fixup_get_isvalue(msg, (gparam_p)set, &i_set, &s_set, &set_flags)!=0)
{
LM_ERR("no dst set value\n");
return -1;
}
if(!(set_flags&GPARAM_INT_VALUE_FLAG))
{
if(set_flags&GPARAM_STR_VALUE_FLAG)
{
if(str2sint(&s_set, &i_set)!=0)
{
LM_ERR("Unable to get set from [%.*s]\n", s_set.len, s_set.s);
return -1;
}
}
else
{
LM_ERR("unexpected set flags [%u]\n", set_flags);
return -1;
}
}
/* Retrieve dispatcher algorithm */
if(fixup_get_isvalue(msg, (gparam_p)alg, &i_algo, &s_algo, &algo_flags)!=0)
{
LM_ERR("no alg value\n");
return -1;
}
if(!(algo_flags&GPARAM_INT_VALUE_FLAG))
{
if(algo_flags&GPARAM_STR_VALUE_FLAG)
{
if(str2sint(&s_algo, &i_algo)!=0)
{
LM_ERR("Unable to get algo from [%.*s]\n", s_algo.len, s_algo.s);
return -1;
}
}
else
{
LM_ERR("unexpected algo flags [%u]\n", algo_flags);
return -1;
}
}
/* Retrieve dispatcher max results */
if(fixup_get_isvalue(msg, (gparam_p)max_results, &i_max, &s_max, &max_flags)!=0)
{
LM_ERR("no max results value\n");
return -1;
}
if(!(max_flags&GPARAM_INT_VALUE_FLAG))
{
if(max_flags&GPARAM_STR_VALUE_FLAG)
{
if(str2sint(&s_max, &i_max)!=0)
{
LM_ERR("Unable to get max results from [%.*s]\n", s_max.len, s_max.s);
return -1;
}
}
else
{
LM_ERR("unexpected max results flags [%u]\n", max_flags);
return -1;
}
}
return ds_select_dst(msg, i_set, i_algo, 1/*set host port*/, i_max);
}
/**
*
*/
static int w_ds_next_dst(struct sip_msg *msg, char *str1, char *str2)
{
return ds_next_dst(msg, 0/*set dst uri*/);
}
/**
*
*/
static int w_ds_next_domain(struct sip_msg *msg, char *str1, char *str2)
{
return ds_next_dst(msg, 1/*set host port*/);
}
/**
*
*/
static int w_ds_mark_dst0(struct sip_msg *msg, char *str1, char *str2)
{
return ds_mark_dst(msg, 0);
}
/**
*
*/
static int w_ds_mark_dst1(struct sip_msg *msg, char *str1, char *str2)
{
if(str1 && (str1[0]=='i' || str1[0]=='I' || str1[0]=='0'))
return ds_mark_dst(msg, 0);
else if(str1 && (str1[0]=='p' || str1[0]=='P' || str1[0]=='2'))
return ds_mark_dst(msg, 2);
else
return ds_mark_dst(msg, 1);
}
static int in_list_fixup(void** param, int param_no)
{
if (param_no==1) {
/* the ip to test */
return fixup_pvar(param);
} else if (param_no==2) {
/* the port to test */
if (*param==NULL) {
return 0;
} else if ( *((char*)*param)==0 ) {
pkg_free(*param);
*param = NULL;
return 0;
}
return fixup_pvar(param);
} else if (param_no==3) {
/* the group to check in */
return fixup_uint(param);
} else if (param_no==4) {
/* active only check ? */
return fixup_uint(param);
} else {
LM_CRIT("bug - too many params (%d) in is_in_list()\n",param_no);
return -1;
}
}
static int ds_count_fixup(void** param, int param_no)
{
char *s;
int i, code = 0;
if (param_no > 3)
return 0;
s = (char *)*param;
i = strlen(s);
switch (param_no)
{
case 1:
return fixup_igp(param);
case 2:
while (i--)
{
switch (s[i])
{
/* active */
case 'a':
case 'A':
case '1':
code |= DS_COUNT_ACTIVE;
break;
/* inactive */
case 'i':
case 'I':
case '0':
code |= DS_COUNT_INACTIVE;
break;
/* probing */
case 'p':
case 'P':
case '2':
code |= DS_COUNT_PROBING;
break;
}
}
break;
case 3:
return fixup_igp(param);
}
s[0] = (char)code;
s[1] = '\0';
return 0;
}
/************************** MI STUFF ************************/
static struct mi_root* ds_mi_set(struct mi_root* cmd_tree, void* param)
{
str sp;
int ret;
unsigned int group, state;
struct mi_node* node;
node = cmd_tree->node.kids;
if(node == NULL)
return init_mi_tree( 400, MI_MISSING_PARM_S, MI_MISSING_PARM_LEN);
sp = node->value;
if(sp.len<=0 || !sp.s)
{
LM_ERR("bad state value\n");
return init_mi_tree( 500, "bad state value", 15);
}
state = 1;
if(sp.s[0]=='0' || sp.s[0]=='I' || sp.s[0]=='i')
state = 0;
node = node->next;
if(node == NULL)
return init_mi_tree( 400, MI_MISSING_PARM_S, MI_MISSING_PARM_LEN);
sp = node->value;
if(sp.s == NULL)
{
return init_mi_tree(500, "group not found", 15);
}
if(str2int(&sp, &group))
{
LM_ERR("bad group value\n");
return init_mi_tree( 500, "bad group value", 16);
}
node= node->next;
if(node == NULL)
return init_mi_tree( 400, MI_MISSING_PARM_S, MI_MISSING_PARM_LEN);
sp = node->value;
if(sp.s == NULL)
{
return init_mi_tree(500,"address not found", 18 );
}
if(state==1)
ret = ds_set_state(group, &sp, DS_INACTIVE_DST, 0);
else
ret = ds_set_state(group, &sp, DS_INACTIVE_DST, 1);
if(ret!=0)
{
return init_mi_tree(404, "destination not found", 21);
}
return init_mi_tree( 200, MI_OK_S, MI_OK_LEN);
}
static struct mi_root* ds_mi_list(struct mi_root* cmd_tree, void* param)
{
struct mi_root* rpl_tree;
rpl_tree = init_mi_tree(200, MI_OK_S, MI_OK_LEN);
if (rpl_tree==NULL)
return 0;
if( ds_print_mi_list(&rpl_tree->node)< 0 )
{
LM_ERR("failed to add node\n");
free_mi_tree(rpl_tree);
return 0;
}
return rpl_tree;
}
#define MI_ERR_RELOAD "ERROR Reloading data"
#define MI_ERR_RELOAD_LEN (sizeof(MI_ERR_RELOAD)-1)
#define MI_NOT_SUPPORTED "DB mode not configured"
#define MI_NOT_SUPPORTED_LEN (sizeof(MI_NOT_SUPPORTED)-1)
static struct mi_root* ds_mi_reload(struct mi_root* cmd_tree, void* param)
{
if (ds_reload_db()<0)
return init_mi_tree(500, MI_ERR_RELOAD, MI_ERR_RELOAD_LEN);