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175 lines
4.8 KiB
175 lines
4.8 KiB
/**
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* $Id$
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*
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* dispatcher module
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*
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* Copyright (C) 2004-2006 FhG Fokus
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*
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* This file is part of Kamailio, a free SIP server.
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*
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* Kamailio is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version
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*
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* Kamailio is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* History
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* -------
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* 2004-07-31 first version, by daniel
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* 2007-01-11 Added a function to check if a specific gateway is in
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* a group (carsten)
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* 2007-02-09 Added active probing of failed destinations and automatic
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* re-enabling of destinations
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* 2007-05-08 Ported the changes to SVN-Trunk and renamed ds_is_domain
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* to ds_is_from_list.
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*/
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/*! \file
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* \ingroup dispatcher
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* \brief Dispatcher :: Dispatch
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*/
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#ifndef _DISPATCH_H_
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#define _DISPATCH_H_
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#include <stdio.h>
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#include "../../pvar.h"
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#include "../../parser/msg_parser.h"
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#include "../../modules/tm/tm_load.h"
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#define DS_HASH_USER_ONLY 1 /*!< use only the uri user part for hashing */
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#define DS_FAILOVER_ON 2 /*!< store the other dest in avps */
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#define DS_INACTIVE_DST 1 /*!< inactive destination */
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#define DS_TRYING_DST 2 /*!< temporary trying destination */
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#define DS_DISABLED_DST 4 /*!< admin disabled destination */
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#define DS_PROBING_DST 8 /*!< checking destination */
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#define DS_STATES_ALL 15 /*!< all bits for the states of destination */
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#define ds_skip_dst(flags) ((flags) & (DS_INACTIVE_DST|DS_DISABLED_DST))
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#define DS_PROBE_NONE 0
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#define DS_PROBE_ALL 1
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#define DS_PROBE_INACTIVE 2
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extern str ds_db_url;
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extern str ds_table_name;
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extern str ds_set_id_col;
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extern str ds_dest_uri_col;
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extern str ds_dest_flags_col;
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extern str ds_dest_priority_col;
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extern str ds_dest_attrs_col;
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extern int ds_flags;
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extern int ds_use_default;
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extern int_str dst_avp_name;
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extern unsigned short dst_avp_type;
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extern int_str grp_avp_name;
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extern unsigned short grp_avp_type;
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extern int_str cnt_avp_name;
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extern unsigned short cnt_avp_type;
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extern int_str dstid_avp_name;
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extern unsigned short dstid_avp_type;
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extern int_str attrs_avp_name;
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extern unsigned short attrs_avp_type;
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extern pv_elem_t * hash_param_model;
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extern str ds_setid_pvname;
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extern pv_spec_t ds_setid_pv;
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/* Structure containing pointers to TM-functions */
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extern struct tm_binds tmb;
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extern str ds_ping_method;
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extern str ds_ping_from;
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extern int probing_threshhold; /*!< number of failed requests,
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before a destination is taken into probing */
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extern int ds_probing_mode;
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extern str ds_outbound_proxy;
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int init_data(void);
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int init_ds_db(void);
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int ds_load_list(char *lfile);
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int ds_connect_db(void);
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void ds_disconnect_db(void);
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int ds_load_db(void);
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int ds_destroy_list(void);
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int ds_select_dst(struct sip_msg *msg, int set, int alg, int mode);
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int ds_next_dst(struct sip_msg *msg, int mode);
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int ds_update_state(sip_msg_t *msg, int group, str *address, int state);
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int ds_reinit_state(int group, str *address, int state);
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int ds_mark_dst(struct sip_msg *msg, int mode);
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int ds_print_list(FILE *fout);
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int ds_print_mi_list(struct mi_node* rpl);
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int ds_print_sets(void);
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int ds_load_unset(struct sip_msg *msg);
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int ds_load_update(struct sip_msg *msg);
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int ds_hash_load_init(unsigned int htsize, int expire, int initexpire);
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int ds_hash_load_destroy(void);
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int ds_is_from_list(struct sip_msg *_m, int group);
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/*! \brief
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* Timer for checking inactive destinations
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*/
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void ds_check_timer(unsigned int ticks, void* param);
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/*! \brief
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* Timer for checking active calls load
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*/
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void ds_ht_timer(unsigned int ticks, void *param);
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/*! \brief
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* Check if the reply-code is valid:
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*/
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int ds_ping_check_rplcode(int);
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typedef struct _ds_attrs
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{
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str body;
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str duid;
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int maxload;
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int weight;
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} ds_attrs_t;
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typedef struct _ds_dest
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{
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str uri;
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int flags;
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int priority;
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int dload;
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ds_attrs_t attrs;
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struct ip_addr ip_address; /*!< IP-Address of the entry */
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unsigned short int port; /*!< Port of the request URI */
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int failure_count;
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struct _ds_dest *next;
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} ds_dest_t;
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typedef struct _ds_set
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{
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int id; /*!< id of dst set */
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int nr; /*!< number of items in dst set */
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int last; /*!< last used item in dst set (round robin) */
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int wlast; /*!< last used item in dst set (by weight) */
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ds_dest_t *dlist;
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unsigned int wlist[100];
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struct _ds_set *next;
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} ds_set_t;
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ds_set_t *ds_get_list(void);
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int ds_get_list_nr(void);
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#endif
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