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cfg_core.c
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/*
* $Id$
*
* Copyright (C) 2007 iptelorg GmbH
*
* This file is part of ser, a free SIP server.
*
* ser 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
*
* For a license to use the ser software under conditions
* other than those described here, or to purchase support for this
* software, please contact iptel.org by e-mail at the following addresses:
* info@iptel.org
*
* ser 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
* -------
* 2007-12-03 Initial version (Miklos)
* 2008-01-31 added DNS resolver parameters (Miklos)
*/
#include "dprint.h"
#ifdef USE_DST_BLACKLIST
#include "dst_blacklist.h"
#endif
#include "resolve.h"
#ifdef USE_DNS_CACHE
#include "dns_cache.h"
#endif
#include "cfg/cfg.h"
#include "cfg_core.h"
struct cfg_group_core default_core_cfg = {
L_DEFAULT, /* print only msg. < L_WARN */
#ifdef USE_DST_BLACKLIST
/* blacklist */
0, /* dst blacklist is disabled by default */
DEFAULT_BLST_TIMEOUT,
DEFAULT_BLST_MAX_MEM,
#endif
/* resolver */
#ifdef USE_IPV6
1, /* dns_try_ipv6 -- on by default */
#else
0, /* dns_try_ipv6 -- off, if no ipv6 support */
#endif
0, /* dns_try_naptr -- off by default */
3, /* udp transport preference (for naptr) */
2, /* tcp transport preference (for naptr) */
1, /* tls transport preference (for naptr) */
-1, /* dns_retr_time */
-1, /* dns_retr_no */
-1, /* dns_servers_no */
1, /* dns_search_list */
1, /* dns_search_fmatch */
0, /* dns_reinit */
/* DNS cache */
#ifdef USE_DNS_CACHE
0, /* dns_cache_flags */
0, /* use_dns_failover -- off by default */
0, /* dns_srv_lb -- off by default */
DEFAULT_DNS_NEG_CACHE_TTL, /* neg. cache ttl */
DEFAULT_DNS_CACHE_MIN_TTL, /* minimum ttl */
DEFAULT_DNS_CACHE_MAX_TTL, /* maximum ttl */
DEFAULT_DNS_MAX_MEM, /* dns_cache_max_mem */
0, /* dns_cache_del_nonexp -- delete only expired entries by default */
#endif
};
void *core_cfg = &default_core_cfg;
cfg_def_t core_cfg_def[] = {
{"debug", CFG_VAR_INT, 0, 0, 0, 0, "debug level"},
#ifdef USE_DST_BLACKLIST
/* blacklist */
{"use_dst_blacklist", CFG_VAR_INT, 0, 0, 0, 0,
"enable/disable destination blacklisting"},
{"dst_blacklist_expire", CFG_VAR_INT, 0, 0, 0, 0,
"how much time (in s) a blacklisted destination is kept in the list"},
{"dst_blacklist_mem", CFG_VAR_INT, 0, 0, blst_max_mem_fixup, 0,
"maximum shared memory amount (in KB) used for keeping the blacklisted destinations"},
#endif
/* resolver */
#ifdef USE_DNS_CACHE
{"dns_try_ipv6", CFG_VAR_INT, 0, 1, dns_try_ipv6_fixup, fix_dns_flags,
#else
{"dns_try_ipv6", CFG_VAR_INT, 0, 1, dns_try_ipv6_fixup, 0,
#endif
"enable/disable IPv6 DNS lookups"},
#ifdef USE_DNS_CACHE
{"dns_try_naptr", CFG_VAR_INT, 0, 1, 0, fix_dns_flags,
#else
{"dns_try_naptr", CFG_VAR_INT, 0, 1, 0, 0,
#endif
"enable/disable NAPTR DNS lookups"},
{"dns_udp_pref", CFG_VAR_INT, 0, 0, 0, reinit_naptr_proto_prefs,
"udp protocol preference when doing NAPTR lookups"},
{"dns_tcp_pref", CFG_VAR_INT, 0, 0, 0, reinit_naptr_proto_prefs,
"tcp protocol preference when doing NAPTR lookups"},
{"dns_tls_pref", CFG_VAR_INT, 0, 0, 0, reinit_naptr_proto_prefs,
"tls protocol preference when doing NAPTR lookups"},
{"dns_retr_time", CFG_VAR_INT, 0, 0, 0, resolv_reinit,
"time in s before retrying a dns request"},
{"dns_retr_no", CFG_VAR_INT, 0, 0, 0, resolv_reinit,
"number of dns retransmissions before giving up"},
{"dns_servers_no", CFG_VAR_INT, 0, 0, 0, resolv_reinit,
"how many dns servers from the ones defined in "
"/etc/resolv.conf will be used"},
{"dns_use_search_list", CFG_VAR_INT, 0, 1, 0, resolv_reinit,
"if set to 0, the search list in /etc/resolv.conf is ignored"},
{"dns_search_full_match", CFG_VAR_INT, 0, 1, 0, 0,
"enable/disable domain name checks against the search list "
"in DNS answers"},
{"dns_reinit", CFG_VAR_INT|CFG_INPUT_INT, 1, 1, dns_reinit_fixup, resolv_reinit,
"set to 1 in order to reinitialize the DNS resolver"},
/* DNS cache */
#ifdef USE_DNS_CACHE
{"dns_cache_flags", CFG_VAR_INT, 0, 4, 0, fix_dns_flags,
"dns cache specific resolver flags "
"(1=ipv4 only, 2=ipv6 only, 4=prefer ipv6"},
{"use_dns_failover", CFG_VAR_INT, 0, 1, use_dns_failover_fixup, 0,
"enable/disable dns failover in case the destination "
"resolves to multiple ip addresses and/or multiple SRV records "
"(depends on use_dns_cache)"},
{"dns_srv_lb", CFG_VAR_INT, 0, 1, 0, fix_dns_flags,
"enable/disable load balancing to different srv records "
"of the same priority based on the srv records weights "
"(depends on dns_failover)"},
{"dns_cache_negative_ttl", CFG_VAR_INT, 0, 0, 0, 0,
"time to live for negative results (\"not found\") "
"in seconds. Use 0 to disable"},
{"dns_cache_min_ttl", CFG_VAR_INT, 0, 0, 0, 0,
"minimum accepted time to live for a record, in seconds"},
{"dns_cache_max_ttl", CFG_VAR_INT, 0, 0, 0, 0,
"maximum accepted time to live for a record, in seconds"},
{"dns_cache_mem", CFG_VAR_INT, 0, 0, dns_cache_max_mem_fixup, 0,
"maximum memory used for the dns cache in Kb"},
{"dns_cache_del_nonexp", CFG_VAR_INT, 0, 1, 0, 0,
"allow deletion of non-expired records from the cache when "
"there is no more space left for new ones"},
#endif
{0, 0, 0, 0, 0, 0}
};