forked from enlightenment/efl
as I promised long, long ago, ecore now has its own asynchronous dns resolver! everyone cheer for not needing c-ares any longer!
dns.c is the work of William Ahern (http://25thandclement.com/~william/projects/dns.c.html) and has been in development for ~4 years. it has zero documentation, no examples, and no comments: I'm pretty sure he's an EFL developer in disguise. this new resolver is roughly 10-12% faster than c-ares, will never randomly break, requires no external libraries, and is much simpler on the efl side. by default, dns.c resolution is enabled any time ipv6 support is detected and c-ares support is not requested; it should work on all platforms (wink wink vtorri), but it has no way of disabling ipv6 (someone can go through dns.c/h and do that if they feel so inclined) SVN revision: 71690
This commit is contained in:
parent
dec06820ec
commit
161ac501e5
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@ -706,3 +706,5 @@
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2012-06-04 Mike Blumenkrantz
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* ECORE_{CON,IPC}_NO_PROXY now available for disabling proxying on certain connections
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* Added new resolver method: dns.c -- This is used by default now when ipv6 is enabled
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and c-ares support is disabled.
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@ -12,6 +12,7 @@ Additions:
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- ECORE_X_RANDR_OUTPUT_POLICY_ASK
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* ecore_con:
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- ECORE_{CON,IPC}_NO_PROXY now available for disabling proxying on certain connections
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- New dns.c resolver backend for faster dns lookups
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Fixes:
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* ecore
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@ -1488,6 +1488,7 @@ if test "x${have_ecore_con}" = "xyes" ; then
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if test "x${have_ipv6}" = "xyes" ; then
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AC_DEFINE(HAVE_IPV6, 1, [Define if IPV6 is supported])
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fi
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AM_CONDITIONAL([HAVE_IPV6], [test "x${have_ipv6}" = "xyes"])
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ECORE_CHECK_CURL([${want_curl}],
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[
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@ -2067,7 +2068,13 @@ fi
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if test "x$want_ecore_con_local_sockets" = "xyes" ; then
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echo " Abstract Sockets.........: $want_ecore_con_abstract_sockets"
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fi
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echo " c-ares.....................: $have_cares"
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if test "x$have_cares" = "xyes" ; then
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echo " Resolver...................: c-ares"
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elif test "x$have_ipv6" = "xyes" ; then
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echo " Resolver...................: dns.c"
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else
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echo " Resolver...................: fork"
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fi
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fi
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echo " Ecore_Ipc....................: $have_ecore_ipc"
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if test "x$have_ecore_ipc" = "xyes" ; then
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@ -34,8 +34,13 @@ endif
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if HAVE_CARES
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libecore_con_la_SOURCES += ecore_con_ares.c
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else
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if HAVE_IPV6
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AM_CPPFLAGS += -Wno-override-init
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libecore_con_la_SOURCES += ecore_con_dns.c dns.c dns.h
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else
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libecore_con_la_SOURCES += ecore_con_info.c
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endif
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endif
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libecore_con_la_CFLAGS = @WIN32_CFLAGS@
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libecore_con_la_LIBADD = \
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File diff suppressed because it is too large
Load Diff
File diff suppressed because it is too large
Load Diff
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@ -0,0 +1,334 @@
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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/*
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* This version of ecore_con_info uses dns.c to provide asynchronous dns lookup.
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*
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* dns.c is written by William Ahern:
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* http://25thandclement.com/~william/projects/dns.c.html
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*/
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#include <string.h>
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#include <sys/types.h>
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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# include <arpa/inet.h>
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#endif
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#include "dns.h"
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#include "Ecore.h"
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#include "Ecore_Con.h"
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#include "ecore_con_private.h"
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typedef struct dns_addrinfo dns_addrinfo;
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typedef struct dns_resolv_conf dns_resolv_conf;
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typedef struct dns_resolver dns_resolver;
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typedef struct dns_hosts dns_hosts;
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typedef struct _Ecore_Con_DNS Ecore_Con_DNS;
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struct _Ecore_Con_DNS
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{
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Ecore_Con_Server *svr;
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Ecore_Con_Info_Cb done_cb;
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void *data;
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dns_addrinfo *ai;
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dns_resolver *resolv;
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struct addrinfo hints;
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Ecore_Fd_Handler *fdh;
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Ecore_Timer *timer;
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};
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static int _ecore_con_dns_init = 0;
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static dns_resolv_conf *resconf = NULL;
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static dns_hosts *hosts = NULL;
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static void
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_ecore_con_dns_free(Ecore_Con_DNS *dns)
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{
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if (dns->svr->infos) dns->svr->infos = eina_list_remove(dns->svr->infos, dns);
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if (dns->timer) ecore_timer_del(dns->timer);
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if (dns->fdh) ecore_main_fd_handler_del(dns->fdh);
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dns_res_close(dns->resolv);
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free(dns);
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}
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static Eina_Bool
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_dns_addrinfo_get(Ecore_Con_DNS *dns, const char *addr, int port)
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{
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int error = 0;
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char service[NI_MAXSERV];
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snprintf(service, sizeof(service), "%d", port);
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dns->ai = dns_ai_open(addr, service, DNS_T_A, (const struct addrinfo *)&dns->hints, dns->resolv, &error);
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return error;
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}
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static int
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_ecore_con_dns_check(Ecore_Con_DNS *dns)
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{
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struct addrinfo *ent = NULL;
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int error = 0;
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char addr[NI_MAXHOST + 1];
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error = dns_ai_nextent(&ent, dns->ai);
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switch (error)
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{
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case 0:
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break;
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case EAGAIN:
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return 1;
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default:
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ERR("resolve failed: %s", dns_strerror(error));
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goto error;
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}
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{
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Ecore_Con_Info result;
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#if 0
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char pretty[512];
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dns_ai_print(pretty, sizeof(pretty), ent, dns->ai);
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printf("%s\n", pretty);
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#endif
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dns_inet_ntop(dns_sa_family(ent->ai_addr), dns_sa_addr(dns_sa_family(ent->ai_addr), ent->ai_addr), addr, sizeof(addr));
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result.size = 0;
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strncpy(result.ip, addr, sizeof(result.ip));
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snprintf(result.service, sizeof(result.service), "%u", ntohs(*dns_sa_port(dns_sa_family(ent->ai_addr), ent->ai_addr)));
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memcpy(&result.info, ent, sizeof(result.info));
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if (dns->fdh) ecore_main_fd_handler_del(dns->fdh);
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dns->fdh = NULL;
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dns->done_cb(dns->data, &result);
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free(ent);
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_ecore_con_dns_free(dns);
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}
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return 0;
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error:
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dns->done_cb(dns->data, NULL);
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_ecore_con_dns_free(dns);
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return -1;
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}
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static Eina_Bool
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_dns_fd_cb(Ecore_Con_DNS *dns, Ecore_Fd_Handler *fdh)
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{
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if (_ecore_con_dns_check(dns) == 1)
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ecore_main_fd_handler_active_set(fdh, dns_ai_events(dns->ai));
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return ECORE_CALLBACK_RENEW;
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}
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static Eina_Bool
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_dns_timer_cb(Ecore_Con_DNS *dns)
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{
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dns->done_cb(dns->data, NULL);
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_ecore_con_dns_free(dns);
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dns->timer = NULL;
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return EINA_FALSE;
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}
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int
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ecore_con_info_init(void)
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{
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int err;
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if (_ecore_con_dns_init) return ++_ecore_con_dns_init;
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resconf = dns_resconf_local(&err);
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if (!resconf)
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{
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ERR("resconf_open: %s", dns_strerror(err));
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return 0;
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}
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hosts = dns_hosts_local(&err);
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if (!hosts)
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{
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ERR("hosts_open: %s", dns_strerror(err));
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dns_resconf_close(resconf);
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resconf = NULL;
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return 0;
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}
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dns_hosts_acquire(hosts);
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dns_resconf_acquire(resconf);
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/* this is super slow don't do it */
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//resconf->options.recurse = 1;
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return ++_ecore_con_dns_init;
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}
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int
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ecore_con_info_shutdown(void)
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{
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if (!_ecore_con_dns_init) return 0;
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if (--_ecore_con_dns_init) return _ecore_con_dns_init;
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dns_resconf_close(dns_resconf_mortal(resconf));
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resconf = NULL;
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dns_hosts_close(dns_hosts_mortal(hosts));
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hosts = NULL;
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return 0;
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}
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void
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ecore_con_info_data_clear(void *info)
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{
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Ecore_Con_DNS *dns = info;
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if (dns) dns->data = NULL;
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}
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int
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ecore_con_info_tcp_connect(Ecore_Con_Server *svr,
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Ecore_Con_Info_Cb done_cb,
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void *data)
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{
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struct addrinfo hints;
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memset(&hints, 0, sizeof(struct addrinfo));
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#ifdef HAVE_IPV6
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hints.ai_family = AF_INET6;
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#else
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hints.ai_family = AF_INET;
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#endif
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_flags = AI_CANONNAME;
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hints.ai_protocol = IPPROTO_TCP;
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return ecore_con_info_get(svr, done_cb, data, &hints);
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}
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int
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ecore_con_info_tcp_listen(Ecore_Con_Server *svr,
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Ecore_Con_Info_Cb done_cb,
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void *data)
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{
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struct addrinfo hints;
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memset(&hints, 0, sizeof(struct addrinfo));
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#ifdef HAVE_IPV6
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hints.ai_family = AF_INET6;
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#else
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hints.ai_family = AF_INET;
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#endif
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hints.ai_socktype = SOCK_STREAM;
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hints.ai_flags = AI_PASSIVE;
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hints.ai_protocol = IPPROTO_TCP;
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return ecore_con_info_get(svr, done_cb, data, &hints);
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}
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int
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ecore_con_info_udp_connect(Ecore_Con_Server *svr,
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Ecore_Con_Info_Cb done_cb,
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void *data)
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{
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struct addrinfo hints;
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memset(&hints, 0, sizeof(struct addrinfo));
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#ifdef HAVE_IPV6
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hints.ai_family = AF_INET6;
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#else
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hints.ai_family = AF_INET;
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#endif
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hints.ai_socktype = SOCK_DGRAM;
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hints.ai_flags = AI_CANONNAME;
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hints.ai_protocol = IPPROTO_UDP;
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return ecore_con_info_get(svr, done_cb, data, &hints);
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}
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int
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ecore_con_info_udp_listen(Ecore_Con_Server *svr,
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Ecore_Con_Info_Cb done_cb,
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void *data)
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{
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struct addrinfo hints;
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memset(&hints, 0, sizeof(struct addrinfo));
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#ifdef HAVE_IPV6
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hints.ai_family = AF_INET6;
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#else
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hints.ai_family = AF_INET;
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#endif
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hints.ai_socktype = SOCK_DGRAM;
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hints.ai_flags = AI_PASSIVE;
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hints.ai_protocol = IPPROTO_UDP;
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return ecore_con_info_get(svr, done_cb, data, &hints);
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}
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int
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ecore_con_info_mcast_listen(Ecore_Con_Server *svr,
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Ecore_Con_Info_Cb done_cb,
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void *data)
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{
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struct addrinfo hints;
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memset(&hints, 0, sizeof(struct addrinfo));
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#ifdef HAVE_IPV6
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hints.ai_family = AF_INET6;
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#else
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hints.ai_family = AF_INET;
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#endif
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hints.ai_socktype = SOCK_DGRAM;
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hints.ai_protocol = IPPROTO_UDP;
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return ecore_con_info_get(svr, done_cb, data, &hints);
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}
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EAPI int
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ecore_con_info_get(Ecore_Con_Server *svr,
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Ecore_Con_Info_Cb done_cb,
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void *data,
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struct addrinfo *hints)
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{
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Ecore_Con_DNS *dns;
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int error = 0;
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dns = calloc(1, sizeof(Ecore_Con_DNS));
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if (!dns) return 0;
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dns->svr = svr;
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dns->done_cb = done_cb;
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dns->data = data;
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if (hints)
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memcpy(&dns->hints, hints, sizeof(struct addrinfo));
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if (!(dns->resolv = dns_res_open(resconf, hosts, dns_hints_mortal(dns_hints_local(resconf, &error)), NULL, dns_opts(), &error)))
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{
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ERR("res_open: %s", dns_strerror(error));
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goto reserr;
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}
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error = _dns_addrinfo_get(dns, svr->ecs ? svr->ecs->ip : svr->name, dns->svr->ecs ? dns->svr->ecs->port : dns->svr->port);
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if (error && (error != EAGAIN))
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{
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ERR("resolver: %s", dns_strerror(error));
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goto seterr;
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}
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switch (_ecore_con_dns_check(dns))
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{
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case 0:
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break;
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case 1:
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dns->fdh = ecore_main_fd_handler_add(dns_ai_pollfd(dns->ai), dns_ai_events(dns->ai), (Ecore_Fd_Cb)_dns_fd_cb, dns, NULL, NULL);
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svr->infos = eina_list_append(svr->infos, dns);
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dns->timer = ecore_timer_add(5.0, (Ecore_Task_Cb)_dns_timer_cb, dns);
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break;
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default:
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return 0;
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}
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return 1;
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seterr:
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if (dns->resolv) dns_res_close(dns->resolv);
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reserr:
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free(dns);
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return 0;
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}
|
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|
Loading…
Reference in New Issue