/*
* ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2009 by Alexander Barton (alex@barton.de)
+ * Copyright (c)2001-2011 Alexander Barton (alex@barton.de) and Contributors.
*
* This program 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.
* Please read the file COPYING, README and AUTHORS for more information.
- *
- * Asynchronous resolver
*/
+#define RESOLVER_TIMEOUT (Conf_PongTimeout*3)/4
#include "portab.h"
+/**
+ * @file
+ * Asynchronous resolver
+ */
+
#include "imp.h"
#include <assert.h>
#include <errno.h>
#include "array.h"
#include "conn.h"
+#include "conf.h"
#include "defines.h"
#include "log.h"
#include "ng_ipaddr.h"
assert(s != NULL);
- pid = Proc_Fork(s, pipefd, cbfunc);
+ pid = Proc_Fork(s, pipefd, cbfunc, RESOLVER_TIMEOUT);
if (pid > 0) {
LogDebug("Resolver for %s created (PID %d).", ng_ipaddr_tostr(Addr), pid);
return true;
} else if( pid == 0 ) {
/* Sub process */
Log_Init_Subprocess("Resolver");
- Do_ResolveAddr( Addr, identsock, pipefd[1]);
+ Conn_CloseAllSockets(identsock);
+ Do_ResolveAddr(Addr, identsock, pipefd[1]);
Log_Exit_Subprocess("Resolver");
exit(0);
}
assert(s != NULL);
- pid = Proc_Fork(s, pipefd, cbfunc);
+ pid = Proc_Fork(s, pipefd, cbfunc, RESOLVER_TIMEOUT);
if (pid > 0) {
/* Main process */
#ifdef DEBUG
} else if( pid == 0 ) {
/* Sub process */
Log_Init_Subprocess("Resolver");
+ Conn_CloseAllSockets(NONE);
Do_ResolveName(Host, pipefd[1]);
Log_Exit_Subprocess("Resolver");
exit(0);
* @return true if lookup successful, false if domain name not found
*/
static bool
-ForwardLookup(const char *hostname, array *IpAddr)
+ForwardLookup(const char *hostname, array *IpAddr, int af)
{
ng_ipaddr_t addr;
struct addrinfo *a, *ai_results;
static struct addrinfo hints;
-#ifndef WANT_IPV6
- hints.ai_family = AF_INET;
-#endif
#ifdef AI_ADDRCONFIG /* glibc has this, but not e.g. netbsd 4.0 */
hints.ai_flags = AI_ADDRCONFIG;
#endif
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
+ hints.ai_family = af;
-#ifdef WANT_IPV6
- assert(Conf_ConnectIPv6 || Conf_ConnectIPv4);
-
- if (!Conf_ConnectIPv6)
- hints.ai_family = AF_INET;
- if (!Conf_ConnectIPv4)
- hints.ai_family = AF_INET6;
-#endif
memset(&addr, 0, sizeof(addr));
res = getaddrinfo(hostname, NULL, &hints, &ai_results);
static void
Log_Forgery_NoIP(const char *ip, const char *host)
{
- Log_Subprocess(LOG_WARNING, "Possible forgery: %s resolved to %s "
- "(which has no ip address)", ip, host);
+ Log_Subprocess(LOG_WARNING,
+ "Possible forgery: %s resolved to %s (which has no ip address)", ip, host);
}
static void
Log_Forgery_WrongIP(const char *ip, const char *host)
{
- Log_Subprocess(LOG_WARNING,"Possible forgery: %s resolved to %s "
- "(which points to different address)", ip, host);
+ Log_Subprocess(LOG_WARNING,
+ "Possible forgery: %s resolved to %s (which points to different address)", ip, host);
}
if (!ReverseLookup(Addr, hostname, sizeof(hostname)))
goto dns_done;
- if (ForwardLookup(hostname, &resolved_addr)) {
+ if (ForwardLookup(hostname, &resolved_addr, ng_ipaddr_af(Addr))) {
if (!Addr_in_list(&resolved_addr, Addr)) {
Log_Forgery_WrongIP(tmp_ip_str, hostname);
strlcpy(hostname, tmp_ip_str, sizeof(hostname));
/* Resolver sub-process: resolve name and write result into pipe
* to parent. */
array IpAddrs;
+ int af;
#ifdef DEBUG
ng_ipaddr_t *addr;
size_t len;
Log_Subprocess(LOG_DEBUG, "Now resolving \"%s\" ...", Host);
array_init(&IpAddrs);
- /* Resolve hostname */
- if (!ForwardLookup(Host, &IpAddrs)) {
+
+#ifdef WANT_IPV6
+ af = AF_UNSPEC;
+ assert(Conf_ConnectIPv6 || Conf_ConnectIPv4);
+
+ if (!Conf_ConnectIPv6)
+ af = AF_INET;
+ if (!Conf_ConnectIPv4)
+ af = AF_INET6;
+#else
+ af = AF_INET;
+#endif
+ if (!ForwardLookup(Host, &IpAddrs, af)) {
close(w_fd);
return;
}