Put back connecting to servers defined by hostname.

The DNS lookup is done at connect time.
This commit is contained in:
Jilles Tjoelker 2008-04-05 22:09:32 +02:00
parent 17050f2433
commit abe5dd209d
3 changed files with 149 additions and 77 deletions

View file

@ -265,6 +265,8 @@ struct LocalUser
struct ZipStats zipstats;
struct DNSQuery *dnsquery; /* for outgoing server's name lookup */
time_t last_away; /* Away since... */
time_t last;

View file

@ -1402,6 +1402,11 @@ exit_unknown_client(struct Client *client_p, struct Client *source_p, struct Cli
const char *comment)
{
delete_auth_queries(source_p);
if (source_p->localClient->dnsquery)
{
delete_resolver_queries(source_p->localClient->dnsquery);
rb_free(source_p->localClient->dnsquery);
}
del_unknown_ip(source_p);
rb_dlinkDelete(&source_p->localClient->tnode, &unknown_list);

View file

@ -1443,6 +1443,125 @@ fork_server(struct Client *server)
* -- adrian
*/
static int
serv_connect_resolved(struct Client *client_p)
{
struct rb_sockaddr_storage myipnum;
char vhoststr[HOSTIPLEN];
struct server_conf *server_p;
uint16_t port;
if((server_p = client_p->localClient->att_sconf) == NULL)
{
sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Lost connect{} block for %s",
get_server_name(client_p, HIDE_IP));
exit_client(client_p, client_p, &me, "Lost connect{} block");
return 0;
}
#ifdef RB_IPV6
if(client_p->localClient->ip.ss_family == AF_INET6)
port = ntohs(((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port);
else
#endif
port = ntohs(((struct sockaddr_in *)&client_p->localClient->ip)->sin_port);
if(ServerConfVhosted(server_p))
{
memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum));
((struct sockaddr_in *)&myipnum)->sin_port = 0;
myipnum.ss_family = server_p->aftype;
}
else if(server_p->aftype == AF_INET && ServerInfo.specific_ipv4_vhost)
{
memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum));
((struct sockaddr_in *)&myipnum)->sin_port = 0;
myipnum.ss_family = AF_INET;
SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in));
}
#ifdef RB_IPV6
else if((server_p->aftype == AF_INET6) && ServerInfo.specific_ipv6_vhost)
{
memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum));
((struct sockaddr_in6 *)&myipnum)->sin6_port = 0;
myipnum.ss_family = AF_INET6;
SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6));
}
#endif
else
{
/* log */
ilog(L_SERVER, "Connecting to %s[%s] port %d (%s)", client_p->name, client_p->sockhost, port,
#ifdef RB_IPV6
server_p->aftype == AF_INET6 ? "IPv6" :
#endif
(server_p->aftype == AF_INET ? "IPv4" : "?"));
rb_connect_tcp(client_p->localClient->F,
(struct sockaddr *) &client_p->localClient->ip,
NULL, 0,
serv_connect_callback, client_p,
ConfigFileEntry.connect_timeout);
return 1;
}
/* log */
inetntop_sock((struct sockaddr *)&myipnum, vhoststr, sizeof vhoststr);
ilog(L_SERVER, "Connecting to %s[%s] port %d (%s) (vhost %s)", client_p->name, client_p->sockhost, port,
#ifdef RB_IPV6
server_p->aftype == AF_INET6 ? "IPv6" :
#endif
(server_p->aftype == AF_INET ? "IPv4" : "?"), vhoststr);
rb_connect_tcp(client_p->localClient->F,
(struct sockaddr *) &client_p->localClient->ip,
(struct sockaddr *) &myipnum, GET_SS_LEN(&myipnum),
serv_connect_callback, client_p,
ConfigFileEntry.connect_timeout);
return 1;
}
static void
serv_connect_dns_callback(void *vptr, struct DNSReply *reply)
{
struct Client *client_p = vptr;
uint16_t port;
rb_free(client_p->localClient->dnsquery);
client_p->localClient->dnsquery = NULL;
if (reply == NULL)
{
sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL, "Cannot resolve hostname for %s",
get_server_name(client_p, HIDE_IP));
ilog(L_SERVER, "Cannot resolve hostname for %s",
log_client_name(client_p, HIDE_IP));
exit_client(client_p, client_p, &me, "Cannot resolve hostname");
return;
}
#ifdef RB_IPV6
if(reply->addr.ss_family == AF_INET6)
port = ((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port;
else
#endif
port = ((struct sockaddr_in *)&client_p->localClient->ip)->sin_port;
memcpy(&client_p->localClient->ip, &reply->addr, sizeof(client_p->localClient->ip));
#ifdef RB_IPV6
if(reply->addr.ss_family == AF_INET6)
((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = port;
else
#endif
((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = port;
/* Set sockhost properly now -- jilles */
inetntop_sock((struct sockaddr *)&client_p->localClient->ip,
client_p->sockhost, sizeof client_p->sockhost);
serv_connect_resolved(client_p);
}
/*
* serv_connect() - initiate a server connection
*
@ -1464,9 +1583,8 @@ int
serv_connect(struct server_conf *server_p, struct Client *by)
{
struct Client *client_p;
struct rb_sockaddr_storage myipnum, theiripnum;
struct rb_sockaddr_storage theiripnum;
rb_fde_t *F;
char vhoststr[HOSTIPLEN];
char note[HOSTLEN + 10];
s_assert(server_p != NULL);
@ -1487,24 +1605,6 @@ serv_connect(struct server_conf *server_p, struct Client *by)
return 0;
}
if (rb_inet_pton_sock(server_p->host, (struct sockaddr *)&theiripnum) <= 0)
{
sendto_realops_snomask(SNO_GENERAL, L_ALL,
"Server %s host is a DNS name which is currently not implemented",
server_p->name);
if(by && IsPerson(by) && !MyClient(by))
sendto_one_notice(by, ":Server %s host is a DNS name which is currently not implemented",
server_p->name);
return 0;
}
#ifdef RB_IPV6
if(theiripnum.ss_family == AF_INET6)
((struct sockaddr_in6 *)&theiripnum)->sin6_port = htons(server_p->port);
else
#endif
((struct sockaddr_in *)&theiripnum)->sin_port = htons(server_p->port);
/* create a socket for the server connection */
if((F = rb_socket(server_p->aftype, SOCK_STREAM, 0, NULL)) == NULL)
{
@ -1525,7 +1625,6 @@ serv_connect(struct server_conf *server_p, struct Client *by)
strlcpy(client_p->name, server_p->name, sizeof(client_p->name));
strlcpy(client_p->host, server_p->host, sizeof(client_p->host));
strlcpy(client_p->sockhost, server_p->host, sizeof(client_p->sockhost));
memcpy(&client_p->localClient->ip, &theiripnum, sizeof(client_p->localClient->ip));
client_p->localClient->F = F;
/*
@ -1571,63 +1670,37 @@ serv_connect(struct server_conf *server_p, struct Client *by)
SetConnecting(client_p);
rb_dlinkAddTail(client_p, &client_p->node, &global_client_list);
if(ServerConfVhosted(server_p))
if (rb_inet_pton_sock(server_p->host, (struct sockaddr *)&theiripnum) > 0)
{
memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum));
((struct sockaddr_in *)&myipnum)->sin_port = 0;
myipnum.ss_family = server_p->aftype;
}
else if(server_p->aftype == AF_INET && ServerInfo.specific_ipv4_vhost)
{
memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum));
((struct sockaddr_in *)&myipnum)->sin_port = 0;
myipnum.ss_family = AF_INET;
SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in));
}
memcpy(&client_p->localClient->ip, &theiripnum, sizeof(client_p->localClient->ip));
#ifdef RB_IPV6
else if((server_p->aftype == AF_INET6) && ServerInfo.specific_ipv6_vhost)
{
memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum));
((struct sockaddr_in6 *)&myipnum)->sin6_port = 0;
myipnum.ss_family = AF_INET6;
SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6));
}
if(theiripnum.ss_family == AF_INET6)
((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port);
else
#endif
((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port);
return serv_connect_resolved(client_p);
}
else
{
/* log */
ilog(L_SERVER, "Connecting to %s[%s] port %d (%s)", server_p->name, server_p->host, server_p->port,
#ifdef RB_IPV6
server_p->aftype == AF_INET6 ? "IPv6" :
if(theiripnum.ss_family == AF_INET6)
((struct sockaddr_in6 *)&client_p->localClient->ip)->sin6_port = htons(server_p->port);
else
#endif
(server_p->aftype == AF_INET ? "IPv4" : "?"));
((struct sockaddr_in *)&client_p->localClient->ip)->sin_port = htons(server_p->port);
rb_connect_tcp(client_p->localClient->F,
(struct sockaddr *) &theiripnum,
NULL, 0,
serv_connect_callback, client_p,
ConfigFileEntry.connect_timeout);
return 1;
client_p->localClient->dnsquery = rb_malloc(sizeof(struct DNSQuery));
client_p->localClient->dnsquery->ptr = client_p;
client_p->localClient->dnsquery->callback = serv_connect_dns_callback;
gethost_byname_type(server_p->host, client_p->localClient->dnsquery,
#ifdef RB_IPV6
server_p->aftype == AF_INET6 ? T_AAAA :
#endif
T_A);
return 1;
}
/* log */
inetntop_sock((struct sockaddr *)&myipnum, vhoststr, sizeof vhoststr);
ilog(L_SERVER, "Connecting to %s[%s] port %d (%s) (vhost %s)", server_p->name, server_p->host, server_p->port,
#ifdef RB_IPV6
server_p->aftype == AF_INET6 ? "IPv6" :
#endif
(server_p->aftype == AF_INET ? "IPv4" : "?"), vhoststr);
rb_connect_tcp(client_p->localClient->F,
(struct sockaddr *) &theiripnum,
(struct sockaddr *) &myipnum, GET_SS_LEN(&myipnum),
serv_connect_callback, client_p,
ConfigFileEntry.connect_timeout);
return 1;
}
/*
@ -1662,14 +1735,6 @@ serv_connect_callback(rb_fde_t *F, int status, void *data)
return;
}
#if 0
/* Next, for backward purposes, record the ip of the server */
memcpy(&client_p->localClient->ip, &F->connect.hostaddr, sizeof client_p->localClient->ip);
/* Set sockhost properly now -- jilles */
inetntop_sock((struct sockaddr *)&F->connect.hostaddr,
client_p->sockhost, sizeof client_p->sockhost);
#endif
/* Check the status */
if(status != RB_OK)
{