]> jfr.im git - solanum.git/blobdiff - ircd/s_serv.c
whowas.c: store account name in whowas (#323)
[solanum.git] / ircd / s_serv.c
index 619ab51f1740bc9702b6442a2fba857537ac7fcb..98caf93a6556a57321649ef2bfdb6163820800d2 100644 (file)
 #include "capability.h"
 #include "s_assert.h"
 
-#ifndef INADDR_NONE
-#define INADDR_NONE ((unsigned int) 0xffffffff)
-#endif
-
 int MaxConnectionCount = 1;
 int MaxClientCount = 1;
 int refresh_user_links = 0;
@@ -77,7 +73,6 @@ unsigned int CAP_EX;
 unsigned int CAP_CHW;
 unsigned int CAP_IE;
 unsigned int CAP_KLN;
-unsigned int CAP_ZIP;
 unsigned int CAP_KNOCK;
 unsigned int CAP_TB;
 unsigned int CAP_UNKLN;
@@ -107,6 +102,7 @@ unsigned int CLICAP_ECHO_MESSAGE;
 void
 init_builtin_capabs(void)
 {
+       static struct ClientCapability high_priority = {.flags = CLICAP_FLAGS_PRIORITY};
        serv_capindex = capability_index_create("server capabilities");
 
        /* These two are not set via CAPAB/GCAP keywords. */
@@ -119,7 +115,6 @@ init_builtin_capabs(void)
        CAP_IE = capability_put(serv_capindex, "IE", NULL);
        CAP_KLN = capability_put(serv_capindex, "KLN", NULL);
        CAP_KNOCK = capability_put(serv_capindex, "KNOCK", NULL);
-       CAP_ZIP = capability_put(serv_capindex, "ZIP", NULL);
        CAP_TB = capability_put(serv_capindex, "TB", NULL);
        CAP_UNKLN = capability_put(serv_capindex, "UNKLN", NULL);
        CAP_CLUSTER = capability_put(serv_capindex, "CLUSTER", NULL);
@@ -139,18 +134,19 @@ init_builtin_capabs(void)
 
        cli_capindex = capability_index_create("client capabilities");
 
-       CLICAP_MULTI_PREFIX = capability_put(cli_capindex, "multi-prefix", NULL);
-       CLICAP_ACCOUNT_NOTIFY = capability_put(cli_capindex, "account-notify", NULL);
-       CLICAP_EXTENDED_JOIN = capability_put(cli_capindex, "extended-join", NULL);
-       CLICAP_AWAY_NOTIFY = capability_put(cli_capindex, "away-notify", NULL);
-       CLICAP_USERHOST_IN_NAMES = capability_put(cli_capindex, "userhost-in-names", NULL);
+       CLICAP_MULTI_PREFIX = capability_put(cli_capindex, "multi-prefix", &high_priority);
+       CLICAP_ACCOUNT_NOTIFY = capability_put(cli_capindex, "account-notify", &high_priority);
+       CLICAP_EXTENDED_JOIN = capability_put(cli_capindex, "extended-join", &high_priority);
+       CLICAP_AWAY_NOTIFY = capability_put(cli_capindex, "away-notify", &high_priority);
+       CLICAP_USERHOST_IN_NAMES = capability_put(cli_capindex, "userhost-in-names", &high_priority);
        CLICAP_CAP_NOTIFY = capability_put(cli_capindex, "cap-notify", NULL);
-       CLICAP_CHGHOST = capability_put(cli_capindex, "chghost", NULL);
+       CLICAP_CHGHOST = capability_put(cli_capindex, "chghost", &high_priority);
        CLICAP_ECHO_MESSAGE = capability_put(cli_capindex, "echo-message", NULL);
 }
 
 static CNCB serv_connect_callback;
 static CNCB serv_connect_ssl_callback;
+static SSL_OPEN_CB serv_connect_ssl_open_callback;
 
 /*
  * hunt_server - Do the basic thing in delivering the message (command)
@@ -300,7 +296,7 @@ try_connections(void *unused)
                 */
                client_p = find_server(NULL, tmp_p->name);
 
-               if(!client_p && (CurrUsers(cltmp) < MaxUsers(cltmp)) && !connecting)
+               if(!client_p && (CurrUsers(cltmp) < MaxAutoconn(cltmp)) && !connecting)
                {
                        server_p = tmp_p;
 
@@ -332,7 +328,7 @@ try_connections(void *unused)
         * error afterwards if it fails.
         *   -- adrian
         */
-       sendto_realops_snomask(SNO_GENERAL, L_ALL,
+       sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
                        "Connection to %s activated",
                        server_p->name);
 
@@ -347,6 +343,9 @@ check_server(const char *name, struct Client *client_p)
        rb_dlink_node *ptr;
        int error = -1;
        const char *encr;
+       bool name_matched = false;
+       bool host_matched = false;
+       bool certfp_failed = false;
 
        s_assert(NULL != client_p);
        if(client_p == NULL)
@@ -360,6 +359,8 @@ check_server(const char *name, struct Client *client_p)
 
        RB_DLINK_FOREACH(ptr, server_conf_list.head)
        {
+               struct rb_sockaddr_storage client_addr;
+
                tmp_p = ptr->data;
 
                if(ServerConfIllegal(tmp_p))
@@ -368,14 +369,21 @@ check_server(const char *name, struct Client *client_p)
                if(!match(tmp_p->name, name))
                        continue;
 
-               error = -3;
+               name_matched = true;
 
-               /* XXX: Fix me for IPv6 */
-               /* XXX sockhost is the IPv4 ip as a string */
-               if(match(tmp_p->host, client_p->host) ||
-                  match(tmp_p->host, client_p->sockhost))
+               if(rb_inet_pton_sock(client_p->sockhost, &client_addr) <= 0)
+                       SET_SS_FAMILY(&client_addr, AF_UNSPEC);
+
+               if((tmp_p->connect_host && match(tmp_p->connect_host, client_p->host))
+                       || (GET_SS_FAMILY(&client_addr) == GET_SS_FAMILY(&tmp_p->connect4)
+                               && comp_with_mask_sock((struct sockaddr *)&client_addr,
+                                       (struct sockaddr *)&tmp_p->connect4, 32))
+                       || (GET_SS_FAMILY(&client_addr) == GET_SS_FAMILY(&tmp_p->connect6)
+                               && comp_with_mask_sock((struct sockaddr *)&client_addr,
+                                       (struct sockaddr *)&tmp_p->connect6, 128))
+                       )
                {
-                       error = -2;
+                       host_matched = true;
 
                        if(tmp_p->passwd)
                        {
@@ -397,8 +405,10 @@ check_server(const char *name, struct Client *client_p)
 
                        if(tmp_p->certfp)
                        {
-                               if(!client_p->certfp || strcasecmp(tmp_p->certfp, client_p->certfp) != 0)
+                               if(!client_p->certfp || rb_strcasecmp(tmp_p->certfp, client_p->certfp) != 0) {
+                                       certfp_failed = true;
                                        continue;
+                               }
                        }
 
                        server_p = tmp_p;
@@ -407,21 +417,31 @@ check_server(const char *name, struct Client *client_p)
        }
 
        if(server_p == NULL)
+       {
+               /* return the most specific error */
+               if(certfp_failed)
+                       error = -6;
+               else if(host_matched)
+                       error = -2;
+               else if(name_matched)
+                       error = -3;
+
                return error;
+       }
 
        if(ServerConfSSL(server_p) && client_p->localClient->ssl_ctl == NULL)
        {
                return -5;
        }
 
+       if (client_p->localClient->att_sconf && client_p->localClient->att_sconf->class == server_p->class) {
+               /* this is an outgoing connection that is already attached to the correct class */
+       } else if (CurrUsers(server_p->class) >= MaxUsers(server_p->class)) {
+               return -7;
+       }
        attach_server_conf(client_p, server_p);
 
-       /* clear ZIP/TB if they support but we dont want them */
-#ifdef HAVE_LIBZ
-       if(!ServerConfCompressed(server_p))
-#endif
-               ClearCap(client_p, CAP_ZIP);
-
+       /* clear TB if they support but we dont want it */
        if(!ServerConfTb(server_p))
                ClearCap(client_p, CAP_TB);
 
@@ -445,19 +465,12 @@ send_capabilities(struct Client *client_p, unsigned int cap_can_send)
 static void
 burst_ban(struct Client *client_p)
 {
-       rb_dlink_node *ptr;
        struct ConfItem *aconf;
-       const char *type, *oper;
-       /* +5 for !,@,{,} and null */
-       char operbuf[NICKLEN + USERLEN + HOSTLEN + HOSTLEN + 5];
-       char *p;
-       size_t melen;
-
-       melen = strlen(me.name);
-       RB_DLINK_FOREACH(ptr, prop_bans.head)
-       {
-               aconf = ptr->data;
+       const char *type;
+       rb_dictionary_iter state;
 
+       RB_DICTIONARY_FOREACH(aconf, &state, prop_bans_dict)
+       {
                /* Skip expired stuff. */
                if(aconf->lifetime < rb_current_time())
                        continue;
@@ -471,24 +484,6 @@ burst_ban(struct Client *client_p)
                        default:
                                continue;
                }
-               oper = aconf->info.oper;
-               if(aconf->flags & CONF_FLAGS_MYOPER)
-               {
-                       /* Our operator{} names may not be meaningful
-                        * to other servers, so rewrite to our server
-                        * name.
-                        */
-                       rb_strlcpy(operbuf, aconf->info.oper, sizeof buf);
-                       p = strrchr(operbuf, '{');
-                       if (p != NULL &&
-                                       operbuf + sizeof operbuf - p > (ptrdiff_t)(melen + 2))
-                       {
-                               memcpy(p + 1, me.name, melen);
-                               p[melen + 1] = '}';
-                               p[melen + 2] = '\0';
-                               oper = operbuf;
-                       }
-               }
                sendto_one(client_p, ":%s BAN %s %s %s %lu %d %d %s :%s%s%s",
                                me.id,
                                type,
@@ -496,7 +491,7 @@ burst_ban(struct Client *client_p)
                                (unsigned long)aconf->created,
                                (int)(aconf->hold - aconf->created),
                                (int)(aconf->lifetime - aconf->created),
-                               oper,
+                               aconf->info.oper,
                                aconf->passwd,
                                aconf->spasswd ? "|" : "",
                                aconf->spasswd ? aconf->spasswd : "");
@@ -515,51 +510,26 @@ burst_modes_TS6(struct Client *client_p, struct Channel *chptr,
 {
        rb_dlink_node *ptr;
        struct Ban *banptr;
-       char *t;
-       int tlen;
-       int mlen;
-       int cur_len;
 
-       cur_len = mlen = sprintf(buf, ":%s BMASK %ld %s %c :",
-                                   me.id, (long) chptr->channelts, chptr->chname, flag);
-       t = buf + mlen;
+       send_multiline_init(client_p, " ", ":%s BMASK %ld %s %c :",
+                       me.id,
+                       (long)chptr->channelts,
+                       chptr->chname,
+                       flag);
 
-       RB_DLINK_FOREACH(ptr, list->head)
+       RB_DLINK_FOREACH_PREV(ptr, list->tail)
        {
                banptr = ptr->data;
 
-               tlen = strlen(banptr->banstr) + (banptr->forward ? strlen(banptr->forward) + 1 : 0) + 1;
-
-               /* uh oh */
-               if(cur_len + tlen > BUFSIZE - 3)
-               {
-                       /* the one we're trying to send doesnt fit at all! */
-                       if(cur_len == mlen)
-                       {
-                               s_assert(0);
-                               continue;
-                       }
-
-                       /* chop off trailing space and send.. */
-                       *(t-1) = '\0';
-                       sendto_one(client_p, "%s", buf);
-                       cur_len = mlen;
-                       t = buf + mlen;
-               }
-
                if (banptr->forward)
-                       sprintf(t, "%s$%s ", banptr->banstr, banptr->forward);
+                       send_multiline_item(client_p, "%s$%s",
+                                       banptr->banstr,
+                                       banptr->forward);
                else
-                       sprintf(t, "%s ", banptr->banstr);
-               t += tlen;
-               cur_len += tlen;
+                       send_multiline_item(client_p, "%s", banptr->banstr);
        }
 
-       /* cant ever exit the loop above without having modified buf,
-        * chop off trailing space and send.
-        */
-       *(t-1) = '\0';
-       sendto_one(client_p, "%s", buf);
+       send_multiline_fini(client_p, NULL);
 }
 
 /*
@@ -594,6 +564,9 @@ burst_TS6(struct Client *client_p)
                if(!IsPerson(target_p))
                        continue;
 
+               if(MyClient(target_p->from) && target_p->localClient->att_sconf != NULL && ServerConfNoExport(target_p->localClient->att_sconf))
+                       continue;
+
                send_umode(NULL, target_p, 0, ubuf);
                if(!*ubuf)
                {
@@ -640,6 +613,19 @@ burst_TS6(struct Client *client_p)
                                   use_id(target_p),
                                   target_p->user->away);
 
+               if (IsOper(target_p) && target_p->user && target_p->user->opername)
+               {
+                       if (target_p->user->privset)
+                               sendto_one(client_p, ":%s OPER %s %s",
+                                               use_id(target_p),
+                                               target_p->user->opername,
+                                               target_p->user->privset->name);
+                       else
+                               sendto_one(client_p, ":%s OPER %s",
+                                               use_id(target_p),
+                                               target_p->user->opername);
+               }
+
                hclientinfo.target = target_p;
                call_hook(h_burst_client, &hclientinfo);
        }
@@ -778,7 +764,7 @@ server_estab(struct Client *client_p)
        if((server_p = client_p->localClient->att_sconf) == NULL)
        {
                /* This shouldn't happen, better tell the ops... -A1kmm */
-               sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL,
+               sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
                                     "Warning: Lost connect{} block for server %s!", host);
                return exit_client(client_p, client_p, client_p, "Lost connect{} block!");
        }
@@ -803,8 +789,7 @@ server_estab(struct Client *client_p)
                           EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id);
 
                /* pass info to new server */
-               send_capabilities(client_p, default_server_capabs
-                                 | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0)
+               send_capabilities(client_p, default_server_capabs | CAP_MASK
                                  | (ServerConfTb(server_p) ? CAP_TB : 0));
 
                sendto_one(client_p, "SERVER %s 1 :%s%s",
@@ -816,19 +801,12 @@ server_estab(struct Client *client_p)
        if(!rb_set_buffers(client_p->localClient->F, READBUF_SIZE))
                ilog_error("rb_set_buffers failed for server");
 
-       /* Enable compression now */
-       if(IsCapable(client_p, CAP_ZIP))
-       {
-               start_zlib_session(client_p);
-       }
-       sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time());
-
        client_p->servptr = &me;
 
        if(IsAnyDead(client_p))
                return CLIENT_EXITED;
 
-       SetServer(client_p);
+       sendto_one(client_p, "SVINFO %d %d 0 :%ld", TS_CURRENT, TS_MIN, (long int)rb_current_time());
 
        rb_dlinkAdd(client_p, &client_p->lnode, &me.serv->servers);
        rb_dlinkMoveNode(&client_p->localClient->tnode, &unknown_list, &serv_list);
@@ -840,6 +818,7 @@ server_estab(struct Client *client_p)
        add_to_client_hash(client_p->name, client_p);
        /* doesnt duplicate client_p->serv if allocated this struct already */
        make_server(client_p);
+       SetServer(client_p);
 
        client_p->serv->caps = client_p->localClient->caps;
 
@@ -887,6 +866,9 @@ server_estab(struct Client *client_p)
                if(target_p == client_p)
                        continue;
 
+               if(target_p->localClient->att_sconf != NULL && ServerConfNoExport(target_p->localClient->att_sconf))
+                       continue;
+
                if(has_id(target_p) && has_id(client_p))
                {
                        sendto_one(target_p, ":%s SID %s 2 %s :%s%s",
@@ -935,6 +917,10 @@ server_estab(struct Client *client_p)
                if(IsMe(target_p) || target_p->from == client_p)
                        continue;
 
+               /* don't distribute downstream leaves of servers that are no-export */
+               if(MyClient(target_p->from) && target_p->from->localClient->att_sconf != NULL && ServerConfNoExport(target_p->from->localClient->att_sconf))
+                       continue;
+
                /* presumption, if target has an id, so does its uplink */
                if(has_id(client_p) && has_id(target_p))
                        sendto_one(client_p, ":%s SID %s %d %s :%s%s",
@@ -995,7 +981,8 @@ int
 serv_connect(struct server_conf *server_p, struct Client *by)
 {
        struct Client *client_p;
-       struct rb_sockaddr_storage myipnum;
+       struct sockaddr_storage sa_connect[2];
+       struct sockaddr_storage sa_bind[ARRAY_SIZE(sa_connect)];
        char note[HOSTLEN + 10];
        rb_fde_t *F;
 
@@ -1003,16 +990,66 @@ serv_connect(struct server_conf *server_p, struct Client *by)
        if(server_p == NULL)
                return 0;
 
+       for (int i = 0; i < ARRAY_SIZE(sa_connect); i++) {
+               SET_SS_FAMILY(&sa_connect[i], AF_UNSPEC);
+               SET_SS_FAMILY(&sa_bind[i], AF_UNSPEC);
+       }
+
+       if(server_p->aftype == AF_UNSPEC
+               && GET_SS_FAMILY(&server_p->connect4) == AF_INET
+               && GET_SS_FAMILY(&server_p->connect6) == AF_INET6)
+       {
+               if(rand() % 2 == 0)
+               {
+                       sa_connect[0] = server_p->connect4;
+                       sa_connect[1] = server_p->connect6;
+                       sa_bind[0] = server_p->bind4;
+                       sa_bind[1] = server_p->bind6;
+               }
+               else
+               {
+                       sa_connect[0] = server_p->connect6;
+                       sa_connect[1] = server_p->connect4;
+                       sa_bind[0] = server_p->bind6;
+                       sa_bind[1] = server_p->bind4;
+               }
+       }
+       else if(server_p->aftype == AF_INET || GET_SS_FAMILY(&server_p->connect4) == AF_INET)
+       {
+               sa_connect[0] = server_p->connect4;
+               sa_bind[0] = server_p->bind4;
+       }
+       else if(server_p->aftype == AF_INET6 || GET_SS_FAMILY(&server_p->connect6) == AF_INET6)
+       {
+               sa_connect[0] = server_p->connect6;
+               sa_bind[0] = server_p->bind6;
+       }
+
        /* log */
-       rb_inet_ntop_sock((struct sockaddr *)&server_p->my_ipnum, buf, sizeof(buf));
-       ilog(L_SERVER, "Connect to *[%s] @%s", server_p->name, buf);
+#ifdef HAVE_LIBSCTP
+       if (ServerConfSCTP(server_p) && GET_SS_FAMILY(&sa_connect[1]) != AF_UNSPEC) {
+               char buf2[HOSTLEN + 1];
+
+               buf[0] = 0;
+               buf2[0] = 0;
+               rb_inet_ntop_sock((struct sockaddr *)&sa_connect[0], buf, sizeof(buf));
+               rb_inet_ntop_sock((struct sockaddr *)&sa_connect[1], buf2, sizeof(buf2));
+               ilog(L_SERVER, "Connect to *[%s] @%s&%s", server_p->name, buf, buf2);
+       } else {
+#else
+       {
+#endif
+               buf[0] = 0;
+               rb_inet_ntop_sock((struct sockaddr *)&sa_connect[0], buf, sizeof(buf));
+               ilog(L_SERVER, "Connect to *[%s] @%s", server_p->name, buf);
+       }
 
        /*
         * Make sure this server isn't already connected
         */
        if((client_p = find_server(NULL, server_p->name)))
        {
-               sendto_realops_snomask(SNO_GENERAL, L_ALL,
+               sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
                                     "Server %s already present from %s",
                                     server_p->name, client_p->name);
                if(by && IsPerson(by) && !MyClient(by))
@@ -1021,9 +1058,28 @@ serv_connect(struct server_conf *server_p, struct Client *by)
                return 0;
        }
 
+       if (CurrUsers(server_p->class) >= MaxUsers(server_p->class)) {
+               sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
+                                    "No more connections allowed in class \"%s\" for server %s",
+                                    server_p->class->class_name, server_p->name);
+               if(by && IsPerson(by) && !MyClient(by))
+                       sendto_one_notice(by, ":No more connections allowed in class \"%s\" for server %s",
+                                    server_p->class->class_name, server_p->name);
+               return 0;
+       }
+
        /* create a socket for the server connection */
-       if((F = rb_socket(GET_SS_FAMILY(&server_p->my_ipnum), SOCK_STREAM, 0, NULL)) == NULL)
-       {
+       if(GET_SS_FAMILY(&sa_connect[0]) == AF_UNSPEC) {
+               ilog_error("unspecified socket address family");
+               return 0;
+#ifdef HAVE_LIBSCTP
+       } else if (ServerConfSCTP(server_p)) {
+               if ((F = rb_socket(AF_INET6, SOCK_STREAM, IPPROTO_SCTP, NULL)) == NULL) {
+                       ilog_error("opening a stream socket");
+                       return 0;
+               }
+#endif
+       } else if ((F = rb_socket(GET_SS_FAMILY(&sa_connect[0]), SOCK_STREAM, IPPROTO_TCP, NULL)) == NULL) {
                ilog_error("opening a stream socket");
                return 0;
        }
@@ -1037,16 +1093,15 @@ serv_connect(struct server_conf *server_p, struct Client *by)
 
        /* Copy in the server, hostname, fd */
        rb_strlcpy(client_p->name, server_p->name, sizeof(client_p->name));
-       rb_strlcpy(client_p->host, server_p->host, sizeof(client_p->host));
+       if(server_p->connect_host)
+               rb_strlcpy(client_p->host, server_p->connect_host, sizeof(client_p->host));
+       else
+               rb_strlcpy(client_p->host, buf, sizeof(client_p->host));
        rb_strlcpy(client_p->sockhost, buf, sizeof(client_p->sockhost));
        client_p->localClient->F = F;
        /* shove the port number into the sockaddr */
-#ifdef RB_IPV6
-       if(GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET6)
-               ((struct sockaddr_in6 *)&server_p->my_ipnum)->sin6_port = htons(server_p->port);
-       else
-#endif
-               ((struct sockaddr_in *)&server_p->my_ipnum)->sin_port = htons(server_p->port);
+       SET_SS_PORT(&sa_connect[0], htons(server_p->port));
+       SET_SS_PORT(&sa_connect[1], htons(server_p->port));
 
        /*
         * Set up the initial server evilness, ripped straight from
@@ -1074,65 +1129,38 @@ serv_connect(struct server_conf *server_p, struct Client *by)
         */
        make_server(client_p);
        if(by && IsClient(by))
-               strcpy(client_p->serv->by, by->name);
+               rb_strlcpy(client_p->serv->by, by->name, sizeof(client_p->serv->by));
        else
                strcpy(client_p->serv->by, "AutoConn.");
 
        SetConnecting(client_p);
        rb_dlinkAddTail(client_p, &client_p->node, &global_client_list);
 
-       if(ServerConfVhosted(server_p))
-       {
-               memcpy(&myipnum, &server_p->my_ipnum, sizeof(myipnum));
-               ((struct sockaddr_in *)&myipnum)->sin_port = 0;
-               SET_SS_FAMILY(&myipnum, GET_SS_FAMILY(&server_p->my_ipnum));
-
-       }
-       else if(GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET && ServerInfo.specific_ipv4_vhost)
-       {
-               memcpy(&myipnum, &ServerInfo.ip, sizeof(myipnum));
-               ((struct sockaddr_in *)&myipnum)->sin_port = 0;
-               SET_SS_FAMILY(&myipnum, AF_INET);
-               SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in));
+       for (int i = 0; i < ARRAY_SIZE(sa_connect); i++) {
+               if (GET_SS_FAMILY(&sa_bind[i]) == AF_UNSPEC) {
+                       if (GET_SS_FAMILY(&sa_connect[i]) == GET_SS_FAMILY(&ServerInfo.bind4))
+                               sa_bind[i] = ServerInfo.bind4;
+                       if (GET_SS_FAMILY(&sa_connect[i]) == GET_SS_FAMILY(&ServerInfo.bind6))
+                               sa_bind[i] = ServerInfo.bind6;
+               }
        }
 
-#ifdef RB_IPV6
-       else if((GET_SS_FAMILY(&server_p->my_ipnum) == AF_INET6) && ServerInfo.specific_ipv6_vhost)
+#ifdef HAVE_LIBSCTP
+       if (ServerConfSCTP(server_p)) {
+               rb_connect_sctp(client_p->localClient->F,
+                       sa_connect, ARRAY_SIZE(sa_connect), sa_bind, ARRAY_SIZE(sa_bind),
+                       ServerConfSSL(server_p) ? serv_connect_ssl_callback : serv_connect_callback,
+                       client_p, ConfigFileEntry.connect_timeout);
+       } else {
+#else
        {
-               memcpy(&myipnum, &ServerInfo.ip6, sizeof(myipnum));
-               ((struct sockaddr_in6 *)&myipnum)->sin6_port = 0;
-               SET_SS_FAMILY(&myipnum, AF_INET6);
-               SET_SS_LEN(&myipnum, sizeof(struct sockaddr_in6));
-       }
 #endif
-       else
-       {
-               if(ServerConfSSL(server_p))
-               {
-                       rb_connect_tcp(client_p->localClient->F,
-                                      (struct sockaddr *)&server_p->my_ipnum, NULL, 0,
-                                      serv_connect_ssl_callback, client_p,
-                                      ConfigFileEntry.connect_timeout);
-               }
-               else
-                       rb_connect_tcp(client_p->localClient->F,
-                                      (struct sockaddr *)&server_p->my_ipnum, NULL, 0,
-                                      serv_connect_callback, client_p,
-                                      ConfigFileEntry.connect_timeout);
-
-               return 1;
+               rb_connect_tcp(client_p->localClient->F,
+                       (struct sockaddr *)&sa_connect[0],
+                       GET_SS_FAMILY(&sa_bind[0]) == AF_UNSPEC ? NULL : (struct sockaddr *)&sa_bind[0],
+                       ServerConfSSL(server_p) ? serv_connect_ssl_callback : serv_connect_callback,
+                       client_p, ConfigFileEntry.connect_timeout);
        }
-       if(ServerConfSSL(server_p))
-               rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&server_p->my_ipnum,
-                              (struct sockaddr *)&myipnum,
-                              GET_SS_LEN(&myipnum), serv_connect_ssl_callback, client_p,
-                              ConfigFileEntry.connect_timeout);
-       else
-               rb_connect_tcp(client_p->localClient->F, (struct sockaddr *)&server_p->my_ipnum,
-                              (struct sockaddr *)&myipnum,
-                              GET_SS_LEN(&myipnum), serv_connect_callback, client_p,
-                              ConfigFileEntry.connect_timeout);
-
        return 1;
 }
 
@@ -1156,15 +1184,22 @@ serv_connect_ssl_callback(rb_fde_t *F, int status, void *data)
 
        }
        client_p->localClient->F = xF[0];
+       client_p->localClient->ssl_callback = serv_connect_ssl_open_callback;
 
-       client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], rb_get_fd(xF[0]));
+       client_p->localClient->ssl_ctl = start_ssld_connect(F, xF[1], connid_get(client_p));
        if(!client_p->localClient->ssl_ctl)
        {
                serv_connect_callback(client_p->localClient->F, RB_ERROR, data);
                return;
        }
        SetSSL(client_p);
-       serv_connect_callback(client_p->localClient->F, RB_OK, client_p);
+}
+
+static int
+serv_connect_ssl_open_callback(struct Client *client_p, int status)
+{
+       serv_connect_callback(client_p->localClient->F, status, client_p);
+       return 1; /* suppress default exit_client handler for status != RB_OK */
 }
 
 /*
@@ -1208,9 +1243,9 @@ serv_connect_callback(rb_fde_t *F, int status, void *data)
                /* COMM_ERR_TIMEOUT wont have an errno associated with it,
                 * the others will.. --fl
                 */
-               if(status == RB_ERR_TIMEOUT)
+               if(status == RB_ERR_TIMEOUT || status == RB_ERROR_SSL)
                {
-                       sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL,
+                       sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
                                        "Error connecting to %s[%s]: %s",
                                        client_p->name,
                                        "255.255.255.255",
@@ -1222,7 +1257,7 @@ serv_connect_callback(rb_fde_t *F, int status, void *data)
                else
                {
                        errstr = strerror(rb_get_sockerr(F));
-                       sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL,
+                       sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
                                        "Error connecting to %s[%s]: %s (%s)",
                                        client_p->name,
                                        "255.255.255.255",
@@ -1240,12 +1275,24 @@ serv_connect_callback(rb_fde_t *F, int status, void *data)
        /* Get the C/N lines */
        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",
+               sendto_realops_snomask(SNO_GENERAL, L_NETWIDE, "Lost connect{} block for %s",
                                client_p->name);
                exit_client(client_p, client_p, &me, "Lost connect{} block");
                return;
        }
 
+       if(server_p->certfp && (!client_p->certfp || rb_strcasecmp(server_p->certfp, client_p->certfp) != 0))
+       {
+               sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
+                    "Connection to %s has invalid certificate fingerprint %s",
+                    client_p->name, client_p->certfp);
+               ilog(L_SERVER, "Access denied, invalid certificate fingerprint %s from %s",
+                    client_p->certfp, log_client_name(client_p, SHOW_IP));
+
+               exit_client(client_p, client_p, &me, "Invalid fingerprint.");
+               return;
+       }
+
        /* Next, send the initial handshake */
        SetHandshake(client_p);
 
@@ -1254,8 +1301,7 @@ serv_connect_callback(rb_fde_t *F, int status, void *data)
                   EmptyString(server_p->spasswd) ? "*" : server_p->spasswd, TS_CURRENT, me.id);
 
        /* pass my info to the new server */
-       send_capabilities(client_p, default_server_capabs
-                         | (ServerConfCompressed(server_p) ? CAP_ZIP_SUPPORTED : 0)
+       send_capabilities(client_p, default_server_capabs | CAP_MASK
                          | (ServerConfTb(server_p) ? CAP_TB : 0));
 
        sendto_one(client_p, "SERVER %s 1 :%s%s",
@@ -1268,7 +1314,7 @@ serv_connect_callback(rb_fde_t *F, int status, void *data)
         */
        if(IsAnyDead(client_p))
        {
-               sendto_realops_snomask(SNO_GENERAL, is_remote_connect(client_p) ? L_NETWIDE : L_ALL,
+               sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
                                     "%s went dead during handshake", client_p->name);
                exit_client(client_p, client_p, &me, "Went dead during handshake");
                return;