/** * Announce a channel and its users in the network. */ static bool Announce_Channel(CLIENT *Client, CHANNEL *Chan) { CL2CHAN *cl2chan; CLIENT *cl; char str[COMMAND_LEN], *ptr; bool njoin, xop; /* Check features of remote server */ njoin = Conn_Options(Client_Conn(Client)) & CONN_RFC1459 ? false : true; xop = Client_HasFlag(Client, 'X') ? true : false; /* Get all the members of this channel */ cl2chan = Channel_FirstMember(Chan); snprintf(str, sizeof(str), "NJOIN %s :", Channel_Name(Chan)); while (cl2chan) { cl = Channel_GetClient(cl2chan); assert(cl != NULL); if (njoin) { /* RFC 2813: send NJOIN with nicknames and modes * (if user is channel operator or has voice) */ if (str[strlen(str) - 1] != ':') strlcat(str, ",", sizeof(str)); /* Prepare user prefix (ChanOp, voiced, ...) */ if (xop && Channel_UserHasMode(Chan, cl, 'q')) strlcat(str, "~", sizeof(str)); if (xop && Channel_UserHasMode(Chan, cl, 'a')) strlcat(str, "&", sizeof(str)); if (Channel_UserHasMode(Chan, cl, 'o')) strlcat(str, "@", sizeof(str)); if (xop && Channel_UserHasMode(Chan, cl, 'h')) strlcat(str, "%", sizeof(str)); if (Channel_UserHasMode(Chan, cl, 'v')) strlcat(str, "+", sizeof(str)); strlcat(str, Client_ID(cl), sizeof(str)); /* Send the data if the buffer is "full" */ if (strlen(str) > (sizeof(str) - CLIENT_NICK_LEN - 8)) { if (!IRC_WriteStrClient(Client, "%s", str)) return DISCONNECTED; snprintf(str, sizeof(str), "NJOIN %s :", Channel_Name(Chan)); } } else { /* RFC 1459: no NJOIN, send JOIN and MODE */ if (!IRC_WriteStrClientPrefix(Client, cl, "JOIN %s", Channel_Name(Chan))) return DISCONNECTED; ptr = Channel_UserModes(Chan, cl); while (*ptr) { if (!IRC_WriteStrClientPrefix(Client, cl, "MODE %s +%c %s", Channel_Name(Chan), ptr[0], Client_ID(cl))) return DISCONNECTED; ptr++; } } cl2chan = Channel_NextMember(Chan, cl2chan); } /* Data left in the buffer? */ if (str[strlen(str) - 1] != ':') { /* Yes, send it ... */ if (!IRC_WriteStrClient(Client, "%s", str)) return DISCONNECTED; } return CONNECTED; } /* Announce_Channel */
/** * Announce an user or service to a server. * * This function differentiates between RFC1459 and RFC2813 server links and * generates the appropriate commands to register the user or service. * * @param Client Server * @param Prefix Prefix for the generated commands * @param User User to announce */ GLOBAL bool Client_Announce(CLIENT * Client, CLIENT * Prefix, CLIENT * User) { CONN_ID conn; char *modes, *user, *host; modes = Client_Modes(User); user = Client_User(User) ? Client_User(User) : "-"; host = Client_Hostname(User) ? Client_Hostname(User) : "-"; conn = Client_Conn(Client); if (Conn_Options(conn) & CONN_RFC1459) { /* RFC 1459 mode: separate NICK and USER commands */ if (! Conn_WriteStr(conn, "NICK %s :%d", Client_ID(User), Client_Hops(User) + 1)) return DISCONNECTED; if (! Conn_WriteStr(conn, ":%s USER %s %s %s :%s", Client_ID(User), user, host, Client_ID(Client_Introducer(User)), Client_Info(User))) return DISCONNECTED; if (modes[0]) { if (! Conn_WriteStr(conn, ":%s MODE %s +%s", Client_ID(User), Client_ID(User), modes)) return DISCONNECTED; } } else { /* RFC 2813 mode: one combined NICK or SERVICE command */ if (Client_Type(User) == CLIENT_SERVICE && Client_HasFlag(Client, 'S')) { if (!IRC_WriteStrClientPrefix(Client, Prefix, "SERVICE %s %d * +%s %d :%s", Client_Mask(User), Client_MyToken(Client_Introducer(User)), modes, Client_Hops(User) + 1, Client_Info(User))) return DISCONNECTED; } else { if (!IRC_WriteStrClientPrefix(Client, Prefix, "NICK %s %d %s %s %d +%s :%s", Client_ID(User), Client_Hops(User) + 1, user, host, Client_MyToken(Client_Introducer(User)), modes, Client_Info(User))) return DISCONNECTED; } } if (Client_HasFlag(Client, 'M')) { /* Synchronize metadata */ if (Client_HostnameCloaked(User)) { if (!IRC_WriteStrClientPrefix(Client, Prefix, "METADATA %s cloakhost :%s", Client_ID(User), Client_HostnameCloaked(User))) return DISCONNECTED; } if (Client_AccountName(User)) { if (!IRC_WriteStrClientPrefix(Client, Prefix, "METADATA %s accountname :%s", Client_ID(User), Client_AccountName(User))) return DISCONNECTED; } if (Conn_GetCertFp(Client_Conn(User))) { if (!IRC_WriteStrClientPrefix(Client, Prefix, "METADATA %s certfp :%s", Client_ID(User), Conn_GetCertFp(Client_Conn(User)))) return DISCONNECTED; } } return CONNECTED; } /* Client_Announce */
/** * Handle ENDOFMOTD (376) numeric and login remote server. * The peer is either an IRC server (no IRC+ protocol), or we got the * ENDOFMOTD numeric from an IRC+ server. We have to register the new server. */ GLOBAL bool IRC_Num_ENDOFMOTD(CLIENT * Client, UNUSED REQUEST * Req) { int max_hops, i; CLIENT *c; CHANNEL *chan; Client_SetType(Client, CLIENT_SERVER); Log(LOG_NOTICE | LOG_snotice, "Server \"%s\" registered (connection %d, 1 hop - direct link).", Client_ID(Client), Client_Conn(Client)); /* Get highest hop count */ max_hops = 0; c = Client_First(); while (c) { if (Client_Hops(c) > max_hops) max_hops = Client_Hops(c); c = Client_Next(c); } /* Inform the new server about all other servers, and announce the * new server to all the already registered ones. Important: we have * to do this "in order" and can't introduce servers of which the * "toplevel server" isn't known already. */ for (i = 0; i < (max_hops + 1); i++) { for (c = Client_First(); c != NULL; c = Client_Next(c)) { if (Client_Type(c) != CLIENT_SERVER) continue; /* not a server */ if (Client_Hops(c) != i) continue; /* not actual "nesting level" */ if (c == Client || c == Client_ThisServer()) continue; /* that's us or the peer! */ if (!Announce_Server(Client, c)) return DISCONNECTED; } } /* Announce all the users to the new server */ c = Client_First(); while (c) { if (Client_Type(c) == CLIENT_USER || Client_Type(c) == CLIENT_SERVICE) { if (!Client_Announce(Client, Client_ThisServer(), c)) return DISCONNECTED; } c = Client_Next(c); } /* Announce all channels to the new server */ chan = Channel_First(); while (chan) { if (Channel_IsLocal(chan)) { chan = Channel_Next(chan); continue; } #ifdef IRCPLUS /* Send CHANINFO if the peer supports it */ if (Client_HasFlag(Client, 'C')) { if (!Send_CHANINFO(Client, chan)) return DISCONNECTED; } #endif if (!Announce_Channel(Client, chan)) return DISCONNECTED; /* Get next channel ... */ chan = Channel_Next(chan); } #ifdef IRCPLUS if (Client_HasFlag(Client, 'L')) { LogDebug("Synchronizing INVITE- and BAN-lists ..."); if (!Synchronize_Lists(Client)) return DISCONNECTED; } #endif if (!IRC_WriteStrClient(Client, "PING :%s", Client_ID(Client_ThisServer()))) return DISCONNECTED; return CONNECTED; } /* IRC_Num_ENDOFMOTD */