--- /dev/null
+/*
+ * ngIRCd -- The Next Generation IRC Daemon
+ * Copyright (c)2001-2007 Alexander Barton (alex@barton.de)
+ *
+ * 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.
+ *
+ * Handlers for IRC numerics sent to the server
+ */
+
+#include "portab.h"
+
+static char UNUSED id[] = "$Id: numeric.c,v 1.1 2007/11/21 12:20:32 alex Exp $";
+
+#include "imp.h"
+#include <assert.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "defines.h"
+#include "resolve.h"
+#include "conn.h"
+#include "conf.h"
+#include "conn.h"
+#include "client.h"
+#include "channel.h"
+#include "irc-write.h"
+#include "lists.h"
+#include "log.h"
+#include "messages.h"
+#include "parse.h"
+
+#include "exp.h"
+#include "numeric.h"
+
+
+/**
+ * Announce new server in the network
+ * @param Client New server
+ * @param Server Existing server in the network
+ */
+static bool
+Announce_Server(CLIENT * Client, CLIENT * Server)
+{
+ CLIENT *c;
+
+ if (Client_Conn(Server) > NONE) {
+ /* Announce the new server to the one already registered
+ * which is directly connected to the local server */
+ if (!IRC_WriteStrClient
+ (Server, "SERVER %s %d %d :%s", Client_ID(Client),
+ Client_Hops(Client) + 1, Client_MyToken(Client),
+ Client_Info(Client)))
+ return DISCONNECTED;
+ }
+
+ if (Client_Hops(Server) == 1)
+ c = Client_ThisServer();
+ else
+ c = Client_Introducer(Server);
+
+ /* Inform new server about the one already registered in the network */
+ return IRC_WriteStrClientPrefix(Client, c, "SERVER %s %d %d :%s",
+ Client_ID(Server), Client_Hops(Server) + 1,
+ Client_MyToken(Server), Client_Info(Server));
+} /* Announce_Server */
+
+
+/**
+ * Announce existing user to a new server
+ * @param Client New server
+ * @param User Existing user in the network
+ */
+static bool
+Announce_User(CLIENT * Client, CLIENT * User)
+{
+ return IRC_WriteStrClient(Client, "NICK %s %d %s %s %d +%s :%s",
+ Client_ID(User), Client_Hops(User) + 1, Client_User(User),
+ Client_Hostname(User), Client_MyToken(Client_Introducer(User)),
+ Client_Modes(User), Client_Info(User));
+} /* Announce_User */
+
+
+#ifdef IRCPLUS
+
+/**
+ * Synchronize invite and ban lists between servers
+ * @param Client New server
+ */
+static bool
+Synchronize_Lists(CLIENT * Client)
+{
+ CHANNEL *c;
+ struct list_head *head;
+ struct list_elem *elem;
+
+ assert(Client != NULL);
+
+ c = Channel_First();
+ while (c) {
+ /* ban list */
+ head = Channel_GetListBans(c);
+ elem = Lists_GetFirst(head);
+ while (elem) {
+ if (!IRC_WriteStrClient(Client, "MODE %s +b %s",
+ Channel_Name(c),
+ Lists_GetMask(elem))) {
+ return DISCONNECTED;
+ }
+ elem = Lists_GetNext(elem);
+ }
+
+ /* invite list */
+ head = Channel_GetListInvites(c);
+ elem = Lists_GetFirst(head);
+ while (elem) {
+ if (!IRC_WriteStrClient(Client, "MODE %s +I %s",
+ Channel_Name(c),
+ Lists_GetMask(elem))) {
+ return DISCONNECTED;
+ }
+ elem = Lists_GetNext(elem);
+ }
+
+ c = Channel_Next(c);
+ }
+ return CONNECTED;
+}
+
+
+/**
+ * Send CHANINFO commands to a new server (inform it about existing channels).
+ * @param Client New server
+ * @param Chan Channel
+ */
+static bool
+Send_CHANINFO(CLIENT * Client, CHANNEL * Chan)
+{
+ char *modes, *topic;
+ bool has_k, has_l;
+
+#ifdef DEBUG
+ Log(LOG_DEBUG, "Sending CHANINFO commands ...");
+#endif
+
+ modes = Channel_Modes(Chan);
+ topic = Channel_Topic(Chan);
+
+ if (!*modes && !*topic)
+ return CONNECTED;
+
+ has_k = strchr(modes, 'k') != NULL;
+ has_l = strchr(modes, 'l') != NULL;
+
+ /* send CHANINFO */
+ if (!has_k && !has_l) {
+ if (!*topic) {
+ /* "CHANINFO <chan> +<modes>" */
+ return IRC_WriteStrClient(Client, "CHANINFO %s +%s",
+ Channel_Name(Chan), modes);
+ }
+ /* "CHANINFO <chan> +<modes> :<topic>" */
+ return IRC_WriteStrClient(Client, "CHANINFO %s +%s :%s",
+ Channel_Name(Chan), modes, topic);
+ }
+ /* "CHANINFO <chan> +<modes> <key> <limit> :<topic>" */
+ return IRC_WriteStrClient(Client, "CHANINFO %s +%s %s %lu :%s",
+ Channel_Name(Chan), modes,
+ has_k ? Channel_Key(Chan) : "*",
+ has_l ? Channel_MaxUsers(Chan) : 0, topic);
+} /* Send_CHANINFO */
+
+#endif /* IRCPLUS */
+
+
+/**
+ * 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)
+{
+ char str[LINE_LEN];
+ int max_hops, i;
+ CLIENT *c, *cl;
+ CHANNEL *chan;
+ CL2CHAN *cl2chan;
+
+ 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) {
+ if (!Announce_User(Client, c))
+ return DISCONNECTED;
+ }
+ c = Client_Next(c);
+ }
+
+ /* Announce all channels to the new server */
+ chan = Channel_First();
+ while (chan) {
+#ifdef IRCPLUS
+ /* Send CHANINFO if the peer supports it */
+ if (strchr(Client_Flags(Client), 'C')) {
+ if (!Send_CHANINFO(Client, chan))
+ return DISCONNECTED;
+ }
+#endif
+
+ /* 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);
+
+ /* Nick name, with modes (if applicable) */
+ if (str[strlen(str) - 1] != ':')
+ strlcat(str, ",", sizeof(str));
+ if (strchr(Channel_UserModes(chan, cl), 'v'))
+ strlcat(str, "+", sizeof(str));
+ if (strchr(Channel_UserModes(chan, cl), 'o'))
+ strlcat(str, "@", sizeof(str));
+ strlcat(str, Client_ID(cl), sizeof(str));
+
+ /* Send the data if the buffer is "full" */
+ if (strlen(str) > (LINE_LEN - CLIENT_NICK_LEN - 8)) {
+ if (!IRC_WriteStrClient(Client, "%s", str))
+ return DISCONNECTED;
+ snprintf(str, sizeof(str), "NJOIN %s :",
+ Channel_Name(chan));
+ }
+
+ 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;
+ }
+
+ /* Get next channel ... */
+ chan = Channel_Next(chan);
+ }
+
+#ifdef IRCPLUS
+ if (strchr(Client_Flags(Client), 'L')) {
+ LogDebug("Synchronizing INVITE- and BAN-lists ...");
+ if (!Synchronize_Lists(Client))
+ return DISCONNECTED;
+ }
+#endif
+
+ return CONNECTED;
+} /* IRC_Num_ENDOFMOTD */
+
+
+/**
+ * Handle ISUPPORT (005) numeric.
+ */
+GLOBAL bool
+IRC_Num_ISUPPORT(CLIENT * Client, REQUEST * Req)
+{
+ int i;
+ char *key, *value;
+
+ for (i = 1; i < Req->argc - 1; i++) {
+ key = Req->argv[i];
+ value = strchr(key, '=');
+ if (value)
+ *value++ = '\0';
+ else
+ value = "";
+
+ if (strcmp("NICKLEN", key) == 0) {
+ if ((unsigned int)atol(value) == Conf_MaxNickLength - 1)
+ continue;
+
+ /* Nick name length settings are different! */
+ Log(LOG_ERR,
+ "Peer uses incompatible nick name length (%d/%d)! Disconnecting ...",
+ Conf_MaxNickLength - 1, atoi(value));
+ Conn_Close(Client_Conn(Client),
+ "Incompatible nick name length",
+ NULL, false);
+ return DISCONNECTED;
+ }
+ }
+
+ return CONNECTED;
+} /* IRC_Num_ISUPPORT */
+
+
+/* -eof- */
projects / ngircd.git / commitdiff