#include "portab.h"
-static char UNUSED id[] = "$Id: irc-channel.c,v 1.31 2005/09/02 12:50:25 alex Exp $";
+static char UNUSED id[] = "$Id: irc-channel.c,v 1.45 2008/02/24 18:57:38 fw Exp $";
#include "imp.h"
#include <assert.h>
#include "irc-channel.h"
+/*
+ * RFC 2812, (3.2.1 Join message Command):
+ * Note that this message
+ * accepts a special argument ("0"), which is a special request to leave all
+ * channels the user is currently a member of. The server will process this
+ * message as if the user had sent a PART command (See Section 3.2.2) for
+ * each channel he is a member of.
+ */
+static bool
+part_from_all_channels(CLIENT* client, CLIENT *target)
+{
+ CL2CHAN *cl2chan;
+ CHANNEL *chan;
+
+ while ((cl2chan = Channel_FirstChannelOf(target))) {
+ chan = Channel_GetChannel(cl2chan);
+ assert( chan != NULL );
+ Channel_Part(target, client, Channel_Name(chan), Client_ID(target));
+ }
+ return CONNECTED;
+}
+
+
+static bool
+join_allowed(CLIENT *Client, CLIENT *target, CHANNEL *chan,
+ const char *channame, const char *key)
+{
+ bool is_invited, is_banned;
+ const char *channel_modes;
+
+ is_banned = Lists_Check(Channel_GetListBans(chan), target);
+ is_invited = Lists_Check(Channel_GetListInvites(chan), target);
+
+ if (is_banned && !is_invited) {
+ IRC_WriteStrClient(Client, ERR_BANNEDFROMCHAN_MSG, Client_ID(Client), channame);
+ return false;
+ }
+
+ channel_modes = Channel_Modes(chan);
+ if ((strchr(channel_modes, 'i')) && !is_invited) {
+ /* Channel is "invite-only" (and Client wasn't invited) */
+ IRC_WriteStrClient(Client, ERR_INVITEONLYCHAN_MSG, Client_ID(Client), channame);
+ return false;
+ }
+
+ /* Is the channel protected by a key? */
+ if (strchr(channel_modes, 'k') &&
+ strcmp(Channel_Key(chan), key ? key : ""))
+ {
+ IRC_WriteStrClient(Client, ERR_BADCHANNELKEY_MSG, Client_ID(Client), channame);
+ return false;
+ }
+ /* Are there already too many members? */
+ if ((strchr(channel_modes, 'l')) && (Channel_MaxUsers(chan) <= Channel_MemberCount(chan))) {
+ IRC_WriteStrClient(Client, ERR_CHANNELISFULL_MSG, Client_ID(Client), channame);
+ return false;
+ }
+ return true;
+}
+
+
+static void
+join_set_channelmodes(CHANNEL *chan, CLIENT *target, const char *flags)
+{
+ if (flags) {
+ while (*flags) {
+ Channel_UserModeAdd(chan, target, *flags);
+ flags++;
+ }
+ }
+
+ /* If channel persistent and client is ircop: make client chanop */
+ if (strchr(Channel_Modes(chan), 'P') && strchr(Client_Modes(target), 'o'))
+ Channel_UserModeAdd(chan, target, 'o');
+}
+
+
+static void
+join_forward(CLIENT *Client, CLIENT *target, CHANNEL *chan,
+ const char *channame)
+{
+ char modes[8];
+
+ strlcpy(&modes[1], Channel_UserModes(chan, target), sizeof(modes) - 1);
+
+ if (modes[1])
+ modes[0] = 0x7;
+ else
+ modes[0] = '\0';
+ /* forward to other servers */
+ IRC_WriteStrServersPrefix(Client, target, "JOIN :%s%s", channame, modes);
+
+ /* tell users in this channel about the new client */
+ IRC_WriteStrChannelPrefix(Client, chan, target, false, "JOIN :%s", channame);
+ if (modes[1])
+ IRC_WriteStrChannelPrefix(Client, chan, target, false, "MODE %s +%s %s",
+ channame, &modes[1], Client_ID(target));
+}
+
+
+static bool
+join_send_topic(CLIENT *Client, CLIENT *target, CHANNEL *chan,
+ const char *channame)
+{
+ const char *topic;
+
+ if (Client_Type(Client) != CLIENT_USER)
+ return true;
+ /* acknowledge join */
+ if (!IRC_WriteStrClientPrefix(Client, target, "JOIN :%s", channame))
+ return false;
+
+ /* Send topic to client, if any */
+ topic = Channel_Topic(chan);
+ assert(topic != NULL);
+ if (*topic) {
+ if (!IRC_WriteStrClient(Client, RPL_TOPIC_MSG,
+ Client_ID(Client), channame, topic))
+ return false;
+#ifndef STRICT_RFC
+ if (!IRC_WriteStrClient(Client, RPL_TOPICSETBY_MSG,
+ Client_ID(Client), channame,
+ Channel_TopicWho(chan),
+ Channel_TopicTime(chan)))
+ return false;
+#endif
+ }
+ /* send list of channel members to client */
+ if (!IRC_Send_NAMES(Client, chan))
+ return false;
+ return IRC_WriteStrClient(Client, RPL_ENDOFNAMES_MSG, Client_ID(Client), Channel_Name(chan));
+}
+
+
GLOBAL bool
IRC_JOIN( CLIENT *Client, REQUEST *Req )
{
- char *channame, *key, *flags, *topic, modes[8];
- bool is_new_chan, is_invited, is_banned;
+ char *channame, *channame_ptr, *key, *key_ptr, *flags;
CLIENT *target;
CHANNEL *chan;
-
+
assert( Client != NULL );
assert( Req != NULL );
/* Bad number of arguments? */
- if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+ if (Req->argc < 1 || Req->argc > 2)
+ return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
+ Client_ID(Client), Req->command);
/* Who is the sender? */
- if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
- else target = Client;
- if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
+ if (Client_Type(Client) == CLIENT_SERVER)
+ target = Client_Search(Req->prefix);
+ else
+ target = Client;
- /* Are channel keys given? */
- if( Req->argc > 1 ) key = Req->argv[1];
- else key = NULL;
+ if (!target)
+ return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG, Client_ID(Client), Req->prefix);
- /* Channel-Namen durchgehen */
- chan = NULL;
- channame = strtok( Req->argv[0], "," );
- while( channame )
- {
- chan = NULL; flags = NULL;
+ /* Is argument "0"? */
+ if (Req->argc == 1 && !strncmp("0", Req->argv[0], 2))
+ return part_from_all_channels(Client, target);
- /* wird der Channel neu angelegt? */
- if( Channel_Search( channame )) is_new_chan = false;
- else is_new_chan = true;
+ /* Are channel keys given? */
+ if (Req->argc > 1) {
+ key = Req->argv[1];
+ key_ptr = strchr(key, ',');
+ if (key_ptr) *key_ptr = '\0';
+ } else {
+ key = key_ptr = NULL;
+ }
+ channame = Req->argv[0];
+ channame_ptr = strchr(channame, ',');
+ if (channame_ptr) *channame_ptr = '\0';
- /* Hat ein Server Channel-User-Modes uebergeben? */
- if( Client_Type( Client ) == CLIENT_SERVER )
- {
- /* Channel-Flags extrahieren */
- flags = strchr( channame, 0x7 );
- if( flags )
- {
+ while (channame) {
+ flags = NULL;
+
+ /* Did the server include channel-user-modes? */
+ if (Client_Type(Client) == CLIENT_SERVER) {
+ flags = strchr(channame, 0x7);
+ if (flags) {
*flags = '\0';
flags++;
}
}
+ chan = Channel_Search(channame);
+ if (!chan && Conf_PredefChannelsOnly) {
+ /* channel must be created, but server does not allow this */
+ IRC_WriteStrClient(Client, ERR_BANNEDFROMCHAN_MSG, Client_ID(Client), channame);
+ break;
+ }
+
/* Local client? */
- if( Client_Type( Client ) == CLIENT_USER )
- {
+ if (Client_Type(Client) == CLIENT_USER) {
/* Test if the user has reached his maximum channel count */
- if( Client_Type( Client ) == CLIENT_USER )
- {
- if(( Conf_MaxJoins > 0 ) && ( Channel_CountForUser( Client ) >= Conf_MaxJoins ))
- {
- IRC_WriteStrClient( Client, ERR_TOOMANYCHANNELS_MSG, Client_ID( Client ), channame );
- return CONNECTED;
- }
- }
-
- /* Existiert der Channel bereits, oder wird er im Moment neu erzeugt? */
- if( is_new_chan )
- {
- /* Erster User im Channel: Operator-Flag setzen */
+ if ((Conf_MaxJoins > 0) && (Channel_CountForUser(Client) >= Conf_MaxJoins))
+ return IRC_WriteStrClient(Client, ERR_TOOMANYCHANNELS_MSG,
+ Client_ID(Client), channame);
+ if (!chan) /* New Channel: first user will be channel operator */
flags = "o";
- }
else
- {
- /* Existierenden Channel suchen */
- chan = Channel_Search( channame );
- assert( chan != NULL );
-
- is_banned = Lists_CheckBanned( target, chan );
- is_invited = Lists_CheckInvited( target, chan );
-
- /* Testen, ob Client gebanned ist */
- if(( is_banned == true) && ( is_invited == false ))
- {
- /* Client ist gebanned (und nicht invited): */
- IRC_WriteStrClient( Client, ERR_BANNEDFROMCHAN_MSG, Client_ID( Client ), channame );
-
- /* Try next name, if any */
- channame = strtok( NULL, "," );
- continue;
- }
-
- /* Ist der Channel "invite-only"? */
- if(( strchr( Channel_Modes( chan ), 'i' )) && ( is_invited == false ))
- {
- /* Channel ist "invite-only" und Client wurde nicht invited: */
- IRC_WriteStrClient( Client, ERR_INVITEONLYCHAN_MSG, Client_ID( Client ), channame );
-
- /* Try next name, if any */
- channame = strtok( NULL, "," );
- continue;
- }
-
- /* Is the channel protected by a key? */
- if(( strchr( Channel_Modes( chan ), 'k' )) && ( strcmp( Channel_Key( chan ), key ? key : "" ) != 0 ))
- {
- /* Bad channel key! */
- IRC_WriteStrClient( Client, ERR_BADCHANNELKEY_MSG, Client_ID( Client ), channame );
-
- /* Try next name, if any */
- channame = strtok( NULL, "," );
- continue;
- }
-
- /* Are there already too many members? */
- if(( strchr( Channel_Modes( chan ), 'l' )) && ( Channel_MaxUsers( chan ) <= Channel_MemberCount( chan )))
- {
- /* Bad channel key! */
- IRC_WriteStrClient( Client, ERR_CHANNELISFULL_MSG, Client_ID( Client ), channame );
-
- /* Try next name, if any */
- channame = strtok( NULL, "," );
- continue;
- }
- }
- }
- else
- {
+ if (!join_allowed(Client, target, chan, channame, key))
+ break;
+ } else {
/* Remote server: we don't need to know whether the
* client is invited or not, but we have to make sure
* that the "one shot" entries (generated by INVITE
* commands) in this list become deleted when a user
* joins a channel this way. */
- chan = Channel_Search( channame );
- if( chan != NULL ) (void)Lists_CheckInvited( target, chan );
+ if (chan) (void)Lists_Check(Channel_GetListInvites(chan), target);
}
- /* Channel joinen (und ggf. anlegen) */
- if( ! Channel_Join( target, channame ))
- {
- /* naechsten Namen ermitteln */
- channame = strtok( NULL, "," );
- continue;
- }
- if( ! chan ) chan = Channel_Search( channame );
- assert( chan != NULL );
+ /* Join channel (and create channel if it doesn't exist) */
+ if (!Channel_Join(target, channame))
+ break;
- /* Modes setzen (wenn vorhanden) */
- while( flags && *flags )
- {
- Channel_UserModeAdd( chan, target, *flags );
- flags++;
- }
+ if (!chan) /* channel is new; it has been created above */
+ chan = Channel_Search(channame);
+ assert(chan != NULL);
- /* Wenn persistenter Channel und IRC-Operator: zum Channel-OP machen */
- if(( strchr( Channel_Modes( chan ), 'P' )) && ( strchr( Client_Modes( target ), 'o' ))) Channel_UserModeAdd( chan, target, 'o' );
+ join_set_channelmodes(chan, target, flags);
- /* Muessen Modes an andere Server gemeldet werden? */
- strlcpy( &modes[1], Channel_UserModes( chan, target ), sizeof( modes ) - 1 );
- if( modes[1] ) modes[0] = 0x7;
- else modes[0] = '\0';
+ join_forward(Client, target, chan, channame);
- /* An andere Server weiterleiten */
- IRC_WriteStrServersPrefix( Client, target, "JOIN :%s%s", channame, modes );
+ if (!join_send_topic(Client, target, chan, channame))
+ break; /* write error */
- /* im Channel bekannt machen */
- IRC_WriteStrChannelPrefix( Client, chan, target, false, "JOIN :%s", channame );
- if( modes[1] )
- {
- /* Modes im Channel bekannt machen */
- IRC_WriteStrChannelPrefix( Client, chan, target, false, "MODE %s +%s %s", channame, &modes[1], Client_ID( target ));
- }
+ /* next channel? */
+ channame = channame_ptr;
+ if (channame) {
+ channame++;
+ channame_ptr = strchr(channame, ',');
+ if (channame_ptr) *channame_ptr = '\0';
- if( Client_Type( Client ) == CLIENT_USER )
- {
- /* an Client bestaetigen */
- IRC_WriteStrClientPrefix( Client, target, "JOIN :%s", channame );
-
- /* Send topic to client, if any */
- topic = Channel_Topic(chan);
- if (*topic) {
- IRC_WriteStrClient(Client, RPL_TOPIC_MSG,
- Client_ID(Client), channame, topic);
-#ifndef STRICT_RFC
- IRC_WriteStrClient(Client, RPL_TOPICSETBY_MSG,
- Client_ID(Client), channame,
- Channel_TopicWho(chan),
- Channel_TopicTime(chan));
-#endif
+ if (key_ptr) {
+ key = ++key_ptr;
+ key_ptr = strchr(key, ',');
+ if (key_ptr) *key_ptr = '\0';
}
-
- /* Mitglieder an Client Melden */
- IRC_Send_NAMES( Client, chan );
- IRC_WriteStrClient( Client, RPL_ENDOFNAMES_MSG, Client_ID( Client ), Channel_Name( chan ));
}
-
- /* naechsten Namen ermitteln */
- channame = strtok( NULL, "," );
}
return CONNECTED;
} /* IRC_JOIN */
assert( Client != NULL );
assert( Req != NULL );
- /* Falsche Anzahl Parameter? */
- if(( Req->argc > 2 )) return IRC_WriteStrClient( Client, ERR_NEEDMOREPARAMS_MSG, Client_ID( Client ), Req->command );
+ if (Req->argc < 1 || Req->argc > 2)
+ return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
+ Client_ID(Client), Req->command);
/* Wer ist der Absender? */
if( Client_Type( Client ) == CLIENT_SERVER ) target = Client_Search( Req->prefix );
if( ! target ) return IRC_WriteStrClient( Client, ERR_NOSUCHNICK_MSG, Client_ID( Client ), Req->prefix );
/* Channel-Namen durchgehen */
- chan = strtok( Req->argv[0], "," );
- while( chan )
- {
- if( ! Channel_Part( target, Client, chan, Req->argc > 1 ? Req->argv[1] : Client_ID( target )))
- {
- /* naechsten Namen ermitteln */
- chan = strtok( NULL, "," );
- continue;
- }
+ chan = strtok(Req->argv[0], ",");
+ while (chan) {
+ Channel_Part(target, Client, chan, Req->argc > 1 ? Req->argv[1] : Client_ID(target));
- /* naechsten Namen ermitteln */
- chan = strtok( NULL, "," );
+ chan = strtok(NULL, ",");
}
return CONNECTED;
} /* IRC_PART */
{
if( *ptr == 'l' )
{
- snprintf( l, sizeof( l ), " %ld", Channel_MaxUsers( chan ));
+ snprintf( l, sizeof( l ), " %lu", Channel_MaxUsers( chan ));
strlcat( modes_add, l, sizeof( modes_add ));
}
if( *ptr == 'k' )
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