/**
* Join Channel
* This function lets a client join a channel. First, the function
* checks that the specified channel name is valid and that the client
* isn't already a member. If the specified channel doesn't exist,
* a new channel is created. Client is added to channel by function
* Add_Client().
*/
GLOBAL bool
Channel_Join( CLIENT *Client, const char *Name )
{
CHANNEL *chan;
assert(Client != NULL);
assert(Name != NULL);
/* Check that the channel name is valid */
if (! Channel_IsValidName(Name)) {
IRC_WriteErrClient(Client, ERR_NOSUCHCHANNEL_MSG,
Client_ID(Client), Name);
return false;
}
chan = Channel_Search(Name);
if(chan) {
/* Check if the client is already in the channel */
if (Get_Cl2Chan(chan, Client))
return false;
} else {
/* If the specified channel does not exist, the channel
* is now created */
chan = Channel_Create(Name);
if (!chan)
return false;
}
/* Add user to Channel */
if (! Add_Client(chan, Client))
return false;
return true;
} /* Channel_Join */
/**
* Generate predefined persistent channels and &SERVER
*/
GLOBAL void
Channel_InitPredefined( void )
{
CHANNEL *new_chan;
const struct Conf_Channel *conf_chan;
const char *c;
size_t i, channel_count = array_length(&Conf_Channels, sizeof(*conf_chan));
conf_chan = array_start(&Conf_Channels);
assert(channel_count == 0 || conf_chan != NULL);
for (i = 0; i < channel_count; i++, conf_chan++) {
if (!conf_chan->name[0])
continue;
if (!Channel_IsValidName(conf_chan->name)) {
Log(LOG_ERR,
"Can't create pre-defined channel: invalid name: \"%s\"",
conf_chan->name);
continue;
}
new_chan = Channel_Search(conf_chan->name);
if (new_chan) {
Log(LOG_INFO,
"Can't create pre-defined channel \"%s\": name already in use.",
conf_chan->name);
Set_KeyFile(new_chan, conf_chan->keyfile);
continue;
}
new_chan = Channel_Create(conf_chan->name);
if (!new_chan) {
Log(LOG_ERR, "Can't create pre-defined channel \"%s\"!",
conf_chan->name);
continue;
}
Log(LOG_INFO, "Created pre-defined channel \"%s\".",
conf_chan->name);
Channel_ModeAdd(new_chan, 'P');
if (conf_chan->topic[0])
Channel_SetTopic(new_chan, NULL, conf_chan->topic);
c = conf_chan->modes;
while (*c)
Channel_ModeAdd(new_chan, *c++);
Channel_SetKey(new_chan, conf_chan->key);
Channel_SetMaxUsers(new_chan, conf_chan->maxusers);
Set_KeyFile(new_chan, conf_chan->keyfile);
}
if (channel_count)
array_free(&Conf_Channels);
/* Make sure the local &SERVER channel exists */
if (!Channel_Search("&SERVER")) {
new_chan = Channel_Create("&SERVER");
if (new_chan) {
Channel_SetModes(new_chan, "mnPt");
Channel_SetTopic(new_chan, Client_ThisServer(),
"Server Messages");
} else
Log(LOG_ERR, "Failed to create \"&SERVER\" channel!");
} else
LogDebug("Required channel \"&SERVER\" already exists, ok.");
} /* Channel_InitPredefined */
/**
* Handler for the IRC+ "CHANINFO" command.
*
* @param Client The client from which this command has been received.
* @param Req Request structure with prefix and all parameters.
* @return CONNECTED or DISCONNECTED.
*/
GLOBAL bool
IRC_CHANINFO( CLIENT *Client, REQUEST *Req )
{
char modes_add[COMMAND_LEN], l[16];
CLIENT *from;
CHANNEL *chan;
int arg_topic;
assert( Client != NULL );
assert( Req != NULL );
/* Bad number of parameters? */
if (Req->argc < 2 || Req->argc == 4 || Req->argc > 5)
return IRC_WriteErrClient(Client, ERR_NEEDMOREPARAMS_MSG,
Client_ID(Client), Req->command);
/* Compatibility kludge */
if (Req->argc == 5)
arg_topic = 4;
else if(Req->argc == 3)
arg_topic = 2;
else
arg_topic = -1;
_IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
/* Search or create channel */
chan = Channel_Search( Req->argv[0] );
if (!chan)
chan = Channel_Create( Req->argv[0] );
if (!chan)
return CONNECTED;
if (Req->argv[1][0] == '+') {
if (!*Channel_Modes(chan)) {
/* OK, this channel doesn't have modes yet,
* set the received ones: */
Channel_SetModes(chan, &Req->argv[1][1]);
if(Req->argc == 5) {
if(Channel_HasMode(chan, 'k'))
Channel_SetKey(chan, Req->argv[2]);
if(Channel_HasMode(chan, 'l'))
Channel_SetMaxUsers(chan, atol(Req->argv[3]));
} else {
/* Delete modes which we never want to inherit */
Channel_ModeDel(chan, 'l');
Channel_ModeDel(chan, 'k');
}
strcpy(modes_add, "");
if (Channel_HasMode(chan, 'l')) {
snprintf(l, sizeof(l), " %lu",
Channel_MaxUsers(chan));
strlcat(modes_add, l, sizeof(modes_add));
}
if (Channel_HasMode(chan, 'k')) {
strlcat(modes_add, " ", sizeof(modes_add));
strlcat(modes_add, Channel_Key(chan),
sizeof(modes_add));
}
/* Inform members of this channel */
IRC_WriteStrChannelPrefix(Client, chan, from, false,
"MODE %s +%s%s", Req->argv[0],
Channel_Modes(chan), modes_add);
}
}
else
Log(LOG_WARNING, "CHANINFO: invalid MODE format ignored!");
if (arg_topic > 0) {
/* We got a topic */
if (!*Channel_Topic(chan) && Req->argv[arg_topic][0]) {
/* OK, there is no topic jet */
Channel_SetTopic(chan, Client, Req->argv[arg_topic]);
IRC_WriteStrChannelPrefix(Client, chan, from, false,
"TOPIC %s :%s", Req->argv[0], Channel_Topic(chan));
}
}
/* Forward CHANINFO to other servers */
if (Req->argc == 5)
IRC_WriteStrServersPrefixFlag(Client, from, 'C',
"CHANINFO %s %s %s %s :%s",
Req->argv[0], Req->argv[1],
Req->argv[2], Req->argv[3],
Req->argv[4]);
else if (Req->argc == 3)
IRC_WriteStrServersPrefixFlag(Client, from, 'C',
"CHANINFO %s %s :%s",
Req->argv[0], Req->argv[1],
Req->argv[2]);
else
IRC_WriteStrServersPrefixFlag(Client, from, 'C',
"CHANINFO %s %s",
Req->argv[0], Req->argv[1]);
return CONNECTED;
} /* IRC_CHANINFO */
