/**
* Handler for the IRC "MODE" command.
*
* This function detects whether user or channel modes should be modified
* and calls the appropriate sub-functions.
*
* @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_MODE( CLIENT *Client, REQUEST *Req )
{
CLIENT *cl, *origin;
CHANNEL *chan;
assert(Client != NULL);
assert(Req != NULL);
_IRC_GET_SENDER_OR_RETURN_(origin, Req, Client)
/* Test for "fake" MODE commands injected by this local instance,
* for example when handling the "DefaultUserModes" settings.
* This doesn't harm real commands, because prefixes of regular
* clients are checked in Validate_Prefix() and can't be faked. */
if (Req->prefix && Client_Search(Req->prefix) == Client_ThisServer())
Client = Client_Search(Req->prefix);
/* Channel or user mode? */
cl = NULL; chan = NULL;
if (Client_IsValidNick(Req->argv[0]))
cl = Client_Search(Req->argv[0]);
if (Channel_IsValidName(Req->argv[0]))
chan = Channel_Search(Req->argv[0]);
if (cl)
return Client_Mode(Client, Req, origin, cl);
if (chan)
return Channel_Mode(Client, Req, origin, chan);
/* No target found! */
return IRC_WriteErrClient(Client, ERR_NOSUCHNICK_MSG,
Client_ID(Client), Req->argv[0]);
} /* IRC_MODE */
/**
* 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 */
/**
* Handler for the IRC "MODE" command.
*
* See RFC 2812 section 3.1.5 ("user mode message") and section 3.2.3
* ("channel mode message"), and RFC 2811 section 4 ("channel modes").
*
* @param Client The client from which this command has been received.
* @param Req Request structure with prefix and all parameters.
* @returns CONNECTED or DISCONNECTED.
*/
GLOBAL bool
IRC_MODE( CLIENT *Client, REQUEST *Req )
{
CLIENT *cl, *origin;
CHANNEL *chan;
assert(Client != NULL);
assert(Req != NULL);
/* No parameters? */
if (Req->argc < 1)
return IRC_WriteStrClient(Client, ERR_NEEDMOREPARAMS_MSG,
Client_ID(Client), Req->command);
/* Origin for answers */
if (Client_Type(Client) == CLIENT_SERVER) {
origin = Client_Search(Req->prefix);
if (!origin)
return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
Client_ID(Client),
Req->prefix);
} else
origin = Client;
/* Channel or user mode? */
cl = NULL; chan = NULL;
if (Client_IsValidNick(Req->argv[0]))
cl = Client_Search(Req->argv[0]);
if (Channel_IsValidName(Req->argv[0]))
chan = Channel_Search(Req->argv[0]);
if (cl)
return Client_Mode(Client, Req, origin, cl);
if (chan)
return Channel_Mode(Client, Req, origin, chan);
/* No target found! */
return IRC_WriteStrClient(Client, ERR_NOSUCHNICK_MSG,
Client_ID(Client), Req->argv[0]);
} /* IRC_MODE */
/**
* 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 */
