/**
* Acknowledge user JOIN request and send "channel info" numerics.
*
* @param Client Client used to prefix the genrated commands
* @param target Forward commands/numerics to this user
* @param chan Channel structure
* @param channame Channel name
*/
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));
} /* join_send_topic */
/**
* 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 for \"%s\" ...",
Channel_Name(Chan));
#endif
modes = Channel_Modes(Chan);
topic = Channel_Topic(Chan);
if (!*modes && !*topic)
return CONNECTED;
has_k = Channel_HasMode(Chan, 'k');
has_l = Channel_HasMode(Chan, 'l');
/* 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 */
/**
* 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 */
/**
* Handler for the IRC "LIST" 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_LIST( CLIENT *Client, REQUEST *Req )
{
char *pattern;
CHANNEL *chan;
CLIENT *from, *target;
int count = 0;
assert(Client != NULL);
assert(Req != NULL);
_IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
if (Req->argc > 0)
pattern = strtok(Req->argv[0], ",");
else
pattern = "*";
if (Req->argc == 2) {
/* Forward to other server? */
target = Client_Search(Req->argv[1]);
if (! target || Client_Type(target) != CLIENT_SERVER)
return IRC_WriteErrClient(from, ERR_NOSUCHSERVER_MSG,
Client_ID(Client),
Req->argv[1]);
if (target != Client_ThisServer()) {
/* Target is indeed an other server, forward it! */
return IRC_WriteStrClientPrefix(target, from,
"LIST %s :%s",
Req->argv[0],
Req->argv[1]);
}
}
while (pattern) {
/* Loop through all the channels */
if (Req->argc > 0)
ngt_LowerStr(pattern);
chan = Channel_First();
while (chan) {
/* Check search pattern */
if (MatchCaseInsensitive(pattern, Channel_Name(chan))) {
/* Gotcha! */
if (!Channel_HasMode(chan, 's')
|| Channel_IsMemberOf(chan, from)
|| (!Conf_MorePrivacy
&& Client_HasMode(Client, 'o')
&& Client_Conn(Client) > NONE))
{
if ((Conf_MaxListSize > 0)
&& IRC_CheckListTooBig(from, count,
Conf_MaxListSize,
"LIST"))
break;
if (!IRC_WriteStrClient(from,
RPL_LIST_MSG, Client_ID(from),
Channel_Name(chan),
Channel_MemberCount(chan),
Channel_Topic( chan )))
return DISCONNECTED;
count++;
}
}
chan = Channel_Next(chan);
}
/* Get next name ... */
if(Req->argc > 0)
pattern = strtok(NULL, ",");
else
pattern = NULL;
}
return IRC_WriteStrClient(from, RPL_LISTEND_MSG, Client_ID(from));
} /* IRC_LIST */
/**
* Handler for the IRC "TOPIC" 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_TOPIC( CLIENT *Client, REQUEST *Req )
{
CHANNEL *chan;
CLIENT *from;
char *topic;
bool r, topic_power;
assert( Client != NULL );
assert( Req != NULL );
_IRC_GET_SENDER_OR_RETURN_(from, Req, Client)
chan = Channel_Search(Req->argv[0]);
if (!chan)
return IRC_WriteErrClient(from, ERR_NOSUCHCHANNEL_MSG,
Client_ID(from), Req->argv[0]);
/* Only remote servers and channel members are allowed to change the
* channel topic, and IRC operators when the Conf_OperCanMode option
* is set in the server configuration. */
if (Client_Type(Client) != CLIENT_SERVER) {
topic_power = Client_HasMode(from, 'o');
if (!Channel_IsMemberOf(chan, from)
&& !(Conf_OperCanMode && topic_power))
return IRC_WriteErrClient(from, ERR_NOTONCHANNEL_MSG,
Client_ID(from), Req->argv[0]);
} else
topic_power = true;
if (Req->argc == 1) {
/* Request actual topic */
topic = Channel_Topic(chan);
if (*topic) {
r = IRC_WriteStrClient(from, RPL_TOPIC_MSG,
Client_ID(Client),
Channel_Name(chan), topic);
#ifndef STRICT_RFC
if (!r)
return r;
r = IRC_WriteStrClient(from, RPL_TOPICSETBY_MSG,
Client_ID(Client),
Channel_Name(chan),
Channel_TopicWho(chan),
Channel_TopicTime(chan));
#endif
return r;
}
else
return IRC_WriteStrClient(from, RPL_NOTOPIC_MSG,
Client_ID(from),
Channel_Name(chan));
}
if (Channel_HasMode(chan, 't')) {
/* Topic Lock. Is the user a channel op or IRC operator? */
if(!topic_power &&
!Channel_UserHasMode(chan, from, 'h') &&
!Channel_UserHasMode(chan, from, 'o') &&
!Channel_UserHasMode(chan, from, 'a') &&
!Channel_UserHasMode(chan, from, 'q'))
return IRC_WriteErrClient(from, ERR_CHANOPRIVSNEEDED_MSG,
Client_ID(from),
Channel_Name(chan));
}
/* Set new topic */
Channel_SetTopic(chan, from, Req->argv[1]);
LogDebug("%s \"%s\" set topic on \"%s\": %s",
Client_TypeText(from), Client_Mask(from), Channel_Name(chan),
Req->argv[1][0] ? Req->argv[1] : "<none>");
if (Conf_OperServerMode)
from = Client_ThisServer();
/* Update channel and forward new topic to other servers */
if (!Channel_IsLocal(chan))
IRC_WriteStrServersPrefix(Client, from, "TOPIC %s :%s",
Req->argv[0], Req->argv[1]);
IRC_WriteStrChannelPrefix(Client, chan, from, false, "TOPIC %s :%s",
Req->argv[0], Req->argv[1]);
if (Client_Type(Client) == CLIENT_USER)
return IRC_WriteStrClientPrefix(Client, Client, "TOPIC %s :%s",
Req->argv[0], Req->argv[1]);
else
return CONNECTED;
} /* IRC_TOPIC */
