/**
* Announce a channel and its users in the network.
*/
static bool
Announce_Channel(CLIENT *Client, CHANNEL *Chan)
{
CL2CHAN *cl2chan;
CLIENT *cl;
char str[COMMAND_LEN], *ptr;
bool njoin, xop;
/* Check features of remote server */
njoin = Conn_Options(Client_Conn(Client)) & CONN_RFC1459 ? false : true;
xop = Client_HasFlag(Client, 'X') ? true : false;
/* 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);
if (njoin) {
/* RFC 2813: send NJOIN with nicknames and modes
* (if user is channel operator or has voice) */
if (str[strlen(str) - 1] != ':')
strlcat(str, ",", sizeof(str));
/* Prepare user prefix (ChanOp, voiced, ...) */
if (xop && Channel_UserHasMode(Chan, cl, 'q'))
strlcat(str, "~", sizeof(str));
if (xop && Channel_UserHasMode(Chan, cl, 'a'))
strlcat(str, "&", sizeof(str));
if (Channel_UserHasMode(Chan, cl, 'o'))
strlcat(str, "@", sizeof(str));
if (xop && Channel_UserHasMode(Chan, cl, 'h'))
strlcat(str, "%", sizeof(str));
if (Channel_UserHasMode(Chan, cl, 'v'))
strlcat(str, "+", sizeof(str));
strlcat(str, Client_ID(cl), sizeof(str));
/* Send the data if the buffer is "full" */
if (strlen(str) > (sizeof(str) - CLIENT_NICK_LEN - 8)) {
if (!IRC_WriteStrClient(Client, "%s", str))
return DISCONNECTED;
snprintf(str, sizeof(str), "NJOIN %s :",
Channel_Name(Chan));
}
} else {
/* RFC 1459: no NJOIN, send JOIN and MODE */
if (!IRC_WriteStrClientPrefix(Client, cl, "JOIN %s",
Channel_Name(Chan)))
return DISCONNECTED;
ptr = Channel_UserModes(Chan, cl);
while (*ptr) {
if (!IRC_WriteStrClientPrefix(Client, cl,
"MODE %s +%c %s",
Channel_Name(Chan), ptr[0],
Client_ID(cl)))
return DISCONNECTED;
ptr++;
}
}
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;
}
return CONNECTED;
} /* Announce_Channel */
/**
* Announce an user or service to a server.
*
* This function differentiates between RFC1459 and RFC2813 server links and
* generates the appropriate commands to register the user or service.
*
* @param Client Server
* @param Prefix Prefix for the generated commands
* @param User User to announce
*/
GLOBAL bool
Client_Announce(CLIENT * Client, CLIENT * Prefix, CLIENT * User)
{
CONN_ID conn;
char *modes, *user, *host;
modes = Client_Modes(User);
user = Client_User(User) ? Client_User(User) : "-";
host = Client_Hostname(User) ? Client_Hostname(User) : "-";
conn = Client_Conn(Client);
if (Conn_Options(conn) & CONN_RFC1459) {
/* RFC 1459 mode: separate NICK and USER commands */
if (! Conn_WriteStr(conn, "NICK %s :%d",
Client_ID(User), Client_Hops(User) + 1))
return DISCONNECTED;
if (! Conn_WriteStr(conn, ":%s USER %s %s %s :%s",
Client_ID(User), user, host,
Client_ID(Client_Introducer(User)),
Client_Info(User)))
return DISCONNECTED;
if (modes[0]) {
if (! Conn_WriteStr(conn, ":%s MODE %s +%s",
Client_ID(User), Client_ID(User),
modes))
return DISCONNECTED;
}
} else {
/* RFC 2813 mode: one combined NICK or SERVICE command */
if (Client_Type(User) == CLIENT_SERVICE
&& Client_HasFlag(Client, 'S')) {
if (!IRC_WriteStrClientPrefix(Client, Prefix,
"SERVICE %s %d * +%s %d :%s",
Client_Mask(User),
Client_MyToken(Client_Introducer(User)),
modes, Client_Hops(User) + 1,
Client_Info(User)))
return DISCONNECTED;
} else {
if (!IRC_WriteStrClientPrefix(Client, Prefix,
"NICK %s %d %s %s %d +%s :%s",
Client_ID(User), Client_Hops(User) + 1,
user, host,
Client_MyToken(Client_Introducer(User)),
modes, Client_Info(User)))
return DISCONNECTED;
}
}
if (Client_HasFlag(Client, 'M')) {
/* Synchronize metadata */
if (Client_HostnameCloaked(User)) {
if (!IRC_WriteStrClientPrefix(Client, Prefix,
"METADATA %s cloakhost :%s",
Client_ID(User),
Client_HostnameCloaked(User)))
return DISCONNECTED;
}
if (Client_AccountName(User)) {
if (!IRC_WriteStrClientPrefix(Client, Prefix,
"METADATA %s accountname :%s",
Client_ID(User),
Client_AccountName(User)))
return DISCONNECTED;
}
if (Conn_GetCertFp(Client_Conn(User))) {
if (!IRC_WriteStrClientPrefix(Client, Prefix,
"METADATA %s certfp :%s",
Client_ID(User),
Conn_GetCertFp(Client_Conn(User))))
return DISCONNECTED;
}
}
return CONNECTED;
} /* Client_Announce */
/**
* 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)
{
int max_hops, i;
CLIENT *c;
CHANNEL *chan;
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 ||
Client_Type(c) == CLIENT_SERVICE) {
if (!Client_Announce(Client, Client_ThisServer(), c))
return DISCONNECTED;
}
c = Client_Next(c);
}
/* Announce all channels to the new server */
chan = Channel_First();
while (chan) {
if (Channel_IsLocal(chan)) {
chan = Channel_Next(chan);
continue;
}
#ifdef IRCPLUS
/* Send CHANINFO if the peer supports it */
if (Client_HasFlag(Client, 'C')) {
if (!Send_CHANINFO(Client, chan))
return DISCONNECTED;
}
#endif
if (!Announce_Channel(Client, chan))
return DISCONNECTED;
/* Get next channel ... */
chan = Channel_Next(chan);
}
#ifdef IRCPLUS
if (Client_HasFlag(Client, 'L')) {
LogDebug("Synchronizing INVITE- and BAN-lists ...");
if (!Synchronize_Lists(Client))
return DISCONNECTED;
}
#endif
if (!IRC_WriteStrClient(Client, "PING :%s",
Client_ID(Client_ThisServer())))
return DISCONNECTED;
return CONNECTED;
} /* IRC_Num_ENDOFMOTD */
