/*
* ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2012 Alexander Barton (alex@barton.de)
+ * Copyright (c)2001-2013 Alexander Barton (alex@barton.de) and Contributors.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#include "hash.h"
#include "irc-write.h"
#include "log.h"
+#include "match.h"
#include "messages.h"
#include <exp.h>
exit( 1 );
}
- /* Client-Struktur dieses Servers */
+ /* Client structure for this server */
This_Server->next = NULL;
This_Server->type = CLIENT_SERVER;
This_Server->conn_id = NONE;
if (Type == CLIENT_SERVER)
Generate_MyToken(client);
- if (strchr(client->modes, 'a'))
+ if (Client_HasMode(client, 'a'))
strlcpy(client->away, DEFAULT_AWAY_MSG, sizeof(client->away));
client->next = (POINTER *)My_Clients;
assert( Client != NULL );
- if( LogMsg ) txt = LogMsg;
- else txt = FwdMsg;
- if( ! txt ) txt = "Reason unknown.";
+ txt = LogMsg ? LogMsg : FwdMsg;
+ if (!txt)
+ txt = "Reason unknown";
/* netsplit message */
if( Client->type == CLIENT_SERVER ) {
Destroy_UserOrService(c, txt, FwdMsg, SendQuit);
else if( c->type == CLIENT_SERVER )
{
- if( c != This_Server )
- {
- if( c->conn_id != NONE ) Log( LOG_NOTICE|LOG_snotice, "Server \"%s\" unregistered (connection %d): %s", c->id, c->conn_id, txt );
- else Log( LOG_NOTICE|LOG_snotice, "Server \"%s\" unregistered: %s", c->id, txt );
+ if (c != This_Server) {
+ if (c->conn_id != NONE)
+ Log(LOG_NOTICE|LOG_snotice,
+ "Server \"%s\" unregistered (connection %d): %s.",
+ c->id, c->conn_id, txt);
+ else
+ Log(LOG_NOTICE|LOG_snotice,
+ "Server \"%s\" unregistered: %s.",
+ c->id, txt);
}
/* inform other servers */
}
else
{
- if( c->conn_id != NONE )
- {
- if( c->id[0] ) Log( LOG_NOTICE, "Client \"%s\" unregistered (connection %d): %s", c->id, c->conn_id, txt );
- else Log( LOG_NOTICE, "Client unregistered (connection %d): %s", c->conn_id, txt );
+ if (c->conn_id != NONE) {
+ if (c->id[0])
+ Log(LOG_NOTICE,
+ "Client \"%s\" unregistered (connection %d): %s.",
+ c->id, c->conn_id, txt);
+ else
+ Log(LOG_NOTICE,
+ "Client unregistered (connection %d): %s.",
+ c->conn_id, txt);
} else {
- Log(LOG_WARNING, "Unregistered unknown client \"%s\": %s",
- c->id[0] ? c->id : "(No Nick)", txt );
+ Log(LOG_WARNING,
+ "Unregistered unknown client \"%s\": %s",
+ c->id[0] ? c->id : "(No Nick)", txt);
}
}
+ if (c->cloaked)
+ free(c->cloaked);
free( c );
break;
}
Client_ModeAdd( CLIENT *Client, char Mode )
{
/* Set Mode.
- * If Client already alread had Mode, return false.
+ * If Client already had Mode, return false.
* If the Mode was newly set, return true.
*/
assert( Client != NULL );
x[0] = Mode; x[1] = '\0';
- if (!strchr( Client->modes, x[0])) {
+ if (!Client_HasMode(Client, x[0])) {
strlcat( Client->modes, x, sizeof( Client->modes ));
return true;
}
} /* Client_ModeDel */
+/**
+ * Search CLIENT structure of a given nick name.
+ *
+ * @return Pointer to CLIENT structure or NULL if not found.
+ */
GLOBAL CLIENT *
Client_Search( const char *Nick )
{
- /* return Client-Structure that has the corresponding Nick.
- * If none is found, return NULL.
- */
-
char search_id[CLIENT_ID_LEN], *ptr;
CLIENT *c = NULL;
UINT32 search_hash;
c = (CLIENT *)c->next;
}
return NULL;
-} /* Client_Search */
+}
+
+
+/**
+ * Search first CLIENT structure matching a given mask of a server.
+ *
+ * The order of servers is arbitrary, but this function makes sure that the
+ * local server is always returned if the mask matches it.
+ *
+ * @return Pointer to CLIENT structure or NULL if no server could be found.
+ */
+GLOBAL CLIENT *
+Client_SearchServer(const char *Mask)
+{
+ CLIENT *c;
+
+ assert(Mask != NULL);
+
+ /* First check if mask matches the local server */
+ if (MatchCaseInsensitive(Mask, Client_ID(Client_ThisServer())))
+ return Client_ThisServer();
+
+ c = My_Clients;
+ while (c) {
+ if (Client_Type(c) == CLIENT_SERVER) {
+ /* This is a server: check if Mask matches */
+ if (MatchCaseInsensitive(Mask, c->id))
+ return c;
+ }
+ c = (CLIENT *)c->next;
+ }
+ return NULL;
+}
/**
#endif
-
/**
* Return the hostname of a client.
* @param Client Pointer to client structure
{
assert (Client != NULL);
return Client->host;
-} /* Client_Hostname */
+}
+/**
+ * Return the cloaked hostname of a client, if set.
+ * @param Client Pointer to the client structure.
+ * @return Pointer to the cloaked hostname or NULL if not set.
+ */
+GLOBAL char *
+Client_HostnameCloaked(CLIENT *Client)
+{
+ assert(Client != NULL);
+ return Client->cloaked;
+}
/**
- * Get potentially cloaked hostname of a client.
+ * Get (potentially cloaked) hostname of a client to display it to other users.
*
* If the client has not enabled cloaking, the real hostname is used.
- * Please note that this function uses a global static buffer, so you can't
- * nest invocations without overwriting earlier results!
*
* @param Client Pointer to client structure
* @return Pointer to client hostname
*/
GLOBAL char *
-Client_HostnameCloaked(CLIENT *Client)
+Client_HostnameDisplayed(CLIENT *Client)
{
- static char Cloak_Buffer[CLIENT_HOST_LEN];
-
assert(Client != NULL);
+ /* Client isn't cloaked at all, return real hostname: */
if (!Client_HasMode(Client, 'x'))
return Client_Hostname(Client);
- /* Do simple mapping to the server ID? */
- if (!*Conf_CloakHostModeX)
- return Client_ID(Client->introducer);
+ /* Use an already saved cloaked hostname, if there is one */
+ if (Client->cloaked)
+ return Client->cloaked;
- strlcpy(Cloak_Buffer, Client->host, CLIENT_HOST_LEN);
- strlcat(Cloak_Buffer, Conf_CloakHostSalt, CLIENT_HOST_LEN);
+ Client_UpdateCloakedHostname(Client, NULL, NULL);
+ return Client->cloaked;
+}
- snprintf(Cloak_Buffer, CLIENT_HOST_LEN, Conf_CloakHostModeX,
- Hash(Cloak_Buffer));
+/**
+ * Update (and generate, if necessary) the cloaked hostname of a client.
+ *
+ * The newly set cloaked hostname is announced in the network using METADATA
+ * commands to peers that support this feature.
+ *
+ * @param Client The client of which the cloaked hostname should be updated.
+ * @param Origin The originator of the hostname change, or NULL if this server.
+ * @param Hostname The new cloaked hostname, or NULL if it should be generated.
+ */
+GLOBAL void
+Client_UpdateCloakedHostname(CLIENT *Client, CLIENT *Origin,
+ const char *Hostname)
+{
+ char Cloak_Buffer[CLIENT_HOST_LEN];
- return Cloak_Buffer;
-} /* Client_HostnameCloaked */
+ assert(Client != NULL);
+ if (!Origin)
+ Origin = Client_ThisServer();
+ if (!Client->cloaked) {
+ Client->cloaked = malloc(CLIENT_HOST_LEN);
+ if (!Client->cloaked)
+ return;
+ }
+
+ if (!Hostname) {
+ /* Generate new cloaked hostname */
+ if (*Conf_CloakHostModeX) {
+ strlcpy(Cloak_Buffer, Client->host,
+ sizeof(Cloak_Buffer));
+ strlcat(Cloak_Buffer, Conf_CloakHostSalt,
+ sizeof(Cloak_Buffer));
+ snprintf(Client->cloaked, CLIENT_HOST_LEN,
+ Conf_CloakHostModeX, Hash(Cloak_Buffer));
+ } else
+ strlcpy(Client->cloaked, Client_ID(Client->introducer),
+ CLIENT_HOST_LEN);
+ } else
+ strlcpy(Client->cloaked, Hostname, CLIENT_HOST_LEN);
+ LogDebug("Cloaked hostname of \"%s\" updated to \"%s\"",
+ Client_ID(Client), Client->cloaked);
+
+ /* Inform other servers in the network */
+ IRC_WriteStrServersPrefixFlag(Client_NextHop(Origin), Origin, 'M',
+ "METADATA %s cloakhost :%s",
+ Client_ID(Client), Client->cloaked);
+}
GLOBAL char *
Client_Modes( CLIENT *Client )
return Client_Mask(Client);
snprintf(Mask_Buffer, GETID_LEN, "%s!%s@%s", Client->id, Client->user,
- Client_HostnameCloaked(Client));
+ Client_HostnameDisplayed(Client));
return Mask_Buffer;
} /* Client_MaskCloaked */
} /* Client_HasMode */
+GLOBAL bool
+Client_HasFlag( CLIENT *Client, char Flag )
+{
+ assert( Client != NULL );
+ return strchr( Client->flags, Flag ) != NULL;
+} /* Client_HasFlag */
+
+
GLOBAL char *
Client_Away( CLIENT *Client )
{
* the appropriate error messages.
*
* @param Client Client that wants to change the nickname.
- * @param Nick New nick name.
+ * @param Nick New nickname.
* @returns true if nickname is valid, false otherwise.
*/
GLOBAL bool
if (!Client_IsValidNick(Nick)) {
if (strlen(Nick ) >= Conf_MaxNickLength)
- IRC_WriteStrClient(Client, ERR_NICKNAMETOOLONG_MSG,
+ IRC_WriteErrClient(Client, ERR_NICKNAMETOOLONG_MSG,
Client_ID(Client), Nick,
Conf_MaxNickLength - 1);
else
- IRC_WriteStrClient(Client, ERR_ERRONEUSNICKNAME_MSG,
+ IRC_WriteErrClient(Client, ERR_ERRONEUSNICKNAME_MSG,
Client_ID(Client), Nick);
return false;
}
if (Client_Type(Client) != CLIENT_SERVER
&& Client_Type(Client) != CLIENT_SERVICE) {
- /* Make sure that this isn't a restricted/forbidden nick name */
+ /* Make sure that this isn't a restricted/forbidden nickname */
if (Conf_NickIsBlocked(Nick)) {
- IRC_WriteStrClient(Client, ERR_FORBIDDENNICKNAME_MSG,
+ IRC_WriteErrClient(Client, ERR_FORBIDDENNICKNAME_MSG,
Client_ID(Client), Nick);
return false;
}
/* Nickname already registered? */
if (Client_Search(Nick)) {
- IRC_WriteStrClient(Client, ERR_NICKNAMEINUSE_MSG,
+ IRC_WriteErrClient(Client, ERR_NICKNAMEINUSE_MSG,
Client_ID(Client), Nick);
return false;
}
/* ID too long? */
if (strlen(ID) > CLIENT_ID_LEN) {
- IRC_WriteStrClient(Client, ERR_ERRONEUSNICKNAME_MSG, Client_ID(Client), ID);
+ IRC_WriteErrClient(Client, ERR_ERRONEUSNICKNAME_MSG,
+ Client_ID(Client), ID);
return false;
}
c = My_Clients;
while( c )
{
- if( c && ( c->type == CLIENT_USER ) && ( strchr( c->modes, 'o' ))) cnt++;
+ if (c && c->type == CLIENT_USER && Client_HasMode(c, 'o' ))
+ cnt++;
c = (CLIENT *)c->next;
}
return cnt;
static CLIENT *
New_Client_Struct( void )
{
- /* Neue CLIENT-Struktur pre-initialisieren */
-
CLIENT *c;
c = (CLIENT *)malloc( sizeof( CLIENT ));
{
if( c->mytoken == token )
{
- /* Das Token wurde bereits vergeben */
+ /* The token is already in use */
token++;
c = My_Clients;
continue;
sizeof( My_Whowas[slot].id ));
strlcpy( My_Whowas[slot].user, Client_User( Client ),
sizeof( My_Whowas[slot].user ));
- strlcpy( My_Whowas[slot].host, Client_HostnameCloaked( Client ),
+ strlcpy( My_Whowas[slot].host, Client_HostnameDisplayed( Client ),
sizeof( My_Whowas[slot].host ));
strlcpy( My_Whowas[slot].info, Client_Info( Client ),
sizeof( My_Whowas[slot].info ));
if(Client->conn_id != NONE) {
/* Local (directly connected) client */
Log(LOG_NOTICE,
- "%s \"%s\" unregistered (connection %d): %s",
+ "%s \"%s\" unregistered (connection %d): %s.",
Client_TypeText(Client), Client_Mask(Client),
Client->conn_id, Txt);
Log_ServerNotice('c', "Client exiting: %s (%s@%s) [%s]",
}
} else {
/* Remote client */
- LogDebug("%s \"%s\" unregistered: %s",
+ LogDebug("%s \"%s\" unregistered: %s.",
Client_TypeText(Client), Client_Mask(Client), Txt);
if(SendQuit) {
/**
* Introduce a new user or service client to a remote server.
*
- * This function differentiates between RFC1459 and RFC2813 server links and
- * generates the appropriate commands to register the new user or service.
- *
* @param To The remote server to inform.
* @param Prefix Prefix for the generated commands.
* @param data CLIENT structure of the new client.
cb_introduceClient(CLIENT *To, CLIENT *Prefix, void *data)
{
CLIENT *c = (CLIENT *)data;
+
+ (void)Client_Announce(To, Prefix, c);
+
+} /* cb_introduceClient */
+
+
+/**
+ * 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(c);
- user = Client_User(c) ? Client_User(c) : "-";
- host = Client_Hostname(c) ? Client_Hostname(c) : "-";
+ modes = Client_Modes(User);
+ user = Client_User(User) ? Client_User(User) : "-";
+ host = Client_Hostname(User) ? Client_Hostname(User) : "-";
- conn = Client_Conn(To);
+ conn = Client_Conn(Client);
if (Conn_Options(conn) & CONN_RFC1459) {
/* RFC 1459 mode: separate NICK and USER commands */
- Conn_WriteStr(conn, "NICK %s :%d", Client_ID(c),
- Client_Hops(c) + 1);
- Conn_WriteStr(conn, ":%s USER %s %s %s :%s",
- Client_ID(c), user, host,
- Client_ID(Client_Introducer(c)), Client_Info(c));
- if (modes[0])
- Conn_WriteStr(conn, ":%s MODE %s +%s",
- Client_ID(c), Client_ID(c), modes);
+ 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(c) == CLIENT_SERVICE
- && strchr(Client_Flags(To), 'S'))
- IRC_WriteStrClientPrefix(To, Prefix,
- "SERVICE %s %d * +%s %d :%s",
- Client_Mask(c),
- Client_MyToken(Client_Introducer(c)),
- Client_Modes(c), Client_Hops(c) + 1,
- Client_Info(c));
- else
- IRC_WriteStrClientPrefix(To, Prefix,
- "NICK %s %d %s %s %d +%s :%s",
- Client_ID(c), Client_Hops(c) + 1,
- user, host,
- Client_MyToken(Client_Introducer(c)),
- modes, Client_Info(c));
+ 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;
+ }
}
-} /* cb_introduceClient */
+
+ 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 (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 */
#ifdef DEBUG
projects / ngircd-alex.git / blobdiff