/*
* ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2010 Alexander Barton (alex@barton.de)
+ * Copyright (c)2001-2012 Alexander Barton (alex@barton.de)
*
* 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 "ngircd.h"
#include "channel.h"
#include "conf.h"
+#include "conn-func.h"
#include "hash.h"
#include "irc-write.h"
#include "log.h"
static void Destroy_UserOrService PARAMS((CLIENT *Client,const char *Txt, const char *FwdMsg,
bool SendQuit));
+static void cb_introduceClient PARAMS((CLIENT *Client, CLIENT *Prefix,
+ void *i));
GLOBAL void
Client_Init( void )
assert(Hostname != NULL);
if (strlen(Conf_CloakHost)) {
+ char cloak[GETID_LEN];
+
+ strlcpy(cloak, Hostname, GETID_LEN);
+ strlcat(cloak, Conf_CloakHostSalt, GETID_LEN);
+ snprintf(cloak, GETID_LEN, Conf_CloakHost, Hash(cloak));
+
LogDebug("Updating hostname of \"%s\": \"%s\" -> \"%s\"",
- Client_ID(Client), Client->host, Conf_CloakHost);
- strlcpy(Client->host, Conf_CloakHost, sizeof(Client->host));
+ Client_ID(Client), Client->host, cloak);
+ strlcpy(Client->host, cloak, sizeof(Client->host));
} else {
LogDebug("Updating hostname of \"%s\": \"%s\" -> \"%s\"",
Client_ID(Client), Client->host, Hostname);
} /* Client_SetFlags */
-GLOBAL void
-Client_SetPassword( CLIENT *Client, const char *Pwd )
-{
- /* set password sent by client */
-
- assert( Client != NULL );
- assert( Pwd != NULL );
-
- strlcpy(Client->pwd, Pwd, sizeof(Client->pwd));
-} /* Client_SetPassword */
-
-
GLOBAL void
Client_SetAway( CLIENT *Client, const char *Txt )
{
#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)
{
assert(Client != NULL);
- if (Client_HasMode(Client, 'x'))
- return Client_ID(Client->introducer);
- else
+
+ /* Client isn't cloaked at all, return real hostname: */
+ if (!Client_HasMode(Client, 'x'))
return Client_Hostname(Client);
-} /* Client_HostnameCloaked */
+ /* Use an already saved cloaked hostname, if there is one */
+ if (Client->cloaked[0])
+ return Client->cloaked;
-GLOBAL char *
-Client_Password( CLIENT *Client )
+ Client_UpdateCloakedHostname(Client, NULL, NULL);
+ return Client->cloaked;
+}
+
+/**
+ * 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)
{
- assert( Client != NULL );
- return Client->pwd;
-} /* Client_Password */
+ static char Cloak_Buffer[CLIENT_HOST_LEN];
+ assert(Client != NULL);
+ if (!Origin)
+ Origin = Client_ThisServer();
+
+ if (!Hostname) {
+ /* Generate new cloaked hostname */
+ if (*Conf_CloakHostModeX) {
+ strlcpy(Cloak_Buffer, Client->host, CLIENT_HOST_LEN);
+ strlcat(Cloak_Buffer, Conf_CloakHostSalt,
+ CLIENT_HOST_LEN);
+ snprintf(Client->cloaked, sizeof(Client->cloaked),
+ Conf_CloakHostModeX, Hash(Cloak_Buffer));
+ } else
+ strlcpy(Client->cloaked, Client_ID(Client->introducer),
+ sizeof(Client->cloaked));
+ } else
+ strlcpy(Client->cloaked, Hostname, sizeof(Client->cloaked));
+ 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 ID of a client with cloaked hostname: "client!user@server-name"
+ *
* This client ID is used for IRC prefixes, for example.
* Please note that this function uses a global static buffer, so you can't
* nest invocations without overwriting earlier results!
* If the client has not enabled cloaking, the real hostname is used.
+ *
* @param Client Pointer to client structure
* @return Pointer to global buffer containing the client ID
*/
/* Is the client using cloaking at all? */
if (!Client_HasMode(Client, 'x'))
- return Client_Mask(Client);
+ return Client_Mask(Client);
+
+ snprintf(Mask_Buffer, GETID_LEN, "%s!%s@%s", Client->id, Client->user,
+ Client_HostnameDisplayed(Client));
- snprintf(Mask_Buffer, GETID_LEN, "%s!%s@%s",
- Client->id, Client->user, Client_ID(Client->introducer));
return Mask_Buffer;
} /* Client_MaskCloaked */
* 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
return false;
}
+ if (Client_Type(Client) != CLIENT_SERVER
+ && Client_Type(Client) != CLIENT_SERVICE) {
+ /* Make sure that this isn't a restricted/forbidden nickname */
+ if (Conf_NickIsBlocked(Nick)) {
+ IRC_WriteStrClient(Client, ERR_FORBIDDENNICKNAME_MSG,
+ Client_ID(Client), Nick);
+ return false;
+ }
+ }
+
/* Nickname already registered? */
if (Client_Search(Nick)) {
IRC_WriteStrClient(Client, ERR_NICKNAMEINUSE_MSG,
}
+/**
+ * Introduce a new user or service client in the network.
+ *
+ * @param From Remote server introducing the client or NULL (local).
+ * @param Client New client.
+ * @param Type Type of the client (CLIENT_USER or CLIENT_SERVICE).
+ */
+GLOBAL void
+Client_Introduce(CLIENT *From, CLIENT *Client, int Type)
+{
+ /* Set client type (user or service) */
+ Client_SetType(Client, Type);
+
+ if (From) {
+ if (Conf_NickIsService(Conf_GetServer(Client_Conn(From)),
+ Client_ID(Client)))
+ Client_SetType(Client, CLIENT_SERVICE);
+ LogDebug("%s \"%s\" (+%s) registered (via %s, on %s, %d hop%s).",
+ Client_TypeText(Client), Client_Mask(Client),
+ Client_Modes(Client), Client_ID(From),
+ Client_ID(Client_Introducer(Client)),
+ Client_Hops(Client), Client_Hops(Client) > 1 ? "s": "");
+ } else {
+ Log(LOG_NOTICE, "%s \"%s\" registered (connection %d).",
+ Client_TypeText(Client), Client_Mask(Client),
+ Client_Conn(Client));
+ Log_ServerNotice('c', "Client connecting: %s (%s@%s) [%s] - %s",
+ Client_ID(Client), Client_User(Client),
+ Client_Hostname(Client),
+ Conn_IPA(Client_Conn(Client)),
+ Client_TypeText(Client));
+ }
+
+ /* Inform other servers */
+ IRC_WriteStrServersPrefixFlag_CB(From,
+ From != NULL ? From : Client_ThisServer(),
+ '\0', cb_introduceClient, (void *)Client);
+} /* Client_Introduce */
+
+
static unsigned long
Count( CLIENT_TYPE Type )
{
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 ));
} /* Destroy_UserOrService */
+/**
+ * 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.
+ */
+static void
+cb_introduceClient(CLIENT *To, CLIENT *Prefix, void *data)
+{
+ CLIENT *c = (CLIENT *)data;
+ 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) : "-";
+
+ conn = Client_Conn(To);
+ 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);
+ } 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));
+ }
+} /* cb_introduceClient */
+
+
#ifdef DEBUG
GLOBAL void