* Please read the file COPYING, README and AUTHORS for more information.
*/
-
#define __client_c__
-
#include "portab.h"
/**
#include "ngircd.h"
#include "channel.h"
#include "conf.h"
+#include "conn-func.h"
#include "hash.h"
#include "irc-write.h"
#include "log.h"
#include <exp.h>
-
#define GETID_LEN (CLIENT_NICK_LEN-1) + 1 + (CLIENT_USER_LEN-1) + 1 + (CLIENT_HOST_LEN-1) + 1
-
static CLIENT *This_Server, *My_Clients;
static WHOWAS My_Whowas[MAX_WHOWAS];
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(Idx >= NONE);
assert(Introducer != NULL);
- assert(Hostname != NULL);
client = New_Client_Struct();
if (!client)
} /* Client_Destroy */
+/**
+ * Set client hostname.
+ *
+ * If global hostname cloaking is in effect, don't set the real hostname
+ * but the configured one.
+ *
+ * @param Client The client of which the hostname should be set.
+ * @param Hostname The new hostname.
+ */
GLOBAL void
Client_SetHostname( CLIENT *Client, const char *Hostname )
{
- assert( Client != NULL );
- assert( Hostname != NULL );
+ assert(Client != NULL);
+ assert(Hostname != NULL);
- strlcpy( Client->host, Hostname, sizeof( Client->host ));
+ if (strlen(Conf_CloakHost)) {
+ LogDebug("Updating hostname of \"%s\": \"%s\" -> \"%s\"",
+ Client_ID(Client), Client->host, Conf_CloakHost);
+ strlcpy(Client->host, Conf_CloakHost, sizeof(Client->host));
+ } else {
+ LogDebug("Updating hostname of \"%s\": \"%s\" -> \"%s\"",
+ Client_ID(Client), Client->host, Hostname);
+ strlcpy(Client->host, Hostname, sizeof(Client->host));
+ }
} /* Client_SetHostname */
strlcpy( Client->id, ID, sizeof( Client->id ));
+ if (Conf_CloakUserToNick) {
+ strlcpy( Client->user, ID, sizeof( Client->user ));
+ strlcpy( Client->info, ID, sizeof( Client->info ));
+ }
+
/* Hash */
Client->hash = Hash( Client->id );
} /* Client_SetID */
assert( Client != NULL );
assert( User != NULL );
- if (Idented) {
+ if (Conf_CloakUserToNick) {
+ strlcpy(Client->user, Client->id, sizeof(Client->user));
+ } else if (Idented) {
strlcpy(Client->user, User, sizeof(Client->user));
} else {
Client->user[0] = '~';
assert( Client != NULL );
assert( Info != NULL );
- strlcpy(Client->info, Info, sizeof(Client->info));
+ if (Conf_CloakUserToNick)
+ strlcpy(Client->info, Client->id, sizeof(Client->info));
+ else
+ strlcpy(Client->info, Info, sizeof(Client->info));
} /* Client_SetInfo */
* Return ID of a client: "client!user@host"
* 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 erlier results!
+ * nest invocations without overwriting earlier results!
* @param Client Pointer to client structure
* @return Pointer to global buffer containing the client ID
*/
* 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 erlier results!
+ * 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
return Client_Mask(Client);
snprintf(Mask_Buffer, GETID_LEN, "%s!%s@%s",
- Client->id, Client->user, Client_ID(Client->introducer));
+ Client->id, Client->user,
+ *Conf_CloakModeHost ? Conf_CloakModeHost : Client_ID(Client->introducer));
return Mask_Buffer;
} /* Client_MaskCloaked */
} /* Client_Away */
+/**
+ * Make sure that a given nickname is valid.
+ *
+ * If the nickname is not valid for the given client, this function sends back
+ * the appropriate error messages.
+ *
+ * @param Client Client that wants to change the nickname.
+ * @param Nick New nick name.
+ * @returns true if nickname is valid, false otherwise.
+ */
GLOBAL bool
-Client_CheckNick( CLIENT *Client, char *Nick )
+Client_CheckNick(CLIENT *Client, char *Nick)
{
- assert( Client != NULL );
- assert( Nick != NULL );
-
- if (! Client_IsValidNick( Nick ))
- {
- IRC_WriteStrClient( Client, ERR_ERRONEUSNICKNAME_MSG, Client_ID( Client ), Nick );
+ assert(Client != NULL);
+ assert(Nick != NULL);
+
+ if (!Client_IsValidNick(Nick)) {
+ if (strlen(Nick ) >= Conf_MaxNickLength)
+ IRC_WriteStrClient(Client, ERR_NICKNAMETOOLONG_MSG,
+ Client_ID(Client), Nick,
+ Conf_MaxNickLength - 1);
+ else
+ IRC_WriteStrClient(Client, ERR_ERRONEUSNICKNAME_MSG,
+ Client_ID(Client), Nick);
return false;
}
- /* Nick bereits vergeben? */
- if( Client_Search( Nick ))
- {
- /* den Nick gibt es bereits */
- IRC_WriteStrClient( Client, ERR_NICKNAMEINUSE_MSG, Client_ID( Client ), Nick );
+ /* Nickname already registered? */
+ if (Client_Search(Nick)) {
+ IRC_WriteStrClient(Client, ERR_NICKNAMEINUSE_MSG,
+ Client_ID(Client), Nick);
return false;
}
} /* Client_MyMaxUserCount */
+/**
+ * Check that a given nickname is valid.
+ *
+ * @param Nick the nickname to check.
+ * @returns true if nickname is valid, false otherwise.
+ */
GLOBAL bool
-Client_IsValidNick( const char *Nick )
+Client_IsValidNick(const char *Nick)
{
const char *ptr;
static const char goodchars[] = ";0123456789-";
- assert( Nick != NULL );
+ assert (Nick != NULL);
- if( Nick[0] == '#' ) return false;
- if( strchr( goodchars, Nick[0] )) return false;
- if( strlen( Nick ) >= Conf_MaxNickLength) return false;
+ if (strchr(goodchars, Nick[0]))
+ return false;
+ if (strlen(Nick ) >= Conf_MaxNickLength)
+ return false;
ptr = Nick;
- while( *ptr )
- {
- if (( *ptr < 'A' ) && ( ! strchr( goodchars, *ptr ))) return false;
- if ( *ptr > '}' ) return false;
+ while (*ptr) {
+ if (*ptr < 'A' && !strchr(goodchars, *ptr ))
+ return false;
+ if (*ptr > '}')
+ return false;
ptr++;
}
} /* Client_Uptime */
+/**
+ * Reject a client when logging in.
+ *
+ * This function is called when a client isn't allowed to connect to this
+ * server. Possible reasons are bad server password, bad PAM password,
+ * or that the client is G/K-Line'd.
+ *
+ * After calling this function, the client isn't connected any more.
+ *
+ * @param Client The client to reject.
+ * @param Reason The reason why the client has been rejected.
+ * @param InformClient If true, send the exact reason to the client.
+ */
+GLOBAL void
+Client_Reject(CLIENT *Client, const char *Reason, bool InformClient)
+{
+ char info[COMMAND_LEN];
+
+ assert(Client != NULL);
+ assert(Reason != NULL);
+
+ if (InformClient)
+ snprintf(info, sizeof(info), "Access denied: %s", Reason);
+ else
+ strcpy(info, "Access denied: Bad password?");
+
+ Log(LOG_ERR,
+ "User \"%s\" rejected (connection %d): %s!",
+ Client_Mask(Client), Client_Conn(Client), Reason);
+ Conn_Close(Client_Conn(Client), Reason, info, true);
+}
+
+
+/**
+ * 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_IsService(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 )
{
assert( Client != NULL );
+ /* Don't register WHOWAS information when "MorePrivacy" is enabled. */
+ if (Conf_MorePrivacy)
+ return;
+
now = time(NULL);
/* Don't register clients that were connected less than 30 seconds. */
if( now - Client->starttime < 30 )
} /* 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
projects / ngircd-alex.git / blobdiff