/*
* ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2010 Alexander Barton (alex@barton.de)
+ * Copyright (c)2001-2014 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
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* Please read the file COPYING, README and AUTHORS for more information.
- *
- * Client management.
*/
-
#define __client_c__
-
#include "portab.h"
-#include "imp.h"
+/**
+ * @file
+ * Client management.
+ */
+
#include <assert.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
+#include <time.h>
#include <netdb.h>
-#include "defines.h"
#include "conn.h"
-
-#include "exp.h"
-#include "client.h"
-
-#include <imp.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 "match.h"
#include "messages.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 Generate_MyToken PARAMS(( CLIENT *Client ));
static void Adjust_Counters PARAMS(( CLIENT *Client ));
+static void Free_Client PARAMS(( CLIENT **Client ));
+
static CLIENT *Init_New_Client PARAMS((CONN_ID Idx, CLIENT *Introducer,
CLIENT *TopServer, int Type, const char *ID,
const char *User, const char *Hostname, const char *Info,
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 )
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;
This_Server->hops = 0;
gethostname( This_Server->host, CLIENT_HOST_LEN );
- if (!Conf_NoDNS) {
+ if (Conf_DNS) {
h = gethostbyname( This_Server->host );
if (h) strlcpy(This_Server->host, h->h_name, sizeof(This_Server->host));
}
cnt = 0;
c = My_Clients;
- while( c )
- {
+ while(c) {
cnt++;
next = (CLIENT *)c->next;
- free( c );
+ Free_Client(&c);
c = next;
}
- if( cnt ) Log( LOG_INFO, "Freed %d client structure%s.", cnt, cnt == 1 ? "" : "s" );
+ if (cnt)
+ Log(LOG_INFO, "Freed %d client structure%s.",
+ cnt, cnt == 1 ? "" : "s");
} /* Client_Exit */
assert(Idx >= NONE);
assert(Introducer != NULL);
- assert(Hostname != NULL);
client = New_Client_Struct();
if (!client)
if (Type == CLIENT_SERVER)
Generate_MyToken(client);
- if (strchr(client->modes, 'a'))
- strlcpy(client->away, DEFAULT_AWAY_MSG, sizeof(client->away));
+ if (Client_HasMode(client, 'a'))
+ client->away = strndup(DEFAULT_AWAY_MSG, CLIENT_AWAY_LEN - 1);
client->next = (POINTER *)My_Clients;
My_Clients = client;
/* remove a client */
CLIENT *last, *c;
- char msg[LINE_LEN];
+ char msg[COMMAND_LEN];
const char *txt;
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);
}
}
- free( c );
+ Free_Client(&c);
break;
}
last = c;
} /* 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);
+
+ if (Conf_CloakHost[0]) {
+ char cloak[GETID_LEN];
+
+ strlcpy(cloak, Hostname, GETID_LEN);
+ strlcat(cloak, Conf_CloakHostSalt, GETID_LEN);
+ snprintf(cloak, GETID_LEN, Conf_CloakHost, Hash(cloak));
- strlcpy( Client->host, Hostname, sizeof( Client->host ));
+ LogDebug("Updating hostname of \"%s\": \"%s\" -> \"%s\"",
+ 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);
+ strlcpy(Client->host, Hostname, sizeof(Client->host));
+ }
} /* Client_SetHostname */
+/**
+ * Set IP address to display for a client.
+ *
+ * @param Client The client.
+ * @param IPAText Textual representation of the IP address or NULL to unset.
+ */
+GLOBAL void
+Client_SetIPAText(CLIENT *Client, const char *IPAText)
+{
+ assert(Client != NULL);
+
+ if (Client->ipa_text)
+ free(Client->ipa_text);
+
+ if (*IPAText)
+ Client->ipa_text = strndup(IPAText, CLIENT_HOST_LEN - 1);
+ else
+ Client->ipa_text = NULL;
+}
+
+
GLOBAL void
Client_SetID( CLIENT *Client, const char *ID )
{
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] = '~';
* @param User User name to set.
*/
GLOBAL void
-Client_SetOrigUser(CLIENT *Client, const char *User) {
+Client_SetOrigUser(CLIENT UNUSED *Client, const char UNUSED *User)
+{
assert(Client != NULL);
assert(User != NULL);
-#if defined(PAM) && defined(IDENTAUTH)
+#if defined(PAM)
strlcpy(Client->orig_user, User, sizeof(Client->orig_user));
#endif
} /* Client_SetOrigUser */
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 */
GLOBAL void
-Client_SetPassword( CLIENT *Client, const char *Pwd )
+Client_SetAccountName(CLIENT *Client, const char *AccountName)
{
- /* set password sent by client */
+ assert(Client != NULL);
- assert( Client != NULL );
- assert( Pwd != NULL );
+ if (Client->account_name)
+ free(Client->account_name);
- strlcpy(Client->pwd, Pwd, sizeof(Client->pwd));
-} /* Client_SetPassword */
+ if (*AccountName)
+ Client->account_name = strndup(AccountName,
+ CLIENT_NICK_LEN - 1);
+ else
+ Client->account_name = NULL;
+}
GLOBAL void
assert( Client != NULL );
assert( Txt != NULL );
- strlcpy( Client->away, Txt, sizeof( Client->away ));
+ if (Client->away)
+ free(Client->away);
+
+ Client->away = strndup(Txt, CLIENT_AWAY_LEN - 1);
+
LogDebug("%s \"%s\" is away: %s", Client_TypeText(Client),
Client_Mask(Client), Txt);
} /* Client_SetAway */
} /* Client_SetIntroducer */
-GLOBAL void
-Client_SetOperByMe( CLIENT *Client, bool OperByMe )
-{
- assert( Client != NULL );
- Client->oper_by_me = OperByMe;
-} /* Client_SetOperByMe */
-
-
GLOBAL bool
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_GetFromToken( CLIENT *Client, int Token )
+Client_SearchServer(const char *Mask)
{
- /* Client-Struktur, die den entsprechenden Introducer (=Client)
- * und das gegebene Token hat, liefern. Wird keine gefunden,
- * so wird NULL geliefert. */
+ 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;
+}
+
+/**
+ * Get client structure ("introducer") identfied by a server token.
+ * @return CLIENT structure or NULL if none could be found.
+ */
+GLOBAL CLIENT *
+Client_GetFromToken( CLIENT *Client, int Token )
+{
CLIENT *c;
assert( Client != NULL );
- assert( Token > 0 );
+
+ if (!Token)
+ return NULL;
c = My_Clients;
while (c) {
*/
GLOBAL char *
Client_OrigUser(CLIENT *Client) {
-#ifndef IDENTAUTH
- char *user = Client->user;
-
- if (user[0] == '~')
- user++;
- return user;
-#else
return Client->orig_user;
-#endif
} /* Client_OrigUser */
#endif
-
+/**
+ * Return the hostname of a client.
+ * @param Client Pointer to client structure
+ * @return Pointer to client hostname
+ */
GLOBAL char *
-Client_Hostname( CLIENT *Client )
+Client_Hostname(CLIENT *Client)
{
- assert( Client != NULL );
+ 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 to display it to other users.
+ *
+ * If the client has not enabled cloaking, the real hostname is used.
+ *
+ * @param Client Pointer to client structure
+ * @return Pointer to client hostname
+ */
GLOBAL char *
-Client_Password( CLIENT *Client )
+Client_HostnameDisplayed(CLIENT *Client)
{
- assert( Client != NULL );
- return Client->pwd;
-} /* Client_Password */
+ assert(Client != NULL);
+
+ /* Client isn't cloaked at all, return real hostname: */
+ if (!Client_HasMode(Client, 'x'))
+ return Client_Hostname(Client);
+
+ /* Use an already saved cloaked hostname, if there is one */
+ if (Client->cloaked)
+ return Client->cloaked;
+
+ Client_UpdateCloakedHostname(Client, NULL, NULL);
+ return Client->cloaked;
+}
+GLOBAL const char *
+Client_IPAText(CLIENT *Client)
+{
+ assert(Client != NULL);
+
+ /* Not a local client? */
+ if (Client_Conn(Client) <= NONE)
+ return "0.0.0.0";
+
+ if (!Client->ipa_text)
+ return Conn_GetIPAInfo(Client_Conn(Client));
+ else
+ return Client->ipa_text;
+}
+
+/**
+ * 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];
+
+ 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 )
} /* Client_Flags */
-GLOBAL bool
-Client_OperByMe( CLIENT *Client )
-{
- assert( Client != NULL );
- return Client->oper_by_me;
-} /* Client_OperByMe */
-
-
GLOBAL int
Client_Hops( CLIENT *Client )
{
/**
- * return Client-ID ("client!user@host"), this ID is needed for e.g.
- * prefixes. Returnes pointer to static buffer.
+ * 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 earlier results!
+ * @param Client Pointer to client structure
+ * @return Pointer to global buffer containing the client ID
*/
GLOBAL char *
Client_Mask( CLIENT *Client )
{
- static char GetID_Buffer[GETID_LEN];
+ static char Mask_Buffer[GETID_LEN];
- assert( Client != NULL );
+ assert (Client != NULL);
- if( Client->type == CLIENT_SERVER ) return Client->id;
+ /* Servers: return name only, there is no "mask" */
+ if (Client->type == CLIENT_SERVER)
+ return Client->id;
- snprintf(GetID_Buffer, GETID_LEN, "%s!%s@%s", Client->id, Client->user, Client->host);
- return GetID_Buffer;
+ snprintf(Mask_Buffer, GETID_LEN, "%s!%s@%s",
+ Client->id, Client->user, Client->host);
+ return Mask_Buffer;
} /* Client_Mask */
+/**
+ * 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
+ */
+GLOBAL char *
+Client_MaskCloaked(CLIENT *Client)
+{
+ static char Mask_Buffer[GETID_LEN];
+
+ assert (Client != NULL);
+
+ /* Is the client using cloaking at all? */
+ if (!Client_HasMode(Client, 'x'))
+ return Client_Mask(Client);
+
+ snprintf(Mask_Buffer, GETID_LEN, "%s!%s@%s", Client->id, Client->user,
+ Client_HostnameDisplayed(Client));
+
+ return Mask_Buffer;
+} /* Client_MaskCloaked */
+
+
GLOBAL CLIENT *
Client_Introducer( CLIENT *Client )
{
} /* 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 )
{
} /* Client_Away */
-GLOBAL bool
-Client_CheckNick( CLIENT *Client, char *Nick )
+GLOBAL char *
+Client_AccountName(CLIENT *Client)
{
- assert( Client != NULL );
- assert( Nick != NULL );
+ assert(Client != NULL);
+ return Client->account_name;
+}
- if (! Client_IsValidNick( Nick ))
- {
- IRC_WriteStrClient( Client, ERR_ERRONEUSNICKNAME_MSG, Client_ID( Client ), Nick );
+
+/**
+ * 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 nickname.
+ * @returns true if nickname is valid, false otherwise.
+ */
+GLOBAL bool
+Client_CheckNick(CLIENT *Client, char *Nick)
+{
+ assert(Client != NULL);
+ assert(Nick != NULL);
+
+ if (!Client_IsValidNick(Nick)) {
+ if (strlen(Nick ) >= Conf_MaxNickLength)
+ IRC_WriteErrClient(Client, ERR_NICKNAMETOOLONG_MSG,
+ Client_ID(Client), Nick,
+ Conf_MaxNickLength - 1);
+ else
+ IRC_WriteErrClient(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 );
+ 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_WriteErrClient(Client, ERR_FORBIDDENNICKNAME_MSG,
+ Client_ID(Client), Nick);
+ return false;
+ }
+ }
+
+ /* Nickname already registered? */
+ if (Client_Search(Nick)) {
+ 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;
} /* 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_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 )
{
} /* MyCount */
+/**
+ * Allocate and initialize new CLIENT strcuture.
+ *
+ * @return Pointer to CLIENT structure or NULL on error.
+ */
static CLIENT *
New_Client_Struct( void )
{
- /* Neue CLIENT-Struktur pre-initialisieren */
-
CLIENT *c;
c = (CLIENT *)malloc( sizeof( CLIENT ));
c->type = CLIENT_UNKNOWN;
c->conn_id = NONE;
- c->oper_by_me = false;
c->hops = -1;
c->token = -1;
c->mytoken = -1;
return c;
-} /* New_Client */
+}
+/**
+ * Free a CLIENT structure and its member variables.
+ */
+static void
+Free_Client(CLIENT **Client)
+{
+ assert(Client != NULL);
+ assert(*Client != NULL);
+
+ if ((*Client)->account_name)
+ free((*Client)->account_name);
+ if ((*Client)->away)
+ free((*Client)->away);
+ if ((*Client)->cloaked)
+ free((*Client)->cloaked);
+ if ((*Client)->ipa_text)
+ free((*Client)->ipa_text);
+
+ free(*Client);
+ *Client = NULL;
+}
static void
Generate_MyToken( CLIENT *Client )
{
if( c->mytoken == token )
{
- /* Das Token wurde bereits vergeben */
+ /* The token is already in use */
token++;
c = My_Clients;
continue;
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 )
sizeof( My_Whowas[slot].id ));
strlcpy( My_Whowas[slot].user, Client_User( Client ),
sizeof( My_Whowas[slot].user ));
- strlcpy( My_Whowas[slot].host, Client_Hostname( 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) {
} /* Destroy_UserOrService */
+/**
+ * Introduce a new user or service client to a remote server.
+ *
+ * @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;
+
+ (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(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 */
+
+
+#ifdef DEBUG
+
+GLOBAL void
+Client_DebugDump(void)
+{
+ CLIENT *c;
+
+ Log(LOG_DEBUG, "Client status:");
+ c = My_Clients;
+ while (c) {
+ Log(LOG_DEBUG,
+ " - %s: type=%d, host=%s, user=%s, conn=%d, start=%ld, flags=%s",
+ Client_ID(c), Client_Type(c), Client_Hostname(c),
+ Client_User(c), Client_Conn(c), Client_StartTime(c),
+ Client_Flags(c));
+ c = (CLIENT *)c->next;
+ }
+} /* Client_DumpClients */
+
+#endif
+
+
/* -eof- */
projects / ngircd-alex.git / blobdiff