/*
* ngIRCd -- The Next Generation IRC Daemon
- * Copyright (c)2001-2010 Alexander Barton (alex@barton.de)
+ * Copyright (c)2001-2011 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 "imp.h"
#include <assert.h>
-#include <stdio.h>
+#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
-#include <signal.h>
-#include <unistd.h>
-#include "ngircd.h"
#include "conn-func.h"
+#include "class.h"
#include "conf.h"
#include "channel.h"
-#include "io.h"
#include "log.h"
+#include "login.h"
#include "messages.h"
-#include "pam.h"
#include "parse.h"
#include "irc.h"
#include "irc-info.h"
#include "exp.h"
#include "irc-login.h"
-
-static bool Hello_User PARAMS(( CLIENT *Client ));
-static bool Hello_User_PostAuth PARAMS(( CLIENT *Client ));
static void Kill_Nick PARAMS(( char *Nick, char *Reason ));
-static void Introduce_Client PARAMS((CLIENT *To, CLIENT *Client, int Type));
-static void Reject_Client PARAMS((CLIENT *Client));
-
-static void cb_introduceClient PARAMS((CLIENT *Client, CLIENT *Prefix,
- void *i));
-
-#ifdef PAM
-static void cb_Read_Auth_Result PARAMS((int r_fd, UNUSED short events));
-#endif
/**
* Handler for the IRC "PASS" command.
Client_ID(Client));
}
- Client_SetPassword(Client, Req->argv[0]);
+ Conn_SetPassword(Client_Conn(Client), Req->argv[0]);
/* Protocol version */
if (Req->argc >= 2 && strlen(Req->argv[1]) >= 4) {
/* If we received a valid USER command already then
* register the new client! */
if( Client_Type( Client ) == CLIENT_GOTUSER )
- return Hello_User( Client );
+ return Login_User( Client );
else
Client_SetType( Client, CLIENT_GOTNICK );
} else {
Client_Mask(c));
Client_SetType(c, CLIENT_GOTNICK);
} else
- Introduce_Client(Client, c, CLIENT_USER);
+ Client_Introduce(Client, c, CLIENT_USER);
return CONNECTED;
}
IRC_USER(CLIENT * Client, REQUEST * Req)
{
CLIENT *c;
-#ifdef IDENTAUTH
char *ptr;
-#endif
assert(Client != NULL);
assert(Req != NULL);
Client_ID(Client),
Req->command);
- /* User name */
+ /* User name: only alphanumeric characters and limited
+ punctuation is allowed.*/
+ ptr = Req->argv[0];
+ while (*ptr) {
+ if (!isalnum(*ptr) &&
+ *ptr != '+' && *ptr != '-' &&
+ *ptr != '.' && *ptr != '_') {
+ Conn_Close(Client_Conn(Client), NULL,
+ "Invalid user name", true);
+ return DISCONNECTED;
+ }
+ ptr++;
+ }
+
#ifdef IDENTAUTH
ptr = Client_User(Client);
if (!ptr || !*ptr || *ptr == '~')
LogDebug("Connection %d: got valid USER command ...",
Client_Conn(Client));
if (Client_Type(Client) == CLIENT_GOTNICK)
- return Hello_User(Client);
+ return Login_User(Client);
else
Client_SetType(Client, CLIENT_GOTUSER);
return CONNECTED;
/* RFC 1459 style user registration?
* Introduce client to network: */
if (Client_Type(c) == CLIENT_GOTNICK)
- Introduce_Client(Client, c, CLIENT_USER);
+ Client_Introduce(Client, c, CLIENT_USER);
return CONNECTED;
} else if (Client_Type(Client) == CLIENT_USER) {
return CONNECTED;
}
- Introduce_Client(Client, c, CLIENT_SERVICE);
+ Client_Introduce(Client, c, CLIENT_SERVICE);
return CONNECTED;
} /* IRC_SERVICE */
if (auth_ping == atoi(Req->argv[0])) {
Conn_SetAuthPing(conn, 0);
if (Client_Type(Client) == CLIENT_WAITAUTHPING)
- Hello_User(Client);
+ Login_User(Client);
} else
if (!IRC_WriteStrClient(Client,
"To connect, type /QUOTE PONG %ld",
}
#endif
-#ifdef DEBUG
- if (conn > NONE)
- Log(LOG_DEBUG,
- "Connection %d: received PONG. Lag: %ld seconds.", conn,
- time(NULL) - Conn_LastPing(Client_Conn(Client)));
- else
- Log(LOG_DEBUG,
- "Connection %d: received PONG.", conn);
-#endif
- return CONNECTED;
-} /* IRC_PONG */
-
-
-/**
- * Initiate client registration.
- *
- * This function is called after the daemon received the required NICK and
- * USER commands of a new client. If the daemon is compiled with support for
- * PAM, the authentication sub-processs is forked; otherwise the global server
- * password is checked.
- *
- * @param Client The client logging in.
- * @returns CONNECTED or DISCONNECTED.
- */
-static bool
-Hello_User(CLIENT * Client)
-{
-#ifdef PAM
- int pipefd[2], result;
- pid_t pid;
-#endif
- CONN_ID conn;
-
- assert(Client != NULL);
- conn = Client_Conn(Client);
-
-#ifndef STRICT_RFC
- if (Conf_AuthPing) {
- /* Did we receive the "auth PONG" already? */
- if (Conn_GetAuthPing(conn)) {
- Client_SetType(Client, CLIENT_WAITAUTHPING);
- LogDebug("Connection %d: Waiting for AUTH PONG ...", conn);
- return CONNECTED;
- }
- }
-#endif
-
-#ifdef PAM
- if (!Conf_PAM) {
- /* Don't do any PAM authentication at all, instead emulate
- * the beahiour of the daemon compiled without PAM support:
- * because there can't be any "server password", all
- * passwords supplied are classified as "wrong". */
- if(Client_Password(Client)[0] == '\0')
- return Hello_User_PostAuth(Client);
- Reject_Client(Client);
- return DISCONNECTED;
- }
-
- /* Fork child process for PAM authentication; and make sure that the
- * process timeout is set higher than the login timeout! */
- pid = Proc_Fork(Conn_GetProcStat(conn), pipefd,
- cb_Read_Auth_Result, Conf_PongTimeout + 1);
- if (pid > 0) {
- LogDebug("Authenticator for connection %d created (PID %d).",
- conn, pid);
- return CONNECTED;
- } else {
- /* Sub process */
- Log_Init_Subprocess("Auth");
- result = PAM_Authenticate(Client);
- if (write(pipefd[1], &result, sizeof(result)) != sizeof(result))
- Log_Subprocess(LOG_ERR,
- "Failed to pipe result to parent!");
- Log_Exit_Subprocess("Auth");
- exit(0);
- }
-#else
- /* Check global server password ... */
- if (strcmp(Client_Password(Client), Conf_ServerPwd) != 0) {
- /* Bad password! */
- Reject_Client(Client);
- return DISCONNECTED;
- }
- return Hello_User_PostAuth(Client);
-#endif
-}
-
-
-#ifdef PAM
-
-/**
- * Read result of the authenticatior sub-process from pipe
- *
- * @param r_fd File descriptor of the pipe.
- * @param events (ignored IO specification)
- */
-static void
-cb_Read_Auth_Result(int r_fd, UNUSED short events)
-{
- CONN_ID conn;
- CLIENT *client;
- int result;
- size_t len;
- PROC_STAT *proc;
-
- LogDebug("Auth: Got callback on fd %d, events %d", r_fd, events);
- conn = Conn_GetFromProc(r_fd);
- if (conn == NONE) {
- /* Ops, none found? Probably the connection has already
- * been closed!? We'll ignore that ... */
- io_close(r_fd);
- LogDebug("Auth: Got callback for unknown connection!?");
- return;
- }
- proc = Conn_GetProcStat(conn);
- client = Conn_GetClient(conn);
-
- /* Read result from pipe */
- len = Proc_Read(proc, &result, sizeof(result));
- if (len == 0)
- return;
-
- if (len != sizeof(result)) {
- Log(LOG_CRIT, "Auth: Got malformed result!");
- Reject_Client(client);
- return;
- }
-
- if (result == true) {
- Client_SetUser(client, Client_OrigUser(client), true);
- (void)Hello_User_PostAuth(client);
+ if (Client_Type(Client) == CLIENT_SERVER && Conn_LastPing(conn) == 0) {
+ Log(LOG_INFO,
+ "Synchronization with \"%s\" done (connection %d): %ld seconds [%ld users, %ld channels]",
+ Client_ID(Client), conn, time(NULL) - Conn_GetSignon(conn),
+ Client_UserCount(), Channel_CountVisible(NULL));
+ Conn_UpdatePing(conn);
} else
- Reject_Client(client);
-}
-
-#endif
-
-
-/**
- * Reject a client because of wrong password.
- *
- * This function is called either when the global server password or a password
- * checked using PAM has been wrong.
- *
- * @param Client The client to reject.
- */
-static void
-Reject_Client(CLIENT *Client)
-{
- Log(LOG_ERR,
- "User \"%s\" rejected (connection %d): Access denied!",
- Client_Mask(Client), Client_Conn(Client));
- Conn_Close(Client_Conn(Client), NULL,
- "Access denied! Bad password?", true);
-}
-
-
-/**
- * Finish client registration.
- *
- * Introduce the new client to the network and send all "hello messages"
- * to it after authentication has been succeeded.
- *
- * @param Client The client logging in.
- * @returns CONNECTED or DISCONNECTED.
- */
-static bool
-Hello_User_PostAuth(CLIENT *Client)
-{
- Introduce_Client(NULL, Client, CLIENT_USER);
-
- if (!IRC_WriteStrClient
- (Client, RPL_WELCOME_MSG, Client_ID(Client), Client_Mask(Client)))
- return false;
- if (!IRC_WriteStrClient
- (Client, RPL_YOURHOST_MSG, Client_ID(Client),
- Client_ID(Client_ThisServer()), PACKAGE_VERSION, TARGET_CPU,
- TARGET_VENDOR, TARGET_OS))
- return false;
- if (!IRC_WriteStrClient
- (Client, RPL_CREATED_MSG, Client_ID(Client), NGIRCd_StartStr))
- return false;
- if (!IRC_WriteStrClient
- (Client, RPL_MYINFO_MSG, Client_ID(Client),
- Client_ID(Client_ThisServer()), PACKAGE_VERSION, USERMODES,
- CHANMODES))
- return false;
-
- /* Features supported by this server (005 numeric, ISUPPORT),
- * see <http://www.irc.org/tech_docs/005.html> for details. */
- if (!IRC_Send_ISUPPORT(Client))
- return DISCONNECTED;
-
- if (!IRC_Send_LUSERS(Client))
- return DISCONNECTED;
- if (!IRC_Show_MOTD(Client))
- return DISCONNECTED;
-
- /* Suspend the client for a second ... */
- IRC_SetPenalty(Client, 1);
+ LogDebug("Connection %d: received PONG. Lag: %ld seconds.",
+ conn, time(NULL) - Conn_LastPing(conn));
return CONNECTED;
-}
+} /* IRC_PONG */
/**
} /* Kill_Nick */
-/**
- * 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).
- */
-static void
-Introduce_Client(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);
-} /* Introduce_Client */
-
-
-/**
- * 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 */
-
-
/* -eof- */
projects / ngircd-alex.git / blobdiff