New function Conn_GetIPAInfo(): get IP address of a connection

[ngircd-alex.git] / src / ngircd / irc-login.c

diff --git a/src/ngircd/irc-login.c b/src/ngircd/irc-login.c
index 0577cd9c0a94877532d7d594a2bb780e62c96598..54818fe4879f05d2d05f438cb3e98d646818641f 100644 (file)
--- a/src/ngircd/irc-login.c
+++ b/src/ngircd/irc-login.c
@@ -1,6 +1,6 @@
 /*
  * 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
@@ -27,6 +27,7 @@
 
 #include "ngircd.h"
 #include "conn-func.h"
+#include "class.h"
 #include "conf.h"
 #include "channel.h"
 #include "io.h"
@@ -46,7 +47,6 @@ 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));
@@ -944,10 +944,19 @@ Hello_User(CLIENT * Client)
                 * passwords supplied are classified as "wrong". */
                if(Client_Password(Client)[0] == '\0')
                        return Hello_User_PostAuth(Client);
-               Reject_Client(Client);
+               Client_Reject(Client, "Non-empty password", false);
                return DISCONNECTED;
        }
 
+       if (Conf_PAMIsOptional && strcmp(Client_Password(Client), "") == 0) {
+               /* Clients are not required to send a password and to be PAM-
+                * authenticated at all. If not, they won't become "identified"
+                * and keep the "~" in their supplied user name.
+                * Therefore it is sensible to either set Conf_PAMisOptional or
+                * to enable IDENT lookups -- not both. */
+               return Hello_User_PostAuth(Client);
+       }
+
        /* 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,
@@ -959,6 +968,7 @@ Hello_User(CLIENT * Client)
        } else {
                /* Sub process */
                Log_Init_Subprocess("Auth");
+               Conn_CloseAllSockets(NONE);
                result = PAM_Authenticate(Client);
                if (write(pipefd[1], &result, sizeof(result)) != sizeof(result))
                        Log_Subprocess(LOG_ERR,
@@ -970,7 +980,7 @@ Hello_User(CLIENT * Client)
        /* Check global server password ... */
        if (strcmp(Client_Password(Client), Conf_ServerPwd) != 0) {
                /* Bad password! */
-               Reject_Client(Client);
+               Client_Reject(Client, "Bad server password", false);
                return DISCONNECTED;
        }
        return Hello_User_PostAuth(Client);
@@ -1015,7 +1025,7 @@ cb_Read_Auth_Result(int r_fd, UNUSED short events)
 
        if (len != sizeof(result)) {
                Log(LOG_CRIT, "Auth: Got malformed result!");
-               Reject_Client(client);
+               Client_Reject(client, "Internal error", false);
                return;
        }
 
@@ -1023,31 +1033,12 @@ cb_Read_Auth_Result(int r_fd, UNUSED short events)
                Client_SetUser(client, Client_OrigUser(client), true);
                (void)Hello_User_PostAuth(client);
        } else
-               Reject_Client(client);
+               Client_Reject(client, "Bad password", false);
 }
 
 #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.
  *
@@ -1060,6 +1051,11 @@ Reject_Client(CLIENT *Client)
 static bool
 Hello_User_PostAuth(CLIENT *Client)
 {
+       assert(Client != NULL);
+
+       if (Class_HandleServerBans(Client) != CONNECTED)
+               return DISCONNECTED;
+
        Introduce_Client(NULL, Client, CLIENT_USER);
 
        if (!IRC_WriteStrClient