<?PHP
-
-//
-// ctdlsession.php
+// $Id$
//
// This gets called from within the header functions. It establishes or
// connects to a PHP session, and then connects to Citadel if necessary.
//
+// Web designers: please make changes in ctdlheader.php, not here.
+//
+// Copyright (c) 2003 by Art Cancro <ajc@uncensored.citadel.org>
+// This program is released under the terms of the GNU General Public License.
+
function establish_citadel_session() {
global $session, $clientsocket;
- // echo "Calling session_start()<BR>\n";
- // flush();
+ if (strcmp('4.3.0', phpversion()) > 0) {
+ die("This program requires PHP 4.3.0 or newer.");
+ }
+
+
session_start();
- $session = "CtdlSession." . session_id();
+
+ if (isset($_SESSION["ctdlsession"])) {
+ $session = $_SESSION["ctdlsession"];
+ }
+ else {
+ $session = "CtdlSession." . time() . rand(1000,9999) ;
+ $_SESSION["ctdlsession"] = $session;
+ }
// See if there's a Citadel connection proxy open for this session.
// The name of the socket is identical to the name of the
// session, and it's found in the /tmp directory.
$sockname = "/tmp/" . $session . ".socket" ;
-
- // echo "Connecting to ", $sockname, "...<BR>\n";
- // flush();
- $clientsocket = fsockopen($sockname, 0, $errno, $errstr, 5);
+ $errno = 0;
+ $errstr = "";
+ if (is_array(stat($sockname)))
+ $clientsocket = fsockopen(SOCKET_PREFIX.$sockname, 0, $errno, $errstr, 5);
+ else
+ $clientsocket = false;
+//// TODO: if we get connection refused...
+ echo "$socketname - $errno - $errstr";
+
if (!$clientsocket) {
- //echo "Socket not present. Firing up a new proxy.<BR>\n";
- //flush();
-
// It ain't there, dude. Open up the proxy. (C version)
//$cmd = "./sessionproxy " . $sockname ;
//exec($cmd);
// It ain't there, dude. Open up the proxy. (PHP version)
+ if (CITADEL_DEBUG_PROXY){
+ $stdout = '>>/tmp/sessionproxyout.txt ';
+ }
+ else{
+ $stdout = '>/dev/null ';
+ }
+
$cmd = "./sessionproxy.php " . $sockname .
- " </dev/null >/dev/null 2>&1 " .
+ " </dev/null ".$stdout."2>&1 " .
" 3>&1 4>&1 5>&1 6>&1 7>&1 8>&1 & " ;
exec($cmd);
- sleep(2);
-
- // Ok, now try again.
- // echo "Connecting to ", $sockname, "...<BR>\n";
- // flush();
- $clientsocket = fsockopen($sockname, 0, $errno, $errstr, 5);
+ sleep(1);
+
+ // Keep attempting connections 10 times per second up to 100 times
+ $attempts = 0;
+ while (!$clientsocket) {
+ usleep(100);
+ if (is_array(stat($sockname)))
+ $clientsocket = fsockopen(SOCKET_PREFIX.$sockname, 0, $errno, $errstr, 5);
+ else
+ $clientsocket = false;
+ $attempts += 1;
+ if ($attempts > 100) {
+ echo "ERROR: unable to start connection proxy. ";
+ echo "Please contact your system administrator.<BR>\n";
+ flush();
+ exit(1);
+ }
+ }
+
+ // At this point we have a good connection to Citadel.
+ $identity=array(
+ "DevelNr" => '0',
+ "ClientID" => '8',
+ "VersionNumber" => '001',
+ "ClientInfoString" => 'PHP web client|',
+ "Remote Address" => $_SERVER['REMOTE_ADDR'] );
+
+ ctdl_iden($identity); // Identify client
+ ctdl_MessageFormatsPrefered(array("text/html","text/plain"));
+ if (isset($_SESSION["username"])) {
+ login_existing_user(
+ $_SESSION["username"],
+ $_SESSION["password"]
+ );
+ }
+
+ if (isset($_SESSION["room"])) {
+ ctdl_goto($_SESSION["room"]);
+ }
+ else {
+ ctdl_goto("_BASEROOM_");
+ }
}
- if ($clientsocket) {
- /*
- echo "Connected. Performing echo tests.<BR>\n";
- flush();
- $cmd = "ECHO test echo string upon connection\n";
- fwrite($clientsocket, $cmd, strlen($cmd));
- $response = fgets($clientsocket, 4096);
- echo "Response is: ", $response, "<BR>\n";
- flush();
-
- $cmd = "ECHO second test for echo\n";
- fwrite($clientsocket, $cmd, strlen($cmd));
- $response = fgets($clientsocket, 4096);
- echo "Response is: ", $response, "<BR>\n";
- flush();
- */
+ if (!isset($_SESSION["serv_humannode"])) {
+ $server_info = ctdl_get_serv_info();
+ // print_r($server_info);
+ $keys = array_keys($server_info);
+ foreach ($keys as $key)
+ $_SESSION[$key] = $server_info[$key];
}
- else {
- echo "ERROR: no Citadel socket!<BR>\n";
- flush();
+
+ // If the user is trying to call up any page other than
+ // login.php logout.php do_login.php,
+ // and the session is not logged in, redirect to login.php
+ //
+ if (isset($_SESSION["logged_in"]) && ($_SESSION["logged_in"] != 1)) {
+ $filename = basename(getenv('SCRIPT_NAME'));
+ if ( (strcmp($filename, "login.php"))
+ && (strcmp($filename, "logout.php"))
+ && (strcmp($filename, "do_login.php"))
+ ) {
+ header("Location: login.php");
+ exit(0);
+ }
}
+
}
+//
+// Clear out both our Citadel session and our PHP session. We're done.
+//
function ctdl_end_session() {
global $clientsocket, $session;
- session_destroy();
+ // Tell the Citadel server to terminate our connection.
+ // (The extra newlines force it to see that the Citadel session
+ // ended, and the proxy will quit.)
+ //
+ fwrite($clientsocket, "QUIT\n\n\n\n\n\n\n\n\n\n\n");
+ $response = fgets($clientsocket, 4096); // IGnore response
+ fclose($clientsocket);
unset($clientsocket);
- unset($session);
- echo "Session destroyed.<BR>\n";
-
+ // Now clear our PHP session.
+ $_SESSION = array();
+ session_write_close();
}
?>
projects / citadel.git / blobdiff