4 // This gets called from within the header functions. It establishes or
5 // connects to a PHP session, and then connects to Citadel if necessary.
7 // Web designers: please make changes in ctdlheader.php, not here.
9 // Copyright (c) 2003 by Art Cancro <ajc@uncensored.citadel.org>
10 // This program is released under the terms of the GNU General Public License.
13 function establish_citadel_session() {
15 global $session, $clientsocket;
17 if (strcmp('4.3.0', phpversion()) > 0) {
18 die("This program requires PHP 4.3.0 or newer.");
24 if (isset($_SESSION["ctdlsession"])) {
25 $session = $_SESSION["ctdlsession"];
28 $session = "CtdlSession." . time() . rand(1000,9999) ;
29 $_SESSION["ctdlsession"] = $session;
32 // See if there's a Citadel connection proxy open for this session.
33 // The name of the socket is identical to the name of the
34 // session, and it's found in the /tmp directory.
36 $sockname = "/tmp/" . $session . ".socket" ;
38 if (is_array(stat($sockname)))
39 $clientsocket = fsockopen(SOCKET_PREFIX.$sockname, 0, $errno, $errstr, 5);
41 $clientsocket = false;
43 // It ain't there, dude. Open up the proxy. (C version)
44 //$cmd = "./sessionproxy " . $sockname ;
47 // It ain't there, dude. Open up the proxy. (PHP version)
48 if (CITADEL_DEBUG_PROXY){
49 $stdout = '>>/tmp/sessionproxyout.txt ';
52 $stdout = '>/dev/null ';
55 $cmd = "./sessionproxy.php " . $sockname .
56 " </dev/null ".$stdout."2>&1 " .
57 " 3>&1 4>&1 5>&1 6>&1 7>&1 8>&1 & " ;
61 // Keep attempting connections 10 times per second up to 100 times
63 while (!$clientsocket) {
65 if (is_array(stat($sockname)))
66 $clientsocket = fsockopen(SOCKET_PREFIX.$sockname, 0, $errno, $errstr, 5);
68 $clientsocket = false;
70 if ($attempts > 100) {
71 echo "ERROR: unable to start connection proxy. ";
72 echo "Please contact your system administrator.<BR>\n";
78 // At this point we have a good connection to Citadel.
82 "VersionNumber" => '001',
83 "ClientInfoString" => 'PHP web client|',
84 "Remote Address" => $_SERVER['REMOTE_ADDR'] );
86 ctdl_iden($identity); // Identify client
87 ctdl_MessageFormatsPrefered(array("text/html","text/plain"));
88 if (isset($_SESSION["username"])) {
90 $_SESSION["username"],
95 if (isset($_SESSION["room"])) {
96 ctdl_goto($_SESSION["room"]);
99 ctdl_goto("_BASEROOM_");
103 if (!isset($_SESSION["serv_humannode"])) {
104 $server_info = ctdl_get_serv_info();
105 // print_r($server_info);
106 $keys = array_keys($server_info);
107 foreach ($keys as $key)
108 $_SESSION[$key] = $server_info[$key];
111 // If the user is trying to call up any page other than
112 // login.php logout.php do_login.php,
113 // and the session is not logged in, redirect to login.php
115 if (isset($_SESSION["logged_in"]) && ($_SESSION["logged_in"] != 1)) {
116 $filename = basename(getenv('SCRIPT_NAME'));
117 if ( (strcmp($filename, "login.php"))
118 && (strcmp($filename, "logout.php"))
119 && (strcmp($filename, "do_login.php"))
121 header("Location: login.php");
131 // Clear out both our Citadel session and our PHP session. We're done.
133 function ctdl_end_session() {
134 global $clientsocket, $session;
136 // Tell the Citadel server to terminate our connection.
137 // (The extra newlines force it to see that the Citadel session
138 // ended, and the proxy will quit.)
140 fwrite($clientsocket, "QUIT\n\n\n\n\n\n\n\n\n\n\n");
141 $response = fgets($clientsocket, 4096); // IGnore response
142 fclose($clientsocket);
143 unset($clientsocket);
145 // Now clear our PHP session.
147 session_write_close();