// server connection. We need one of these for each session because PHP does
// not have a way to bind a session to a persistent socket.
//
+// Web designers: don't touch this module. It's not included in your web pages
+// and therefore you don't need to be here.
+//
// Copyright (c) 2003 by Art Cancro <ajc@uncensored.citadel.org>
// This program is released under the terms of the GNU General Public License.
-//
// sock_gets() -- reads one line of text from a socket
system("/bin/rm -f " . $sockname);
$sock = socket_create(AF_UNIX, SOCK_STREAM, 0);
-if ($sock < 0) {
+if (!$sock) {
echo "socket_create() failed: ", socket_strerror($sock), "\n";
+ system("/bin/rm -f " . $sockname);
exit(2);
}
$ret = socket_bind($sock, $sockname);
-if ($ret < 0) {
+if (!$ret) {
echo "socket_bind() failed: ", socket_strerror($ret), "\n";
+ system("/bin/rm -f " . $sockname);
exit(3);
}
$ret = socket_listen($sock, 5);
-if ($ret < 0) {
+if (!$ret) {
echo "socket_listen() failed: ", socket_strerror($ret), "\n";
+ system("/bin/rm -f " . $sockname);
exit(4);
}
+// Set the permissions so someone else doesn't jump into our connection.
+chmod($sockname, 0600);
+
// We need to get a connection to the Citadel server going now.
$ctdlsock = fsockopen("uncensored.citadel.org", 504, $errno, $errstr, 30);
-// $ctdlsock = fsockopen("/appl/citadel/citadel.socket", 0, $errno, $errstr, 30);
+//$ctdlsock = fsockopen("/appl/citadel/citadel.socket", 0, $errno, $errstr, 30);
if (!$ctdlsock) {
socket_close ($sock);
system("/bin/rm -f " . $sockname);
exit(5);
}
-echo "Connected to Citadel server.\n";
-$buf = fgets($ctdlsock, 4096);
-echo $buf, "\n";
+// Read the greeting from the Citadel server.
+if (!$buf = fgets($ctdlsock, 4096)) {
+ socket_close ($sock);
+ system("/bin/rm -f " . $sockname);
+ exit(6);
+}
+
+// Make sure the server is allowing logins.
+if (substr($buf, 0, 1) != "2") {
+ socket_close ($sock);
+ system("/bin/rm -f " . $sockname);
+ exit(7);
+}
do {
- $msgsock = socket_accept($sock);
- if ($msgsock < 0) {
- echo "socket_accept() failed: ",
- socket_strerror($msgsock), "\n";
- break;
+ // Wait for connections, but time out after 15 minutes.
+ // socket_select() is completely b0rken in PHP 4.1, which is why
+ // this program requires PHP 4.3 or newer.
+ //
+ if (socket_select($readsock = array($sock),
+ $writesock = NULL,
+ $exceptsock = NULL,
+ 900, 0
+ ) == 0) {
+ // Timing out.
+ socket_close ($sock);
+ system("/bin/rm -f " . $sockname);
+ exit(8);
}
- do {
- echo "Reading a line...\n";
+ // Ok, there's a valid connection coming in. Accept it.
+ $msgsock = socket_accept($sock);
+ if ($msgsock >= 0) do {
$buf = sock_gets($msgsock);
if ($buf !== false) {
- fwrite($ctdlsock, $buf . "\n", (strlen($buf)+1) );
+ if (!fwrite($ctdlsock, $buf . "\n")) {
+ fclose($ctdlsock);
+ socket_close($sock);
+ system("/bin/rm -f " . $sockname);
+ exit(9);
+ }
$talkback = fgets($ctdlsock, 4096);
+ if (!$talkback) {
+ fclose($ctdlsock);
+ socket_close($sock);
+ system("/bin/rm -f " . $sockname);
+ exit(10);
+ }
socket_write($msgsock, $talkback, strlen($talkback));
+
+ if (substr($talkback, 0, 1) == "1") do {
+ $buf = fgets($ctdlsock, 4096);
+ if (!$buf) {
+ $buf = "000\n" ;
+ }
+ else {
+ socket_write($msgsock, $buf,
+ strlen($buf));
+ }
+ } while ($buf != "000\n");
+
}
} while($buf !== false);
- echo "Closing socket.\n";
-
socket_close ($msgsock);
} while (true);
-socket_close ($sock);
+socket_close($sock);
+fclose($ctdlsock);
system("/bin/rm -f " . $sockname);
exit(0);