// This program is released under the terms of the GNU General Public License.
//
// serv_gets() -- generic function to read one line of text from the server
//
function serv_gets() {
global $clientsocket;
$buf = fgets($clientsocket, 4096); // Read line
$buf = substr($buf, 0, (strlen($buf)-1) ); // strip trailing LF
return $buf;
}
//
// serv_puts() -- generic function to write one line of text to the server
//
function serv_puts($buf) {
global $clientsocket;
fwrite($clientsocket, $buf . "\n", (strlen($buf)+1) );
fflush($clientsocket);
}
//
// text_to_server() -- sends a block of text to the server. Assumes that
// the server just sent back a SEND_LISTING response code
// and is now expecting a 000-terminated series of lines.
// Set 'convert_to_html' to TRUE to convert the block of
// text to HTML along the way.
//
function text_to_server($thetext, $convert_to_html) {
// HTML mode
if ($convert_to_html) {
// Strip CR's; we only want the LF's
$thetext = trim($thetext, "\r");
// Replace hard line breaks with
's
$thetext = str_replace("\n", "
\n", $thetext);
}
// Either mode ... send it to the server now
$this_line = strtok($thetext, "\n");
while ($this_line !== FALSE) {
$this_line = trim($this_line, "\n\r");
if ($this_line == "000") $this_line = "-000" ;
serv_puts($this_line);
$this_line = strtok("\n");
}
serv_puts("000"); // Tell the server we're done...
serv_puts("ECHO echo test."); // FIXME
echo "Echo test: " . serv_gets() . "
\n" ;
}
//
// Identify ourselves to the Citadel server (do this once after connection)
//
function ctdl_iden() {
global $clientsocket;
// Identify client and hostname
serv_puts("IDEN 0|8|001|PHP web client|" . $_SERVER['REMOTE_ADDR'] );
$buf = serv_gets();
// Also express our message format preferences
serv_puts("MSGP text/html|text/plain");
$buf = serv_gets();
}
//
// login_existing_user() -- attempt to login using a supplied username/password
// Returns an array with two variables:
// 0. TRUE or FALSE to determine success or failure
// 1. String error message (if relevant)
//
function login_existing_user($user, $pass) {
global $clientsocket;
serv_puts("USER " . $user);
$resp = serv_gets();
if (substr($resp, 0, 1) != "3") {
return array(FALSE, substr($resp, 4));
}
serv_puts("PASS " . $pass);
$resp = serv_gets();
if (substr($resp, 0, 1) != "2") {
return array(FALSE, substr($resp, 4));
}
$_SESSION["username"] = $user;
$_SESSION["password"] = $pass;
become_logged_in(substr($resp, 4));
return array(TRUE, "Login successful. Have fun.");
}
//
// create_new_user() -- attempt to create a new user
// using a supplied username/password
// Returns an array with two variables:
// 0. TRUE or FALSE to determine success or failure
// 1. String error message (if relevant)
//
function create_new_user($user, $pass) {
global $clientsocket;
serv_puts("NEWU " . $user);
$resp = serv_gets();
if (substr($resp, 0, 1) != "2") {
return array(FALSE, substr($resp, 4));
}
serv_puts("SETP " . $pass);
$resp = serv_gets();
if (substr($resp, 0, 1) != "2") {
return array(FALSE, substr($resp, 4));
}
$_SESSION["username"] = $user;
$_SESSION["password"] = $pass;
become_logged_in(substr($resp, 4));
return array(TRUE, "Login successful. Have fun.");
}
//
// Code common to both existing-user and new-user logins
//
function become_logged_in($server_parms) {
$_SESSION["logged_in"] = 1;
$tok = strtok($server_parms, "|");
if ($tok) $thisline["username"] = $tok;
$tok = strtok("|");
if ($tok) $thisline["axlevel"] = $tok;
$tok = strtok("|");
if ($tok) $thisline["calls"] = $tok;
$tok = strtok("|");
if ($tok) $thisline["posts"] = $tok;
$tok = strtok("|");
if ($tok) $thisline["userflags"] = $tok;
$tok = strtok("|");
if ($tok) $thisline["usernum"] = $tok;
$tok = strtok("|");
if ($tok) $thisline["lastcall"] = $tok;
ctdl_goto("_BASEROOM_");
}
//
// Learn all sorts of interesting things about the Citadel server to
// which we are connected.
//
function ctdl_get_serv_info() {
serv_puts("INFO");
$buf = serv_gets();
if (substr($buf, 0, 1) == "1") {
$i = 0;
do {
$buf = serv_gets();
if ($i == 1) $_SESSION["serv_nodename"] = $buf;
if ($i == 2) $_SESSION["serv_humannode"] = $buf;
if ($i == 3) $_SESSION["serv_fqdn"] = $buf;
if ($i == 4) $_SESSION["serv_software"] = $buf;
if ($i == 6) $_SESSION["serv_city"] = $buf;
if ($i == 7) $_SESSION["serv_sysadmin"] = $buf;
$i = $i + 1;
} while (strcasecmp($buf, "000"));
}
}
//
// Display a system banner. (Returns completed HTML.)
// (This is probably temporary because it outputs more or less finalized
// markup. For now it's just usable.)
//
function ctdl_mesg($msgname) {
global $clientsocket;
$msgtext = "