Here's an outline of the technique: I wrote a quick-and-dirty XML-RPC class designed to make fetching and editing friends, groups, and entries easier. Then, I threw a hidden image into a post whose src attribute referred it back to this PHP script. There, the PHP script instantiated the XML-RPC class, logged into my LJ account, and updated my entry with the relevant data. Cool, eh?
<?php
class LJXMLRPC {
var $if = null;
var $user = null, $password = null;
var $userid = null;
var $fullname = null;
var $friendgroups = null;
var $fastserver = null;
var $usejournals = null;
function LJXMLRPC($user = null, $password = null) {
require_once("XML/RPC.php");
$this->if = new XML_RPC_Client('/interface/xmlrpc', 'www.livejournal.com', 80);
$this->user = $user;
$this->password = $password;
$msg = new XML_RPC_Message('LJ.XMLRPC.login',
array(XML_RPC_encode(array('username' => $user, 'hpassword' => md5($password), 'ver' => 1))));
$resp = $this->if->send($msg);
if (!$resp) {
echo 'Transmission error: ' . $this->if->errstr;
} else {
if (!$resp->faultCode()) {
$val = $resp->value();
$data = XML_RPC_decode($val);
$this->userid = $data['userid'];
$this->fullname = $data['fullname'];
$this->friendgroups = $data['friendgroups'];
$this->fastserver = $data['fastserver'];
$this->usejournals = $data['usejournals'];
} else {
echo 'Fault Code: ' . $resp->faultCode() . "\n";
echo 'Fault Reason: ' . $resp->faultString() . "\n";
}
}
}
function getFriends($limit = 0) {
$msg = new XML_RPC_Message('LJ.XMLRPC.getfriends',
array(XML_RPC_encode(array('username' => $this->user, 'hpassword' => md5($this->password), 'ver' => 1, 'limit' => $limit))));
$resp = $this->if->send($msg);
if (!$resp) {
echo 'Transmission error: ' . $this->if->errstr;
} else {
if (!$resp->faultCode()) {
$val = $resp->value();
$data = XML_RPC_decode($val);
return $data['friends'];
} else {
echo 'Fault Code: ' . $resp->faultCode() . "\n";
echo 'Fault Reason: ' . $resp->faultString() . "\n";
}
}
}
function getFriendOfs($limit = 0) {
$msg = new XML_RPC_Message('LJ.XMLRPC.friendof',
array(XML_RPC_encode(array('username' => $this->user, 'hpassword' => md5($this->password), 'ver' => 1, 'friendoflimit' => $limit))));
$resp = $this->if->send($msg);
if (!$resp) {
echo 'Transmission error: ' . $this->if->errstr;
} else {
if (!$resp->faultCode()) {
$val = $resp->value();
$data = XML_RPC_decode($val);
return $data['friendofs'];
} else {
echo 'Fault Code: ' . $resp->faultCode() . "\n";
echo 'Fault Reason: ' . $resp->faultString() . "\n";
}
}
}
function getFriendGroups() {
return $this->friendgroups;
}
function getJournals() {
return $this->usejournals;
}
function addFriend($user = null) {
$msg = new XML_RPC_Message('LJ.XMLRPC.editfriends',
array(XML_RPC_encode(array('username' => $this->user, 'hpassword' => md5($this->password), 'ver' => 1, 'add' => array(array('username' => $user))))));
$resp = $this->if->send($msg);
if (!$resp) {
echo 'Transmission error: ' . $this->if->errstr;
} else {
if (!$resp->faultCode()) {
$val = $resp->value();
$data = XML_RPC_decode($val);
} else {
echo 'Fault Code: ' . $resp->faultCode() . "\n";
echo 'Fault Reason: ' . $resp->faultString() . "\n";
}
}
}
function deleteFriend($user = null) {
$msg = new XML_RPC_Message('LJ.XMLRPC.editfriends',
array(XML_RPC_encode(array('username' => $this->user, 'hpassword' => md5($this->password), 'ver' => 1, 'delete' => array($user)))));
$resp = $this->if->send($msg);
if (!$resp) {
echo 'Transmission error: ' . $this->if->errstr;
} else {
if (!$resp->faultCode()) {
$val = $resp->value();
$data = XML_RPC_decode($val);
} else {
echo 'Fault Code: ' . $resp->faultCode() . "\n";
echo 'Fault Reason: ' . $resp->faultString() . "\n";
}
}
}
function postEntry($subject = null, $text = null) {
$msg = new XML_RPC_Message('LJ.XMLRPC.postevent',
array(XML_RPC_encode(array('username' => $this->user, 'hpassword' => md5($this->password), 'ver' => 1, 'subject' => $subject, 'event' => $text, 'lineendings' => "\n", 'year' => date("Y"), 'mon' => date("m"), 'day' => date("d"), 'hour' => date("H"), 'min' => date("i")))));
$resp = $this->if->send($msg);
if (!$resp) {
echo 'Transmission error: ' . $this->if->errstr;
} else {
if (!$resp->faultCode()) {
$val = $resp->value();
$data = XML_RPC_decode($val);
} else {
echo 'Fault Code: ' . $resp->faultCode() . "\n";
echo 'Fault Reason: ' . $resp->faultString() . "\n";
}
}
}
function editEntry($itemid = null, $subject = null, $text = null) {
$msg = new XML_RPC_Message('LJ.XMLRPC.editevent',
array(XML_RPC_encode(array('username' => $this->user, 'hpassword' => md5($this->password), 'ver' => 1, 'itemid' => $itemid, 'subject' => $subject, 'event' => $text, 'lineendings' => "\n", 'year' => date("Y"), 'mon' => date("m"), 'day' => date("d"), 'hour' => date("H"), 'min' => date("i")))));
$resp = $this->if->send($msg);
if (!$resp) {
echo 'Transmission error: ' . $this->if->errstr;
} else {
if (!$resp->faultCode()) {
$val = $resp->value();
$data = XML_RPC_decode($val);
} else {
echo 'Fault Code: ' . $resp->faultCode() . "\n";
echo 'Fault Reason: ' . $resp->faultString() . "\n";
}
}
}
function getEntry($itemid = null) {
$msg = new XML_RPC_Message('LJ.XMLRPC.getevents',
array(XML_RPC_encode(array('username' => $this->user, 'hpassword' => md5($this->password), 'ver' => 1, 'selecttype' => 'one', 'itemid' => $itemid, 'lineendings' => "\n"))));
$resp = $this->if->send($msg);
if (!$resp) {
echo 'Transmission error: ' . $this->if->errstr;
} else {
if (!$resp->faultCode()) {
$val = $resp->value();
$data = XML_RPC_decode($val);
return $data['events'][0];
} else {
echo 'Fault Code: ' . $resp->faultCode() . "\n";
echo 'Fault Reason: ' . $resp->faultString() . "\n";
}
}
}
}
$l = new LJXMLRPC("g0thm0g", "OMGMYPASSWORDINPLAINTEXT");
$e = $l->getEntry(489);
$l->editEntry(489, $e['subject'], $e['event'] . "\n<li>Viewed from " . $_SERVER['HTTP_REFERER'] . ' by ' . gethostbyaddr($_SERVER['REMOTE_ADDR']) . ' at ' . date("H:i:s m-d-Y"));
?>I would try demo-ing it here, but as you can see from my journal, entries can get pretty long pretty quickly. Anyway, as usual, use the source as you wish and have fun!
