<?php
function dfrn_confirm_post(&$a) {
if($a->argc > 1)
$node = $a->argv[1];
if(x($_POST,'source_url')) {
// We are processing an external confirmation to an introduction created by our user.
$public_key = $_POST['public_key'];
$dfrn_id = $_POST['dfrn_id'];
$source_url = $_POST['source_url'];
$aes_key = $_POST['aes_key'];
if(intval($node))
$r = q("SELECT * FROM `user` WHERE `uid` = %d LIMIT 1",
intval($node));
else
$r = q("SELECT * FROM `user` WHERE `nickname` = '%s' LIMIT 1",
dbesc($node));
if(! count($r)) {
xml_status(3); // failure
}
$my_prvkey = $r[0]['prvkey'];
$local_uid = $r[0]['uid'];
$decrypted_source_url = "";
openssl_private_decrypt($source_url,$decrypted_source_url,$my_prvkey);
$ret = q("SELECT * FROM `contact` WHERE `url` = '%s' AND `uid` = %d LIMIT 1",
dbesc($decrypted_source_url),
intval($local_uid));
if(! count($ret)) {
// this is either a bogus confirmation or we deleted the original introduction.
xml_status(3);
}
// Decrypt all this stuff we just received
$foreign_pubkey = $ret[0]['site-pubkey'];
$dfrn_record = $ret[0]['id'];
$decrypted_dfrn_id = "";
openssl_public_decrypt($dfrn_id,$decrypted_dfrn_id,$foreign_pubkey);
if(strlen($aes_key)) {
$decrypted_aes_key = "";
openssl_private_decrypt($aes_key,$decrypted_aes_key,$my_prvkey);
$dfrn_pubkey = openssl_decrypt($public_key,'AES-256-CBC',$decrypted_aes_key);
}
else {
$dfrn_pubkey = $public_key;
}
$r = q("SELECT * FROM `contact` WHERE `dfrn-id` = '%s' LIMIT 1",
dbesc($decrypted_dfrn_id),
intval($local_uid));
if(count($r))
xml_status(1); // Birthday paradox - duplicate dfrn-id
$r = q("UPDATE `contact` SET `dfrn-id` = '%s', `pubkey` = '%s' WHERE `id` = %d LIMIT 1",
dbesc($decrypted_dfrn_id),
dbesc($dfrn_pubkey),
intval($dfrn_record));
if($r) {
// We're good but now we have to scrape the profile photo and send notifications.
require_once("Photo.php");
$photo_failure = false;
$r = q("SELECT `photo` FROM `contact` WHERE `id` = %d LIMIT 1",
intval($dfrn_record));
if(count($r)) {
$filename = basename($r[0]['photo']);
$img_str = fetch_url($r[0]['photo'],true);
$img = new Photo($img_str);
if($img) {
$img->scaleImageSquare(175);
$hash = hash('md5',uniqid(mt_rand(),true));
$r = q("INSERT INTO `photo` ( `uid`, `resource-id`, `created`, `edited`, `filename`,
`height`, `width`, `data`, `scale` )
VALUES ( %d, '%s', '%s', '%s', '%s', %d, %d, '%s', 4 )",
intval($local_uid),
dbesc($hash),
datetime_convert(),
datetime_convert(),
dbesc(basename($r[0]['photo'])),
intval($img->getHeight()),
intval($img->getWidth()),
dbesc($img->imageString())
);
if($r === false)
$photo_failure = true;
$img->scaleImage(80);
$r = q("INSERT INTO `photo` ( `uid`, `resource-id`, `created`, `edited`, `filename`,
`height`, `width`, `data`, `scale` )
VALUES ( %d, '%s', '%s', '%s', '%s', %d, %d, '%s', 5 )",
intval($local_uid),
dbesc($hash),
datetime_convert(),
datetime_convert(),
dbesc(basename($r[0]['photo'])),
intval($img->getHeight()),
intval($img->getWidth()),
dbesc($img->imageString())
);
if($r === false)
$photo_failure = true;
$photo = $a->get_baseurl() . '/photo/' . $hash . '-4.jpg';
$thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.jpg';
}
else
$photo_failure = true;
}
else
$photo_failure = true;
if($photo_failure) {
$photo = $a->get_baseurl() . '/images/default-profile.jpg';
$thumb = $a->get_baseurl() . '/images/default-profile-sm.jpg';
}
$r = q("UPDATE `contact` SET `photo` = '%s', `thumb` = '%s', `blocked` = 0 WHERE `id` = %d LIMIT 1",
dbesc($photo),
dbesc($thumb),
intval($dfrn_record)
);
if($r === false)
$_SESSION['sysmsg'] .= "Unable to set contact photo info." . EOL;
// Otherwise everything seems to have worked and we are almost done. Yay!
// Send an email notification
$r = q("SELECT * FROM `contact` LEFT JOIN `user` ON `contact`.`uid` = `user`.`uid`
WHERE `contact`.`id` = %d LIMIT 1",
intval($dfrn_record));
$tpl = file_get_contents('view/intro_complete_eml.tpl');
$email_tpl = replace_macros($tpl, array(
'$sitename' => $a->config['sitename'],
'$siteurl' => $a->get_baseurl(),
'$username' => $r[0]['username'],
'$email' => $r[0]['email'],
'$fn' => $r[0]['name'],
'$dfrn_url' => $r[0]['url'],
'$uid' => $newuid ));
$res = mail($r[0]['email'],"Introduction accepted at {$a->config['sitename']}",
$email_tpl,"From: Administrator@{$_SERVER[SERVER_NAME]}");
if(!$res) {
$_SESSION['sysmsg'] .= "Email notification failed." . EOL;
}
xml_status(0); // Success
return; // NOTREACHED
}
else
xml_status(2); // Hopefully temporary problem that can be retried.
return; // NOTREACHED
////////////////////// End of this scenario ///////////////////////////////////////////////
}
else {
// We are processing a local confirmation initiated on this system by our user to an external introduction.
$uid = $_SESSION['uid'];
if(! $uid) {
$_SESSION['sysmsg'] = 'Unauthorised.';
return;
}
$dfrn_id = ((x($_POST,'dfrn_id')) ? notags(trim($_POST['dfrn_id'])) : "");
$intro_id = intval($_POST['intro_id']);
$r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `uid` = %d LIMIT 1",
dbesc($dfrn_id),
intval($uid)
);
if((! $r) || (! count($r))) {
$_SESSION['sysmsg'] = 'Node does not exist.' . EOL ;
return;
}
$contact_id = $r[0]['id'];
$site_pubkey = $r[0]['site-pubkey'];
$dfrn_confirm = $r[0]['confirm'];
$aes_allow = $r[0]['aes_allow'];
$res=openssl_pkey_new(array(
'digest_alg' => 'whirlpool',
'private_key_bits' => 4096,
'encrypt_key' => false ));
$private_key = '';
openssl_pkey_export($res, $private_key);
$pubkey = openssl_pkey_get_details($res);
$public_key = $pubkey["key"];
$r = q("UPDATE `contact` SET `pubkey` = '%s', `prvkey` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
dbesc($public_key),
dbesc($private_key),
intval($contact_id),
intval($uid)
);
$params = array();
$src_aes_key = random_string();
$result = "";
openssl_private_encrypt($dfrn_id,$result,$a->user['prvkey']);
$params['dfrn_id'] = $result;
$params['public_key'] = $public_key;
openssl_public_encrypt($_SESSION['my_url'], $params['source_url'], $site_pubkey);
if($aes_allow && function_exists('openssl_encrypt')) {
openssl_public_encrypt($src_aes_key, $params['aes_key'], $site_pubkey);
$params['public_key'] = openssl_encrypt($public_key,'AES-256-CBC',$src_aes_key);
}
$res = post_url($dfrn_confirm,$params);
// uncomment the following two lines and comment the following xml/status lines
// to debug the remote confirmation section (when both confirmations
// and responses originate on this system)
// echo $res;
// $status = 0;
$xml = simplexml_load_string($res);
$status = (int) $xml->status;
switch($status) {
case 0:
$_SESSION['sysmsg'] .= "Confirmation completed successfully" . EOL;
break;
case 1:
// birthday paradox - generate new dfrn-id and fall through.
$new_dfrn_id = random_string();
$r = q("UPDATE contact SET `issued-id` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
dbesc($new_dfrn_id),
intval($contact_id),
intval($uid)
);
case 2:
$_SESSION['sysmsg'] .= "Temporary failure. Please wait and try again." . EOL;
break;
case 3:
$_SESSION['sysmsg'] .= "Introduction failed or was revoked. Cannot complete." . EOL;
break;
}
if(($status == 0 || $status == 3) && ($intro_id)) {
//delete the notification
$r = q("DELETE FROM `intro` WHERE `id` = %d AND `uid` = %d LIMIT 1",
intval($intro_id),
intval($uid)
);
}
if($status != 0)
return;
require_once("Photo.php");
$photo_failure = false;
$r = q("SELECT `photo` FROM `contact` WHERE `id` = %d LIMIT 1",
intval($contact_id));
if(count($r)) {
$filename = basename($r[0]['photo']);
$img_str = fetch_url($r[0]['photo'],true);
$img = new Photo($img_str);
if($img) {
$img->scaleImageSquare(175);
$hash = hash('md5',uniqid(mt_rand(),true));
$r = q("INSERT INTO `photo` ( `uid`, `resource-id`, `created`, `edited`, `filename`,
`height`, `width`, `data`, `scale` )
VALUES ( %d, '%s', '%s', '%s', '%s', %d, %d, '%s', 4 )",
intval($local_uid),
dbesc($hash),
datetime_convert(),
datetime_convert(),
dbesc(basename($r[0]['photo'])),
intval($img->getHeight()),
intval($img->getWidth()),
dbesc($img->imageString())
);
if($r === false)
$photo_failure = true;
$img->scaleImage(80);
$r = q("INSERT INTO `photo` ( `uid`, `resource-id`, `created`, `edited`, `filename`,
`height`, `width`, `data`, `scale` )
VALUES ( %d, '%s', '%s', '%s', '%s', %d, %d, '%s', 5 )",
intval($local_uid),
dbesc($hash),
datetime_convert(),
datetime_convert(),
dbesc(basename($r[0]['photo'])),
intval($img->getHeight()),
intval($img->getWidth()),
dbesc($img->imageString())
);
if($r === false)
$photo_failure = true;
$photo = $a->get_baseurl() . '/photo/' . $hash . '-4.jpg';
$thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.jpg';
}
else
$photo_failure = true;
}
else
$photo_failure = true;
if($photo_failure) {
$photo = $a->get_baseurl() . '/images/default-profile.jpg';
$thumb = $a->get_baseurl() . '/images/default-profile-sm.jpg';
}
$r = q("UPDATE `contact` SET `photo` = '%s', `thumb` = '%s', `blocked` = 0 WHERE `id` = %d LIMIT 1",
dbesc($photo),
dbesc($thumb),
intval($contact_id)
);
if($r === false)
$_SESSION['sysmsg'] .= "Unable to set contact photo info." . EOL;
}
return;
}
