Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?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'];
$duplex = $_POST['duplex'];
$version_id = $_POST['dfrn_version'];
// Find our user's account
$r = q("SELECT * FROM `user` WHERE `nickname` = '%s' LIMIT 1",
dbesc($node));
if(! count($r)) {
xml_status(3); // failure
// NOTREACHED
}
$my_prvkey = $r[0]['prvkey'];
$local_uid = $r[0]['uid'];
// verify everything
$decrypted_source_url = "";
openssl_private_decrypt($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);
return; // NOTREACHED
}
$relation = $ret[0]['rel'];
// 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
// NOTREACHED
}
$r = q("UPDATE `contact` SET `dfrn-id` = '%s', `pubkey` = '%s' WHERE `id` = %d LIMIT 1",
dbesc($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->is_valid()) {
$img->scaleImageSquare(175);
$hash = photo_new_resource();
$r = $img->store($local_uid, $dfrn_record, $hash, $filename, t('Contact Photos') , 4);
if($r === false)
$photo_failure = true;
$img->scaleImage(80);
$r = $img->store($local_uid, $dfrn_record, $hash, $filename, t('Contact Photos') , 5);
if($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';
}
$new_relation = REL_FAN;
if(($relation == REL_VIP) || ($duplex))
$new_relation = REL_BUD;
$r = q("UPDATE `contact` SET
`photo` = '%s',
`thumb` = '%s',
`rel` = %d,
`name-date` = '%s',
`uri-date` = '%s',
`avatar-date` = '%s',
`blocked` = 0,
`pending` = 0,
`duplex` = %d,
`network` = 'dfrn' WHERE `id` = %d LIMIT 1
",
dbesc($photo),
dbesc($thumb),
intval($new_relation),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
intval($duplex),
intval($dfrn_record)
);
if($r === false)
notice( t("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)
);
if((count($r)) && ($r[0]['notify-flags'] & NOTIFY_CONFIRM)) {
$tpl = (($new_relation == REL_BUD)
? load_view_file('view/friend_complete_eml.tpl')
: load_view_file('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'], t("Connection accepted at ") . $a->config['sitename'],
$email_tpl, 'From: ' . t('Administrator') . '@' . $_SERVER[SERVER_NAME] );
if(!$res) {
notice( t("Email notification failed.") . EOL );
}
}
xml_status(0); // Success
// 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 = get_uid();
if(! $uid) {
notice( t('Permission denied.') . EOL );
return;
}
$dfrn_id = ((x($_POST,'dfrn_id')) ? notags(trim($_POST['dfrn_id'])) : "");
$intro_id = intval($_POST['intro_id']);
$duplex = intval($_POST['duplex']);
$r = q("SELECT * FROM `contact` WHERE `issued-id` = '%s' AND `uid` = %d LIMIT 1",
dbesc($dfrn_id),
intval($uid)
);
if(! count($r)) {
notice( t('Node does not exist.') . EOL );
return;
}
$contact_id = $r[0]['id'];
$relation = $r[0]['rel'];
$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"];
$r = q("UPDATE `contact` SET `prvkey` = '%s' WHERE `id` = %d AND `uid` = %d LIMIT 1",
dbesc($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);
}
$params['dfrn_version'] = '2.0';
if($duplex == 1)
$params['duplex'] = 1;
$res = post_url($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:
notice( t("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:
notice( t("Temporary failure. Please wait and try again.") . EOL);
break;
case 3:
notice( t("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->is_valid()) {
$img->scaleImageSquare(175);
$hash = photo_new_resource();
$r = $img->store($uid, $contact_id, $hash, $filename, t('Contact Photos'), 4 );
if($r === false)
$photo_failure = true;
$img->scaleImage(80);
$r = $img->store($uid, $contact_id, $hash, $filename, t('Contact Photos'), 5 );
if($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';
}
$new_relation = REL_VIP;
if(($relation == REL_FAN) || ($duplex))
$new_relation = REL_BUD;
$r = q("UPDATE `contact` SET `photo` = '%s',
`thumb` = '%s',
`rel` = %d,
`name-date` = '%s',
`uri-date` = '%s',
`avatar-date` = '%s',
`blocked` = 0,
`pending` = 0,
`duplex` = %d,
`network` = 'dfrn' WHERE `id` = %d LIMIT 1
",
dbesc($photo),
dbesc($thumb),
intval($new_relation),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
intval($duplex),
intval($contact_id)
);
if($r === false)
notice( t('Unable to set contact photo.') . EOL);
goaway($a->get_baseurl() . '/contacts/' . intval($contact_id));
return; //NOTREACHED
}
return;
}