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RINO 2 based on php-encryption

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reenable RINO 1 functions, add a deprecation note.
use by default RINO 2 , with crypto from php-encryption
fallback to RINO 1 for old nodes.
This commit is contained in:
Fabrixxm 2015-06-23 16:13:09 +02:00
commit 6fbb02fb93
11 changed files with 1038 additions and 32 deletions
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55
mod/dfrn_notify.php
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@ -4,6 +4,7 @@ require_once('library/simplepie/simplepie.inc');
require_once('include/items.php');
require_once('include/event.php');
require_once('library/defuse/php-encryption-1.2.1/Crypto.php');
function dfrn_notify_post(&$a) {
logger(__function__, LOGGER_TRACE);
@ -12,6 +13,7 @@ function dfrn_notify_post(&$a) {
$challenge = ((x($_POST,'challenge')) ? notags(trim($_POST['challenge'])) : '');
$data = ((x($_POST,'data')) ? $_POST['data'] : '');
$key = ((x($_POST,'key')) ? $_POST['key'] : '');
$rino_remote = ((x($_POST,'rino')) ? intval($_POST['rino']) : 0);
$dissolve = ((x($_POST,'dissolve')) ? intval($_POST['dissolve']) : 0);
$perm = ((x($_POST,'perm')) ? notags(trim($_POST['perm'])) : 'r');
$ssl_policy = ((x($_POST,'ssl_policy')) ? notags(trim($_POST['ssl_policy'])): 'none');
@ -130,7 +132,7 @@ function dfrn_notify_post(&$a) {
if($importer['page-flags'] == PAGE_SOAPBOX)
xml_status(0);
/** disable rino
if(strlen($key)) {
$rawkey = hex2bin(trim($key));
logger('rino: md5 raw key: ' . md5($rawkey));
@ -153,11 +155,42 @@ function dfrn_notify_post(&$a) {
}
}
logger('rino: received key : ' . $final_key);
$data = aes_decrypt(hex2bin($data),$final_key);
#logger('rino: received key : ' . $final_key);
switch($rino_remote) {
case 0:
case 1:
// we got a key. old code send only the key, without RINO version.
// we assume RINO 1 if key and no RINO version
$data = aes_decrypt(hex2bin($data),$final_key);
break;
case 2:
try {
$data = Crypto::decrypt(hex2bin($data),$final_key);
} catch (InvalidCiphertext $ex) { // VERY IMPORTANT
// Either:
// 1. The ciphertext was modified by the attacker,
// 2. The key is wrong, or
// 3. $ciphertext is not a valid ciphertext or was corrupted.
// Assume the worst.
logger('The ciphertext has been tampered with!');
xml_status(0,'The ciphertext has been tampered with!');
} catch (Ex\CryptoTestFailed $ex) {
logger('Cannot safely perform dencryption');
xml_status(0,'CryptoTestFailed');
} catch (Ex\CannotPerformOperation $ex) {
logger('Cannot safely perform decryption');
xml_status(0,'Cannot safely perform decryption');
}
break;
default:
logger("rino: invalid sent verision '$rino_remote'");
xml_status(0);
}
logger('rino: decrypted data: ' . $data, LOGGER_DATA);
}
**/
$ret = local_delivery($importer,$data);
xml_status($ret);
@ -253,16 +286,14 @@ function dfrn_notify_content(&$a) {
$challenge = bin2hex($challenge);
$encrypted_id = bin2hex($encrypted_id);
/**
* disable rino.
$rino = ((function_exists('mcrypt_encrypt')) ? 1 : 0);
$rino = get_config('system','rino_encrypt');
$rino_enable = get_config('system','rino_encrypt');
if(! $rino_enable)
if(! $rino){
$rino = 0;
**/
$rino = 0; $rino_enable = 0;
} else {
$rino = 2;
}
if((($r[0]['rel']) && ($r[0]['rel'] != CONTACT_IS_SHARING)) || ($r[0]['page-flags'] == PAGE_COMMUNITY)) {
$perm = 'rw';