<?php
-
/**
- * @file src/Util/HTTPSignature.php
+ * @copyright Copyright (C) 2020, Friendica
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
*/
+
namespace Friendica\Util;
-use Friendica\Core\Config;
+use Friendica\Database\DBA;
use Friendica\Core\Logger;
+use Friendica\DI;
use Friendica\Model\User;
use Friendica\Model\APContact;
/**
- * @brief Implements HTTP Signatures per draft-cavage-http-signatures-07.
+ * Implements HTTP Signatures per draft-cavage-http-signatures-07.
*
* Ported from Hubzilla: https://framagit.org/hubzilla/core/blob/master/Zotlabs/Web/HTTPSig.php
*
{
// See draft-cavage-http-signatures-08
/**
- * @brief Verifies a magic request
+ * Verifies a magic request
*
* @param $key
*
}
/**
- * @brief
- *
* @param array $head
* @param string $prvkey
* @param string $keyid (optional, default 'Key')
}
/**
- * @brief
- *
* @param array $head
* @param string $prvkey
* @param string $alg (optional) default 'sha256'
}
/**
- * @brief
- *
* @param string $header
* @return array associate array with
* - \e string \b keyID
}
/**
- * @brief
- *
* @param string $header
* @param string $prvkey (optional), if not set use site private key
*
$iv = $key = $alg = $data = null;
if (!$prvkey) {
- $prvkey = Config::get('system', 'prvkey');
+ $prvkey = DI::config()->get('system', 'prvkey');
}
$matches = [];
*/
/**
- * @brief Transmit given data to a target for a user
+ * Transmit given data to a target for a user
*
* @param array $data Data that is about to be send
* @param string $target The URL of the inbox
Logger::log('Transmit to ' . $target . ' returned ' . $return_code, Logger::DEBUG);
- return ($return_code >= 200) && ($return_code <= 299);
+ $success = ($return_code >= 200) && ($return_code <= 299);
+
+ self::setInboxStatus($target, $success);
+
+ return $success;
}
/**
- * @brief Fetches JSON data for a user
- *
- * @param string $request request url
- * @param integer $uid User id of the requester
+ * Set the delivery status for a given inbox
*
- * @return array JSON array
- * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+ * @param string $url The URL of the inbox
+ * @param boolean $success Transmission status
*/
- public static function fetch($request, $uid)
+ static private function setInboxStatus($url, $success)
{
- $owner = User::getOwnerDataById($uid);
+ $now = DateTimeFormat::utcNow();
- if (!$owner) {
- return;
+ $status = DBA::selectFirst('inbox-status', [], ['url' => $url]);
+ if (!DBA::isResult($status)) {
+ DBA::insert('inbox-status', ['url' => $url, 'created' => $now]);
+ $status = DBA::selectFirst('inbox-status', [], ['url' => $url]);
}
- // Header data that is about to be signed.
- $host = parse_url($request, PHP_URL_HOST);
- $path = parse_url($request, PHP_URL_PATH);
- $date = DateTimeFormat::utcNow(DateTimeFormat::HTTP);
+ if ($success) {
+ $fields = ['success' => $now];
+ } else {
+ $fields = ['failure' => $now];
+ }
- $headers = ['Date: ' . $date, 'Host: ' . $host];
+ if ($status['failure'] > DBA::NULL_DATETIME) {
+ $new_previous_stamp = strtotime($status['failure']);
+ $old_previous_stamp = strtotime($status['previous']);
- $signed_data = "(request-target): get " . $path . "\ndate: ". $date . "\nhost: " . $host;
+ // Only set "previous" with at least one day difference.
+ // We use this to assure to not accidentally archive too soon.
+ if (($new_previous_stamp - $old_previous_stamp) >= 86400) {
+ $fields['previous'] = $status['failure'];
+ }
+ }
- $signature = base64_encode(Crypto::rsaSign($signed_data, $owner['uprvkey'], 'sha256'));
+ if (!$success) {
+ if ($status['success'] <= DBA::NULL_DATETIME) {
+ $stamp1 = strtotime($status['created']);
+ } else {
+ $stamp1 = strtotime($status['success']);
+ }
- $headers[] = 'Signature: keyId="' . $owner['url'] . '#main-key' . '",algorithm="rsa-sha256",headers="(request-target) date host",signature="' . $signature . '"';
+ $stamp2 = strtotime($now);
+ $previous_stamp = strtotime($status['previous']);
- $headers[] = 'Accept: application/activity+json, application/ld+json';
+ // Archive the inbox when there had been failures for five days.
+ // Additionally ensure that at least one previous attempt has to be in between.
+ if ((($stamp2 - $stamp1) >= 86400 * 5) && ($previous_stamp > $stamp1)) {
+ $fields['archive'] = true;
+ }
+ } else {
+ $fields['archive'] = false;
+ }
- $curlResult = Network::curl($request, false, $redirects, ['header' => $headers]);
- $return_code = $curlResult->getReturnCode();
+ DBA::update('inbox-status', $fields, ['url' => $url]);
+ }
- Logger::log('Fetched for user ' . $uid . ' from ' . $request . ' returned ' . $return_code, Logger::DEBUG);
+ /**
+ * Fetches JSON data for a user
+ *
+ * @param string $request request url
+ * @param integer $uid User id of the requester
+ *
+ * @return array JSON array
+ * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+ */
+ public static function fetch($request, $uid)
+ {
+ $opts = ['accept_content' => 'application/activity+json, application/ld+json'];
+ $curlResult = self::fetchRaw($request, $uid, false, $opts);
+
+ if (empty($curlResult)) {
+ return false;
+ }
if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
return false;
}
$content = json_decode($curlResult->getBody(), true);
-
if (empty($content) || !is_array($content)) {
return false;
}
}
/**
- * @brief Gets a signer from a given HTTP request
+ * Fetches raw data for a user
+ *
+ * @param string $request request url
+ * @param integer $uid User id of the requester
+ * @param boolean $binary TRUE if asked to return binary results (file download) (default is "false")
+ * @param array $opts (optional parameters) assoziative array with:
+ * 'accept_content' => supply Accept: header with 'accept_content' as the value
+ * 'timeout' => int Timeout in seconds, default system config value or 60 seconds
+ * 'http_auth' => username:password
+ * 'novalidate' => do not validate SSL certs, default is to validate using our CA list
+ * 'nobody' => only return the header
+ * 'cookiejar' => path to cookie jar file
+ *
+ * @return object CurlResult
+ * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+ */
+ public static function fetchRaw($request, $uid = 0, $binary = false, $opts = [])
+ {
+ if (!empty($uid)) {
+ $owner = User::getOwnerDataById($uid);
+ if (!$owner) {
+ return;
+ }
+
+ // Header data that is about to be signed.
+ $host = parse_url($request, PHP_URL_HOST);
+ $path = parse_url($request, PHP_URL_PATH);
+ $date = DateTimeFormat::utcNow(DateTimeFormat::HTTP);
+
+ $headers = ['Date: ' . $date, 'Host: ' . $host];
+
+ $signed_data = "(request-target): get " . $path . "\ndate: ". $date . "\nhost: " . $host;
+
+ $signature = base64_encode(Crypto::rsaSign($signed_data, $owner['uprvkey'], 'sha256'));
+
+ $headers[] = 'Signature: keyId="' . $owner['url'] . '#main-key' . '",algorithm="rsa-sha256",headers="(request-target) date host",signature="' . $signature . '"';
+ } else {
+ $headers = [];
+ }
+
+ if (!empty($opts['accept_content'])) {
+ $headers[] = 'Accept: ' . $opts['accept_content'];
+ }
+
+ $curl_opts = $opts;
+ $curl_opts['header'] = $headers;
+
+ $curlResult = Network::curl($request, false, $curl_opts);
+ $return_code = $curlResult->getReturnCode();
+
+ Logger::log('Fetched for user ' . $uid . ' from ' . $request . ' returned ' . $return_code, Logger::DEBUG);
+
+ return $curlResult;
+ }
+
+ /**
+ * Gets a signer from a given HTTP request
*
* @param $content
* @param $http_headers
return false;
}
+ $hasGoodSignedContent = false;
+
// Check the digest when it is part of the signed data
- if (in_array('digest', $sig_block['headers'])) {
+ if (!empty($content) && in_array('digest', $sig_block['headers'])) {
$digest = explode('=', $headers['digest'], 2);
if ($digest[0] === 'SHA-256') {
$hashalg = 'sha256';
if (!empty($hashalg) && base64_encode(hash($hashalg, $content, true)) != $digest[1]) {
return false;
}
+
+ $hasGoodSignedContent = true;
}
// Check if the signed date field is in an acceptable range
Logger::log("Header date '" . $headers['date'] . "' is with " . $diff . " seconds out of the 300 second frame. The signature is invalid.");
return false;
}
+ $hasGoodSignedContent = true;
}
// Check the content-length when it is part of the signed data
}
}
+ // Ensure that the authentication had been done with some content
+ // Without this check someone could authenticate with fakeable data
+ if (!$hasGoodSignedContent) {
+ return false;
+ }
+
return $key['url'];
}
/**
- * @brief fetches a key for a given id and actor
+ * fetches a key for a given id and actor
*
* @param $id
* @param $actor
projects / friendica.git / blobdiff