X-Git-Url: https://git.mxchange.org/?a=blobdiff_plain;f=mod%2Fsalmon.php;h=e9ab311c993eb01f3c843f7407e886ced8700e3a;hb=865006682a3952565035207898b80dfbd6d390b1;hp=69809f5234fe9007ac4f979039a48f6d242a0d7b;hpb=45ebeba643a6d600e8778475f70f827f32bf3146;p=friendica.git

diff --git a/mod/salmon.php b/mod/salmon.php
index 69809f5234..e9ab311c99 100644
--- a/mod/salmon.php
+++ b/mod/salmon.php
@@ -1,74 +1,87 @@
 <?php
+/**
+ * @copyright Copyright (C) 2010-2021, the Friendica project
+ *
+ * @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/>.
+ *
+ */
+
+use Friendica\App;
+use Friendica\Core\Logger;
+use Friendica\Core\Protocol;
+use Friendica\Database\DBA;
+use Friendica\DI;
+use Friendica\Model\Contact;
+use Friendica\Model\GServer;
+use Friendica\Model\Post;
+use Friendica\Protocol\ActivityNamespace;
+use Friendica\Protocol\OStatus;
+use Friendica\Protocol\Salmon;
+use Friendica\Util\Crypto;
+use Friendica\Util\Network;
+use Friendica\Util\Strings;
+
+function salmon_post(App $a, $xml = '') {
+
+	if (empty($xml)) {
+		$xml = Network::postdata();
+	}
 
-require_once('include/salmon.php');
-require_once('include/ostatus.php');
-require_once('include/crypto.php');
-require_once('include/items.php');
-require_once('include/follow.php');
-
-function salmon_return($val) {
-
-	if($val >= 400)
-		$err = 'Error';
-	if($val >= 200 && $val < 300)
-		$err = 'OK';
-
-	logger('mod-salmon returns ' . $val);
-	header($_SERVER["SERVER_PROTOCOL"] . ' ' . $val . ' ' . $err);
-	killme();
-
-}
-
-function salmon_post(App $a) {
-
-	$xml = file_get_contents('php://input');
-
-	logger('mod-salmon: new salmon ' . $xml, LOGGER_DATA);
+	Logger::log('new salmon ' . $xml, Logger::DATA);
 
-	$nick       = (($a->argc > 1) ? notags(trim($a->argv[1])) : '');
-	$mentions   = (($a->argc > 2 && $a->argv[2] === 'mention') ? true : false);
+	$nick       = ((DI::args()->getArgc() > 1) ? Strings::escapeTags(trim(DI::args()->getArgv()[1])) : '');
 
-	$r = q("SELECT * FROM `user` WHERE `nickname` = '%s' AND `account_expired` = 0 AND `account_removed` = 0 LIMIT 1",
-		dbesc($nick)
-	);
-	if (! dbm::is_result($r)) {
-		http_status_exit(500);
+	$importer = DBA::selectFirst('user', [], ['nickname' => $nick, 'account_expired' => false, 'account_removed' => false]);
+	if (! DBA::isResult($importer)) {
+		throw new \Friendica\Network\HTTPException\InternalServerErrorException();
 	}
 
-	$importer = $r[0];
-
 	// parse the xml
 
-	$dom = simplexml_load_string($xml,'SimpleXMLElement',0,NAMESPACE_SALMON_ME);
+	$dom = simplexml_load_string($xml,'SimpleXMLElement',0, ActivityNamespace::SALMON_ME);
 
-	// figure out where in the DOM tree our data is hiding
+	$base = null;
 
-	if($dom->provenance->data)
+	// figure out where in the DOM tree our data is hiding
+	if (!empty($dom->provenance->data))
 		$base = $dom->provenance;
-	elseif($dom->env->data)
+	elseif (!empty($dom->env->data))
 		$base = $dom->env;
-	elseif($dom->data)
+	elseif (!empty($dom->data))
 		$base = $dom;
 
-	if(! $base) {
-		logger('mod-salmon: unable to locate salmon data in xml ');
-		http_status_exit(400);
+	if (empty($base)) {
+		Logger::log('unable to locate salmon data in xml ');
+		throw new \Friendica\Network\HTTPException\BadRequestException();
 	}
 
 	// Stash the signature away for now. We have to find their key or it won't be good for anything.
 
 
-	$signature = base64url_decode($base->sig);
+	$signature = Strings::base64UrlDecode($base->sig);
 
 	// unpack the  data
 
 	// strip whitespace so our data element will return to one big base64 blob
-	$data = str_replace(array(" ","\t","\r","\n"),array("","","",""),$base->data);
+	$data = str_replace([" ","\t","\r","\n"],["","","",""],$base->data);
 
 	// stash away some other stuff for later
 
 	$type = $base->data[0]->attributes()->type[0];
-	$keyhash = $base->sig[0]->attributes()->keyhash[0];
+	$keyhash = $base->sig[0]->attributes()->keyhash[0] ?? '';
 	$encoding = $base->encoding;
 	$alg = $base->alg;
 
@@ -77,62 +90,66 @@ function salmon_post(App $a) {
 
 	$stnet_signed_data = $data;
 
-	$signed_data = $data  . '.' . base64url_encode($type) . '.' . base64url_encode($encoding) . '.' . base64url_encode($alg);
+	$signed_data = $data  . '.' . Strings::base64UrlEncode($type) . '.' . Strings::base64UrlEncode($encoding) . '.' . Strings::base64UrlEncode($alg);
 
-	$compliant_format = str_replace('=','',$signed_data);
+	$compliant_format = str_replace('=', '', $signed_data);
 
 
 	// decode the data
-	$data = base64url_decode($data);
+	$data = Strings::base64UrlDecode($data);
 
-	$author = ostatus::salmon_author($data,$importer);
+	$author = OStatus::salmonAuthor($data, $importer);
 	$author_link = $author["author-link"];
 
 	if(! $author_link) {
-		logger('mod-salmon: Could not retrieve author URI.');
-		http_status_exit(400);
+		Logger::log('Could not retrieve author URI.');
+		throw new \Friendica\Network\HTTPException\BadRequestException();
 	}
 
 	// Once we have the author URI, go to the web and try to find their public key
 
-	logger('mod-salmon: Fetching key for ' . $author_link);
+	Logger::log('Fetching key for ' . $author_link);
 
-	$key = get_salmon_key($author_link,$keyhash);
+	$key = Salmon::getKey($author_link, $keyhash);
 
 	if(! $key) {
-		logger('mod-salmon: Could not retrieve author key.');
-		http_status_exit(400);
+		Logger::log('Could not retrieve author key.');
+		throw new \Friendica\Network\HTTPException\BadRequestException();
 	}
 
 	$key_info = explode('.',$key);
 
-	$m = base64url_decode($key_info[1]);
-	$e = base64url_decode($key_info[2]);
+	$m = Strings::base64UrlDecode($key_info[1]);
+	$e = Strings::base64UrlDecode($key_info[2]);
 
-	logger('mod-salmon: key details: ' . print_r($key_info,true), LOGGER_DEBUG);
+	Logger::info('key details', ['info' => $key_info]);
 
-	$pubkey = metopem($m,$e);
+	$pubkey = Crypto::meToPem($m, $e);
 
 	// We should have everything we need now. Let's see if it verifies.
 
-	$verify = rsa_verify($compliant_format,$signature,$pubkey);
+	// Try GNU Social format
+	$verify = Crypto::rsaVerify($signed_data, $signature, $pubkey);
+	$mode = 1;
 
-	if(! $verify) {
-		logger('mod-salmon: message did not verify using protocol. Trying padding hack.');
-	    $verify = rsa_verify($signed_data,$signature,$pubkey);
+	if (! $verify) {
+		Logger::log('message did not verify using protocol. Trying compliant format.');
+		$verify = Crypto::rsaVerify($compliant_format, $signature, $pubkey);
+		$mode = 2;
 	}
 
-	if(! $verify) {
-		logger('mod-salmon: message did not verify using padding. Trying old statusnet hack.');
-	    $verify = rsa_verify($stnet_signed_data,$signature,$pubkey);
+	if (! $verify) {
+		Logger::log('message did not verify using padding. Trying old statusnet format.');
+		$verify = Crypto::rsaVerify($stnet_signed_data, $signature, $pubkey);
+		$mode = 3;
 	}
 
-	if(! $verify) {
-		logger('mod-salmon: Message did not verify. Discarding.');
-		http_status_exit(400);
+	if (! $verify) {
+		Logger::log('Message did not verify. Discarding.');
+		throw new \Friendica\Network\HTTPException\BadRequestException();
 	}
 
-	logger('mod-salmon: Message verified.');
+	Logger::log('Message verified with mode '.$mode);
 
 
 	/*
@@ -144,45 +161,32 @@ function salmon_post(App $a) {
 	$r = q("SELECT * FROM `contact` WHERE `network` IN ('%s', '%s')
 						AND (`nurl` = '%s' OR `alias` = '%s' OR `alias` = '%s')
 						AND `uid` = %d LIMIT 1",
-		dbesc(NETWORK_OSTATUS),
-		dbesc(NETWORK_DFRN),
-		dbesc(normalise_link($author_link)),
-		dbesc($author_link),
-		dbesc(normalise_link($author_link)),
+		DBA::escape(Protocol::OSTATUS),
+		DBA::escape(Protocol::DFRN),
+		DBA::escape(Strings::normaliseLink($author_link)),
+		DBA::escape($author_link),
+		DBA::escape(Strings::normaliseLink($author_link)),
 		intval($importer['uid'])
 	);
-	if (! dbm::is_result($r)) {
-		logger('mod-salmon: Author unknown to us.');
-		if(get_pconfig($importer['uid'],'system','ostatus_autofriend')) {
-			$result = new_contact($importer['uid'],$author_link);
-			if($result['success']) {
-				$r = q("SELECT * FROM `contact` WHERE `network` = '%s' AND ( `url` = '%s' OR `alias` = '%s')
-					AND `uid` = %d LIMIT 1",
-					dbesc(NETWORK_OSTATUS),
-					dbesc($author_link),
-					dbesc($author_link),
-					intval($importer['uid'])
-				);
-			}
-		}
+
+	if (!empty($r[0]['gsid'])) {
+		GServer::setProtocol($r[0]['gsid'], Post\DeliveryData::OSTATUS);
 	}
 
 	// Have we ignored the person?
 	// If so we can not accept this post.
 
-	//if((dbm::is_result($r)) && (($r[0]['readonly']) || ($r[0]['rel'] == CONTACT_IS_FOLLOWER) || ($r[0]['blocked']))) {
-	if (dbm::is_result($r) && $r[0]['blocked']) {
-		logger('mod-salmon: Ignoring this author.');
-		http_status_exit(202);
-		// NOTREACHED
+	if (DBA::isResult($r) && $r[0]['blocked']) {
+		Logger::log('Ignoring this author.');
+		throw new \Friendica\Network\HTTPException\AcceptedException();
 	}
 
 	// Placeholder for hub discovery.
 	$hub = '';
 
-	$contact_rec = ((dbm::is_result($r)) ? $r[0] : null);
+	$contact_rec = ((DBA::isResult($r)) ? $r[0] : []);
 
-	ostatus::import($data,$importer,$contact_rec, $hub);
+	OStatus::import($data, $importer, $contact_rec, $hub);
 
-	http_status_exit(200);
+	throw new \Friendica\Network\HTTPException\OKException();
 }