Avoid local network communication / invalid url requests

src/Content/Text/BBCode.php

@@ -305,7 +305,7 @@ class BBCode
 		// if nothing is found, it maybe having an image.
 		if (!isset($post['type'])) {
 			if (preg_match_all("#\[url=([^\]]+?)\]\s*\[img\]([^\[]+?)\[/img\]\s*\[/url\]#ism", $post['text'], $pictures, PREG_SET_ORDER)) {
-				if ((count($pictures) == 1) && !$has_title) {
+				if ((count($pictures) == 1) && !$has_title && !Photo::isLocal($pictures[0][2])) {
 					if (!empty($item['object-type']) && ($item['object-type'] == Activity\ObjectType::IMAGE)) {
 						// Replace the preview picture with the real picture
 						$url = str_replace('-1.', '-0.', $pictures[0][2]);

src/Model/APContact.php

@@ -376,6 +376,11 @@ class APContact
 		// Unhandled from Kroeg
 		// kroeg:blocks, updated
 
+		if (!empty($apcontact['photo']) && !Network::isValidHttpUrl($apcontact['photo'])) {
+			Logger::info('Invalid URL for photo', ['url' => $apcontact['url'], 'photo' => $apcontact['photo']]);
+			$apcontact['photo'] = null;
+		}
+
 		// When the photo is too large, try to shorten it by removing parts
 		if (strlen($apcontact['photo'] ?? '') > 255) {
 			$parts = parse_url($apcontact['photo']);

src/Model/Contact.php

@@ -2210,6 +2210,7 @@ class Contact
 		if (($uid == 0) && !$force && empty($contact['thumb']) && empty($contact['micro']) && !$create_cache) {
 			if (($contact['avatar'] != $avatar) || empty($contact['blurhash'])) {
 				$update_fields = ['avatar' => $avatar];
+				if (!Network::isLocalLink($avatar) && Network::isValidHttpUrl($avatar)) {
 					$fetchResult = HTTPSignature::fetchRaw($avatar, 0, [HttpClientOptions::ACCEPT_CONTENT => [HttpClientAccept::IMAGE]]);
 
 					$img_str = $fetchResult->getBody();
@@ -2217,8 +2218,15 @@ class Contact
 						$image = new Image($img_str, Images::getMimeTypeByData($img_str));
 						if ($image->isValid()) {
 							$update_fields['blurhash'] = $image->getBlurHash();
+						} else {
+							return;
 						}
 					}
+				} elseif (!empty($contact['blurhash'])) {
+					$update_fields['blurhash'] = null;
+				} else {
+					return;
+				}
 
 				self::update($update_fields, ['id' => $cid]);
 				Logger::info('Only update the avatar', ['id' => $cid, 'avatar' => $avatar, 'contact' => $contact]);

src/Model/Post/Media.php

@@ -180,7 +180,7 @@ class Media
 		}
 
 		// Fetch the mimetype or size if missing.
-		if (empty($media['mimetype']) || empty($media['size'])) {
+		if (Network::isValidHttpUrl($media['url']) && (empty($media['mimetype']) || empty($media['size']))) {
 			$timeout = DI::config()->get('system', 'xrd_timeout');
 			$curlResult = DI::httpClient()->head($media['url'], [HttpClientOptions::TIMEOUT => $timeout]);
 

src/Model/Tag.php

@@ -31,6 +31,7 @@ use Friendica\Database\DBA;
 use Friendica\DI;
 use Friendica\Protocol\ActivityPub;
 use Friendica\Util\DateTimeFormat;
+use Friendica\Util\Network;
 use Friendica\Util\Strings;
 
 /**
@@ -193,7 +194,7 @@ class Tag
 			} elseif (Contact::getIdForURL($url, 0, $fetch ? null : false)) {
 				$target = self::ACCOUNT;
 				Logger::debug('URL is an account', ['url' => $url]);
-			} elseif ($fetch && ($target != self::GENERAL_COLLECTION)) {
+			} elseif ($fetch && ($target != self::GENERAL_COLLECTION) && Network::isValidHttpUrl($url)) {
 				$content = ActivityPub::fetchContent($url);
 				if (!empty($content['type']) && ($content['type'] == 'OrderedCollection')) {
 					$target = self::GENERAL_COLLECTION;

src/Module/Photo.php

@@ -349,6 +349,13 @@ class Photo extends BaseModule
 				} elseif (!empty($contact['avatar'])) {
 					$url = $contact['avatar'];
 				}
+
+				// If it is a local link, we save resources by just redirecting to it.
+				if (Network::isLocalLink($url)) {
+					System::externalRedirect($url);
+					System::exit();
+				}
+
 				$mimetext = '';
 				if (!empty($url)) {
 					$mime = ParseUrl::getContentType($url, HttpClientAccept::IMAGE);
@@ -393,6 +400,10 @@ class Photo extends BaseModule
 					} else {
 						$url = Contact::getDefaultAvatar($contact ?: [], Proxy::SIZE_SMALL);
 					}
+					if (Network::isLocalLink($url)) {
+						System::externalRedirect($url);
+						System::exit();
+					}
 				}
 				return MPhoto::createPhotoForExternalResource($url, 0, $mimetext, $contact['blurhash'] ?? null, $customsize, $customsize);
 			case 'header':
@@ -401,6 +412,15 @@ class Photo extends BaseModule
 				if (empty($contact)) {
 					return false;
 				}
+
+				if (Network::isLocalLink($contact['url'])) {
+					$header_uid = User::getIdForURL($contact['url']);
+					if (empty($header_uid)) {
+						throw new HTTPException\NotFoundException();
+					}
+					return self::getBannerForUser($header_uid);
+				}
+
 				If (($contact['uid'] != 0) && empty($contact['header'])) {
 					$contact = Contact::getByURL($contact['url'], false, $fields);
 				}
@@ -408,14 +428,14 @@ class Photo extends BaseModule
 					$url = $contact['header'];
 				} else {
 					$url = Contact::getDefaultHeader($contact);
+					if (Network::isLocalLink($url)) {
+						System::externalRedirect($url);
+						System::exit();
+					}
 				}
 				return MPhoto::createPhotoForExternalResource($url);
 			case 'banner':
-				$photo = MPhoto::selectFirst([], ['scale' => 3, 'uid' => $id, 'photo-type' => MPhoto::USER_BANNER]);
+				return self::getBannerForUser($id);
-				if (!empty($photo)) {
-					return $photo;
-				}
-				return MPhoto::createPhotoForExternalResource(DI::baseUrl() . '/images/friendica-banner.jpg');
 			case 'profile':
 			case 'custom':
 				$scale = 4;
@@ -445,6 +465,11 @@ class Photo extends BaseModule
 					$default = Contact::getDefaultAvatar($contact, Proxy::SIZE_THUMB);
 			}
 
+			if (Network::isLocalLink($default)) {
+				System::externalRedirect($default);
+				System::exit();
+			}
+
 			$parts = parse_url($default);
 			if (!empty($parts['scheme']) || !empty($parts['host'])) {
 				$photo = MPhoto::createPhotoForExternalResource($default);
@@ -454,4 +479,13 @@ class Photo extends BaseModule
 		}
 		return $photo;
 	}
+
+	private static function getBannerForUser(int $uid): array
+	{
+		$photo = MPhoto::selectFirst([], ['scale' => 3, 'uid' => $uid, 'photo-type' => MPhoto::USER_BANNER]);
+		if (!empty($photo)) {
+			return $photo;
+		}
+		return MPhoto::createPhotoForImageData(file_get_contents(DI::basePath() . '/images/friendica-banner.jpg'));
+	}
 }

src/Network/Probe.php

@@ -120,6 +120,11 @@ class Probe
 
 		$numeric_fields = ['gsid', 'hide', 'account-type', 'manually-approve'];
 
+		if (!empty($data['photo']) && !Network::isValidHttpUrl($data['photo'])) {
+			Logger::info('Invalid URL for photo', ['url' => $data['url'], 'photo' => $data['photo']]);
+			unset($data['photo']);
+		}
+
 		$newdata = [];
 		foreach ($fields as $field) {
 			if (isset($data[$field])) {
@@ -755,7 +760,7 @@ class Probe
 			$result = self::zot($webfinger, $result, $baseurl);
 		}
 		if ((!$result && ($network == '')) || ($network == Protocol::PUMPIO)) {
-			$result = self::pumpio($webfinger, $addr);
+			$result = self::pumpio($webfinger, $addr, $baseurl);
 		}
 		if (empty($result['network']) && empty($ap_profile['network']) || ($network == Protocol::FEED)) {
 			$result = self::feed($uri);
@@ -1635,7 +1640,7 @@ class Probe
 	 *
 	 * @return array Profile data
 	 */
-	private static function pumpioProfileData(string $profile_link): array
+	private static function pumpioProfileData(string $profile_link, string $baseurl): array
 	{
 		$curlResult = DI::httpClient()->get($profile_link, HttpClientAccept::HTML);
 		if (!$curlResult->isSuccess() || empty($curlResult->getBody())) {
@@ -1681,6 +1686,9 @@ class Probe
 			foreach ($avatar->attributes as $attribute) {
 				if ($attribute->name == 'src') {
 					$data['photo'] = trim($attribute->value);
+					if (!empty($data['photo']) && !parse_url($data['photo'], PHP_URL_SCHEME) && !parse_url($data['photo'], PHP_URL_HOST)) {
+						$data['photo'] = $baseurl . $data['photo'];
+					}
 				}
 			}
 		}
@@ -1696,7 +1704,7 @@ class Probe
 	 *
 	 * @return array pump.io data
 	 */
-	private static function pumpio(array $webfinger, string $addr): array
+	private static function pumpio(array $webfinger, string $addr, string $baseurl): array
 	{
 		$data = [];
 		// The array is reversed to take into account the order of preference for same-rel links
@@ -1728,7 +1736,7 @@ class Probe
 			return [];
 		}
 
-		$profile_data = self::pumpioProfileData($data['url']);
+		$profile_data = self::pumpioProfileData($data['url'], $baseurl);
 
 		if (!$profile_data) {
 			return [];

src/Protocol/ActivityPub/Receiver.php

@@ -1065,6 +1065,10 @@ class Receiver
 			}
 
 			foreach ($receiver_list as $receiver) {
+				if ($receiver == 'Public') {
+					Logger::notice('Not compacted public collection found', ['activity' => $activity, 'callstack' => System::callstack(20)]);
+					$receiver = ActivityPub::PUBLIC_COLLECTION;
+				}
 				if ($receiver == self::PUBLIC_COLLECTION) {
 					$receiver = ActivityPub::PUBLIC_COLLECTION;
 				}

src/Protocol/Feed.php

@@ -1122,7 +1122,7 @@ class Feed
 		XML::addElement($doc, $entry, 'id', $item['uri']);
 		XML::addElement($doc, $entry, 'title', html_entity_decode($title, ENT_QUOTES, 'UTF-8'));
 
-		$body = OStatus::formatPicturePost($item['body'], $item['uri-id']);
+		$body = Post\Media::addAttachmentsToBody($item['uri-id'], DI::contentItem()->addSharedPost($item));
 
 		$body = BBCode::convertForUriId($item['uri-id'], $body, BBCode::ACTIVITYPUB);
 

src/Protocol/OStatus.php

@@ -976,44 +976,6 @@ class OStatus
 		}
 	}
 
-	/**
-	 * Cleans the body of a post if it contains picture links
-	 *
-	 * @param string $body The body
-	 * @param integer $uriId
-	 * @return string The cleaned body
-	 * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-	 */
-	public static function formatPicturePost(string $body, int $uriid): string
-	{
-		$siteinfo = BBCode::getAttachedData($body);
-
-		if (($siteinfo['type'] == 'photo') && (!empty($siteinfo['preview']) || !empty($siteinfo['image']))) {
-			if (isset($siteinfo['preview'])) {
-				$preview = $siteinfo['preview'];
-			} else {
-				$preview = $siteinfo['image'];
-			}
-
-			// Is it a remote picture? Then make a smaller preview here
-			$preview = Post\Link::getByLink($uriid, $preview, Proxy::SIZE_SMALL);
-
-			// Is it a local picture? Then make it smaller here
-			$preview = str_replace(['-0.jpg', '-0.png'], ['-2.jpg', '-2.png'], $preview);
-			$preview = str_replace(['-1.jpg', '-1.png'], ['-2.jpg', '-2.png'], $preview);
-
-			if (isset($siteinfo['url'])) {
-				$url = $siteinfo['url'];
-			} else {
-				$url = $siteinfo['image'];
-			}
-
-			$body = trim($siteinfo['text']) . ' [url]' . $url . "[/url]\n[img]" . $preview . '[/img]';
-		}
-
-		return $body;
-	}
-
 	/**
 	 * Adds the header elements to the XML document
 	 *
@@ -1140,51 +1102,7 @@ class OStatus
 	 */
 	public static function getAttachment(DOMDocument $doc, DOMElement $root, array $item)
 	{
-		$siteinfo = BBCode::getAttachedData($item['body']);
+		foreach (Post\Media::getByURIId($item['uri-id'], [Post\Media::AUDIO, Post\Media::IMAGE, Post\Media::VIDEO, Post\Media::DOCUMENT, Post\Media::TORRENT]) as $attachment) {
-
-		switch ($siteinfo['type']) {
-			case 'photo':
-				if (!empty($siteinfo['image'])) {
-					$imgdata = Images::getInfoFromURLCached($siteinfo['image']);
-					if ($imgdata) {
-						$attributes = [
-							'rel' => 'enclosure',
-							'href' => $siteinfo['image'],
-							'type' => $imgdata['mime'],
-							'length' => intval($imgdata['size']),
-						];
-						XML::addElement($doc, $root, 'link', '', $attributes);
-					}
-				}
-				break;
-
-			case 'video':
-				$attributes = [
-					'rel' => 'enclosure',
-					'href' => $siteinfo['url'],
-					'type' => 'text/html; charset=UTF-8',
-					'length' => '0',
-					'title' => ($siteinfo['title'] ?? '') ?: $siteinfo['url'],
-				];
-				XML::addElement($doc, $root, 'link', '', $attributes);
-				break;
-		}
-
-		if (!DI::config()->get('system', 'ostatus_not_attach_preview') && ($siteinfo['type'] != 'photo') && isset($siteinfo['image'])) {
-			$imgdata = Images::getInfoFromURLCached($siteinfo['image']);
-			if ($imgdata) {
-				$attributes = [
-					'rel' => 'enclosure',
-					'href' => $siteinfo['image'],
-					'type' => $imgdata['mime'],
-					'length' => intval($imgdata['size']),
-				];
-
-				XML::addElement($doc, $root, 'link', '', $attributes);
-			}
-		}
-
-		foreach (Post\Media::getByURIId($item['uri-id'], [Post\Media::DOCUMENT, Post\Media::TORRENT]) as $attachment) {
 			$attributes = ['rel' => 'enclosure',
 				'href' => $attachment['url'],
 				'type' => $attachment['mimetype']];
@@ -1597,7 +1515,6 @@ class OStatus
 		XML::addElement($doc, $entry, 'title', html_entity_decode($title, ENT_QUOTES, 'UTF-8'));
 
 		$body = Post\Media::addAttachmentsToBody($item['uri-id'], DI::contentItem()->addSharedPost($item));
-		$body = self::formatPicturePost($body, $item['uri-id']);
 
 		if (!empty($item['title'])) {
 			$body = '[b]' . $item['title'] . "[/b]\n\n" . $body;

src/Worker/Notifier.php

@@ -517,7 +517,11 @@ class Notifier
 
 		foreach ($contacts as $contact) {
 			// Direct delivery of local contacts
-			if (!in_array($cmd, [Delivery::RELOCATION, Delivery::SUGGESTION, Delivery::DELETION, Delivery::MAIL]) && $target_uid = User::getIdForURL($contact['url'])) {
+			if (!in_array($cmd, [Delivery::RELOCATION, Delivery::SUGGESTION, Delivery::MAIL]) && $target_uid = User::getIdForURL($contact['url'])) {
+				if ($cmd == Delivery::DELETION) {
+					Logger::info('No need to deliver deletions internally', ['uid' => $target_uid, 'guid' => $target_item['guid'], 'uri-id' => $target_item['uri-id'], 'uri' => $target_item['uri']]);
+					continue;
+				}
 				if ($target_item['origin'] || ($target_item['network'] != Protocol::ACTIVITYPUB)) {
 					if ($target_uid != $target_item['uid']) {
 						$fields = ['protocol' => Conversation::PARCEL_LOCAL_DFRN, 'direction' => Conversation::PUSH, 'post-reason' => Item::PR_DIRECT];
@@ -839,7 +843,11 @@ class Notifier
 
 			if ((count($receivers) == 1) && Network::isLocalLink($inbox)) {
 				$contact = Contact::getById($receivers[0], ['url']);
-				if (!in_array($cmd, [Delivery::RELOCATION, Delivery::SUGGESTION, Delivery::DELETION, Delivery::MAIL]) && ($target_uid = User::getIdForURL($contact['url']))) {
+				if (!in_array($cmd, [Delivery::RELOCATION, Delivery::SUGGESTION, Delivery::MAIL]) && ($target_uid = User::getIdForURL($contact['url']))) {
+					if ($cmd == Delivery::DELETION) {
+						Logger::info('No need to deliver deletions internally', ['uid' => $target_uid, 'guid' => $target_item['guid'], 'uri-id' => $target_item['uri-id'], 'uri' => $target_item['uri']]);
+						continue;
+					}
 					if ($target_item['origin'] || ($target_item['network'] != Protocol::ACTIVITYPUB)) {
 						if ($target_uid != $target_item['uid']) {
 							$fields = ['protocol' => Conversation::PARCEL_LOCAL_DFRN, 'direction' => Conversation::PUSH, 'post-reason' => Item::PR_BCC];

src/Worker/OnePoll.php

@@ -38,6 +38,7 @@ use Friendica\Protocol\ActivityPub;
 use Friendica\Protocol\Email;
 use Friendica\Protocol\Feed;
 use Friendica\Util\DateTimeFormat;
+use Friendica\Util\Network;
 use Friendica\Util\Strings;
 
 class OnePoll
@@ -157,6 +158,11 @@ class OnePoll
 			return false;
 		}
 
+		if (!Network::isValidHttpUrl($contact['poll'])) {
+			Logger::notice('Poll address is not valid', ['id' => $contact['id'], 'uid' => $contact['uid'], 'url' => $contact['url'], 'poll' => $contact['poll']]);
+			return false;
+		}
+
 		$cookiejar = tempnam(System::getTempPath(), 'cookiejar-onepoll-');
 		$curlResult = DI::httpClient()->get($contact['poll'], HttpClientAccept::FEED_XML, [HttpClientOptions::COOKIEJAR => $cookiejar]);
 		unlink($cookiejar);