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friendica
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Avoid local network communication / invalid url requests

This commit is contained in:
Michael 2023-01-27 05:55:45 +00:00
parent 6bedd190b9
commit ba4860b787
12 changed files with 96 additions and 105 deletions
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2
src/Content/Text/BBCode.php
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@ -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]);

5
src/Model/APContact.php
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@ -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']);

20
src/Model/Contact.php
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@ -2210,14 +2210,22 @@ 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];
$fetchResult = HTTPSignature::fetchRaw($avatar, 0, [HttpClientOptions::ACCEPT_CONTENT => [HttpClientAccept::IMAGE]]);
if (!Network::isLocalLink($avatar) && Network::isValidHttpUrl($avatar)) {
$fetchResult = HTTPSignature::fetchRaw($avatar, 0, [HttpClientOptions::ACCEPT_CONTENT => [HttpClientAccept::IMAGE]]);
$img_str = $fetchResult->getBody();
if (!empty($img_str)) {
$image = new Image($img_str, Images::getMimeTypeByData($img_str));
if ($image->isValid()) {
$update_fields['blurhash'] = $image->getBlurHash();
$img_str = $fetchResult->getBody();
if (!empty($img_str)) {
$image = new Image($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]);

2
src/Model/Post/Media.php
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@ -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]);

3
src/Model/Tag.php
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@ -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;

44
src/Module/Photo.php
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@ -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' => $id, 'photo-type' => MPhoto::USER_BANNER]);
if (!empty($photo)) {
return $photo;
}
return MPhoto::createPhotoForExternalResource(DI::baseUrl() . '/images/friendica-banner.jpg');
return self::getBannerForUser($id);
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'));
}
}

16
src/Network/Probe.php
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@ -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 [];

4
src/Protocol/ActivityPub/Receiver.php
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@ -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;
}

2
src/Protocol/Feed.php
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@ -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);

85
src/Protocol/OStatus.php
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@ -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']);
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 $attachment) {
foreach (Post\Media::getByURIId($item['uri-id'], [Post\Media::AUDIO, Post\Media::IMAGE, Post\Media::VIDEO, 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;

12
src/Worker/Notifier.php
View File

@ -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];

6
src/Worker/OnePoll.php
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@ -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);