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Code Issues Releases Wiki Activity

StoreRemoteMedia avoids too large files

This commit is contained in:
Mikael Nordfeldth 2016-06-24 15:47:02 +02:00
parent 0adb7af9a0
commit f1e3314bb7
1 changed files with 28 additions and 6 deletions
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34
plugins/StoreRemoteMedia/StoreRemoteMediaPlugin.php
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@ -77,22 +77,44 @@ class StoreRemoteMediaPlugin extends Plugin
return true;
}
if (!$this->checkWhiteList($file->getUrl()) ||
!$this->checkBlackList($file->getUrl())) {
$remoteUrl = $file->getUrl();
if (!$this->checkWhiteList($remoteUrl) ||
!$this->checkBlackList($remoteUrl)) {
return true;
}
// First we download the file to memory and test whether it's actually an image file
common_debug(sprintf('Downloading remote file id==%u with URL: %s', $file->getID(), _ve($file->getUrl())));
try {
$imgData = HTTPClient::quickGet($file->getUrl());
$http = new HTTPClient();
common_debug(sprintf('Performing HEAD request for remote file id==%u to avoid unnecessarily downloading too large files. URL: %s', $file->getID(), $remoteUrl));
$head = $http->head($remoteUrl);
$headers = $head->getHeader();
if (!isset($headers['content-length'])) {
// file size not specified on remote server
common_debug(sprintf('%s: Ignoring remote media because we did not get a content length for file id==%u', __CLASS__, $file->getID()));
return true;
} elseif (intval($headers['content-length']) > common_config('attachments', 'file_quota')) {
// file too big
common_debug(sprintf('%s: Skipping remote media because content length (%u) is larger than file_quota (%u) for file id==%u', __CLASS__, intval($headers['content-length']), common_config('attachments', 'file_quota'), $file->getID()));
return true;
}
$remoteUrl = $head->effectiveUrl; // to avoid going through redirects again
if (!$this->checkBlackList($remoteUrl)) {
common_log(LOG_WARN, sprintf('%s: Non-blacklisted URL %s redirected to blacklisted URL %s', __CLASS__, $file->getUrl(), $remoteUrl));
return true;
}
// Then we download the file to memory and test whether it's actually an image file
common_debug(sprintf('Downloading remote file id==%u with effective URL: %s', $file->getID(), _ve($remoteUrl)));
$imgData = $http->get($remoteUrl);
} catch (HTTP_Request2_ConnectionException $e) {
common_log(LOG_ERR, __CLASS__.': quickGet on URL: '._ve($file->getUrl()).' threw exception: '.$e->getMessage());
return true;
}
$info = @getimagesizefromstring($imgData);
if ($info === false) {
throw new UnsupportedMediaException(_('Remote file format was not identified as an image.'), $file->getUrl());
throw new UnsupportedMediaException(_('Remote file format was not identified as an image.'), $remoteUrl);
} elseif (!$info[0] || !$info[1]) {
throw new UnsupportedMediaException(_('Image file had impossible geometry (0 width or height)'));
}