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[stable25] Add restrictions when downloading to resolve with opengraph link provider #36022

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Merged
merged 1 commit into from
Jan 6, 2023
Merged

[stable25] Add restrictions when downloading to resolve with opengraph link provider #36022

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16 changes: 16 additions & 0 deletions lib/private/Collaboration/Reference/LinkReferenceProvider.php
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Original file line number Diff line number Diff line change
Expand Up @@ -104,6 +104,22 @@ private function fetchReference(Reference $reference): void {
}

$client = $this->clientService->newClient();
try {
$headResponse = $client->head($reference->getId(), [ 'timeout' => 10 ]);
} catch (\Exception $e) {
$this->logger->debug('Failed to perform HEAD request to get target metadata', ['exception' => $e]);
return;
}
$linkContentLength = $headResponse->getHeader('Content-Length');
if (is_numeric($linkContentLength) && (int) $linkContentLength > 5 * 1024 * 1024) {
$this->logger->debug('Skip resolving links pointing to content length > 5 MB');
return;
}
$linkContentType = $headResponse->getHeader('Content-Type');
if ($linkContentType !== 'text/html') {
$this->logger->debug('Skip resolving links pointing to content type that is not "text/html"');
return;
}
try {
$response = $client->get($reference->getId(), [ 'timeout' => 10 ]);
} catch (\Exception $e) {
Expand Down