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disallow negative mtime in dav search #10835

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Aug 24, 2018
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disallow negative mtime in dav search #10835

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2 changes: 1 addition & 1 deletion apps/dav/lib/Files/FileSearchBackend.php
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Original file line number Diff line number Diff line change
Expand Up @@ -352,7 +352,7 @@ private function castValue(SearchPropertyDefinition $property, $value) {
return 0 + $value;
case SearchPropertyDefinition::DATATYPE_DATETIME:
if (is_numeric($value)) {
return 0 + $value;
return max(0, 0 + $value);
}
$date = \DateTime::createFromFormat(\DateTime::ATOM, $value);
return ($date instanceof \DateTime) ? $date->getTimestamp() : 0;
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I currently have the situation that every time I start the Nextcloud iOS App, the error "InvalidArgumentException: Invalid type for field mtime" is written to my Nextcloud log, which seems to be connected to #10835. Because the error is caused by method castValue of class FileSearchBackend: It casts the timestamp "0001-12-30T00:49:56+00:49:56" to boolean false. According to the first user contributed note on this page , this happens for timestamps older than the unix epoch. I have very little PHP experience but I fixed this problem by the following change in line 358 , comments or better workarounds are highly appreciated, thanks in advance!
return ($date instanceof \DateTime && $date->getTimestamp()!= false )? $date->getTimestamp() : 0);
stacktrace_InvalidArgumentException.txt

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@cviereck Could we ask you to open this as a new issue so it does not get lost. Thanks for the feedback and debugging.

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Additionally, feel free to make a PR with the proposed changed.

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