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Ensure log message is UTF-8 encoded 

PHP's json_encode only accept proper UTF-8 strings, loop over all
elements to ensure that they are properly UTF-8 compliant or convert
them manually.

Without this somebody passing an invalid User Agent may make json_encode
return false which will get logged as empty newline.

Signed-off-by: Lukas Reschke <lukas@statuscode.ch>
This commit is contained in:
Lukas Reschke 2017-08-17 15:01:50 +02:00
parent de8fe9cbd9
commit 179b850e4d
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1 changed files with 12 additions and 1 deletions
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13
lib/private/Log/File.php
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@ -117,7 +117,18 @@ class File {
'userAgent',
'version'
);
$entry = json_encode($entry);
// PHP's json_encode only accept proper UTF-8 strings, loop over all
// elements to ensure that they are properly UTF-8 compliant or convert
// them manually.
foreach($entry as $key => $value) {
if(is_string($value)) {
$testEncode = json_encode($value);
if($testEncode === false) {
$entry[$key] = utf8_encode($value);
}
}
}
$entry = json_encode($entry, JSON_PARTIAL_OUTPUT_ON_ERROR);
$handle = @fopen(self::$logFile, 'a');
if ((fileperms(self::$logFile) & 0777) != 0640) {
@chmod(self::$logFile, 0640);