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check if file exists before calling unlink (#327)

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* check if file exists before calling unlink

file_exists has a known vulnerability.
Replacing with the internal one.

Co-authored-by: Nicola Asuni <nicolaasuni@users.noreply.github.com>
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mtreuberg 2021-03-27 10:08:05 +01:00 committed by GitHub
parent 14fd6779f3
commit 978eb8c824
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1 changed files with 1 additions and 1 deletions
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tcpdf.php
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@ -7806,7 +7806,7 @@ class TCPDF {
}
if (isset($this->imagekeys)) {
foreach($this->imagekeys as $file) {
if (strpos($file, K_PATH_CACHE) === 0) {
if (strpos($file, K_PATH_CACHE) === 0 && TCPDF_STATIC::file_exists($file)) {
@unlink($file);
}
}