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| author | Joachim Bauch <bauch@struktur.de> | 2021-12-16 09:17:11 +0100 |
|---|---|---|
| committer | backportbot[bot] <backportbot[bot]@users.noreply.github.com> | 2022-01-11 14:49:08 +0000 |
| commit | cebac86ecdd4fb5220225b5625d3b6132dbe7a68 (patch) | |
| tree | 7192d8268c1d6c0efbc6a002fc8ce19c145d0637 /config | |
| parent | 4846f5d33eb8e2379d9a24cd9a68bfb65b15c11f (diff) | |
| download | nextcloud-server-cebac86ecdd4fb5220225b5625d3b6132dbe7a68.tar.gz nextcloud-server-cebac86ecdd4fb5220225b5625d3b6132dbe7a68.zip | |
Prevent loading images that would require too much memory.
For most image formats, the header specifies the width/height.
PHP allocates an image object from that size, even if the actual
image data is much smaller. This image object size is not limited
by the limit configured in PHP.
The memory limit can be configured through "config.php" setting
"preview_max_memory" and defaults to 128 MBytes which should be
enough for most images without filling up all memory.
Signed-off-by: Joachim Bauch <bauch@struktur.de>
Diffstat (limited to 'config')
| -rw-r--r-- | config/config.sample.php | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/config/config.sample.php b/config/config.sample.php index 4a28748b69c..9f81cf3d1c1 100644 --- a/config/config.sample.php +++ b/config/config.sample.php @@ -1044,6 +1044,16 @@ $CONFIG = [ 'preview_max_filesize_image' => 50, /** + * max memory for generating image previews with imagegd (default behavior) + * Reads the image dimensions from the header and assumes 32 bits per pixel. + * If creating the image would allocate more memory, preview generation will + * be disabled and the default mimetype icon is shown. Set to -1 for no limit. + * + * Defaults to ``128`` megabytes + */ +'preview_max_memory' => 128, + +/** * custom path for LibreOffice/OpenOffice binary * * |