From 1cdcafc7fca95bf06d4c6512aa96ce5d26cfe424 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Fri, 07 Jun 2013 07:12:04 -0400
Subject: [PATCH] Added more error checking in rcube_image::resize()
---
program/lib/Roundcube/rcube_image.php | 66 +++++++++++++++++++++++---------
1 files changed, 47 insertions(+), 19 deletions(-)
diff --git a/program/lib/Roundcube/rcube_image.php b/program/lib/Roundcube/rcube_image.php
index b72a24c..09bb4e8 100644
--- a/program/lib/Roundcube/rcube_image.php
+++ b/program/lib/Roundcube/rcube_image.php
@@ -2,8 +2,6 @@
/*
+-----------------------------------------------------------------------+
- | program/include/rcube_image.php |
- | |
| This file is part of the Roundcube Webmail client |
| Copyright (C) 2005-2012, The Roundcube Dev Team |
| Copyright (C) 2011-2012, Kolab Systems AG |
@@ -14,7 +12,6 @@
| |
| PURPOSE: |
| Image resizer and converter |
- | |
+-----------------------------------------------------------------------+
| Author: Thomas Bruederli <roundcube@gmail.com> |
| Author: Aleksander Machniak <alec@alec.pl> |
@@ -80,7 +77,8 @@
}
/**
- * Resize image to a given size
+ * Resize image to a given size. Use only to shrink an image.
+ * If an image is smaller than specified size it will be not resized.
*
* @param int $size Max width/height size
* @param string $filename Output filename
@@ -94,6 +92,10 @@
$rcube = rcube::get_instance();
$convert = $rcube->config->get('im_convert_path', false);
$props = $this->props();
+
+ if (empty($props)) {
+ return false;
+ }
if (!$filename) {
$filename = $this->image_file;
@@ -126,24 +128,43 @@
}
if ($result === '') {
+ @chmod($filename, 0600);
return $type;
}
}
// use GD extension
- $gd_types = array(IMAGETYPE_JPEG, IMAGETYPE_GIF, IMAGETYPE_PNG);
- if ($props['gd_type'] && in_array($props['gd_type'], $gd_types)) {
- if ($props['gd_type'] == IMAGETYPE_JPEG) {
+ if ($props['gd_type']) {
+ if ($props['gd_type'] == IMAGETYPE_JPEG && function_exists('imagecreatefromjpeg')) {
$image = imagecreatefromjpeg($this->image_file);
+ $type = 'jpg';
}
- elseif($props['gd_type'] == IMAGETYPE_GIF) {
+ else if($props['gd_type'] == IMAGETYPE_GIF && function_exists('imagecreatefromgif')) {
$image = imagecreatefromgif($this->image_file);
+ $type = 'gid';
}
- elseif($props['gd_type'] == IMAGETYPE_PNG) {
+ else if($props['gd_type'] == IMAGETYPE_PNG && function_exists('imagecreatefrompng')) {
$image = imagecreatefrompng($this->image_file);
+ $type = 'png';
+ }
+ else {
+ // @TODO: print error to the log?
+ return false;
}
- $scale = $size / max($props['width'], $props['height']);
+ if ($image === false) {
+ return false;
+ }
+
+ $scale = $size / max($props['width'], $props['height']);
+
+ // Imagemagick resize is implemented in shrinking mode (see -resize argument above)
+ // we do the same here, if an image is smaller than specified size
+ // we do nothing but copy original file to destination file
+ if ($scale > 1) {
+ return $this->image_file == $filename || copy($this->image_file, $filename) ? $type : false;
+ }
+
$width = $props['width'] * $scale;
$height = $props['height'] * $scale;
@@ -162,18 +183,16 @@
if ($props['gd_type'] == IMAGETYPE_JPEG) {
$result = imagejpeg($image, $filename, 75);
- $type = 'jpg';
}
elseif($props['gd_type'] == IMAGETYPE_GIF) {
$result = imagegif($image, $filename);
- $type = 'gid';
}
elseif($props['gd_type'] == IMAGETYPE_PNG) {
$result = imagepng($image, $filename, 6, PNG_ALL_FILTERS);
- $type = 'png';
}
if ($result) {
+ @chmod($filename, 0600);
return $type;
}
}
@@ -214,23 +233,27 @@
$result = rcube::exec($convert . ' 2>&1 -colorspace RGB -quality 75 {in} {type}:{out}', $p);
if ($result === '') {
+ @chmod($filename, 0600);
return true;
}
}
// use GD extension (TIFF isn't supported)
- $props = $this->props();
- $gd_types = array(IMAGETYPE_JPEG, IMAGETYPE_GIF, IMAGETYPE_PNG);
+ $props = $this->props();
- if ($props['gd_type'] && in_array($props['gd_type'], $gd_types)) {
- if ($props['gd_type'] == IMAGETYPE_JPEG) {
+ if ($props['gd_type']) {
+ if ($props['gd_type'] == IMAGETYPE_JPEG && function_exists('imagecreatefromjpeg')) {
$image = imagecreatefromjpeg($this->image_file);
}
- else if ($props['gd_type'] == IMAGETYPE_GIF) {
+ else if ($props['gd_type'] == IMAGETYPE_GIF && function_exists('imagecreatefromgif')) {
$image = imagecreatefromgif($this->image_file);
}
- else if ($props['gd_type'] == IMAGETYPE_PNG) {
+ else if ($props['gd_type'] == IMAGETYPE_PNG && function_exists('imagecreatefrompng')) {
$image = imagecreatefrompng($this->image_file);
+ }
+ else {
+ // @TODO: print error to the log?
+ return false;
}
if ($type == self::TYPE_JPG) {
@@ -242,6 +265,11 @@
else if ($type == self::TYPE_PNG) {
$result = imagepng($image, $filename, 6, PNG_ALL_FILTERS);
}
+
+ if ($result) {
+ @chmod($filename, 0600);
+ return true;
+ }
}
// @TODO: print error to the log?
--
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