leftypol
/
leftypol
3
2
Fork 1
Code Issues 37 Pull Requests 1 Projects Releases Wiki Activity
Browse Source

Better image processing. Add support for GraphicsMagick (a fork of ImageMagick) and `exiftool` (for stripping EXIF metadata quickly).

pull/40/head
Michael Foster 10 years ago
parent
a3fbff2259
commit
5300ffadf1
4 changed files with 104 additions and 29 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 30
      inc/config.php
  2. 27
      inc/functions.php
  3. 55
      inc/image.php
  4. 21
      post.php

30
inc/config.php
View File

@ -63,6 +63,10 @@
// Use `host` via shell_exec() to lookup hostnames, avoiding query timeouts. May not work on your system.
// Requires safe_mode to be disabled.
$config['dns_system'] = false;
// When executing most command-line tools (such as `convert` for ImageMagick image processing), add this
// to the environment path (seperated by :).
$config['shell_path'] = '/usr/local/bin';
/*
* ====================
@ -487,7 +491,11 @@
* 'convert' The command line version of ImageMagick (`convert`). Fixes most of the bugs in
* PHP Imagick. `convert` produces the best still thumbnails and is highly recommended.
*
* 'convert+gifsicle' Same as above, with the exception of using `gifsicle` (command line application)
* 'gm' GraphicsMagick (`gm`) is a fork of ImageMagick with many improvements. It is more
* efficient and gets thumbnailing done using fewer resources.
*
* 'convert+gifscale'
* OR 'gm+gifsicle' Same as above, with the exception of using `gifsicle` (command line application)
* instead of `convert` for resizing GIFs. It's faster and resulting animated
* thumbnails have less artifacts than if resized with ImageMagick.
*/
@ -496,10 +504,24 @@
// Command-line options passed to ImageMagick when using `convert` for thumbnailing. Don't touch the
// placement of "%s" and "%d".
$config['convert_args'] = '-background transparent %s -strip -thumbnail %dx%d -quality 65';
$config['convert_args'] = '-size %dx%d %s -thumbnail %dx%d +profile "*" %s';
// Strip EXIF metadata from JPEG files.
$config['strip_exif'] = false;
// Use the command-line `exiftool` tool to strip EXIF metadata without decompressing/recompressing JPEGs.
// Ignored when $config['redraw_image'] is true.
$config['strip_with_exiftool'] = false;
// Redraw the image to strip any excess data (commonly ZIP archives) WARNING: This might strip the
// animation of GIFs, depending on the chosen thumbnailing method. It also requires recompressing
// the image, so more processing power is required.
$config['redraw_image'] = false;
// Automatically correct the orientation of JPEG files using -auto-orient in `convert`. This only works
// when `convert` or `gm` is selected for thumbnailing. Again, requires more processing power because
// this basically does the same thing as $config['redraw_image']. (If $config['redraw_image'] is enabled,
// this value doesn't matter as $config['redraw_image'] attempts to correct orientation too.)
$config['convert_auto_orient'] = false;
// Regular expression to check for an XSS exploit with IE 6 and 7. To disable, set to false.
// Details: https://github.com/savetheinternet/Tinyboard/issues/20
@ -562,10 +584,6 @@
// Display image identification links using regex.info/exif, TinEye and Google Images.
$config['image_identification'] = false;
// Redraw the image to strip any excess data (commonly ZIP archives) WARNING: This might strip the
// animation of GIFs, depending on the chosen thumbnailing method.
$config['redraw_image'] = false;
/*
* ====================
* Board settings

27
inc/functions.php
View File

@ -79,7 +79,7 @@ function loadConfig() {
if ($config['debug']) {
if (!isset($debug)) {
$debug = array('sql' => array(), 'purge' => array(), 'cached' => array(), 'write' => array());
$debug = array('sql' => array(), 'exec' => array(), 'purge' => array(), 'cached' => array(), 'write' => array());
$debug['start'] = microtime(true);
}
}
@ -848,7 +848,7 @@ function bumpThread($id) {
if ($config['try_smarter'])
$build_pages[] = thread_find_page($id);
$query = prepare(sprintf("UPDATE ``posts_%s`` SET `bump` = :time WHERE `id` = :id AND `thread` IS NULL", $board['uri']));
$query->bindValue(':time', time(), PDO::PARAM_INT);
$query->bindValue(':id', $id, PDO::PARAM_INT);
@ -1282,7 +1282,7 @@ function buildIndex() {
for ($page = 1; $page <= $config['max_pages']; $page++) {
$filename = $board['dir'] . ($page == 1 ? $config['file_index'] : sprintf($config['file_page'], $page));
if ($config['try_smarter'] && isset($build_pages) && count($build_pages) && !in_array($page, $build_pages) && is_file($filename))
continue;
$content = index($page);
@ -1928,3 +1928,24 @@ function DNS($host) {
return $ip_addr;
}
function shell_exec_error($command) {
global $config, $debug;
if ($config['debug'])
$start = microtime(true);
$return = trim(shell_exec('PATH="' . escapeshellcmd($config['shell_path']) . ':$PATH";' . $command . ' 2>&1 && echo "TB_SUCCESS"'));
$return = preg_replace('/TB_SUCCESS$/', '', $return);
if ($config['debug']) {
$time = round((microtime(true) - $start) * 1000, 2) . 'ms';
$debug['exec'][] = array(
'command' => $command,
'time' => '~' . $time,
'response' => $return ? $return : null
);
}
return $return === 'TB_SUCCESS' ? false : $return;
}

55
inc/image.php
View File

@ -19,7 +19,7 @@ class Image {
if ($config['thumb_method'] == 'imagick') {
$classname = 'ImageImagick';
} elseif ($config['thumb_method'] == 'convert' || $config['thumb_method'] == 'convert+gifsicle') {
} elseif (in_array($config['thumb_method'], array('convert', 'convert+gifsicle', 'gm', 'gm+gifsicle'))) {
$classname = 'ImageConvert';
} else {
$classname = 'Image' . strtoupper($this->format);
@ -44,8 +44,6 @@ class Image {
public function resize($extension, $max_width, $max_height) {
global $config;
$gifsicle = false;
if ($config['thumb_method'] == 'imagick') {
$classname = 'ImageImagick';
@ -54,6 +52,13 @@ class Image {
} elseif ($config['thumb_method'] == 'convert+gifsicle') {
$classname = 'ImageConvert';
$gifsicle = true;
} elseif ($config['thumb_method'] == 'gm') {
$classname = 'ImageConvert';
$gm = true;
} elseif ($config['thumb_method'] == 'gm+gifsicle') {
$classname = 'ImageConvert';
$gm = true;
$gifsicle = true;
} else {
$classname = 'Image' . strtoupper($extension);
if (!class_exists($classname)) {
@ -81,7 +86,6 @@ class Image {
$height = $max_height;
}
$thumb->gifsicle = $gifsicle;
$thumb->_resize($this->image->image, $width, $height);
return $thumb;
@ -227,15 +231,20 @@ class ImageImagick extends ImageBase {
class ImageConvert extends ImageBase {
public $width, $height, $temp, $gifsicle;
public $width, $height, $temp, $gm = false, $gifsicle = false;
public function init() {
global $config;
if ($config['thumb_method'] == 'gm' || $config['thumb_method'] == 'gm+gifsicle')
$this->gm = true;
if ($config['thumb_method'] == 'convert+gifsicle' || $config['thumb_method'] == 'gm+gifsicle')
$this->gifsicle = true;
$this->temp = false;
}
public function from() {
$size = trim(shell_exec('identify -format "%w %h" ' . escapeshellarg($this->src . '[0]')));
public function from() {
$size = shell_exec_error(($this->gm ? 'gm ' : '') . 'identify -format "%w %h" ' . escapeshellarg($this->src . '[0]'));
if (preg_match('/^(\d+) (\d+)$/', $size, $m)) {
$this->width = $m[1];
$this->height = $m[2];
@ -251,9 +260,17 @@ class ImageConvert extends ImageBase {
if (!$this->temp) {
if ($config['strip_exif']) {
shell_exec('convert ' . escapeshellarg($this->src) . ' -auto-orient -strip ' . escapeshellarg($src));
if($error = shell_exec_error(($this->gm ? 'gm ' : '') . 'convert ' .
escapeshellarg($this->src) . ' -auto-orient -strip ' . escapeshellarg($src))) {
$this->destroy();
error('Failed to resize image!', null, $error);
}
} else {
shell_exec('convert ' . escapeshellarg($this->src) . ' -auto-orient ' . escapeshellarg($src));
if($error = shell_exec_error(($this->gm ? 'gm ' : '') . 'convert ' .
escapeshellarg($this->src) . ' -auto-orient ' . escapeshellarg($src))) {
$this->destroy();
error('Failed to resize image!', null, $error);
}
}
} else {
rename($this->temp, $src);
@ -289,13 +306,25 @@ class ImageConvert extends ImageBase {
escapeshellarg($this->temp) . '2>&1 &&echo $?') !== '0') || !file_exists($this->temp))
error('Failed to resize image!', null, $error);
} else {
if (trim($error = shell_exec('convert ' . sprintf($config['convert_args'], '', $this->width, $this->height) . ' ' .
escapeshellarg($this->src) . ' ' . escapeshellarg($this->temp) . ' 2>&1 &&echo $?')) !== '0' || !file_exists($this->temp))
if ($error = shell_exec_error(($this->gm ? 'gm ' : '') . 'convert ' .
sprintf($config['convert_args'],
$this->width,
$this->height,
escapeshellarg($this->src),
$this->width,
$this->height,
escapeshellarg($this->temp))) || !file_exists($this->temp))
error('Failed to resize image!', null, $error);
}
} else {
if (trim($error = shell_exec('convert ' . sprintf($config['convert_args'], '-flatten', $this->width, $this->height) . ' ' .
escapeshellarg($this->src . '[0]') . " " . escapeshellarg($this->temp) . ' 2>&1 &&echo $?')) !== '0' || !file_exists($this->temp))
if ($error = shell_exec_error(($this->gm ? 'gm ' : '') . 'convert ' .
sprintf($config['convert_args'],
$this->width,
$this->height,
escapeshellarg($this->src . '[0]'),
$this->width,
$this->height,
escapeshellarg($this->temp))) || !file_exists($this->temp))
error('Failed to resize image!', null, $error);
}
}

21
post.php
View File

@ -447,14 +447,17 @@ if (isset($_POST['delete'])) {
}
if ($post['extension'] == 'jpg' || $post['extension'] == 'jpeg') {
if ($config['convert_auto_orient'] && ($post['extension'] == 'jpg' || $post['extension'] == 'jpeg')) {
// The following code corrects the image orientation.
// Currently only works with the 'convert' option selected but it could easily be expanded to work with the rest if you can be bothered.
if (!($config['redraw_image'] || ($config['strip_exif'] && ($post['extension'] == 'jpg' || $post['extension'] == 'jpeg')))) {
if ($config['thumb_method'] == 'convert' || $config['thumb_method'] == 'convert+gifsicle') {
if (in_array($config['thumb_method'], array('convert', 'convert+gifsicle', 'gm', 'gm+gifsicle'))) {
$exif = exif_read_data($upload);
$gm = in_array($config['thumb_method'], array('gm', 'gm+gifsicle'));
if (isset($exif['Orientation']) && $exif['Orientation'] != 1) {
shell_exec('convert ' . escapeshellarg($upload) . ' -auto-orient ' . escapeshellarg($upload));
if($error = shell_exec_error(($gm ? 'gm ' : '') . 'convert ' .
escapeshellarg($upload) . ' -auto-orient ' . escapeshellarg($upload)))
error('Could not auto-orient image!', null, $error);
}
}
}
@ -462,7 +465,6 @@ if (isset($_POST['delete'])) {
// create image object
$image = new Image($upload, $post['extension']);
if ($image->size->width > $config['max_width'] || $image->size->height > $config['max_height']) {
$image->delete();
error($config['error']['maxsize']);
@ -503,8 +505,13 @@ if (isset($_POST['delete'])) {
}
if ($config['redraw_image'] || ($config['strip_exif'] && ($post['extension'] == 'jpg' || $post['extension'] == 'jpeg'))) {
$image->to($post['file']);
$dont_copy_file = true;
if (!$config['redraw_image'] && $config['strip_with_exiftool']) {
if($error = shell_exec_error('exiftool -q -all= ' . escapeshellarg($upload)))
error('Could not strip EXIF metadata!', null, $error);
} else {
$image->to($post['file']);
$dont_copy_file = true;
}
}
$image->destroy();
} else {
@ -518,7 +525,7 @@ if (isset($_POST['delete'])) {
}
if (!isset($dont_copy_file) || !$dont_copy_file) {
if ([email protected]_uploaded_file($_FILES['file']['tmp_name'], $post['file']))
if ([email protected]_uploaded_file($upload, $post['file']))
error($config['error']['nomove']);
}
}

Write Preview
Loading…
Cancel
Save