aboutsummaryrefslogtreecommitdiffstats
path: root/lib/private/legacy/OC_Image.php
diff options
context:
space:
mode:
Diffstat (limited to 'lib/private/legacy/OC_Image.php')
-rw-r--r--lib/private/legacy/OC_Image.php1436
1 files changed, 0 insertions, 1436 deletions
diff --git a/lib/private/legacy/OC_Image.php b/lib/private/legacy/OC_Image.php
deleted file mode 100644
index 3988eb8eaa5..00000000000
--- a/lib/private/legacy/OC_Image.php
+++ /dev/null
@@ -1,1436 +0,0 @@
-<?php
-/**
- * @copyright Copyright (c) 2016, ownCloud, Inc.
- *
- * @author Bartek Przybylski <bart.p.pl@gmail.com>
- * @author Bart Visscher <bartv@thisnet.nl>
- * @author Björn Schießle <bjoern@schiessle.org>
- * @author Byron Marohn <combustible@live.com>
- * @author Côme Chilliet <come.chilliet@nextcloud.com>
- * @author Christopher Schäpers <kondou@ts.unde.re>
- * @author Christoph Wurst <christoph@winzerhof-wurst.at>
- * @author Georg Ehrke <oc.list@georgehrke.com>
- * @author J0WI <J0WI@users.noreply.github.com>
- * @author j-ed <juergen@eisfair.org>
- * @author Joas Schilling <coding@schilljs.com>
- * @author Johannes Willnecker <johannes@willnecker.com>
- * @author Jörn Friedrich Dreyer <jfd@butonic.de>
- * @author Julius Härtl <jus@bitgrid.net>
- * @author Lukas Reschke <lukas@statuscode.ch>
- * @author Morris Jobke <hey@morrisjobke.de>
- * @author Olivier Paroz <github@oparoz.com>
- * @author Robin Appelman <robin@icewind.nl>
- * @author Roeland Jago Douma <roeland@famdouma.nl>
- * @author Samuel CHEMLA <chemla.samuel@gmail.com>
- * @author Thomas Müller <thomas.mueller@tmit.eu>
- * @author Thomas Tanghus <thomas@tanghus.net>
- *
- * @license AGPL-3.0
- *
- * This code is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License, version 3,
- * as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License, version 3,
- * along with this program. If not, see <http://www.gnu.org/licenses/>
- *
- */
-use OCP\IImage;
-
-/**
- * Class for basic image manipulation
- */
-class OC_Image implements \OCP\IImage {
-
- // Default memory limit for images to load (128 MBytes).
- protected const DEFAULT_MEMORY_LIMIT = 128;
-
- /** @var false|resource|\GdImage */
- protected $resource = false; // tmp resource.
- /** @var int */
- protected $imageType = IMAGETYPE_PNG; // Default to png if file type isn't evident.
- /** @var string */
- protected $mimeType = 'image/png'; // Default to png
- /** @var int */
- protected $bitDepth = 24;
- /** @var null|string */
- protected $filePath = null;
- /** @var finfo */
- private $fileInfo;
- /** @var \OCP\ILogger */
- private $logger;
- /** @var \OCP\IConfig */
- private $config;
- /** @var array */
- private $exif;
-
- /**
- * Constructor.
- *
- * @param resource|string|\GdImage $imageRef The path to a local file, a base64 encoded string or a resource created by
- * an imagecreate* function.
- * @param \OCP\ILogger $logger
- * @param \OCP\IConfig $config
- * @throws \InvalidArgumentException in case the $imageRef parameter is not null
- */
- public function __construct($imageRef = null, \OCP\ILogger $logger = null, \OCP\IConfig $config = null) {
- $this->logger = $logger;
- if ($logger === null) {
- $this->logger = \OC::$server->getLogger();
- }
- $this->config = $config;
- if ($config === null) {
- $this->config = \OC::$server->getConfig();
- }
-
- if (\OC_Util::fileInfoLoaded()) {
- $this->fileInfo = new finfo(FILEINFO_MIME_TYPE);
- }
-
- if ($imageRef !== null) {
- throw new \InvalidArgumentException('The first parameter in the constructor is not supported anymore. Please use any of the load* methods of the image object to load an image.');
- }
- }
-
- /**
- * Determine whether the object contains an image resource.
- *
- * @return bool
- */
- public function valid() {
- if (is_resource($this->resource)) {
- return true;
- }
- if (is_object($this->resource) && get_class($this->resource) === \GdImage::class) {
- return true;
- }
-
- return false;
- }
-
- /**
- * Returns the MIME type of the image or an empty string if no image is loaded.
- *
- * @return string
- */
- public function mimeType() {
- return $this->valid() ? $this->mimeType : '';
- }
-
- /**
- * Returns the width of the image or -1 if no image is loaded.
- *
- * @return int
- */
- public function width() {
- if ($this->valid()) {
- $width = imagesx($this->resource);
- if ($width !== false) {
- return $width;
- }
- }
- return -1;
- }
-
- /**
- * Returns the height of the image or -1 if no image is loaded.
- *
- * @return int
- */
- public function height() {
- if ($this->valid()) {
- $height = imagesy($this->resource);
- if ($height !== false) {
- return $height;
- }
- }
- return -1;
- }
-
- /**
- * Returns the width when the image orientation is top-left.
- *
- * @return int
- */
- public function widthTopLeft() {
- $o = $this->getOrientation();
- $this->logger->debug('OC_Image->widthTopLeft() Orientation: ' . $o, ['app' => 'core']);
- switch ($o) {
- case -1:
- case 1:
- case 2: // Not tested
- case 3:
- case 4: // Not tested
- return $this->width();
- case 5: // Not tested
- case 6:
- case 7: // Not tested
- case 8:
- return $this->height();
- }
- return $this->width();
- }
-
- /**
- * Returns the height when the image orientation is top-left.
- *
- * @return int
- */
- public function heightTopLeft() {
- $o = $this->getOrientation();
- $this->logger->debug('OC_Image->heightTopLeft() Orientation: ' . $o, ['app' => 'core']);
- switch ($o) {
- case -1:
- case 1:
- case 2: // Not tested
- case 3:
- case 4: // Not tested
- return $this->height();
- case 5: // Not tested
- case 6:
- case 7: // Not tested
- case 8:
- return $this->width();
- }
- return $this->height();
- }
-
- /**
- * Outputs the image.
- *
- * @param string $mimeType
- * @return bool
- */
- public function show($mimeType = null) {
- if ($mimeType === null) {
- $mimeType = $this->mimeType();
- }
- header('Content-Type: ' . $mimeType);
- return $this->_output(null, $mimeType);
- }
-
- /**
- * Saves the image.
- *
- * @param string $filePath
- * @param string $mimeType
- * @return bool
- */
-
- public function save($filePath = null, $mimeType = null) {
- if ($mimeType === null) {
- $mimeType = $this->mimeType();
- }
- if ($filePath === null) {
- if ($this->filePath === null) {
- $this->logger->error(__METHOD__ . '(): called with no path.', ['app' => 'core']);
- return false;
- } else {
- $filePath = $this->filePath;
- }
- }
- return $this->_output($filePath, $mimeType);
- }
-
- /**
- * Outputs/saves the image.
- *
- * @param string $filePath
- * @param string $mimeType
- * @return bool
- * @throws Exception
- */
- private function _output($filePath = null, $mimeType = null) {
- if ($filePath) {
- if (!file_exists(dirname($filePath))) {
- mkdir(dirname($filePath), 0777, true);
- }
- $isWritable = is_writable(dirname($filePath));
- if (!$isWritable) {
- $this->logger->error(__METHOD__ . '(): Directory \'' . dirname($filePath) . '\' is not writable.', ['app' => 'core']);
- return false;
- } elseif ($isWritable && file_exists($filePath) && !is_writable($filePath)) {
- $this->logger->error(__METHOD__ . '(): File \'' . $filePath . '\' is not writable.', ['app' => 'core']);
- return false;
- }
- }
- if (!$this->valid()) {
- return false;
- }
-
- $imageType = $this->imageType;
- if ($mimeType !== null) {
- switch ($mimeType) {
- case 'image/gif':
- $imageType = IMAGETYPE_GIF;
- break;
- case 'image/jpeg':
- $imageType = IMAGETYPE_JPEG;
- break;
- case 'image/png':
- $imageType = IMAGETYPE_PNG;
- break;
- case 'image/x-xbitmap':
- $imageType = IMAGETYPE_XBM;
- break;
- case 'image/bmp':
- case 'image/x-ms-bmp':
- $imageType = IMAGETYPE_BMP;
- break;
- default:
- throw new Exception('\OC_Image::_output(): "' . $mimeType . '" is not supported when forcing a specific output format');
- }
- }
-
- switch ($imageType) {
- case IMAGETYPE_GIF:
- $retVal = imagegif($this->resource, $filePath);
- break;
- case IMAGETYPE_JPEG:
- $retVal = imagejpeg($this->resource, $filePath, $this->getJpegQuality());
- break;
- case IMAGETYPE_PNG:
- $retVal = imagepng($this->resource, $filePath);
- break;
- case IMAGETYPE_XBM:
- if (function_exists('imagexbm')) {
- $retVal = imagexbm($this->resource, $filePath);
- } else {
- throw new Exception('\OC_Image::_output(): imagexbm() is not supported.');
- }
-
- break;
- case IMAGETYPE_WBMP:
- $retVal = imagewbmp($this->resource, $filePath);
- break;
- case IMAGETYPE_BMP:
- $retVal = imagebmp($this->resource, $filePath, $this->bitDepth);
- break;
- default:
- $retVal = imagepng($this->resource, $filePath);
- }
- return $retVal;
- }
-
- /**
- * Prints the image when called as $image().
- */
- public function __invoke() {
- return $this->show();
- }
-
- /**
- * @param resource|\GdImage $resource
- * @throws \InvalidArgumentException in case the supplied resource does not have the type "gd"
- */
- public function setResource($resource) {
- // For PHP<8
- if (is_resource($resource) && get_resource_type($resource) === 'gd') {
- $this->resource = $resource;
- return;
- }
- // PHP 8 has real objects for GD stuff
- if (is_object($resource) && get_class($resource) === \GdImage::class) {
- $this->resource = $resource;
- return;
- }
- throw new \InvalidArgumentException('Supplied resource is not of type "gd".');
- }
-
- /**
- * @return false|resource|\GdImage Returns the image resource if any
- */
- public function resource() {
- return $this->resource;
- }
-
- /**
- * @return string Returns the mimetype of the data. Returns the empty string
- * if the data is not valid.
- */
- public function dataMimeType() {
- if (!$this->valid()) {
- return '';
- }
-
- switch ($this->mimeType) {
- case 'image/png':
- case 'image/jpeg':
- case 'image/gif':
- return $this->mimeType;
- default:
- return 'image/png';
- }
- }
-
- /**
- * @return null|string Returns the raw image data.
- */
- public function data() {
- if (!$this->valid()) {
- return null;
- }
- ob_start();
- switch ($this->mimeType) {
- case "image/png":
- $res = imagepng($this->resource);
- break;
- case "image/jpeg":
- $quality = $this->getJpegQuality();
- if ($quality !== null) {
- $res = imagejpeg($this->resource, null, $quality);
- } else {
- $res = imagejpeg($this->resource);
- }
- break;
- case "image/gif":
- $res = imagegif($this->resource);
- break;
- default:
- $res = imagepng($this->resource);
- $this->logger->info('OC_Image->data. Could not guess mime-type, defaulting to png', ['app' => 'core']);
- break;
- }
- if (!$res) {
- $this->logger->error('OC_Image->data. Error getting image data.', ['app' => 'core']);
- }
- return ob_get_clean();
- }
-
- /**
- * @return string - base64 encoded, which is suitable for embedding in a VCard.
- */
- public function __toString() {
- return base64_encode($this->data());
- }
-
- /**
- * @return int|null
- */
- protected function getJpegQuality() {
- $quality = $this->config->getAppValue('preview', 'jpeg_quality', 90);
- if ($quality !== null) {
- $quality = min(100, max(10, (int) $quality));
- }
- return $quality;
- }
-
- /**
- * (I'm open for suggestions on better method name ;)
- * Get the orientation based on EXIF data.
- *
- * @return int The orientation or -1 if no EXIF data is available.
- */
- public function getOrientation() {
- if ($this->exif !== null) {
- return $this->exif['Orientation'];
- }
-
- if ($this->imageType !== IMAGETYPE_JPEG) {
- $this->logger->debug('OC_Image->fixOrientation() Image is not a JPEG.', ['app' => 'core']);
- return -1;
- }
- if (!is_callable('exif_read_data')) {
- $this->logger->debug('OC_Image->fixOrientation() Exif module not enabled.', ['app' => 'core']);
- return -1;
- }
- if (!$this->valid()) {
- $this->logger->debug('OC_Image->fixOrientation() No image loaded.', ['app' => 'core']);
- return -1;
- }
- if (is_null($this->filePath) || !is_readable($this->filePath)) {
- $this->logger->debug('OC_Image->fixOrientation() No readable file path set.', ['app' => 'core']);
- return -1;
- }
- $exif = @exif_read_data($this->filePath, 'IFD0');
- if (!$exif) {
- return -1;
- }
- if (!isset($exif['Orientation'])) {
- return -1;
- }
- $this->exif = $exif;
- return $exif['Orientation'];
- }
-
- public function readExif($data) {
- if (!is_callable('exif_read_data')) {
- $this->logger->debug('OC_Image->fixOrientation() Exif module not enabled.', ['app' => 'core']);
- return;
- }
- if (!$this->valid()) {
- $this->logger->debug('OC_Image->fixOrientation() No image loaded.', ['app' => 'core']);
- return;
- }
-
- $exif = @exif_read_data('data://image/jpeg;base64,' . base64_encode($data));
- if (!$exif) {
- return;
- }
- if (!isset($exif['Orientation'])) {
- return;
- }
- $this->exif = $exif;
- }
-
- /**
- * (I'm open for suggestions on better method name ;)
- * Fixes orientation based on EXIF data.
- *
- * @return bool
- */
- public function fixOrientation() {
- if (!$this->valid()) {
- $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']);
- return false;
- }
- $o = $this->getOrientation();
- $this->logger->debug('OC_Image->fixOrientation() Orientation: ' . $o, ['app' => 'core']);
- $rotate = 0;
- $flip = false;
- switch ($o) {
- case -1:
- return false; //Nothing to fix
- case 1:
- $rotate = 0;
- break;
- case 2:
- $rotate = 0;
- $flip = true;
- break;
- case 3:
- $rotate = 180;
- break;
- case 4:
- $rotate = 180;
- $flip = true;
- break;
- case 5:
- $rotate = 90;
- $flip = true;
- break;
- case 6:
- $rotate = 270;
- break;
- case 7:
- $rotate = 270;
- $flip = true;
- break;
- case 8:
- $rotate = 90;
- break;
- }
- if ($flip && function_exists('imageflip')) {
- imageflip($this->resource, IMG_FLIP_HORIZONTAL);
- }
- if ($rotate) {
- $res = imagerotate($this->resource, $rotate, 0);
- if ($res) {
- if (imagealphablending($res, true)) {
- if (imagesavealpha($res, true)) {
- imagedestroy($this->resource);
- $this->resource = $res;
- return true;
- } else {
- $this->logger->debug('OC_Image->fixOrientation() Error during alpha-saving', ['app' => 'core']);
- return false;
- }
- } else {
- $this->logger->debug('OC_Image->fixOrientation() Error during alpha-blending', ['app' => 'core']);
- return false;
- }
- } else {
- $this->logger->debug('OC_Image->fixOrientation() Error during orientation fixing', ['app' => 'core']);
- return false;
- }
- }
- return false;
- }
-
- /**
- * Loads an image from an open file handle.
- * It is the responsibility of the caller to position the pointer at the correct place and to close the handle again.
- *
- * @param resource $handle
- * @return resource|\GdImage|false An image resource or false on error
- */
- public function loadFromFileHandle($handle) {
- $contents = stream_get_contents($handle);
- if ($this->loadFromData($contents)) {
- return $this->resource;
- }
- return false;
- }
-
- /**
- * Check if allocating an image with the given size is allowed.
- *
- * @param int $width The image width.
- * @param int $height The image height.
- * @return bool true if allocating is allowed, false otherwise
- */
- private function checkImageMemory($width, $height) {
- $memory_limit = $this->config->getSystemValueInt('preview_max_memory', self::DEFAULT_MEMORY_LIMIT);
- if ($memory_limit < 0) {
- // Not limited.
- return true;
- }
-
- // Assume 32 bits per pixel.
- if ($width * $height * 4 > $memory_limit * 1024 * 1024) {
- $this->logger->debug('Image size of ' . $width . 'x' . $height . ' would exceed allowed memory limit of ' . $memory_limit);
- return false;
- }
-
- return true;
- }
-
- /**
- * Check if loading an image file from the given path is allowed.
- *
- * @param string $path The path to a local file.
- * @return bool true if allocating is allowed, false otherwise
- */
- private function checkImageSize($path) {
- $size = getimagesize($path);
- if (!$size) {
- return true;
- }
-
- $width = $size[0];
- $height = $size[1];
- if (!$this->checkImageMemory($width, $height)) {
- return false;
- }
-
- return true;
- }
-
- /**
- * Check if loading an image from the given data is allowed.
- *
- * @param string $data A string of image data as read from a file.
- * @return bool true if allocating is allowed, false otherwise
- */
- private function checkImageDataSize($data) {
- $size = getimagesizefromstring($data);
- if (!$size) {
- return true;
- }
-
- $width = $size[0];
- $height = $size[1];
- if (!$this->checkImageMemory($width, $height)) {
- return false;
- }
-
- return true;
- }
-
- /**
- * Loads an image from a local file.
- *
- * @param bool|string $imagePath The path to a local file.
- * @return bool|resource|\GdImage An image resource or false on error
- */
- public function loadFromFile($imagePath = false) {
- // exif_imagetype throws "read error!" if file is less than 12 byte
- if (is_bool($imagePath) || !@is_file($imagePath) || !file_exists($imagePath) || filesize($imagePath) < 12 || !is_readable($imagePath)) {
- return false;
- }
- $iType = exif_imagetype($imagePath);
- switch ($iType) {
- case IMAGETYPE_GIF:
- if (imagetypes() & IMG_GIF) {
- if (!$this->checkImageSize($imagePath)) {
- return false;
- }
- $this->resource = imagecreatefromgif($imagePath);
- if ($this->resource) {
- // Preserve transparency
- imagealphablending($this->resource, true);
- imagesavealpha($this->resource, true);
- } else {
- $this->logger->debug('OC_Image->loadFromFile, GIF image not valid: ' . $imagePath, ['app' => 'core']);
- }
- } else {
- $this->logger->debug('OC_Image->loadFromFile, GIF images not supported: ' . $imagePath, ['app' => 'core']);
- }
- break;
- case IMAGETYPE_JPEG:
- if (imagetypes() & IMG_JPG) {
- if (!$this->checkImageSize($imagePath)) {
- return false;
- }
- if (getimagesize($imagePath) !== false) {
- $this->resource = @imagecreatefromjpeg($imagePath);
- } else {
- $this->logger->debug('OC_Image->loadFromFile, JPG image not valid: ' . $imagePath, ['app' => 'core']);
- }
- } else {
- $this->logger->debug('OC_Image->loadFromFile, JPG images not supported: ' . $imagePath, ['app' => 'core']);
- }
- break;
- case IMAGETYPE_PNG:
- if (imagetypes() & IMG_PNG) {
- if (!$this->checkImageSize($imagePath)) {
- return false;
- }
- $this->resource = @imagecreatefrompng($imagePath);
- if ($this->resource) {
- // Preserve transparency
- imagealphablending($this->resource, true);
- imagesavealpha($this->resource, true);
- } else {
- $this->logger->debug('OC_Image->loadFromFile, PNG image not valid: ' . $imagePath, ['app' => 'core']);
- }
- } else {
- $this->logger->debug('OC_Image->loadFromFile, PNG images not supported: ' . $imagePath, ['app' => 'core']);
- }
- break;
- case IMAGETYPE_XBM:
- if (imagetypes() & IMG_XPM) {
- if (!$this->checkImageSize($imagePath)) {
- return false;
- }
- $this->resource = @imagecreatefromxbm($imagePath);
- } else {
- $this->logger->debug('OC_Image->loadFromFile, XBM/XPM images not supported: ' . $imagePath, ['app' => 'core']);
- }
- break;
- case IMAGETYPE_WBMP:
- if (imagetypes() & IMG_WBMP) {
- if (!$this->checkImageSize($imagePath)) {
- return false;
- }
- $this->resource = @imagecreatefromwbmp($imagePath);
- } else {
- $this->logger->debug('OC_Image->loadFromFile, WBMP images not supported: ' . $imagePath, ['app' => 'core']);
- }
- break;
- case IMAGETYPE_BMP:
- $this->resource = $this->imagecreatefrombmp($imagePath);
- break;
- case IMAGETYPE_WEBP:
- if (imagetypes() & IMG_WEBP) {
- if (!$this->checkImageSize($imagePath)) {
- return false;
- }
- $this->resource = @imagecreatefromwebp($imagePath);
- } else {
- $this->logger->debug('OC_Image->loadFromFile, webp images not supported: ' . $imagePath, ['app' => 'core']);
- }
- break;
- /*
- case IMAGETYPE_TIFF_II: // (intel byte order)
- break;
- case IMAGETYPE_TIFF_MM: // (motorola byte order)
- break;
- case IMAGETYPE_JPC:
- break;
- case IMAGETYPE_JP2:
- break;
- case IMAGETYPE_JPX:
- break;
- case IMAGETYPE_JB2:
- break;
- case IMAGETYPE_SWC:
- break;
- case IMAGETYPE_IFF:
- break;
- case IMAGETYPE_ICO:
- break;
- case IMAGETYPE_SWF:
- break;
- case IMAGETYPE_PSD:
- break;
- */
- default:
-
- // this is mostly file created from encrypted file
- $data = file_get_contents($imagePath);
- if (!$this->checkImageDataSize($data)) {
- return false;
- }
- $this->resource = imagecreatefromstring($data);
- $iType = IMAGETYPE_PNG;
- $this->logger->debug('OC_Image->loadFromFile, Default', ['app' => 'core']);
- break;
- }
- if ($this->valid()) {
- $this->imageType = $iType;
- $this->mimeType = image_type_to_mime_type($iType);
- $this->filePath = $imagePath;
- }
- return $this->resource;
- }
-
- /**
- * Loads an image from a string of data.
- *
- * @param string $str A string of image data as read from a file.
- * @return bool|resource|\GdImage An image resource or false on error
- */
- public function loadFromData($str) {
- if (!is_string($str)) {
- return false;
- }
- if (!$this->checkImageDataSize($str)) {
- return false;
- }
- $this->resource = @imagecreatefromstring($str);
- if ($this->fileInfo) {
- $this->mimeType = $this->fileInfo->buffer($str);
- }
- if ($this->valid()) {
- imagealphablending($this->resource, false);
- imagesavealpha($this->resource, true);
- }
-
- if (!$this->resource) {
- $this->logger->debug('OC_Image->loadFromFile, could not load', ['app' => 'core']);
- return false;
- }
- return $this->resource;
- }
-
- /**
- * Loads an image from a base64 encoded string.
- *
- * @param string $str A string base64 encoded string of image data.
- * @return bool|resource|\GdImage An image resource or false on error
- */
- public function loadFromBase64($str) {
- if (!is_string($str)) {
- return false;
- }
- $data = base64_decode($str);
- if ($data) { // try to load from string data
- if (!$this->checkImageDataSize($data)) {
- return false;
- }
- $this->resource = @imagecreatefromstring($data);
- if ($this->fileInfo) {
- $this->mimeType = $this->fileInfo->buffer($data);
- }
- if (!$this->resource) {
- $this->logger->debug('OC_Image->loadFromBase64, could not load', ['app' => 'core']);
- return false;
- }
- return $this->resource;
- } else {
- return false;
- }
- }
-
- /**
- * Create a new image from file or URL
- *
- * @link http://www.programmierer-forum.de/function-imagecreatefrombmp-laeuft-mit-allen-bitraten-t143137.htm
- * @version 1.00
- * @param string $fileName <p>
- * Path to the BMP image.
- * </p>
- * @return bool|resource|\GdImage an image resource identifier on success, <b>FALSE</b> on errors.
- */
- private function imagecreatefrombmp($fileName) {
- if (!($fh = fopen($fileName, 'rb'))) {
- $this->logger->warning('imagecreatefrombmp: Can not open ' . $fileName, ['app' => 'core']);
- return false;
- }
- // read file header
- $meta = unpack('vtype/Vfilesize/Vreserved/Voffset', fread($fh, 14));
- // check for bitmap
- if ($meta['type'] != 19778) {
- fclose($fh);
- $this->logger->warning('imagecreatefrombmp: Can not open ' . $fileName . ' is not a bitmap!', ['app' => 'core']);
- return false;
- }
- // read image header
- $meta += unpack('Vheadersize/Vwidth/Vheight/vplanes/vbits/Vcompression/Vimagesize/Vxres/Vyres/Vcolors/Vimportant', fread($fh, 40));
- // read additional 16bit header
- if ($meta['bits'] == 16) {
- $meta += unpack('VrMask/VgMask/VbMask', fread($fh, 12));
- }
- // set bytes and padding
- $meta['bytes'] = $meta['bits'] / 8;
- $this->bitDepth = $meta['bits']; //remember the bit depth for the imagebmp call
- $meta['decal'] = 4 - (4 * (($meta['width'] * $meta['bytes'] / 4) - floor($meta['width'] * $meta['bytes'] / 4)));
- if ($meta['decal'] == 4) {
- $meta['decal'] = 0;
- }
- // obtain imagesize
- if ($meta['imagesize'] < 1) {
- $meta['imagesize'] = $meta['filesize'] - $meta['offset'];
- // in rare cases filesize is equal to offset so we need to read physical size
- if ($meta['imagesize'] < 1) {
- $meta['imagesize'] = @filesize($fileName) - $meta['offset'];
- if ($meta['imagesize'] < 1) {
- fclose($fh);
- $this->logger->warning('imagecreatefrombmp: Can not obtain file size of ' . $fileName . ' is not a bitmap!', ['app' => 'core']);
- return false;
- }
- }
- }
- // calculate colors
- $meta['colors'] = !$meta['colors'] ? pow(2, $meta['bits']) : $meta['colors'];
- // read color palette
- $palette = [];
- if ($meta['bits'] < 16) {
- $palette = unpack('l' . $meta['colors'], fread($fh, $meta['colors'] * 4));
- // in rare cases the color value is signed
- if ($palette[1] < 0) {
- foreach ($palette as $i => $color) {
- $palette[$i] = $color + 16777216;
- }
- }
- }
- if (!$this->checkImageMemory($meta['width'], $meta['height'])) {
- fclose($fh);
- return false;
- }
- // create gd image
- $im = imagecreatetruecolor($meta['width'], $meta['height']);
- if ($im == false) {
- fclose($fh);
- $this->logger->warning(
- 'imagecreatefrombmp: imagecreatetruecolor failed for file "' . $fileName . '" with dimensions ' . $meta['width'] . 'x' . $meta['height'],
- ['app' => 'core']);
- return false;
- }
-
- $data = fread($fh, $meta['imagesize']);
- $p = 0;
- $vide = chr(0);
- $y = $meta['height'] - 1;
- $error = 'imagecreatefrombmp: ' . $fileName . ' has not enough data!';
- // loop through the image data beginning with the lower left corner
- while ($y >= 0) {
- $x = 0;
- while ($x < $meta['width']) {
- switch ($meta['bits']) {
- case 32:
- case 24:
- if (!($part = substr($data, $p, 3))) {
- $this->logger->warning($error, ['app' => 'core']);
- return $im;
- }
- $color = @unpack('V', $part . $vide);
- break;
- case 16:
- if (!($part = substr($data, $p, 2))) {
- fclose($fh);
- $this->logger->warning($error, ['app' => 'core']);
- return $im;
- }
- $color = @unpack('v', $part);
- $color[1] = (($color[1] & 0xf800) >> 8) * 65536 + (($color[1] & 0x07e0) >> 3) * 256 + (($color[1] & 0x001f) << 3);
- break;
- case 8:
- $color = @unpack('n', $vide . ($data[$p] ?? ''));
- $color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1];
- break;
- case 4:
- $color = @unpack('n', $vide . ($data[floor($p)] ?? ''));
- $color[1] = ($p * 2) % 2 == 0 ? $color[1] >> 4 : $color[1] & 0x0F;
- $color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1];
- break;
- case 1:
- $color = @unpack('n', $vide . ($data[floor($p)] ?? ''));
- switch (($p * 8) % 8) {
- case 0:
- $color[1] = $color[1] >> 7;
- break;
- case 1:
- $color[1] = ($color[1] & 0x40) >> 6;
- break;
- case 2:
- $color[1] = ($color[1] & 0x20) >> 5;
- break;
- case 3:
- $color[1] = ($color[1] & 0x10) >> 4;
- break;
- case 4:
- $color[1] = ($color[1] & 0x8) >> 3;
- break;
- case 5:
- $color[1] = ($color[1] & 0x4) >> 2;
- break;
- case 6:
- $color[1] = ($color[1] & 0x2) >> 1;
- break;
- case 7:
- $color[1] = ($color[1] & 0x1);
- break;
- }
- $color[1] = isset($palette[$color[1] + 1]) ? $palette[$color[1] + 1] : $palette[1];
- break;
- default:
- fclose($fh);
- $this->logger->warning('imagecreatefrombmp: ' . $fileName . ' has ' . $meta['bits'] . ' bits and this is not supported!', ['app' => 'core']);
- return false;
- }
- imagesetpixel($im, $x, $y, $color[1]);
- $x++;
- $p += $meta['bytes'];
- }
- $y--;
- $p += $meta['decal'];
- }
- fclose($fh);
- return $im;
- }
-
- /**
- * Resizes the image preserving ratio.
- *
- * @param integer $maxSize The maximum size of either the width or height.
- * @return bool
- */
- public function resize($maxSize) {
- if (!$this->valid()) {
- $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']);
- return false;
- }
- $result = $this->resizeNew($maxSize);
- imagedestroy($this->resource);
- $this->resource = $result;
- return $this->valid();
- }
-
- /**
- * @param $maxSize
- * @return resource|bool|\GdImage
- */
- private function resizeNew($maxSize) {
- if (!$this->valid()) {
- $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']);
- return false;
- }
- $widthOrig = imagesx($this->resource);
- $heightOrig = imagesy($this->resource);
- $ratioOrig = $widthOrig / $heightOrig;
-
- if ($ratioOrig > 1) {
- $newHeight = round($maxSize / $ratioOrig);
- $newWidth = $maxSize;
- } else {
- $newWidth = round($maxSize * $ratioOrig);
- $newHeight = $maxSize;
- }
-
- return $this->preciseResizeNew((int)round($newWidth), (int)round($newHeight));
- }
-
- /**
- * @param int $width
- * @param int $height
- * @return bool
- */
- public function preciseResize(int $width, int $height): bool {
- if (!$this->valid()) {
- $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']);
- return false;
- }
- $result = $this->preciseResizeNew($width, $height);
- imagedestroy($this->resource);
- $this->resource = $result;
- return $this->valid();
- }
-
-
- /**
- * @param int $width
- * @param int $height
- * @return resource|bool|\GdImage
- */
- public function preciseResizeNew(int $width, int $height) {
- if (!($width > 0) || !($height > 0)) {
- $this->logger->info(__METHOD__ . '(): Requested image size not bigger than 0', ['app' => 'core']);
- return false;
- }
- if (!$this->valid()) {
- $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']);
- return false;
- }
- $widthOrig = imagesx($this->resource);
- $heightOrig = imagesy($this->resource);
- $process = imagecreatetruecolor($width, $height);
- if ($process === false) {
- $this->logger->error(__METHOD__ . '(): Error creating true color image', ['app' => 'core']);
- return false;
- }
-
- // preserve transparency
- if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) {
- imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127));
- imagealphablending($process, false);
- imagesavealpha($process, true);
- }
-
- $res = imagecopyresampled($process, $this->resource, 0, 0, 0, 0, $width, $height, $widthOrig, $heightOrig);
- if ($res === false) {
- $this->logger->error(__METHOD__ . '(): Error re-sampling process image', ['app' => 'core']);
- imagedestroy($process);
- return false;
- }
- return $process;
- }
-
- /**
- * Crops the image to the middle square. If the image is already square it just returns.
- *
- * @param int $size maximum size for the result (optional)
- * @return bool for success or failure
- */
- public function centerCrop($size = 0) {
- if (!$this->valid()) {
- $this->logger->error('OC_Image->centerCrop, No image loaded', ['app' => 'core']);
- return false;
- }
- $widthOrig = imagesx($this->resource);
- $heightOrig = imagesy($this->resource);
- if ($widthOrig === $heightOrig and $size == 0) {
- return true;
- }
- $ratioOrig = $widthOrig / $heightOrig;
- $width = $height = min($widthOrig, $heightOrig);
-
- if ($ratioOrig > 1) {
- $x = ($widthOrig / 2) - ($width / 2);
- $y = 0;
- } else {
- $y = ($heightOrig / 2) - ($height / 2);
- $x = 0;
- }
- if ($size > 0) {
- $targetWidth = $size;
- $targetHeight = $size;
- } else {
- $targetWidth = $width;
- $targetHeight = $height;
- }
- $process = imagecreatetruecolor($targetWidth, $targetHeight);
- if ($process === false) {
- $this->logger->error('OC_Image->centerCrop, Error creating true color image', ['app' => 'core']);
- return false;
- }
-
- // preserve transparency
- if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) {
- imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127));
- imagealphablending($process, false);
- imagesavealpha($process, true);
- }
-
- imagecopyresampled($process, $this->resource, 0, 0, $x, $y, $targetWidth, $targetHeight, $width, $height);
- if ($process === false) {
- $this->logger->error('OC_Image->centerCrop, Error re-sampling process image ' . $width . 'x' . $height, ['app' => 'core']);
- return false;
- }
- imagedestroy($this->resource);
- $this->resource = $process;
- return true;
- }
-
- /**
- * Crops the image from point $x$y with dimension $wx$h.
- *
- * @param int $x Horizontal position
- * @param int $y Vertical position
- * @param int $w Width
- * @param int $h Height
- * @return bool for success or failure
- */
- public function crop(int $x, int $y, int $w, int $h): bool {
- if (!$this->valid()) {
- $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']);
- return false;
- }
- $result = $this->cropNew($x, $y, $w, $h);
- imagedestroy($this->resource);
- $this->resource = $result;
- return $this->valid();
- }
-
- /**
- * Crops the image from point $x$y with dimension $wx$h.
- *
- * @param int $x Horizontal position
- * @param int $y Vertical position
- * @param int $w Width
- * @param int $h Height
- * @return resource|\GdImage|false
- */
- public function cropNew(int $x, int $y, int $w, int $h) {
- if (!$this->valid()) {
- $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']);
- return false;
- }
- $process = imagecreatetruecolor($w, $h);
- if ($process === false) {
- $this->logger->error(__METHOD__ . '(): Error creating true color image', ['app' => 'core']);
- return false;
- }
-
- // preserve transparency
- if ($this->imageType == IMAGETYPE_GIF or $this->imageType == IMAGETYPE_PNG) {
- imagecolortransparent($process, imagecolorallocatealpha($process, 0, 0, 0, 127));
- imagealphablending($process, false);
- imagesavealpha($process, true);
- }
-
- imagecopyresampled($process, $this->resource, 0, 0, $x, $y, $w, $h, $w, $h);
- if ($process === false) {
- $this->logger->error(__METHOD__ . '(): Error re-sampling process image ' . $w . 'x' . $h, ['app' => 'core']);
- return false;
- }
- return $process;
- }
-
- /**
- * Resizes the image to fit within a boundary while preserving ratio.
- *
- * Warning: Images smaller than $maxWidth x $maxHeight will end up being scaled up
- *
- * @param integer $maxWidth
- * @param integer $maxHeight
- * @return bool
- */
- public function fitIn($maxWidth, $maxHeight) {
- if (!$this->valid()) {
- $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']);
- return false;
- }
- $widthOrig = imagesx($this->resource);
- $heightOrig = imagesy($this->resource);
- $ratio = $widthOrig / $heightOrig;
-
- $newWidth = min($maxWidth, $ratio * $maxHeight);
- $newHeight = min($maxHeight, $maxWidth / $ratio);
-
- $this->preciseResize((int)round($newWidth), (int)round($newHeight));
- return true;
- }
-
- /**
- * Shrinks larger images to fit within specified boundaries while preserving ratio.
- *
- * @param integer $maxWidth
- * @param integer $maxHeight
- * @return bool
- */
- public function scaleDownToFit($maxWidth, $maxHeight) {
- if (!$this->valid()) {
- $this->logger->error(__METHOD__ . '(): No image loaded', ['app' => 'core']);
- return false;
- }
- $widthOrig = imagesx($this->resource);
- $heightOrig = imagesy($this->resource);
-
- if ($widthOrig > $maxWidth || $heightOrig > $maxHeight) {
- return $this->fitIn($maxWidth, $maxHeight);
- }
-
- return false;
- }
-
- public function copy(): IImage {
- $image = new OC_Image(null, $this->logger, $this->config);
- $image->resource = imagecreatetruecolor($this->width(), $this->height());
- imagecopy(
- $image->resource(),
- $this->resource(),
- 0,
- 0,
- 0,
- 0,
- $this->width(),
- $this->height()
- );
-
- return $image;
- }
-
- public function cropCopy(int $x, int $y, int $w, int $h): IImage {
- $image = new OC_Image(null, $this->logger, $this->config);
- $image->imageType = $this->imageType;
- $image->mimeType = $this->mimeType;
- $image->bitDepth = $this->bitDepth;
- $image->resource = $this->cropNew($x, $y, $w, $h);
-
- return $image;
- }
-
- public function preciseResizeCopy(int $width, int $height): IImage {
- $image = new OC_Image(null, $this->logger, $this->config);
- $image->imageType = $this->imageType;
- $image->mimeType = $this->mimeType;
- $image->bitDepth = $this->bitDepth;
- $image->resource = $this->preciseResizeNew($width, $height);
-
- return $image;
- }
-
- public function resizeCopy(int $maxSize): IImage {
- $image = new OC_Image(null, $this->logger, $this->config);
- $image->imageType = $this->imageType;
- $image->mimeType = $this->mimeType;
- $image->bitDepth = $this->bitDepth;
- $image->resource = $this->resizeNew($maxSize);
-
- return $image;
- }
-
- /**
- * Destroys the current image and resets the object
- */
- public function destroy() {
- if ($this->valid()) {
- imagedestroy($this->resource);
- }
- $this->resource = false;
- }
-
- public function __destruct() {
- $this->destroy();
- }
-}
-
-if (!function_exists('imagebmp')) {
- /**
- * Output a BMP image to either the browser or a file
- *
- * @link http://www.ugia.cn/wp-data/imagebmp.php
- * @author legend <legendsky@hotmail.com>
- * @link http://www.programmierer-forum.de/imagebmp-gute-funktion-gefunden-t143716.htm
- * @author mgutt <marc@gutt.it>
- * @version 1.00
- * @param resource|\GdImage $im
- * @param string $fileName [optional] <p>The path to save the file to.</p>
- * @param int $bit [optional] <p>Bit depth, (default is 24).</p>
- * @param int $compression [optional]
- * @return bool <b>TRUE</b> on success or <b>FALSE</b> on failure.
- */
- function imagebmp($im, $fileName = '', $bit = 24, $compression = 0) {
- if (!in_array($bit, [1, 4, 8, 16, 24, 32])) {
- $bit = 24;
- } elseif ($bit == 32) {
- $bit = 24;
- }
- $bits = (int)pow(2, $bit);
- imagetruecolortopalette($im, true, $bits);
- $width = imagesx($im);
- $height = imagesy($im);
- $colorsNum = imagecolorstotal($im);
- $rgbQuad = '';
- if ($bit <= 8) {
- for ($i = 0; $i < $colorsNum; $i++) {
- $colors = imagecolorsforindex($im, $i);
- $rgbQuad .= chr($colors['blue']) . chr($colors['green']) . chr($colors['red']) . "\0";
- }
- $bmpData = '';
- if ($compression == 0 || $bit < 8) {
- $compression = 0;
- $extra = '';
- $padding = 4 - ceil($width / (8 / $bit)) % 4;
- if ($padding % 4 != 0) {
- $extra = str_repeat("\0", $padding);
- }
- for ($j = $height - 1; $j >= 0; $j--) {
- $i = 0;
- while ($i < $width) {
- $bin = 0;
- $limit = $width - $i < 8 / $bit ? (8 / $bit - $width + $i) * $bit : 0;
- for ($k = 8 - $bit; $k >= $limit; $k -= $bit) {
- $index = imagecolorat($im, $i, $j);
- $bin |= $index << $k;
- $i++;
- }
- $bmpData .= chr($bin);
- }
- $bmpData .= $extra;
- }
- } // RLE8
- elseif ($compression == 1 && $bit == 8) {
- for ($j = $height - 1; $j >= 0; $j--) {
- $lastIndex = null;
- $sameNum = 0;
- for ($i = 0; $i <= $width; $i++) {
- $index = imagecolorat($im, $i, $j);
- if ($index !== $lastIndex || $sameNum > 255) {
- if ($sameNum != 0) {
- $bmpData .= chr($sameNum) . chr($lastIndex);
- }
- $lastIndex = $index;
- $sameNum = 1;
- } else {
- $sameNum++;
- }
- }
- $bmpData .= "\0\0";
- }
- $bmpData .= "\0\1";
- }
- $sizeQuad = strlen($rgbQuad);
- $sizeData = strlen($bmpData);
- } else {
- $extra = '';
- $padding = 4 - ($width * ($bit / 8)) % 4;
- if ($padding % 4 != 0) {
- $extra = str_repeat("\0", $padding);
- }
- $bmpData = '';
- for ($j = $height - 1; $j >= 0; $j--) {
- for ($i = 0; $i < $width; $i++) {
- $index = imagecolorat($im, $i, $j);
- $colors = imagecolorsforindex($im, $index);
- if ($bit == 16) {
- $bin = 0 << $bit;
- $bin |= ($colors['red'] >> 3) << 10;
- $bin |= ($colors['green'] >> 3) << 5;
- $bin |= $colors['blue'] >> 3;
- $bmpData .= pack("v", $bin);
- } else {
- $bmpData .= pack("c*", $colors['blue'], $colors['green'], $colors['red']);
- }
- }
- $bmpData .= $extra;
- }
- $sizeQuad = 0;
- $sizeData = strlen($bmpData);
- $colorsNum = 0;
- }
- $fileHeader = 'BM' . pack('V3', 54 + $sizeQuad + $sizeData, 0, 54 + $sizeQuad);
- $infoHeader = pack('V3v2V*', 0x28, $width, $height, 1, $bit, $compression, $sizeData, 0, 0, $colorsNum, 0);
- if ($fileName != '') {
- $fp = fopen($fileName, 'wb');
- fwrite($fp, $fileHeader . $infoHeader . $rgbQuad . $bmpData);
- fclose($fp);
- return true;
- }
- echo $fileHeader . $infoHeader . $rgbQuad . $bmpData;
- return true;
- }
-}
-
-if (!function_exists('exif_imagetype')) {
- /**
- * Workaround if exif_imagetype does not exist
- *
- * @link https://www.php.net/manual/en/function.exif-imagetype.php#80383
- * @param string $fileName
- * @return string|boolean
- */
- function exif_imagetype($fileName) {
- if (($info = getimagesize($fileName)) !== false) {
- return $info[2];
- }
- return false;
- }
-}
generated by cgit v1.2.3 (git 2.39.1) at 2025-08-14 18:18:49 +0000