<?php
+/**
+ * @copyright Copyright (C) 2010-2022, the Friendica project
+ *
+ * @license GNU AGPL version 3 or any later version
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * 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
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
namespace Friendica\Util;
-use Friendica\Core\Cache;
use Friendica\Core\Logger;
-use Friendica\Core\System;
use Friendica\DI;
-use Imagick;
+use Friendica\Model\Photo;
+use Friendica\Network\HTTPClient\Client\HttpClientAccept;
/**
* Image utilities
/**
* Maps Mime types to Imagick formats
*
- * @return array
+ * @return array Format map
*/
public static function getFormatsMap()
{
- $m = [
+ return [
'image/jpeg' => 'JPG',
+ 'image/jpg' => 'JPG',
'image/png' => 'PNG',
- 'image/gif' => 'GIF'
+ 'image/gif' => 'GIF',
];
+ }
- return $m;
+ /**
+ * Return file extension for MIME type
+ *
+ * @param string $mimetype MIME type
+ * @return string File extension for MIME type
+ */
+ public static function getExtensionByMimeType(string $mimetype): string
+ {
+ switch ($mimetype) {
+ case 'image/png':
+ $imagetype = IMAGETYPE_PNG;
+ break;
+
+ case 'image/gif':
+ $imagetype = IMAGETYPE_GIF;
+ break;
+
+ case 'image/jpeg':
+ case 'image/jpg':
+ $imagetype = IMAGETYPE_JPEG;
+ break;
+
+ default: // Unknown type must be a blob then
+ return 'blob';
+ break;
+ }
+
+ return image_type_to_extension($imagetype);
}
/**
*
* @return array
*/
- public static function supportedTypes()
+ public static function supportedTypes(): array
{
$types = [
- 'image/jpeg' => 'jpg'
+ 'image/jpeg' => 'jpg',
+ 'image/jpg' => 'jpg',
];
+
if (class_exists('Imagick')) {
// Imagick::queryFormats won't help us a lot there...
// At least, not yet, other parts of friendica uses this array
}
/**
- * Guess image mimetype from filename or from Content-Type header
+ * Fetch image mimetype from the image data or guessing from the file name
*
- * @param string $filename Image filename
- * @param boolean $fromcurl Check Content-Type header from curl request
- * @param string $header passed headers to take into account
+ * @param string $image_data Image data
+ * @param string $filename File name (for guessing the type via the extension)
+ * @param string $default Default MIME type
+ * @return string MIME type
+ * @throws \Exception
+ */
+ public static function getMimeTypeByData(string $image_data, string $filename = '', string $default = ''): string
+ {
+ if (substr($default, 0, 6) == 'image/') {
+ Logger::info('Using default mime type', ['filename' => $filename, 'mime' => $default]);
+ return $default;
+ }
+
+ $image = @getimagesizefromstring($image_data);
+ if (!empty($image['mime'])) {
+ Logger::info('Mime type detected via data', ['filename' => $filename, 'default' => $default, 'mime' => $image['mime']]);
+ return $image['mime'];
+ }
+
+ return self::guessTypeByExtension($filename);
+ }
+
+ /**
+ * Fetch image mimetype from the image data or guessing from the file name
*
- * @return string|null
+ * @param string $sourcefile Source file of the image
+ * @param string $filename File name (for guessing the type via the extension)
+ * @param string $default default MIME type
+ * @return string MIME type
* @throws \Exception
*/
- public static function guessType($filename, $fromcurl = false, $header = '')
+ public static function getMimeTypeBySource(string $sourcefile, string $filename = '', string $default = ''): string
{
- Logger::info('Image: guessType: ' . $filename . ($fromcurl ? ' from curl headers' : ''));
- $type = null;
- if ($fromcurl) {
- $headers = [];
- $h = explode("\n", $header);
- foreach ($h as $l) {
- $data = array_map("trim", explode(":", trim($l), 2));
- if (count($data) > 1) {
- list($k, $v) = $data;
- $headers[$k] = $v;
- }
- }
+ if (substr($default, 0, 6) == 'image/') {
+ Logger::info('Using default mime type', ['filename' => $filename, 'mime' => $default]);
+ return $default;
+ }
- if (array_key_exists('Content-Type', $headers)) {
- $type = $headers['Content-Type'];
- }
+ $image = @getimagesize($sourcefile);
+ if (!empty($image['mime'])) {
+ Logger::info('Mime type detected via file', ['filename' => $filename, 'default' => $default, 'image' => $image]);
+ return $image['mime'];
}
- if (is_null($type)) {
- // Guessing from extension? Isn't that... dangerous?
- if (class_exists('Imagick') && file_exists($filename) && is_readable($filename)) {
- /**
- * Well, this not much better,
- * but at least it comes from the data inside the image,
- * we won't be tricked by a manipulated extension
- */
- $image = new Imagick($filename);
- $type = $image->getImageMimeType();
- } else {
- $ext = pathinfo($filename, PATHINFO_EXTENSION);
- $types = self::supportedTypes();
- $type = 'image/jpeg';
- foreach ($types as $m => $e) {
- if ($ext == $e) {
- $type = $m;
- }
- }
+ return self::guessTypeByExtension($filename);
+ }
+
+ /**
+ * Guess image MIME type from the filename's extension
+ *
+ * @param string $filename Image filename
+ * @return string Guessed MIME type by extension
+ * @throws \Exception
+ */
+ public static function guessTypeByExtension(string $filename): string
+ {
+ $ext = pathinfo(parse_url($filename, PHP_URL_PATH), PATHINFO_EXTENSION);
+ $types = self::supportedTypes();
+ $type = 'image/jpeg';
+ foreach ($types as $m => $e) {
+ if ($ext == $e) {
+ $type = $m;
}
}
- Logger::info('Image: guessType: type=' . $type);
+ Logger::info('Mime type guessed via extension', ['filename' => $filename, 'type' => $type]);
return $type;
}
-
/**
+ * Gets info array from given URL, cached data has priority
+ *
* @param string $url
- * @return array
+ * @return array Info
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
- public static function getInfoFromURLCached($url)
+ public static function getInfoFromURLCached(string $url): array
{
$data = [];
return $data;
}
- $data = Cache::get($url);
+ $cacheKey = 'getInfoFromURL:' . sha1($url);
+
+ $data = DI::cache()->get($cacheKey);
if (empty($data) || !is_array($data)) {
$data = self::getInfoFromURL($url);
- DI::cache()->set($url, $data);
+ DI::cache()->set($cacheKey, $data);
}
- return $data;
+ return $data ?? [];
}
/**
+ * Gets info from URL uncached
+ *
* @param string $url
- * @return array
+ * @return array Info array
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
- public static function getInfoFromURL($url)
+ public static function getInfoFromURL(string $url): array
{
$data = [];
return $data;
}
- $img_str = Network::fetchUrl($url, true, 4);
+ if (Network::isLocalLink($url) && ($data = Photo::getResourceData($url))) {
+ $photo = Photo::selectFirst([], ['resource-id' => $data['guid'], 'scale' => $data['scale']]);
+ if (!empty($photo)) {
+ $img_str = Photo::getImageDataForPhoto($photo);
+ }
+ // @todo Possibly add a check for locally stored files
+ }
+
+ if (empty($img_str)) {
+ $img_str = DI::httpClient()->fetch($url, HttpClientAccept::IMAGE, 4);
+ }
if (!$img_str) {
return [];
$filesize = strlen($img_str);
try {
- if (function_exists("getimagesizefromstring")) {
- $data = @getimagesizefromstring($img_str);
- } else {
- $tempfile = tempnam(get_temppath(), "cache");
-
- $stamp1 = microtime(true);
- file_put_contents($tempfile, $img_str);
- DI::profiler()->saveTimestamp($stamp1, "file", System::callstack());
-
- $data = getimagesize($tempfile);
- unlink($tempfile);
- }
+ $data = @getimagesizefromstring($img_str);
} catch (\Exception $e) {
return [];
}
$data['size'] = $filesize;
}
- return $data;
+ return is_array($data) ? $data : [];
}
/**
- * @param integer $width
- * @param integer $height
- * @param integer $max
- * @return array
+ * Returns scaling information
+ *
+ * @param integer $width Width
+ * @param integer $height Height
+ * @param integer $max Max width/height
+ * @return array Scaling dimensions
*/
- public static function getScalingDimensions($width, $height, $max)
+ public static function getScalingDimensions(int $width, int $height, int $max): array
{
if ((!$width) || (!$height)) {
return ['width' => 0, 'height' => 0];