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447 lines
13 KiB
PHP
447 lines
13 KiB
PHP
<?php
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use Code\Lib\Channel;
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use Code\Photo\PhotoDriver;
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use Code\Photo\PhotoGd;
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use Code\Photo\PhotoImagick;
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use Code\Lib\Config;
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use Code\Lib\Hashpath;
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use Code\Lib\Url;
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/**
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* @brief Return a PhotoDriver object.
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*
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* Use this factory when manipulating images.
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*
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* Return a photo driver object implementing ImageMagick or GD.
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*
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* @param string $data Image data
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* @param string $type Mimetype
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* @return null|PhotoDriver
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* NULL if unsupported image type or failure, otherwise photo driver object
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*/
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function photo_factory($data, $type = null)
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{
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$ph = null;
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$unsupported_types = [
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'image/bmp',
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'image/vnd.microsoft.icon',
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'image/tiff',
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'image/svg+xml',
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];
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if ($type && in_array(strtolower($type), $unsupported_types)) {
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logger('Unsupported image type ' . $type);
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return null;
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}
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$ignore_imagick = get_config('system', 'ignore_imagick');
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if (class_exists('Imagick') && !$ignore_imagick) {
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$ph = new PhotoImagick($data, $type);
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}
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if (! $ph) {
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$ph = new PhotoGd($data, $type);
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}
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return $ph;
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}
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/**
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* @brief Guess image mimetype from filename or from Content-Type header.
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*
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* @param string $filename
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* Image filename
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* @param string $headers (optional)
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* Headers to check for Content-Type (from curl request)
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* @return null|string Guessed mimetype
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* @throws ImagickException
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*/
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function guess_image_type($filename, $headers = '')
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{
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// logger('Photo: guess_image_type: '.$filename . ($headers?' from curl headers':''), LOGGER_DEBUG);
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$type = null;
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if ($headers) {
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$hdrs = [];
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$h = explode("\n", $headers);
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foreach ($h as $l) {
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if (str_contains($l, ':')) {
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list($k, $v) = array_map('trim', explode(':', trim($l), 2));
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$hdrs[strtolower($k)] = $v;
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}
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}
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logger('Curl headers: ' . print_r($hdrs, true), LOGGER_DEBUG);
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if (array_key_exists('content-type', $hdrs)) {
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$ph = photo_factory('');
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$types = $ph->supportedTypes();
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if (array_key_exists($hdrs['content-type'], $types)) {
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$type = $hdrs['content-type'];
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}
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}
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}
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if (is_null($type)) {
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$ignore_imagick = get_config('system', 'ignore_imagick');
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if (class_exists('Imagick') && file_exists($filename) && is_readable($filename) && !$ignore_imagick) {
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/**
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* Well, this not much better,
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* but at least it comes from the data inside the image,
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* we won't be tricked by a manipulated extension
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*/
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$image = new Imagick($filename);
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$type = $image->getImageMimeType();
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}
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if (is_null($type)) {
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$ext = pathinfo($filename, PATHINFO_EXTENSION);
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$ph = photo_factory('');
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$types = $ph->supportedTypes();
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foreach ($types as $m => $e) {
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if ($ext === $e) {
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$type = $m;
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}
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}
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}
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if (is_null($type) && (!str_contains($filename, 'http'))) {
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$size = getimagesize($filename);
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$ph = photo_factory('');
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$types = $ph->supportedTypes();
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$type = ((array_key_exists($size['mime'], $types)) ? $size['mime'] : 'image/jpeg');
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}
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if (is_null($type)) {
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if (str_contains(strtolower($filename), 'jpg')) {
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$type = 'image/jpeg';
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} elseif (str_contains(strtolower($filename), 'jpeg')) {
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$type = 'image/jpeg';
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} elseif (str_contains(strtolower($filename), 'gif')) {
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$type = 'image/gif';
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} elseif (str_contains(strtolower($filename), 'png')) {
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$type = 'image/png';
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}
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}
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}
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logger('Photo: guess_image_type: filename = ' . $filename . ' type = ' . $type, LOGGER_DEBUG);
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return $type;
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}
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/**
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* @brief Delete thing photo from database.
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*
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* @param string $url
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* @param string $ob_hash
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* @return void
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*/
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function delete_thing_photo($url, $ob_hash)
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{
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$hash = basename($url);
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$dbhash = substr($hash, 0, strpos($hash, '-'));
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// hashes should be 32 bytes.
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if ((! $ob_hash) || (strlen($dbhash) < 16)) {
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return;
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}
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if (str_contains($url, '/xp/') && str_contains($url, '.obj')) {
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$xppath = 'cache/xp/' . substr($hash, 0, 2) . '/' . substr($hash, 2, 2) . '/' . $hash;
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if (file_exists($xppath)) {
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unlink($xppath);
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}
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$xppath = str_replace('-4', '-5', $xppath);
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if (file_exists($xppath)) {
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unlink($xppath);
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}
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$xppath = str_replace('-5', '-6', $xppath);
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if (file_exists($xppath)) {
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unlink($xppath);
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}
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} else {
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q(
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"delete from photo where xchan = '%s' and photo_usage = %d and resource_id = '%s'",
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dbesc($ob_hash),
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intval(PHOTO_THING),
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dbesc($dbhash)
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);
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}
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}
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/**
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* @brief Fetches a photo from external site and prepares its miniatures.
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*
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* @param string $src
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* external URL to fetch base image
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* @param string $xchan
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* channel unique hash
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* @param bool $thing
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* TRUE if this is a thing URL
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*
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* @return array|false
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* * \e string \b 0 => local URL to full image
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* * \e string \b 1 => local URL to standard thumbnail
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* * \e string \b 2 => local URL to micro thumbnail
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* * \e string \b 3 => image type
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* * \e boolean \b 4 => TRUE if fetch failure
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*/
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function import_remote_xchan_photo($src, $xchan, $thing = false)
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{
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$failure = [];
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$type = EMPTY_STR;
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logger(sprintf('importing %s for %s', $src, $xchan), LOGGER_DEBUG);
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$animated = get_config('system', 'animated_avatars', true);
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$path = Hashpath::path((($thing) ? $src . $xchan : $xchan), 'cache/xp', 2);
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$hash = basename($path);
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// Maybe it's already a cached xchan photo on our site. Do nothing.
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if (str_starts_with($src, z_root() . '/xp/')) {
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return false;
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}
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// Always return these paths. The Xp module will return the default profile photo if unset.
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$photo = z_root() . '/xp/' . $hash . '-4' . (($thing) ? '.obj' : EMPTY_STR);
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$thumb = z_root() . '/xp/' . $hash . '-5' . (($thing) ? '.obj' : EMPTY_STR);
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$micro = z_root() . '/xp/' . $hash . '-6' . (($thing) ? '.obj' : EMPTY_STR);
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if (!$src) {
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$gis = getimagesize(Channel::get_default_profile_photo());
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return [ $photo, $thumb, $micro, (($gis) ? $gis['mime'] : 'image/png'), true ];
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}
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$result = Url::get($src);
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if ($result['success']) {
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@file_put_contents('cache/' . $hash, $result['body']);
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$info = getimagesize('cache/' . $hash);
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@unlink('cache/' . $hash);
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if (is_array($info) && array_key_exists('mime', $info)) {
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$type = $info['mime'];
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}
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if ($type) {
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$img = photo_factory($result['body'], $type);
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if ($img && $img->is_valid()) {
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$width = $img->getWidth();
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$height = $img->getHeight();
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if ($width && $height) {
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if (($width / $height) > 1.2) {
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// crop out the sides
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$margin = $width - $height;
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$img->cropImage(300, ($margin / 2), 0, $height, $height);
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} elseif (($height / $width) > 1.2) {
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// crop out the bottom
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$img->cropImage(300, 0, 0, $width, $width);
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} else {
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$img->scaleImageSquare(300);
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}
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} else {
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$failure[] = 'No dimensions';
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}
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$savepath = $path . '-4' . (($thing) ? '.obj' : EMPTY_STR);
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$r = $img->saveImage($savepath, $animated);
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if ($r === false) {
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$failure[] = 'Storage failure size 4';
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}
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$img->scaleImage(80);
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$savepath = $path . '-5' . (($thing) ? '.obj' : EMPTY_STR);
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$r = $img->saveImage($savepath, $animated);
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if ($r === false) {
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$failure[] = 'Storage failure size 5';
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}
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$img->scaleImage(48);
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$savepath = $path . '-6' . (($thing) ? '.obj' : EMPTY_STR);
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$r = $img->saveImage($savepath, $animated);
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if ($r === false) {
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$failure[] = 'Storage failure size 6';
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}
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}
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else {
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$failure[] = 'Invalid image from ' . $src;
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}
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}
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else {
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$failure[] = 'unknown filetype';
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}
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} else {
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$failure[] = 'Unable to fetch ' . $src;
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$failure[] = $result['error'];
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$failure[] = print_array($result['debug']);
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}
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if ($failure) {
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logger('failed: ' . $photo);
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logger('failure: ' . print_r($failure,true), LOGGER_DEBUG);
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file_put_contents($path . '.log', implode("\n", $failure));
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} elseif (file_exists($path . '.log')) {
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unlink($path . '.log');
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}
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logger('cached photo: ' . $photo, LOGGER_DEBUG);
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return([$photo, $thumb, $micro, $type, (bool)$failure]);
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}
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function import_remote_cover_photo($src, $xchan)
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{
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if (!Config::Get('system','remote_cover_photos')) {
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return false;
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}
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logger(sprintf('importing %s for %s', $src, $xchan), LOGGER_DEBUG);
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$path = Hashpath::path($xchan, 'cache/xp', 2);
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// Maybe it's already a cached xchan photo on our site. Do nothing.
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if (str_starts_with($src, z_root() . '/xp/')) {
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return false;
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}
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$orig = $path . '.orig';
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$fp = fopen($orig, 'wb');
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if (!$fp) {
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logger('failed to create storage file');
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return false;
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}
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$result = Url::get($src, ['filep' => $fp]);
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fclose($fp);
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if ($result['success']) {
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$info = getimagesize($orig);
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if (!$info) {
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unlink($orig);
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logger('storage failure: unrecognisable photo.');
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return false;
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}
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$imagick_path = Config::Get('system','imagick_convert_path');
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if ($imagick_path && file_exists($imagick_path)) {
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exec($imagick_path . ' '
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. escapeshellarg(PROJECT_BASE . '/' . $orig)
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. ' -resize 425x239 '
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. escapeshellarg(PROJECT_BASE . '/' . $path . '-9')
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);
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}
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}
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unlink($orig);
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return file_exists($path . '-9');
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}
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/**
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* @brief Import channel photo from a URL.
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*
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* @param string $photo URL to a photo
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* @param int $aid
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* @param int $uid channel_id
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* @return null|string Guessed image mimetype or null.
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* @throws ImagickException
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*/
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function import_channel_photo_from_url($photo, $aid, $uid)
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{
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$type = null;
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if ($photo) {
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$result = Url::get($photo);
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if ($result['success']) {
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$img_str = $result['body'];
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$type = guess_image_type($photo, $result['header']);
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import_channel_photo($img_str, $type, $aid, $uid);
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}
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}
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return $type;
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}
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/**
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* @brief Import a channel photo and prepare its miniatures.
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*
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* @param string $photo Image data
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* @param string $type
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* @param int $aid
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* @param int $uid channel_id
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* @return bool|string false on failure, otherwise resource_id of photo
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*/
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function import_channel_photo($photo, $type, $aid, $uid)
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{
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logger('Importing channel photo for ' . $uid, LOGGER_DEBUG);
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$r = q(
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"select resource_id from photo where uid = %d and photo_usage = 1 and imgscale = 4",
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intval($uid)
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);
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if ($r) {
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$hash = $r[0]['resource_id'];
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} else {
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$hash = photo_new_resource();
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}
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$photo_failure = false;
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$filename = $hash;
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$img = photo_factory($photo, $type);
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if ($img->is_valid()) {
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// config array for image save method
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$p = [
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'aid' => $aid,
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'uid' => $uid,
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'resource_id' => $hash,
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'filename' => $filename,
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'album' => t('Profile Photos'),
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'photo_usage' => PHOTO_PROFILE,
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'imgscale' => PHOTO_RES_PROFILE_300,
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];
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// photo size
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$img->scaleImageSquare(300);
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$r = $img->save($p);
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if ($r === false) {
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$photo_failure = true;
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}
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// thumb size
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$img->scaleImage(80);
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$p['imgscale'] = 5;
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$r = $img->save($p);
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if ($r === false) {
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$photo_failure = true;
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}
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// micro size
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$img->scaleImage(48);
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$p['imgscale'] = 6;
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$r = $img->save($p);
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if ($r === false) {
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$photo_failure = true;
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}
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} else {
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logger('Invalid image.');
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$photo_failure = true;
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}
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if ($photo_failure) {
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return false;
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}
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return $hash;
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}
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