]> git.mxchange.org Git - friendica.git/blobdiff - src/Model/Photo.php
Insert a `user-contact` for every contact
[friendica.git] / src / Model / Photo.php
index e70ac2d97bda1c9a1493d2c1ac2b70719ea38523..c09434d7f237a477c80fbb0dc25e63e4643aac8a 100644 (file)
@@ -1,25 +1,42 @@
 <?php
-
 /**
- * @file src/Model/Photo.php
- * @brief This file contains the Photo class for database interface
+ * @copyright Copyright (C) 2010-2021, 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\Model;
 
-use Friendica\Core\Cache\Cache;
-use Friendica\Core\Config;
-use Friendica\Core\L10n;
+use Friendica\Core\Cache\Duration;
 use Friendica\Core\Logger;
 use Friendica\Core\System;
 use Friendica\Database\DBA;
 use Friendica\Database\DBStructure;
 use Friendica\DI;
+use Friendica\Model\Storage\ExternalResource;
+use Friendica\Model\Storage\InvalidClassStorageException;
+use Friendica\Model\Storage\ReferenceStorageException;
+use Friendica\Model\Storage\StorageException;
 use Friendica\Model\Storage\SystemResource;
 use Friendica\Object\Image;
 use Friendica\Util\DateTimeFormat;
 use Friendica\Util\Images;
-use Friendica\Util\Network;
-use Friendica\Util\Security;
+use Friendica\Security\Security;
+use Friendica\Util\Proxy;
 use Friendica\Util\Strings;
 
 require_once "include/dba.php";
@@ -29,8 +46,10 @@ require_once "include/dba.php";
  */
 class Photo
 {
+       const CONTACT_PHOTOS = 'Contact Photos';
+
        /**
-        * @brief Select rows from the photo table and returns them as array
+        * Select rows from the photo table and returns them as array
         *
         * @param array $fields     Array of selected fields, empty for all
         * @param array $conditions Array of fields for conditions
@@ -51,7 +70,7 @@ class Photo
        }
 
        /**
-        * @brief Retrieve a single record from the photo table
+        * Retrieve a single record from the photo table
         *
         * @param array $fields     Array of selected fields, empty for all
         * @param array $conditions Array of fields for conditions
@@ -72,7 +91,7 @@ class Photo
        }
 
        /**
-        * @brief Get photos for user id
+        * Get photos for user id
         *
         * @param integer $uid        User id
         * @param string  $resourceid Rescource ID of the photo
@@ -93,7 +112,7 @@ class Photo
        }
 
        /**
-        * @brief Get a photo for user id
+        * Get a photo for user id
         *
         * @param integer $uid        User id
         * @param string  $resourceid Rescource ID of the photo
@@ -116,7 +135,7 @@ class Photo
        }
 
        /**
-        * @brief Get a single photo given resource id and scale
+        * Get a single photo given resource id and scale
         *
         * This method checks for permissions. Returns associative array
         * on success, "no sign" image info, if user has no permission,
@@ -128,7 +147,7 @@ class Photo
         * @return boolean|array
         * @throws \Exception
         */
-       public static function getPhoto($resourceid, $scale = 0)
+       public static function getPhoto(string $resourceid, int $scale = 0)
        {
                $r = self::selectFirst(["uid"], ["resource-id" => $resourceid]);
                if (!DBA::isResult($r)) {
@@ -137,7 +156,9 @@ class Photo
 
                $uid = $r["uid"];
 
-               $sql_acl = Security::getPermissionsSQLByUserId($uid);
+               $accessible = $uid ? (bool)DI::pConfig()->get($uid, 'system', 'accessible-photos', false) : false;
+
+               $sql_acl = Security::getPermissionsSQLByUserId($uid, $accessible);
 
                $conditions = ["`resource-id` = ? AND `scale` <= ? " . $sql_acl, $resourceid, $scale];
                $params = ["order" => ["scale" => true]];
@@ -147,7 +168,7 @@ class Photo
        }
 
        /**
-        * @brief Check if photo with given conditions exists
+        * Check if photo with given conditions exists
         *
         * @param array $conditions Array of extra conditions
         *
@@ -161,38 +182,61 @@ class Photo
 
 
        /**
-        * @brief Get Image object for given row id. null if row id does not exist
+        * Get Image data for given row id. null if row id does not exist
         *
         * @param array $photo Photo data. Needs at least 'id', 'type', 'backend-class', 'backend-ref'
         *
         * @return \Friendica\Object\Image
-        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
-        * @throws \ImagickException
         */
-       public static function getImageForPhoto(array $photo)
+       public static function getImageDataForPhoto(array $photo)
        {
-               $backendClass = DI::storageManager()->getByName($photo['backend-class'] ?? '');
-               if ($backendClass === null) {
-                       // legacy data storage in "data" column
-                       $i = self::selectFirst(['data'], ['id' => $photo['id']]);
-                       if ($i === false) {
-                               return null;
-                       }
-                       $data = $i['data'];
-               } else {
-                       $backendRef = $photo['backend-ref'] ?? '';
-                       $data = $backendClass->get($backendRef);
+               if (!empty($photo['data'])) {
+                       return $photo['data'];
                }
 
-               if (empty($data)) {
-                       return null;
+               try {
+                       $backendClass = DI::storageManager()->getByName($photo['backend-class'] ?? '');
+                       /// @todo refactoring this returning, because the storage returns a "string" which is casted in different ways - a check "instanceof Image" will fail!
+                       return $backendClass->get($photo['backend-ref'] ?? '');
+               } catch (InvalidClassStorageException $storageException) {
+                       try {
+                               // legacy data storage in "data" column
+                               $i = self::selectFirst(['data'], ['id' => $photo['id']]);
+                               if ($i !== false) {
+                                       return $i['data'];
+                               } else {
+                                       DI::logger()->info('Stored legacy data is empty', ['photo' => $photo]);
+                               }
+                       } catch (\Exception $exception) {
+                               DI::logger()->info('Unexpected database exception', ['photo' => $photo, 'exception' => $exception]);
+                       }
+               } catch (ReferenceStorageException $referenceStorageException) {
+                       DI::logger()->debug('Invalid reference for photo', ['photo' => $photo, 'exception' => $referenceStorageException]);
+               } catch (StorageException $storageException) {
+                       DI::logger()->info('Unexpected storage exception', ['photo' => $photo, 'exception' => $storageException]);
+               } catch (\ImagickException $imagickException) {
+                       DI::logger()->info('Unexpected imagick exception', ['photo' => $photo, 'exception' => $imagickException]);
                }
 
-               return new Image($data, $photo['type']);
+               return null;
+       }
+
+       /**
+        * Get Image object for given row id. null if row id does not exist
+        *
+        * @param array $photo Photo data. Needs at least 'id', 'type', 'backend-class', 'backend-ref'
+        *
+        * @return \Friendica\Object\Image
+        * @throws \Friendica\Network\HTTPException\InternalServerErrorException
+        * @throws \ImagickException
+        */
+       public static function getImageForPhoto(array $photo): Image
+       {
+               return new Image(self::getImageDataForPhoto($photo), $photo['type']);
        }
 
        /**
-        * @brief Return a list of fields that are associated with the photo table
+        * Return a list of fields that are associated with the photo table
         *
         * @return array field list
         * @throws \Exception
@@ -206,16 +250,20 @@ class Photo
        }
 
        /**
-        * @brief Construct a photo array for a system resource image
+        * Construct a photo array for a system resource image
         *
         * @param string $filename Image file name relative to code root
-        * @param string $mimetype Image mime type. Defaults to "image/jpeg"
+        * @param string $mimetype Image mime type. Is guessed by file name when empty.
         *
         * @return array
         * @throws \Exception
         */
-       public static function createPhotoForSystemResource($filename, $mimetype = "image/jpeg")
+       public static function createPhotoForSystemResource($filename, $mimetype = '')
        {
+               if (empty($mimetype)) {
+                       $mimetype = Images::guessTypeByExtension($filename);
+               }
+
                $fields = self::getFields();
                $values = array_fill(0, count($fields), "");
 
@@ -228,9 +276,36 @@ class Photo
                return $photo;
        }
 
+       /**
+        * Construct a photo array for an external resource image
+        *
+        * @param string $url      Image URL
+        * @param int    $uid      User ID of the requesting person
+        * @param string $mimetype Image mime type. Is guessed by file name when empty.
+        *
+        * @return array
+        * @throws \Exception
+        */
+       public static function createPhotoForExternalResource($url, $uid = 0, $mimetype = '')
+       {
+               if (empty($mimetype)) {
+                       $mimetype = Images::guessTypeByExtension($url);
+               }
+
+               $fields = self::getFields();
+               $values = array_fill(0, count($fields), "");
+
+               $photo                  = array_combine($fields, $values);
+               $photo['backend-class'] = ExternalResource::NAME;
+               $photo['backend-ref']   = json_encode(['url' => $url, 'uid' => $uid]);
+               $photo['type']          = $mimetype;
+               $photo['cacheable']     = true;
+
+               return $photo;
+       }
 
        /**
-        * @brief store photo metadata in db and binary in default backend
+        * store photo metadata in db and binary in default backend
         *
         * @param Image   $Image     Image object with data
         * @param integer $uid       User ID
@@ -267,28 +342,28 @@ class Photo
                // Get defined storage backend.
                // if no storage backend, we use old "data" column in photo table.
                // if is an existing photo, reuse same backend
-               $data = "";
+               $data        = "";
                $backend_ref = "";
+               $storage     = "";
 
-               if (DBA::isResult($existing_photo)) {
-                       $backend_ref = (string)$existing_photo["backend-ref"];
-                       $storage = DI::storageManager()->getByName($existing_photo["backend-class"] ?? '');
-               } else {
-                       $storage = DI::storage();
-               }
-
-               if ($storage === null) {
-                       $data = $Image->asString();
-               } else {
+               try {
+                       if (DBA::isResult($existing_photo)) {
+                               $backend_ref = (string)$existing_photo["backend-ref"];
+                               $storage     = DI::storageManager()->getWritableStorageByName($existing_photo["backend-class"] ?? '');
+                       } else {
+                               $storage = DI::storage();
+                       }
                        $backend_ref = $storage->put($Image->asString(), $backend_ref);
+               } catch (InvalidClassStorageException $storageException) {
+                       $data = $Image->asString();
                }
 
-
                $fields = [
                        "uid" => $uid,
                        "contact-id" => $cid,
                        "guid" => $guid,
                        "resource-id" => $rid,
+                       "hash" => md5($Image->asString()),
                        "created" => $created,
                        "edited" => DateTimeFormat::utcNow(),
                        "filename" => basename($filename),
@@ -320,7 +395,7 @@ class Photo
 
 
        /**
-        * @brief Delete info from table and data from storage
+        * Delete info from table and data from storage
         *
         * @param array $conditions Field condition(s)
         * @param array $options    Options array, Optional
@@ -333,20 +408,28 @@ class Photo
        public static function delete(array $conditions, array $options = [])
        {
                // get photo to delete data info
-               $photos = self::selectToArray(['backend-class', 'backend-ref'], $conditions);
-
-               foreach($photos as $photo) {
-                       $backend_class = DI::storageManager()->getByName($photo['backend-class'] ?? '');
-                       if ($backend_class !== null) {
-                               $backend_class->delete($photo["backend-ref"] ?? '');
+               $photos = DBA::select('photo', ['id', 'backend-class', 'backend-ref'], $conditions);
+
+               while ($photo = DBA::fetch($photos)) {
+                       try {
+                               $backend_class = DI::storageManager()->getWritableStorageByName($photo['backend-class'] ?? '');
+                               $backend_class->delete($photo['backend-ref'] ?? '');
+                               // Delete the photos after they had been deleted successfully
+                               DBA::delete("photo", ['id' => $photo['id']]);
+                       } catch (InvalidClassStorageException $storageException) {
+                               DI::logger()->debug('Storage class not found.', ['conditions' => $conditions, 'exception' => $storageException]);
+                       } catch (ReferenceStorageException $referenceStorageException) {
+                               DI::logger()->debug('Photo doesn\'t exist.', ['conditions' => $conditions, 'exception' => $referenceStorageException]);
                        }
                }
 
+               DBA::close($photos);
+
                return DBA::delete("photo", $conditions, $options);
        }
 
        /**
-        * @brief Update a photo
+        * Update a photo
         *
         * @param array         $fields     Contains the fields that are updated
         * @param array         $conditions Condition array with the key values
@@ -365,10 +448,10 @@ class Photo
                        $photos = self::selectToArray(['backend-class', 'backend-ref'], $conditions);
 
                        foreach($photos as $photo) {
-                               $backend_class = DI::storageManager()->getByName($photo['backend-class'] ?? '');
-                               if ($backend_class !== null) {
+                               try {
+                                       $backend_class         = DI::storageManager()->getWritableStorageByName($photo['backend-class'] ?? '');
                                        $fields["backend-ref"] = $backend_class->put($img->asString(), $photo['backend-ref']);
-                               } else {
+                               } catch (InvalidClassStorageException $storageException) {
                                        $fields["data"] = $img->asString();
                                }
                        }
@@ -395,7 +478,7 @@ class Photo
                $micro = "";
 
                $photo = DBA::selectFirst(
-                       "photo", ["resource-id"], ["uid" => $uid, "contact-id" => $cid, "scale" => 4, "album" => "Contact Photos"]
+                       "photo", ["resource-id"], ["uid" => $uid, "contact-id" => $cid, "scale" => 4, "album" => self::CONTACT_PHOTOS]
                );
                if (!empty($photo['resource-id'])) {
                        $resource_id = $photo["resource-id"];
@@ -407,26 +490,48 @@ class Photo
 
                $filename = basename($image_url);
                if (!empty($image_url)) {
-                       $ret = Network::curl($image_url, true);
+                       $ret = DI::httpClient()->get($image_url);
                        $img_str = $ret->getBody();
                        $type = $ret->getContentType();
                } else {
                        $img_str = '';
+                       $type = '';
                }
 
                if ($quit_on_error && ($img_str == "")) {
                        return false;
                }
 
-               if (empty($type)) {
-                       $type = Images::guessType($image_url, true);
-               }
+               $type = Images::getMimeTypeByData($img_str, $image_url, $type);
 
                $Image = new Image($img_str, $type);
                if ($Image->isValid()) {
                        $Image->scaleToSquare(300);
 
-                       $r = self::store($Image, $uid, $cid, $resource_id, $filename, "Contact Photos", 4);
+                       $filesize = strlen($Image->asString());
+                       $maximagesize = DI::config()->get('system', 'maximagesize');
+                       if (!empty($maximagesize) && ($filesize > $maximagesize)) {
+                               Logger::info('Avatar exceeds image limit', ['uid' => $uid, 'cid' => $cid, 'maximagesize' => $maximagesize, 'size' => $filesize, 'type' => $Image->getType()]);
+                               if ($Image->getType() == 'image/gif') {
+                                       $Image->toStatic();
+                                       $Image = new Image($Image->asString(), 'image/png');
+
+                                       $filesize = strlen($Image->asString());
+                                       Logger::info('Converted gif to a static png', ['uid' => $uid, 'cid' => $cid, 'size' => $filesize, 'type' => $Image->getType()]);
+                               }
+                               if ($filesize > $maximagesize) {
+                                       foreach ([160, 80] as $pixels) {
+                                               if ($filesize > $maximagesize) {
+                                                       Logger::info('Resize', ['uid' => $uid, 'cid' => $cid, 'size' => $filesize, 'max' => $maximagesize, 'pixels' => $pixels, 'type' => $Image->getType()]);
+                                                       $Image->scaleDown($pixels);
+                                                       $filesize = strlen($Image->asString());
+                                               }
+                                       }
+                               }
+                               Logger::info('Avatar is resized', ['uid' => $uid, 'cid' => $cid, 'size' => $filesize, 'type' => $Image->getType()]);
+                       }
+
+                       $r = self::store($Image, $uid, $cid, $resource_id, $filename, self::CONTACT_PHOTOS, 4);
 
                        if ($r === false) {
                                $photo_failure = true;
@@ -434,7 +539,7 @@ class Photo
 
                        $Image->scaleDown(80);
 
-                       $r = self::store($Image, $uid, $cid, $resource_id, $filename, "Contact Photos", 5);
+                       $r = self::store($Image, $uid, $cid, $resource_id, $filename, self::CONTACT_PHOTOS, 5);
 
                        if ($r === false) {
                                $photo_failure = true;
@@ -442,7 +547,7 @@ class Photo
 
                        $Image->scaleDown(48);
 
-                       $r = self::store($Image, $uid, $cid, $resource_id, $filename, "Contact Photos", 6);
+                       $r = self::store($Image, $uid, $cid, $resource_id, $filename, self::CONTACT_PHOTOS, 6);
 
                        if ($r === false) {
                                $photo_failure = true;
@@ -481,9 +586,10 @@ class Photo
                }
 
                if ($photo_failure) {
-                       $image_url = DI::baseUrl() . "/images/person-300.jpg";
-                       $thumb = DI::baseUrl() . "/images/person-80.jpg";
-                       $micro = DI::baseUrl() . "/images/person-48.jpg";
+                       $contact = Contact::getById($cid) ?: [];
+                       $image_url = Contact::getDefaultAvatar($contact, Proxy::SIZE_SMALL);
+                       $thumb = Contact::getDefaultAvatar($contact, Proxy::SIZE_THUMB);
+                       $micro = Contact::getDefaultAvatar($contact, Proxy::SIZE_MICRO);
                }
 
                return [$image_url, $thumb, $micro];
@@ -525,7 +631,7 @@ class Photo
        }
 
        /**
-        * @brief Fetch the photo albums that are available for a viewer
+        * Fetch the photo albums that are available for a viewer
         *
         * The query in this function is cost intensive, so it is cached.
         *
@@ -542,7 +648,7 @@ class Photo
                $key = "photo_albums:".$uid.":".local_user().":".remote_user();
                $albums = DI::cache()->get($key);
                if (is_null($albums) || $update) {
-                       if (!Config::get("system", "no_count", false)) {
+                       if (!DI::config()->get("system", "no_count", false)) {
                                /// @todo This query needs to be renewed. It is really slow
                                // At this time we just store the data in the cache
                                $albums = q("SELECT COUNT(DISTINCT `resource-id`) AS `total`, `album`, ANY_VALUE(`created`) AS `created`
@@ -550,8 +656,8 @@ class Photo
                                        WHERE `uid` = %d  AND `album` != '%s' AND `album` != '%s' $sql_extra
                                        GROUP BY `album` ORDER BY `created` DESC",
                                        intval($uid),
-                                       DBA::escape("Contact Photos"),
-                                       DBA::escape(L10n::t("Contact Photos"))
+                                       DBA::escape(self::CONTACT_PHOTOS),
+                                       DBA::escape(DI::l10n()->t(self::CONTACT_PHOTOS))
                                );
                        } else {
                                // This query doesn't do the count and is much faster
@@ -559,11 +665,11 @@ class Photo
                                        FROM `photo` USE INDEX (`uid_album_scale_created`)
                                        WHERE `uid` = %d  AND `album` != '%s' AND `album` != '%s' $sql_extra",
                                        intval($uid),
-                                       DBA::escape("Contact Photos"),
-                                       DBA::escape(L10n::t("Contact Photos"))
+                                       DBA::escape(self::CONTACT_PHOTOS),
+                                       DBA::escape(DI::l10n()->t(self::CONTACT_PHOTOS))
                                );
                        }
-                       DI::cache()->set($key, $albums, Cache::DAY);
+                       DI::cache()->set($key, $albums, Duration::DAY);
                }
                return $albums;
        }
@@ -576,7 +682,7 @@ class Photo
        public static function clearAlbumCache($uid)
        {
                $key = "photo_albums:".$uid.":".local_user().":".remote_user();
-               DI::cache()->set($key, null, Cache::DAY);
+               DI::cache()->set($key, null, Duration::DAY);
        }
 
        /**
@@ -648,21 +754,51 @@ class Photo
                                'resource-id' => $image_rid, 'uid' => $uid
                        ];
                        if (!Photo::exists($condition)) {
+                               $photo = self::selectFirst(['allow_cid', 'allow_gid', 'deny_cid', 'deny_gid', 'uid'], ['resource-id' => $image_rid]);
+                               if (!DBA::isResult($photo)) {
+                                       Logger::info('Image not found', ['resource-id' => $image_rid]);
+                               } else {
+                                       Logger::info('Mismatching permissions', ['condition' => $condition, 'photo' => $photo]);
+                               }
                                continue;
                        }
 
-                       /// @todo Check if $str_contact_allow does contain a public forum. Then set the permissions to public.
+                       /**
+                        * @todo Existing permissions need to be mixed with the new ones.
+                        * Otherwise this creates problems with sharing the same picture multiple times
+                        * Also check if $str_contact_allow does contain a public forum.
+                        * Then set the permissions to public.
+                        */
 
-                       $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
-                                       'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
-                       $condition = ['resource-id' => $image_rid, 'uid' => $uid];
-                       Logger::info('Set permissions', ['condition' => $condition, 'permissions' => $fields]);
-                       Photo::update($fields, $condition);
+                       self::setPermissionForRessource($image_rid, $uid, $str_contact_allow, $str_group_allow, $str_contact_deny, $str_group_deny);
                }
 
                return true;
        }
 
+       /**
+        * Add permissions to photo ressource
+        * @todo mix with previous photo permissions
+        * 
+        * @param string $image_rid
+        * @param integer $uid
+        * @param string $str_contact_allow
+        * @param string $str_group_allow
+        * @param string $str_contact_deny
+        * @param string $str_group_deny
+        * @return void
+        */
+       public static function setPermissionForRessource(string $image_rid, int $uid, string $str_contact_allow, string $str_group_allow, string $str_contact_deny, string $str_group_deny)
+       {
+               $fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
+               'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny,
+               'accessible' => DI::pConfig()->get($uid, 'system', 'accessible-photos', false)];
+
+               $condition = ['resource-id' => $image_rid, 'uid' => $uid];
+               Logger::info('Set permissions', ['condition' => $condition, 'permissions' => $fields]);
+               Photo::update($fields, $condition);
+       }
+
        /**
         * Strips known picture extensions from picture links
         *
@@ -680,30 +816,33 @@ class Photo
        }
 
        /**
-        * Returns the GUID from picture links
+        * Fetch the guid and scale from picture links
         *
         * @param string $name Picture link
-        * @return string GUID
-        * @throws \Exception
+        * @return array
         */
-       public static function getGUID($name)
+       public static function getResourceData(string $name):array
        {
                $base = DI::baseUrl()->get();
 
                $guid = str_replace([Strings::normaliseLink($base), '/photo/'], '', Strings::normaliseLink($name));
 
+               if (parse_url($guid, PHP_URL_SCHEME)) {
+                       return [];
+               }
+
                $guid = self::stripExtension($guid);
                if (substr($guid, -2, 1) != "-") {
-                       return '';
+                       return [];
                }
 
                $scale = intval(substr($guid, -1, 1));
                if (!is_numeric($scale)) {
-                       return '';
+                       return [];
                }
 
                $guid = substr($guid, 0, -2);
-               return $guid;
+               return ['guid' => $guid, 'scale' => $scale];
        }
 
        /**
@@ -715,13 +854,27 @@ class Photo
         */
        public static function isLocal($name)
        {
-               $guid = self::getGUID($name);
+               return (bool)self::getIdForName($name);
+       }
 
-               if (empty($guid)) {
-                       return false;
+       /**
+        * Return the id of a local photo
+        *
+        * @param string $name Picture link
+        * @return int
+        */
+       public static function getIdForName($name)
+       {
+               $data = self::getResourceData($name);
+               if (empty($data)) {
+                       return 0;
                }
 
-               return DBA::exists('photo', ['resource-id' => $guid]);
+               $photo = DBA::selectFirst('photo', ['id'], ['resource-id' => $data['guid'], 'scale' => $data['scale']]);
+               if (!empty($photo['id'])) {
+                       return $photo['id'];
+               }
+               return 0;
        }
 
        /**
@@ -743,4 +896,167 @@ class Photo
 
                return DBA::exists('photo', ['resource-id' => $guid]);
        }
+
+       /**
+        * 
+        * @param int   $uid   User ID
+        * @param array $files uploaded file array
+        * @return array photo record
+        */
+       public static function upload(int $uid, array $files)
+       {
+               Logger::info('starting new upload');
+
+               $user = User::getOwnerDataById($uid);
+               if (empty($user)) {
+                       Logger::notice('User not found', ['uid' => $uid]);
+                       return [];
+               }
+
+               if (empty($files)) {
+                       Logger::notice('Empty upload file');
+                       return [];
+               }
+
+               if (!empty($files['tmp_name'])) {
+                       if (is_array($files['tmp_name'])) {
+                               $src = $files['tmp_name'][0];
+                       } else {
+                               $src = $files['tmp_name'];
+                       }
+               } else {
+                       $src = '';
+               }
+
+               if (!empty($files['name'])) {
+                       if (is_array($files['name'])) {
+                               $filename = basename($files['name'][0]);
+                       } else {
+                               $filename = basename($files['name']);
+                       }
+               } else {
+                       $filename = '';
+               }
+
+               if (!empty($files['size'])) {
+                       if (is_array($files['size'])) {
+                               $filesize = intval($files['size'][0]);
+                       } else {
+                               $filesize = intval($files['size']);
+                       }
+               } else {
+                       $filesize = 0;
+               }
+
+               if (!empty($files['type'])) {
+                       if (is_array($files['type'])) {
+                               $filetype = $files['type'][0];
+                       } else {
+                               $filetype = $files['type'];
+                       }
+               } else {
+                       $filetype = '';
+               }
+
+               if (empty($src)) {
+                       Logger::notice('No source file name', ['uid' => $uid, 'files' => $files]);
+                       return [];
+               }
+
+               $filetype = Images::getMimeTypeBySource($src, $filename, $filetype);
+
+               Logger::info('File upload', ['src' => $src, 'filename' => $filename, 'size' => $filesize, 'type' => $filetype]);
+
+               $imagedata = @file_get_contents($src);
+               $Image = new Image($imagedata, $filetype);
+               if (!$Image->isValid()) {
+                       Logger::notice('Image is unvalid', ['uid' => $uid, 'files' => $files]);
+                       return [];
+               }
+
+               $Image->orient($src);
+               @unlink($src);
+
+               $max_length = DI::config()->get('system', 'max_image_length');
+               if (!$max_length) {
+                       $max_length = MAX_IMAGE_LENGTH;
+               }
+               if ($max_length > 0) {
+                       $Image->scaleDown($max_length);
+                       $filesize = strlen($Image->asString());
+                       Logger::info('File upload: Scaling picture to new size', ['max-length' => $max_length]);
+               }
+
+               $width = $Image->getWidth();
+               $height = $Image->getHeight();
+
+               $maximagesize = DI::config()->get('system', 'maximagesize');
+
+               if (!empty($maximagesize) && ($filesize > $maximagesize)) {
+                       // Scale down to multiples of 640 until the maximum size isn't exceeded anymore
+                       foreach ([5120, 2560, 1280, 640] as $pixels) {
+                               if (($filesize > $maximagesize) && (max($width, $height) > $pixels)) {
+                                       Logger::info('Resize', ['size' => $filesize, 'width' => $width, 'height' => $height, 'max' => $maximagesize, 'pixels' => $pixels]);
+                                       $Image->scaleDown($pixels);
+                                       $filesize = strlen($Image->asString());
+                                       $width = $Image->getWidth();
+                                       $height = $Image->getHeight();
+                               }
+                       }
+                       if ($filesize > $maximagesize) {
+                               @unlink($src);
+                               Logger::notice('Image size is too big', ['size' => $filesize, 'max' => $maximagesize]);
+                               return [];
+                       }
+               }
+
+               $resource_id = Photo::newResource();
+               $album       = DI::l10n()->t('Wall Photos');
+               $defperm     = '<' . $user['id'] . '>';
+
+               $smallest = 0;
+
+               $r = Photo::store($Image, $user['uid'], 0, $resource_id, $filename, $album, 0, 0, $defperm);
+               if (!$r) {
+                       Logger::notice('Photo could not be stored');
+                       return [];
+               }
+
+               if ($width > 640 || $height > 640) {
+                       $Image->scaleDown(640);
+                       $r = Photo::store($Image, $user['uid'], 0, $resource_id, $filename, $album, 1, 0, $defperm);
+                       if ($r) {
+                               $smallest = 1;
+                       }
+               }
+
+               if ($width > 320 || $height > 320) {
+                       $Image->scaleDown(320);
+                       $r = Photo::store($Image, $user['uid'], 0, $resource_id, $filename, $album, 2, 0, $defperm);
+                       if ($r && ($smallest == 0)) {
+                               $smallest = 2;
+                       }
+               }
+
+               $condition = ['resource-id' => $resource_id];
+               $photo = self::selectFirst(['id', 'datasize', 'width', 'height', 'type'], $condition, ['order' => ['width' => true]]);
+               if (empty($photo)) {
+                       Logger::notice('Photo not found', ['condition' => $condition]);
+                       return [];
+               }
+
+               $picture = [];
+
+               $picture['id']        = $photo['id'];
+               $picture['size']      = $photo['datasize'];
+               $picture['width']     = $photo['width'];
+               $picture['height']    = $photo['height'];
+               $picture['type']      = $photo['type'];
+               $picture['albumpage'] = DI::baseUrl() . '/photos/' . $user['nickname'] . '/image/' . $resource_id;
+               $picture['picture']   = DI::baseUrl() . '/photo/{$resource_id}-0.' . $Image->getExt();
+               $picture['preview']   = DI::baseUrl() . '/photo/{$resource_id}-{$smallest}.' . $Image->getExt();
+
+               Logger::info('upload done', ['picture' => $picture]);
+               return $picture;
+       }
 }