337 lines
8.5 KiB
PHP
337 lines
8.5 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* @copyright Copyright (c) 2018, Michael Weimann <mail@michael-weimann.eu>
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*
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* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
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* @author Michael Weimann <mail@michael-weimann.eu>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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namespace OC\Avatar;
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use OC\NotSquareException;
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use OC\User\User;
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use OC_Image;
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use OCP\Files\NotFoundException;
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use OCP\Files\NotPermittedException;
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use OCP\Files\SimpleFS\ISimpleFile;
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use OCP\Files\SimpleFS\ISimpleFolder;
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use OCP\IConfig;
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use OCP\IImage;
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use OCP\IL10N;
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use OCP\ILogger;
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/**
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* This class represents a registered user's avatar.
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*/
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class UserAvatar extends Avatar {
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/** @var IConfig */
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private $config;
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/** @var ISimpleFolder */
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private $folder;
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/** @var IL10N */
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private $l;
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/** @var User */
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private $user;
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/**
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* UserAvatar constructor.
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*
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* @param IConfig $config The configuration
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* @param ISimpleFolder $folder The avatar files folder
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* @param IL10N $l The localization helper
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* @param User $user The user this class manages the avatar for
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* @param ILogger $logger The logger
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*/
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public function __construct(
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ISimpleFolder $folder,
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IL10N $l,
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$user,
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ILogger $logger,
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IConfig $config) {
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parent::__construct($logger);
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$this->folder = $folder;
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$this->l = $l;
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$this->user = $user;
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$this->config = $config;
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}
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/**
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* Check if an avatar exists for the user
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*
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* @return bool
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*/
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public function exists() {
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return $this->folder->fileExists('avatar.jpg') || $this->folder->fileExists('avatar.png');
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}
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/**
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* Sets the users avatar.
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*
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* @param IImage|resource|string $data An image object, imagedata or path to set a new avatar
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* @throws \Exception if the provided file is not a jpg or png image
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* @throws \Exception if the provided image is not valid
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* @throws NotSquareException if the image is not square
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* @return void
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*/
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public function set($data) {
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$img = $this->getAvatarImage($data);
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$data = $img->data();
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$this->validateAvatar($img);
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$this->remove(true);
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$type = $this->getAvatarImageType($img);
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$file = $this->folder->newFile('avatar.' . $type);
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$file->putContent($data);
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try {
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$generated = $this->folder->getFile('generated');
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$generated->delete();
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} catch (NotFoundException $e) {
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//
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}
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$this->config->setUserValue($this->user->getUID(), 'avatar', 'generated', 'false');
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$this->user->triggerChange('avatar', $file);
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}
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/**
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* Returns an image from several sources.
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*
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* @param IImage|resource|string $data An image object, imagedata or path to the avatar
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* @return IImage
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*/
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private function getAvatarImage($data) {
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if ($data instanceof IImage) {
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return $data;
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}
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$img = new OC_Image();
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if (is_resource($data) && get_resource_type($data) === 'gd') {
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$img->setResource($data);
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} elseif (is_resource($data)) {
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$img->loadFromFileHandle($data);
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} else {
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try {
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// detect if it is a path or maybe the images as string
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$result = @realpath($data);
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if ($result === false || $result === null) {
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$img->loadFromData($data);
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} else {
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$img->loadFromFile($data);
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}
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} catch (\Error $e) {
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$img->loadFromData($data);
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}
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}
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return $img;
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}
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/**
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* Returns the avatar image type.
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*
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* @param IImage $avatar
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* @return string
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*/
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private function getAvatarImageType(IImage $avatar) {
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$type = substr($avatar->mimeType(), -3);
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if ($type === 'peg') {
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$type = 'jpg';
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}
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return $type;
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}
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/**
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* Validates an avatar image:
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* - must be "png" or "jpg"
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* - must be "valid"
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* - must be in square format
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*
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* @param IImage $avatar The avatar to validate
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* @throws \Exception if the provided file is not a jpg or png image
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* @throws \Exception if the provided image is not valid
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* @throws NotSquareException if the image is not square
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*/
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private function validateAvatar(IImage $avatar) {
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$type = $this->getAvatarImageType($avatar);
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if ($type !== 'jpg' && $type !== 'png') {
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throw new \Exception($this->l->t('Unknown filetype'));
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}
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if (!$avatar->valid()) {
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throw new \Exception($this->l->t('Invalid image'));
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}
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if (!($avatar->height() === $avatar->width())) {
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throw new NotSquareException($this->l->t('Avatar image is not square'));
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}
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}
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/**
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* Removes the users avatar.
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* @return void
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* @throws \OCP\Files\NotPermittedException
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* @throws \OCP\PreConditionNotMetException
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*/
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public function remove(bool $silent = false) {
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$avatars = $this->folder->getDirectoryListing();
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$this->config->setUserValue($this->user->getUID(), 'avatar', 'version',
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(int) $this->config->getUserValue($this->user->getUID(), 'avatar', 'version', 0) + 1);
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foreach ($avatars as $avatar) {
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$avatar->delete();
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}
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$this->config->setUserValue($this->user->getUID(), 'avatar', 'generated', 'true');
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if(!$silent) {
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$this->user->triggerChange('avatar', '');
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}
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}
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/**
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* Get the extension of the avatar. If there is no avatar throw Exception
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*
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* @return string
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* @throws NotFoundException
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*/
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private function getExtension() {
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if ($this->folder->fileExists('avatar.jpg')) {
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return 'jpg';
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} elseif ($this->folder->fileExists('avatar.png')) {
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return 'png';
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}
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throw new NotFoundException;
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}
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/**
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* Returns the avatar for an user.
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*
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* If there is no avatar file yet, one is generated.
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*
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* @param int $size
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* @return ISimpleFile
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* @throws NotFoundException
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* @throws \OCP\Files\NotPermittedException
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* @throws \OCP\PreConditionNotMetException
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*/
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public function getFile($size) {
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$size = (int) $size;
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try {
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$ext = $this->getExtension();
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} catch (NotFoundException $e) {
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if (!$data = $this->generateAvatarFromSvg(1024)) {
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$data = $this->generateAvatar($this->getDisplayName(), 1024);
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}
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$avatar = $this->folder->newFile('avatar.png');
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$avatar->putContent($data);
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$ext = 'png';
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$this->folder->newFile('generated');
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$this->config->setUserValue($this->user->getUID(), 'avatar', 'generated', 'true');
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}
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if ($size === -1) {
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$path = 'avatar.' . $ext;
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} else {
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$path = 'avatar.' . $size . '.' . $ext;
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}
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try {
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$file = $this->folder->getFile($path);
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} catch (NotFoundException $e) {
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if ($size <= 0) {
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throw new NotFoundException;
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}
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if ($this->folder->fileExists('generated')) {
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if (!$data = $this->generateAvatarFromSvg($size)) {
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$data = $this->generateAvatar($this->getDisplayName(), $size);
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}
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} else {
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$avatar = new OC_Image();
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$file = $this->folder->getFile('avatar.' . $ext);
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$avatar->loadFromData($file->getContent());
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$avatar->resize($size);
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$data = $avatar->data();
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}
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try {
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$file = $this->folder->newFile($path);
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$file->putContent($data);
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} catch (NotPermittedException $e) {
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$this->logger->error('Failed to save avatar for ' . $this->user->getUID());
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throw new NotFoundException();
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}
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}
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if ($this->config->getUserValue($this->user->getUID(), 'avatar', 'generated', null) === null) {
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$generated = $this->folder->fileExists('generated') ? 'true' : 'false';
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$this->config->setUserValue($this->user->getUID(), 'avatar', 'generated', $generated);
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}
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return $file;
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}
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/**
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* Returns the user display name.
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*
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* @return string
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*/
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public function getDisplayName(): string {
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return $this->user->getDisplayName();
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}
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/**
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* Handles user changes.
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*
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* @param string $feature The changed feature
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* @param mixed $oldValue The previous value
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* @param mixed $newValue The new value
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* @throws NotPermittedException
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* @throws \OCP\PreConditionNotMetException
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*/
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public function userChanged($feature, $oldValue, $newValue) {
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// If the avatar is not generated (so an uploaded image) we skip this
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if (!$this->folder->fileExists('generated')) {
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return;
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}
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$this->remove();
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}
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/**
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* Check if the avatar of a user is a custom uploaded one
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*
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* @return bool
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*/
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public function isCustomAvatar(): bool {
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return $this->config->getUserValue($this->user->getUID(), 'avatar', 'generated', 'false') !== 'true';
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}
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}
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