130 lines
3.9 KiB
PHP
130 lines
3.9 KiB
PHP
<?php
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/**
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* Copyright (c) 2013 Christopher Schäpers <christopher@schaepers.it>
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* This file is licensed under the Affero General Public License version 3 or
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* later.
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* See the COPYING-README file.
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*/
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/**
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* This class gets and sets users avatars.
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* Avalaible backends are local (saved in users root at avatar.[png|jpg]) and gravatar.
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* However the get function is easy to extend with further backends.
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*/
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class OC_Avatar {
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/**
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* @brief gets a link to the users avatar
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* @param $user string username
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* @param $size integer size in px of the avatar, defaults to 64
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* @return mixed link to the avatar, false if avatars are disabled
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*/
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public static function get ($user, $size = 64) {
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$mode = OC_Config::getValue("avatar", "local");
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if ($mode === "none") {
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// avatars are disabled
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return false;
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} elseif ($mode === "gravatar") {
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return \OC_Avatar::getGravatar($user, $size);
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} elseif ($mode === "local") {
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return \OC_Avatar::getLocalAvatar($user, $size);
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}
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}
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/**
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* @brief returns the active avatar mode
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* @return string active avatar mode
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*/
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public static function getMode () {
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return OC_Config::getValue("avatar", "local");
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}
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/**
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* @brief sets the users local avatar
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* @param $user string user to set the avatar for
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* @param $img mixed imagedata to set a new avatar, or false to delete the current avatar
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* @param $type string fileextension
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* @throws Exception if the provided image is not valid, or not a square
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* @return true on success
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*/
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public static function setLocalAvatar ($user, $img, $type) {
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$view = new \OC\Files\View('/'.$user);
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if ($img === false) {
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$view->unlink('avatar.jpg');
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$view->unlink('avatar.png');
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return true;
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} else {
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$img = new OC_Image($img);
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if (!( $img->valid() && ($img->height() === $img->width()) )) {
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throw new Exception();
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}
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$view->unlink('avatar.jpg');
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$view->unlink('avatar.png');
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$view->file_put_contents('avatar.'.$type, $img);
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return true;
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}
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}
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/**
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* @brief get the users gravatar
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* @param $user string which user to get the gravatar for
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* @param size integer size in px of the avatar, defaults to 64
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* @return string link to the gravatar, or base64encoded, html-ready image
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*/
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public static function getGravatar ($user, $size = 64) {
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$email = OC_Preferences::getValue($user, 'settings', 'email');
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if ($email !== null) {
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$emailhash = md5(strtolower(trim($email)));
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$url = "http://www.gravatar.com/avatar/".$emailhash."?s=".$size;
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return $url;
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} else {
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return \OC_Avatar::wrapIntoImg(\OC_Avatar::getDefaultAvatar($size), 'png');
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}
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}
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/**
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* @brief get the local avatar
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* @param $user string which user to get the avatar for
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* @param $size integer size in px of the avatar, defaults to 64
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* @return string base64encoded encoded, html-ready image
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*/
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public static function getLocalAvatar ($user, $size = 64) {
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$view = new \OC\Files\View('/'.$user);
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if ($view->file_exists('avatar.jpg')) {
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$type = 'jpg';
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} elseif ($view->file_exists('avatar.png')) {
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$type = 'png';
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} else {
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return \OC_Avatar::wrapIntoImg(\OC_Avatar::getDefaultAvatar($size), 'png');
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}
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$avatar = new OC_Image($view->file_get_contents('avatar.'.$type));
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$avatar->resize($size);
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return \OC_Avatar::wrapIntoImg((string)$avatar, $type);
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}
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/**
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* @brief gets the default avatar
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* @param $size integer size of the avatar in px, defaults to 64
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* @return string base64 encoded default avatar
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*/
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public static function getDefaultAvatar ($size = 64) {
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$default = new OC_Image(OC::$SERVERROOT."/core/img/defaultavatar.png");
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$default->resize($size);
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return (string)$default;
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}
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/**
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* @brief wrap a base64encoded image, so it can be used in html
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* @param $img string base64encoded image
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* @param $type string imagetype
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* @return string wrapped image
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*/
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public static function wrapIntoImg($img, $type) {
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return 'data:image/'.$type.';base64,'.$img;
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}
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}
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