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<?php
/**
* Class LibravatarReplace
*
* everything for the plugin to work
*
* @author Gabriel Hautclocq
* @author Christian Archer <chrstnarchr@aol.com>
* @copyright © 2011, Gabriel Hautclocq
* @copyright © 2013, Christian Archer
* @license ISC
*/
class LibravatarReplace
{
private $plugin_file;
private $bp_catched_last_email;
const MODULE_NAME = 'libravatar-replace';
const OPTION_LOCAL_CACHE_ENABLED = 'libravatar_replace_cache_enabled';
const OPTION_LOCAL_CACHE_ENABLED_DEFAULT = 0;
public function __construct($plugin_file)
{
$this->plugin_file = $plugin_file;
}
public function init()
{
load_plugin_textdomain('libravatar-replace', false, dirname(plugin_basename($this->plugin_file)));
}
/**
* @return bool true if the connection uses SSL
*/
private function isSsl()
{
if (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] != 'off') {
return true;
} elseif ($_SERVER['SERVER_PORT'] == 443) {
return true;
} else {
return false;
}
}
/**
* Change Avatar Defaults
*
* @param array $avatar_defaults
* @return mixed
*/
public function filterAvatarDefaults($avatar_defaults)
{
$avatar_defaults['gravatar_default'] = __('Libravatar Logo', 'libravatar-replace'); // rename accordingly
return $avatar_defaults;
}
/**
* Update default avatar links so they will show defaults
*
* Can be removed when Libravatar will support forcedefault
*
* @param string $avatar_list
* @return string
*/
public function filterDefaultAvatarSelect($avatar_list)
{
return preg_replace('~/[a-f0-9]{32}~', '/' . str_repeat('0', 32), $avatar_list); // fill hash with zeros
}
/**
* Create avatar link
*
* @param string $avatar
* @param string|int $id_or_email
* @param int $size
* @param string $default
* @param string $alt
* @return string avatar HTML
*/
public function filterGetAvatar($avatar, $id_or_email, $size, $default, $alt)
{
if (false === $alt) {
$safe_alt = '';
} else {
$safe_alt = esc_attr($alt);
}
$email = '';
if (is_numeric($id_or_email)) {
$id = (int)$id_or_email;
$user = get_userdata($id);
if ($user) {
$email = $user->user_email;
}
} elseif (is_object($id_or_email)) {
if (!empty($id_or_email->user_id)) {
$id = (int)$id_or_email->user_id;
$user = get_userdata($id);
if ($user) {
$email = $user->user_email;
}
} elseif (!empty($id_or_email->comment_author_email)) {
$email = $id_or_email->comment_author_email;
}
} else {
$email = $id_or_email;
}
$libravatar = $this->getLibravatarClass();
$options = array();
$options['algorithm'] = 'md5';
$options['https'] = $this->isSsl();
if ($default && $default !== 'gravatar_default') {
$options['default'] = $default;
}
$avatar = $this->getAvatarCode($libravatar, $email, $safe_alt, $options, $size);
return $avatar;
}
/**
* @param Services_Libravatar $libravatar
* @param $email
* @param $alt
* @param $options
* @param $size
* @return string
*/
private function getAvatarCode($libravatar, $email, $alt, $options, $size)
{
$options['size'] = $size;
$url = $libravatar->getUrl($email, $options); // get normal size avatar
$srcset = array();
$size_last = false;
foreach (array(1, '1.5', 2, 3, 4) as $mul) { // use 1.5 as string to avoid regional conversions
$src_size = intval($size * $mul);
if ($src_size >= 512) {
$src_size = 512;
$size_last = true;
}
$options['size'] = $src_size;
$src_url = $libravatar->getUrl($email, $options);
$srcset []= "{$src_url} {$mul}x";
if ($size_last) {
break;
}
}
$set_urls = implode(',', $srcset);
return "<img alt='{$alt}' class='avatar avatar-{$size} photo' height='{$size}' width='{$size}' src='{$url}' srcset='{$set_urls}' />";
}
/**
* There's no way to know email on the url composing so just remember the email in the previous filter
*
* @param $email
* @return mixed
*/
public function filterBPCoreGravatarEmail($email)
{
$this->bp_catched_last_email = $email;
return $email;
}
/**
* Shitcode here :)
*
* Take the remembered email and get url from it, then extract the host
* Unfortunately there's no way to set Libravatar link with federation support more direct
*
* @return string
*/
public function filterBPGravatarUrl()
{
$default_host = 'https://seccdn.libravatar.org/avatar/';
if (empty($this->bp_catched_last_email)) {
return $default_host;
}
$libravatar = $this->getLibravatarClass();
$options = array();
$options['algorithm'] = 'md5';
$options['https'] = $this->isSsl();
$url = $libravatar->getUrl($this->bp_catched_last_email, $options);
preg_match('~^(.*/avatar/)~', $url, $matches);
return isset($matches[1]) ? $matches[1] : $default_host;
}
/**
* A factory for the avatar retriever class
*
* @return Services_Libravatar
*/
private function getLibravatarClass()
{
if ($this->isLocalCacheEnabled()) {
return new ServicesLibravatarCached($this->plugin_file);
} else {
return new ServicesLibravatarExt();
}
}
/**
* Let's put our admin page to the menu
*/
public function registerAdminMenu()
{
add_submenu_page(
'options-general.php',
'Libravatar Replace Settings',
'Libravatar',
'administrator',
self::MODULE_NAME,
array($this, 'adminPage')
);
}
/**
* Tell the admin page what settings are safe to be set
*/
public function registerSettings()
{
register_setting(self::MODULE_NAME, self::OPTION_LOCAL_CACHE_ENABLED);
}
public function registerActions($links, $file)
{
if ($file === plugin_basename($this->plugin_file)) {
$links[] = '<a href="options-general.php?page=libravatar-replace">' . __('Settings') . '</a>';
}
return $links;
}
/**
* Render the admin page
*/
public function adminPage()
{
include dirname(__FILE__) . '/../views/admin.php';
}
/**
* Get local cache enabled option
*
* @return bool
*/
private function isLocalCacheEnabled()
{
return get_option(self::OPTION_LOCAL_CACHE_ENABLED, self::OPTION_LOCAL_CACHE_ENABLED_DEFAULT) ? true : false;
}
}