friendica-addons/libravatar/libravatar.php

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<?php
/**
* Name: Libravatar Support
* Description: If there is no avatar image for a new user or contact this plugin will look for one at Libravatar. Please disable Gravatar addon if you use this one. (requires PHP >= 5.3)
* Version: 1.1
* Author: Klaus Weidenbach <http://friendica.dszdw.net/profile/klaus>
*/
/**
* Installs the plugin hook
*/
function libravatar_install() {
if (! version_compare(PHP_VERSION, '5.3.0', '>=')) {
info(t('Could NOT install Libravatar successfully.<br>It requires PHP >= 5.3') .EOL);
// avoid registering the hook
return false;
}
register_hook('avatar_lookup', 'addon/libravatar/libravatar.php', 'libravatar_lookup');
logger("registered libravatar in avatar_lookup hook");
}
/**
* Removes the plugin hook
*/
function libravatar_uninstall() {
unregister_hook('avatar_lookup', 'addon/libravatar/libravatar.php', 'libravatar_lookup');
logger("unregistered libravatar in avatar_lookup hook");
}
/**
* Looks up the avatar at Libravatar and returns the URL.
*
* @param $a array
* @param &$b array
*/
function libravatar_lookup($a, &$b) {
$default_avatar = get_config('libravatar', 'default_img');
if (! $default_avatar) {
// if not set, look up if there was one from the gravatar addon
$default_avatar = get_config('gravatar', 'default_img');
// setting default avatar if nothing configured
if (! $default_avatar)
$default_avatar = 'identicon'; // default image will be a random pattern
}
require_once 'Services/Libravatar.php';
$libravatar = new Services_Libravatar();
$libravatar->setSize($b['size']);
$libravatar->setDefault($default_avatar);
$avatar_url = $libravatar->getUrl($b['email']);
$b['url'] = $avatar_url;
$b['success'] = true;
}
/**
* Display admin settings for this addon
*/
function libravatar_plugin_admin (&$a, &$o) {
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$t = get_markup_template( "admin.tpl", "addon/libravatar" );
$default_avatar = get_config('libravatar', 'default_img');
// set default values for first configuration
if(! $default_avatar)
$default_avatar = 'identicon'; // pseudo-random geometric pattern based on email hash
// Available options for the select boxes
$default_avatars = array(
'mm' => t('generic profile image'),
'identicon' => t('random geometric pattern'),
'monsterid' => t('monster face'),
'wavatar' => t('computer generated face'),
'retro' => t('retro arcade style face'),
);
// Show warning if PHP version is too old
if (! version_compare(PHP_VERSION, '5.3.0', '>=')) {
$o = '<h5>' .t('Warning') .'</h5><p>';
$o .= sprintf(t('Your PHP version %s is lower than the required PHP >= 5.3.'), PHP_VERSION);
$o .= '<br>' .t('This addon is not functional on your server.') .'<p><br>';
return;
}
// Libravatar falls back to gravatar, so show warning about gravatar addon if enabled
$r = q("SELECT * FROM `addon` WHERE `name` = '%s' and `installed` = 1",
dbesc('gravatar')
);
if (count($r)) {
$o = '<h5>' .t('Information') .'</h5><p>' .t('Gravatar addon is installed. Please disable the Gravatar addon.<br>The Libravatar addon will fall back to Gravatar if nothing was found at Libravatar.') .'</p><br><br>';
}
// output Libravatar settings
$o .= '<input type="hidden" name="form_security_token" value="' .get_form_security_token("libravatarsave") .'">';
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$includes = array(
'$field_input' => 'field_input.tpl',
);
$includes = set_template_includes($a->theme['template_engine'], $includes);
$o .= replace_macros( $t, $includes + array(
'$submit' => t('Submit'),
'$default_avatar' => array('avatar', t('Default avatar image'), $default_avatar, t('Select default avatar image if none was found. See README'), $default_avatars),
));
}
/**
* Save admin settings
*/
function libravatar_plugin_admin_post (&$a) {
check_form_security_token('libravatarrsave');
$default_avatar = ((x($_POST, 'avatar')) ? notags(trim($_POST['avatar'])) : 'identicon');
set_config('libravatar', 'default_img', $default_avatar);
info(t('Libravatar settings updated.') .EOL);
}
?>