/**
* Avatar remove action
*
* Core action modified for Identicon plugin
*/
$user_guid = get_input('guid');
$user = get_user($user_guid);
if (!$user || !$user->canEdit()) {
register_error(elgg_echo('avatar:remove:fail'));
forward(REFERER);
}
if ($user->preferIdenticon) {
$user->preferIdenticon = false;
// Delete all identicons from diskspace
$icon_sizes = elgg_get_config('icon_sizes');
$seed = identicon_seed($user);
foreach ($icon_sizes as $name => $size_info) {
$file = new ElggFile();
$file->owner_guid = $user_guid;
$file->setFilename("identicon/{$seed}/{$name}.jpg");
$file->delete();
}
// Remove icon
unset($user->icontime);
} else {
// Delete all icons from diskspace
$icon_sizes = elgg_get_config('icon_sizes');
foreach ($icon_sizes as $name => $size_info) {
$file = new ElggFile();
$file->owner_guid = $user_guid;
$file->setFilename("profile/{$user_guid}{$name}.jpg");
/**
* This makes sure that the image is present (builds it if it isn't) and then
* displays it.
*/
function identicon_check($entity)
{
//make sure the image functions are available before trying to make avatars
if (function_exists("imagecreatetruecolor")) {
// entity is group, user or something else?
if ($entity instanceof ElggGroup) {
$file = new ElggFile();
$file->owner_guid = $entity->owner_guid;
$seed = identicon_seed($entity);
$file->setFilename('identicon/' . $seed . '/master.jpg');
$file->setMimeType('image/jpeg');
if (!$file->exists()) {
if (identicon_build_group($seed, $file)) {
return true;
} else {
// there was some error building the icon
return false;
}
} else {
// file's already there
return true;
}
} else {
if ($entity instanceof ElggUser) {
$file = new ElggFile();
$file->owner_guid = $entity->getGUID();
$seed = identicon_seed($entity);
$file->setFilename('identicon/' . $seed . '/master.jpg');
$file->setMimeType('image/jpeg');
if (!$file->exists()) {
if (identicon_build($seed, $file)) {
return true;
} else {
// there was some error building the icon
return false;
}
} else {
// file's already there
return true;
}
} else {
// neither group nor user
return false;
}
}
}
// we can't build the icon
return false;
}
$group = get_entity($group_guid);
if (!$group instanceof ElggGroup) {
header("HTTP/1.1 404 Not Found");
exit;
}
// If is the same ETag, content didn't changed.
$etag = $group->icontime . $group_guid;
if (isset($_SERVER['HTTP_IF_NONE_MATCH']) && trim($_SERVER['HTTP_IF_NONE_MATCH']) == $etag) {
header("HTTP/1.1 304 Not Modified");
exit;
}
$size = strtolower(elgg_extract('size', $vars));
if (!in_array($size, array('large', 'medium', 'small', 'tiny', 'master'))) {
$size = "medium";
}
$seed = identicon_seed($group);
$filehandler = new ElggFile();
$filehandler->owner_guid = $group->owner_guid;
$filehandler->setFilename("identicon/" . $seed . '/' . $size . ".jpg");
$success = false;
if ($filehandler->open("read")) {
if ($contents = $filehandler->read($filehandler->getSize())) {
$success = true;
}
}
if (!$success) {
$contents = elgg_view("groups/default{$size}.gif");
header("Content-type: image/gif");
} else {
header("Content-type: image/jpeg");
}
