1 files changed, 114 insertions, 0 deletions
diff --git a/mod/openid_client/lib/helpers.php b/mod/openid_client/lib/helpers.php
new file mode 100644
index 000000000..3fc101c42
--- /dev/null
+++ b/mod/openid_client/lib/helpers.php
@@ -0,0 +1,114 @@
+<?php
+/**
+ * Helper functions for the OpenID client plugin
+ */
+
+/**
+ * Serves a page to the new user to determine account values
+ *
+ * This should only be called after validating the OpenID response.
+ *
+ * @param array $data Key value pairs extracted from the response
+ * @return bool
+ */
+function openid_client_registration_page_handler(array $data) {
+
+	if (!is_array($data)) {
+		return false;
+	}
+
+	$title = elgg_echo('openid_client:create');
+
+	$vars = openid_client_prepare_registration_vars($data);
+	$content = elgg_view('openid_client/register', $vars);
+
+	$params = array(
+		'title' => $title,
+		'content' => $content,
+	);
+	$body = elgg_view_layout('one_column', $params);
+	echo elgg_view_page($title, $body);
+
+	return true;
+}
+
+/**
+ * Create the form vars for registration
+ *
+ * @param array $data
+ * @return array
+ */
+function openid_client_prepare_registration_vars(array $data) {
+	$vars = array();
+
+	$vars['openid_identifier'] = $data['openid_identifier'];
+
+	// username
+	if (isset($data['username'])) {
+		$vars['username'] = $data['username'];
+	} else if (isset($data['email'])) {
+		$vars['username'] = array_shift(explode('@', $data['email']));
+	} else {
+		$vars['username'] = null;
+	}
+
+	// is the username available
+	if ($vars['username']) {
+		$vars['is_username_available'] = openid_client_is_username_available($vars['username']);
+	}
+
+	// is the username valid
+	try {
+		$vars['is_username_valid'] = validate_username($vars['username']);
+	} catch (RegistrationException $e) {
+		$vars['is_username_valid'] = false;
+	}
+
+	// the rest
+	$vars['email'] = elgg_extract('email', $data);
+	$vars['name'] = elgg_extract('name', $data);
+
+	if ($vars['email']) {
+		$vars['is_email_available'] = openid_client_is_email_available($vars['email']);
+	}
+
+	return $vars;
+}
+
+/**
+ * Is this username available?
+ *
+ * @param string $username The username
+ * @return bool 
+ */
+function openid_client_is_username_available($username) {
+	$db_prefix = elgg_get_config('dbprefix');
+	$username = sanitize_string($username);
+
+	$query = "SELECT count(*) AS total FROM {$db_prefix}users_entity WHERE username = '$username'";
+	$result = get_data_row($query);
+	if ($result->total == 0) {
+		return true;
+	} else {
+		return false;
+	}
+}
+
+/**
+ * Is this email address available?
+ *
+ * @param string $email Email address
+ * @return bool
+ */
+function openid_client_is_email_available($email) {
+	$db_prefix = elgg_get_config('dbprefix');
+	$email = sanitize_string($email);
+
+	$query = "SELECT count(*) AS total FROM {$db_prefix}users_entity WHERE email = '$email'";
+	$result = get_data_row($query);
+	if ($result->total == 0) {
+		return true;
+	} else {
+		return false;
+	}
+}