<?php
-
/**
* @file src/Model/User.php
* @brief This file includes the User class with user related database functions
*/
-
namespace Friendica\Model;
+use DivineOmega\PasswordExposed\PasswordStatus;
+use Friendica\Core\Addon;
+use Friendica\Core\Config;
+use Friendica\Core\L10n;
+use Friendica\Core\PConfig;
use Friendica\Core\System;
use Friendica\Core\Worker;
use Friendica\Database\DBM;
+use Friendica\Model\Contact;
+use Friendica\Model\Group;
+use Friendica\Model\Photo;
+use Friendica\Object\Image;
+use Friendica\Util\Crypto;
+use Friendica\Util\DateTimeFormat;
+use Friendica\Util\Network;
use dba;
+use Exception;
+use LightOpenID;
+use function password_exposed;
require_once 'boot.php';
-require_once 'include/plugin.php';
-
+require_once 'include/dba.php';
+require_once 'include/enotify.php';
+require_once 'include/text.php';
/**
* @brief This class handles User related functions
*/
class User
{
- public static function authenticate($user_info, $password)
+ /**
+ * @brief Get owner data by user id
+ *
+ * @param int $uid
+ * @return boolean|array
+ */
+ public static function getOwnerDataById($uid) {
+ $r = dba::fetch_first("SELECT
+ `contact`.*,
+ `user`.`prvkey` AS `uprvkey`,
+ `user`.`timezone`,
+ `user`.`nickname`,
+ `user`.`sprvkey`,
+ `user`.`spubkey`,
+ `user`.`page-flags`,
+ `user`.`account-type`,
+ `user`.`prvnets`
+ FROM `contact`
+ INNER JOIN `user`
+ ON `user`.`uid` = `contact`.`uid`
+ WHERE `contact`.`uid` = ?
+ AND `contact`.`self`
+ LIMIT 1",
+ $uid
+ );
+ if (!DBM::is_result($r)) {
+ return false;
+ }
+ return $r;
+ }
+
+ /**
+ * @brief Get owner data by nick name
+ *
+ * @param int $nick
+ * @return boolean|array
+ */
+ public static function getOwnerDataByNick($nick)
{
- if (is_object($user_info)) {
- $user = (array) $user_info;
- } elseif (is_int($user_info)) {
- $user = dba::select('user',
- ['uid', 'password'],
- [
- 'uid' => $user_info,
- 'blocked' => 0,
- 'account_expired' => 0,
- 'account_removed' => 0,
- 'verified' => 1
- ],
- ['limit' => 1]
- );
- } elseif (is_string($user_info)) {
- $user = dba::fetch_first('SELECT `uid`, `password`
- FROM `user`
- WHERE (`email` = ? OR `username` = ? OR `nickname` = ?)
- AND `blocked` = 0
- AND `account_expired` = 0
- AND `account_removed` = 0
- AND `verified` = 1
- LIMIT 1',
- $user_info,
- $user_info,
- $user_info
- );
- } else {
- $user = $user_info;
+ $user = dba::selectFirst('user', ['uid'], ['nickname' => $nick]);
+ if (!DBM::is_result($user)) {
+ return false;
+ }
+ return self::getOwnerDataById($user['uid']);
+ }
+
+ /**
+ * @brief Returns the default group for a given user and network
+ *
+ * @param int $uid User id
+ * @param string $network network name
+ *
+ * @return int group id
+ */
+ public static function getDefaultGroup($uid, $network = '')
+ {
+ $default_group = 0;
+
+ if ($network == NETWORK_OSTATUS) {
+ $default_group = PConfig::get($uid, "ostatus", "default_group");
+ }
+
+ if ($default_group != 0) {
+ return $default_group;
+ }
+
+ $user = dba::selectFirst('user', ['def_gid'], ['uid' => $uid]);
+
+ if (DBM::is_result($user)) {
+ $default_group = $user["def_gid"];
}
- if (!DBM::is_result($user) || !isset($user['uid']) || !isset($user['password'])) {
+ return $default_group;
+ }
+
+
+ /**
+ * Authenticate a user with a clear text password
+ *
+ * @brief Authenticate a user with a clear text password
+ * @param mixed $user_info
+ * @param string $password
+ * @return int|boolean
+ * @deprecated since version 3.6
+ * @see User::getIdFromPasswordAuthentication()
+ */
+ public static function authenticate($user_info, $password)
+ {
+ try {
+ return self::getIdFromPasswordAuthentication($user_info, $password);
+ } catch (Exception $ex) {
return false;
}
+ }
+
+ /**
+ * Returns the user id associated with a successful password authentication
+ *
+ * @brief Authenticate a user with a clear text password
+ * @param mixed $user_info
+ * @param string $password
+ * @return int User Id if authentication is successful
+ * @throws Exception
+ */
+ public static function getIdFromPasswordAuthentication($user_info, $password)
+ {
+ $user = self::getAuthenticationInfo($user_info);
+
+ if (strpos($user['password'], '$') === false) {
+ //Legacy hash that has not been replaced by a new hash yet
+ if (self::hashPasswordLegacy($password) === $user['password']) {
+ self::updatePassword($user['uid'], $password);
+
+ return $user['uid'];
+ }
+ } elseif (!empty($user['legacy_password'])) {
+ //Legacy hash that has been double-hashed and not replaced by a new hash yet
+ //Warning: `legacy_password` is not necessary in sync with the content of `password`
+ if (password_verify(self::hashPasswordLegacy($password), $user['password'])) {
+ self::updatePassword($user['uid'], $password);
+
+ return $user['uid'];
+ }
+ } elseif (password_verify($password, $user['password'])) {
+ //New password hash
+ if (password_needs_rehash($user['password'], PASSWORD_DEFAULT)) {
+ self::updatePassword($user['uid'], $password);
+ }
+
+ return $user['uid'];
+ }
+
+ throw new Exception(L10n::t('Login failed'));
+ }
+
+ /**
+ * Returns authentication info from various parameters types
+ *
+ * User info can be any of the following:
+ * - User DB object
+ * - User Id
+ * - User email or username or nickname
+ * - User array with at least the uid and the hashed password
+ *
+ * @param mixed $user_info
+ * @return array
+ * @throws Exception
+ */
+ private static function getAuthenticationInfo($user_info)
+ {
+ $user = null;
+
+ if (is_object($user_info) || is_array($user_info)) {
+ if (is_object($user_info)) {
+ $user = (array) $user_info;
+ } else {
+ $user = $user_info;
+ }
- $password_hashed = hash('whirlpool', $password);
+ if (!isset($user['uid'])
+ || !isset($user['password'])
+ || !isset($user['legacy_password'])
+ ) {
+ throw new Exception(L10n::t('Not enough information to authenticate'));
+ }
+ } elseif (is_int($user_info) || is_string($user_info)) {
+ if (is_int($user_info)) {
+ $user = dba::selectFirst('user', ['uid', 'password', 'legacy_password'],
+ [
+ 'uid' => $user_info,
+ 'blocked' => 0,
+ 'account_expired' => 0,
+ 'account_removed' => 0,
+ 'verified' => 1
+ ]
+ );
+ } else {
+ $fields = ['uid', 'password', 'legacy_password'];
+ $condition = ["(`email` = ? OR `username` = ? OR `nickname` = ?)
+ AND NOT `blocked` AND NOT `account_expired` AND NOT `account_removed` AND `verified`",
+ $user_info, $user_info, $user_info];
+ $user = dba::selectFirst('user', $fields, $condition);
+ }
- if ($password_hashed !== $user['password']) {
+ if (!DBM::is_result($user)) {
+ throw new Exception(L10n::t('User not found'));
+ }
+ }
+
+ return $user;
+ }
+
+ /**
+ * Generates a human-readable random password
+ *
+ * @return string
+ */
+ public static function generateNewPassword()
+ {
+ return autoname(6) . mt_rand(100, 9999);
+ }
+
+ /**
+ * Checks if the provided plaintext password has been exposed or not
+ *
+ * @param string $password
+ * @return bool
+ */
+ public static function isPasswordExposed($password)
+ {
+ return password_exposed($password) === PasswordStatus::EXPOSED;
+ }
+
+ /**
+ * Legacy hashing function, kept for password migration purposes
+ *
+ * @param string $password
+ * @return string
+ */
+ private static function hashPasswordLegacy($password)
+ {
+ return hash('whirlpool', $password);
+ }
+
+ /**
+ * Global user password hashing function
+ *
+ * @param string $password
+ * @return string
+ */
+ public static function hashPassword($password)
+ {
+ if (!trim($password)) {
+ throw new Exception(L10n::t('Password can\'t be empty'));
+ }
+
+ return password_hash($password, PASSWORD_DEFAULT);
+ }
+
+ /**
+ * Updates a user row with a new plaintext password
+ *
+ * @param int $uid
+ * @param string $password
+ * @return bool
+ */
+ public static function updatePassword($uid, $password)
+ {
+ return self::updatePasswordHashed($uid, self::hashPassword($password));
+ }
+
+ /**
+ * Updates a user row with a new hashed password.
+ * Empties the password reset token field just in case.
+ *
+ * @param int $uid
+ * @param string $pasword_hashed
+ * @return bool
+ */
+ private static function updatePasswordHashed($uid, $pasword_hashed)
+ {
+ $fields = [
+ 'password' => $pasword_hashed,
+ 'pwdreset' => null,
+ 'pwdreset_time' => null,
+ 'legacy_password' => false
+ ];
+ return dba::update('user', $fields, ['uid' => $uid]);
+ }
+
+ /**
+ * @brief Checks if a nickname is in the list of the forbidden nicknames
+ *
+ * Check if a nickname is forbidden from registration on the node by the
+ * admin. Forbidden nicknames (e.g. role namess) can be configured in the
+ * admin panel.
+ *
+ * @param string $nickname The nickname that should be checked
+ * @return boolean True is the nickname is blocked on the node
+ */
+ public static function isNicknameBlocked($nickname)
+ {
+ $forbidden_nicknames = Config::get('system', 'forbidden_nicknames', '');
+ // if the config variable is empty return false
+ if (!x($forbidden_nicknames)) {
return false;
}
+ // check if the nickname is in the list of blocked nicknames
+ $forbidden = explode(',', $forbidden_nicknames);
+ $forbidden = array_map('trim', $forbidden);
+ if (in_array(strtolower($nickname), $forbidden)) {
+ return true;
+ }
+ // else return false
+ return false;
+ }
+
+ /**
+ * @brief Catch-all user creation function
+ *
+ * Creates a user from the provided data array, either form fields or OpenID.
+ * Required: { username, nickname, email } or { openid_url }
+ *
+ * Performs the following:
+ * - Sends to the OpenId auth URL (if relevant)
+ * - Creates new key pairs for crypto
+ * - Create self-contact
+ * - Create profile image
+ *
+ * @param array $data
+ * @return string
+ * @throw Exception
+ */
+ public static function create(array $data)
+ {
+ $a = get_app();
+ $return = ['user' => null, 'password' => ''];
+
+ $using_invites = Config::get('system', 'invitation_only');
+ $num_invites = Config::get('system', 'number_invites');
+
+ $invite_id = x($data, 'invite_id') ? notags(trim($data['invite_id'])) : '';
+ $username = x($data, 'username') ? notags(trim($data['username'])) : '';
+ $nickname = x($data, 'nickname') ? notags(trim($data['nickname'])) : '';
+ $email = x($data, 'email') ? notags(trim($data['email'])) : '';
+ $openid_url = x($data, 'openid_url') ? notags(trim($data['openid_url'])) : '';
+ $photo = x($data, 'photo') ? notags(trim($data['photo'])) : '';
+ $password = x($data, 'password') ? trim($data['password']) : '';
+ $password1 = x($data, 'password1') ? trim($data['password1']) : '';
+ $confirm = x($data, 'confirm') ? trim($data['confirm']) : '';
+ $blocked = x($data, 'blocked') ? intval($data['blocked']) : 0;
+ $verified = x($data, 'verified') ? intval($data['verified']) : 0;
+ $language = x($data, 'language') ? notags(trim($data['language'])) : 'en';
+
+ $publish = x($data, 'profile_publish_reg') && intval($data['profile_publish_reg']) ? 1 : 0;
+ $netpublish = strlen(Config::get('system', 'directory')) ? $publish : 0;
+
+ if ($password1 != $confirm) {
+ throw new Exception(L10n::t('Passwords do not match. Password unchanged.'));
+ } elseif ($password1 != '') {
+ $password = $password1;
+ }
+
+ if ($using_invites) {
+ if (!$invite_id) {
+ throw new Exception(L10n::t('An invitation is required.'));
+ }
+
+ if (!dba::exists('register', ['hash' => $invite_id])) {
+ throw new Exception(L10n::t('Invitation could not be verified.'));
+ }
+ }
+
+ if (!x($username) || !x($email) || !x($nickname)) {
+ if ($openid_url) {
+ if (!Network::isUrlValid($openid_url)) {
+ throw new Exception(L10n::t('Invalid OpenID url'));
+ }
+ $_SESSION['register'] = 1;
+ $_SESSION['openid'] = $openid_url;
+
+ $openid = new LightOpenID($a->get_hostname());
+ $openid->identity = $openid_url;
+ $openid->returnUrl = System::baseUrl() . '/openid';
+ $openid->required = ['namePerson/friendly', 'contact/email', 'namePerson'];
+ $openid->optional = ['namePerson/first', 'media/image/aspect11', 'media/image/default'];
+ try {
+ $authurl = $openid->authUrl();
+ } catch (Exception $e) {
+ throw new Exception(L10n::t('We encountered a problem while logging in with the OpenID you provided. Please check the correct spelling of the ID.') . EOL . EOL . L10n::t('The error message was:') . $e->getMessage(), 0, $e);
+ }
+ goaway($authurl);
+ // NOTREACHED
+ }
+
+ throw new Exception(L10n::t('Please enter the required information.'));
+ }
+
+ if (!Network::isUrlValid($openid_url)) {
+ $openid_url = '';
+ }
+
+ $err = '';
+
+ // collapse multiple spaces in name
+ $username = preg_replace('/ +/', ' ', $username);
+
+ if (mb_strlen($username) > 48) {
+ throw new Exception(L10n::t('Please use a shorter name.'));
+ }
+ if (mb_strlen($username) < 3) {
+ throw new Exception(L10n::t('Name too short.'));
+ }
+
+ // So now we are just looking for a space in the full name.
+ $loose_reg = Config::get('system', 'no_regfullname');
+ if (!$loose_reg) {
+ $username = mb_convert_case($username, MB_CASE_TITLE, 'UTF-8');
+ if (!strpos($username, ' ')) {
+ throw new Exception(L10n::t("That doesn't appear to be your full \x28First Last\x29 name."));
+ }
+ }
+
+ if (!Network::isEmailDomainAllowed($email)) {
+ throw new Exception(L10n::t('Your email domain is not among those allowed on this site.'));
+ }
+
+ if (!valid_email($email) || !Network::isEmailDomainValid($email)) {
+ throw new Exception(L10n::t('Not a valid email address.'));
+ }
+ if (self::isNicknameBlocked($nickname)) {
+ throw new Exception(L10n::t('The nickname was blocked from registration by the nodes admin.'));
+ }
+
+ if (Config::get('system', 'block_extended_register', false) && dba::exists('user', ['email' => $email])) {
+ throw new Exception(L10n::t('Cannot use that email.'));
+ }
+
+ // Disallow somebody creating an account using openid that uses the admin email address,
+ // since openid bypasses email verification. We'll allow it if there is not yet an admin account.
+ if (x($a->config, 'admin_email') && strlen($openid_url)) {
+ $adminlist = explode(',', str_replace(' ', '', strtolower($a->config['admin_email'])));
+ if (in_array(strtolower($email), $adminlist)) {
+ throw new Exception(L10n::t('Cannot use that email.'));
+ }
+ }
+
+ $nickname = $data['nickname'] = strtolower($nickname);
+
+ if (!preg_match('/^[a-z0-9][a-z0-9\_]*$/', $nickname)) {
+ throw new Exception(L10n::t('Your nickname can only contain a-z, 0-9 and _.'));
+ }
+
+ // Check existing and deleted accounts for this nickname.
+ if (dba::exists('user', ['nickname' => $nickname])
+ || dba::exists('userd', ['username' => $nickname])
+ ) {
+ throw new Exception(L10n::t('Nickname is already registered. Please choose another.'));
+ }
+
+ $new_password = strlen($password) ? $password : User::generateNewPassword();
+ $new_password_encoded = self::hashPassword($new_password);
+
+ $return['password'] = $new_password;
+
+ $keys = Crypto::newKeypair(4096);
+ if ($keys === false) {
+ throw new Exception(L10n::t('SERIOUS ERROR: Generation of security keys failed.'));
+ }
+
+ $prvkey = $keys['prvkey'];
+ $pubkey = $keys['pubkey'];
+
+ // Create another keypair for signing/verifying salmon protocol messages.
+ $sres = Crypto::newKeypair(512);
+ $sprvkey = $sres['prvkey'];
+ $spubkey = $sres['pubkey'];
+
+ $insert_result = dba::insert('user', [
+ 'guid' => generate_user_guid(),
+ 'username' => $username,
+ 'password' => $new_password_encoded,
+ 'email' => $email,
+ 'openid' => $openid_url,
+ 'nickname' => $nickname,
+ 'pubkey' => $pubkey,
+ 'prvkey' => $prvkey,
+ 'spubkey' => $spubkey,
+ 'sprvkey' => $sprvkey,
+ 'verified' => $verified,
+ 'blocked' => $blocked,
+ 'language' => $language,
+ 'timezone' => 'UTC',
+ 'register_date' => DateTimeFormat::utcNow(),
+ 'default-location' => ''
+ ]);
+
+ if ($insert_result) {
+ $uid = dba::lastInsertId();
+ $user = dba::selectFirst('user', [], ['uid' => $uid]);
+ } else {
+ throw new Exception(L10n::t('An error occurred during registration. Please try again.'));
+ }
+
+ if (!$uid) {
+ throw new Exception(L10n::t('An error occurred during registration. Please try again.'));
+ }
+
+ // if somebody clicked submit twice very quickly, they could end up with two accounts
+ // due to race condition. Remove this one.
+ $user_count = dba::count('user', ['nickname' => $nickname]);
+ if ($user_count > 1) {
+ dba::delete('user', ['uid' => $uid]);
+
+ throw new Exception(L10n::t('Nickname is already registered. Please choose another.'));
+ }
+
+ $insert_result = dba::insert('profile', [
+ 'uid' => $uid,
+ 'name' => $username,
+ 'photo' => System::baseUrl() . "/photo/profile/{$uid}.jpg",
+ 'thumb' => System::baseUrl() . "/photo/avatar/{$uid}.jpg",
+ 'publish' => $publish,
+ 'is-default' => 1,
+ 'net-publish' => $netpublish,
+ 'profile-name' => L10n::t('default')
+ ]);
+ if (!$insert_result) {
+ dba::delete('user', ['uid' => $uid]);
+
+ throw new Exception(L10n::t('An error occurred creating your default profile. Please try again.'));
+ }
+
+ // Create the self contact
+ if (!Contact::createSelfFromUserId($uid)) {
+ dba::delete('user', ['uid' => $uid]);
+
+ throw new Exception(L10n::t('An error occurred creating your self contact. Please try again.'));
+ }
+
+ // Create a group with no members. This allows somebody to use it
+ // right away as a default group for new contacts.
+ $def_gid = Group::create($uid, L10n::t('Friends'));
+ if (!$def_gid) {
+ dba::delete('user', ['uid' => $uid]);
+
+ throw new Exception(L10n::t('An error occurred creating your default contact group. Please try again.'));
+ }
+
+ $fields = ['def_gid' => $def_gid];
+ if (Config::get('system', 'newuser_private') && $def_gid) {
+ $fields['allow_gid'] = '<' . $def_gid . '>';
+ }
+
+ dba::update('user', $fields, ['uid' => $uid]);
+
+ // if we have no OpenID photo try to look up an avatar
+ if (!strlen($photo)) {
+ $photo = Network::lookupAvatarByEmail($email);
+ }
+
+ // unless there is no avatar-addon loaded
+ if (strlen($photo)) {
+ $photo_failure = false;
+
+ $filename = basename($photo);
+ $img_str = Network::fetchUrl($photo, true);
+ // guess mimetype from headers or filename
+ $type = Image::guessType($photo, true);
+
+ $Image = new Image($img_str, $type);
+ if ($Image->isValid()) {
+ $Image->scaleToSquare(175);
+
+ $hash = Photo::newResource();
+
+ $r = Photo::store($Image, $uid, 0, $hash, $filename, L10n::t('Profile Photos'), 4);
+
+ if ($r === false) {
+ $photo_failure = true;
+ }
+
+ $Image->scaleDown(80);
+
+ $r = Photo::store($Image, $uid, 0, $hash, $filename, L10n::t('Profile Photos'), 5);
+
+ if ($r === false) {
+ $photo_failure = true;
+ }
+
+ $Image->scaleDown(48);
+
+ $r = Photo::store($Image, $uid, 0, $hash, $filename, L10n::t('Profile Photos'), 6);
+
+ if ($r === false) {
+ $photo_failure = true;
+ }
+
+ if (!$photo_failure) {
+ dba::update('photo', ['profile' => 1], ['resource-id' => $hash]);
+ }
+ }
+ }
+
+ Addon::callHooks('register_account', $uid);
+
+ $return['user'] = $user;
+ return $return;
+ }
+
+ /**
+ * @brief Sends pending registration confiŕmation email
+ *
+ * @param string $email
+ * @param string $sitename
+ * @param string $username
+ * @return NULL|boolean from notification() and email() inherited
+ */
+ public static function sendRegisterPendingEmail($email, $sitename, $username)
+ {
+ $body = deindent(L10n::t('
+ Dear %1$s,
+ Thank you for registering at %2$s. Your account is pending for approval by the administrator.
+ '));
+
+ $body = sprintf($body, $username, $sitename);
+
+ return notification([
+ 'type' => SYSTEM_EMAIL,
+ 'to_email' => $email,
+ 'subject'=> L10n::t('Registration at %s', $sitename),
+ 'body' => $body]);
+ }
+
+ /**
+ * @brief Sends registration confirmation
+ *
+ * It's here as a function because the mail is sent from different parts
+ *
+ * @param string $email
+ * @param string $sitename
+ * @param string $siteurl
+ * @param string $username
+ * @param string $password
+ * @return NULL|boolean from notification() and email() inherited
+ */
+ public static function sendRegisterOpenEmail($email, $sitename, $siteurl, $username, $password)
+ {
+ $preamble = deindent(L10n::t('
+ Dear %1$s,
+ Thank you for registering at %2$s. Your account has been created.
+ '));
+ $body = deindent(L10n::t('
+ The login details are as follows:
+
+ Site Location: %3$s
+ Login Name: %1$s
+ Password: %5$s
+
+ You may change your password from your account "Settings" page after logging
+ in.
+
+ Please take a few moments to review the other account settings on that page.
+
+ You may also wish to add some basic information to your default profile
+ ' . "\x28" . 'on the "Profiles" page' . "\x29" . ' so that other people can easily find you.
+
+ We recommend setting your full name, adding a profile photo,
+ adding some profile "keywords" ' . "\x28" . 'very useful in making new friends' . "\x29" . ' - and
+ perhaps what country you live in; if you do not wish to be more specific
+ than that.
+
+ We fully respect your right to privacy, and none of these items are necessary.
+ If you are new and do not know anybody here, they may help
+ you to make some new and interesting friends.
+
+ If you ever want to delete your account, you can do so at %3$s/removeme
+
+ Thank you and welcome to %2$s.'));
+
+ $preamble = sprintf($preamble, $username, $sitename);
+ $body = sprintf($body, $email, $sitename, $siteurl, $username, $password);
- return $user['uid'];
+ return notification([
+ 'type' => SYSTEM_EMAIL,
+ 'to_email' => $email,
+ 'subject'=> L10n::t('Registration details for %s', $sitename),
+ 'preamble'=> $preamble,
+ 'body' => $body]);
}
/**
logger('Removing user: ' . $uid);
- $user = dba::select('user', [], ['uid' => $uid], ['limit' => 1]);
+ $user = dba::selectFirst('user', [], ['uid' => $uid]);
- call_hooks('remove_user', $user);
+ Addon::callHooks('remove_user', $user);
// save username (actually the nickname as it is guaranteed
// unique), so it cannot be re-registered in the future.
dba::insert('userd', ['username' => $user['nickname']]);
// The user and related data will be deleted in "cron_expire_and_remove_users" (cronjobs.php)
- dba::update('user', ['account_removed' => true, 'account_expires_on' => datetime_convert()], ['uid' => $uid]);
+ dba::update('user', ['account_removed' => true, 'account_expires_on' => DateTimeFormat::utcNow()], ['uid' => $uid]);
Worker::add(PRIORITY_HIGH, "Notifier", "removeme", $uid);
// Send an update to the directory
projects / friendica.git / blobdiff