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<?php

require_once('include/config.php');
require_once('include/network.php');
require_once('include/plugin.php');
require_once('include/text.php');
require_once('include/pgettext.php');
require_once('include/datetime.php');

function create_user($arr) {

// Required: { username, nickname, email } or { openid_url }

$a = get_app();
$result = array('success' => false, 'user' => null, 'password' => '', 'message' => '');

$using_invites = get_config('system','invitation_only');
$num_invites = get_config('system','number_invites');


$invite_id = ((x($arr,'invite_id')) ? notags(trim($arr['invite_id'])) : '');
$username = ((x($arr,'username')) ? notags(trim($arr['username'])) : '');
$nickname = ((x($arr,'nickname')) ? notags(trim($arr['nickname'])) : '');
$email = ((x($arr,'email')) ? notags(trim($arr['email'])) : '');
$openid_url = ((x($arr,'openid_url')) ? notags(trim($arr['openid_url'])) : '');
$photo = ((x($arr,'photo')) ? notags(trim($arr['photo'])) : '');
$password = ((x($arr,'password')) ? trim($arr['password']) : '');
$blocked = ((x($arr,'blocked')) ? intval($arr['blocked']) : 0);
$verified = ((x($arr,'verified')) ? intval($arr['verified']) : 0);

$publish = ((x($arr,'profile_publish_reg') && intval($arr['profile_publish_reg'])) ? 1 : 0);
$netpublish = ((strlen(get_config('system','directory_submit_url'))) ? $publish : 0);

$tmp_str = $openid_url;

if($using_invites) {
if(! $invite_id) {
$result['message'] .= t('An invitation is required.') . EOL;
return $result;
}
$r = q("select * from register where `hash` = '%s' limit 1", dbesc($invite_id));
if(! results($r)) {
$result['message'] .= t('Invitation could not be verified.') . EOL;
return $result;
}
}

if((! x($username)) || (! x($email)) || (! x($nickname))) {
if($openid_url) {
if(! validate_url($tmp_str)) {
$result['message'] .= t('Invalid OpenID url') . EOL;
return $result;
}
$_SESSION['register'] = 1;
$_SESSION['openid'] = $openid_url;
require_once('library/openid.php');
$openid = new LightOpenID;
$openid->identity = $openid_url;
$openid->returnUrl = $a->get_baseurl() . '/openid';
$openid->required = array('namePerson/friendly', 'contact/email', 'namePerson');
$openid->optional = array('namePerson/first','media/image/aspect11','media/image/default');
goaway($openid->authUrl());
// NOTREACHED
}

notice( t('Please enter the required information.') . EOL );
return;
}

if(! validate_url($tmp_str))
$openid_url = '';


$err = '';

// collapse multiple spaces in name
$username = preg_replace('/ +/',' ',$username);

if(mb_strlen($username) > 48)
$result['message'] .= t('Please use a shorter name.') . EOL;
if(mb_strlen($username) < 3)
$result['message'] .= t('Name too short.') . EOL;

// I don't really like having this rule, but it cuts down
// on the number of auto-registrations by Russian spammers

// Using preg_match was completely unreliable, due to mixed UTF-8 regex support
// $no_utf = get_config('system','no_utf');
// $pat = (($no_utf) ? '/^[a-zA-Z]* [a-zA-Z]*$/' : '/^\p{L}* \p{L}*$/u' );

// So now we are just looking for a space in the full name.

$loose_reg = get_config('system','no_regfullname');
if(! $loose_reg) {
$username = mb_convert_case($username,MB_CASE_TITLE,'UTF-8');
if(! strpos($username,' '))
$result['message'] .= t("That doesn't appear to be your full \x28First Last\x29 name.") . EOL;
}


if(! allowed_email($email))
$result['message'] .= t('Your email domain is not among those allowed on this site.') . EOL;

if((! valid_email($email)) || (! validate_email($email)))
$result['message'] .= t('Not a valid email address.') . EOL;

// 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($a->config,'admin_email')) && (strcasecmp($email,$a->config['admin_email']) == 0) && strlen($openid_url)) {
$r = q("SELECT * FROM `user` WHERE `email` = '%s' LIMIT 1",
dbesc($email)
);
if(count($r))
$result['message'] .= t('Cannot use that email.') . EOL;
}

$nickname = $arr['nickname'] = strtolower($nickname);

if(! preg_match("/^[a-z][a-z0-9\-\_]*$/",$nickname))
$result['message'] .= t('Your "nickname" can only contain "a-z", "0-9", "-", and "_", and must also begin with a letter.') . EOL;
$r = q("SELECT `uid` FROM `user`
WHERE `nickname` = '%s' LIMIT 1",
                dbesc($nickname)
);
if(count($r))
$result['message'] .= t('Nickname is already registered. Please choose another.') . EOL;

// Check deleted accounts that had this nickname. Doesn't matter to us,
// but could be a security issue for federated platforms.

$r = q("SELECT * FROM `userd`
WHERE `username` = '%s' LIMIT 1",
                dbesc($nickname)
);
if(count($r))
$result['message'] .= t('Nickname was once registered here and may not be re-used. Please choose another.') . EOL;

if(strlen($result['message'])) {
return $result;
}

$new_password = ((strlen($password)) ? $password : autoname(6) . mt_rand(100,9999));
$new_password_encoded = hash('whirlpool',$new_password);

$result['password'] = $new_password;

require_once('include/crypto.php');

$keys = new_keypair(4096);

if($keys === false) {
$result['message'] .= t('SERIOUS ERROR: Generation of security keys failed.') . EOL;
return $result;
}

$default_service_class = get_config('system','default_service_class');
if(! $default_service_class)
$default_service_class = '';


$prvkey = $keys['prvkey'];
$pubkey = $keys['pubkey'];

/**
*
* Create another keypair for signing/verifying
* salmon protocol messages. We have to use a slightly
* less robust key because this won't be using openssl
* but the phpseclib. Since it is PHP interpreted code
* it is not nearly as efficient, and the larger keys
* will take several minutes each to process.
*
*/

$sres = new_keypair(512);
$sprvkey = $sres['prvkey'];
$spubkey = $sres['pubkey'];

$r = q("INSERT INTO `user` ( `guid`, `username`, `password`, `email`, `openid`, `nickname`,
`pubkey`, `prvkey`, `spubkey`, `sprvkey`, `register_date`, `verified`, `blocked`, `timezone`, `service_class` )
VALUES ( '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, 'UTC', '%s' )",
dbesc(generate_user_guid()),
dbesc($username),
dbesc($new_password_encoded),
dbesc($email),
dbesc($openid_url),
dbesc($nickname),
dbesc($pubkey),
dbesc($prvkey),
dbesc($spubkey),
dbesc($sprvkey),
dbesc(datetime_convert()),
intval($verified),
intval($blocked),
dbesc($default_service_class)
);

if($r) {
$r = q("SELECT * FROM `user`
WHERE `username` = '%s' AND `password` = '%s' LIMIT 1",
dbesc($username),
dbesc($new_password_encoded)
);
if($r !== false && count($r)) {
$u = $r[0];
$newuid = intval($r[0]['uid']);
}
}
else {
$result['message'] .= t('An error occurred during registration. Please try again.') . EOL ;
return $result;
}

/**
* if somebody clicked submit twice very quickly, they could end up with two accounts
* due to race condition. Remove this one.
*/

$r = q("SELECT `uid` FROM `user`
WHERE `nickname` = '%s' ",
                dbesc($nickname)
);
if((count($r) > 1) && $newuid) {
$result['message'] .= t('Nickname is already registered. Please choose another.') . EOL;
q("DELETE FROM `user` WHERE `uid` = %d LIMIT 1",
intval($newuid)
);
return $result;
}

if(x($newuid) !== false) {
$r = q("INSERT INTO `profile` ( `uid`, `profile-name`, `is-default`, `name`, `photo`, `thumb`, `publish`, `net-publish` )
VALUES ( %d, '%s', %d, '%s', '%s', '%s', %d, %d ) ",
intval($newuid),
t('default'),
1,
dbesc($username),
dbesc($a->get_baseurl() . "/photo/profile/{$newuid}.jpg"),
dbesc($a->get_baseurl() . "/photo/avatar/{$newuid}.jpg"),
intval($publish),
intval($netpublish)

);
if($r === false) {
$result['message'] .= t('An error occurred creating your default profile. Please try again.') . EOL;
// Start fresh next time.
$r = q("DELETE FROM `user` WHERE `uid` = %d",
intval($newuid));
return $result;
}
$r = q("INSERT INTO `contact` ( `uid`, `created`, `self`, `name`, `nick`, `photo`, `thumb`, `micro`, `blocked`, `pending`, `url`, `nurl`,
`request`, `notify`, `poll`, `confirm`, `poco`, `name-date`, `uri-date`, `avatar-date`, `closeness` )
VALUES ( %d, '%s', 1, '%s', '%s', '%s', '%s', '%s', 0, 0, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', 0 ) ",
intval($newuid),
datetime_convert(),
dbesc($username),
dbesc($nickname),
dbesc($a->get_baseurl() . "/photo/profile/{$newuid}.jpg"),
dbesc($a->get_baseurl() . "/photo/avatar/{$newuid}.jpg"),
dbesc($a->get_baseurl() . "/photo/micro/{$newuid}.jpg"),
dbesc($a->get_baseurl() . "/profile/$nickname"),
dbesc(normalise_link($a->get_baseurl() . "/profile/$nickname")),
dbesc($a->get_baseurl() . "/dfrn_request/$nickname"),
dbesc($a->get_baseurl() . "/dfrn_notify/$nickname"),
dbesc($a->get_baseurl() . "/dfrn_poll/$nickname"),
dbesc($a->get_baseurl() . "/dfrn_confirm/$nickname"),
dbesc($a->get_baseurl() . "/poco/$nickname"),
dbesc(datetime_convert()),
dbesc(datetime_convert()),
dbesc(datetime_convert())
);

// Create a group with no members. This allows somebody to use it
// right away as a default group for new contacts.

require_once('include/group.php');
group_add($newuid, t('Friends'));

}

// if we have no OpenID photo try to look up an avatar
if(! strlen($photo))
$photo = avatar_img($email);

// unless there is no avatar-plugin loaded
if(strlen($photo)) {
require_once('include/Photo.php');
$photo_failure = false;

$filename = basename($photo);
$img_str = fetch_url($photo,true);
// guess mimetype from headers or filename
$type = guess_image_type($photo,true);


$img = new Photo($img_str, $type);
if($img->is_valid()) {

$img->scaleImageSquare(175);

$hash = photo_new_resource();

$r = $img->store($newuid, 0, $hash, $filename, t('Profile Photos'), 4 );

if($r === false)
$photo_failure = true;

$img->scaleImage(80);

$r = $img->store($newuid, 0, $hash, $filename, t('Profile Photos'), 5 );

if($r === false)
$photo_failure = true;

$img->scaleImage(48);

$r = $img->store($newuid, 0, $hash, $filename, t('Profile Photos'), 6 );

if($r === false)
$photo_failure = true;

if(! $photo_failure) {
q("UPDATE `photo` SET `profile` = 1 WHERE `resource-id` = '%s' ",
dbesc($hash)
);
}
}
}

call_hooks('register_account', $newuid);

$result['success'] = true;
$result['user'] = $u;
return $result;

}
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