.
// validate a user's credentials, and log them in by sending a cookie.
// This handles several cases:
//
// 1) login via web form w/ email addr and password
// 2) login via web form w/ authenticator
// 3) login via a URL sent in email (e.g. to reset password)
require_once("../inc/boinc_db.inc");
require_once("../inc/util.inc");
require_once("../inc/email.inc");
require_once("../inc/user.inc");
require_once("../inc/ldap.inc");
require_once("../inc/user_util.inc");
require_once("../inc/password_compat/password.inc");
check_get_args(array("id", "t", "h", "key"));
// login with email addr / passwd
//
function login_with_email($email_addr, $passwd, $next_url, $perm) {
$user = BoincUser::lookup_email_addr($email_addr);
if (!$user) {
sleep(LOGIN_FAIL_SLEEP_SEC);
page_head("No such account");
echo "No account with email address $email_addr exists.
Please go back and try again.
";
page_tail();
exit;
}
if (substr($user->authenticator, 0, 1) == 'x'){
sleep(LOGIN_FAIL_SLEEP_SEC);
error_page("This account has been administratively disabled.");
}
// allow authenticator as password
//
if ($passwd != $user->authenticator) {
$passwd_hash = md5($passwd.$email_addr);
if (!check_passwd_hash($user, $passwd_hash)) {
sleep(LOGIN_FAIL_SLEEP_SEC);
page_head("Password incorrect");
echo "The password you entered is incorrect. Please go back and try again.\n";
page_tail();
exit;
}
}
// Intercept next_url if consent has not yet been given
//
$next_url = intercept_login($user, $perm, $next_url);
Header("Location: ".url_base()."$next_url");
}
// email link case
//
function login_via_link($id, $t, $h) {
$user = BoincUser::lookup_id($id);
if (!$user) {
sleep(LOGIN_FAIL_SLEEP_SEC);
error_page("Invalid user ID.
Please make sure you visited the complete URL;
it may have been split across lines by your email reader."
);
}
$x = $id.$user->authenticator.$t;
$x = md5($x);
$x = substr($x, 0, 16);
if ($x != $h) {
sleep(LOGIN_FAIL_SLEEP_SEC);
error_page("Invalid authenticator.
Please make sure you visited the complete URL;
it may have been split across lines by your email reader."
);
}
if (time() - $t > 86400) {
sleep(LOGIN_FAIL_SLEEP_SEC);
error_page("Link has expired;
go here to
get a new login link by email."
);
}
// Intercept next_url if consent has not yet been given
//
$next_url = intercept_login($user, true, USER_HOME);
Header("Location: ".url_base()."$next_url");
}
function login_with_auth($authenticator, $next_url, $perm) {
$user = BoincUser::lookup_auth($authenticator);
if (!$user) {
sleep(LOGIN_FAIL_SLEEP_SEC);
page_head("Login failed");
echo "There is no account with that authenticator.
Please try again.
";
page_tail();
} else if (substr($user->authenticator, 0, 1) == 'x'){
sleep(LOGIN_FAIL_SLEEP_SEC);
error_page("This account has been administratively disabled.");
} else {
// Intercept next_url if consent has not yet been given
//
$next_url = intercept_login($user, $perm, $next_url);
Header("Location: ".url_base()."$next_url");
}
}
function login_with_ldap($uid, $passwd, $next_url, $perm) {
list ($ldap_user, $error_msg) = ldap_auth($uid, $passwd);
if ($error_msg) {
sleep(LOGIN_FAIL_SLEEP_SEC);
error_page($error_msg);
}
$x = ldap_email_string($uid);
$user = BoincUser::lookup_email_addr($x);
if (!$user) {
// LDAP authentication succeeded but we don't have a user record.
// Create one.
//
$user = make_user_ldap($x, $ldap_user->name);
}
if (!$user) {
error_page("Couldn't create user");
}
// Intercept next_url if consent has not yet been given
//
$next_url = intercept_login($user, $perm, $next_url);
Header("Location: ".url_base()."$next_url");
return;
}
$id = get_int('id', true);
$t = get_int('t', true);
$h = get_str('h', true);
if ($id && $t && $h) {
login_via_link($id, $t, $h);
exit;
}
$next_url = post_str("next_url", true);
$next_url = urldecode($next_url);
$next_url = sanitize_local_url($next_url);
if (strlen($next_url) == 0) {
$next_url = USER_HOME;
}
$perm = false;
if (isset($_POST['stay_logged_in'])) {
$perm = $_POST['stay_logged_in'];
}
// check for account key case.
// see if key is in URL; if not then check for POST data
//
$authenticator = get_str("key", true);
if (!$authenticator) {
$authenticator = post_str("authenticator", true);
}
if ($authenticator) {
login_with_auth($authenticator, $next_url, $perm);
exit;
}
$email_addr = strtolower(sanitize_tags(post_str("email_addr", true)));
$passwd = post_str("passwd", true);
if ($email_addr && $passwd) {
if (LDAP_HOST && !is_valid_email_addr($email_addr)) {
login_with_ldap($email_addr, $passwd, $next_url, $perm);
} else {
login_with_email($email_addr, $passwd, $next_url, $perm);
}
exit;
}
error_page("You must supply an email address and password");
?>