/**
* Default exception handler, uncaught exceptions are equivalent to error() in 1.9 and earlier
*
* @param Exception $ex
* @return void -does not return. Terminates execution!
*/
function default_exception_handler($ex)
{
global $CFG, $DB, $OUTPUT, $USER, $FULLME, $SESSION, $PAGE;
// detect active db transactions, rollback and log as error
abort_all_db_transactions();
if ($ex instanceof required_capability_exception && !CLI_SCRIPT && !AJAX_SCRIPT && !empty($CFG->autologinguests) && !empty($USER->autologinguest)) {
$SESSION->wantsurl = qualified_me();
redirect(get_login_url());
}
$info = get_exception_info($ex);
if (debugging('', DEBUG_MINIMAL)) {
$logerrmsg = "Default exception handler: " . $info->message . ' Debug: ' . $info->debuginfo . "\n" . format_backtrace($info->backtrace, true);
error_log($logerrmsg);
}
if (is_early_init($info->backtrace)) {
echo bootstrap_renderer::early_error($info->message, $info->moreinfourl, $info->link, $info->backtrace, $info->debuginfo, $info->errorcode);
} else {
try {
if ($DB) {
// If you enable db debugging and exception is thrown, the print footer prints a lot of rubbish
$DB->set_debug(0);
}
echo $OUTPUT->fatal_error($info->message, $info->moreinfourl, $info->link, $info->backtrace, $info->debuginfo);
} catch (Exception $out_ex) {
// default exception handler MUST not throw any exceptions!!
// the problem here is we do not know if page already started or not, we only know that somebody messed up in outputlib or theme
// so we just print at least something instead of "Exception thrown without a stack frame in Unknown on line 0":-(
if (CLI_SCRIPT or AJAX_SCRIPT) {
// just ignore the error and send something back using the safest method
echo bootstrap_renderer::early_error($info->message, $info->moreinfourl, $info->link, $info->backtrace, $info->debuginfo, $info->errorcode);
} else {
echo bootstrap_renderer::early_error_content($info->message, $info->moreinfourl, $info->link, $info->backtrace, $info->debuginfo);
$outinfo = get_exception_info($out_ex);
echo bootstrap_renderer::early_error_content($outinfo->message, $outinfo->moreinfourl, $outinfo->link, $outinfo->backtrace, $outinfo->debuginfo);
}
}
}
exit(1);
// General error code
}
$messages = $accessmanager->describe_rules();
if ($quiz->attempts != 1) {
$messages[] = get_string('gradingmethod', 'quiz', quiz_get_grading_option_name($quiz->grademethod));
}
echo $OUTPUT->box_start('quizinfo');
$accessmanager->print_messages($messages);
echo $OUTPUT->box_end();
/// Show number of attempts summary to those who can view reports.
if (has_capability('mod/quiz:viewreports', $context)) {
if ($strattemptnum = quiz_num_attempt_summary($quiz, $cm)) {
echo '<div class="quizattemptcounts"><a href="report.php?mode=overview&id=' . $cm->id . '">' . $strattemptnum . "</a></div>\n";
}
}
/// Guests can't do a quiz, so offer them a choice of logging in or going back.
if (isguestuser()) {
echo $OUTPUT->confirm('<p>' . get_string('guestsno', 'quiz') . "</p>\n\n<p>" . get_string('liketologin') . "</p>\n", get_login_url(), get_referer(false));
echo $OUTPUT->footer();
exit;
}
/// If they are not enrolled in this course in a good enough role, tell them to enrol.
if (!($canattempt || $canpreview || $canreviewmine)) {
echo $OUTPUT->box('<p>' . get_string('youneedtoenrol', 'quiz') . "</p>\n\n<p>" . $OUTPUT->continue_button($CFG->wwwroot . '/course/view.php?id=' . $course->id) . "</p>\n", 'generalbox', 'notice');
echo $OUTPUT->footer();
exit;
}
/// Get this user's attempts.
$attempts = quiz_get_user_attempts($quiz->id, $USER->id);
$lastfinishedattempt = end($attempts);
$unfinished = false;
if ($unfinishedattempt = quiz_get_user_attempt_unfinished($quiz->id, $USER->id)) {
$attempts[] = $unfinishedattempt;
/**
* Processes a user's request to set a new password in the event they forgot the old one.
* If no user identifier has been supplied, it displays a form where they can submit their identifier.
* Where they have supplied identifier, the function will check their status, and send email as appropriate.
*/
function core_login_process_password_reset_request()
{
global $DB, $OUTPUT, $CFG, $PAGE;
$systemcontext = context_system::instance();
$mform = new login_forgot_password_form();
if ($mform->is_cancelled()) {
redirect(get_login_url());
} else {
if ($data = $mform->get_data()) {
// Requesting user has submitted form data.
// Next find the user account in the database which the requesting user claims to own.
if (!empty($data->username)) {
// Username has been specified - load the user record based on that.
$username = core_text::strtolower($data->username);
// Mimic the login page process.
$userparams = array('username' => $username, 'mnethostid' => $CFG->mnet_localhost_id, 'deleted' => 0, 'suspended' => 0);
$user = $DB->get_record('user', $userparams);
} else {
// Try to load the user record based on email address.
// this is tricky because
// 1/ the email is not guaranteed to be unique - TODO: send email with all usernames to select the account for pw reset
// 2/ mailbox may be case sensitive, the email domain is case insensitive - let's pretend it is all case-insensitive.
$select = $DB->sql_like('email', ':email', false, true, false, '|') . " AND mnethostid = :mnethostid AND deleted=0 AND suspended=0";
$params = array('email' => $DB->sql_like_escape($data->email, '|'), 'mnethostid' => $CFG->mnet_localhost_id);
$user = $DB->get_record_select('user', $select, $params, '*', IGNORE_MULTIPLE);
}
// Target user details have now been identified, or we know that there is no such account.
// Send email address to account's email address if appropriate.
$pwresetstatus = PWRESET_STATUS_NOEMAILSENT;
if ($user and !empty($user->confirmed)) {
$userauth = get_auth_plugin($user->auth);
if (!$userauth->can_reset_password() or !is_enabled_auth($user->auth) or !has_capability('moodle/user:changeownpassword', $systemcontext, $user->id)) {
if (send_password_change_info($user)) {
$pwresetstatus = PWRESET_STATUS_OTHEREMAILSENT;
} else {
print_error('cannotmailconfirm');
}
} else {
// The account the requesting user claims to be is entitled to change their password.
// Next, check if they have an existing password reset in progress.
$resetinprogress = $DB->get_record('user_password_resets', array('userid' => $user->id));
if (empty($resetinprogress)) {
// Completely new reset request - common case.
$resetrecord = core_login_generate_password_reset($user);
$sendemail = true;
} else {
if ($resetinprogress->timerequested < time() - $CFG->pwresettime) {
// Preexisting, but expired request - delete old record & create new one.
// Uncommon case - expired requests are cleaned up by cron.
$DB->delete_records('user_password_resets', array('id' => $resetinprogress->id));
$resetrecord = core_login_generate_password_reset($user);
$sendemail = true;
} else {
if (empty($resetinprogress->timererequested)) {
// Preexisting, valid request. This is the first time user has re-requested the reset.
// Re-sending the same email once can actually help in certain circumstances
// eg by reducing the delay caused by greylisting.
$resetinprogress->timererequested = time();
$DB->update_record('user_password_resets', $resetinprogress);
$resetrecord = $resetinprogress;
$sendemail = true;
} else {
// Preexisting, valid request. User has already re-requested email.
$pwresetstatus = PWRESET_STATUS_ALREADYSENT;
$sendemail = false;
}
}
}
if ($sendemail) {
$sendresult = send_password_change_confirmation_email($user, $resetrecord);
if ($sendresult) {
$pwresetstatus = PWRESET_STATUS_TOKENSENT;
} else {
print_error('cannotmailconfirm');
}
}
}
}
// Any email has now been sent.
// Next display results to requesting user if settings permit.
echo $OUTPUT->header();
if (!empty($CFG->protectusernames)) {
// Neither confirm, nor deny existance of any username or email address in database.
// Print general (non-commital) message.
notice(get_string('emailpasswordconfirmmaybesent'), $CFG->wwwroot . '/index.php');
die;
// Never reached.
} else {
if (empty($user)) {
// Protect usernames is off, and we couldn't find the user with details specified.
// Print failure advice.
notice(get_string('emailpasswordconfirmnotsent'), $CFG->wwwroot . '/forgot_password.php');
die;
// Never reached.
} else {
//.........这里部分代码省略.........
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