Esempio n. 1
0
function phorum_mod_event_logging_database_error($error)
{
    if (!$GLOBALS["PHORUM"]["mod_event_logging"]["do_log_database_error"]) {
        return $error;
    }
    // Check for suspended logging.
    if (!empty($GLOBALS["PHORUM"]["MOD_EVENT_LOGGING"]["SUSPEND"])) {
        return $error;
    }
    // Prevention against recursive logging calls.
    if (!empty($GLOBALS["PHORUM"]["MOD_EVENT_LOGGING"]["LOOPLOCK"])) {
        return $error;
    }
    $GLOBALS["PHORUM"]["MOD_EVENT_LOGGING"]["LOOPLOCK"]++;
    // Construct a back trace.
    $backtrace = phorum_generate_backtrace(3);
    list($source, $from_module) = event_logging_find_source(4);
    // Log the event.
    event_logging_writelog(array("message" => "Database error: {$error}", "details" => $backtrace === NULL ? NULL : "\nBack trace:\n\n{$backtrace}", "loglevel" => EVENTLOG_LVL_ALERT, "source" => $source, "category" => $from_module ? EVENTLOG_CAT_MODULE : EVENTLOG_CAT_APPLICATION));
    $GLOBALS["PHORUM"]["MOD_EVENT_LOGGING"]["LOOPLOCK"]--;
    return $error;
}
Esempio n. 2
0
/**
 * Database error handling function.
 *
 * @param $error - The error message.
 */
function phorum_database_error($error)
{
    $PHORUM = $GLOBALS["PHORUM"];
    // Flush output that we buffered so far (for displaying a
    // clean page in the admin interface).
    phorum_ob_clean();
    /*
     * [hook]
     *     database_error
     *
     * [description]
     *     Give modules a chance to handle or process database errors.
     *     This can be useful to implement addional logging backends and/or
     *     alerting mechanisms. Another option is to fully override Phorum's
     *     default database error handling by handling the error and then
     *     calling exit() from the hook to prevent the default Phorum code
     *     from running.<sbr/>
     *     <sbr/>
     *     Note: If you decide to use the full override scenario, then
     *     it is best to make your module run the database_error hook
     *     last, so other modules can still run their hook handling
     *     before the script exits. To accomplish this, add this to your
     *     module info:
     *     <programlisting>
     *     priority: run hook database_error after *
     *     </programlisting>
     *
     * [category]
     *     Miscellaneous
     *
     * [when]
     *     At the start of the function
     *     <literal>phorum_database_error</literal> (which you can find in
     *     <filename>common.php</filename>). This function is called from
     *     the database layer when some database error occurs.
     *
     * [input]
     *     The error message that was returned from the database layer.
     *     This error is not HTML escaped, so if you send it to the browser,
     *     be sure to preprocess it using <phpfunc>htmlspecialchars</phpfunc>.
     *
     * [output]
     *     Same as input.
     *
     * [example]
     *     <hookcode>
     *     function phorum_mod_foo_database_error($error)
     *     {
     *         // Log database errors to syslog facility "LOCAL0".
     *         openlog("Phorum", LOG_PID | LOG_PERROR, LOG_LOCAL0);
     *         syslog(LOG_ERR, $error);
     *
     *         return $error;
     *     }
     *     </hookcode>
     */
    if (isset($PHORUM["hooks"]["database_error"])) {
        phorum_hook("database_error", $error);
    }
    // Find out what type of error handling is required.
    $logopt = isset($PHORUM["error_logging"]) ? $PHORUM["error_logging"] : 'screen';
    // Create a backtrace report, so it's easier to find out where a problem
    // is coming from.
    $backtrace = phorum_generate_backtrace(0);
    // Start the error page.
    ?>
    <html>
    <head><title>Phorum database error</title></head>
    <body>
    <h1>Phorum Database Error</h1>

    Sorry, a Phorum database error occurred.<br/>
    <?php 
    // In admin scripts, we will always include the
    // error message inside a comment in the page.
    if (defined("PHORUM_ADMIN")) {
        print "<!-- " . htmlspecialchars($error, ENT_COMPAT, $PHORUM["DATA"]["HCHARSET"]) . " -->";
    }
    switch ($logopt) {
        // Log the database error to a logfile.
        case "file":
            $cache_dir = $PHORUM["cache"];
            $fp = fopen($cache_dir . "/phorum-sql-errors.log", "a");
            fputs($fp, "Time: " . time() . "\n" . "Error: {$error}\n" . ($backtrace !== NULL ? "Back trace:\n{$backtrace}\n\n" : ""));
            fclose($fp);
            print "The error message has been written<br/>" . "to the phorum-sql-errors.log error log.<br/>" . "Please try again later!";
            break;
            // Display the database error on screen.
        // Display the database error on screen.
        case "screen":
            $htmlbacktrace = $backtrace === NULL ? NULL : nl2br(htmlspecialchars($backtrace, ENT_COMPAT, $PHORUM["DATA"]["HCHARSET"]));
            print "Please try again later!" . "<h3>Error:</h3>" . htmlspecialchars($error, ENT_COMPAT, $PHORUM["DATA"]["HCHARSET"]) . ($backtrace !== NULL ? "<h3>Backtrace:</h3>\n{$htmlbacktrace}" : "");
            break;
            // Send a mail to the administrator about the database error.
        // Send a mail to the administrator about the database error.
        case "mail":
        default:
            require_once "./include/email_functions.php";
            $data = array("mailmessage" => "A database error occured in your Phorum installation.\n" . "\n" . "Error message:\n" . "--------------\n" . "\n" . "{$error}\n" . "\n" . ($backtrace !== NULL ? "Backtrace:\n----------\n\n{$backtrace}" : ""), "mailsubject" => "Phorum: A database error occured");
            $adminmail = $PHORUM["system_email_from_address"];
            phorum_email_user(array($adminmail), $data);
            print "The administrator of this forum has been<br/>" . "notified by email about the error.<br/>" . "Please try again later!";
            break;
    }
    // Finish the error page.
    ?>
    </body>
    </html>
    <?php 
    exit;
}