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@@ -27,12 +27,16 @@ if (!defined('SMF'))
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*/
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function DumpDatabase2()
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{
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- global $db_name, $scripturl, $context, $modSettings, $crlf, $smcFunc, $db_prefix;
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+ global $db_name, $scripturl, $context, $modSettings, $crlf, $smcFunc, $db_prefix, $db_show_debug;
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// Administrators only!
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if (!allowedTo('admin_forum'))
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fatal_lang_error('no_dump_database', 'critical');
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+ // We don't need debug when dumping the database
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+ $modSettings['disableQueryCheck'] = true;
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+ $db_show_debug = false;
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+
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// You can't dump nothing!
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if (!isset($_REQUEST['struct']) && !isset($_REQUEST['data']))
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$_REQUEST['data'] = true;
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@@ -44,22 +48,22 @@ function DumpDatabase2()
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// Attempt to stop from dying...
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@set_time_limit(600);
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+ $time_limit = ini_get('max_execution_time');
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+ $start_time = time();
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// @todo ... fail on not getting the requested memory?
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setMemoryLimit('256M');
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+ $memory_limit = memoryReturnBytes(ini_get('memory_limit')) / 4;
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+ $current_used_memory = 0;
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+ $db_backup = '';
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+ $output_function = 'un_compressed';
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+
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+ @ob_end_clean();
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// Start saving the output... (don't do it otherwise for memory reasons.)
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if (isset($_REQUEST['compress']) && function_exists('gzencode'))
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{
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- // Make sure we're gzipping output, but then say we're not in the header ^_^.
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- if (empty($modSettings['enableCompressedOutput']))
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- @ob_start('ob_gzhandler', 65536);
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- // Try to clean any data already outputted.
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- elseif (ob_get_length() != 0)
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- {
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- ob_end_clean();
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- @ob_start('ob_gzhandler', 65536);
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- }
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+ $output_function = 'gzencode';
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// Send faked headers so it will just save the compressed output as a gzip.
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header('Content-Type: application/x-gzip');
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@@ -109,13 +113,13 @@ function DumpDatabase2()
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$crlf = "\r\n";
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// SQL Dump Header.
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- echo
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- '-- ==========================================================', $crlf,
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- '--', $crlf,
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- '-- Database dump of tables in `', $db_name, '`', $crlf,
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- '-- ', timeformat(time(), false), $crlf,
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- '--', $crlf,
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- '-- ==========================================================', $crlf,
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+ $db_chunks =
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+ '-- ==========================================================' . $crlf .
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+ '--' . $crlf .
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+ '-- Database dump of tables in `' . $db_name . '`' . $crlf .
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+ '-- ' . timeformat(time(), false) . $crlf .
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+ '--' . $crlf .
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+ '-- ==========================================================' . $crlf .
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$crlf;
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// Get all tables in the database....
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@@ -134,49 +138,94 @@ function DumpDatabase2()
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$tables = $smcFunc['db_list_tables'](false, $db_prefix . '%');
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foreach ($tables as $tableName)
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{
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- if (function_exists('apache_reset_timeout'))
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- @apache_reset_timeout();
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-
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// Are we dumping the structures?
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if (isset($_REQUEST['struct']))
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{
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- echo
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- $crlf,
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- '--', $crlf,
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- '-- Table structure for table `', $tableName, '`', $crlf,
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- '--', $crlf,
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- $crlf,
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- $smcFunc['db_table_sql']($tableName), ';', $crlf;
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+ $db_chunks .=
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+ $crlf .
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+ '--' . $crlf .
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+ '-- Table structure for table `' . $tableName . '`' . $crlf .
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+ '--' . $crlf .
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+ $crlf .
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+ $smcFunc['db_table_sql']($tableName) . ';' . $crlf;
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}
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+ else
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+ // This is needed to speedup things later
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+ $smcFunc['db_table_sql']($tableName);
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// How about the data?
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if (!isset($_REQUEST['data']) || substr($tableName, -10) == 'log_errors')
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continue;
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+ $first_round = true;
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+ $close_table = false;
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+
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// Are there any rows in this table?
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- $get_rows = $smcFunc['db_insert_sql']($tableName);
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+ while ($get_rows = $smcFunc['db_insert_sql']($tableName, $first_round))
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+ {
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+ if (empty($get_rows))
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+ break;
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+
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+ // Time is what we need here!
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+ if (function_exists('apache_reset_timeout'))
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+ @apache_reset_timeout();
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+ elseif (!empty($time_limit) && ($start_time + $time_limit - 20 > time()))
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+ {
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+ $start_time = time();
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+ @set_time_limit(150);
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+ }
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+
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+ if ($first_round)
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+ {
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+ $db_chunks .=
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+ $crlf .
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+ '--' . $crlf .
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+ '-- Dumping data in `' . $tableName . '`' . $crlf .
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+ '--' . $crlf .
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+ $crlf;
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+ $first_round = false;
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+ }
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+ $db_chunks .=
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+ $get_rows;
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+ $current_used_memory += $smcFunc['strlen']($db_chunks);
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+
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+ $db_backup .= $db_chunks;
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+ unset($db_chunks);
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+ $db_chunks = '';
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+ if ($current_used_memory > $memory_limit)
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+ {
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+ echo $output_function($db_backup);
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+ $current_used_memory = 0;
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+ // This is probably redundant
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+ unset($db_backup);
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+ $db_backup = '';
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+ }
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+ $close_table = true;
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+ }
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// No rows to get - skip it.
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- if (empty($get_rows))
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- continue;
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-
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- echo
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- $crlf,
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- '--', $crlf,
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- '-- Dumping data in `', $tableName, '`', $crlf,
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- '--', $crlf,
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- $crlf,
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- $get_rows,
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- '-- --------------------------------------------------------', $crlf;
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-
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- unset($get_rows);
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+ if ($close_table)
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+ $db_backup .=
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+ '-- --------------------------------------------------------' . $crlf;
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}
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- echo
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- $crlf,
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- '-- Done', $crlf;
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+ $db_backup .=
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+ $crlf .
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+ '-- Done' . $crlf;
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+
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+ echo $output_function($db_backup);
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exit;
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}
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+/**
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+ * Dummy/helper function, it simply returns the string passed as argument
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+ * @param $string, a string
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+ * @return the string passed
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+ */
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+function un_compressed($string = '')
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+{
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+ return $string;
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+}
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+
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?>
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emanuele