+ − <?php
+ −
+ − /*
+ − * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
+ − * Copyright (C) 2006-2009 Dan Fuhry
+ − * Installation package
+ − * libenanoinstall.php - Installation payload backend
+ − *
+ − * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
+ − * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
+ − *
+ − * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
+ − * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
+ − */
+ −
+ − $neutral_color = 'C';
+ −
+ − function run_installer_stage($stage_id, $stage_name, $function, $failure_explanation, $allow_skip = true)
+ − {
+ − static $resumed = false;
+ − static $resume_stack = array();
+ −
+ − if ( empty($resume_stack) && isset($_POST['resume_stack']) && preg_match('/[a-z_]+((\|[a-z_]+)+)/', $_POST['resume_stack']) )
+ − {
+ − $resume_stack = explode('|', $_POST['resume_stack']);
+ − }
+ −
+ − $already_run = false;
+ − if ( in_array($stage_id, $resume_stack) )
+ − {
+ − $already_run = true;
+ − }
+ −
+ − if ( !$resumed )
+ − {
+ − if ( !isset($_GET['sub']) )
+ − $resumed = true;
+ − if ( isset($_GET['sub']) && $_GET['sub'] == $stage_id )
+ − {
+ − $resumed = true;
+ − }
+ − }
+ − if ( !$resumed && $allow_skip )
+ − {
+ − echo_stage_success($stage_id, $stage_name);
+ − return false;
+ − }
+ − if ( !function_exists($function) )
+ − die('libenanoinstall: CRITICAL: function "' . $function . '" for ' . $stage_id . ' doesn\'t exist');
+ − $result = call_user_func($function, false, $already_run);
+ − if ( $result )
+ − {
+ − echo_stage_success($stage_id, $stage_name);
+ − $resume_stack[] = $stage_id;
+ − return true;
+ − }
+ − else
+ − {
+ − echo_stage_failure($stage_id, $stage_name, $failure_explanation, $resume_stack);
+ − return false;
+ − }
+ − }
+ −
+ − function start_install_table()
+ − {
+ − echo '<table border="0" cellspacing="0" cellpadding="0" style="margin-top: 10px;">' . "\n";
+ − }
+ −
+ − function close_install_table()
+ − {
+ − echo '</table>' . "\n\n";
+ − flush();
+ − }
+ −
+ − function echo_stage_success($stage_id, $stage_name)
+ − {
+ − global $neutral_color;
+ − $neutral_color = ( $neutral_color == 'A' ) ? 'C' : 'A';
+ − echo '<tr><td style="width: 500px; background-color: #' . "{$neutral_color}{$neutral_color}FF{$neutral_color}{$neutral_color}" . '; padding: 0 5px;">' . htmlspecialchars($stage_name) . '</td><td style="padding: 0 5px;"><img alt="Done" src="../images/check.png" /></td></tr>' . "\n";
+ − flush();
+ − }
+ −
+ − function echo_stage_failure($stage_id, $stage_name, $failure_explanation, $resume_stack)
+ − {
+ − global $neutral_color;
+ − global $lang;
+ −
+ − $neutral_color = ( $neutral_color == 'A' ) ? 'C' : 'A';
+ − echo '<tr><td style="width: 500px; background-color: #' . "FF{$neutral_color}{$neutral_color}{$neutral_color}{$neutral_color}" . '; padding: 0 5px;">' . htmlspecialchars($stage_name) . '</td><td style="padding: 0 5px;"><img alt="Failed" src="../images/checkbad.png" /></td></tr>' . "\n";
+ − flush();
+ − close_install_table();
+ − $post_data = '';
+ − $mysql_error = mysql_error();
+ − $file = ( defined('IN_ENANO_UPGRADE') ) ? 'upgrade.php' : 'install.php';
+ − foreach ( $_POST as $key => $value )
+ − {
+ − // FIXME: These should really also be sanitized for double quotes
+ − $value = htmlspecialchars($value);
+ − $key = htmlspecialchars($key);
+ − $post_data .= " <input type=\"hidden\" name=\"$key\" value=\"$value\" />\n";
+ − }
+ − if ( $stage_id == 'renameconfig' )
+ − echo '<p>' . $failure_explanation . '</p>';
+ − else
+ − echo '<form action="' . $file . '?stage=install&sub=' . $stage_id . '" method="post">
+ − ' . $post_data . '
+ − <input type="hidden" name="resume_stack" value="' . htmlspecialchars(implode('|', $resume_stack)) . '" />
+ − <h3>' . $lang->get('meta_msg_err_stagefailed_title') . '</h3>
+ − <p>' . $failure_explanation . '</p>
+ − ' . ( !empty($mysql_error) ? "<p>" . $lang->get('meta_msg_err_stagefailed_mysqlerror') . " $mysql_error</p>" : '' ) . '
+ − <p>' . $lang->get('meta_msg_err_stagefailed_body') . '</p>
+ − <p style="text-align: center;"><input type="submit" value="' . $lang->get('meta_btn_retry_installation') . '" /></p>
+ − </form>';
+ − global $ui;
+ − $ui->show_footer();
+ − exit;
+ − }
+ −
+ − function enano_perform_upgrade($target_branch)
+ − {
+ − global $db, $session, $paths, $template, $plugins; // Common objects
+ − // Import version info
+ − global $enano_versions;
+ − // Import UI functions
+ − global $ui;
+ − // This is needed for upgrade abstraction
+ − global $dbdriver;
+ −
+ − // see if we're actually supposed to be in post-upgrade
+ − if ( getConfig('enano_version') == 'upg-' . installer_enano_version() )
+ − {
+ − // yep, fall out here to avoid errors
+ − return true;
+ − }
+ −
+ − // Main upgrade stage
+ −
+ − // Init vars
+ − list($major_version, $minor_version) = explode('.', installer_enano_version());
+ − $installer_branch = "$major_version.$minor_version";
+ − $installer_branch = preg_replace('/^upg-/', '', $installer_branch);
+ − $target_branch = preg_replace('/^upg-/', '', $target_branch);
+ −
+ − $version_flipped = array_flip($enano_versions[$target_branch]);
+ − $version_curr = enano_version();
+ − // Change this to be the last version in the current branch.
+ − // If we're just upgrading within this branch, use the version the installer library
+ − // reports to us. Else, use the latest in the old (current target) branch.
+ − // $version_target = installer_enano_version();
+ − $version_target = ( $target_branch === $installer_branch ) ? installer_enano_version() : $enano_versions[$target_branch][ count($enano_versions[$target_branch]) - 1 ];
+ −
+ − // Calculate which scripts to run
+ − if ( !isset($version_flipped[$version_curr]) )
+ − {
+ − echo '<p>ERROR: Unsupported version</p>';
+ − $ui->show_footer();
+ − exit;
+ − }
+ − if ( !isset($version_flipped[$version_target]) )
+ − {
+ − echo '<p>ERROR: Upgrader doesn\'t support its own version</p>';
+ − $ui->show_footer();
+ − exit;
+ − }
+ − $upg_queue = array();
+ − for ( $i = $version_flipped[$version_curr]; $i < $version_flipped[$version_target]; $i++ )
+ − {
+ − if ( !isset($enano_versions[$target_branch][$i + 1]) )
+ − {
+ − echo '<p>ERROR: Unsupported intermediate version</p>';
+ − $ui->show_footer();
+ − exit;
+ − }
+ − $ver_this = $enano_versions[$target_branch][$i];
+ − $ver_next = $enano_versions[$target_branch][$i + 1];
+ − $upg_queue[] = array($ver_this, $ver_next);
+ − }
+ −
+ − // Verify that all upgrade scripts are usable
+ − foreach ( $upg_queue as $verset )
+ − {
+ − $file = ENANO_ROOT . "/install/schemas/upgrade/{$verset[0]}-{$verset[1]}-$dbdriver.sql";
+ − if ( !file_exists($file) )
+ − {
+ − echo "<p>ERROR: Couldn't find required schema file: $file</p>";
+ − $ui->show_footer();
+ − exit;
+ − }
+ − }
+ − // Perform upgrade
+ − foreach ( $upg_queue as $verset )
+ − {
+ − $file = ENANO_ROOT . "/install/schemas/upgrade/{$verset[0]}-{$verset[1]}-$dbdriver.sql";
+ − try
+ − {
+ − $parser = new SQL_Parser($file);
+ − }
+ − catch(Exception $e)
+ − {
+ − die("<pre>$e</pre>");
+ − }
+ −
+ − $parser->assign_vars(array(
+ − 'TABLE_PREFIX' => table_prefix
+ − ));
+ −
+ − $sql_list = $parser->parse();
+ − // Check for empty schema file
+ − if ( $sql_list[0] === ';' && count($sql_list) == 1 )
+ − {
+ − // It's empty, report success for this version
+ − // See below for explanation of why setConfig() is called here
+ − setConfig('enano_version', $verset[1]);
+ − continue;
+ − }
+ −
+ − foreach ( $sql_list as $sql )
+ − {
+ − // check for '@' operator on query
+ − if ( substr($sql, 0, 1) == '@' )
+ − {
+ − // Yes - perform query but don't check for errors
+ − $db->sql_query($sql);
+ − }
+ − else
+ − {
+ − // Perform as normal
+ − if ( !$db->sql_query($sql) )
+ − $db->_die();
+ − }
+ − }
+ −
+ − // Is there an additional script (logic) to be run after the schema?
+ − $postscript = ENANO_ROOT . "/install/schemas/upgrade/{$verset[0]}-{$verset[1]}.php";
+ − if ( file_exists($postscript) )
+ − @include($postscript);
+ −
+ − // The advantage of calling setConfig on the system version here?
+ − // Simple. If the upgrade fails, it will pick up from the last
+ − // version, not try to start again from the beginning. This will
+ − // still cause errors in most cases though. Eventually we probably
+ − // need some sort of query-numbering system that tracks in-progress
+ − // upgrades.
+ −
+ − setConfig('enano_version', $verset[1]);
+ − }
+ − }
+ −