--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/includes/install.inc	Tue Dec 23 14:28:28 2008 +0100
@@ -0,0 +1,736 @@
+<?php
+// $Id: install.inc,v 1.56.2.2 2008/02/11 15:10:26 goba Exp $
+
+define('SCHEMA_UNINSTALLED', -1);
+define('SCHEMA_INSTALLED', 0);
+
+define('REQUIREMENT_INFO', -1);
+define('REQUIREMENT_OK', 0);
+define('REQUIREMENT_WARNING', 1);
+define('REQUIREMENT_ERROR', 2);
+
+define('FILE_EXIST',          1);
+define('FILE_READABLE',       2);
+define('FILE_WRITABLE',       4);
+define('FILE_EXECUTABLE',     8);
+define('FILE_NOT_EXIST',      16);
+define('FILE_NOT_READABLE',   32);
+define('FILE_NOT_WRITABLE',   64);
+define('FILE_NOT_EXECUTABLE', 128);
+
+/**
+ * Initialize the update system by loading all installed module's .install files.
+ */
+function drupal_load_updates() {
+  foreach (drupal_get_installed_schema_version(NULL, FALSE, TRUE) as $module => $schema_version) {
+    if ($schema_version > -1) {
+      module_load_install($module);
+    }
+  }
+}
+
+/**
+ * Returns an array of available schema versions for a module.
+ *
+ * @param $module
+ *   A module name.
+ * @return
+ *   If the module has updates, an array of available updates. Otherwise,
+ *   FALSE.
+ */
+function drupal_get_schema_versions($module) {
+  $updates = array();
+  $functions = get_defined_functions();
+  foreach ($functions['user'] as $function) {
+    if (strpos($function, $module .'_update_') === 0) {
+      $version = substr($function, strlen($module .'_update_'));
+      if (is_numeric($version)) {
+        $updates[] = $version;
+      }
+    }
+  }
+  if (count($updates) == 0) {
+    return FALSE;
+  }
+  return $updates;
+}
+
+/**
+ * Returns the currently installed schema version for a module.
+ *
+ * @param $module
+ *   A module name.
+ * @param $reset
+ *   Set to TRUE after modifying the system table.
+ * @param $array
+ *   Set to TRUE if you want to get information about all modules in the
+ *   system.
+ * @return
+ *   The currently installed schema version.
+ */
+function drupal_get_installed_schema_version($module, $reset = FALSE, $array = FALSE) {
+  static $versions = array();
+
+  if ($reset) {
+    $versions = array();
+  }
+
+  if (!$versions) {
+    $versions = array();
+    $result = db_query("SELECT name, schema_version FROM {system} WHERE type = '%s'", 'module');
+    while ($row = db_fetch_object($result)) {
+      $versions[$row->name] = $row->schema_version;
+    }
+  }
+
+  return $array ? $versions : $versions[$module];
+}
+
+/**
+ * Update the installed version information for a module.
+ *
+ * @param $module
+ *   A module name.
+ * @param $version
+ *   The new schema version.
+ */
+function drupal_set_installed_schema_version($module, $version) {
+  db_query("UPDATE {system} SET schema_version = %d WHERE name = '%s'", $version, $module);
+}
+
+/**
+ * Loads the profile definition, extracting the profile's defined name.
+ *
+ * @return
+ *   The name defined in the profile's _profile_details() hook.
+ */
+function drupal_install_profile_name() {
+  global $profile;
+  static $name = NULL;
+
+  if (!isset($name)) {
+    // Load profile details.
+    $function = $profile .'_profile_details';
+    if (function_exists($function)) {
+      $details = $function();
+    }
+    $name = isset($details['name']) ? $details['name'] : 'Drupal';
+  }
+
+  return $name;
+}
+
+/**
+ * Auto detect the base_url with PHP predefined variables.
+ *
+ * @param $file
+ *   The name of the file calling this function so we can strip it out of
+ *   the URI when generating the base_url.
+ *
+ * @return
+ *   The auto-detected $base_url that should be configured in settings.php
+ */
+function drupal_detect_baseurl($file = 'install.php') {
+  global $profile;
+  $proto = $_SERVER['HTTPS'] ? 'https://' : 'http://';
+  $host = $_SERVER['SERVER_NAME'];
+  $port = ($_SERVER['SERVER_PORT'] == 80 ? '' : ':'. $_SERVER['SERVER_PORT']);
+  $uri = preg_replace("/\?.*/", '', $_SERVER['REQUEST_URI']);
+  $dir = str_replace("/$file", '', $uri);
+
+  return "$proto$host$port$dir";
+}
+
+/**
+ * Detect all databases supported by Drupal that are compiled into the current
+ * PHP installation.
+ *
+ * @return
+ *  An array of database types compiled into PHP.
+ */
+function drupal_detect_database_types() {
+  $databases = array();
+
+  foreach (array('mysql', 'mysqli', 'pgsql') as $type) {
+    if (file_exists('./includes/install.'. $type .'.inc')) {
+      include_once './includes/install.'. $type .'.inc';
+      $function = $type .'_is_available';
+      if ($function()) {
+        $databases[$type] = $type;
+      }
+    }
+  }
+
+  return $databases;
+}
+
+/**
+ * Read settings.php into a buffer line by line, changing values specified in
+ * $settings array, then over-writing the old settings.php file.
+ *
+ * @param $settings
+ *   An array of settings that need to be updated.
+ */
+function drupal_rewrite_settings($settings = array(), $prefix = '') {
+  $default_settings = './sites/default/default.settings.php';
+  $settings_file = './'. conf_path(FALSE, TRUE) .'/'. $prefix .'settings.php';
+
+  // Build list of setting names and insert the values into the global namespace.
+  $keys = array();
+  foreach ($settings as $setting => $data) {
+    $GLOBALS[$setting] = $data['value'];
+    $keys[] = $setting;
+  }
+
+  $buffer = NULL;
+  $first = TRUE;
+  if ($fp = fopen($default_settings, 'r')) {
+    // Step line by line through settings.php.
+    while (!feof($fp)) {
+      $line = fgets($fp);
+      if ($first && substr($line, 0, 5) != '<?php') {
+        $buffer = "<?php\n\n";
+      }
+      $first = FALSE;
+      // Check for constants.
+      if (substr($line, 0, 7) == 'define(') {
+        preg_match('/define\(\s*[\'"]([A-Z_-]+)[\'"]\s*,(.*?)\);/', $line, $variable);
+        if (in_array($variable[1], $keys)) {
+          $setting = $settings[$variable[1]];
+          $buffer .= str_replace($variable[2], " '". $setting['value'] ."'", $line);
+          unset($settings[$variable[1]]);
+          unset($settings[$variable[2]]);
+        }
+        else {
+          $buffer .= $line;
+        }
+      }
+      // Check for variables.
+      elseif (substr($line, 0, 1) == '$') {
+        preg_match('/\$([^ ]*) /', $line, $variable);
+        if (in_array($variable[1], $keys)) {
+          // Write new value to settings.php in the following format:
+          //    $'setting' = 'value'; // 'comment'
+          $setting = $settings[$variable[1]];
+          $buffer .= '$'. $variable[1] ." = '". $setting['value'] ."';". (!empty($setting['comment']) ? ' // '. $setting['comment'] ."\n" : "\n");
+          unset($settings[$variable[1]]);
+        }
+        else {
+          $buffer .= $line;
+        }
+      }
+      else {
+        $buffer .= $line;
+      }
+    }
+    fclose($fp);
+
+    // Add required settings that were missing from settings.php.
+    foreach ($settings as $setting => $data) {
+      if ($data['required']) {
+        $buffer .= "\$$setting = '". $data['value'] ."';\n";
+      }
+    }
+
+    $fp = fopen($settings_file, 'w');
+    if ($fp && fwrite($fp, $buffer) === FALSE) {
+      drupal_set_message(st('Failed to modify %settings, please verify the file permissions.', array('%settings' => $settings_file)), 'error');
+    }
+  }
+  else {
+    drupal_set_message(st('Failed to open %settings, please verify the file permissions.', array('%settings' => $default_settings)), 'error');
+  }
+}
+
+/**
+ * Get list of all .install files.
+ *
+ * @param $module_list
+ *   An array of modules to search for their .install files.
+ */
+function drupal_get_install_files($module_list = array()) {
+  $installs = array();
+  foreach ($module_list as $module) {
+    $installs = array_merge($installs, drupal_system_listing($module .'.install$', 'modules'));
+  }
+  return $installs;
+}
+
+/**
+ * Verify a profile for installation.
+ *
+ * @param profile
+ *   Name of profile to verify.
+ * @param locale
+ *   Name of locale used (if any).
+ * @return
+ *   The list of modules to install.
+ */
+function drupal_verify_profile($profile, $locale) {
+  include_once './includes/file.inc';
+  include_once './includes/common.inc';
+
+  $profile_file = "./profiles/$profile/$profile.profile";
+
+  if (!isset($profile) || !file_exists($profile_file)) {
+    install_no_profile_error();
+  }
+
+  require_once($profile_file);
+
+  // Get a list of modules required by this profile.
+  $function = $profile .'_profile_modules';
+  $module_list = array_merge(drupal_required_modules(), $function(), ($locale != 'en' ? array('locale') : array()));
+
+  // Get a list of modules that exist in Drupal's assorted subdirectories.
+  $present_modules = array();
+  foreach (drupal_system_listing('\.module$', 'modules', 'name', 0) as $present_module) {
+    $present_modules[] = $present_module->name;
+  }
+
+  // Verify that all of the profile's required modules are present.
+  $missing_modules = array_diff($module_list, $present_modules);
+  if (count($missing_modules)) {
+    foreach ($missing_modules as $module) {
+      drupal_set_message(st('The %module module is required but was not found. Please move it into the <em>modules</em> subdirectory.', array('%module' => $module)), 'error');
+    }
+  }
+  else {
+    return $module_list;
+  }
+}
+
+/**
+ * Calls the install function and updates the system table for a given list of
+ * modules.
+ *
+ * @param module_list
+ *   The modules to install.
+ */
+function drupal_install_modules($module_list = array()) {
+  $files = module_rebuild_cache();
+  $module_list = array_flip(array_values($module_list));
+  do {
+    $moved = FALSE;
+    foreach ($module_list as $module => $weight) {
+      $file = $files[$module];
+      if (isset($file->info['dependencies']) && is_array($file->info['dependencies'])) {
+        foreach ($file->info['dependencies'] as $dependency) {
+          if (isset($module_list[$dependency]) && $module_list[$module] < $module_list[$dependency] +1) {
+            $module_list[$module] = $module_list[$dependency] +1;
+            $moved = TRUE;
+          }
+        }
+      }
+    }
+  } while ($moved);
+  asort($module_list);
+  $module_list = array_keys($module_list);
+  array_filter($module_list, '_drupal_install_module');
+  module_enable($module_list);
+}
+
+/**
+ * Callback to install an individual profile module.
+ *
+ * Used during installation to install modules one at a time and then
+ * enable them, or to install a number of modules at one time
+ * from admin/build/modules.
+ */
+function _drupal_install_module($module) {
+  if (drupal_get_installed_schema_version($module, TRUE) == SCHEMA_UNINSTALLED) {
+    module_load_install($module);
+    module_invoke($module, 'install');
+    $versions = drupal_get_schema_versions($module);
+    drupal_set_installed_schema_version($module, $versions ? max($versions) : SCHEMA_INSTALLED);
+    return TRUE;
+  }
+}
+
+/**
+ * Callback to install the system module.
+ *
+ * Separated from the installation of other modules so core system
+ * functions can be made available while other modules are installed.
+ */
+function drupal_install_system() {
+  $system_path = dirname(drupal_get_filename('module', 'system', NULL));
+  require_once './'. $system_path .'/system.install';
+  module_invoke('system', 'install');
+  $system_versions = drupal_get_schema_versions('system');
+  $system_version = $system_versions ? max($system_versions) : SCHEMA_INSTALLED;
+  db_query("INSERT INTO {system} (filename, name, type, owner, status, throttle, bootstrap, schema_version) VALUES('%s', '%s', '%s', '%s', %d, %d, %d, %d)", $system_path .'/system.module', 'system', 'module', '', 1, 0, 0, $system_version);
+  // Now that we've installed things properly, bootstrap the full Drupal environment
+  drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);
+  module_rebuild_cache();
+}
+
+
+/**
+ * Calls the uninstall function and updates the system table for a given module.
+ *
+ * @param $module
+ *   The module to uninstall.
+ */
+function drupal_uninstall_module($module) {
+  // First, retrieve all the module's menu paths from db.
+  drupal_load('module', $module);
+  $paths = module_invoke($module, 'menu');
+
+  // Uninstall the module(s).
+  module_load_install($module);
+  module_invoke($module, 'uninstall');
+
+  // Now remove the menu links for all paths declared by this module.
+  if (!empty($paths)) {
+    $paths = array_keys($paths);
+    // Clean out the names of load functions.
+    foreach ($paths as $index => $path) {
+      $parts = explode('/', $path, MENU_MAX_PARTS);
+      foreach ($parts as $k => $part) {
+        if (preg_match('/^%[a-z_]*$/', $part)) {
+          $parts[$k] = '%';
+        }
+      }
+      $paths[$index] = implode('/', $parts);
+    }
+    $placeholders = implode(', ', array_fill(0, count($paths), "'%s'"));
+
+    $result = db_query('SELECT * FROM {menu_links} WHERE router_path IN ('. $placeholders .') AND external = 0 ORDER BY depth DESC', $paths);
+    // Remove all such items. Starting from those with the greatest depth will
+    // minimize the amount of re-parenting done by menu_link_delete().
+    while ($item = db_fetch_array($result)) {
+      _menu_delete_item($item, TRUE);
+    }
+  }
+
+  drupal_set_installed_schema_version($module, SCHEMA_UNINSTALLED);
+}
+
+/**
+ * Verify the state of the specified file.
+ *
+ * @param $file
+ *   The file to check for.
+ * @param $mask
+ *   An optional bitmask created from various FILE_* constants.
+ * @param $type
+ *   The type of file. Can be file (default), dir, or link.
+ * @return
+ *   TRUE on success or FALSE on failure. A message is set for the latter.
+ */
+function drupal_verify_install_file($file, $mask = NULL, $type = 'file') {
+  $return = TRUE;
+  // Check for files that shouldn't be there.
+  if (isset($mask) && ($mask & FILE_NOT_EXIST) && file_exists($file)) {
+    return FALSE;
+  }
+  // Verify that the file is the type of file it is supposed to be.
+  if (isset($type) && file_exists($file)) {
+    $check = 'is_'. $type;
+    if (!function_exists($check) || !$check($file)) {
+      $return = FALSE;
+    }
+  }
+
+  // Verify file permissions.
+  if (isset($mask)) {
+    $masks = array(FILE_EXIST, FILE_READABLE, FILE_WRITABLE, FILE_EXECUTABLE, FILE_NOT_READABLE, FILE_NOT_WRITABLE, FILE_NOT_EXECUTABLE);
+    foreach ($masks as $current_mask) {
+      if ($mask & $current_mask) {
+        switch ($current_mask) {
+          case FILE_EXIST:
+            if (!file_exists($file)) {
+              if ($type == 'dir') {
+                drupal_install_mkdir($file, $mask);
+              }
+              if (!file_exists($file)) {
+                $return = FALSE;
+              }
+            }
+            break;
+          case FILE_READABLE:
+            if (!is_readable($file) && !drupal_install_fix_file($file, $mask)) {
+              $return = FALSE;
+            }
+            break;
+          case FILE_WRITABLE:
+            if (!is_writable($file) && !drupal_install_fix_file($file, $mask)) {
+              $return = FALSE;
+            }
+            break;
+          case FILE_EXECUTABLE:
+            if (!is_executable($file) && !drupal_install_fix_file($file, $mask)) {
+              $return = FALSE;
+            }
+            break;
+          case FILE_NOT_READABLE:
+            if (is_readable($file) && !drupal_install_fix_file($file, $mask)) {
+              $return = FALSE;
+            }
+            break;
+          case FILE_NOT_WRITABLE:
+            if (is_writable($file) && !drupal_install_fix_file($file, $mask)) {
+              $return = FALSE;
+            }
+            break;
+          case FILE_NOT_EXECUTABLE:
+            if (is_executable($file) && !drupal_install_fix_file($file, $mask)) {
+              $return = FALSE;
+            }
+            break;
+        }
+      }
+    }
+  }
+  return $return;
+}
+
+/**
+ * Create a directory with specified permissions.
+ *
+ * @param file
+ *  The name of the directory to create;
+ * @param mask
+ *  The permissions of the directory to create.
+ * @param $message
+ *  (optional) Whether to output messages. Defaults to TRUE.
+ *
+ * @return
+ *  TRUE/FALSE whether or not the directory was successfully created.
+ */
+function drupal_install_mkdir($file, $mask, $message = TRUE) {
+  $mod = 0;
+  $masks = array(FILE_READABLE, FILE_WRITABLE, FILE_EXECUTABLE, FILE_NOT_READABLE, FILE_NOT_WRITABLE, FILE_NOT_EXECUTABLE);
+  foreach ($masks as $m) {
+    if ($mask & $m) {
+      switch ($m) {
+        case FILE_READABLE:
+          $mod += 444;
+          break;
+        case FILE_WRITABLE:
+          $mod += 222;
+          break;
+        case FILE_EXECUTABLE:
+          $mod += 111;
+          break;
+      }
+    }
+  }
+
+  if (@mkdir($file, intval("0$mod", 8))) {
+    return TRUE;
+  }
+  else {
+    return FALSE;
+  }
+}
+
+/**
+ * Attempt to fix file permissions.
+ *
+ * The general approach here is that, because we do not know the security
+ * setup of the webserver, we apply our permission changes to all three
+ * digits of the file permission (i.e. user, group and all).
+ *
+ * To ensure that the values behave as expected (and numbers don't carry
+ * from one digit to the next) we do the calculation on the octal value
+ * using bitwise operations. This lets us remove, for example, 0222 from
+ * 0700 and get the correct value of 0500.
+ *
+ * @param $file
+ *  The name of the file with permissions to fix.
+ * @param $mask
+ *  The desired permissions for the file.
+ * @param $message
+ *  (optional) Whether to output messages. Defaults to TRUE.
+ *
+ * @return
+ *  TRUE/FALSE whether or not we were able to fix the file's permissions.
+ */
+function drupal_install_fix_file($file, $mask, $message = TRUE) {
+  $mod = fileperms($file) & 0777;
+  $masks = array(FILE_READABLE, FILE_WRITABLE, FILE_EXECUTABLE, FILE_NOT_READABLE, FILE_NOT_WRITABLE, FILE_NOT_EXECUTABLE);
+
+  // FILE_READABLE, FILE_WRITABLE, and FILE_EXECUTABLE permission strings
+  // can theoretically be 0400, 0200, and 0100 respectively, but to be safe
+  // we set all three access types in case the administrator intends to
+  // change the owner of settings.php after installation.
+  foreach ($masks as $m) {
+    if ($mask & $m) {
+      switch ($m) {
+        case FILE_READABLE:
+          if (!is_readable($file)) {
+            $mod |= 0444;
+          }
+          break;
+        case FILE_WRITABLE:
+          if (!is_writable($file)) {
+            $mod |= 0222;
+          }
+          break;
+        case FILE_EXECUTABLE:
+          if (!is_executable($file)) {
+            $mod |= 0111;
+          }
+          break;
+        case FILE_NOT_READABLE:
+          if (is_readable($file)) {
+            $mod &= ~0444;
+          }
+          break;
+        case FILE_NOT_WRITABLE:
+          if (is_writable($file)) {
+            $mod &= ~0222;
+          }
+          break;
+        case FILE_NOT_EXECUTABLE:
+          if (is_executable($file)) {
+            $mod &= ~0111;
+          }
+          break;
+      }
+    }
+  }
+
+  // chmod() will work if the web server is running as owner of the file.
+  // If PHP safe_mode is enabled the currently executing script must also
+  // have the same owner.
+  if (@chmod($file, $mod)) {
+    return TRUE;
+  }
+  else {
+    return FALSE;
+  }
+}
+
+
+/**
+ * Send the user to a different installer page. This issues an on-site HTTP
+ * redirect. Messages (and errors) are erased.
+ *
+ * @param $path
+ *   An installer path.
+ */
+function install_goto($path) {
+  global $base_url;
+  header('Location: '. $base_url .'/'. $path);
+  header('Cache-Control: no-cache'); // Not a permanent redirect.
+  exit();
+}
+
+/**
+ * Hardcoded function for doing the equivalent of t() during
+ * the install process, when database, theme, and localization
+ * system is possibly not yet available.
+ */
+function st($string, $args = array()) {
+  static $locale_strings = NULL;
+  global $profile, $install_locale;
+
+  if (!isset($locale_strings)) {
+    $locale_strings = array();
+    $filename = './profiles/'. $profile .'/translations/'. $install_locale .'.po';
+    if (file_exists($filename)) {
+      require_once './includes/locale.inc';
+      $file = (object) array('filepath' => $filename);
+      _locale_import_read_po('mem-store', $file);
+      $locale_strings = _locale_import_one_string('mem-report');
+    }
+  }
+
+  require_once './includes/theme.inc';
+  // Transform arguments before inserting them
+  foreach ($args as $key => $value) {
+    switch ($key[0]) {
+      // Escaped only
+      case '@':
+        $args[$key] = check_plain($value);
+        break;
+      // Escaped and placeholder
+      case '%':
+      default:
+        $args[$key] = '<em>'. check_plain($value) .'</em>';
+        break;
+      // Pass-through
+      case '!':
+    }
+  }
+  return strtr((!empty($locale_strings[$string]) ? $locale_strings[$string] : $string), $args);
+}
+
+/**
+ * Check a profile's requirements.
+ *
+ * @param profile
+ *   Name of profile to check.
+ */
+function drupal_check_profile($profile) {
+  include_once './includes/file.inc';
+
+  $profile_file = "./profiles/$profile/$profile.profile";
+
+  if (!isset($profile) || !file_exists($profile_file)) {
+    install_no_profile_error();
+  }
+
+  require_once($profile_file);
+
+  // Get a list of modules required by this profile.
+  $function = $profile .'_profile_modules';
+  $module_list = array_unique(array_merge(drupal_required_modules(), $function()));
+
+  // Get a list of all .install files.
+  $installs = drupal_get_install_files($module_list);
+
+  // Collect requirement testing results
+  $requirements = array();
+  foreach ($installs as $install) {
+    require_once $install->filename;
+    if (module_hook($install->name, 'requirements')) {
+      $requirements = array_merge($requirements, module_invoke($install->name, 'requirements', 'install'));
+    }
+  }
+  return $requirements;
+}
+
+/**
+ * Extract highest severity from requirements array.
+ */
+function drupal_requirements_severity(&$requirements) {
+  $severity = REQUIREMENT_OK;
+  foreach ($requirements as $requirement) {
+    if (isset($requirement['severity'])) {
+      $severity = max($severity, $requirement['severity']);
+    }
+  }
+  return $severity;
+}
+
+/**
+ * Check a module's requirements.
+ */
+function drupal_check_module($module) {
+  // Include install file
+  $install = drupal_get_install_files(array($module));
+  if (isset($install[$module])) {
+    require_once $install[$module]->filename;
+
+    // Check requirements
+    $requirements = module_invoke($module, 'requirements', 'install');
+    if (is_array($requirements) && drupal_requirements_severity($requirements) == REQUIREMENT_ERROR) {
+      // Print any error messages
+      foreach ($requirements as $requirement) {
+        if (isset($requirement['severity']) && $requirement['severity'] == REQUIREMENT_ERROR) {
+          $message = $requirement['description'];
+          if (isset($requirement['value']) && $requirement['value']) {
+            $message .= ' ('. t('Currently using !item !version', array('!item' => $requirement['title'], '!version' => $requirement['value'])) .')';
+          }
+          drupal_set_message($message, 'error');
+        }
+      }
+      return FALSE;
+    }
+  }
+  return TRUE;
+}