- Patch #68926 by chx, jeremy, steven, eaton, webchick, amazon, neil, nedjo et al: an initial install system for Drupal core.

1 files changed, 428 insertions, 7 deletions

diff --git a/includes/install.inc b/includes/install.inc
index cff01f798..bef15c617 100644
--- a/includes/install.inc
+++ b/includes/install.inc
@@ -4,15 +4,29 @@
 define('SCHEMA_UNINSTALLED', -1);
 define('SCHEMA_INSTALLED', 0);
 
+define('DRUPAL_MINIMUM_PHP',    '4.3.3');
+define('DRUPAL_MINIMUM_MEMORY', '8M');
+define('DRUPAL_MINIMUM_MYSQL',  '3.23.17'); // If using MySQL
+define('DRUPAL_MINIMUM_PGSQL',  '7.3');  // If using PostgreSQL
+define('DRUPAL_MINIMUM_APACHE', '1.3');  // If using Apache
 
-// The system module (Drupal core) is currently a special case
-include_once './database/updates.inc';
+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);
 
-// Include install files for each module
-foreach (module_list() as $module) {
-  $install_file = './'. drupal_get_path('module', $module) .'/'. $module .'.install';
-  if (is_file($install_file)) {
-    include_once $install_file;
+// Initialize the update system if necessary
+if (!$install) {
+  // Include install files for each installed module.
+  foreach (module_list() as $module) {
+    $install_file = './'. drupal_get_path('module', $module) .'/'. $module .'.install';
+    if (is_file($install_file)) {
+      include_once $install_file;
+    }
   }
 }
 
@@ -79,3 +93,410 @@ function drupal_get_installed_schema_version($module, $reset = FALSE) {
 function drupal_set_installed_schema_version($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']);
+  $uri = str_replace("?profile=$profile", '', $_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 = '') {
+  $settings_file = './'. conf_path() .'/'. $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($settings_file, 'r+')) {
+    // Step line by line through settings.php.
+    while (!feof($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] ." = '". $setting['value'] ."';". ($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' => $settings_file)), '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, file_scan_directory('./modules', "^$module.install$", array('.', '..', 'CVS'), 0, TRUE, 'name', 0));
+  }
+  return $installs;
+}
+
+/**
+ * Install a profile.
+ *
+ * @param profile
+ *   Name of profile to install.
+ */
+function drupal_install_profile($profile) {
+  global $db_type;
+
+  include_once './includes/file.inc';
+
+  $profile_file = "./profiles/$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 = $function();
+
+  // Verify that all required modules exist.
+  $modules = array();
+  foreach ($module_list as $current) {
+    $module = file_scan_directory('./modules', "^$current.module$", array('.', '..', 'CVS'), 0, TRUE, 'name', 0);
+    if (empty($module)) {
+      drupal_set_message(st('The %module module is required but was not found. Please move the file %file into the <em>modules</em> subdirectory.', array('%module' => $current, '%file' => $current .'.module')), 'error');
+    }
+    else {
+      $modules = array_merge($modules, $module);
+    }
+  }
+
+  // Get a list of all .install files.
+  $installs = drupal_get_install_files($module_list);
+
+  // Install schemas for profile and all its modules.
+  $function = $profile .'_install';
+  if (function_exists($function)) {
+    $function();
+  }
+
+  foreach ($installs as $install) {
+    require_once $install->filename;
+    module_invoke($install->name, 'install');
+  }
+
+  // Enable the modules required by the profile.
+  db_query("DELETE FROM {system} WHERE type = 'module'");
+  foreach ($modules as $module) {
+    db_query("INSERT INTO {system} (filename, name, type, description, status, throttle, bootstrap, schema_version) VALUES('%s', '%s', 'module', '', 1, 0, 0, 0)", $module->filename, $module->name);
+  }
+}
+
+/**
+ * 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 $message_type
+ *   The type of message to create, can be error or status. Passed on to drupal_set_message as second parameter.
+ *   Set to NULL to not output any messages at all.
+ * @param $type
+ *   The type of file. Can be file (default), dir, or link.
+ * @return
+ *   TRUE on success or FALSE on failure. A messsage is set for the latter.
+ */
+function drupal_verify_install_file($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.
+ *
+ * @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) {
+  $mod = substr(sprintf('%o', fileperms($file)), -4);
+  $prefix = substr($mod, 0, 1);
+  $mod = substr($mod, 1 ,4);
+  $masks = array(FILE_READABLE, FILE_WRITABLE, FILE_EXECUTABLE, FILE_NOT_READABLE, FILE_NOT_WRITABLE, FILE_NOT_EXECUTABLE);
+  foreach ($masks as $m) {
+    if ($mask & $m) {
+      switch ($m) {
+        case FILE_READABLE:
+          if (!is_readable($file)) {
+            $mod += 444;
+          }
+          break;
+        case FILE_WRITABLE:
+          if (!is_writable($file)) {
+            $mod += 222;
+          }
+          break;
+        case FILE_EXECUTABLE:
+          if (!is_executable($file)) {
+            $mod += 111;
+          }
+          break;
+        case FILE_NOT_READABLE:
+          if (is_readable($file)) {
+            $mod -= 444;
+          }
+          break;
+        case FILE_NOT_WRITABLE:
+          if (is_writable($file)) {
+            $mod -= 222;
+          }
+          break;
+        case FILE_NOT_EXECUTABLE:
+          if (is_executable($file)) {
+            $mod -= 111;
+          }
+          break;
+      }
+    }
+  }
+
+  if (@chmod($file, intval("$prefix$mod", 8))) {
+    return TRUE;
+  }
+  else {
+    return FALSE;
+  }
+}
+
+/**
+ * Hardcoded function for doing the equivalent of theme('placeholder')
+ * when the theme system is not available.
+ */
+function st($string, $args = array()) {
+  require_once './includes/theme.inc';
+  return strtr($string, array_map('theme_placeholder', $args));
+}
\ No newline at end of file