function _google_tag_is_executable in GoogleTagManager 7

Same name and namespace in other branches

1. 8 google_tag.module \_google_tag_is_executable()
2. 7.2 google_tag.module \_google_tag_is_executable()

Determines whether a directory is searchable.

Remove this if PHP is_executable() is changed to not return FALSE simply because the URI points to a directory (not a file) in a stream wrapper other than the local file wrapper provided by PHP.

Parameters

string $uri: A directory path or stream wrapper URI.

Return value

bool Whether the directory is searchable.

3 calls to _google_tag_is_executable()

google_tag_requirements in ./google_tag.install

Implements hook_requirements().

_file_prepare_directory in includes/admin.inc

Checks that the directory exists and is writable.

_google_tag_directory_prepare in includes/admin.inc

Prepares directory for base or realm specific snippet files.

File

includes/admin.inc, line 468

Contains the administrative page and form callbacks.

Code

function _google_tag_is_executable($uri) {
  if ($wrapper = file_stream_wrapper_get_instance_by_uri($uri)) {
    if ($realpath = $wrapper
      ->realpath($uri)) {

      // The URI is a local stream wrapper.
      // Use local path since PHP only checks ACLs on its local file wrapper.
      // Remove OS check if PHP is_executable() is changed to not return FALSE
      // simply because the URI points to a directory (not a file) on Windows.
      return _google_tag_is_windows() || is_executable($realpath);
    }

    // The URI is a remote stream wrapper.
    if (!($stat = $wrapper
      ->url_stat($uri, 0))) {
      return FALSE;
    }
    if (!function_exists('posix_getuid') || !function_exists('posix_getgid')) {

      // These functions are never defined on Windows and the extension that
      // provides them may not be included on a Linux distribution.
      // If directory is not searchable, then fault the site deployment process.
      // @todo Is it worse to return true or false at this point?
      return TRUE;
    }

    // Determine the appropriate permissions bit mask as an octal.
    // The stat array is likely to have uid=gid=0 so that the mask is octal 01.
    // This is true for Amazon S3 and Google Cloud Storage.
    $mask = 1;
    if ($stat['uid'] == posix_getuid()) {
      $mask = $mask << 6;
    }
    elseif ($stat['gid'] == posix_getgid()) {
      $mask = $mask << 3;
    }
    return ($stat['mode'] & $mask) != 0;
  }
  else {

    // The URI is a local path.
    return is_executable($uri);
  }
}