';
// $result = exec( 'rm -rfv ' . $dir, $output, $code );
// var_dump( $result ); // ==> empty when not done, echoes "removed directory: `/foo/bar'" when done
// echo '
';
// var_dump( $output ); // ==> empty when not done, holds lines of command output when done
// echo '
';
// var_dump( $code ); // ==> 0 when command executed successfully, 1 when not
// echo '
';
// return;
// Keep count of recursively accessed files.
static $total_files = 0;
static $total_dirs = 0;
static $total_size = 0;
// Do not take into acount files and symbolic links.
if ( is_dir( $dir ) && ! is_link( $dir ) ) {
$objects = scandir( $dir );
foreach ( $objects as $object ) {
if ( $object != "." && $object != ".." ) {
$file = $dir . "/" . $object;
if ( filetype( $file ) == "dir" ) {
// Descend into directory children.
$total_dirs++;
adaptive_images_actions_rmdir_recursive( $file );
} else {
// Delete file.
$total_files++;
$total_size += filesize( $file );
unlink( $file );
}
}
}
reset( $objects );
rmdir( $dir );
}
return array( 'files' => $total_files, 'size' => $total_size, 'dirs' => $total_dirs );
}
/**
* Creates the .htaccess rewrite block which ensures that images in watched directories are filtered by the
* adaptive images plugin.
*
* @author Nevma (info@nevma.gr)
*
* @param array $data The adaptive images options. If not given then the existing ones from the database will be
* used.
*
* @return string The adaptive images plugin .htaccess rewrite block.
*/
function adaptive_images_actions_get_htaccess_block ( $data ) {
// If no options data given then take what is in the database.
if ( ! $data ) {
$data = get_option( 'adaptive-images' );
}
// Get the directory part of the request, if we are not in the virtual host root directory.
$request_uri = $_SERVER['REQUEST_URI'];
$request_uri_base = substr( $request_uri, 0, strpos( $request_uri, '/wp-admin', 1 ) );
// Isolate the relative path of the adaptive images PHP script inside the WordPress installation directory.
$wp_home_path = get_home_path();
$wp_home_path = preg_replace( '/\//i', '\/', $wp_home_path );
$wp_home_path = preg_replace( '/\./i', '\\.', $wp_home_path );
$adaptive_images_dir_path = dirname( __FILE__ );
$adaptive_images_dir_path_relative = preg_replace( '/' . $wp_home_path . '/i', '', $adaptive_images_dir_path );
$adaptive_images_php_script = ( $request_uri_base != '' ? $request_uri_base : '' ) . '/' . $adaptive_images_dir_path_relative . '/adaptive-images-script.php';
// If no starting slash then add it.
if ( strpos( $adaptive_images_php_script, '/' ) !== 0 ) {
$adaptive_images_php_script = '/' . $adaptive_images_php_script;
}
// Create the watched directories .htaccess block part.
$htaccess_rewrite_block =
"# BEGIN Adaptive Images\n".
"#=======================\n" .
"\n" .
"\n" .
"\n" .
" RewriteEngine On\n" .
"\n" .
" # Watched directories\n";
for ( $k = 0, $length = count( $data['watched-directories'] ); $k < $length; $k++ ) {
$watched_directory = $data['watched-directories'][$k];
$htaccess_rewrite_block .=
" RewriteCond %{REQUEST_URI} " . $request_uri_base . '/' . $watched_directory . ( $k < $length-1 ? ' [OR]' : "\n" ) . "\n";
}
// Create the rewrite .htaccess block part.
$htaccess_rewrite_block .=
" # Redirect images through the adaptive images script\n".
" RewriteRule \.(?:jpe?g|gif|png)$ " . $adaptive_images_php_script . " [L]\n" .
"\n" .
"\n" .
"\n" .
"# END Adaptive Images";
return $htaccess_rewrite_block;
}
/**
* Creates a snippet of NginX configuration which must be added manually.
*
* @author Nevma (info@nevma.gr)
*
* @return string The adaptive images plugin .htaccess rewrite block.
*/
function adaptive_images_actions_nginx_get_block () {
// Create the NginX rewrite block part.
$nginx_rewrite_block =
'location / {' . "\n" .
' rewrite \.(?:jpe?g|gif|png)$ /wp-content/plugins/adaptive-images/adaptive-images-script.php;' . "\n" .
'}';
return $nginx_rewrite_block;
}
/**
* Updates the htacces file by adding the adaptive images rewrite block.
*
* @author Nevma (info@nevma.gr)
*
* @param array $data The adaptive images options. If not given then the existing ones from the database will be used.
*
* @return boolean|WP_Error Whether the .htaccess file was able to be updated or not.
*/
function adaptive_images_actions_update_htaccess ( $data ) {
// If no options data given then take what is in the database.
if ( ! $data ) {
$data = get_option( 'adaptive-images' );
}
// If no options in the database then this is probably a fresh install, so stop.
if ( ! $data ) {
return;
}
// Check if .htaccess is available.
$htaccess_rewrite_block = adaptive_images_actions_get_htaccess_block( $data );
$htaccess = adaptive_images_plugin_get_htaccess_file_path();
$htaccess_writeable = adaptive_images_plugin_is_htaccess_writeable();
// If .htaccess available then update it with the adaprive images rewrite block.
if ( ! $htaccess_writeable ) {
return new WP_Error( 'adaptive-images-htaccess-unavailable', 'The .htaccess file could not be updated.', array( 'htaccess' => $htaccess, 'rewrite' => $htaccess_rewrite_block ) );
} else {
// Replace old adaptive images .htaccess rewrite block with new one, or write it for the first time if it does not exist yet.
$htaccess_old_contents = file_get_contents( $htaccess );
$htaccess_rewrite_block_regexp = '/# BEGIN Adaptive Images.*# END Adaptive Images\n/s';
if ( preg_match( $htaccess_rewrite_block_regexp, $htaccess_old_contents ) ) {
$htaccess_new_contents = preg_replace( $htaccess_rewrite_block_regexp, $htaccess_rewrite_block . "\n", $htaccess_old_contents );
} else {
$htaccess_new_contents = $htaccess_rewrite_block . "\n\n" . $htaccess_old_contents;
}
// Write new contents of .htaccess.
$bytes = @file_put_contents( $htaccess, $htaccess_new_contents );
if ( $bytes === FALSE ) {
return new WP_Error( 'adaptive-images-htaccess-not-updated', 'The .htaccess file could not be updated.', array( 'htaccess' => $htaccess, 'rewrite' => $htaccess_rewrite_block ) );
} else {
return FALSE;
}
}
}
/**
* Restores the htacces file by removeing the adaptive images rewrite block.
*
* @author Nevma (info@nevma.gr)
*
* @return boolean|WP_Error Whether the .htaccess file was able to be restored or not.
*/
function adaptive_images_actions_restore_htaccess () {
// Check if .htaccess is available.
$htaccess = adaptive_images_plugin_get_htaccess_file_path();
$htaccess_writeable = adaptive_images_plugin_is_htaccess_writeable();
// If .htaccess available then update it with the adaprive images rewrite block.
if ( ! $htaccess_writeable ) {
return new WP_Error( 'adaptive-images-htaccess-unavailable', 'The .htaccess file could not be restored.', array( 'htaccess' => $htaccess, 'rewrite' => $htaccess_rewrite_block ) );
} else {
$htaccess_old_contents = file_get_contents( $htaccess );
$htaccess_new_contents = preg_replace( '/# BEGIN Adaptive Images.*# END Adaptive Images\n/s', '', $htaccess_old_contents );
// Write new contents of .htaccess.
$bytes = @file_put_contents( $htaccess, $htaccess_new_contents );
if ( $bytes === FALSE ) {
return new WP_Error( 'adaptive-images-htaccess-not-updated', 'The .htaccess file could not be updated.', array( 'htaccess' => $htaccess, 'rewrite' => $htaccess_rewrite_block ) );
} else {
return FALSE;
}
}
}
/**
* Saves the adaptive images settings in the designated PHP file.
*
* @author Nevma (info@nevma.gr)
*
* @param array $data The validated data submitted in the plugin admin settings page.
*
* @return boolean|WP_Error Whether the user settings file was successfully saved or not!
*/
function adaptive_images_actions_save_user_settings ( $data ) {
$settings_code =
"";
$file = adaptive_images_plugin_get_user_settings_file_path();
$bytes = @file_put_contents( $file, $settings_code );
if ( $bytes === FALSE ) {
return new WP_Error( 'adaptive-images-user-settings-not-updated', 'User settings file could not be updated.', array( 'file' => $file ) );
} else {
return TRUE;
}
}
/**
* Checks if the PHP GD image library is available in the server and informs the user in the admin.
*
* @author Nevma (info@nevma.gr)
*
* @return void Nothing really!
*/
function adaptive_images_actions_check_gd_available () {
// Do the check and inform user.
if ( ! adaptive_images_plugin_is_gd_extension_installed() ) {
add_action( 'admin_notices', 'adaptive_images_actions_check_gd_available_message' );
}
}
/**
* Adds the admin notice error that informs the user when the check for the PHP GD has failed. It is done via an
* admin notice and not via the settings errors, because in some pages the settings errors are called by the system
* itself and this results in being called multiple times.
*
* @author Nevma (info@nevma.gr)
*
* @return void Nothing really!
*/
function adaptive_images_actions_check_gd_available_message () {
echo
'' .
'
' .
'Adaptive Images Error — PHP GD image library missing' .
'
' .
'
' .
'
' .
'The PHP GD image library is not detected in your server.' .
'
' .
'
' .
'This is absolutely necessary for the plugin to function properly. Please deactivate the plugin immediately and activate it after having installed the PHP GD image library.' .
'
' .
'
' .
'You should probably contact your system administrator about this. You may find more information about it at the PHP GD image library page, in the php.net website.' .
'
' .
'
' .
'
' .
'Adaptive Images Error — The .htaccess file is not updated' .
'
' .
'
' .
'
' .
'The Adaptive Images settings are saved, but the .htaccess file was not able to be updated yet.' .
'
' .
'
' . '
Please try to save the plugin settings once again in Adaptive Images Settings. If the problem persists, then you should contact your system administrator and inform them about the issue.' .
'
' .
'
' .
'The .htaccess file permissions are: ' . $htaccess . ' => ' . $permissions . '.' .
'
' .
'
' .
'
' .
'Adaptive Images Error — Settings not saved' .
'
' .
'
' .
'
' .
'The Adaptive Images settings have not been saved yet.' .
'
' .
'
' .
'The plugin is active but its settings have not been initialized, so the plugin is not actually functioning yet.' .
'
' .
'
Nothing to worry about, just go to Adaptive Images Settings page in order to save your configuration and start to actually use the plugin.'.
'
' .
'