/**
* Process an image with Smush.it.
*
* Returns an array of the $file $results.
*
* @param string $file Full absolute path to the image file
* @returns array
*/
function wp_smushit($file)
{
// dont't run on localhost
if ('127.0.0.1' == $_SERVER['SERVER_ADDR']) {
return array($file, __('Not processed (local file)', WP_SMUSHIT_DOMAIN));
}
// canonicalize path
$file_path = realpath($file);
// check that the file exists
if (FALSE === file_exists($file_path) || FALSE === is_file($file_path)) {
$msg = sprintf(__("Could not {$file_path} find <span class='code'>%s</span>", WP_SMUSHIT_DOMAIN), $file_path);
return array($file, $msg);
}
// check that the file is writable
if (FALSE === is_writable($file_path)) {
$msg = sprintf(__("<span class='code'>%s</span> is not writable", WP_SMUSHIT_DOMAIN), $file_path);
return array($file, $msg);
}
// check that the file is within the WP_CONTENT_DIR
if (0 !== stripos(realpath($file_path), realpath(WP_CONTENT_DIR))) {
$msg = sprintf(__("<span class='code'>%s</span> must be within the content directory (<span class='code'>%s</span>)", WP_SMUSHIT_DOMAIN), htmlentities($file_path), WP_CONTENT_DIR);
return array($file, $msg);
}
// determine the public URL
$file_url = str_replace(WP_CONTENT_DIR, WP_CONTENT_URL, $file);
$data = wp_smushit_post($file_url);
if (FALSE === $data) {
return array($file, __('Error posting to Smush.it', WP_SMUSHIT_DOMAIN));
}
// make sure the response looks like JSON -- added 2008-12-19 when
// Smush.it was returning PHP warnings before the JSON output
if (strpos(trim($data), '{') != 0) {
return array($file, __('Bad response from Smush.it', WP_SMUSHIT_DOMAIN));
}
// read the JSON response
if (function_exists('json_decode')) {
$data = json_decode($data);
} else {
$json = new Services_JSON();
$data = $json->decode($data);
}
if (-1 === intval($data->dest_size)) {
return array($file, __('No savings', WP_SMUSHIT_DOMAIN));
}
if (!$data->dest) {
$err = $data->error ? 'Smush.it error: ' . $data->error : 'unknown error';
return array($file, __($err, WP_SMUSHIT_DOMAIN));
}
$processed_url = $data->dest;
// The smush.it web service does not append the domain;
// smushit.com web service does
if (0 !== stripos($processed_url, 'http://')) {
$processed_url = SMUSHIT_BASE_URL . $processed_url;
}
$temp_file = download_url($processed_url);
if (is_wp_error($temp_file)) {
@unlink($tmp);
$results_msg = sprintf(__("Error downloading file (%s)", WP_SMUSHIT_DOMAIN), $temp_file->get_error_message());
return array($file, $results_msg);
}
@rename($temp_file, $file_path);
$savings = intval($data->src_size) - intval($data->dest_size);
$savings_str = wp_smushit_format_bytes($savings, 1);
$savings_str = str_replace(' ', ' ', $savings_str);
$results_msg = sprintf(__("Reduced by %01.1f%% (%s)", WP_SMUSHIT_DOMAIN), $data->percent, $savings_str);
return array($file, $results_msg);
}
/**
* Process an image with Smush.it.
*
* Returns an array of the $file $results.
*
* @param string $file Full absolute path to the image file
* @param string $file_url Optional full URL to the image file
* @returns array
*/
function wp_smushit($file, $file_url = null)
{
// don't run on localhost, IPv4 and IPv6 checks
// if( in_array($_SERVER['SERVER_ADDR'], array('127.0.0.1', '::1')) )
// return array($file, __('Not processed (local file)', WP_SMUSHIT_DOMAIN));
// canonicalize path - disabled 2011-02-1 troubleshooting 'Could not find...' errors.
// From the PHP docs: "The running script must have executable permissions on
// all directories in the hierarchy, otherwise realpath() will return FALSE."
// $file_path = realpath($file);
$file_path = $file;
// check that the file exists
if (FALSE === file_exists($file_path) || FALSE === is_file($file_path)) {
$msg = sprintf(__("Could not find <span class='code'>%s</span>", WP_SMUSHIT_DOMAIN), $file_path);
return array($file, $msg);
}
// check that the file is writable
if (FALSE === is_writable($file_path)) {
$msg = sprintf(__("<span class='code'>%s</span> is not writable", WP_SMUSHIT_DOMAIN), $file_path);
return array($file, $msg);
}
// check that the file is within the WP_CONTENT_DIR
$upload_dir = wp_upload_dir();
$wp_upload_dir = $upload_dir['basedir'];
$wp_upload_url = $upload_dir['baseurl'];
if (0 !== stripos(realpath($file_path), realpath(ABSPATH))) {
$msg = sprintf(__("<span class='code'>%s</span> must be within the content directory (<span class='code'>%s</span>)", WP_SMUSHIT_DOMAIN), htmlentities($file_path), $wp_upload_dir);
return array($file, $msg);
}
if (!$file_url) {
// determine the public URL
$file_url = str_replace($wp_upload_dir, $wp_upload_url, $file);
}
$data = wp_smushit_post($file_url);
if (FALSE === $data) {
return array($file, __('Error posting to Smush.it', WP_SMUSHIT_DOMAIN));
}
// make sure the response looks like JSON -- added 2008-12-19 when
// Smush.it was returning PHP warnings before the JSON output
if (strpos(trim($data), '{') != 0) {
return array($file, __('Bad response from Smush.it', WP_SMUSHIT_DOMAIN));
}
// read the JSON response
if (function_exists('json_decode')) {
$data = json_decode($data);
} else {
$json = new Services_JSON();
$data = $json->decode($data);
}
if (-1 === intval($data->dest_size)) {
return array($file, __('No savings', WP_SMUSHIT_DOMAIN));
}
if (!$data->dest) {
$err = $data->error ? 'Smush.it error: ' . $data->error : 'unknown error';
$err .= " while processing <span class='code'>{$file_url}</span> (<span class='code'>{$file_path}</span>)";
return array($file, __($err, WP_SMUSHIT_DOMAIN));
}
$processed_url = $data->dest;
// The smush.it web service does not append the domain;
// smushit.com web service does
if (0 !== stripos($processed_url, 'http://')) {
$processed_url = SMUSHIT_BASE_URL . $processed_url;
}
$temp_file = download_url($processed_url);
if (is_wp_error($temp_file)) {
@unlink($tmp);
$results_msg = sprintf(__("Error downloading file (%s)", WP_SMUSHIT_DOMAIN), $temp_file->get_error_message());
return array($file, $results_msg);
}
@rename($temp_file, $file_path);
$savings = intval($data->src_size) - intval($data->dest_size);
$savings_str = wp_smushit_format_bytes($savings, 1);
$savings_str = str_replace(' ', ' ', $savings_str);
$results_msg = sprintf(__("Reduced by %01.1f%% (%s)", WP_SMUSHIT_DOMAIN), $data->percent, $savings_str);
return array($file, $results_msg);
}
