protected function task($item)
{
session_write_close();
global $ewww_defer;
$ewww_defer = false;
$max_attempts = 15;
$id = $item['id'];
if (empty($item['attempts'])) {
$item['attempts'] = 0;
}
ewwwio_debug_message("background processing {$id}, type: " . $item['type']);
$type = $item['type'];
$image_types = array('image/jpeg', 'image/png', 'image/gif');
$meta = wp_get_attachment_metadata($id, true);
if (in_array($type, $image_types) && empty($meta) && $item['attempts'] < $max_attempts) {
$item['attempts']++;
sleep(4);
ewwwio_debug_message("metadata is missing, requeueing {$item['attempts']}");
ewww_image_optimizer_debug_log();
return $item;
} elseif (in_array($type, $image_types) && empty($meta)) {
ewwwio_debug_message("metadata is missing for image, out of attempts");
ewww_image_optimizer_debug_log();
delete_transient('ewwwio-background-in-progress-' . $id);
return false;
}
$meta = ewww_image_optimizer_resize_from_meta_data($meta, $id, true, $item['new']);
if (!empty($meta['processing'])) {
$item['attempts']++;
ewwwio_debug_message("image not finished, try again");
ewww_image_optimizer_debug_log();
return $item;
}
wp_update_attachment_metadata($id, $meta);
ewww_image_optimizer_debug_log();
delete_transient('ewwwio-background-in-progress-' . $id);
return false;
}
function ewww_image_optimizer_bulk_media($delay = 0)
{
$attachments = null;
// check if there is a previous bulk operation to resume
if (get_option('ewww_image_optimizer_bulk_resume')) {
// retrieve the attachment IDs that have not been finished from the 'bulk attachments' option
$attachments = get_option('ewww_image_optimizer_bulk_attachments');
// since we aren't resuming, and weren't given a list of IDs, we will optimize everything
} else {
global $wpdb;
// load up all the image attachments we can find
$attachments = $wpdb->get_col("SELECT ID FROM {$wpdb->posts} WHERE (post_type = 'attachment' OR post_type = 'ims_image') AND (post_mime_type LIKE '%%image%%' OR post_mime_type LIKE '%%pdf%%') ORDER BY ID DESC");
// store the attachment IDs we retrieved in the 'bulk_attachments' option so we can keep track of our progress in the database
update_option('ewww_image_optimizer_bulk_attachments', $attachments, false);
// update the 'bulk resume' option to show that an operation is in progress
update_option('ewww_image_optimizer_bulk_resume', 'true');
}
if (ewww_image_optimizer_iterable($attachments)) {
foreach ($attachments as $attachment_ID) {
// get the 'bulk attachments' with a list of IDs remaining
$attachments_left = get_option('ewww_image_optimizer_bulk_attachments');
$meta = wp_get_attachment_metadata($attachment_ID);
if (!empty($meta['file'])) {
// let the user know the file we are currently optimizing
WP_CLI::line(__('Optimizing', EWWW_IMAGE_OPTIMIZER_DOMAIN) . " {$meta['file']}:");
}
sleep($delay);
// retrieve the time when the optimizer starts
$started = microtime(true);
// do the optimization for the current attachment (including resizes)
$meta = ewww_image_optimizer_resize_from_meta_data($meta, $attachment_ID, false);
if (empty($meta['file'])) {
WP_CLI::warning(__('Skipped image, ID:', EWWW_IMAGE_OPTIMIZER_DOMAIN) . " {$attachment}");
}
if (!empty($meta['ewww_image_optimizer'])) {
// tell the user what the results were for the original image
WP_CLI::line(sprintf(__('Full size – %s', EWWW_IMAGE_OPTIMIZER_DOMAIN), html_entity_decode($meta['ewww_image_optimizer'])));
}
// check to see if there are resized version of the image
if (isset($meta['sizes']) && is_array($meta['sizes'])) {
// cycle through each resize
foreach ($meta['sizes'] as $size) {
if (!empty($size['ewww_image_optimizer'])) {
// output the results for the current resized version
WP_CLI::line("{$size['file']} – " . html_entity_decode($size['ewww_image_optimizer']));
}
}
}
// calculate how much time has elapsed since we started
$elapsed = microtime(true) - $started;
// output how much time has elapsed since we started
WP_CLI::line(sprintf(__('Elapsed: %.3f seconds', EWWW_IMAGE_OPTIMIZER_DOMAIN), $elapsed));
// update the metadata for the current attachment
wp_update_attachment_metadata($attachment_ID, $meta);
// remove the first element from the $attachments array
if (!empty($attachments_left)) {
array_shift($attachments_left);
}
// store the updated list of attachment IDs back in the 'bulk_attachments' option
update_option('ewww_image_optimizer_bulk_attachments', $attachments_left, false);
}
}
// all done, so we can update the bulk options with empty values
update_option('ewww_image_optimizer_bulk_resume', '');
update_option('ewww_image_optimizer_bulk_attachments', '', false);
// and let the user know we are done
WP_CLI::success(__('Finished Optimization!', EWWW_IMAGE_OPTIMIZER_DOMAIN));
}
/**
* Manually process an image from the Media Library
*/
function ewww_image_optimizer_manual()
{
global $ewww_debug;
$ewww_debug .= "<b>ewww_image_optimizer_manual()</b><br>";
// check permissions of current user
$permissions = apply_filters('ewww_image_optimizer_manual_permissions', '');
if (FALSE === current_user_can($permissions)) {
// display error message if insufficient permissions
wp_die(__('You don\'t have permission to optimize images.', EWWW_IMAGE_OPTIMIZER_DOMAIN));
}
// make sure we didn't accidentally get to this page without an attachment to work on
if (FALSE === isset($_GET['ewww_attachment_ID'])) {
// display an error message since we don't have anything to work on
wp_die(__('No attachment ID was provided.', EWWW_IMAGE_OPTIMIZER_DOMAIN));
}
// store the attachment ID value
$attachment_ID = intval($_GET['ewww_attachment_ID']);
// retrieve the existing attachment metadata
$original_meta = wp_get_attachment_metadata($attachment_ID);
// if the call was to optimize...
if ($_REQUEST['action'] === 'ewww_image_optimizer_manual_optimize') {
// call the optimize from metadata function and store the resulting new metadata
$new_meta = ewww_image_optimizer_resize_from_meta_data($original_meta, $attachment_ID);
} elseif ($_REQUEST['action'] === 'ewww_image_optimizer_manual_restore') {
$new_meta = ewww_image_optimizer_restore_from_meta_data($original_meta, $attachment_ID);
}
// update the attachment metadata in the database
wp_update_attachment_metadata($attachment_ID, $new_meta);
// store the referring webpage location
$sendback = wp_get_referer();
// sanitize the referring webpage location
$sendback = preg_replace('|[^a-z0-9-~+_.?#=&;,/:]|i', '', $sendback);
// send the user back where they came from
wp_redirect($sendback);
// we are done, nothing to see here
ewwwio_memory(__FUNCTION__);
exit(0);
}
function ewww_image_optimizer_bulk_loop()
{
global $ewww_debug;
global $ewww_exceed;
// verify that an authorized user has started the optimizer
$permissions = apply_filters('ewww_image_optimizer_bulk_permissions', '');
if (!wp_verify_nonce($_REQUEST['ewww_wpnonce'], 'ewww-image-optimizer-bulk') || !current_user_can($permissions)) {
wp_die(__('Cheatin’ eh?', EWWW_IMAGE_OPTIMIZER_DOMAIN));
}
if (!empty($_REQUEST['ewww_sleep'])) {
sleep($_REQUEST['ewww_sleep']);
}
// retrieve the time when the optimizer starts
$started = microtime(true);
// get the attachment ID of the current attachment
$attachment = $_POST['ewww_attachment'];
// get the 'bulk attachments' with a list of IDs remaining
$attachments = get_option('ewww_image_optimizer_bulk_attachments');
$meta = wp_get_attachment_metadata($attachment, true);
// do the optimization for the current attachment (including resizes)
$meta = ewww_image_optimizer_resize_from_meta_data($meta, $attachment, false);
if (!empty($ewww_exceed)) {
echo '-9exceeded';
die;
}
if (!empty($meta['file'])) {
// output the filename (and path relative to 'uploads' folder)
printf("<p>" . __('Optimized image:', EWWW_IMAGE_OPTIMIZER_DOMAIN) . " <strong>%s</strong><br>", esc_html($meta['file']));
} else {
printf("<p>" . __('Skipped image, ID:', EWWW_IMAGE_OPTIMIZER_DOMAIN) . " <strong>%s</strong><br>", $attachment);
}
if (!empty($meta['ewww_image_optimizer'])) {
// tell the user what the results were for the original image
printf(__('Full size – %s', EWWW_IMAGE_OPTIMIZER_DOMAIN) . "<br>", $meta['ewww_image_optimizer']);
}
// check to see if there are resized version of the image
if (isset($meta['sizes']) && is_array($meta['sizes'])) {
// cycle through each resize
foreach ($meta['sizes'] as $size) {
if (!empty($size['ewww_image_optimizer'])) {
// output the results for the current resized version
printf("%s – %s<br>", $size['file'], $size['ewww_image_optimizer']);
}
}
}
// calculate how much time has elapsed since we started
$elapsed = microtime(true) - $started;
// output how much time has elapsed since we started
printf(__('Elapsed: %.3f seconds', EWWW_IMAGE_OPTIMIZER_DOMAIN) . "</p>", $elapsed);
global $ewww_attachment;
$ewww_attachment['id'] = $attachment;
$ewww_attachment['meta'] = $meta;
add_filter('w3tc_cdn_update_attachment_metadata', 'ewww_image_optimizer_w3tc_update_files');
// update the metadata for the current attachment
wp_update_attachment_metadata($attachment, $meta);
// remove the first element from the $attachments array
if (!empty($attachments)) {
array_shift($attachments);
}
// store the updated list of attachment IDs back in the 'bulk_attachments' option
update_option('ewww_image_optimizer_bulk_attachments', $attachments);
if (ewww_image_optimizer_get_option('ewww_image_optimizer_debug')) {
echo '<div style="background-color:#ffff99;">' . $ewww_debug . '</div>';
}
ewww_image_optimizer_debug_log();
ewwwio_memory(__FUNCTION__);
die;
}
function ewww_image_optimizer_bulk_loop()
{
ewwwio_debug_message('<b>' . __FUNCTION__ . '()</b>');
global $ewww_defer;
$ewww_defer = false;
$output = array();
// verify that an authorized user has started the optimizer
$permissions = apply_filters('ewww_image_optimizer_bulk_permissions', '');
if (!wp_verify_nonce($_REQUEST['ewww_wpnonce'], 'ewww-image-optimizer-bulk') || !current_user_can($permissions)) {
$output['error'] = esc_html__('Access token has expired, please reload the page.', EWWW_IMAGE_OPTIMIZER_DOMAIN);
echo json_encode($output);
die;
}
session_write_close();
// retrieve the time when the optimizer starts
$started = microtime(true);
if (ewww_image_optimizer_stl_check() && ini_get('max_execution_time')) {
set_time_limit(0);
}
// find out if our nonce is on it's last leg/tick
$tick = wp_verify_nonce($_REQUEST['ewww_wpnonce'], 'ewww-image-optimizer-bulk');
if ($tick === 2) {
$output['new_nonce'] = wp_create_nonce('ewww-image-optimizer-bulk');
} else {
$output['new_nonce'] = '';
}
// get the 'bulk attachments' with a list of IDs remaining
$attachments = get_option('ewww_image_optimizer_bulk_attachments');
$attachment = array_shift($attachments);
$meta = wp_get_attachment_metadata($attachment, true);
// do the optimization for the current attachment (including resizes)
$meta = ewww_image_optimizer_resize_from_meta_data($meta, $attachment, false);
$ewww_status = get_transient('ewww_image_optimizer_cloud_status');
if (!empty($ewww_status) && preg_match('/exceeded/', $ewww_status)) {
$output['error'] = esc_html__('License Exceeded', EWWW_IMAGE_OPTIMIZER_DOMAIN);
echo json_encode($output);
die;
}
if (!empty($meta['file'])) {
// output the filename (and path relative to 'uploads' folder)
$output['results'] = sprintf("<p>" . esc_html__('Optimized', EWWW_IMAGE_OPTIMIZER_DOMAIN) . " <strong>%s</strong><br>", esc_html($meta['file']));
} else {
$output['results'] = sprintf("<p>" . esc_html__('Skipped image, ID:', EWWW_IMAGE_OPTIMIZER_DOMAIN) . " <strong>%s</strong><br>", esc_html($attachment));
}
if (!empty($meta['ewww_image_optimizer'])) {
// tell the user what the results were for the original image
$output['results'] .= sprintf(esc_html__('Full size – %s', EWWW_IMAGE_OPTIMIZER_DOMAIN) . "<br>", esc_html($meta['ewww_image_optimizer']));
}
// check to see if there are resized version of the image
if (isset($meta['sizes']) && is_array($meta['sizes'])) {
// cycle through each resize
foreach ($meta['sizes'] as $size) {
if (!empty($size['ewww_image_optimizer'])) {
// output the results for the current resized version
$output['results'] .= sprintf("%s – %s<br>", esc_html($size['file']), esc_html($size['ewww_image_optimizer']));
}
}
}
// calculate how much time has elapsed since we started
$elapsed = microtime(true) - $started;
// output how much time has elapsed since we started
$output['results'] .= sprintf(esc_html__('Elapsed: %.3f seconds', EWWW_IMAGE_OPTIMIZER_DOMAIN) . "</p>", $elapsed);
global $ewww_attachment;
$ewww_attachment['id'] = $attachment;
$ewww_attachment['meta'] = $meta;
add_filter('w3tc_cdn_update_attachment_metadata', 'ewww_image_optimizer_w3tc_update_files');
// update the metadata for the current attachment
wp_update_attachment_metadata($attachment, $meta);
// store the updated list of attachment IDs back in the 'bulk_attachments' option
update_option('ewww_image_optimizer_bulk_attachments', $attachments);
if (ewww_image_optimizer_get_option('ewww_image_optimizer_debug')) {
global $ewww_debug;
$output['results'] .= '<div style="background-color:#ffff99;">' . $ewww_debug . '</div>';
}
if (!empty($attachments)) {
$next_attachment = array_shift($attachments);
$next_file = ewww_image_optimizer_bulk_filename($next_attachment);
// generate the WP spinner image for display
$loading_image = plugins_url('/images/wpspin.gif', __FILE__);
if ($next_file) {
$output['next_file'] = "<p>" . esc_html__('Optimizing', EWWW_IMAGE_OPTIMIZER_DOMAIN) . " <b>{$next_file}</b> <img src='{$loading_image}' /></p>";
} else {
$output['next_file'] = "<p>" . esc_html__('Optimizing', EWWW_IMAGE_OPTIMIZER_DOMAIN) . " <img src='{$loading_image}' /></p>";
}
}
echo json_encode($output);
ewww_image_optimizer_debug_log();
ewwwio_memory(__FUNCTION__);
die;
}
/**
* Manually process an image from the Media Library
*/
function ewww_image_optimizer_manual()
{
ewwwio_debug_message('<b>' . __FUNCTION__ . '()</b>');
global $ewww_defer;
$ewww_defer = false;
// check permissions of current user
$permissions = apply_filters('ewww_image_optimizer_manual_permissions', '');
if (FALSE === current_user_can($permissions)) {
// display error message if insufficient permissions
wp_die(esc_html__('You do not have permission to optimize images.', EWWW_IMAGE_OPTIMIZER_DOMAIN));
}
// make sure we didn't accidentally get to this page without an attachment to work on
if (FALSE === isset($_GET['ewww_attachment_ID'])) {
// display an error message since we don't have anything to work on
wp_die(esc_html__('No attachment ID was provided.', EWWW_IMAGE_OPTIMIZER_DOMAIN));
}
session_write_close();
// store the attachment ID value
$attachment_ID = intval($_GET['ewww_attachment_ID']);
if (empty($_REQUEST['ewww_manual_nonce']) || !wp_verify_nonce($_REQUEST['ewww_manual_nonce'], "ewww-manual-{$attachment_ID}")) {
wp_die(esc_html__('Access denied.', EWWW_IMAGE_OPTIMIZER_DOMAIN));
}
// retrieve the existing attachment metadata
$original_meta = wp_get_attachment_metadata($attachment_ID);
// if the call was to optimize...
if ($_REQUEST['action'] === 'ewww_image_optimizer_manual_optimize') {
// call the optimize from metadata function and store the resulting new metadata
$new_meta = ewww_image_optimizer_resize_from_meta_data($original_meta, $attachment_ID);
} elseif ($_REQUEST['action'] === 'ewww_image_optimizer_manual_restore') {
$new_meta = ewww_image_optimizer_restore_from_meta_data($original_meta, $attachment_ID);
}
global $ewww_attachment;
$ewww_attachment['id'] = $attachment_ID;
$ewww_attachment['meta'] = $new_meta;
add_filter('w3tc_cdn_update_attachment_metadata', 'ewww_image_optimizer_w3tc_update_files');
// update the attachment metadata in the database
wp_update_attachment_metadata($attachment_ID, $new_meta);
ewww_image_optimizer_debug_log();
// store the referring webpage location
$sendback = wp_get_referer();
// sanitize the referring webpage location
$sendback = preg_replace('|[^a-z0-9-~+_.?#=&;,/:]|i', '', $sendback);
// send the user back where they came from
wp_redirect($sendback);
// we are done, nothing to see here
ewwwio_memory(__FUNCTION__);
exit(0);
}
function ewww_image_optimizer_update_saved_file($meta, $ID)
{
global $ewww_debug;
$ewww_debug = "{$ewww_debug} <b>ewww_image_optimizer_update_saved_file()</b><br>";
$meta = ewww_image_optimizer_resize_from_meta_data($meta, $ID);
return $meta;
}
function ewww_image_optimizer_bulk_loop()
{
global $ewww_debug;
// verify that an authorized user has started the optimizer
if (!wp_verify_nonce($_REQUEST['_wpnonce'], 'ewww-image-optimizer-bulk') || !current_user_can('edit_others_posts')) {
wp_die(__('Cheatin’ eh?'));
}
// retrieve the time when the optimizer starts
$started = microtime(true);
// allow 50 seconds for each image (this doesn't include any exec calls, only php processing time)
set_time_limit(50);
// get the attachment ID of the current attachment
$attachment = $_POST['attachment'];
// get the 'bulk attachments' with a list of IDs remaining
$attachments = get_option('ewww_image_optimizer_bulk_attachments');
// do the optimization for the current attachment (including resizes)
$meta = ewww_image_optimizer_resize_from_meta_data(wp_get_attachment_metadata($attachment, true), $attachment);
// output the filename (and path relative to 'uploads' folder
printf("<p>Optimized image: <strong>%s</strong><br>", esc_html($meta['file']));
// tell the user what the results were for the original image
printf("Full size – %s<br>", $meta['ewww_image_optimizer']);
// check to see if there are resized version of the image
if (isset($meta['sizes']) && is_array($meta['sizes'])) {
// cycle through each resize
foreach ($meta['sizes'] as $size) {
// output the results for the current resized version
printf("%s – %s<br>", $size['file'], $size['ewww_image_optimizer']);
}
}
// calculate how much time has elapsed since we started
$elapsed = microtime(true) - $started;
// output how much time has elapsed since we started
echo "Elapsed: " . round($elapsed, 3) . " seconds</p>";
// update the metadata for the current attachment
wp_update_attachment_metadata($attachment, $meta);
// remove the first element fromt the $attachments array
array_shift($attachments);
// store the updated list of attachment IDs back in the 'bulk_attachments' option
update_option('ewww_image_optimizer_bulk_attachments', $attachments);
if (get_site_option('ewww_image_optimizer_debug')) {
echo '<div style="background-color:#ffff99;">' . $ewww_debug . '</div>';
}
die;
}
