/**
* Output buffer callback
*
* @param string $buffer
* @return mixed
*/
function ob_callback(&$buffer)
{
if ($buffer != '' && w3_is_xml($buffer)) {
$domain_url_regexp = w3_get_domain_url_regexp();
$buffer = preg_replace_callback('~(href|src|action|extsrc|asyncsrc|w3tc_load_js\\()=?[\'"]((' . $domain_url_regexp . ')?(/[^\'"]*\\.([a-z-_]+)(\\?[^\'"]*)?))[\'"]~Ui', array(&$this, 'link_replace_callback'), $buffer);
}
return $buffer;
}
/**
* OB callback
*
* @param string $buffer
* @return string
*/
function ob_callback(&$buffer)
{
if ($buffer != '' && w3_is_xml($buffer)) {
if ($this->can_minify2($buffer)) {
/**
* Replace script and style tags
*/
if (function_exists('is_feed') && !is_feed()) {
w3_require_once(W3TC_INC_DIR . '/functions/extract.php');
$head_prepend = '';
$body_prepend = '';
$body_append = '';
$embed_extsrcjs = false;
if ($this->_config->get_boolean('minify.auto')) {
if ($this->_config->get_boolean('minify.js.enable')) {
$ignore_js_files = $this->_config->get_array('minify.reject.files.js');
$embed_type = $this->_config->get_string('minify.js.header.embed_type');
$embed_type = $embed_type == 'extsrc' || $embed_type == 'asyncsrc' ? 'blocking' : $embed_type;
$embed_pos = strpos($buffer, '<!-- W3TC-include-js-head -->');
$buffer = str_replace('<!-- W3TC-include-js-head -->', '', $buffer);
if ($embed_pos === false) {
preg_match('~<head(\\s+[^<>]+)*>~Ui', $buffer, $match, PREG_OFFSET_CAPTURE);
$embed_pos = strlen($match[0][0]) + $match[0][1];
}
$ignore_js_files = array_map('w3_normalize_file', $ignore_js_files);
$files_to_minify = array();
$handled_scripts = array();
$script_tags = w3_extract_js2($buffer);
$previous_file_was_ignored = false;
foreach ($script_tags as $script_tag) {
$tag_pos = strpos($buffer, $script_tag);
$match = array();
preg_match('~<script\\s+[^<>]*src=["\']?([^"\']+)["\']?[^<>]*>\\s*</script>~is', $script_tag, $match);
$file = $match[1];
$file = w3_normalize_file_minify2($file);
$script_len = strlen($script_tag);
if (!$this->_filter_files($file) || in_array($file, $handled_scripts)) {
continue;
}
$handled_scripts[] = $file;
$this->replaced_scripts[] = $file;
if (in_array($file, $ignore_js_files)) {
if ($tag_pos > $embed_pos) {
if ($files_to_minify) {
$script = $this->get_script_custom($files_to_minify, $embed_type);
$buffer = substr_replace($buffer, $script, $embed_pos, 0);
$files_to_minify = array();
$script_len = $script_len + strlen($script);
}
$embed_pos = $embed_pos + $script_len;
$previous_file_was_ignored = true;
}
} else {
$buffer = substr_replace($buffer, '', $tag_pos, $script_len);
if ($embed_pos > $tag_pos) {
$embed_pos -= $script_len;
} elseif ($previous_file_was_ignored) {
$embed_pos = $tag_pos;
}
$files_to_minify[] = $file;
}
}
$script = $this->get_script_custom($files_to_minify, $embed_type);
$buffer = substr_replace($buffer, $script, $embed_pos, 0);
}
if ($this->_config->get_boolean('minify.css.enable')) {
$ignore_css_files = $this->_config->get_array('minify.reject.files.css');
$files_to_minify = array();
$embed_pos = strpos($buffer, '<!-- W3TC-include-css -->');
$buffer = str_replace('<!-- W3TC-include-css -->', '', $buffer);
if ($embed_pos === false) {
preg_match('~<head(\\s+[^<>]+)*>~Ui', $buffer, $match, PREG_OFFSET_CAPTURE);
$embed_pos = strlen($match[0][0]) + $match[0][1];
}
$ignore_css_files = array_map('w3_normalize_file', $ignore_css_files);
$handled_styles = array();
$style_tags = w3_extract_css2($buffer);
$previous_file_was_ignored = false;
foreach ($style_tags as $style_tag_tuple) {
$style_tag = $style_tag_tuple[0];
$tag_pos = strpos($buffer, $style_tag);
$match = array();
$file = $style_tag_tuple[1];
$file = w3_normalize_file_minify2($file);
$style_len = strlen($style_tag);
if (!$this->_filter_files($file) || in_array($file, $handled_styles)) {
continue;
}
$handled_styles[] = $file;
$this->replaced_styles[] = $file;
if (in_array($file, $ignore_css_files)) {
if ($tag_pos > $embed_pos) {
if ($files_to_minify) {
$style = $this->get_style_custom($files_to_minify);
$buffer = substr_replace($buffer, $style, $embed_pos, 0);
$files_to_minify = array();
$style_len = $style_len + strlen($style);
}
$embed_pos = $embed_pos + $style_len;
$previous_file_was_ignored = true;
}
} else {
$buffer = substr_replace($buffer, '', $tag_pos, $style_len);
if ($embed_pos > $tag_pos) {
$embed_pos -= $style_len;
} elseif ($previous_file_was_ignored) {
$embed_pos = $tag_pos;
}
$files_to_minify[] = $file;
}
}
$style = $this->get_style_custom($files_to_minify);
$buffer = substr_replace($buffer, $style, $embed_pos, 0);
}
} else {
if ($this->_config->get_boolean('minify.css.enable') && !in_array('include', $this->printed_styles)) {
$style = $this->get_style_group('include');
if ($style) {
if ($this->_custom_location_does_not_exist('/<!-- W3TC-include-css -->/', $buffer, $style)) {
$head_prepend .= $style;
}
$this->remove_styles_group($buffer, 'include');
}
}
if ($this->_config->get_boolean('minify.js.enable')) {
if (!in_array('include', $this->printed_scripts)) {
$embed_type = $this->_config->get_string('minify.js.header.embed_type');
$script = $this->get_script_group('include', $embed_type);
if ($script) {
$embed_extsrcjs = $embed_type == 'extsrc' || $embed_type == 'asyncsrc' ? true : $embed_extsrcjs;
if ($this->_custom_location_does_not_exist('/<!-- W3TC-include-js-head -->/', $buffer, $script)) {
$head_prepend .= $script;
}
$this->remove_scripts_group($buffer, 'include', $embed_type);
}
}
if (!in_array('include-body', $this->printed_scripts)) {
$embed_type = $this->_config->get_string('minify.js.body.embed_type');
$script = $this->get_script_group('include-body', $embed_type);
if ($script) {
$embed_extsrcjs = $embed_type == 'extsrc' || $embed_type == 'asyncsrc' ? true : $embed_extsrcjs;
if ($this->_custom_location_does_not_exist('/<!-- W3TC-include-js-body-start -->/', $buffer, $script)) {
$body_prepend .= $script;
}
$this->remove_scripts_group($buffer, 'include-body', $embed_type);
}
}
if (!in_array('include-footer', $this->printed_scripts)) {
$embed_type = $this->_config->get_string('minify.js.footer.embed_type');
$script = $this->get_script_group('include-footer', $embed_type);
if ($script) {
$embed_extsrcjs = $embed_type == 'extsrc' || $embed_type == 'asyncsrc' ? true : $embed_extsrcjs;
if ($this->_custom_location_does_not_exist('/<!-- W3TC-include-js-body-end -->/', $buffer, $script)) {
$body_append .= $script;
}
$this->remove_scripts_group($buffer, 'include-footer', $embed_type);
}
}
}
}
if ($head_prepend != '') {
$buffer = preg_replace('~<head(\\s+[^<>]+)*>~Ui', '\\0' . $head_prepend, $buffer, 1);
}
if ($body_prepend != '') {
$buffer = preg_replace('~<body(\\s+[^<>]+)*>~Ui', '\\0' . $body_prepend, $buffer, 1);
}
if ($body_append != '') {
$buffer = preg_replace('~<\\/body>~', $body_append . '\\0', $buffer, 1);
}
if ($embed_extsrcjs) {
$script = "\n<script type=\"text/javascript\">\n" . "var extsrc=null;\n" . '(function(){function j(){if(b&&g){document.write=k;document.writeln=l;var f=document.createElement("span");f.innerHTML=b;g.appendChild(f);b=""}}function d(){j();for(var f=document.getElementsByTagName("script"),c=0;c<f.length;c++){var e=f[c],h=e.getAttribute("asyncsrc");if(h){e.setAttribute("asyncsrc","");var a=document.createElement("script");a.async=!0;a.src=h;document.getElementsByTagName("head")[0].appendChild(a)}if(h=e.getAttribute("extsrc")){e.setAttribute("extsrc","");g=document.createElement("span");e.parentNode.insertBefore(g,e);document.write=function(a){b+=a};document.writeln=function(a){b+=a;b+="\\n"};a=document.createElement("script");a.async=!0;a.src=h;/msie/i.test(navigator.userAgent)&&!/opera/i.test(navigator.userAgent)?a.onreadystatechange=function(){("loaded"==this.readyState||"complete"==this.readyState)&&d()}:-1!=navigator.userAgent.indexOf("Firefox")||"onerror"in a?(a.onload=d,a.onerror=d):(a.onload=d,a.onreadystatechange=d);document.getElementsByTagName("head")[0].appendChild(a);return}}j();document.write=k;document.writeln=l;for(c=0;c<extsrc.complete.funcs.length;c++)extsrc.complete.funcs[c]()}function i(){arguments.callee.done||(arguments.callee.done=!0,d())}extsrc={complete:function(b){this.complete.funcs.push(b)}};extsrc.complete.funcs=[];var k=document.write,l=document.writeln,b="",g="";document.addEventListener&&document.addEventListener("DOMContentLoaded",i,!1);if(/WebKit/i.test(navigator.userAgent))var m=setInterval(function(){/loaded|complete/.test(document.readyState)&&(clearInterval(m),i())},10);window.onload=i})();' . "\n</script>\n";
$buffer = preg_replace('~<head(\\s+[^<>]+)*>~Ui', '\\0' . $script, $buffer, 1);
}
}
/**
* Minify HTML/Feed
*/
if ($this->_config->get_boolean('minify.html.enable')) {
try {
$this->minify_html($buffer);
} catch (Exception $exception) {
$this->error = $exception->getMessage();
}
}
}
if ($this->_config->get_boolean('minify.debug')) {
$buffer .= "\r\n\r\n" . $this->get_debug_info();
}
}
return $buffer;
}
/**
* Output buffering callback
*
* @param string $buffer
* @return string
*/
function ob_callback($buffer)
{
if ($buffer != '') {
if (w3_is_xml($buffer) && $this->_can_cache2()) {
$compression = $this->_get_compression();
$compressions = $this->_get_compressions();
if ($this->_enhanced_mode) {
$is_404 = false;
$headers = array();
} else {
$is_404 = function_exists('is_404') ? is_404() : false;
$headers = $this->_get_cached_headers();
}
$time = time();
$cache =& $this->_get_cache();
foreach ($compressions as $_compression) {
$_page_key = $this->_get_page_key($_SERVER['REQUEST_URI'], $_compression);
/**
* Encode content
*/
switch ($_compression) {
case false:
$_content = $buffer;
break;
case 'gzip':
$_content = gzencode($buffer);
break;
case 'deflate':
$_content = gzdeflate($buffer);
break;
}
/**
* Store cache data
*/
if ($this->_enhanced_mode) {
$cache->set($_page_key, $_content);
} else {
$_data = array('404' => $is_404, 'headers' => $headers, 'time' => $time, 'content' => $_content);
$cache->set($_page_key, $_data, $this->_lifetime);
}
if ($compression == $_compression) {
$page_key = $_page_key;
$buffer = $_content;
}
}
/**
* Calculate content etag
*/
$etag = md5($buffer);
/**
* Send headers
*/
$this->_send_headers($is_404, $time, $etag, $compression, $headers);
/**
* Append debug info
*/
if ($this->_debug) {
$time_total = w3_microtime() - $this->_time_start;
$debug_info = $this->_get_debug_info($page_key, true, '', false, $time_total);
$this->_append_content($buffer, "\r\n\r\n" . $debug_info, $compression);
}
} elseif ($this->_debug) {
/**
* Append debug info
*/
$page_key = $this->_get_page_key($_SERVER['REQUEST_URI'], false);
$time_total = w3_microtime() - $this->_time_start;
$debug_info = $this->_get_debug_info($page_key, false, $this->cache_reject_reason, false, $time_total);
$this->_append_content($buffer, "\r\n\r\n" . $debug_info, false);
}
}
return $buffer;
}
/**
* OB callback
*
* @param string $buffer
* @return string
*/
function ob_callback(&$buffer)
{
if ($buffer != '' && w3_is_xml($buffer)) {
if ($this->can_minify2($buffer)) {
/**
* Replace script and style tags
*/
if (function_exists('is_feed') && !is_feed()) {
$head_prepend = '';
$body_prepend = '';
$body_append = '';
if ($this->_config->get_boolean('minify.auto')) {
if ($this->_config->get_boolean('minify.css.enable')) {
$files_css = $this->get_files_css($buffer);
$style = $this->get_style_custom($files_css);
if ($style) {
$head_prepend .= $style;
$this->remove_styles($buffer, $files_css);
}
}
if ($this->_config->get_boolean('minify.js.enable')) {
$files_js = $this->get_files_js($buffer);
$script = $this->get_script_custom($files_js);
if ($script) {
$head_prepend .= $script;
$this->remove_scripts($buffer, $files_js);
}
}
} else {
if ($this->_config->get_boolean('minify.css.enable') && !in_array('include', $this->printed_styles)) {
$style = $this->get_style_group('include');
if ($style) {
$head_prepend .= $style;
$this->remove_styles_group($buffer, 'include');
}
}
if ($this->_config->get_boolean('minify.js.enable')) {
if (!in_array('include', $this->printed_scripts)) {
$script = $this->get_script_group('include');
if ($script) {
$head_prepend .= $script;
$this->remove_scripts_group($buffer, 'include');
}
}
if (!in_array('include-nb', $this->printed_scripts)) {
$script = $this->get_script_group('include-nb');
if ($script) {
$head_prepend .= $script;
$this->remove_scripts_group($buffer, 'include-nb');
}
}
if (!in_array('include-body', $this->printed_scripts)) {
$script = $this->get_script_group('include-body');
if ($script) {
$body_prepend .= $script;
$this->remove_scripts_group($buffer, 'include-body');
}
}
if (!in_array('include-body-nb', $this->printed_scripts)) {
$script = $this->get_script_group('include-body-nb');
if ($script) {
$body_prepend .= $script;
$this->remove_scripts_group($buffer, 'include-body-nb');
}
}
if (!in_array('include-footer', $this->printed_scripts)) {
$script = $this->get_script_group('include-footer');
if ($script) {
$body_append .= $script;
$this->remove_scripts_group($buffer, 'include-footer');
}
}
if (!in_array('include-footer-nb', $this->printed_scripts)) {
$script = $this->get_script_group('include-footer-nb');
if ($script) {
$body_append .= $script;
$this->remove_scripts_group($buffer, 'include-footer-nb');
}
}
}
}
if ($head_prepend != '') {
$buffer = preg_replace('~<head(\\s+[^<>]+)*>~Ui', '\\0' . $head_prepend, $buffer, 1);
}
if ($body_prepend != '') {
$buffer = preg_replace('~<body(\\s+[^<>]+)*>~Ui', '\\0' . $body_prepend, $buffer, 1);
}
if ($body_append != '') {
$buffer = preg_replace('~<\\/body>~', $body_append . '\\0', $buffer, 1);
}
}
/**
* Minify HTML/Feed
*/
if ($this->_config->get_boolean('minify.html.enable')) {
try {
$this->minify_html($buffer);
} catch (Exception $exception) {
$this->error = $exception->getMessage();
}
}
}
if ($this->_config->get_boolean('minify.debug')) {
$buffer .= "\r\n\r\n" . $this->get_debug_info();
}
}
return $buffer;
}
/**
* OB Callback
*
* @param string $buffer
* @return string
*/
function ob_callback(&$buffer)
{
if ($buffer != '' && w3_is_xml($buffer)) {
if ($this->can_cdn2($buffer)) {
$regexps = array();
$site_path = w3_get_site_path();
$domain_url_regexp = w3_get_domain_url_regexp();
if ($this->_config->get_boolean('cdn.uploads.enable')) {
require_once W3TC_INC_DIR . '/functions/http.php';
$upload_info = w3_upload_info();
if ($upload_info) {
if (preg_match('~' . $domain_url_regexp . '~i', $upload_info['baseurl'])) {
$regexps[] = '~(["\'])((' . $domain_url_regexp . ')?(' . w3_preg_quote($upload_info['baseurlpath']) . '([^"\'>]+)))~';
} else {
$regexps[] = '~(["\'])((' . w3_preg_quote($upload_info['baseurl']) . ')(([^"\'>]+)))~';
}
}
}
if ($this->_config->get_boolean('cdn.includes.enable')) {
$mask = $this->_config->get_string('cdn.includes.files');
if ($mask != '') {
$regexps[] = '~(["\'])((' . $domain_url_regexp . ')?(' . w3_preg_quote($site_path . WPINC) . '/(' . $this->get_regexp_by_mask($mask) . ')))~';
}
}
if ($this->_config->get_boolean('cdn.theme.enable')) {
$theme_dir = preg_replace('~' . $domain_url_regexp . '~i', '', get_theme_root_uri());
$mask = $this->_config->get_string('cdn.theme.files');
if ($mask != '') {
$regexps[] = '~(["\'])((' . $domain_url_regexp . ')?(' . w3_preg_quote($theme_dir) . '/(' . $this->get_regexp_by_mask($mask) . ')))~';
}
}
if ($this->_config->get_boolean('cdn.minify.enable')) {
if ($this->_config->get_boolean('minify.auto')) {
$regexps[] = '~(["\'])((' . $domain_url_regexp . ')?(' . w3_preg_quote($site_path . W3TC_CONTENT_MINIFY_DIR_NAME) . '/[a-f0-9]+\\.[a-f0-9]+\\.(css|js)))~U';
} else {
$regexps[] = '~(["\'])((' . $domain_url_regexp . ')?(' . w3_preg_quote($site_path . W3TC_CONTENT_MINIFY_DIR_NAME) . '/[a-f0-9]+/.+\\.include(-(footer|body))?(-nb)?\\.[a-f0-9]+\\.(css|js)))~U';
}
}
if ($this->_config->get_boolean('cdn.custom.enable')) {
$masks = $this->_config->get_array('cdn.custom.files');
$masks = array_map('w3_parse_path', $masks);
if (count($masks)) {
$mask_regexps = array();
foreach ($masks as $mask) {
if ($mask != '') {
$mask = w3_normalize_file($mask);
$mask_regexps[] = $this->get_regexp_by_mask($mask);
}
}
$regexps[] = '~(["\'])((' . $domain_url_regexp . ')?(' . w3_preg_quote($site_path) . '(' . implode('|', $mask_regexps) . ')))~i';
}
}
foreach ($regexps as $regexp) {
$buffer = preg_replace_callback($regexp, array(&$this, 'link_replace_callback'), $buffer);
}
}
if ($this->_config->get_boolean('cdn.debug')) {
$buffer .= "\r\n\r\n" . $this->get_debug_info();
}
}
return $buffer;
}
/**
* Output buffering callback
*
* @param string $buffer
* @return string
*/
function ob_callback(&$buffer)
{
if ($buffer != '' && w3_is_xml($buffer)) {
$buffer .= "\r\n\r\n" . $this->_get_debug_info();
}
return $buffer;
}
/**
* Output buffering callback
*
* @param string $buffer
* @return string
*/
function ob_callback(&$buffer)
{
global $wpdb;
if ($buffer != '' && w3_is_xml($buffer)) {
if (w3_is_database_error($buffer)) {
@header('HTTP/1.1 503 Service Unavailable');
} else {
/**
* Replace links for preview mode
*/
if (w3_is_preview_mode() && isset($_SERVER['HTTP_USER_AGENT']) && $_SERVER['HTTP_USER_AGENT'] != W3TC_POWERED_BY) {
$domain_url_regexp = w3_get_domain_url_regexp();
$buffer = preg_replace_callback('~(href|src|action)=([\'"])(' . $domain_url_regexp . ')?(/[^\'"]*)~', array(&$this, 'link_replace_callback'), $buffer);
}
/**
* Add footer comment
*/
$date = date_i18n('Y-m-d H:i:s');
$host = !empty($_SERVER['SERVER_NAME']) ? $_SERVER['SERVER_NAME'] : 'localhost';
if ($this->is_supported()) {
$buffer .= sprintf("\r\n<!-- Served from: %s @ %s by W3 Total Cache -->", w3_escape_comment($host), $date);
} else {
$strings = array();
if ($this->_config->get_boolean('minify.enabled') && !$this->_config->get_boolean('minify.debug')) {
require_once W3TC_LIB_W3_DIR . '/Plugin/Minify.php';
$w3_plugin_minify =& W3_Plugin_Minify::instance();
$strings[] = sprintf("Minified using %s%s", w3_get_engine_name($this->_config->get_string('minify.engine')), $w3_plugin_minify->minify_reject_reason != '' ? sprintf(' (%s)', $w3_plugin_minify->minify_reject_reason) : '');
}
if ($this->_config->get_boolean('pgcache.enabled') && !$this->_config->get_boolean('pgcache.debug')) {
require_once W3TC_LIB_W3_DIR . '/PgCache.php';
$w3_pgcache =& W3_PgCache::instance();
$strings[] = sprintf("Page Caching using %s%s", w3_get_engine_name($this->_config->get_string('pgcache.engine')), $w3_pgcache->cache_reject_reason != '' ? sprintf(' (%s)', $w3_pgcache->cache_reject_reason) : '');
}
if ($this->_config->get_boolean('dbcache.enabled') && !$this->_config->get_boolean('dbcache.debug') && is_a($wpdb, 'W3_Db')) {
$append = is_user_logged_in() ? ' (user is logged in)' : '';
if ($wpdb->query_hits) {
$strings[] = sprintf("Database Caching %d/%d queries in %.3f seconds using %s%s", $wpdb->query_hits, $wpdb->query_total, $wpdb->time_total, w3_get_engine_name($this->_config->get_string('dbcache.engine')), $append);
} else {
$strings[] = sprintf("Database Caching using %s%s", w3_get_engine_name($this->_config->get_string('dbcache.engine')), $append);
}
}
if ($this->_config->get_boolean('objectcache.enabled') && !$this->_config->get_boolean('objectcache.debug')) {
require_once W3TC_LIB_W3_DIR . '/ObjectCache.php';
$w3_objectcache =& W3_ObjectCache::instance();
$strings[] = sprintf("Object Caching %d/%d objects using %s", $w3_objectcache->cache_hits, $w3_objectcache->cache_total, w3_get_engine_name($this->_config->get_string('objectcache.engine')));
}
if ($this->_config->get_boolean('cdn.enabled') && !$this->_config->get_boolean('cdn.debug')) {
require_once W3TC_LIB_W3_DIR . '/Plugin/Cdn.php';
$w3_plugin_cdn =& W3_Plugin_Cdn::instance();
$cdn =& $w3_plugin_cdn->get_cdn();
$via = $cdn->get_via();
$strings[] = sprintf("Content Delivery Network via %s%s", $via ? $via : 'N/A', $w3_plugin_cdn->cdn_reject_reason != '' ? sprintf(' (%s)', $w3_plugin_cdn->cdn_reject_reason) : '');
}
$buffer .= "\r\n<!-- Performance optimized by W3 Total Cache. Learn more: http://www.w3-edge.com/wordpress-plugins/\r\n";
if (count($strings)) {
$buffer .= "\r\n" . implode("\r\n", $strings) . "\r\n";
}
$buffer .= sprintf("\r\nServed from: %s @ %s -->", w3_escape_comment($host), $date);
}
}
}
return $buffer;
}
/**
* If content can handle HTML comments, can disable printout per request using filter 'w3tc_can_print_comment'
* @param $buffer
* @return bool
*/
function w3_can_print_comment(&$buffer)
{
if (function_exists('apply_filters')) {
return apply_filters('w3tc_can_print_comment', w3_is_xml($buffer) && !defined('DOING_AJAX'));
}
return w3_is_xml($buffer) && !defined('DOING_AJAX');
}
/**
* OB Callback
*
* @param string $buffer
* @return string
*/
function ob_callback(&$buffer)
{
if ($buffer != '' && w3_is_xml($buffer)) {
if ($this->can_cdn2($buffer)) {
$regexps = array();
$site_path = w3_get_site_path();
$domain_url_regexp = w3_get_domain_url_regexp();
if ($this->_config->get_boolean('cdn.uploads.enable')) {
w3_require_once(W3TC_INC_DIR . '/functions/http.php');
$upload_info = w3_upload_info();
if ($upload_info) {
if (preg_match('~' . $domain_url_regexp . '~i', $upload_info['baseurl'])) {
$regexps[] = '~(["\'(])\\s*((' . $domain_url_regexp . ')?(' . w3_preg_quote($upload_info['baseurlpath']) . '([^"\')>]+)))~';
} else {
$parsed = @parse_url($upload_info['baseurl']);
$upload_url_domain_regexp = isset($parsed['host']) ? w3_get_url_regexp($parsed['scheme'] . '://' . $parsed['host']) : '';
$baseurlpath = isset($parsed['path']) ? rtrim($parsed['path'], '/') : '';
if ($baseurlpath) {
$regexps[] = '~(["\'])\\s*((' . $upload_url_domain_regexp . ')?(' . w3_preg_quote($baseurlpath) . '([^"\'>]+)))~';
} else {
$regexps[] = '~(["\'])\\s*((' . $upload_url_domain_regexp . ')([^"\'>]+))~';
}
}
}
}
if ($this->_config->get_boolean('cdn.includes.enable')) {
$mask = $this->_config->get_string('cdn.includes.files');
if ($mask != '') {
$regexps[] = '~(["\'(])\\s*((' . $domain_url_regexp . ')?(' . w3_preg_quote($site_path . WPINC) . '/(' . $this->get_regexp_by_mask($mask) . ')))~';
}
}
if ($this->_config->get_boolean('cdn.theme.enable')) {
$theme_dir = preg_replace('~' . $domain_url_regexp . '~i', '', get_theme_root_uri());
$mask = $this->_config->get_string('cdn.theme.files');
if ($mask != '') {
$regexps[] = '~(["\'(])\\s*((' . $domain_url_regexp . ')?(' . w3_preg_quote($theme_dir) . '/(' . $this->get_regexp_by_mask($mask) . ')))~';
}
}
if ($this->_config->get_boolean('cdn.custom.enable')) {
$masks = $this->_config->get_array('cdn.custom.files');
$masks = array_map('w3_parse_path', $masks);
if (count($masks)) {
$mask_regexps = array();
foreach ($masks as $mask) {
if ($mask != '') {
$mask = w3_normalize_file($mask);
$mask_regexps[] = $this->get_regexp_by_mask($mask);
}
}
$regexps[] = '~(["\'(])\\s*((' . $domain_url_regexp . ')?(' . w3_preg_quote($site_path) . '(' . implode('|', $mask_regexps) . ')))~i';
}
}
foreach ($regexps as $regexp) {
$buffer = preg_replace_callback($regexp, array(&$this, 'link_replace_callback'), $buffer);
}
if ($this->_config->get_boolean('cdn.minify.enable')) {
if ($this->_config->get_boolean('minify.auto')) {
$regexp = '~(["\'(])\\s*' . $this->_minify_url_regexp('/[a-zA-Z0-9-_]+\\.(css|js)') . '~U';
if (w3_is_cdn_mirror($this->_config->get_string('cdn.engine'))) {
$processor = 'link_replace_callback';
} else {
$processor = 'minify_auto_pushcdn_link_replace_callback';
}
} else {
$regexp = '~(["\'(])\\s*' . $this->_minify_url_regexp('/[a-z0-9]+/.+\\.include(-(footer|body))?(-nb)?\\.[a-f0-9]+\\.(css|js)') . '~U';
$processor = 'link_replace_callback';
}
$buffer = preg_replace_callback($regexp, array(&$this, $processor), $buffer);
}
}
if ($this->_config->get_boolean('cdn.debug')) {
$buffer .= "\r\n\r\n" . $this->get_debug_info();
}
}
return $buffer;
}
/**
* OB callback
*
* @param string $buffer
* @return string
*/
function ob_callback($buffer)
{
if ($buffer != '' && w3_is_xml($buffer) && $this->can_minify2()) {
$head_prepend = '';
$body_append = '';
if ($this->_config->get_boolean('minify.css.enable') && !in_array('include', $this->printed_styles)) {
$head_prepend .= $this->get_styles('include');
}
if ($this->_config->get_boolean('minify.js.enable')) {
if (!in_array('include', $this->printed_scripts)) {
$head_prepend .= $this->get_scripts('include');
}
if (!in_array('include-nb', $this->printed_scripts)) {
$head_prepend .= $this->get_scripts('include-nb');
}
if (!in_array('include-footer', $this->printed_scripts)) {
$body_append .= $this->get_scripts('include-footer');
}
if (!in_array('include-footer-nb', $this->printed_scripts)) {
$body_append .= $this->get_scripts('include-footer-nb');
}
}
if ($head_prepend != '') {
$buffer = preg_replace('~<head(\\s+[^<>]+)*>~Ui', '\\0' . $head_prepend, $buffer, 1);
}
if ($body_append != '') {
$buffer = preg_replace('~<\\/body>~', $body_append . '\\0', $buffer, 1);
}
$buffer = $this->clean($buffer);
if ($this->_config->get_boolean('minify.debug')) {
$buffer .= "\r\n\r\n" . $this->get_debug_info();
}
}
return $buffer;
}
/**
* Output buffering callback
*
* @param string $buffer
* @return string
*/
function ob_callback(&$buffer)
{
if ($buffer != '' && w3_is_xml($buffer)) {
$compression = false;
$has_dynamic = $this->_has_dynamic($buffer);
$can_cache = $this->_can_cache2($buffer);
if ($can_cache) {
$mobile_group = $this->_get_mobile_group();
$referrer_group = $this->_get_referrer_group();
$encryption = $this->_get_encryption();
$compression = $this->_get_compression();
/**
* Don't use compression for debug mode or dynamic tags
* because we need to modify buffer before send it to client
*/
$raw = $this->_debug || $has_dynamic;
if ($raw) {
$compressions = array(false);
} else {
$compressions = $this->_get_compressions();
}
if ($this->_enhanced_mode) {
$is_404 = false;
$headers = array();
} else {
$is_404 = function_exists('is_404') ? is_404() : false;
$headers = $this->_get_cached_headers();
}
$time = time();
$cache =& $this->_get_cache();
/**
* Store different versions of cache
*/
$buffers = array();
foreach ($compressions as $_compression) {
$_page_key = $this->_get_page_key($this->_request_uri, $mobile_group, $referrer_group, $encryption, $_compression);
/**
* Compress content
*/
$buffers[$_compression] = $buffer;
$this->_compress($buffers[$_compression], $_compression);
/**
* Store cache data
*/
if ($this->_enhanced_mode) {
$cache->set($_page_key, $buffers[$_compression]);
} else {
$_data = array('404' => $is_404, 'headers' => $headers, 'time' => $time, 'content' => &$buffers[$_compression]);
$cache->set($_page_key, $_data, $this->_lifetime);
}
}
/**
* Change buffer if using compression
*/
if ($compression && isset($buffers[$compression])) {
$buffer =& $buffers[$compression];
}
/**
* Calculate content etag
*/
$etag = md5($buffer);
/**
* Send headers
*/
$this->_send_headers($is_404, $time, $etag, $compression, $headers);
if ($raw) {
if ($this->_debug) {
/**
* Set page key for debug
*/
$this->_page_key = $this->_get_page_key($this->_request_uri, $mobile_group, $referrer_group, $encryption, $compression);
/**
* Append debug info
*/
$time_total = w3_microtime() - $this->_time_start;
$debug_info = $this->_get_debug_info(true, '', false, $time_total);
$buffer .= "\r\n\r\n" . $debug_info;
}
/**
* Don't use shutdown function below
*/
if (!$has_dynamic) {
$this->_compress($buffer, $compression);
}
}
} elseif ($this->_debug) {
$mobile_group = $this->_get_mobile_group();
$referrer_group = $this->_get_referrer_group();
$encryption = $this->_get_encryption();
/**
* Set page key for debug
*/
$this->_page_key = $this->_get_page_key($this->_request_uri, $mobile_group, $referrer_group, $encryption, $compression);
/**
* Append debug info
*/
$time_total = w3_microtime() - $this->_time_start;
$debug_info = $this->_get_debug_info(false, $this->cache_reject_reason, false, $time_total);
$buffer .= "\r\n\r\n" . $debug_info;
}
/**
* We can't capture output in ob_callback
* so we use shutdown function
*/
if ($has_dynamic) {
$this->_shutdown_buffer = $buffer;
$this->_shutdown_compression = $compression;
$buffer = '';
register_shutdown_function(array(&$this, 'shutdown'));
}
}
return $buffer;
}
/**
* Output buffering callback
*
* @param string $buffer
* @return string
*/
function ob_callback(&$buffer)
{
global $wpdb;
if ($buffer != '' && w3_is_xml($buffer)) {
if (w3_is_database_error($buffer)) {
status_header(503);
} else {
/**
* Replace links for preview mode
*/
if (w3_is_preview_mode() && isset($_SERVER['HTTP_USER_AGENT']) && $_SERVER['HTTP_USER_AGENT'] != W3TC_POWERED_BY) {
$domain_url_regexp = w3_get_domain_url_regexp();
$buffer = preg_replace_callback('~(href|src|action)=([\'"])(' . $domain_url_regexp . ')?(/[^\'"]*)~', array(&$this, 'link_replace_callback'), $buffer);
}
/**
* Add footer comment
*/
$date = date_i18n('Y-m-d H:i:s');
$host = !empty($_SERVER['SERVER_NAME']) ? $_SERVER['SERVER_NAME'] : 'localhost';
if ($this->_config->get_string('common.support') != '' || $this->_config->get_boolean('common.tweeted')) {
$buffer .= sprintf("\r\n<!-- Served from: %s @ %s by W3 Total Cache -->", w3_escape_comment($host), $date);
} else {
$strings = array();
if ($this->_config->get_boolean('minify.enabled') && !$this->_config->get_boolean('minify.debug')) {
$w3_plugin_minify = w3_instance('W3_Plugin_Minify');
$strings[] = sprintf("Minified using %s%s", w3_get_engine_name($this->_config->get_string('minify.engine')), $w3_plugin_minify->minify_reject_reason != '' ? sprintf(' (%s)', $w3_plugin_minify->minify_reject_reason) : '');
}
if ($this->_config->get_boolean('pgcache.enabled') && !$this->_config->get_boolean('pgcache.debug')) {
$w3_pgcache = w3_instance('W3_PgCache');
$strings[] = sprintf("Page Caching using %s%s", w3_get_engine_name($this->_config->get_string('pgcache.engine')), $w3_pgcache->cache_reject_reason != '' ? sprintf(' (%s)', $w3_pgcache->cache_reject_reason) : '');
}
if ($this->_config->get_boolean('dbcache.enabled') && !$this->_config->get_boolean('dbcache.debug')) {
$db = w3_instance('W3_DbCache');
$append = !is_null($db->cache_reject_reason) ? sprintf(' (%s)', $db->cache_reject_reason) : '';
if ($db->query_hits) {
$strings[] = sprintf("Database Caching %d/%d queries in %.3f seconds using %s%s", $db->query_hits, $db->query_total, $db->time_total, w3_get_engine_name($this->_config->get_string('dbcache.engine')), $append);
} else {
$strings[] = sprintf("Database Caching using %s%s", w3_get_engine_name($this->_config->get_string('dbcache.engine')), $append);
}
}
if (w3_is_dbcluster()) {
$db_cluster = w3_instance('W3_Enterprise_DbCluster');
$strings[] = $db_cluster->status_message();
}
if ($this->_config->get_boolean('objectcache.enabled') && !$this->_config->get_boolean('objectcache.debug')) {
$w3_objectcache = w3_instance('W3_ObjectCache');
$append = $w3_objectcache->cache_reject_reason != '' ? sprintf(' (%s)', $w3_objectcache->cache_reject_reason) : '';
$strings[] = sprintf("Object Caching %d/%d objects using %s%s", $w3_objectcache->cache_hits, $w3_objectcache->cache_total, w3_get_engine_name($this->_config->get_string('objectcache.engine')), $append);
}
if ($this->_config->get_boolean('fragmentcache.enabled') && !$this->_config->get_boolean('fragmentcache.debug')) {
$w3_fragmentcache = w3_instance('W3_Pro_FragmentCache');
$append = $w3_fragmentcache->cache_reject_reason != '' ? sprintf(' (%s)', $w3_fragmentcache->cache_reject_reason) : '';
$strings[] = sprintf("Fragment Caching %d/%d fragments using %s%s", $w3_fragmentcache->cache_hits, $w3_fragmentcache->cache_total, w3_get_engine_name($this->_config->get_string('fragmentcache.engine')), $append);
}
if ($this->_config->get_boolean('cdn.enabled') && !$this->_config->get_boolean('cdn.debug')) {
$w3_plugin_cdn = w3_instance('W3_Plugin_Cdn');
$w3_plugin_cdncommon = w3_instance('W3_Plugin_CdnCommon');
$cdn =& $w3_plugin_cdncommon->get_cdn();
$via = $cdn->get_via();
$strings[] = sprintf("Content Delivery Network via %s%s", $via ? $via : 'N/A', $w3_plugin_cdn->cdn_reject_reason != '' ? sprintf(' (%s)', $w3_plugin_cdn->cdn_reject_reason) : '');
}
if ($this->_config->get_boolean('newrelic.enabled')) {
$w3_newrelic = w3_instance('W3_Plugin_NewRelic');
$append = $w3_newrelic->newrelic_reject_reason != '' ? sprintf(' (%s)', $w3_newrelic->newrelic_reject_reason) : '';
$strings[] = sprintf(__("Application Monitoring using New Relic%s", 'w3-total-cache'), $append);
}
$buffer .= "\r\n<!-- Performance optimized by W3 Total Cache. Learn more: http://www.w3-edge.com/wordpress-plugins/\r\n";
if (count($strings)) {
$buffer .= "\r\n" . implode("\r\n", $strings) . "\r\n";
}
$buffer .= sprintf("\r\n Served from: %s @ %s by W3 Total Cache -->", w3_escape_comment($host), $date);
}
if ($this->is_debugging()) {
if ($this->_config->get_boolean('dbcache.enabled') && $this->_config->get_boolean('dbcache.debug')) {
$db = w3_instance('W3_DbCache');
$buffer .= "\r\n\r\n" . $db->_get_debug_info();
}
if ($this->_config->get_boolean('objectcache.enabled') && $this->_config->get_boolean('objectcache.debug')) {
$w3_objectcache = w3_instance('W3_ObjectCache');
$buffer .= "\r\n\r\n" . $w3_objectcache->_get_debug_info();
}
if ($this->_config->get_boolean('fragmentcache.enabled') && $this->_config->get_boolean('fragmentcache.debug')) {
$w3_fragmentcache = w3_instance('W3_Pro_FragmentCache');
$buffer .= "\r\n\r\n" . $w3_fragmentcache->_get_debug_info();
}
}
}
}
return $buffer;
}
/**
* OB Callback
*
* @param string $buffer
* @return string
*/
function ob_callback($buffer)
{
if ($buffer != '' && w3_is_xml($buffer)) {
$regexps = array();
$upload_info = w3_upload_info();
$site_url_regexp = w3_get_site_url_regexp();
if ($upload_info) {
$regexps[] = '~(["\'])((' . $site_url_regexp . ')?/?(' . w3_preg_quote($upload_info['upload_url']) . '[^"\'>]+))~';
}
if ($this->_config->get_boolean('cdn.includes.enable')) {
$mask = $this->_config->get_string('cdn.includes.files');
if ($mask != '') {
$regexps[] = '~(["\'])((' . $site_url_regexp . ')?/?(' . w3_preg_quote(WPINC) . '/(' . $this->get_regexp_by_mask($mask) . ')))~';
}
}
if ($this->_config->get_boolean('cdn.theme.enable')) {
$theme_dir = preg_replace('~' . $site_url_regexp . '~i', '', get_stylesheet_directory_uri());
$mask = $this->_config->get_string('cdn.theme.files');
if ($mask != '') {
$regexps[] = '~(["\'])((' . $site_url_regexp . ')?/?(' . w3_preg_quote($theme_dir) . '/(' . $this->get_regexp_by_mask($mask) . ')))~';
}
}
if ($this->_config->get_boolean('cdn.minify.enable')) {
$regexps[] = '~(["\'])((' . $site_url_regexp . ')?/?(' . w3_preg_quote(W3TC_CONTENT_MINIFY_DIR_NAME) . '/[a-z0-9-_]+\\.include(-footer)?(-nb)?\\.(css|js)))~';
}
if ($this->_config->get_boolean('cdn.custom.enable')) {
$masks = $this->_config->get_array('cdn.custom.files');
if (count($masks)) {
$mask_regexps = array();
foreach ($masks as $mask) {
if ($mask != '') {
$mask = w3_normalize_file($mask);
$mask_regexps[] = $this->get_regexp_by_mask($mask);
}
}
$regexps[] = '~(["\'])((' . $site_url_regexp . ')?/?(' . implode('|', $mask_regexps) . '))~i';
}
}
foreach ($regexps as $regexp) {
$buffer = preg_replace_callback($regexp, array(&$this, 'link_replace_callback'), $buffer);
}
if ($this->_config->get_boolean('cdn.debug')) {
$buffer .= "\r\n\r\n" . $this->get_debug_info();
}
}
return $buffer;
}
/**
* Output buffering callback
*
* @param string $buffer
* @return string
*/
function ob_callback($buffer)
{
global $wpdb;
if ($buffer != '' && w3_is_xml($buffer)) {
$date = date('Y-m-d H:i:s');
$host = !empty($_SERVER['SERVER_NAME']) ? $_SERVER['SERVER_NAME'] : 'localhost';
if ($this->is_supported()) {
$buffer .= sprintf("\r\n<!-- Served from: %s @ %s by W3 Total Cache -->", $host, $date);
} else {
$buffer .= "\r\n<!-- Performance optimized by W3 Total Cache. Learn more: http://www.w3-edge.com/wordpress-plugins/\r\n\r\n";
if ($this->_config->get_boolean('minify.enabled')) {
require_once W3TC_LIB_W3_DIR . '/Plugin/Minify.php';
$w3_plugin_minify =& W3_Plugin_Minify::instance();
$buffer .= sprintf("Minified using %s%s\r\n", w3_get_engine_name($this->_config->get_string('minify.engine')), $w3_plugin_minify->minify_reject_reason != '' ? sprintf(' (%s)', $w3_plugin_minify->minify_reject_reason) : '');
}
if ($this->_config->get_boolean('pgcache.enabled')) {
require_once W3TC_LIB_W3_DIR . '/PgCache.php';
$w3_pgcache =& W3_PgCache::instance();
$buffer .= sprintf("Page Caching using %s%s\r\n", w3_get_engine_name($this->_config->get_string('pgcache.engine')), $w3_pgcache->cache_reject_reason != '' ? sprintf(' (%s)', $w3_pgcache->cache_reject_reason) : '');
}
if ($this->_config->get_boolean('dbcache.enabled') && is_a($wpdb, 'W3_Db')) {
$append = is_user_logged_in() ? ' (user is logged in)' : '';
if ($wpdb->query_hits) {
$buffer .= sprintf("Database Caching %d/%d queries in %.3f seconds using %s%s\r\n", $wpdb->query_hits, $wpdb->query_total, $wpdb->time_total, w3_get_engine_name($this->_config->get_string('dbcache.engine')), $append);
} else {
$buffer .= sprintf("Database Caching using %s%s\r\n", w3_get_engine_name($this->_config->get_string('dbcache.engine')), $append);
}
}
if ($this->_config->get_boolean('cdn.enabled')) {
require_once W3TC_LIB_W3_DIR . '/Plugin/Cdn.php';
$w3_plugin_cdn =& W3_Plugin_Cdn::instance();
$cdn =& $w3_plugin_cdn->get_cdn();
$via = $cdn->get_via();
$buffer .= sprintf("Content Delivery Network via %s%s\r\n", $via ? $via : 'N/A', $w3_plugin_cdn->cdn_reject_reason != '' ? sprintf(' (%s)', $w3_plugin_cdn->cdn_reject_reason) : '');
}
$buffer .= sprintf("\r\nServed from: %s @ %s -->", $host, $date);
}
}
return $buffer;
}
/**
* OB callback
*
* @param string $buffer
* @return string
*/
function ob_callback($buffer)
{
if ($buffer != '' && w3_is_xml($buffer)) {
$head_prepend = '';
if ($this->_config->get_boolean('minify.css.enable')) {
$head_prepend .= $this->get_styles('include');
}
if ($this->_config->get_boolean('minify.js.enable')) {
$head_prepend .= $this->get_scripts('include') . $this->get_scripts('include-nb');
}
if (!empty($head_prepend)) {
$buffer = preg_replace('~<head(\\s+[^<>]+)*>~Ui', '\\0' . $head_prepend, $buffer, 1);
}
$buffer = $this->clean($buffer);
if ($this->_config->get_boolean('minify.debug')) {
$buffer .= "\r\n\r\n" . $this->get_debug_info();
}
}
return $buffer;
}
