public function cron()
{
$this->load->model('tool/nitro');
$this->model_tool_nitro->loadCore();
if (!$this->model_tool_nitro->from_cron_url()) {
return;
}
if (!getNitroPersistence('CRON.Remote.Delete')) {
return;
}
$tasks = array();
$now = time();
if (getNitroPersistence('CRON.Remote.Delete')) {
$period = getNitroPersistence('PageCache.ExpireTime');
$period = !empty($period) ? $period : NITRO_PAGECACHE_TIME;
$tasks[] = '- Delete files older than ' . date('Y-m-d H:i:s', $now - $period);
cleanNitroCacheFolders('index.html', $period);
}
if (getNitroPersistence('CRON.Remote.SendEmail')) {
$subject = 'NitroPack Remote CRON job';
$message = 'Time of execution: ' . date('Y-m-d H:i:s', $now) . PHP_EOL . PHP_EOL;
$message .= 'Executed tasks: ' . PHP_EOL . implode(PHP_EOL, $tasks) . PHP_EOL . PHP_EOL;
sendNitroMail(getOpenCartSetting('config_email'), $subject, $message);
}
}
if (!empty($data)) {
$urls = json_decode($data);
$total = count($urls);
$currency = strtoupper(getOpenCartSetting('config_currency'));
$language = getOpenCartSetting('config_language');
foreach ($urls as $target) {
$ch = curl_init($target);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, false);
curl_setopt($ch, CURLOPT_USERAGENT, 'Nitro-Precache');
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$headers = array('Nitro-Precache: 1', 'Cache-Control: no-cache', 'Pragma: no-cache', 'Connection: keep-alive');
$cookie = 'currency=' . $currency . '; language=' . $language . ';';
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_COOKIE, $cookie);
curl_exec($ch);
curl_close($ch);
}
$precache_progress .= ' Precached ' . $total . ' pages';
} else {
$precache_progress .= ' Pre-cache data not found. URL: ' . $url . PHP_EOL;
}
$tasks[] = $precache_progress;
}
if (getNitroPersistence('CRON.Local.SendEmail')) {
$subject = 'NitroPack Local CRON job';
$message = 'Time of execution: ' . date('Y-m-d H:i:s', $now) . PHP_EOL . PHP_EOL;
$message .= 'Executed tasks: ' . PHP_EOL . implode(PHP_EOL, $tasks) . PHP_EOL . PHP_EOL;
sendNitroMail(getOpenCartSetting('config_email'), $subject, $message);
}
function sendNitroMail($to, $subject, $message)
{
require_once realpath(DIR_SYSTEM . 'library/mail.php');
$mail = new Mail();
$mail->protocol = getOpenCartSetting('config_mail_protocol');
$mail->parameter = getOpenCartSetting('config_mail_parameter');
$mail->hostname = getOpenCartSetting('config_smtp_host');
$mail->username = getOpenCartSetting('config_smtp_username');
$mail->password = getOpenCartSetting('config_smtp_password');
$mail->port = getOpenCartSetting('config_smtp_port');
$mail->timeout = getOpenCartSetting('config_smtp_timeout');
$mail->setTo($to);
$mail->setFrom(getOpenCartSetting('config_email'));
$mail->setSender(getOpenCartSetting('config_name'));
$mail->setSubject(html_entity_decode($subject, ENT_QUOTES, 'UTF-8'));
$mail->setText(html_entity_decode($message, ENT_QUOTES, 'UTF-8'));
$mail->send();
}
function extractHardcodedResources($content)
{
if (!isNitroEnabled() || !getNitroPersistence('Mini.Enabled')) {
return $content;
}
$settings = getNitroPersistence();
$cssExclude = array();
$jsExclude = array();
$jsLineExclude = array();
$cssExtractCheckPassed = false;
$jsExtractCheckPassed = false;
require_once DIR_SYSTEM . 'nitro' . DIRECTORY_SEPARATOR . 'core' . DIRECTORY_SEPARATOR . 'core.php';
require_once DIR_SYSTEM . 'nitro' . DIRECTORY_SEPARATOR . 'core' . DIRECTORY_SEPARATOR . 'cdn.php';
if (getNitroPersistence('Mini.CSSExtract')) {
$cssExtractCheckPassed = true;
if (getNitroPersistence('Mini.CSSExclude')) {
$cssExclude = trim(getNitroPersistence('Mini.CSSExclude'), "\n\r ");
$cssExclude = explode("\n", $cssExclude);
foreach ($cssExclude as $k => $stylename) {
$stylename = trim($stylename, "\n\r ");
if (!empty($stylename)) {
$cssExclude[$k] = $stylename;
}
}
}
$extractedCSSFiles = array();
$current_pos = 0;
$html_end = strlen($content) - 1;
while ($html_end !== false && $current_pos < $html_end) {
$next_css = strpos($content, 'stylesheet', $current_pos);
$tag_start = $next_css;
if ($next_css !== false) {
//go left to check if we are in a link tag
$i = $next_css;
$isTagStartFound = false;
while ($i > 0 && !$isTagStartFound) {
if ($content[$i - 1] == '<') {
if (substr($content, $i, 4) != '?php') {
$isTagStartFound = true;
} else {
$i--;
}
} else {
$i--;
}
}
$tag_start = $i - 1;
$tag = '';
while ($i < $next_css && !in_array($content[$i], array(' ', "\n", "\r"))) {
$tag .= $content[$i];
$i++;
}
if (strtolower($tag) == 'link') {
//see if we are not in a comment block
$c = $i;
$commentStartFound = false;
$commentEndFound = false;
while ($c > 0 && !$commentStartFound) {
if ($content[$c] == '>') {
if (substr($content, $c - 2, 3) == '-->') {
$commentEndFound = true;
break;
}
}
if ($content[$c] == '<') {
if (substr($content, $c, 4) == '<!--') {
$commentStartFound = true;
}
}
$c--;
}
$weAreInComment = $commentStartFound && !$commentEndFound;
//find the href
while ($i < $html_end) {
if ($content[$i] == 'h' && substr($content, $i, 5) == 'href=') {
$i += 6;
break;
}
$i++;
}
$css_src = '';
while ($i < $html_end && $content[$i] != '\'' && $content[$i] != '"') {
$css_src .= $content[$i];
$i++;
}
if (strpos($css_src, '<?php') !== false || nitroIsIgnoredUrl($css_src, $cssExclude) || $weAreInComment) {
//skip this css if its location is dynamically generated
$current_pos = $next_css + 1;
continue;
}
$extractedCSSFiles[] = $css_src;
//cut the css link
$i = $tag_start;
$tag_end = $tag_start;
$isTagEndFound = false;
while ($i < $html_end && !$isTagEndFound) {
if ($content[$i] == '>' && $content[$i - 1] != '?') {
//if we are not in php closing tag
$isTagEndFound = true;
}
$tag_end = $i;
$i++;
}
$content = substr($content, 0, $tag_start) . substr($content, $tag_end + 1);
$html_end = strlen($content) - 1;
} else {
$current_pos = $next_css + 1;
continue;
}
} else {
break;
}
$current_pos = $tag_start + 1;
}
//minify and combine the newly extracted css resources
//and then put them in the header
$minCSS = optimizeCSS(generateCSSMinificatorStyles($extractedCSSFiles));
$new_css_include = '';
foreach ($minCSS as $css_file) {
$new_css_include .= '<link rel="' . $css_file['rel'] . '" type="text/css" href="' . $css_file['href'] . '" media="' . $css_file['media'] . '" />';
}
if (!empty($new_css_include)) {
$base_start = strpos($content, '<base');
if ($base_start === false) {
$base_start = strpos($content, '<head');
}
$i = $base_start;
$base_end = 0;
while ($i < $html_end && !$base_end) {
if ($content[$i] == '>' && $content[$i - 1] != '?') {
$base_end = $i;
break;
}
$i++;
}
$content = substr($content, 0, $base_end + 1) . $new_css_include . substr($content, $base_end + 1);
}
}
if (getNitroPersistence('Mini.JSExtract')) {
$jsExtractCheckPassed = true;
if (getNitroPersistence('Mini.JSExclude')) {
$jsExclude = trim(getNitroPersistence('Mini.JSExclude'), "\n\r ");
$jsExclude = explode("\n", $jsExclude);
foreach ($jsExclude as $k => $script) {
$script = trim($script, "\n\r ");
if (!empty($script)) {
$jsExclude[$k] = $script;
}
}
}
if (getNitroPersistence('Mini.JSExcludeInline')) {
$jsLineExclude = trim(getNitroPersistence('Mini.JSExcludeInline'), "\n\r ");
$jsLineExclude = explode("\n", $jsLineExclude);
foreach ($jsLineExclude as $k => $script) {
$script = trim($script, "\n\r ");
if (!empty($script)) {
$jsLineExclude[$k] = $script;
}
}
}
if (NITRO_DEFAULT_EXCLUDES) {
$jsLineExclude[] = 'lazy';
if (stripos(getOpenCartSetting('config_template'), 'journal') !== false) {
$jsLineExclude[] = 'function display';
$jsLineExclude[] = 'journal';
$jsLineExclude[] = 'Journal';
}
$jsLineExclude[] = 'jcarousel';
$jsLineExclude[] = 'ddslick';
}
$extractedJSFiles = array();
$current_pos = 0;
$html_end = strlen($content) - 1;
while ($html_end !== false && $current_pos < $html_end) {
$next_js = strpos($content, '<script', $current_pos);
$tag_start = $next_js;
if ($next_js !== false) {
//go left to check if we are in a script tag
$i = $next_js;
$tag_start = $i;
$tag = 'script';
while ($i < $next_js && !in_array($content[$i], array(' ', "\n", "\r"))) {
$tag .= $content[$i];
$i++;
}
if (strtolower($tag) == 'script') {
//see if we are not in a comment block
$c = $i;
$commentStartFound = false;
$commentEndFound = false;
while ($c > 0 && !$commentStartFound) {
if ($content[$c] == '>') {
if (substr($content, $c - 2, 3) == '-->') {
$commentEndFound = true;
break;
}
}
if ($content[$c] == '<') {
if (substr($content, $c, 4) == '<!--') {
$commentStartFound = true;
}
}
$c--;
}
$weAreInComment = $commentStartFound && !$commentEndFound;
//find the src
$src_start = $i;
$isSrcStartFound = false;
while ($i < $html_end && !$isSrcStartFound) {
if ($content[$i] == 's' && substr($content, $i, 4) == 'src=') {
$isSrcStartFound = true;
$src_start = $i;
break;
} else {
if ($content[$i] == '>' && $content[$i - 1] != '?') {
//we have reached the closing char of the script tag
break;
}
}
$i++;
}
$i = $src_start + 5;
$js_src = '';
if ($isSrcStartFound) {
while ($i < $html_end && $content[$i] != '\'' && $content[$i] != '"') {
$js_src .= $content[$i];
$i++;
}
}
$js_src = trim($js_src);
if (!$isSrcStartFound && !$weAreInComment) {
//inline javascript
$type_start = false;
$end_of_tag = false;
$i = $tag_start;
while ($i < $html_end && !$type_start && !$end_of_tag) {
if ($content[$i] == 't') {
if (substr($content, $i, 5) == 'type=') {
$type_start = $i + 6;
break;
}
} else {
if ($content[$i] == '>' && $content[$i - 1] != '?') {
$end_of_tag = $i;
break;
}
}
$i++;
}
if ($type_start) {
$i = $type_start;
$script_type = '';
while ($i < $html_end && $content[$i] != '\'' && $content[$i] != '"') {
$script_type .= $content[$i];
$i++;
}
if ($script_type == 'text/javascript') {
while ($i < $html_end && !$end_of_tag) {
if ($content[$i] == '>' && $content[$i - 1] != '?') {
$end_of_tag = $i;
break;
}
$i++;
}
}
}
if ($end_of_tag) {
$script_end = strpos($content, '</script', $end_of_tag);
$code = substr($content, $end_of_tag + 1, $script_end - ($end_of_tag + 1));
foreach ($jsLineExclude as $excludeCode) {
if (stripos($code, $excludeCode) !== false) {
//skip this js
$current_pos = $next_js + 1;
continue 2;
}
}
$new_js_file = createTempScript($code);
$tag_end = $tag_start;
$i = $tag_start;
$isTagEndFound = false;
$passedThroughClosingScriptTag = false;
while ($i < $html_end && !$isTagEndFound) {
if ($content[$i] == '>' && $content[$i - 1] != '?') {
//if we are not in php closing tag
if ($passedThroughClosingScriptTag) {
$isTagEndFound = true;
}
} else {
if ($content[$i] == '<') {
if (substr($content, $i, 8) == '</script') {
$passedThroughClosingScriptTag = true;
}
}
}
$tag_end = $i;
$i++;
}
$content = substr($content, 0, $tag_start) . substr($content, $tag_end + 1);
$extractedJSFiles[] = $new_js_file;
$html_end = strlen($content) - 1;
}
}
if (strpos($js_src, '<?php') !== false || nitroIsIgnoredUrl($js_src, $jsExclude) || $weAreInComment || !$isSrcStartFound) {
//skip this js if its location is dynamically generated, is excluded, is in comment or is inline
$current_pos = $next_js + 1;
continue;
}
$extractedJSFiles[] = $js_src;
//cut the js link from html
$i = $tag_start;
$tag_end = $tag_start;
$isTagEndFound = false;
$passedThroughClosingScriptTag = false;
while ($i < $html_end && !$isTagEndFound) {
if ($content[$i] == '>' && $content[$i - 1] != '?') {
//if we are not in php closing tag
if ($passedThroughClosingScriptTag) {
$isTagEndFound = true;
}
} else {
if ($content[$i] == '<') {
if (substr($content, $i, 8) == '</script') {
$passedThroughClosingScriptTag = true;
}
}
}
$tag_end = $i;
$i++;
}
$content = substr($content, 0, $tag_start) . substr($content, $tag_end + 1);
$html_end = strlen($content) - 1;
} else {
$current_pos = $next_js + 1;
continue;
}
} else {
break;
}
$current_pos = $tag_start;
}
//minify and combine the extracted js
//and put it at the end
$minJS = optimizeJS(generateJSMinificatorScripts($extractedJSFiles));
$new_js_include = '';
$use_defer = getNitroPersistence('Mini.JSDefer');
foreach ($minJS as $js_file) {
$new_js_include .= '<script type="text/javascript" src="' . $js_file . '"' . ($use_defer ? ' defer' : '') . '></script>';
}
if (!empty($new_js_include)) {
$position = getNitroPersistence('Mini.JSPosition');
if ($position == 'bottom') {
$move_pos = strpos($content, '</body');
if ($move_pos === false) {
$move_pos = strpos($content, '</html');
}
} else {
$base_start = strpos($content, '<base');
if ($base_start === false) {
$base_start = strpos($content, '<head');
}
$i = $base_start;
$base_end = 0;
while ($i < $html_end && !$base_end) {
if ($content[$i] == '>' && $content[$i - 1] != '?') {
$base_end = $i;
break;
}
$i++;
}
$move_pos = $base_end + 1;
}
if ($move_pos !== false) {
$content = substr($content, 0, $move_pos) . $new_js_include . substr($content, $move_pos);
} else {
$content .= $new_js_include;
}
}
}
return $content;
}
