/**
* Retrieve plugin installer pages from NXTClass Plugins API.
*
* It is possible for a plugin to override the Plugin API result with three
* filters. Assume this is for plugins, which can extend on the Plugin Info to
* offer more choices. This is very powerful and must be used with care, when
* overriding the filters.
*
* The first filter, 'plugins_api_args', is for the args and gives the action as
* the second parameter. The hook for 'plugins_api_args' must ensure that an
* object is returned.
*
* The second filter, 'plugins_api', is the result that would be returned.
*
* @since 2.7.0
*
* @param string $action
* @param array|object $args Optional. Arguments to serialize for the Plugin Info API.
* @return object plugins_api response object on success, nxt_Error on failure.
*/
function plugins_api($action, $args = null)
{
if (is_array($args)) {
$args = (object) $args;
}
if (!isset($args->per_page)) {
$args->per_page = 24;
}
// Allows a plugin to override the NXTClass.org API entirely.
// Use the filter 'plugins_api_result' to merely add results.
// Please ensure that a object is returned from the following filters.
$args = apply_filters('plugins_api_args', $args, $action);
$res = apply_filters('plugins_api', false, $action, $args);
if (false === $res) {
$request = nxt_remote_post('http://api.nxtclass.org/plugins/info/1.0/', array('timeout' => 15, 'body' => array('action' => $action, 'request' => serialize($args))));
if (is_nxt_error($request)) {
$res = new nxt_Error('plugins_api_failed', __('An Unexpected HTTP Error occurred during the API request.'), $request->get_error_message());
} else {
$res = unserialize(nxt_remote_retrieve_body($request));
if (false === $res) {
$res = new nxt_Error('plugins_api_failed', __('An unknown error occurred.'), nxt_remote_retrieve_body($request));
}
}
} elseif (!is_nxt_error($res)) {
$res->external = true;
}
return apply_filters('plugins_api_result', $res, $action, $args);
}
function __construct($url, $timeout = 10, $redirects = 5, $headers = null, $useragent = null, $force_fsockopen = false)
{
$this->url = $url;
$this->timeout = $timeout;
$this->redirects = $redirects;
$this->headers = $headers;
$this->useragent = $useragent;
$this->method = SIMPLEPIE_FILE_SOURCE_REMOTE;
if (preg_match('/^http(s)?:\\/\\//i', $url)) {
$args = array('timeout' => $this->timeout, 'redirection' => $this->redirects);
if (!empty($this->headers)) {
$args['headers'] = $this->headers;
}
if (SIMPLEPIE_USERAGENT != $this->useragent) {
//Use default nxt user agent unless custom has been specified
$args['user-agent'] = $this->useragent;
}
$res = nxt_remote_request($url, $args);
if (is_nxt_error($res)) {
$this->error = 'nxt HTTP Error: ' . $res->get_error_message();
$this->success = false;
} else {
$this->headers = nxt_remote_retrieve_headers($res);
$this->body = nxt_remote_retrieve_body($res);
$this->status_code = nxt_remote_retrieve_response_code($res);
}
} else {
if (!($this->body = file_get_contents($url))) {
$this->error = 'file_get_contents could not read the file';
$this->success = false;
}
}
}
function query()
{
$args = func_get_args();
$method = array_shift($args);
$request = new IXR_Request($method, $args);
$xml = $request->getXml();
$port = $this->port ? ":{$this->port}" : '';
$url = $this->scheme . '://' . $this->server . $port . $this->path;
$args = array('headers' => array('Content-Type' => 'text/xml'), 'user-agent' => $this->useragent, 'body' => $xml);
// Merge Custom headers ala #8145
foreach ($this->headers as $header => $value) {
$args['headers'][$header] = $value;
}
if ($this->timeout !== false) {
$args['timeout'] = $this->timeout;
}
// Now send the request
if ($this->debug) {
echo '<pre class="ixr_request">' . htmlspecialchars($xml) . "\n</pre>\n\n";
}
$response = nxt_remote_post($url, $args);
if (is_nxt_error($response)) {
$errno = $response->get_error_code();
$errorstr = $response->get_error_message();
$this->error = new IXR_Error(-32300, "transport error: {$errno} {$errorstr}");
return false;
}
if (200 != nxt_remote_retrieve_response_code($response)) {
$this->error = new IXR_Error(-32301, 'transport error - HTTP status code was not 200 (' . nxt_remote_retrieve_response_code($response) . ')');
return false;
}
if ($this->debug) {
echo '<pre class="ixr_response">' . htmlspecialchars(nxt_remote_retrieve_body($response)) . "\n</pre>\n\n";
}
// Now parse what we've got back
$this->message = new IXR_Message(nxt_remote_retrieve_body($response));
if (!$this->message->parse()) {
// XML error
$this->error = new IXR_Error(-32700, 'parse error. not well formed');
return false;
}
// Is the message a fault?
if ($this->message->messageType == 'fault') {
$this->error = new IXR_Error($this->message->faultCode, $this->message->faultString);
return false;
}
// Message must be OK
return true;
}
/**
* Gets the Pingback endpoint URI provided by a web page specified by URL
*
* @return string|boolean Returns the Pingback endpoint URI if found or false
*/
function get_endpoint_uri($url)
{
// First check for an X-pingback header
if (!($response = nxt_remote_head($url))) {
return false;
}
if (!($content_type = nxt_remote_retrieve_header($response, 'content-type'))) {
return false;
}
if (preg_match('#(image|audio|video|model)/#is', $content_type)) {
return false;
}
if ($x_pingback = nxt_remote_retrieve_header($response, 'x-pingback')) {
return trim($x_pingback);
}
// Fall back to extracting it from the HTML link
if (!($response = nxt_remote_get($url))) {
return false;
}
if (200 !== nxt_remote_retrieve_response_code($response)) {
return false;
}
if ('' === ($response_body = nxt_remote_retrieve_body($response))) {
return false;
}
if (!preg_match_all('@<link([^>]+)>@im', $response_body, $response_links)) {
return false;
}
foreach ($response_links[1] as $response_link_attributes) {
$_link = array('rel' => false, 'href' => false);
$response_link_attributes = preg_split('@\\s+@im', $response_link_attributes, -1, PREG_SPLIT_NO_EMPTY);
foreach ($response_link_attributes as $response_link_attribute) {
if ($_link['rel'] == 'pingback' && $_link['href']) {
return $_link['href'];
}
if (strpos($response_link_attribute, '=', 1) !== false) {
list($_key, $_value) = explode('=', $response_link_attribute, 2);
$_link[strtolower($_key)] = trim($_value, "'\"");
}
}
}
// Fail
return false;
}
function nxt_credits()
{
global $nxt_version;
$locale = get_locale();
$results = get_site_transient('nxtclass_credits_' . $locale);
if (!is_array($results)) {
$response = nxt_remote_get("http://api.nxtclass.org/core/credits/1.0/?version={$nxt_version}&locale={$locale}");
if (is_nxt_error($response) || 200 != nxt_remote_retrieve_response_code($response)) {
return false;
}
$results = maybe_unserialize(nxt_remote_retrieve_body($response));
if (!is_array($results)) {
return false;
}
set_site_transient('nxtclass_credits_' . $locale, $results, 86400);
// One day
}
return $results;
}
/**
* Prints step 2 for Network installation process.
*
* @since 3.0.0
*/
function network_step2($errors = false)
{
global $base, $nxtdb;
$hostname = get_clean_basedomain();
if (!isset($base)) {
$base = trailingslashit(stripslashes(dirname(dirname($_SERVER['SCRIPT_NAME']))));
}
// Wildcard DNS message.
if (is_nxt_error($errors)) {
echo '<div class="error">' . $errors->get_error_message() . '</div>';
}
if ($_POST) {
if (allow_subdomain_install()) {
$subdomain_install = allow_subdirectory_install() ? !empty($_POST['subdomain_install']) : true;
} else {
$subdomain_install = false;
}
} else {
if (is_multisite()) {
$subdomain_install = is_subdomain_install();
?>
<p><?php
_e('The original configuration steps are shown here for reference.');
?>
</p>
<?php
} else {
$subdomain_install = (bool) $nxtdb->get_var("SELECT meta_value FROM {$nxtdb->sitemeta} WHERE site_id = 1 AND meta_key = 'subdomain_install'");
?>
<div class="error"><p><strong><?php
_e('Warning:');
?>
</strong> <?php
_e('An existing NXTClass network was detected.');
?>
</p></div>
<p><?php
_e('Please complete the configuration steps. To create a new network, you will need to empty or remove the network database tables.');
?>
</p>
<?php
}
}
if ($_POST || !is_multisite()) {
?>
<h3><?php
esc_html_e('Enabling the Network');
?>
</h3>
<p><?php
_e('Complete the following steps to enable the features for creating a network of sites.');
?>
</p>
<div class="updated inline"><p><?php
if (file_exists(ABSPATH . '.htaccess')) {
printf(__('<strong>Caution:</strong> We recommend you back up your existing <code>nxt-config.php</code> and <code>%s</code> files.'), '.htaccess');
} elseif (file_exists(ABSPATH . 'web.config')) {
printf(__('<strong>Caution:</strong> We recommend you back up your existing <code>nxt-config.php</code> and <code>%s</code> files.'), 'web.config');
} else {
_e('<strong>Caution:</strong> We recommend you back up your existing <code>nxt-config.php</code> file.');
}
?>
</p></div>
<?php
}
?>
<ol>
<li><p><?php
printf(__('Create a <code>blogs.dir</code> directory at <code>%s/blogs.dir</code>. This directory is used to store uploaded media for your additional sites and must be writeable by the web server.'), nxt_CONTENT_DIR);
if (nxt_CONTENT_DIR != ABSPATH . 'nxt-content') {
echo ' <strong>' . __('Warning:') . ' ' . __('Networks may not be fully compatible with custom nxt-content directories.') . '</strong>';
}
?>
</p></li>
<li><p><?php
printf(__('Add the following to your <code>nxt-config.php</code> file in <code>%s</code> <strong>above</strong> the line reading <code>/* That’s all, stop editing! Happy blogging. */</code>:'), ABSPATH);
?>
</p>
<textarea class="code" readonly="readonly" cols="100" rows="7">
define( 'MULTISITE', true );
define( 'SUBDOMAIN_INSTALL', <?php
echo $subdomain_install ? 'true' : 'false';
?>
);
$base = '<?php
echo $base;
?>
';
define( 'DOMAIN_CURRENT_SITE', '<?php
echo $hostname;
?>
' );
define( 'PATH_CURRENT_SITE', '<?php
echo $base;
?>
' );
define( 'SITE_ID_CURRENT_SITE', 1 );
define( 'BLOG_ID_CURRENT_SITE', 1 );</textarea>
<?php
$keys_salts = array('AUTH_KEY' => '', 'SECURE_AUTH_KEY' => '', 'LOGGED_IN_KEY' => '', 'NONCE_KEY' => '', 'AUTH_SALT' => '', 'SECURE_AUTH_SALT' => '', 'LOGGED_IN_SALT' => '', 'NONCE_SALT' => '');
foreach ($keys_salts as $c => $v) {
if (defined($c)) {
unset($keys_salts[$c]);
}
}
if (!empty($keys_salts)) {
$keys_salts_str = '';
$from_api = nxt_remote_get('https://api.nxtclass.org/secret-key/1.1/salt/');
if (is_nxt_error($from_api)) {
foreach ($keys_salts as $c => $v) {
$keys_salts_str .= "\ndefine( '{$c}', '" . nxt_generate_password(64, true, true) . "' );";
}
} else {
$from_api = explode("\n", nxt_remote_retrieve_body($from_api));
foreach ($keys_salts as $c => $v) {
$keys_salts_str .= "\ndefine( '{$c}', '" . substr(array_shift($from_api), 28, 64) . "' );";
}
}
$num_keys_salts = count($keys_salts);
?>
<p><?php
echo _n('This unique authentication key is also missing from your <code>nxt-config.php</code> file.', 'These unique authentication keys are also missing from your <code>nxt-config.php</code> file.', $num_keys_salts);
?>
<?php
_e('To make your installation more secure, you should also add:');
?>
</p>
<textarea class="code" readonly="readonly" cols="100" rows="<?php
echo $num_keys_salts;
?>
"><?php
echo esc_textarea($keys_salts_str);
?>
</textarea>
<?php
}
?>
</li>
<?php
if (iis7_supports_permalinks()) {
if ($subdomain_install) {
$web_config_file = '<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<rewrite>
<rules>
<rule name="NXTClass Rule 1" stopProcessing="true">
<match url="^index\\.php$" ignoreCase="false" />
<action type="None" />
</rule>
<rule name="NXTClass Rule 2" stopProcessing="true">
<match url="^files/(.+)" ignoreCase="false" />
<action type="Rewrite" url="nxt-includes/ms-files.php?file={R:1}" appendQueryString="false" />
</rule>
<rule name="NXTClass Rule 3" stopProcessing="true">
<match url="^" ignoreCase="false" />
<conditions logicalGrouping="MatchAny">
<add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" />
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" />
</conditions>
<action type="None" />
</rule>
<rule name="NXTClass Rule 4" stopProcessing="true">
<match url="." ignoreCase="false" />
<action type="Rewrite" url="index.php" />
</rule>
</rules>
</rewrite>
</system.webServer>
</configuration>';
} else {
$web_config_file = '<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<rewrite>
<rules>
<rule name="NXTClass Rule 1" stopProcessing="true">
<match url="^index\\.php$" ignoreCase="false" />
<action type="None" />
</rule>
<rule name="NXTClass Rule 2" stopProcessing="true">
<match url="^([_0-9a-zA-Z-]+/)?files/(.+)" ignoreCase="false" />
<action type="Rewrite" url="nxt-includes/ms-files.php?file={R:2}" appendQueryString="false" />
</rule>
<rule name="NXTClass Rule 3" stopProcessing="true">
<match url="^([_0-9a-zA-Z-]+/)?nxt-admin$" ignoreCase="false" />
<action type="Redirect" url="{R:1}nxt-admin/" redirectType="Permanent" />
</rule>
<rule name="NXTClass Rule 4" stopProcessing="true">
<match url="^" ignoreCase="false" />
<conditions logicalGrouping="MatchAny">
<add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" />
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" />
</conditions>
<action type="None" />
</rule>
<rule name="NXTClass Rule 5" stopProcessing="true">
<match url="^[_0-9a-zA-Z-]+/(nxt-(content|admin|includes).*)" ignoreCase="false" />
<action type="Rewrite" url="{R:1}" />
</rule>
<rule name="NXTClass Rule 6" stopProcessing="true">
<match url="^([_0-9a-zA-Z-]+/)?(.*\\.php)$" ignoreCase="false" />
<action type="Rewrite" url="{R:2}" />
</rule>
<rule name="NXTClass Rule 7" stopProcessing="true">
<match url="." ignoreCase="false" />
<action type="Rewrite" url="index.php" />
</rule>
</rules>
</rewrite>
</system.webServer>
</configuration>';
}
?>
<li><p><?php
printf(__('Add the following to your <code>web.config</code> file in <code>%s</code>, replacing other NXTClass rules:'), ABSPATH);
?>
</p>
<textarea class="code" readonly="readonly" cols="100" rows="20">
<?php
echo esc_textarea($web_config_file);
?>
</textarea></li>
</ol>
<?php
} else {
// end iis7_supports_permalinks(). construct an htaccess file instead:
$htaccess_file = 'RewriteEngine On
RewriteBase ' . $base . '
RewriteRule ^index\\.php$ - [L]
# uploaded files
RewriteRule ^' . ($subdomain_install ? '' : '([_0-9a-zA-Z-]+/)?') . 'files/(.+) nxt-includes/ms-files.php?file=$' . ($subdomain_install ? 1 : 2) . ' [L]' . "\n";
if (!$subdomain_install) {
$htaccess_file .= "\n# add a trailing slash to /nxt-admin\n" . 'RewriteRule ^([_0-9a-zA-Z-]+/)?nxt-admin$ $1nxt-admin/ [R=301,L]' . "\n";
}
$htaccess_file .= "\n" . 'RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]';
// @todo custom content dir.
if (!$subdomain_install) {
$htaccess_file .= "\nRewriteRule ^[_0-9a-zA-Z-]+/(nxt-(content|admin|includes).*) \$1 [L]\nRewriteRule ^[_0-9a-zA-Z-]+/(.*\\.php)\$ \$1 [L]";
}
$htaccess_file .= "\nRewriteRule . index.php [L]";
?>
<li><p><?php
printf(__('Add the following to your <code>.htaccess</code> file in <code>%s</code>, replacing other NXTClass rules:'), ABSPATH);
?>
</p>
<textarea class="code" readonly="readonly" cols="100" rows="<?php
echo $subdomain_install ? 11 : 16;
?>
">
<?php
echo esc_textarea($htaccess_file);
?>
</textarea></li>
</ol>
<?php
}
// end IIS/Apache code branches.
if (!is_multisite()) {
?>
<p><?php
printf(__('Once you complete these steps, your network is enabled and configured. You will have to log in again.'));
?>
<a href="<?php
echo esc_url(site_url('nxt-login.php'));
?>
"><?php
_e('Log In');
?>
</a></p>
<?php
}
}
/**
* Check theme versions against the latest versions hosted on NXTClass.org.
*
* A list of all themes installed in sent to nxt. Checks against the
* NXTClass server at api.nxtclass.org. Will only check if NXTClass isn't
* installing.
*
* @package NXTClass
* @since 2.7.0
* @uses $nxt_version Used to notify the NXTClass version.
*
* @return mixed Returns null if update is unsupported. Returns false if check is too soon.
*/
function nxt_update_themes()
{
include ABSPATH . nxtINC . '/version.php';
// include an unmodified $nxt_version
if (defined('nxt_INSTALLING')) {
return false;
}
if (!function_exists('get_themes')) {
require_once ABSPATH . 'nxt-includes/theme.php';
}
$installed_themes = get_themes();
$last_update = get_site_transient('update_themes');
if (!is_object($last_update)) {
$last_update = new stdClass();
}
// Check for updated every 60 minutes if hitting update pages; else, check every 12 hours.
$timeout = in_array(current_filter(), array('load-themes.php', 'load-update.php', 'load-update-core.php')) ? 3600 : 43200;
$time_not_changed = isset($last_update->last_checked) && $timeout > time() - $last_update->last_checked;
$themes = array();
$checked = array();
$exclude_fields = array('Template Files', 'Stylesheet Files', 'Status', 'Theme Root', 'Theme Root URI', 'Template Dir', 'Stylesheet Dir', 'Description', 'Tags', 'Screenshot');
// Put slug of current theme into request.
$themes['current_theme'] = get_option('stylesheet');
foreach ((array) $installed_themes as $theme_title => $theme) {
$themes[$theme['Stylesheet']] = array();
$checked[$theme['Stylesheet']] = $theme['Version'];
$themes[$theme['Stylesheet']]['Name'] = $theme['Name'];
$themes[$theme['Stylesheet']]['Version'] = $theme['Version'];
foreach ((array) $theme as $key => $value) {
if (!in_array($key, $exclude_fields)) {
$themes[$theme['Stylesheet']][$key] = $value;
}
}
}
$theme_changed = false;
foreach ($checked as $slug => $v) {
$update_request->checked[$slug] = $v;
if (!isset($last_update->checked[$slug]) || strval($last_update->checked[$slug]) !== strval($v)) {
$theme_changed = true;
}
}
if (isset($last_update->response) && is_array($last_update->response)) {
foreach ($last_update->response as $slug => $update_details) {
if (!isset($checked[$slug])) {
$theme_changed = true;
break;
}
}
}
if ($time_not_changed && !$theme_changed) {
return false;
}
// Update last_checked for current to prevent multiple blocking requests if request hangs
$last_update->last_checked = time();
set_site_transient('update_themes', $last_update);
$options = array('timeout' => defined('DOING_CRON') && DOING_CRON ? 30 : 3, 'body' => array('themes' => serialize($themes)), 'user-agent' => 'NXTClass/' . $nxt_version . '; ' . get_bloginfo('url'));
$raw_response = nxt_remote_post('http://api.nxtclass.org/themes/update-check/1.0/', $options);
if (is_nxt_error($raw_response) || 200 != nxt_remote_retrieve_response_code($raw_response)) {
return false;
}
$new_update = new stdClass();
$new_update->last_checked = time();
$new_update->checked = $checked;
$response = unserialize(nxt_remote_retrieve_body($raw_response));
if (false !== $response) {
$new_update->response = $response;
}
set_site_transient('update_themes', $new_update);
}
/**
* Retrieve theme installer pages from NXTClass Themes API.
*
* It is possible for a theme to override the Themes API result with three
* filters. Assume this is for themes, which can extend on the Theme Info to
* offer more choices. This is very powerful and must be used with care, when
* overridding the filters.
*
* The first filter, 'themes_api_args', is for the args and gives the action as
* the second parameter. The hook for 'themes_api_args' must ensure that an
* object is returned.
*
* The second filter, 'themes_api', is the result that would be returned.
*
* @since 2.8.0
*
* @param string $action
* @param array|object $args Optional. Arguments to serialize for the Theme Info API.
* @return mixed
*/
function themes_api($action, $args = null)
{
if (is_array($args)) {
$args = (object) $args;
}
if (!isset($args->per_page)) {
$args->per_page = 24;
}
$args = apply_filters('themes_api_args', $args, $action);
//NOTE: Ensure that an object is returned via this filter.
$res = apply_filters('themes_api', false, $action, $args);
//NOTE: Allows a theme to completely override the builtin NXTClass.org API.
if (!$res) {
$request = nxt_remote_post('http://api.nxtclass.org/themes/info/1.0/', array('body' => array('action' => $action, 'request' => serialize($args))));
if (is_nxt_error($request)) {
$res = new nxt_Error('themes_api_failed', __('An Unexpected HTTP Error occurred during the API request.'), $request->get_error_message());
} else {
$res = unserialize(nxt_remote_retrieve_body($request));
if (!$res) {
$res = new nxt_Error('themes_api_failed', __('An unknown error occurred.'), nxt_remote_retrieve_body($request));
}
}
}
//var_dump(array($args, $res));
return apply_filters('themes_api_result', $res, $action, $args);
}
*/
function get_bloginfo()
{
return (is_ssl() ? 'https://' : 'http://') . $_SERVER['HTTP_HOST'] . str_replace($_SERVER['PHP_SELF'], '/nxt-admin/setup-config.php', '');
}
/**#@-*/
$secret_keys = nxt_remote_get('https://api.nxtclass.org/secret-key/1.1/salt/');
}
if ($no_api || is_nxt_error($secret_keys)) {
$secret_keys = array();
require_once ABSPATH . nxtINC . '/pluggable.php';
for ($i = 0; $i < 8; $i++) {
$secret_keys[] = nxt_generate_password(64, true, true);
}
} else {
$secret_keys = explode("\n", nxt_remote_retrieve_body($secret_keys));
foreach ($secret_keys as $k => $v) {
$secret_keys[$k] = substr($v, 28, 64);
}
}
$key = 0;
foreach ($configFile as $line_num => $line) {
switch (substr($line, 0, 16)) {
case "define('DB_NAME'":
$configFile[$line_num] = str_replace("database_name_here", $dbname, $line);
break;
case "define('DB_USER'":
$configFile[$line_num] = str_replace("'username_here'", "'{$uname}'", $line);
break;
case "define('DB_PASSW":
$configFile[$line_num] = str_replace("'password_here'", "'{$passwrd}'", $line);
/**
* HTTP request for URI to retrieve content.
*
* @since 1.5.1
* @uses nxt_remote_get()
*
* @param string $uri URI/URL of web page to retrieve.
* @return bool|string HTTP content. False on failure.
*/
function nxt_remote_fopen($uri)
{
$parsed_url = @parse_url($uri);
if (!$parsed_url || !is_array($parsed_url)) {
return false;
}
$options = array();
$options['timeout'] = 10;
$response = nxt_remote_get($uri, $options);
if (is_nxt_error($response)) {
return false;
}
return nxt_remote_retrieve_body($response);
}
/**
* Check if the user needs a browser update
*
* @since 3.2.0
*
* @return array|bool False on failure, array of browser data on success.
*/
function nxt_check_browser_version()
{
if (empty($_SERVER['HTTP_USER_AGENT'])) {
return false;
}
$key = md5($_SERVER['HTTP_USER_AGENT']);
if (false === ($response = get_site_transient('browser_' . $key))) {
global $nxt_version;
$options = array('body' => array('useragent' => $_SERVER['HTTP_USER_AGENT']), 'user-agent' => 'NXTClass/' . $nxt_version . '; ' . get_bloginfo('url'));
$response = nxt_remote_post('http://api.nxtclass.org/core/browse-happy/1.0/', $options);
if (is_nxt_error($response) || 200 != nxt_remote_retrieve_response_code($response)) {
return false;
}
/**
* Response should be an array with:
* 'name' - string - A user friendly browser name
* 'version' - string - The most recent version of the browser
* 'current_version' - string - The version of the browser the user is using
* 'upgrade' - boolean - Whether the browser needs an upgrade
* 'insecure' - boolean - Whether the browser is deemed insecure
* 'upgrade_url' - string - The url to visit to upgrade
* 'img_src' - string - An image representing the browser
* 'img_src_ssl' - string - An image (over SSL) representing the browser
*/
$response = unserialize(nxt_remote_retrieve_body($response));
if (!$response) {
return false;
}
set_site_transient('browser_' . $key, $response, 604800);
// cache for 1 week
}
return $response;
}
function et_check_themes_updates($update_transient)
{
global $nxt_version;
if (!isset($update_transient->checked)) {
return $update_transient;
} else {
$themes = $update_transient->checked;
}
$send_to_api = array('action' => 'check_theme_updates', 'installed_themes' => $themes);
$options = array('timeout' => defined('DOING_CRON') && DOING_CRON ? 30 : 3, 'body' => $send_to_api, 'user-agent' => 'NXTClass/' . $nxt_version . '; ' . home_url());
$theme_request = nxt_remote_post('http://www.elegantthemes.com/api/api.php', $options);
if (!is_nxt_error($theme_request) && nxt_remote_retrieve_response_code($theme_request) == 200) {
$theme_response = unserialize(nxt_remote_retrieve_body($theme_request));
if (!empty($theme_response)) {
$update_transient->response = array_merge(!empty($update_transient->response) ? $update_transient->response : array(), $theme_response);
$last_update->checked = $themes;
$last_update->response = $theme_response;
}
}
$last_update->last_checked = time();
set_site_transient('et_update_themes', $last_update);
return $update_transient;
}
/**
* Finds a pingback server URI based on the given URL.
*
* Checks the HTML for the rel="pingback" link and x-pingback headers. It does
* a check for the x-pingback headers first and returns that, if available. The
* check for the rel="pingback" has more overhead than just the header.
*
* @since 1.5.0
*
* @param string $url URL to ping.
* @param int $deprecated Not Used.
* @return bool|string False on failure, string containing URI on success.
*/
function discover_pingback_server_uri($url, $deprecated = '')
{
if (!empty($deprecated)) {
_deprecated_argument(__FUNCTION__, '2.7');
}
$pingback_str_dquote = 'rel="pingback"';
$pingback_str_squote = 'rel=\'pingback\'';
/** @todo Should use Filter Extension or custom preg_match instead. */
$parsed_url = parse_url($url);
if (!isset($parsed_url['host'])) {
// Not an URL. This should never happen.
return false;
}
//Do not search for a pingback server on our own uploads
$uploads_dir = nxt_upload_dir();
if (0 === strpos($url, $uploads_dir['baseurl'])) {
return false;
}
$response = nxt_remote_head($url, array('timeout' => 2, 'httpversion' => '1.0'));
if (is_nxt_error($response)) {
return false;
}
if (nxt_remote_retrieve_header($response, 'x-pingback')) {
return nxt_remote_retrieve_header($response, 'x-pingback');
}
// Not an (x)html, sgml, or xml page, no use going further.
if (preg_match('#(image|audio|video|model)/#is', nxt_remote_retrieve_header($response, 'content-type'))) {
return false;
}
// Now do a GET since we're going to look in the html headers (and we're sure its not a binary file)
$response = nxt_remote_get($url, array('timeout' => 2, 'httpversion' => '1.0'));
if (is_nxt_error($response)) {
return false;
}
$contents = nxt_remote_retrieve_body($response);
$pingback_link_offset_dquote = strpos($contents, $pingback_str_dquote);
$pingback_link_offset_squote = strpos($contents, $pingback_str_squote);
if ($pingback_link_offset_dquote || $pingback_link_offset_squote) {
$quote = $pingback_link_offset_dquote ? '"' : '\'';
$pingback_link_offset = $quote == '"' ? $pingback_link_offset_dquote : $pingback_link_offset_squote;
$pingback_href_pos = @strpos($contents, 'href=', $pingback_link_offset);
$pingback_href_start = $pingback_href_pos + 6;
$pingback_href_end = @strpos($contents, $quote, $pingback_href_start);
$pingback_server_url_len = $pingback_href_end - $pingback_href_start;
$pingback_server_url = substr($contents, $pingback_href_start, $pingback_server_url_len);
// We may find rel="pingback" but an incomplete pingback URL
if ($pingback_server_url_len > 0) {
// We got it!
return $pingback_server_url;
}
}
return false;
}
/**
* Fetches result from an oEmbed provider for a specific format and complete provider URL
*
* @since 3.0.0
* @access private
* @param string $provider_url_with_args URL to the provider with full arguments list (url, maxheight, etc.)
* @param string $format Format to use
* @return bool|object False on failure, otherwise the result in the form of an object.
*/
function _fetch_with_format($provider_url_with_args, $format)
{
$provider_url_with_args = add_query_arg('format', $format, $provider_url_with_args);
$response = nxt_remote_get($provider_url_with_args);
if (501 == nxt_remote_retrieve_response_code($response)) {
return new nxt_Error('not-implemented');
}
if (!($body = nxt_remote_retrieve_body($response))) {
return false;
}
$parse_method = "_parse_{$format}";
return $this->{$parse_method}($body);
}
