75 lines
2.5 KiB
PHP
75 lines
2.5 KiB
PHP
<?php
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/**
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* A simple set of functions to check our version 1.0 update service
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*
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* @package WordPress
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* @since 2.3
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*/
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/**
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* wp_version_check() - Check WordPress version against the newest version.
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*
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* The WordPress version, PHP version, and Locale is sent. Checks against the WordPress server at
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* api.wordpress.org server. Will only check if PHP has fsockopen enabled and WordPress isn't installing.
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*
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* @package WordPress
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* @since 2.3
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* @uses $wp_version Used to check against the newest WordPress version.
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*
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* @return mixed Returns null if update is unsupported. Returns false if check is too soon.
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*/
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function wp_version_check() {
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if ( !function_exists('fsockopen') || strpos($_SERVER['PHP_SELF'], 'install.php') !== false || defined('WP_INSTALLING') )
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return;
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global $wp_version;
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$php_version = phpversion();
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$current = get_option( 'update_core' );
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$locale = get_locale();
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if (
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isset( $current->last_checked ) &&
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43200 > ( time() - $current->last_checked ) &&
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$current->version_checked == $wp_version
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)
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return false;
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$new_option = '';
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$new_option->last_checked = time(); // this gets set whether we get a response or not, so if something is down or misconfigured it won't delay the page load for more than 3 seconds, twice a day
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$new_option->version_checked = $wp_version;
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$http_request = "GET /core/version-check/1.1/?version=$wp_version&php=$php_version&locale=$locale HTTP/1.0\r\n";
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$http_request .= "Host: api.wordpress.org\r\n";
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$http_request .= 'Content-Type: application/x-www-form-urlencoded; charset=' . get_option('blog_charset') . "\r\n";
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$http_request .= 'User-Agent: WordPress/' . $wp_version . '; ' . get_bloginfo('url') . "\r\n";
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$http_request .= "\r\n";
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$response = '';
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if ( false !== ( $fs = @fsockopen( 'api.wordpress.org', 80, $errno, $errstr, 3 ) ) && is_resource($fs) ) {
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fwrite( $fs, $http_request );
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while ( !feof( $fs ) )
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$response .= fgets( $fs, 1160 ); // One TCP-IP packet
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fclose( $fs );
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$response = explode("\r\n\r\n", $response, 2);
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if ( !preg_match( '|HTTP/.*? 200|', $response[0] ) )
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return false;
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$body = trim( $response[1] );
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$body = str_replace(array("\r\n", "\r"), "\n", $body);
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$returns = explode("\n", $body);
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$new_option->response = attribute_escape( $returns[0] );
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if ( isset( $returns[1] ) )
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$new_option->url = clean_url( $returns[1] );
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if ( isset( $returns[2] ) )
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$new_option->current = attribute_escape( $returns[2] );
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}
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update_option( 'update_core', $new_option );
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}
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add_action( 'init', 'wp_version_check' );
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?>
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