mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
4a5d9b03f8
git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@39001 467b73ca-7a2a-4603-9d3b-597d59a354a9
326 lines
9.9 KiB
PHP
326 lines
9.9 KiB
PHP
<?php
|
|
|
|
/**
|
|
* A class with HTTP-related helpers.
|
|
* Like Debug, this is more a bundle of methods than a class ;-)
|
|
*/
|
|
class HTTP {
|
|
|
|
static $userName;
|
|
static $password;
|
|
|
|
/**
|
|
* Turns a local system filename into a URL by comparing it to the script filename
|
|
*/
|
|
static function filename2url($filename) {
|
|
$slashPos = -1;
|
|
while(($slashPos = strpos($filename, "/", $slashPos+1)) !== false) {
|
|
if(substr($filename, 0, $slashPos) == substr($_SERVER['SCRIPT_FILENAME'],0,$slashPos)) {
|
|
$commonLength = $slashPos;
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
|
|
$urlBase = substr($_SERVER['PHP_SELF'], 0, -(strlen($_SERVER['SCRIPT_FILENAME']) - $commonLength));
|
|
$url = $urlBase . substr($filename, $commonLength);
|
|
$protocol = $_SERVER['HTTPS'] ? "https" : "http";
|
|
return "$protocol://". $_SERVER['HTTP_HOST'] . $url;
|
|
|
|
// Count the number of extra folders the script is in.
|
|
// $prefix = str_repeat("../", substr_count(substr($_SERVER[SCRIPT_FILENAME],$commonBaseLength)));
|
|
}
|
|
|
|
/**
|
|
* Turn all relative URLs in the content to absolute URLs
|
|
*/
|
|
static function absoluteURLs($html) {
|
|
return HTTP::urlRewriter($html, '(substr($URL,0,1) == "/") ? ( Director::protocolAndHost() . $URL ) : ( (ereg("^[A-Za-z]+:", $URL)) ? $URL : Director::absoluteBaseURL() . $URL )' );
|
|
}
|
|
|
|
/*
|
|
* Rewrite all the URLs in the given content, evaluating the given string as PHP code
|
|
*
|
|
* Put $URL where you want the URL to appear, however, you can't embed $URL in strings
|
|
* Some example code:
|
|
* '"../../" . $URL'
|
|
* 'myRewriter($URL)'
|
|
* '(substr($URL,0,1)=="/") ? "../" . substr($URL,1) : $URL'
|
|
*/
|
|
static function urlRewriter($content, $code) {
|
|
$attribs = array("src","background","a" => "href","link" => "href", "base" => "href");
|
|
foreach($attribs as $tag => $attrib) {
|
|
if(!is_numeric($tag)) $tagPrefix = "$tag ";
|
|
else $tagPrefix = "";
|
|
|
|
$regExps[] = "/(<{$tagPrefix}[^>]*$attrib *= *\")([^\"]*)(\")/ie";
|
|
$regExps[] = "/(<{$tagPrefix}[^>]*$attrib *= *')([^']*)(')/ie";
|
|
$regExps[] = "/(<{$tagPrefix}[^>]*$attrib *= *)([^\"' ]*)( )/ie";
|
|
}
|
|
$regExps[] = '/(background-image:[^;]*url *\()([^)]+)(\))/ie';
|
|
$regExps[] = '/(background:[^;]*url *\()([^)]+)(\))/ie';
|
|
|
|
// Make
|
|
$code = 'stripslashes("$1") . (' . str_replace('$URL', 'stripslashes("$2")', $code) . ') . stripslashes("$3")';
|
|
|
|
foreach($regExps as $regExp) {
|
|
$content = preg_replace($regExp, $code, $content);
|
|
}
|
|
|
|
return $content;
|
|
}
|
|
|
|
static function setGetVar($varname, $varvalue, $currentURL = null) {
|
|
$currentURL = $currentURL ? $currentURL : $_SERVER['REQUEST_URI'];
|
|
|
|
$scriptbase = $currentURL;
|
|
$scriptbase = str_replace('&','&',$scriptbase);
|
|
|
|
$scriptbase = ereg_replace("&$varname=[^&]*",'',$scriptbase);
|
|
$scriptbase = ereg_replace("\?$varname=[^&]*&",'?',$scriptbase);
|
|
$scriptbase = ereg_replace("\?$varname=[^&]*",'',$scriptbase);
|
|
|
|
$suffix = '';
|
|
if(($hashPos = strpos($scriptbase,'#')) !== false) {
|
|
$suffix .= substr($scriptbase, $hashPos);
|
|
$scriptbase = substr($scriptbase, 0, $hashPos);
|
|
}
|
|
|
|
if($varvalue !== null) {
|
|
$scriptbase .= (strrpos($scriptbase,'?') !== false) ? '&' : '?';
|
|
$scriptbase .= "$varname=" . (isset($urlEncodeVarValue) ? urlencode($varvalue) : $varvalue);
|
|
}
|
|
|
|
$scriptbase = str_replace('&','&',$scriptbase);
|
|
return $scriptbase . $suffix;
|
|
}
|
|
|
|
static function RAW_setGetVar($varname, $varvalue, $currentURL = null) {
|
|
$url = self::setGetVar($varname, $varvalue, $currentURL);
|
|
return Convert::xml2raw($url);
|
|
}
|
|
|
|
static function findByTagAndAttribute($content, $attribs) {
|
|
|
|
foreach($attribs as $tag => $attrib) {
|
|
if(!is_numeric($tag)) $tagPrefix = "$tag ";
|
|
else $tagPrefix = "";
|
|
|
|
$regExps[] = "/(<{$tagPrefix}[^>]*$attrib *= *\")([^\"]*)(\")/ie";
|
|
$regExps[] = "/(<{$tagPrefix}[^>]*$attrib *= *')([^']*)(')/ie";
|
|
$regExps[] = "/(<{$tagPrefix}[^>]*$attrib *= *)([^\"' ]*)( )/ie";
|
|
}
|
|
|
|
foreach($regExps as $regExp) {
|
|
$content = preg_replace($regExp, '$items[] = "$2"', $content);
|
|
}
|
|
|
|
return isset($items) ? $items : null;
|
|
}
|
|
|
|
static function getLinksIn($content) {
|
|
return self::findByTagAndAttribute($content, array("a" => "href"));
|
|
}
|
|
static function getImagesIn($content) {
|
|
return self::findByTagAndAttribute($content, array("img" => "src"));
|
|
}
|
|
|
|
/*
|
|
* Outputs appropriate header for downloading a file
|
|
* exits() after the call, so that no further output is given
|
|
*/
|
|
static function sendFileToBrowser($fileData, $fileName, $mimeType = false) {
|
|
if(!$mimeType) $mimeType = self::getMimeType($fileName);
|
|
$ext = strtolower(substr($fileName,strrpos($fileName,'.')+1));
|
|
$inlineExtensions = array('pdf','png','jpg','jpe','gif','swf','htm','html','txt','text','avi','wmv','mov','mpe','mpg','mp3','mpeg');
|
|
|
|
if(in_array($ext, $inlineExtensions)) $inline = true;
|
|
|
|
header("Content-Type: $mimeType; name=\"" . addslashes($fileName) . "\"");
|
|
//header("Content-Type: $mimeType" );
|
|
// Downloadable
|
|
//if(!$inline)
|
|
$dispHeader = "Content-disposition: attachment; filename=" . addslashes($fileName) . "";
|
|
|
|
// Debug::message('CD: ' . strlen( $dispHeader ) );
|
|
|
|
|
|
header( $dispHeader );
|
|
header("Content-Length: " . strlen($fileData));
|
|
|
|
echo $fileData;
|
|
|
|
exit();
|
|
}
|
|
|
|
/*
|
|
* Get mime type based on extension
|
|
*/
|
|
static function getMimeType($filename) {
|
|
global $global_mimetypes;
|
|
if(!$global_mimetypes) self::loadMimeTypes();
|
|
$ext = strtolower(substr($filename,strrpos($filename,'.')+1));
|
|
return $global_mimetypes[$ext];
|
|
}
|
|
|
|
/*
|
|
* Load the mime-type data from the system file
|
|
*/
|
|
static function loadMimeTypes() {
|
|
if(file_exists('/etc/mime.types')) {
|
|
$mimeTypes = file('/etc/mime.types');
|
|
foreach($mimeTypes as $typeSpec) {
|
|
if(($typeSpec = trim($typeSpec)) && substr($typeSpec,0,1) != "#") {
|
|
$parts = split("[ \t\r\n]+", $typeSpec);
|
|
if(sizeof($parts) > 1) {
|
|
$mimeType = array_shift($parts);
|
|
foreach($parts as $ext) {
|
|
$ext = strtolower($ext);
|
|
$mimeData[$ext] = $mimeType;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Fail-over for if people don't have /etc/mime.types on their server. it's unclear how important this actually is
|
|
} else {
|
|
$mimeData = array(
|
|
"doc" => "application/msword",
|
|
"xls" => "application/vnd.ms-excel",
|
|
"rtf" => "application/rtf",
|
|
);
|
|
}
|
|
|
|
global $global_mimetypes;
|
|
$global_mimetypes = $mimeData;
|
|
return $mimeData;
|
|
}
|
|
|
|
/**
|
|
* Send an HTTP request to the host
|
|
*/
|
|
static function sendRequest( $host, $path, $query, $port = 80 ) {
|
|
$socket = fsockopen( $host, $port, $errno, $error );
|
|
|
|
if( !$socket )
|
|
return $error;
|
|
|
|
if( $query )
|
|
$query = '?' . $query;
|
|
|
|
if( self::$userName && self::$password )
|
|
$auth = "Authorization: Basic " . base64_encode( self::$userName . ':' . self::$password ) . "\r\n";
|
|
|
|
$request = "GET {$path}{$query} HTTP/1.1\r\nHost: $host\r\nConnection: Close\r\n{$auth}\r\n";
|
|
|
|
fwrite( $socket, $request );
|
|
$response = stream_get_contents( $socket );
|
|
|
|
return $response;
|
|
}
|
|
|
|
static function sendPostRequest( $host, $path, $data, $name, $query = '', $port = 80 ) {
|
|
|
|
$socket = fsockopen( $host, $port, $errno, $error );
|
|
|
|
if( !$socket )
|
|
return $error;
|
|
|
|
if( self::$userName && self::$password )
|
|
$auth = "Authorization: Basic " . base64_encode( self::$userName . ':' . self::$password ) . "\r\n";
|
|
|
|
if( $query )
|
|
$query = '?' . $query;
|
|
|
|
$data = urlencode( $data );
|
|
$data = $name . '=' . $data;
|
|
$length = strlen( $data );
|
|
|
|
$request = "POST {$path}{$query} HTTP/1.1\r\nHost: $host\r\n{$auth}Content-Type: application/x-www-form-urlencoded\r\nContent-Length: $length\r\n\r\n";
|
|
|
|
$request .= $data . "\r\n\r\n";
|
|
|
|
fwrite( $socket, $request );
|
|
$response = stream_get_contents( $socket );
|
|
|
|
/*if( $query )
|
|
$query = '?' . $query;
|
|
|
|
$vars['synchronise'] = $data;
|
|
|
|
$curl = curl_init('http://' . $host . $path );
|
|
|
|
curl_setopt( $curl, CURLOPT_RETURNTRANSFER, 1);
|
|
curl_setopt( $curl, CURLOPT_POSTFIELDS, $vars );
|
|
curl_setopt( $curl, CURLOPT_POST, 1 );
|
|
curl_setopt( $curl, CURLOPT_VERBOSE, true );
|
|
curl_setopt( $curl, CURLOPT_USERPWD, self::$userName . ':' . self::$password);
|
|
|
|
$response = curl_exec( $curl );
|
|
curl_close( $curl );*/
|
|
|
|
return $response;
|
|
|
|
}
|
|
|
|
protected static $cache_age = 86400, $modification_date;
|
|
|
|
/**
|
|
* Set the maximum age of this page in web caches, in seconds
|
|
*/
|
|
static function set_cache_age($age) {
|
|
self::$cache_age = $age;
|
|
}
|
|
|
|
static function register_modification_date($dateString) {
|
|
$timestamp = strtotime($dateString);
|
|
if($timestamp > self::$modification_date) self::$modification_date = $timestamp;
|
|
}
|
|
|
|
/**
|
|
* Add the appropriate caching headers to the response
|
|
*/
|
|
static function add_cache_headers() {
|
|
// Development sites have frequently changing templates; this can get stuffed up by the code
|
|
// below.
|
|
if(Director::isDev()) return;
|
|
|
|
if(!headers_sent()) {
|
|
if(function_exists('apache_request_headers')) {
|
|
$headers = apache_request_headers();
|
|
if(isset($headers['X-Requested-With']) && $headers['X-Requested-With'] == 'XMLHttpRequest') self::$cache_age = 0;
|
|
// bdc: now we must check for DUMB IE6:
|
|
if(isset($headers['x-requested-with']) && $headers['x-requested-with'] == 'XMLHttpRequest') self::$cache_age = 0;
|
|
}
|
|
|
|
if(self::$cache_age > 0) {
|
|
header("Cache-Control: max-age=" . self::$cache_age . ", must-revalidate");
|
|
header("Pragma:");
|
|
} else {
|
|
header("Cache-Control: no-cache, max-age=0, must-revalidate");
|
|
}
|
|
|
|
if(self::$modification_date && self::$cache_age > 0) {
|
|
header("Last-Modified: " . self::gmt_date(self::$modification_date));
|
|
|
|
$expires = 2 * time() - self::$modification_date;
|
|
header("Expires: " . self::gmt_date($expires));
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Return an RFC 2822 date in the GMT timezone
|
|
*/
|
|
static function gmt_date($timestamp) {
|
|
// Get the timezone offset in seconds
|
|
$timezone = date('O');
|
|
$timezoneOffset = (($timezone[0] == '-')?-1:1) * (substr($timezone,1,2)*3600) + (substr($timezone,3,2)*60);
|
|
|
|
return date('D d M Y h:i:s', $timestamp - $timezoneOffset) . ' GMT (' . $timezoneOffset . ')';
|
|
}
|
|
|
|
}
|
|
|
|
?>
|