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/**
@file
@author Stefan Frings
*/
#include "staticfilecontroller.h"
#include <QFileInfo>
#include <QDir>
#include <QDateTime>
StaticFileController::StaticFileController(QSettings* settings, QObject* parent)
:HttpRequestHandler(parent)
{
maxAge=settings->value("maxAge","60000").toInt();
encoding=settings->value("encoding","UTF-8").toString();
docroot=settings->value("path",".").toString();
if(!(docroot.startsWith(":/") || docroot.startsWith("qrc://")))
{
// Convert relative path to absolute, based on the directory of the config file.
#ifdef Q_OS_WIN32
if (QDir::isRelativePath(docroot) && settings->format()!=QSettings::NativeFormat)
#else
if (QDir::isRelativePath(docroot))
#endif
{
QFileInfo configFile(settings->fileName());
docroot=QFileInfo(configFile.absolutePath(),docroot).absoluteFilePath();
}
}
wDebug("StaticFileController: docroot=%s, encoding=%s, maxAge=%i",qPrintable(docroot),qPrintable(encoding),maxAge);
maxCachedFileSize=settings->value("maxCachedFileSize","65536").toInt();
cache.setMaxCost(settings->value("cacheSize","1000000").toInt());
cacheTimeout=settings->value("cacheTime","60000").toInt();
wDebug("StaticFileController: cache timeout=%i, size=%i",cacheTimeout,cache.maxCost());
}
void StaticFileController::service(HttpRequest& request, HttpResponse& response) {
QByteArray path=request.getPath();
// Check if we have the file in cache
qint64 now=QDateTime::currentMSecsSinceEpoch();
mutex.lock();
CacheEntry* entry=cache.object(path);
if (entry && (cacheTimeout==0 || entry->created>now-cacheTimeout)) {
QByteArray document=entry->document; //copy the cached document, because other threads may destroy the cached entry immediately after mutex unlock.
QByteArray filename=entry->filename;
mutex.unlock();
wDebug("StaticFileController: Cache hit for %s",path.data());
setContentType(filename,response);
response.setHeader("Cache-Control","max-age="+QByteArray::number(maxAge/1000));
response.write(document);
}
else {
mutex.unlock();
// The file is not in cache.
wDebug("StaticFileController: Cache miss for %s",path.data());
// Forbid access to files outside the docroot directory
if (path.contains("/..")) {
qWarning("StaticFileController: detected forbidden characters in path %s",path.data());
response.setStatus(403,"forbidden");
response.write("403 forbidden",true);
return;
}
// If the filename is a directory, append index.html.
if (QFileInfo(docroot+path).isDir()) {
path+="/index.html";
}
// Try to open the file
QFile file(docroot+path);
wDebug("StaticFileController: Open file %s",qPrintable(file.fileName()));
if (file.open(QIODevice::ReadOnly)) {
setContentType(path,response);
response.setHeader("Cache-Control","max-age="+QByteArray::number(maxAge/1000));
if (file.size()<=maxCachedFileSize) {
// Return the file content and store it also in the cache
entry=new CacheEntry();
while (!file.atEnd() && !file.error()) {
QByteArray buffer=file.read(65536);
response.write(buffer);
entry->document.append(buffer);
}
entry->created=now;
entry->filename=path;
mutex.lock();
cache.insert(request.getPath(),entry,entry->document.size());
mutex.unlock();
}
else {
// Return the file content, do not store in cache
while (!file.atEnd() && !file.error()) {
response.write(file.read(65536));
}
}
file.close();
}
else {
if (file.exists()) {
qWarning("StaticFileController: Cannot open existing file %s for reading",qPrintable(file.fileName()));
response.setStatus(403,"forbidden");
response.write("403 forbidden",true);
}
else {
response.setStatus(404,"not found");
response.write("404 not found",true);
}
}
}
}
void StaticFileController::setContentType(QString fileName, HttpResponse& response) const {
if (fileName.endsWith(".png")) {
response.setHeader("Content-Type", "image/png");
}
else if (fileName.endsWith(".jpg")) {
response.setHeader("Content-Type", "image/jpeg");
}
else if (fileName.endsWith(".gif")) {
response.setHeader("Content-Type", "image/gif");
}
else if (fileName.endsWith(".pdf")) {
response.setHeader("Content-Type", "application/pdf");
}
else if (fileName.endsWith(".txt")) {
response.setHeader("Content-Type", qPrintable("text/plain; charset="+encoding));
}
else if (fileName.endsWith(".html") || fileName.endsWith(".htm")) {
response.setHeader("Content-Type", qPrintable("text/html; charset="+encoding));
}
else if (fileName.endsWith(".css")) {
response.setHeader("Content-Type", "text/css");
}
else if (fileName.endsWith(".js")) {
response.setHeader("Content-Type", "text/javascript");
}
// Todo: add all of your content types
}
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