mirror of
https://github.com/f4exb/sdrangel.git
synced 2024-11-17 22:01:45 -05:00
105 lines
2.8 KiB
C++
105 lines
2.8 KiB
C++
/**
|
|
@file
|
|
@author Stefan Frings
|
|
*/
|
|
|
|
#ifndef STATICFILECONTROLLER_H
|
|
#define STATICFILECONTROLLER_H
|
|
|
|
#include <QCache>
|
|
#include <QMutex>
|
|
#include "httpglobal.h"
|
|
#include "httprequest.h"
|
|
#include "httpresponse.h"
|
|
#include "httprequesthandler.h"
|
|
|
|
#include "export.h"
|
|
|
|
namespace qtwebapp {
|
|
|
|
/**
|
|
Delivers static files. It is usually called by the applications main request handler when
|
|
the caller requests a path that is mapped to static files.
|
|
<p>
|
|
The following settings are required in the config file:
|
|
<code><pre>
|
|
path=../docroot
|
|
encoding=UTF-8
|
|
maxAge=60000
|
|
cacheTime=60000
|
|
cacheSize=1000000
|
|
maxCachedFileSize=65536
|
|
</pre></code>
|
|
The path is relative to the directory of the config file. In case of windows, if the
|
|
settings are in the registry, the path is relative to the current working directory.
|
|
<p>
|
|
The encoding is sent to the web browser in case of text and html files.
|
|
<p>
|
|
The cache improves performance of small files when loaded from a network
|
|
drive. Large files are not cached. Files are cached as long as possible,
|
|
when cacheTime=0. The maxAge value (in msec!) controls the remote browsers cache.
|
|
<p>
|
|
Do not instantiate this class in each request, because this would make the file cache
|
|
useless. Better create one instance during start-up and call it when the application
|
|
received a related HTTP request.
|
|
*/
|
|
|
|
class HttpDocrootSettings;
|
|
|
|
class HTTPSERVER_API StaticFileController : public HttpRequestHandler {
|
|
Q_OBJECT
|
|
Q_DISABLE_COPY(StaticFileController)
|
|
public:
|
|
|
|
/** Constructor with Qt settings*/
|
|
StaticFileController(QSettings* settings, QObject* parent = NULL);
|
|
|
|
/** Constructor with settings structure */
|
|
StaticFileController(const HttpDocrootSettings& settings, QObject* parent = NULL);
|
|
|
|
/** Generates the response from HTTP request */
|
|
void service(HttpRequest& request, HttpResponse& response);
|
|
|
|
/** Generates the response directly from the path */
|
|
void service(QByteArray& path, HttpResponse& response);
|
|
|
|
private:
|
|
|
|
/** Encoding of text files */
|
|
QString encoding;
|
|
|
|
/** Root directory of documents */
|
|
QString docroot;
|
|
|
|
/** Maximum age of files in the browser cache */
|
|
int maxAge;
|
|
|
|
struct CacheEntry {
|
|
QByteArray document;
|
|
qint64 created;
|
|
QByteArray filename;
|
|
};
|
|
|
|
/** Timeout for each cached file */
|
|
int cacheTimeout;
|
|
|
|
/** Maximum size of files in cache, larger files are not cached */
|
|
int maxCachedFileSize;
|
|
|
|
/** Cache storage */
|
|
QCache<QString,CacheEntry> cache;
|
|
|
|
/** Used to synchronize cache access for threads */
|
|
QMutex mutex;
|
|
|
|
/** Settings flag */
|
|
bool useQtSettings;
|
|
|
|
/** Set a content-type header in the response depending on the ending of the filename */
|
|
void setContentType(QString file, HttpResponse& response) const;
|
|
};
|
|
|
|
} // end of namespace
|
|
|
|
#endif // STATICFILECONTROLLER_H
|