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///////////////////////////////////////////////////////////////////////////////
// Name: wx/webrequest_curl.h
// Purpose: wxWebRequest implementation using libcurl
// Author: Tobias Taschner
// Created: 2018-10-25
// Copyright: (c) 2018 wxWidgets development team
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_WEBREQUEST_CURL_H
#define _WX_WEBREQUEST_CURL_H
#if wxUSE_WEBREQUEST_CURL
#include "wx/private/webrequest.h"
#include "wx/thread.h"
#include "wx/vector.h"
#include "wx/timer.h"
#include "wx/hashmap.h"
#include "curl/curl.h"
class wxWebRequestCURL;
class wxWebResponseCURL;
class wxWebSessionCURL;
class SocketPoller;
class wxWebAuthChallengeCURL : public wxWebAuthChallengeImpl
{
public:
wxWebAuthChallengeCURL(wxWebAuthChallenge::Source source,
wxWebRequestCURL& request);
void SetCredentials(const wxWebCredentials& cred) wxOVERRIDE;
private:
wxWebRequestCURL& m_request;
wxDECLARE_NO_COPY_CLASS(wxWebAuthChallengeCURL);
};
class wxWebRequestCURL : public wxWebRequestImpl
{
public:
wxWebRequestCURL(wxWebSession& session,
wxWebSessionCURL& sessionImpl,
wxEvtHandler* handler,
const wxString& url,
int id);
~wxWebRequestCURL();
void Start() wxOVERRIDE;
wxWebResponseImplPtr GetResponse() const wxOVERRIDE
{ return m_response; }
wxWebAuthChallengeImplPtr GetAuthChallenge() const wxOVERRIDE
{ return m_authChallenge; }
wxFileOffset GetBytesSent() const wxOVERRIDE;
wxFileOffset GetBytesExpectedToSend() const wxOVERRIDE;
CURL* GetHandle() const { return m_handle; }
wxWebRequestHandle GetNativeHandle() const wxOVERRIDE
{
return (wxWebRequestHandle)GetHandle();
}
bool StartRequest();
void HandleCompletion();
wxString GetError() const;
// Method called from libcurl callback
size_t CURLOnRead(char* buffer, size_t size);
private:
void DoCancel() wxOVERRIDE;
wxWebSessionCURL& m_sessionImpl;
CURL* m_handle;
char m_errorBuffer[CURL_ERROR_SIZE];
struct curl_slist *m_headerList;
wxObjectDataPtr<wxWebResponseCURL> m_response;
wxObjectDataPtr<wxWebAuthChallengeCURL> m_authChallenge;
wxFileOffset m_bytesSent;
void DestroyHeaderList();
wxDECLARE_NO_COPY_CLASS(wxWebRequestCURL);
};
class wxWebResponseCURL : public wxWebResponseImpl
{
public:
explicit wxWebResponseCURL(wxWebRequestCURL& request);
wxFileOffset GetContentLength() const wxOVERRIDE;
wxString GetURL() const wxOVERRIDE;
wxString GetHeader(const wxString& name) const wxOVERRIDE;
int GetStatus() const wxOVERRIDE;
wxString GetStatusText() const wxOVERRIDE { return m_statusText; }
// Methods called from libcurl callbacks
size_t CURLOnWrite(void *buffer, size_t size);
size_t CURLOnHeader(const char* buffer, size_t size);
int CURLOnProgress(curl_off_t);
private:
wxWebRequestHeaderMap m_headers;
wxString m_statusText;
wxFileOffset m_knownDownloadSize;
CURL* GetHandle() const
{ return static_cast<wxWebRequestCURL&>(m_request).GetHandle(); }
wxDECLARE_NO_COPY_CLASS(wxWebResponseCURL);
};
class wxWebSessionCURL : public wxWebSessionImpl, public wxEvtHandler
{
public:
wxWebSessionCURL();
~wxWebSessionCURL();
wxWebRequestImplPtr
CreateRequest(wxWebSession& session,
wxEvtHandler* handler,
const wxString& url,
int id = wxID_ANY) wxOVERRIDE;
wxVersionInfo GetLibraryVersionInfo() wxOVERRIDE;
wxWebSessionHandle GetNativeHandle() const wxOVERRIDE
{
return (wxWebSessionHandle)m_handle;
}
bool StartRequest(wxWebRequestCURL& request);
void CancelRequest(wxWebRequestCURL* request);
void RequestHasTerminated(wxWebRequestCURL* request);
static bool CurlRuntimeAtLeastVersion(unsigned int, unsigned int,
unsigned int);
private:
static int TimerCallback(CURLM*, long, void*);
static int SocketCallback(CURL*, curl_socket_t, int, void*, void*);
void ProcessTimerCallback(long);
void TimeoutNotification(wxTimerEvent&);
void ProcessTimeoutNotification();
void ProcessSocketCallback(CURL*, curl_socket_t, int);
void ProcessSocketPollerResult(wxThreadEvent&);
void CheckForCompletedTransfers();
void FailRequest(CURL*, const wxString&);
void StopActiveTransfer(CURL*);
void RemoveActiveSocket(CURL*);
WX_DECLARE_HASH_MAP(CURL*, wxWebRequestCURL*, wxPointerHash, \
wxPointerEqual, TransferSet);
WX_DECLARE_HASH_MAP(CURL*, curl_socket_t, wxPointerHash, \
wxPointerEqual, CurlSocketMap);
TransferSet m_activeTransfers;
CurlSocketMap m_activeSockets;
SocketPoller* m_socketPoller;
wxTimer m_timeoutTimer;
CURLM* m_handle;
static int ms_activeSessions;
static unsigned int ms_runtimeVersion;
wxDECLARE_NO_COPY_CLASS(wxWebSessionCURL);
};
class wxWebSessionFactoryCURL : public wxWebSessionFactory
{
public:
wxWebSessionImpl* Create() wxOVERRIDE
{ return new wxWebSessionCURL(); }
};
#endif // wxUSE_WEBREQUEST_CURL
#endif
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