Add wx headers and ext

wxheaders/wx/private/webrequest_curl.h

@@ -0,0 +1,202 @@
+///////////////////////////////////////////////////////////////////////////////
+// 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