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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
 *
 * ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *   Brian Ryner <bryner@brianryner.com>
 *   Kai Engert <kengert@redhat.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef _NSNSSCALLBACKS_H_
#define _NSNSSCALLBACKS_H_

#include "pk11func.h"
#include "nspr.h"
#include "ocspt.h"
#include "nsIStreamLoader.h"

char* PR_CALLBACK
PK11PasswordPrompt(PK11SlotInfo *slot, PRBool retry, void* arg);

void PR_CALLBACK HandshakeCallback(PRFileDesc *fd, void *client_data);
SECStatus PR_CALLBACK AuthCertificateCallback(void* client_data, PRFileDesc* fd,
                                              PRBool checksig, PRBool isServer);

SECStatus RegisterMyOCSPAIAInfoCallback();
SECStatus UnregisterMyOCSPAIAInfoCallback();

class nsHTTPListener : public nsIStreamLoaderObserver
{
private:
  // For XPCOM implementations that are not a base class for some other
  // class, it is good practice to make the destructor non-virtual and
  // private.  Then the only way to delete the object is via Release.
  ~nsHTTPListener();

public:
  nsHTTPListener();

  NS_DECL_ISUPPORTS
  NS_DECL_NSISTREAMLOADEROBSERVER

  nsCOMPtr<nsIStreamLoader> mLoader;

  nsresult mResultCode;

  PRBool mHttpRequestSucceeded;
  PRUint16 mHttpResponseCode;
  nsCString mHttpResponseContentType;

  const PRUint8* mResultData; // not owned, refers to mLoader
  PRUint32 mResultLen;
  
  nsresult InitLocks();
  
  PRLock *mLock;
  PRCondVar *mCondition;
  volatile PRBool mWaitFlag;
  
  PRBool mResponsibleForDoneSignal;
  void send_done_signal();

  // no nsCOMPtr. When I use it, I get assertions about
  //   loadgroup not being thread safe.
  // So, let's use a raw pointer and ensure we only create and destroy
  // it on the network thread ourselves.
  nsILoadGroup *mLoadGroup;
  PRThread *mLoadGroupOwnerThread;
  void FreeLoadGroup(PRBool aCancelLoad);
};

class nsNSSHttpServerSession
{
public:
  nsCString mHost;
  PRUint16 mPort;  

  static SECStatus createSessionFcn(const char *host,
                                    PRUint16 portnum,
                                    SEC_HTTP_SERVER_SESSION *pSession);
};

class nsNSSHttpRequestSession
{
protected:
  PRInt32 mRefCount;

public:
  static SECStatus createFcn(SEC_HTTP_SERVER_SESSION session,
                             const char *http_protocol_variant,
                             const char *path_and_query_string,
                             const char *http_request_method, 
                             const PRIntervalTime timeout, 
                             SEC_HTTP_REQUEST_SESSION *pRequest);

  SECStatus setPostDataFcn(const char *http_data, 
                           const PRUint32 http_data_len,
                           const char *http_content_type);

  SECStatus addHeaderFcn(const char *http_header_name, 
                         const char *http_header_value);

  SECStatus trySendAndReceiveFcn(PRPollDesc **pPollDesc,
                                 PRUint16 *http_response_code, 
                                 const char **http_response_content_type, 
                                 const char **http_response_headers, 
                                 const char **http_response_data, 
                                 PRUint32 *http_response_data_len);

  SECStatus cancelFcn();
  SECStatus freeFcn();

  void AddRef();
  void Release();

  nsCString mURL;
  nsCString mRequestMethod;
  
  PRBool mHasPostData;
  nsCString mPostData;
  nsCString mPostContentType;
  
  PRIntervalTime mTimeoutInterval;
  
  nsCOMPtr<nsHTTPListener> mListener;
  
protected:
  nsNSSHttpRequestSession();
  ~nsNSSHttpRequestSession();

  SECStatus internal_send_receive_attempt(PRBool &retryable_error,
                                          PRPollDesc **pPollDesc,
                                          PRUint16 *http_response_code,
                                          const char **http_response_content_type,
                                          const char **http_response_headers,
                                          const char **http_response_data,
                                          PRUint32 *http_response_data_len);
};

class nsNSSHttpInterface
{
public:
  static SECStatus createSessionFcn(const char *host,
                                    PRUint16 portnum,
                                    SEC_HTTP_SERVER_SESSION *pSession)
  {
    return nsNSSHttpServerSession::createSessionFcn(host, portnum, pSession);
  }

  static SECStatus keepAliveFcn(SEC_HTTP_SERVER_SESSION session,
                                PRPollDesc **pPollDesc)
  {
    // Not yet implemented, however, Necko does transparent keep-alive 
    // anyway, when enabled in Necko's prefs.
    return SECSuccess;
  }

  static SECStatus freeSessionFcn(SEC_HTTP_SERVER_SESSION session)
  {
    delete static_cast<nsNSSHttpServerSession*>(session);
    return SECSuccess;
  }

  static SECStatus createFcn(SEC_HTTP_SERVER_SESSION session,
                             const char *http_protocol_variant,
                             const char *path_and_query_string,
                             const char *http_request_method, 
                             const PRIntervalTime timeout, 
                             SEC_HTTP_REQUEST_SESSION *pRequest)
  {
    return nsNSSHttpRequestSession::createFcn(session, http_protocol_variant,
                                     path_and_query_string, http_request_method, 
                                     timeout, pRequest);
  }

  static SECStatus setPostDataFcn(SEC_HTTP_REQUEST_SESSION request, 
                                  const char *http_data, 
                                  const PRUint32 http_data_len,
                                  const char *http_content_type)
  {
    return static_cast<nsNSSHttpRequestSession*>(request)
            ->setPostDataFcn(http_data, http_data_len, http_content_type);
  }

  static SECStatus addHeaderFcn(SEC_HTTP_REQUEST_SESSION request,
                                const char *http_header_name, 
                                const char *http_header_value)
  {
    return static_cast<nsNSSHttpRequestSession*>(request)
            ->addHeaderFcn(http_header_name, http_header_value);
  }

  static SECStatus trySendAndReceiveFcn(SEC_HTTP_REQUEST_SESSION request, 
                                        PRPollDesc **pPollDesc,
                                        PRUint16 *http_response_code, 
                                        const char **http_response_content_type, 
                                        const char **http_response_headers, 
                                        const char **http_response_data, 
                                        PRUint32 *http_response_data_len)
  {
    return static_cast<nsNSSHttpRequestSession*>(request)
            ->trySendAndReceiveFcn(pPollDesc, http_response_code, http_response_content_type, 
                     http_response_headers, http_response_data, http_response_data_len);
  }

  static SECStatus cancelFcn(SEC_HTTP_REQUEST_SESSION request)
  {
    return static_cast<nsNSSHttpRequestSession*>(request)
            ->cancelFcn();
  }

  static SECStatus freeFcn(SEC_HTTP_REQUEST_SESSION request)
  {
    return static_cast<nsNSSHttpRequestSession*>(request)
            ->freeFcn();
  }

  static void initTable();
  static SEC_HttpClientFcn sNSSInterfaceTable;

  void registerHttpClient();
  void unregisterHttpClient();
};

#endif // _NSNSSCALLBACKS_H_