uriloader/exthandler/ExternalHelperAppChild.cpp

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=2 et sw=2 tw=80: */
   3 /****** BEGIN LICENSE BLOCK *****
   4  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   5  *
   6  * The contents of this file are subject to the Mozilla Public License Version
   7  * 1.1 (the "License"); you may not use this file except in compliance with
   8  * the License. You may obtain a copy of the License at
   9  * http://www.mozilla.org/MPL/
  10  *
  11  * Software distributed under the License is distributed on an "AS IS" basis,
  12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  13  * for the specific language governing rights and limitations under the
  14  * License.
  15  *
  16  * The Original Code is IPC External Helper App module.
  17  *
  18  * The Initial Developer of the Original Code is
  19  * Brian Crowder <crowderbt@gmail.com>.
  20  * Portions created by the Initial Developer are Copyright (C) 2010
  21  * the Initial Developer. All Rights Reserved.
  22  *
  23  * Contributor(s):
  24  *
  25  * Alternatively, the contents of this file may be used under the terms of
  26  * either the GNU General Public License Version 2 or later (the "GPL"), or
  27  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  28  * in which case the provisions of the GPL or the LGPL are applicable instead
  29  * of those above. If you wish to allow use of your version of this file only
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  33  * and other provisions required by the GPL or the LGPL. If you do not delete
  34  * the provisions above, a recipient may use your version of this file under
  35  * the terms of any one of the MPL, the GPL or the LGPL.
  36  *
  37  * ***** END LICENSE BLOCK ***** */
  38
  39 #include "ExternalHelperAppChild.h"
  40 #include "nsIInputStream.h"
  41 #include "nsIRequest.h"
  42 #include "nsIResumableChannel.h"
  43 #include "nsNetUtil.h"
  44
  45 namespace mozilla {
  46 namespace dom {
  47
  48 NS_IMPL_ISUPPORTS2(ExternalHelperAppChild,
  49                    nsIStreamListener,
  50                    nsIRequestObserver)
  51
  52 ExternalHelperAppChild::ExternalHelperAppChild()
  53   : mStatus(NS_OK)
  54 {
  55 }
  56
  57 ExternalHelperAppChild::~ExternalHelperAppChild()
  58 {
  59 }
  60
  61 //-----------------------------------------------------------------------------
  62 // nsIStreamListener
  63 //-----------------------------------------------------------------------------
  64 NS_IMETHODIMP
  65 ExternalHelperAppChild::OnDataAvailable(nsIRequest *request,
  66                                         nsISupports *ctx,
  67                                         nsIInputStream *input,
  68                                         PRUint32 offset,
  69                                         PRUint32 count)
  70 {
  71   if (NS_FAILED(mStatus))
  72     return mStatus;
  73
  74   nsCString data;
  75   nsresult rv = NS_ReadInputStreamToString(input, data, count);
  76   if (NS_FAILED(rv))
  77     return rv;
  78
  79   if (!SendOnDataAvailable(data, offset, count))
  80     return NS_ERROR_UNEXPECTED;
  81
  82   return NS_OK;
  83 }
  84
  85 //////////////////////////////////////////////////////////////////////////////
  86 // nsIRequestObserver
  87 //////////////////////////////////////////////////////////////////////////////
  88
  89 NS_IMETHODIMP
  90 ExternalHelperAppChild::OnStartRequest(nsIRequest *request, nsISupports *ctx)
  91 {
  92   nsresult rv = mHandler->OnStartRequest(request, ctx);
  93   NS_ENSURE_SUCCESS(rv, NS_ERROR_UNEXPECTED);
  94
  95   nsCString entityID;
  96   nsCOMPtr<nsIResumableChannel> resumable(do_QueryInterface(request));
  97   if (resumable)
  98     resumable->GetEntityID(entityID);
  99   SendOnStartRequest(entityID);
 100   return NS_OK;
 101 }
 102
 103
 104 NS_IMETHODIMP
 105 ExternalHelperAppChild::OnStopRequest(nsIRequest *request,
 106                                       nsISupports *ctx,
 107                                       nsresult status)
 108 {
 109   nsresult rv = mHandler->OnStopRequest(request, ctx, status);
 110   SendOnStopRequest(status);
 111
 112   NS_ENSURE_SUCCESS(rv, NS_ERROR_UNEXPECTED);
 113   return NS_OK;
 114 }
 115
 116
 117 bool
 118 ExternalHelperAppChild::RecvCancel(const nsresult& aStatus)
 119 {
 120   mStatus = aStatus;
 121   return true;
 122 }
 123
 124 } // namespace dom
 125 } // namespace mozilla