tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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nsJARProtocolHandler.cpp (2745B)

      1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* This Source Code Form is subject to the terms of the Mozilla Public
      3 * License, v. 2.0. If a copy of the MPL was not distributed with this
      4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      5 
      6 #include "mozilla/ClearOnShutdown.h"
      7 #include "nsJARProtocolHandler.h"
      8 #include "nsComponentManagerUtils.h"
      9 #include "nsCRT.h"
     10 #include "nsJARURI.h"
     11 #include "nsJARChannel.h"
     12 #include "nsString.h"
     13 #include "nsNetCID.h"
     14 #include "nsIMIMEService.h"
     15 #include "nsMimeTypes.h"
     16 #include "nsThreadUtils.h"
     17 
     18 static NS_DEFINE_CID(kZipReaderCacheCID, NS_ZIPREADERCACHE_CID);
     19 
     20 #define NS_JAR_CACHE_SIZE 32
     21 
     22 //-----------------------------------------------------------------------------
     23 
     24 mozilla::StaticRefPtr<nsJARProtocolHandler> gJarHandler;
     25 
     26 nsJARProtocolHandler::nsJARProtocolHandler() { MOZ_ASSERT(NS_IsMainThread()); }
     27 
     28 nsJARProtocolHandler::~nsJARProtocolHandler() {}
     29 
     30 nsresult nsJARProtocolHandler::Init() {
     31  nsresult rv;
     32 
     33  mJARCache = do_CreateInstance(kZipReaderCacheCID, &rv);
     34  if (NS_FAILED(rv)) return rv;
     35 
     36  rv = mJARCache->Init(NS_JAR_CACHE_SIZE);
     37  return rv;
     38 }
     39 
     40 nsIMIMEService* nsJARProtocolHandler::MimeService() {
     41  if (!mMimeService) mMimeService = do_GetService("@mozilla.org/mime;1");
     42 
     43  return mMimeService.get();
     44 }
     45 
     46 NS_IMPL_ISUPPORTS(nsJARProtocolHandler, nsIProtocolHandler,
     47                  nsISupportsWeakReference)
     48 
     49 already_AddRefed<nsJARProtocolHandler> nsJARProtocolHandler::GetSingleton() {
     50  if (!gJarHandler) {
     51    gJarHandler = new nsJARProtocolHandler();
     52    if (NS_SUCCEEDED(gJarHandler->Init())) {
     53      ClearOnShutdown(&gJarHandler);
     54    } else {
     55      gJarHandler = nullptr;
     56    }
     57  }
     58  return do_AddRef(gJarHandler);
     59 }
     60 
     61 ////////////////////////////////////////////////////////////////////////////////
     62 // nsIProtocolHandler methods:
     63 
     64 NS_IMETHODIMP
     65 nsJARProtocolHandler::GetScheme(nsACString& result) {
     66  result.AssignLiteral("jar");
     67  return NS_OK;
     68 }
     69 
     70 NS_IMETHODIMP
     71 nsJARProtocolHandler::NewChannel(nsIURI* uri, nsILoadInfo* aLoadInfo,
     72                                 nsIChannel** result) {
     73  RefPtr<nsJARChannel> chan = new nsJARChannel();
     74  if (!chan) {
     75    return NS_ERROR_OUT_OF_MEMORY;
     76  }
     77 
     78  nsresult rv = chan->Init(uri);
     79  if (NS_FAILED(rv)) {
     80    return rv;
     81  }
     82 
     83  // set the loadInfo on the new channel
     84  rv = chan->SetLoadInfo(aLoadInfo);
     85  if (NS_FAILED(rv)) {
     86    return rv;
     87  }
     88 
     89  *result = chan.forget().take();
     90  return NS_OK;
     91 }
     92 
     93 NS_IMETHODIMP
     94 nsJARProtocolHandler::AllowPort(int32_t port, const char* scheme,
     95                                bool* _retval) {
     96  // don't override anything.
     97  *_retval = false;
     98  return NS_OK;
     99 }
    100 
    101 ////////////////////////////////////////////////////////////////////////////////