gecko-dev/modules/libjar/nsJARProtocolHandler.cpp
2011-10-17 10:59:28 -04:00

203 lines
5.5 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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):
* Benjamin Smedberg <benjamin@smedbergs.us>
*
* 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 ***** */
#include "nsAutoPtr.h"
#include "nsJARProtocolHandler.h"
#include "nsIIOService.h"
#include "nsCRT.h"
#include "nsIComponentManager.h"
#include "nsIServiceManager.h"
#include "nsJARURI.h"
#include "nsIURL.h"
#include "nsJARChannel.h"
#include "nsXPIDLString.h"
#include "nsString.h"
#include "nsNetCID.h"
#include "nsIMIMEService.h"
#include "nsMimeTypes.h"
static NS_DEFINE_CID(kZipReaderCacheCID, NS_ZIPREADERCACHE_CID);
#define NS_JAR_CACHE_SIZE 32
//-----------------------------------------------------------------------------
nsJARProtocolHandler *gJarHandler = nsnull;
nsJARProtocolHandler::nsJARProtocolHandler()
{
}
nsJARProtocolHandler::~nsJARProtocolHandler()
{
}
nsresult
nsJARProtocolHandler::Init()
{
nsresult rv;
mJARCache = do_CreateInstance(kZipReaderCacheCID, &rv);
if (NS_FAILED(rv)) return rv;
rv = mJARCache->Init(NS_JAR_CACHE_SIZE);
return rv;
}
nsIMIMEService *
nsJARProtocolHandler::MimeService()
{
if (!mMimeService)
mMimeService = do_GetService("@mozilla.org/mime;1");
return mMimeService.get();
}
NS_IMPL_THREADSAFE_ISUPPORTS3(nsJARProtocolHandler,
nsIJARProtocolHandler,
nsIProtocolHandler,
nsISupportsWeakReference)
nsJARProtocolHandler*
nsJARProtocolHandler::GetSingleton()
{
if (!gJarHandler) {
gJarHandler = new nsJARProtocolHandler();
if (!gJarHandler)
return nsnull;
NS_ADDREF(gJarHandler);
nsresult rv = gJarHandler->Init();
if (NS_FAILED(rv)) {
NS_RELEASE(gJarHandler);
return nsnull;
}
}
NS_ADDREF(gJarHandler);
return gJarHandler;
}
NS_IMETHODIMP
nsJARProtocolHandler::GetJARCache(nsIZipReaderCache* *result)
{
*result = mJARCache;
NS_ADDREF(*result);
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// nsIProtocolHandler methods:
NS_IMETHODIMP
nsJARProtocolHandler::GetScheme(nsACString &result)
{
result.AssignLiteral("jar");
return NS_OK;
}
NS_IMETHODIMP
nsJARProtocolHandler::GetDefaultPort(PRInt32 *result)
{
*result = -1; // no port for JAR: URLs
return NS_OK;
}
NS_IMETHODIMP
nsJARProtocolHandler::GetProtocolFlags(PRUint32 *result)
{
// URI_LOADABLE_BY_ANYONE, since it's our inner URI that will matter
// anyway.
*result = URI_NORELATIVE | URI_NOAUTH | URI_LOADABLE_BY_ANYONE;
/* Although jar uris have their own concept of relative urls
it is very different from the standard behaviour, so we
have to say norelative here! */
return NS_OK;
}
NS_IMETHODIMP
nsJARProtocolHandler::NewURI(const nsACString &aSpec,
const char *aCharset,
nsIURI *aBaseURI,
nsIURI **result)
{
nsresult rv = NS_OK;
nsRefPtr<nsJARURI> jarURI = new nsJARURI();
if (!jarURI)
return NS_ERROR_OUT_OF_MEMORY;
rv = jarURI->Init(aCharset);
NS_ENSURE_SUCCESS(rv, rv);
rv = jarURI->SetSpecWithBase(aSpec, aBaseURI);
if (NS_FAILED(rv))
return rv;
NS_ADDREF(*result = jarURI);
return rv;
}
NS_IMETHODIMP
nsJARProtocolHandler::NewChannel(nsIURI *uri, nsIChannel **result)
{
nsJARChannel *chan = new nsJARChannel();
if (!chan)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(chan);
nsresult rv = chan->Init(uri);
if (NS_FAILED(rv)) {
NS_RELEASE(chan);
return rv;
}
*result = chan;
return NS_OK;
}
NS_IMETHODIMP
nsJARProtocolHandler::AllowPort(PRInt32 port, const char *scheme, bool *_retval)
{
// don't override anything.
*_retval = false;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////