gecko-dev/netwerk/protocol/viewsource/nsViewSourceHandler.cpp

152 lines
4.7 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim:set ts=4 sw=4 sts=4 et: */
/* ***** 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):
* Chak Nanga <chak@netscape.com>
* Darin Fisher <darin@meer.net>
*
* 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 "nsViewSourceHandler.h"
#include "nsViewSourceChannel.h"
#include "nsNetUtil.h"
#include "nsSimpleNestedURI.h"
#define VIEW_SOURCE "view-source"
////////////////////////////////////////////////////////////////////////////////
NS_IMPL_ISUPPORTS1(nsViewSourceHandler, nsIProtocolHandler)
////////////////////////////////////////////////////////////////////////////////
// nsIProtocolHandler methods:
NS_IMETHODIMP
nsViewSourceHandler::GetScheme(nsACString &result)
{
result.AssignLiteral(VIEW_SOURCE);
return NS_OK;
}
NS_IMETHODIMP
nsViewSourceHandler::GetDefaultPort(PRInt32 *result)
{
*result = -1;
return NS_OK;
}
NS_IMETHODIMP
nsViewSourceHandler::GetProtocolFlags(PRUint32 *result)
{
*result = URI_NORELATIVE | URI_NOAUTH | URI_LOADABLE_BY_ANYONE |
URI_NON_PERSISTABLE;
return NS_OK;
}
NS_IMETHODIMP
nsViewSourceHandler::NewURI(const nsACString &aSpec,
const char *aCharset,
nsIURI *aBaseURI,
nsIURI **aResult)
{
*aResult = nsnull;
// Extract inner URL and normalize to ASCII. This is done to properly
// support IDN in cases like "view-source:http://www.szalagavató.hu/"
PRInt32 colon = aSpec.FindChar(':');
if (colon == kNotFound)
return NS_ERROR_MALFORMED_URI;
nsCOMPtr<nsIURI> innerURI;
nsresult rv = NS_NewURI(getter_AddRefs(innerURI),
Substring(aSpec, colon + 1), aCharset, aBaseURI);
if (NS_FAILED(rv))
return rv;
nsCAutoString asciiSpec;
rv = innerURI->GetAsciiSpec(asciiSpec);
if (NS_FAILED(rv))
return rv;
// put back our scheme and construct a simple-uri wrapper
asciiSpec.Insert(VIEW_SOURCE ":", 0);
// We can't swap() from an nsRefPtr<nsSimpleNestedURI> to an nsIURI**,
// sadly.
nsSimpleNestedURI* ourURI = new nsSimpleNestedURI(innerURI);
nsCOMPtr<nsIURI> uri = ourURI;
if (!uri)
return NS_ERROR_OUT_OF_MEMORY;
rv = ourURI->SetSpec(asciiSpec);
if (NS_FAILED(rv))
return rv;
// Make the URI immutable so it's impossible to get it out of sync
// with its inner URI.
ourURI->SetMutable(PR_FALSE);
uri.swap(*aResult);
return rv;
}
NS_IMETHODIMP
nsViewSourceHandler::NewChannel(nsIURI* uri, nsIChannel* *result)
{
NS_ENSURE_ARG_POINTER(uri);
nsViewSourceChannel *channel = new nsViewSourceChannel();
if (!channel)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(channel);
nsresult rv = channel->Init(uri);
if (NS_FAILED(rv)) {
NS_RELEASE(channel);
return rv;
}
*result = static_cast<nsIViewSourceChannel*>(channel);
return NS_OK;
}
NS_IMETHODIMP
nsViewSourceHandler::AllowPort(PRInt32 port, const char *scheme, PRBool *_retval)
{
// don't override anything.
*_retval = PR_FALSE;
return NS_OK;
}