michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* vim:set ts=4 sw=4 sts=4 et: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "nsViewSourceHandler.h"
michael@0: #include "nsViewSourceChannel.h"
michael@0: #include "nsNetUtil.h"
michael@0: #include "nsSimpleNestedURI.h"
michael@0: 
michael@0: #define VIEW_SOURCE "view-source"
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: 
michael@0: NS_IMPL_ISUPPORTS(nsViewSourceHandler, nsIProtocolHandler)
michael@0: 
michael@0: ////////////////////////////////////////////////////////////////////////////////
michael@0: // nsIProtocolHandler methods:
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsViewSourceHandler::GetScheme(nsACString &result)
michael@0: {
michael@0:     result.AssignLiteral(VIEW_SOURCE);
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsViewSourceHandler::GetDefaultPort(int32_t *result)
michael@0: {
michael@0:     *result = -1;
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsViewSourceHandler::GetProtocolFlags(uint32_t *result)
michael@0: {
michael@0:     *result = URI_NORELATIVE | URI_NOAUTH | URI_LOADABLE_BY_ANYONE |
michael@0:         URI_NON_PERSISTABLE;
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsViewSourceHandler::NewURI(const nsACString &aSpec,
michael@0:                             const char *aCharset,
michael@0:                             nsIURI *aBaseURI,
michael@0:                             nsIURI **aResult)
michael@0: {
michael@0:     *aResult = nullptr;
michael@0: 
michael@0:     // Extract inner URL and normalize to ASCII.  This is done to properly
michael@0:     // support IDN in cases like "view-source:http://www.szalagavató.hu/"
michael@0: 
michael@0:     int32_t colon = aSpec.FindChar(':');
michael@0:     if (colon == kNotFound)
michael@0:         return NS_ERROR_MALFORMED_URI;
michael@0: 
michael@0:     nsCOMPtr<nsIURI> innerURI;
michael@0:     nsresult rv = NS_NewURI(getter_AddRefs(innerURI),
michael@0:                             Substring(aSpec, colon + 1), aCharset, aBaseURI);
michael@0:     if (NS_FAILED(rv))
michael@0:         return rv;
michael@0: 
michael@0:     nsAutoCString asciiSpec;
michael@0:     rv = innerURI->GetAsciiSpec(asciiSpec);
michael@0:     if (NS_FAILED(rv))
michael@0:         return rv;
michael@0: 
michael@0:     // put back our scheme and construct a simple-uri wrapper
michael@0: 
michael@0:     asciiSpec.Insert(VIEW_SOURCE ":", 0);
michael@0: 
michael@0:     // We can't swap() from an nsRefPtr<nsSimpleNestedURI> to an nsIURI**,
michael@0:     // sadly.
michael@0:     nsSimpleNestedURI* ourURI = new nsSimpleNestedURI(innerURI);
michael@0:     nsCOMPtr<nsIURI> uri = ourURI;
michael@0:     if (!uri)
michael@0:         return NS_ERROR_OUT_OF_MEMORY;
michael@0: 
michael@0:     rv = ourURI->SetSpec(asciiSpec);
michael@0:     if (NS_FAILED(rv))
michael@0:         return rv;
michael@0: 
michael@0:     // Make the URI immutable so it's impossible to get it out of sync
michael@0:     // with its inner URI.
michael@0:     ourURI->SetMutable(false);
michael@0: 
michael@0:     uri.swap(*aResult);
michael@0:     return rv;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP
michael@0: nsViewSourceHandler::NewChannel(nsIURI* uri, nsIChannel* *result)
michael@0: {
michael@0:     NS_ENSURE_ARG_POINTER(uri);
michael@0:     nsViewSourceChannel *channel = new nsViewSourceChannel();
michael@0:     if (!channel)
michael@0:         return NS_ERROR_OUT_OF_MEMORY;
michael@0:     NS_ADDREF(channel);
michael@0: 
michael@0:     nsresult rv = channel->Init(uri);
michael@0:     if (NS_FAILED(rv)) {
michael@0:         NS_RELEASE(channel);
michael@0:         return rv;
michael@0:     }
michael@0: 
michael@0:     *result = static_cast<nsIViewSourceChannel*>(channel);
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: nsViewSourceHandler::NewSrcdocChannel(nsIURI* uri, const nsAString &srcdoc,
michael@0:                                       nsIURI* baseURI, nsIChannel* *result)
michael@0: {
michael@0:     NS_ENSURE_ARG_POINTER(uri);
michael@0:     nsViewSourceChannel *channel = new nsViewSourceChannel();
michael@0:     if (!channel)
michael@0:         return NS_ERROR_OUT_OF_MEMORY;
michael@0:     NS_ADDREF(channel);
michael@0: 
michael@0:     nsresult rv = channel->InitSrcdoc(uri, srcdoc, baseURI);
michael@0:     if (NS_FAILED(rv)) {
michael@0:         NS_RELEASE(channel);
michael@0:         return rv;
michael@0:     }
michael@0: 
michael@0:     *result = static_cast<nsIViewSourceChannel*>(channel);
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: NS_IMETHODIMP 
michael@0: nsViewSourceHandler::AllowPort(int32_t port, const char *scheme, bool *_retval)
michael@0: {
michael@0:     // don't override anything.  
michael@0:     *_retval = false;
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: nsViewSourceHandler::nsViewSourceHandler()
michael@0: {
michael@0:     gInstance = this;
michael@0: }
michael@0: 
michael@0: nsViewSourceHandler::~nsViewSourceHandler()
michael@0: {
michael@0:     gInstance = nullptr;
michael@0: }
michael@0: 
michael@0: nsViewSourceHandler* nsViewSourceHandler::gInstance = nullptr;
michael@0: 
michael@0: nsViewSourceHandler*
michael@0: nsViewSourceHandler::GetInstance()
michael@0: {
michael@0:     return gInstance;
michael@0: }