mirror of
https://github.com/classilla/tenfourfox.git
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217 lines
6.5 KiB
C++
217 lines
6.5 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim:set ts=4 sw=4 sts=4 et cin: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/*
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A protocol handler for ``chrome:''
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*/
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#include "nsChromeProtocolHandler.h"
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#include "nsChromeRegistry.h"
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#include "nsCOMPtr.h"
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#include "nsThreadUtils.h"
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#include "nsIChannel.h"
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#include "nsIChromeRegistry.h"
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#include "nsIFile.h"
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#include "nsIFileChannel.h"
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#include "nsIIOService.h"
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#include "nsILoadGroup.h"
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#include "nsIScriptSecurityManager.h"
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#include "nsIStandardURL.h"
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#include "nsNetUtil.h"
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#include "nsNetCID.h"
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#include "nsIURL.h"
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#include "nsString.h"
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#include "nsStandardURL.h"
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////////////////////////////////////////////////////////////////////////////////
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NS_IMPL_ISUPPORTS(nsChromeProtocolHandler,
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nsIProtocolHandler,
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nsISupportsWeakReference)
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////////////////////////////////////////////////////////////////////////////////
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// nsIProtocolHandler methods:
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NS_IMETHODIMP
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nsChromeProtocolHandler::GetScheme(nsACString &result)
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{
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result.AssignLiteral("chrome");
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return NS_OK;
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}
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NS_IMETHODIMP
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nsChromeProtocolHandler::GetDefaultPort(int32_t *result)
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{
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*result = -1; // no port for chrome: URLs
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return NS_OK;
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}
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NS_IMETHODIMP
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nsChromeProtocolHandler::AllowPort(int32_t port, const char *scheme, bool *_retval)
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{
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// don't override anything.
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*_retval = false;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsChromeProtocolHandler::GetProtocolFlags(uint32_t *result)
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{
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*result = URI_STD | URI_IS_UI_RESOURCE | URI_IS_LOCAL_RESOURCE;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsChromeProtocolHandler::NewURI(const nsACString &aSpec,
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const char *aCharset,
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nsIURI *aBaseURI,
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nsIURI **result)
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{
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// Chrome: URLs (currently) have no additional structure beyond that provided
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// by standard URLs, so there is no "outer" given to CreateInstance
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RefPtr<nsStandardURL> surl = new nsStandardURL();
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nsresult rv = surl->Init(nsIStandardURL::URLTYPE_STANDARD, -1, aSpec,
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aCharset, aBaseURI);
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if (NS_FAILED(rv))
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return rv;
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// Canonify the "chrome:" URL; e.g., so that we collapse
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// "chrome://navigator/content/" and "chrome://navigator/content"
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// and "chrome://navigator/content/navigator.xul".
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rv = nsChromeRegistry::Canonify(surl);
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if (NS_FAILED(rv))
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return rv;
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surl->SetMutable(false);
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surl.forget(result);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsChromeProtocolHandler::NewChannel2(nsIURI* aURI,
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nsILoadInfo* aLoadInfo,
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nsIChannel** aResult)
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{
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nsresult rv;
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NS_ENSURE_ARG_POINTER(aURI);
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NS_PRECONDITION(aResult, "Null out param");
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#ifdef DEBUG
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// Check that the uri we got is already canonified
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nsresult debug_rv;
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nsCOMPtr<nsIURI> debugClone;
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debug_rv = aURI->Clone(getter_AddRefs(debugClone));
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if (NS_SUCCEEDED(debug_rv)) {
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nsCOMPtr<nsIURL> debugURL (do_QueryInterface(debugClone));
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debug_rv = nsChromeRegistry::Canonify(debugURL);
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if (NS_SUCCEEDED(debug_rv)) {
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bool same;
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debug_rv = aURI->Equals(debugURL, &same);
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if (NS_SUCCEEDED(debug_rv)) {
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NS_ASSERTION(same, "Non-canonified chrome uri passed to nsChromeProtocolHandler::NewChannel!");
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}
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}
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}
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#endif
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nsCOMPtr<nsIChannel> result;
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if (!nsChromeRegistry::gChromeRegistry) {
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// We don't actually want this ref, we just want the service to
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// initialize if it hasn't already.
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nsCOMPtr<nsIChromeRegistry> reg =
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mozilla::services::GetChromeRegistryService();
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NS_ENSURE_TRUE(nsChromeRegistry::gChromeRegistry, NS_ERROR_FAILURE);
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}
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nsCOMPtr<nsIURI> resolvedURI;
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rv = nsChromeRegistry::gChromeRegistry->ConvertChromeURL(aURI, getter_AddRefs(resolvedURI));
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if (NS_FAILED(rv)) {
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#ifdef DEBUG
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nsAutoCString spec;
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aURI->GetSpec(spec);
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printf("Couldn't convert chrome URL: %s\n", spec.get());
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#endif
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return rv;
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}
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rv = NS_NewChannelInternal(getter_AddRefs(result),
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resolvedURI,
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aLoadInfo);
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NS_ENSURE_SUCCESS(rv, rv);
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#ifdef DEBUG
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nsCOMPtr<nsIFileChannel> fileChan(do_QueryInterface(result));
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if (fileChan) {
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nsCOMPtr<nsIFile> file;
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fileChan->GetFile(getter_AddRefs(file));
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bool exists = false;
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file->Exists(&exists);
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if (!exists) {
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nsAutoCString path;
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file->GetNativePath(path);
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printf("Chrome file doesn't exist: %s\n", path.get());
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}
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}
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#endif
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// Make sure that the channel remembers where it was
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// originally loaded from.
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nsLoadFlags loadFlags = 0;
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result->GetLoadFlags(&loadFlags);
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result->SetLoadFlags(loadFlags & ~nsIChannel::LOAD_REPLACE);
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rv = result->SetOriginalURI(aURI);
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if (NS_FAILED(rv)) return rv;
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// Get a system principal for content files and set the owner
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// property of the result
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nsCOMPtr<nsIURL> url = do_QueryInterface(aURI);
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nsAutoCString path;
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rv = url->GetPath(path);
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if (StringBeginsWith(path, NS_LITERAL_CSTRING("/content/")))
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{
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nsCOMPtr<nsIScriptSecurityManager> securityManager =
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do_GetService(NS_SCRIPTSECURITYMANAGER_CONTRACTID, &rv);
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if (NS_FAILED(rv)) return rv;
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nsCOMPtr<nsIPrincipal> principal;
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rv = securityManager->GetSystemPrincipal(getter_AddRefs(principal));
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if (NS_FAILED(rv)) return rv;
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nsCOMPtr<nsISupports> owner = do_QueryInterface(principal);
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result->SetOwner(owner);
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}
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// XXX Removed dependency-tracking code from here, because we're not
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// tracking them anyways (with fastload we checked only in DEBUG
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// and with startupcache not at all), but this is where we would start
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// if we need to re-add.
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// See bug 531886, bug 533038.
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result->SetContentCharset(NS_LITERAL_CSTRING("UTF-8"));
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*aResult = result;
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NS_ADDREF(*aResult);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsChromeProtocolHandler::NewChannel(nsIURI* aURI,
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nsIChannel* *aResult)
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{
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return NewChannel2(aURI, nullptr, aResult);
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}
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////////////////////////////////////////////////////////////////////////////////
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