mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
427 lines
12 KiB
C++
427 lines
12 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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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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#include "mozilla/chrome/RegistryMessageUtils.h"
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#include "nsResProtocolHandler.h"
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#include "nsIURL.h"
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#include "nsIIOService.h"
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#include "nsIServiceManager.h"
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#include "prenv.h"
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#include "prprf.h"
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#include "nsXPIDLString.h"
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#include "nsIFile.h"
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#include "nsDirectoryServiceDefs.h"
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#include "nsNetUtil.h"
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#include "nsURLHelper.h"
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#include "nsEscape.h"
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#include "mozilla/Omnijar.h"
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static NS_DEFINE_CID(kResURLCID, NS_RESURL_CID);
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static nsResProtocolHandler *gResHandler = nullptr;
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#if defined(PR_LOGGING)
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//
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// Log module for Resource Protocol logging...
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//
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// To enable logging (see prlog.h for full details):
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//
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// set NSPR_LOG_MODULES=nsResProtocol:5
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// set NSPR_LOG_FILE=log.txt
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//
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// this enables PR_LOG_ALWAYS level information and places all output in
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// the file log.txt
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//
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static PRLogModuleInfo *gResLog;
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#endif
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#define kAPP NS_LITERAL_CSTRING("app")
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#define kGRE NS_LITERAL_CSTRING("gre")
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//----------------------------------------------------------------------------
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// nsResURL : overrides nsStandardURL::GetFile to provide nsIFile resolution
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//----------------------------------------------------------------------------
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nsresult
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nsResURL::EnsureFile()
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{
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nsresult rv;
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NS_ENSURE_TRUE(gResHandler, NS_ERROR_NOT_AVAILABLE);
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nsAutoCString spec;
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rv = gResHandler->ResolveURI(this, spec);
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if (NS_FAILED(rv))
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return rv;
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nsAutoCString scheme;
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rv = net_ExtractURLScheme(spec, nullptr, nullptr, &scheme);
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if (NS_FAILED(rv))
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return rv;
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// Bug 585869:
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// In most cases, the scheme is jar if it's not file.
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// Regardless, net_GetFileFromURLSpec should be avoided
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// when the scheme isn't file.
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if (!scheme.Equals(NS_LITERAL_CSTRING("file")))
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return NS_ERROR_NO_INTERFACE;
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rv = net_GetFileFromURLSpec(spec, getter_AddRefs(mFile));
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#ifdef DEBUG_bsmedberg
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if (NS_SUCCEEDED(rv)) {
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bool exists = true;
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mFile->Exists(&exists);
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if (!exists) {
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printf("resource %s doesn't exist!\n", spec.get());
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}
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}
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#endif
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return rv;
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}
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/* virtual */ nsStandardURL*
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nsResURL::StartClone()
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{
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nsResURL *clone = new nsResURL();
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return clone;
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}
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NS_IMETHODIMP
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nsResURL::GetClassIDNoAlloc(nsCID *aClassIDNoAlloc)
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{
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*aClassIDNoAlloc = kResURLCID;
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return NS_OK;
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}
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//----------------------------------------------------------------------------
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// nsResProtocolHandler <public>
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//----------------------------------------------------------------------------
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nsResProtocolHandler::nsResProtocolHandler()
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{
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#if defined(PR_LOGGING)
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gResLog = PR_NewLogModule("nsResProtocol");
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#endif
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NS_ASSERTION(!gResHandler, "res handler already created!");
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gResHandler = this;
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}
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nsResProtocolHandler::~nsResProtocolHandler()
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{
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gResHandler = nullptr;
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}
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nsresult
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nsResProtocolHandler::Init()
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{
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mSubstitutions.Init(32);
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nsresult rv;
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mIOService = do_GetIOService(&rv);
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NS_ENSURE_SUCCESS(rv, rv);
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nsAutoCString appURI, greURI;
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rv = mozilla::Omnijar::GetURIString(mozilla::Omnijar::APP, appURI);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mozilla::Omnijar::GetURIString(mozilla::Omnijar::GRE, greURI);
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NS_ENSURE_SUCCESS(rv, rv);
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//
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// make resource:/// point to the application directory or omnijar
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//
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nsCOMPtr<nsIURI> uri;
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rv = NS_NewURI(getter_AddRefs(uri), appURI.Length() ? appURI : greURI);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = SetSubstitution(EmptyCString(), uri);
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NS_ENSURE_SUCCESS(rv, rv);
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//
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// make resource://app/ point to the application directory or omnijar
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//
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rv = SetSubstitution(kAPP, uri);
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NS_ENSURE_SUCCESS(rv, rv);
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//
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// make resource://gre/ point to the GRE directory
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//
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if (appURI.Length()) { // We already have greURI in uri if appURI.Length() is 0.
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rv = NS_NewURI(getter_AddRefs(uri), greURI);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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rv = SetSubstitution(kGRE, uri);
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NS_ENSURE_SUCCESS(rv, rv);
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//XXXbsmedberg Neil wants a resource://pchrome/ for the profile chrome dir...
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// but once I finish multiple chrome registration I'm not sure that it is needed
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// XXX dveditz: resource://pchrome/ defeats profile directory salting
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// if web content can load it. Tread carefully.
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return rv;
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}
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static PLDHashOperator
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EnumerateSubstitution(const nsACString& aKey,
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nsIURI* aURI,
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void* aArg)
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{
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nsTArray<ResourceMapping>* resources =
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static_cast<nsTArray<ResourceMapping>*>(aArg);
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SerializedURI uri;
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if (aURI) {
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aURI->GetSpec(uri.spec);
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aURI->GetOriginCharset(uri.charset);
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}
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ResourceMapping resource = {
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nsCString(aKey), uri
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};
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resources->AppendElement(resource);
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return (PLDHashOperator)PL_DHASH_NEXT;
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}
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void
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nsResProtocolHandler::CollectSubstitutions(InfallibleTArray<ResourceMapping>& aResources)
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{
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mSubstitutions.EnumerateRead(&EnumerateSubstitution, &aResources);
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}
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//----------------------------------------------------------------------------
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// nsResProtocolHandler::nsISupports
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//----------------------------------------------------------------------------
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NS_IMPL_ISUPPORTS3(nsResProtocolHandler,
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nsIResProtocolHandler,
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nsIProtocolHandler,
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nsISupportsWeakReference)
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//----------------------------------------------------------------------------
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// nsResProtocolHandler::nsIProtocolHandler
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//----------------------------------------------------------------------------
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NS_IMETHODIMP
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nsResProtocolHandler::GetScheme(nsACString &result)
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{
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result.AssignLiteral("resource");
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return NS_OK;
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}
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NS_IMETHODIMP
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nsResProtocolHandler::GetDefaultPort(int32_t *result)
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{
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*result = -1; // no port for res: URLs
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return NS_OK;
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}
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NS_IMETHODIMP
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nsResProtocolHandler::GetProtocolFlags(uint32_t *result)
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{
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// XXXbz Is this really true for all resource: URIs? Could we
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// somehow give different flags to some of them?
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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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nsResProtocolHandler::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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nsresult rv;
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nsResURL *resURL = new nsResURL();
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if (!resURL)
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return NS_ERROR_OUT_OF_MEMORY;
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NS_ADDREF(resURL);
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// unescape any %2f and %2e to make sure nsStandardURL coalesces them.
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// Later net_GetFileFromURLSpec() will do a full unescape and we want to
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// treat them the same way the file system will. (bugs 380994, 394075)
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nsAutoCString spec;
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const char *src = aSpec.BeginReading();
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const char *end = aSpec.EndReading();
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const char *last = src;
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spec.SetCapacity(aSpec.Length()+1);
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for ( ; src < end; ++src) {
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if (*src == '%' && (src < end-2) && *(src+1) == '2') {
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char ch = '\0';
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if (*(src+2) == 'f' || *(src+2) == 'F')
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ch = '/';
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else if (*(src+2) == 'e' || *(src+2) == 'E')
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ch = '.';
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if (ch) {
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if (last < src)
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spec.Append(last, src-last);
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spec.Append(ch);
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src += 2;
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last = src+1; // src will be incremented by the loop
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}
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}
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}
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if (last < src)
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spec.Append(last, src-last);
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rv = resURL->Init(nsIStandardURL::URLTYPE_STANDARD, -1, spec, aCharset, aBaseURI);
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if (NS_SUCCEEDED(rv))
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rv = CallQueryInterface(resURL, result);
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NS_RELEASE(resURL);
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return rv;
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}
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NS_IMETHODIMP
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nsResProtocolHandler::NewChannel(nsIURI* uri, nsIChannel* *result)
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{
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NS_ENSURE_ARG_POINTER(uri);
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nsresult rv;
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nsAutoCString spec;
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rv = ResolveURI(uri, spec);
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if (NS_FAILED(rv)) return rv;
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rv = mIOService->NewChannel(spec, nullptr, nullptr, result);
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if (NS_FAILED(rv)) return rv;
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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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return (*result)->SetOriginalURI(uri);
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}
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NS_IMETHODIMP
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nsResProtocolHandler::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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//----------------------------------------------------------------------------
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// nsResProtocolHandler::nsIResProtocolHandler
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//----------------------------------------------------------------------------
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NS_IMETHODIMP
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nsResProtocolHandler::SetSubstitution(const nsACString& root, nsIURI *baseURI)
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{
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if (!baseURI) {
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mSubstitutions.Remove(root);
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return NS_OK;
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}
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// If baseURI isn't a resource URI, we can set the substitution immediately.
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nsAutoCString scheme;
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nsresult rv = baseURI->GetScheme(scheme);
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NS_ENSURE_SUCCESS(rv, rv);
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if (!scheme.Equals(NS_LITERAL_CSTRING("resource"))) {
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mSubstitutions.Put(root, baseURI);
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return NS_OK;
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}
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// baseURI is a resource URI, let's resolve it first.
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nsAutoCString newBase;
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rv = ResolveURI(baseURI, newBase);
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIURI> newBaseURI;
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rv = mIOService->NewURI(newBase, nullptr, nullptr,
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getter_AddRefs(newBaseURI));
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NS_ENSURE_SUCCESS(rv, rv);
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mSubstitutions.Put(root, newBaseURI);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsResProtocolHandler::GetSubstitution(const nsACString& root, nsIURI **result)
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{
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NS_ENSURE_ARG_POINTER(result);
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if (mSubstitutions.Get(root, result))
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return NS_OK;
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// try invoking the directory service for "resource:root"
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nsAutoCString key;
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key.AssignLiteral("resource:");
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key.Append(root);
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nsCOMPtr<nsIFile> file;
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nsresult rv = NS_GetSpecialDirectory(key.get(), getter_AddRefs(file));
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if (NS_FAILED(rv))
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return NS_ERROR_NOT_AVAILABLE;
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rv = mIOService->NewFileURI(file, result);
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if (NS_FAILED(rv))
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return NS_ERROR_NOT_AVAILABLE;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsResProtocolHandler::HasSubstitution(const nsACString& root, bool *result)
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{
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NS_ENSURE_ARG_POINTER(result);
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*result = mSubstitutions.Get(root, nullptr);
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return NS_OK;
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}
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NS_IMETHODIMP
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nsResProtocolHandler::ResolveURI(nsIURI *uri, nsACString &result)
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{
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nsresult rv;
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nsAutoCString host;
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nsAutoCString path;
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rv = uri->GetAsciiHost(host);
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if (NS_FAILED(rv)) return rv;
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rv = uri->GetPath(path);
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if (NS_FAILED(rv)) return rv;
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// Unescape the path so we can perform some checks on it.
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nsAutoCString unescapedPath(path);
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NS_UnescapeURL(unescapedPath);
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// Don't misinterpret the filepath as an absolute URI.
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if (unescapedPath.FindChar(':') != -1)
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return NS_ERROR_MALFORMED_URI;
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if (unescapedPath.FindChar('\\') != -1)
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return NS_ERROR_MALFORMED_URI;
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const char *p = path.get() + 1; // path always starts with a slash
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NS_ASSERTION(*(p-1) == '/', "Path did not begin with a slash!");
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if (*p == '/')
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return NS_ERROR_MALFORMED_URI;
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nsCOMPtr<nsIURI> baseURI;
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rv = GetSubstitution(host, getter_AddRefs(baseURI));
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if (NS_FAILED(rv)) return rv;
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rv = baseURI->Resolve(nsDependentCString(p, path.Length()-1), result);
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#if defined(PR_LOGGING)
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if (PR_LOG_TEST(gResLog, PR_LOG_DEBUG)) {
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nsAutoCString spec;
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uri->GetAsciiSpec(spec);
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PR_LOG(gResLog, PR_LOG_DEBUG,
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("%s\n -> %s\n", spec.get(), PromiseFlatCString(result).get()));
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}
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#endif
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return rv;
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}
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