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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/chrome/RegistryMessageUtils.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/Unused.h"
#include "nsResProtocolHandler.h"
#include "nsNetCID.h"
#include "nsNetUtil.h"
#include "nsURLHelper.h"
#include "nsEscape.h"
#include "mozilla/Omnijar.h"
using mozilla::LogLevel;
using mozilla::Unused;
using mozilla::dom::ContentParent;
#define kAPP "app"
#define kGRE "gre"
#define kAndroid "android"
mozilla::StaticRefPtr<nsResProtocolHandler> nsResProtocolHandler::sSingleton;
already_AddRefed<nsResProtocolHandler> nsResProtocolHandler::GetSingleton() {
if (!sSingleton) {
RefPtr<nsResProtocolHandler> handler = new nsResProtocolHandler();
if (NS_WARN_IF(NS_FAILED(handler->Init()))) {
return nullptr;
}
sSingleton = handler;
ClearOnShutdown(&sSingleton);
}
return do_AddRef(sSingleton);
}
nsresult nsResProtocolHandler::Init() {
nsresult rv;
rv = mozilla::Omnijar::GetURIString(mozilla::Omnijar::APP, mAppURI);
NS_ENSURE_SUCCESS(rv, rv);
rv = mozilla::Omnijar::GetURIString(mozilla::Omnijar::GRE, mGREURI);
NS_ENSURE_SUCCESS(rv, rv);
// mozilla::Omnijar::GetURIString always returns a string ending with /,
// and we want to remove it.
mGREURI.Truncate(mGREURI.Length() - 1);
if (mAppURI.Length()) {
mAppURI.Truncate(mAppURI.Length() - 1);
} else {
mAppURI = mGREURI;
}
#ifdef ANDROID
rv = GetApkURI(mApkURI);
#endif
// XXXbsmedberg Neil wants a resource://pchrome/ for the profile chrome dir...
// but once I finish multiple chrome registration I'm not sure that it is
// needed
// XXX dveditz: resource://pchrome/ defeats profile directory salting
// if web content can load it. Tread carefully.
return rv;
}
#ifdef ANDROID
nsresult nsResProtocolHandler::GetApkURI(nsACString& aResult) {
nsCString::const_iterator start, iter;
mGREURI.BeginReading(start);
mGREURI.EndReading(iter);
nsCString::const_iterator start_iter = start;
// This is like jar:jar:file://path/to/apk/base.apk!/path/to/omni.ja!/
bool found = FindInReadable("!/"_ns, start_iter, iter);
NS_ENSURE_TRUE(found, NS_ERROR_UNEXPECTED);
// like jar:jar:file://path/to/apk/base.apk!/
const nsDependentCSubstring& withoutPath = Substring(start, iter);
NS_ENSURE_TRUE(withoutPath.Length() >= 4, NS_ERROR_UNEXPECTED);
// Let's make sure we're removing what we expect to remove
NS_ENSURE_TRUE(Substring(withoutPath, 0, 4).EqualsLiteral("jar:"),
NS_ERROR_UNEXPECTED);
// like jar:file://path/to/apk/base.apk!/
aResult = ToNewCString(Substring(withoutPath, 4));
// Remove the trailing /
NS_ENSURE_TRUE(aResult.Length() >= 1, NS_ERROR_UNEXPECTED);
aResult.Truncate(aResult.Length() - 1);
return NS_OK;
}
#endif
//----------------------------------------------------------------------------
// nsResProtocolHandler::nsISupports
//----------------------------------------------------------------------------
NS_IMPL_QUERY_INTERFACE(nsResProtocolHandler, nsIResProtocolHandler,
nsISubstitutingProtocolHandler, nsIProtocolHandler,
nsISupportsWeakReference)
NS_IMPL_ADDREF_INHERITED(nsResProtocolHandler, SubstitutingProtocolHandler)
NS_IMPL_RELEASE_INHERITED(nsResProtocolHandler, SubstitutingProtocolHandler)
NS_IMETHODIMP
nsResProtocolHandler::AllowContentToAccess(nsIURI* aURI, bool* aResult) {
*aResult = false;
nsAutoCString host;
nsresult rv = aURI->GetAsciiHost(host);
NS_ENSURE_SUCCESS(rv, rv);
uint32_t flags;
rv = GetSubstitutionFlags(host, &flags);
NS_ENSURE_SUCCESS(rv, rv);
*aResult = flags & nsISubstitutingProtocolHandler::ALLOW_CONTENT_ACCESS;
return NS_OK;
}
nsresult nsResProtocolHandler::GetSubstitutionInternal(const nsACString& aRoot,
nsIURI** aResult,
uint32_t* aFlags) {
nsAutoCString uri;
if (!ResolveSpecialCases(aRoot, "/"_ns, "/"_ns, uri)) {
return NS_ERROR_NOT_AVAILABLE;
}
if (aRoot.Equals(kAndroid)) {
*aFlags = nsISubstitutingProtocolHandler::RESOLVE_JAR_URI;
} else {
*aFlags = 0; // No content access.
}
return NS_NewURI(aResult, uri);
}
bool nsResProtocolHandler::ResolveSpecialCases(const nsACString& aHost,
const nsACString& aPath,
const nsACString& aPathname,
nsACString& aResult) {
if (aHost.EqualsLiteral("") || aHost.EqualsLiteral(kAPP)) {
aResult.Assign(mAppURI);
} else if (aHost.Equals(kGRE)) {
aResult.Assign(mGREURI);
#ifdef ANDROID
} else if (aHost.Equals(kAndroid)) {
aResult.Assign(mApkURI);
#endif
} else {
return false;
}
aResult.Append(aPath);
return true;
}
nsresult nsResProtocolHandler::SetSubstitution(const nsACString& aRoot,
nsIURI* aBaseURI) {
MOZ_ASSERT(!aRoot.EqualsLiteral(""));
MOZ_ASSERT(!aRoot.EqualsLiteral(kAPP));
MOZ_ASSERT(!aRoot.EqualsLiteral(kGRE));
MOZ_ASSERT(!aRoot.EqualsLiteral(kAndroid));
return SubstitutingProtocolHandler::SetSubstitution(aRoot, aBaseURI);
}
nsresult nsResProtocolHandler::SetSubstitutionWithFlags(const nsACString& aRoot,
nsIURI* aBaseURI,
uint32_t aFlags) {
MOZ_ASSERT(!aRoot.EqualsLiteral(""));
MOZ_ASSERT(!aRoot.EqualsLiteral(kAPP));
MOZ_ASSERT(!aRoot.EqualsLiteral(kGRE));
MOZ_ASSERT(!aRoot.EqualsLiteral(kAndroid));
return SubstitutingProtocolHandler::SetSubstitutionWithFlags(aRoot, aBaseURI,
aFlags);
}
nsresult nsResProtocolHandler::HasSubstitution(const nsACString& aRoot,
bool* aResult) {
if (aRoot.EqualsLiteral(kAPP) || aRoot.EqualsLiteral(kGRE)
#ifdef ANDROID
|| aRoot.EqualsLiteral(kAndroid)
#endif
) {
*aResult = true;
return NS_OK;
}
return mozilla::net::SubstitutingProtocolHandler::HasSubstitution(aRoot,
aResult);
}
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