зеркало из https://github.com/mozilla/gecko-dev.git
447 строки
12 KiB
C++
447 строки
12 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
|
/* 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 "SubstitutingProtocolHandler.h"
|
|
#include "nsIChannel.h"
|
|
#include "nsIIOService.h"
|
|
#include "nsIFile.h"
|
|
#include "nsNetCID.h"
|
|
#include "nsNetUtil.h"
|
|
#include "nsURLHelper.h"
|
|
#include "nsEscape.h"
|
|
|
|
using mozilla::dom::ContentParent;
|
|
|
|
namespace mozilla {
|
|
namespace net {
|
|
|
|
// Log module for Substituting Protocol logging. We keep the pre-existing module
|
|
// name of "nsResProtocol" to avoid disruption.
|
|
static LazyLogModule gResLog("nsResProtocol");
|
|
|
|
static NS_DEFINE_CID(kSubstitutingURLCID, NS_SUBSTITUTINGURL_CID);
|
|
|
|
//---------------------------------------------------------------------------------
|
|
// SubstitutingURL : overrides nsStandardURL::GetFile to provide nsIFile resolution
|
|
//---------------------------------------------------------------------------------
|
|
|
|
nsresult
|
|
SubstitutingURL::EnsureFile()
|
|
{
|
|
nsAutoCString ourScheme;
|
|
nsresult rv = GetScheme(ourScheme);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// Get the handler associated with this scheme. It would be nice to just
|
|
// pass this in when constructing SubstitutingURLs, but we need a generic
|
|
// factory constructor.
|
|
nsCOMPtr<nsIIOService> io = do_GetIOService(&rv);
|
|
nsCOMPtr<nsIProtocolHandler> handler;
|
|
rv = io->GetProtocolHandler(ourScheme.get(), getter_AddRefs(handler));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
nsCOMPtr<nsISubstitutingProtocolHandler> substHandler = do_QueryInterface(handler);
|
|
MOZ_ASSERT(substHandler);
|
|
|
|
nsAutoCString spec;
|
|
rv = substHandler->ResolveURI(this, spec);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
nsAutoCString scheme;
|
|
rv = net_ExtractURLScheme(spec, scheme);
|
|
if (NS_FAILED(rv))
|
|
return rv;
|
|
|
|
// Bug 585869:
|
|
// In most cases, the scheme is jar if it's not file.
|
|
// Regardless, net_GetFileFromURLSpec should be avoided
|
|
// when the scheme isn't file.
|
|
if (!scheme.EqualsLiteral("file"))
|
|
return NS_ERROR_NO_INTERFACE;
|
|
|
|
return net_GetFileFromURLSpec(spec, getter_AddRefs(mFile));
|
|
}
|
|
|
|
/* virtual */ nsStandardURL*
|
|
SubstitutingURL::StartClone()
|
|
{
|
|
SubstitutingURL *clone = new SubstitutingURL();
|
|
return clone;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
SubstitutingURL::GetClassIDNoAlloc(nsCID *aClassIDNoAlloc)
|
|
{
|
|
*aClassIDNoAlloc = kSubstitutingURLCID;
|
|
return NS_OK;
|
|
}
|
|
|
|
SubstitutingProtocolHandler::SubstitutingProtocolHandler(const char* aScheme, uint32_t aFlags,
|
|
bool aEnforceFileOrJar)
|
|
: mScheme(aScheme)
|
|
, mSubstitutions(16)
|
|
, mEnforceFileOrJar(aEnforceFileOrJar)
|
|
{
|
|
mFlags.emplace(aFlags);
|
|
ConstructInternal();
|
|
}
|
|
|
|
SubstitutingProtocolHandler::SubstitutingProtocolHandler(const char* aScheme)
|
|
: mScheme(aScheme)
|
|
, mSubstitutions(16)
|
|
, mEnforceFileOrJar(true)
|
|
{
|
|
ConstructInternal();
|
|
}
|
|
|
|
void
|
|
SubstitutingProtocolHandler::ConstructInternal()
|
|
{
|
|
nsresult rv;
|
|
mIOService = do_GetIOService(&rv);
|
|
MOZ_RELEASE_ASSERT(NS_SUCCEEDED(rv) && mIOService);
|
|
}
|
|
|
|
//
|
|
// IPC marshalling.
|
|
//
|
|
|
|
nsresult
|
|
SubstitutingProtocolHandler::CollectSubstitutions(InfallibleTArray<SubstitutionMapping>& aMappings)
|
|
{
|
|
for (auto iter = mSubstitutions.ConstIter(); !iter.Done(); iter.Next()) {
|
|
nsCOMPtr<nsIURI> uri = iter.Data();
|
|
SerializedURI serialized;
|
|
if (uri) {
|
|
nsresult rv = uri->GetSpec(serialized.spec);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
SubstitutionMapping substitution = { mScheme, nsCString(iter.Key()), serialized };
|
|
aMappings.AppendElement(substitution);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
SubstitutingProtocolHandler::SendSubstitution(const nsACString& aRoot, nsIURI* aBaseURI)
|
|
{
|
|
if (GeckoProcessType_Content == XRE_GetProcessType()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsTArray<ContentParent*> parents;
|
|
ContentParent::GetAll(parents);
|
|
if (!parents.Length()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
SubstitutionMapping mapping;
|
|
mapping.scheme = mScheme;
|
|
mapping.path = aRoot;
|
|
if (aBaseURI) {
|
|
nsresult rv = aBaseURI->GetSpec(mapping.resolvedURI.spec);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
}
|
|
|
|
for (uint32_t i = 0; i < parents.Length(); i++) {
|
|
Unused << parents[i]->SendRegisterChromeItem(mapping);
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
//----------------------------------------------------------------------------
|
|
// nsIProtocolHandler
|
|
//----------------------------------------------------------------------------
|
|
|
|
nsresult
|
|
SubstitutingProtocolHandler::GetScheme(nsACString &result)
|
|
{
|
|
result = mScheme;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
SubstitutingProtocolHandler::GetDefaultPort(int32_t *result)
|
|
{
|
|
*result = -1;
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
SubstitutingProtocolHandler::GetProtocolFlags(uint32_t *result)
|
|
{
|
|
if (mFlags.isNothing()) {
|
|
NS_WARNING("Trying to get protocol flags the wrong way - use nsIProtocolHandlerWithDynamicFlags instead");
|
|
return NS_ERROR_NOT_AVAILABLE;
|
|
}
|
|
|
|
*result = mFlags.ref();
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
SubstitutingProtocolHandler::NewURI(const nsACString &aSpec,
|
|
const char *aCharset,
|
|
nsIURI *aBaseURI,
|
|
nsIURI **result)
|
|
{
|
|
nsresult rv;
|
|
|
|
RefPtr<SubstitutingURL> url = new SubstitutingURL();
|
|
if (!url)
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
|
|
// unescape any %2f and %2e to make sure nsStandardURL coalesces them.
|
|
// Later net_GetFileFromURLSpec() will do a full unescape and we want to
|
|
// treat them the same way the file system will. (bugs 380994, 394075)
|
|
nsAutoCString spec;
|
|
const char *src = aSpec.BeginReading();
|
|
const char *end = aSpec.EndReading();
|
|
const char *last = src;
|
|
|
|
spec.SetCapacity(aSpec.Length()+1);
|
|
for ( ; src < end; ++src) {
|
|
if (*src == '%' && (src < end-2) && *(src+1) == '2') {
|
|
char ch = '\0';
|
|
if (*(src+2) == 'f' || *(src+2) == 'F') {
|
|
ch = '/';
|
|
} else if (*(src+2) == 'e' || *(src+2) == 'E') {
|
|
ch = '.';
|
|
}
|
|
|
|
if (ch) {
|
|
if (last < src) {
|
|
spec.Append(last, src-last);
|
|
}
|
|
spec.Append(ch);
|
|
src += 2;
|
|
last = src+1; // src will be incremented by the loop
|
|
}
|
|
}
|
|
}
|
|
if (last < src)
|
|
spec.Append(last, src-last);
|
|
|
|
rv = url->Init(nsIStandardURL::URLTYPE_STANDARD, -1, spec, aCharset, aBaseURI);
|
|
if (NS_SUCCEEDED(rv)) {
|
|
url.forget(result);
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
SubstitutingProtocolHandler::NewChannel2(nsIURI* uri,
|
|
nsILoadInfo* aLoadInfo,
|
|
nsIChannel** result)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(uri);
|
|
NS_ENSURE_ARG_POINTER(aLoadInfo);
|
|
|
|
nsAutoCString spec;
|
|
nsresult rv = ResolveURI(uri, spec);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<nsIURI> newURI;
|
|
rv = NS_NewURI(getter_AddRefs(newURI), spec);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
// We don't want to allow the inner protocol handler to modify the result
|
|
// principal URI since we want either |uri| or anything pre-set by upper
|
|
// layers to prevail.
|
|
nsCOMPtr<nsIURI> savedResultPrincipalURI;
|
|
rv = aLoadInfo->GetResultPrincipalURI(getter_AddRefs(savedResultPrincipalURI));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = NS_NewChannelInternal(result, newURI, aLoadInfo);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
rv = aLoadInfo->SetResultPrincipalURI(savedResultPrincipalURI);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
rv = (*result)->SetOriginalURI(uri);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return SubstituteChannel(uri, aLoadInfo, result);
|
|
}
|
|
|
|
nsresult
|
|
SubstitutingProtocolHandler::NewChannel(nsIURI* uri, nsIChannel* *result)
|
|
{
|
|
return NewChannel2(uri, nullptr, result);
|
|
}
|
|
|
|
nsresult
|
|
SubstitutingProtocolHandler::AllowPort(int32_t port, const char *scheme, bool *_retval)
|
|
{
|
|
// don't override anything.
|
|
*_retval = false;
|
|
return NS_OK;
|
|
}
|
|
|
|
//----------------------------------------------------------------------------
|
|
// nsISubstitutingProtocolHandler
|
|
//----------------------------------------------------------------------------
|
|
|
|
nsresult
|
|
SubstitutingProtocolHandler::SetSubstitution(const nsACString& root, nsIURI *baseURI)
|
|
{
|
|
if (!baseURI) {
|
|
mSubstitutions.Remove(root);
|
|
NotifyObservers(root, baseURI);
|
|
return SendSubstitution(root, baseURI);
|
|
}
|
|
|
|
// If baseURI isn't a same-scheme URI, we can set the substitution immediately.
|
|
nsAutoCString scheme;
|
|
nsresult rv = baseURI->GetScheme(scheme);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
if (!scheme.Equals(mScheme)) {
|
|
if (mEnforceFileOrJar && !scheme.EqualsLiteral("file") && !scheme.EqualsLiteral("jar")
|
|
&& !scheme.EqualsLiteral("app")) {
|
|
NS_WARNING("Refusing to create substituting URI to non-file:// target");
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
mSubstitutions.Put(root, baseURI);
|
|
NotifyObservers(root, baseURI);
|
|
return SendSubstitution(root, baseURI);
|
|
}
|
|
|
|
// baseURI is a same-type substituting URI, let's resolve it first.
|
|
nsAutoCString newBase;
|
|
rv = ResolveURI(baseURI, newBase);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
nsCOMPtr<nsIURI> newBaseURI;
|
|
rv = mIOService->NewURI(newBase, nullptr, nullptr, getter_AddRefs(newBaseURI));
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
mSubstitutions.Put(root, newBaseURI);
|
|
NotifyObservers(root, baseURI);
|
|
return SendSubstitution(root, newBaseURI);
|
|
}
|
|
|
|
nsresult
|
|
SubstitutingProtocolHandler::GetSubstitution(const nsACString& root, nsIURI **result)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(result);
|
|
|
|
if (mSubstitutions.Get(root, result))
|
|
return NS_OK;
|
|
|
|
return GetSubstitutionInternal(root, result);
|
|
}
|
|
|
|
nsresult
|
|
SubstitutingProtocolHandler::HasSubstitution(const nsACString& root, bool *result)
|
|
{
|
|
NS_ENSURE_ARG_POINTER(result);
|
|
*result = HasSubstitution(root);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
SubstitutingProtocolHandler::ResolveURI(nsIURI *uri, nsACString &result)
|
|
{
|
|
nsresult rv;
|
|
|
|
nsAutoCString host;
|
|
nsAutoCString path;
|
|
nsAutoCString pathname;
|
|
|
|
nsCOMPtr<nsIURL> url = do_QueryInterface(uri);
|
|
if (!url) {
|
|
return NS_ERROR_MALFORMED_URI;
|
|
}
|
|
|
|
rv = uri->GetAsciiHost(host);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
rv = uri->GetPathQueryRef(path);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
rv = url->GetFilePath(pathname);
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
if (ResolveSpecialCases(host, path, pathname, result)) {
|
|
return NS_OK;
|
|
}
|
|
|
|
nsCOMPtr<nsIURI> baseURI;
|
|
rv = GetSubstitution(host, getter_AddRefs(baseURI));
|
|
if (NS_FAILED(rv)) return rv;
|
|
|
|
// Unescape the path so we can perform some checks on it.
|
|
NS_UnescapeURL(pathname);
|
|
if (pathname.FindChar('\\') != -1) {
|
|
return NS_ERROR_MALFORMED_URI;
|
|
}
|
|
|
|
// Some code relies on an empty path resolving to a file rather than a
|
|
// directory.
|
|
NS_ASSERTION(path.CharAt(0) == '/', "Path must begin with '/'");
|
|
if (path.Length() == 1) {
|
|
rv = baseURI->GetSpec(result);
|
|
} else {
|
|
// Make sure we always resolve the path as file-relative to our target URI.
|
|
path.InsertLiteral(".", 0);
|
|
|
|
rv = baseURI->Resolve(path, result);
|
|
}
|
|
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
if (MOZ_LOG_TEST(gResLog, LogLevel::Debug)) {
|
|
nsAutoCString spec;
|
|
uri->GetAsciiSpec(spec);
|
|
MOZ_LOG(gResLog, LogLevel::Debug, ("%s\n -> %s\n", spec.get(), PromiseFlatCString(result).get()));
|
|
}
|
|
return rv;
|
|
}
|
|
|
|
nsresult
|
|
SubstitutingProtocolHandler::AddObserver(nsISubstitutionObserver* aObserver)
|
|
{
|
|
NS_ENSURE_ARG(aObserver);
|
|
if (mObservers.Contains(aObserver)) {
|
|
return NS_ERROR_DUPLICATE_HANDLE;
|
|
}
|
|
|
|
mObservers.AppendElement(aObserver);
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
SubstitutingProtocolHandler::RemoveObserver(nsISubstitutionObserver* aObserver)
|
|
{
|
|
NS_ENSURE_ARG(aObserver);
|
|
if (!mObservers.Contains(aObserver)) {
|
|
return NS_ERROR_INVALID_ARG;
|
|
}
|
|
|
|
mObservers.RemoveElement(aObserver);
|
|
return NS_OK;
|
|
}
|
|
|
|
void
|
|
SubstitutingProtocolHandler::NotifyObservers(const nsACString& aRoot,
|
|
nsIURI* aBaseURI)
|
|
{
|
|
for (size_t i = 0; i < mObservers.Length(); ++i) {
|
|
mObservers[i]->OnSetSubstitution(aRoot, aBaseURI);
|
|
}
|
|
}
|
|
|
|
} // namespace net
|
|
} // namespace mozilla
|