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/* -*- 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
#include "Omnijar.h"
#include "nsDirectoryService.h"
#include "nsDirectoryServiceDefs.h"
#include "mozilla/GeckoArgs.h"
#include "mozilla/ipc/ProcessChild.h"
#include "nsIFile.h"
#include "nsZipArchive.h"
#include "nsNetUtil.h"
namespace mozilla {
StaticRefPtr<nsIFile> Omnijar::sPath[2];
StaticRefPtr<nsZipArchive> Omnijar::sReader[2];
StaticRefPtr<nsZipArchive> Omnijar::sOuterReader[2];
bool Omnijar::sInitialized = false;
bool Omnijar::sIsUnified = false;
static const char* sProp[2] = {NS_GRE_DIR, NS_XPCOM_CURRENT_PROCESS_DIR};
#define SPROP(Type) ((Type == mozilla::Omnijar::GRE) ? sProp[GRE] : sProp[APP])
void Omnijar::CleanUpOne(Type aType) {
if (sReader[aType]) {
sReader[aType] = nullptr;
}
if (sOuterReader[aType]) {
sOuterReader[aType] = nullptr;
}
sPath[aType] = nullptr;
}
nsresult Omnijar::InitOne(nsIFile* aPath, Type aType) {
nsCOMPtr<nsIFile> file;
if (aPath) {
file = aPath;
} else {
nsCOMPtr<nsIFile> dir;
MOZ_TRY(nsDirectoryService::gService->Get(SPROP(aType), NS_GET_IID(nsIFile),
getter_AddRefs(dir)));
constexpr auto kOmnijarName = nsLiteralCString{MOZ_STRINGIFY(OMNIJAR_NAME)};
MOZ_TRY(dir->Clone(getter_AddRefs(file)));
MOZ_TRY(file->AppendNative(kOmnijarName));
}
bool isFile = false;
if (NS_FAILED(file->IsFile(&isFile)) || !isFile) {
// If we're not using an omni.jar for GRE, and we don't have an
// omni.jar for APP, check if both directories are the same.
if ((aType == APP) && (!sPath[GRE])) {
nsCOMPtr<nsIFile> greDir, appDir;
bool equals;
nsDirectoryService::gService->Get(sProp[GRE], NS_GET_IID(nsIFile),
getter_AddRefs(greDir));
nsDirectoryService::gService->Get(sProp[APP], NS_GET_IID(nsIFile),
getter_AddRefs(appDir));
if (NS_SUCCEEDED(greDir->Equals(appDir, &equals)) && equals) {
sIsUnified = true;
}
}
return NS_OK;
}
// If we're using omni.jar on both GRE and APP and their path
// is the same, we're also in the unified case.
bool equals;
if ((aType == APP) && (sPath[GRE]) &&
NS_SUCCEEDED(sPath[GRE]->Equals(file, &equals)) && equals) {
// If we're using omni.jar on both GRE and APP and their path
// is the same, we're in the unified case.
sIsUnified = true;
return NS_OK;
}
RefPtr<nsZipArchive> zipReader = nsZipArchive::OpenArchive(file);
if (!zipReader) {
// As file has been checked to exist as file above, any error indicates
// that it is somehow corrupted internally.
return NS_ERROR_FILE_CORRUPTED;
}
RefPtr<nsZipArchive> outerReader;
RefPtr<nsZipHandle> handle;
// If we find a wrapped OMNIJAR, unwrap it.
if (NS_SUCCEEDED(nsZipHandle::Init(zipReader, MOZ_STRINGIFY(OMNIJAR_NAME),
getter_AddRefs(handle)))) {
outerReader = zipReader;
zipReader = nsZipArchive::OpenArchive(handle);
if (!zipReader) {
return NS_ERROR_FILE_CORRUPTED;
}
}
CleanUpOne(aType);
sReader[aType] = zipReader;
sOuterReader[aType] = outerReader;
sPath[aType] = file;
return NS_OK;
}
nsresult Omnijar::FallibleInit(nsIFile* aGrePath, nsIFile* aAppPath) {
// Even on error we do not want to come here again.
sInitialized = true;
// Let's always try to init both before returning any error for the benefit
// of callers that do not handle the error at all.
nsresult rvGRE = InitOne(aGrePath, GRE);
nsresult rvAPP = InitOne(aAppPath, APP);
MOZ_TRY(rvGRE);
MOZ_TRY(rvAPP);
return NS_OK;
}
void Omnijar::Init(nsIFile* aGrePath, nsIFile* aAppPath) {
nsresult rv = FallibleInit(aGrePath, aAppPath);
if (NS_FAILED(rv)) {
MOZ_CRASH_UNSAFE_PRINTF("Omnijar::Init failed: %s",
mozilla::GetStaticErrorName(rv));
}
}
void Omnijar::CleanUp() {
CleanUpOne(GRE);
CleanUpOne(APP);
sInitialized = false;
}
already_AddRefed<nsZipArchive> Omnijar::GetReader(nsIFile* aPath) {
MOZ_ASSERT(IsInitialized(), "Omnijar not initialized");
bool equals;
nsresult rv;
if (sPath[GRE]) {
rv = sPath[GRE]->Equals(aPath, &equals);
if (NS_SUCCEEDED(rv) && equals) {
return IsNested(GRE) ? GetOuterReader(GRE) : GetReader(GRE);
}
}
if (sPath[APP]) {
rv = sPath[APP]->Equals(aPath, &equals);
if (NS_SUCCEEDED(rv) && equals) {
return IsNested(APP) ? GetOuterReader(APP) : GetReader(APP);
}
}
return nullptr;
}
already_AddRefed<nsZipArchive> Omnijar::GetInnerReader(
nsIFile* aPath, const nsACString& aEntry) {
MOZ_ASSERT(IsInitialized(), "Omnijar not initialized");
if (!aEntry.EqualsLiteral(MOZ_STRINGIFY(OMNIJAR_NAME))) {
return nullptr;
}
bool equals;
nsresult rv;
if (sPath[GRE]) {
rv = sPath[GRE]->Equals(aPath, &equals);
if (NS_SUCCEEDED(rv) && equals) {
return IsNested(GRE) ? GetReader(GRE) : nullptr;
}
}
if (sPath[APP]) {
rv = sPath[APP]->Equals(aPath, &equals);
if (NS_SUCCEEDED(rv) && equals) {
return IsNested(APP) ? GetReader(APP) : nullptr;
}
}
return nullptr;
}
nsresult Omnijar::GetURIString(Type aType, nsACString& aResult) {
MOZ_ASSERT(IsInitialized(), "Omnijar not initialized");
aResult.Truncate();
// Return an empty string for APP in the unified case.
if ((aType == APP) && sIsUnified) {
return NS_OK;
}
nsAutoCString omniJarSpec;
if (sPath[aType]) {
nsresult rv = NS_GetURLSpecFromActualFile(sPath[aType], omniJarSpec);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
aResult = "jar:";
if (IsNested(aType)) {
aResult += "jar:";
}
aResult += omniJarSpec;
aResult += "!";
if (IsNested(aType)) {
aResult += "/" MOZ_STRINGIFY(OMNIJAR_NAME) "!";
}
} else {
nsCOMPtr<nsIFile> dir;
nsDirectoryService::gService->Get(SPROP(aType), NS_GET_IID(nsIFile),
getter_AddRefs(dir));
nsresult rv = NS_GetURLSpecFromActualFile(dir, aResult);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
}
aResult += "/";
return NS_OK;
}
#if defined(MOZ_WIDGET_ANDROID) && defined(MOZ_DIAGNOSTIC_ASSERT_ENABLED)
# define ANDROID_DIAGNOSTIC_CRASH_OR_EXIT(_msg) MOZ_CRASH(_msg)
#elif defined(MOZ_WIDGET_ANDROID)
# define ANDROID_DIAGNOSTIC_CRASH_OR_EXIT(_msg) ipc::ProcessChild::QuickExit()
#else
# define ANDROID_DIAGNOSTIC_CRASH_OR_EXIT(_msg)
#endif
void Omnijar::ChildProcessInit(int& aArgc, char** aArgv) {
nsCOMPtr<nsIFile> greOmni, appOmni;
// Android builds are always packaged, so if we can't find anything for
// greOmni, then this content process is useless, so kill it immediately.
// On release, we do this via QuickExit() because the crash volume is so
if (auto greOmniStr = geckoargs::sGREOmni.Get(aArgc, aArgv)) {
if (NS_WARN_IF(NS_FAILED(
XRE_GetFileFromPath(*greOmniStr, getter_AddRefs(greOmni))))) {
ANDROID_DIAGNOSTIC_CRASH_OR_EXIT("XRE_GetFileFromPath failed");
greOmni = nullptr;
}
} else {
ANDROID_DIAGNOSTIC_CRASH_OR_EXIT("sGREOmni.Get failed");
}
if (auto appOmniStr = geckoargs::sAppOmni.Get(aArgc, aArgv)) {
if (NS_WARN_IF(NS_FAILED(
XRE_GetFileFromPath(*appOmniStr, getter_AddRefs(appOmni))))) {
appOmni = nullptr;
}
}
// If we're unified, then only the -greomni flag is present
// (reflecting the state of sPath in the parent process) but that
// path should be used for both (not nullptr, which will try to
// invoke the directory service, which probably isn't up yet.)
if (!appOmni) {
appOmni = greOmni;
}
if (greOmni) {
Init(greOmni, appOmni);
} else {
// We should never have an appOmni without a greOmni.
MOZ_ASSERT(!appOmni);
}
}
#undef ANDROID_DIAGNOSTIC_CRASH_OR_EXIT
} /* namespace mozilla */