summaryrefslogtreecommitdiffstats
path: root/xpcom/build/Omnijar.cpp
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--xpcom/build/Omnijar.cpp198
1 files changed, 198 insertions, 0 deletions
diff --git a/xpcom/build/Omnijar.cpp b/xpcom/build/Omnijar.cpp
new file mode 100644
index 0000000000..2c6e3eb478
--- /dev/null
+++ b/xpcom/build/Omnijar.cpp
@@ -0,0 +1,198 @@
+/* -*- 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 "Omnijar.h"
+
+#include "nsDirectoryService.h"
+#include "nsDirectoryServiceDefs.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;
+}
+
+void Omnijar::InitOne(nsIFile* aPath, Type aType) {
+ nsCOMPtr<nsIFile> file;
+ if (aPath) {
+ file = aPath;
+ } else {
+ nsCOMPtr<nsIFile> dir;
+ nsDirectoryService::gService->Get(SPROP(aType), NS_GET_IID(nsIFile),
+ getter_AddRefs(dir));
+ constexpr auto kOmnijarName = nsLiteralCString{MOZ_STRINGIFY(OMNIJAR_NAME)};
+ if (NS_FAILED(dir->Clone(getter_AddRefs(file))) ||
+ NS_FAILED(file->AppendNative(kOmnijarName))) {
+ return;
+ }
+ }
+ bool isFile;
+ 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;
+ }
+
+ 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;
+ }
+
+ RefPtr<nsZipArchive> zipReader = nsZipArchive::OpenArchive(file);
+ if (!zipReader) {
+ return;
+ }
+
+ RefPtr<nsZipArchive> outerReader;
+ RefPtr<nsZipHandle> handle;
+ if (NS_SUCCEEDED(nsZipHandle::Init(zipReader, MOZ_STRINGIFY(OMNIJAR_NAME),
+ getter_AddRefs(handle)))) {
+ outerReader = zipReader;
+ zipReader = nsZipArchive::OpenArchive(handle);
+ if (!zipReader) {
+ return;
+ }
+ }
+
+ CleanUpOne(aType);
+ sReader[aType] = zipReader;
+ sOuterReader[aType] = outerReader;
+ sPath[aType] = file;
+}
+
+void Omnijar::Init(nsIFile* aGrePath, nsIFile* aAppPath) {
+ InitOne(aGrePath, GRE);
+ InitOne(aAppPath, APP);
+ sInitialized = true;
+}
+
+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;
+}
+
+} /* namespace mozilla */