michael@0: /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
michael@0:  * This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #include "Omnijar.h"
michael@0: 
michael@0: #include "nsDirectoryService.h"
michael@0: #include "nsDirectoryServiceDefs.h"
michael@0: #include "nsIFile.h"
michael@0: #include "nsZipArchive.h"
michael@0: #include "nsNetUtil.h"
michael@0: 
michael@0: namespace mozilla {
michael@0: 
michael@0: nsIFile *Omnijar::sPath[2] = { nullptr, nullptr };
michael@0: nsZipArchive *Omnijar::sReader[2] = { nullptr, nullptr };
michael@0: bool Omnijar::sInitialized = false;
michael@0: static bool sIsUnified = false;
michael@0: static bool sIsNested[2] = { false, false };
michael@0: 
michael@0: static const char *sProp[2] =
michael@0:     { NS_GRE_DIR, NS_XPCOM_CURRENT_PROCESS_DIR };
michael@0: 
michael@0: #define SPROP(Type) ((Type == mozilla::Omnijar::GRE) ? sProp[GRE] : sProp[APP])
michael@0: 
michael@0: void
michael@0: Omnijar::CleanUpOne(Type aType)
michael@0: {
michael@0:     if (sReader[aType]) {
michael@0:         sReader[aType]->CloseArchive();
michael@0:         NS_IF_RELEASE(sReader[aType]);
michael@0:     }
michael@0:     sReader[aType] = nullptr;
michael@0:     NS_IF_RELEASE(sPath[aType]);
michael@0: }
michael@0: 
michael@0: void
michael@0: Omnijar::InitOne(nsIFile *aPath, Type aType)
michael@0: {
michael@0:     nsCOMPtr<nsIFile> file;
michael@0:     if (aPath) {
michael@0:         file = aPath;
michael@0:     } else {
michael@0:         nsCOMPtr<nsIFile> dir;
michael@0:         nsDirectoryService::gService->Get(SPROP(aType), NS_GET_IID(nsIFile), getter_AddRefs(dir));
michael@0:         NS_NAMED_LITERAL_CSTRING (kOmnijarName, NS_STRINGIFY(OMNIJAR_NAME));
michael@0:         if (NS_FAILED(dir->Clone(getter_AddRefs(file))) ||
michael@0:             NS_FAILED(file->AppendNative(kOmnijarName)))
michael@0:             return;
michael@0:     }
michael@0:     bool isFile;
michael@0:     if (NS_FAILED(file->IsFile(&isFile)) || !isFile) {
michael@0:         // If we're not using an omni.jar for GRE, and we don't have an
michael@0:         // omni.jar for APP, check if both directories are the same.
michael@0:         if ((aType == APP) && (!sPath[GRE])) {
michael@0:             nsCOMPtr<nsIFile> greDir, appDir;
michael@0:             bool equals;
michael@0:             nsDirectoryService::gService->Get(SPROP(GRE), NS_GET_IID(nsIFile), getter_AddRefs(greDir));
michael@0:             nsDirectoryService::gService->Get(SPROP(APP), NS_GET_IID(nsIFile), getter_AddRefs(appDir));
michael@0:             if (NS_SUCCEEDED(greDir->Equals(appDir, &equals)) && equals)
michael@0:                 sIsUnified = true;
michael@0:         }
michael@0:         return;
michael@0:     }
michael@0: 
michael@0:     bool equals;
michael@0:     if ((aType == APP) && (sPath[GRE]) &&
michael@0:         NS_SUCCEEDED(sPath[GRE]->Equals(file, &equals)) && equals) {
michael@0:         // If we're using omni.jar on both GRE and APP and their path
michael@0:         // is the same, we're in the unified case.
michael@0:         sIsUnified = true;
michael@0:         return;
michael@0:     }
michael@0: 
michael@0:     nsRefPtr<nsZipArchive> zipReader = new nsZipArchive();
michael@0:     if (NS_FAILED(zipReader->OpenArchive(file))) {
michael@0:         return;
michael@0:     }
michael@0: 
michael@0:     nsRefPtr<nsZipHandle> handle;
michael@0:     if (NS_SUCCEEDED(nsZipHandle::Init(zipReader, NS_STRINGIFY(OMNIJAR_NAME), getter_AddRefs(handle)))) {
michael@0:         zipReader = new nsZipArchive();
michael@0:         if (NS_FAILED(zipReader->OpenArchive(handle)))
michael@0:             return;
michael@0:         sIsNested[aType] = true;
michael@0:     }
michael@0: 
michael@0:     CleanUpOne(aType);
michael@0:     sReader[aType] = zipReader;
michael@0:     NS_IF_ADDREF(sReader[aType]);
michael@0:     sPath[aType] = file;
michael@0:     NS_IF_ADDREF(sPath[aType]);
michael@0: }
michael@0: 
michael@0: void
michael@0: Omnijar::Init(nsIFile *aGrePath, nsIFile *aAppPath)
michael@0: {
michael@0:     InitOne(aGrePath, GRE);
michael@0:     InitOne(aAppPath, APP);
michael@0:     sInitialized = true;
michael@0: }
michael@0: 
michael@0: void
michael@0: Omnijar::CleanUp()
michael@0: {
michael@0:     CleanUpOne(GRE);
michael@0:     CleanUpOne(APP);
michael@0:     sInitialized = false;
michael@0: }
michael@0: 
michael@0: already_AddRefed<nsZipArchive>
michael@0: Omnijar::GetReader(nsIFile *aPath)
michael@0: {
michael@0:     NS_ABORT_IF_FALSE(IsInitialized(), "Omnijar not initialized");
michael@0: 
michael@0:     bool equals;
michael@0:     nsresult rv;
michael@0: 
michael@0:     if (sPath[GRE] && !sIsNested[GRE]) {
michael@0:         rv = sPath[GRE]->Equals(aPath, &equals);
michael@0:         if (NS_SUCCEEDED(rv) && equals)
michael@0:             return GetReader(GRE);
michael@0:     }
michael@0:     if (sPath[APP] && !sIsNested[APP]) {
michael@0:         rv = sPath[APP]->Equals(aPath, &equals);
michael@0:         if (NS_SUCCEEDED(rv) && equals)
michael@0:             return GetReader(APP);
michael@0:     }
michael@0:     return nullptr;
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: Omnijar::GetURIString(Type aType, nsACString &result)
michael@0: {
michael@0:     NS_ABORT_IF_FALSE(IsInitialized(), "Omnijar not initialized");
michael@0: 
michael@0:     result.Truncate();
michael@0: 
michael@0:     // Return an empty string for APP in the unified case.
michael@0:     if ((aType == APP) && sIsUnified) {
michael@0:         return NS_OK;
michael@0:     }
michael@0: 
michael@0:     nsAutoCString omniJarSpec;
michael@0:     if (sPath[aType]) {
michael@0:         nsresult rv = NS_GetURLSpecFromActualFile(sPath[aType], omniJarSpec);
michael@0:         if (NS_WARN_IF(NS_FAILED(rv)))
michael@0:             return rv;
michael@0: 
michael@0:         result = "jar:";
michael@0:         if (sIsNested[aType])
michael@0:             result += "jar:";
michael@0:         result += omniJarSpec;
michael@0:         result += "!";
michael@0:         if (sIsNested[aType])
michael@0:             result += "/" NS_STRINGIFY(OMNIJAR_NAME) "!";
michael@0:     } else {
michael@0:         nsCOMPtr<nsIFile> dir;
michael@0:         nsDirectoryService::gService->Get(SPROP(aType), NS_GET_IID(nsIFile), getter_AddRefs(dir));
michael@0:         nsresult rv = NS_GetURLSpecFromActualFile(dir, result);
michael@0:         if (NS_WARN_IF(NS_FAILED(rv)))
michael@0:             return rv;
michael@0:     }
michael@0:     result += "/";
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: } /* namespace mozilla */