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 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-

  * 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 {

 nsIFile *Omnijar::sPath[2] = { nullptr, nullptr };

 nsZipArchive *Omnijar::sReader[2] = { nullptr, nullptr };

 bool Omnijar::sInitialized = false;

 static bool sIsUnified = false;

 static bool sIsNested[2] = { false, 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]->CloseArchive();

         NS_IF_RELEASE(sReader[aType]);

     }

     sReader[aType] = nullptr;

     NS_IF_RELEASE(sPath[aType]);

 }

 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));

         NS_NAMED_LITERAL_CSTRING (kOmnijarName, NS_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;

     }

     nsRefPtr<nsZipArchive> zipReader = new nsZipArchive();

     if (NS_FAILED(zipReader->OpenArchive(file))) {

         return;

     }

     nsRefPtr<nsZipHandle> handle;

     if (NS_SUCCEEDED(nsZipHandle::Init(zipReader, NS_STRINGIFY(OMNIJAR_NAME), getter_AddRefs(handle)))) {

         zipReader = new nsZipArchive();

         if (NS_FAILED(zipReader->OpenArchive(handle)))

             return;

         sIsNested[aType] = true;

     }

     CleanUpOne(aType);

     sReader[aType] = zipReader;

     NS_IF_ADDREF(sReader[aType]);

     sPath[aType] = file;

     NS_IF_ADDREF(sPath[aType]);

 }

 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)

 {

     NS_ABORT_IF_FALSE(IsInitialized(), "Omnijar not initialized");

     bool equals;

     nsresult rv;

     if (sPath[GRE] && !sIsNested[GRE]) {

         rv = sPath[GRE]->Equals(aPath, &equals);

         if (NS_SUCCEEDED(rv) && equals)

             return GetReader(GRE);

     }

     if (sPath[APP] && !sIsNested[APP]) {

         rv = sPath[APP]->Equals(aPath, &equals);

         if (NS_SUCCEEDED(rv) && equals)

             return GetReader(APP);

     }

     return nullptr;

 }

 nsresult

 Omnijar::GetURIString(Type aType, nsACString &result)

 {

     NS_ABORT_IF_FALSE(IsInitialized(), "Omnijar not initialized");

     result.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;

         result = "jar:";

         if (sIsNested[aType])

             result += "jar:";

         result += omniJarSpec;

         result += "!";

         if (sIsNested[aType])

             result += "/" NS_STRINGIFY(OMNIJAR_NAME) "!";

     } else {

         nsCOMPtr<nsIFile> dir;

         nsDirectoryService::gService->Get(SPROP(aType), NS_GET_IID(nsIFile), getter_AddRefs(dir));

         nsresult rv = NS_GetURLSpecFromActualFile(dir, result);

         if (NS_WARN_IF(NS_FAILED(rv)))

             return rv;

     }

     result += "/";

     return NS_OK;

 }

 } /* namespace mozilla */