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/* 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 "CachePurgeLock.h"
#include "nsCOMPtr.h"
#include "nsIFile.h"
#include "nsAppRunner.h"
#include "mozilla/MultiInstanceLock.h"
#include "nsLocalFile.h"
namespace mozilla::net {
NS_IMPL_ISUPPORTS(CachePurgeLock, nsICachePurgeLock)
static nsresult PrepareLockArguments(const nsACString& profileName,
nsCString& lockName,
nsString& appDirPath) {
nsresult rv;
nsCOMPtr<nsIFile> appFile = mozilla::GetNormalizedAppFile(nullptr);
if (!appFile) {
return NS_ERROR_NOT_AVAILABLE;
}
nsCOMPtr<nsIFile> appDirFile;
rv = appFile->GetParent(getter_AddRefs(appDirFile));
NS_ENSURE_SUCCESS(rv, rv);
rv = appDirFile->GetPath(appDirPath);
NS_ENSURE_SUCCESS(rv, rv);
lockName = profileName;
lockName.Append("-cachePurge");
return NS_OK;
}
NS_IMETHODIMP
CachePurgeLock::GetLockFile(const nsACString& profileName, nsIFile** aResult) {
nsresult rv;
nsCString lockName;
nsString appDirPath;
rv = PrepareLockArguments(profileName, lockName, appDirPath);
if (NS_FAILED(rv)) {
return rv;
}
nsCString filePath;
if (!GetMultiInstanceLockFileName(lockName.get(), appDirPath.get(),
filePath)) {
return NS_ERROR_NOT_AVAILABLE;
}
nsCOMPtr<nsIFile> lockFile = new nsLocalFile();
rv = lockFile->InitWithNativePath(filePath);
NS_ENSURE_SUCCESS(rv, rv);
lockFile.forget(aResult);
return NS_OK;
}
NS_IMETHODIMP
CachePurgeLock::Lock(const nsACString& profileName) {
nsresult rv;
if (mLock != MULTI_INSTANCE_LOCK_HANDLE_ERROR) {
// Lock is already open.
return NS_OK;
}
nsCString lockName;
nsString appDirPath;
rv = PrepareLockArguments(profileName, lockName, appDirPath);
if (NS_FAILED(rv)) {
return rv;
}
mLock = mozilla::OpenMultiInstanceLock(lockName.get(), appDirPath.get());
if (mLock == MULTI_INSTANCE_LOCK_HANDLE_ERROR) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
CachePurgeLock::IsOtherInstanceRunning(bool* aResult) {
if (NS_WARN_IF(XRE_GetProcessType() != GeckoProcessType_Default)) {
return NS_ERROR_SERVICE_NOT_AVAILABLE;
}
if (mLock == MULTI_INSTANCE_LOCK_HANDLE_ERROR) {
return NS_ERROR_NOT_INITIALIZED;
}
bool rv = mozilla::IsOtherInstanceRunning(mLock, aResult);
NS_ENSURE_TRUE(rv, NS_ERROR_FAILURE);
return NS_OK;
}
NS_IMETHODIMP
CachePurgeLock::Unlock() {
if (mLock == MULTI_INSTANCE_LOCK_HANDLE_ERROR) {
// Lock is already released.
return NS_OK;
}
mozilla::ReleaseMultiInstanceLock(mLock);
mLock = MULTI_INSTANCE_LOCK_HANDLE_ERROR;
return NS_OK;
}
} // namespace mozilla::net
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