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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "InjectCrashReporter.h"
#include "nsDirectoryServiceUtils.h"
#include "nsDirectoryServiceDefs.h"
#include "windows/crash_generation/crash_generation_client.h"
#include "nsExceptionHandler.h"
#include "LoadLibraryRemote.h"
#include "nsWindowsHelpers.h"
using CrashReporter::GetChildNotificationPipe;
using google_breakpad::CrashGenerationClient;
namespace mozilla {
InjectCrashRunnable::InjectCrashRunnable(DWORD pid)
: Runnable("InjectCrashRunnable"), mPID(pid) {
nsCOMPtr<nsIFile> dll;
nsresult rv = NS_GetSpecialDirectory(NS_GRE_DIR, getter_AddRefs(dll));
if (NS_SUCCEEDED(rv)) {
dll->Append(u"breakpadinjector.dll"_ns);
dll->GetPath(mInjectorPath);
}
}
NS_IMETHODIMP
InjectCrashRunnable::Run() {
if (mInjectorPath.IsEmpty()) return NS_OK;
nsAutoHandle hProcess(OpenProcess(
PROCESS_CREATE_THREAD | PROCESS_QUERY_INFORMATION | PROCESS_DUP_HANDLE |
PROCESS_VM_OPERATION | PROCESS_VM_WRITE | PROCESS_VM_READ,
FALSE, mPID));
if (!hProcess) {
NS_WARNING(
"Unable to open remote process handle for crashreporter injection.");
return NS_OK;
}
void* proc =
LoadRemoteLibraryAndGetAddress(hProcess, mInjectorPath.get(), "Start");
if (!proc) {
NS_WARNING("Unable to inject crashreporter DLL.");
return NS_OK;
}
HANDLE hRemotePipe = CrashGenerationClient::DuplicatePipeToClientProcess(
NS_ConvertASCIItoUTF16(GetChildNotificationPipe()).get(), hProcess);
if (INVALID_HANDLE_VALUE == hRemotePipe) {
NS_WARNING("Unable to duplicate crash reporter pipe to process.");
return NS_OK;
}
nsAutoHandle hThread(CreateRemoteThread(hProcess, nullptr, 0,
(LPTHREAD_START_ROUTINE)proc,
(void*)hRemotePipe, 0, nullptr));
if (!hThread) {
NS_WARNING("Unable to CreateRemoteThread");
// We have to close the remote pipe or else our crash generation client
// will be stuck unable to accept other remote requests.
HANDLE toClose = INVALID_HANDLE_VALUE;
if (DuplicateHandle(hProcess, hRemotePipe, ::GetCurrentProcess(), &toClose,
0, FALSE,
DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS)) {
CloseHandle(toClose);
return NS_OK;
}
}
return NS_OK;
}
} // namespace mozilla