116 lines
3.1 KiB
C++
116 lines
3.1 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/**
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* LSPs are evil little bits of code that are allowed to inject into our
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* networking stack by Windows. Once they have wormed into our process
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* they gnaw at our innards until we crash. Here we force the buggers
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* into the light by recording them in our crash information.
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* We do the enumeration on a thread because I'm concerned about startup perf
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* on machines with several LSPs.
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*/
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#include "nsICrashReporter.h"
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#include "nsISupportsImpl.h"
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#include "nsServiceManagerUtils.h"
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#include "nsThreadUtils.h"
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#include "nsQueryObject.h"
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#include <windows.h>
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#include <ws2spi.h>
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namespace mozilla {
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namespace crashreporter {
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class LSPAnnotationGatherer : public nsRunnable
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{
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~LSPAnnotationGatherer() {}
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSIRUNNABLE
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void Annotate();
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nsCString mString;
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nsCOMPtr<nsIThread> mThread;
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};
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NS_IMPL_ISUPPORTS(LSPAnnotationGatherer, nsIRunnable)
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void
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LSPAnnotationGatherer::Annotate()
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{
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nsCOMPtr<nsICrashReporter> cr =
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do_GetService("@mozilla.org/toolkit/crash-reporter;1");
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bool enabled;
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if (cr && NS_SUCCEEDED(cr->GetEnabled(&enabled)) && enabled) {
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cr->AnnotateCrashReport(NS_LITERAL_CSTRING("Winsock_LSP"), mString);
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}
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mThread->Shutdown();
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}
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NS_IMETHODIMP
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LSPAnnotationGatherer::Run()
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{
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PR_SetCurrentThreadName("LSP Annotator");
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mThread = NS_GetCurrentThread();
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DWORD size = 0;
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int err;
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// Get the size of the buffer we need
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if (SOCKET_ERROR != WSCEnumProtocols(nullptr, nullptr, &size, &err) ||
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err != WSAENOBUFS) {
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// Er, what?
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NS_NOTREACHED("WSCEnumProtocols suceeded when it should have failed ...");
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return NS_ERROR_FAILURE;
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}
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auto byteArray = MakeUnique<char[]>(size);
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WSAPROTOCOL_INFOW* providers =
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reinterpret_cast<WSAPROTOCOL_INFOW*>(byteArray.get());
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int n = WSCEnumProtocols(nullptr, providers, &size, &err);
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if (n == SOCKET_ERROR) {
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// Lame. We provided the right size buffer; we'll just give up now.
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NS_WARNING("Could not get LSP list");
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return NS_ERROR_FAILURE;
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}
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nsCString str;
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for (int i = 0; i < n; i++) {
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AppendUTF16toUTF8(nsDependentString(providers[i].szProtocol), str);
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str.AppendLiteral(" : ");
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str.AppendInt(providers[i].iVersion);
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str.AppendLiteral(" : ");
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str.AppendInt(providers[i].iSocketType);
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str.AppendLiteral(" : ");
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wchar_t path[MAX_PATH];
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int dummy;
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if (!WSCGetProviderPath(&providers[i].ProviderId, path,
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&dummy, &err)) {
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AppendUTF16toUTF8(nsDependentString(path), str);
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}
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if (i + 1 != n) {
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str.AppendLiteral(" \n ");
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}
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}
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mString = str;
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NS_DispatchToMainThread(NS_NewRunnableMethod(this, &LSPAnnotationGatherer::Annotate));
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return NS_OK;
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}
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void LSPAnnotate()
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{
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nsCOMPtr<nsIThread> thread;
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nsCOMPtr<nsIRunnable> runnable =
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do_QueryObject(new LSPAnnotationGatherer());
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NS_NewThread(getter_AddRefs(thread), runnable);
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}
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} // namespace crashreporter
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} // namespace mozilla
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