forked from mirrors/gecko-dev
135 lines
4.3 KiB
C++
135 lines
4.3 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 "nsWindowsHelpers.h"
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#include <windows.h>
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#include <rpc.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 Runnable {
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~LSPAnnotationGatherer() {}
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public:
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LSPAnnotationGatherer() : Runnable("crashreporter::LSPAnnotationGatherer") {}
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NS_DECL_NSIRUNNABLE
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void Annotate();
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nsCString mString;
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};
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void LSPAnnotationGatherer::Annotate() {
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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("Winsock_LSP"_ns, mString);
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}
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}
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NS_IMETHODIMP
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LSPAnnotationGatherer::Run() {
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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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MOZ_ASSERT_UNREACHABLE(
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"WSCEnumProtocols succeeded when it should have "
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"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].iAddressFamily);
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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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str.AppendInt(providers[i].iProtocol);
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str.AppendLiteral(" : ");
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str.AppendPrintf("0x%lx", providers[i].dwServiceFlags1);
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str.AppendLiteral(" : ");
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str.AppendPrintf("0x%lx", providers[i].dwProviderFlags);
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str.AppendLiteral(" : ");
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wchar_t path[MAX_PATH];
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int pathLen = MAX_PATH;
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if (!WSCGetProviderPath(&providers[i].ProviderId, path, &pathLen, &err)) {
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AppendUTF16toUTF8(nsDependentString(path), str);
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}
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str.AppendLiteral(" : ");
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// Call WSCGetProviderInfo to obtain the category flags for this provider.
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// When present, these flags inform Windows as to which order to chain the
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// providers.
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DWORD categoryInfo;
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size_t categoryInfoSize = sizeof(categoryInfo);
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if (!WSCGetProviderInfo(&providers[i].ProviderId, ProviderInfoLspCategories,
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(PBYTE)&categoryInfo, &categoryInfoSize, 0, &err)) {
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str.AppendPrintf("0x%lx", categoryInfo);
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}
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str.AppendLiteral(" : ");
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if (providers[i].ProtocolChain.ChainLen <= BASE_PROTOCOL) {
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// If we're dealing with a catalog entry that identifies an individual
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// base or layer provider, log its provider GUID.
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RPC_CSTR provIdStr = nullptr;
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if (UuidToStringA(&providers[i].ProviderId, &provIdStr) == RPC_S_OK) {
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str.Append(reinterpret_cast<char*>(provIdStr));
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RpcStringFreeA(&provIdStr);
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}
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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(
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NewRunnableMethod("crashreporter::LSPAnnotationGatherer::Annotate", this,
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&LSPAnnotationGatherer::Annotate));
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return NS_OK;
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}
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void LSPAnnotate() {
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nsCOMPtr<nsIRunnable> runnable(new LSPAnnotationGatherer());
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NS_DispatchBackgroundTask(runnable.forget());
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}
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} // namespace crashreporter
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} // namespace mozilla
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