1 files changed, 135 insertions, 0 deletions
diff --git a/widget/windows/LSPAnnotator.cpp b/widget/windows/LSPAnnotator.cpp
new file mode 100644
index 0000000000..ab3a768d66
--- /dev/null
+++ b/widget/windows/LSPAnnotator.cpp
@@ -0,0 +1,135 @@
+/* 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/. */
+
+/**
+ * LSPs are evil little bits of code that are allowed to inject into our
+ * networking stack by Windows.  Once they have wormed into our process
+ * they gnaw at our innards until we crash.  Here we force the buggers
+ * into the light by recording them in our crash information.
+ * We do the enumeration on a thread because I'm concerned about startup perf
+ * on machines with several LSPs.
+ */
+
+#include "nsICrashReporter.h"
+#include "nsISupportsImpl.h"
+#include "nsServiceManagerUtils.h"
+#include "nsThreadUtils.h"
+#include "nsQueryObject.h"
+#include "nsWindowsHelpers.h"
+#include <windows.h>
+#include <rpc.h>
+#include <ws2spi.h>
+
+namespace mozilla {
+namespace crashreporter {
+
+class LSPAnnotationGatherer : public Runnable {
+  ~LSPAnnotationGatherer() {}
+
+ public:
+  LSPAnnotationGatherer() : Runnable("crashreporter::LSPAnnotationGatherer") {}
+  NS_DECL_NSIRUNNABLE
+
+  void Annotate();
+  nsCString mString;
+};
+
+void LSPAnnotationGatherer::Annotate() {
+  nsCOMPtr<nsICrashReporter> cr =
+      do_GetService("@mozilla.org/toolkit/crash-reporter;1");
+  bool enabled;
+  if (cr && NS_SUCCEEDED(cr->GetCrashReporterEnabled(&enabled)) && enabled) {
+    cr->AnnotateCrashReport("Winsock_LSP"_ns, mString);
+  }
+}
+
+NS_IMETHODIMP
+LSPAnnotationGatherer::Run() {
+  DWORD size = 0;
+  int err;
+  // Get the size of the buffer we need
+  if (SOCKET_ERROR != WSCEnumProtocols(nullptr, nullptr, &size, &err) ||
+      err != WSAENOBUFS) {
+    // Er, what?
+    MOZ_ASSERT_UNREACHABLE(
+        "WSCEnumProtocols succeeded when it should have "
+        "failed");
+    return NS_ERROR_FAILURE;
+  }
+
+  auto byteArray = MakeUnique<char[]>(size);
+  WSAPROTOCOL_INFOW* providers =
+      reinterpret_cast<WSAPROTOCOL_INFOW*>(byteArray.get());
+
+  int n = WSCEnumProtocols(nullptr, providers, &size, &err);
+  if (n == SOCKET_ERROR) {
+    // Lame. We provided the right size buffer; we'll just give up now.
+    NS_WARNING("Could not get LSP list");
+    return NS_ERROR_FAILURE;
+  }
+
+  nsCString str;
+  for (int i = 0; i < n; i++) {
+    AppendUTF16toUTF8(nsDependentString(providers[i].szProtocol), str);
+    str.AppendLiteral(" : ");
+    str.AppendInt(providers[i].iVersion);
+    str.AppendLiteral(" : ");
+    str.AppendInt(providers[i].iAddressFamily);
+    str.AppendLiteral(" : ");
+    str.AppendInt(providers[i].iSocketType);
+    str.AppendLiteral(" : ");
+    str.AppendInt(providers[i].iProtocol);
+    str.AppendLiteral(" : ");
+    str.AppendPrintf("0x%lx", providers[i].dwServiceFlags1);
+    str.AppendLiteral(" : ");
+    str.AppendPrintf("0x%lx", providers[i].dwProviderFlags);
+    str.AppendLiteral(" : ");
+
+    wchar_t path[MAX_PATH];
+    int pathLen = MAX_PATH;
+    if (!WSCGetProviderPath(&providers[i].ProviderId, path, &pathLen, &err)) {
+      AppendUTF16toUTF8(nsDependentString(path), str);
+    }
+
+    str.AppendLiteral(" : ");
+    // Call WSCGetProviderInfo to obtain the category flags for this provider.
+    // When present, these flags inform Windows as to which order to chain the
+    // providers.
+    DWORD categoryInfo;
+    size_t categoryInfoSize = sizeof(categoryInfo);
+    if (!WSCGetProviderInfo(&providers[i].ProviderId, ProviderInfoLspCategories,
+                            (PBYTE)&categoryInfo, &categoryInfoSize, 0, &err)) {
+      str.AppendPrintf("0x%lx", categoryInfo);
+    }
+
+    str.AppendLiteral(" : ");
+    if (providers[i].ProtocolChain.ChainLen <= BASE_PROTOCOL) {
+      // If we're dealing with a catalog entry that identifies an individual
+      // base or layer provider, log its provider GUID.
+      RPC_CSTR provIdStr = nullptr;
+      if (UuidToStringA(&providers[i].ProviderId, &provIdStr) == RPC_S_OK) {
+        str.Append(reinterpret_cast<char*>(provIdStr));
+        RpcStringFreeA(&provIdStr);
+      }
+    }
+
+    if (i + 1 != n) {
+      str.AppendLiteral(" \n ");
+    }
+  }
+
+  mString = str;
+  NS_DispatchToMainThread(
+      NewRunnableMethod("crashreporter::LSPAnnotationGatherer::Annotate", this,
+                        &LSPAnnotationGatherer::Annotate));
+  return NS_OK;
+}
+
+void LSPAnnotate() {
+  nsCOMPtr<nsIRunnable> runnable(new LSPAnnotationGatherer());
+  NS_DispatchBackgroundTask(runnable.forget());
+}
+
+}  // namespace crashreporter
+}  // namespace mozilla