widget/windows/LSPAnnotator.cpp@b8a032363ba2 (annotated)
widget/windows/LSPAnnotator.cpp
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 3 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | /** |
| michael@0 | 6 | * LSPs are evil little bits of code that are allowed to inject into our |
| michael@0 | 7 | * networking stack by Windows. Once they have wormed into our process |
| michael@0 | 8 | * they gnaw at our innards until we crash. Here we force the buggers |
| michael@0 | 9 | * into the light by recording them in our crash information. |
| michael@0 | 10 | * We do the enumeration on a thread because I'm concerned about startup perf |
| michael@0 | 11 | * on machines with several LSPs. |
| michael@0 | 12 | */ |
| michael@0 | 13 | |
| michael@0 | 14 | #include "nsICrashReporter.h" |
| michael@0 | 15 | #include "nsISupportsImpl.h" |
| michael@0 | 16 | #include "nsServiceManagerUtils.h" |
| michael@0 | 17 | #include "nsThreadUtils.h" |
| michael@0 | 18 | #include <windows.h> |
| michael@0 | 19 | #include <ws2spi.h> |
| michael@0 | 20 | |
| michael@0 | 21 | namespace mozilla { |
| michael@0 | 22 | namespace crashreporter { |
| michael@0 | 23 | |
| michael@0 | 24 | class LSPAnnotationGatherer : public nsRunnable |
| michael@0 | 25 | { |
| michael@0 | 26 | public: |
| michael@0 | 27 | NS_DECL_THREADSAFE_ISUPPORTS |
| michael@0 | 28 | NS_DECL_NSIRUNNABLE |
| michael@0 | 29 | |
| michael@0 | 30 | void Annotate(); |
| michael@0 | 31 | nsCString mString; |
| michael@0 | 32 | nsCOMPtr<nsIThread> mThread; |
| michael@0 | 33 | }; |
| michael@0 | 34 | |
| michael@0 | 35 | NS_IMPL_ISUPPORTS(LSPAnnotationGatherer, nsIRunnable) |
| michael@0 | 36 | |
| michael@0 | 37 | void |
| michael@0 | 38 | LSPAnnotationGatherer::Annotate() |
| michael@0 | 39 | { |
| michael@0 | 40 | nsCOMPtr<nsICrashReporter> cr = |
| michael@0 | 41 | do_GetService("@mozilla.org/toolkit/crash-reporter;1"); |
| michael@0 | 42 | bool enabled; |
| michael@0 | 43 | if (cr && NS_SUCCEEDED(cr->GetEnabled(&enabled)) && enabled) { |
| michael@0 | 44 | cr->AnnotateCrashReport(NS_LITERAL_CSTRING("Winsock_LSP"), mString); |
| michael@0 | 45 | } |
| michael@0 | 46 | mThread->Shutdown(); |
| michael@0 | 47 | } |
| michael@0 | 48 | |
| michael@0 | 49 | NS_IMETHODIMP |
| michael@0 | 50 | LSPAnnotationGatherer::Run() |
| michael@0 | 51 | { |
| michael@0 | 52 | PR_SetCurrentThreadName("LSP Annotator"); |
| michael@0 | 53 | |
| michael@0 | 54 | mThread = NS_GetCurrentThread(); |
| michael@0 | 55 | |
| michael@0 | 56 | DWORD size = 0; |
| michael@0 | 57 | int err; |
| michael@0 | 58 | // Get the size of the buffer we need |
| michael@0 | 59 | if (SOCKET_ERROR != WSCEnumProtocols(nullptr, nullptr, &size, &err) || |
| michael@0 | 60 | err != WSAENOBUFS) { |
| michael@0 | 61 | // Er, what? |
| michael@0 | 62 | NS_NOTREACHED("WSCEnumProtocols suceeded when it should have failed ..."); |
| michael@0 | 63 | return NS_ERROR_FAILURE; |
| michael@0 | 64 | } |
| michael@0 | 65 | |
| michael@0 | 66 | nsAutoArrayPtr<char> byteArray(new char[size]); |
| michael@0 | 67 | WSAPROTOCOL_INFOW* providers = |
| michael@0 | 68 | reinterpret_cast<WSAPROTOCOL_INFOW*>(byteArray.get()); |
| michael@0 | 69 | |
| michael@0 | 70 | int n = WSCEnumProtocols(nullptr, providers, &size, &err); |
| michael@0 | 71 | if (n == SOCKET_ERROR) { |
| michael@0 | 72 | // Lame. We provided the right size buffer; we'll just give up now. |
| michael@0 | 73 | NS_WARNING("Could not get LSP list"); |
| michael@0 | 74 | return NS_ERROR_FAILURE; |
| michael@0 | 75 | } |
| michael@0 | 76 | |
| michael@0 | 77 | nsCString str; |
| michael@0 | 78 | for (int i = 0; i < n; i++) { |
| michael@0 | 79 | AppendUTF16toUTF8(nsDependentString(providers[i].szProtocol), str); |
| michael@0 | 80 | str.AppendLiteral(" : "); |
| michael@0 | 81 | str.AppendInt(providers[i].iVersion); |
| michael@0 | 82 | str.AppendLiteral(" : "); |
| michael@0 | 83 | str.AppendInt(providers[i].iSocketType); |
| michael@0 | 84 | str.AppendLiteral(" : "); |
| michael@0 | 85 | |
| michael@0 | 86 | wchar_t path[MAX_PATH]; |
| michael@0 | 87 | int dummy; |
| michael@0 | 88 | if (!WSCGetProviderPath(&providers[i].ProviderId, path, |
| michael@0 | 89 | &dummy, &err)) { |
| michael@0 | 90 | AppendUTF16toUTF8(nsDependentString(path), str); |
| michael@0 | 91 | } |
| michael@0 | 92 | |
| michael@0 | 93 | if (i + 1 != n) { |
| michael@0 | 94 | str.AppendLiteral(" \n "); |
| michael@0 | 95 | } |
| michael@0 | 96 | } |
| michael@0 | 97 | |
| michael@0 | 98 | mString = str; |
| michael@0 | 99 | NS_DispatchToMainThread(NS_NewRunnableMethod(this, &LSPAnnotationGatherer::Annotate)); |
| michael@0 | 100 | return NS_OK; |
| michael@0 | 101 | } |
| michael@0 | 102 | |
| michael@0 | 103 | void LSPAnnotate() |
| michael@0 | 104 | { |
| michael@0 | 105 | nsCOMPtr<nsIThread> thread; |
| michael@0 | 106 | nsCOMPtr<nsIRunnable> runnable = |
| michael@0 | 107 | do_QueryObject(new LSPAnnotationGatherer()); |
| michael@0 | 108 | NS_NewThread(getter_AddRefs(thread), runnable); |
| michael@0 | 109 | } |
| michael@0 | 110 | |
| michael@0 | 111 | } // namespace crashreporter |
| michael@0 | 112 | } // namespace mozilla |
