Merge pull request #323 from MoonchildProductions/nuke-sandbox

Nuke sandbox

1 files changed, 0 insertions, 131 deletions

diff --git a/security/sandbox/linux/glue/SandboxCrash.cpp b/security/sandbox/linux/glue/SandboxCrash.cpp
deleted file mode 100644
index 8ead16bdf..000000000
--- a/security/sandbox/linux/glue/SandboxCrash.cpp
+++ /dev/null
@@ -1,131 +0,0 @@
-/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* vim: set ts=8 sts=2 et sw=2 tw=80: */
-/* 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/. */
-
-// This file needs to be linked into libxul, so it can access the JS
-// stack and the crash reporter.  Everything else in this directory
-// should be able to be linked into its own shared library, in order
-// to be able to isolate sandbox/chromium from ipc/chromium.
-
-#include "SandboxInternal.h"
-#include "SandboxLogging.h"
-
-#include <unistd.h>
-#include <sys/syscall.h>
-
-#include "mozilla/Unused.h"
-#include "mozilla/dom/Exceptions.h"
-#include "nsContentUtils.h"
-#include "mozilla/StackWalk.h"
-#include "nsString.h"
-#include "nsThreadUtils.h"
-
-namespace mozilla {
-
-// Log JS stack info in the same place as the sandbox violation
-// message.  Useful in case the responsible code is JS and all we have
-// are logs and a minidump with the C++ stacks (e.g., on TBPL).
-static void
-SandboxLogJSStack(void)
-{
-  if (!NS_IsMainThread()) {
-    // This might be a worker thread... or it might be a non-JS
-    // thread, or a non-NSPR thread.  There's isn't a good API for
-    // dealing with this, yet.
-    return;
-  }
-  if (!nsContentUtils::XPConnect()) {
-    // There is no content (e.g., the process is a media plugin), in
-    // which case this will probably crash and definitely not work.
-    return;
-  }
-  nsCOMPtr<nsIStackFrame> frame = dom::GetCurrentJSStack();
-  // If we got a stack, we must have a current JSContext.  This is icky.  :(
-  // Would be better if GetCurrentJSStack() handed out the JSContext it ended up
-  // using or something.
-  JSContext* cx = frame ? nsContentUtils::GetCurrentJSContext() : nullptr;
-  for (int i = 0; frame != nullptr; ++i) {
-    nsAutoString fileName, funName;
-    int32_t lineNumber;
-
-    // Don't stop unwinding if an attribute can't be read.
-    fileName.SetIsVoid(true);
-    Unused << frame->GetFilename(cx, fileName);
-    lineNumber = 0;
-    Unused << frame->GetLineNumber(cx, &lineNumber);
-    funName.SetIsVoid(true);
-    Unused << frame->GetName(cx, funName);
-
-    if (!funName.IsVoid() || !fileName.IsVoid()) {
-      SANDBOX_LOG_ERROR("JS frame %d: %s %s line %d", i,
-                        funName.IsVoid() ?
-                        "(anonymous)" : NS_ConvertUTF16toUTF8(funName).get(),
-                        fileName.IsVoid() ?
-                        "(no file)" : NS_ConvertUTF16toUTF8(fileName).get(),
-                        lineNumber);
-    }
-
-    nsCOMPtr<nsIStackFrame> nextFrame;
-    nsresult rv = frame->GetCaller(cx, getter_AddRefs(nextFrame));
-    NS_ENSURE_SUCCESS_VOID(rv);
-    frame = nextFrame;
-  }
-}
-
-static void SandboxPrintStackFrame(uint32_t aFrameNumber, void *aPC, void *aSP,
-                                   void *aClosure)
-{
-  char buf[1024];
-  MozCodeAddressDetails details;
-
-  MozDescribeCodeAddress(aPC, &details);
-  MozFormatCodeAddressDetails(buf, sizeof(buf), aFrameNumber, aPC, &details);
-  SANDBOX_LOG_ERROR("frame %s", buf);
-}
-
-static void
-SandboxLogCStack()
-{
-  // Skip 3 frames: one for this module, one for the signal handler in
-  // libmozsandbox, and one for the signal trampoline.
-  //
-  // Warning: this might not print any stack frames.  MozStackWalk
-  // can't walk past the signal trampoline on ARM (bug 968531), and
-  // x86 frame pointer walking may or may not work (bug 1082276).
-
-  MozStackWalk(SandboxPrintStackFrame, /* skip */ 3, /* max */ 0,
-               nullptr, 0, nullptr);
-  SANDBOX_LOG_ERROR("end of stack.");
-}
-
-static void
-SandboxCrash(int nr, siginfo_t *info, void *void_context)
-{
-  pid_t pid = getpid(), tid = syscall(__NR_gettid);
-  bool dumped = false;
-
-  if (!dumped) {
-    SANDBOX_LOG_ERROR("crash reporter is disabled (or failed);"
-                      " trying stack trace:");
-    SandboxLogCStack();
-  }
-
-  // Do this last, in case it crashes or deadlocks.
-  SandboxLogJSStack();
-
-  // Try to reraise, so the parent sees that this process crashed.
-  // (If tgkill is forbidden, then seccomp will raise SIGSYS, which
-  // also accomplishes that goal.)
-  signal(SIGSYS, SIG_DFL);
-  syscall(__NR_tgkill, pid, tid, nr);
-}
-
-static void __attribute__((constructor))
-SandboxSetCrashFunc()
-{
-  gSandboxCrashFunc = SandboxCrash;
-}
-
-} // namespace mozilla