ipc/chromium/src/base/debug_on_start.cc@6474c204b198 (annotated)
ipc/chromium/src/base/debug_on_start.cc
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. |
| michael@0 | 2 | // Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 3 | // found in the LICENSE file. |
| michael@0 | 4 | |
| michael@0 | 5 | #include <windows.h> |
| michael@0 | 6 | |
| michael@0 | 7 | #include "base/debug_on_start.h" |
| michael@0 | 8 | |
| michael@0 | 9 | #include "base/base_switches.h" |
| michael@0 | 10 | #include "base/basictypes.h" |
| michael@0 | 11 | #include "base/debug_util.h" |
| michael@0 | 12 | |
| michael@0 | 13 | // Minimalist implementation to try to find a command line argument. We can use |
| michael@0 | 14 | // kernel32 exported functions but not the CRT functions because we're too early |
| michael@0 | 15 | // in the process startup. |
| michael@0 | 16 | // The code is not that bright and will find things like ---argument or |
| michael@0 | 17 | // /-/argument. |
| michael@0 | 18 | // Note: command_line is non-destructively modified. |
| michael@0 | 19 | bool DebugOnStart::FindArgument(wchar_t* command_line, const wchar_t* argument) |
| michael@0 | 20 | { |
| michael@0 | 21 | int argument_len = lstrlen(argument); |
| michael@0 | 22 | int command_line_len = lstrlen(command_line); |
| michael@0 | 23 | while (command_line_len > argument_len) { |
| michael@0 | 24 | wchar_t first_char = command_line[0]; |
| michael@0 | 25 | wchar_t last_char = command_line[argument_len+1]; |
| michael@0 | 26 | // Try to find an argument. |
| michael@0 | 27 | if ((first_char == L'-' || first_char == L'/') && |
| michael@0 | 28 | (last_char == L' ' || last_char == 0 || last_char == L'=')) { |
| michael@0 | 29 | command_line[argument_len+1] = 0; |
| michael@0 | 30 | // Skip the - or / |
| michael@0 | 31 | if (lstrcmpi(command_line+1, argument) == 0) { |
| michael@0 | 32 | // Found it. |
| michael@0 | 33 | command_line[argument_len+1] = last_char; |
| michael@0 | 34 | return true; |
| michael@0 | 35 | } |
| michael@0 | 36 | // Fix back. |
| michael@0 | 37 | command_line[argument_len+1] = last_char; |
| michael@0 | 38 | } |
| michael@0 | 39 | // Continue searching. |
| michael@0 | 40 | ++command_line; |
| michael@0 | 41 | --command_line_len; |
| michael@0 | 42 | } |
| michael@0 | 43 | return false; |
| michael@0 | 44 | } |
| michael@0 | 45 | |
| michael@0 | 46 | // static |
| michael@0 | 47 | int __cdecl DebugOnStart::Init() { |
| michael@0 | 48 | // Try to find the argument. |
| michael@0 | 49 | if (FindArgument(GetCommandLine(), switches::kDebugOnStart)) { |
| michael@0 | 50 | // We can do 2 things here: |
| michael@0 | 51 | // - Ask for a debugger to attach to us. This involve reading the registry |
| michael@0 | 52 | // key and creating the process. |
| michael@0 | 53 | // - Do a int3. |
| michael@0 | 54 | |
| michael@0 | 55 | // It will fails if we run in a sandbox. That is expected. |
| michael@0 | 56 | DebugUtil::SpawnDebuggerOnProcess(GetCurrentProcessId()); |
| michael@0 | 57 | |
| michael@0 | 58 | // Wait for a debugger to come take us. |
| michael@0 | 59 | DebugUtil::WaitForDebugger(60, false); |
| michael@0 | 60 | } else if (FindArgument(GetCommandLine(), switches::kWaitForDebugger)) { |
| michael@0 | 61 | // Wait for a debugger to come take us. |
| michael@0 | 62 | DebugUtil::WaitForDebugger(60, true); |
| michael@0 | 63 | } |
| michael@0 | 64 | return 0; |
| michael@0 | 65 | } |
