security/sandbox/win/src/named_pipe_policy.cc@6474c204b198 (annotated)
security/sandbox/win/src/named_pipe_policy.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 "sandbox/win/src/named_pipe_policy.h" |
| michael@0 | 6 | |
| michael@0 | 7 | #include <string> |
| michael@0 | 8 | |
| michael@0 | 9 | #include "sandbox/win/src/ipc_tags.h" |
| michael@0 | 10 | #include "sandbox/win/src/policy_engine_opcodes.h" |
| michael@0 | 11 | #include "sandbox/win/src/policy_params.h" |
| michael@0 | 12 | #include "sandbox/win/src/sandbox_types.h" |
| michael@0 | 13 | |
| michael@0 | 14 | namespace { |
| michael@0 | 15 | |
| michael@0 | 16 | // Creates a named pipe and duplicates the handle to 'target_process'. The |
| michael@0 | 17 | // remaining parameters are the same as CreateNamedPipeW(). |
| michael@0 | 18 | HANDLE CreateNamedPipeHelper(HANDLE target_process, LPCWSTR pipe_name, |
| michael@0 | 19 | DWORD open_mode, DWORD pipe_mode, |
| michael@0 | 20 | DWORD max_instances, DWORD out_buffer_size, |
| michael@0 | 21 | DWORD in_buffer_size, DWORD default_timeout, |
| michael@0 | 22 | LPSECURITY_ATTRIBUTES security_attributes) { |
| michael@0 | 23 | HANDLE pipe = ::CreateNamedPipeW(pipe_name, open_mode, pipe_mode, |
| michael@0 | 24 | max_instances, out_buffer_size, |
| michael@0 | 25 | in_buffer_size, default_timeout, |
| michael@0 | 26 | security_attributes); |
| michael@0 | 27 | if (INVALID_HANDLE_VALUE == pipe) |
| michael@0 | 28 | return pipe; |
| michael@0 | 29 | |
| michael@0 | 30 | HANDLE new_pipe; |
| michael@0 | 31 | if (!::DuplicateHandle(::GetCurrentProcess(), pipe, |
| michael@0 | 32 | target_process, &new_pipe, |
| michael@0 | 33 | 0, FALSE, |
| michael@0 | 34 | DUPLICATE_CLOSE_SOURCE | DUPLICATE_SAME_ACCESS)) { |
| michael@0 | 35 | return INVALID_HANDLE_VALUE; |
| michael@0 | 36 | } |
| michael@0 | 37 | |
| michael@0 | 38 | return new_pipe; |
| michael@0 | 39 | } |
| michael@0 | 40 | |
| michael@0 | 41 | } // namespace |
| michael@0 | 42 | |
| michael@0 | 43 | namespace sandbox { |
| michael@0 | 44 | |
| michael@0 | 45 | bool NamedPipePolicy::GenerateRules(const wchar_t* name, |
| michael@0 | 46 | TargetPolicy::Semantics semantics, |
| michael@0 | 47 | LowLevelPolicy* policy) { |
| michael@0 | 48 | if (TargetPolicy::NAMEDPIPES_ALLOW_ANY != semantics) { |
| michael@0 | 49 | return false; |
| michael@0 | 50 | } |
| michael@0 | 51 | PolicyRule pipe(ASK_BROKER); |
| michael@0 | 52 | if (!pipe.AddStringMatch(IF, NameBased::NAME, name, CASE_INSENSITIVE)) { |
| michael@0 | 53 | return false; |
| michael@0 | 54 | } |
| michael@0 | 55 | if (!policy->AddRule(IPC_CREATENAMEDPIPEW_TAG, &pipe)) { |
| michael@0 | 56 | return false; |
| michael@0 | 57 | } |
| michael@0 | 58 | return true; |
| michael@0 | 59 | } |
| michael@0 | 60 | |
| michael@0 | 61 | DWORD NamedPipePolicy::CreateNamedPipeAction(EvalResult eval_result, |
| michael@0 | 62 | const ClientInfo& client_info, |
| michael@0 | 63 | const std::wstring &name, |
| michael@0 | 64 | DWORD open_mode, DWORD pipe_mode, |
| michael@0 | 65 | DWORD max_instances, |
| michael@0 | 66 | DWORD out_buffer_size, |
| michael@0 | 67 | DWORD in_buffer_size, |
| michael@0 | 68 | DWORD default_timeout, |
| michael@0 | 69 | HANDLE* pipe) { |
| michael@0 | 70 | // The only action supported is ASK_BROKER which means create the pipe. |
| michael@0 | 71 | if (ASK_BROKER != eval_result) { |
| michael@0 | 72 | return ERROR_ACCESS_DENIED; |
| michael@0 | 73 | } |
| michael@0 | 74 | |
| michael@0 | 75 | *pipe = CreateNamedPipeHelper(client_info.process, name.c_str(), |
| michael@0 | 76 | open_mode, pipe_mode, max_instances, |
| michael@0 | 77 | out_buffer_size, in_buffer_size, |
| michael@0 | 78 | default_timeout, NULL); |
| michael@0 | 79 | |
| michael@0 | 80 | if (INVALID_HANDLE_VALUE == *pipe) |
| michael@0 | 81 | return ERROR_ACCESS_DENIED; |
| michael@0 | 82 | |
| michael@0 | 83 | return ERROR_SUCCESS; |
| michael@0 | 84 | } |
| michael@0 | 85 | |
| michael@0 | 86 | } // namespace sandbox |
