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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "content/common/sandbox_policy.h" | 5 #include "content/common/sandbox_policy.h" |
6 | 6 |
7 #include <string> | 7 #include <string> |
8 | 8 |
9 #include "base/command_line.h" | 9 #include "base/command_line.h" |
10 #include "base/debug/debugger.h" | 10 #include "base/debug/debugger.h" |
11 #include "base/debug/trace_event.h" | 11 #include "base/debug/trace_event.h" |
12 #include "base/file_util.h" | 12 #include "base/file_util.h" |
13 #include "base/logging.h" | 13 #include "base/logging.h" |
14 #include "base/path_service.h" | 14 #include "base/path_service.h" |
15 #include "base/process_util.h" | 15 #include "base/process_util.h" |
16 #include "base/stringprintf.h" | 16 #include "base/stringprintf.h" |
17 #include "base/string_util.h" | 17 #include "base/string_util.h" |
18 #include "base/win/scoped_handle.h" | 18 #include "base/win/scoped_handle.h" |
19 #include "base/win/scoped_process_information.h" | 19 #include "base/win/scoped_process_information.h" |
20 #include "base/win/windows_version.h" | 20 #include "base/win/windows_version.h" |
21 #include "content/common/debug_flags.h" | 21 #include "content/common/debug_flags.h" |
22 #include "content/public/common/content_client.h" | 22 #include "content/public/common/content_client.h" |
23 #include "content/public/common/content_switches.h" | 23 #include "content/public/common/content_switches.h" |
24 #include "content/public/common/process_type.h" | 24 #include "content/public/common/process_type.h" |
| 25 #include "content/public/common/sandbox_init.h" |
25 #include "sandbox/src/sandbox.h" | 26 #include "sandbox/src/sandbox.h" |
26 #include "ui/gfx/gl/gl_switches.h" | 27 #include "ui/gfx/gl/gl_switches.h" |
27 | 28 |
28 static sandbox::BrokerServices* g_broker_services = NULL; | 29 static sandbox::BrokerServices* g_broker_services = NULL; |
29 static sandbox::TargetServices* g_target_services = NULL; | 30 static sandbox::TargetServices* g_target_services = NULL; |
30 | 31 |
31 namespace { | 32 namespace { |
32 | 33 |
33 // The DLLs listed here are known (or under strong suspicion) of causing crashes | 34 // The DLLs listed here are known (or under strong suspicion) of causing crashes |
34 // when they are loaded in the renderer. Note: at runtime we generate short | 35 // when they are loaded in the renderer. Note: at runtime we generate short |
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451 } | 452 } |
452 | 453 |
453 bool InitTargetServices(sandbox::TargetServices* target_services) { | 454 bool InitTargetServices(sandbox::TargetServices* target_services) { |
454 DCHECK(target_services); | 455 DCHECK(target_services); |
455 DCHECK(!g_target_services); | 456 DCHECK(!g_target_services); |
456 sandbox::ResultCode result = target_services->Init(); | 457 sandbox::ResultCode result = target_services->Init(); |
457 g_target_services = target_services; | 458 g_target_services = target_services; |
458 return SBOX_ALL_OK == result; | 459 return SBOX_ALL_OK == result; |
459 } | 460 } |
460 | 461 |
461 bool BrokerDuplicateHandle(HANDLE source_handle, | |
462 DWORD target_process_id, | |
463 HANDLE* target_handle, | |
464 DWORD desired_access, | |
465 DWORD options) { | |
466 // If our process is the target just duplicate the handle. | |
467 if (::GetCurrentProcessId() == target_process_id) { | |
468 return !!::DuplicateHandle(::GetCurrentProcess(), source_handle, | |
469 ::GetCurrentProcess(), target_handle, | |
470 desired_access, FALSE, options); | |
471 | |
472 } | |
473 | |
474 // Try the broker next | |
475 if (g_target_services && | |
476 g_target_services->DuplicateHandle(source_handle, target_process_id, | |
477 target_handle, desired_access, | |
478 options) == SBOX_ALL_OK) { | |
479 return true; | |
480 } | |
481 | |
482 // Finally, see if we already have access to the process. | |
483 base::win::ScopedHandle target_process; | |
484 target_process.Set(::OpenProcess(PROCESS_DUP_HANDLE, FALSE, | |
485 target_process_id)); | |
486 if (target_process.IsValid()) { | |
487 return !!::DuplicateHandle(::GetCurrentProcess(), source_handle, | |
488 target_process, target_handle, | |
489 desired_access, FALSE, options); | |
490 } | |
491 | |
492 return false; | |
493 } | |
494 | |
495 | |
496 base::ProcessHandle StartProcessWithAccess(CommandLine* cmd_line, | 462 base::ProcessHandle StartProcessWithAccess(CommandLine* cmd_line, |
497 const FilePath& exposed_dir) { | 463 const FilePath& exposed_dir) { |
498 const CommandLine& browser_command_line = *CommandLine::ForCurrentProcess(); | 464 const CommandLine& browser_command_line = *CommandLine::ForCurrentProcess(); |
499 content::ProcessType type; | 465 content::ProcessType type; |
500 std::string type_str = cmd_line->GetSwitchValueASCII(switches::kProcessType); | 466 std::string type_str = cmd_line->GetSwitchValueASCII(switches::kProcessType); |
501 if (type_str == switches::kRendererProcess) { | 467 if (type_str == switches::kRendererProcess) { |
502 type = content::PROCESS_TYPE_RENDERER; | 468 type = content::PROCESS_TYPE_RENDERER; |
503 } else if (type_str == switches::kPluginProcess) { | 469 } else if (type_str == switches::kPluginProcess) { |
504 type = content::PROCESS_TYPE_PLUGIN; | 470 type = content::PROCESS_TYPE_PLUGIN; |
505 } else if (type_str == switches::kWorkerProcess) { | 471 } else if (type_str == switches::kWorkerProcess) { |
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681 | 647 |
682 // Help the process a little. It can't start the debugger by itself if | 648 // Help the process a little. It can't start the debugger by itself if |
683 // the process is in a sandbox. | 649 // the process is in a sandbox. |
684 if (child_needs_help) | 650 if (child_needs_help) |
685 base::debug::SpawnDebuggerOnProcess(target.process_id()); | 651 base::debug::SpawnDebuggerOnProcess(target.process_id()); |
686 | 652 |
687 return target.TakeProcessHandle(); | 653 return target.TakeProcessHandle(); |
688 } | 654 } |
689 | 655 |
690 } // namespace sandbox | 656 } // namespace sandbox |
| 657 |
| 658 namespace content { |
| 659 |
| 660 bool BrokerDuplicateHandle(HANDLE source_handle, |
| 661 DWORD target_process_id, |
| 662 HANDLE* target_handle, |
| 663 DWORD desired_access, |
| 664 DWORD options) { |
| 665 // If our process is the target just duplicate the handle. |
| 666 if (::GetCurrentProcessId() == target_process_id) { |
| 667 return !!::DuplicateHandle(::GetCurrentProcess(), source_handle, |
| 668 ::GetCurrentProcess(), target_handle, |
| 669 desired_access, FALSE, options); |
| 670 |
| 671 } |
| 672 |
| 673 // Try the broker next |
| 674 if (g_target_services && |
| 675 g_target_services->DuplicateHandle(source_handle, target_process_id, |
| 676 target_handle, desired_access, |
| 677 options) == sandbox::SBOX_ALL_OK) { |
| 678 return true; |
| 679 } |
| 680 |
| 681 // Finally, see if we already have access to the process. |
| 682 base::win::ScopedHandle target_process; |
| 683 target_process.Set(::OpenProcess(PROCESS_DUP_HANDLE, FALSE, |
| 684 target_process_id)); |
| 685 if (target_process.IsValid()) { |
| 686 return !!::DuplicateHandle(::GetCurrentProcess(), source_handle, |
| 687 target_process, target_handle, |
| 688 desired_access, FALSE, options); |
| 689 } |
| 690 |
| 691 return false; |
| 692 } |
| 693 |
| 694 } // namespace content |
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