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Side by Side Diff: sandbox/win/src/handle_closer.h

Issue 1851213002: Remove sandbox on Windows. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: fix nacl compile issues Created 4 years, 8 months ago
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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
3 // found in the LICENSE file.
4
5 #ifndef SANDBOX_SRC_HANDLE_CLOSER_H_
6 #define SANDBOX_SRC_HANDLE_CLOSER_H_
7
8 #include <stddef.h>
9
10 #include <map>
11 #include <set>
12
13 #include "base/macros.h"
14 #include "base/strings/string16.h"
15 #include "sandbox/win/src/interception.h"
16 #include "sandbox/win/src/sandbox_types.h"
17 #include "sandbox/win/src/target_process.h"
18
19 namespace sandbox {
20
21 // This is a map of handle-types to names that we need to close in the
22 // target process. A null set means we need to close all handles of the
23 // given type.
24 typedef std::map<const base::string16, std::set<base::string16> > HandleMap;
25
26 // Type and set of corresponding handle names to close.
27 struct HandleListEntry {
28 size_t record_bytes; // Rounded to sizeof(size_t) bytes.
29 size_t offset_to_names; // Nul terminated strings of name_count names.
30 size_t name_count;
31 base::char16 handle_type[1];
32 };
33
34 // Global parameters and a pointer to the list of entries.
35 struct HandleCloserInfo {
36 size_t record_bytes; // Rounded to sizeof(size_t) bytes.
37 size_t num_handle_types;
38 struct HandleListEntry handle_entries[1];
39 };
40
41 SANDBOX_INTERCEPT HandleCloserInfo* g_handle_closer_info;
42
43 // Adds handles to close after lockdown.
44 class HandleCloser {
45 public:
46 HandleCloser();
47 ~HandleCloser();
48
49 // Adds a handle that will be closed in the target process after lockdown.
50 // A NULL value for handle_name indicates all handles of the specified type.
51 // An empty string for handle_name indicates the handle is unnamed.
52 ResultCode AddHandle(const base::char16* handle_type,
53 const base::char16* handle_name);
54
55 // Serializes and copies the closer table into the target process.
56 bool InitializeTargetHandles(TargetProcess* target);
57
58 private:
59 // Calculates the memory needed to copy the serialized handles list (rounded
60 // to the nearest machine-word size).
61 size_t GetBufferSize();
62
63 // Serializes the handle list into the target process.
64 bool SetupHandleList(void* buffer, size_t buffer_bytes);
65
66 HandleMap handles_to_close_;
67
68 DISALLOW_COPY_AND_ASSIGN(HandleCloser);
69 };
70
71 // Returns the object manager's name associated with a handle
72 bool GetHandleName(HANDLE handle, base::string16* handle_name);
73
74 } // namespace sandbox
75
76 #endif // SANDBOX_SRC_HANDLE_CLOSER_H_
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