1 // Copyright (c) 2006-2008 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.
5 #ifndef SANDBOX_SRC_FILESYSTEM_POLICY_H__
6 #define SANDBOX_SRC_FILESYSTEM_POLICY_H__
10 #include "base/basictypes.h"
11 #include "base/strings/string16.h"
12 #include "sandbox/win/src/crosscall_server.h"
13 #include "sandbox/win/src/nt_internals.h"
14 #include "sandbox/win/src/policy_low_level.h"
15 #include "sandbox/win/src/sandbox_policy.h"
21 // This class centralizes most of the knowledge related to file system policy
22 class FileSystemPolicy {
24 // Creates the required low-level policy rules to evaluate a high-level
25 // policy rule for File IO, in particular open or create actions.
26 // 'name' is the file or directory name.
27 // 'semantics' is the desired semantics for the open or create.
28 // 'policy' is the policy generator to which the rules are going to be added.
29 static bool GenerateRules(const wchar_t* name,
30 TargetPolicy::Semantics semantics,
31 LowLevelPolicy* policy);
33 // Add basic file system rules.
34 static bool SetInitialRules(LowLevelPolicy* policy);
36 // Performs the desired policy action on a create request with an
37 // API that is compatible with the IPC-received parameters.
38 // 'client_info' : the target process that is making the request.
39 // 'eval_result' : The desired policy action to accomplish.
40 // 'file' : The target file or directory.
41 static bool CreateFileAction(EvalResult eval_result,
42 const ClientInfo& client_info,
43 const base::string16 &file,
45 uint32 desired_access,
46 uint32 file_attributes,
48 uint32 create_disposition,
49 uint32 create_options,
52 ULONG_PTR* io_information);
54 // Performs the desired policy action on an open request with an
55 // API that is compatible with the IPC-received parameters.
56 // 'client_info' : the target process that is making the request.
57 // 'eval_result' : The desired policy action to accomplish.
58 // 'file' : The target file or directory.
59 static bool OpenFileAction(EvalResult eval_result,
60 const ClientInfo& client_info,
61 const base::string16 &file,
63 uint32 desired_access,
68 ULONG_PTR* io_information);
70 // Performs the desired policy action on a query request with an
71 // API that is compatible with the IPC-received parameters.
72 static bool QueryAttributesFileAction(EvalResult eval_result,
73 const ClientInfo& client_info,
74 const base::string16 &file,
76 FILE_BASIC_INFORMATION* file_info,
79 // Performs the desired policy action on a query request with an
80 // API that is compatible with the IPC-received parameters.
81 static bool QueryFullAttributesFileAction(
82 EvalResult eval_result,
83 const ClientInfo& client_info,
84 const base::string16 &file,
86 FILE_NETWORK_OPEN_INFORMATION* file_info,
89 // Performs the desired policy action on a set_info request with an
90 // API that is compatible with the IPC-received parameters.
91 static bool SetInformationFileAction(EvalResult eval_result,
92 const ClientInfo& client_info,
93 HANDLE target_file_handle,
97 IO_STATUS_BLOCK* io_block,
101 // Expands the path and check if it's a reparse point. Returns false if
102 // we cannot determine or if there is an unexpected error. In that case
103 // the path cannot be trusted.
104 bool PreProcessName(const base::string16& path, base::string16* new_path);
106 // Corrects global paths to have a correctly escaped NT prefix at the
107 // beginning. If the name has no NT prefix (either normal or escaped)
108 // add the escaped form to the string
109 base::string16 FixNTPrefixForMatch(const base::string16& name);
111 } // namespace sandbox
113 #endif // SANDBOX_SRC_FILESYSTEM_POLICY_H__