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comparison: security/sandbox/win/src/filesystem_policy.h
security/sandbox/win/src/filesystem_policy.h
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| 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. | |
| 4 | |
| 5 #ifndef SANDBOX_SRC_FILESYSTEM_POLICY_H__ | |
| 6 #define SANDBOX_SRC_FILESYSTEM_POLICY_H__ | |
| 7 | |
| 8 #include <string> | |
| 9 | |
| 10 #include "base/basictypes.h" | |
| 11 #include "sandbox/win/src/crosscall_server.h" | |
| 12 #include "sandbox/win/src/nt_internals.h" | |
| 13 #include "sandbox/win/src/policy_low_level.h" | |
| 14 #include "sandbox/win/src/sandbox_policy.h" | |
| 15 | |
| 16 namespace sandbox { | |
| 17 | |
| 18 enum EvalResult; | |
| 19 | |
| 20 // This class centralizes most of the knowledge related to file system policy | |
| 21 class FileSystemPolicy { | |
| 22 public: | |
| 23 // Creates the required low-level policy rules to evaluate a high-level | |
| 24 // policy rule for File IO, in particular open or create actions. | |
| 25 // 'name' is the file or directory name. | |
| 26 // 'semantics' is the desired semantics for the open or create. | |
| 27 // 'policy' is the policy generator to which the rules are going to be added. | |
| 28 static bool GenerateRules(const wchar_t* name, | |
| 29 TargetPolicy::Semantics semantics, | |
| 30 LowLevelPolicy* policy); | |
| 31 | |
| 32 // Add basic file system rules. | |
| 33 static bool SetInitialRules(LowLevelPolicy* policy); | |
| 34 | |
| 35 // Performs the desired policy action on a create request with an | |
| 36 // API that is compatible with the IPC-received parameters. | |
| 37 // 'client_info' : the target process that is making the request. | |
| 38 // 'eval_result' : The desired policy action to accomplish. | |
| 39 // 'file' : The target file or directory. | |
| 40 static bool CreateFileAction(EvalResult eval_result, | |
| 41 const ClientInfo& client_info, | |
| 42 const std::wstring &file, | |
| 43 uint32 attributes, | |
| 44 uint32 desired_access, | |
| 45 uint32 file_attributes, | |
| 46 uint32 share_access, | |
| 47 uint32 create_disposition, | |
| 48 uint32 create_options, | |
| 49 HANDLE* handle, | |
| 50 NTSTATUS* nt_status, | |
| 51 ULONG_PTR* io_information); | |
| 52 | |
| 53 // Performs the desired policy action on an open request with an | |
| 54 // API that is compatible with the IPC-received parameters. | |
| 55 // 'client_info' : the target process that is making the request. | |
| 56 // 'eval_result' : The desired policy action to accomplish. | |
| 57 // 'file' : The target file or directory. | |
| 58 static bool OpenFileAction(EvalResult eval_result, | |
| 59 const ClientInfo& client_info, | |
| 60 const std::wstring &file, | |
| 61 uint32 attributes, | |
| 62 uint32 desired_access, | |
| 63 uint32 share_access, | |
| 64 uint32 open_options, | |
| 65 HANDLE* handle, | |
| 66 NTSTATUS* nt_status, | |
| 67 ULONG_PTR* io_information); | |
| 68 | |
| 69 // Performs the desired policy action on a query request with an | |
| 70 // API that is compatible with the IPC-received parameters. | |
| 71 static bool QueryAttributesFileAction(EvalResult eval_result, | |
| 72 const ClientInfo& client_info, | |
| 73 const std::wstring &file, | |
| 74 uint32 attributes, | |
| 75 FILE_BASIC_INFORMATION* file_info, | |
| 76 NTSTATUS* nt_status); | |
| 77 | |
| 78 // Performs the desired policy action on a query request with an | |
| 79 // API that is compatible with the IPC-received parameters. | |
| 80 static bool QueryFullAttributesFileAction( | |
| 81 EvalResult eval_result, | |
| 82 const ClientInfo& client_info, | |
| 83 const std::wstring &file, | |
| 84 uint32 attributes, | |
| 85 FILE_NETWORK_OPEN_INFORMATION* file_info, | |
| 86 NTSTATUS* nt_status); | |
| 87 | |
| 88 // Performs the desired policy action on a set_info request with an | |
| 89 // API that is compatible with the IPC-received parameters. | |
| 90 static bool SetInformationFileAction(EvalResult eval_result, | |
| 91 const ClientInfo& client_info, | |
| 92 HANDLE target_file_handle, | |
| 93 void* file_info, | |
| 94 uint32 length, | |
| 95 uint32 info_class, | |
| 96 IO_STATUS_BLOCK* io_block, | |
| 97 NTSTATUS* nt_status); | |
| 98 }; | |
| 99 | |
| 100 // Expands the path and check if it's a reparse point. Returns false if | |
| 101 // we cannot determine or if there is an unexpected error. In that case | |
| 102 // the path cannot be trusted. | |
| 103 bool PreProcessName(const std::wstring& path, std::wstring* new_path); | |
| 104 | |
| 105 } // namespace sandbox | |
| 106 | |
| 107 #endif // SANDBOX_SRC_FILESYSTEM_POLICY_H__ |
