diff options
Diffstat (limited to 'security/sandbox/chromium/sandbox/win/src/filesystem_policy.h')
-rw-r--r-- | security/sandbox/chromium/sandbox/win/src/filesystem_policy.h | 112 |
1 files changed, 112 insertions, 0 deletions
diff --git a/security/sandbox/chromium/sandbox/win/src/filesystem_policy.h b/security/sandbox/chromium/sandbox/win/src/filesystem_policy.h new file mode 100644 index 0000000000..81dd1d0d1d --- /dev/null +++ b/security/sandbox/chromium/sandbox/win/src/filesystem_policy.h @@ -0,0 +1,112 @@ +// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#ifndef SANDBOX_SRC_FILESYSTEM_POLICY_H__ +#define SANDBOX_SRC_FILESYSTEM_POLICY_H__ + +#include <stdint.h> + +#include <string> + +#include "sandbox/win/src/crosscall_server.h" +#include "sandbox/win/src/nt_internals.h" +#include "sandbox/win/src/policy_low_level.h" +#include "sandbox/win/src/sandbox_policy.h" + +namespace sandbox { + +enum IsBroker { BROKER_FALSE, BROKER_TRUE }; + +// This class centralizes most of the knowledge related to file system policy +class FileSystemPolicy { + public: + // Creates the required low-level policy rules to evaluate a high-level + // policy rule for File IO, in particular open or create actions. + // 'name' is the file or directory name. + // 'semantics' is the desired semantics for the open or create. + // 'policy' is the policy generator to which the rules are going to be added. + static bool GenerateRules(const wchar_t* name, + TargetPolicy::Semantics semantics, + LowLevelPolicy* policy); + + // Add basic file system rules. + static bool SetInitialRules(LowLevelPolicy* policy); + + // Performs the desired policy action on a create request with an + // API that is compatible with the IPC-received parameters. + // 'client_info' : the target process that is making the request. + // 'eval_result' : The desired policy action to accomplish. + // 'file' : The target file or directory. + static bool CreateFileAction(EvalResult eval_result, + const ClientInfo& client_info, + const std::wstring& file, + uint32_t attributes, + uint32_t desired_access, + uint32_t file_attributes, + uint32_t share_access, + uint32_t create_disposition, + uint32_t create_options, + HANDLE* handle, + NTSTATUS* nt_status, + ULONG_PTR* io_information); + + // Performs the desired policy action on an open request with an + // API that is compatible with the IPC-received parameters. + // 'client_info' : the target process that is making the request. + // 'eval_result' : The desired policy action to accomplish. + // 'file' : The target file or directory. + static bool OpenFileAction(EvalResult eval_result, + const ClientInfo& client_info, + const std::wstring& file, + uint32_t attributes, + uint32_t desired_access, + uint32_t share_access, + uint32_t open_options, + HANDLE* handle, + NTSTATUS* nt_status, + ULONG_PTR* io_information); + + // Performs the desired policy action on a query request with an + // API that is compatible with the IPC-received parameters. + static bool QueryAttributesFileAction(EvalResult eval_result, + const ClientInfo& client_info, + const std::wstring& file, + uint32_t attributes, + FILE_BASIC_INFORMATION* file_info, + NTSTATUS* nt_status); + + // Performs the desired policy action on a query request with an + // API that is compatible with the IPC-received parameters. + static bool QueryFullAttributesFileAction( + EvalResult eval_result, + const ClientInfo& client_info, + const std::wstring& file, + uint32_t attributes, + FILE_NETWORK_OPEN_INFORMATION* file_info, + NTSTATUS* nt_status); + + // Performs the desired policy action on a set_info request with an + // API that is compatible with the IPC-received parameters. + static bool SetInformationFileAction(EvalResult eval_result, + const ClientInfo& client_info, + HANDLE target_file_handle, + void* file_info, + uint32_t length, + uint32_t info_class, + IO_STATUS_BLOCK* io_block, + NTSTATUS* nt_status); +}; + +// Expands the path and check if it's a reparse point. Returns false if the path +// cannot be trusted. +bool PreProcessName(std::wstring* path); + +// Corrects global paths to have a correctly escaped NT prefix at the +// beginning. If the name has no NT prefix (either normal or escaped) +// add the escaped form to the string +std::wstring FixNTPrefixForMatch(const std::wstring& name); + +} // namespace sandbox + +#endif // SANDBOX_SRC_FILESYSTEM_POLICY_H__ |