1 // Copyright (c) 2009 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 // This file declares helper methods used to schedule files for deletion 6 // on next reboot. 7 8 #ifndef CHROME_INSTALLER_UTIL_DELETE_AFTER_REBOOT_HELPER_H_ 9 #define CHROME_INSTALLER_UTIL_DELETE_AFTER_REBOOT_HELPER_H_ 10 11 #include <string> 12 #include <vector> 13 14 #include <windows.h> 15 16 namespace base { 17 class FilePath; 18 } 19 20 // Used by the unit tests. 21 extern const wchar_t kSessionManagerKey[]; 22 extern const wchar_t kPendingFileRenameOps[]; 23 24 typedef std::pair<std::wstring, std::wstring> PendingMove; 25 26 // Attempts to schedule only the item at path for deletion. 27 bool ScheduleFileSystemEntityForDeletion(const base::FilePath& path); 28 29 // Attempts to recursively schedule the directory for deletion. 30 bool ScheduleDirectoryForDeletion(const base::FilePath& dir_name); 31 32 // Removes all pending moves that are registered for |directory| and all 33 // elements contained in |directory|. 34 bool RemoveFromMovesPendingReboot(const base::FilePath& directory); 35 36 // Retrieves the list of pending renames from the registry and returns a vector 37 // containing pairs of strings that represent the operations. If the list 38 // contains only deletes then every other element will be an empty string 39 // as per http://msdn.microsoft.com/en-us/library/aa365240(VS.85).aspx. 40 HRESULT GetPendingMovesValue(std::vector<PendingMove>* pending_moves); 41 42 // This returns true if |short_form_needle| is contained in |reg_path| where 43 // |short_form_needle| is a file system path that has been shortened by 44 // GetShortPathName and |reg_path| is a path stored in the 45 // PendingFileRenameOperations key. 46 bool MatchPendingDeletePath(const base::FilePath& short_form_needle, 47 const base::FilePath& reg_path); 48 49 // Converts the strings found in |buffer| to a list of PendingMoves that is 50 // returned in |value|. 51 // |buffer| points to a series of pairs of null-terminated wchar_t strings 52 // followed by a terminating null character. 53 // |byte_count| is the length of |buffer| in bytes. 54 // |value| is a pointer to an empty vector of PendingMoves (string pairs). 55 // On success, this vector contains all of the string pairs extracted from 56 // |buffer|. 57 // Returns S_OK on success, E_INVALIDARG if buffer does not meet the above 58 // specification. 59 HRESULT MultiSZBytesToStringArray(const char* buffer, size_t byte_count, 60 std::vector<PendingMove>* value); 61 62 // The inverse of MultiSZBytesToStringArray, this function converts a list 63 // of string pairs into a byte array format suitable for writing to the 64 // kPendingFileRenameOps registry value. It concatenates the strings and 65 // appends an additional terminating null character. 66 void StringArrayToMultiSZBytes(const std::vector<PendingMove>& strings, 67 std::vector<char>* buffer); 68 69 // A helper function for the win32 GetShortPathName that more conveniently 70 // returns a FilePath. Note that if |path| is not present on the file system 71 // then GetShortPathName will return |path| unchanged, unlike the win32 72 // GetShortPathName which will return an error. 73 base::FilePath GetShortPathName(const base::FilePath& path); 74 75 #endif // CHROME_INSTALLER_UTIL_DELETE_AFTER_REBOOT_HELPER_H_ 76
