| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with this |
| * work for additional information regarding copyright ownership. The ASF |
| * licenses this file to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| |
| #include "winutils.h" |
| |
| //---------------------------------------------------------------------------- |
| // Function: Chown |
| // |
| // Description: |
| // The main method for chown command |
| // |
| // Returns: |
| // 0: on success |
| // |
| // Notes: |
| // |
| // |
| int Chown(__in int argc, __in_ecount(argc) wchar_t *argv[]) |
| { |
| LPWSTR pathName = NULL; |
| |
| LPWSTR ownerInfo = NULL; |
| |
| WCHAR const * colonPos = NULL; |
| |
| LPWSTR userName = NULL; |
| size_t userNameLen = 0; |
| |
| LPWSTR groupName = NULL; |
| size_t groupNameLen = 0; |
| |
| DWORD dwRtnCode = 0; |
| |
| int ret = EXIT_FAILURE; |
| |
| if (argc >= 3) |
| { |
| ownerInfo = argv[1]; |
| pathName = argv[2]; |
| } |
| else |
| { |
| fwprintf(stderr, L"Incorrect command line arguments.\n\n"); |
| ChownUsage(argv[0]); |
| return ret; |
| } |
| |
| // Parsing the owner name |
| // |
| if ((colonPos = wcschr(ownerInfo, L':')) != NULL) |
| { |
| if (colonPos - ownerInfo != 0) |
| { |
| // Length includes NULL terminator |
| userNameLen = colonPos - ownerInfo + 1; |
| userName = (LPTSTR)LocalAlloc(LPTR, userNameLen * sizeof(WCHAR)); |
| if (userName == NULL) |
| { |
| ReportErrorCode(L"LocalAlloc", GetLastError()); |
| goto ChownEnd; |
| } |
| if (FAILED(StringCchCopyNW(userName, userNameLen, |
| ownerInfo, userNameLen - 1))) |
| goto ChownEnd; |
| } |
| |
| if (*(colonPos + 1) != 0) |
| { |
| // Length includes NULL terminator |
| groupNameLen = wcslen(ownerInfo) - (colonPos - ownerInfo) + 1; |
| groupName = (LPTSTR)LocalAlloc(LPTR, groupNameLen * sizeof(WCHAR)); |
| if (groupName == NULL) |
| { |
| ReportErrorCode(L"LocalAlloc", GetLastError()); |
| goto ChownEnd; |
| } |
| if (FAILED(StringCchCopyNW(groupName, groupNameLen, |
| colonPos + 1, groupNameLen))) |
| goto ChownEnd; |
| } |
| } |
| else |
| { |
| // Length includes NULL terminator |
| userNameLen = wcslen(ownerInfo) + 1; |
| userName = (LPWSTR)LocalAlloc(LPTR, userNameLen * sizeof(WCHAR)); |
| if (userName == NULL) |
| { |
| ReportErrorCode(L"LocalAlloc", GetLastError()); |
| goto ChownEnd; |
| } |
| if (FAILED(StringCchCopyNW(userName, userNameLen, ownerInfo, userNameLen))) |
| goto ChownEnd; |
| } |
| |
| // Not allow zero length user name or group name in the parsing results. |
| // |
| assert(userName == NULL || wcslen(userName) > 0); |
| assert(groupName == NULL || wcslen(groupName) > 0); |
| |
| // Nothing to change if both names are empty |
| // |
| if ((userName == NULL) && (groupName == NULL)) |
| { |
| ret = EXIT_SUCCESS; |
| goto ChownEnd; |
| } |
| |
| dwRtnCode = ChownImpl(userName, groupName, pathName); |
| if (dwRtnCode) { |
| goto ChownEnd; |
| } |
| |
| ret = EXIT_SUCCESS; |
| |
| ChownEnd: |
| LocalFree(userName); |
| LocalFree(groupName); |
| |
| return ret; |
| } |
| |
| void ChownUsage(LPCWSTR program) |
| { |
| fwprintf(stdout, L"\ |
| Usage: %s [OWNER][:[GROUP]] [FILE]\n\ |
| Change the owner and/or group of the FILE to OWNER and/or GROUP.\n\ |
| \n\ |
| Note:\n\ |
| On Linux, if a colon but no group name follows the user name, the group of\n\ |
| the files is changed to that user\'s login group. Windows has no concept of\n\ |
| a user's login group. So we do not change the group owner in this case.\n", |
| program); |
| } |