| /* |
| * 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 "UserInfo.h" |
| |
| #include <pwd.h> |
| #include <sys/types.h> |
| #include <unistd.h> |
| |
| #include <vector> |
| |
| #include "Exception.h" |
| #include "ExceptionInternal.h" |
| |
| namespace Yarn { |
| namespace Internal { |
| |
| UserInfo UserInfo::LocalUser() { |
| UserInfo retval; |
| uid_t uid, euid; |
| int bufsize; |
| struct passwd pwd, epwd, *result = NULL; |
| euid = geteuid(); |
| uid = getuid(); |
| |
| if ((bufsize = sysconf(_SC_GETPW_R_SIZE_MAX)) == -1) { |
| THROW(InvalidParameter, |
| "Invalid input: \"sysconf\" function failed to get the configure with key \"_SC_GETPW_R_SIZE_MAX\"."); |
| } |
| |
| std::vector<char> buffer(bufsize); |
| |
| if (getpwuid_r(euid, &epwd, &buffer[0], bufsize, &result) != 0 || !result) { |
| THROW(InvalidParameter, |
| "Invalid input: effective user name cannot be found with UID %u.", |
| euid); |
| } |
| |
| retval.setEffectiveUser(epwd.pw_name); |
| |
| if (getpwuid_r(uid, &pwd, &buffer[0], bufsize, &result) != 0 || !result) { |
| THROW(InvalidParameter, |
| "Invalid input: real user name cannot be found with UID %u.", |
| uid); |
| } |
| |
| retval.setRealUser(pwd.pw_name); |
| return retval; |
| } |
| |
| size_t UserInfo::hash_value() const { |
| size_t values[] = { StringHasher(realUser), effectiveUser.hash_value() }; |
| return CombineHasher(values, sizeof(values) / sizeof(values[0])); |
| } |
| |
| } |
| } |