| 12 | #endif |
| 13 | |
| 14 | TString GetUsername() { |
| 15 | for (const auto& var : {"LOGNAME", "USER", "LNAME", "USERNAME"}) { |
| 16 | TString val = GetEnv(var); |
| 17 | if (val) { |
| 18 | return val; |
| 19 | } |
| 20 | } |
| 21 | |
| 22 | TTempBuf nameBuf; |
| 23 | for (;;) { |
| 24 | #if defined(_win_) |
| 25 | DWORD len = (DWORD)Min(nameBuf.Size(), size_t(32767)); |
| 26 | if (!GetUserNameA(nameBuf.Data(), &len)) { |
| 27 | DWORD err = GetLastError(); |
| 28 | if ((err == ERROR_INSUFFICIENT_BUFFER) && (nameBuf.Size() <= 32767)) { |
| 29 | nameBuf = TTempBuf((size_t)len); |
| 30 | } else { |
| 31 | ythrow TSystemError(err) << " GetUserName failed"; |
| 32 | } |
| 33 | } else { |
| 34 | return TString(nameBuf.Data(), (size_t)(len - 1)); |
| 35 | } |
| 36 | #elif defined(_bionic_) |
| 37 | const passwd* pwd = getpwuid(geteuid()); |
| 38 | |
| 39 | if (pwd) { |
| 40 | return TString(pwd->pw_name); |
| 41 | } |
| 42 | |
| 43 | ythrow TSystemError() << TStringBuf(" getpwuid failed"); |
| 44 | #else |
| 45 | passwd pwd; |
| 46 | passwd* tmpPwd; |
| 47 | int err = getpwuid_r(geteuid(), &pwd, nameBuf.Data(), nameBuf.Size(), &tmpPwd); |
| 48 | if (err == 0 && tmpPwd) { |
| 49 | return TString(pwd.pw_name); |
| 50 | } else if (err == ERANGE) { |
| 51 | nameBuf = TTempBuf(nameBuf.Size() * 2); |
| 52 | } else { |
| 53 | ythrow TSystemError(err) << " getpwuid_r failed"; |
| 54 | } |
| 55 | #endif |
| 56 | } |
| 57 | } |