%% options copyright owner = Dirk Krause copyright year = 2015-xxxx license = bsd %% header /** @file Retrieve host name in wchar_t characters. CRT on Windows: Not used. */ #ifndef DK4CONF_H_INCLUDED #include "dk4conf.h" #endif #ifndef DK4TYPES_H_INCLUDED #include "dk4types.h" #endif #ifndef DK4ERROR_H_INCLUDED #include "dk4error.h" #endif #ifdef __cplusplus extern "C" { #endif /** Retrieve host name (short host name without any domain). @param buffer Result buffer. @param sz Result buffer size (number of wchar_t). @param erp Error report, may be NULL. @return 1 on success, 0 on error. Error codes: - DK4_E_INVALID_ARGUMENTS
if buffer is NULL or sz is 0 or sz is too large, - DK4_E_NOT_FOUND
if the system function to retrieve the host name failed, - DK4_E_BUFFER_TOO_SMALL
if the result buffer is too small. */ int dk4hostname_wc(wchar_t *buffer, size_t sz, dk4_er_t *erp); #ifdef __cplusplus } #endif %% module #include "dk4hnamew.h" #if DK4_ON_WINDOWS #ifndef WINDOWS_H_INCLUDED #include #define WINDOWS_H_INCLUDED 1 #endif #endif #if DK4_HAVE_UNISTD_H #ifndef UNISTD_H_INCLUDED #include #define UNISTD_H_INCLUDED 1 #endif #endif int dk4hostname_wc(wchar_t *buffer, size_t sz, dk4_er_t *erp) { #if DK4_ON_WINDOWS DWORD s; #endif int back = 0; if ((NULL != buffer) && (0 < sz)) { #if DK4_ON_WINDOWS if ((dk4_um_t)sz <= (dk4_um_t)0xFFFFFFFFUL) { s = (DWORD)sz; if (GetComputerNameExW(ComputerNameNetBIOS, buffer, &s)) { if ((size_t)s < sz) { buffer[(size_t)s] = L'\0'; back = 1; } else { dk4error_set_simple_error_code(erp, DK4_E_BUFFER_TOO_SMALL); } } else { dk4error_set_simple_error_code(erp, DK4_E_NOT_FOUND); } } else { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); } #else dk4error_set_simple_error_code(erp, DK4_E_NOT_SUPPORTED); #endif } else { dk4error_set_simple_error_code(erp, DK4_E_INVALID_ARGUMENTS); } return back; }