unix/UseridFunction.cpp

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/* Copyright (c) 2005-2009 Rexx Language Association. All rights reserved.    */
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/*----------------------------------------------------------------------------*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
 
#ifdef HAVE_PWD_H
# include <pwd.h>
#endif
 
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
 
#include "RexxCore.h"
#include "StringClass.hpp"
#include "SystemInterpreter.hpp"
 
#define ACCOUNT_BUFFER_SIZE  256
 
/*********************************************************************/
/*                                                                   */
/*   Subroutine Name:   SysUserid                                    */
/*                                                                   */
/*   Descriptive Name:  retrieve current userid                      */
/*                                                                   */
/*********************************************************************/
 
RexxString *SystemInterpreter::getUserid()
{
    char account_buffer[ACCOUNT_BUFFER_SIZE];
#if defined( HAVE_GETPWUID )
    struct passwd * pstUsrDat;
#endif
 
    account_buffer[ACCOUNT_BUFFER_SIZE-1] = '\0'; /* Max delimiter            */
#if defined( HAVE_GETPWUID )
    pstUsrDat = getpwuid(geteuid());
    strncpy( account_buffer,  pstUsrDat->pw_name, ACCOUNT_BUFFER_SIZE-1);
#elif defined( HAVE_IDTOUSER )
    strncpy( account_buffer, IDtouser(geteuid()), ACCOUNT_BUFFER_SIZE-1);
#else
    strcpy( account_buffer, "unknown" );
#endif
    return new_string(account_buffer);
}