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/*
* user.cc
* Copyright (C) 1999 by John Heidemann
* $Id: user.cc,v 1.2 1999/09/06 18:16:16 johnh Exp $
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*
*/
#include <unistd.h>
#include <pwd.h>
#include <sys/types.h>
#include <string.h>
#include <map>
#include "user.hh"
struct ltuid {
bool operator()(const uid_t u1, const uid_t u2) const {
return u1 < u2;
};
};
typedef map<const uid_t, const char *, ltuid> uid_to_name_map_t;
static uid_to_name_map_t uid_to_name_map;
const char *
uid_to_name(const uid_t uid)
{
uid_to_name_map_t::iterator hit = uid_to_name_map.find(uid);
if (hit == uid_to_name_map.end()) {
struct passwd *pwe = getpwuid(uid);
const char *name = strdup((pwe == NULL) ? "???" : pwe->pw_name);
uid_to_name_map[uid] = name;
};
return uid_to_name_map[uid];
}
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