libc
/* $Id$ */
/* Copyright (c) 2009 Pierre Pronchery <khorben@defora.org> */
/* This file is part of DeforaOS System libc */
/* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
#include "stddef.h"
#include "stdlib.h"
#include "stdio.h"
#include "string.h"
#include "errno.h"
#include "grp.h"
/* private */
/* variables */
static FILE * _fp = NULL;
/* public */
/* functions */
/* endgrent */
void endgrent(void)
{
if(_fp == NULL)
return;
fclose(_fp);
_fp = NULL;
}
/* getgrent */
struct group * getgrent(void)
{
static struct group ret;
static char buf[512];
char * s;
char * t;
if(_fp == NULL && (_fp = fopen("/etc/group", "r")) == NULL)
return NULL;
if(fgets(buf, sizeof(buf), _fp) == NULL)
{
endgrent();
return NULL;
}
s = buf; /* read the group's name */
if((t = strchr(s, ':')) == NULL)
return NULL;
*t = '\0';
ret.gr_name = s;
s = ++t; /* skip the group's password */
if((t = strchr(s, ':')) == NULL)
return NULL;
s = ++t; /* read the group's id */
if((t = strchr(s, ':')) == NULL)
return NULL;
ret.gr_gid = atoi(s);
ret.gr_mem = NULL; /* FIXME implement */
return &ret;
}
/* getgrgid */
struct group * getgrgid(gid_t gid)
{
struct group * grp;
while((grp = getgrent()) != NULL)
if(grp->gr_gid == gid)
break;
endgrent();
return grp;
}
/* getgrnam */
struct group * getgrnam(char const * name)
{
struct group * grp;
while((grp = getgrent()) != NULL)
if(strcmp(grp->gr_name, name) == 0)
break;
endgrent();
return grp;
}
/* setgrent */
void setgrent(void)
{
/* FIXME implement */
}