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/*-
* Copyright (C) 1996
* David L. Nugent. 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 DAVID L. NUGENT 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 DAVID L. NUGENT 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.
*
* $Id$
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <stdarg.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "pwupd.h"
int
fmtgrentry(char **buf, int * buflen, struct group * grp, int type)
{
int i, l;
/*
* Since a group line is of arbitrary length,
* we need to calculate up-front just how long
* it will need to be...
*/
/* groupname : password : gid : */
l = strlen(grp->gr_name) + 1 + strlen(grp->gr_passwd) + 1 + 5 + 1;
/* group members + comma separator */
for (i = 0; grp->gr_mem[i] != NULL; i++) {
l += strlen(grp->gr_mem[i]) + 1;
}
l += 2; /* For newline & NUL */
if (extendline(buf, buflen, l) == -1)
l = -1;
else{
/*
* Now we can safely format
*/
if (type == PWF_STANDARD)
l = sprintf(*buf, "%s:*:%ld:", grp->gr_name, (long) grp->gr_gid);
else
l = sprintf(*buf, "%s:%s:%ld:", grp->gr_name, grp->gr_passwd, (long) grp->gr_gid);
/*
* List members
*/
for (i = 0; grp->gr_mem[i] != NULL; i++) {
l += sprintf(*buf + l, "%s%s", i ? "," : "", grp->gr_mem[i]);
}
(*buf)[l++] = '\n';
(*buf)[l] = '\0';
}
return l;
}
int
fmtgrent(char **buf, int * buflen, struct group * grp)
{
return fmtgrentry(buf, buflen, grp, PWF_STANDARD);
}
static int
gr_update(struct group * grp, char const * group, int mode)
{
int l;
char pfx[64];
int grbuflen = 0;
char *grbuf = NULL;
endgrent();
l = snprintf(pfx, sizeof pfx, "%s:", group);
/*
* Update the group file
*/
if (grp != NULL && fmtgrentry(&grbuf, &grbuflen, grp, PWF_PASSWD) == -1)
l = -1;
else
l = fileupdate(_PATH_GROUP, 0644, grbuf, pfx, l, mode);
if (grbuf != NULL)
free(grbuf);
return l;
}
int
addgrent(struct group * grp)
{
return gr_update(grp, grp->gr_name, UPD_CREATE);
}
int
chggrent(char const * login, struct group * grp)
{
return gr_update(grp, login, UPD_REPLACE);
}
int
delgrent(struct group * grp)
{
return gr_update(NULL, grp->gr_name, UPD_DELETE);
}
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