pw/grupd.c

   1 /*-
   2  * Copyright (C) 1996
   3  *      David L. Nugent.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  *      $Id: grupd.c,v 1.1.1.1 1996/12/09 14:05:35 joerg Exp $
  27  */
  28
  29 #include <stdio.h>
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <unistd.h>
  33 #include <stdarg.h>
  34 #include <errno.h>
  35 #include <sys/types.h>
  36 #include <sys/stat.h>
  37
  38 #include "pwupd.h"
  39
  40 int
  41 fmtgrentry(char *buf, struct group * grp, int type)
  42 {
  43         int             i, l;
  44
  45         if (type == PWF_STANDARD)
  46                 l = sprintf(buf, "%s:*:%ld:", grp->gr_name, (long) grp->gr_gid);
  47         else
  48                 l = sprintf(buf, "%s:%s:%ld:", grp->gr_name, grp->gr_passwd, (long) grp->gr_gid);
  49
  50         /*
  51          * Now, list members
  52          */
  53         for (i = 0; i < 200 && grp->gr_mem[i]; i++)
  54                 l += sprintf(buf + l, "%s%s", i ? "," : "", grp->gr_mem[i]);
  55         buf[l++] = '\n';
  56         buf[l] = '\0';
  57         return l;
  58 }
  59
  60
  61 int
  62 fmtgrent(char *buf, struct group * grp)
  63 {
  64         return fmtgrentry(buf, grp, PWF_STANDARD);
  65 }
  66
  67
  68 static int
  69 gr_update(struct group * grp, char const * group, int mode)
  70 {
  71         int             l;
  72         char            pfx[32];
  73         char            grbuf[MAXPWLINE];
  74
  75         endgrent();
  76         l = sprintf(pfx, "%s:", group);
  77
  78         /*
  79          * Update the group file
  80          */
  81         if (grp == NULL)
  82                 *grbuf = '\0';
  83         else
  84                 fmtgrentry(grbuf, grp, PWF_PASSWD);
  85         return fileupdate(_PATH_GROUP, 0644, grbuf, pfx, l, mode);
  86 }
  87
  88
  89 int
  90 addgrent(struct group * grp)
  91 {
  92         return gr_update(grp, grp->gr_name, UPD_CREATE);
  93 }
  94
  95 int
  96 chggrent(char const * login, struct group * grp)
  97 {
  98         return gr_update(grp, login, UPD_REPLACE);
  99 }
 100
 101 int
 102 delgrent(struct group * grp)
 103 {
 104         return gr_update(NULL, grp->gr_name, UPD_DELETE);
 105 }