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
  27 #ifndef lint
  28 static const char rcsid[] =
  29   "$FreeBSD$";
  30 #endif /* not lint */
  31
  32 #include <grp.h>
  33 #include <libutil.h>
  34 #include <err.h>
  35 #include <stdio.h>
  36 #include <stdlib.h>
  37 #include <string.h>
  38 #include <sys/param.h>
  39
  40 #include "pwupd.h"
  41
  42 static char * grpath = _PATH_PWD;
  43
  44 int
  45 setgrdir(const char * dir)
  46 {
  47         if (dir == NULL)
  48                 return -1;
  49         else
  50                 grpath = strdup(dir);
  51         if (grpath == NULL)
  52                 return -1;
  53
  54         return 0;
  55 }
  56
  57 char *
  58 getgrpath(const char * file)
  59 {
  60         static char pathbuf[MAXPATHLEN];
  61
  62         snprintf(pathbuf, sizeof pathbuf, "%s/%s", grpath, file);
  63         return pathbuf;
  64 }
  65
  66 static int
  67 gr_update(struct group * grp, char const * group)
  68 {
  69         int pfd, tfd;
  70         struct group *gr = NULL;
  71         struct group *old_gr = NULL;
  72
  73         if (grp != NULL)
  74                 gr = gr_dup(grp);
  75
  76         if (group != NULL)
  77                 old_gr = GETGRNAM(group);
  78
  79         if (gr_init(grpath, NULL))
  80                 err(1, "gr_init()");
  81
  82         if ((pfd = gr_lock()) == -1) {
  83                 gr_fini();
  84                 err(1, "gr_lock()");
  85         }
  86         if ((tfd = gr_tmp(-1)) == -1) {
  87                 gr_fini();
  88                 err(1, "gr_tmp()");
  89         }
  90         if (gr_copy(pfd, tfd, gr, old_gr) == -1) {
  91                 gr_fini();
  92                 err(1, "gr_copy()");
  93         }
  94         if (gr_mkdb() == -1) {
  95                 gr_fini();
  96                 err(1, "gr_mkdb()");
  97         }
  98         free(gr);
  99         gr_fini();
 100         return 0;
 101 }
 102
 103
 104 int
 105 addgrent(struct group * grp)
 106 {
 107         return gr_update(grp, NULL);
 108 }
 109
 110 int
 111 chggrent(char const * login, struct group * grp)
 112 {
 113         return gr_update(grp, login);
 114 }
 115
 116 int
 117 delgrent(struct group * grp)
 118 {
 119         char group[MAXLOGNAME];
 120
 121         strlcpy(group, grp->gr_name, MAXLOGNAME);
 122
 123         return gr_update(NULL, group);
 124 }