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 <unistd.h>
  39 #include <stdarg.h>
  40 #include <sys/types.h>
  41 #include <sys/stat.h>
  42 #include <sys/param.h>
  43
  44 #include "pwupd.h"
  45
  46 static char * grpath = _PATH_PWD;
  47
  48 int
  49 setgrdir(const char * dir)
  50 {
  51         if (dir == NULL)
  52                 return -1;
  53         else {
  54                 char * d = malloc(strlen(dir)+1);
  55                 if (d == NULL)
  56                         return -1;
  57                 grpath = strcpy(d, dir);
  58         }
  59         return 0;
  60 }
  61
  62 char *
  63 getgrpath(const char * file)
  64 {
  65         static char pathbuf[MAXPATHLEN];
  66
  67         snprintf(pathbuf, sizeof pathbuf, "%s/%s", grpath, file);
  68         return pathbuf;
  69 }
  70
  71 static int
  72 gr_update(struct group * grp, char const * group)
  73 {
  74         int pfd, tfd;
  75         struct group *gr = NULL;
  76         struct group *old_gr = NULL;
  77
  78         if (grp != NULL)
  79                 gr = gr_dup(grp);
  80
  81         if (group != NULL)
  82                 old_gr = GETGRNAM(group);
  83
  84         if (gr_init(grpath, NULL))
  85                 err(1, "gr_init()");
  86
  87         if ((pfd = gr_lock()) == -1) {
  88                 gr_fini();
  89                 err(1, "gr_lock()");
  90         }
  91         if ((tfd = gr_tmp(-1)) == -1) {
  92                 gr_fini();
  93                 err(1, "gr_tmp()");
  94         }
  95         if (gr_copy(pfd, tfd, gr, old_gr) == -1) {
  96                 gr_fini();
  97                 err(1, "gr_copy()");
  98         }
  99         if (gr_mkdb() == -1) {
 100                 gr_fini();
 101                 err(1, "gr_mkdb()");
 102         }
 103         free(gr);
 104         gr_fini();
 105         return 0;
 106 }
 107
 108
 109 int
 110 addgrent(struct group * grp)
 111 {
 112         return gr_update(grp, NULL);
 113 }
 114
 115 int
 116 chggrent(char const * login, struct group * grp)
 117 {
 118         return gr_update(grp, login);
 119 }
 120
 121 int
 122 delgrent(struct group * grp)
 123 {
 124         char group[MAXLOGNAME];
 125
 126         strlcpy(group, grp->gr_name, MAXLOGNAME);
 127
 128         return gr_update(NULL, group);
 129 }