chkpasswd.tproj/passwd.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 #define INFO_FILE 1
  25 #define INFO_NIS 2
  26 #define INFO_DIRECTORYSERVICES 3
  27
  28 #ifndef __SLICK__
  29 #define _PASSWD_FILE "/etc/master.passwd"
  30 #else
  31 #define _PASSWD_FILE "/etc/passwd"
  32 #endif
  33
  34 #include <stdio.h>
  35 #include <errno.h>
  36 #include <pwd.h>
  37 #include <libc.h>
  38 #include <ctype.h>
  39 #include <string.h>
  40 #include <pwd.h>
  41 #include "stringops.h"
  42
  43 #ifdef __SLICK__
  44 #define _PASSWORD_LEN 8
  45 #endif
  46
  47 static int literal = 0;
  48
  49 extern int file_check_passwd(char *, char *);
  50 extern int nis_check_passwd(char *, char *);
  51 extern int ds_check_passwd(char *, char *);
  52
  53 void
  54 checkpasswd(char *name, char *old_pw)
  55 {
  56         int isNull;
  57         char *p;
  58
  59         printf("Checking password for %s.\n", name);
  60
  61         p = "";
  62         isNull = 0;
  63         if (old_pw == NULL) isNull = 1;
  64         if ((isNull == 0) && (old_pw[0] == '\0')) isNull = 1;
  65         if (isNull == 0)
  66         {
  67                 p = getpass("Password:");
  68                 sleep(1); // make sure this doesn't go too quickly
  69                 if (strcmp(literal ? p : crypt(p, old_pw), old_pw))
  70                 {
  71                         errno = EACCES;
  72                         fprintf(stderr, "Sorry\n");
  73                         exit(1);
  74                 }
  75         }
  76         return;
  77 }
  78
  79 void
  80 usage()
  81 {
  82         fprintf(stderr, "usage: chkpasswd [-i infosystem] [-l location] [-c] [name]\n");
  83         fprintf(stderr, "supported infosystems are:\n");
  84         fprintf(stderr, "    file\n");
  85         fprintf(stderr, "    nis\n");
  86         fprintf(stderr, "    opendirectory\n");
  87         fprintf(stderr, "for file, location may be a file name (%s is the default)\n",
  88                 _PASSWD_FILE);
  89         fprintf(stderr, "for nis, location may be a NIS domainname\n");
  90         fprintf(stderr, "for opendirectory, location may be a directory node name\n");
  91         fprintf(stderr, "if -c is specified, the password you supply is compared\n");
  92         fprintf(stderr, "verbatim without first being crypted\n");
  93         exit(1);
  94 }
  95
  96 int
  97 main(int argc, char *argv[])
  98 {
  99         char *user, *locn;
 100         int i, infosystem;
 101         struct passwd *pw;
 102
 103         infosystem = INFO_DIRECTORYSERVICES;
 104         user = NULL;
 105         locn = NULL;
 106
 107         for (i = 1; i < argc; i++)
 108         {
 109                 if (!strcmp(argv[i], "-i"))
 110                 {
 111                         if (++i >= argc)
 112                         {
 113                                 fprintf(stderr, "no argument for -i option\n");
 114                                 usage();
 115                         }
 116
 117                         if (!strcmp(argv[i], "File")) infosystem = INFO_FILE;
 118                         else if (!strcmp(argv[i], "file")) infosystem = INFO_FILE;
 119                         else if (!strcmp(argv[i], "NIS")) infosystem = INFO_NIS;
 120                         else if (!strcmp(argv[i], "nis")) infosystem = INFO_NIS;
 121                         else if (!strcmp(argv[i], "YP")) infosystem = INFO_NIS;
 122                         else if (!strcmp(argv[i], "yp")) infosystem = INFO_NIS;
 123                         else if (!strcasecmp(argv[i], "opendirectory")) infosystem = INFO_DIRECTORYSERVICES;
 124                         else
 125                         {
 126                                 fprintf(stderr, "unknown info system \"%s\"\n", argv[i]);
 127                                 usage();
 128                         }
 129                 }
 130
 131                 else if (!strcmp(argv[i], "-l"))
 132                 {
 133                         if (++i >= argc)
 134                         {
 135                                 fprintf(stderr, "no argument for -l option\n");
 136                                 usage();
 137                         }
 138                         locn = argv[i];
 139                 }
 140
 141                 else if (!strcmp(argv[i], "-c")) literal++;
 142                 else if (user == NULL) user = argv[i];
 143                 else usage();
 144         }
 145
 146         if (user == NULL)
 147         {
 148                 if ((pw = getpwuid(getuid())) == NULL || (user = pw->pw_name) == NULL)
 149                 {
 150                         fprintf(stderr, "you don't have a login name\n");
 151                         exit(1);
 152                 }
 153         }
 154
 155         switch (infosystem)
 156         {
 157                 case INFO_FILE:
 158                         file_check_passwd(user, locn);
 159                         break;
 160                 case INFO_NIS:
 161                         nis_check_passwd(user, locn);
 162                         break;
 163                 case INFO_DIRECTORYSERVICES:
 164                         ds_check_passwd(user, locn);
 165                         break;
 166         }
 167
 168         exit(0);
 169 }
 170