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_OPEN_DIRECTORY 3
  27 #define INFO_PAM 4
  28
  29 #ifndef __SLICK__
  30 #define _PASSWD_FILE "/etc/master.passwd"
  31 #else
  32 #define _PASSWD_FILE "/etc/passwd"
  33 #endif
  34
  35 #include <stdio.h>
  36 #include <errno.h>
  37 #include <pwd.h>
  38 #include <libc.h>
  39 #include <ctype.h>
  40 #include <string.h>
  41 #include <pwd.h>
  42 #include "stringops.h"
  43
  44 #ifdef __SLICK__
  45 #define _PASSWORD_LEN 8
  46 #endif
  47
  48 const char* progname = "chkpasswd";
  49
  50 static int literal = 0;
  51
  52 extern int file_check_passwd(char *, char *);
  53 extern int nis_check_passwd(char *, char *);
  54 extern int od_check_passwd(char *, char *);
  55 extern int pam_check_passwd(char *);
  56
  57 void
  58 checkpasswd(char *name, char *old_pw)
  59 {
  60         int isNull;
  61         char *p;
  62
  63         printf("Checking password for %s.\n", name);
  64
  65         p = "";
  66         isNull = 0;
  67         if (old_pw == NULL) isNull = 1;
  68         if ((isNull == 0) && (old_pw[0] == '\0')) isNull = 1;
  69         if (isNull == 0)
  70         {
  71                 p = getpass("Password:");
  72                 sleep(1); // make sure this doesn't go too quickly
  73                 if (strcmp(literal ? p : crypt(p, old_pw), old_pw))
  74                 {
  75                         errno = EACCES;
  76                         fprintf(stderr, "Sorry\n");
  77                         exit(1);
  78                 }
  79         }
  80         return;
  81 }
  82
  83 void
  84 usage()
  85 {
  86         fprintf(stderr, "usage: chkpasswd [-i infosystem] [-l location] [-c] [name]\n");
  87         fprintf(stderr, "  infosystem:\n");
  88         fprintf(stderr, "    file\n");
  89         fprintf(stderr, "    NIS\n");
  90         fprintf(stderr, "    OpenDirectory\n");
  91         fprintf(stderr, "  location (for infosystem):\n");
  92         fprintf(stderr, "    file           location is path to file (default is %s)\n", _PASSWD_FILE);
  93         fprintf(stderr, "    NIS            location is NIS domain name\n");
  94         fprintf(stderr, "    OpenDirectory  location is directory node name\n");
  95         fprintf(stderr, "  -c: supplied password is compared verbatim without first\n");
  96         fprintf(stderr, "      being crypted\n");
  97         exit(1);
  98 }
  99
 100 int
 101 main(int argc, char *argv[])
 102 {
 103         char* user = NULL;
 104         char* locn = NULL;
 105         int infosystem, ch;
 106
 107         infosystem = INFO_PAM;
 108
 109         while ((ch = getopt(argc, argv, "ci:l:")) != -1) {
 110                 switch(ch) {
 111                 case 'i':
 112                         if (!strcasecmp(optarg, "file")) {
 113                                 infosystem = INFO_FILE;
 114                         } else if (!strcasecmp(optarg, "NIS")) {
 115                                 infosystem = INFO_NIS;
 116                         } else if (!strcasecmp(optarg, "YP")) {
 117                                 infosystem = INFO_NIS;
 118                         } else if (!strcasecmp(optarg, "opendirectory")) {
 119                                 infosystem = INFO_OPEN_DIRECTORY;
 120                         } else if (!strcasecmp(optarg, "PAM")) {
 121                                 infosystem = INFO_PAM;
 122                         } else {
 123                                 fprintf(stderr, "%s: Unknown info system \'%s\'.\n",
 124                                         progname, optarg);
 125                                 usage();
 126                         }
 127                         break;
 128                 case 'l':
 129                         locn = optarg;
 130                         break;
 131                 case 'c':
 132                         literal++;
 133                         break;
 134                 case '?':
 135                 default:
 136                         usage();
 137                         break;
 138                 }
 139         }
 140         argc -= optind;
 141         argv += optind;
 142
 143         if (argc > 1) {
 144                 usage();
 145         } else if (argc == 1) {
 146                 user = argv[0];
 147         }
 148
 149         if (user == NULL) {
 150                 struct passwd* pw = getpwuid(getuid());
 151                 if (pw != NULL && pw->pw_name != NULL) {
 152                         user = strdup(pw->pw_name);
 153                 }
 154                 if (user == NULL) {
 155                         fprintf(stderr, "you don't have a login name\n");
 156                         exit(1);
 157                 }
 158         }
 159
 160         switch (infosystem)
 161         {
 162                 case INFO_FILE:
 163                         file_check_passwd(user, locn);
 164                         break;
 165                 case INFO_NIS:
 166                         nis_check_passwd(user, locn);
 167                         break;
 168                 case INFO_OPEN_DIRECTORY:
 169                         od_check_passwd(user, locn);
 170                         break;
 171                 case INFO_PAM:
 172                         pam_check_passwd(user);
 173                         break;
 174         }
 175
 176         exit(0);
 177 }
 178