git.sur5r.net Git - openldap/blob - servers/slapd/slappasswd.c

   1 /* $OpenLDAP$ */
   2 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   3  *
   4  * Copyright 1998-2006 The OpenLDAP Foundation.
   5  * Portions Copyright 1998-2003 Kurt D. Zeilenga.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* ACKNOWLEDGEMENTS:
  17  * This work was initially developed by Kurt Zeilenga for inclusion
  18  * in OpenLDAP Software.
  19  */
  20
  21 #include "portable.h"
  22
  23 #include <stdio.h>
  24
  25 #include <ac/stdlib.h>
  26
  27 #include <ac/ctype.h>
  28 #include <ac/signal.h>
  29 #include <ac/socket.h>
  30 #include <ac/string.h>
  31 #include <ac/time.h>
  32 #include <ac/unistd.h>
  33
  34 #include <ldap.h>
  35 #include <lber_pvt.h>
  36 #include <lutil.h>
  37 #include <lutil_sha1.h>
  38
  39 #include "ldap_defaults.h"
  40
  41 static int      verbose = 0;
  42
  43 static void
  44 usage(const char *s)
  45 {
  46         fprintf(stderr,
  47                 "Usage: %s [options]\n"
  48                 "  -c format\tcrypt(3) salt format\n"
  49                 "  -g\t\tgenerate random password\n"
  50                 "  -h hash\tpassword scheme\n"
  51                 "  -s secret\tnew password\n"
  52                 "  -u\t\tgenerate RFC2307 values (default)\n"
  53                 "  -v\t\tincrease verbosity\n"
  54                 "  -T file\tread file for new password\n"
  55                 , s );
  56
  57         exit( EXIT_FAILURE );
  58 }
  59
  60 int
  61 slappasswd( int argc, char *argv[] )
  62 {
  63 #ifdef LUTIL_SHA1_BYTES
  64         char    *default_scheme = "{SSHA}";
  65 #else
  66         char    *default_scheme = "{SMD5}";
  67 #endif
  68         char    *scheme = default_scheme;
  69
  70         char    *newpw = NULL;
  71         char    *pwfile = NULL;
  72         const char *text;
  73         const char *progname = "slappasswd";
  74
  75         int             i;
  76         struct berval passwd = BER_BVNULL;
  77         struct berval hash;
  78
  79         while( (i = getopt( argc, argv,
  80                 "c:d:gh:s:T:vu" )) != EOF )
  81         {
  82                 switch (i) {
  83                 case 'c':       /* crypt salt format */
  84                         scheme = "{CRYPT}";
  85                         lutil_salt_format( optarg );
  86                         break;
  87
  88                 case 'g':       /* new password (generate) */
  89                         if ( pwfile != NULL ) {
  90                                 fprintf( stderr, "Option -g incompatible with -T\n" );
  91                                 return EXIT_FAILURE;
  92
  93                         } else if ( newpw != NULL ) {
  94                                 fprintf( stderr, "New password already provided\n" );
  95                                 return EXIT_FAILURE;
  96
  97                         } else if ( lutil_passwd_generate( &passwd, 8 )) {
  98                                 fprintf( stderr, "Password generation failed\n" );
  99                                 return EXIT_FAILURE;
 100                         }
 101                         break;
 102
 103                 case 'h':       /* scheme */
 104                         if ( scheme != default_scheme ) {
 105                                 fprintf( stderr, "Scheme already provided\n" );
 106                                 return EXIT_FAILURE;
 107
 108                         } else {
 109                                 scheme = strdup( optarg );
 110                         }
 111                         break;
 112
 113                 case 's':       /* new password (secret) */
 114                         if ( pwfile != NULL ) {
 115                                 fprintf( stderr, "Option -s incompatible with -T\n" );
 116                                 return EXIT_FAILURE;
 117
 118                         } else if ( newpw != NULL ) {
 119                                 fprintf( stderr, "New password already provided\n" );
 120                                 return EXIT_FAILURE;
 121
 122                         } else {
 123                                 char* p;
 124                                 newpw = strdup( optarg );
 125
 126                                 for( p = optarg; *p != '\0'; p++ ) {
 127                                         *p = '\0';
 128                                 }
 129                         }
 130                         break;
 131
 132                 case 'T':       /* password file */
 133                         if ( pwfile != NULL ) {
 134                                 fprintf( stderr, "Password file already provided\n" );
 135                                 return EXIT_FAILURE;
 136
 137                         } else if ( newpw != NULL ) {
 138                                 fprintf( stderr, "Option -T incompatible with -s/-g\n" );
 139                                 return EXIT_FAILURE;
 140
 141                         }
 142                         pwfile = optarg;
 143                         break;
 144
 145                 case 'u':       /* RFC2307 userPassword */
 146                         break;
 147
 148                 case 'v':       /* verbose */
 149                         verbose++;
 150                         break;
 151
 152                 default:
 153                         usage ( progname );
 154                 }
 155         }
 156
 157         if( argc - optind != 0 ) {
 158                 usage( progname );
 159         }
 160
 161         if( pwfile != NULL ) {
 162                 if( lutil_get_filed_password( pwfile, &passwd )) {
 163                         return EXIT_FAILURE;
 164                 }
 165         } else if ( BER_BVISEMPTY( &passwd )) {
 166                 if( newpw == NULL ) {
 167                         /* prompt for new password */
 168                         char *cknewpw;
 169                         newpw = strdup(getpassphrase("New password: "));
 170                         cknewpw = getpassphrase("Re-enter new password: ");
 171
 172                         if( strcmp( newpw, cknewpw )) {
 173                                 fprintf( stderr, "Password values do not match\n" );
 174                                 return EXIT_FAILURE;
 175                         }
 176                 }
 177
 178                 passwd.bv_val = newpw;
 179                 passwd.bv_len = strlen(passwd.bv_val);
 180         } else {
 181                 /* Omit trailing newline so it may be directed to a pwfile */
 182                 printf( "%s", passwd.bv_val );
 183                 return EXIT_SUCCESS;
 184         }
 185
 186         lutil_passwd_hash( &passwd, scheme, &hash, &text );
 187         if( hash.bv_val == NULL ) {
 188                 fprintf( stderr,
 189                         "Password generation failed for scheme %s: %s\n",
 190                         scheme, text ? text : "" );
 191                 return EXIT_FAILURE;
 192         }
 193
 194         if( lutil_passwd( &hash, &passwd, NULL, &text ) ) {
 195                 fprintf( stderr, "Password verification failed. %s\n",
 196                         text ? text : "" );
 197                 return EXIT_FAILURE;
 198         }
 199
 200         printf( "%s\n" , hash.bv_val );
 201         return EXIT_SUCCESS;
 202 }