git.sur5r.net Git - openldap/blob - clients/tools/ldappasswd.c

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
   4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   5  */
   6
   7 #include "portable.h"
   8
   9 #include <stdio.h>
  10
  11 #include <ac/stdlib.h>
  12
  13 #include <ac/ctype.h>
  14 #include <ac/signal.h>
  15 #include <ac/socket.h>
  16 #include <ac/string.h>
  17 #include <ac/time.h>
  18 #include <ac/unistd.h>
  19
  20 #include <ldap.h>
  21
  22 #include "ldap_defaults.h"
  23
  24 static int      verbose = 0;
  25
  26 static void
  27 usage(const char *s)
  28 {
  29         fprintf(stderr,
  30 "Change the password of an LDAP entry\n\n"
  31 "usage: %s [options] dn\n"
  32 "       dn: the DN of the entry whose password must be changed\n"
  33 "options:\n"
  34 "       -a secret\told password\n"
  35 "       -A\t\tprompt for old password\n"
  36 "       -d level\tdebugging level\n"
  37 "       -D binddn\tbind DN\n"
  38 "       -E\t\trequest SASL privacy (-EE to make it critical)\n"
  39 "       -h host\t\tLDAP server (default: localhost)\n"
  40 "       -I\t\trequest SASL integrity checking (-II to make it\n"
  41 "               \tcritical)\n"
  42 "       -n\t\tmake no modifications\n"
  43 "       -p port\t\tport on LDAP server\n"
  44 "       -S\t\tprompt for new password\n"
  45 "       -s secret\tnew password\n"
  46 "       -U user\t\tSASL authentication identity (username)\n"
  47 "       -v\t\tverbose mode\n"
  48 "       -w passwd\tbind password (for simple authentication)\n"
  49 "       -W\t\tprompt for bind password\n"
  50 "       -X id\t\tSASL authorization identity (\"dn:<dn>\" or \"u:<user>\")\n"
  51 "       -Y mech\t\tSASL mechanism\n"
  52 "       -Z\t\trequest the use of TLS (-ZZ to make it critical)\n"
  53                 , s );
  54
  55         exit( EXIT_FAILURE );
  56 }
  57
  58 int
  59 main( int argc, char *argv[] )
  60 {
  61         int rc;
  62         char    *ldaphost = NULL;
  63
  64         char    *dn = NULL;
  65         char    *binddn = NULL;
  66
  67         char    *bindpw = NULL;
  68         char    *newpw = NULL;
  69         char    *oldpw = NULL;
  70
  71         int             want_bindpw = 0;
  72         int             want_newpw = 0;
  73         int             want_oldpw = 0;
  74
  75         int             noupdates = 0;
  76         int             i;
  77         int             ldapport = 0;
  78         int             debug = 0;
  79         int             version = -1;
  80         int             authmethod = LDAP_AUTH_SIMPLE;
  81 #ifdef HAVE_CYRUS_SASL
  82         char            *sasl_authc_id = NULL;
  83         char            *sasl_authz_id = NULL;
  84         char            *sasl_mech = NULL;
  85         int             sasl_integrity = 0;
  86         int             sasl_privacy = 0;
  87 #endif
  88         int             use_tls = 0;
  89         LDAP           *ld;
  90         struct berval *bv = NULL;
  91
  92         char    *retoid;
  93         struct berval *retdata;
  94
  95         if (argc == 1)
  96                 usage (argv[0]);
  97
  98         while( (i = getopt( argc, argv,
  99                 "Aa:D:d:EIh:np:Ss:U:vWw:X:Y:Z" )) != EOF )
 100         {
 101                 switch (i) {
 102                 case 'A':       /* prompt for oldr password */
 103                         want_oldpw++;
 104                         break;
 105                 case 'a':       /* old password (secret) */
 106                         oldpw = strdup (optarg);
 107
 108                         {
 109                                 char* p;
 110
 111                                 for( p = optarg; *p == '\0'; p++ ) {
 112                                         *p = '*';
 113                                 }
 114                         }
 115                         break;
 116                 case 'D':       /* bind distinguished name */
 117                         binddn = strdup (optarg);
 118                         break;
 119
 120                 case 'd':       /* debugging option */
 121                         debug |= atoi (optarg);
 122                         break;
 123
 124                 case 'h':       /* ldap host */
 125                         ldaphost = strdup (optarg);
 126                         break;
 127
 128                 case 'n':       /* don't update entry(s) */
 129                         noupdates++;
 130                         break;
 131
 132                 case 'p':       /* ldap port */
 133                         ldapport = strtol( optarg, NULL, 10 );
 134                         break;
 135
 136                 case 'S':       /* prompt for user password */
 137                         want_newpw++;
 138                         break;
 139
 140                 case 's':       /* new password (secret) */
 141                         newpw = strdup (optarg);
 142
 143                         {
 144                                 char* p;
 145
 146                                 for( p = optarg; *p == '\0'; p++ ) {
 147                                         *p = '*';
 148                                 }
 149                         }
 150                         break;
 151
 152                 case 'v':       /* verbose */
 153                         verbose++;
 154                         break;
 155
 156                 case 'W':       /* prompt for bind password */
 157                         want_bindpw++;
 158                         break;
 159
 160                 case 'w':       /* bind password */
 161                         bindpw = strdup (optarg);
 162
 163                         {
 164                                 char* p;
 165
 166                                 for( p = optarg; *p == '\0'; p++ ) {
 167                                         *p = '*';
 168                                 }
 169                         }
 170                         break;
 171
 172                 case 'I':
 173 #ifdef HAVE_CYRUS_SASL
 174                         sasl_integrity++;
 175                         authmethod = LDAP_AUTH_SASL;
 176 #else
 177                         fprintf( stderr, "%s was not compiled with SASL "
 178                                 "support\n", argv[0] );
 179                         return( EXIT_FAILURE );
 180 #endif
 181                         break;
 182                 case 'E':
 183 #ifdef HAVE_CYRUS_SASL
 184                         sasl_privacy++;
 185                         authmethod = LDAP_AUTH_SASL;
 186 #else
 187                         fprintf( stderr, "%s was not compiled with SASL "
 188                                 "support\n", argv[0] );
 189                         return( EXIT_FAILURE );
 190 #endif
 191                         break;
 192                 case 'Y':
 193 #ifdef HAVE_CYRUS_SASL
 194                         if ( strcasecmp( optarg, "any" ) &&
 195                                         strcmp( optarg, "*" ) ) {
 196                                 sasl_mech = strdup( optarg );
 197                         }
 198                         authmethod = LDAP_AUTH_SASL;
 199 #else
 200                         fprintf( stderr, "%s was not compiled with SASL "
 201                                 "support\n", argv[0] );
 202                         return( EXIT_FAILURE );
 203 #endif
 204                         break;
 205                 case 'U':
 206 #ifdef HAVE_CYRUS_SASL
 207                         sasl_authc_id = strdup( optarg );
 208                         authmethod = LDAP_AUTH_SASL;
 209 #else
 210                         fprintf( stderr, "%s was not compiled with SASL "
 211                                 "support\n", argv[0] );
 212                         return( EXIT_FAILURE );
 213 #endif
 214                         break;
 215                 case 'X':
 216 #ifdef HAVE_CYRUS_SASL
 217                         sasl_authz_id = strdup( optarg );
 218                         authmethod = LDAP_AUTH_SASL;
 219 #else
 220                         fprintf( stderr, "%s was not compiled with SASL "
 221                                 "support\n", argv[0] );
 222                         return( EXIT_FAILURE );
 223 #endif
 224                         break;
 225                 case 'Z':
 226 #ifdef HAVE_TLS
 227                         use_tls++;
 228 #else
 229                         fprintf( stderr, "%s was not compiled with TLS "
 230                                 "support\n", argv[0] );
 231                         return( EXIT_FAILURE );
 232 #endif
 233                         break;
 234
 235                 default:
 236                         usage (argv[0]);
 237                 }
 238         }
 239
 240         if( argc - optind != 1 ) {
 241                 usage( argv[0] );
 242         }
 243
 244         dn = strdup( argv[optind] );
 245
 246         if( want_oldpw && oldpw == NULL ) {
 247                 /* prompt for old password */
 248                 char *ckoldpw;
 249                 newpw = strdup(getpass("Old password: "));
 250                 ckoldpw = getpass("Re-enter old password: ");
 251
 252                 if( strncmp( oldpw, ckoldpw, strlen(oldpw) )) {
 253                         fprintf( stderr, "passwords do not match\n" );
 254                         return EXIT_FAILURE;
 255                 }
 256         }
 257
 258         if( want_newpw && newpw == NULL ) {
 259                 /* prompt for new password */
 260                 char *cknewpw;
 261                 newpw = strdup(getpass("New password: "));
 262                 cknewpw = getpass("Re-enter new password: ");
 263
 264                 if( strncmp( newpw, cknewpw, strlen(newpw) )) {
 265                         fprintf( stderr, "passwords do not match\n" );
 266                         return EXIT_FAILURE;
 267                 }
 268         }
 269
 270         if( binddn == NULL && dn != NULL ) {
 271                 binddn = dn;
 272                 dn = NULL;
 273
 274                 if( bindpw == NULL ) bindpw = oldpw;
 275         }
 276
 277         if (want_bindpw && bindpw == NULL ) {
 278                 /* handle bind password */
 279                 fprintf( stderr, "Bind DN: %s\n", binddn );
 280                 bindpw = strdup( getpass("Enter bind password: "));
 281         }
 282
 283         if ( debug ) {
 284                 if( ber_set_option( NULL, LBER_OPT_DEBUG_LEVEL, &debug ) != LBER_OPT_SUCCESS ) {
 285                         fprintf( stderr, "Could not set LBER_OPT_DEBUG_LEVEL %d\n", debug );
 286                 }
 287                 if( ldap_set_option( NULL, LDAP_OPT_DEBUG_LEVEL, &debug ) != LDAP_OPT_SUCCESS ) {
 288                         fprintf( stderr, "Could not set LDAP_OPT_DEBUG_LEVEL %d\n", debug );
 289                 }
 290         }
 291
 292 #ifdef SIGPIPE
 293         (void) SIGNAL( SIGPIPE, SIG_IGN );
 294 #endif
 295
 296         /* connect to server */
 297         if ((ld = ldap_init( ldaphost, ldapport )) == NULL) {
 298                 perror("ldap_init");
 299                 return EXIT_FAILURE;
 300         }
 301
 302         /* don't chase referrals */
 303         ldap_set_option( ld, LDAP_OPT_REFERRALS, LDAP_OPT_OFF );
 304
 305         /* LDAPv3 only */
 306         version = 3;
 307         rc = ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, &version );
 308
 309         if(rc != LDAP_OPT_SUCCESS ) {
 310                 fprintf( stderr, "Could not set LDAP_OPT_PROTOCOL_VERSION %d\n", version );
 311         }
 312
 313         if ( use_tls && ldap_start_tls( ld, NULL, NULL ) != LDAP_SUCCESS ) {
 314                 if ( use_tls > 1 ) {
 315                         ldap_perror( ld, "ldap_start_tls" );
 316                         return( EXIT_FAILURE );
 317                 }
 318         }
 319
 320         if ( authmethod == LDAP_AUTH_SASL ) {
 321 #ifdef HAVE_CYRUS_SASL
 322                 int     minssf = 0, maxssf = 0;
 323
 324                 if ( sasl_integrity > 0 )
 325                         maxssf = 1;
 326                 if ( sasl_integrity > 1 )
 327                         minssf = 1;
 328                 if ( sasl_privacy > 0 )
 329                         maxssf = 100000; /* Something big value */
 330                 if ( sasl_privacy > 1 )
 331                         minssf = 56;
 332
 333                 if ( ldap_set_option( ld, LDAP_OPT_X_SASL_MINSSF,
 334                                 (void *)&minssf ) != LDAP_OPT_SUCCESS ) {
 335                         fprintf( stderr, "Could not set LDAP_OPT_X_SASL_MINSSF"
 336                                 "%d\n", minssf);
 337                         return( EXIT_FAILURE );
 338                 }
 339                 if ( ldap_set_option( ld, LDAP_OPT_X_SASL_MAXSSF,
 340                                 (void *)&maxssf ) != LDAP_OPT_SUCCESS ) {
 341                         fprintf( stderr, "Could not set LDAP_OPT_X_SASL_MAXSSF"
 342                                 "%d\n", maxssf);
 343                         return( EXIT_FAILURE );
 344                 }
 345
 346                 if ( ldap_negotiated_sasl_bind_s( ld, binddn, sasl_authc_id,
 347                                 sasl_authz_id, sasl_mech, NULL, NULL, NULL )
 348                                         != LDAP_SUCCESS ) {
 349                         ldap_perror( ld, "ldap_sasl_bind" );
 350                         return( EXIT_FAILURE );
 351                 }
 352 #else
 353                 fprintf( stderr, "%s was not compiled with SASL support\n",
 354                         argv[0] );
 355                 return( EXIT_FAILURE );
 356 #endif
 357         }
 358         else {
 359                 if ( ldap_bind_s( ld, binddn, bindpw, authmethod )
 360                                 != LDAP_SUCCESS ) {
 361                         ldap_perror( ld, "ldap_bind" );
 362                         return( EXIT_FAILURE );
 363                 }
 364         }
 365
 366         if( dn != NULL || oldpw != NULL || newpw != NULL ) {
 367                 /* build change password control */
 368                 BerElement *ber = ber_alloc_t( LBER_USE_DER );
 369
 370                 if( ber == NULL ) {
 371                         perror( "ber_alloc_t" );
 372                         ldap_unbind( ld );
 373                         return EXIT_FAILURE;
 374                 }
 375
 376                 ber_printf( ber, "{" /*}*/ );
 377
 378                 if( dn != NULL ) {
 379                         ber_printf( ber, "ts",
 380                                 LDAP_TAG_EXOP_X_MODIFY_PASSWD_ID, dn );
 381                         free(dn);
 382                 }
 383
 384                 if( oldpw != NULL ) {
 385                         ber_printf( ber, "ts",
 386                                 LDAP_TAG_EXOP_X_MODIFY_PASSWD_NEW, oldpw );
 387                         free(oldpw);
 388                 }
 389
 390                 if( newpw != NULL ) {
 391                         ber_printf( ber, "ts",
 392                                 LDAP_TAG_EXOP_X_MODIFY_PASSWD_NEW, newpw );
 393                         free(newpw);
 394                 }
 395
 396                 ber_printf( ber, /*{*/ "}" );
 397
 398                 rc = ber_flatten( ber, &bv );
 399
 400                 if( rc < 0 ) {
 401                         perror( "ber_flatten" );
 402                         ldap_unbind( ld );
 403                         return EXIT_FAILURE;
 404                 }
 405
 406                 ber_free( ber, 1 );
 407         }
 408
 409         rc = ldap_extended_operation_s( ld,
 410                 LDAP_EXOP_X_MODIFY_PASSWD, bv,
 411                 NULL, NULL,
 412                 &retoid, &retdata );
 413
 414         ber_bvfree( bv );
 415
 416         if( retdata != NULL ) {
 417                 ber_tag_t tag;
 418                 char *s;
 419                 BerElement *ber = ber_init( retdata );
 420
 421                 if( ber == NULL ) {
 422                         perror( "ber_init" );
 423                         ldap_unbind( ld );
 424                         return EXIT_FAILURE;
 425                 }
 426
 427                 /* we should check the tag */
 428                 tag = ber_scanf( ber, "{a}", &s);
 429
 430                 if( tag == LBER_ERROR ) {
 431                         perror( "ber_scanf" );
 432                 } else {
 433                         printf("New password: %s\n", s);
 434                         free( s );
 435                 }
 436
 437                 ber_free( ber, 1 );
 438         }
 439
 440         if ( rc != LDAP_SUCCESS ) {
 441                 ldap_perror( ld, "ldap_extended_operation" );
 442                 ldap_unbind( ld );
 443                 return EXIT_FAILURE;
 444         }
 445
 446         ldap_memfree( retoid );
 447         ber_bvfree( retdata );
 448
 449         /* disconnect from server */
 450         ldap_unbind (ld);
 451
 452         return EXIT_SUCCESS;
 453 }