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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2000 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 "       -C\t\tchase referrals\n"
  38 "       -D binddn\tbind DN\n"
  39 "       -E\t\trequest SASL privacy (-EE to make it critical)\n"
  40 "       -h host\t\tLDAP server (default: localhost)\n"
  41 "       -I\t\trequest SASL integrity checking (-II to make it\n"
  42 "               \tcritical)\n"
  43 "       -n\t\tmake no modifications\n"
  44 "       -p port\t\tport on LDAP server\n"
  45 "       -S\t\tprompt for new password\n"
  46 "       -s secret\tnew password\n"
  47 "       -U user\t\tSASL authentication identity (username)\n"
  48 "       -v\t\tverbose mode\n"
  49 "       -w passwd\tbind password (for simple authentication)\n"
  50 "       -W\t\tprompt for bind password\n"
  51 "       -X id\t\tSASL authorization identity (\"dn:<dn>\" or \"u:<user>\")\n"
  52 "       -Y mech\t\tSASL mechanism\n"
  53 "       -Z\t\tissue Start TLS request (-ZZ to require successful response)\n"
  54                 , s );
  55
  56         exit( EXIT_FAILURE );
  57 }
  58
  59 int
  60 main( int argc, char *argv[] )
  61 {
  62         int rc;
  63         char    *ldaphost = NULL;
  64
  65         char    *dn = NULL;
  66         char    *binddn = NULL;
  67
  68         struct berval passwd = { 0, NULL};
  69         char    *newpw = NULL;
  70         char    *oldpw = NULL;
  71
  72         int             want_bindpw = 0;
  73         int             want_newpw = 0;
  74         int             want_oldpw = 0;
  75
  76         int             noupdates = 0;
  77         int             i;
  78         int             ldapport = 0;
  79         int             debug = 0;
  80         int             version = -1;
  81         int             authmethod = LDAP_AUTH_SIMPLE;
  82 #ifdef HAVE_CYRUS_SASL
  83         char            *sasl_authc_id = NULL;
  84         char            *sasl_authz_id = NULL;
  85         char            *sasl_mech = NULL;
  86         int             sasl_integrity = 0;
  87         int             sasl_privacy = 0;
  88 #endif
  89         int             use_tls = 0;
  90         int             referrals = 0;
  91         LDAP           *ld;
  92         struct berval *bv = NULL;
  93
  94         int id, code;
  95         LDAPMessage *res;
  96         char *matcheddn = NULL, *text = NULL, **refs = NULL;
  97         char    *retoid = NULL;
  98         struct berval *retdata = NULL;
  99
 100         if (argc == 1)
 101                 usage (argv[0]);
 102
 103         while( (i = getopt( argc, argv,
 104                 "Aa:CD:d:EIh:np:Ss:U:vWw:X:Y:Z" )) != EOF )
 105         {
 106                 switch (i) {
 107                 case 'A':       /* prompt for oldr password */
 108                         want_oldpw++;
 109                         break;
 110                 case 'a':       /* old password (secret) */
 111                         oldpw = strdup (optarg);
 112
 113                         {
 114                                 char* p;
 115
 116                                 for( p = optarg; *p == '\0'; p++ ) {
 117                                         *p = '*';
 118                                 }
 119                         }
 120                         break;
 121                 case 'C':
 122                         referrals++;
 123                         break;
 124                 case 'D':       /* bind distinguished name */
 125                         binddn = strdup (optarg);
 126                         break;
 127
 128                 case 'd':       /* debugging option */
 129                         debug |= atoi (optarg);
 130                         break;
 131
 132                 case 'h':       /* ldap host */
 133                         ldaphost = strdup (optarg);
 134                         break;
 135
 136                 case 'n':       /* don't update entry(s) */
 137                         noupdates++;
 138                         break;
 139
 140                 case 'p':       /* ldap port */
 141                         ldapport = strtol( optarg, NULL, 10 );
 142                         break;
 143
 144                 case 'S':       /* prompt for user password */
 145                         want_newpw++;
 146                         break;
 147
 148                 case 's':       /* new password (secret) */
 149                         newpw = strdup (optarg);
 150                         {
 151                                 char* p;
 152
 153                                 for( p = optarg; *p == '\0'; p++ ) {
 154                                         *p = '*';
 155                                 }
 156                         }
 157                         break;
 158
 159                 case 'v':       /* verbose */
 160                         verbose++;
 161                         break;
 162
 163                 case 'W':       /* prompt for bind password */
 164                         want_bindpw++;
 165                         break;
 166
 167                 case 'w':       /* bind password */
 168                         passwd.bv_val = strdup (optarg);
 169                         {
 170                                 char* p;
 171
 172                                 for( p = optarg; *p == '\0'; p++ ) {
 173                                         *p = '*';
 174                                 }
 175                         }
 176                         passwd.bv_len = strlen( passwd.bv_val );
 177                         break;
 178
 179                 case 'I':
 180 #ifdef HAVE_CYRUS_SASL
 181                         sasl_integrity++;
 182                         authmethod = LDAP_AUTH_SASL;
 183 #else
 184                         fprintf( stderr, "%s was not compiled with SASL "
 185                                 "support\n", argv[0] );
 186                         return( EXIT_FAILURE );
 187 #endif
 188                         break;
 189                 case 'E':
 190 #ifdef HAVE_CYRUS_SASL
 191                         sasl_privacy++;
 192                         authmethod = LDAP_AUTH_SASL;
 193 #else
 194                         fprintf( stderr, "%s was not compiled with SASL "
 195                                 "support\n", argv[0] );
 196                         return( EXIT_FAILURE );
 197 #endif
 198                         break;
 199                 case 'Y':
 200 #ifdef HAVE_CYRUS_SASL
 201                         if ( strcasecmp( optarg, "any" ) &&
 202                                         strcmp( optarg, "*" ) ) {
 203                                 sasl_mech = strdup( optarg );
 204                         }
 205                         authmethod = LDAP_AUTH_SASL;
 206 #else
 207                         fprintf( stderr, "%s was not compiled with SASL "
 208                                 "support\n", argv[0] );
 209                         return( EXIT_FAILURE );
 210 #endif
 211                         break;
 212                 case 'U':
 213 #ifdef HAVE_CYRUS_SASL
 214                         sasl_authc_id = strdup( optarg );
 215                         authmethod = LDAP_AUTH_SASL;
 216 #else
 217                         fprintf( stderr, "%s was not compiled with SASL "
 218                                 "support\n", argv[0] );
 219                         return( EXIT_FAILURE );
 220 #endif
 221                         break;
 222                 case 'X':
 223 #ifdef HAVE_CYRUS_SASL
 224                         sasl_authz_id = strdup( optarg );
 225                         authmethod = LDAP_AUTH_SASL;
 226 #else
 227                         fprintf( stderr, "%s was not compiled with SASL "
 228                                 "support\n", argv[0] );
 229                         return( EXIT_FAILURE );
 230 #endif
 231                         break;
 232                 case 'Z':
 233 #ifdef HAVE_TLS
 234                         use_tls++;
 235 #else
 236                         fprintf( stderr, "%s was not compiled with TLS "
 237                                 "support\n", argv[0] );
 238                         return( EXIT_FAILURE );
 239 #endif
 240                         break;
 241
 242                 default:
 243                         usage (argv[0]);
 244                 }
 245         }
 246
 247         if( argc - optind != 1 ) {
 248                 usage( argv[0] );
 249         }
 250
 251         dn = strdup( argv[optind] );
 252
 253         if( want_oldpw && oldpw == NULL ) {
 254                 /* prompt for old password */
 255                 char *ckoldpw;
 256                 newpw = strdup(getpassphrase("Old password: "));
 257                 ckoldpw = getpassphrase("Re-enter old password: ");
 258
 259                 if( newpw== NULL || ckoldpw == NULL ||
 260                         strncmp( oldpw, ckoldpw, strlen(oldpw) ))
 261                 {
 262                         fprintf( stderr, "passwords do not match\n" );
 263                         return EXIT_FAILURE;
 264                 }
 265         }
 266
 267         if( want_newpw && newpw == NULL ) {
 268                 /* prompt for new password */
 269                 char *cknewpw;
 270                 newpw = strdup(getpassphrase("New password: "));
 271                 cknewpw = getpassphrase("Re-enter new password: ");
 272
 273                 if( newpw== NULL || cknewpw == NULL ||
 274                         strncmp( newpw, cknewpw, strlen(newpw) ))
 275                 {
 276                         fprintf( stderr, "passwords do not match\n" );
 277                         return EXIT_FAILURE;
 278                 }
 279         }
 280
 281         if( binddn == NULL && dn != NULL ) {
 282                 binddn = dn;
 283                 dn = NULL;
 284
 285                 if( passwd.bv_val == NULL ) {
 286                         passwd.bv_val = oldpw;
 287                         passwd.bv_len = oldpw == NULL ? 0 : strlen( oldpw );
 288                 }
 289         }
 290
 291         if (want_bindpw && passwd.bv_val == NULL ) {
 292                 /* handle bind password */
 293                 fprintf( stderr, "Bind DN: %s\n", binddn );
 294                 passwd.bv_val = strdup( getpassphrase("Enter bind password: "));
 295                 passwd.bv_len = passwd.bv_val ? strlen( passwd.bv_val ) : 0;
 296         }
 297
 298         if ( debug ) {
 299                 if( ber_set_option( NULL, LBER_OPT_DEBUG_LEVEL, &debug ) != LBER_OPT_SUCCESS ) {
 300                         fprintf( stderr, "Could not set LBER_OPT_DEBUG_LEVEL %d\n", debug );
 301                 }
 302                 if( ldap_set_option( NULL, LDAP_OPT_DEBUG_LEVEL, &debug ) != LDAP_OPT_SUCCESS ) {
 303                         fprintf( stderr, "Could not set LDAP_OPT_DEBUG_LEVEL %d\n", debug );
 304                 }
 305         }
 306
 307 #ifdef SIGPIPE
 308         (void) SIGNAL( SIGPIPE, SIG_IGN );
 309 #endif
 310
 311         /* connect to server */
 312         if ((ld = ldap_init( ldaphost, ldapport )) == NULL) {
 313                 perror("ldap_init");
 314                 return EXIT_FAILURE;
 315         }
 316
 317         /* referrals */
 318         if (ldap_set_option( ld, LDAP_OPT_REFERRALS,
 319                 referrals ? LDAP_OPT_ON : LDAP_OPT_OFF ) != LDAP_OPT_SUCCESS )
 320         {
 321                 fprintf( stderr, "Could not set LDAP_OPT_REFERRALS %s\n",
 322                         referrals ? "on" : "off" );
 323                 return EXIT_FAILURE;
 324         }
 325
 326         /* LDAPv3 only */
 327         version = 3;
 328         rc = ldap_set_option( ld, LDAP_OPT_PROTOCOL_VERSION, &version );
 329
 330         if(rc != LDAP_OPT_SUCCESS ) {
 331                 fprintf( stderr, "Could not set LDAP_OPT_PROTOCOL_VERSION %d\n", version );
 332                 return EXIT_FAILURE;
 333         }
 334
 335         if ( use_tls && ldap_start_tls_s( ld, NULL, NULL ) != LDAP_SUCCESS ) {
 336                 if ( use_tls > 1 ) {
 337                         ldap_perror( ld, "ldap_start_tls" );
 338                         return( EXIT_FAILURE );
 339                 }
 340                 fprintf( stderr, "WARNING: could not start TLS\n" );
 341         }
 342
 343         if ( authmethod == LDAP_AUTH_SASL ) {
 344 #ifdef HAVE_CYRUS_SASL
 345                 int     minssf = 0, maxssf = 0;
 346
 347                 if ( sasl_integrity > 0 )
 348                         maxssf = 1;
 349                 if ( sasl_integrity > 1 )
 350                         minssf = 1;
 351                 if ( sasl_privacy > 0 )
 352                         maxssf = 100000; /* Something big value */
 353                 if ( sasl_privacy > 1 )
 354                         minssf = 56;
 355
 356                 if ( ldap_set_option( ld, LDAP_OPT_X_SASL_MINSSF,
 357                                 (void *)&minssf ) != LDAP_OPT_SUCCESS ) {
 358                         fprintf( stderr, "Could not set LDAP_OPT_X_SASL_MINSSF"
 359                                 "%d\n", minssf);
 360                         return( EXIT_FAILURE );
 361                 }
 362                 if ( ldap_set_option( ld, LDAP_OPT_X_SASL_MAXSSF,
 363                                 (void *)&maxssf ) != LDAP_OPT_SUCCESS ) {
 364                         fprintf( stderr, "Could not set LDAP_OPT_X_SASL_MAXSSF"
 365                                 "%d\n", maxssf);
 366                         return( EXIT_FAILURE );
 367                 }
 368
 369                 rc = ldap_negotiated_sasl_bind_s( ld, binddn, sasl_authc_id,
 370                                 sasl_authz_id, sasl_mech,
 371                                 passwd.bv_len ? &passwd : NULL,
 372                                 NULL, NULL );
 373
 374                 if( rc != LDAP_SUCCESS ) {
 375                         ldap_perror( ld, "ldap_negotiated_sasl_bind_s" );
 376                         return( EXIT_FAILURE );
 377                 }
 378 #else
 379                 fprintf( stderr, "%s was not compiled with SASL support\n",
 380                         argv[0] );
 381                 return( EXIT_FAILURE );
 382 #endif
 383         }
 384         else {
 385                 if ( ldap_bind_s( ld, binddn, passwd.bv_val, authmethod )
 386                                 != LDAP_SUCCESS ) {
 387                         ldap_perror( ld, "ldap_bind" );
 388                         return( EXIT_FAILURE );
 389                 }
 390         }
 391
 392         if( dn != NULL || oldpw != NULL || newpw != NULL ) {
 393                 /* build change password control */
 394                 BerElement *ber = ber_alloc_t( LBER_USE_DER );
 395
 396                 if( ber == NULL ) {
 397                         perror( "ber_alloc_t" );
 398                         ldap_unbind( ld );
 399                         return EXIT_FAILURE;
 400                 }
 401
 402                 ber_printf( ber, "{" /*}*/ );
 403
 404                 if( dn != NULL ) {
 405                         ber_printf( ber, "ts",
 406                                 LDAP_TAG_EXOP_X_MODIFY_PASSWD_ID, dn );
 407                         free(dn);
 408                 }
 409
 410                 if( oldpw != NULL ) {
 411                         ber_printf( ber, "ts",
 412                                 LDAP_TAG_EXOP_X_MODIFY_PASSWD_NEW, oldpw );
 413                         free(oldpw);
 414                 }
 415
 416                 if( newpw != NULL ) {
 417                         ber_printf( ber, "ts",
 418                                 LDAP_TAG_EXOP_X_MODIFY_PASSWD_NEW, newpw );
 419                         free(newpw);
 420                 }
 421
 422                 ber_printf( ber, /*{*/ "N}" );
 423
 424                 rc = ber_flatten( ber, &bv );
 425
 426                 if( rc < 0 ) {
 427                         perror( "ber_flatten" );
 428                         ldap_unbind( ld );
 429                         return EXIT_FAILURE;
 430                 }
 431
 432                 ber_free( ber, 1 );
 433         }
 434
 435         if ( noupdates ) {
 436                 rc = LDAP_SUCCESS;
 437                 goto skip;
 438         }
 439
 440         rc = ldap_extended_operation( ld,
 441                 LDAP_EXOP_X_MODIFY_PASSWD, bv,
 442                 NULL, NULL, &id );
 443
 444         ber_bvfree( bv );
 445
 446         if( rc != LDAP_SUCCESS ) {
 447                 ldap_perror( ld, "ldap_extended_operation" );
 448                 ldap_unbind( ld );
 449                 return EXIT_FAILURE;
 450         }
 451
 452         rc = ldap_result( ld, LDAP_RES_ANY, LDAP_MSG_ALL, NULL, &res );
 453         if ( rc != LDAP_SUCCESS ) {
 454                 ldap_perror( ld, "ldap_result" );
 455                 return rc;
 456         }
 457
 458         rc = ldap_parse_result( ld, res, &code, &matcheddn, &text, &refs, NULL, 0 );
 459
 460         if( rc != LDAP_SUCCESS ) {
 461                 ldap_perror( ld, "ldap_parse_result" );
 462                 return rc;
 463         }
 464
 465         rc = ldap_parse_extended_result( ld, res, &retoid, &retdata, 1 );
 466
 467         if( rc != LDAP_SUCCESS ) {
 468                 ldap_perror( ld, "ldap_parse_result" );
 469                 return rc;
 470         }
 471
 472         if( retdata != NULL ) {
 473                 ber_tag_t tag;
 474                 char *s;
 475                 BerElement *ber = ber_init( retdata );
 476
 477                 if( ber == NULL ) {
 478                         perror( "ber_init" );
 479                         ldap_unbind( ld );
 480                         return EXIT_FAILURE;
 481                 }
 482
 483                 /* we should check the tag */
 484                 tag = ber_scanf( ber, "{a}", &s);
 485
 486                 if( tag == LBER_ERROR ) {
 487                         perror( "ber_scanf" );
 488                 } else {
 489                         printf("New password: %s\n", s);
 490                         free( s );
 491                 }
 492
 493                 ber_free( ber, 1 );
 494         }
 495
 496         if( verbose || code != LDAP_SUCCESS || matcheddn || text || refs ) {
 497                 printf( "Result: %s (%d)\n", ldap_err2string( code ), code );
 498
 499                 if( text && *text ) {
 500                         printf( "Additional info: %s\n", text );
 501                 }
 502
 503                 if( matcheddn && *matcheddn ) {
 504                         printf( "Matched DN: %s\n", matcheddn );
 505                 }
 506
 507                 if( refs ) {
 508                         int i;
 509                         for( i=0; refs[i]; i++ ) {
 510                                 printf("Referral: %s\n", refs[i] );
 511                         }
 512                 }
 513         }
 514
 515         ber_memfree( text );
 516         ber_memfree( matcheddn );
 517         ber_memvfree( refs );
 518         ber_memfree( retoid );
 519         ber_bvfree( retdata );
 520
 521 skip:
 522         /* disconnect from server */
 523         ldap_unbind (ld);
 524
 525         return EXIT_SUCCESS;
 526 }