external/bsd/openldap/dist/clients/tools/ldappasswd.c

   1 /* ldappasswd -- a tool for change LDAP passwords */
   2 /* $OpenLDAP: pkg/ldap/clients/tools/ldappasswd.c,v 1.136.2.4 2008/02/11 23:26:38 kurt Exp $ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 1998-2008 The OpenLDAP Foundation.
   6  * Portions Copyright 1998-2003 Kurt D. Zeilenga.
   7  * Portions Copyright 1998-2001 Net Boolean Incorporated.
   8  * Portions Copyright 2001-2003 IBM Corporation.
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted only as authorized by the OpenLDAP
  13  * Public License.
  14  *
  15  * A copy of this license is available in the file LICENSE in the
  16  * top-level directory of the distribution or, alternatively, at
  17  * <http://www.OpenLDAP.org/license.html>.
  18  */
  19 /* Portions Copyright (c) 1992-1996 Regents of the University of Michigan.
  20  * All rights reserved.
  21  *
  22  * Redistribution and use in source and binary forms are permitted
  23  * provided that this notice is preserved and that due credit is given
  24  * to the University of Michigan at Ann Arbor.  The name of the
  25  * University may not be used to endorse or promote products derived
  26  * from this software without specific prior written permission.  This
  27  * software is provided ``as is'' without express or implied warranty.
  28  */
  29 /* ACKNOWLEDGEMENTS:
  30  * The original ldappasswd(1) tool was developed by Dave Storey (F5
  31  * Network), based on other OpenLDAP client tools (which are, of
  32  * course, based on U-MICH LDAP).  This version was rewritten
  33  * by Kurt D. Zeilenga (based on other OpenLDAP client tools).
  34  */
  35
  36 #include "portable.h"
  37
  38 #include <stdio.h>
  39
  40 #include <ac/stdlib.h>
  41
  42 #include <ac/ctype.h>
  43 #include <ac/socket.h>
  44 #include <ac/string.h>
  45 #include <ac/time.h>
  46 #include <ac/unistd.h>
  47
  48 #include <ldap.h>
  49 #include "lutil.h"
  50 #include "lutil_ldap.h"
  51 #include "ldap_defaults.h"
  52
  53 #include "common.h"
  54
  55
  56 static struct berval newpw = { 0, NULL };
  57 static struct berval oldpw = { 0, NULL };
  58
  59 static int   want_newpw = 0;
  60 static int   want_oldpw = 0;
  61
  62 static char *oldpwfile = NULL;
  63 static char *newpwfile = NULL;
  64
  65 void
  66 usage( void )
  67 {
  68         fprintf( stderr, _("Change password of an LDAP user\n\n"));
  69         fprintf( stderr,_("usage: %s [options] [user]\n"), prog);
  70         fprintf( stderr, _("  user: the authentication identity, commonly a DN\n"));
  71         fprintf( stderr, _("Password change options:\n"));
  72         fprintf( stderr, _("  -a secret  old password\n"));
  73         fprintf( stderr, _("  -A         prompt for old password\n"));
  74         fprintf( stderr, _("  -t file    read file for old password\n"));
  75         fprintf( stderr, _("  -s secret  new password\n"));
  76         fprintf( stderr, _("  -S         prompt for new password\n"));
  77         fprintf( stderr, _("  -T file    read file for new password\n"));
  78         tool_common_usage();
  79         exit( EXIT_FAILURE );
  80 }
  81
  82
  83 const char options[] = "a:As:St:T:"
  84         "d:D:e:h:H:InO:o:p:QR:U:vVw:WxX:y:Y:Z";
  85
  86 int
  87 handle_private_option( int i )
  88 {
  89         switch ( i ) {
  90 #if 0
  91         case 'E': /* passwd extensions */ {
  92                 int             crit;
  93                 char    *control, *cvalue;
  94                 if( protocol == LDAP_VERSION2 ) {
  95                         fprintf( stderr, _("%s: -E incompatible with LDAPv%d\n"),
  96                                  prog, protocol );
  97                         exit( EXIT_FAILURE );
  98                 }
  99
 100                 /* should be extended to support comma separated list of
 101                  *      [!]key[=value] parameters, e.g.  -E !foo,bar=567
 102                  */
 103
 104                 crit = 0;
 105                 cvalue = NULL;
 106                 if( optarg[0] == '!' ) {
 107                         crit = 1;
 108                         optarg++;
 109                 }
 110
 111                 control = strdup( optarg );
 112                 if ( (cvalue = strchr( control, '=' )) != NULL ) {
 113                         *cvalue++ = '\0';
 114                 }
 115                 fprintf( stderr, _("Invalid passwd extension name: %s\n"), control );
 116                 usage();
 117                 }
 118 #endif
 119
 120         case 'a':       /* old password (secret) */
 121                 oldpw.bv_val = strdup( optarg );
 122                 {
 123                         char* p;
 124                         for( p = optarg; *p != '\0'; p++ ) {
 125                                 *p = '\0';
 126                         }
 127                 }
 128                 oldpw.bv_len = strlen( oldpw.bv_val );
 129                 break;
 130
 131         case 'A':       /* prompt for old password */
 132                 want_oldpw++;
 133                 break;
 134
 135         case 's':       /* new password (secret) */
 136                 newpw.bv_val = strdup (optarg);
 137                 {
 138                         char* p;
 139                         for( p = optarg; *p != '\0'; p++ ) {
 140                                 *p = '\0';
 141                         }
 142                 }
 143                 newpw.bv_len = strlen( newpw.bv_val );
 144                 break;
 145
 146         case 'S':       /* prompt for user password */
 147                 want_newpw++;
 148                 break;
 149
 150         case 't':
 151                 oldpwfile = optarg;
 152                 break;
 153
 154         case 'T':
 155                 newpwfile = optarg;
 156                 break;
 157
 158         default:
 159                 return 0;
 160         }
 161         return 1;
 162 }
 163
 164
 165 int
 166 main( int argc, char *argv[] )
 167 {
 168         int rc;
 169         char    *user = NULL;
 170
 171         LDAP           *ld = NULL;
 172         struct berval bv = {0, NULL};
 173         BerElement  *ber = NULL;
 174
 175         int id, code = LDAP_OTHER;
 176         LDAPMessage *res;
 177         char *matcheddn = NULL, *text = NULL, **refs = NULL;
 178         char    *retoid = NULL;
 179         struct berval *retdata = NULL;
 180         LDAPControl **ctrls = NULL;
 181
 182     tool_init( TOOL_PASSWD );
 183         prog = lutil_progname( "ldappasswd", argc, argv );
 184
 185         /* LDAPv3 only */
 186         protocol = LDAP_VERSION3;
 187
 188         tool_args( argc, argv );
 189
 190         if( argc - optind > 1 ) {
 191                 usage();
 192         } else if ( argc - optind == 1 ) {
 193                 user = strdup( argv[optind] );
 194         } else {
 195                 user = NULL;
 196         }
 197
 198         if( oldpwfile ) {
 199                 rc = lutil_get_filed_password( oldpwfile, &oldpw );
 200                 if( rc ) {
 201                         rc = EXIT_FAILURE;
 202                         goto done;
 203                 }
 204         }
 205
 206         if( want_oldpw && oldpw.bv_val == NULL ) {
 207                 /* prompt for old password */
 208                 char *ckoldpw;
 209                 oldpw.bv_val = strdup(getpassphrase(_("Old password: ")));
 210                 ckoldpw = getpassphrase(_("Re-enter old password: "));
 211
 212                 if( oldpw.bv_val == NULL || ckoldpw == NULL ||
 213                         strcmp( oldpw.bv_val, ckoldpw ))
 214                 {
 215                         fprintf( stderr, _("passwords do not match\n") );
 216                         rc = EXIT_FAILURE;
 217                         goto done;
 218                 }
 219
 220                 oldpw.bv_len = strlen( oldpw.bv_val );
 221         }
 222
 223         if( newpwfile ) {
 224                 rc = lutil_get_filed_password( newpwfile, &newpw );
 225                 if( rc ) {
 226                         rc = EXIT_FAILURE;
 227                         goto done;
 228                 }
 229         }
 230
 231         if( want_newpw && newpw.bv_val == NULL ) {
 232                 /* prompt for new password */
 233                 char *cknewpw;
 234                 newpw.bv_val = strdup(getpassphrase(_("New password: ")));
 235                 cknewpw = getpassphrase(_("Re-enter new password: "));
 236
 237                 if( newpw.bv_val == NULL || cknewpw == NULL ||
 238                         strcmp( newpw.bv_val, cknewpw ))
 239                 {
 240                         fprintf( stderr, _("passwords do not match\n") );
 241                         rc = EXIT_FAILURE;
 242                         goto done;
 243                 }
 244
 245                 newpw.bv_len = strlen( newpw.bv_val );
 246         }
 247
 248         if ( pw_file ) {
 249                 rc = lutil_get_filed_password( pw_file, &passwd );
 250                 if( rc ) {
 251                         rc = EXIT_FAILURE;
 252                         goto done;
 253                 }
 254
 255         } else if ( want_bindpw ) {
 256                 passwd.bv_val = getpassphrase( _("Enter LDAP Password: ") );
 257                 passwd.bv_len = passwd.bv_val ? strlen( passwd.bv_val ) : 0;
 258         }
 259
 260         ld = tool_conn_setup( 0, 0 );
 261
 262         tool_bind( ld );
 263
 264         if ( assertion || authzid || manageDSAit || noop ) {
 265                 tool_server_controls( ld, NULL, 0 );
 266         }
 267
 268         if( user != NULL || oldpw.bv_val != NULL || newpw.bv_val != NULL ) {
 269                 /* build the password modify request data */
 270                 ber = ber_alloc_t( LBER_USE_DER );
 271
 272                 if( ber == NULL ) {
 273                         perror( "ber_alloc_t" );
 274                         rc = EXIT_FAILURE;
 275                         goto done;
 276                 }
 277
 278                 ber_printf( ber, "{" /*}*/ );
 279
 280                 if( user != NULL ) {
 281                         ber_printf( ber, "ts",
 282                                 LDAP_TAG_EXOP_MODIFY_PASSWD_ID, user );
 283                         free(user);
 284                 }
 285
 286                 if( oldpw.bv_val != NULL ) {
 287                         ber_printf( ber, "tO",
 288                                 LDAP_TAG_EXOP_MODIFY_PASSWD_OLD, &oldpw );
 289                         free(oldpw.bv_val);
 290                 }
 291
 292                 if( newpw.bv_val != NULL ) {
 293                         ber_printf( ber, "tO",
 294                                 LDAP_TAG_EXOP_MODIFY_PASSWD_NEW, &newpw );
 295                         free(newpw.bv_val);
 296                 }
 297
 298                 ber_printf( ber, /*{*/ "N}" );
 299
 300                 rc = ber_flatten2( ber, &bv, 0 );
 301
 302                 if( rc < 0 ) {
 303                         perror( "ber_flatten2" );
 304                         rc = EXIT_FAILURE;
 305                         goto done;
 306                 }
 307         }
 308
 309         if ( dont ) {
 310                 rc = LDAP_SUCCESS;
 311                 goto done;
 312         }
 313
 314         tool_server_controls( ld, NULL, 0);
 315
 316         rc = ldap_extended_operation( ld,
 317                 LDAP_EXOP_MODIFY_PASSWD, bv.bv_val ? &bv : NULL,
 318                 NULL, NULL, &id );
 319
 320         ber_free( ber, 1 );
 321
 322         if( rc != LDAP_SUCCESS ) {
 323                 tool_perror( "ldap_extended_operation", rc, NULL, NULL, NULL, NULL );
 324                 rc = EXIT_FAILURE;
 325                 goto done;
 326         }
 327
 328         for ( ; ; ) {
 329                 struct timeval  tv;
 330
 331                 if ( tool_check_abandon( ld, id ) ) {
 332                         return LDAP_CANCELLED;
 333                 }
 334
 335                 tv.tv_sec = 0;
 336                 tv.tv_usec = 100000;
 337
 338                 rc = ldap_result( ld, LDAP_RES_ANY, LDAP_MSG_ALL, &tv, &res );
 339                 if ( rc < 0 ) {
 340                         tool_perror( "ldap_result", rc, NULL, NULL, NULL, NULL );
 341                         return rc;
 342                 }
 343
 344                 if ( rc != 0 ) {
 345                         break;
 346                 }
 347         }
 348
 349         rc = ldap_parse_result( ld, res,
 350                 &code, &matcheddn, &text, &refs, &ctrls, 0 );
 351         if( rc != LDAP_SUCCESS ) {
 352                 tool_perror( "ldap_parse_result", rc, NULL, NULL, NULL, NULL );
 353                 rc = EXIT_FAILURE;
 354                 goto done;
 355         }
 356
 357         rc = ldap_parse_extended_result( ld, res, &retoid, &retdata, 1 );
 358         if( rc != LDAP_SUCCESS ) {
 359                 tool_perror( "ldap_parse_extended_result", rc, NULL, NULL, NULL, NULL );
 360                 rc = EXIT_FAILURE;
 361                 goto done;
 362         }
 363
 364         if( retdata != NULL ) {
 365                 ber_tag_t tag;
 366                 char *s;
 367                 ber = ber_init( retdata );
 368
 369                 if( ber == NULL ) {
 370                         perror( "ber_init" );
 371                         rc = EXIT_FAILURE;
 372                         goto done;
 373                 }
 374
 375                 /* we should check the tag */
 376                 tag = ber_scanf( ber, "{a}", &s);
 377
 378                 if( tag == LBER_ERROR ) {
 379                         perror( "ber_scanf" );
 380                 } else {
 381                         printf(_("New password: %s\n"), s);
 382                         free( s );
 383                 }
 384
 385                 ber_free( ber, 1 );
 386
 387         } else if ( code == LDAP_SUCCESS && newpw.bv_val == NULL ) {
 388                 tool_perror( "ldap_parse_extended_result", LDAP_DECODING_ERROR,
 389                         " new password expected", NULL, NULL, NULL );
 390         }
 391
 392 skip:
 393         if( verbose || code != LDAP_SUCCESS ||
 394                 matcheddn || text || refs || ctrls )
 395         {
 396                 printf( _("Result: %s (%d)\n"), ldap_err2string( code ), code );
 397
 398                 if( text && *text ) {
 399                         printf( _("Additional info: %s\n"), text );
 400                 }
 401
 402                 if( matcheddn && *matcheddn ) {
 403                         printf( _("Matched DN: %s\n"), matcheddn );
 404                 }
 405
 406                 if( refs ) {
 407                         int i;
 408                         for( i=0; refs[i]; i++ ) {
 409                                 printf(_("Referral: %s\n"), refs[i] );
 410                         }
 411                 }
 412
 413                 if( ctrls ) {
 414                         tool_print_ctrls( ld, ctrls );
 415                         ldap_controls_free( ctrls );
 416                 }
 417         }
 418
 419         ber_memfree( text );
 420         ber_memfree( matcheddn );
 421         ber_memvfree( (void **) refs );
 422         ber_memfree( retoid );
 423         ber_bvfree( retdata );
 424
 425         rc = ( code == LDAP_SUCCESS ) ? EXIT_SUCCESS : EXIT_FAILURE;
 426
 427 done:
 428         /* disconnect from server */
 429         if ( ld )
 430                 tool_unbind( ld );
 431         tool_destroy();
 432         return rc;
 433 }