git.sur5r.net Git - openldap/blob - servers/slapd/back-ldap/config.c

   1 /* config.c - ldap backend configuration file routine */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2003-2004 The OpenLDAP Foundation.
   6  * Portions Copyright 1999-2003 Howard Chu.
   7  * Portions Copyright 2000-2003 Pierangelo Masarati.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms, with or without
  11  * modification, are permitted only as authorized by the OpenLDAP
  12  * Public License.
  13  *
  14  * A copy of this license is available in the file LICENSE in the
  15  * top-level directory of the distribution or, alternatively, at
  16  * <http://www.OpenLDAP.org/license.html>.
  17  */
  18 /* ACKNOWLEDGEMENTS:
  19  * This work was initially developed by the Howard Chu for inclusion
  20  * in OpenLDAP Software and subsequently enhanced by Pierangelo
  21  * Masarati.
  22  */
  23
  24 #include "portable.h"
  25
  26 #include <stdio.h>
  27
  28 #include <ac/string.h>
  29 #include <ac/socket.h>
  30
  31 #include "slap.h"
  32 #include "back-ldap.h"
  33 #include "lutil.h"
  34 #undef ldap_debug
  35 /* for advanced URL parsing */
  36 #include "../../../libraries/libldap/ldap-int.h"
  37
  38 static SLAP_EXTOP_MAIN_FN ldap_back_exop_whoami;
  39
  40 static int
  41 parse_idassert( BackendDB *be, const char *fname, int lineno,
  42                 int argc, char **argv );
  43
  44 int
  45 ldap_back_db_config(
  46     BackendDB   *be,
  47     const char  *fname,
  48     int         lineno,
  49     int         argc,
  50     char        **argv
  51 )
  52 {
  53         struct ldapinfo *li = (struct ldapinfo *) be->be_private;
  54
  55         if ( li == NULL ) {
  56                 fprintf( stderr, "%s: line %d: ldap backend info is null!\n",
  57                     fname, lineno );
  58                 return( 1 );
  59         }
  60
  61         /* server address to query (depricated, use "uri" directive) */
  62         if ( strcasecmp( argv[0], "server" ) == 0 ) {
  63                 ber_len_t       l;
  64
  65                 if (argc != 2) {
  66                         fprintf( stderr,
  67         "%s: line %d: missing address in \"server <address>\" line\n",
  68                             fname, lineno );
  69                         return( 1 );
  70                 }
  71                 if (li->url != NULL)
  72                         ch_free(li->url);
  73                 l = strlen( argv[1] ) + STRLENOF( "ldap:///") + 1;
  74                 li->url = ch_calloc( l, sizeof( char ) );
  75                 if (li->url == NULL) {
  76                         fprintf( stderr, "%s: line %d: malloc failed\n" );
  77                         return 1;
  78                 }
  79
  80                 snprintf( li->url, l, "ldap://%s/", argv[1] );
  81
  82         /* URI of server to query (preferred over "server" directive) */
  83         } else if ( strcasecmp( argv[0], "uri" ) == 0 ) {
  84                 LDAPURLDesc     tmplud, *tmpludp;
  85                 int             urlrc;
  86
  87                 if (argc != 2) {
  88                         fprintf( stderr, "%s: line %d: "
  89                                 "missing uri "
  90                                 "in \"uri <uri>\" line\n",
  91                                 fname, lineno );
  92                         return( 1 );
  93                 }
  94                 if ( li->url != NULL ) {
  95                         ch_free( li->url );
  96                 }
  97                 if ( li->lud != NULL ) {
  98                         ldap_free_urllist( li->lud );
  99                 }
 100
 101 #if 0
 102                 /* PARANOID: DN and more are not required nor allowed */
 103                 urlrc = ldap_url_parselist_ext( &li->lud, argv[ 1 ], "\t" );
 104 #else
 105                 urlrc =  ldap_url_parselist( &li->lud, argv[ 1 ] );
 106 #endif
 107                 if ( urlrc != LDAP_URL_SUCCESS ) {
 108                         char    *why;
 109
 110                         switch ( urlrc ) {
 111                         case LDAP_URL_ERR_MEM:
 112                                 why = "no memory";
 113                                 break;
 114                         case LDAP_URL_ERR_PARAM:
 115                                 why = "parameter is bad";
 116                                 break;
 117                         case LDAP_URL_ERR_BADSCHEME:
 118                                 why = "URL doesn't begin with \"[c]ldap[si]://\"";
 119                                 break;
 120                         case LDAP_URL_ERR_BADENCLOSURE:
 121                                 why = "URL is missing trailing \">\"";
 122                                 break;
 123                         case LDAP_URL_ERR_BADURL:
 124                                 why = "URL is bad";
 125                         case LDAP_URL_ERR_BADHOST:
 126                                 why = "host/port is bad";
 127                                 break;
 128                         case LDAP_URL_ERR_BADATTRS:
 129                                 why = "bad (or missing) attributes";
 130                                 break;
 131                         case LDAP_URL_ERR_BADSCOPE:
 132                                 why = "scope string is invalid (or missing)";
 133                                 break;
 134                         case LDAP_URL_ERR_BADFILTER:
 135                                 why = "bad or missing filter";
 136                                 break;
 137                         case LDAP_URL_ERR_BADEXTS:
 138                                 why = "bad or missing extensions";
 139                                 break;
 140                         default:
 141                                 why = "unknown reason";
 142                                 break;
 143                         }
 144                         fprintf( stderr, "%s: line %d: "
 145                                 "unable to parse uri \"%s\" "
 146                                 "in \"uri <uri>\" line: %s\n",
 147                                 fname, lineno, argv[ 1 ], why );
 148                         return 1;
 149                 }
 150
 151                 for ( tmpludp = li->lud; tmpludp; tmpludp = tmpludp->lud_next ) {
 152                         if ( ( tmpludp->lud_dn != NULL && tmpludp->lud_dn[0] != '\0' )
 153                                         || tmpludp->lud_attrs != NULL
 154                                         || tmpludp->lud_filter != NULL
 155                                         || tmpludp->lud_exts != NULL )
 156                         {
 157                                 fprintf( stderr, "%s: line %d: "
 158                                         "warning, only protocol, "
 159                                         "host and port allowed "
 160                                         "in \"uri <uri>\" statement "
 161                                         "for \"%s\"\n",
 162                                         fname, lineno, argv[1] );
 163                         }
 164                 }
 165
 166 #if 0
 167                 for ( tmpludp = li->lud; tmpludp; tmpludp = tmpludp->lud_next ) {
 168                         char            *tmpurl;
 169                         ber_len_t       oldlen = 0, len;
 170
 171                         tmplud = *tmpludp;
 172                         tmplud.lud_dn = "";
 173                         tmplud.lud_attrs = NULL;
 174                         tmplud.lud_filter = NULL;
 175                         if ( !ldap_is_ldapi_url( argv[ 1 ] ) ) {
 176                                 tmplud.lud_exts = NULL;
 177                                 tmplud.lud_crit_exts = 0;
 178                         }
 179
 180                         tmpurl = ldap_url_desc2str( &tmplud );
 181
 182                         if ( tmpurl == NULL ) {
 183                                 fprintf( stderr, "%s: line %d: "
 184                                         "unable to rebuild uri "
 185                                         "in \"uri <uri>\" statement "
 186                                         "for \"%s\"\n",
 187                                         fname, lineno, argv[ 1 ] );
 188                                 return 1;
 189                         }
 190
 191                         len = strlen( tmpurl );
 192                         if ( li->url ) {
 193                                 oldlen = strlen( li->url ) + STRLENOF( " " );
 194                         }
 195                         li->url = ch_realloc( li->url, oldlen + len + 1);
 196                         if ( oldlen ) {
 197                                 li->url[oldlen - 1] = " ";
 198                         }
 199                         AC_MEMCPY( &li->url[oldlen], tmpurl, len + 1 );
 200                         ch_free( tmpurl );
 201                 }
 202 #else
 203                 li->url = ch_strdup( argv[ 1 ] );
 204 #endif
 205
 206         /* name to use for ldap_back_group */
 207         } else if ( strcasecmp( argv[0], "acl-authcdn" ) == 0
 208                         || strcasecmp( argv[0], "binddn" ) == 0 ) {
 209                 if (argc != 2) {
 210                         fprintf( stderr,
 211         "%s: line %d: missing name in \"%s <name>\" line\n",
 212                             fname, lineno, argv[0] );
 213                         return( 1 );
 214                 }
 215                 ber_str2bv( argv[1], 0, 1, &li->acl_authcDN );
 216
 217         /* password to use for ldap_back_group */
 218         } else if ( strcasecmp( argv[0], "acl-passwd" ) == 0
 219                         || strcasecmp( argv[0], "bindpw" ) == 0 ) {
 220                 if (argc != 2) {
 221                         fprintf( stderr,
 222         "%s: line %d: missing password in \"%s <password>\" line\n",
 223                             fname, lineno, argv[0] );
 224                         return( 1 );
 225                 }
 226                 ber_str2bv( argv[1], 0, 1, &li->acl_passwd );
 227
 228 #ifdef LDAP_BACK_PROXY_AUTHZ
 229         /* identity assertion stuff... */
 230         } else if ( strncasecmp( argv[0], "idassert-", STRLENOF( "idassert-" ) ) == 0
 231                         || strncasecmp( argv[0], "proxyauthz", STRLENOF( "proxyauthz" ) ) == 0 ) {
 232                 return parse_idassert( be, fname, lineno, argc, argv );
 233 #endif /* LDAP_BACK_PROXY_AUTHZ */
 234
 235         /* save bind creds for referral rebinds? */
 236         } else if ( strcasecmp( argv[0], "rebind-as-user" ) == 0 ) {
 237                 if (argc != 1) {
 238                         fprintf( stderr,
 239         "%s: line %d: rebind-as-user takes no arguments\n",
 240                             fname, lineno );
 241                         return( 1 );
 242                 }
 243                 li->savecred = 1;
 244
 245         /* intercept exop_who_am_i? */
 246         } else if ( strcasecmp( argv[0], "proxy-whoami" ) == 0 ) {
 247                 if (argc != 1) {
 248                         fprintf( stderr,
 249         "%s: line %d: proxy-whoami takes no arguments\n",
 250                             fname, lineno );
 251                         return( 1 );
 252                 }
 253                 load_extop( (struct berval *)&slap_EXOP_WHOAMI,
 254                         0, ldap_back_exop_whoami );
 255
 256         /* dn massaging */
 257         } else if ( strcasecmp( argv[0], "suffixmassage" ) == 0 ) {
 258                 BackendDB *tmp_be;
 259                 struct berval bvnc, nvnc, pvnc, brnc, nrnc, prnc;
 260 #ifdef ENABLE_REWRITE
 261                 int rc;
 262 #endif /* ENABLE_REWRITE */
 263
 264                 /*
 265                  * syntax:
 266                  *
 267                  *      suffixmassage <suffix> <massaged suffix>
 268                  *
 269                  * the <suffix> field must be defined as a valid suffix
 270                  * (or suffixAlias?) for the current database;
 271                  * the <massaged suffix> shouldn't have already been
 272                  * defined as a valid suffix or suffixAlias for the
 273                  * current server
 274                  */
 275                 if ( argc != 3 ) {
 276                         fprintf( stderr, "%s: line %d: syntax is"
 277                                        " \"suffixMassage <suffix>"
 278                                        " <massaged suffix>\"\n",
 279                                 fname, lineno );
 280                         return( 1 );
 281                 }
 282
 283                 ber_str2bv( argv[1], 0, 0, &bvnc );
 284                 if ( dnPrettyNormal( NULL, &bvnc, &pvnc, &nvnc, NULL ) != LDAP_SUCCESS ) {
 285                         fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n",
 286                                 fname, lineno, bvnc.bv_val );
 287                         return( 1 );
 288                 }
 289                 tmp_be = select_backend( &nvnc, 0, 0 );
 290                 if ( tmp_be != NULL && tmp_be != be ) {
 291                         fprintf( stderr, "%s: line %d: suffix already in use"
 292                                        " by another backend in"
 293                                        " \"suffixMassage <suffix>"
 294                                        " <massaged suffix>\"\n",
 295                                 fname, lineno );
 296                         free( nvnc.bv_val );
 297                         free( pvnc.bv_val );
 298                         return( 1 );
 299                 }
 300
 301                 ber_str2bv( argv[2], 0, 0, &brnc );
 302                 if ( dnPrettyNormal( NULL, &brnc, &prnc, &nrnc, NULL ) != LDAP_SUCCESS ) {
 303                         fprintf( stderr, "%s: line %d: suffix DN %s is invalid\n",
 304                                 fname, lineno, brnc.bv_val );
 305                         free( nvnc.bv_val );
 306                         free( pvnc.bv_val );
 307                         return( 1 );
 308                 }
 309
 310 #if 0
 311                 tmp_be = select_backend( &nrnc, 0, 0 );
 312                 if ( tmp_be != NULL ) {
 313                         fprintf( stderr, "%s: line %d: massaged suffix"
 314                                        " already in use by another backend in"
 315                                        " \"suffixMassage <suffix>"
 316                                        " <massaged suffix>\"\n",
 317                                 fname, lineno );
 318                         free( nvnc.bv_val );
 319                         free( pvnc.bv_val );
 320                         free( nrnc.bv_val );
 321                         free( prnc.bv_val );
 322                         return( 1 );
 323                 }
 324 #endif
 325
 326 #ifdef ENABLE_REWRITE
 327                 /*
 328                  * The suffix massaging is emulated by means of the
 329                  * rewrite capabilities
 330                  * FIXME: no extra rewrite capabilities should be added
 331                  * to the database
 332                  */
 333                 rc = suffix_massage_config( li->rwmap.rwm_rw,
 334                                 &pvnc, &nvnc, &prnc, &nrnc );
 335                 free( nvnc.bv_val );
 336                 free( pvnc.bv_val );
 337                 free( nrnc.bv_val );
 338                 free( prnc.bv_val );
 339
 340                 return( rc );
 341
 342 #else /* !ENABLE_REWRITE */
 343                 ber_bvarray_add( &li->rwmap.rwm_suffix_massage, &pvnc );
 344                 ber_bvarray_add( &li->rwmap.rwm_suffix_massage, &nvnc );
 345
 346                 ber_bvarray_add( &li->rwmap.rwm_suffix_massage, &prnc );
 347                 ber_bvarray_add( &li->rwmap.rwm_suffix_massage, &nrnc );
 348 #endif /* !ENABLE_REWRITE */
 349
 350         /* rewrite stuff ... */
 351         } else if ( strncasecmp( argv[0], "rewrite", 7 ) == 0 ) {
 352 #ifdef ENABLE_REWRITE
 353                 return rewrite_parse( li->rwmap.rwm_rw,
 354                                 fname, lineno, argc, argv );
 355
 356 #else /* !ENABLE_REWRITE */
 357                 fprintf( stderr, "%s: line %d: rewrite capabilities "
 358                                 "are not enabled\n", fname, lineno );
 359 #endif /* !ENABLE_REWRITE */
 360
 361         /* objectclass/attribute mapping */
 362         } else if ( strcasecmp( argv[0], "map" ) == 0 ) {
 363                 return ldap_back_map_config( &li->rwmap.rwm_oc,
 364                                 &li->rwmap.rwm_at,
 365                                 fname, lineno, argc, argv );
 366
 367         /* anything else */
 368         } else {
 369                 return SLAP_CONF_UNKNOWN;
 370         }
 371         return 0;
 372 }
 373
 374 int
 375 ldap_back_map_config(
 376                 struct ldapmap  *oc_map,
 377                 struct ldapmap  *at_map,
 378                 const char      *fname,
 379                 int             lineno,
 380                 int             argc,
 381                 char            **argv )
 382 {
 383         struct ldapmap          *map;
 384         struct ldapmapping      *mapping;
 385         char                    *src, *dst;
 386         int                     is_oc = 0;
 387
 388         if ( argc < 3 || argc > 4 ) {
 389                 fprintf( stderr,
 390         "%s: line %d: syntax is \"map {objectclass | attribute} [<local> | *] {<foreign> | *}\"\n",
 391                         fname, lineno );
 392                 return 1;
 393         }
 394
 395         if ( strcasecmp( argv[1], "objectclass" ) == 0 ) {
 396                 map = oc_map;
 397                 is_oc = 1;
 398
 399         } else if ( strcasecmp( argv[1], "attribute" ) == 0 ) {
 400                 map = at_map;
 401
 402         } else {
 403                 fprintf( stderr, "%s: line %d: syntax is "
 404                         "\"map {objectclass | attribute} [<local> | *] "
 405                         "{<foreign> | *}\"\n",
 406                         fname, lineno );
 407                 return 1;
 408         }
 409
 410         if ( strcmp( argv[2], "*" ) == 0 ) {
 411                 if ( argc < 4 || strcmp( argv[3], "*" ) == 0 ) {
 412                         map->drop_missing = ( argc < 4 );
 413                         return 0;
 414                 }
 415                 src = dst = argv[3];
 416
 417         } else if ( argc < 4 ) {
 418                 src = "";
 419                 dst = argv[2];
 420
 421         } else {
 422                 src = argv[2];
 423                 dst = ( strcmp( argv[3], "*" ) == 0 ? src : argv[3] );
 424         }
 425
 426         if ( ( map == at_map )
 427                         && ( strcasecmp( src, "objectclass" ) == 0
 428                         || strcasecmp( dst, "objectclass" ) == 0 ) )
 429         {
 430                 fprintf( stderr,
 431                         "%s: line %d: objectclass attribute cannot be mapped\n",
 432                         fname, lineno );
 433         }
 434
 435         mapping = (struct ldapmapping *)ch_calloc( 2,
 436                 sizeof(struct ldapmapping) );
 437         if ( mapping == NULL ) {
 438                 fprintf( stderr,
 439                         "%s: line %d: out of memory\n",
 440                         fname, lineno );
 441                 return 1;
 442         }
 443         ber_str2bv( src, 0, 1, &mapping->src );
 444         ber_str2bv( dst, 0, 1, &mapping->dst );
 445         mapping[1].src = mapping->dst;
 446         mapping[1].dst = mapping->src;
 447
 448         /*
 449          * schema check
 450          */
 451         if ( is_oc ) {
 452                 if ( src[0] != '\0' ) {
 453                         if ( oc_bvfind( &mapping->src ) == NULL ) {
 454                                 fprintf( stderr,
 455         "%s: line %d: warning, source objectClass '%s' "
 456         "should be defined in schema\n",
 457                                         fname, lineno, src );
 458
 459                                 /*
 460                                  * FIXME: this should become an err
 461                                  */
 462                                 goto error_return;
 463                         }
 464                 }
 465
 466                 if ( oc_bvfind( &mapping->dst ) == NULL ) {
 467                         fprintf( stderr,
 468         "%s: line %d: warning, destination objectClass '%s' "
 469         "is not defined in schema\n",
 470                                 fname, lineno, dst );
 471                 }
 472         } else {
 473                 int                     rc;
 474                 const char              *text = NULL;
 475                 AttributeDescription    *ad = NULL;
 476
 477                 if ( src[0] != '\0' ) {
 478                         rc = slap_bv2ad( &mapping->src, &ad, &text );
 479                         if ( rc != LDAP_SUCCESS ) {
 480                                 fprintf( stderr,
 481         "%s: line %d: warning, source attributeType '%s' "
 482         "should be defined in schema\n",
 483                                         fname, lineno, src );
 484
 485                                 /*
 486                                  * FIXME: this should become an err
 487                                  */
 488                                 goto error_return;
 489                         }
 490
 491                         ad = NULL;
 492                 }
 493
 494                 rc = slap_bv2ad( &mapping->dst, &ad, &text );
 495                 if ( rc != LDAP_SUCCESS ) {
 496                         fprintf( stderr,
 497         "%s: line %d: warning, destination attributeType '%s' "
 498         "is not defined in schema\n",
 499                                 fname, lineno, dst );
 500                 }
 501         }
 502
 503         if ( (src[0] != '\0' && avl_find( map->map, (caddr_t)mapping, mapping_cmp ) != NULL)
 504                         || avl_find( map->remap, (caddr_t)&mapping[1], mapping_cmp ) != NULL)
 505         {
 506                 fprintf( stderr,
 507                         "%s: line %d: duplicate mapping found (ignored)\n",
 508                         fname, lineno );
 509                 goto error_return;
 510         }
 511
 512         if ( src[0] != '\0' ) {
 513                 avl_insert( &map->map, (caddr_t)mapping,
 514                                         mapping_cmp, mapping_dup );
 515         }
 516         avl_insert( &map->remap, (caddr_t)&mapping[1],
 517                                 mapping_cmp, mapping_dup );
 518
 519         return 0;
 520
 521 error_return:;
 522         if ( mapping ) {
 523                 ch_free( mapping->src.bv_val );
 524                 ch_free( mapping->dst.bv_val );
 525                 ch_free( mapping );
 526         }
 527
 528         return 1;
 529 }
 530
 531 static int
 532 ldap_back_exop_whoami(
 533         Operation *op,
 534         SlapReply *rs )
 535 {
 536         struct berval *bv = NULL;
 537
 538         if ( op->oq_extended.rs_reqdata != NULL ) {
 539                 /* no request data should be provided */
 540                 rs->sr_text = "no request data expected";
 541                 return rs->sr_err = LDAP_PROTOCOL_ERROR;
 542         }
 543
 544         rs->sr_err = backend_check_restrictions( op, rs,
 545                         (struct berval *)&slap_EXOP_WHOAMI );
 546         if( rs->sr_err != LDAP_SUCCESS ) return rs->sr_err;
 547
 548         /* if auth'd by back-ldap and request is proxied, forward it */
 549         if ( op->o_conn->c_authz_backend && !strcmp(op->o_conn->c_authz_backend->be_type, "ldap" ) && !dn_match(&op->o_ndn, &op->o_conn->c_ndn)) {
 550                 struct ldapconn *lc;
 551
 552                 LDAPControl c, *ctrls[2] = {NULL, NULL};
 553                 LDAPMessage *res;
 554                 Operation op2 = *op;
 555                 ber_int_t msgid;
 556
 557                 ctrls[0] = &c;
 558                 op2.o_ndn = op->o_conn->c_ndn;
 559                 lc = ldap_back_getconn(&op2, rs);
 560                 if (!lc || !ldap_back_dobind( lc, op, rs )) {
 561                         return -1;
 562                 }
 563                 c.ldctl_oid = LDAP_CONTROL_PROXY_AUTHZ;
 564                 c.ldctl_iscritical = 1;
 565                 c.ldctl_value.bv_val = ch_malloc(op->o_ndn.bv_len+4);
 566                 c.ldctl_value.bv_len = op->o_ndn.bv_len + 3;
 567                 strcpy(c.ldctl_value.bv_val, "dn:");
 568                 strcpy(c.ldctl_value.bv_val+3, op->o_ndn.bv_val);
 569
 570                 rs->sr_err = ldap_whoami(lc->ld, ctrls, NULL, &msgid);
 571                 if (rs->sr_err == LDAP_SUCCESS) {
 572                         if (ldap_result(lc->ld, msgid, 1, NULL, &res) == -1) {
 573                                 ldap_get_option(lc->ld, LDAP_OPT_ERROR_NUMBER,
 574                                         &rs->sr_err);
 575                                 ldap_back_freeconn( op, lc );
 576                                 lc = NULL;
 577
 578                         } else {
 579                                 rs->sr_err = ldap_parse_whoami(lc->ld, res, &bv);
 580                                 ldap_msgfree(res);
 581                         }
 582                 }
 583                 ch_free(c.ldctl_value.bv_val);
 584                 if (rs->sr_err != LDAP_SUCCESS) {
 585                         rs->sr_err = slap_map_api2result( rs );
 586                 }
 587         } else {
 588         /* else just do the same as before */
 589                 bv = (struct berval *) ch_malloc( sizeof(struct berval) );
 590                 if( op->o_dn.bv_len ) {
 591                         bv->bv_len = op->o_dn.bv_len + sizeof("dn:") - 1;
 592                         bv->bv_val = ch_malloc( bv->bv_len + 1 );
 593                         AC_MEMCPY( bv->bv_val, "dn:", sizeof("dn:") - 1 );
 594                         AC_MEMCPY( &bv->bv_val[sizeof("dn:") - 1], op->o_dn.bv_val,
 595                                 op->o_dn.bv_len );
 596                         bv->bv_val[bv->bv_len] = '\0';
 597                 } else {
 598                         bv->bv_len = 0;
 599                         bv->bv_val = NULL;
 600                 }
 601         }
 602
 603         rs->sr_rspdata = bv;
 604         return rs->sr_err;
 605 }
 606
 607
 608 #ifdef ENABLE_REWRITE
 609 static char *
 610 suffix_massage_regexize( const char *s )
 611 {
 612         char *res, *ptr;
 613         const char *p, *r;
 614         int i;
 615
 616         for ( i = 0, p = s;
 617                         ( r = strchr( p, ',' ) ) != NULL;
 618                         p = r + 1, i++ )
 619                 ;
 620
 621         res = ch_calloc( sizeof( char ), strlen( s ) + 4 + 4*i + 1 );
 622
 623         ptr = lutil_strcopy( res, "(.*)" );
 624         for ( i = 0, p = s;
 625                         ( r = strchr( p, ',' ) ) != NULL;
 626                         p = r + 1 , i++ ) {
 627                 ptr = lutil_strncopy( ptr, p, r - p + 1 );
 628                 ptr = lutil_strcopy( ptr, "[ ]?" );
 629
 630                 if ( r[ 1 ] == ' ' ) {
 631                         r++;
 632                 }
 633         }
 634         lutil_strcopy( ptr, p );
 635
 636         return res;
 637 }
 638
 639 static char *
 640 suffix_massage_patternize( const char *s )
 641 {
 642         ber_len_t       len;
 643         char            *res;
 644
 645         len = strlen( s );
 646
 647         res = ch_calloc( sizeof( char ), len + sizeof( "%1" ) );
 648         if ( res == NULL ) {
 649                 return NULL;
 650         }
 651
 652         strcpy( res, "%1" );
 653         strcpy( res + sizeof( "%1" ) - 1, s );
 654
 655         return res;
 656 }
 657
 658 int
 659 suffix_massage_config(
 660                 struct rewrite_info *info,
 661                 struct berval *pvnc,
 662                 struct berval *nvnc,
 663                 struct berval *prnc,
 664                 struct berval *nrnc
 665 )
 666 {
 667         char *rargv[ 5 ];
 668         int line = 0;
 669
 670         rargv[ 0 ] = "rewriteEngine";
 671         rargv[ 1 ] = "on";
 672         rargv[ 2 ] = NULL;
 673         rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
 674
 675         rargv[ 0 ] = "rewriteContext";
 676         rargv[ 1 ] = "default";
 677         rargv[ 2 ] = NULL;
 678         rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
 679
 680         rargv[ 0 ] = "rewriteRule";
 681         rargv[ 1 ] = suffix_massage_regexize( pvnc->bv_val );
 682         rargv[ 2 ] = suffix_massage_patternize( prnc->bv_val );
 683         rargv[ 3 ] = ":";
 684         rargv[ 4 ] = NULL;
 685         rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
 686         ch_free( rargv[ 1 ] );
 687         ch_free( rargv[ 2 ] );
 688
 689         rargv[ 0 ] = "rewriteContext";
 690         rargv[ 1 ] = "searchResult";
 691         rargv[ 2 ] = NULL;
 692         rewrite_parse( info, "<suffix massage>", ++line, 2, rargv );
 693
 694         rargv[ 0 ] = "rewriteRule";
 695         rargv[ 1 ] = suffix_massage_regexize( prnc->bv_val );
 696         rargv[ 2 ] = suffix_massage_patternize( pvnc->bv_val );
 697         rargv[ 3 ] = ":";
 698         rargv[ 4 ] = NULL;
 699         rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
 700         ch_free( rargv[ 1 ] );
 701         ch_free( rargv[ 2 ] );
 702
 703         rargv[ 0 ] = "rewriteContext";
 704         rargv[ 1 ] = "matchedDN";
 705         rargv[ 2 ] = "alias";
 706         rargv[ 3 ] = "searchResult";
 707         rargv[ 4 ] = NULL;
 708         rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
 709
 710         rargv[ 0 ] = "rewriteContext";
 711         rargv[ 1 ] = "searchAttrDN";
 712         rargv[ 2 ] = "alias";
 713         rargv[ 3 ] = "searchResult";
 714         rargv[ 4 ] = NULL;
 715         rewrite_parse( info, "<suffix massage>", ++line, 4, rargv );
 716
 717         return 0;
 718 }
 719 #endif /* ENABLE_REWRITE */
 720
 721 #ifdef LDAP_BACK_PROXY_AUTHZ
 722 static int
 723 parse_idassert(
 724     BackendDB   *be,
 725     const char  *fname,
 726     int         lineno,
 727     int         argc,
 728     char        **argv
 729 )
 730 {
 731         struct ldapinfo *li = (struct ldapinfo *) be->be_private;
 732
 733         /* identity assertion mode */
 734         if ( strcasecmp( argv[0], "idassert-mode" ) == 0 ) {
 735                 if ( argc != 2 ) {
 736                         Debug( LDAP_DEBUG_ANY,
 737                                 "%s: line %d: illegal args number %d in \"idassert-mode <args>\" line.\n",
 738                                 fname, lineno, argc );
 739                         return 1;
 740                 }
 741
 742                 if ( strcasecmp( argv[1], "legacy" ) == 0 ) {
 743                         /* will proxyAuthz as client's identity only if bound */
 744                         li->idassert_mode = LDAP_BACK_IDASSERT_LEGACY;
 745
 746                 } else if ( strcasecmp( argv[1], "self" ) == 0 ) {
 747                         /* will proxyAuthz as client's identity */
 748                         li->idassert_mode = LDAP_BACK_IDASSERT_SELF;
 749
 750                 } else if ( strcasecmp( argv[1], "anonymous" ) == 0 ) {
 751                         /* will proxyAuthz as anonymous */
 752                         li->idassert_mode = LDAP_BACK_IDASSERT_ANONYMOUS;
 753
 754                 } else if ( strcasecmp( argv[1], "none" ) == 0 ) {
 755                         /* will not proxyAuthz */
 756                         li->idassert_mode = LDAP_BACK_IDASSERT_NOASSERT;
 757
 758                 } else {
 759                         struct berval   id;
 760                         int             rc;
 761
 762                         /* will proxyAuthz as argv[1] */
 763                         ber_str2bv( argv[1], 0, 0, &id );
 764
 765                         if ( strncasecmp( id.bv_val, "u:", STRLENOF( "u:" ) ) == 0 ) {
 766                                 /* force lowercase... */
 767                                 id.bv_val[0] = 'u';
 768                                 li->idassert_mode = LDAP_BACK_IDASSERT_OTHERID;
 769                                 ber_dupbv( &li->idassert_authzID, &id );
 770
 771                         } else {
 772                                 struct berval   dn;
 773
 774                                 /* default is DN? */
 775                                 if ( strncasecmp( id.bv_val, "dn:", STRLENOF( "dn:" ) ) == 0 ) {
 776                                         id.bv_val += STRLENOF( "dn:" );
 777                                         id.bv_len -= STRLENOF( "dn:" );
 778                                 }
 779
 780                                 rc = dnNormalize( 0, NULL, NULL, &id, &dn, NULL );
 781                                 if ( rc != LDAP_SUCCESS ) {
 782                                         Debug( LDAP_DEBUG_ANY,
 783                                                 "%s: line %d: idassert ID \"%s\" is not a valid DN\n",
 784                                                 fname, lineno, argv[1] );
 785                                         return 1;
 786                                 }
 787
 788                                 li->idassert_authzID.bv_len = STRLENOF( "dn:" ) + dn.bv_len;
 789                                 li->idassert_authzID.bv_val = ch_malloc( li->idassert_authzID.bv_len + 1 );
 790                                 AC_MEMCPY( li->idassert_authzID.bv_val, "dn:", STRLENOF( "dn:" ) );
 791                                 AC_MEMCPY( &li->idassert_authzID.bv_val[ STRLENOF( "dn:" ) ], dn.bv_val, dn.bv_len + 1 );
 792                                 ch_free( dn.bv_val );
 793
 794                                 li->idassert_mode = LDAP_BACK_IDASSERT_OTHERDN;
 795                         }
 796                 }
 797
 798         /* name to use for proxyAuthz propagation */
 799         } else if ( strcasecmp( argv[0], "idassert-authcdn" ) == 0
 800                         || strcasecmp( argv[0], "proxyauthzdn" ) == 0 )
 801         {
 802                 struct berval   dn;
 803                 int             rc;
 804
 805                 /* FIXME: "proxyauthzdn" is no longer documented, and
 806                  * temporarily supported for backwards compatibility */
 807
 808                 if ( argc != 2 ) {
 809                         fprintf( stderr,
 810         "%s: line %d: missing name in \"%s <name>\" line\n",
 811                             fname, lineno, argv[0] );
 812                         return( 1 );
 813                 }
 814
 815                 if ( !BER_BVISNULL( &li->idassert_authcDN ) ) {
 816                         fprintf( stderr, "%s: line %d: "
 817                                         "authcDN already defined; replacing...\n",
 818                                         fname, lineno );
 819                         ch_free( li->idassert_authcDN.bv_val );
 820                 }
 821
 822                 ber_str2bv( argv[1], 0, 0, &dn );
 823                 rc = dnNormalize( 0, NULL, NULL, &dn, &li->idassert_authcDN, NULL );
 824                 if ( rc != LDAP_SUCCESS ) {
 825                         Debug( LDAP_DEBUG_ANY,
 826                                 "%s: line %d: idassert ID \"%s\" is not a valid DN\n",
 827                                 fname, lineno, argv[1] );
 828                         return 1;
 829                 }
 830
 831         /* password to use for proxyAuthz propagation */
 832         } else if ( strcasecmp( argv[0], "idassert-passwd" ) == 0
 833                         || strcasecmp( argv[0], "proxyauthzpw" ) == 0 )
 834         {
 835                 /* FIXME: "proxyauthzpw" is no longer documented, and
 836                  * temporarily supported for backwards compatibility */
 837
 838                 if ( argc != 2 ) {
 839                         fprintf( stderr,
 840         "%s: line %d: missing password in \"%s <password>\" line\n",
 841                             fname, lineno, argv[0] );
 842                         return( 1 );
 843                 }
 844
 845                 if ( !BER_BVISNULL( &li->idassert_passwd ) ) {
 846                         fprintf( stderr, "%s: line %d: "
 847                                         "passwd already defined; replacing...\n",
 848                                         fname, lineno );
 849                         ch_free( li->idassert_passwd.bv_val );
 850                 }
 851
 852                 ber_str2bv( argv[1], 0, 1, &li->idassert_passwd );
 853
 854         /* rules to accept identity assertion... */
 855         } else if ( strcasecmp( argv[0], "idassert-authzFrom" ) == 0 ) {
 856                 struct berval   rule;
 857
 858                 ber_str2bv( argv[1], 0, 1, &rule );
 859
 860                 ber_bvarray_add( &li->idassert_authz, &rule );
 861
 862         } else if ( strcasecmp( argv[0], "idassert-method" ) == 0 ) {
 863                 if ( argc < 2 ) {
 864                         fprintf( stderr,
 865         "%s: line %d: missing method in \"%s <method>\" line\n",
 866                             fname, lineno, argv[0] );
 867                         return( 1 );
 868                 }
 869
 870                 if ( strcasecmp( argv[1], "none" ) == 0 ) {
 871                         /* FIXME: is this useful? */
 872                         li->idassert_authmethod = LDAP_AUTH_NONE;
 873
 874                         if ( argc != 2 ) {
 875                                 fprintf( stderr,
 876         "%s: line %d: trailing args in \"%s %s ...\" line ignored\"\n",
 877                                         fname, lineno, argv[0], argv[1] );
 878                         }
 879
 880                 } else if ( strcasecmp( argv[1], "simple" ) == 0 ) {
 881                         li->idassert_authmethod = LDAP_AUTH_SIMPLE;
 882
 883                         if ( argc != 2 ) {
 884                                 fprintf( stderr,
 885         "%s: line %d: trailing args in \"%s %s ...\" line ignored\"\n",
 886                                         fname, lineno, argv[0], argv[1] );
 887                         }
 888
 889                 } else if ( strcasecmp( argv[1], "sasl" ) == 0 ) {
 890 #ifdef HAVE_CYRUS_SASL
 891                         int     arg;
 892
 893                         for ( arg = 2; arg < argc; arg++ ) {
 894                                 if ( strncasecmp( argv[arg], "mech=", STRLENOF( "mech=" ) ) == 0 ) {
 895                                         char    *val = argv[arg] + STRLENOF( "mech=" );
 896
 897                                         if ( !BER_BVISNULL( &li->idassert_sasl_mech ) ) {
 898                                                 fprintf( stderr, "%s: line %d: "
 899                                                                 "SASL mech already defined; replacing...\n",
 900                                                                 fname, lineno );
 901                                                 ch_free( li->idassert_sasl_mech.bv_val );
 902                                         }
 903                                         ber_str2bv( val, 0, 1, &li->idassert_sasl_mech );
 904
 905                                 } else if ( strncasecmp( argv[arg], "realm=", STRLENOF( "realm=" ) ) == 0 ) {
 906                                         char    *val = argv[arg] + STRLENOF( "realm=" );
 907
 908                                         if ( !BER_BVISNULL( &li->idassert_sasl_realm ) ) {
 909                                                 fprintf( stderr, "%s: line %d: "
 910                                                                 "SASL realm already defined; replacing...\n",
 911                                                                 fname, lineno );
 912                                                 ch_free( li->idassert_sasl_realm.bv_val );
 913                                         }
 914                                         ber_str2bv( val, 0, 1, &li->idassert_sasl_realm );
 915
 916                                 } else if ( strncasecmp( argv[arg], "authcdn=", STRLENOF( "authcdn=" ) ) == 0 ) {
 917                                         char            *val = argv[arg] + STRLENOF( "authcdn=" );
 918                                         struct berval   dn;
 919                                         int             rc;
 920
 921                                         if ( !BER_BVISNULL( &li->idassert_authcDN ) ) {
 922                                                 fprintf( stderr, "%s: line %d: "
 923                                                                 "SASL authcDN already defined; replacing...\n",
 924                                                                 fname, lineno );
 925                                                 ch_free( li->idassert_authcDN.bv_val );
 926                                         }
 927                                         if ( strncasecmp( argv[arg], "dn:", STRLENOF( "dn:" ) ) == 0 ) {
 928                                                 val += STRLENOF( "dn:" );
 929                                         }
 930
 931                                         ber_str2bv( val, 0, 0, &dn );
 932                                         rc = dnNormalize( 0, NULL, NULL, &dn, &li->idassert_authcDN, NULL );
 933                                         if ( rc != LDAP_SUCCESS ) {
 934                                                 Debug( LDAP_DEBUG_ANY,
 935                                                         "%s: line %d: SASL authcdn \"%s\" is not a valid DN\n",
 936                                                         fname, lineno, val );
 937                                                 return 1;
 938                                         }
 939
 940                                 } else if ( strncasecmp( argv[arg], "authcid=", STRLENOF( "authcid=" ) ) == 0 ) {
 941                                         char    *val = argv[arg] + STRLENOF( "authcid=" );
 942
 943                                         if ( !BER_BVISNULL( &li->idassert_authcID ) ) {
 944                                                 fprintf( stderr, "%s: line %d: "
 945                                                                 "SASL authcID already defined; replacing...\n",
 946                                                                 fname, lineno );
 947                                                 ch_free( li->idassert_authcID.bv_val );
 948                                         }
 949                                         if ( strncasecmp( argv[arg], "u:", STRLENOF( "u:" ) ) == 0 ) {
 950                                                 val += STRLENOF( "u:" );
 951                                         }
 952                                         ber_str2bv( val, 0, 1, &li->idassert_authcID );
 953
 954                                 } else if ( strncasecmp( argv[arg], "cred=", STRLENOF( "cred=" ) ) == 0 ) {
 955                                         char    *val = argv[arg] + STRLENOF( "cred=" );
 956
 957                                         if ( !BER_BVISNULL( &li->idassert_passwd ) ) {
 958                                                 fprintf( stderr, "%s: line %d: "
 959                                                                 "SASL cred already defined; replacing...\n",
 960                                                                 fname, lineno );
 961                                                 ch_free( li->idassert_passwd.bv_val );
 962                                         }
 963                                         ber_str2bv( val, 0, 1, &li->idassert_passwd );
 964
 965                                 } else if ( strncasecmp( argv[arg], "authz=", STRLENOF( "authz=" ) ) == 0 ) {
 966                                         char    *val = argv[arg] + STRLENOF( "authz=" );
 967
 968                                         if ( strcasecmp( val, "proxyauthz" ) == 0 ) {
 969                                                 li->idassert_flags &= ~LDAP_BACK_AUTH_NATIVE_AUTHZ;
 970
 971                                         } else if ( strcasecmp( val, "native" ) == 0 ) {
 972                                                 li->idassert_flags |= LDAP_BACK_AUTH_NATIVE_AUTHZ;
 973
 974                                         } else {
 975                                                 fprintf( stderr, "%s: line %s: "
 976                                                         "unknown authz mode \"%s\"\n",
 977                                                         fname, lineno, val );
 978                                                 return 1;
 979                                         }
 980
 981                                 } else {
 982                                         fprintf( stderr, "%s: line %d: "
 983                                                         "unknown SASL parameter %s\n",
 984                                                         fname, lineno, argv[arg] );
 985                                         return 1;
 986                                 }
 987                         }
 988
 989                         li->idassert_authmethod = LDAP_AUTH_SASL;
 990
 991 #else /* !HAVE_CYRUS_SASL */
 992                         fprintf( stderr, "%s: line %d: "
 993                                         "compile --with-cyrus-sasl to enable SASL auth\n",
 994                                         fname, lineno );
 995                         return 1;
 996 #endif /* !HAVE_CYRUS_SASL */
 997
 998                 } else {
 999                         fprintf( stderr, "%s: line %d: "
1000                                         "unhandled idassert-method method %s\n",
1001                                         fname, lineno, argv[1] );
1002                         return 1;
1003                 }
1004
1005         } else {
1006                 return SLAP_CONF_UNKNOWN;
1007         }
1008
1009         return 0;
1010 }
1011 #endif /* LDAP_BACK_PROXY_AUTHZ */