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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1999-2003 The OpenLDAP Foundation.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms are permitted only
   7  * as authorized by the OpenLDAP Public License.  A copy of this
   8  * license is available at http://www.OpenLDAP.org/license.html or
   9  * in file LICENSE in the top-level directory of the distribution.
  10  */
  11 #include "portable.h"
  12
  13 #include <stdio.h>
  14
  15 #include <ac/string.h>
  16 #include <ac/socket.h>
  17
  18 #include "slap.h"
  19
  20 #include "../../libraries/liblber/lber-int.h"
  21
  22 static SLAP_CTRL_PARSE_FN parseProxyAuthz;
  23 static SLAP_CTRL_PARSE_FN parseManageDSAit;
  24 static SLAP_CTRL_PARSE_FN parseNoOp;
  25 static SLAP_CTRL_PARSE_FN parsePagedResults;
  26 static SLAP_CTRL_PARSE_FN parseValuesReturnFilter;
  27 static SLAP_CTRL_PARSE_FN parsePermissiveModify;
  28 static SLAP_CTRL_PARSE_FN parseDomainScope;
  29
  30 #ifdef LDAP_CONTROL_SUBENTRIES
  31 static SLAP_CTRL_PARSE_FN parseSubentries;
  32 #endif
  33 #ifdef LDAP_CLIENT_UPDATE
  34 static SLAP_CTRL_PARSE_FN parseClientUpdate;
  35 #endif
  36 #ifdef LDAP_SYNC
  37 static SLAP_CTRL_PARSE_FN parseLdupSync;
  38 #endif
  39
  40 #undef sc_mask /* avoid conflict with Irix 6.5 <sys/signal.h> */
  41
  42 static char *proxy_authz_extops[] = {
  43         LDAP_EXOP_MODIFY_PASSWD,
  44         LDAP_EXOP_X_WHO_AM_I,
  45         NULL
  46 };
  47
  48 struct slap_control {
  49         /*
  50          * Control OID
  51          */
  52         char *sc_oid;
  53
  54         /*
  55          * Operations supported by control
  56          */
  57         slap_mask_t sc_mask;
  58
  59         /*
  60          * Extended operations supported by control
  61          */
  62         char **sc_extendedops;
  63
  64         /*
  65          * Control parsing callback
  66          */
  67         SLAP_CTRL_PARSE_FN *sc_parse;
  68
  69         LDAP_SLIST_ENTRY(slap_control) sc_next;
  70 };
  71
  72 static LDAP_SLIST_HEAD(ControlsList, slap_control) controls_list
  73         = LDAP_SLIST_HEAD_INITIALIZER(&controls_list);
  74
  75 /*
  76  * all known request control OIDs should be added to this list
  77  */
  78 char **slap_known_controls = NULL;
  79
  80 static struct slap_control control_defs[] = {
  81         { LDAP_CONTROL_VALUESRETURNFILTER,
  82                 SLAP_CTRL_SEARCH, NULL,
  83                 parseValuesReturnFilter, LDAP_SLIST_NEXT_INITIALIZER(next) },
  84 #ifdef LDAP_CONTROL_PAGEDRESULTS
  85         { LDAP_CONTROL_PAGEDRESULTS,
  86                 SLAP_CTRL_SEARCH, NULL,
  87                 parsePagedResults, LDAP_SLIST_NEXT_INITIALIZER(next) },
  88 #endif
  89 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
  90         { LDAP_CONTROL_X_DOMAIN_SCOPE,
  91                 SLAP_CTRL_FRONTEND|SLAP_CTRL_SEARCH, NULL,
  92                 parseDomainScope, LDAP_SLIST_NEXT_INITIALIZER(next) },
  93 #endif
  94 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
  95         { LDAP_CONTROL_X_PERMISSIVE_MODIFY,
  96                 SLAP_CTRL_MODIFY, NULL,
  97                 parsePermissiveModify, LDAP_SLIST_NEXT_INITIALIZER(next) },
  98 #endif
  99 #ifdef LDAP_CONTROL_SUBENTRIES
 100         { LDAP_CONTROL_SUBENTRIES,
 101                 SLAP_CTRL_SEARCH, NULL,
 102                 parseSubentries, LDAP_SLIST_NEXT_INITIALIZER(next) },
 103 #endif
 104         { LDAP_CONTROL_NOOP,
 105                 SLAP_CTRL_ACCESS, NULL,
 106                 parseNoOp, LDAP_SLIST_NEXT_INITIALIZER(next) },
 107 #ifdef LDAP_CLIENT_UPDATE
 108         { LDAP_CONTROL_CLIENT_UPDATE,
 109                 SLAP_CTRL_SEARCH, NULL,
 110                 parseClientUpdate, LDAP_SLIST_NEXT_INITIALIZER(next) },
 111 #endif
 112 #ifdef LDAP_SYNC
 113         { LDAP_CONTROL_SYNC,
 114                 SLAP_CTRL_SEARCH, NULL,
 115                 parseLdupSync, LDAP_SLIST_NEXT_INITIALIZER(next) },
 116 #endif
 117         { LDAP_CONTROL_MANAGEDSAIT,
 118                 SLAP_CTRL_ACCESS, NULL,
 119                 parseManageDSAit, LDAP_SLIST_NEXT_INITIALIZER(next) },
 120         { LDAP_CONTROL_PROXY_AUTHZ,
 121                 SLAP_CTRL_FRONTEND|SLAP_CTRL_ACCESS, proxy_authz_extops,
 122                 parseProxyAuthz, LDAP_SLIST_NEXT_INITIALIZER(next) },
 123         { NULL, 0, NULL, 0, LDAP_SLIST_NEXT_INITIALIZER(next) }
 124 };
 125
 126 /*
 127  * Register a supported control.
 128  *
 129  * This can be called by an OpenLDAP plugin or, indirectly, by a
 130  * SLAPI plugin calling slapi_register_supported_control().
 131  */
 132 int
 133 register_supported_control(const char *controloid,
 134         slap_mask_t controlmask,
 135         char **controlexops,
 136         SLAP_CTRL_PARSE_FN *controlparsefn)
 137 {
 138         struct slap_control *sc;
 139         int i;
 140
 141         if ( controloid == NULL ) {
 142                 return LDAP_PARAM_ERROR;
 143         }
 144
 145         sc = (struct slap_control *)SLAP_MALLOC( sizeof( *sc ) );
 146         if ( sc == NULL ) {
 147                 return LDAP_NO_MEMORY;
 148         }
 149         sc->sc_oid = ch_strdup( controloid );
 150         sc->sc_mask = controlmask;
 151         if ( controlexops != NULL ) {
 152                 sc->sc_extendedops = ldap_charray_dup( controlexops );
 153                 if ( sc->sc_extendedops == NULL ) {
 154                         ch_free( sc );
 155                         return LDAP_NO_MEMORY;
 156                 }
 157         } else {
 158                 sc->sc_extendedops = NULL;
 159         }
 160         sc->sc_parse = controlparsefn;
 161
 162         /* Update slap_known_controls, too. */
 163         if ( slap_known_controls == NULL ) {
 164                 slap_known_controls = (char **)SLAP_MALLOC( 2 * sizeof(char *) );
 165                 if ( slap_known_controls == NULL ) {
 166                         if ( sc->sc_extendedops != NULL ) ldap_charray_free( sc->sc_extendedops );
 167                         ch_free( sc );
 168                         return LDAP_NO_MEMORY;
 169                 }
 170                 slap_known_controls[0] = ch_strdup( sc->sc_oid );
 171                 slap_known_controls[1] = NULL;
 172         } else {
 173                 for ( i = 0; slap_known_controls[i] != NULL; i++ )
 174                         ;
 175                 slap_known_controls = (char **)SLAP_REALLOC( slap_known_controls, (i + 2) * sizeof(char *) );
 176                 if ( slap_known_controls == NULL ) {
 177                         if ( sc->sc_extendedops != NULL ) ldap_charray_free( sc->sc_extendedops );
 178                         ch_free( sc );
 179                         return LDAP_NO_MEMORY;
 180                 }
 181                 slap_known_controls[i++] = ch_strdup( sc->sc_oid );
 182                 slap_known_controls[i] = NULL;
 183         }
 184
 185         LDAP_SLIST_NEXT( sc, sc_next ) = NULL;
 186         LDAP_SLIST_INSERT_HEAD( &controls_list, sc, sc_next );
 187
 188         return LDAP_SUCCESS;
 189 }
 190
 191 /*
 192  * One-time initialization of internal controls.
 193  */
 194 int
 195 slap_controls_init( void )
 196 {
 197         int i, rc;
 198         struct slap_control *sc;
 199
 200         rc = LDAP_SUCCESS;
 201
 202         for ( i = 0; control_defs[i].sc_oid != NULL; i++ ) {
 203                 rc = register_supported_control( control_defs[i].sc_oid,
 204                         control_defs[i].sc_mask, control_defs[i].sc_extendedops,
 205                         control_defs[i].sc_parse );
 206                 if ( rc != LDAP_SUCCESS )
 207                         break;
 208         }
 209
 210         return rc;
 211 }
 212
 213 /*
 214  * Free memory associated with list of supported controls.
 215  */
 216 void
 217 controls_destroy( void )
 218 {
 219         struct slap_control *sc;
 220
 221         while ( !LDAP_SLIST_EMPTY(&controls_list) ) {
 222                 sc = LDAP_SLIST_FIRST(&controls_list);
 223                 LDAP_SLIST_REMOVE_HEAD(&controls_list, sc_next);
 224
 225                 ch_free( sc->sc_oid );
 226                 if ( sc->sc_extendedops != NULL ) {
 227                         ldap_charray_free( sc->sc_extendedops );
 228                 }
 229         }
 230 }
 231
 232 /*
 233  * Format the supportedControl attribute of the root DSE,
 234  * detailing which controls are supported by the directory
 235  * server.
 236  */
 237 int
 238 controls_root_dse_info( Entry *e )
 239 {
 240         AttributeDescription *ad_supportedControl
 241                 = slap_schema.si_ad_supportedControl;
 242         struct berval vals[2];
 243         struct slap_control *sc;
 244
 245         vals[1].bv_val = NULL;
 246         vals[1].bv_len = 0;
 247
 248         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 249                 vals[0].bv_val = sc->sc_oid;
 250                 vals[0].bv_len = strlen( sc->sc_oid );
 251 #ifdef SLAP_NVALUES
 252                 if ( attr_merge( e, ad_supportedControl, vals, NULL ) )
 253 #else
 254                 if ( attr_merge( e, ad_supportedControl, vals ) )
 255 #endif /* SLAP_NVALUES */
 256                         return -1;
 257         }
 258
 259         return 0;
 260 }
 261
 262 /*
 263  * Return a list of OIDs and operation masks for supported
 264  * controls. Used by SLAPI.
 265  */
 266 int
 267 get_supported_controls(char ***ctrloidsp,
 268         slap_mask_t **ctrlmasks)
 269 {
 270         int i, n;
 271         char **oids;
 272         slap_mask_t *masks;
 273         int rc;
 274         struct slap_control *sc;
 275
 276         n = 0;
 277
 278         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 279                 n++;
 280         }
 281
 282         if ( n == 0 ) {
 283                 *ctrloidsp = NULL;
 284                 *ctrlmasks = NULL;
 285                 return LDAP_SUCCESS;
 286         }
 287
 288         oids = (char **)SLAP_MALLOC( (n + 1) * sizeof(char *) );
 289         if ( oids == NULL ) {
 290                 return LDAP_NO_MEMORY;
 291         }
 292         masks = (slap_mask_t *)SLAP_MALLOC( (n + 1) * sizeof(slap_mask_t) );
 293         if  ( masks == NULL ) {
 294                 ch_free( oids );
 295                 return LDAP_NO_MEMORY;
 296         }
 297
 298         n = 0;
 299
 300         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 301                 oids[n] = ch_strdup( sc->sc_oid );
 302                 masks[n] = sc->sc_mask;
 303                 n++;
 304         }
 305         oids[n] = NULL;
 306         masks[n] = 0;
 307
 308         *ctrloidsp = oids;
 309         *ctrlmasks = masks;
 310
 311         return LDAP_SUCCESS;
 312 }
 313
 314 /*
 315  * Find a control given its OID.
 316  */
 317 static struct slap_control *
 318 find_ctrl( const char *oid )
 319 {
 320         struct slap_control *sc;
 321
 322         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 323                 if ( strcmp( oid, sc->sc_oid ) == 0 ) {
 324                         return sc;
 325                 }
 326         }
 327
 328         return NULL;
 329 }
 330
 331 int get_ctrls(
 332         Connection *conn,
 333         Operation *op,
 334         int sendres )
 335 {
 336         int nctrls = 0;
 337         ber_tag_t tag;
 338         ber_len_t len;
 339         char *opaque;
 340         BerElement *ber = op->o_ber;
 341         struct slap_control *sc;
 342         int rc = LDAP_SUCCESS;
 343         const char *errmsg = NULL;
 344
 345         len = ber_pvt_ber_remaining(ber);
 346
 347         if( len == 0) {
 348                 /* no controls */
 349                 rc = LDAP_SUCCESS;
 350                 return rc;
 351         }
 352
 353         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 354                 if( tag == LBER_ERROR ) {
 355                         rc = SLAPD_DISCONNECT;
 356                         errmsg = "unexpected data in PDU";
 357                 }
 358
 359                 goto return_results;
 360         }
 361
 362 #ifdef NEW_LOGGING
 363         LDAP_LOG( OPERATION, ENTRY,
 364                 "get_ctrls: conn %lu\n", conn->c_connid, 0, 0 );
 365 #else
 366         Debug( LDAP_DEBUG_TRACE,
 367                 "=> get_ctrls\n", 0, 0, 0 );
 368 #endif
 369
 370         if( op->o_protocol < LDAP_VERSION3 ) {
 371                 rc = SLAPD_DISCONNECT;
 372                 errmsg = "controls require LDAPv3";
 373                 goto return_results;
 374         }
 375
 376         /* one for first control, one for termination */
 377         op->o_ctrls = ch_malloc( 2 * sizeof(LDAPControl *) );
 378
 379 #if 0
 380         if( op->ctrls == NULL ) {
 381                 rc = LDAP_NO_MEMORY;
 382                 errmsg = "no memory";
 383                 goto return_results;
 384         }
 385 #endif
 386
 387         op->o_ctrls[nctrls] = NULL;
 388
 389         /* step through each element */
 390         for( tag = ber_first_element( ber, &len, &opaque );
 391                 tag != LBER_ERROR;
 392                 tag = ber_next_element( ber, &len, opaque ) )
 393         {
 394                 LDAPControl *c;
 395                 LDAPControl **tctrls;
 396
 397                 c = ch_calloc( 1, sizeof(LDAPControl) );
 398
 399 #if 0
 400                 if( c == NULL ) {
 401                         ldap_controls_free(op->o_ctrls);
 402                         op->o_ctrls = NULL;
 403
 404                         rc = LDAP_NO_MEMORY;
 405                         errmsg = "no memory";
 406                         goto return_results;
 407                 }
 408 #endif
 409
 410                 /* allocate pointer space for current controls (nctrls)
 411                  * + this control + extra NULL
 412                  */
 413                 tctrls = ch_realloc( op->o_ctrls,
 414                         (nctrls+2) * sizeof(LDAPControl *));
 415
 416 #if 0
 417                 if( tctrls == NULL ) {
 418                         ch_free( c );
 419                         ldap_controls_free(op->o_ctrls);
 420                         op->o_ctrls = NULL;
 421
 422                         rc = LDAP_NO_MEMORY;
 423                         errmsg = "no memory";
 424                         goto return_results;
 425                 }
 426 #endif
 427                 op->o_ctrls = tctrls;
 428
 429                 op->o_ctrls[nctrls++] = c;
 430                 op->o_ctrls[nctrls] = NULL;
 431
 432                 tag = ber_scanf( ber, "{a" /*}*/, &c->ldctl_oid );
 433
 434                 if( tag == LBER_ERROR ) {
 435 #ifdef NEW_LOGGING
 436                         LDAP_LOG( OPERATION, INFO, "get_ctrls: conn %lu get OID failed.\n",
 437                                 conn->c_connid, 0, 0 );
 438 #else
 439                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 440                                 0, 0, 0 );
 441 #endif
 442
 443                         ldap_controls_free( op->o_ctrls );
 444                         op->o_ctrls = NULL;
 445                         rc = SLAPD_DISCONNECT;
 446                         errmsg = "decoding controls error";
 447                         goto return_results;
 448
 449                 } else if( c->ldctl_oid == NULL ) {
 450 #ifdef NEW_LOGGING
 451                         LDAP_LOG( OPERATION, INFO,
 452                                 "get_ctrls: conn %lu got emtpy OID.\n",
 453                                 conn->c_connid, 0, 0 );
 454 #else
 455                         Debug( LDAP_DEBUG_TRACE,
 456                                 "get_ctrls: conn %lu got emtpy OID.\n",
 457                                 conn->c_connid, 0, 0 );
 458 #endif
 459
 460                         ldap_controls_free( op->o_ctrls );
 461                         op->o_ctrls = NULL;
 462                         rc = LDAP_PROTOCOL_ERROR;
 463                         errmsg = "OID field is empty";
 464                         goto return_results;
 465                 }
 466
 467                 tag = ber_peek_tag( ber, &len );
 468
 469                 if( tag == LBER_BOOLEAN ) {
 470                         ber_int_t crit;
 471                         tag = ber_scanf( ber, "b", &crit );
 472
 473                         if( tag == LBER_ERROR ) {
 474 #ifdef NEW_LOGGING
 475                                 LDAP_LOG( OPERATION, INFO,
 476                                         "get_ctrls: conn %lu get crit failed.\n",
 477                                         conn->c_connid, 0, 0 );
 478 #else
 479                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 480                                         0, 0, 0 );
 481 #endif
 482                                 ldap_controls_free( op->o_ctrls );
 483                                 op->o_ctrls = NULL;
 484                                 rc = SLAPD_DISCONNECT;
 485                                 errmsg = "decoding controls error";
 486                                 goto return_results;
 487                         }
 488
 489                         c->ldctl_iscritical = (crit != 0);
 490                         tag = ber_peek_tag( ber, &len );
 491                 }
 492
 493                 if( tag == LBER_OCTETSTRING ) {
 494                         tag = ber_scanf( ber, "o", &c->ldctl_value );
 495
 496                         if( tag == LBER_ERROR ) {
 497 #ifdef NEW_LOGGING
 498                                 LDAP_LOG( OPERATION, INFO, "get_ctrls: conn %lu: "
 499                                         "%s (%scritical): get value failed.\n",
 500                                         conn->c_connid, c->ldctl_oid,
 501                                         c->ldctl_iscritical ? "" : "non" );
 502 #else
 503                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 504                                         "%s (%scritical): get value failed.\n",
 505                                         conn->c_connid, c->ldctl_oid,
 506                                         c->ldctl_iscritical ? "" : "non" );
 507 #endif
 508                                 ldap_controls_free( op->o_ctrls );
 509                                 op->o_ctrls = NULL;
 510                                 rc = SLAPD_DISCONNECT;
 511                                 errmsg = "decoding controls error";
 512                                 goto return_results;
 513                         }
 514                 }
 515
 516 #ifdef NEW_LOGGING
 517                 LDAP_LOG( OPERATION, INFO,
 518                         "get_ctrls: conn %lu oid=\"%s\" (%scritical)\n",
 519                         conn->c_connid, c->ldctl_oid, c->ldctl_iscritical ? "" : "non" );
 520 #else
 521                 Debug( LDAP_DEBUG_TRACE,
 522                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 523                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 524 #endif
 525
 526                 sc = find_ctrl( c->ldctl_oid );
 527                 if( sc != NULL ) {
 528                         /* recognized control */
 529                         slap_mask_t tagmask;
 530                         switch( op->o_tag ) {
 531                         case LDAP_REQ_ADD:
 532                                 tagmask = SLAP_CTRL_ADD;
 533                                 break;
 534                         case LDAP_REQ_BIND:
 535                                 tagmask = SLAP_CTRL_BIND;
 536                                 break;
 537                         case LDAP_REQ_COMPARE:
 538                                 tagmask = SLAP_CTRL_COMPARE;
 539                                 break;
 540                         case LDAP_REQ_DELETE:
 541                                 tagmask = SLAP_CTRL_DELETE;
 542                                 break;
 543                         case LDAP_REQ_MODIFY:
 544                                 tagmask = SLAP_CTRL_MODIFY;
 545                                 break;
 546                         case LDAP_REQ_RENAME:
 547                                 tagmask = SLAP_CTRL_RENAME;
 548                                 break;
 549                         case LDAP_REQ_SEARCH:
 550                                 tagmask = SLAP_CTRL_SEARCH;
 551                                 break;
 552                         case LDAP_REQ_UNBIND:
 553                                 tagmask = SLAP_CTRL_UNBIND;
 554                                 break;
 555                         case LDAP_REQ_ABANDON:
 556                                 tagmask = SLAP_CTRL_ABANDON;
 557                                 break;
 558                         case LDAP_REQ_EXTENDED:
 559                                 tagmask=~0L;
 560                                 assert( op->o_extendedop != NULL );
 561                                 if( sc->sc_extendedops != NULL ) {
 562                                         int i;
 563                                         for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 564                                                 if( strcmp( op->o_extendedop, sc->sc_extendedops[i] )
 565                                                         == 0 )
 566                                                 {
 567                                                         tagmask=0L;
 568                                                         break;
 569                                                 }
 570                                         }
 571                                 }
 572                                 break;
 573                         default:
 574                                 rc = LDAP_OTHER;
 575                                 errmsg = "controls internal error";
 576                                 goto return_results;
 577                         }
 578
 579                         if (( sc->sc_mask & tagmask ) == tagmask ) {
 580                                 /* available extension */
 581
 582                                 if( !sc->sc_parse ) {
 583                                         rc = LDAP_OTHER;
 584                                         errmsg = "not yet implemented";
 585                                         goto return_results;
 586                                 }
 587
 588                                 rc = sc->sc_parse( conn, op, c, &errmsg );
 589
 590                                 if( rc != LDAP_SUCCESS ) goto return_results;
 591
 592                                 if ( sc->sc_mask & SLAP_CTRL_FRONTEND ) {
 593                                         /* kludge to disable backend_control() check */
 594                                         c->ldctl_iscritical = 0;
 595
 596                                 } else if ( tagmask == SLAP_CTRL_SEARCH &&
 597                                         sc->sc_mask & SLAP_CTRL_FRONTEND_SEARCH )
 598                                 {
 599                                         /* kludge to disable backend_control() check */
 600                                         c->ldctl_iscritical = 0;
 601                                 }
 602
 603                         } else if( c->ldctl_iscritical ) {
 604                                 /* unavailable CRITICAL control */
 605                                 rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 606                                 errmsg = "critical extension is unavailable";
 607                                 goto return_results;
 608                         }
 609
 610                 } else if( c->ldctl_iscritical ) {
 611                         /* unrecognized CRITICAL control */
 612                         rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 613                         errmsg = "critical extension is not recognized";
 614                         goto return_results;
 615                 }
 616         }
 617
 618 return_results:
 619 #ifdef NEW_LOGGING
 620         LDAP_LOG( OPERATION, RESULTS,
 621                 "get_ctrls: n=%d rc=%d err=\"%s\"\n",
 622                 nctrls, rc, errmsg ? errmsg : "" );
 623 #else
 624         Debug( LDAP_DEBUG_TRACE,
 625                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 626                 nctrls, rc, errmsg ? errmsg : "");
 627 #endif
 628
 629         if( sendres && rc != LDAP_SUCCESS ) {
 630                 if( rc == SLAPD_DISCONNECT ) {
 631                         send_ldap_disconnect( conn, op, LDAP_PROTOCOL_ERROR, errmsg );
 632                 } else {
 633                         send_ldap_result( conn, op, rc,
 634                                 NULL, errmsg, NULL, NULL );
 635                 }
 636         }
 637
 638         return rc;
 639 }
 640
 641 static int parseManageDSAit (
 642         Connection *conn,
 643         Operation *op,
 644         LDAPControl *ctrl,
 645         const char **text )
 646 {
 647         if ( op->o_managedsait != SLAP_NO_CONTROL ) {
 648                 *text = "manageDSAit control specified multiple times";
 649                 return LDAP_PROTOCOL_ERROR;
 650         }
 651
 652         if ( ctrl->ldctl_value.bv_len ) {
 653                 *text = "manageDSAit control value not empty";
 654                 return LDAP_PROTOCOL_ERROR;
 655         }
 656
 657         op->o_managedsait = ctrl->ldctl_iscritical
 658                 ? SLAP_CRITICAL_CONTROL
 659                 : SLAP_NONCRITICAL_CONTROL;
 660
 661         return LDAP_SUCCESS;
 662 }
 663
 664 static int parseProxyAuthz (
 665         Connection *conn,
 666         Operation *op,
 667         LDAPControl *ctrl,
 668         const char **text )
 669 {
 670         int rc;
 671         struct berval dn = { 0, NULL };
 672
 673         if ( op->o_proxy_authz != SLAP_NO_CONTROL ) {
 674                 *text = "proxy authorization control specified multiple times";
 675                 return LDAP_PROTOCOL_ERROR;
 676         }
 677
 678         op->o_proxy_authz = ctrl->ldctl_iscritical
 679                 ? SLAP_CRITICAL_CONTROL
 680                 : SLAP_NONCRITICAL_CONTROL;
 681
 682 #ifdef NEW_LOGGING
 683         LDAP_LOG( OPERATION, ARGS,
 684                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 685                 conn->c_connid,
 686                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 687                 0 );
 688 #else
 689         Debug( LDAP_DEBUG_ARGS,
 690                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 691                 conn->c_connid,
 692                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 693                 0 );
 694 #endif
 695
 696         if( ctrl->ldctl_value.bv_len == 0 ) {
 697 #ifdef NEW_LOGGING
 698                 LDAP_LOG( OPERATION, RESULTS,
 699                         "parseProxyAuthz: conn=%lu anonymous\n",
 700                         conn->c_connid, 0, 0 );
 701 #else
 702                 Debug( LDAP_DEBUG_TRACE,
 703                         "parseProxyAuthz: conn=%lu anonymous\n",
 704                         conn->c_connid, 0, 0 );
 705 #endif
 706
 707                 /* anonymous */
 708                 free( op->o_dn.bv_val );
 709                 op->o_dn.bv_len = 0;
 710                 op->o_dn.bv_val = ch_strdup( "" );
 711
 712                 free( op->o_ndn.bv_val );
 713                 op->o_ndn.bv_len = 0;
 714                 op->o_ndn.bv_val = ch_strdup( "" );
 715
 716                 return LDAP_SUCCESS;
 717         }
 718
 719         rc = slap_sasl_getdn( conn,
 720                 ctrl->ldctl_value.bv_val, ctrl->ldctl_value.bv_len,
 721                 NULL, &dn, SLAP_GETDN_AUTHZID );
 722
 723         if( rc != LDAP_SUCCESS || !dn.bv_len ) {
 724                 if ( dn.bv_val ) {
 725                         ch_free( dn.bv_val );
 726                 }
 727                 *text = "authzId mapping failed";
 728                 return LDAP_PROXY_AUTHZ_FAILURE;
 729         }
 730
 731 #ifdef NEW_LOGGING
 732         LDAP_LOG( OPERATION, RESULTS,
 733                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 734                 conn->c_connid,
 735                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 736 #else
 737         Debug( LDAP_DEBUG_TRACE,
 738                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 739                 conn->c_connid,
 740                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 741 #endif
 742
 743         rc = slap_sasl_authorized( conn, &op->o_ndn, &dn );
 744
 745         if( rc ) {
 746                 ch_free( dn.bv_val );
 747                 *text = "not authorized to assume identity";
 748                 return LDAP_PROXY_AUTHZ_FAILURE;
 749         }
 750
 751         ch_free( op->o_dn.bv_val );
 752         ch_free( op->o_ndn.bv_val );
 753
 754         op->o_dn.bv_val = NULL;
 755         op->o_ndn = dn;
 756
 757         /*
 758          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 759          * from now on op->o_dn is normalized
 760          */
 761         ber_dupbv( &op->o_dn, &dn );
 762
 763         return LDAP_SUCCESS;
 764 }
 765
 766 static int parseNoOp (
 767         Connection *conn,
 768         Operation *op,
 769         LDAPControl *ctrl,
 770         const char **text )
 771 {
 772         if ( op->o_noop != SLAP_NO_CONTROL ) {
 773                 *text = "noop control specified multiple times";
 774                 return LDAP_PROTOCOL_ERROR;
 775         }
 776
 777         if ( ctrl->ldctl_value.bv_len ) {
 778                 *text = "noop control value not empty";
 779                 return LDAP_PROTOCOL_ERROR;
 780         }
 781
 782         op->o_noop = ctrl->ldctl_iscritical
 783                 ? SLAP_CRITICAL_CONTROL
 784                 : SLAP_NONCRITICAL_CONTROL;
 785
 786         return LDAP_SUCCESS;
 787 }
 788
 789 #ifdef LDAP_CONTROL_PAGEDRESULTS
 790 static int parsePagedResults (
 791         Connection *conn,
 792         Operation *op,
 793         LDAPControl *ctrl,
 794         const char **text )
 795 {
 796         ber_tag_t tag;
 797         ber_int_t size;
 798         BerElement *ber;
 799         struct berval cookie = { 0, NULL };
 800
 801         if ( op->o_pagedresults != SLAP_NO_CONTROL ) {
 802                 *text = "paged results control specified multiple times";
 803                 return LDAP_PROTOCOL_ERROR;
 804         }
 805
 806         if ( ctrl->ldctl_value.bv_len == 0 ) {
 807                 *text = "paged results control value is empty (or absent)";
 808                 return LDAP_PROTOCOL_ERROR;
 809         }
 810
 811         /* Parse the control value
 812          *      realSearchControlValue ::= SEQUENCE {
 813          *              size    INTEGER (0..maxInt),
 814          *                              -- requested page size from client
 815          *                              -- result set size estimate from server
 816          *              cookie  OCTET STRING
 817          * }
 818          */
 819         ber = ber_init( &ctrl->ldctl_value );
 820         if( ber == NULL ) {
 821                 *text = "internal error";
 822                 return LDAP_OTHER;
 823         }
 824
 825         tag = ber_scanf( ber, "{im}", &size, &cookie );
 826         (void) ber_free( ber, 1 );
 827
 828         if( tag == LBER_ERROR ) {
 829                 *text = "paged results control could not be decoded";
 830                 return LDAP_PROTOCOL_ERROR;
 831         }
 832
 833         if( size < 0 ) {
 834                 *text = "paged results control size invalid";
 835                 return LDAP_PROTOCOL_ERROR;
 836         }
 837
 838         if( cookie.bv_len ) {
 839                 PagedResultsCookie reqcookie;
 840                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 841                         /* bad cookie */
 842                         *text = "paged results cookie is invalid";
 843                         return LDAP_PROTOCOL_ERROR;
 844                 }
 845
 846                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 847
 848                 if( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 849                         /* bad cookie */
 850                         *text = "paged results cookie is invalid";
 851                         return LDAP_PROTOCOL_ERROR;
 852
 853                 } else if( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 854                         *text = "paged results cookie is invalid or old";
 855                         return LDAP_UNWILLING_TO_PERFORM;
 856                 }
 857         } else {
 858                 /* Initial request.  Initialize state. */
 859                 op->o_pagedresults_state.ps_cookie = 0;
 860                 op->o_pagedresults_state.ps_id = NOID;
 861         }
 862
 863         op->o_pagedresults_size = size;
 864
 865         op->o_pagedresults = ctrl->ldctl_iscritical
 866                 ? SLAP_CRITICAL_CONTROL
 867                 : SLAP_NONCRITICAL_CONTROL;
 868
 869         return LDAP_SUCCESS;
 870 }
 871 #endif
 872
 873 int parseValuesReturnFilter (
 874         Connection *conn,
 875         Operation *op,
 876         LDAPControl *ctrl,
 877         const char **text )
 878 {
 879         int             rc;
 880         BerElement      *ber;
 881         struct berval   fstr = { 0, NULL };
 882         const char *err_msg = "";
 883
 884         if ( op->o_valuesreturnfilter != SLAP_NO_CONTROL ) {
 885                 *text = "valuesReturnFilter control specified multiple times";
 886                 return LDAP_PROTOCOL_ERROR;
 887         }
 888
 889         if ( ctrl->ldctl_value.bv_len == 0 ) {
 890                 *text = "valuesReturnFilter control value is empty (or absent)";
 891                 return LDAP_PROTOCOL_ERROR;
 892         }
 893
 894         ber = ber_init( &(ctrl->ldctl_value) );
 895         if (ber == NULL) {
 896                 *text = "internal error";
 897                 return LDAP_OTHER;
 898         }
 899
 900         rc = get_vrFilter( conn, ber, &(op->vrFilter), &err_msg);
 901
 902         if( rc != LDAP_SUCCESS ) {
 903                 text = &err_msg;
 904                 if( rc == SLAPD_DISCONNECT ) {
 905                         send_ldap_disconnect( conn, op,
 906                                 LDAP_PROTOCOL_ERROR, *text );
 907                 } else {
 908                         send_ldap_result( conn, op, rc,
 909                                 NULL, *text, NULL, NULL );
 910                 }
 911                 if( fstr.bv_val != NULL) free( fstr.bv_val );
 912                 if( op->vrFilter != NULL) vrFilter_free( op->vrFilter );
 913
 914         } else {
 915                 vrFilter2bv( op->vrFilter, &fstr );
 916         }
 917
 918 #ifdef NEW_LOGGING
 919         LDAP_LOG( OPERATION, ARGS,
 920                 "parseValuesReturnFilter: conn %d       vrFilter: %s\n",
 921                 conn->c_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
 922 #else
 923         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
 924                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
 925 #endif
 926
 927         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
 928                 ? SLAP_CRITICAL_CONTROL
 929                 : SLAP_NONCRITICAL_CONTROL;
 930
 931         return LDAP_SUCCESS;
 932 }
 933
 934 #ifdef LDAP_CONTROL_SUBENTRIES
 935 static int parseSubentries (
 936         Connection *conn,
 937         Operation *op,
 938         LDAPControl *ctrl,
 939         const char **text )
 940 {
 941         if ( op->o_subentries != SLAP_NO_CONTROL ) {
 942                 *text = "subentries control specified multiple times";
 943                 return LDAP_PROTOCOL_ERROR;
 944         }
 945
 946         /* FIXME: should use BER library */
 947         if( ( ctrl->ldctl_value.bv_len != 3 )
 948                 && ( ctrl->ldctl_value.bv_val[0] != 0x01 )
 949                 && ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
 950         {
 951                 *text = "subentries control value encoding is bogus";
 952                 return LDAP_PROTOCOL_ERROR;
 953         }
 954
 955         op->o_subentries = ctrl->ldctl_iscritical
 956                 ? SLAP_CRITICAL_CONTROL
 957                 : SLAP_NONCRITICAL_CONTROL;
 958
 959         op->o_subentries_visibility = (ctrl->ldctl_value.bv_val[2] != 0x00);
 960
 961         return LDAP_SUCCESS;
 962 }
 963 #endif
 964
 965 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
 966 static int parsePermissiveModify (
 967         Connection *conn,
 968         Operation *op,
 969         LDAPControl *ctrl,
 970         const char **text )
 971 {
 972         if ( op->o_permissive_modify != SLAP_NO_CONTROL ) {
 973                 *text = "permissiveModify control specified multiple times";
 974                 return LDAP_PROTOCOL_ERROR;
 975         }
 976
 977         if ( ctrl->ldctl_value.bv_len ) {
 978                 *text = "permissiveModify control value not empty";
 979                 return LDAP_PROTOCOL_ERROR;
 980         }
 981
 982         op->o_permissive_modify = ctrl->ldctl_iscritical
 983                 ? SLAP_CRITICAL_CONTROL
 984                 : SLAP_NONCRITICAL_CONTROL;
 985
 986         return LDAP_SUCCESS;
 987 }
 988 #endif
 989
 990 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
 991 static int parseDomainScope (
 992         Connection *conn,
 993         Operation *op,
 994         LDAPControl *ctrl,
 995         const char **text )
 996 {
 997         if ( op->o_domain_scope != SLAP_NO_CONTROL ) {
 998                 *text = "domainScope control specified multiple times";
 999                 return LDAP_PROTOCOL_ERROR;
1000         }
1001
1002         if ( ctrl->ldctl_value.bv_len ) {
1003                 *text = "domainScope control value not empty";
1004                 return LDAP_PROTOCOL_ERROR;
1005         }
1006
1007         op->o_domain_scope = ctrl->ldctl_iscritical
1008                 ? SLAP_CRITICAL_CONTROL
1009                 : SLAP_NONCRITICAL_CONTROL;
1010
1011         return LDAP_SUCCESS;
1012 }
1013 #endif
1014
1015 #ifdef LDAP_CLIENT_UPDATE
1016 static int parseClientUpdate (
1017         Connection *conn,
1018         Operation *op,
1019         LDAPControl *ctrl,
1020         const char **text )
1021 {
1022         ber_tag_t tag;
1023         BerElement *ber;
1024         ber_int_t type;
1025         ber_int_t interval;
1026         ber_len_t len;
1027         struct berval scheme = { 0, NULL };
1028         struct berval cookie = { 0, NULL };
1029
1030         if ( op->o_clientupdate != SLAP_NO_CONTROL ) {
1031                 *text = "LCUP client update control specified multiple times";
1032                 return LDAP_PROTOCOL_ERROR;
1033         }
1034
1035 #ifdef LDAP_SYNC
1036         if ( op->o_sync != SLAP_NO_CONTROL ) {
1037                 *text = "LDAP Client Update and Sync controls used together";
1038                 return LDAP_PROTOCOL_ERROR;
1039         }
1040 #endif
1041
1042         if ( ctrl->ldctl_value.bv_len == 0 ) {
1043                 *text = "LCUP client update control value is empty (or absent)";
1044                 return LDAP_PROTOCOL_ERROR;
1045         }
1046
1047         /* Parse the control value
1048          *      ClientUpdateControlValue ::= SEQUENCE {
1049          *              updateType      ENUMERATED {
1050          *                                      synchronizeOnly {0},
1051          *                                      synchronizeAndPersist {1},
1052          *                                      persistOnly {2} },
1053          *              sendCookieInterval INTEGER OPTIONAL,
1054          *              cookie          LCUPCookie OPTIONAL
1055          *      }
1056          */
1057
1058         ber = ber_init( &ctrl->ldctl_value );
1059         if( ber == NULL ) {
1060                 *text = "internal error";
1061                 return LDAP_OTHER;
1062         }
1063
1064         if ( (tag = ber_scanf( ber, "{i" /*}*/, &type )) == LBER_ERROR ) {
1065                 *text = "LCUP client update control : decoding error";
1066                 return LDAP_PROTOCOL_ERROR;
1067         }
1068
1069         switch( type ) {
1070         case LDAP_CUP_SYNC_ONLY:
1071                 type = SLAP_LCUP_SYNC;
1072                 break;
1073         case LDAP_CUP_SYNC_AND_PERSIST:
1074                 type = SLAP_LCUP_SYNC_AND_PERSIST;
1075                 break;
1076         case LDAP_CUP_PERSIST_ONLY:
1077                 type = SLAP_LCUP_PERSIST;
1078                 break;
1079         default:
1080                 *text = "LCUP client update control : unknown update type";
1081                 return LDAP_PROTOCOL_ERROR;
1082         }
1083
1084         if ( (tag = ber_peek_tag( ber, &len )) == LBER_DEFAULT ) {
1085                 *text = "LCUP client update control : decoding error";
1086                 return LDAP_PROTOCOL_ERROR;
1087         }
1088
1089         if ( tag == LDAP_CUP_TAG_INTERVAL ) {
1090                 if ( (tag = ber_scanf( ber, "i", &interval )) == LBER_ERROR ) {
1091                         *text = "LCUP client update control : decoding error";
1092                         return LDAP_PROTOCOL_ERROR;
1093                 }
1094
1095                 if ( interval <= 0 ) {
1096                         /* server chooses interval */
1097                         interval = LDAP_CUP_DEFAULT_SEND_COOKIE_INTERVAL;
1098                 }
1099
1100         } else {
1101                 /* server chooses interval */
1102                 interval = LDAP_CUP_DEFAULT_SEND_COOKIE_INTERVAL;
1103         }
1104
1105         if ( (tag = ber_peek_tag( ber, &len )) == LBER_DEFAULT ) {
1106                 *text = "LCUP client update control : decoding error";
1107                 return LDAP_PROTOCOL_ERROR;
1108         }
1109
1110         if ( tag == LDAP_CUP_TAG_COOKIE ) {
1111                 if ( (tag = ber_scanf( ber, /*{*/ "{mm}}",
1112                         &scheme, &cookie )) == LBER_ERROR )
1113                 {
1114                         *text = "LCUP client update control : decoding error";
1115                         return LDAP_PROTOCOL_ERROR;
1116                 }
1117         }
1118
1119         /* TODO : Cookie Scheme Validation */
1120 #if 0
1121         if ( lcup_cookie_scheme_validate(scheme) != LDAP_SUCCESS ) {
1122                 *text = "Unsupported LCUP cookie scheme";
1123                 return LCUP_UNSUPPORTED_SCHEME;
1124         }
1125
1126         if ( lcup_cookie_validate(scheme, cookie) != LDAP_SUCCESS ) {
1127                 *text = "Invalid LCUP cookie";
1128                 return LCUP_INVALID_COOKIE;
1129         }
1130 #endif
1131
1132         ber_dupbv( &op->o_clientupdate_state, &cookie );
1133
1134         (void) ber_free( ber, 1 );
1135
1136         op->o_clientupdate_type = (char) type;
1137         op->o_clientupdate_interval = interval;
1138
1139         op->o_clientupdate = ctrl->ldctl_iscritical
1140                 ? SLAP_CRITICAL_CONTROL
1141                 : SLAP_NONCRITICAL_CONTROL;
1142
1143         return LDAP_SUCCESS;
1144 }
1145 #endif
1146
1147 #ifdef LDAP_SYNC
1148 static int parseLdupSync (
1149         Connection *conn,
1150         Operation *op,
1151         LDAPControl *ctrl,
1152         const char **text )
1153 {
1154         ber_tag_t tag;
1155         BerElement *ber;
1156         ber_int_t mode;
1157         ber_len_t len;
1158         struct berval cookie = { 0, NULL };
1159
1160         if ( op->o_sync != SLAP_NO_CONTROL ) {
1161                 *text = "LDAP Sync control specified multiple times";
1162                 return LDAP_PROTOCOL_ERROR;
1163         }
1164
1165 #ifdef LDAP_CLIENT_UPDATE
1166         if ( op->o_clientupdate != SLAP_NO_CONTROL ) {
1167                 *text = "LDAP Sync and LDAP Client Update controls used together";
1168                 return LDAP_PROTOCOL_ERROR;
1169         }
1170 #endif
1171
1172         if ( ctrl->ldctl_value.bv_len == 0 ) {
1173                 *text = "LDAP Sync control value is empty (or absent)";
1174                 return LDAP_PROTOCOL_ERROR;
1175         }
1176
1177         /* Parse the control value
1178          *      syncRequestValue ::= SEQUENCE {
1179          *              mode   ENUMERATED {
1180          *                      -- 0 unused
1181          *                      refreshOnly             (1),
1182          *                      -- 2 reserved
1183          *                      refreshAndPersist       (3)
1184          *              },
1185          *              cookie  syncCookie OPTIONAL
1186          *      }
1187          */
1188
1189         ber = ber_init( &ctrl->ldctl_value );
1190         if( ber == NULL ) {
1191                 *text = "internal error";
1192                 return LDAP_OTHER;
1193         }
1194
1195         if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
1196                 *text = "LDAP Sync control : mode decoding error";
1197                 return LDAP_PROTOCOL_ERROR;
1198         }
1199
1200         switch( mode ) {
1201         case LDAP_SYNC_REFRESH_ONLY:
1202                 mode = SLAP_SYNC_REFRESH;
1203                 break;
1204         case LDAP_SYNC_REFRESH_AND_PERSIST:
1205                 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
1206                 break;
1207         default:
1208                 *text = "LDAP Sync control : unknown update mode";
1209                 return LDAP_PROTOCOL_ERROR;
1210         }
1211
1212         tag = ber_peek_tag( ber, &len );
1213
1214         if ( tag == LDAP_SYNC_TAG_COOKIE ) {
1215                 if (( ber_scanf( ber, /*{*/ "m}",
1216                                         &cookie )) == LBER_ERROR ) {
1217                         *text = "LDAP Sync control : cookie decoding error";
1218                         return LDAP_PROTOCOL_ERROR;
1219                 }
1220         } else {
1221                 if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
1222                         *text = "LDAP Sync control : decoding error";
1223                         return LDAP_PROTOCOL_ERROR;
1224                 }
1225                 cookie.bv_len = 0;
1226                 cookie.bv_val = NULL;
1227         }
1228
1229         /* TODO : Cookie Scheme Validation */
1230 #if 0
1231         if ( lcup_cookie_scheme_validate(scheme) != LDAP_SUCCESS ) {
1232                 *text = "Unsupported LCUP cookie scheme";
1233                 return LCUP_UNSUPPORTED_SCHEME;
1234         }
1235
1236         if ( lcup_cookie_validate(scheme, cookie) != LDAP_SUCCESS ) {
1237                 *text = "Invalid LCUP cookie";
1238                 return LCUP_INVALID_COOKIE;
1239         }
1240 #endif
1241
1242         ber_dupbv( &op->o_sync_state, &cookie );
1243
1244         (void) ber_free( ber, 1 );
1245
1246         op->o_sync_mode = (char) mode;
1247
1248         op->o_sync = ctrl->ldctl_iscritical
1249                 ? SLAP_CRITICAL_CONTROL
1250                 : SLAP_NONCRITICAL_CONTROL;
1251
1252         return LDAP_SUCCESS;
1253 }
1254 #endif