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_ENTRY_INITIALIZER(next) },
  84 #ifdef LDAP_CONTROL_PAGEDRESULTS
  85         { LDAP_CONTROL_PAGEDRESULTS,
  86                 SLAP_CTRL_SEARCH, NULL,
  87                 parsePagedResults, LDAP_SLIST_ENTRY_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_ENTRY_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_ENTRY_INITIALIZER(next) },
  98 #endif
  99 #ifdef LDAP_CONTROL_SUBENTRIES
 100         { LDAP_CONTROL_SUBENTRIES,
 101                 SLAP_CTRL_SEARCH, NULL,
 102                 parseSubentries, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 103 #endif
 104         { LDAP_CONTROL_NOOP,
 105                 SLAP_CTRL_ACCESS, NULL,
 106                 parseNoOp, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 107 #ifdef LDAP_CLIENT_UPDATE
 108         { LDAP_CONTROL_CLIENT_UPDATE,
 109                 SLAP_CTRL_SEARCH, NULL,
 110                 parseClientUpdate, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 111 #endif
 112 #ifdef LDAP_SYNC
 113         { LDAP_CONTROL_SYNC,
 114                 SLAP_CTRL_SEARCH, NULL,
 115                 parseLdupSync, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 116 #endif
 117         { LDAP_CONTROL_MANAGEDSAIT,
 118                 SLAP_CTRL_ACCESS, NULL,
 119                 parseManageDSAit, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 120         { LDAP_CONTROL_PROXY_AUTHZ,
 121                 SLAP_CTRL_FRONTEND|SLAP_CTRL_ACCESS, proxy_authz_extops,
 122                 parseProxyAuthz, LDAP_SLIST_ENTRY_INITIALIZER(next) },
 123         { NULL, 0, NULL, 0, LDAP_SLIST_ENTRY_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                 ch_free( sc );
 230         }
 231         ldap_charray_free( slap_known_controls );
 232 }
 233
 234 /*
 235  * Format the supportedControl attribute of the root DSE,
 236  * detailing which controls are supported by the directory
 237  * server.
 238  */
 239 int
 240 controls_root_dse_info( Entry *e )
 241 {
 242         AttributeDescription *ad_supportedControl
 243                 = slap_schema.si_ad_supportedControl;
 244         struct berval vals[2];
 245         struct slap_control *sc;
 246
 247         vals[1].bv_val = NULL;
 248         vals[1].bv_len = 0;
 249
 250         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 251                 vals[0].bv_val = sc->sc_oid;
 252                 vals[0].bv_len = strlen( sc->sc_oid );
 253 #ifdef SLAP_NVALUES
 254                 if ( attr_merge( e, ad_supportedControl, vals, NULL ) )
 255 #else
 256                 if ( attr_merge( e, ad_supportedControl, vals ) )
 257 #endif /* SLAP_NVALUES */
 258                         return -1;
 259         }
 260
 261         return 0;
 262 }
 263
 264 /*
 265  * Return a list of OIDs and operation masks for supported
 266  * controls. Used by SLAPI.
 267  */
 268 int
 269 get_supported_controls(char ***ctrloidsp,
 270         slap_mask_t **ctrlmasks)
 271 {
 272         int i, n;
 273         char **oids;
 274         slap_mask_t *masks;
 275         int rc;
 276         struct slap_control *sc;
 277
 278         n = 0;
 279
 280         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 281                 n++;
 282         }
 283
 284         if ( n == 0 ) {
 285                 *ctrloidsp = NULL;
 286                 *ctrlmasks = NULL;
 287                 return LDAP_SUCCESS;
 288         }
 289
 290         oids = (char **)SLAP_MALLOC( (n + 1) * sizeof(char *) );
 291         if ( oids == NULL ) {
 292                 return LDAP_NO_MEMORY;
 293         }
 294         masks = (slap_mask_t *)SLAP_MALLOC( (n + 1) * sizeof(slap_mask_t) );
 295         if  ( masks == NULL ) {
 296                 ch_free( oids );
 297                 return LDAP_NO_MEMORY;
 298         }
 299
 300         n = 0;
 301
 302         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 303                 oids[n] = ch_strdup( sc->sc_oid );
 304                 masks[n] = sc->sc_mask;
 305                 n++;
 306         }
 307         oids[n] = NULL;
 308         masks[n] = 0;
 309
 310         *ctrloidsp = oids;
 311         *ctrlmasks = masks;
 312
 313         return LDAP_SUCCESS;
 314 }
 315
 316 /*
 317  * Find a control given its OID.
 318  */
 319 static struct slap_control *
 320 find_ctrl( const char *oid )
 321 {
 322         struct slap_control *sc;
 323
 324         LDAP_SLIST_FOREACH( sc, &controls_list, sc_next ) {
 325                 if ( strcmp( oid, sc->sc_oid ) == 0 ) {
 326                         return sc;
 327                 }
 328         }
 329
 330         return NULL;
 331 }
 332
 333 int get_ctrls(
 334         Connection *conn,
 335         Operation *op,
 336         int sendres )
 337 {
 338         int nctrls = 0;
 339         ber_tag_t tag;
 340         ber_len_t len;
 341         char *opaque;
 342         BerElement *ber = op->o_ber;
 343         struct slap_control *sc;
 344         int rc = LDAP_SUCCESS;
 345         const char *errmsg = NULL;
 346
 347         len = ber_pvt_ber_remaining(ber);
 348
 349         if( len == 0) {
 350                 /* no controls */
 351                 rc = LDAP_SUCCESS;
 352                 return rc;
 353         }
 354
 355         if(( tag = ber_peek_tag( ber, &len )) != LDAP_TAG_CONTROLS ) {
 356                 if( tag == LBER_ERROR ) {
 357                         rc = SLAPD_DISCONNECT;
 358                         errmsg = "unexpected data in PDU";
 359                 }
 360
 361                 goto return_results;
 362         }
 363
 364 #ifdef NEW_LOGGING
 365         LDAP_LOG( OPERATION, ENTRY,
 366                 "get_ctrls: conn %lu\n", conn->c_connid, 0, 0 );
 367 #else
 368         Debug( LDAP_DEBUG_TRACE,
 369                 "=> get_ctrls\n", 0, 0, 0 );
 370 #endif
 371
 372         if( op->o_protocol < LDAP_VERSION3 ) {
 373                 rc = SLAPD_DISCONNECT;
 374                 errmsg = "controls require LDAPv3";
 375                 goto return_results;
 376         }
 377
 378         /* one for first control, one for termination */
 379         op->o_ctrls = ch_malloc( 2 * sizeof(LDAPControl *) );
 380
 381 #if 0
 382         if( op->ctrls == NULL ) {
 383                 rc = LDAP_NO_MEMORY;
 384                 errmsg = "no memory";
 385                 goto return_results;
 386         }
 387 #endif
 388
 389         op->o_ctrls[nctrls] = NULL;
 390
 391         /* step through each element */
 392         for( tag = ber_first_element( ber, &len, &opaque );
 393                 tag != LBER_ERROR;
 394                 tag = ber_next_element( ber, &len, opaque ) )
 395         {
 396                 LDAPControl *c;
 397                 LDAPControl **tctrls;
 398
 399                 c = ch_calloc( 1, sizeof(LDAPControl) );
 400
 401 #if 0
 402                 if( c == NULL ) {
 403                         ldap_controls_free(op->o_ctrls);
 404                         op->o_ctrls = NULL;
 405
 406                         rc = LDAP_NO_MEMORY;
 407                         errmsg = "no memory";
 408                         goto return_results;
 409                 }
 410 #endif
 411
 412                 /* allocate pointer space for current controls (nctrls)
 413                  * + this control + extra NULL
 414                  */
 415                 tctrls = ch_realloc( op->o_ctrls,
 416                         (nctrls+2) * sizeof(LDAPControl *));
 417
 418 #if 0
 419                 if( tctrls == NULL ) {
 420                         ch_free( c );
 421                         ldap_controls_free(op->o_ctrls);
 422                         op->o_ctrls = NULL;
 423
 424                         rc = LDAP_NO_MEMORY;
 425                         errmsg = "no memory";
 426                         goto return_results;
 427                 }
 428 #endif
 429                 op->o_ctrls = tctrls;
 430
 431                 op->o_ctrls[nctrls++] = c;
 432                 op->o_ctrls[nctrls] = NULL;
 433
 434                 tag = ber_scanf( ber, "{a" /*}*/, &c->ldctl_oid );
 435
 436                 if( tag == LBER_ERROR ) {
 437 #ifdef NEW_LOGGING
 438                         LDAP_LOG( OPERATION, INFO, "get_ctrls: conn %lu get OID failed.\n",
 439                                 conn->c_connid, 0, 0 );
 440 #else
 441                         Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get oid failed.\n",
 442                                 0, 0, 0 );
 443 #endif
 444
 445                         ldap_controls_free( op->o_ctrls );
 446                         op->o_ctrls = NULL;
 447                         rc = SLAPD_DISCONNECT;
 448                         errmsg = "decoding controls error";
 449                         goto return_results;
 450
 451                 } else if( c->ldctl_oid == NULL ) {
 452 #ifdef NEW_LOGGING
 453                         LDAP_LOG( OPERATION, INFO,
 454                                 "get_ctrls: conn %lu got emtpy OID.\n",
 455                                 conn->c_connid, 0, 0 );
 456 #else
 457                         Debug( LDAP_DEBUG_TRACE,
 458                                 "get_ctrls: conn %lu got emtpy OID.\n",
 459                                 conn->c_connid, 0, 0 );
 460 #endif
 461
 462                         ldap_controls_free( op->o_ctrls );
 463                         op->o_ctrls = NULL;
 464                         rc = LDAP_PROTOCOL_ERROR;
 465                         errmsg = "OID field is empty";
 466                         goto return_results;
 467                 }
 468
 469                 tag = ber_peek_tag( ber, &len );
 470
 471                 if( tag == LBER_BOOLEAN ) {
 472                         ber_int_t crit;
 473                         tag = ber_scanf( ber, "b", &crit );
 474
 475                         if( tag == LBER_ERROR ) {
 476 #ifdef NEW_LOGGING
 477                                 LDAP_LOG( OPERATION, INFO,
 478                                         "get_ctrls: conn %lu get crit failed.\n",
 479                                         conn->c_connid, 0, 0 );
 480 #else
 481                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: get crit failed.\n",
 482                                         0, 0, 0 );
 483 #endif
 484                                 ldap_controls_free( op->o_ctrls );
 485                                 op->o_ctrls = NULL;
 486                                 rc = SLAPD_DISCONNECT;
 487                                 errmsg = "decoding controls error";
 488                                 goto return_results;
 489                         }
 490
 491                         c->ldctl_iscritical = (crit != 0);
 492                         tag = ber_peek_tag( ber, &len );
 493                 }
 494
 495                 if( tag == LBER_OCTETSTRING ) {
 496                         tag = ber_scanf( ber, "o", &c->ldctl_value );
 497
 498                         if( tag == LBER_ERROR ) {
 499 #ifdef NEW_LOGGING
 500                                 LDAP_LOG( OPERATION, INFO, "get_ctrls: conn %lu: "
 501                                         "%s (%scritical): get value failed.\n",
 502                                         conn->c_connid, c->ldctl_oid,
 503                                         c->ldctl_iscritical ? "" : "non" );
 504 #else
 505                                 Debug( LDAP_DEBUG_TRACE, "=> get_ctrls: conn %lu: "
 506                                         "%s (%scritical): get value failed.\n",
 507                                         conn->c_connid, c->ldctl_oid,
 508                                         c->ldctl_iscritical ? "" : "non" );
 509 #endif
 510                                 ldap_controls_free( op->o_ctrls );
 511                                 op->o_ctrls = NULL;
 512                                 rc = SLAPD_DISCONNECT;
 513                                 errmsg = "decoding controls error";
 514                                 goto return_results;
 515                         }
 516                 }
 517
 518 #ifdef NEW_LOGGING
 519                 LDAP_LOG( OPERATION, INFO,
 520                         "get_ctrls: conn %lu oid=\"%s\" (%scritical)\n",
 521                         conn->c_connid, c->ldctl_oid, c->ldctl_iscritical ? "" : "non" );
 522 #else
 523                 Debug( LDAP_DEBUG_TRACE,
 524                         "=> get_ctrls: oid=\"%s\" (%scritical)\n",
 525                         c->ldctl_oid, c->ldctl_iscritical ? "" : "non", 0 );
 526 #endif
 527
 528                 sc = find_ctrl( c->ldctl_oid );
 529                 if( sc != NULL ) {
 530                         /* recognized control */
 531                         slap_mask_t tagmask;
 532                         switch( op->o_tag ) {
 533                         case LDAP_REQ_ADD:
 534                                 tagmask = SLAP_CTRL_ADD;
 535                                 break;
 536                         case LDAP_REQ_BIND:
 537                                 tagmask = SLAP_CTRL_BIND;
 538                                 break;
 539                         case LDAP_REQ_COMPARE:
 540                                 tagmask = SLAP_CTRL_COMPARE;
 541                                 break;
 542                         case LDAP_REQ_DELETE:
 543                                 tagmask = SLAP_CTRL_DELETE;
 544                                 break;
 545                         case LDAP_REQ_MODIFY:
 546                                 tagmask = SLAP_CTRL_MODIFY;
 547                                 break;
 548                         case LDAP_REQ_RENAME:
 549                                 tagmask = SLAP_CTRL_RENAME;
 550                                 break;
 551                         case LDAP_REQ_SEARCH:
 552                                 tagmask = SLAP_CTRL_SEARCH;
 553                                 break;
 554                         case LDAP_REQ_UNBIND:
 555                                 tagmask = SLAP_CTRL_UNBIND;
 556                                 break;
 557                         case LDAP_REQ_ABANDON:
 558                                 tagmask = SLAP_CTRL_ABANDON;
 559                                 break;
 560                         case LDAP_REQ_EXTENDED:
 561                                 tagmask=~0L;
 562                                 assert( op->o_extendedop != NULL );
 563                                 if( sc->sc_extendedops != NULL ) {
 564                                         int i;
 565                                         for( i=0; sc->sc_extendedops[i] != NULL; i++ ) {
 566                                                 if( strcmp( op->o_extendedop, sc->sc_extendedops[i] )
 567                                                         == 0 )
 568                                                 {
 569                                                         tagmask=0L;
 570                                                         break;
 571                                                 }
 572                                         }
 573                                 }
 574                                 break;
 575                         default:
 576                                 rc = LDAP_OTHER;
 577                                 errmsg = "controls internal error";
 578                                 goto return_results;
 579                         }
 580
 581                         if (( sc->sc_mask & tagmask ) == tagmask ) {
 582                                 /* available extension */
 583
 584                                 if( !sc->sc_parse ) {
 585                                         rc = LDAP_OTHER;
 586                                         errmsg = "not yet implemented";
 587                                         goto return_results;
 588                                 }
 589
 590                                 rc = sc->sc_parse( conn, op, c, &errmsg );
 591
 592                                 if( rc != LDAP_SUCCESS ) goto return_results;
 593
 594                                 if ( sc->sc_mask & SLAP_CTRL_FRONTEND ) {
 595                                         /* kludge to disable backend_control() check */
 596                                         c->ldctl_iscritical = 0;
 597
 598                                 } else if ( tagmask == SLAP_CTRL_SEARCH &&
 599                                         sc->sc_mask & SLAP_CTRL_FRONTEND_SEARCH )
 600                                 {
 601                                         /* kludge to disable backend_control() check */
 602                                         c->ldctl_iscritical = 0;
 603                                 }
 604
 605                         } else if( c->ldctl_iscritical ) {
 606                                 /* unavailable CRITICAL control */
 607                                 rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 608                                 errmsg = "critical extension is unavailable";
 609                                 goto return_results;
 610                         }
 611
 612                 } else if( c->ldctl_iscritical ) {
 613                         /* unrecognized CRITICAL control */
 614                         rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION;
 615                         errmsg = "critical extension is not recognized";
 616                         goto return_results;
 617                 }
 618         }
 619
 620 return_results:
 621 #ifdef NEW_LOGGING
 622         LDAP_LOG( OPERATION, RESULTS,
 623                 "get_ctrls: n=%d rc=%d err=\"%s\"\n",
 624                 nctrls, rc, errmsg ? errmsg : "" );
 625 #else
 626         Debug( LDAP_DEBUG_TRACE,
 627                 "<= get_ctrls: n=%d rc=%d err=\"%s\"\n",
 628                 nctrls, rc, errmsg ? errmsg : "");
 629 #endif
 630
 631         if( sendres && rc != LDAP_SUCCESS ) {
 632                 if( rc == SLAPD_DISCONNECT ) {
 633                         send_ldap_disconnect( conn, op, LDAP_PROTOCOL_ERROR, errmsg );
 634                 } else {
 635                         send_ldap_result( conn, op, rc,
 636                                 NULL, errmsg, NULL, NULL );
 637                 }
 638         }
 639
 640         return rc;
 641 }
 642
 643 static int parseManageDSAit (
 644         Connection *conn,
 645         Operation *op,
 646         LDAPControl *ctrl,
 647         const char **text )
 648 {
 649         if ( op->o_managedsait != SLAP_NO_CONTROL ) {
 650                 *text = "manageDSAit control specified multiple times";
 651                 return LDAP_PROTOCOL_ERROR;
 652         }
 653
 654         if ( ctrl->ldctl_value.bv_len ) {
 655                 *text = "manageDSAit control value not empty";
 656                 return LDAP_PROTOCOL_ERROR;
 657         }
 658
 659         op->o_managedsait = ctrl->ldctl_iscritical
 660                 ? SLAP_CRITICAL_CONTROL
 661                 : SLAP_NONCRITICAL_CONTROL;
 662
 663         return LDAP_SUCCESS;
 664 }
 665
 666 static int parseProxyAuthz (
 667         Connection *conn,
 668         Operation *op,
 669         LDAPControl *ctrl,
 670         const char **text )
 671 {
 672         int rc;
 673         struct berval dn = { 0, NULL };
 674
 675         if ( op->o_proxy_authz != SLAP_NO_CONTROL ) {
 676                 *text = "proxy authorization control specified multiple times";
 677                 return LDAP_PROTOCOL_ERROR;
 678         }
 679
 680         op->o_proxy_authz = ctrl->ldctl_iscritical
 681                 ? SLAP_CRITICAL_CONTROL
 682                 : SLAP_NONCRITICAL_CONTROL;
 683
 684 #ifdef NEW_LOGGING
 685         LDAP_LOG( OPERATION, ARGS,
 686                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 687                 conn->c_connid,
 688                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 689                 0 );
 690 #else
 691         Debug( LDAP_DEBUG_ARGS,
 692                 "parseProxyAuthz: conn %lu authzid=\"%s\"\n",
 693                 conn->c_connid,
 694                 ctrl->ldctl_value.bv_len ?  ctrl->ldctl_value.bv_val : "anonymous",
 695                 0 );
 696 #endif
 697
 698         if( ctrl->ldctl_value.bv_len == 0 ) {
 699 #ifdef NEW_LOGGING
 700                 LDAP_LOG( OPERATION, RESULTS,
 701                         "parseProxyAuthz: conn=%lu anonymous\n",
 702                         conn->c_connid, 0, 0 );
 703 #else
 704                 Debug( LDAP_DEBUG_TRACE,
 705                         "parseProxyAuthz: conn=%lu anonymous\n",
 706                         conn->c_connid, 0, 0 );
 707 #endif
 708
 709                 /* anonymous */
 710                 free( op->o_dn.bv_val );
 711                 op->o_dn.bv_len = 0;
 712                 op->o_dn.bv_val = ch_strdup( "" );
 713
 714                 free( op->o_ndn.bv_val );
 715                 op->o_ndn.bv_len = 0;
 716                 op->o_ndn.bv_val = ch_strdup( "" );
 717
 718                 return LDAP_SUCCESS;
 719         }
 720
 721         rc = slap_sasl_getdn( conn,
 722                 ctrl->ldctl_value.bv_val, ctrl->ldctl_value.bv_len,
 723                 NULL, &dn, SLAP_GETDN_AUTHZID );
 724
 725         if( rc != LDAP_SUCCESS || !dn.bv_len ) {
 726                 if ( dn.bv_val ) {
 727                         ch_free( dn.bv_val );
 728                 }
 729                 *text = "authzId mapping failed";
 730                 return LDAP_PROXY_AUTHZ_FAILURE;
 731         }
 732
 733 #ifdef NEW_LOGGING
 734         LDAP_LOG( OPERATION, RESULTS,
 735                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 736                 conn->c_connid,
 737                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 738 #else
 739         Debug( LDAP_DEBUG_TRACE,
 740                 "parseProxyAuthz: conn=%lu \"%s\"\n",
 741                 conn->c_connid,
 742                 dn.bv_len ? dn.bv_val : "(NULL)", 0 );
 743 #endif
 744
 745         rc = slap_sasl_authorized( conn, &op->o_ndn, &dn );
 746
 747         if( rc ) {
 748                 ch_free( dn.bv_val );
 749                 *text = "not authorized to assume identity";
 750                 return LDAP_PROXY_AUTHZ_FAILURE;
 751         }
 752
 753         ch_free( op->o_dn.bv_val );
 754         ch_free( op->o_ndn.bv_val );
 755
 756         op->o_dn.bv_val = NULL;
 757         op->o_ndn = dn;
 758
 759         /*
 760          * NOTE: since slap_sasl_getdn() returns a normalized dn,
 761          * from now on op->o_dn is normalized
 762          */
 763         ber_dupbv( &op->o_dn, &dn );
 764
 765         return LDAP_SUCCESS;
 766 }
 767
 768 static int parseNoOp (
 769         Connection *conn,
 770         Operation *op,
 771         LDAPControl *ctrl,
 772         const char **text )
 773 {
 774         if ( op->o_noop != SLAP_NO_CONTROL ) {
 775                 *text = "noop control specified multiple times";
 776                 return LDAP_PROTOCOL_ERROR;
 777         }
 778
 779         if ( ctrl->ldctl_value.bv_len ) {
 780                 *text = "noop control value not empty";
 781                 return LDAP_PROTOCOL_ERROR;
 782         }
 783
 784         op->o_noop = ctrl->ldctl_iscritical
 785                 ? SLAP_CRITICAL_CONTROL
 786                 : SLAP_NONCRITICAL_CONTROL;
 787
 788         return LDAP_SUCCESS;
 789 }
 790
 791 #ifdef LDAP_CONTROL_PAGEDRESULTS
 792 static int parsePagedResults (
 793         Connection *conn,
 794         Operation *op,
 795         LDAPControl *ctrl,
 796         const char **text )
 797 {
 798         ber_tag_t tag;
 799         ber_int_t size;
 800         BerElement *ber;
 801         struct berval cookie = { 0, NULL };
 802
 803         if ( op->o_pagedresults != SLAP_NO_CONTROL ) {
 804                 *text = "paged results control specified multiple times";
 805                 return LDAP_PROTOCOL_ERROR;
 806         }
 807
 808         if ( ctrl->ldctl_value.bv_len == 0 ) {
 809                 *text = "paged results control value is empty (or absent)";
 810                 return LDAP_PROTOCOL_ERROR;
 811         }
 812
 813         /* Parse the control value
 814          *      realSearchControlValue ::= SEQUENCE {
 815          *              size    INTEGER (0..maxInt),
 816          *                              -- requested page size from client
 817          *                              -- result set size estimate from server
 818          *              cookie  OCTET STRING
 819          * }
 820          */
 821         ber = ber_init( &ctrl->ldctl_value );
 822         if( ber == NULL ) {
 823                 *text = "internal error";
 824                 return LDAP_OTHER;
 825         }
 826
 827         tag = ber_scanf( ber, "{im}", &size, &cookie );
 828         (void) ber_free( ber, 1 );
 829
 830         if( tag == LBER_ERROR ) {
 831                 *text = "paged results control could not be decoded";
 832                 return LDAP_PROTOCOL_ERROR;
 833         }
 834
 835         if( size < 0 ) {
 836                 *text = "paged results control size invalid";
 837                 return LDAP_PROTOCOL_ERROR;
 838         }
 839
 840         if( cookie.bv_len ) {
 841                 PagedResultsCookie reqcookie;
 842                 if( cookie.bv_len != sizeof( reqcookie ) ) {
 843                         /* bad cookie */
 844                         *text = "paged results cookie is invalid";
 845                         return LDAP_PROTOCOL_ERROR;
 846                 }
 847
 848                 AC_MEMCPY( &reqcookie, cookie.bv_val, sizeof( reqcookie ));
 849
 850                 if( reqcookie > op->o_pagedresults_state.ps_cookie ) {
 851                         /* bad cookie */
 852                         *text = "paged results cookie is invalid";
 853                         return LDAP_PROTOCOL_ERROR;
 854
 855                 } else if( reqcookie < op->o_pagedresults_state.ps_cookie ) {
 856                         *text = "paged results cookie is invalid or old";
 857                         return LDAP_UNWILLING_TO_PERFORM;
 858                 }
 859         } else {
 860                 /* Initial request.  Initialize state. */
 861                 op->o_pagedresults_state.ps_cookie = 0;
 862                 op->o_pagedresults_state.ps_id = NOID;
 863         }
 864
 865         op->o_pagedresults_size = size;
 866
 867         op->o_pagedresults = ctrl->ldctl_iscritical
 868                 ? SLAP_CRITICAL_CONTROL
 869                 : SLAP_NONCRITICAL_CONTROL;
 870
 871         return LDAP_SUCCESS;
 872 }
 873 #endif
 874
 875 int parseValuesReturnFilter (
 876         Connection *conn,
 877         Operation *op,
 878         LDAPControl *ctrl,
 879         const char **text )
 880 {
 881         int             rc;
 882         BerElement      *ber;
 883         struct berval   fstr = { 0, NULL };
 884         const char *err_msg = "";
 885
 886         if ( op->o_valuesreturnfilter != SLAP_NO_CONTROL ) {
 887                 *text = "valuesReturnFilter control specified multiple times";
 888                 return LDAP_PROTOCOL_ERROR;
 889         }
 890
 891         if ( ctrl->ldctl_value.bv_len == 0 ) {
 892                 *text = "valuesReturnFilter control value is empty (or absent)";
 893                 return LDAP_PROTOCOL_ERROR;
 894         }
 895
 896         ber = ber_init( &(ctrl->ldctl_value) );
 897         if (ber == NULL) {
 898                 *text = "internal error";
 899                 return LDAP_OTHER;
 900         }
 901
 902         rc = get_vrFilter( conn, ber, &(op->vrFilter), &err_msg);
 903
 904         if( rc != LDAP_SUCCESS ) {
 905                 text = &err_msg;
 906                 if( rc == SLAPD_DISCONNECT ) {
 907                         send_ldap_disconnect( conn, op,
 908                                 LDAP_PROTOCOL_ERROR, *text );
 909                 } else {
 910                         send_ldap_result( conn, op, rc,
 911                                 NULL, *text, NULL, NULL );
 912                 }
 913                 if( fstr.bv_val != NULL) free( fstr.bv_val );
 914                 if( op->vrFilter != NULL) vrFilter_free( op->vrFilter );
 915
 916         } else {
 917                 vrFilter2bv( op->vrFilter, &fstr );
 918         }
 919
 920 #ifdef NEW_LOGGING
 921         LDAP_LOG( OPERATION, ARGS,
 922                 "parseValuesReturnFilter: conn %d       vrFilter: %s\n",
 923                 conn->c_connid, fstr.bv_len ? fstr.bv_val : "empty" , 0 );
 924 #else
 925         Debug( LDAP_DEBUG_ARGS, "       vrFilter: %s\n",
 926                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
 927 #endif
 928
 929         op->o_valuesreturnfilter = ctrl->ldctl_iscritical
 930                 ? SLAP_CRITICAL_CONTROL
 931                 : SLAP_NONCRITICAL_CONTROL;
 932
 933         return LDAP_SUCCESS;
 934 }
 935
 936 #ifdef LDAP_CONTROL_SUBENTRIES
 937 static int parseSubentries (
 938         Connection *conn,
 939         Operation *op,
 940         LDAPControl *ctrl,
 941         const char **text )
 942 {
 943         if ( op->o_subentries != SLAP_NO_CONTROL ) {
 944                 *text = "subentries control specified multiple times";
 945                 return LDAP_PROTOCOL_ERROR;
 946         }
 947
 948         /* FIXME: should use BER library */
 949         if( ( ctrl->ldctl_value.bv_len != 3 )
 950                 && ( ctrl->ldctl_value.bv_val[0] != 0x01 )
 951                 && ( ctrl->ldctl_value.bv_val[1] != 0x01 ))
 952         {
 953                 *text = "subentries control value encoding is bogus";
 954                 return LDAP_PROTOCOL_ERROR;
 955         }
 956
 957         op->o_subentries = ctrl->ldctl_iscritical
 958                 ? SLAP_CRITICAL_CONTROL
 959                 : SLAP_NONCRITICAL_CONTROL;
 960
 961         op->o_subentries_visibility = (ctrl->ldctl_value.bv_val[2] != 0x00);
 962
 963         return LDAP_SUCCESS;
 964 }
 965 #endif
 966
 967 #ifdef LDAP_CONTROL_X_PERMISSIVE_MODIFY
 968 static int parsePermissiveModify (
 969         Connection *conn,
 970         Operation *op,
 971         LDAPControl *ctrl,
 972         const char **text )
 973 {
 974         if ( op->o_permissive_modify != SLAP_NO_CONTROL ) {
 975                 *text = "permissiveModify control specified multiple times";
 976                 return LDAP_PROTOCOL_ERROR;
 977         }
 978
 979         if ( ctrl->ldctl_value.bv_len ) {
 980                 *text = "permissiveModify control value not empty";
 981                 return LDAP_PROTOCOL_ERROR;
 982         }
 983
 984         op->o_permissive_modify = ctrl->ldctl_iscritical
 985                 ? SLAP_CRITICAL_CONTROL
 986                 : SLAP_NONCRITICAL_CONTROL;
 987
 988         return LDAP_SUCCESS;
 989 }
 990 #endif
 991
 992 #ifdef LDAP_CONTROL_X_DOMAIN_SCOPE
 993 static int parseDomainScope (
 994         Connection *conn,
 995         Operation *op,
 996         LDAPControl *ctrl,
 997         const char **text )
 998 {
 999         if ( op->o_domain_scope != SLAP_NO_CONTROL ) {
1000                 *text = "domainScope control specified multiple times";
1001                 return LDAP_PROTOCOL_ERROR;
1002         }
1003
1004         if ( ctrl->ldctl_value.bv_len ) {
1005                 *text = "domainScope control value not empty";
1006                 return LDAP_PROTOCOL_ERROR;
1007         }
1008
1009         op->o_domain_scope = ctrl->ldctl_iscritical
1010                 ? SLAP_CRITICAL_CONTROL
1011                 : SLAP_NONCRITICAL_CONTROL;
1012
1013         return LDAP_SUCCESS;
1014 }
1015 #endif
1016
1017 #ifdef LDAP_CLIENT_UPDATE
1018 static int parseClientUpdate (
1019         Connection *conn,
1020         Operation *op,
1021         LDAPControl *ctrl,
1022         const char **text )
1023 {
1024         ber_tag_t tag;
1025         BerElement *ber;
1026         ber_int_t type;
1027         ber_int_t interval;
1028         ber_len_t len;
1029         struct berval scheme = { 0, NULL };
1030         struct berval cookie = { 0, NULL };
1031
1032         if ( op->o_clientupdate != SLAP_NO_CONTROL ) {
1033                 *text = "LCUP client update control specified multiple times";
1034                 return LDAP_PROTOCOL_ERROR;
1035         }
1036
1037 #ifdef LDAP_SYNC
1038         if ( op->o_sync != SLAP_NO_CONTROL ) {
1039                 *text = "LDAP Client Update and Sync controls used together";
1040                 return LDAP_PROTOCOL_ERROR;
1041         }
1042 #endif
1043
1044         if ( ctrl->ldctl_value.bv_len == 0 ) {
1045                 *text = "LCUP client update control value is empty (or absent)";
1046                 return LDAP_PROTOCOL_ERROR;
1047         }
1048
1049         /* Parse the control value
1050          *      ClientUpdateControlValue ::= SEQUENCE {
1051          *              updateType      ENUMERATED {
1052          *                                      synchronizeOnly {0},
1053          *                                      synchronizeAndPersist {1},
1054          *                                      persistOnly {2} },
1055          *              sendCookieInterval INTEGER OPTIONAL,
1056          *              cookie          LCUPCookie OPTIONAL
1057          *      }
1058          */
1059
1060         ber = ber_init( &ctrl->ldctl_value );
1061         if( ber == NULL ) {
1062                 *text = "internal error";
1063                 return LDAP_OTHER;
1064         }
1065
1066         if ( (tag = ber_scanf( ber, "{i" /*}*/, &type )) == LBER_ERROR ) {
1067                 *text = "LCUP client update control : decoding error";
1068                 return LDAP_PROTOCOL_ERROR;
1069         }
1070
1071         switch( type ) {
1072         case LDAP_CUP_SYNC_ONLY:
1073                 type = SLAP_LCUP_SYNC;
1074                 break;
1075         case LDAP_CUP_SYNC_AND_PERSIST:
1076                 type = SLAP_LCUP_SYNC_AND_PERSIST;
1077                 break;
1078         case LDAP_CUP_PERSIST_ONLY:
1079                 type = SLAP_LCUP_PERSIST;
1080                 break;
1081         default:
1082                 *text = "LCUP client update control : unknown update type";
1083                 return LDAP_PROTOCOL_ERROR;
1084         }
1085
1086         if ( (tag = ber_peek_tag( ber, &len )) == LBER_DEFAULT ) {
1087                 *text = "LCUP client update control : decoding error";
1088                 return LDAP_PROTOCOL_ERROR;
1089         }
1090
1091         if ( tag == LDAP_CUP_TAG_INTERVAL ) {
1092                 if ( (tag = ber_scanf( ber, "i", &interval )) == LBER_ERROR ) {
1093                         *text = "LCUP client update control : decoding error";
1094                         return LDAP_PROTOCOL_ERROR;
1095                 }
1096
1097                 if ( interval <= 0 ) {
1098                         /* server chooses interval */
1099                         interval = LDAP_CUP_DEFAULT_SEND_COOKIE_INTERVAL;
1100                 }
1101
1102         } else {
1103                 /* server chooses interval */
1104                 interval = LDAP_CUP_DEFAULT_SEND_COOKIE_INTERVAL;
1105         }
1106
1107         if ( (tag = ber_peek_tag( ber, &len )) == LBER_DEFAULT ) {
1108                 *text = "LCUP client update control : decoding error";
1109                 return LDAP_PROTOCOL_ERROR;
1110         }
1111
1112         if ( tag == LDAP_CUP_TAG_COOKIE ) {
1113                 if ( (tag = ber_scanf( ber, /*{*/ "{mm}}",
1114                         &scheme, &cookie )) == LBER_ERROR )
1115                 {
1116                         *text = "LCUP client update control : decoding error";
1117                         return LDAP_PROTOCOL_ERROR;
1118                 }
1119         }
1120
1121         /* TODO : Cookie Scheme Validation */
1122 #if 0
1123         if ( lcup_cookie_scheme_validate(scheme) != LDAP_SUCCESS ) {
1124                 *text = "Unsupported LCUP cookie scheme";
1125                 return LCUP_UNSUPPORTED_SCHEME;
1126         }
1127
1128         if ( lcup_cookie_validate(scheme, cookie) != LDAP_SUCCESS ) {
1129                 *text = "Invalid LCUP cookie";
1130                 return LCUP_INVALID_COOKIE;
1131         }
1132 #endif
1133
1134         ber_dupbv( &op->o_clientupdate_state, &cookie );
1135
1136         (void) ber_free( ber, 1 );
1137
1138         op->o_clientupdate_type = (char) type;
1139         op->o_clientupdate_interval = interval;
1140
1141         op->o_clientupdate = ctrl->ldctl_iscritical
1142                 ? SLAP_CRITICAL_CONTROL
1143                 : SLAP_NONCRITICAL_CONTROL;
1144
1145         return LDAP_SUCCESS;
1146 }
1147 #endif
1148
1149 #ifdef LDAP_SYNC
1150 static int parseLdupSync (
1151         Connection *conn,
1152         Operation *op,
1153         LDAPControl *ctrl,
1154         const char **text )
1155 {
1156         ber_tag_t tag;
1157         BerElement *ber;
1158         ber_int_t mode;
1159         ber_len_t len;
1160         struct berval cookie = { 0, NULL };
1161
1162         if ( op->o_sync != SLAP_NO_CONTROL ) {
1163                 *text = "LDAP Sync control specified multiple times";
1164                 return LDAP_PROTOCOL_ERROR;
1165         }
1166
1167 #ifdef LDAP_CLIENT_UPDATE
1168         if ( op->o_clientupdate != SLAP_NO_CONTROL ) {
1169                 *text = "LDAP Sync and LDAP Client Update controls used together";
1170                 return LDAP_PROTOCOL_ERROR;
1171         }
1172 #endif
1173
1174         if ( ctrl->ldctl_value.bv_len == 0 ) {
1175                 *text = "LDAP Sync control value is empty (or absent)";
1176                 return LDAP_PROTOCOL_ERROR;
1177         }
1178
1179         /* Parse the control value
1180          *      syncRequestValue ::= SEQUENCE {
1181          *              mode   ENUMERATED {
1182          *                      -- 0 unused
1183          *                      refreshOnly             (1),
1184          *                      -- 2 reserved
1185          *                      refreshAndPersist       (3)
1186          *              },
1187          *              cookie  syncCookie OPTIONAL
1188          *      }
1189          */
1190
1191         ber = ber_init( &ctrl->ldctl_value );
1192         if( ber == NULL ) {
1193                 *text = "internal error";
1194                 return LDAP_OTHER;
1195         }
1196
1197         if ( (tag = ber_scanf( ber, "{i" /*}*/, &mode )) == LBER_ERROR ) {
1198                 *text = "LDAP Sync control : mode decoding error";
1199                 return LDAP_PROTOCOL_ERROR;
1200         }
1201
1202         switch( mode ) {
1203         case LDAP_SYNC_REFRESH_ONLY:
1204                 mode = SLAP_SYNC_REFRESH;
1205                 break;
1206         case LDAP_SYNC_REFRESH_AND_PERSIST:
1207                 mode = SLAP_SYNC_REFRESH_AND_PERSIST;
1208                 break;
1209         default:
1210                 *text = "LDAP Sync control : unknown update mode";
1211                 return LDAP_PROTOCOL_ERROR;
1212         }
1213
1214         tag = ber_peek_tag( ber, &len );
1215
1216         if ( tag == LDAP_SYNC_TAG_COOKIE ) {
1217                 if (( ber_scanf( ber, /*{*/ "m}",
1218                                         &cookie )) == LBER_ERROR ) {
1219                         *text = "LDAP Sync control : cookie decoding error";
1220                         return LDAP_PROTOCOL_ERROR;
1221                 }
1222         } else {
1223                 if (( ber_scanf( ber, /*{*/ "}")) == LBER_ERROR ) {
1224                         *text = "LDAP Sync control : decoding error";
1225                         return LDAP_PROTOCOL_ERROR;
1226                 }
1227                 cookie.bv_len = 0;
1228                 cookie.bv_val = NULL;
1229         }
1230
1231         /* TODO : Cookie Scheme Validation */
1232 #if 0
1233         if ( lcup_cookie_scheme_validate(scheme) != LDAP_SUCCESS ) {
1234                 *text = "Unsupported LCUP cookie scheme";
1235                 return LCUP_UNSUPPORTED_SCHEME;
1236         }
1237
1238         if ( lcup_cookie_validate(scheme, cookie) != LDAP_SUCCESS ) {
1239                 *text = "Invalid LCUP cookie";
1240                 return LCUP_INVALID_COOKIE;
1241         }
1242 #endif
1243
1244         ber_dupbv( &op->o_sync_state, &cookie );
1245
1246         (void) ber_free( ber, 1 );
1247
1248         op->o_sync_mode = (char) mode;
1249
1250         op->o_sync = ctrl->ldctl_iscritical
1251                 ? SLAP_CRITICAL_CONTROL
1252                 : SLAP_NONCRITICAL_CONTROL;
1253
1254         return LDAP_SUCCESS;
1255 }
1256 #endif