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

   1 /* slapi_overlay.c - SLAPI overlay */
   2 /* $OpenLDAP$ */
   3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
   4  *
   5  * Copyright 2001-2005 The OpenLDAP Foundation.
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted only as authorized by the OpenLDAP
  10  * Public License.
  11  *
  12  * A copy of this license is available in the file LICENSE in the
  13  * top-level directory of the distribution or, alternatively, at
  14  * <http://www.OpenLDAP.org/license.html>.
  15  */
  16 /* ACKNOWLEDGEMENTS:
  17  * This work was initially developed by Luke Howard for inclusion
  18  * in OpenLDAP Software.
  19  */
  20
  21 #include "portable.h"
  22
  23 #include <stdio.h>
  24
  25 #include <ac/string.h>
  26 #include <ac/socket.h>
  27
  28 #include "slap.h"
  29 #include "slapi.h"
  30
  31 #ifdef LDAP_SLAPI
  32
  33 static slap_overinst slapi;
  34
  35 static int slapi_over_response( Operation *op, SlapReply *rs );
  36 static int slapi_over_cleanup( Operation *op, SlapReply *rs );
  37
  38 static Slapi_PBlock *
  39 slapi_over_pblock_new( Operation *op, SlapReply *rs )
  40 {
  41         Slapi_PBlock            *pb;
  42
  43         pb = slapi_pblock_new();
  44         pb->pb_op = op;
  45         pb->pb_conn = op->o_conn;
  46         pb->pb_rs = rs;
  47         pb->pb_intop = 0;
  48
  49         PBLOCK_ASSERT_OP( pb, op->o_tag );
  50
  51         return pb;
  52 }
  53
  54 static int
  55 slapi_op_internal_p( Operation *op, SlapReply *rs, slap_callback *cb )
  56 {
  57         int                     internal_op = 0;
  58         Slapi_PBlock            *pb = NULL;
  59         slap_callback           *pcb;
  60
  61         /*
  62          * Abstraction violating check for SLAPI internal operations
  63          * allows pblock to remain consistent when invoking internal
  64          * op plugins
  65          */
  66         for ( pcb = op->o_callback; pcb != NULL; pcb = pcb->sc_next ) {
  67                 if ( pcb->sc_response == slapi_int_response ) {
  68                         pb = (Slapi_PBlock *)pcb->sc_private;
  69                         PBLOCK_ASSERT_INTOP( pb, 0 );
  70                         internal_op = 1;
  71                         break;
  72                 }
  73         }
  74
  75         if ( cb != NULL ) {
  76                 if ( pb == NULL ) {
  77                         pb = slapi_over_pblock_new( op, rs );
  78                 }
  79
  80                 cb->sc_response = slapi_over_response;
  81                 cb->sc_cleanup = slapi_over_cleanup;
  82                 cb->sc_private = pb;
  83                 cb->sc_next = op->o_callback;
  84                 op->o_callback = cb;
  85         }
  86
  87         return internal_op;
  88 }
  89
  90 static int
  91 slapi_over_compute_output(
  92         computed_attr_context *c,
  93         Slapi_Attr *attribute,
  94         Slapi_Entry *entry
  95 )
  96 {
  97         Attribute               **a;
  98         AttributeDescription    *desc;
  99         SlapReply               *rs = (SlapReply *)c->cac_private;
 100
 101         if ( c == NULL || attribute == NULL || entry == NULL ) {
 102                 return 0;
 103         }
 104
 105         assert( rs->sr_entry == entry );
 106
 107         desc = attribute->a_desc;
 108
 109         if ( rs->sr_attrs == NULL ) {
 110                 /* All attrs request, skip operational attributes */
 111                 if ( is_at_operational( desc->ad_type ) ) {
 112                         return 0;
 113                 }
 114         } else {
 115                 /* Specific attributes requested */
 116                 if ( is_at_operational( desc->ad_type ) ) {
 117                         if ( !SLAP_OPATTRS( rs->sr_attr_flags ) &&
 118                              !ad_inlist( desc, rs->sr_attrs ) ) {
 119                                 return 0;
 120                         }
 121                 } else {
 122                         if ( !SLAP_USERATTRS( rs->sr_attr_flags ) &&
 123                              !ad_inlist( desc, rs->sr_attrs ) ) {
 124                                 return 0;
 125                         }
 126                 }
 127         }
 128
 129         /* XXX perhaps we should check for existing attributes and merge */
 130         for ( a = &rs->sr_operational_attrs; *a != NULL; a = &(*a)->a_next )
 131                 ;
 132
 133         *a = slapi_attr_dup( attribute );
 134
 135         return 0;
 136 }
 137
 138 static int
 139 slapi_over_aux_operational( Operation *op, SlapReply *rs )
 140 {
 141         /* Support for computed attribute plugins */
 142         computed_attr_context    ctx;
 143         AttributeName           *anp;
 144
 145         if ( slapi_op_internal_p( op, rs, NULL ) ) {
 146                 return SLAP_CB_CONTINUE;
 147         }
 148
 149         ctx.cac_pb = slapi_over_pblock_new( op, rs );
 150         ctx.cac_op = op;
 151         ctx.cac_private = rs;
 152
 153         if ( rs->sr_entry != NULL ) {
 154                 /*
 155                  * For each client requested attribute, call the plugins.
 156                  */
 157                 if ( rs->sr_attrs != NULL ) {
 158                         for ( anp = rs->sr_attrs; anp->an_name.bv_val != NULL; anp++ ) {
 159                                 if ( compute_evaluator( &ctx, anp->an_name.bv_val,
 160                                         rs->sr_entry, slapi_over_compute_output ) == 1 ) {
 161                                         break;
 162                                 }
 163                         }
 164                 } else {
 165                         /*
 166                          * Technically we shouldn't be returning operational attributes
 167                          * when the user requested only user attributes. We'll let the
 168                          * plugin decide whether to be naughty or not.
 169                          */
 170                         compute_evaluator( &ctx, "*", rs->sr_entry, slapi_over_compute_output );
 171                 }
 172         }
 173
 174         slapi_pblock_destroy( ctx.cac_pb );
 175
 176         return SLAP_CB_CONTINUE;
 177 }
 178
 179 static int
 180 slapi_over_search( Operation *op, SlapReply *rs, int type )
 181 {
 182         int                     rc;
 183         Slapi_PBlock            *pb;
 184
 185         assert( rs->sr_type == REP_SEARCH || rs->sr_type == REP_SEARCHREF );
 186
 187         /* create a new pblock to not trample on result controls */
 188         pb = slapi_over_pblock_new( op, rs );
 189
 190         rc = slapi_int_call_plugins( op->o_bd, type, pb );
 191         if ( rc >= 0 ) /* 1 means no plugins called */
 192                 rc = SLAP_CB_CONTINUE;
 193         else
 194                 rc = LDAP_SUCCESS; /* confusing: don't abort, but don't send */
 195
 196         slapi_pblock_destroy(pb);
 197
 198         return rc;
 199 }
 200
 201 /*
 202  * Call pre- and post-result plugins
 203  */
 204 static int
 205 slapi_over_result( Operation *op, SlapReply *rs, int type )
 206 {
 207         Slapi_PBlock            *pb = SLAPI_OPERATION_PBLOCK( op );
 208
 209         assert( rs->sr_type == REP_RESULT );
 210
 211         slapi_int_call_plugins( op->o_bd, type, pb );
 212
 213         return SLAP_CB_CONTINUE;
 214 }
 215
 216
 217 static int
 218 slapi_op_bind_callback( Operation *op, SlapReply *rs, int prc )
 219 {
 220         switch ( prc ) {
 221         case SLAPI_BIND_SUCCESS:
 222                 /* Continue with backend processing */
 223                 break;
 224         case SLAPI_BIND_FAIL:
 225                 /* Failure, frontend (that's us) sends result */
 226                 rs->sr_err = LDAP_INVALID_CREDENTIALS;
 227                 send_ldap_result( op, rs );
 228                 return rs->sr_err;
 229                 break;
 230         case SLAPI_BIND_ANONYMOUS: /* undocumented */
 231         default: /* plugin sent result or no plugins called */
 232                 BER_BVZERO( &op->orb_edn );
 233
 234                 if ( rs->sr_err == LDAP_SUCCESS ) {
 235                         /*
 236                          * Plugin will have called slapi_pblock_set(LDAP_CONN_DN) which
 237                          * will have set conn->c_dn and conn->c_ndn
 238                          */
 239                         if ( BER_BVISNULL( &op->o_conn->c_ndn ) && prc == 1 ) {
 240                                 /* No plugins were called; continue processing */
 241                                 return LDAP_SUCCESS;
 242                         }
 243                         ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
 244                         if ( !BER_BVISEMPTY( &op->o_conn->c_ndn ) ) {
 245                                 ber_len_t max = sockbuf_max_incoming_auth;
 246                                 ber_sockbuf_ctrl( op->o_conn->c_sb,
 247                                         LBER_SB_OPT_SET_MAX_INCOMING, &max );
 248                         }
 249                         ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
 250
 251                         /* log authorization identity */
 252                         Statslog( LDAP_DEBUG_STATS,
 253                                 "%s BIND dn=\"%s\" mech=%s (SLAPI) ssf=0\n",
 254                                 op->o_log_prefix,
 255                                 BER_BVISNULL( &op->o_conn->c_dn )
 256                                         ? "<empty>" : op->o_conn->c_dn.bv_val,
 257                                 op->orb_tmp_mech.bv_val, 0, 0 );
 258
 259                         return -1;
 260                 }
 261                 break;
 262         }
 263
 264         return rs->sr_err;
 265 }
 266
 267 static int
 268 slapi_op_search_callback( Operation *op, SlapReply *rs, int prc )
 269 {
 270         Slapi_PBlock            *pb = SLAPI_OPERATION_PBLOCK( op );
 271
 272         /* check preoperation result code */
 273         if ( prc < 0 ) {
 274                 return rs->sr_err;
 275         }
 276
 277         rs->sr_err = LDAP_SUCCESS;
 278
 279         if ( slapi_int_call_plugins( op->o_bd, SLAPI_PLUGIN_COMPUTE_SEARCH_REWRITER_FN, pb ) == 0 ) {
 280                 /*
 281                  * The plugin can set the SLAPI_SEARCH_FILTER.
 282                  * SLAPI_SEARCH_STRFILER is not normative.
 283                  */
 284                 op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
 285                 filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
 286         }
 287
 288         return LDAP_SUCCESS;
 289 }
 290
 291 struct slapi_op_info {
 292         int soi_preop;                  /* preoperation plugin parameter */
 293         int soi_postop;                 /* postoperation plugin parameter */
 294         int soi_internal_preop;         /* internal preoperation plugin parameter */
 295         int soi_internal_postop;        /* internal postoperation plugin parameter */
 296         int (*soi_callback)(Operation *, SlapReply *, int); /* preoperation result handler */
 297 } slapi_op_dispatch_table[] = {
 298         {
 299                 SLAPI_PLUGIN_PRE_BIND_FN,
 300                 SLAPI_PLUGIN_POST_BIND_FN,
 301                 0,
 302                 0,
 303                 slapi_op_bind_callback
 304         },
 305         {
 306                 SLAPI_PLUGIN_PRE_UNBIND_FN,
 307                 SLAPI_PLUGIN_POST_UNBIND_FN,
 308                 0,
 309                 0,
 310                 NULL
 311         },
 312         {
 313                 SLAPI_PLUGIN_PRE_SEARCH_FN,
 314                 SLAPI_PLUGIN_POST_SEARCH_FN,
 315                 0,
 316                 0,
 317                 slapi_op_search_callback
 318         },
 319         {
 320                 SLAPI_PLUGIN_PRE_COMPARE_FN,
 321                 SLAPI_PLUGIN_POST_COMPARE_FN,
 322                 0,
 323                 0,
 324                 NULL
 325         },
 326         {
 327                 SLAPI_PLUGIN_PRE_MODIFY_FN,
 328                 SLAPI_PLUGIN_POST_MODIFY_FN,
 329                 SLAPI_PLUGIN_INTERNAL_PRE_MODIFY_FN,
 330                 SLAPI_PLUGIN_INTERNAL_POST_MODIFY_FN,
 331                 NULL
 332         },
 333         {
 334                 SLAPI_PLUGIN_PRE_MODRDN_FN,
 335                 SLAPI_PLUGIN_POST_MODRDN_FN,
 336                 SLAPI_PLUGIN_INTERNAL_PRE_MODRDN_FN,
 337                 SLAPI_PLUGIN_INTERNAL_POST_MODRDN_FN,
 338                 NULL
 339         },
 340         {
 341                 SLAPI_PLUGIN_PRE_ADD_FN,
 342                 SLAPI_PLUGIN_POST_ADD_FN,
 343                 SLAPI_PLUGIN_INTERNAL_PRE_ADD_FN,
 344                 SLAPI_PLUGIN_INTERNAL_POST_ADD_FN,
 345                 NULL
 346         },
 347         {
 348                 SLAPI_PLUGIN_PRE_DELETE_FN,
 349                 SLAPI_PLUGIN_POST_DELETE_FN,
 350                 SLAPI_PLUGIN_INTERNAL_PRE_DELETE_FN,
 351                 SLAPI_PLUGIN_INTERNAL_POST_DELETE_FN,
 352                 NULL
 353         },
 354         {
 355                 SLAPI_PLUGIN_PRE_ABANDON_FN,
 356                 SLAPI_PLUGIN_POST_ABANDON_FN,
 357                 0,
 358                 0,
 359                 NULL
 360         },
 361         {
 362                 0,
 363                 0,
 364                 0,
 365                 0,
 366                 NULL
 367         }
 368 };
 369
 370 slap_operation_t
 371 slapi_tag2op( ber_tag_t tag )
 372 {
 373         slap_operation_t op;
 374
 375         switch ( tag ) {
 376         case LDAP_REQ_BIND:
 377                 op = op_bind;
 378                 break;
 379         case LDAP_REQ_ADD:
 380                 op = op_add;
 381                 break;
 382         case LDAP_REQ_DELETE:
 383                 op = op_delete;
 384                 break;
 385         case LDAP_REQ_MODRDN:
 386                 op = op_modrdn;
 387                 break;
 388         case LDAP_REQ_MODIFY:
 389                 op = op_modify;
 390                 break;
 391         case LDAP_REQ_COMPARE:
 392                 op = op_compare;
 393                 break;
 394         case LDAP_REQ_SEARCH:
 395                 op = op_search;
 396                 break;
 397         case LDAP_REQ_UNBIND:
 398                 op = op_unbind;
 399                 break;
 400         default:
 401                 op = op_last;
 402                 break;
 403         }
 404
 405         return op;
 406 }
 407
 408 /* Add SLAPI_RESCONTROLS to rs->sr_ctrls, with care, because
 409  * rs->sr_ctrls could be allocated on the stack */
 410 static int
 411 slapi_over_merge_controls( Operation *op, SlapReply *rs )
 412 {
 413         Slapi_PBlock            *pb = SLAPI_OPERATION_PBLOCK( op );
 414         LDAPControl             **ctrls = NULL;
 415         LDAPControl             **slapi_ctrls = NULL;
 416         size_t                  n_slapi_ctrls = 0;
 417         size_t                  n_rs_ctrls = 0;
 418         size_t                  i;
 419
 420         slapi_pblock_get( pb, SLAPI_RESCONTROLS, (void **)&slapi_ctrls );
 421
 422         n_slapi_ctrls = slapi_int_count_controls( slapi_ctrls );
 423         n_rs_ctrls = slapi_int_count_controls( rs->sr_ctrls );
 424
 425         slapi_pblock_set( pb, SLAPI_X_OLD_RESCONTROLS, (void *)rs->sr_ctrls );
 426
 427         if ( n_slapi_ctrls == 0 )
 428                 return LDAP_SUCCESS; /* no SLAPI controls */
 429
 430         ctrls = (LDAPControl **) op->o_tmpalloc(
 431                 ( n_slapi_ctrls + n_rs_ctrls + 1 ) * sizeof(LDAPControl *),
 432                 op->o_tmpmemctx );
 433
 434         for ( i = 0; i < n_slapi_ctrls; i++ ) {
 435                 ctrls[i] = slapi_ctrls[i];
 436         }
 437         if ( rs->sr_ctrls != NULL ) {
 438                 for ( i = 0; i < n_rs_ctrls; i++ ) {
 439                         ctrls[n_slapi_ctrls + i] = rs->sr_ctrls[i];
 440                 }
 441         }
 442
 443         rs->sr_ctrls = ctrls;
 444
 445         return LDAP_SUCCESS;
 446 }
 447
 448 static int
 449 slapi_over_unmerge_controls( Operation *op, SlapReply *rs )
 450 {
 451         Slapi_PBlock            *pb = SLAPI_OPERATION_PBLOCK( op );
 452         LDAPControl             **rs_ctrls = NULL;
 453
 454         slapi_pblock_get( pb, SLAPI_X_OLD_RESCONTROLS, (void **)&rs_ctrls );
 455
 456         if ( rs->sr_ctrls == NULL || rs->sr_ctrls == rs_ctrls ) {
 457                 /* no copying done */
 458                 return LDAP_SUCCESS;
 459         }
 460
 461         op->o_tmpfree( rs->sr_ctrls, op->o_tmpmemctx );
 462         rs->sr_ctrls = rs_ctrls;
 463
 464         return LDAP_SUCCESS;
 465 }
 466
 467 static int
 468 slapi_over_response( Operation *op, SlapReply *rs )
 469 {
 470         Slapi_PBlock            *pb = SLAPI_OPERATION_PBLOCK( op );
 471         int                     rc = SLAP_CB_CONTINUE;
 472
 473         if ( pb->pb_intop == 0 ) {
 474                 switch ( rs->sr_type ) {
 475                 case REP_RESULT:
 476                         rc = slapi_over_result( op, rs, SLAPI_PLUGIN_PRE_RESULT_FN );
 477                         break;
 478                 case REP_SEARCH:
 479                         rc = slapi_over_search( op, rs, SLAPI_PLUGIN_PRE_ENTRY_FN );
 480                         break;
 481                 case REP_SEARCHREF:
 482                         rc = slapi_over_search( op, rs, SLAPI_PLUGIN_PRE_REFERRAL_FN );
 483                         break;
 484                 default:
 485                         break;
 486                 }
 487         }
 488
 489         slapi_over_merge_controls( op, rs );
 490
 491         return rc;
 492 }
 493
 494 static int
 495 slapi_over_cleanup( Operation *op, SlapReply *rs )
 496 {
 497         Slapi_PBlock            *pb = SLAPI_OPERATION_PBLOCK( op );
 498         int                     rc = SLAP_CB_CONTINUE;
 499
 500         slapi_over_unmerge_controls( op, rs );
 501
 502         if ( pb->pb_intop == 0 ) {
 503                 switch ( rs->sr_type ) {
 504                 case REP_RESULT:
 505                         rc = slapi_over_result( op, rs, SLAPI_PLUGIN_POST_RESULT_FN );
 506                         break;
 507                 case REP_SEARCH:
 508                         rc = slapi_over_search( op, rs, SLAPI_PLUGIN_POST_ENTRY_FN );
 509                         break;
 510                 case REP_SEARCHREF:
 511                         rc = slapi_over_search( op, rs, SLAPI_PLUGIN_POST_REFERRAL_FN );
 512                         break;
 513                 default:
 514                         break;
 515                 }
 516         }
 517
 518         return rc;
 519 }
 520
 521 static int
 522 slapi_op_func( Operation *op, SlapReply *rs )
 523 {
 524         Slapi_PBlock            *pb;
 525         slap_operation_t        which;
 526         struct slapi_op_info    *opinfo;
 527         int                     rc;
 528         slap_overinfo           *oi;
 529         slap_overinst           *on;
 530         slap_callback           cb;
 531         int                     internal_op;
 532         int                     preop_type, postop_type;
 533
 534         if ( !slapi_plugins_used )
 535                 return SLAP_CB_CONTINUE;
 536
 537         /*
 538          * Find the SLAPI operation information for this LDAP
 539          * operation; this will contain the preop and postop
 540          * plugin types, as well as optional callbacks for
 541          * setting up the SLAPI environment.
 542          */
 543         which = slapi_tag2op( op->o_tag );
 544         if ( which >= op_last ) {
 545                 /* invalid operation, but let someone else deal with it */
 546                 return SLAP_CB_CONTINUE;
 547         }
 548
 549         opinfo = &slapi_op_dispatch_table[which];
 550         if ( opinfo == NULL ) {
 551                 /* no SLAPI plugin types for this operation */
 552                 return SLAP_CB_CONTINUE;
 553         }
 554
 555         internal_op = slapi_op_internal_p( op, rs, &cb );
 556
 557         if ( internal_op ) {
 558                 preop_type = opinfo->soi_internal_preop;
 559                 postop_type = opinfo->soi_internal_postop;
 560         } else {
 561                 preop_type = opinfo->soi_preop;
 562                 postop_type = opinfo->soi_postop;
 563         }
 564
 565         if ( preop_type == 0 ) {
 566                 /* no SLAPI plugin types for this operation */
 567                 pb = NULL;
 568                 rc = SLAP_CB_CONTINUE;
 569                 goto cleanup;
 570         }
 571
 572         pb = SLAPI_OPERATION_PBLOCK( op );
 573
 574         rc = slapi_int_call_plugins( op->o_bd, preop_type, pb );
 575
 576         /*
 577          * soi_callback is responsible for examining the result code
 578          * of the preoperation plugin and determining whether to
 579          * abort. This is needed because of special SLAPI behaviour
 580          e with bind preoperation plugins.
 581          *
 582          * The soi_callback function is also used to reset any values
 583          * returned from the preoperation plugin before calling the
 584          * backend (for the success case).
 585          */
 586         if ( opinfo->soi_callback == NULL ) {
 587                 /* default behaviour is preop plugin can abort operation */
 588                 if ( rc < 0 ) {
 589                         rc = rs->sr_err;
 590                         goto cleanup;
 591                 }
 592         } else {
 593                 rc = (opinfo->soi_callback)( op, rs, rc );
 594                 if ( rc )
 595                         goto cleanup;
 596         }
 597
 598         /*
 599          * Call actual backend (or next overlay in stack). We need to
 600          * do this rather than returning SLAP_CB_CONTINUE and calling
 601          * postoperation plugins in a response handler to match the
 602          * behaviour of SLAPI in OpenLDAP 2.2, where postoperation
 603          * plugins are called after the backend has completely
 604          * finished processing the operation.
 605          */
 606         on = (slap_overinst *)op->o_bd->bd_info;
 607         oi = on->on_info;
 608
 609         rc = overlay_op_walk( op, rs, which, oi, on->on_next );
 610
 611         /*
 612          * Call postoperation plugins
 613          */
 614         slapi_int_call_plugins( op->o_bd, postop_type, pb );
 615
 616 cleanup:
 617         if ( !internal_op ) {
 618                 slapi_pblock_destroy(pb);
 619                 cb.sc_private = NULL;
 620         }
 621
 622         op->o_callback = cb.sc_next;
 623
 624         return rc;
 625 }
 626
 627 static int
 628 slapi_over_extended( Operation *op, SlapReply *rs )
 629 {
 630         Slapi_PBlock    *pb;
 631         SLAPI_FUNC      callback;
 632         int             rc;
 633         int             internal_op;
 634         slap_callback   cb;
 635
 636         slapi_int_get_extop_plugin( &op->ore_reqoid, &callback );
 637         if ( callback == NULL ) {
 638                 return SLAP_CB_CONTINUE;
 639         }
 640
 641         internal_op = slapi_op_internal_p( op, rs, &cb );
 642         if ( internal_op ) {
 643                 return SLAP_CB_CONTINUE;
 644         }
 645
 646         pb = SLAPI_OPERATION_PBLOCK( op );
 647
 648         rc = (*callback)( pb );
 649         if ( rc == SLAPI_PLUGIN_EXTENDED_SENT_RESULT ) {
 650                 slapi_pblock_destroy( pb );
 651                 return rc;
 652         } else if ( rc == SLAPI_PLUGIN_EXTENDED_NOT_HANDLED ) {
 653                 slapi_pblock_destroy( pb );
 654                 return SLAP_CB_CONTINUE;
 655         }
 656
 657         assert( rs->sr_rspoid != NULL );
 658
 659         send_ldap_extended( op, rs );
 660
 661 #if 0
 662         slapi_ch_free_string( (char **)&rs->sr_rspoid );
 663 #endif
 664
 665         if ( rs->sr_rspdata != NULL )
 666                 ber_bvfree( rs->sr_rspdata );
 667
 668         slapi_pblock_destroy( pb );
 669
 670         return rs->sr_err;
 671 }
 672
 673 static int
 674 slapi_over_access_allowed(
 675         Operation               *op,
 676         Entry                   *e,
 677         AttributeDescription    *desc,
 678         struct berval           *val,
 679         slap_access_t           access,
 680         AccessControlState      *state,
 681         slap_mask_t             *maskp )
 682 {
 683         int                     rc;
 684         Slapi_PBlock            *pb;
 685         slap_callback           cb;
 686         int                     internal_op;
 687         SlapReply               rs = { REP_RESULT };
 688
 689         internal_op = slapi_op_internal_p( op, &rs, &cb );
 690
 691         cb.sc_response = NULL;
 692         cb.sc_cleanup = NULL;
 693
 694         pb = SLAPI_OPERATION_PBLOCK( op );
 695
 696         rc = slapi_int_access_allowed( op, e, desc, val, access, state );
 697         if ( rc ) {
 698                 rc = SLAP_CB_CONTINUE;
 699         }
 700
 701         op->o_callback = cb.sc_next;
 702
 703         if ( !internal_op )
 704                 slapi_pblock_destroy( pb );
 705
 706         return rc;
 707 }
 708
 709 static int
 710 slapi_over_acl_group(
 711         Operation               *op,
 712         Entry                   *target,
 713         struct berval           *gr_ndn,
 714         struct berval           *op_ndn,
 715         ObjectClass             *group_oc,
 716         AttributeDescription    *group_at )
 717 {
 718         Slapi_Entry             *e;
 719         int                     rc;
 720         Slapi_PBlock            *pb;
 721         BackendDB               *be = op->o_bd;
 722         GroupAssertion          *g;
 723         SlapReply               rs = { REP_RESULT };
 724
 725         op->o_bd = select_backend( gr_ndn, 0, 0 );
 726
 727         for ( g = op->o_groups; g; g = g->ga_next ) {
 728                 if ( g->ga_be != op->o_bd || g->ga_oc != group_oc ||
 729                         g->ga_at != group_at || g->ga_len != gr_ndn->bv_len )
 730                 {
 731                         continue;
 732                 }
 733                 if ( strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0 ) {
 734                         break;
 735                 }
 736         }
 737         if ( g != NULL ) {
 738                 rc = g->ga_res;
 739                 goto done;
 740         }
 741
 742         if ( target != NULL && dn_match( &target->e_nname, gr_ndn ) ) {
 743                 e = target;
 744                 rc = 0;
 745         } else {
 746                 rc = be_entry_get_rw( op, gr_ndn, group_oc, group_at, 0, &e );
 747         }
 748         if ( e != NULL ) {
 749                 int                     internal_op;
 750                 slap_callback           cb;
 751
 752                 internal_op = slapi_op_internal_p( op, &rs, &cb );
 753
 754                 cb.sc_response = NULL;
 755                 cb.sc_cleanup = NULL;
 756
 757                 pb = SLAPI_OPERATION_PBLOCK( op );
 758
 759                 slapi_pblock_set( pb, SLAPI_X_GROUP_ENTRY,        (void *)e );
 760                 slapi_pblock_set( pb, SLAPI_X_GROUP_OPERATION_DN, (void *)op_ndn->bv_val );
 761                 slapi_pblock_set( pb, SLAPI_X_GROUP_ATTRIBUTE,    (void *)group_at->ad_cname.bv_val );
 762                 slapi_pblock_set( pb, SLAPI_X_GROUP_TARGET_ENTRY, (void *)target );
 763
 764                 rc = slapi_int_call_plugins( op->o_bd, SLAPI_X_PLUGIN_PRE_GROUP_FN, pb );
 765                 if ( rc >= 0 ) /* 1 means no plugins called */
 766                         rc = SLAP_CB_CONTINUE;
 767                 else
 768                         rc = pb->pb_rs->sr_err;
 769
 770                 slapi_pblock_delete_param( pb, SLAPI_X_GROUP_ENTRY );
 771                 slapi_pblock_delete_param( pb, SLAPI_X_GROUP_OPERATION_DN );
 772                 slapi_pblock_delete_param( pb, SLAPI_X_GROUP_ATTRIBUTE );
 773                 slapi_pblock_delete_param( pb, SLAPI_X_GROUP_TARGET_ENTRY );
 774
 775                 if ( !internal_op )
 776                         slapi_pblock_destroy( pb );
 777
 778                 if ( e != target ) {
 779                         be_entry_release_r( op, e );
 780                 }
 781         } else {
 782                 rc = LDAP_NO_SUCH_OBJECT; /* return SLAP_CB_CONTINUE for correctness? */
 783         }
 784
 785         if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache &&
 786              rc != SLAP_CB_CONTINUE ) {
 787                 g = op->o_tmpalloc( sizeof( GroupAssertion ) + gr_ndn->bv_len,
 788                         op->o_tmpmemctx );
 789                 g->ga_be = op->o_bd;
 790                 g->ga_oc = group_oc;
 791                 g->ga_at = group_at;
 792                 g->ga_res = rc;
 793                 g->ga_len = gr_ndn->bv_len;
 794                 strcpy( g->ga_ndn, gr_ndn->bv_val );
 795                 g->ga_next = op->o_groups;
 796                 op->o_groups = g;
 797         }
 798         /*
 799          * XXX don't call POST_GROUP_FN, I have no idea what the point of
 800          * that plugin function was anyway
 801          */
 802 done:
 803         op->o_bd = be;
 804         return rc;
 805 }
 806
 807 int
 808 slapi_int_overlay_init()
 809 {
 810         memset( &slapi, 0, sizeof(slapi) );
 811
 812         slapi.on_bi.bi_type = SLAPI_OVERLAY_NAME;
 813
 814         slapi.on_bi.bi_op_bind          = slapi_op_func;
 815         slapi.on_bi.bi_op_unbind        = slapi_op_func;
 816         slapi.on_bi.bi_op_search        = slapi_op_func;
 817         slapi.on_bi.bi_op_compare       = slapi_op_func;
 818         slapi.on_bi.bi_op_modify        = slapi_op_func;
 819         slapi.on_bi.bi_op_modrdn        = slapi_op_func;
 820         slapi.on_bi.bi_op_add           = slapi_op_func;
 821         slapi.on_bi.bi_op_delete        = slapi_op_func;
 822         slapi.on_bi.bi_op_abandon       = slapi_op_func;
 823         slapi.on_bi.bi_op_cancel        = slapi_op_func;
 824
 825         slapi.on_bi.bi_extended         = slapi_over_extended;
 826         slapi.on_bi.bi_access_allowed   = slapi_over_access_allowed;
 827         slapi.on_bi.bi_operational      = slapi_over_aux_operational;
 828         slapi.on_bi.bi_acl_group        = slapi_over_acl_group;
 829
 830         return overlay_register( &slapi );
 831 }
 832
 833 #endif /* LDAP_SLAPI */