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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
   4  * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
   5  */
   6 /* Portions
   7  * Copyright (c) 1995 Regents of the University of Michigan.
   8  * All rights reserved.
   9  *
  10  * Redistribution and use in source and binary forms are permitted
  11  * provided that this notice is preserved and that due credit is given
  12  * to the University of Michigan at Ann Arbor. The name of the University
  13  * may not be used to endorse or promote products derived from this
  14  * software without specific prior written permission. This software
  15  * is provided ``as is'' without express or implied warranty.
  16  */
  17
  18 #include "portable.h"
  19 #include "slapi_common.h"
  20
  21 #include <stdio.h>
  22
  23 #include <ac/string.h>
  24 #include <ac/socket.h>
  25
  26 #include "ldap_pvt.h"
  27 #include "slap.h"
  28 #include "slapi.h"
  29
  30 int
  31 do_search(
  32     Connection  *conn,  /* where to send results */
  33     Operation   *op     /* info about the op to which we're responding */
  34 ) {
  35         ber_int_t       scope, deref, attrsonly;
  36         ber_int_t       sizelimit, timelimit;
  37         struct berval base = { 0, NULL };
  38         struct berval pbase = { 0, NULL };
  39         struct berval nbase = { 0, NULL };
  40         struct berval   fstr = { 0, NULL };
  41         Filter          *filter = NULL;
  42         AttributeName   *an = NULL;
  43         ber_len_t       siz, off, i;
  44         Backend         *be;
  45         int                     rc;
  46         const char      *text;
  47         int                     manageDSAit;
  48
  49         Slapi_PBlock *pb = op->o_pb;
  50
  51 #ifdef NEW_LOGGING
  52         LDAP_LOG( OPERATION, ENTRY, "do_search: conn %d\n", conn->c_connid, 0, 0 );
  53 #else
  54         Debug( LDAP_DEBUG_TRACE, "do_search\n", 0, 0, 0 );
  55 #endif
  56
  57         /*
  58          * Parse the search request.  It looks like this:
  59          *
  60          *      SearchRequest := [APPLICATION 3] SEQUENCE {
  61          *              baseObject      DistinguishedName,
  62          *              scope           ENUMERATED {
  63          *                      baseObject      (0),
  64          *                      singleLevel     (1),
  65          *                      wholeSubtree    (2)
  66          *              },
  67          *              derefAliases    ENUMERATED {
  68          *                      neverDerefaliases       (0),
  69          *                      derefInSearching        (1),
  70          *                      derefFindingBaseObj     (2),
  71          *                      alwaysDerefAliases      (3)
  72          *              },
  73          *              sizelimit       INTEGER (0 .. 65535),
  74          *              timelimit       INTEGER (0 .. 65535),
  75          *              attrsOnly       BOOLEAN,
  76          *              filter          Filter,
  77          *              attributes      SEQUENCE OF AttributeType
  78          *      }
  79          */
  80
  81         /* baseObject, scope, derefAliases, sizelimit, timelimit, attrsOnly */
  82         if ( ber_scanf( op->o_ber, "{miiiib" /*}*/,
  83                 &base, &scope, &deref, &sizelimit,
  84             &timelimit, &attrsonly ) == LBER_ERROR )
  85         {
  86                 send_ldap_disconnect( conn, op,
  87                         LDAP_PROTOCOL_ERROR, "decoding error" );
  88                 rc = SLAPD_DISCONNECT;
  89                 goto return_results;
  90         }
  91
  92         switch( scope ) {
  93         case LDAP_SCOPE_BASE:
  94         case LDAP_SCOPE_ONELEVEL:
  95         case LDAP_SCOPE_SUBTREE:
  96                 break;
  97         default:
  98                 send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR,
  99                         NULL, "invalid scope", NULL, NULL );
 100                 goto return_results;
 101         }
 102
 103         switch( deref ) {
 104         case LDAP_DEREF_NEVER:
 105         case LDAP_DEREF_FINDING:
 106         case LDAP_DEREF_SEARCHING:
 107         case LDAP_DEREF_ALWAYS:
 108                 break;
 109         default:
 110                 send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR,
 111                         NULL, "invalid deref", NULL, NULL );
 112                 goto return_results;
 113         }
 114
 115         rc = dnPrettyNormal( NULL, &base, &pbase, &nbase );
 116         if( rc != LDAP_SUCCESS ) {
 117 #ifdef NEW_LOGGING
 118                 LDAP_LOG( OPERATION, ERR,
 119                         "do_search: conn %d  invalid dn (%s)\n",
 120                         conn->c_connid, base.bv_val, 0 );
 121 #else
 122                 Debug( LDAP_DEBUG_ANY,
 123                         "do_search: invalid dn (%s)\n", base.bv_val, 0, 0 );
 124 #endif
 125                 send_ldap_result( conn, op, rc = LDAP_INVALID_DN_SYNTAX, NULL,
 126                     "invalid DN", NULL, NULL );
 127                 goto return_results;
 128         }
 129
 130 #ifdef NEW_LOGGING
 131         LDAP_LOG( OPERATION, ARGS, "SRCH \"%s\" %d %d",
 132                 base.bv_val, scope, deref );
 133         LDAP_LOG( OPERATION, ARGS, "    %d %d %d\n",
 134                 sizelimit, timelimit, attrsonly);
 135 #else
 136         Debug( LDAP_DEBUG_ARGS, "SRCH \"%s\" %d %d",
 137                 base.bv_val, scope, deref );
 138         Debug( LDAP_DEBUG_ARGS, "    %d %d %d\n",
 139                 sizelimit, timelimit, attrsonly);
 140 #endif
 141
 142         /* filter - returns a "normalized" version */
 143         rc = get_filter( conn, op->o_ber, &filter, &text );
 144         if( rc != LDAP_SUCCESS ) {
 145                 if( rc == SLAPD_DISCONNECT ) {
 146                         send_ldap_disconnect( conn, op,
 147                                 LDAP_PROTOCOL_ERROR, text );
 148                 } else {
 149                         send_ldap_result( conn, op, rc,
 150                                         NULL, text, NULL, NULL );
 151                 }
 152                 goto return_results;
 153         }
 154         filter2bv( filter, &fstr );
 155
 156 #ifdef NEW_LOGGING
 157         LDAP_LOG( OPERATION, ARGS,
 158                 "do_search: conn %d     filter: %s\n",
 159                 conn->c_connid, fstr.bv_len ? fstr.bv_val : "empty", 0 );
 160 #else
 161         Debug( LDAP_DEBUG_ARGS, "    filter: %s\n",
 162                 fstr.bv_len ? fstr.bv_val : "empty", 0, 0 );
 163 #endif
 164
 165         /* attributes */
 166         siz = sizeof(AttributeName);
 167         off = 0;
 168         if ( ber_scanf( op->o_ber, "{M}}", &an, &siz, off ) == LBER_ERROR ) {
 169                 send_ldap_disconnect( conn, op,
 170                         LDAP_PROTOCOL_ERROR, "decoding attrs error" );
 171                 rc = SLAPD_DISCONNECT;
 172                 goto return_results;
 173         }
 174         for ( i=0; i<siz; i++ ) {
 175                 an[i].an_desc = NULL;
 176                 an[i].an_oc = NULL;
 177                 slap_bv2ad(&an[i].an_name, &an[i].an_desc, &text);
 178         }
 179
 180         if( (rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) {
 181 #ifdef NEW_LOGGING
 182                 LDAP_LOG( OPERATION, INFO,
 183                         "do_search: conn %d  get_ctrls failed (%d)\n",
 184                         conn->c_connid, rc, 0 );
 185 #else
 186                 Debug( LDAP_DEBUG_ANY, "do_search: get_ctrls failed\n", 0, 0, 0 );
 187 #endif
 188
 189                 goto return_results;
 190         }
 191
 192 #ifdef NEW_LOGGING
 193         LDAP_LOG( OPERATION, ARGS,
 194                 "do_search: conn %d     attrs:", conn->c_connid, 0, 0 );
 195 #else
 196         Debug( LDAP_DEBUG_ARGS, "    attrs:", 0, 0, 0 );
 197 #endif
 198
 199         if ( siz != 0 ) {
 200                 for ( i = 0; i<siz; i++ ) {
 201 #ifdef NEW_LOGGING
 202                         LDAP_LOG( OPERATION, ARGS,
 203                                 "do_search: %s", an[i].an_name.bv_val, 0, 0 );
 204 #else
 205                         Debug( LDAP_DEBUG_ARGS, " %s", an[i].an_name.bv_val, 0, 0 );
 206 #endif
 207                 }
 208         }
 209
 210 #ifdef NEW_LOGGING
 211         LDAP_LOG( OPERATION, ARGS, "\n" , 0, 0, 0 );
 212 #else
 213         Debug( LDAP_DEBUG_ARGS, "\n", 0, 0, 0 );
 214 #endif
 215
 216         Statslog( LDAP_DEBUG_STATS,
 217             "conn=%lu op=%lu SRCH base=\"%s\" scope=%d filter=\"%s\"\n",
 218             op->o_connid, op->o_opid, pbase.bv_val, scope, fstr.bv_val );
 219
 220         manageDSAit = get_manageDSAit( op );
 221
 222         if ( scope == LDAP_SCOPE_BASE ) {
 223                 Entry *entry = NULL;
 224
 225                 if ( nbase.bv_len == 0 ) {
 226 #ifdef LDAP_CONNECTIONLESS
 227                         /* Ignore LDAPv2 CLDAP Root DSE queries */
 228                         if (op->o_protocol==LDAP_VERSION2 && conn->c_is_udp) {
 229                                 goto return_results;
 230                         }
 231 #endif
 232                         /* check restrictions */
 233                         rc = backend_check_restrictions( NULL, conn, op, NULL, &text ) ;
 234                         if( rc != LDAP_SUCCESS ) {
 235                                 send_ldap_result( conn, op, rc,
 236                                         NULL, text, NULL, NULL );
 237                                 goto return_results;
 238                         }
 239
 240                         rc = root_dse_info( conn, &entry, &text );
 241
 242                 } else if ( bvmatch( &nbase, &global_schemandn ) ) {
 243                         /* check restrictions */
 244                         rc = backend_check_restrictions( NULL, conn, op, NULL, &text ) ;
 245                         if( rc != LDAP_SUCCESS ) {
 246                                 send_ldap_result( conn, op, rc,
 247                                         NULL, text, NULL, NULL );
 248                                 goto return_results;
 249                         }
 250
 251                         rc = schema_info( &entry, &text );
 252                 }
 253
 254                 if( rc != LDAP_SUCCESS ) {
 255                         send_ldap_result( conn, op, rc,
 256                                 NULL, text, NULL, NULL );
 257                         goto return_results;
 258
 259                 } else if ( entry != NULL ) {
 260                         rc = test_filter( NULL, conn, op,
 261                                 entry, filter );
 262
 263                         if( rc == LDAP_COMPARE_TRUE ) {
 264                                 send_search_entry( NULL, conn, op,
 265                                         entry, an, attrsonly, NULL );
 266                         }
 267                         entry_free( entry );
 268
 269                         send_ldap_result( conn, op, LDAP_SUCCESS,
 270                                 NULL, NULL, NULL, NULL );
 271
 272                         goto return_results;
 273                 }
 274         }
 275
 276         if( !nbase.bv_len && default_search_nbase.bv_len ) {
 277                 ch_free( pbase.bv_val );
 278                 ch_free( nbase.bv_val );
 279
 280                 ber_dupbv( &pbase, &default_search_base );
 281                 ber_dupbv( &nbase, &default_search_nbase );
 282         }
 283
 284         /*
 285          * We could be serving multiple database backends.  Select the
 286          * appropriate one, or send a referral to our "referral server"
 287          * if we don't hold it.
 288          */
 289         if ( (be = select_backend( &nbase, manageDSAit, 1 )) == NULL ) {
 290                 BerVarray ref = referral_rewrite( default_referral,
 291                         NULL, &pbase, scope );
 292
 293                 send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 294                         NULL, NULL, ref ? ref : default_referral, NULL );
 295
 296                 ber_bvarray_free( ref );
 297                 goto return_results;
 298         }
 299
 300         /* check restrictions */
 301         rc = backend_check_restrictions( be, conn, op, NULL, &text ) ;
 302         if( rc != LDAP_SUCCESS ) {
 303                 send_ldap_result( conn, op, rc,
 304                         NULL, text, NULL, NULL );
 305                 goto return_results;
 306         }
 307
 308         /* check for referrals */
 309         rc = backend_check_referrals( be, conn, op, &pbase, &nbase );
 310         if ( rc != LDAP_SUCCESS ) {
 311                 goto return_results;
 312         }
 313
 314         /* deref the base if needed */
 315         suffix_alias( be, &nbase );
 316
 317 #if defined( LDAP_SLAPI )
 318         slapi_pblock_set( pb, SLAPI_BACKEND, (void *)be );
 319         slapi_pblock_set( pb, SLAPI_CONNECTION, (void *)conn );
 320         slapi_pblock_set( pb, SLAPI_OPERATION, (void *)op );
 321         slapi_pblock_set( pb, SLAPI_BIND_TARGET, (void *)base.bv_val );
 322         slapi_pblock_set( pb, SLAPI_SEARCH_SCOPE, (void *)scope );
 323         slapi_pblock_set( pb, SLAPI_SEARCH_DEREF, (void *)deref );
 324         slapi_pblock_set( pb, SLAPI_SEARCH_SIZELIMIT, (void *)sizelimit );
 325         slapi_pblock_set( pb, SLAPI_SEARCH_TIMELIMIT, (void *)timelimit );
 326         slapi_pblock_set( pb, SLAPI_SEARCH_FILTER, (void *)filter );
 327         slapi_pblock_set( pb, SLAPI_SEARCH_STRFILTER, (void *)fstr.bv_val );
 328         slapi_pblock_set( pb, SLAPI_SEARCH_ATTRSONLY, (void *)attrsonly );
 329         slapi_pblock_set( pb, SLAPI_REQCONTROLS, (void *)op->o_ctrls );
 330         slapi_pblock_set( pb, SLAPI_MANAGEDSAIT, (void *)(1) );
 331
 332         rc = doPluginFNs( be, SLAPI_PLUGIN_PRE_SEARCH_FN, pb );
 333         if ( rc != 0 && rc != LDAP_OTHER ) {
 334                 /*
 335                  * either there is no preOp (search) plugins
 336                  * or a plugin failed. Just log it
 337                  *
 338                  * FIXME: is this correct?
 339                  */
 340 #ifdef NEW_LOGGING
 341                 LDAP_LOG(( "operation", LDAP_LEVEL_INFO, "do_search: search preOps failed\n"));
 342 #else
 343                 Debug(LDAP_DEBUG_TRACE, "search preOps failed.\n", 0, 0, 0);
 344 #endif
 345     }
 346 #endif /* defined( LDAP_SLAPI ) */
 347
 348         /* actually do the search and send the result(s) */
 349         if ( be->be_search ) {
 350                 (*be->be_search)( be, conn, op, &pbase, &nbase,
 351                         scope, deref, sizelimit,
 352                         timelimit, filter, &fstr, an, attrsonly );
 353         } else {
 354                 send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
 355                         NULL, "operation not supported within namingContext",
 356                         NULL, NULL );
 357         }
 358
 359 #if defined( LDAP_SLAPI )
 360         rc = doPluginFNs( be, SLAPI_PLUGIN_POST_SEARCH_FN, pb );
 361         if ( rc != 0 && rc != LDAP_OTHER ) {
 362                 /*
 363                  * either there is no postOp (search) plugins
 364                  * or a plugin failed. Just log it
 365                  *
 366                  * FIXME: is this correct?
 367                  */
 368 #ifdef NEW_LOGGING
 369                 LDAP_LOG(( "operation", LDAP_LEVEL_INFO, "do_search: search postOps failed\n"));
 370 #else
 371                 Debug (LDAP_DEBUG_TRACE, " search postOps failed.\n", 0, 0, 0);
 372 #endif
 373     }
 374 #endif /* defined( LDAP_SLAPI ) */
 375
 376 return_results:;
 377 #ifdef LDAP_CLIENT_UPDATE
 378         if ( !( op->o_clientupdate_type & SLAP_LCUP_PERSIST ) )
 379 #endif /* LDAP_CLIENT_UPDATE */
 380         {
 381                 if( pbase.bv_val != NULL) free( pbase.bv_val );
 382                 if( nbase.bv_val != NULL) free( nbase.bv_val );
 383
 384                 if( fstr.bv_val != NULL) free( fstr.bv_val );
 385                 if( filter != NULL) filter_free( filter );
 386                 if( an != NULL ) free( an );
 387         }
 388
 389         return rc;
 390 }