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

   1 /* $OpenLDAP$ */
   2 /*
   3  * Copyright 1998-2000 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
  20 #include <stdio.h>
  21
  22 #include <ac/string.h>
  23 #include <ac/socket.h>
  24
  25 #include "ldap_pvt.h"
  26 #include "slap.h"
  27
  28 int
  29 do_search(
  30     Connection  *conn,  /* where to send results */
  31     Operation   *op     /* info about the op to which we're responding */
  32 ) {
  33         int             i;
  34         ber_int_t       scope, deref, attrsonly;
  35         ber_int_t       sizelimit, timelimit;
  36         struct berval base = { 0, NULL };
  37         struct berval pbase = { 0, NULL };
  38         struct berval nbase = { 0, NULL };
  39         struct berval   fstr = { 0, NULL };
  40         Filter          *filter = NULL;
  41         AttributeName   an, *al = NULL, *alast, *anew;
  42         Backend         *be;
  43         int                     rc;
  44         const char      *text;
  45         int                     manageDSAit;
  46
  47 #ifdef NEW_LOGGING
  48         LDAP_LOG(( "operation", LDAP_LEVEL_ENTRY,
  49                 "do_search: conn %d\n", conn->c_connid ));
  50 #else
  51         Debug( LDAP_DEBUG_TRACE, "do_search\n", 0, 0, 0 );
  52 #endif
  53
  54         /*
  55          * Parse the search request.  It looks like this:
  56          *
  57          *      SearchRequest := [APPLICATION 3] SEQUENCE {
  58          *              baseObject      DistinguishedName,
  59          *              scope           ENUMERATED {
  60          *                      baseObject      (0),
  61          *                      singleLevel     (1),
  62          *                      wholeSubtree    (2)
  63          *              },
  64          *              derefAliases    ENUMERATED {
  65          *                      neverDerefaliases       (0),
  66          *                      derefInSearching        (1),
  67          *                      derefFindingBaseObj     (2),
  68          *                      alwaysDerefAliases      (3)
  69          *              },
  70          *              sizelimit       INTEGER (0 .. 65535),
  71          *              timelimit       INTEGER (0 .. 65535),
  72          *              attrsOnly       BOOLEAN,
  73          *              filter          Filter,
  74          *              attributes      SEQUENCE OF AttributeType
  75          *      }
  76          */
  77
  78         /* baseObject, scope, derefAliases, sizelimit, timelimit, attrsOnly */
  79         if ( ber_scanf( op->o_ber, "{oiiiib" /*}*/,
  80                 &base, &scope, &deref, &sizelimit,
  81             &timelimit, &attrsonly ) == LBER_ERROR )
  82         {
  83                 send_ldap_disconnect( conn, op,
  84                         LDAP_PROTOCOL_ERROR, "decoding error" );
  85                 rc = SLAPD_DISCONNECT;
  86                 goto return_results;
  87         }
  88
  89         switch( scope ) {
  90         case LDAP_SCOPE_BASE:
  91         case LDAP_SCOPE_ONELEVEL:
  92         case LDAP_SCOPE_SUBTREE:
  93                 break;
  94         default:
  95                 send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR,
  96                         NULL, "invalid scope", NULL, NULL );
  97                 goto return_results;
  98         }
  99
 100         switch( deref ) {
 101         case LDAP_DEREF_NEVER:
 102         case LDAP_DEREF_FINDING:
 103         case LDAP_DEREF_SEARCHING:
 104         case LDAP_DEREF_ALWAYS:
 105                 break;
 106         default:
 107                 send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR,
 108                         NULL, "invalid deref", NULL, NULL );
 109                 goto return_results;
 110         }
 111
 112         rc = dnPrettyNormal( NULL, &base, &pbase, &nbase );
 113         if( rc != LDAP_SUCCESS ) {
 114 #ifdef NEW_LOGGING
 115                 LDAP_LOG(( "operation", LDAP_LEVEL_INFO,
 116                         "do_search: conn %d  invalid dn (%s)\n",
 117                         conn->c_connid, base.bv_val ));
 118 #else
 119                 Debug( LDAP_DEBUG_ANY,
 120                         "do_search: invalid dn (%s)\n", base.bv_val, 0, 0 );
 121 #endif
 122                 send_ldap_result( conn, op, rc = LDAP_INVALID_DN_SYNTAX, NULL,
 123                     "invalid DN", NULL, NULL );
 124                 goto return_results;
 125         }
 126
 127 #ifdef NEW_LOGGING
 128         LDAP_LOG(( "operation", LDAP_LEVEL_ARGS,
 129                 "do_search \"%s\" %d %d %d %d %d\n", base.bv_val, scope,
 130                 deref, sizelimit, timelimit, attrsonly ));
 131 #else
 132         Debug( LDAP_DEBUG_ARGS, "SRCH \"%s\" %d %d", base.bv_val, scope, deref );
 133         Debug( LDAP_DEBUG_ARGS, "    %d %d %d\n", sizelimit, timelimit,
 134             attrsonly);
 135 #endif
 136
 137         /* filter - returns a "normalized" version */
 138         rc = get_filter( conn, op->o_ber, &filter, &fstr, &text );
 139         if( rc != LDAP_SUCCESS ) {
 140                 if( rc == SLAPD_DISCONNECT ) {
 141                         send_ldap_disconnect( conn, op,
 142                                 LDAP_PROTOCOL_ERROR, text );
 143                 } else {
 144                         send_ldap_result( conn, op, rc,
 145                                 NULL, text, NULL, NULL );
 146                 }
 147                 goto return_results;
 148         }
 149
 150 #ifdef NEW_LOGGING
 151         LDAP_LOG(( "operation", LDAP_LEVEL_ARGS,
 152                 "do_search: conn %d     filter: %s\n", conn->c_connid, fstr.bv_val ));
 153 #else
 154         Debug( LDAP_DEBUG_ARGS, "    filter: %s\n", fstr.bv_val, 0, 0 );
 155 #endif
 156
 157
 158         /* attributes */
 159         if ( ber_scanf( op->o_ber, "{" /*}*/ ) == LBER_ERROR ) {
 160                 send_ldap_disconnect( conn, op,
 161                         LDAP_PROTOCOL_ERROR, "decoding attrs error" );
 162                 rc = SLAPD_DISCONNECT;
 163                 goto return_results;
 164         }
 165         while ( ber_scanf( op->o_ber, "o", &an.an_name ) != LBER_ERROR) {
 166                 anew = ch_malloc(sizeof(AttributeName));
 167                 anew->an_next = NULL;
 168                 anew->an_name = an.an_name;
 169                 anew->an_desc = NULL;
 170                 slap_bv2ad( &anew->an_name, &anew->an_desc, &text );
 171                 if (!al) {
 172                         al = anew;
 173                 } else {
 174                         alast->an_next = anew;
 175                 }
 176                 alast = anew;
 177         }
 178         if ( ber_scanf( op->o_ber, /*{{*/ "}}" ) == LBER_ERROR ) {
 179                 send_ldap_disconnect( conn, op,
 180                         LDAP_PROTOCOL_ERROR, "decoding attrs error" );
 181                 rc = SLAPD_DISCONNECT;
 182                 goto return_results;
 183         }
 184
 185         if( (rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) {
 186 #ifdef NEW_LOGGING
 187                 LDAP_LOG(( "operation", LDAP_LEVEL_INFO,
 188                         "do_search: conn %d  get_ctrls failed (%d)\n",
 189                         conn->c_connid, rc ));
 190 #else
 191                 Debug( LDAP_DEBUG_ANY, "do_search: get_ctrls failed\n", 0, 0, 0 );
 192 #endif
 193
 194                 goto return_results;
 195         }
 196
 197         rc = LDAP_SUCCESS;
 198
 199 #ifdef NEW_LOGGING
 200         LDAP_LOG(( "operation", LDAP_LEVEL_ARGS,
 201                 "do_search: conn %d     attrs:", conn->c_connid ));
 202 #else
 203         Debug( LDAP_DEBUG_ARGS, "    attrs:", 0, 0, 0 );
 204 #endif
 205
 206
 207         if ( al != NULL ) {
 208                 for ( anew = al; anew; anew=anew->an_next ) {
 209 #ifdef NEW_LOGGING
 210                         LDAP_LOG(( "operation", LDAP_LEVEL_ARGS,
 211                                 "do_search:        %s", anew->an_name.bv_val ));
 212 #else
 213                         Debug( LDAP_DEBUG_ARGS, " %s", anew->an_name.bv_val, 0, 0 );
 214 #endif
 215
 216                 }
 217         }
 218
 219 #ifdef NEW_LOGGING
 220         LDAP_LOG(( "operation", LDAP_LEVEL_ARGS, "\n" ));
 221 #else
 222         Debug( LDAP_DEBUG_ARGS, "\n", 0, 0, 0 );
 223 #endif
 224
 225         Statslog( LDAP_DEBUG_STATS,
 226             "conn=%ld op=%d SRCH base=\"%s\" scope=%d filter=\"%s\"\n",
 227             op->o_connid, op->o_opid, pbase.bv_val, scope, fstr.bv_val );
 228
 229         manageDSAit = get_manageDSAit( op );
 230
 231         if ( scope == LDAP_SCOPE_BASE ) {
 232                 Entry *entry = NULL;
 233
 234                 if ( strcasecmp( nbase.bv_val, LDAP_ROOT_DSE ) == 0 ) {
 235 #ifdef LDAP_CONNECTIONLESS
 236                         /* Ignore LDAPv2 CLDAP DSE queries */
 237                         if (op->o_protocol==LDAP_VERSION2 && conn->c_is_udp) {
 238                                 goto return_results;
 239                         }
 240 #endif
 241                         /* check restrictions */
 242                         rc = backend_check_restrictions( NULL, conn, op, NULL, &text ) ;
 243                         if( rc != LDAP_SUCCESS ) {
 244                                 send_ldap_result( conn, op, rc,
 245                                         NULL, text, NULL, NULL );
 246                                 goto return_results;
 247                         }
 248
 249                         rc = root_dse_info( conn, &entry, &text );
 250                 }
 251
 252 #if defined( SLAPD_SCHEMA_DN )
 253                 else if ( strcasecmp( nbase.bv_val, SLAPD_SCHEMA_DN ) == 0 ) {
 254                         /* check restrictions */
 255                         rc = backend_check_restrictions( NULL, conn, op, NULL, &text ) ;
 256                         if( rc != LDAP_SUCCESS ) {
 257                                 send_ldap_result( conn, op, rc,
 258                                         NULL, text, NULL, NULL );
 259                                 goto return_results;
 260                         }
 261
 262                         rc = schema_info( &entry, &text );
 263                 }
 264 #endif
 265
 266                 if( rc != LDAP_SUCCESS ) {
 267                         send_ldap_result( conn, op, rc,
 268                                 NULL, text, NULL, NULL );
 269                         goto return_results;
 270
 271                 } else if ( entry != NULL ) {
 272                         rc = test_filter( NULL, conn, op,
 273                                 entry, filter );
 274
 275                         if( rc == LDAP_COMPARE_TRUE ) {
 276                                 send_search_entry( NULL, conn, op,
 277                                         entry, al, attrsonly, NULL );
 278                         }
 279                         entry_free( entry );
 280
 281                         send_ldap_result( conn, op, LDAP_SUCCESS,
 282                                 NULL, NULL, NULL, NULL );
 283
 284                         goto return_results;
 285                 }
 286         }
 287
 288         if( !nbase.bv_len && default_search_nbase.bv_len ) {
 289                 ch_free( pbase.bv_val );
 290                 ch_free( nbase.bv_val );
 291
 292                 ber_dupbv( &pbase, &default_search_base );
 293                 ber_dupbv( &nbase, &default_search_nbase );
 294         }
 295
 296         /*
 297          * We could be serving multiple database backends.  Select the
 298          * appropriate one, or send a referral to our "referral server"
 299          * if we don't hold it.
 300          */
 301         if ( (be = select_backend( &nbase, manageDSAit, 1 )) == NULL ) {
 302                 struct berval **ref = referral_rewrite( default_referral,
 303                         NULL, &pbase, scope );
 304
 305                 send_ldap_result( conn, op, rc = LDAP_REFERRAL,
 306                         NULL, NULL, ref ? ref : default_referral, NULL );
 307
 308                 ber_bvecfree( ref );
 309                 goto return_results;
 310         }
 311
 312         /* check restrictions */
 313         rc = backend_check_restrictions( be, conn, op, NULL, &text ) ;
 314         if( rc != LDAP_SUCCESS ) {
 315                 send_ldap_result( conn, op, rc,
 316                         NULL, text, NULL, NULL );
 317                 goto return_results;
 318         }
 319
 320         /* check for referrals */
 321         rc = backend_check_referrals( be, conn, op, &pbase, &nbase );
 322         if ( rc != LDAP_SUCCESS ) {
 323                 goto return_results;
 324         }
 325
 326         /* deref the base if needed */
 327         suffix_alias( be, &nbase );
 328
 329         /* actually do the search and send the result(s) */
 330         if ( be->be_search ) {
 331                 (*be->be_search)( be, conn, op, &pbase, &nbase,
 332                         scope, deref, sizelimit,
 333                     timelimit, filter, fstr.bv_val, al, attrsonly );
 334         } else {
 335                 send_ldap_result( conn, op, rc = LDAP_UNWILLING_TO_PERFORM,
 336                         NULL, "operation not supported within namingContext", NULL, NULL );
 337         }
 338
 339 return_results:;
 340         free( base.bv_val );
 341         if( pbase.bv_val != NULL) free( pbase.bv_val );
 342         if( nbase.bv_val != NULL) free( nbase.bv_val );
 343
 344         if( fstr.bv_val != NULL) free( fstr.bv_val );
 345         if( filter != NULL) filter_free( filter );
 346         for (; al; al=anew ) {
 347                 anew = al->an_next;
 348                 free(al->an_name.bv_val);
 349                 free(al);
 350         }
 351
 352         return rc;
 353 }