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