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openldap  2.4.31
Functions
search.c File Reference
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include <ac/socket.h>
#include "lutil.h"
#include "slap.h"

Go to the source code of this file.

Functions

int do_search (Operation *op, SlapReply *rs)
int fe_op_search (Operation *op, SlapReply *rs)

Function Documentation

int do_search ( Operation op,
SlapReply rs 
)

Definition at line 37 of file search.c.

{
       struct berval base = BER_BVNULL;
       ber_len_t     siz, off, i;

       Debug( LDAP_DEBUG_TRACE, "%s do_search\n",
              op->o_log_prefix, 0, 0 );
       /*
        * Parse the search request.  It looks like this:
        *
        *     SearchRequest := [APPLICATION 3] SEQUENCE {
        *            baseObject    DistinguishedName,
        *            scope         ENUMERATED {
        *                   baseObject    (0),
        *                   singleLevel   (1),
        *                   wholeSubtree (2),
        *          subordinate (3)  -- OpenLDAP extension
        *            },
        *            derefAliases  ENUMERATED {
        *                   neverDerefaliases    (0),
        *                   derefInSearching     (1),
        *                   derefFindingBaseObj  (2),
        *                   alwaysDerefAliases   (3)
        *            },
        *            sizelimit     INTEGER (0 .. 65535),
        *            timelimit     INTEGER (0 .. 65535),
        *            attrsOnly     BOOLEAN,
        *            filter        Filter,
        *            attributes    SEQUENCE OF AttributeType
        *     }
        */

       /* baseObject, scope, derefAliases, sizelimit, timelimit, attrsOnly */
       if ( ber_scanf( op->o_ber, "{miiiib" /*}*/,
              &base, &op->ors_scope, &op->ors_deref, &op->ors_slimit,
           &op->ors_tlimit, &op->ors_attrsonly ) == LBER_ERROR )
       {
              send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
              rs->sr_err = SLAPD_DISCONNECT;
              goto return_results;
       }

       if ( op->ors_tlimit < 0 || op->ors_tlimit > SLAP_MAX_LIMIT ) {
              send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, "invalid time limit" );
              goto return_results;
       }

       if ( op->ors_slimit < 0 || op->ors_slimit > SLAP_MAX_LIMIT ) {
              send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, "invalid size limit" );
              goto return_results;
       }

       switch( op->ors_scope ) {
       case LDAP_SCOPE_BASE:
       case LDAP_SCOPE_ONELEVEL:
       case LDAP_SCOPE_SUBTREE:
       case LDAP_SCOPE_SUBORDINATE:
              break;
       default:
              send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, "invalid scope" );
              goto return_results;
       }

       switch( op->ors_deref ) {
       case LDAP_DEREF_NEVER:
       case LDAP_DEREF_FINDING:
       case LDAP_DEREF_SEARCHING:
       case LDAP_DEREF_ALWAYS:
              break;
       default:
              send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, "invalid deref" );
              goto return_results;
       }

       rs->sr_err = dnPrettyNormal( NULL, &base, &op->o_req_dn, &op->o_req_ndn, op->o_tmpmemctx );
       if( rs->sr_err != LDAP_SUCCESS ) {
              Debug( LDAP_DEBUG_ANY, "%s do_search: invalid dn: \"%s\"\n",
                     op->o_log_prefix, base.bv_val, 0 );
              send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );
              goto return_results;
       }

       Debug( LDAP_DEBUG_ARGS, "SRCH \"%s\" %d %d",
              base.bv_val, op->ors_scope, op->ors_deref );
       Debug( LDAP_DEBUG_ARGS, "    %d %d %d\n",
              op->ors_slimit, op->ors_tlimit, op->ors_attrsonly);

       /* filter - returns a "normalized" version */
       rs->sr_err = get_filter( op, op->o_ber, &op->ors_filter, &rs->sr_text );
       if( rs->sr_err != LDAP_SUCCESS ) {
              if( rs->sr_err == SLAPD_DISCONNECT ) {
                     rs->sr_err = LDAP_PROTOCOL_ERROR;
                     send_ldap_disconnect( op, rs );
                     rs->sr_err = SLAPD_DISCONNECT;
              } else {
                     send_ldap_result( op, rs );
              }
              goto return_results;
       }
       filter2bv_x( op, op->ors_filter, &op->ors_filterstr );
       
       Debug( LDAP_DEBUG_ARGS, "    filter: %s\n",
              !BER_BVISEMPTY( &op->ors_filterstr ) ? op->ors_filterstr.bv_val : "empty", 0, 0 );

       /* attributes */
       siz = sizeof(AttributeName);
       off = offsetof(AttributeName,an_name);
       if ( ber_scanf( op->o_ber, "{M}}", &op->ors_attrs, &siz, off ) == LBER_ERROR ) {
              send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding attrs error" );
              rs->sr_err = SLAPD_DISCONNECT;
              goto return_results;
       }
       for ( i=0; i<siz; i++ ) {
              const char *dummy;   /* ignore msgs from bv2ad */
              op->ors_attrs[i].an_desc = NULL;
              op->ors_attrs[i].an_oc = NULL;
              op->ors_attrs[i].an_flags = 0;
              if ( slap_bv2ad( &op->ors_attrs[i].an_name,
                     &op->ors_attrs[i].an_desc, &dummy ) != LDAP_SUCCESS )
              {
                     if ( slap_bv2undef_ad( &op->ors_attrs[i].an_name,
                            &op->ors_attrs[i].an_desc, &dummy,
                            SLAP_AD_PROXIED|SLAP_AD_NOINSERT ) )
                     {
                            struct berval *bv = &op->ors_attrs[i].an_name;

                            /* RFC 4511 LDAPv3: All User Attributes */
                            if ( bvmatch( bv, slap_bv_all_user_attrs ) ) {
                                   continue;
                            }

                            /* RFC 3673 LDAPv3: All Operational Attributes */
                            if ( bvmatch( bv, slap_bv_all_operational_attrs ) ) {
                                   continue;
                            }

                            /* RFC 4529 LDAP: Requesting Attributes by Object Class */
                            if ( bv->bv_len > 1 && bv->bv_val[0] == '@' ) {
                                   /* FIXME: check if remaining is valid oc name? */
                                   continue;
                            }

                            /* add more "exceptions" to RFC 4511 4.5.1.8. */

                            /* invalid attribute description? remove */
                            if ( ad_keystring( bv ) ) {
                                   /* NOTE: parsed in-place, don't modify;
                                    * rather add "1.1", which must be ignored */
                                   BER_BVSTR( &op->ors_attrs[i].an_name, LDAP_NO_ATTRS );
                            }

                            /* otherwise leave in place... */
                     }
              }
       }

       if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
              Debug( LDAP_DEBUG_ANY, "%s do_search: get_ctrls failed\n",
                     op->o_log_prefix, 0, 0 );
              goto return_results;
       }

       Debug( LDAP_DEBUG_ARGS, "    attrs:", 0, 0, 0 );

       if ( siz != 0 ) {
              for ( i = 0; i<siz; i++ ) {
                     Debug( LDAP_DEBUG_ARGS, " %s", op->ors_attrs[i].an_name.bv_val, 0, 0 );
              }
       }

       Debug( LDAP_DEBUG_ARGS, "\n", 0, 0, 0 );

       if ( StatslogTest( LDAP_DEBUG_STATS ) ) {
              char abuf[BUFSIZ/2], *ptr = abuf;
              unsigned len = 0, alen;

              sprintf(abuf, "scope=%d deref=%d", op->ors_scope, op->ors_deref);
              Statslog( LDAP_DEBUG_STATS,
                      "%s SRCH base=\"%s\" %s filter=\"%s\"\n",
                      op->o_log_prefix, op->o_req_dn.bv_val, abuf,
                      op->ors_filterstr.bv_val, 0 );

              for ( i = 0; i<siz; i++ ) {
                     alen = op->ors_attrs[i].an_name.bv_len;
                     if (alen >= sizeof(abuf)) {
                            alen = sizeof(abuf)-1;
                     }
                     if (len && (len + 1 + alen >= sizeof(abuf))) {
                            Statslog( LDAP_DEBUG_STATS, "%s SRCH attr=%s\n",
                                op->o_log_prefix, abuf, 0, 0, 0 );
                            len = 0;
                            ptr = abuf;
                     }
                     if (len) {
                            *ptr++ = ' ';
                            len++;
                     }
                     ptr = lutil_strncopy(ptr, op->ors_attrs[i].an_name.bv_val, alen);
                     len += alen;
                     *ptr = '\0';
              }
              if (len) {
                     Statslog( LDAP_DEBUG_STATS, "%s SRCH attr=%s\n",
                            op->o_log_prefix, abuf, 0, 0, 0 );
              }
       }

       op->o_bd = frontendDB;
       rs->sr_err = frontendDB->be_search( op, rs );

return_results:;
       if ( !BER_BVISNULL( &op->o_req_dn ) ) {
              slap_sl_free( op->o_req_dn.bv_val, op->o_tmpmemctx );
       }
       if ( !BER_BVISNULL( &op->o_req_ndn ) ) {
              slap_sl_free( op->o_req_ndn.bv_val, op->o_tmpmemctx );
       }
       if ( !BER_BVISNULL( &op->ors_filterstr ) ) {
              op->o_tmpfree( op->ors_filterstr.bv_val, op->o_tmpmemctx );
       }
       if ( op->ors_filter != NULL) {
              filter_free_x( op, op->ors_filter, 1 );
       }
       if ( op->ors_attrs != NULL ) {
              op->o_tmpfree( op->ors_attrs, op->o_tmpmemctx );
       }

       return rs->sr_err;
}

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int fe_op_search ( Operation op,
SlapReply rs 
)

Definition at line 270 of file search.c.

{
       BackendDB            *bd = op->o_bd;

       if ( op->ors_scope == LDAP_SCOPE_BASE ) {
              Entry *entry = NULL;

              if ( BER_BVISEMPTY( &op->o_req_ndn ) ) {
#ifdef LDAP_CONNECTIONLESS
                     /* Ignore LDAPv2 CLDAP Root DSE queries */
                     if (op->o_protocol == LDAP_VERSION2 && op->o_conn->c_is_udp) {
                            goto return_results;
                     }
#endif
                     /* check restrictions */
                     if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
                            send_ldap_result( op, rs );
                            goto return_results;
                     }

                     rs->sr_err = root_dse_info( op->o_conn, &entry, &rs->sr_text );

              } else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) {
                     /* check restrictions */
                     if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
                            send_ldap_result( op, rs );
                            goto return_results;
                     }

                     rs->sr_err = schema_info( &entry, &rs->sr_text );
              }

              if( rs->sr_err != LDAP_SUCCESS ) {
                     send_ldap_result( op, rs );
                     goto return_results;

              } else if ( entry != NULL ) {
                     if ( get_assert( op ) &&
                            ( test_filter( op, entry, get_assertion( op )) != LDAP_COMPARE_TRUE )) {
                            rs->sr_err = LDAP_ASSERTION_FAILED;
                            goto fail1;
                     }

                     rs->sr_err = test_filter( op, entry, op->ors_filter );

                     if( rs->sr_err == LDAP_COMPARE_TRUE ) {
                            /* note: we set no limits because either
                             * no limit is specified, or at least 1
                             * is specified, and we're going to return
                             * at most one entry */                   
                            op->ors_slimit = SLAP_NO_LIMIT;
                            op->ors_tlimit = SLAP_NO_LIMIT;

                            rs->sr_entry = entry;
                            rs->sr_attrs = op->ors_attrs;
                            rs->sr_operational_attrs = NULL;
                            rs->sr_flags = 0;
                            send_search_entry( op, rs );
                            rs->sr_entry = NULL;
                            rs->sr_operational_attrs = NULL;
                     }
                     rs->sr_err = LDAP_SUCCESS;
fail1:
                     entry_free( entry );
                     send_ldap_result( op, rs );
                     goto return_results;
              }
       }

       if( BER_BVISEMPTY( &op->o_req_ndn ) && !BER_BVISEMPTY( &default_search_nbase ) ) {
              slap_sl_free( op->o_req_dn.bv_val, op->o_tmpmemctx );
              slap_sl_free( op->o_req_ndn.bv_val, op->o_tmpmemctx );

              ber_dupbv_x( &op->o_req_dn, &default_search_base, op->o_tmpmemctx );
              ber_dupbv_x( &op->o_req_ndn, &default_search_nbase, op->o_tmpmemctx );
       }

       /*
        * We could be serving multiple database backends.  Select the
        * appropriate one, or send a referral to our "referral server"
        * if we don't hold it.
        */

       op->o_bd = select_backend( &op->o_req_ndn, 1 );
       if ( op->o_bd == NULL ) {
              rs->sr_ref = referral_rewrite( default_referral,
                     NULL, &op->o_req_dn, op->ors_scope );

              if (!rs->sr_ref) rs->sr_ref = default_referral;
              rs->sr_err = LDAP_REFERRAL;
              op->o_bd = bd;
              send_ldap_result( op, rs );

              if (rs->sr_ref != default_referral)
              ber_bvarray_free( rs->sr_ref );
              rs->sr_ref = NULL;
              goto return_results;
       }

       /* check restrictions */
       if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {
              send_ldap_result( op, rs );
              goto return_results;
       }

       /* check for referrals */
       if( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
              goto return_results;
       }

       if ( SLAP_SHADOW(op->o_bd) && get_dontUseCopy(op) ) {
              /* don't use shadow copy */
              BerVarray defref = op->o_bd->be_update_refs
                     ? op->o_bd->be_update_refs : default_referral;

              if( defref != NULL ) {
                     rs->sr_ref = referral_rewrite( defref,
                            NULL, &op->o_req_dn, op->ors_scope );
                     if( !rs->sr_ref) rs->sr_ref = defref;
                     rs->sr_err = LDAP_REFERRAL;
                     send_ldap_result( op, rs );

                     if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref );

              } else {
                     send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
                            "copy not used; no referral information available" );
              }

       } else if ( op->o_bd->be_search ) {
              if ( limits_check( op, rs ) == 0 ) {
                     /* actually do the search and send the result(s) */
                     (op->o_bd->be_search)( op, rs );
              }
              /* else limits_check() sends error */

       } else {
              send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,
                     "operation not supported within namingContext" );
       }

return_results:;
       op->o_bd = bd;
       return rs->sr_err;
}

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