/* backend.c - routines for dealing with back-end databases */ /* $OpenLDAP$ */ /* This work is part of OpenLDAP Software . * * Copyright 1998-2004 The OpenLDAP Foundation. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted only as authorized by the OpenLDAP * Public License. * * A copy of this license is available in the file LICENSE in the * top-level directory of the distribution or, alternatively, at * . */ /* Portions Copyright (c) 1995 Regents of the University of Michigan. * All rights reserved. * * Redistribution and use in source and binary forms are permitted * provided that this notice is preserved and that due credit is given * to the University of Michigan at Ann Arbor. The name of the University * may not be used to endorse or promote products derived from this * software without specific prior written permission. This software * is provided ``as is'' without express or implied warranty. */ #include "portable.h" #include #include #include #include #include "slap.h" #include "lutil.h" #include "lber_pvt.h" #include "ldap_rq.h" #ifdef LDAP_SLAPI #include "slapi/slapi.h" static void init_group_pblock( Operation *op, Entry *target, Entry *e, struct berval *op_ndn, AttributeDescription *group_at ); static int call_group_preop_plugins( Operation *op ); static void call_group_postop_plugins( Operation *op ); #endif /* LDAP_SLAPI */ /* * If a module is configured as dynamic, its header should not * get included into slapd. While this is a general rule and does * not have much of an effect in UNIX, this rule should be adhered * to for Windows, where dynamic object code should not be implicitly * imported into slapd without appropriate __declspec(dllimport) directives. */ #if SLAPD_BDB == SLAPD_MOD_STATIC #include "back-bdb/external.h" #endif #if SLAPD_DNSSRV == SLAPD_MOD_STATIC #include "back-dnssrv/external.h" #endif #if SLAPD_HDB == SLAPD_MOD_STATIC #include "back-hdb/external.h" #endif #if SLAPD_LDAP == SLAPD_MOD_STATIC #include "back-ldap/external.h" #endif #if SLAPD_LDBM == SLAPD_MOD_STATIC #include "back-ldbm/external.h" #endif #if SLAPD_META == SLAPD_MOD_STATIC #include "back-meta/external.h" #endif #if SLAPD_MONITOR == SLAPD_MOD_STATIC #include "back-monitor/external.h" #endif #if SLAPD_NULL == SLAPD_MOD_STATIC #include "back-null/external.h" #endif #if SLAPD_PASSWD == SLAPD_MOD_STATIC #include "back-passwd/external.h" #endif #if SLAPD_PERL == SLAPD_MOD_STATIC #include "back-perl/external.h" #endif #if SLAPD_RELAY == SLAPD_MOD_STATIC #include "back-relay/external.h" #endif #if SLAPD_SHELL == SLAPD_MOD_STATIC #include "back-shell/external.h" #endif #if SLAPD_TCL == SLAPD_MOD_STATIC #include "back-tcl/external.h" #endif #if SLAPD_SQL == SLAPD_MOD_STATIC #include "back-sql/external.h" #endif #if SLAPD_PRIVATE == SLAPD_MOD_STATIC #include "private/external.h" #endif static BackendInfo binfo[] = { #if SLAPD_BDB == SLAPD_MOD_STATIC {"bdb", bdb_initialize}, #endif #if SLAPD_DNSSRV == SLAPD_MOD_STATIC {"dnssrv", dnssrv_back_initialize}, #endif #if SLAPD_HDB == SLAPD_MOD_STATIC {"hdb", hdb_initialize}, #endif #if SLAPD_LDAP == SLAPD_MOD_STATIC {"ldap", ldap_back_initialize}, #endif #if SLAPD_LDBM == SLAPD_MOD_STATIC {"ldbm", ldbm_back_initialize}, #endif #if SLAPD_META == SLAPD_MOD_STATIC {"meta", meta_back_initialize}, #endif #if SLAPD_MONITOR == SLAPD_MOD_STATIC {"monitor", monitor_back_initialize}, #endif #if SLAPD_NULL == SLAPD_MOD_STATIC {"null", null_back_initialize}, #endif #if SLAPD_PASSWD == SLAPD_MOD_STATIC {"passwd", passwd_back_initialize}, #endif #if SLAPD_PERL == SLAPD_MOD_STATIC {"perl", perl_back_initialize}, #endif #if SLAPD_RELAY == SLAPD_MOD_STATIC {"relay", relay_back_initialize}, #endif #if SLAPD_SHELL == SLAPD_MOD_STATIC {"shell", shell_back_initialize}, #endif #if SLAPD_TCL == SLAPD_MOD_STATIC {"tcl", tcl_back_initialize}, #endif #if SLAPD_SQL == SLAPD_MOD_STATIC {"sql", backsql_initialize}, #endif /* for any private backend */ #if SLAPD_PRIVATE == SLAPD_MOD_STATIC {"private", private_back_initialize}, #endif {NULL} }; int nBackendInfo = 0; BackendInfo *backendInfo = NULL; int nBackendDB = 0; BackendDB *backendDB = NULL; ldap_pvt_thread_pool_t syncrepl_pool; int syncrepl_pool_max = SLAP_MAX_SYNCREPL_THREADS; int backend_init(void) { int rc = -1; ldap_pvt_thread_pool_init( &syncrepl_pool, syncrepl_pool_max, 0 ); if((nBackendInfo != 0) || (backendInfo != NULL)) { /* already initialized */ Debug( LDAP_DEBUG_ANY, "backend_init: already initialized.\n", 0, 0, 0 ); return -1; } for( ; binfo[nBackendInfo].bi_type != NULL; nBackendInfo++ ) { assert( binfo[nBackendInfo].bi_init ); rc = binfo[nBackendInfo].bi_init( &binfo[nBackendInfo] ); if(rc != 0) { Debug( LDAP_DEBUG_ANY, "backend_init: initialized for type \"%s\"\n", binfo[nBackendInfo].bi_type, 0, 0 ); /* destroy those we've already inited */ for( nBackendInfo--; nBackendInfo >= 0 ; nBackendInfo-- ) { if ( binfo[nBackendInfo].bi_destroy ) { binfo[nBackendInfo].bi_destroy( &binfo[nBackendInfo] ); } } return rc; } } if ( nBackendInfo > 0) { backendInfo = binfo; return 0; } #ifdef SLAPD_MODULES return 0; #else Debug( LDAP_DEBUG_ANY, "backend_init: failed\n", 0, 0, 0 ); return rc; #endif /* SLAPD_MODULES */ } int backend_add(BackendInfo *aBackendInfo) { int rc = 0; if ( aBackendInfo->bi_init == NULL ) { Debug( LDAP_DEBUG_ANY, "backend_add: " "backend type \"%s\" does not have the (mandatory)init function\n", aBackendInfo->bi_type, 0, 0 ); return -1; } if ((rc = aBackendInfo->bi_init(aBackendInfo)) != 0) { Debug( LDAP_DEBUG_ANY, "backend_add: initialization for type \"%s\" failed\n", aBackendInfo->bi_type, 0, 0 ); return rc; } /* now add the backend type to the Backend Info List */ { BackendInfo *newBackendInfo = 0; /* if backendInfo == binfo no deallocation of old backendInfo */ if (backendInfo == binfo) { newBackendInfo = ch_calloc(nBackendInfo + 1, sizeof(BackendInfo)); AC_MEMCPY(newBackendInfo, backendInfo, sizeof(BackendInfo) * nBackendInfo); } else { newBackendInfo = ch_realloc(backendInfo, sizeof(BackendInfo) * (nBackendInfo + 1)); } AC_MEMCPY(&newBackendInfo[nBackendInfo], aBackendInfo, sizeof(BackendInfo)); backendInfo = newBackendInfo; nBackendInfo++; return 0; } } /* startup a specific backend database */ int backend_startup_one(Backend *be) { int rc = 0; assert(be); be->be_pending_csn_list = (struct be_pcl *) ch_calloc( 1, sizeof( struct be_pcl )); build_new_dn( &be->be_context_csn, be->be_nsuffix, (struct berval *)&slap_ldapsync_cn_bv, NULL ); LDAP_TAILQ_INIT( be->be_pending_csn_list ); Debug( LDAP_DEBUG_TRACE, "backend_startup: starting \"%s\"\n", be->be_suffix ? be->be_suffix[0].bv_val : "(unknown)", 0, 0 ); if ( be->bd_info->bi_db_open ) { rc = be->bd_info->bi_db_open( be ); if ( rc != 0 ) { Debug( LDAP_DEBUG_ANY, "backend_startup: bi_db_open failed! (%d)\n", rc, 0, 0 ); } } return rc; } int backend_startup(Backend *be) { int i; int rc = 0; if( ! ( nBackendDB > 0 ) ) { /* no databases */ Debug( LDAP_DEBUG_ANY, "backend_startup: %d databases to startup.\n", nBackendDB, 0, 0 ); return 1; } if(be != NULL) { if ( be->bd_info->bi_open ) { rc = be->bd_info->bi_open( be->bd_info ); if ( rc != 0 ) { Debug( LDAP_DEBUG_ANY, "backend_startup: bi_open failed!\n", 0, 0, 0 ); return rc; } } return backend_startup_one( be ); } /* open frontend, if required */ if ( frontendDB->bd_info->bi_db_open ) { rc = frontendDB->bd_info->bi_db_open( frontendDB ); if ( rc != 0 ) { Debug( LDAP_DEBUG_ANY, "backend_startup: bi_db_open(frontend) failed! (%d)\n", rc, 0, 0 ); return rc; } } /* open each backend type */ for( i = 0; i < nBackendInfo; i++ ) { if( backendInfo[i].bi_nDB == 0) { /* no database of this type, don't open */ continue; } if( backendInfo[i].bi_open ) { rc = backendInfo[i].bi_open( &backendInfo[i] ); if ( rc != 0 ) { Debug( LDAP_DEBUG_ANY, "backend_startup: bi_open %d failed!\n", i, 0, 0 ); return rc; } } } ldap_pvt_thread_mutex_init( &syncrepl_rq.rq_mutex ); LDAP_STAILQ_INIT( &syncrepl_rq.task_list ); LDAP_STAILQ_INIT( &syncrepl_rq.run_list ); /* open each backend database */ for( i = 0; i < nBackendDB; i++ ) { if ( backendDB[i].be_suffix == NULL ) { Debug( LDAP_DEBUG_ANY, "backend_startup: warning, database %d (%s) " "has no suffix\n", i, backendDB[i].bd_info->bi_type, 0 ); } /* append global access controls */ acl_append( &backendDB[i].be_acl, frontendDB->be_acl ); rc = backend_startup_one( &backendDB[i] ); if ( rc ) return rc; if ( !LDAP_STAILQ_EMPTY( &backendDB[i].be_syncinfo )) { syncinfo_t *si; if ( !( backendDB[i].be_search && backendDB[i].be_add && backendDB[i].be_modify && backendDB[i].be_delete )) { Debug( LDAP_DEBUG_ANY, "backend_startup: database(%d) does not support " "operations required for syncrepl", i, 0, 0 ); continue; } LDAP_STAILQ_FOREACH( si, &backendDB[i].be_syncinfo, si_next ) { si->si_be = &backendDB[i]; init_syncrepl( si ); ldap_pvt_thread_mutex_lock( &syncrepl_rq.rq_mutex ); ldap_pvt_runqueue_insert( &syncrepl_rq, si->si_interval, do_syncrepl, (void *) si ); ldap_pvt_thread_mutex_unlock( &syncrepl_rq.rq_mutex ); } } } return rc; } int backend_num( Backend *be ) { int i; if( be == NULL ) return -1; for( i = 0; i < nBackendDB; i++ ) { if( be == &backendDB[i] ) return i; } return -1; } int backend_shutdown( Backend *be ) { int i; int rc = 0; if( be != NULL ) { /* shutdown a specific backend database */ if ( be->bd_info->bi_nDB == 0 ) { /* no database of this type, we never opened it */ return 0; } if ( be->bd_info->bi_db_close ) { be->bd_info->bi_db_close( be ); } if( be->bd_info->bi_close ) { be->bd_info->bi_close( be->bd_info ); } return 0; } /* close each backend database */ for( i = 0; i < nBackendDB; i++ ) { if ( backendDB[i].bd_info->bi_db_close ) { backendDB[i].bd_info->bi_db_close( &backendDB[i] ); } if(rc != 0) { Debug( LDAP_DEBUG_ANY, "backend_close: bi_db_close %s failed!\n", backendDB[i].be_type, 0, 0 ); } } /* close each backend type */ for( i = 0; i < nBackendInfo; i++ ) { if( backendInfo[i].bi_nDB == 0 ) { /* no database of this type */ continue; } if( backendInfo[i].bi_close ) { backendInfo[i].bi_close( &backendInfo[i] ); } } /* close frontend, if required */ if ( frontendDB->bd_info->bi_db_close ) { rc = frontendDB->bd_info->bi_db_close ( frontendDB ); if ( rc != 0 ) { Debug( LDAP_DEBUG_ANY, "backend_startup: bi_db_close(frontend) failed! (%d)\n", rc, 0, 0 ); } } return 0; } int backend_destroy(void) { int i; BackendDB *bd; syncinfo_t *si_entry; ldap_pvt_thread_pool_destroy( &syncrepl_pool, 1 ); /* destroy each backend database */ for( i = 0, bd = backendDB; i < nBackendDB; i++, bd++ ) { while ( !LDAP_STAILQ_EMPTY( &bd->be_syncinfo )) { si_entry = LDAP_STAILQ_FIRST( &bd->be_syncinfo ); LDAP_STAILQ_REMOVE_HEAD( &bd->be_syncinfo, si_next ); syncinfo_free( si_entry ); } if ( bd->bd_info->bi_db_destroy ) { bd->bd_info->bi_db_destroy( bd ); } ber_bvarray_free( bd->be_suffix ); ber_bvarray_free( bd->be_nsuffix ); if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val ); if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val ); if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val ); if ( bd->be_context_csn.bv_val ) free( bd->be_context_csn.bv_val ); acl_destroy( bd->be_acl, frontendDB->be_acl ); } free( backendDB ); /* destroy each backend type */ for( i = 0; i < nBackendInfo; i++ ) { if( backendInfo[i].bi_destroy ) { backendInfo[i].bi_destroy( &backendInfo[i] ); } } #ifdef SLAPD_MODULES if (backendInfo != binfo) { free(backendInfo); } #endif /* SLAPD_MODULES */ nBackendInfo = 0; backendInfo = NULL; /* destroy frontend database */ bd = frontendDB; if ( bd->bd_info->bi_db_destroy ) { bd->bd_info->bi_db_destroy( bd ); } ber_bvarray_free( bd->be_suffix ); ber_bvarray_free( bd->be_nsuffix ); if ( bd->be_rootdn.bv_val ) free( bd->be_rootdn.bv_val ); if ( bd->be_rootndn.bv_val ) free( bd->be_rootndn.bv_val ); if ( bd->be_rootpw.bv_val ) free( bd->be_rootpw.bv_val ); acl_destroy( bd->be_acl, frontendDB->be_acl ); return 0; } BackendInfo* backend_info(const char *type) { int i; /* search for the backend type */ for( i = 0; i < nBackendInfo; i++ ) { if( strcasecmp(backendInfo[i].bi_type, type) == 0 ) { return &backendInfo[i]; } } return NULL; } BackendDB * backend_db_init( const char *type ) { Backend *be; BackendInfo *bi = backend_info(type); int rc = 0; if( bi == NULL ) { fprintf( stderr, "Unrecognized database type (%s)\n", type ); return NULL; } be = backendDB; backendDB = (BackendDB *) ch_realloc( (char *) backendDB, (nBackendDB + 1) * sizeof(Backend) ); memset( &backendDB[nbackends], '\0', sizeof(Backend) ); /* did realloc move our table? if so, fix up dependent pointers */ if ( be != backendDB ) { int i; for ( i=0, be=backendDB; ibe_pcl_mutexp = &be->be_pcl_mutex; } } be = &backends[nbackends++]; be->bd_info = bi; be->be_def_limit = frontendDB->be_def_limit; be->be_dfltaccess = frontendDB->be_dfltaccess; be->be_restrictops = frontendDB->be_restrictops; be->be_requires = frontendDB->be_requires; be->be_ssf_set = frontendDB->be_ssf_set; be->be_context_csn.bv_len = 0; be->be_context_csn.bv_val = NULL; be->be_pcl_mutexp = &be->be_pcl_mutex; ldap_pvt_thread_mutex_init( be->be_pcl_mutexp ); LDAP_STAILQ_INIT( &be->be_syncinfo ); /* assign a default depth limit for alias deref */ be->be_max_deref_depth = SLAPD_DEFAULT_MAXDEREFDEPTH; if(bi->bi_db_init) { rc = bi->bi_db_init( be ); } if(rc != 0) { fprintf( stderr, "database init failed (%s)\n", type ); nbackends--; return NULL; } bi->bi_nDB++; return( be ); } void be_db_close( void ) { int i; for ( i = 0; i < nbackends; i++ ) { if ( backends[i].bd_info->bi_db_close ) { (*backends[i].bd_info->bi_db_close)( &backends[i] ); } } if ( frontendDB->bd_info->bi_db_close ) { (*frontendDB->bd_info->bi_db_close)( frontendDB ); } } Backend * select_backend( struct berval * dn, int manageDSAit, int noSubs ) { int i, j; ber_len_t len, dnlen = dn->bv_len; Backend *be = NULL; for ( i = 0; i < nbackends; i++ ) { for ( j = 0; backends[i].be_nsuffix != NULL && backends[i].be_nsuffix[j].bv_val != NULL; j++ ) { if ( ( SLAP_GLUE_SUBORDINATE( &backends[i] ) ) && noSubs ) { continue; } len = backends[i].be_nsuffix[j].bv_len; if ( len > dnlen ) { /* suffix is longer than DN */ continue; } /* * input DN is normalized, so the separator check * need not look at escaping */ if ( len && len < dnlen && !DN_SEPARATOR( dn->bv_val[(dnlen-len)-1] )) { continue; } if ( strcmp( backends[i].be_nsuffix[j].bv_val, &dn->bv_val[dnlen-len] ) == 0 ) { if( be == NULL ) { be = &backends[i]; if( manageDSAit && len == dnlen && !SLAP_GLUE_SUBORDINATE( be ) ) { continue; } } else { be = &backends[i]; } return be; } } } return be; } int be_issuffix( Backend *be, struct berval *bvsuffix ) { int i; for ( i = 0; be->be_nsuffix != NULL && be->be_nsuffix[i].bv_val != NULL; i++ ) { if ( bvmatch( &be->be_nsuffix[i], bvsuffix ) ) { return( 1 ); } } return( 0 ); } int be_isroot_dn( Backend *be, struct berval *ndn ) { if ( !ndn->bv_len ) { return( 0 ); } if ( !be->be_rootndn.bv_len ) { return( 0 ); } return dn_match( &be->be_rootndn, ndn ); } int be_sync_update( Operation *op ) { return ( SLAP_SYNC_SHADOW( op->o_bd ) && syncrepl_isupdate( op ) ); } int be_slurp_update( Operation *op ) { return ( SLAP_SLURP_SHADOW( op->o_bd ) && be_isupdate_dn( op->o_bd, &op->o_ndn )); } int be_shadow_update( Operation *op ) { return ( SLAP_SHADOW( op->o_bd ) && ( syncrepl_isupdate( op ) || be_isupdate_dn( op->o_bd, &op->o_ndn ))); } int be_isupdate_dn( Backend *be, struct berval *ndn ) { if ( !ndn->bv_len ) return( 0 ); if ( !be->be_update_ndn.bv_len ) return( 0 ); return dn_match( &be->be_update_ndn, ndn ); } struct berval * be_root_dn( Backend *be ) { return &be->be_rootdn; } int be_isroot( Operation *op ) { return be_isroot_dn( op->o_bd, &op->o_ndn ); } int be_isroot_pw( Operation *op ) { int result; if ( ! be_isroot_dn( op->o_bd, &op->o_req_ndn ) ) { return 0; } if( op->o_bd->be_rootpw.bv_len == 0 ) { return 0; } #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD ) ldap_pvt_thread_mutex_lock( &passwd_mutex ); #ifdef SLAPD_SPASSWD lutil_passwd_sasl_conn = op->o_conn->c_sasl_authctx; #endif #endif result = lutil_passwd( &op->o_bd->be_rootpw, &op->orb_cred, NULL, NULL ); #if defined( SLAPD_CRYPT ) || defined( SLAPD_SPASSWD ) #ifdef SLAPD_SPASSWD lutil_passwd_sasl_conn = NULL; #endif ldap_pvt_thread_mutex_unlock( &passwd_mutex ); #endif return result == 0; } int be_entry_release_rw( Operation *op, Entry *e, int rw ) { if ( op->o_bd->be_release ) { /* free and release entry from backend */ return op->o_bd->be_release( op, e, rw ); } else { /* free entry */ entry_free( e ); return 0; } } int backend_unbind( Operation *op, SlapReply *rs ) { int i; for ( i = 0; i < nbackends; i++ ) { #if defined( LDAP_SLAPI ) if ( op->o_pb ) { int rc; if ( i == 0 ) slapi_int_pblock_set_operation( op->o_pb, op ); slapi_pblock_set( op->o_pb, SLAPI_BACKEND, (void *)&backends[i] ); rc = slapi_int_call_plugins( &backends[i], SLAPI_PLUGIN_PRE_UNBIND_FN, (Slapi_PBlock *)op->o_pb ); if ( rc < 0 ) { /* * A preoperation plugin failure will abort the * entire operation. */ Debug(LDAP_DEBUG_TRACE, "do_bind: Unbind preoperation plugin failed\n", 0, 0, 0); return 0; } } #endif /* defined( LDAP_SLAPI ) */ if ( backends[i].be_unbind ) { op->o_bd = &backends[i]; (*backends[i].be_unbind)( op, rs ); } #if defined( LDAP_SLAPI ) if ( op->o_pb != NULL && slapi_int_call_plugins( &backends[i], SLAPI_PLUGIN_POST_UNBIND_FN, (Slapi_PBlock *)op->o_pb ) < 0 ) { Debug(LDAP_DEBUG_TRACE, "do_unbind: Unbind postoperation plugins failed\n", 0, 0, 0); } #endif /* defined( LDAP_SLAPI ) */ } return 0; } int backend_connection_init( Connection *conn ) { int i; for ( i = 0; i < nbackends; i++ ) { if ( backends[i].be_connection_init ) { (*backends[i].be_connection_init)( &backends[i], conn); } } return 0; } int backend_connection_destroy( Connection *conn ) { int i; for ( i = 0; i < nbackends; i++ ) { if ( backends[i].be_connection_destroy ) { (*backends[i].be_connection_destroy)( &backends[i], conn); } } return 0; } static int backend_check_controls( Operation *op, SlapReply *rs ) { LDAPControl **ctrls = op->o_ctrls; rs->sr_err = LDAP_SUCCESS; if( ctrls ) { for( ; *ctrls != NULL ; ctrls++ ) { if( (*ctrls)->ldctl_iscritical && !ldap_charray_inlist( op->o_bd->be_controls, (*ctrls)->ldctl_oid ) ) { /* FIXME: standards compliance issue * * Per RFC 2251 (and LDAPBIS discussions), if the control * is recognized and appropriate for the operation (which * we've already verified), then the server should make * use of the control when performing the operation * (without regard to criticality). This code is incorrect * on two counts. * 1) a service error (e.g., unwillingToPerform) should be * returned where a particular backend cannot service the * operation, * 2) this error should be returned irregardless of the * criticality of the control. */ rs->sr_text = "control unavailable in context"; rs->sr_err = LDAP_UNAVAILABLE_CRITICAL_EXTENSION; break; } } } return rs->sr_err; } int backend_check_restrictions( Operation *op, SlapReply *rs, struct berval *opdata ) { slap_mask_t restrictops; slap_mask_t requires; slap_mask_t opflag; slap_mask_t exopflag = 0; slap_ssf_set_t *ssf; int updateop = 0; int starttls = 0; int session = 0; if( op->o_bd ) { if ( backend_check_controls( op, rs ) != LDAP_SUCCESS ) { return rs->sr_err; } restrictops = op->o_bd->be_restrictops; requires = op->o_bd->be_requires; ssf = &op->o_bd->be_ssf_set; } else { restrictops = frontendDB->be_restrictops; requires = frontendDB->be_requires; ssf = &frontendDB->be_ssf_set; } switch( op->o_tag ) { case LDAP_REQ_ADD: opflag = SLAP_RESTRICT_OP_ADD; updateop++; break; case LDAP_REQ_BIND: opflag = SLAP_RESTRICT_OP_BIND; session++; break; case LDAP_REQ_COMPARE: opflag = SLAP_RESTRICT_OP_COMPARE; break; case LDAP_REQ_DELETE: updateop++; opflag = SLAP_RESTRICT_OP_DELETE; break; case LDAP_REQ_EXTENDED: opflag = SLAP_RESTRICT_OP_EXTENDED; if( !opdata ) { /* treat unspecified as a modify */ opflag = SLAP_RESTRICT_OP_MODIFY; updateop++; break; } if( bvmatch( opdata, &slap_EXOP_START_TLS ) ) { session++; starttls++; exopflag = SLAP_RESTRICT_EXOP_START_TLS; break; } if( bvmatch( opdata, &slap_EXOP_WHOAMI ) ) { exopflag = SLAP_RESTRICT_EXOP_WHOAMI; break; } if ( bvmatch( opdata, &slap_EXOP_CANCEL ) ) { exopflag = SLAP_RESTRICT_EXOP_CANCEL; break; } if ( bvmatch( opdata, &slap_EXOP_MODIFY_PASSWD ) ) { exopflag = SLAP_RESTRICT_EXOP_MODIFY_PASSWD; updateop++; break; } /* treat everything else as a modify */ opflag = SLAP_RESTRICT_OP_MODIFY; updateop++; break; case LDAP_REQ_MODIFY: updateop++; opflag = SLAP_RESTRICT_OP_MODIFY; break; case LDAP_REQ_RENAME: updateop++; opflag = SLAP_RESTRICT_OP_RENAME; break; case LDAP_REQ_SEARCH: opflag = SLAP_RESTRICT_OP_SEARCH; break; case LDAP_REQ_UNBIND: session++; opflag = 0; break; default: rs->sr_text = "restrict operations internal error"; rs->sr_err = LDAP_OTHER; return rs->sr_err; } if ( !starttls ) { /* these checks don't apply to StartTLS */ rs->sr_err = LDAP_CONFIDENTIALITY_REQUIRED; if( op->o_transport_ssf < ssf->sss_transport ) { rs->sr_text = op->o_transport_ssf ? "stronger transport confidentiality required" : "transport confidentiality required"; return rs->sr_err; } if( op->o_tls_ssf < ssf->sss_tls ) { rs->sr_text = op->o_tls_ssf ? "stronger TLS confidentiality required" : "TLS confidentiality required"; return rs->sr_err; } if( op->o_tag == LDAP_REQ_BIND && opdata == NULL ) { /* simple bind specific check */ if( op->o_ssf < ssf->sss_simple_bind ) { rs->sr_text = op->o_ssf ? "stronger confidentiality required" : "confidentiality required"; return rs->sr_err; } } if( op->o_tag != LDAP_REQ_BIND || opdata == NULL ) { /* these checks don't apply to SASL bind */ if( op->o_sasl_ssf < ssf->sss_sasl ) { rs->sr_text = op->o_sasl_ssf ? "stronger SASL confidentiality required" : "SASL confidentiality required"; return rs->sr_err; } if( op->o_ssf < ssf->sss_ssf ) { rs->sr_text = op->o_ssf ? "stronger confidentiality required" : "confidentiality required"; return rs->sr_err; } } if( updateop ) { if( op->o_transport_ssf < ssf->sss_update_transport ) { rs->sr_text = op->o_transport_ssf ? "stronger transport confidentiality required for update" : "transport confidentiality required for update"; return rs->sr_err; } if( op->o_tls_ssf < ssf->sss_update_tls ) { rs->sr_text = op->o_tls_ssf ? "stronger TLS confidentiality required for update" : "TLS confidentiality required for update"; return rs->sr_err; } if( op->o_sasl_ssf < ssf->sss_update_sasl ) { rs->sr_text = op->o_sasl_ssf ? "stronger SASL confidentiality required for update" : "SASL confidentiality required for update"; return rs->sr_err; } if( op->o_ssf < ssf->sss_update_ssf ) { rs->sr_text = op->o_ssf ? "stronger confidentiality required for update" : "confidentiality required for update"; return rs->sr_err; } if( !( global_allows & SLAP_ALLOW_UPDATE_ANON ) && op->o_ndn.bv_len == 0 ) { rs->sr_text = "modifications require authentication"; rs->sr_err = LDAP_STRONG_AUTH_REQUIRED; return rs->sr_err; } #ifdef SLAP_X_LISTENER_MOD if ( op->o_conn->c_listener && ! ( op->o_conn->c_listener->sl_perms & ( op->o_ndn.bv_len > 0 ? S_IWUSR : S_IWOTH ) ) ) { /* no "w" mode means readonly */ rs->sr_text = "modifications not allowed on this listener"; rs->sr_err = LDAP_UNWILLING_TO_PERFORM; return rs->sr_err; } #endif /* SLAP_X_LISTENER_MOD */ } } if ( !session ) { /* these checks don't apply to Bind, StartTLS, or Unbind */ if( requires & SLAP_REQUIRE_STRONG ) { /* should check mechanism */ if( ( op->o_transport_ssf < ssf->sss_transport && op->o_authtype == LDAP_AUTH_SIMPLE ) || op->o_dn.bv_len == 0 ) { rs->sr_text = "strong(er) authentication required"; rs->sr_err = LDAP_STRONG_AUTH_REQUIRED; return rs->sr_err; } } if( requires & SLAP_REQUIRE_SASL ) { if( op->o_authtype != LDAP_AUTH_SASL || op->o_dn.bv_len == 0 ) { rs->sr_text = "SASL authentication required"; rs->sr_err = LDAP_STRONG_AUTH_REQUIRED; return rs->sr_err; } } if( requires & SLAP_REQUIRE_AUTHC ) { if( op->o_dn.bv_len == 0 ) { rs->sr_text = "authentication required"; rs->sr_err = LDAP_UNWILLING_TO_PERFORM; return rs->sr_err; } } if( requires & SLAP_REQUIRE_BIND ) { int version; ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex ); version = op->o_conn->c_protocol; ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex ); if( !version ) { /* no bind has occurred */ rs->sr_text = "BIND required"; rs->sr_err = LDAP_OPERATIONS_ERROR; return rs->sr_err; } } if( requires & SLAP_REQUIRE_LDAP_V3 ) { if( op->o_protocol < LDAP_VERSION3 ) { /* no bind has occurred */ rs->sr_text = "operation restricted to LDAPv3 clients"; rs->sr_err = LDAP_OPERATIONS_ERROR; return rs->sr_err; } } #ifdef SLAP_X_LISTENER_MOD if ( !starttls && op->o_dn.bv_len == 0 ) { if ( op->o_conn->c_listener && !( op->o_conn->c_listener->sl_perms & S_IXOTH )) { /* no "x" mode means bind required */ rs->sr_text = "bind required on this listener"; rs->sr_err = LDAP_STRONG_AUTH_REQUIRED; return rs->sr_err; } } if ( !starttls && !updateop ) { if ( op->o_conn->c_listener && !( op->o_conn->c_listener->sl_perms & ( op->o_dn.bv_len > 0 ? S_IRUSR : S_IROTH ))) { /* no "r" mode means no read */ rs->sr_text = "read not allowed on this listener"; rs->sr_err = LDAP_UNWILLING_TO_PERFORM; return rs->sr_err; } } #endif /* SLAP_X_LISTENER_MOD */ } if( ( restrictops & opflag ) || ( exopflag && ( restrictops & exopflag ) ) ) { if( ( restrictops & SLAP_RESTRICT_OP_MASK) == SLAP_RESTRICT_OP_READS ) { rs->sr_text = "read operations restricted"; } else if ( restrictops & exopflag ) { rs->sr_text = "extended operation restricted"; } else { rs->sr_text = "operation restricted"; } rs->sr_err = LDAP_UNWILLING_TO_PERFORM; return rs->sr_err; } rs->sr_err = LDAP_SUCCESS; return rs->sr_err; } int backend_check_referrals( Operation *op, SlapReply *rs ) { rs->sr_err = LDAP_SUCCESS; if( op->o_bd->be_chk_referrals ) { rs->sr_err = op->o_bd->be_chk_referrals( op, rs ); if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_REFERRAL ) { send_ldap_result( op, rs ); } } return rs->sr_err; } int be_entry_get_rw( Operation *op, struct berval *ndn, ObjectClass *oc, AttributeDescription *at, int rw, Entry **e ) { int rc; *e = NULL; if (op->o_bd == NULL) { rc = LDAP_NO_SUCH_OBJECT; } else if ( op->o_bd->be_fetch ) { rc = ( op->o_bd->be_fetch )( op, ndn, oc, at, rw, e ); } else { rc = LDAP_UNWILLING_TO_PERFORM; } return rc; } int backend_group( Operation *op, Entry *target, struct berval *gr_ndn, struct berval *op_ndn, ObjectClass *group_oc, AttributeDescription *group_at ) { Entry *e; Attribute *a; int rc; GroupAssertion *g; Backend *be = op->o_bd; if ( op->o_abandon ) return SLAPD_ABANDON; op->o_bd = select_backend( gr_ndn, 0, 0 ); for (g = op->o_groups; g; g=g->ga_next) { if (g->ga_be != op->o_bd || g->ga_oc != group_oc || g->ga_at != group_at || g->ga_len != gr_ndn->bv_len) continue; if (strcmp( g->ga_ndn, gr_ndn->bv_val ) == 0) break; } if (g) { rc = g->ga_res; goto done; } if ( target && dn_match( &target->e_nname, gr_ndn ) ) { e = target; rc = 0; } else { rc = be_entry_get_rw(op, gr_ndn, group_oc, group_at, 0, &e ); } if ( e ) { #ifdef LDAP_SLAPI if ( op->o_pb != NULL ) { init_group_pblock( op, target, e, op_ndn, group_at ); rc = call_group_preop_plugins( op ); if ( rc == LDAP_SUCCESS ) { goto done; } } #endif /* LDAP_SLAPI */ a = attr_find( e->e_attrs, group_at ); if ( a ) { /* If the attribute is a subtype of labeledURI, treat this as * a dynamic group ala groupOfURLs */ if (is_at_subtype( group_at->ad_type, slap_schema.si_ad_labeledURI->ad_type ) ) { int i; LDAPURLDesc *ludp; struct berval bv, nbase; Filter *filter; Entry *user; Backend *b2 = op->o_bd; if ( target && dn_match( &target->e_nname, op_ndn ) ) { user = target; } else { op->o_bd = select_backend( op_ndn, 0, 0 ); rc = be_entry_get_rw(op, op_ndn, NULL, NULL, 0, &user ); } if ( rc == 0 ) { rc = 1; for (i=0; a->a_vals[i].bv_val; i++) { if ( ldap_url_parse( a->a_vals[i].bv_val, &ludp ) != LDAP_SUCCESS ) { continue; } nbase.bv_val = NULL; /* host part must be empty */ /* attrs and extensions parts must be empty */ if (( ludp->lud_host && *ludp->lud_host ) || ludp->lud_attrs || ludp->lud_exts ) { goto loopit; } ber_str2bv( ludp->lud_dn, 0, 0, &bv ); if ( dnNormalize( 0, NULL, NULL, &bv, &nbase, op->o_tmpmemctx ) != LDAP_SUCCESS ) { goto loopit; } switch(ludp->lud_scope) { case LDAP_SCOPE_BASE: if ( !dn_match( &nbase, op_ndn )) goto loopit; break; case LDAP_SCOPE_ONELEVEL: dnParent(op_ndn, &bv ); if ( !dn_match( &nbase, &bv )) goto loopit; break; case LDAP_SCOPE_SUBTREE: if ( !dnIsSuffix( op_ndn, &nbase )) goto loopit; break; #ifdef LDAP_SCOPE_SUBORDINATE case LDAP_SCOPE_SUBORDINATE: if ( dn_match( &nbase, op_ndn ) && !dnIsSuffix(op_ndn, &nbase )) { goto loopit; } #endif } filter = str2filter_x( op, ludp->lud_filter ); if ( filter ) { if ( test_filter( NULL, user, filter ) == LDAP_COMPARE_TRUE ) { rc = 0; } filter_free_x( op, filter ); } loopit: ldap_free_urldesc( ludp ); if ( nbase.bv_val ) { op->o_tmpfree( nbase.bv_val, op->o_tmpmemctx ); } if ( rc == 0 ) break; } if ( user != target ) { be_entry_release_r( op, user ); } } op->o_bd = b2; } else { rc = value_find_ex( group_at, SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH | SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH, a->a_nvals, op_ndn, op->o_tmpmemctx ); } } else { rc = LDAP_NO_SUCH_ATTRIBUTE; } if (e != target ) { be_entry_release_r( op, e ); } } else { rc = LDAP_NO_SUCH_OBJECT; } #ifdef LDAP_SLAPI if ( op->o_pb ) call_group_postop_plugins( op ); #endif /* LDAP_SLAPI */ if ( op->o_tag != LDAP_REQ_BIND && !op->o_do_not_cache ) { g = op->o_tmpalloc(sizeof(GroupAssertion) + gr_ndn->bv_len, op->o_tmpmemctx); g->ga_be = op->o_bd; g->ga_oc = group_oc; g->ga_at = group_at; g->ga_res = rc; g->ga_len = gr_ndn->bv_len; strcpy(g->ga_ndn, gr_ndn->bv_val); g->ga_next = op->o_groups; op->o_groups = g; } done: op->o_bd = be; return rc; } #ifdef LDAP_SLAPI static int backend_compute_output_attr(computed_attr_context *c, Slapi_Attr *a, Slapi_Entry *e) { BerVarray v; int rc; BerVarray *vals = (BerVarray *)c->cac_private; Operation *op = NULL; int i, j; slapi_pblock_get( c->cac_pb, SLAPI_OPERATION, &op ); if ( op == NULL ) { return 1; } if ( op->o_conn && access_allowed( op, e, a->a_desc, NULL, ACL_AUTH, &c->cac_acl_state ) == 0 ) { return 1; } for ( i=0; a->a_vals[i].bv_val; i++ ) ; v = op->o_tmpalloc( sizeof(struct berval) * (i+1), op->o_tmpmemctx ); for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) { if ( op->o_conn && access_allowed( op, e, a->a_desc, &a->a_nvals[i], ACL_AUTH, &c->cac_acl_state ) == 0 ) { continue; } ber_dupbv_x( &v[j], &a->a_nvals[i], op->o_tmpmemctx ); if (v[j].bv_val ) j++; } if (j == 0) { op->o_tmpfree( v, op->o_tmpmemctx ); *vals = NULL; rc = 1; } else { v[j].bv_val = NULL; v[j].bv_len = 0; *vals = v; rc = 0; } return rc; } #endif /* LDAP_SLAPI */ int backend_attribute( Operation *op, Entry *target, struct berval *edn, AttributeDescription *entry_at, BerVarray *vals, slap_access_t access ) { Entry *e; Attribute *a; int i, j, rc = LDAP_SUCCESS; AccessControlState acl_state = ACL_STATE_INIT; Backend *be = op->o_bd; op->o_bd = select_backend( edn, 0, 0 ); if ( target && dn_match( &target->e_nname, edn ) ) { e = target; } else { rc = be_entry_get_rw(op, edn, NULL, entry_at, 0, &e ); } if ( e ) { a = attr_find( e->e_attrs, entry_at ); if ( a ) { BerVarray v; if ( op->o_conn && access > ACL_NONE && access_allowed( op, e, entry_at, NULL, access, &acl_state ) == 0 ) { rc = LDAP_INSUFFICIENT_ACCESS; goto freeit; } for ( i=0; a->a_vals[i].bv_val; i++ ) ; v = op->o_tmpalloc( sizeof(struct berval) * (i+1), op->o_tmpmemctx ); for ( i=0,j=0; a->a_vals[i].bv_val; i++ ) { if ( op->o_conn && access > ACL_NONE && access_allowed( op, e, entry_at, &a->a_nvals[i], access, &acl_state ) == 0 ) { continue; } ber_dupbv_x( &v[j], &a->a_nvals[i], op->o_tmpmemctx ); if (v[j].bv_val ) j++; } if (j == 0) { op->o_tmpfree( v, op->o_tmpmemctx ); *vals = NULL; rc = LDAP_INSUFFICIENT_ACCESS; } else { v[j].bv_val = NULL; v[j].bv_len = 0; *vals = v; rc = LDAP_SUCCESS; } } #ifdef LDAP_SLAPI else if ( op->o_pb ) { /* try any computed attributes */ computed_attr_context ctx; AttributeName aname; slapi_int_pblock_set_operation( op->o_pb, op ); ctx.cac_pb = op->o_pb; ctx.cac_attrs = NULL; ctx.cac_userattrs = 0; ctx.cac_opattrs = 0; ctx.cac_acl_state = acl_state; ctx.cac_private = (void *)vals; if ( compute_evaluator( &ctx, entry_at->ad_cname.bv_val, e, backend_compute_output_attr ) == 1) rc = LDAP_INSUFFICIENT_ACCESS; else rc = LDAP_SUCCESS; } #endif /* LDAP_SLAPI */ freeit: if (e != target ) { be_entry_release_r( op, e ); } } op->o_bd = be; return rc; } int backend_operational( Operation *op, SlapReply *rs ) { Attribute **ap; int rc = 0; for ( ap = &rs->sr_operational_attrs; *ap; ap = &(*ap)->a_next ) /* just count them */ ; /* * If operational attributes (allegedly) are required, * and the backend supports specific operational attributes, * add them to the attribute list */ if ( SLAP_OPATTRS( rs->sr_attr_flags ) || ( op->ors_attrs && ad_inlist( slap_schema.si_ad_entryDN, op->ors_attrs ))) { *ap = slap_operational_entryDN( rs->sr_entry ); ap = &(*ap)->a_next; } if ( SLAP_OPATTRS( rs->sr_attr_flags ) || ( op->ors_attrs && ad_inlist( slap_schema.si_ad_subschemaSubentry, op->ors_attrs ))) { *ap = slap_operational_subschemaSubentry( op->o_bd ); ap = &(*ap)->a_next; } if (( SLAP_OPATTRS( rs->sr_attr_flags ) || op->ors_attrs ) && op->o_bd && op->o_bd->be_operational != NULL ) { Attribute *a; a = rs->sr_operational_attrs; rs->sr_operational_attrs = NULL; rc = op->o_bd->be_operational( op, rs ); *ap = rs->sr_operational_attrs; if ( a != NULL ) { rs->sr_operational_attrs = a; } for ( ; *ap; ap = &(*ap)->a_next ) /* just count them */ ; } return rc; } #ifdef LDAP_SLAPI static void init_group_pblock( Operation *op, Entry *target, Entry *e, struct berval *op_ndn, AttributeDescription *group_at ) { slapi_int_pblock_set_operation( op->o_pb, op ); slapi_pblock_set( op->o_pb, SLAPI_X_GROUP_ENTRY, (void *)e ); slapi_pblock_set( op->o_pb, SLAPI_X_GROUP_OPERATION_DN, (void *)op_ndn->bv_val ); slapi_pblock_set( op->o_pb, SLAPI_X_GROUP_ATTRIBUTE, (void *)group_at->ad_cname.bv_val ); slapi_pblock_set( op->o_pb, SLAPI_X_GROUP_TARGET_ENTRY, (void *)target ); } static int call_group_preop_plugins( Operation *op ) { int rc; rc = slapi_int_call_plugins( op->o_bd, SLAPI_X_PLUGIN_PRE_GROUP_FN, op->o_pb ); if ( rc < 0 ) { if (( slapi_pblock_get( op->o_pb, SLAPI_RESULT_CODE, (void *)&rc ) != 0 ) || rc == LDAP_SUCCESS ) { rc = LDAP_NO_SUCH_ATTRIBUTE; } } else { rc = LDAP_SUCCESS; } return rc; } static void call_group_postop_plugins( Operation *op ) { (void) slapi_int_call_plugins( op->o_bd, SLAPI_X_PLUGIN_POST_GROUP_FN, op->o_pb ); } #endif /* LDAP_SLAPI */