/* modify.c - bdb backend modify routine */ /* $OpenLDAP: pkg/ldap/servers/slapd/back-bdb/modify.c,v 1.124.2.16 2007/01/02 21:44:00 kurt Exp $ */ /* This work is part of OpenLDAP Software . * * Copyright 2000-2007 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 * . */ #include "portable.h" #include #include #include #include "back-bdb.h" static struct berval scbva[] = { BER_BVC("glue"), BER_BVNULL }; int bdb_modify_internal( Operation *op, DB_TXN *tid, Modifications *modlist, Entry *e, const char **text, char *textbuf, size_t textlen ) { int rc, err; Modification *mod; Modifications *ml; Attribute *save_attrs; Attribute *ap; int glue_attr_delete = 0; Debug( LDAP_DEBUG_TRACE, "bdb_modify_internal: 0x%08lx: %s\n", e->e_id, e->e_dn, 0); if ( !acl_check_modlist( op, e, modlist )) { return LDAP_INSUFFICIENT_ACCESS; } /* save_attrs will be disposed of by bdb_cache_modify */ save_attrs = e->e_attrs; e->e_attrs = attrs_dup( e->e_attrs ); for ( ml = modlist; ml != NULL; ml = ml->sml_next ) { int match; mod = &ml->sml_mod; switch( mod->sm_op ) { case LDAP_MOD_ADD: case LDAP_MOD_REPLACE: if ( mod->sm_desc == slap_schema.si_ad_structuralObjectClass ) { value_match( &match, slap_schema.si_ad_structuralObjectClass, slap_schema.si_ad_structuralObjectClass-> ad_type->sat_equality, SLAP_MR_VALUE_OF_ATTRIBUTE_SYNTAX, &mod->sm_values[0], &scbva[0], text ); if ( !match ) glue_attr_delete = 1; } } if ( glue_attr_delete ) break; } if ( glue_attr_delete ) { Attribute **app = &e->e_attrs; while ( *app != NULL ) { if ( !is_at_operational( (*app)->a_desc->ad_type )) { Attribute *save = *app; *app = (*app)->a_next; attr_free( save ); continue; } app = &(*app)->a_next; } } for ( ml = modlist; ml != NULL; ml = ml->sml_next ) { mod = &ml->sml_mod; switch ( mod->sm_op ) { case LDAP_MOD_ADD: Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: add %s\n", mod->sm_desc->ad_cname.bv_val, 0, 0); err = modify_add_values( e, mod, get_permissiveModify(op), text, textbuf, textlen ); if( err != LDAP_SUCCESS ) { Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n", err, *text, 0); } break; case LDAP_MOD_DELETE: if ( glue_attr_delete ) { err = LDAP_SUCCESS; break; } Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: delete %s\n", mod->sm_desc->ad_cname.bv_val, 0, 0); err = modify_delete_values( e, mod, get_permissiveModify(op), text, textbuf, textlen ); assert( err != LDAP_TYPE_OR_VALUE_EXISTS ); if( err != LDAP_SUCCESS ) { Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n", err, *text, 0); } break; case LDAP_MOD_REPLACE: Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: replace %s\n", mod->sm_desc->ad_cname.bv_val, 0, 0); err = modify_replace_values( e, mod, get_permissiveModify(op), text, textbuf, textlen ); if( err != LDAP_SUCCESS ) { Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n", err, *text, 0); } break; case LDAP_MOD_INCREMENT: Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: increment %s\n", mod->sm_desc->ad_cname.bv_val, 0, 0); err = modify_increment_values( e, mod, get_permissiveModify(op), text, textbuf, textlen ); if( err != LDAP_SUCCESS ) { Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n", err, *text, 0); } break; case SLAP_MOD_SOFTADD: Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: softadd %s\n", mod->sm_desc->ad_cname.bv_val, 0, 0); /* Avoid problems in index_add_mods() * We need to add index if necessary. */ mod->sm_op = LDAP_MOD_ADD; err = modify_add_values( e, mod, get_permissiveModify(op), text, textbuf, textlen ); mod->sm_op = SLAP_MOD_SOFTADD; if ( err == LDAP_TYPE_OR_VALUE_EXISTS ) { err = LDAP_SUCCESS; } if( err != LDAP_SUCCESS ) { Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n", err, *text, 0); } break; default: Debug(LDAP_DEBUG_ANY, "bdb_modify_internal: invalid op %d\n", mod->sm_op, 0, 0); *text = "Invalid modify operation"; err = LDAP_OTHER; Debug(LDAP_DEBUG_ARGS, "bdb_modify_internal: %d %s\n", err, *text, 0); } if ( err != LDAP_SUCCESS ) { attrs_free( e->e_attrs ); e->e_attrs = save_attrs; /* unlock entry, delete from cache */ return err; } /* If objectClass was modified, reset the flags */ if ( mod->sm_desc == slap_schema.si_ad_objectClass ) { e->e_ocflags = 0; } if ( glue_attr_delete ) e->e_ocflags = 0; /* check if modified attribute was indexed * but not in case of NOOP... */ err = bdb_index_is_indexed( op->o_bd, mod->sm_desc ); if ( err == LDAP_SUCCESS && !op->o_noop ) { ap = attr_find( save_attrs, mod->sm_desc ); if ( ap ) ap->a_flags |= SLAP_ATTR_IXDEL; ap = attr_find( e->e_attrs, mod->sm_desc ); if ( ap ) ap->a_flags |= SLAP_ATTR_IXADD; } } /* check that the entry still obeys the schema */ rc = entry_schema_check( op, e, save_attrs, get_manageDIT(op), text, textbuf, textlen ); if ( rc != LDAP_SUCCESS || op->o_noop ) { attrs_free( e->e_attrs ); /* clear the indexing flags */ for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) { ap->a_flags = 0; } e->e_attrs = save_attrs; if ( rc != LDAP_SUCCESS ) { Debug( LDAP_DEBUG_ANY, "entry failed schema check: %s\n", *text, 0, 0 ); } /* if NOOP then silently revert to saved attrs */ return rc; } /* update the indices of the modified attributes */ /* start with deleting the old index entries */ for ( ap = save_attrs; ap != NULL; ap = ap->a_next ) { if ( ap->a_flags & SLAP_ATTR_IXDEL ) { rc = bdb_index_values( op, tid, ap->a_desc, ap->a_nvals, e->e_id, SLAP_INDEX_DELETE_OP ); if ( rc != LDAP_SUCCESS ) { attrs_free( e->e_attrs ); e->e_attrs = save_attrs; Debug( LDAP_DEBUG_ANY, "Attribute index delete failure", 0, 0, 0 ); return rc; } ap->a_flags &= ~SLAP_ATTR_IXDEL; } } /* add the new index entries */ for ( ap = e->e_attrs; ap != NULL; ap = ap->a_next ) { if (ap->a_flags & SLAP_ATTR_IXADD) { rc = bdb_index_values( op, tid, ap->a_desc, ap->a_nvals, e->e_id, SLAP_INDEX_ADD_OP ); if ( rc != LDAP_SUCCESS ) { attrs_free( e->e_attrs ); e->e_attrs = save_attrs; Debug( LDAP_DEBUG_ANY, "Attribute index add failure", 0, 0, 0 ); return rc; } ap->a_flags &= ~SLAP_ATTR_IXADD; } } return rc; } int bdb_modify( Operation *op, SlapReply *rs ) { struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private; Entry *e = NULL; EntryInfo *ei = NULL; int manageDSAit = get_manageDSAit( op ); char textbuf[SLAP_TEXT_BUFLEN]; size_t textlen = sizeof textbuf; DB_TXN *ltid = NULL, *lt2; struct bdb_op_info opinfo = {0}; Entry dummy = {0}; int fakeroot = 0; u_int32_t locker = 0; DB_LOCK lock; int num_retries = 0; LDAPControl **preread_ctrl = NULL; LDAPControl **postread_ctrl = NULL; LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS]; int num_ctrls = 0; int rc; Debug( LDAP_DEBUG_ARGS, LDAP_XSTRING(bdb_modify) ": %s\n", op->o_req_dn.bv_val, 0, 0 ); ctrls[num_ctrls] = NULL; slap_mods_opattrs( op, &op->orm_modlist, 1 ); if( 0 ) { retry: /* transaction retry */ if ( dummy.e_attrs ) { attrs_free( dummy.e_attrs ); dummy.e_attrs = NULL; } if( e != NULL ) { bdb_unlocked_cache_return_entry_w(&bdb->bi_cache, e); e = NULL; } Debug(LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modify) ": retrying...\n", 0, 0, 0); rs->sr_err = TXN_ABORT( ltid ); ltid = NULL; op->o_private = NULL; op->o_do_not_cache = opinfo.boi_acl_cache; if( rs->sr_err != 0 ) { rs->sr_err = LDAP_OTHER; rs->sr_text = "internal error"; goto return_results; } if ( op->o_abandon ) { rs->sr_err = SLAPD_ABANDON; goto return_results; } bdb_trans_backoff( ++num_retries ); } /* begin transaction */ rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, NULL, <id, bdb->bi_db_opflags ); rs->sr_text = NULL; if( rs->sr_err != 0 ) { Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modify) ": txn_begin failed: " "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 ); rs->sr_err = LDAP_OTHER; rs->sr_text = "internal error"; goto return_results; } locker = TXN_ID ( ltid ); opinfo.boi_bdb = op->o_bd; opinfo.boi_txn = ltid; opinfo.boi_locker = locker; opinfo.boi_err = 0; opinfo.boi_acl_cache = op->o_do_not_cache; op->o_private = &opinfo; /* get entry or ancestor */ rs->sr_err = bdb_dn2entry( op, ltid, &op->o_req_ndn, &ei, 1, locker, &lock ); if ( rs->sr_err != 0 ) { Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modify) ": dn2entry failed (%d)\n", rs->sr_err, 0, 0 ); switch( rs->sr_err ) { case DB_LOCK_DEADLOCK: case DB_LOCK_NOTGRANTED: goto retry; case DB_NOTFOUND: if ( BER_BVISEMPTY( &op->o_req_ndn )) { struct berval gluebv = BER_BVC("glue"); e = ch_calloc( 1, sizeof(Entry)); e->e_name.bv_val = ch_strdup( "" ); ber_dupbv( &e->e_nname, &e->e_name ); attr_merge_one( e, slap_schema.si_ad_objectClass, &gluebv, NULL ); attr_merge_one( e, slap_schema.si_ad_structuralObjectClass, &gluebv, NULL ); e->e_private = ei; fakeroot = 1; rs->sr_err = 0; } break; case LDAP_BUSY: rs->sr_text = "ldap server busy"; goto return_results; default: rs->sr_err = LDAP_OTHER; rs->sr_text = "internal error"; goto return_results; } } if ( !fakeroot ) { e = ei->bei_e; } /* acquire and lock entry */ /* FIXME: dn2entry() should return non-glue entry */ if (( rs->sr_err == DB_NOTFOUND ) || ( !manageDSAit && e && is_entry_glue( e ))) { if ( e != NULL ) { rs->sr_matched = ch_strdup( e->e_dn ); rs->sr_ref = is_entry_referral( e ) ? get_entry_referrals( op, e ) : NULL; bdb_unlocked_cache_return_entry_r (&bdb->bi_cache, e); e = NULL; } else { rs->sr_ref = referral_rewrite( default_referral, NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT ); } rs->sr_err = LDAP_REFERRAL; send_ldap_result( op, rs ); if ( rs->sr_ref != default_referral ) { ber_bvarray_free( rs->sr_ref ); } free( (char *)rs->sr_matched ); rs->sr_ref = NULL; rs->sr_matched = NULL; goto done; } if ( !manageDSAit && is_entry_referral( e ) ) { /* entry is a referral, don't allow modify */ rs->sr_ref = get_entry_referrals( op, e ); Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modify) ": entry is referral\n", 0, 0, 0 ); rs->sr_err = LDAP_REFERRAL; rs->sr_matched = e->e_name.bv_val; send_ldap_result( op, rs ); ber_bvarray_free( rs->sr_ref ); rs->sr_ref = NULL; rs->sr_matched = NULL; goto done; } if ( get_assert( op ) && ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE )) { rs->sr_err = LDAP_ASSERTION_FAILED; goto return_results; } if( op->o_preread ) { if( preread_ctrl == NULL ) { preread_ctrl = &ctrls[num_ctrls++]; ctrls[num_ctrls] = NULL; } if ( slap_read_controls( op, rs, e, &slap_pre_read_bv, preread_ctrl ) ) { Debug( LDAP_DEBUG_TRACE, "<=- " LDAP_XSTRING(bdb_modify) ": pre-read failed!\n", 0, 0, 0 ); goto return_results; } } /* nested transaction */ rs->sr_err = TXN_BEGIN( bdb->bi_dbenv, ltid, <2, bdb->bi_db_opflags ); rs->sr_text = NULL; if( rs->sr_err != 0 ) { Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modify) ": txn_begin(2) failed: " "%s (%d)\n", db_strerror(rs->sr_err), rs->sr_err, 0 ); rs->sr_err = LDAP_OTHER; rs->sr_text = "internal error"; goto return_results; } /* Modify the entry */ dummy = *e; rs->sr_err = bdb_modify_internal( op, lt2, op->oq_modify.rs_modlist, &dummy, &rs->sr_text, textbuf, textlen ); if( rs->sr_err != LDAP_SUCCESS ) { Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modify) ": modify failed (%d)\n", rs->sr_err, 0, 0 ); if ( (rs->sr_err == LDAP_INSUFFICIENT_ACCESS) && opinfo.boi_err ) { rs->sr_err = opinfo.boi_err; } /* Only free attrs if they were dup'd. */ if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL; switch( rs->sr_err ) { case DB_LOCK_DEADLOCK: case DB_LOCK_NOTGRANTED: goto retry; } goto return_results; } /* change the entry itself */ rs->sr_err = bdb_id2entry_update( op->o_bd, lt2, &dummy ); if ( rs->sr_err != 0 ) { Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modify) ": id2entry update failed " "(%d)\n", rs->sr_err, 0, 0 ); switch( rs->sr_err ) { case DB_LOCK_DEADLOCK: case DB_LOCK_NOTGRANTED: goto retry; } rs->sr_text = "entry update failed"; goto return_results; } if ( TXN_COMMIT( lt2, 0 ) != 0 ) { rs->sr_err = LDAP_OTHER; rs->sr_text = "txn_commit(2) failed"; goto return_results; } if( op->o_postread ) { if( postread_ctrl == NULL ) { postread_ctrl = &ctrls[num_ctrls++]; ctrls[num_ctrls] = NULL; } if( slap_read_controls( op, rs, &dummy, &slap_post_read_bv, postread_ctrl ) ) { Debug( LDAP_DEBUG_TRACE, "<=- " LDAP_XSTRING(bdb_modify) ": post-read failed!\n", 0, 0, 0 ); goto return_results; } } if( op->o_noop ) { if ( ( rs->sr_err = TXN_ABORT( ltid ) ) != 0 ) { rs->sr_text = "txn_abort (no-op) failed"; } else { rs->sr_err = LDAP_X_NO_OPERATION; ltid = NULL; goto return_results; } } else { /* may have changed in bdb_modify_internal() */ e->e_ocflags = dummy.e_ocflags; if ( fakeroot ) { e->e_private = NULL; entry_free( e ); e = NULL; attrs_free( dummy.e_attrs ); } else { rc = bdb_cache_modify( e, dummy.e_attrs, bdb->bi_dbenv, locker, &lock ); switch( rc ) { case DB_LOCK_DEADLOCK: case DB_LOCK_NOTGRANTED: goto retry; } } dummy.e_attrs = NULL; rs->sr_err = TXN_COMMIT( ltid, 0 ); } ltid = NULL; op->o_private = NULL; if( rs->sr_err != 0 ) { Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modify) ": txn_%s failed: %s (%d)\n", op->o_noop ? "abort (no-op)" : "commit", db_strerror(rs->sr_err), rs->sr_err ); rs->sr_err = LDAP_OTHER; rs->sr_text = "commit failed"; goto return_results; } Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_modify) ": updated%s id=%08lx dn=\"%s\"\n", op->o_noop ? " (no-op)" : "", dummy.e_id, op->o_req_dn.bv_val ); rs->sr_err = LDAP_SUCCESS; rs->sr_text = NULL; if( num_ctrls ) rs->sr_ctrls = ctrls; return_results: if( dummy.e_attrs ) { attrs_free( dummy.e_attrs ); } send_ldap_result( op, rs ); if( rs->sr_err == LDAP_SUCCESS && bdb->bi_txn_cp ) { TXN_CHECKPOINT( bdb->bi_dbenv, bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 ); } done: slap_graduate_commit_csn( op ); if( ltid != NULL ) { TXN_ABORT( ltid ); } op->o_private = NULL; if( e != NULL ) { bdb_unlocked_cache_return_entry_w (&bdb->bi_cache, e); } if( preread_ctrl != NULL && (*preread_ctrl) != NULL ) { slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx ); slap_sl_free( *preread_ctrl, op->o_tmpmemctx ); } if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) { slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx ); slap_sl_free( *postread_ctrl, op->o_tmpmemctx ); } return rs->sr_err; }