diff options
Diffstat (limited to 'servers/slapd/back-bdb/add.c')
| -rw-r--r-- | servers/slapd/back-bdb/add.c | 547 |
1 files changed, 547 insertions, 0 deletions
diff --git a/servers/slapd/back-bdb/add.c b/servers/slapd/back-bdb/add.c new file mode 100644 index 0000000..bc808da --- /dev/null +++ b/servers/slapd/back-bdb/add.c @@ -0,0 +1,547 @@ +/* add.c - ldap BerkeleyDB back-end add routine */ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 2000-2018 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 + * <http://www.OpenLDAP.org/license.html>. + */ + +#include "portable.h" + +#include <stdio.h> +#include <ac/string.h> + +#include "back-bdb.h" + +int +bdb_add(Operation *op, SlapReply *rs ) +{ + struct bdb_info *bdb = (struct bdb_info *) op->o_bd->be_private; + struct berval pdn; + Entry *p = NULL, *oe = op->ora_e; + EntryInfo *ei; + char textbuf[SLAP_TEXT_BUFLEN]; + size_t textlen = sizeof textbuf; + AttributeDescription *children = slap_schema.si_ad_children; + AttributeDescription *entry = slap_schema.si_ad_entry; + DB_TXN *ltid = NULL, *lt2; + ID eid = NOID; + struct bdb_op_info opinfo = {{{ 0 }}}; + int subentry; + DB_LOCK lock; + + int num_retries = 0; + int success; + + LDAPControl **postread_ctrl = NULL; + LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS]; + int num_ctrls = 0; + +#ifdef LDAP_X_TXN + int settle = 0; +#endif + + Debug(LDAP_DEBUG_ARGS, "==> " LDAP_XSTRING(bdb_add) ": %s\n", + op->ora_e->e_name.bv_val, 0, 0); + +#ifdef LDAP_X_TXN + if( op->o_txnSpec ) { + /* acquire connection lock */ + ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex ); + if( op->o_conn->c_txn == CONN_TXN_INACTIVE ) { + rs->sr_text = "invalid transaction identifier"; + rs->sr_err = LDAP_X_TXN_ID_INVALID; + goto txnReturn; + } else if( op->o_conn->c_txn == CONN_TXN_SETTLE ) { + settle=1; + goto txnReturn; + } + + if( op->o_conn->c_txn_backend == NULL ) { + op->o_conn->c_txn_backend = op->o_bd; + + } else if( op->o_conn->c_txn_backend != op->o_bd ) { + rs->sr_text = "transaction cannot span multiple database contexts"; + rs->sr_err = LDAP_AFFECTS_MULTIPLE_DSAS; + goto txnReturn; + } + + /* insert operation into transaction */ + + rs->sr_text = "transaction specified"; + rs->sr_err = LDAP_X_TXN_SPECIFY_OKAY; + +txnReturn: + /* release connection lock */ + ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex ); + + if( !settle ) { + send_ldap_result( op, rs ); + return rs->sr_err; + } + } +#endif + + ctrls[num_ctrls] = 0; + + /* check entry's schema */ + rs->sr_err = entry_schema_check( op, op->ora_e, NULL, + get_relax(op), 1, NULL, &rs->sr_text, textbuf, textlen ); + if ( rs->sr_err != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_add) ": entry failed schema check: " + "%s (%d)\n", rs->sr_text, rs->sr_err, 0 ); + goto return_results; + } + + /* add opattrs to shadow as well, only missing attrs will actually + * be added; helps compatibility with older OL versions */ + rs->sr_err = slap_add_opattrs( op, &rs->sr_text, textbuf, textlen, 1 ); + if ( rs->sr_err != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_add) ": entry failed op attrs add: " + "%s (%d)\n", rs->sr_text, rs->sr_err, 0 ); + goto return_results; + } + + if ( get_assert( op ) && + ( test_filter( op, op->ora_e, get_assertion( op )) != LDAP_COMPARE_TRUE )) + { + rs->sr_err = LDAP_ASSERTION_FAILED; + goto return_results; + } + + subentry = is_entry_subentry( op->ora_e ); + + if( 0 ) { +retry: /* transaction retry */ + if( p ) { + /* free parent and reader lock */ + if ( p != (Entry *)&slap_entry_root ) { + bdb_unlocked_cache_return_entry_r( bdb, p ); + } + p = NULL; + } + rs->sr_err = TXN_ABORT( ltid ); + ltid = NULL; + LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next ); + opinfo.boi_oe.oe_key = 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_add) ": 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; + } + Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_add) ": txn1 id: %x\n", + ltid->id(ltid), 0, 0 ); + + opinfo.boi_oe.oe_key = bdb; + opinfo.boi_txn = ltid; + opinfo.boi_err = 0; + opinfo.boi_acl_cache = op->o_do_not_cache; + LDAP_SLIST_INSERT_HEAD( &op->o_extra, &opinfo.boi_oe, oe_next ); + + /* + * Get the parent dn and see if the corresponding entry exists. + */ + if ( be_issuffix( op->o_bd, &op->ora_e->e_nname ) ) { + pdn = slap_empty_bv; + } else { + dnParent( &op->ora_e->e_nname, &pdn ); + } + + /* get entry or parent */ + rs->sr_err = bdb_dn2entry( op, ltid, &op->ora_e->e_nname, &ei, + 1, &lock ); + switch( rs->sr_err ) { + case 0: + rs->sr_err = LDAP_ALREADY_EXISTS; + goto return_results; + case DB_NOTFOUND: + break; + case DB_LOCK_DEADLOCK: + case DB_LOCK_NOTGRANTED: + goto retry; + 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; + } + + p = ei->bei_e; + if ( !p ) + p = (Entry *)&slap_entry_root; + + if ( !bvmatch( &pdn, &p->e_nname ) ) { + rs->sr_matched = ber_strdup_x( p->e_name.bv_val, + op->o_tmpmemctx ); + rs->sr_ref = is_entry_referral( p ) + ? get_entry_referrals( op, p ) + : NULL; + if ( p != (Entry *)&slap_entry_root ) + bdb_unlocked_cache_return_entry_r( bdb, p ); + p = NULL; + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_add) ": parent " + "does not exist\n", 0, 0, 0 ); + + rs->sr_err = LDAP_REFERRAL; + rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED; + goto return_results; + } + + rs->sr_err = access_allowed( op, p, + children, NULL, ACL_WADD, NULL ); + + if ( ! rs->sr_err ) { + switch( opinfo.boi_err ) { + case DB_LOCK_DEADLOCK: + case DB_LOCK_NOTGRANTED: + goto retry; + } + + if ( p != (Entry *)&slap_entry_root ) + bdb_unlocked_cache_return_entry_r( bdb, p ); + p = NULL; + + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_add) ": no write access to parent\n", + 0, 0, 0 ); + rs->sr_err = LDAP_INSUFFICIENT_ACCESS; + rs->sr_text = "no write access to parent"; + goto return_results;; + } + + if ( p != (Entry *)&slap_entry_root ) { + if ( is_entry_subentry( p ) ) { + bdb_unlocked_cache_return_entry_r( bdb, p ); + p = NULL; + /* parent is a subentry, don't allow add */ + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_add) ": parent is subentry\n", + 0, 0, 0 ); + rs->sr_err = LDAP_OBJECT_CLASS_VIOLATION; + rs->sr_text = "parent is a subentry"; + goto return_results;; + } + + if ( is_entry_alias( p ) ) { + bdb_unlocked_cache_return_entry_r( bdb, p ); + p = NULL; + /* parent is an alias, don't allow add */ + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_add) ": parent is alias\n", + 0, 0, 0 ); + rs->sr_err = LDAP_ALIAS_PROBLEM; + rs->sr_text = "parent is an alias"; + goto return_results;; + } + + if ( is_entry_referral( p ) ) { + /* parent is a referral, don't allow add */ + rs->sr_matched = ber_strdup_x( p->e_name.bv_val, + op->o_tmpmemctx ); + rs->sr_ref = get_entry_referrals( op, p ); + bdb_unlocked_cache_return_entry_r( bdb, p ); + p = NULL; + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_add) ": parent is referral\n", + 0, 0, 0 ); + + rs->sr_err = LDAP_REFERRAL; + rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED; + goto return_results; + } + + } + + if ( subentry ) { + /* FIXME: */ + /* parent must be an administrative point of the required kind */ + } + + /* free parent and reader lock */ + if ( p != (Entry *)&slap_entry_root ) { + if ( p->e_nname.bv_len ) { + struct berval ppdn; + + /* ITS#5326: use parent's DN if differs from provided one */ + dnParent( &op->ora_e->e_name, &ppdn ); + if ( !dn_match( &p->e_name, &ppdn ) ) { + struct berval rdn; + struct berval newdn; + + dnRdn( &op->ora_e->e_name, &rdn ); + + build_new_dn( &newdn, &p->e_name, &rdn, NULL ); + if ( op->ora_e->e_name.bv_val != op->o_req_dn.bv_val ) + ber_memfree( op->ora_e->e_name.bv_val ); + op->ora_e->e_name = newdn; + + /* FIXME: should check whether + * dnNormalize(newdn) == e->e_nname ... */ + } + } + + bdb_unlocked_cache_return_entry_r( bdb, p ); + } + p = NULL; + + rs->sr_err = access_allowed( op, op->ora_e, + entry, NULL, ACL_WADD, NULL ); + + if ( ! rs->sr_err ) { + switch( opinfo.boi_err ) { + case DB_LOCK_DEADLOCK: + case DB_LOCK_NOTGRANTED: + goto retry; + } + + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_add) ": no write access to entry\n", + 0, 0, 0 ); + rs->sr_err = LDAP_INSUFFICIENT_ACCESS; + rs->sr_text = "no write access to entry"; + goto return_results;; + } + + /* + * Check ACL for attribute write access + */ + if (!acl_check_modlist(op, oe, op->ora_modlist)) { + switch( opinfo.boi_err ) { + case DB_LOCK_DEADLOCK: + case DB_LOCK_NOTGRANTED: + goto retry; + } + + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_add) ": no write access to attribute\n", + 0, 0, 0 ); + rs->sr_err = LDAP_INSUFFICIENT_ACCESS; + rs->sr_text = "no write access to attribute"; + goto return_results;; + } + + if ( eid == NOID ) { + rs->sr_err = bdb_next_id( op->o_bd, &eid ); + if( rs->sr_err != 0 ) { + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_add) ": next_id failed (%d)\n", + rs->sr_err, 0, 0 ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + goto return_results; + } + op->ora_e->e_id = eid; + } + + /* 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_add) ": 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; + } + Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(bdb_add) ": txn2 id: %x\n", + lt2->id(lt2), 0, 0 ); + + /* dn2id index */ + rs->sr_err = bdb_dn2id_add( op, lt2, ei, op->ora_e ); + if ( rs->sr_err != 0 ) { + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_add) ": dn2id_add failed: %s (%d)\n", + db_strerror(rs->sr_err), rs->sr_err, 0 ); + + switch( rs->sr_err ) { + case DB_LOCK_DEADLOCK: + case DB_LOCK_NOTGRANTED: + goto retry; + case DB_KEYEXIST: + rs->sr_err = LDAP_ALREADY_EXISTS; + break; + default: + rs->sr_err = LDAP_OTHER; + } + goto return_results; + } + + /* attribute indexes */ + rs->sr_err = bdb_index_entry_add( op, lt2, op->ora_e ); + if ( rs->sr_err != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_add) ": index_entry_add failed\n", + 0, 0, 0 ); + switch( rs->sr_err ) { + case DB_LOCK_DEADLOCK: + case DB_LOCK_NOTGRANTED: + goto retry; + default: + rs->sr_err = LDAP_OTHER; + } + rs->sr_text = "index generation failed"; + goto return_results; + } + + /* id2entry index */ + rs->sr_err = bdb_id2entry_add( op->o_bd, lt2, op->ora_e ); + if ( rs->sr_err != 0 ) { + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_add) ": id2entry_add failed\n", + 0, 0, 0 ); + switch( rs->sr_err ) { + case DB_LOCK_DEADLOCK: + case DB_LOCK_NOTGRANTED: + goto retry; + default: + rs->sr_err = LDAP_OTHER; + } + rs->sr_text = "entry store 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; + } + + /* post-read */ + if( op->o_postread ) { + if( postread_ctrl == NULL ) { + postread_ctrl = &ctrls[num_ctrls++]; + ctrls[num_ctrls] = NULL; + } + if ( slap_read_controls( op, rs, op->ora_e, + &slap_post_read_bv, postread_ctrl ) ) + { + Debug( LDAP_DEBUG_TRACE, + "<=- " LDAP_XSTRING(bdb_add) ": post-read " + "failed!\n", 0, 0, 0 ); + if ( op->o_postread & SLAP_CONTROL_CRITICAL ) { + /* FIXME: is it correct to abort + * operation if control fails? */ + 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 { + struct berval nrdn; + + /* pick the RDN if not suffix; otherwise pick the entire DN */ + if (pdn.bv_len) { + nrdn.bv_val = op->ora_e->e_nname.bv_val; + nrdn.bv_len = pdn.bv_val - op->ora_e->e_nname.bv_val - 1; + } else { + nrdn = op->ora_e->e_nname; + } + + bdb_cache_add( bdb, ei, op->ora_e, &nrdn, ltid, &lock ); + + if(( rs->sr_err=TXN_COMMIT( ltid, 0 )) != 0 ) { + rs->sr_text = "txn_commit failed"; + } else { + rs->sr_err = LDAP_SUCCESS; + } + } + + ltid = NULL; + LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next ); + opinfo.boi_oe.oe_key = NULL; + + if ( rs->sr_err != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_add) ": %s : %s (%d)\n", + rs->sr_text, db_strerror(rs->sr_err), rs->sr_err ); + rs->sr_err = LDAP_OTHER; + goto return_results; + } + + Debug(LDAP_DEBUG_TRACE, + LDAP_XSTRING(bdb_add) ": added%s id=%08lx dn=\"%s\"\n", + op->o_noop ? " (no-op)" : "", + op->ora_e->e_id, op->ora_e->e_dn ); + + rs->sr_text = NULL; + if( num_ctrls ) rs->sr_ctrls = ctrls; + +return_results: + success = rs->sr_err; + send_ldap_result( op, rs ); + + if( ltid != NULL ) { + TXN_ABORT( ltid ); + } + if ( opinfo.boi_oe.oe_key ) { + LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.boi_oe, OpExtra, oe_next ); + } + + if( success == LDAP_SUCCESS ) { + /* We own the entry now, and it can be purged at will + * Check to make sure it's the same entry we entered with. + * Possibly a callback may have mucked with it, although + * in general callbacks should treat the entry as read-only. + */ + bdb_cache_deref( oe->e_private ); + if ( op->ora_e == oe ) + op->ora_e = NULL; + + if ( bdb->bi_txn_cp_kbyte ) { + TXN_CHECKPOINT( bdb->bi_dbenv, + bdb->bi_txn_cp_kbyte, bdb->bi_txn_cp_min, 0 ); + } + } + + slap_graduate_commit_csn( op ); + + 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; +} |