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Diffstat (limited to '')
| -rw-r--r-- | servers/slapd/add.c | 693 |
1 files changed, 693 insertions, 0 deletions
diff --git a/servers/slapd/add.c b/servers/slapd/add.c new file mode 100644 index 0000000..7934d3e --- /dev/null +++ b/servers/slapd/add.c @@ -0,0 +1,693 @@ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 1998-2022 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>. + */ +/* 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 <stdio.h> +#include <ac/string.h> +#include <ac/time.h> +#include <ac/socket.h> + +#include "lutil.h" +#include "slap.h" + +int +do_add( Operation *op, SlapReply *rs ) +{ + BerElement *ber = op->o_ber; + char *last; + struct berval dn = BER_BVNULL; + ber_len_t len; + ber_tag_t tag; + Modifications *modlist = NULL; + Modifications **modtail = &modlist; + Modifications tmp; + char textbuf[ SLAP_TEXT_BUFLEN ]; + size_t textlen = sizeof( textbuf ); + int rc = 0; + int freevals = 1; + OpExtraDB *oex; + + Debug( LDAP_DEBUG_TRACE, "%s do_add\n", + op->o_log_prefix ); + + /* + * Parse the add request. It looks like this: + * + * AddRequest := [APPLICATION 14] SEQUENCE { + * name DistinguishedName, + * attrs SEQUENCE OF SEQUENCE { + * type AttributeType, + * values SET OF AttributeValue + * } + * } + */ + + /* get the name */ + if ( ber_scanf( ber, "{m", /*}*/ &dn ) == LBER_ERROR ) { + Debug( LDAP_DEBUG_ANY, "%s do_add: ber_scanf failed\n", + op->o_log_prefix ); + send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" ); + return SLAPD_DISCONNECT; + } + + Debug( LDAP_DEBUG_ARGS, "%s do_add: dn (%s)\n", + op->o_log_prefix, dn.bv_val ); + + /* get the attrs */ + for ( tag = ber_first_element( ber, &len, &last ); tag != LBER_DEFAULT; + tag = ber_next_element( ber, &len, last ) ) + { + Modifications *mod; + ber_tag_t rtag; + + tmp.sml_nvalues = NULL; + + rtag = ber_scanf( ber, "{m{W}}", &tmp.sml_type, &tmp.sml_values ); + + if ( rtag == LBER_ERROR ) { + Debug( LDAP_DEBUG_ANY, "%s do_add: decoding error\n", + op->o_log_prefix ); + send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" ); + rs->sr_err = SLAPD_DISCONNECT; + goto done; + } + + if ( tmp.sml_values == NULL ) { + Debug( LDAP_DEBUG_ANY, "%s do_add: no values for type %s\n", + op->o_log_prefix, tmp.sml_type.bv_val ); + send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, + "no values for attribute type" ); + goto done; + } + + mod = (Modifications *) ch_malloc( sizeof(Modifications) ); + mod->sml_op = LDAP_MOD_ADD; + mod->sml_flags = 0; + mod->sml_next = NULL; + mod->sml_desc = NULL; + mod->sml_type = tmp.sml_type; + mod->sml_values = tmp.sml_values; + mod->sml_nvalues = NULL; + + *modtail = mod; + modtail = &mod->sml_next; + } + + if ( ber_scanf( ber, /*{*/ "}") == LBER_ERROR ) { + Debug( LDAP_DEBUG_ANY, "%s do_add: ber_scanf failed\n", + op->o_log_prefix ); + send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" ); + rs->sr_err = SLAPD_DISCONNECT; + goto done; + } + + if ( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, "%s do_add: get_ctrls failed\n", + op->o_log_prefix ); + goto done; + } + + rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn, + op->o_tmpmemctx ); + + if ( rs->sr_err != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, "%s do_add: invalid dn (%s)\n", + op->o_log_prefix, dn.bv_val ); + send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" ); + goto done; + } + + op->ora_e = entry_alloc(); + ber_dupbv( &op->ora_e->e_name, &op->o_req_dn ); + ber_dupbv( &op->ora_e->e_nname, &op->o_req_ndn ); + + Debug( LDAP_DEBUG_STATS, "%s ADD dn=\"%s\"\n", + op->o_log_prefix, op->o_req_dn.bv_val ); + + if ( modlist == NULL ) { + send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR, + "no attributes provided" ); + goto done; + } + + if ( dn_match( &op->ora_e->e_nname, &slap_empty_bv ) ) { + /* protocolError may be a more appropriate error */ + send_ldap_error( op, rs, LDAP_ALREADY_EXISTS, + "root DSE already exists" ); + goto done; + + } else if ( dn_match( &op->ora_e->e_nname, &frontendDB->be_schemandn ) ) { + send_ldap_error( op, rs, LDAP_ALREADY_EXISTS, + "subschema subentry already exists" ); + goto done; + } + + rs->sr_err = slap_mods_check( op, modlist, &rs->sr_text, + textbuf, textlen, NULL ); + + if ( rs->sr_err != LDAP_SUCCESS ) { + send_ldap_result( op, rs ); + goto done; + } + + /* temporary; remove if not invoking backend function */ + op->ora_modlist = modlist; + + /* call this so global overlays/SLAPI have access to ora_e */ + rs->sr_err = slap_mods2entry( op->ora_modlist, &op->ora_e, + 1, 0, &rs->sr_text, textbuf, textlen ); + if ( rs->sr_err != LDAP_SUCCESS ) { + send_ldap_result( op, rs ); + goto done; + } + + freevals = 0; + oex = op->o_tmpalloc( sizeof(OpExtraDB), op->o_tmpmemctx ); + oex->oe.oe_key = (void *)do_add; + oex->oe_db = NULL; + LDAP_SLIST_INSERT_HEAD(&op->o_extra, &oex->oe, oe_next); + + op->o_bd = frontendDB; + rc = frontendDB->be_add( op, rs ); + + if ( rc == SLAPD_ASYNCOP ) { + /* skip cleanup */ + return rc; + } + + if ( rc == LDAP_TXN_SPECIFY_OKAY ) { + /* skip cleanup */ + return rc; + } else if ( rc == 0 ) { + if ( op->ora_e != NULL && oex->oe_db != NULL ) { + BackendDB *bd = op->o_bd; + + op->o_bd = oex->oe_db; + + be_entry_release_w( op, op->ora_e ); + + op->ora_e = NULL; + op->o_bd = bd; + } + } + LDAP_SLIST_REMOVE(&op->o_extra, &oex->oe, OpExtra, oe_next); + op->o_tmpfree( oex, op->o_tmpmemctx ); + +done:; + if ( modlist != NULL ) { + /* in case of error, free the values as well */ + slap_mods_free( modlist, freevals ); + } + + if ( op->ora_e != NULL ) { + entry_free( op->ora_e ); + } + op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx ); + op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx ); + + return rc; +} + +int +fe_op_add( Operation *op, SlapReply *rs ) +{ + Modifications **modtail = &op->ora_modlist; + int rc = 0; + BackendDB *op_be, *bd = op->o_bd; + char textbuf[ SLAP_TEXT_BUFLEN ]; + size_t textlen = sizeof( textbuf ); + + /* + * 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->ora_e->e_nname, 1 ); + if ( op->o_bd == NULL ) { + op->o_bd = bd; + rs->sr_ref = referral_rewrite( default_referral, + NULL, &op->ora_e->e_name, LDAP_SCOPE_DEFAULT ); + if ( !rs->sr_ref ) rs->sr_ref = default_referral; + if ( rs->sr_ref ) { + rs->sr_err = LDAP_REFERRAL; + send_ldap_result( op, rs ); + + if ( rs->sr_ref != default_referral ) { + ber_bvarray_free( rs->sr_ref ); + } + } else { + send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM, + "no global superior knowledge" ); + } + goto done; + } + + /* If we've got a glued backend, check the real backend */ + op_be = op->o_bd; + if ( SLAP_GLUE_INSTANCE( op->o_bd )) { + op->o_bd = select_backend( &op->ora_e->e_nname, 0 ); + } + + /* check restrictions */ + if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) { + send_ldap_result( op, rs ); + goto done; + } + + /* check for referrals */ + if( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) { + goto done; + } + + rs->sr_err = slap_mods_obsolete_check( op, op->ora_modlist, + &rs->sr_text, textbuf, textlen ); + + if ( rs->sr_err != LDAP_SUCCESS ) { + send_ldap_result( op, rs ); + goto done; + } + + /* + * do the add if 1 && (2 || 3) + * 1) there is an add function implemented in this backend; + * 2) this backend is the provider for what it holds; + * 3) it's a replica and the dn supplied is the updatedn. + */ + if ( op->o_bd->be_add ) { + /* do the update here */ + int repl_user = be_isupdate( op ); + if ( !SLAP_SINGLE_SHADOW(op->o_bd) || repl_user ) { + int update = !BER_BVISEMPTY( &op->o_bd->be_update_ndn ); + + if ( !update ) { + rs->sr_err = slap_mods_no_user_mod_check( op, op->ora_modlist, + &rs->sr_text, textbuf, textlen ); + + if ( rs->sr_err != LDAP_SUCCESS ) { + send_ldap_result( op, rs ); + goto done; + } + } + + if ( !repl_user ) { + /* go to the last mod */ + for ( modtail = &op->ora_modlist; + *modtail != NULL; + modtail = &(*modtail)->sml_next ) + { + assert( (*modtail)->sml_op == LDAP_MOD_ADD ); + assert( (*modtail)->sml_desc != NULL ); + } + + + /* check for unmodifiable attributes */ + rs->sr_err = slap_mods_no_repl_user_mod_check( op, + op->ora_modlist, &rs->sr_text, textbuf, textlen ); + if ( rs->sr_err != LDAP_SUCCESS ) { + send_ldap_result( op, rs ); + goto done; + } + } + + if ( op->o_txnSpec ) { + rc = txn_preop( op, rs ); + goto done; + } + + op->o_bd = op_be; + rc = op->o_bd->be_add( op, rs ); + if ( rc == LDAP_SUCCESS ) { + OpExtra *oex; + /* NOTE: be_entry_release_w() is + * called by do_add(), so that global + * overlays on the way back can + * at least read the entry */ + LDAP_SLIST_FOREACH(oex, &op->o_extra, oe_next) { + if ( oex->oe_key == (void *)do_add ) { + ((OpExtraDB *)oex)->oe_db = op->o_bd; + break; + } + } + } + + } else { + BerVarray defref = NULL; + + 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->ora_e->e_name, LDAP_SCOPE_DEFAULT ); + if ( rs->sr_ref == NULL ) rs->sr_ref = defref; + rs->sr_err = LDAP_REFERRAL; + if (!rs->sr_ref) rs->sr_ref = default_referral; + send_ldap_result( op, rs ); + + if ( rs->sr_ref != default_referral ) { + ber_bvarray_free( rs->sr_ref ); + } + } else { + send_ldap_error( op, rs, + LDAP_UNWILLING_TO_PERFORM, + "shadow context; no update referral" ); + } + } + } else { + Debug( LDAP_DEBUG_ARGS, "do_add: no backend support\n" ); + send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM, + "operation not supported within namingContext" ); + } + +done:; + op->o_bd = bd; + return rc; +} + +int +slap_mods2entry( + Modifications *mods, + Entry **e, + int initial, + int dup, + const char **text, + char *textbuf, size_t textlen ) +{ + Attribute **tail; + int i; + + if ( initial ) { + assert( (*e)->e_attrs == NULL ); + } + + for ( tail = &(*e)->e_attrs; *tail != NULL; tail = &(*tail)->a_next ) + ; + + *text = textbuf; + + for( ; mods != NULL; mods = mods->sml_next ) { + Attribute *attr; + + assert( mods->sml_desc != NULL ); + + attr = attr_find( (*e)->e_attrs, mods->sml_desc ); + + if( attr != NULL ) { +#define SLURPD_FRIENDLY +#ifdef SLURPD_FRIENDLY + int j; + + if ( !initial ) { + /* + * This check allows overlays to override operational + * attributes by setting them directly in the entry. + * We assume slap_mods_no_user_mod_check() was called + * with the user modifications. + */ + *text = NULL; + return LDAP_SUCCESS; + } + + i = attr->a_numvals; + j = mods->sml_numvals; + attr->a_numvals += j; + j++; /* NULL */ + + attr->a_vals = ch_realloc( attr->a_vals, + sizeof( struct berval ) * (i+j) ); + + /* checked for duplicates in slap_mods_check */ + + if ( dup ) { + for ( j = 0; mods->sml_values[j].bv_val; j++ ) { + ber_dupbv( &attr->a_vals[i+j], &mods->sml_values[j] ); + } + BER_BVZERO( &attr->a_vals[i+j] ); + j++; + } else { + AC_MEMCPY( &attr->a_vals[i], mods->sml_values, + sizeof( struct berval ) * j ); + } + + if( mods->sml_nvalues ) { + attr->a_nvals = ch_realloc( attr->a_nvals, + sizeof( struct berval ) * (i+j) ); + if ( dup ) { + for ( j = 0; mods->sml_nvalues[j].bv_val; j++ ) { + ber_dupbv( &attr->a_nvals[i+j], &mods->sml_nvalues[j] ); + } + BER_BVZERO( &attr->a_nvals[i+j] ); + } else { + AC_MEMCPY( &attr->a_nvals[i], mods->sml_nvalues, + sizeof( struct berval ) * j ); + } + } else { + attr->a_nvals = attr->a_vals; + } + + continue; +#else + snprintf( textbuf, textlen, + "attribute '%s' provided more than once", + mods->sml_desc->ad_cname.bv_val ); + *text = textbuf; + return LDAP_TYPE_OR_VALUE_EXISTS; +#endif + } + + attr = attr_alloc( mods->sml_desc ); + + /* move values to attr structure */ + i = mods->sml_numvals; + attr->a_numvals = mods->sml_numvals; + if ( dup ) { + attr->a_vals = (BerVarray) ch_calloc( i+1, sizeof( BerValue )); + for ( i = 0; mods->sml_values[i].bv_val; i++ ) { + ber_dupbv( &attr->a_vals[i], &mods->sml_values[i] ); + } + BER_BVZERO( &attr->a_vals[i] ); + } else { + attr->a_vals = mods->sml_values; + } + + if ( mods->sml_nvalues ) { + if ( dup ) { + i = mods->sml_numvals; + attr->a_nvals = (BerVarray) ch_calloc( i+1, sizeof( BerValue )); + for ( i = 0; mods->sml_nvalues[i].bv_val; i++ ) { + ber_dupbv( &attr->a_nvals[i], &mods->sml_nvalues[i] ); + } + BER_BVZERO( &attr->a_nvals[i] ); + } else { + attr->a_nvals = mods->sml_nvalues; + } + } else { + attr->a_nvals = attr->a_vals; + } + + *tail = attr; + tail = &attr->a_next; + } + + *text = NULL; + + return LDAP_SUCCESS; +} + +int +slap_entry2mods( + Entry *e, + Modifications **mods, + const char **text, + char *textbuf, size_t textlen ) +{ + Modifications *modhead = NULL; + Modifications *mod; + Modifications **modtail = &modhead; + Attribute *a_new; + AttributeDescription *a_new_desc; + int i, count; + + a_new = e->e_attrs; + + while ( a_new != NULL ) { + a_new_desc = a_new->a_desc; + mod = (Modifications *) ch_malloc( sizeof( Modifications )); + + mod->sml_op = LDAP_MOD_REPLACE; + mod->sml_flags = 0; + + mod->sml_type = a_new_desc->ad_cname; + + count = a_new->a_numvals; + mod->sml_numvals = a_new->a_numvals; + + mod->sml_values = (struct berval*) ch_malloc( + (count+1) * sizeof( struct berval) ); + + /* see slap_mods_check() comments... + * if a_vals == a_nvals, there is no normalizer. + * in this case, mod->sml_nvalues must be left NULL. + */ + if ( a_new->a_vals != a_new->a_nvals ) { + mod->sml_nvalues = (struct berval*) ch_malloc( + (count+1) * sizeof( struct berval) ); + } else { + mod->sml_nvalues = NULL; + } + + for ( i = 0; i < count; i++ ) { + ber_dupbv(mod->sml_values+i, a_new->a_vals+i); + if ( mod->sml_nvalues ) { + ber_dupbv( mod->sml_nvalues+i, a_new->a_nvals+i ); + } + } + + mod->sml_values[count].bv_val = NULL; + mod->sml_values[count].bv_len = 0; + + if ( mod->sml_nvalues ) { + mod->sml_nvalues[count].bv_val = NULL; + mod->sml_nvalues[count].bv_len = 0; + } + + mod->sml_desc = a_new_desc; + mod->sml_next =NULL; + *modtail = mod; + modtail = &mod->sml_next; + a_new = a_new->a_next; + } + + *mods = modhead; + + return LDAP_SUCCESS; +} + +int slap_add_opattrs( + Operation *op, + const char **text, + char *textbuf, + size_t textlen, + int manage_ctxcsn ) +{ + struct berval name, timestamp, csn = BER_BVNULL; + struct berval nname, tmp; + char timebuf[ LDAP_LUTIL_GENTIME_BUFSIZE ]; + char csnbuf[ LDAP_PVT_CSNSTR_BUFSIZE ]; + Attribute *a; + + if ( SLAP_LASTMOD( op->o_bd ) ) { + char *ptr; + int gotcsn = 0; + + timestamp.bv_val = timebuf; + a = attr_find( op->ora_e->e_attrs, slap_schema.si_ad_entryCSN ); + if ( a ) { + gotcsn = 1; + csn = a->a_vals[0]; + } + if ( BER_BVISEMPTY( &op->o_csn )) { + if ( !gotcsn ) { + csn.bv_val = csnbuf; + csn.bv_len = sizeof(csnbuf); + slap_get_csn( op, &csn, manage_ctxcsn ); + } else { + if ( manage_ctxcsn ) + slap_queue_csn( op, &csn ); + } + } else { + csn = op->o_csn; + } + ptr = ber_bvchr( &csn, '#' ); + if ( ptr ) { + timestamp.bv_len = STRLENOF("YYYYMMDDHHMMSSZ"); + AC_MEMCPY( timebuf, csn.bv_val, timestamp.bv_len ); + timebuf[timestamp.bv_len-1] = 'Z'; + timebuf[timestamp.bv_len] = '\0'; + } else { + time_t now = slap_get_time(); + + timestamp.bv_len = sizeof(timebuf); + + slap_timestamp( &now, ×tamp ); + } + + if ( BER_BVISEMPTY( &op->o_dn ) ) { + BER_BVSTR( &name, SLAPD_ANONYMOUS ); + nname = name; + } else { + name = op->o_dn; + nname = op->o_ndn; + } + + a = attr_find( op->ora_e->e_attrs, + slap_schema.si_ad_entryUUID ); + if ( !a ) { + char uuidbuf[ LDAP_LUTIL_UUIDSTR_BUFSIZE ]; + + tmp.bv_len = lutil_uuidstr( uuidbuf, sizeof( uuidbuf ) ); + tmp.bv_val = uuidbuf; + + attr_merge_normalize_one( op->ora_e, + slap_schema.si_ad_entryUUID, &tmp, op->o_tmpmemctx ); + } + + a = attr_find( op->ora_e->e_attrs, + slap_schema.si_ad_creatorsName ); + if ( !a ) { + attr_merge_one( op->ora_e, + slap_schema.si_ad_creatorsName, &name, &nname ); + } + + a = attr_find( op->ora_e->e_attrs, + slap_schema.si_ad_createTimestamp ); + if ( !a ) { + attr_merge_one( op->ora_e, + slap_schema.si_ad_createTimestamp, ×tamp, NULL ); + } + + if ( !gotcsn ) { + attr_merge_one( op->ora_e, + slap_schema.si_ad_entryCSN, &csn, NULL ); + } + + a = attr_find( op->ora_e->e_attrs, + slap_schema.si_ad_modifiersName ); + if ( !a ) { + attr_merge_one( op->ora_e, + slap_schema.si_ad_modifiersName, &name, &nname ); + } + + a = attr_find( op->ora_e->e_attrs, + slap_schema.si_ad_modifyTimestamp ); + if ( !a ) { + attr_merge_one( op->ora_e, + slap_schema.si_ad_modifyTimestamp, ×tamp, NULL ); + } + } + + return LDAP_SUCCESS; +} |