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https://git.openldap.org/openldap/openldap.git
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380 lines
8.8 KiB
C
380 lines
8.8 KiB
C
/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 1999-2006 The OpenLDAP Foundation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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*/
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/*
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* LDAPv3 Extended Operation Request
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* ExtendedRequest ::= [APPLICATION 23] SEQUENCE {
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* requestName [0] LDAPOID,
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* requestValue [1] OCTET STRING OPTIONAL
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* }
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*
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* LDAPv3 Extended Operation Response
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* ExtendedResponse ::= [APPLICATION 24] SEQUENCE {
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* COMPONENTS OF LDAPResult,
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* responseName [10] LDAPOID OPTIONAL,
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* response [11] OCTET STRING OPTIONAL
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* }
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*
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/socket.h>
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#include <ac/string.h>
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#include "slap.h"
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#include "lber_pvt.h"
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#define UNSUPPORTED_EXOP "unsupported extended operation"
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static struct extop_list {
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struct extop_list *next;
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struct berval oid;
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slap_mask_t flags;
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SLAP_EXTOP_MAIN_FN *ext_main;
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} *supp_ext_list = NULL;
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static SLAP_EXTOP_MAIN_FN whoami_extop;
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/* This list of built-in extops is for extops that are not part
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* of backends or in external modules. Essentially, this is
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* just a way to get built-in extops onto the extop list without
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* having a separate init routine for each built-in extop.
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*/
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const struct berval slap_EXOP_CANCEL = BER_BVC(LDAP_EXOP_X_CANCEL);
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const struct berval slap_EXOP_WHOAMI = BER_BVC(LDAP_EXOP_X_WHO_AM_I);
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const struct berval slap_EXOP_MODIFY_PASSWD = BER_BVC(LDAP_EXOP_MODIFY_PASSWD);
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const struct berval slap_EXOP_START_TLS = BER_BVC(LDAP_EXOP_START_TLS);
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static struct {
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const struct berval *oid;
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slap_mask_t flags;
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SLAP_EXTOP_MAIN_FN *ext_main;
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} builtin_extops[] = {
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{ &slap_EXOP_CANCEL, SLAP_EXOP_HIDE, cancel_extop },
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{ &slap_EXOP_WHOAMI, 0, whoami_extop },
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{ &slap_EXOP_MODIFY_PASSWD, SLAP_EXOP_WRITES, passwd_extop },
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{ NULL, 0, NULL }
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};
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static struct extop_list *find_extop(
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struct extop_list *list, struct berval *oid );
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struct berval *
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get_supported_extop (int index)
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{
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struct extop_list *ext;
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/* linear scan is slow, but this way doesn't force a
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* big change on root_dse.c, where this routine is used.
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*/
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for (ext = supp_ext_list; ext != NULL && --index >= 0; ext = ext->next) {
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; /* empty */
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}
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if (ext == NULL) return NULL;
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return &ext->oid;
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}
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int exop_root_dse_info( Entry *e )
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{
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AttributeDescription *ad_supportedExtension
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= slap_schema.si_ad_supportedExtension;
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struct berval vals[2];
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struct extop_list *ext;
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vals[1].bv_val = NULL;
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vals[1].bv_len = 0;
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for (ext = supp_ext_list; ext != NULL; ext = ext->next) {
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if( ext->flags & SLAP_EXOP_HIDE ) continue;
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vals[0] = ext->oid;
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if( attr_merge( e, ad_supportedExtension, vals, NULL ) ) {
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return LDAP_OTHER;
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}
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}
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return LDAP_SUCCESS;
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}
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int
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do_extended(
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Operation *op,
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SlapReply *rs
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)
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{
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struct berval reqdata = {0, NULL};
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ber_tag_t tag;
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ber_len_t len;
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Debug( LDAP_DEBUG_TRACE, "do_extended\n", 0, 0, 0 );
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if( op->o_protocol < LDAP_VERSION3 ) {
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Debug( LDAP_DEBUG_ANY,
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"do_extended: protocol version (%d) too low\n",
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op->o_protocol, 0 ,0 );
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send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "requires LDAPv3" );
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rs->sr_err = SLAPD_DISCONNECT;
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goto done;
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}
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if ( ber_scanf( op->o_ber, "{m" /*}*/, &op->ore_reqoid ) == LBER_ERROR ) {
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Debug( LDAP_DEBUG_ANY, "do_extended: ber_scanf failed\n", 0, 0 ,0 );
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send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
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rs->sr_err = SLAPD_DISCONNECT;
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goto done;
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}
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tag = ber_peek_tag( op->o_ber, &len );
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if( ber_peek_tag( op->o_ber, &len ) == LDAP_TAG_EXOP_REQ_VALUE ) {
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if( ber_scanf( op->o_ber, "m", &reqdata ) == LBER_ERROR ) {
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Debug( LDAP_DEBUG_ANY, "do_extended: ber_scanf failed\n", 0, 0 ,0 );
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send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
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rs->sr_err = SLAPD_DISCONNECT;
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goto done;
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}
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}
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if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
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Debug( LDAP_DEBUG_ANY, "do_extended: get_ctrls failed\n", 0, 0 ,0 );
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return rs->sr_err;
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}
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/* check for controls inappropriate for all extended operations */
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if( get_manageDSAit( op ) == SLAP_CONTROL_CRITICAL ) {
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Statslog( LDAP_DEBUG_STATS, "%s EXT oid=%s\n",
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op->o_log_prefix, op->ore_reqoid.bv_val, 0, 0, 0 );
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send_ldap_error( op, rs,
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LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
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"manageDSAit control inappropriate" );
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goto done;
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}
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/* FIXME: temporary? */
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if ( reqdata.bv_val ) {
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op->ore_reqdata = &reqdata;
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}
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op->o_bd = frontendDB;
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rs->sr_err = frontendDB->be_extended( op, rs );
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done:
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return rs->sr_err;
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}
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int
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fe_extended( Operation *op, SlapReply *rs )
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{
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struct extop_list *ext = NULL;
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struct berval reqdata = BER_BVNULL;
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if (op->ore_reqdata) {
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reqdata = *op->ore_reqdata;
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}
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ext = find_extop(supp_ext_list, &op->ore_reqoid );
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if ( ext == NULL ) {
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Statslog( LDAP_DEBUG_STATS, "%s EXT oid=%s\n",
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op->o_log_prefix, op->ore_reqoid.bv_val, 0, 0, 0 );
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Debug( LDAP_DEBUG_ANY, "do_extended: unsupported operation \"%s\"\n",
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op->ore_reqoid.bv_val, 0 ,0 );
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send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR,
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"unsupported extended operation" );
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goto done;
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}
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op->ore_flags = ext->flags;
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Debug( LDAP_DEBUG_ARGS, "do_extended: oid=%s\n",
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op->ore_reqoid.bv_val, 0 ,0 );
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{ /* start of OpenLDAP extended operation */
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BackendDB *bd = op->o_bd;
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rs->sr_err = (ext->ext_main)( op, rs );
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if( rs->sr_err != SLAPD_ABANDON ) {
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if ( rs->sr_err == LDAP_REFERRAL && rs->sr_ref == NULL ) {
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rs->sr_ref = referral_rewrite( default_referral,
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NULL, NULL, LDAP_SCOPE_DEFAULT );
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if ( !rs->sr_ref ) rs->sr_ref = default_referral;
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if ( !rs->sr_ref ) {
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rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
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rs->sr_text = "referral missing";
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}
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}
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if ( op->o_bd == NULL )
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op->o_bd = bd;
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send_ldap_extended( op, rs );
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if ( rs->sr_ref != default_referral ) {
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ber_bvarray_free( rs->sr_ref );
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rs->sr_ref = NULL;
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}
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}
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if ( rs->sr_rspoid != NULL ) {
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free( (char *)rs->sr_rspoid );
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}
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if ( rs->sr_rspdata != NULL ) {
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ber_bvfree( rs->sr_rspdata );
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}
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} /* end of OpenLDAP extended operation */
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done:;
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return rs->sr_err;
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}
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int
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load_extop(
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const struct berval *ext_oid,
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slap_mask_t ext_flags,
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SLAP_EXTOP_MAIN_FN *ext_main )
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{
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struct berval oidm = BER_BVNULL;
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struct extop_list *ext;
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if ( !ext_main ) {
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return -1;
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}
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if ( ext_oid == NULL || BER_BVISNULL( ext_oid ) || BER_BVISEMPTY( ext_oid ) ) {
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return -1;
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}
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if ( numericoidValidate( NULL, (struct berval *)ext_oid ) != LDAP_SUCCESS ) {
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oidm.bv_val = oidm_find( ext_oid->bv_val );
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if ( ext_oid == NULL ) {
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return -1;
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}
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oidm.bv_len = strlen( oidm.bv_val );
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ext_oid = &oidm;
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}
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for ( ext = supp_ext_list; ext; ext = ext->next ) {
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if ( bvmatch( ext_oid, &ext->oid ) ) {
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return -1;
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}
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}
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ext = ch_calloc(1, sizeof(struct extop_list) + ext_oid->bv_len + 1);
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if (ext == NULL)
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return(-1);
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ext->flags = ext_flags;
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ext->oid.bv_val = (char *)(ext + 1);
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AC_MEMCPY( ext->oid.bv_val, ext_oid->bv_val, ext_oid->bv_len );
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ext->oid.bv_len = ext_oid->bv_len;
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ext->oid.bv_val[ext->oid.bv_len] = '\0';
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ext->ext_main = ext_main;
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ext->next = supp_ext_list;
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supp_ext_list = ext;
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return(0);
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}
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int
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extops_init (void)
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{
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int i;
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for (i = 0; builtin_extops[i].oid != NULL; i++) {
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load_extop((struct berval *)builtin_extops[i].oid,
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builtin_extops[i].flags,
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builtin_extops[i].ext_main);
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}
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return(0);
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}
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int
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extops_kill (void)
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{
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struct extop_list *ext;
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/* we allocated the memory, so we have to free it, too. */
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while ((ext = supp_ext_list) != NULL) {
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supp_ext_list = ext->next;
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ch_free(ext);
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}
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return(0);
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}
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static struct extop_list *
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find_extop( struct extop_list *list, struct berval *oid )
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{
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struct extop_list *ext;
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for (ext = list; ext; ext = ext->next) {
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if (bvmatch(&ext->oid, oid))
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return(ext);
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}
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return(NULL);
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}
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static int
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whoami_extop (
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Operation *op,
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SlapReply *rs )
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{
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struct berval *bv;
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if ( op->ore_reqdata != NULL ) {
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/* no request data should be provided */
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rs->sr_text = "no request data expected";
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return LDAP_PROTOCOL_ERROR;
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}
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Statslog( LDAP_DEBUG_STATS, "%s WHOAMI\n",
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op->o_log_prefix, 0, 0, 0, 0 );
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op->o_bd = op->o_conn->c_authz_backend;
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if( backend_check_restrictions( op, rs,
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(struct berval *)&slap_EXOP_WHOAMI ) != LDAP_SUCCESS ) {
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return rs->sr_err;
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}
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bv = (struct berval *) ch_malloc( sizeof(struct berval) );
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if( op->o_dn.bv_len ) {
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bv->bv_len = op->o_dn.bv_len + STRLENOF( "dn:" );
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bv->bv_val = ch_malloc( bv->bv_len + 1 );
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AC_MEMCPY( bv->bv_val, "dn:", STRLENOF( "dn:" ) );
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AC_MEMCPY( &bv->bv_val[STRLENOF( "dn:" )], op->o_dn.bv_val,
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op->o_dn.bv_len );
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bv->bv_val[bv->bv_len] = '\0';
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} else {
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bv->bv_len = 0;
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bv->bv_val = NULL;
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}
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rs->sr_rspdata = bv;
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return LDAP_SUCCESS;
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}
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