openldap/servers/slapd/extended.c
2003-12-29 22:25:43 +00:00

449 lines
11 KiB
C

/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 1999-2003 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>.
*/
/*
* LDAPv3 Extended Operation Request
* ExtendedRequest ::= [APPLICATION 23] SEQUENCE {
* requestName [0] LDAPOID,
* requestValue [1] OCTET STRING OPTIONAL
* }
*
* LDAPv3 Extended Operation Response
* ExtendedResponse ::= [APPLICATION 24] SEQUENCE {
* COMPONENTS OF LDAPResult,
* responseName [10] LDAPOID OPTIONAL,
* response [11] OCTET STRING OPTIONAL
* }
*
*/
#include "portable.h"
#include <stdio.h>
#include <ac/socket.h>
#include <ac/string.h>
#include "slap.h"
#include "lber_pvt.h"
#ifdef LDAP_SLAPI
#include "slapi/slapi.h"
#endif
#define UNSUPPORTED_EXTENDEDOP "unsupported extended operation"
#ifdef LDAP_DEVEL
#define SLAP_EXOP_HIDE 0x0000
#else
#define SLAP_EXOP_HIDE 0x8000
#endif
static struct extop_list {
struct extop_list *next;
struct berval oid;
slap_mask_t flags;
SLAP_EXTOP_MAIN_FN *ext_main;
} *supp_ext_list = NULL;
static SLAP_EXTOP_MAIN_FN whoami_extop;
/* this list of built-in extops is for extops that are not part
* of backends or in external modules. essentially, this is
* just a way to get built-in extops onto the extop list without
* having a separate init routine for each built-in extop.
*/
const struct berval slap_EXOP_CANCEL = BER_BVC(LDAP_EXOP_X_CANCEL);
const struct berval slap_EXOP_WHOAMI = BER_BVC(LDAP_EXOP_X_WHO_AM_I);
const struct berval slap_EXOP_MODIFY_PASSWD = BER_BVC(LDAP_EXOP_MODIFY_PASSWD);
const struct berval slap_EXOP_START_TLS = BER_BVC(LDAP_EXOP_START_TLS);
static struct {
const struct berval *oid;
slap_mask_t flags;
SLAP_EXTOP_MAIN_FN *ext_main;
} builtin_extops[] = {
{ &slap_EXOP_CANCEL, SLAP_EXOP_HIDE, cancel_extop },
{ &slap_EXOP_WHOAMI, 0, whoami_extop },
{ &slap_EXOP_MODIFY_PASSWD, 0, passwd_extop },
#ifdef HAVE_TLS
{ &slap_EXOP_START_TLS, 0, starttls_extop },
#endif
{ NULL, 0, NULL }
};
static struct extop_list *find_extop(
struct extop_list *list, struct berval *oid );
struct berval *
get_supported_extop (int index)
{
struct extop_list *ext;
/* linear scan is slow, but this way doesn't force a
* big change on root_dse.c, where this routine is used.
*/
for (ext = supp_ext_list; ext != NULL && --index >= 0; ext = ext->next) {
; /* empty */
}
if (ext == NULL) return NULL;
return &ext->oid;
}
int exop_root_dse_info( Entry *e )
{
AttributeDescription *ad_supportedExtension
= slap_schema.si_ad_supportedExtension;
struct berval vals[2];
struct extop_list *ext;
vals[1].bv_val = NULL;
vals[1].bv_len = 0;
for (ext = supp_ext_list; ext != NULL; ext = ext->next) {
if( ext->flags & SLAP_EXOP_HIDE ) continue;
vals[0] = ext->oid;
if( attr_merge( e, ad_supportedExtension, vals, NULL ) ) {
return LDAP_OTHER;
}
}
return LDAP_SUCCESS;
}
int
do_extended(
Operation *op,
SlapReply *rs
)
{
struct berval reqdata = {0, NULL};
ber_tag_t tag;
ber_len_t len;
struct extop_list *ext = NULL;
#if defined(LDAP_SLAPI)
Slapi_PBlock *pb = op->o_pb;
SLAPI_FUNC funcAddr = NULL;
int extop_rc;
int msg_sent = FALSE;
#endif /* defined(LDAP_SLAPI) */
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, ENTRY, "do_extended: conn %d\n", op->o_connid, 0, 0 );
#else
Debug( LDAP_DEBUG_TRACE, "do_extended\n", 0, 0, 0 );
#endif
if( op->o_protocol < LDAP_VERSION3 ) {
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, ERR,
"do_extended: protocol version (%d) too low.\n", op->o_protocol, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY,
"do_extended: protocol version (%d) too low\n",
op->o_protocol, 0 ,0 );
#endif
send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "requires LDAPv3" );
rs->sr_err = -1;
goto done;
}
if ( ber_scanf( op->o_ber, "{m" /*}*/, &op->ore_reqoid ) == LBER_ERROR ) {
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, ERR, "do_extended: conn %d ber_scanf failed\n",
op->o_connid, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "do_extended: ber_scanf failed\n", 0, 0 ,0 );
#endif
send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
rs->sr_err = -1;
goto done;
}
#ifdef LDAP_SLAPI
slapi_int_get_extop_plugin( &op->ore_reqoid, &funcAddr ); /* NS-SLAPI extended operation */
if( !funcAddr && !(ext = find_extop(supp_ext_list, &op->ore_reqoid )))
#else
if( !(ext = find_extop(supp_ext_list, &op->ore_reqoid )))
#endif
{
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, ERR,
"do_extended: conn %d unsupported operation \"%s\"\n",
op->o_connid, op->ore_reqoid.bv_val, 0 );
#else
Debug( LDAP_DEBUG_ANY, "do_extended: unsupported operation \"%s\"\n",
op->ore_reqoid.bv_val, 0 ,0 );
#endif
send_ldap_error( op, rs, LDAP_PROTOCOL_ERROR,
"unsupported extended operation" );
goto done;
}
tag = ber_peek_tag( op->o_ber, &len );
if( ber_peek_tag( op->o_ber, &len ) == LDAP_TAG_EXOP_REQ_VALUE ) {
if( ber_scanf( op->o_ber, "m", &reqdata ) == LBER_ERROR ) {
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, ERR,
"do_extended: conn %d ber_scanf failed\n",
op->o_connid, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "do_extended: ber_scanf failed\n", 0, 0 ,0 );
#endif
send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );
rs->sr_err = -1;
goto done;
}
}
if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, ERR,
"do_extended: conn %d get_ctrls failed\n", op->o_connid, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "do_extended: get_ctrls failed\n", 0, 0 ,0 );
#endif
return rs->sr_err;
}
/* check for controls inappropriate for all extended operations */
if( get_manageDSAit( op ) == SLAP_CRITICAL_CONTROL ) {
send_ldap_error( op, rs,
LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
"manageDSAit control inappropriate" );
goto done;
}
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, DETAIL1,
"do_extended: conn %d oid=%s\n.", op->o_connid, op->ore_reqoid.bv_val, 0 );
#else
Debug( LDAP_DEBUG_ARGS, "do_extended: oid=%s\n", op->ore_reqoid.bv_val, 0 ,0 );
#endif
#if defined(LDAP_SLAPI)
if ( funcAddr != NULL ) {
rs->sr_err = slapi_pblock_set( pb, SLAPI_EXT_OP_REQ_OID,
(void *)op->ore_reqoid.bv_val);
if ( rs->sr_err != LDAP_SUCCESS ) {
rs->sr_err = LDAP_OTHER;
goto done;
}
rs->sr_err = slapi_pblock_set( pb, SLAPI_EXT_OP_REQ_VALUE,
(void *)&reqdata);
if ( rs->sr_err != LDAP_SUCCESS ) {
rs->sr_err = LDAP_OTHER;
goto done;
}
rs->sr_err = slapi_int_pblock_set_operation( pb, op );
if ( rs->sr_err != LDAP_SUCCESS ) {
rs->sr_err = LDAP_OTHER;
goto done;
}
extop_rc = (*funcAddr)( pb );
if ( extop_rc == SLAPI_PLUGIN_EXTENDED_SENT_RESULT ) {
msg_sent = TRUE;
} else if ( extop_rc == SLAPI_PLUGIN_EXTENDED_NOT_HANDLED ) {
rs->sr_err = LDAP_PROTOCOL_ERROR;
rs->sr_text = UNSUPPORTED_EXTENDEDOP;
} else {
rs->sr_err = slapi_pblock_get( pb, SLAPI_EXT_OP_RET_OID,
&rs->sr_rspoid);
if ( rs->sr_err != LDAP_SUCCESS ) {
goto done2;
}
rs->sr_err = slapi_pblock_get( pb, SLAPI_EXT_OP_RET_VALUE,
&rs->sr_rspdata);
if ( rs->sr_err != LDAP_SUCCESS ) {
goto done2;
}
rs->sr_err = extop_rc;
send_ldap_extended( op, rs );
msg_sent = TRUE;
}
done2:;
if ( rs->sr_err != LDAP_SUCCESS && msg_sent == FALSE ) {
send_ldap_result( op, rs );
}
if ( rs->sr_rspoid != NULL ) {
ch_free( (char *)rs->sr_rspoid );
}
if ( rs->sr_rspdata != NULL ) {
ber_bvfree( rs->sr_rspdata );
}
} else { /* start of OpenLDAP extended operation */
#endif /* defined( LDAP_SLAPI ) */
if (reqdata.bv_val) op->ore_reqdata = &reqdata;
rs->sr_err = (ext->ext_main)( op, rs );
if( rs->sr_err != SLAPD_ABANDON ) {
if ( rs->sr_err == LDAP_REFERRAL && rs->sr_ref == NULL ) {
rs->sr_ref = referral_rewrite( default_referral,
NULL, NULL, LDAP_SCOPE_DEFAULT );
if ( !rs->sr_ref ) rs->sr_ref = default_referral;
if ( !rs->sr_ref ) {
rs->sr_err = LDAP_UNWILLING_TO_PERFORM;
rs->sr_text = "referral missing";
}
}
send_ldap_extended( op, rs );
if ( rs->sr_ref != default_referral ) {
ber_bvarray_free( rs->sr_ref );
rs->sr_ref = NULL;
}
}
if ( rs->sr_rspoid != NULL ) {
free( (char *)rs->sr_rspoid );
}
if ( rs->sr_rspdata != NULL ) {
ber_bvfree( rs->sr_rspdata );
}
#ifdef LDAP_SLAPI
} /* end of OpenLDAP extended operation */
#endif /* LDAP_SLAPI */
done:
return rs->sr_err;
}
int
load_extop(
struct berval *ext_oid,
slap_mask_t ext_flags,
SLAP_EXTOP_MAIN_FN *ext_main )
{
struct extop_list *ext;
if( ext_oid == NULL || ext_oid->bv_val == NULL ||
ext_oid->bv_val[0] == '\0' || ext_oid->bv_len == 0 ) return -1;
if(!ext_main) return -1;
ext = ch_calloc(1, sizeof(struct extop_list) + ext_oid->bv_len + 1);
if (ext == NULL)
return(-1);
ext->flags = ext_flags;
ext->oid.bv_val = (char *)(ext + 1);
AC_MEMCPY( ext->oid.bv_val, ext_oid->bv_val, ext_oid->bv_len );
ext->oid.bv_len = ext_oid->bv_len;
ext->oid.bv_val[ext->oid.bv_len] = '\0';
ext->ext_main = ext_main;
ext->next = supp_ext_list;
supp_ext_list = ext;
return(0);
}
int
extops_init (void)
{
int i;
for (i = 0; builtin_extops[i].oid != NULL; i++) {
load_extop((struct berval *)builtin_extops[i].oid,
builtin_extops[i].flags,
builtin_extops[i].ext_main);
}
return(0);
}
int
extops_kill (void)
{
struct extop_list *ext;
/* we allocated the memory, so we have to free it, too. */
while ((ext = supp_ext_list) != NULL) {
supp_ext_list = ext->next;
ch_free(ext);
}
return(0);
}
static struct extop_list *
find_extop( struct extop_list *list, struct berval *oid )
{
struct extop_list *ext;
for (ext = list; ext; ext = ext->next) {
if (bvmatch(&ext->oid, oid))
return(ext);
}
return(NULL);
}
static int
whoami_extop (
Operation *op,
SlapReply *rs )
{
struct berval *bv;
if ( op->ore_reqdata != NULL ) {
/* no request data should be provided */
rs->sr_text = "no request data expected";
return LDAP_PROTOCOL_ERROR;
}
op->o_bd = op->o_conn->c_authz_backend;
if( backend_check_restrictions( op, rs,
(struct berval *)&slap_EXOP_WHOAMI ) != LDAP_SUCCESS ) {
return rs->sr_err;
}
bv = (struct berval *) ch_malloc( sizeof(struct berval) );
if( op->o_dn.bv_len ) {
bv->bv_len = op->o_dn.bv_len + sizeof("dn:")-1;
bv->bv_val = ch_malloc( bv->bv_len + 1 );
AC_MEMCPY( bv->bv_val, "dn:", sizeof("dn:")-1 );
AC_MEMCPY( &bv->bv_val[sizeof("dn:")-1], op->o_dn.bv_val,
op->o_dn.bv_len );
bv->bv_val[bv->bv_len] = '\0';
} else {
bv->bv_len = 0;
bv->bv_val = NULL;
}
rs->sr_rspdata = bv;
return LDAP_SUCCESS;
}