openldap/servers/slapd/extended.c
Pierangelo Masarati d19706634c fix previous commit
2002-12-07 19:00:34 +00:00

411 lines
9.8 KiB
C

/* $OpenLDAP$ */
/*
* Copyright 1999-2002 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms are permitted only
* as authorized by the OpenLDAP Public License. A copy of this
* license is available at http://www.OpenLDAP.org/license.html or
* in file LICENSE in the top-level directory of the distribution.
*/
/*
* 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 "slapi_common.h"
#include <stdio.h>
#include <ac/socket.h>
#include <ac/string.h>
#include "slap.h"
#include "slapi.h"
#include "lber_pvt.h"
#define UNSUPPORTED_EXTENDEDOP "unsupported extended operation"
static struct extop_list {
struct extop_list *next;
struct berval oid;
SLAP_EXTOP_MAIN_FN *ext_main;
} *supp_ext_list = NULL;
static SLAP_EXTOP_MAIN_FN whoami_extop;
/* BerVal Constant initializer */
#define BVC(x) {sizeof(x)-1, x}
/* 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.
*/
static struct {
struct berval oid;
SLAP_EXTOP_MAIN_FN *ext_main;
} builtin_extops[] = {
#ifdef HAVE_TLS
{ BVC(LDAP_EXOP_START_TLS), starttls_extop },
#endif
{ BVC(LDAP_EXOP_MODIFY_PASSWD), passwd_extop },
{ BVC(LDAP_EXOP_X_WHO_AM_I), whoami_extop },
{ {0,NULL}, 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
do_extended(
Connection *conn,
Operation *op
)
{
int rc = LDAP_SUCCESS;
struct berval reqoid = {0, NULL};
struct berval reqdata = {0, NULL};
ber_tag_t tag;
ber_len_t len;
struct extop_list *ext;
const char *text;
BerVarray refs;
char *rspoid;
struct berval *rspdata;
LDAPControl **rspctrls;
#if defined(LDAP_SLAPI)
Slapi_PBlock *pb = op->o_pb;
SLAPI_FUNC funcAddr = NULL;
int extop_rc;
int msg_sent=FALSE;
char *result_msg="";
#endif /* defined(LDAP_SLAPI) */
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, ENTRY, "do_extended: conn %d\n", conn->c_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_disconnect( conn, op,
LDAP_PROTOCOL_ERROR, "requires LDAPv3" );
rc = -1;
goto done;
}
if ( ber_scanf( op->o_ber, "{m" /*}*/, &reqoid ) == LBER_ERROR ) {
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, ERR, "do_extended: conn %d ber_scanf failed\n",
conn->c_connid, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "do_extended: ber_scanf failed\n", 0, 0 ,0 );
#endif
send_ldap_disconnect( conn, op,
LDAP_PROTOCOL_ERROR, "decoding error" );
rc = -1;
goto done;
}
#if !defined(LDAP_SLAPI)
if( !(ext = find_extop(supp_ext_list, &reqoid)) ) {
#else /* defined(LDAP_SLAPI) */
/* Netscape extended operation */
getPluginFunc( &reqoid, &funcAddr );
if( !(ext = find_extop(supp_ext_list, &reqoid)) && !(funcAddr) ) {
#endif /* defined(LDAP_SLAPI) */
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, ERR,
"do_extended: conn %d unsupported operation \"%s\"\n",
conn->c_connid, reqoid.bv_val, 0 );
#else
Debug( LDAP_DEBUG_ANY, "do_extended: unsupported operation \"%s\"\n",
reqoid.bv_val, 0 ,0 );
#endif
send_ldap_result( conn, op, rc = LDAP_PROTOCOL_ERROR,
NULL, "unsupported extended operation", NULL, NULL );
goto done;
}
op->o_extendedop = reqoid.bv_val;
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",
conn->c_connid, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "do_extended: ber_scanf failed\n", 0, 0 ,0 );
#endif
send_ldap_disconnect( conn, op,
LDAP_PROTOCOL_ERROR, "decoding error" );
rc = -1;
goto done;
}
}
if( (rc = get_ctrls( conn, op, 1 )) != LDAP_SUCCESS ) {
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, ERR,
"do_extended: conn %d get_ctrls failed\n", conn->c_connid, 0, 0 );
#else
Debug( LDAP_DEBUG_ANY, "do_extended: get_ctrls failed\n", 0, 0 ,0 );
#endif
return rc;
}
/* check for controls inappropriate for all extended operations */
if( get_manageDSAit( op ) == SLAP_CRITICAL_CONTROL ) {
send_ldap_result( conn, op,
rc = LDAP_UNAVAILABLE_CRITICAL_EXTENSION,
NULL, "manageDSAit control inappropriate",
NULL, NULL );
goto done;
}
#ifdef NEW_LOGGING
LDAP_LOG( OPERATION, DETAIL1,
"do_extended: conn %d oid=%d\n.", conn->c_connid, reqoid.bv_val, 0 );
#else
Debug( LDAP_DEBUG_ARGS, "do_extended: oid=%s\n", reqoid.bv_val, 0 ,0 );
#endif
rspoid = NULL;
rspdata = NULL;
rspctrls = NULL;
text = NULL;
refs = NULL;
#if defined(LDAP_SLAPI)
if (ext != NULL) { /* OpenLDAP extended operation */
#endif /* defined(LDAP_SLAPI) */
rc = (ext->ext_main)( conn, op,
reqoid.bv_val, reqdata.bv_val ? &reqdata : NULL,
&rspoid, &rspdata, &rspctrls, &text, &refs );
if( rc != SLAPD_ABANDON ) {
if ( rc == LDAP_REFERRAL && refs == NULL ) {
refs = referral_rewrite( default_referral,
NULL, NULL, LDAP_SCOPE_DEFAULT );
}
send_ldap_extended( conn, op, rc, NULL, text, refs,
rspoid, rspdata, rspctrls );
ber_bvarray_free( refs );
}
if ( rspoid != NULL ) {
free( rspoid );
}
if ( rspdata != NULL ) {
ber_bvfree( rspdata );
}
#if defined( LDAP_SLAPI )
goto done; /* end of OpenLDAP extended operation */
} else { /* start of Netscape extended operation */
if ( ( rc = slapi_pblock_set( pb, SLAPI_EXT_OP_REQ_OID,(void *)reqoid.bv_val) ) == 0 &&
( rc = slapi_pblock_set( pb, SLAPI_EXT_OP_REQ_VALUE,(void *)&reqdata) ) == 0 &&
( rc = slapi_pblock_set( pb, SLAPI_CONNECTION,(void *)conn) ) == 0 &&
( rc = slapi_pblock_set( pb, SLAPI_OPERATION, (void *)op) ) == 0) {
extop_rc = (*funcAddr)( pb );
if ( extop_rc == SLAPI_PLUGIN_EXTENDED_SENT_RESULT ) {
msg_sent = TRUE;
} else if ( extop_rc == SLAPI_PLUGIN_EXTENDED_NOT_HANDLED ) {
rc = LDAP_PROTOCOL_ERROR;
result_msg = UNSUPPORTED_EXTENDEDOP;
} else {
if ( ( rc = slapi_pblock_get(pb, SLAPI_EXT_OP_RET_OID,&rspoid) ) == 0 &&
( rc = slapi_pblock_get(pb, SLAPI_EXT_OP_RET_VALUE,&rspdata) ) == 0 ) {
send_ldap_extended( conn, op, extop_rc, NULL, text, refs,
rspoid, rspdata, rspctrls );
msg_sent = TRUE;
} else {
rc = LDAP_OPERATIONS_ERROR;
}
}
} else {
rc = LDAP_OPERATIONS_ERROR;
}
if ( rc != LDAP_SUCCESS && msg_sent == FALSE ) {
send_ldap_result( conn, op, rc, NULL, result_msg, NULL, NULL );
}
if ( rspoid != NULL ) {
free( rspoid );
}
if ( rspdata != NULL ) {
ber_bvfree( rspdata );
}
} /* end of Netscape extended operation */
#endif /* defined( LDAP_SLAPI ) */
done:
return rc;
}
int
load_extop(
const char *ext_oid,
SLAP_EXTOP_MAIN_FN *ext_main )
{
struct extop_list *ext;
if( ext_oid == NULL || *ext_oid == '\0' ) return -1;
if(!ext_main) return -1;
ext = ch_calloc(1, sizeof(struct extop_list));
if (ext == NULL)
return(-1);
ber_str2bv( ext_oid, 0, 1, &ext->oid );
if (ext->oid.bv_val == NULL) {
free(ext);
return(-1);
}
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.bv_val != NULL; i++) {
load_extop(builtin_extops[i].oid.bv_val, 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;
if (ext->oid.bv_val != NULL)
ch_free(ext->oid.bv_val);
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 (
Connection *conn,
Operation *op,
const char * reqoid,
struct berval * reqdata,
char ** rspoid,
struct berval ** rspdata,
LDAPControl ***rspctrls,
const char ** text,
BerVarray * refs )
{
struct berval *bv;
if ( reqdata != NULL ) {
/* no request data should be provided */
*text = "no request data expected";
return LDAP_PROTOCOL_ERROR;
}
{
int rc;
struct berval whoami = BER_BVC( LDAP_EXOP_X_WHO_AM_I );
rc = backend_check_restrictions( conn->c_authz_backend,
conn, op, &whoami, text );
if( rc != LDAP_SUCCESS ) return rc;
}
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;
}
*rspdata = bv;
return LDAP_SUCCESS;
}