/*
use ndr_print_* to convert a NDR formatted blob to a ldif formatted blob
If mask_errors is true, then function succeeds but out data
is set to "<Unable to decode binary data>" message
\return 0 on success; -1 on error
*/
static int ldif_write_NDR(struct ldb_context *ldb, void *mem_ctx,
const struct ldb_val *in, struct ldb_val *out,
size_t struct_size,
ndr_pull_flags_fn_t pull_fn,
ndr_print_fn_t print_fn,
bool mask_errors)
{
uint8_t *p;
enum ndr_err_code err;
if (!(ldb_get_flags(ldb) & LDB_FLG_SHOW_BINARY)) {
return ldb_handler_copy(ldb, mem_ctx, in, out);
}
p = talloc_size(mem_ctx, struct_size);
err = ndr_pull_struct_blob(in, mem_ctx,
p, pull_fn);
if (err != NDR_ERR_SUCCESS) {
/* fail in not in mask_error mode */
if (!mask_errors) {
return -1;
}
talloc_free(p);
out->data = (uint8_t *)talloc_strdup(mem_ctx, "<Unable to decode binary data>");
out->length = strlen((const char *)out->data);
return 0;
}
out->data = (uint8_t *)ndr_print_struct_string(mem_ctx, print_fn, "NDR", p);
talloc_free(p);
if (out->data == NULL) {
return ldb_handler_copy(ldb, mem_ctx, in, out);
}
out->length = strlen((char *)out->data);
return 0;
}
/*
convert a NDR formatted blob to a ldif formatted ntSecurityDescriptor (SDDL format)
*/
static int ldif_write_ntSecurityDescriptor(struct ldb_context *ldb, void *mem_ctx,
const struct ldb_val *in, struct ldb_val *out)
{
struct security_descriptor *sd;
enum ndr_err_code ndr_err;
if (ldb_get_flags(ldb) & LDB_FLG_SHOW_BINARY) {
return ldif_write_NDR(ldb, mem_ctx, in, out,
sizeof(struct security_descriptor),
(ndr_pull_flags_fn_t)ndr_pull_security_descriptor,
(ndr_print_fn_t)ndr_print_security_descriptor,
true);
}
sd = talloc(mem_ctx, struct security_descriptor);
if (sd == NULL) {
return -1;
}
/* We can't use ndr_pull_struct_blob_all because this contains relative pointers */
ndr_err = ndr_pull_struct_blob(in, sd, sd,
(ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
talloc_free(sd);
return -1;
}
out->data = (uint8_t *)sddl_encode(mem_ctx, sd, samdb_domain_sid_cache_only(ldb));
talloc_free(sd);
if (out->data == NULL) {
return -1;
}
out->length = strlen((const char *)out->data);
return 0;
}
static int ldif_write_dn_binary_NDR(struct ldb_context *ldb, void *mem_ctx,
const struct ldb_val *in, struct ldb_val *out,
size_t struct_size,
ndr_pull_flags_fn_t pull_fn,
ndr_print_fn_t print_fn,
bool mask_errors)
{
uint8_t *p = NULL;
enum ndr_err_code err;
struct dsdb_dn *dsdb_dn = NULL;
char *dn_str = NULL;
char *str = NULL;
if (!(ldb_get_flags(ldb) & LDB_FLG_SHOW_BINARY)) {
return ldb_handler_copy(ldb, mem_ctx, in, out);
}
dsdb_dn = dsdb_dn_parse(mem_ctx, ldb, in, DSDB_SYNTAX_BINARY_DN);
if (dsdb_dn == NULL) {
return ldb_handler_copy(ldb, mem_ctx, in, out);
}
p = talloc_size(dsdb_dn, struct_size);
if (p == NULL) {
TALLOC_FREE(dsdb_dn);
return ldb_handler_copy(ldb, mem_ctx, in, out);
}
err = ndr_pull_struct_blob(&dsdb_dn->extra_part, p, p, pull_fn);
if (err != NDR_ERR_SUCCESS) {
/* fail in not in mask_error mode */
if (!mask_errors) {
return -1;
}
TALLOC_FREE(dsdb_dn);
return ldb_handler_copy(ldb, mem_ctx, in, out);
}
dn_str = ldb_dn_get_extended_linearized(dsdb_dn, dsdb_dn->dn, 1);
if (dn_str == NULL) {
TALLOC_FREE(dsdb_dn);
return ldb_handler_copy(ldb, mem_ctx, in, out);
}
str = ndr_print_struct_string(mem_ctx, print_fn, dn_str, p);
TALLOC_FREE(dsdb_dn);
if (str == NULL) {
return ldb_handler_copy(ldb, mem_ctx, in, out);
}
*out = data_blob_string_const(str);
return 0;
}
/*
convert a string formatted SDDL to a ldif formatted ntSecurityDescriptor (SDDL format)
*/
static int ldif_write_sddlSecurityDescriptor(struct ldb_context *ldb, void *mem_ctx,
const struct ldb_val *in, struct ldb_val *out)
{
if (ldb_get_flags(ldb) & LDB_FLG_SHOW_BINARY) {
struct security_descriptor *sd;
const struct dom_sid *sid = samdb_domain_sid(ldb);
sd = sddl_decode(mem_ctx, (const char *)in->data, sid);
out->data = (uint8_t *)ndr_print_struct_string(mem_ctx,
(ndr_print_fn_t)ndr_print_security_descriptor,
"SDDL", sd);
out->length = strlen((const char *)out->data);
talloc_free(sd);
return 0;
}
return ldb_handler_copy(ldb, mem_ctx, in, out);
}
/*
convert a NDR formatted blob to a ldif formatted prefixMap
*/
static int ldif_write_prefixMap(struct ldb_context *ldb, void *mem_ctx,
const struct ldb_val *in, struct ldb_val *out)
{
struct prefixMapBlob *blob;
enum ndr_err_code ndr_err;
char *string;
uint32_t i;
if (ldb_get_flags(ldb) & LDB_FLG_SHOW_BINARY) {
int err;
/* try to decode the blob as S4 prefixMap */
err = ldif_write_NDR(ldb, mem_ctx, in, out,
sizeof(struct prefixMapBlob),
(ndr_pull_flags_fn_t)ndr_pull_prefixMapBlob,
(ndr_print_fn_t)ndr_print_prefixMapBlob,
false);
if (0 == err) {
return err;
}
/* try parsing it as Windows PrefixMap value */
return ldif_write_NDR(ldb, mem_ctx, in, out,
sizeof(struct drsuapi_MSPrefixMap_Ctr),
(ndr_pull_flags_fn_t)ndr_pull_drsuapi_MSPrefixMap_Ctr,
(ndr_print_fn_t)ndr_print_drsuapi_MSPrefixMap_Ctr,
true);
}
blob = talloc(mem_ctx, struct prefixMapBlob);
if (blob == NULL) {
return -1;
}
ndr_err = ndr_pull_struct_blob_all(in, blob,
blob,
(ndr_pull_flags_fn_t)ndr_pull_prefixMapBlob);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
goto failed;
}
if (blob->version != PREFIX_MAP_VERSION_DSDB) {
goto failed;
}
string = talloc_strdup(mem_ctx, "");
if (string == NULL) {
goto failed;
}
for (i=0; i < blob->ctr.dsdb.num_mappings; i++) {
DATA_BLOB oid_blob;
char *partial_oid = NULL;
if (i > 0) {
string = talloc_asprintf_append(string, ";");
}
oid_blob = data_blob_const(blob->ctr.dsdb.mappings[i].oid.binary_oid,
blob->ctr.dsdb.mappings[i].oid.length);
if (!ber_read_partial_OID_String(blob, oid_blob, &partial_oid)) {
DEBUG(0, ("ber_read_partial_OID failed on prefixMap item with id: 0x%X",
blob->ctr.dsdb.mappings[i].id_prefix));
goto failed;
}
string = talloc_asprintf_append(string, "%u:%s",
blob->ctr.dsdb.mappings[i].id_prefix,
partial_oid);
talloc_free(discard_const(partial_oid));
if (string == NULL) {
goto failed;
}
}
talloc_free(blob);
*out = data_blob_string_const(string);
return 0;
failed:
talloc_free(blob);
return -1;
}
