/*
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;
}
/*
canonicalise a objectGUID
*/
static int ldif_canonicalise_objectGUID(struct ldb_context *ldb, void *mem_ctx,
const struct ldb_val *in, struct ldb_val *out)
{
if (ldif_comparision_objectGUID_isString(in)) {
if (ldif_read_objectGUID(ldb, mem_ctx, in, out) != 0) {
/* Perhaps it wasn't a valid string after all */
return ldb_handler_copy(ldb, mem_ctx, in, out);
}
return 0;
}
return ldb_handler_copy(ldb, mem_ctx, in, out);
}
/*
read a 64 bit 2-part range
*/
static int ldif_read_range64(struct ldb_context *ldb, void *mem_ctx,
const struct ldb_val *in, struct ldb_val *out)
{
unsigned long high, low;
char buf[64];
if (memchr(in->data, '-', in->length) == NULL) {
return ldb_handler_copy(ldb, mem_ctx, in, out);
}
if (in->length > sizeof(buf)-1) {
return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
}
strncpy(buf, (const char *)in->data, in->length);
buf[in->length] = 0;
if (sscanf(buf, "%lu-%lu", &low, &high) != 2) {
return LDB_ERR_INVALID_ATTRIBUTE_SYNTAX;
}
out->data = (uint8_t *)talloc_asprintf(mem_ctx, "%llu",
(unsigned long long)(((uint64_t)high)<<32) | (low));
if (out->data == NULL) {
ldb_oom(ldb);
return LDB_ERR_OPERATIONS_ERROR;
}
out->length = strlen((char *)out->data);
return LDB_SUCCESS;
}
/* Just copy the old value. */
static struct ldb_val convert_uid_samaccount(struct ldb_module *module, TALLOC_CTX *ctx, const struct ldb_val *val)
{
struct ldb_val out = data_blob(NULL, 0);
ldb_handler_copy(module->ldb, ctx, val, &out);
return out;
}
/*
canonicalise a prefixMap
*/
static int ldif_canonicalise_prefixMap(struct ldb_context *ldb, void *mem_ctx,
const struct ldb_val *in, struct ldb_val *out)
{
if (ldif_comparision_prefixMap_isString(in)) {
return ldif_read_prefixMap(ldb, mem_ctx, in, out);
}
return ldb_handler_copy(ldb, mem_ctx, in, out);
}
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);
}
