dsdb: fixed special case of zero NTTIME

we can't convert 0 NTTIME via a unix time_t

Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>

diff --git a/source4/dsdb/schema/schema_syntax.c b/source4/dsdb/schema/schema_syntax.c
index a93cdfaaa913591b77d2e4d832ddfbfefae8ef58..d443c009af3dc597272dccd4c8dc7b03347b1982 100644 (file)
--- a/source4/dsdb/schema/schema_syntax.c
+++ b/source4/dsdb/schema/schema_syntax.c
@@ -554,6 +554,11 @@ static WERROR dsdb_syntax_NTTIME_UTC_drsuapi_to_ldb(const struct dsdb_syntax_ctx
                }
 
                v = BVAL(in->value_ctr.values[i].blob->data, 0);
+               if (v == 0) {
+                       /* special case for 1601 zero timestamp */
+                       out->values[i] = data_blob_string_const("16010101000000.0Z");
+                       continue;
+               }
                v *= 10000000;
                t = nt_time_to_unix(v);
 
@@ -607,6 +612,11 @@ static WERROR dsdb_syntax_NTTIME_UTC_ldb_to_drsuapi(const struct dsdb_syntax_ctx
                blobs[i] = data_blob_talloc(blobs, NULL, 8);
                W_ERROR_HAVE_NO_MEMORY(blobs[i].data);
 
+               if (ldb_val_string_cmp("16010101000000.0Z", &in->values[i]) == 0) {
+                       SBVALS(blobs[i].data, 0, 0);
+                       continue;
+               }
+
                t = ldb_string_utc_to_time((const char *)in->values[i].data);
                unix_to_nt_time(&v, t);
                v /= 10000000;
@@ -693,6 +703,11 @@ static WERROR dsdb_syntax_NTTIME_drsuapi_to_ldb(const struct dsdb_syntax_ctx *ct
                }
 
                v = BVAL(in->value_ctr.values[i].blob->data, 0);
+               if (v == 0) {
+                       /* special case for 1601 zero timestamp */
+                       out->values[i] = data_blob_string_const("16010101000000.0Z");
+                       continue;
+               }
                v *= 10000000;
                t = nt_time_to_unix(v);
 
@@ -739,6 +754,11 @@ static WERROR dsdb_syntax_NTTIME_ldb_to_drsuapi(const struct dsdb_syntax_ctx *ct
                blobs[i] = data_blob_talloc(blobs, NULL, 8);
                W_ERROR_HAVE_NO_MEMORY(blobs[i].data);
 
+               if (ldb_val_string_cmp("16010101000000.0Z", &in->values[i]) == 0) {
+                       SBVALS(blobs[i].data, 0, 0);
+                       continue;
+               }
+
                ret = ldb_val_to_time(&in->values[i], &t);
                if (ret != LDB_SUCCESS) {
                        return WERR_DS_INVALID_ATTRIBUTE_SYNTAX;