3 files changed, 61 insertions, 29 deletions

diff --git a/source4/librpc/rpc/dcerpc.h b/source4/librpc/rpc/dcerpc.h
index 746f6b6d50..f075075c02 100644
--- a/source4/librpc/rpc/dcerpc.h
+++ b/source4/librpc/rpc/dcerpc.h
@@ -28,9 +28,9 @@
 #include "librpc/ndr/libndr.h"
 
 enum dcerpc_transport_t {
-	NCACN_NP, NCACN_IP_TCP, NCACN_IP_UDP, NCACN_VNS_IPC, NCACN_VNS_SPP, 
-	NCACN_AT_DSP, NCADG_AT_DDP, NCALRPC, NCACN_UNIX_STREAM, NCADG_UNIX_DGRAM,
-	NCACN_HTTP, NCADG_IPX, NCACN_SPX };
+	NCA_UNKNOWN, NCACN_NP, NCACN_IP_TCP, NCACN_IP_UDP, NCACN_VNS_IPC, 
+	NCACN_VNS_SPP, NCACN_AT_DSP, NCADG_AT_DDP, NCALRPC, NCACN_UNIX_STREAM, 
+	NCADG_UNIX_DGRAM, NCACN_HTTP, NCADG_IPX, NCACN_SPX };
 
 /*
   this defines a generic security context for signed/sealed dcerpc pipes.
diff --git a/source4/librpc/rpc/dcerpc_util.c b/source4/librpc/rpc/dcerpc_util.c
index 66ce2bda85..e1fb4c1d86 100644
--- a/source4/librpc/rpc/dcerpc_util.c
+++ b/source4/librpc/rpc/dcerpc_util.c
@@ -235,15 +235,17 @@ char *dcerpc_binding_string(TALLOC_CTX *mem_ctx, const struct dcerpc_binding *b)
 {
 	char *s = talloc_strdup(mem_ctx, "");
 	int i;
-	const char *t_name=NULL;
+	const char *t_name = NULL;
 
-	for (i=0;i<ARRAY_SIZE(transports);i++) {
-		if (transports[i].transport == b->transport) {
-			t_name = transports[i].name;
+	if (b->transport != NCA_UNKNOWN) {
+		for (i=0;i<ARRAY_SIZE(transports);i++) {
+			if (transports[i].transport == b->transport) {
+				t_name = transports[i].name;
+			}
+		}
+		if (!t_name) {
+			return NULL;
 		}
-	}
-	if (!t_name) {
-		return NULL;
 	}
 
 	if (!GUID_all_zero(&b->object.uuid)) { 
@@ -251,8 +253,13 @@ char *dcerpc_binding_string(TALLOC_CTX *mem_ctx, const struct dcerpc_binding *b)
 				    GUID_string(mem_ctx, &b->object.uuid));
 	}
 
-	s = talloc_asprintf_append(s, "%s:", t_name);
-	if (!s) return NULL;
+	if (t_name != NULL) {
+		s = talloc_asprintf_append(s, "%s:", t_name);
+		if (s == NULL) 
+			return NULL;
+	} else {
+		s = NULL;
+	}
 
 	if (b->host) {
 		s = talloc_asprintf_append(s, "%s", b->host);
@@ -323,27 +330,29 @@ NTSTATUS dcerpc_parse_binding(TALLOC_CTX *mem_ctx, const char *s, struct dcerpc_
 	b->object.if_version = 0;
 
 	p = strchr(s, ':');
-	if (!p) {
-		return NT_STATUS_INVALID_PARAMETER;
-	}
 
-	type = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s));
-	if (!type) {
-		return NT_STATUS_NO_MEMORY;
-	}
+	if (p == NULL) {
+		b->transport = NCA_UNKNOWN;
+	} else {
+		type = talloc_strndup(mem_ctx, s, PTR_DIFF(p, s));
+		if (!type) {
+			return NT_STATUS_NO_MEMORY;
+		}
 
-	for (i=0;i<ARRAY_SIZE(transports);i++) {
-		if (strcasecmp(type, transports[i].name) == 0) {
-			b->transport = transports[i].transport;
-			break;
+		for (i=0;i<ARRAY_SIZE(transports);i++) {
+			if (strcasecmp(type, transports[i].name) == 0) {
+				b->transport = transports[i].transport;
+				break;
+			}
+		}
+
+		if (i==ARRAY_SIZE(transports)) {
+			DEBUG(0,("Unknown dcerpc transport '%s'\n", type));
+			return NT_STATUS_INVALID_PARAMETER;
 		}
-	}
-	if (i==ARRAY_SIZE(transports)) {
-		DEBUG(0,("Unknown dcerpc transport '%s'\n", type));
-		return NT_STATUS_INVALID_PARAMETER;
-	}
 	
-	s = p+1;
+		s = p+1;
+	}
 
 	p = strchr(s, '[');
 	if (p) {
diff --git a/source4/librpc/tests/binding_string.c b/source4/librpc/tests/binding_string.c
index c4ffe19e6b..18cf4dfb46 100644
--- a/source4/librpc/tests/binding_string.c
+++ b/source4/librpc/tests/binding_string.c
@@ -95,6 +95,27 @@ static const char *test_strings[] = {
 	"ncacn_unix_stream:[/tmp/epmapper,sign]",
 };
 
+static bool test_no_transport(struct torture_context *tctx)
+{
+	const char *binding = "somehost";
+	struct dcerpc_binding *b;
+	const char *s;
+
+	/* Parse */
+	torture_assert_ntstatus_ok(tctx, dcerpc_parse_binding(tctx, binding, &b),
+		"Error parsing binding string");
+
+	torture_assert(tctx, b->transport == NCA_UNKNOWN, "invalid transport");
+
+	s = dcerpc_binding_string(tctx, b);
+	torture_assert(tctx, s != NULL, "Error converting binding back to string");
+
+	torture_assert_casestr_equal(tctx, binding, s, 
+		"Mismatch while comparing original and regenerated binding strings");
+
+	return true;
+}
+
 struct torture_suite *torture_local_binding_string(TALLOC_CTX *mem_ctx)
 {
 	int i;
@@ -106,5 +127,7 @@ struct torture_suite *torture_local_binding_string(TALLOC_CTX *mem_ctx)
 						test_BindingString, test_strings[i]);
 	}
 
+	torture_suite_add_simple_test(suite, "no transport", test_no_transport);
+
 	return suite;
 }