Allow None to be used as a valid credential for functions that take a

credential as a parameter.

source/python/py_samr.c

@@ -283,10 +283,16 @@ static PyObject *samr_connect(PyObject *self, PyObject *args, PyObject *kw)
 	NTSTATUS ntstatus;
 
 	if (!PyArg_ParseTupleAndKeywords(
-		    args, kw, "s|O!i", kwlist, &server, &PyDict_Type,
-		    &creds, &desired_access)) 
+		    args, kw, "s|Oi", kwlist, &server, &creds,
+		    &desired_access)) 
 		return NULL;
 
+	if (creds && creds != Py_None && !PyDict_Check(creds)) {
+		PyErr_SetString(PyExc_TypeError, 
+				"credentials must be dictionary or None");
+		return NULL;
+	}
+
 	if (!(cli = open_pipe_creds(server, creds, PIPE_SAMR, &errstr))) {
 		PyErr_SetString(samr_error, errstr);
 		free(errstr);

source/python/py_spoolss_drivers.c

@@ -38,8 +38,8 @@ PyObject *spoolss_enumprinterdrivers(PyObject *self, PyObject *args,
 	/* Parse parameters */
 
 	if (!PyArg_ParseTupleAndKeywords(
-		    args, kw, "s|iO!s", kwlist, &server, &level, &PyDict_Type,
-		    &creds, &arch))
+		    args, kw, "s|iOs", kwlist, &server, &level, &creds,
+		    &arch)) 
 		return NULL;
 	
 	if (server[0] != '\\' || server[1] != '\\') {
@@ -49,6 +49,12 @@ PyObject *spoolss_enumprinterdrivers(PyObject *self, PyObject *args,
 
 	server += 2;
 
+	if (creds && creds != Py_None && !PyDict_Check(creds)) {
+		PyErr_SetString(PyExc_TypeError, 
+				"credentials must be dictionary or None");
+		return NULL;
+	}
+
 	/* Call rpc function */
 	
 	if (!(cli = open_pipe_creds(server, creds, PIPE_SPOOLSS, &errstr))) {
@@ -248,8 +254,8 @@ PyObject *spoolss_getprinterdriverdir(PyObject *self, PyObject *args,
 	/* Parse parameters */
 
 	if (!PyArg_ParseTupleAndKeywords(
-		    args, kw, "s|isO!", kwlist, &server, &level,
-		    &arch, &PyDict_Type, &creds))
+		    args, kw, "s|isO", kwlist, &server, &level,
+		    &arch, &creds))
 		return NULL;
 
 	if (server[0] != '\\' || server[1] != '\\') {
@@ -259,6 +265,12 @@ PyObject *spoolss_getprinterdriverdir(PyObject *self, PyObject *args,
 
 	server += 2;
 
+	if (creds && creds != Py_None && !PyDict_Check(creds)) {
+		PyErr_SetString(PyExc_TypeError, 
+				"credentials must be dictionary or None");
+		return NULL;
+	}
+
 	/* Call rpc function */
 
 	if (!(cli = open_pipe_creds(server, creds, PIPE_SPOOLSS, &errstr))) {
@@ -324,13 +336,19 @@ PyObject *spoolss_addprinterdriver(PyObject *self, PyObject *args,
 	} dinfo;
 
 	if (!PyArg_ParseTupleAndKeywords(
-		    args, kw, "sO!|O!", kwlist, &server, &PyDict_Type,
-		    &info, &PyDict_Type, &creds))
+		    args, kw, "sO!|O", kwlist, &server, &PyDict_Type,
+		    &info, &creds))
 		return NULL;
 	
 	if (server[0] == '\\' && server[1] == '\\')
 		server += 2;
 
+	if (creds && creds != Py_None && !PyDict_Check(creds)) {
+		PyErr_SetString(PyExc_TypeError, 
+				"credentials must be dictionary or None");
+		return NULL;
+	}
+
 	if (!(mem_ctx = talloc_init())) {
 		PyErr_SetString(
 			spoolss_error, "unable to init talloc context\n");

source/python/py_spoolss_ports.c

@@ -37,13 +37,18 @@ PyObject *spoolss_enumports(PyObject *self, PyObject *args, PyObject *kw)
 	/* Parse parameters */
 
 	if (!PyArg_ParseTupleAndKeywords(
-		    args, kw, "s|iO!", kwlist, &server, &level,
-		    &PyDict_Type, &creds))
+		    args, kw, "s|iO", kwlist, &server, &level, &creds))
 		return NULL;
 	
 	if (server[0] == '\\' && server[1] == '\\')
 		server += 2;
 
+	if (creds && creds != Py_None && !PyDict_Check(creds)) {
+		PyErr_SetString(PyExc_TypeError, 
+				"credentials must be dictionary or None");
+		return NULL;
+	}
+
 	if (!(cli = open_pipe_creds(server, creds, PIPE_SPOOLSS, &errstr))) {
 		PyErr_SetString(spoolss_error, errstr);
 		free(errstr);

source/python/py_spoolss_printers.c

@@ -34,7 +34,7 @@ PyObject *spoolss_openprinter(PyObject *self, PyObject *args, PyObject *kw)
 	struct cli_state *cli;
 
 	if (!PyArg_ParseTupleAndKeywords(
-		    args, kw, "s|O!i", kwlist, &unc_name, &PyDict_Type, &creds,
+		    args, kw, "s|Oi", kwlist, &unc_name, &creds,
 		    &desired_access))
 		return NULL;
 
@@ -50,6 +50,12 @@ PyObject *spoolss_openprinter(PyObject *self, PyObject *args, PyObject *kw)
 		*c = 0;
 	}
 
+	if (creds && creds != Py_None && !PyDict_Check(creds)) {
+		PyErr_SetString(PyExc_TypeError, 
+				"credentials must be dictionary or None");
+		return NULL;
+	}
+
 	if (!(cli = open_pipe_creds(server, creds, PIPE_SPOOLSS, &errstr))) {
 		PyErr_SetString(spoolss_error, errstr);
 		free(errstr);
@@ -286,13 +292,19 @@ PyObject *spoolss_enumprinters(PyObject *self, PyObject *args, PyObject *kw)
 	/* Parse parameters */
 
 	if (!PyArg_ParseTupleAndKeywords(
-		    args, kw, "s|siiO!", kwlist, &server, &name, &level, 
-		    &flags, &PyDict_Type, &creds))
+		    args, kw, "s|siiO", kwlist, &server, &name, &level, 
+		    &flags, &creds))
 		return NULL;
 	
 	if (server[0] == '\\' && server[1] == '\\')
 		server += 2;
 
+	if (creds && creds != Py_None && !PyDict_Check(creds)) {
+		PyErr_SetString(PyExc_TypeError, 
+				"credentials must be dictionary or None");
+		return NULL;
+	}
+
 	if (!(cli = open_pipe_creds(server, creds, PIPE_SPOOLSS, &errstr))) {
 		PyErr_SetString(spoolss_error, errstr);
 		free(errstr);