1 files changed, 182 insertions, 1 deletions

diff --git a/source4/librpc/rpc/pyrpc_util.c b/source4/librpc/rpc/pyrpc_util.c
index e1d3450336..2af868c0c2 100644
--- a/source4/librpc/rpc/pyrpc_util.c
+++ b/source4/librpc/rpc/pyrpc_util.c
@@ -23,6 +23,11 @@
 #include <Python.h>
 #include "includes.h"
 #include "librpc/rpc/pyrpc_util.h"
+#include "librpc/rpc/dcerpc.h"
+#include "librpc/rpc/pyrpc.h"
+#include "param/pyparam.h"
+#include "auth/credentials/pycredentials.h"
+#include "lib/events/events.h"
 
 #ifndef Py_TYPE /* Py_TYPE is only available on Python > 2.6 */
 #define Py_TYPE(ob)             (((PyObject*)(ob))->ob_type)
@@ -31,7 +36,7 @@
 bool py_check_dcerpc_type(PyObject *obj, const char *module, const char *typename)
 {
 	PyObject *mod;
-        PyTypeObject *type;
+	PyTypeObject *type;
 	bool ret;
 
 	mod = PyImport_ImportModule(module);
@@ -59,3 +64,179 @@ bool py_check_dcerpc_type(PyObject *obj, const char *module, const char *typenam
 
 	return ret;
 }
+
+PyObject *py_dcerpc_interface_init_helper(PyTypeObject *type, PyObject *args, PyObject *kwargs, const struct ndr_interface_table *table)
+{
+	dcerpc_InterfaceObject *ret;
+	const char *binding_string;
+	struct cli_credentials *credentials;
+	struct loadparm_context *lp_ctx = NULL;
+	PyObject *py_lp_ctx = Py_None, *py_credentials = Py_None, *py_basis = Py_None;
+	TALLOC_CTX *mem_ctx = NULL;
+	struct tevent_context *event_ctx;
+	NTSTATUS status;
+
+	const char *kwnames[] = {
+		"binding", "lp_ctx", "credentials", "basis_connection", NULL
+	};
+
+	if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|OOO:samr", discard_const_p(char *, kwnames), &binding_string, &py_lp_ctx, &py_credentials, &py_basis)) {
+		return NULL;
+	}
+
+	mem_ctx = talloc_new(NULL);
+	if (mem_ctx == NULL) {
+		PyErr_NoMemory();
+		return NULL;
+	}
+
+	lp_ctx = lpcfg_from_py_object(mem_ctx, py_lp_ctx);
+	if (lp_ctx == NULL) {
+		PyErr_SetString(PyExc_TypeError, "Expected loadparm context");
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+
+	status = dcerpc_init(lp_ctx);
+	if (!NT_STATUS_IS_OK(status)) {
+		PyErr_SetNTSTATUS(status);
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+	credentials = cli_credentials_from_py_object(py_credentials);
+	if (credentials == NULL) {
+		PyErr_SetString(PyExc_TypeError, "Expected credentials");
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+	ret = PyObject_New(dcerpc_InterfaceObject, type);
+	ret->mem_ctx = mem_ctx;
+
+	event_ctx = s4_event_context_init(ret->mem_ctx);
+
+	if (py_basis != Py_None) {
+		struct dcerpc_pipe *base_pipe;
+		PyObject *py_base;
+		PyTypeObject *ClientConnection_Type;
+
+		py_base = PyImport_ImportModule("samba.dcerpc.base");
+		if (py_base == NULL) {
+			talloc_free(mem_ctx);
+			return NULL;
+		}
+
+		ClientConnection_Type = (PyTypeObject *)PyObject_GetAttrString(py_base, "ClientConnection");
+		if (ClientConnection_Type == NULL) {
+			PyErr_SetNone(PyExc_TypeError);
+			talloc_free(mem_ctx);
+			return NULL;
+		}
+
+		if (!PyObject_TypeCheck(py_basis, ClientConnection_Type)) {
+			PyErr_SetString(PyExc_TypeError, "basis_connection must be a DCE/RPC connection");
+			talloc_free(mem_ctx);
+			return NULL;
+		}
+
+		base_pipe = talloc_reference(mem_ctx, ((dcerpc_InterfaceObject *)py_basis)->pipe);
+
+		status = dcerpc_secondary_context(base_pipe, &ret->pipe, table);
+
+		ret->pipe = talloc_steal(ret->mem_ctx, ret->pipe);
+	} else {
+		status = dcerpc_pipe_connect(event_ctx, &ret->pipe, binding_string,
+		             table, credentials, event_ctx, lp_ctx);
+	}
+	if (NT_STATUS_IS_ERR(status)) {
+		PyErr_SetNTSTATUS(status);
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+
+	ret->pipe->conn->flags |= DCERPC_NDR_REF_ALLOC;
+	ret->binding_handle = ret->pipe->binding_handle;
+	return (PyObject *)ret;
+}
+
+static PyObject *py_dcerpc_run_function(dcerpc_InterfaceObject *iface,
+					const struct PyNdrRpcMethodDef *md,
+					PyObject *args, PyObject *kwargs)
+{
+	TALLOC_CTX *mem_ctx;
+	NTSTATUS status;
+	void *r;
+	PyObject *result = Py_None;
+
+	if (md->pack_in_data == NULL || md->unpack_out_data == NULL) {
+		PyErr_SetString(PyExc_NotImplementedError, "No marshalling code available yet");
+		return NULL;
+	}
+
+	mem_ctx = talloc_new(NULL);
+	if (mem_ctx == NULL) {
+		PyErr_NoMemory();
+		return NULL;
+	}
+
+	r = talloc_zero_size(mem_ctx, md->table->calls[md->opnum].struct_size);
+	if (r == NULL) {
+		PyErr_NoMemory();
+		return NULL;
+	}
+
+	if (!md->pack_in_data(args, kwargs, r)) {
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+
+	status = md->call(iface->binding_handle, mem_ctx, r);
+	if (!NT_STATUS_IS_OK(status)) {
+		PyErr_SetDCERPCStatus(iface->pipe, status);
+		talloc_free(mem_ctx);
+		return NULL;
+	}
+
+	result = md->unpack_out_data(r);
+
+	talloc_free(mem_ctx);
+	return result;
+}
+
+static PyObject *py_dcerpc_call_wrapper(PyObject *self, PyObject *args, void *wrapped, PyObject *kwargs)
+{	
+	dcerpc_InterfaceObject *iface = (dcerpc_InterfaceObject *)self;
+	const struct PyNdrRpcMethodDef *md = (const struct PyNdrRpcMethodDef *)wrapped;
+
+	return py_dcerpc_run_function(iface, md, args, kwargs);
+}
+
+bool PyInterface_AddNdrRpcMethods(PyTypeObject *ifacetype, const struct PyNdrRpcMethodDef *mds)
+{
+	int i;
+	for (i = 0; mds[i].name; i++) {
+		PyObject *ret;
+		struct wrapperbase *wb = (struct wrapperbase *)calloc(sizeof(struct wrapperbase), 1);
+
+		wb->name = discard_const_p(char, mds[i].name);
+		wb->flags = PyWrapperFlag_KEYWORDS;
+		wb->wrapper = (wrapperfunc)py_dcerpc_call_wrapper;
+		wb->doc = discard_const_p(char, mds[i].doc);
+
+		ret = PyDescr_NewWrapper(ifacetype, wb, discard_const_p(void, &mds[i]));
+
+		PyDict_SetItemString(ifacetype->tp_dict, mds[i].name, 
+				     (PyObject *)ret);
+	}
+
+	return true;
+}
+
+void PyErr_SetDCERPCStatus(struct dcerpc_pipe *p, NTSTATUS status)
+{
+	if (p && NT_STATUS_EQUAL(status, NT_STATUS_NET_WRITE_FAULT)) {
+		status = dcerpc_fault_to_nt_status(p->last_fault_code);
+	}
+	PyErr_SetNTSTATUS(status);
+}
+
+