s3:rpc_server: add rpc_pipe_open_internal dcerpc_binding_handle backend

metze

1 files changed, 272 insertions, 0 deletions

diff --git a/source3/rpc_server/rpc_ncacn_np_internal.c b/source3/rpc_server/rpc_ncacn_np_internal.c
index 9d15e0d3f9..58727600cf 100644
--- a/source3/rpc_server/rpc_ncacn_np_internal.c
+++ b/source3/rpc_server/rpc_ncacn_np_internal.c
@@ -315,6 +315,272 @@ static NTSTATUS rpc_pipe_internal_dispatch(struct rpc_pipe_client *cli,
 	return NT_STATUS_OK;
 }
 
+static NTSTATUS rpcint_dispatch(struct pipes_struct *p,
+				TALLOC_CTX *mem_ctx,
+				uint32_t opnum,
+				const DATA_BLOB *in_data,
+				DATA_BLOB *out_data)
+{
+	uint32_t num_cmds = rpc_srv_get_pipe_num_cmds(&p->syntax);
+	const struct api_struct *cmds = rpc_srv_get_pipe_cmds(&p->syntax);
+	uint32_t i;
+	bool ok;
+
+	/* set opnum */
+	p->opnum = opnum;
+
+	for (i = 0; i < num_cmds; i++) {
+		if (cmds[i].opnum == opnum && cmds[i].fn != NULL) {
+			break;
+		}
+	}
+
+	if (i == num_cmds) {
+		return NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE;
+	}
+
+	p->in_data.data = *in_data;
+	p->out_data.rdata = data_blob_null;
+
+	ok = cmds[i].fn(p);
+	p->in_data.data = data_blob_null;
+	if (!ok) {
+		data_blob_free(&p->out_data.rdata);
+		talloc_free_children(p->mem_ctx);
+		return NT_STATUS_RPC_CALL_FAILED;
+	}
+
+	if (p->fault_state) {
+		p->fault_state = false;
+		data_blob_free(&p->out_data.rdata);
+		talloc_free_children(p->mem_ctx);
+		return NT_STATUS_RPC_CALL_FAILED;
+	}
+
+	if (p->bad_handle_fault_state) {
+		p->bad_handle_fault_state = false;
+		data_blob_free(&p->out_data.rdata);
+		talloc_free_children(p->mem_ctx);
+		return NT_STATUS_RPC_SS_CONTEXT_MISMATCH;
+	}
+
+	if (p->rng_fault_state) {
+		p->rng_fault_state = false;
+		data_blob_free(&p->out_data.rdata);
+		talloc_free_children(p->mem_ctx);
+		return NT_STATUS_RPC_PROCNUM_OUT_OF_RANGE;
+	}
+
+	*out_data = p->out_data.rdata;
+	talloc_steal(mem_ctx, out_data->data);
+	p->out_data.rdata = data_blob_null;
+
+	talloc_free_children(p->mem_ctx);
+	return NT_STATUS_OK;
+}
+
+struct rpcint_bh_state {
+	struct pipes_struct *p;
+};
+
+static bool rpcint_bh_is_connected(struct dcerpc_binding_handle *h)
+{
+	struct rpcint_bh_state *hs = dcerpc_binding_handle_data(h,
+				     struct rpcint_bh_state);
+
+	if (!hs->p) {
+		return false;
+	}
+
+	return true;
+}
+
+struct rpcint_bh_raw_call_state {
+	DATA_BLOB in_data;
+	DATA_BLOB out_data;
+	uint32_t out_flags;
+};
+
+static struct tevent_req *rpcint_bh_raw_call_send(TALLOC_CTX *mem_ctx,
+						  struct tevent_context *ev,
+						  struct dcerpc_binding_handle *h,
+						  const struct GUID *object,
+						  uint32_t opnum,
+						  uint32_t in_flags,
+						  const uint8_t *in_data,
+						  size_t in_length)
+{
+	struct rpcint_bh_state *hs =
+		dcerpc_binding_handle_data(h,
+		struct rpcint_bh_state);
+	struct tevent_req *req;
+	struct rpcint_bh_raw_call_state *state;
+	bool ok;
+	NTSTATUS status;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct rpcint_bh_raw_call_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	state->in_data.data = discard_const_p(uint8_t, in_data);
+	state->in_data.length = in_length;
+
+	ok = rpcint_bh_is_connected(h);
+	if (!ok) {
+		tevent_req_nterror(req, NT_STATUS_INVALID_CONNECTION);
+		return tevent_req_post(req, ev);
+	}
+
+	/* TODO: allow async */
+	status = rpcint_dispatch(hs->p, state, opnum,
+				 &state->in_data,
+				 &state->out_data);
+	if (!NT_STATUS_IS_OK(status)) {
+		tevent_req_nterror(req, status);
+		return tevent_req_post(req, ev);
+	}
+
+	tevent_req_done(req);
+	return tevent_req_post(req, ev);
+}
+
+static NTSTATUS rpcint_bh_raw_call_recv(struct tevent_req *req,
+					TALLOC_CTX *mem_ctx,
+					uint8_t **out_data,
+					size_t *out_length,
+					uint32_t *out_flags)
+{
+	struct rpcint_bh_raw_call_state *state =
+		tevent_req_data(req,
+		struct rpcint_bh_raw_call_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		tevent_req_received(req);
+		return status;
+	}
+
+	*out_data = talloc_move(mem_ctx, &state->out_data.data);
+	*out_length = state->out_data.length;
+	*out_flags = 0;
+	tevent_req_received(req);
+	return NT_STATUS_OK;
+}
+
+struct rpcint_bh_disconnect_state {
+	uint8_t _dummy;
+};
+
+static struct tevent_req *rpcint_bh_disconnect_send(TALLOC_CTX *mem_ctx,
+						struct tevent_context *ev,
+						struct dcerpc_binding_handle *h)
+{
+	struct rpcint_bh_state *hs = dcerpc_binding_handle_data(h,
+				     struct rpcint_bh_state);
+	struct tevent_req *req;
+	struct rpcint_bh_disconnect_state *state;
+	bool ok;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct rpcint_bh_disconnect_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	ok = rpcint_bh_is_connected(h);
+	if (!ok) {
+		tevent_req_nterror(req, NT_STATUS_INVALID_CONNECTION);
+		return tevent_req_post(req, ev);
+	}
+
+	/*
+	 * TODO: do a real async disconnect ...
+	 *
+	 * For now the caller needs to free pipes_struct
+	 */
+	hs->p = NULL;
+
+	tevent_req_done(req);
+	return tevent_req_post(req, ev);
+}
+
+static NTSTATUS rpcint_bh_disconnect_recv(struct tevent_req *req)
+{
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		tevent_req_received(req);
+		return status;
+	}
+
+	tevent_req_received(req);
+	return NT_STATUS_OK;
+}
+
+static bool rpcint_bh_ref_alloc(struct dcerpc_binding_handle *h)
+{
+	return true;
+}
+
+static void rpcint_bh_do_ndr_print(struct dcerpc_binding_handle *h,
+				   int ndr_flags,
+				   const void *_struct_ptr,
+				   const struct ndr_interface_call *call)
+{
+	void *struct_ptr = discard_const(_struct_ptr);
+
+	if (DEBUGLEVEL < 10) {
+		return;
+	}
+
+	if (ndr_flags & NDR_IN) {
+		ndr_print_function_debug(call->ndr_print,
+					 call->name,
+					 ndr_flags,
+					 struct_ptr);
+	}
+	if (ndr_flags & NDR_OUT) {
+		ndr_print_function_debug(call->ndr_print,
+					 call->name,
+					 ndr_flags,
+					 struct_ptr);
+	}
+}
+
+static const struct dcerpc_binding_handle_ops rpcint_bh_ops = {
+	.name			= "rpcint",
+	.is_connected		= rpcint_bh_is_connected,
+	.raw_call_send		= rpcint_bh_raw_call_send,
+	.raw_call_recv		= rpcint_bh_raw_call_recv,
+	.disconnect_send	= rpcint_bh_disconnect_send,
+	.disconnect_recv	= rpcint_bh_disconnect_recv,
+
+	.ref_alloc		= rpcint_bh_ref_alloc,
+	.do_ndr_print		= rpcint_bh_do_ndr_print,
+};
+
+/* initialise a wbint binding handle */
+static struct dcerpc_binding_handle *rpcint_binding_handle(struct pipes_struct *p)
+{
+	struct dcerpc_binding_handle *h;
+	struct rpcint_bh_state *hs;
+
+	h = dcerpc_binding_handle_create(p,
+					 &rpcint_bh_ops,
+					 NULL,
+					 NULL, /* TODO */
+					 &hs,
+					 struct rpcint_bh_state,
+					 __location__);
+	if (h == NULL) {
+		return NULL;
+	}
+	hs->p = p;
+
+	return h;
+}
+
 /**
  * @brief Create a new RPC client context which uses a local dispatch function.
  *
@@ -371,6 +637,12 @@ NTSTATUS rpc_pipe_open_internal(TALLOC_CTX *mem_ctx,
 	result->max_xmit_frag = -1;
 	result->max_recv_frag = -1;
 
+	result->binding_handle = rpcint_binding_handle(result->pipes_struct);
+	if (result->binding_handle == NULL) {
+		TALLOC_FREE(result);
+		return NT_STATUS_NO_MEMORY;
+	}
+
 	*presult = result;
 	return NT_STATUS_OK;
 }