Add the named pipe rpc client transport

1 files changed, 329 insertions, 0 deletions

diff --git a/source3/rpc_client/rpc_transport_np.c b/source3/rpc_client/rpc_transport_np.c
new file mode 100644
index 0000000000..e8a333e509
--- /dev/null
+++ b/source3/rpc_client/rpc_transport_np.c
@@ -0,0 +1,329 @@
+/*
+ *  Unix SMB/CIFS implementation.
+ *  RPC client transport over named pipes
+ *  Copyright (C) Volker Lendecke 2009
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 3 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "includes.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_RPC_CLI
+
+struct rpc_transport_np_state {
+	struct cli_state *cli;
+	const char *pipe_name;
+	uint16_t fnum;
+};
+
+static int rpc_transport_np_state_destructor(struct rpc_transport_np_state *s)
+{
+	bool ret;
+	ret = cli_close(s->cli, s->fnum);
+	if (!ret) {
+		DEBUG(1, ("rpc_transport_np_state_destructor: cli_close "
+			  "failed on pipe %s. Error was %s\n", s->pipe_name,
+			  cli_errstr(s->cli)));
+	}
+	DEBUG(10, ("rpc_pipe_destructor: closed %s\n", s->pipe_name));
+	/*
+	 * We can't do much on failure
+	 */
+	return 0;
+}
+
+struct rpc_np_write_state {
+	size_t size;
+	size_t written;
+};
+
+static void rpc_np_write_done(struct async_req *subreq);
+
+static struct async_req *rpc_np_write_send(TALLOC_CTX *mem_ctx,
+					   struct event_context *ev,
+					   const uint8_t *data, size_t size,
+					   void *priv)
+{
+	struct rpc_transport_np_state *np_transport = talloc_get_type_abort(
+		priv, struct rpc_transport_np_state);
+	struct async_req *result, *subreq;
+	struct rpc_np_write_state *state;
+
+	if (!async_req_setup(mem_ctx, &result, &state,
+			     struct rpc_np_write_state)) {
+		return NULL;
+	}
+	state->size = size;
+
+	subreq = cli_write_andx_send(mem_ctx, ev, np_transport->cli,
+				     np_transport->fnum,
+				     8, /* 8 means message mode. */
+				     data, 0, size);
+	if (subreq == NULL) {
+		goto fail;
+	}
+	subreq->async.fn = rpc_np_write_done;
+	subreq->async.priv = result;
+	return result;
+ fail:
+	TALLOC_FREE(result);
+	return NULL;
+}
+
+static void rpc_np_write_done(struct async_req *subreq)
+{
+	struct async_req *req = talloc_get_type_abort(
+		subreq->async.priv, struct async_req);
+	struct rpc_np_write_state *state = talloc_get_type_abort(
+		req->private_data, struct rpc_np_write_state);
+	NTSTATUS status;
+
+	status = cli_write_andx_recv(subreq, &state->written);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		async_req_error(req, status);
+		return;
+	}
+	async_req_done(req);
+}
+
+static NTSTATUS rpc_np_write_recv(struct async_req *req, ssize_t *pwritten)
+{
+	struct rpc_np_write_state *state = talloc_get_type_abort(
+		req->private_data, struct rpc_np_write_state);
+	NTSTATUS status;
+
+	if (async_req_is_error(req, &status)) {
+		return status;
+	}
+	*pwritten = state->written;
+	return NT_STATUS_OK;
+}
+
+struct rpc_np_read_state {
+	uint8_t *data;
+	size_t size;
+	ssize_t received;
+};
+
+static void rpc_np_read_done(struct async_req *subreq);
+
+static struct async_req *rpc_np_read_send(TALLOC_CTX *mem_ctx,
+					  struct event_context *ev,
+					  uint8_t *data, size_t size,
+					  void *priv)
+{
+	struct rpc_transport_np_state *np_transport = talloc_get_type_abort(
+		priv, struct rpc_transport_np_state);
+	struct async_req *result, *subreq;
+	struct rpc_np_read_state *state;
+
+	if (!async_req_setup(mem_ctx, &result, &state,
+			     struct rpc_np_read_state)) {
+		return NULL;
+	}
+	state->data = data;
+	state->size = size;
+
+	subreq = cli_read_andx_send(mem_ctx, ev, np_transport->cli,
+				    np_transport->fnum, 0, size);
+	if (subreq == NULL) {
+		goto fail;
+	}
+	subreq->async.fn = rpc_np_read_done;
+	subreq->async.priv = result;
+	return result;
+ fail:
+	TALLOC_FREE(result);
+	return NULL;
+}
+
+static void rpc_np_read_done(struct async_req *subreq)
+{
+	struct async_req *req = talloc_get_type_abort(
+		subreq->async.priv, struct async_req);
+	struct rpc_np_read_state *state = talloc_get_type_abort(
+		req->private_data, struct rpc_np_read_state);
+	NTSTATUS status;
+	uint8_t *rcvbuf;
+
+	status = cli_read_andx_recv(subreq, &state->received, &rcvbuf);
+	/*
+	 * We can't TALLOC_FREE(subreq) as usual here, as rcvbuf still is a
+	 * child of that.
+	 */
+	if (NT_STATUS_EQUAL(status, NT_STATUS_BUFFER_TOO_SMALL)) {
+		status = NT_STATUS_OK;
+	}
+	if (!NT_STATUS_IS_OK(status)) {
+		TALLOC_FREE(subreq);
+		async_req_error(req, status);
+		return;
+	}
+
+	if (state->received > state->size) {
+		TALLOC_FREE(subreq);
+		async_req_error(req, NT_STATUS_INVALID_NETWORK_RESPONSE);
+		return;
+	}
+
+	memcpy(state->data, rcvbuf, state->received);
+	async_req_done(req);
+}
+
+static NTSTATUS rpc_np_read_recv(struct async_req *req, ssize_t *preceived)
+{
+	struct rpc_np_read_state *state = talloc_get_type_abort(
+		req->private_data, struct rpc_np_read_state);
+	NTSTATUS status;
+
+	if (async_req_is_error(req, &status)) {
+		return status;
+	}
+	*preceived = state->received;
+	return NT_STATUS_OK;
+}
+
+struct rpc_np_trans_state {
+	uint16_t setup[2];
+	uint8_t *rdata;
+	uint32_t rdata_len;
+};
+
+static void rpc_np_trans_done(struct async_req *subreq);
+
+static struct async_req *rpc_np_trans_send(TALLOC_CTX *mem_ctx,
+					   struct event_context *ev,
+					   uint8_t *data, size_t data_len,
+					   uint32_t max_rdata_len,
+					   void *priv)
+{
+	struct rpc_transport_np_state *np_transport = talloc_get_type_abort(
+		priv, struct rpc_transport_np_state);
+	struct async_req *result, *subreq;
+	struct rpc_np_trans_state *state;
+
+	if (!async_req_setup(mem_ctx, &result, &state,
+			     struct rpc_np_trans_state)) {
+		return NULL;
+	}
+
+	SSVAL(state->setup+0, 0, TRANSACT_DCERPCCMD);
+	SSVAL(state->setup+1, 0, np_transport->fnum);
+
+	subreq = cli_trans_send(
+		state, ev, np_transport->cli, SMBtrans,
+		"\\PIPE\\", 0, 0, 0, state->setup, 2, 0,
+		NULL, 0, 0, data, data_len, max_rdata_len);
+	if (subreq == NULL) {
+		goto fail;
+	}
+	subreq->async.fn = rpc_np_trans_done;
+	subreq->async.priv = result;
+	return result;
+
+ fail:
+	TALLOC_FREE(result);
+	return NULL;
+}
+
+static void rpc_np_trans_done(struct async_req *subreq)
+{
+	struct async_req *req = talloc_get_type_abort(
+		subreq->async.priv, struct async_req);
+	struct rpc_np_trans_state *state = talloc_get_type_abort(
+		req->private_data, struct rpc_np_trans_state);
+	NTSTATUS status;
+
+	status = cli_trans_recv(subreq, state, NULL, NULL, NULL, NULL,
+				&state->rdata, &state->rdata_len);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		async_req_error(req, status);
+		return;
+	}
+	async_req_done(req);
+}
+
+static NTSTATUS rpc_np_trans_recv(struct async_req *req, TALLOC_CTX *mem_ctx,
+				  uint8_t **prdata, uint32_t *prdata_len)
+{
+	struct rpc_np_trans_state *state = talloc_get_type_abort(
+		req->private_data, struct rpc_np_trans_state);
+	NTSTATUS status;
+
+	if (async_req_is_error(req, &status)) {
+		return status;
+	}
+	*prdata = talloc_move(mem_ctx, &state->rdata);
+	*prdata_len = state->rdata_len;
+	return NT_STATUS_OK;
+}
+
+NTSTATUS rpc_transport_np_init(TALLOC_CTX *mem_ctx, struct cli_state *cli,
+			       const struct ndr_syntax_id *abstract_syntax,
+			       struct rpc_cli_transport **presult)
+{
+	struct rpc_cli_transport *result;
+	struct rpc_transport_np_state *state;
+	int fnum;
+
+	result = talloc(mem_ctx, struct rpc_cli_transport);
+	if (result == NULL) {
+		return NT_STATUS_NO_MEMORY;
+	}
+	state = talloc(result, struct rpc_transport_np_state);
+	if (state == NULL) {
+		TALLOC_FREE(result);
+		return NT_STATUS_NO_MEMORY;
+	}
+	result->priv = state;
+
+	state->cli = cli;
+	state->pipe_name = cli_get_pipe_name_from_iface(
+		state, abstract_syntax);
+
+	fnum = cli_nt_create(cli, state->pipe_name, DESIRED_ACCESS_PIPE);
+	if (fnum == -1) {
+		DEBUG(3,("rpc_pipe_open_np: cli_nt_create failed on pipe %s "
+			 "to machine %s.  Error was %s\n", state->pipe_name,
+			 cli->desthost, cli_errstr(cli)));
+		TALLOC_FREE(result);
+		return cli_get_nt_error(cli);
+	}
+	state->fnum = fnum;
+	talloc_set_destructor(state, rpc_transport_np_state_destructor);
+
+	result->write_send = rpc_np_write_send;
+	result->write_recv = rpc_np_write_recv;
+	result->read_send = rpc_np_read_send;
+	result->read_recv = rpc_np_read_recv;
+	result->trans_send = rpc_np_trans_send;
+	result->trans_recv = rpc_np_trans_recv;
+
+	*presult = result;
+	return NT_STATUS_OK;
+}
+
+struct cli_state *rpc_pipe_np_smb_conn(struct rpc_pipe_client *p)
+{
+	struct rpc_transport_np_state *state = talloc_get_type(
+		p->transport->priv, struct rpc_transport_np_state);
+
+	if (state == NULL) {
+		return NULL;
+	}
+	return state->cli;
+}