Adding upstream version 2:4.20.0+dfsg.upstream/2%4.20.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 179 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 0000000..21266c3
--- /dev/null
+++ b/source3/rpc_client/rpc_transport_np.c
@@ -0,0 +1,179 @@
+/*
+ *  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"
+#include "../lib/util/tevent_ntstatus.h"
+#include "librpc/rpc/dcerpc_util.h"
+#include "rpc_client/rpc_transport.h"
+#include "librpc/ndr/ndr_table.h"
+#include "libcli/smb/smbXcli_base.h"
+#include "libcli/smb/tstream_smbXcli_np.h"
+#include "client.h"
+
+#undef DBGC_CLASS
+#define DBGC_CLASS DBGC_RPC_CLI
+
+struct rpc_transport_np_init_state {
+	struct rpc_cli_transport *transport;
+	int retries;
+	struct tevent_context *ev;
+	struct smbXcli_conn *conn;
+	int timeout;
+	struct timeval abs_timeout;
+	const char *pipe_name;
+	struct smbXcli_session *session;
+	struct smbXcli_tcon *tcon;
+	uint16_t pid;
+};
+
+static void rpc_transport_np_init_pipe_open(struct tevent_req *subreq);
+
+struct tevent_req *rpc_transport_np_init_send(TALLOC_CTX *mem_ctx,
+					      struct tevent_context *ev,
+					      struct cli_state *cli,
+					      const struct ndr_interface_table *table)
+{
+	struct tevent_req *req;
+	struct rpc_transport_np_init_state *state;
+	struct tevent_req *subreq;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct rpc_transport_np_init_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	if (smbXcli_conn_protocol(cli->conn) >= PROTOCOL_SMB2_02) {
+		state->tcon = cli->smb2.tcon;
+		state->session = cli->smb2.session;
+	} else {
+		state->tcon = cli->smb1.tcon;
+		state->session = cli->smb1.session;
+		state->pid = cli->smb1.pid;
+	}
+
+	state->ev = ev;
+	state->conn = cli->conn;
+	state->timeout = cli->timeout;
+	state->abs_timeout = timeval_current_ofs_msec(cli->timeout);
+	state->pipe_name = dcerpc_default_transport_endpoint(state, NCACN_NP,
+							     table);
+	if (tevent_req_nomem(state->pipe_name, req)) {
+		return tevent_req_post(req, ev);
+	}
+
+	while (state->pipe_name[0] == '\\') {
+		state->pipe_name++;
+	}
+
+	subreq = tstream_smbXcli_np_open_send(state, ev, state->conn,
+					      state->session, state->tcon,
+					      state->pid, state->timeout,
+					      state->pipe_name);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, rpc_transport_np_init_pipe_open, req);
+
+	return req;
+}
+
+static void rpc_transport_np_init_pipe_open_retry(struct tevent_context *ev,
+						  struct tevent_timer *te,
+						  struct timeval t,
+						  void *priv_data)
+{
+	struct tevent_req *subreq;
+	struct tevent_req *req = talloc_get_type(priv_data, struct tevent_req);
+	struct rpc_transport_np_init_state *state = tevent_req_data(
+		req, struct rpc_transport_np_init_state);
+
+	subreq = tstream_smbXcli_np_open_send(state, ev,
+					      state->conn,
+					      state->session,
+					      state->tcon,
+					      state->pid,
+					      state->timeout,
+					      state->pipe_name);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, rpc_transport_np_init_pipe_open, req);
+	state->retries++;
+}
+
+static void rpc_transport_np_init_pipe_open(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct rpc_transport_np_init_state *state = tevent_req_data(
+		req, struct rpc_transport_np_init_state);
+	NTSTATUS status;
+	struct tstream_context *stream;
+
+	status = tstream_smbXcli_np_open_recv(subreq, state, &stream);
+	TALLOC_FREE(subreq);
+	if (NT_STATUS_EQUAL(status, NT_STATUS_PIPE_NOT_AVAILABLE)
+				&& (!timeval_expired(&state->abs_timeout))) {
+		struct tevent_timer *te;
+		/*
+		 * Retry on STATUS_PIPE_NOT_AVAILABLE, Windows starts some
+		 * servers (FssagentRpc) on demand.
+		 */
+		DEBUG(2, ("RPC pipe %s not available, retry %d\n",
+			  state->pipe_name, state->retries));
+		te = tevent_add_timer(state->ev, state,
+				 timeval_current_ofs_msec(100 * state->retries),
+				 rpc_transport_np_init_pipe_open_retry, req);
+		if (tevent_req_nomem(te, req)) {
+			DEBUG(2, ("Failed to create asynchronous "
+					"tevent_timer\n"));
+		}
+		return;
+	}
+
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+
+	status = rpc_transport_tstream_init(state,
+					    &stream,
+					    &state->transport);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+
+	tevent_req_done(req);
+}
+
+NTSTATUS rpc_transport_np_init_recv(struct tevent_req *req,
+				    TALLOC_CTX *mem_ctx,
+				    struct rpc_cli_transport **presult)
+{
+	struct rpc_transport_np_init_state *state = tevent_req_data(
+		req, struct rpc_transport_np_init_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		return status;
+	}
+
+	*presult = talloc_move(mem_ctx, &state->transport);
+	return NT_STATUS_OK;
+}