Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream

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

1 files changed, 582 insertions, 0 deletions

diff --git a/source4/librpc/rpc/dcerpc_roh_channel_out.c b/source4/librpc/rpc/dcerpc_roh_channel_out.c
new file mode 100644
index 0000000..2abafb0
--- /dev/null
+++ b/source4/librpc/rpc/dcerpc_roh_channel_out.c
@@ -0,0 +1,582 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   [MS-RPCH] - RPC over HTTP client
+
+   Copyright (C) 2013 Samuel Cabrero <samuelcabrero@kernevil.me>
+   Copyright (C) Julien Kerihuel <j.kerihuel@openchange.org> 2013
+
+   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 <tevent.h>
+#include <talloc.h>
+#include "lib/tsocket/tsocket.h"
+#include "lib/tls/tls.h"
+#include "lib/util/tevent_ntstatus.h"
+#include "lib/util/util_net.h"
+#include "libcli/resolve/resolve.h"
+#include "libcli/composite/composite.h"
+#include "auth/credentials/credentials.h"
+#include "auth/credentials/credentials_internal.h"
+#include <gen_ndr/dcerpc.h>
+#include <gen_ndr/ndr_dcerpc.h>
+
+#include "librpc/rpc/dcerpc.h"
+#include "librpc/rpc/dcerpc_roh.h"
+#include "librpc/rpc/dcerpc_proto.h"
+#include "librpc/rpc/dcerpc_util.h"
+#include "libcli/http/http.h"
+
+struct roh_request_state {
+	struct http_request	*request;
+	struct http_request	*response;
+};
+
+static void roh_send_RPC_DATA_OUT_done(struct tevent_req *subreq);
+struct tevent_req *roh_send_RPC_DATA_OUT_send(TALLOC_CTX *mem_ctx,
+					      struct loadparm_context *lp_ctx,
+					      struct tevent_context *ev,
+					      struct cli_credentials *credentials,
+					      struct roh_connection *roh,
+					      const char *rpc_server,
+					      uint32_t rpc_server_port,
+					      const char *rpc_proxy,
+					      uint8_t http_auth)
+{
+	struct tevent_req		*req;
+	struct tevent_req		*subreq;
+	struct roh_request_state	*state;
+	const char			*path;
+	char				*query;
+	char				*uri;
+
+	DEBUG(8, ("%s: Sending RPC_OUT_DATA request\n", __func__));
+
+	req = tevent_req_create(mem_ctx, &state, struct roh_request_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	state->request = talloc_zero(state, struct http_request);
+	if (tevent_req_nomem(state->request, req)) {
+		return tevent_req_post(req, ev);
+	}
+
+	/* Build URI, as specified in section 2.2.2 */
+	query = talloc_asprintf(state, "%s:%d", rpc_server, rpc_server_port);
+	if (tevent_req_nomem(query, req)) {
+		return tevent_req_post(req, ev);
+	}
+
+	/*
+	 * TODO This path changes to "/rpcwithcert/rpcproxy.dll" when using
+	 * certificates
+	 */
+	path = "/rpc/rpcproxy.dll";
+	uri = talloc_asprintf(state, "%s?%s", path, query);
+	if (tevent_req_nomem(uri, req)) {
+		tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+		return tevent_req_post(req, ev);
+	}
+	TALLOC_FREE(query);
+
+	/*
+	 * Create the HTTP channel OUT request as specified in the
+	 * section 2.1.2.1.2
+	 */
+	state->request->type = HTTP_REQ_RPC_OUT_DATA;
+	state->request->uri = uri;
+	state->request->body.length = 0;
+	state->request->body.data = NULL;
+	state->request->major = '1';
+	state->request->minor = '0';
+
+	http_add_header(state, &state->request->headers,
+			"Accept", "application/rpc");
+	http_add_header(state, &state->request->headers,
+			"User-Agent", "MSRPC");
+	http_add_header(state, &state->request->headers,
+			"Host", rpc_proxy);
+	http_add_header(state, &state->request->headers,
+			"Connection", "keep-alive");
+	http_add_header(state, &state->request->headers,
+			"Content-Length", "76");
+	http_add_header(state, &state->request->headers,
+			"Cache-Control", "no-cache");
+	http_add_header(state, &state->request->headers,
+			"Pragma", "no-cache");
+
+	subreq = http_send_auth_request_send(state,
+					ev,
+					roh->default_channel_out->http_conn,
+					state->request,
+					credentials,
+					lp_ctx,
+					http_auth);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, roh_send_RPC_DATA_OUT_done, req);
+
+	return req;
+}
+
+static void roh_send_RPC_DATA_OUT_done(struct tevent_req *subreq)
+{
+	NTSTATUS		status;
+	struct tevent_req	*req;
+
+	req = tevent_req_callback_data(subreq, struct tevent_req);
+
+	/* Receive the sent bytes to check if request has been properly sent */
+	status = http_send_auth_request_recv(subreq);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+
+	DEBUG(8, ("%s: RPC_OUT_DATA sent", __func__));
+
+	tevent_req_done(req);
+}
+
+NTSTATUS roh_send_RPC_DATA_OUT_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;
+}
+
+struct roh_send_pdu_state {
+	DATA_BLOB	buffer;
+	struct iovec	iov;
+	int		bytes_written;
+	int		sys_errno;
+};
+
+static void roh_send_CONN_A1_done(struct tevent_req *subreq);
+struct tevent_req *roh_send_CONN_A1_send(TALLOC_CTX *mem_ctx,
+					 struct tevent_context *ev,
+					 struct roh_connection *roh)
+{
+	struct tevent_req		*req;
+	struct tevent_req		*subreq;
+	struct roh_send_pdu_state	*state;
+	struct dcerpc_rts		rts;
+	struct ncacn_packet		pkt;
+	struct ndr_push			*ndr;
+	struct tstream_context          *stream = NULL;
+	struct tevent_queue             *send_queue = NULL;
+
+	DEBUG(8, ("%s: Sending CONN/A1 request\n", __func__));
+
+	req = tevent_req_create(mem_ctx, &state, struct roh_send_pdu_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	rts.Flags = RTS_FLAG_NONE;
+	rts.NumberOfCommands = 4;
+	rts.Commands = talloc_array(state, struct dcerpc_rts_cmd, 4);
+
+	/* CONN/A1: Version RTS command */
+	rts.Commands[0].CommandType = 0x00000006;
+	rts.Commands[0].Command.Version.Version = 0x00000001;
+
+	/* CONN/A1: VirtualConnectionCookie RTS command */
+	rts.Commands[1].CommandType = 0x00000003;
+	rts.Commands[1].Command.Cookie.Cookie.Cookie = roh->connection_cookie;
+
+	/* CONN/A1: OutChannelCookie RTS command */
+	rts.Commands[2].CommandType = 0x00000003;
+	rts.Commands[2].Command.Cookie.Cookie.Cookie =
+			roh->default_channel_out->channel_cookie;
+
+	/* CONN/A1: ReceiveWindowSize */
+	rts.Commands[3].CommandType = 0x00000000;
+	rts.Commands[3].Command.ReceiveWindowSize.ReceiveWindowSize = 0x40000;
+
+	pkt.rpc_vers = 5;
+	pkt.rpc_vers_minor = 0;
+	pkt.ptype = DCERPC_PKT_RTS;
+	pkt.pfc_flags = DCERPC_PFC_FLAG_LAST | DCERPC_PFC_FLAG_FIRST;
+	pkt.drep[0] = DCERPC_DREP_LE;
+	pkt.drep[1] = 0;
+	pkt.drep[2] = 0;
+	pkt.drep[3] = 0;
+	pkt.frag_length = 76;
+	pkt.auth_length = 0;
+	pkt.call_id = 0;
+	pkt.u.rts = rts;
+
+	ndr = ndr_push_init_ctx(state);
+	if (ndr == NULL) {
+		return NULL;
+	}
+	ndr->offset = 0;
+	ndr_push_ncacn_packet(ndr, NDR_SCALARS, &pkt);
+
+	state->buffer = ndr_push_blob(ndr);
+	state->iov.iov_base = (char *) state->buffer.data;
+	state->iov.iov_len = state->buffer.length;
+
+	stream = http_conn_tstream(roh->default_channel_out->http_conn);
+	send_queue = http_conn_send_queue(roh->default_channel_out->http_conn);
+
+	subreq = tstream_writev_queue_send(mem_ctx,
+					   ev,
+					   stream,
+					   send_queue,
+					   &state->iov,
+					   1);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, roh_send_CONN_A1_done, req);
+
+	return req;
+}
+
+static void roh_send_CONN_A1_done(struct tevent_req *subreq)
+{
+	NTSTATUS			status;
+	struct tevent_req		*req;
+	struct roh_send_pdu_state	*state;
+	int				sys_errno;
+
+	req = tevent_req_callback_data(subreq, struct tevent_req);
+	state = tevent_req_data(req, struct roh_send_pdu_state);
+
+	state->bytes_written = tstream_writev_queue_recv(subreq, &sys_errno);
+	state->sys_errno = sys_errno;
+	TALLOC_FREE(subreq);
+	if (state->bytes_written <= 0 && sys_errno != 0) {
+		status = map_nt_error_from_unix_common(sys_errno);
+		tevent_req_nterror(req, status);
+		return;
+	}
+	DEBUG(8, ("%s: CONN/A1 sent (%d bytes written)\n",
+		  __func__, state->bytes_written));
+
+	tevent_req_done(req);
+}
+
+NTSTATUS roh_send_CONN_A1_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;
+}
+
+struct roh_recv_response_state
+{
+	struct http_request	*response;
+};
+
+static void roh_recv_out_channel_response_done(struct tevent_req *);
+struct tevent_req *roh_recv_out_channel_response_send(TALLOC_CTX *mem_ctx,
+						      struct tevent_context *ev,
+						      struct roh_connection *roh)
+{
+	struct tevent_req		*req;
+	struct tevent_req		*subreq;
+	struct roh_recv_response_state	*state;
+
+	DEBUG(8, ("%s: Waiting for RPC_OUT_DATA response\n", __func__));
+
+	req = tevent_req_create(mem_ctx, &state, struct roh_recv_response_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	subreq = http_read_response_send(state, ev,
+					 roh->default_channel_out->http_conn,
+					 0); /* we'll get the content later */
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, roh_recv_out_channel_response_done, req);
+
+	return req;
+}
+
+static void roh_recv_out_channel_response_done(struct tevent_req *subreq)
+{
+	NTSTATUS			status;
+	struct tevent_req		*req;
+	struct roh_recv_response_state	*state;
+
+	req = tevent_req_callback_data(subreq, struct tevent_req);
+	state = tevent_req_data(req, struct roh_recv_response_state);
+	status = http_read_response_recv(subreq, state, &state->response);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+
+	DEBUG(8, ("%s: RCP_OUT_DATA response received\n", __func__));
+
+	/* TODO Map response code to nt error */
+	switch (state->response->response_code) {
+	case 200:
+		break;
+	case 401:
+		DEBUG(0, ("%s: Server response: Access denied\n", __func__));
+		tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
+		return;
+	case 503:
+		/* TODO Decode error info as specified in section 2.1.2.1.3 */
+		DEBUG(0, ("%s: Server response: RPC error\n", __func__));
+		tevent_req_nterror(req, NT_STATUS_GENERIC_NOT_MAPPED);
+		return;
+	default:
+		DEBUG(0, ("%s: Server response: Unknown error\n", __func__));
+		tevent_req_nterror(req, NT_STATUS_GENERIC_NOT_MAPPED);
+		return;
+	}
+
+	tevent_req_done(req);
+}
+
+NTSTATUS roh_recv_out_channel_response_recv(struct tevent_req *req,
+		TALLOC_CTX *mem_ctx,
+		char **response_msg)
+{
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		tevent_req_received(req);
+		return status;
+	}
+
+	tevent_req_received(req);
+	return NT_STATUS_OK;
+}
+
+struct roh_recv_pdu_state {
+	struct roh_connection	*roh;
+	uint32_t		connection_timeout;
+	uint32_t		version;
+	uint32_t		recv_window_size;
+};
+
+static void roh_recv_CONN_A3_done(struct tevent_req *subreq);
+struct tevent_req *roh_recv_CONN_A3_send(TALLOC_CTX *mem_ctx,
+					 struct tevent_context *ev,
+					 struct roh_connection *roh)
+{
+	struct tevent_req		*req;
+	struct tevent_req		*subreq;
+	struct roh_recv_pdu_state	*state;
+	struct tstream_context          *stream = NULL;
+
+	req = tevent_req_create(mem_ctx, &state, struct roh_recv_pdu_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	DEBUG(8, ("%s: Waiting for CONN/A3\n", __func__));
+
+	stream = http_conn_tstream(roh->default_channel_out->http_conn);
+
+	subreq = dcerpc_read_ncacn_packet_send(state, ev, stream);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, roh_recv_CONN_A3_done, req);
+
+	return req;
+}
+
+static void roh_recv_CONN_A3_done(struct tevent_req *subreq)
+{
+	NTSTATUS			status;
+	struct tevent_req		*req;
+	struct roh_recv_pdu_state	*state;
+	struct ncacn_packet		*pkt;
+	DATA_BLOB			buffer;
+	struct dcerpc_rts		rts;
+
+	req = tevent_req_callback_data(subreq, struct tevent_req);
+	state = tevent_req_data(req, struct roh_recv_pdu_state);
+	status = dcerpc_read_ncacn_packet_recv(subreq, state, &pkt, &buffer);
+	TALLOC_FREE(subreq);
+
+	if (tevent_req_nterror(req, status)) {
+		DEBUG(0, ("%s: Error receiving PDU\n", __func__));
+		return;
+	}
+
+	/*
+	 * Check if it is a CONN/A3 (2.2.4.4) packet and get the connection
+	 * timeout
+	 */
+	rts = pkt->u.rts;
+	if (rts.NumberOfCommands != 1) {
+		DEBUG(0, ("%s: Invalid number of commands received\n", __func__));
+		tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+		return;
+	}
+
+	if (rts.Commands[0].CommandType != ROH_CMD_TYPE_CONNECTION_TIMEOUT) {
+		DEBUG(0, ("%s: Invalid command type received\n", __func__));
+		tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+		return;
+	}
+
+	/* Extract connection timeout */
+	state->connection_timeout = rts.Commands[0].Command.ConnectionTimeout.ConnectionTimeout;
+
+	DEBUG(8, ("%s: CONN/A3 received, connection timeout is %u\n",
+		  __func__, state->connection_timeout));
+	tevent_req_done(req);
+}
+
+NTSTATUS roh_recv_CONN_A3_recv(struct tevent_req *req,
+			       unsigned int *connection_timeout)
+{
+	NTSTATUS			status;
+	struct roh_recv_pdu_state	*state;
+
+	state = tevent_req_data(req, struct roh_recv_pdu_state);
+	if (tevent_req_is_nterror(req, &status)) {
+		tevent_req_received(req);
+		return status;
+	}
+
+	*connection_timeout = state->connection_timeout;
+
+	tevent_req_received(req);
+	return NT_STATUS_OK;
+}
+
+static void roh_recv_CONN_C2_done(struct tevent_req *subreq);
+struct tevent_req *roh_recv_CONN_C2_send(TALLOC_CTX *mem_ctx,
+					 struct tevent_context *ev,
+					 struct roh_connection *roh)
+{
+	struct tevent_req		*req;
+	struct tevent_req		*subreq;
+	struct roh_recv_pdu_state	*state;
+	struct tstream_context		*stream = NULL;
+
+	req = tevent_req_create(mem_ctx, &state, struct roh_recv_pdu_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	DEBUG(8, ("%s: Waiting for CONN/C2\n", __func__));
+	stream = http_conn_tstream(roh->default_channel_out->http_conn);
+
+	subreq = dcerpc_read_ncacn_packet_send(state, ev, stream);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, roh_recv_CONN_C2_done, req);
+
+	return req;
+}
+
+static void roh_recv_CONN_C2_done(struct tevent_req *subreq)
+{
+	NTSTATUS			status;
+	struct tevent_req		*req;
+	struct roh_recv_pdu_state	*state;
+	struct ncacn_packet		*pkt;
+	DATA_BLOB			buffer;
+	struct dcerpc_rts		rts;
+
+	req = tevent_req_callback_data(subreq, struct tevent_req);
+	state = tevent_req_data(req, struct roh_recv_pdu_state);
+
+	status = dcerpc_read_ncacn_packet_recv(subreq, state, &pkt, &buffer);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		DEBUG(0, ("%s: Error receiving PDU\n", __func__));
+		return;
+	}
+
+	/*
+	 * Check if it is a CONN/C2 packet (2.2.4.9), and get the version, the
+	 * receive windows size and the connection timeout for the IN channel
+	 */
+	rts = pkt->u.rts;
+	if (rts.NumberOfCommands != 3) {
+		DEBUG(0, ("%s: Invalid number of commands received\n",
+			  __func__));
+		tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+		return;
+	}
+	if (rts.Commands[0].CommandType != ROH_CMD_TYPE_VERSION) {
+		DEBUG(0, ("%s: Invalid command type received\n", __func__));
+		tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+		return;
+	}
+	if (rts.Commands[1].CommandType != ROH_CMD_TYPE_RECV_WINDOWS_SIZE) {
+		DEBUG(0, ("%s: Invalid command type received\n", __func__));
+		tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+		return;
+	}
+	if (rts.Commands[2].CommandType != ROH_CMD_TYPE_CONNECTION_TIMEOUT) {
+		DEBUG(0, ("%s: Invalid command type received\n", __func__));
+		tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
+		return;
+	}
+
+	/* Extract data */
+	state->version = rts.Commands[0].Command.Version.Version;
+	state->recv_window_size = rts.Commands[1].Command.ReceiveWindowSize.ReceiveWindowSize;
+	state->connection_timeout = rts.Commands[2].Command.ConnectionTimeout.ConnectionTimeout;
+
+	DEBUG(8, ("%s: CONN/C2 received, version is %u, receive windows size is %u, connection timeout is %u\n",
+		  __func__, state->version, state->recv_window_size,
+		  state->connection_timeout));
+	tevent_req_done(req);
+}
+
+NTSTATUS roh_recv_CONN_C2_recv(struct tevent_req *req,
+			       unsigned int *version,
+			       unsigned int *recv_window_size,
+			       unsigned int *connection_timeout)
+{
+	NTSTATUS			status;
+	struct roh_recv_pdu_state	*state;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		tevent_req_received(req);
+		return status;
+	}
+
+	state =  tevent_req_data(req, struct roh_recv_pdu_state);
+	*version = state->version;
+	*recv_window_size = state->recv_window_size;
+	*connection_timeout = state->connection_timeout;
+
+	tevent_req_received(req);
+	return NT_STATUS_OK;
+}