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, 418 insertions, 0 deletions

diff --git a/source3/libsmb/climessage.c b/source3/libsmb/climessage.c
new file mode 100644
index 0000000..fd21681
--- /dev/null
+++ b/source3/libsmb/climessage.c
@@ -0,0 +1,418 @@
+/*
+   Unix SMB/CIFS implementation.
+   client message handling routines
+   Copyright (C) Andrew Tridgell 1994-1998
+
+   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 "async_smb.h"
+#include "libsmb/libsmb.h"
+#include "../libcli/smb/smbXcli_base.h"
+
+struct cli_message_start_state {
+	uint16_t grp;
+};
+
+static void cli_message_start_done(struct tevent_req *subreq);
+
+static struct tevent_req *cli_message_start_send(TALLOC_CTX *mem_ctx,
+						 struct tevent_context *ev,
+						 struct cli_state *cli,
+						 const char *host,
+						 const char *username)
+{
+	struct tevent_req *req, *subreq;
+	struct cli_message_start_state *state;
+	char *htmp = NULL;
+	char *utmp = NULL;
+	size_t hlen, ulen;
+	uint8_t *bytes, *p;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct cli_message_start_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	if (!convert_string_talloc(talloc_tos(), CH_UNIX, CH_DOS,
+				   username, strlen(username)+1,
+				   &utmp, &ulen)) {
+		goto fail;
+	}
+	if (!convert_string_talloc(talloc_tos(), CH_UNIX, CH_DOS,
+				   host, strlen(host)+1,
+				   &htmp, &hlen)) {
+		goto fail;
+	}
+
+	bytes = talloc_array(state, uint8_t, ulen+hlen+2);
+	if (bytes == NULL) {
+		goto fail;
+	}
+	p = bytes;
+
+	*p++ = 4;
+	memcpy(p, utmp, ulen);
+	p += ulen;
+	*p++ = 4;
+	memcpy(p, htmp, hlen);
+	TALLOC_FREE(htmp);
+	TALLOC_FREE(utmp);
+
+	subreq = cli_smb_send(state, ev, cli, SMBsendstrt, 0, 0, 0, NULL,
+			      talloc_get_size(bytes), bytes);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, cli_message_start_done, req);
+	return req;
+fail:
+	TALLOC_FREE(htmp);
+	TALLOC_FREE(utmp);
+	tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+	return tevent_req_post(req, ev);
+}
+
+static void cli_message_start_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct cli_message_start_state *state = tevent_req_data(
+		req, struct cli_message_start_state);
+	NTSTATUS status;
+	uint8_t wct;
+	uint16_t *vwv;
+
+	status = cli_smb_recv(subreq, state, NULL, 0, &wct, &vwv,
+			      NULL, NULL);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		TALLOC_FREE(subreq);
+		tevent_req_nterror(req, status);
+		return;
+	}
+	if (wct >= 1) {
+		state->grp = SVAL(vwv+0, 0);
+	} else {
+		state->grp = 0;
+	}
+	tevent_req_done(req);
+}
+
+static NTSTATUS cli_message_start_recv(struct tevent_req *req,
+				       uint16_t *pgrp)
+{
+	struct cli_message_start_state *state = tevent_req_data(
+		req, struct cli_message_start_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		return status;
+	}
+	*pgrp = state->grp;
+	return NT_STATUS_OK;
+}
+
+struct cli_message_text_state {
+	uint16_t vwv;
+};
+
+static void cli_message_text_done(struct tevent_req *subreq);
+
+static struct tevent_req *cli_message_text_send(TALLOC_CTX *mem_ctx,
+						struct tevent_context *ev,
+						struct cli_state *cli,
+						uint16_t grp,
+						const char *msg,
+						int msglen)
+{
+	struct tevent_req *req, *subreq;
+	struct cli_message_text_state *state;
+	char *tmp;
+	size_t tmplen;
+	uint8_t *bytes;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct cli_message_text_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	SSVAL(&state->vwv, 0, grp);
+
+	if (convert_string_talloc(talloc_tos(), CH_UNIX, CH_DOS, msg, msglen,
+				  &tmp, &tmplen)) {
+		msg = tmp;
+		msglen = tmplen;
+	} else {
+		DEBUG(3, ("Conversion failed, sending message in UNIX "
+			  "charset\n"));
+		tmp = NULL;
+	}
+
+	bytes = talloc_array(state, uint8_t, msglen+3);
+	if (tevent_req_nomem(bytes, req)) {
+		TALLOC_FREE(tmp);
+		return tevent_req_post(req, ev);
+	}
+	SCVAL(bytes, 0, 1);	/* pad */
+	SSVAL(bytes+1, 0, msglen);
+	memcpy(bytes+3, msg, msglen);
+	TALLOC_FREE(tmp);
+
+	subreq = cli_smb_send(state, ev, cli, SMBsendtxt, 0, 0, 1, &state->vwv,
+			      talloc_get_size(bytes), bytes);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, cli_message_text_done, req);
+	return req;
+}
+
+static void cli_message_text_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	NTSTATUS status;
+
+	status = cli_smb_recv(subreq, NULL, NULL, 0, NULL, NULL, NULL, NULL);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		tevent_req_nterror(req, status);
+		return;
+	}
+	tevent_req_done(req);
+}
+
+static NTSTATUS cli_message_text_recv(struct tevent_req *req)
+{
+	return tevent_req_simple_recv_ntstatus(req);
+}
+
+struct cli_message_end_state {
+	uint16_t vwv;
+};
+
+static void cli_message_end_done(struct tevent_req *subreq);
+
+static struct tevent_req *cli_message_end_send(TALLOC_CTX *mem_ctx,
+						struct tevent_context *ev,
+						struct cli_state *cli,
+						uint16_t grp)
+{
+	struct tevent_req *req, *subreq;
+	struct cli_message_end_state *state;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct cli_message_end_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	SSVAL(&state->vwv, 0, grp);
+
+	subreq = cli_smb_send(state, ev, cli, SMBsendend, 0, 0, 1, &state->vwv,
+			      0, NULL);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, cli_message_end_done, req);
+	return req;
+}
+
+static void cli_message_end_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	NTSTATUS status;
+
+	status = cli_smb_recv(subreq, NULL, NULL, 0, NULL, NULL, NULL, NULL);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		tevent_req_nterror(req, status);
+		return;
+	}
+	tevent_req_done(req);
+}
+
+static NTSTATUS cli_message_end_recv(struct tevent_req *req)
+{
+	return tevent_req_simple_recv_ntstatus(req);
+}
+
+struct cli_message_state {
+	struct tevent_context *ev;
+	struct cli_state *cli;
+	size_t sent;
+	const char *message;
+	uint16_t grp;
+};
+
+static void cli_message_started(struct tevent_req *subreq);
+static void cli_message_sent(struct tevent_req *subreq);
+static void cli_message_done(struct tevent_req *subreq);
+
+struct tevent_req *cli_message_send(TALLOC_CTX *mem_ctx,
+				    struct tevent_context *ev,
+				    struct cli_state *cli,
+				    const char *host, const char *username,
+				    const char *message)
+{
+	struct tevent_req *req, *subreq;
+	struct cli_message_state *state;
+
+	req = tevent_req_create(mem_ctx, &state, struct cli_message_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	state->ev = ev;
+	state->cli = cli;
+	state->sent = 0;
+	state->message = message;
+
+	subreq = cli_message_start_send(state, ev, cli, host, username);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, cli_message_started, req);
+	return req;
+}
+
+static void cli_message_started(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct cli_message_state *state = tevent_req_data(
+		req, struct cli_message_state);
+	NTSTATUS status;
+	size_t thistime;
+
+	status = cli_message_start_recv(subreq, &state->grp);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		tevent_req_nterror(req, status);
+		return;
+	}
+
+	thistime = MIN(127, strlen(state->message));
+
+	subreq = cli_message_text_send(state, state->ev, state->cli,
+				       state->grp, state->message, thistime);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	state->sent += thistime;
+	tevent_req_set_callback(subreq, cli_message_sent, req);
+}
+
+static void cli_message_sent(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct cli_message_state *state = tevent_req_data(
+		req, struct cli_message_state);
+	NTSTATUS status;
+	size_t left, thistime;
+
+	status = cli_message_text_recv(subreq);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		tevent_req_nterror(req, status);
+		return;
+	}
+
+	if (state->sent >= strlen(state->message)) {
+		subreq = cli_message_end_send(state, state->ev, state->cli,
+					      state->grp);
+		if (tevent_req_nomem(subreq, req)) {
+			return;
+		}
+		tevent_req_set_callback(subreq, cli_message_done, req);
+		return;
+	}
+
+	left = strlen(state->message) - state->sent;
+	thistime = MIN(127, left);
+
+	subreq = cli_message_text_send(state, state->ev, state->cli,
+				       state->grp,
+				       state->message + state->sent,
+				       thistime);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	state->sent += thistime;
+	tevent_req_set_callback(subreq, cli_message_sent, req);
+}
+
+static void cli_message_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	NTSTATUS status;
+
+	status = cli_message_end_recv(subreq);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		tevent_req_nterror(req, status);
+		return;
+	}
+	tevent_req_done(req);
+}
+
+NTSTATUS cli_message_recv(struct tevent_req *req)
+{
+	return tevent_req_simple_recv_ntstatus(req);
+}
+
+NTSTATUS cli_message(struct cli_state *cli, const char *host,
+		     const char *username, const char *message)
+{
+	TALLOC_CTX *frame = talloc_stackframe();
+	struct tevent_context *ev;
+	struct tevent_req *req;
+	NTSTATUS status = NT_STATUS_OK;
+
+	if (smbXcli_conn_has_async_calls(cli->conn)) {
+		/*
+		 * Can't use sync call while an async call is in flight
+		 */
+		status = NT_STATUS_INVALID_PARAMETER;
+		goto fail;
+	}
+
+	ev = samba_tevent_context_init(frame);
+	if (ev == NULL) {
+		status = NT_STATUS_NO_MEMORY;
+		goto fail;
+	}
+
+	req = cli_message_send(frame, ev, cli, host, username, message);
+	if (req == NULL) {
+		status = NT_STATUS_NO_MEMORY;
+		goto fail;
+	}
+
+	if (!tevent_req_poll_ntstatus(req, ev, &status)) {
+		goto fail;
+	}
+
+	status = cli_message_recv(req);
+ fail:
+	TALLOC_FREE(frame);
+	return status;
+}