summaryrefslogtreecommitdiffstats
path: root/source3/libsmb/climessage.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--source3/libsmb/climessage.c411
1 files changed, 411 insertions, 0 deletions
diff --git a/source3/libsmb/climessage.c b/source3/libsmb/climessage.c
new file mode 100644
index 0000000..8563615
--- /dev/null
+++ b/source3/libsmb/climessage.c
@@ -0,0 +1,411 @@
+/*
+ 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 (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 (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 (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 (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 (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 (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;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 12:13:11 +0000