-/*
+/*
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"
-/****************************************************************************
- Start a message sequence.
-****************************************************************************/
+struct cli_message_start_state {
+ uint16_t grp;
+};
+
+static void cli_message_start_done(struct tevent_req *subreq);
-int cli_message_start_build(struct cli_state *cli, const char *host, const char *username)
+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)
{
- char *p;
+ 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, true)) {
+ goto fail;
+ }
+ if (!convert_string_talloc(talloc_tos(), CH_UNIX, CH_DOS,
+ host, strlen(host)+1,
+ &htmp, &hlen, true)) {
+ goto fail;
+ }
- /* construct a SMBsendstrt command */
- memset(cli->outbuf,'\0',smb_size);
- cli_set_message(cli->outbuf,0,0,True);
- SCVAL(cli->outbuf,smb_com,SMBsendstrt);
- SSVAL(cli->outbuf,smb_tid,cli->cnum);
- cli_setup_packet(cli);
+ bytes = talloc_array(state, uint8_t, ulen+hlen+2);
+ if (bytes == NULL) {
+ goto fail;
+ }
+ p = bytes;
- p = smb_buf(cli->outbuf);
*p++ = 4;
- p += clistr_push(cli, p, username,
- cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_ASCII|STR_TERMINATE);
+ memcpy(p, utmp, ulen);
*p++ = 4;
- p += clistr_push(cli, p, host,
- cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_ASCII|STR_TERMINATE);
+ memcpy(p, htmp, hlen);
+ TALLOC_FREE(htmp);
+ TALLOC_FREE(utmp);
+
+ subreq = cli_smb_send(state, ev, cli, SMBsendstrt, 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);
+}
- cli_setup_bcc(cli, p);
+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, 0, &wct, &vwv, NULL, NULL);
+ 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;
+ }
+ TALLOC_FREE(subreq);
+ tevent_req_done(req);
+}
- return(PTR_DIFF(p, cli->outbuf));
+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;
}
-bool cli_message_start(struct cli_state *cli, const char *host, const char *username,
- int *grp)
+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)
{
- cli_message_start_build(cli, host, username);
- cli_send_smb(cli);
+ 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;
+ }
- if (!cli_receive_smb(cli)) {
- return False;
+ SSVAL(&state->vwv, 0, grp);
+
+ if (convert_string_talloc(talloc_tos(), CH_UNIX, CH_DOS, msg, msglen,
+ &tmp, &tmplen, true)) {
+ msg = tmp;
+ msglen = tmplen;
+ } else {
+ DEBUG(3, ("Conversion failed, sending message in UNIX "
+ "charset\n"));
+ tmp = NULL;
}
- if (cli_is_error(cli)) return False;
+ 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, 0); /* pad */
+ SSVAL(bytes, 1, msglen);
+ memcpy(bytes+3, msg, msglen);
+ TALLOC_FREE(tmp);
+
+ subreq = cli_smb_send(state, ev, cli, SMBsendtxt, 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;
+}
- *grp = SVAL(cli->inbuf,smb_vwv0);
+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, 0, NULL, NULL, NULL, NULL);
+ TALLOC_FREE(subreq);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return;
+ }
+ tevent_req_done(req);
+}
- return True;
+static NTSTATUS cli_message_text_recv(struct tevent_req *req)
+{
+ return tevent_req_simple_recv_ntstatus(req);
}
-/****************************************************************************
- Send a message
-****************************************************************************/
+struct cli_message_end_state {
+ uint16_t vwv;
+};
-int cli_message_text_build(struct cli_state *cli, const char *msg, int len, int grp)
+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)
{
- char *msgdos;
- size_t lendos;
- char *p;
-
- memset(cli->outbuf,'\0',smb_size);
- cli_set_message(cli->outbuf,1,0,True);
- SCVAL(cli->outbuf,smb_com,SMBsendtxt);
- SSVAL(cli->outbuf,smb_tid,cli->cnum);
- cli_setup_packet(cli);
-
- SSVAL(cli->outbuf,smb_vwv0,grp);
-
- p = smb_buf(cli->outbuf);
- *p++ = 1;
-
- if (!convert_string_talloc(talloc_tos(), CH_UNIX, CH_DOS, msg, len,
- (void **)(void *)&msgdos, &lendos, True) || !msgdos) {
- DEBUG(3,("Conversion failed, sending message in UNIX charset\n"));
- SSVAL(p, 0, len); p += 2;
- if (len > cli->bufsize - PTR_DIFF(p,cli->outbuf)) {
- return -1;
- }
- memcpy(p, msg, len);
- p += len;
- } else {
- SSVAL(p, 0, lendos); p += 2;
- if (lendos > cli->bufsize - PTR_DIFF(p,cli->outbuf)) {
- return -1;
- }
- memcpy(p, msgdos, lendos);
- p += lendos;
- TALLOC_FREE(msgdos);
+ 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;
}
- cli_setup_bcc(cli, p);
+ SSVAL(&state->vwv, 0, grp);
+
+ subreq = cli_smb_send(state, ev, cli, SMBsendend, 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;
+}
- return(PTR_DIFF(p, cli->outbuf));
+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, 0, NULL, NULL, NULL, NULL);
+ TALLOC_FREE(subreq);
+ if (!NT_STATUS_IS_OK(status)) {
+ tevent_req_nterror(req, status);
+ return;
+ }
+ tevent_req_done(req);
}
-bool cli_message_text(struct cli_state *cli, const char *msg, int len, int grp)
+static NTSTATUS cli_message_end_recv(struct tevent_req *req)
{
- cli_message_text_build(cli, msg, len, grp);
+ return tevent_req_simple_recv_ntstatus(req);
+}
- cli_send_smb(cli);
+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;
- if (!cli_receive_smb(cli)) {
- return False;
+ 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;
+}
- if (cli_is_error(cli)) return False;
+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;
+ }
- return True;
-}
+ thistime = MIN(127, strlen(state->message));
-/****************************************************************************
- End a 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);
+}
-int cli_message_end_build(struct cli_state *cli, int grp)
+static void cli_message_sent(struct tevent_req *subreq)
{
- char *p;
+ 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;
+ }
- memset(cli->outbuf,'\0',smb_size);
- cli_set_message(cli->outbuf,1,0,True);
- SCVAL(cli->outbuf,smb_com,SMBsendend);
- SSVAL(cli->outbuf,smb_tid,cli->cnum);
+ 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;
+ }
- SSVAL(cli->outbuf,smb_vwv0,grp);
+ left = strlen(state->message) - state->sent;
+ thistime = MIN(127, left);
- cli_setup_packet(cli);
+ 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);
+}
- p = smb_buf(cli->outbuf);
+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);
+}
- return(PTR_DIFF(p, cli->outbuf));
+NTSTATUS cli_message_recv(struct tevent_req *req)
+{
+ return tevent_req_simple_recv_ntstatus(req);
}
-bool cli_message_end(struct cli_state *cli, int grp)
+NTSTATUS cli_message(struct cli_state *cli, const char *host,
+ const char *username, const char *message)
{
- cli_message_end_build(cli, grp);
+ TALLOC_CTX *frame = talloc_stackframe();
+ struct event_context *ev;
+ struct tevent_req *req;
+ NTSTATUS status = NT_STATUS_OK;
+
+ if (cli_has_async_calls(cli)) {
+ /*
+ * Can't use sync call while an async call is in flight
+ */
+ status = NT_STATUS_INVALID_PARAMETER;
+ goto fail;
+ }
- cli_send_smb(cli);
+ ev = event_context_init(frame);
+ if (ev == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto fail;
+ }
- if (!cli_receive_smb(cli)) {
- return False;
+ req = cli_message_send(frame, ev, cli, host, username, message);
+ if (req == NULL) {
+ status = NT_STATUS_NO_MEMORY;
+ goto fail;
}
- if (cli_is_error(cli)) return False;
+ if (!tevent_req_poll(req, ev)) {
+ status = map_nt_error_from_unix(errno);
+ goto fail;
+ }
- return True;
+ status = cli_message_recv(req);
+ fail:
+ TALLOC_FREE(frame);
+ return status;
}
git.samba.org / abartlet / samba.git / .git / commitdiff