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https://github.com/samba-team/samba.git
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bb869741dd
This patch is the first iteration of an inside-out conversion to cleanup
functions in charcnv.c returning size_t == -1 to indicate failure.
(This used to be commit 59124382d2)
163 lines
4.0 KiB
C
163 lines
4.0 KiB
C
/*
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Unix SMB/CIFS implementation.
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client message handling routines
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Copyright (C) Andrew Tridgell 1994-1998
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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/****************************************************************************
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Start a message sequence.
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****************************************************************************/
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int cli_message_start_build(struct cli_state *cli, const char *host, const char *username)
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{
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char *p;
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/* construct a SMBsendstrt command */
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memset(cli->outbuf,'\0',smb_size);
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cli_set_message(cli->outbuf,0,0,True);
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SCVAL(cli->outbuf,smb_com,SMBsendstrt);
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SSVAL(cli->outbuf,smb_tid,cli->cnum);
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cli_setup_packet(cli);
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p = smb_buf(cli->outbuf);
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*p++ = 4;
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p += clistr_push(cli, p, username,
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cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_ASCII|STR_TERMINATE);
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*p++ = 4;
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p += clistr_push(cli, p, host,
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cli->bufsize - PTR_DIFF(p,cli->outbuf), STR_ASCII|STR_TERMINATE);
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cli_setup_bcc(cli, p);
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return(PTR_DIFF(p, cli->outbuf));
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}
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bool cli_message_start(struct cli_state *cli, const char *host, const char *username,
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int *grp)
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{
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cli_message_start_build(cli, host, username);
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cli_send_smb(cli);
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if (!cli_receive_smb(cli)) {
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return False;
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}
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if (cli_is_error(cli)) return False;
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*grp = SVAL(cli->inbuf,smb_vwv0);
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return True;
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}
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/****************************************************************************
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Send a message
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****************************************************************************/
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int cli_message_text_build(struct cli_state *cli, const char *msg, int len, int grp)
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{
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char *msgdos;
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size_t lendos;
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char *p;
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memset(cli->outbuf,'\0',smb_size);
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cli_set_message(cli->outbuf,1,0,True);
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SCVAL(cli->outbuf,smb_com,SMBsendtxt);
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SSVAL(cli->outbuf,smb_tid,cli->cnum);
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cli_setup_packet(cli);
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SSVAL(cli->outbuf,smb_vwv0,grp);
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p = smb_buf(cli->outbuf);
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*p++ = 1;
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if (!convert_string_allocate(NULL, CH_UNIX, CH_DOS, msg, len,
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(void **)(void *)&msgdos, &lendos, True) || !msgdos) {
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DEBUG(3,("Conversion failed, sending message in UNIX charset\n"));
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SSVAL(p, 0, len); p += 2;
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if (len > cli->bufsize - PTR_DIFF(p,cli->outbuf)) {
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return -1;
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}
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memcpy(p, msg, len);
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p += len;
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} else {
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SSVAL(p, 0, lendos); p += 2;
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if (lendos > cli->bufsize - PTR_DIFF(p,cli->outbuf)) {
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return -1;
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}
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memcpy(p, msgdos, lendos);
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p += lendos;
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SAFE_FREE(msgdos);
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}
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cli_setup_bcc(cli, p);
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return(PTR_DIFF(p, cli->outbuf));
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}
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bool cli_message_text(struct cli_state *cli, const char *msg, int len, int grp)
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{
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cli_message_text_build(cli, msg, len, grp);
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cli_send_smb(cli);
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if (!cli_receive_smb(cli)) {
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return False;
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}
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if (cli_is_error(cli)) return False;
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return True;
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}
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/****************************************************************************
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End a message.
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****************************************************************************/
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int cli_message_end_build(struct cli_state *cli, int grp)
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{
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char *p;
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memset(cli->outbuf,'\0',smb_size);
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cli_set_message(cli->outbuf,1,0,True);
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SCVAL(cli->outbuf,smb_com,SMBsendend);
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SSVAL(cli->outbuf,smb_tid,cli->cnum);
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SSVAL(cli->outbuf,smb_vwv0,grp);
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cli_setup_packet(cli);
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p = smb_buf(cli->outbuf);
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return(PTR_DIFF(p, cli->outbuf));
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}
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bool cli_message_end(struct cli_state *cli, int grp)
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{
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cli_message_end_build(cli, grp);
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cli_send_smb(cli);
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if (!cli_receive_smb(cli)) {
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return False;
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}
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if (cli_is_error(cli)) return False;
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return True;
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}
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