source3/libsmb/climessage.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    client message handling routines
   4    Copyright (C) Andrew Tridgell 1994-1998
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #define NO_SYSLOG
  22
  23 #include "includes.h"
  24
  25
  26 /****************************************************************************
  27 start a message sequence
  28 ****************************************************************************/
  29 int cli_message_start_build(struct cli_state *cli, char *host, char *username)
  30 {
  31         char *p;
  32
  33         /* construct a SMBsendstrt command */
  34         memset(cli->outbuf,'\0',smb_size);
  35         set_message(cli->outbuf,0,0,True);
  36         SCVAL(cli->outbuf,smb_com,SMBsendstrt);
  37         SSVAL(cli->outbuf,smb_tid,cli->cnum);
  38         cli_setup_packet(cli);
  39
  40         p = smb_buf(cli->outbuf);
  41         *p++ = 4;
  42         p += clistr_push(cli, p, username, -1, STR_ASCII|STR_TERMINATE);
  43         *p++ = 4;
  44         p += clistr_push(cli, p, host, -1, STR_ASCII|STR_TERMINATE);
  45
  46         cli_setup_bcc(cli, p);
  47
  48         return(PTR_DIFF(p, cli->outbuf));
  49 }
  50
  51 BOOL cli_message_start(struct cli_state *cli, char *host, char *username,
  52                               int *grp)
  53 {
  54         cli_message_start_build(cli, host, username);
  55
  56         cli_send_smb(cli);
  57
  58         if (!cli_receive_smb(cli)) {
  59                 return False;
  60         }
  61
  62         if (cli_is_error(cli)) return False;
  63
  64         *grp = SVAL(cli->inbuf,smb_vwv0);
  65
  66         return True;
  67 }
  68
  69
  70 /****************************************************************************
  71 send a message
  72 ****************************************************************************/
  73 int cli_message_text_build(struct cli_state *cli, char *msg, int len, int grp)
  74 {
  75         char *msgdos;
  76         int lendos;
  77         char *p;
  78
  79         memset(cli->outbuf,'\0',smb_size);
  80         set_message(cli->outbuf,1,0,True);
  81         SCVAL(cli->outbuf,smb_com,SMBsendtxt);
  82         SSVAL(cli->outbuf,smb_tid,cli->cnum);
  83         cli_setup_packet(cli);
  84
  85         SSVAL(cli->outbuf,smb_vwv0,grp);
  86
  87         p = smb_buf(cli->outbuf);
  88         *p++ = 1;
  89
  90         if ((lendos = (int)convert_string_allocate(NULL,CH_UNIX, CH_DOS, msg,len, (void **) &msgdos, True)) < 0 || !msgdos) {
  91                 DEBUG(3,("Conversion failed, sending message in UNIX charset\n"));
  92                 SSVAL(p, 0, len); p += 2;
  93                 memcpy(p, msg, len);
  94                 p += len;
  95         } else {
  96                 SSVAL(p, 0, lendos); p += 2;
  97                 memcpy(p, msgdos, lendos);
  98                 p += lendos;
  99                 SAFE_FREE(msgdos);
 100         }
 101
 102         cli_setup_bcc(cli, p);
 103
 104         return(PTR_DIFF(p, cli->outbuf));
 105 }
 106
 107 BOOL cli_message_text(struct cli_state *cli, char *msg, int len, int grp)
 108 {
 109         cli_message_text_build(cli, msg, len, grp);
 110
 111         cli_send_smb(cli);
 112
 113         if (!cli_receive_smb(cli)) {
 114                 return False;
 115         }
 116
 117         if (cli_is_error(cli)) return False;
 118
 119         return True;
 120 }
 121
 122 /****************************************************************************
 123 end a message
 124 ****************************************************************************/
 125 int cli_message_end_build(struct cli_state *cli, int grp)
 126 {
 127         char *p;
 128
 129         memset(cli->outbuf,'\0',smb_size);
 130         set_message(cli->outbuf,1,0,True);
 131         SCVAL(cli->outbuf,smb_com,SMBsendend);
 132         SSVAL(cli->outbuf,smb_tid,cli->cnum);
 133
 134         SSVAL(cli->outbuf,smb_vwv0,grp);
 135
 136         cli_setup_packet(cli);
 137
 138         p = smb_buf(cli->outbuf);
 139
 140         return(PTR_DIFF(p, cli->outbuf));
 141 }
 142
 143 BOOL cli_message_end(struct cli_state *cli, int grp)
 144 {
 145         cli_message_end_build(cli, grp);
 146
 147         cli_send_smb(cli);
 148
 149         if (!cli_receive_smb(cli)) {
 150                 return False;
 151         }
 152
 153         if (cli_is_error(cli)) return False;
 154
 155         return True;
 156 }