source/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 #include "includes.h"
  22
  23
  24 /****************************************************************************
  25 start a message sequence
  26 ****************************************************************************/
  27 int cli_message_start_build(struct cli_state *cli, char *host, char *username)
  28 {
  29         char *p;
  30
  31         /* construct a SMBsendstrt command */
  32         memset(cli->outbuf,'\0',smb_size);
  33         set_message(NULL,cli->outbuf,0,0,True);
  34         SCVAL(cli->outbuf,smb_com,SMBsendstrt);
  35         SSVAL(cli->outbuf,smb_tid,cli->cnum);
  36         cli_setup_packet(cli);
  37
  38         p = smb_buf(cli->outbuf);
  39         *p++ = 4;
  40         p += clistr_push(cli, p, username, -1, STR_ASCII|STR_TERMINATE);
  41         *p++ = 4;
  42         p += clistr_push(cli, p, host, -1, STR_ASCII|STR_TERMINATE);
  43
  44         cli_setup_bcc(cli, p);
  45
  46         return(PTR_DIFF(p, cli->outbuf));
  47 }
  48
  49 BOOL cli_message_start(struct cli_state *cli, char *host, char *username,
  50                               int *grp)
  51 {
  52         cli_message_start_build(cli, host, username);
  53
  54         cli_send_smb(cli);
  55
  56         if (!cli_receive_smb(cli)) {
  57                 return False;
  58         }
  59
  60         if (cli_is_error(cli)) return False;
  61
  62         *grp = SVAL(cli->inbuf,smb_vwv0);
  63
  64         return True;
  65 }
  66
  67
  68 /****************************************************************************
  69 send a message
  70 ****************************************************************************/
  71 int cli_message_text_build(struct cli_state *cli, char *msg, int len, int grp)
  72 {
  73         char *msgdos;
  74         int lendos;
  75         char *p;
  76
  77         memset(cli->outbuf,'\0',smb_size);
  78         set_message(NULL,cli->outbuf,1,0,True);
  79         SCVAL(cli->outbuf,smb_com,SMBsendtxt);
  80         SSVAL(cli->outbuf,smb_tid,cli->cnum);
  81         cli_setup_packet(cli);
  82
  83         SSVAL(cli->outbuf,smb_vwv0,grp);
  84
  85         p = smb_buf(cli->outbuf);
  86         *p++ = 1;
  87
  88         if ((lendos = (int)convert_string_allocate(NULL,CH_UNIX, CH_DOS, msg,len, (void **)(void *)&msgdos, True)) < 0 || !msgdos) {
  89                 DEBUG(3,("Conversion failed, sending message in UNIX charset\n"));
  90                 SSVAL(p, 0, len); p += 2;
  91                 memcpy(p, msg, len);
  92                 p += len;
  93         } else {
  94                 SSVAL(p, 0, lendos); p += 2;
  95                 memcpy(p, msgdos, lendos);
  96                 p += lendos;
  97                 SAFE_FREE(msgdos);
  98         }
  99
 100         cli_setup_bcc(cli, p);
 101
 102         return(PTR_DIFF(p, cli->outbuf));
 103 }
 104
 105 BOOL cli_message_text(struct cli_state *cli, char *msg, int len, int grp)
 106 {
 107         cli_message_text_build(cli, msg, len, grp);
 108
 109         cli_send_smb(cli);
 110
 111         if (!cli_receive_smb(cli)) {
 112                 return False;
 113         }
 114
 115         if (cli_is_error(cli)) return False;
 116
 117         return True;
 118 }
 119
 120 /****************************************************************************
 121 end a message
 122 ****************************************************************************/
 123 int cli_message_end_build(struct cli_state *cli, int grp)
 124 {
 125         char *p;
 126
 127         memset(cli->outbuf,'\0',smb_size);
 128         set_message(NULL,cli->outbuf,1,0,True);
 129         SCVAL(cli->outbuf,smb_com,SMBsendend);
 130         SSVAL(cli->outbuf,smb_tid,cli->cnum);
 131
 132         SSVAL(cli->outbuf,smb_vwv0,grp);
 133
 134         cli_setup_packet(cli);
 135
 136         p = smb_buf(cli->outbuf);
 137
 138         return(PTR_DIFF(p, cli->outbuf));
 139 }
 140
 141 BOOL cli_message_end(struct cli_state *cli, int grp)
 142 {
 143         cli_message_end_build(cli, grp);
 144
 145         cli_send_smb(cli);
 146
 147         if (!cli_receive_smb(cli)) {
 148                 return False;
 149         }
 150
 151         if (cli_is_error(cli)) return False;
 152
 153         return True;
 154 }