source/smbd/message.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 1.9.
   4    SMB messaging
   5    Copyright (C) Andrew Tridgell 1992-1998
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21 /*
  22    This file handles the messaging system calls for winpopup style
  23    messages
  24 */
  25
  26
  27 #include "includes.h"
  28
  29 /* look in server.c for some explanation of these variables */
  30 extern int DEBUGLEVEL;
  31
  32
  33 static char msgbuf[1600];
  34 static int msgpos=0;
  35 static fstring msgfrom="";
  36 static fstring msgto="";
  37
  38 /****************************************************************************
  39 deliver the message
  40 ****************************************************************************/
  41 static void msg_deliver(void)
  42 {
  43   pstring s;
  44   fstring name;
  45   int i;
  46   int fd;
  47
  48   if (! (*lp_msg_command()))
  49     {
  50       DEBUG(1,("no messaging command specified\n"));
  51       msgpos = 0;
  52       return;
  53     }
  54
  55   /* put it in a temporary file */
  56   slprintf(s,sizeof(s)-1, "%s/msg.XXXXXX",tmpdir());
  57   fstrcpy(name,(char *)mktemp(s));
  58
  59   fd = sys_open(name,O_WRONLY|O_CREAT|O_TRUNC|O_EXCL,0600);
  60   if (fd == -1) {
  61     DEBUG(1,("can't open message file %s\n",name));
  62     return;
  63   }
  64
  65   for (i=0;i<msgpos;) {
  66     if (msgbuf[i]=='\r' && i<(msgpos-1) && msgbuf[i+1]=='\n') {
  67       i++; continue;
  68     }
  69     write(fd,&msgbuf[i++],1);
  70   }
  71   close(fd);
  72
  73
  74   /* run the command */
  75   if (*lp_msg_command())
  76     {
  77       pstrcpy(s,lp_msg_command());
  78       string_sub(s,"%s",name);
  79       string_sub(s,"%f",msgfrom);
  80       string_sub(s,"%t",msgto);
  81       standard_sub_basic(s);
  82       smbrun(s,NULL,False);
  83     }
  84
  85   msgpos = 0;
  86 }
  87
  88
  89
  90 /****************************************************************************
  91   reply to a sends
  92 ****************************************************************************/
  93 int reply_sends(connection_struct *conn,
  94                 char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
  95 {
  96   int len;
  97   char *orig,*dest,*msg;
  98   int outsize = 0;
  99
 100   msgpos = 0;
 101
 102
 103   if (! (*lp_msg_command()))
 104     return(ERROR(ERRSRV,ERRmsgoff));
 105
 106   outsize = set_message(outbuf,0,0,True);
 107
 108   orig = smb_buf(inbuf)+1;
 109   dest = skip_string(orig,1)+1;
 110   msg = skip_string(dest,1)+1;
 111
 112   fstrcpy(msgfrom,orig);
 113   fstrcpy(msgto,dest);
 114
 115   len = SVAL(msg,0);
 116   len = MIN(len,1600-msgpos);
 117
 118   memcpy(&msgbuf[msgpos],msg+2,len);
 119   msgpos += len;
 120
 121   DEBUG( 3, ( "SMBsends (from %s to %s)\n", orig, dest ) );
 122
 123   msg_deliver();
 124
 125   return(outsize);
 126 }
 127
 128
 129 /****************************************************************************
 130   reply to a sendstrt
 131 ****************************************************************************/
 132 int reply_sendstrt(connection_struct *conn,
 133                    char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 134 {
 135   char *orig,*dest;
 136   int outsize = 0;
 137
 138   if (! (*lp_msg_command()))
 139     return(ERROR(ERRSRV,ERRmsgoff));
 140
 141   outsize = set_message(outbuf,1,0,True);
 142
 143   msgpos = 0;
 144
 145   orig = smb_buf(inbuf)+1;
 146   dest = skip_string(orig,1)+1;
 147
 148   fstrcpy(msgfrom,orig);
 149   fstrcpy(msgto,dest);
 150
 151   DEBUG( 3, ( "SMBsendstrt (from %s to %s)\n", msgfrom, msgto ) );
 152
 153   return(outsize);
 154 }
 155
 156
 157 /****************************************************************************
 158   reply to a sendtxt
 159 ****************************************************************************/
 160 int reply_sendtxt(connection_struct *conn,
 161                   char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 162 {
 163   int len;
 164   int outsize = 0;
 165   char *msg;
 166
 167   if (! (*lp_msg_command()))
 168     return(ERROR(ERRSRV,ERRmsgoff));
 169
 170   outsize = set_message(outbuf,0,0,True);
 171
 172   msg = smb_buf(inbuf) + 1;
 173
 174   len = SVAL(msg,0);
 175   len = MIN(len,1600-msgpos);
 176
 177   memcpy(&msgbuf[msgpos],msg+2,len);
 178   msgpos += len;
 179
 180   DEBUG( 3, ( "SMBsendtxt\n" ) );
 181
 182   return(outsize);
 183 }
 184
 185
 186 /****************************************************************************
 187   reply to a sendend
 188 ****************************************************************************/
 189 int reply_sendend(connection_struct *conn,
 190                   char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 191 {
 192   int outsize = 0;
 193
 194   if (! (*lp_msg_command()))
 195     return(ERROR(ERRSRV,ERRmsgoff));
 196
 197   outsize = set_message(outbuf,0,0,True);
 198
 199   DEBUG(3,("SMBsendend\n"));
 200
 201   msg_deliver();
 202
 203   return(outsize);
 204 }
 205