source/smbd/message.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 1.9.
   4    SMB messaging
   5    Copyright (C) Andrew Tridgell 1992-1997
   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   sprintf(s,"%s/msg.XXXXXX",tmpdir());
  57   strcpy(name,(char *)mktemp(s));
  58
  59   fd = 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       strcpy(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(-1,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(char *inbuf,char *outbuf)
  94 {
  95   int len;
  96   char *orig,*dest,*msg;
  97   int outsize = 0;
  98
  99   msgpos = 0;
 100
 101
 102   if (! (*lp_msg_command()))
 103     return(ERROR(ERRSRV,ERRmsgoff));
 104
 105   outsize = set_message(outbuf,0,0,True);
 106
 107   orig = smb_buf(inbuf)+1;
 108   dest = skip_string(orig,1)+1;
 109   msg = skip_string(dest,1)+1;
 110
 111   strcpy(msgfrom,orig);
 112   strcpy(msgto,dest);
 113
 114   len = SVAL(msg,0);
 115   len = MIN(len,1600-msgpos);
 116
 117   memcpy(&msgbuf[msgpos],msg+2,len);
 118   msgpos += len;
 119
 120   DEBUG(3,("%s SMBsends (from %s to %s)\n",timestring(),orig,dest));
 121
 122   msg_deliver();
 123
 124   return(outsize);
 125 }
 126
 127
 128 /****************************************************************************
 129   reply to a sendstrt
 130 ****************************************************************************/
 131 int reply_sendstrt(char *inbuf,char *outbuf)
 132 {
 133   char *orig,*dest;
 134   int outsize = 0;
 135
 136   if (! (*lp_msg_command()))
 137     return(ERROR(ERRSRV,ERRmsgoff));
 138
 139   outsize = set_message(outbuf,1,0,True);
 140
 141   msgpos = 0;
 142
 143   orig = smb_buf(inbuf)+1;
 144   dest = skip_string(orig,1)+1;
 145
 146   strcpy(msgfrom,orig);
 147   strcpy(msgto,dest);
 148
 149   DEBUG(3,("%s SMBsendstrt (from %s to %s)\n",timestring(),orig,dest));
 150
 151   return(outsize);
 152 }
 153
 154
 155 /****************************************************************************
 156   reply to a sendtxt
 157 ****************************************************************************/
 158 int reply_sendtxt(char *inbuf,char *outbuf)
 159 {
 160   int len;
 161   int outsize = 0;
 162   char *msg;
 163
 164   if (! (*lp_msg_command()))
 165     return(ERROR(ERRSRV,ERRmsgoff));
 166
 167   outsize = set_message(outbuf,0,0,True);
 168
 169   msg = smb_buf(inbuf) + 1;
 170
 171   len = SVAL(msg,0);
 172   len = MIN(len,1600-msgpos);
 173
 174   memcpy(&msgbuf[msgpos],msg+2,len);
 175   msgpos += len;
 176
 177   DEBUG(3,("%s SMBsendtxt\n",timestring()));
 178
 179   return(outsize);
 180 }
 181
 182
 183 /****************************************************************************
 184   reply to a sendend
 185 ****************************************************************************/
 186 int reply_sendend(char *inbuf,char *outbuf)
 187 {
 188   int outsize = 0;
 189
 190   if (! (*lp_msg_command()))
 191     return(ERROR(ERRSRV,ERRmsgoff));
 192
 193   outsize = set_message(outbuf,0,0,True);
 194
 195   DEBUG(3,("%s SMBsendend\n",timestring()));
 196
 197   msg_deliver();
 198
 199   return(outsize);
 200 }
 201