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
  31 static char msgbuf[1600];
  32 static int msgpos=0;
  33 static fstring msgfrom="";
  34 static fstring msgto="";
  35
  36 /****************************************************************************
  37 deliver the message
  38 ****************************************************************************/
  39 static void msg_deliver(void)
  40 {
  41   pstring name;
  42   int i;
  43   int fd;
  44
  45   if (! (*lp_msg_command()))
  46     {
  47       DEBUG(1,("no messaging command specified\n"));
  48       msgpos = 0;
  49       return;
  50     }
  51
  52   /* put it in a temporary file */
  53   slprintf(name,sizeof(name)-1, "%s/msg.XXXXXX",tmpdir());
  54   fd = smb_mkstemp(name);
  55
  56   if (fd == -1) {
  57     DEBUG(1,("can't open message file %s\n",name));
  58     return;
  59   }
  60
  61   /*
  62    * Incoming message is in DOS codepage format. Convert to UNIX.
  63    */
  64
  65   if(msgpos > 0) {
  66     msgbuf[msgpos] = '\0'; /* Ensure null terminated. */
  67     pstrcpy(msgbuf,dos_to_unix_static(msgbuf));
  68   }
  69
  70   for (i=0;i<msgpos;) {
  71     if (msgbuf[i]=='\r' && i<(msgpos-1) && msgbuf[i+1]=='\n') {
  72       i++; continue;
  73     }
  74     write(fd,&msgbuf[i++],1);
  75   }
  76   close(fd);
  77
  78
  79   /* run the command */
  80   if (*lp_msg_command())
  81     {
  82       fstring alpha_msgfrom;
  83       fstring alpha_msgto;
  84       pstring s;
  85
  86       pstrcpy(s,lp_msg_command());
  87       pstring_sub(s,"%f",alpha_strcpy(alpha_msgfrom,msgfrom,NULL,sizeof(alpha_msgfrom)));
  88       pstring_sub(s,"%t",alpha_strcpy(alpha_msgto,msgto,NULL,sizeof(alpha_msgto)));
  89       standard_sub_basic(s,sizeof(s));
  90       pstring_sub(s,"%s",name);
  91       smbrun(s,NULL);
  92     }
  93
  94   msgpos = 0;
  95 }
  96
  97
  98
  99 /****************************************************************************
 100   reply to a sends
 101 ****************************************************************************/
 102 int reply_sends(connection_struct *conn,
 103                 char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 104 {
 105   int len;
 106   char *orig,*dest,*msg;
 107   int outsize = 0;
 108   START_PROFILE(SMBsends);
 109
 110   msgpos = 0;
 111
 112   if (! (*lp_msg_command())) {
 113     END_PROFILE(SMBsends);
 114     return(ERROR_DOS(ERRSRV,ERRmsgoff));
 115   }
 116
 117   outsize = set_message(outbuf,0,0,True);
 118
 119   orig = smb_buf(inbuf)+1;
 120   dest = skip_string(orig,1)+1;
 121   msg = skip_string(dest,1)+1;
 122
 123   fstrcpy(msgfrom,orig);
 124   fstrcpy(msgto,dest);
 125
 126   len = SVAL(msg,0);
 127   len = MIN(len,sizeof(msgbuf)-msgpos);
 128
 129   memset(msgbuf,'\0',sizeof(msgbuf));
 130
 131   memcpy(&msgbuf[msgpos],msg+2,len);
 132   msgpos += len;
 133
 134   DEBUG( 3, ( "SMBsends (from %s to %s)\n", orig, dest ) );
 135
 136   msg_deliver();
 137
 138   END_PROFILE(SMBsends);
 139   return(outsize);
 140 }
 141
 142
 143 /****************************************************************************
 144   reply to a sendstrt
 145 ****************************************************************************/
 146 int reply_sendstrt(connection_struct *conn,
 147                    char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 148 {
 149   char *orig,*dest;
 150   int outsize = 0;
 151   START_PROFILE(SMBsendstrt);
 152
 153   if (! (*lp_msg_command())) {
 154     END_PROFILE(SMBsendstrt);
 155     return(ERROR_DOS(ERRSRV,ERRmsgoff));
 156   }
 157
 158   outsize = set_message(outbuf,1,0,True);
 159
 160   memset(msgbuf,'\0',sizeof(msgbuf));
 161   msgpos = 0;
 162
 163   orig = smb_buf(inbuf)+1;
 164   dest = skip_string(orig,1)+1;
 165
 166   fstrcpy(msgfrom,orig);
 167   fstrcpy(msgto,dest);
 168
 169   DEBUG( 3, ( "SMBsendstrt (from %s to %s)\n", msgfrom, msgto ) );
 170
 171   END_PROFILE(SMBsendstrt);
 172   return(outsize);
 173 }
 174
 175
 176 /****************************************************************************
 177   reply to a sendtxt
 178 ****************************************************************************/
 179 int reply_sendtxt(connection_struct *conn,
 180                   char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 181 {
 182   int len;
 183   int outsize = 0;
 184   char *msg;
 185   START_PROFILE(SMBsendtxt);
 186
 187   if (! (*lp_msg_command())) {
 188     END_PROFILE(SMBsendtxt);
 189     return(ERROR_DOS(ERRSRV,ERRmsgoff));
 190   }
 191
 192   outsize = set_message(outbuf,0,0,True);
 193
 194   msg = smb_buf(inbuf) + 1;
 195
 196   len = SVAL(msg,0);
 197   len = MIN(len,sizeof(msgbuf)-msgpos);
 198
 199   memcpy(&msgbuf[msgpos],msg+2,len);
 200   msgpos += len;
 201
 202   DEBUG( 3, ( "SMBsendtxt\n" ) );
 203
 204   END_PROFILE(SMBsendtxt);
 205   return(outsize);
 206 }
 207
 208
 209 /****************************************************************************
 210   reply to a sendend
 211 ****************************************************************************/
 212 int reply_sendend(connection_struct *conn,
 213                   char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 214 {
 215   int outsize = 0;
 216   START_PROFILE(SMBsendend);
 217
 218   if (! (*lp_msg_command())) {
 219     END_PROFILE(SMBsendend);
 220     return(ERROR_DOS(ERRSRV,ERRmsgoff));
 221   }
 222
 223   outsize = set_message(outbuf,0,0,True);
 224
 225   DEBUG(3,("SMBsendend\n"));
 226
 227   msg_deliver();
 228
 229   END_PROFILE(SMBsendend);
 230   return(outsize);
 231 }