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 extern userdom_struct current_user_info;
  30
  31 /* look in server.c for some explanation of these variables */
  32 static char msgbuf[1600];
  33 static int msgpos;
  34 static fstring msgfrom;
  35 static fstring msgto;
  36
  37 /****************************************************************************
  38 deliver the message
  39 ****************************************************************************/
  40 static void msg_deliver(void)
  41 {
  42   pstring name;
  43   int i;
  44   int fd;
  45
  46   if (! (*lp_msg_command()))
  47     {
  48       DEBUG(1,("no messaging command specified\n"));
  49       msgpos = 0;
  50       return;
  51     }
  52
  53   /* put it in a temporary file */
  54   slprintf(name,sizeof(name)-1, "%s/msg.XXXXXX",tmpdir());
  55   fd = smb_mkstemp(name);
  56
  57   if (fd == -1) {
  58     DEBUG(1,("can't open message file %s\n",name));
  59     return;
  60   }
  61
  62   /*
  63    * Incoming message is in DOS codepage format. Convert to UNIX.
  64    */
  65
  66   if(msgpos > 0) {
  67     msgbuf[msgpos] = '\0'; /* Ensure null terminated. */
  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(current_user_info.smb_name, 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 *msg;
 107   int outsize = 0;
 108   char *p;
 109
 110   START_PROFILE(SMBsends);
 111
 112   msgpos = 0;
 113
 114   if (! (*lp_msg_command())) {
 115     END_PROFILE(SMBsends);
 116     return(ERROR_DOS(ERRSRV,ERRmsgoff));
 117   }
 118
 119   outsize = set_message(outbuf,0,0,True);
 120
 121   p = smb_buf(inbuf)+1;
 122   p += srvstr_pull(inbuf, msgfrom, p, sizeof(msgfrom), -1, STR_TERMINATE) + 1;
 123   p += srvstr_pull(inbuf, msgto, p, sizeof(msgto), -1, STR_TERMINATE) + 1;
 124
 125   msg = p;
 126
 127   len = SVAL(msg,0);
 128   len = MIN(len,sizeof(msgbuf)-msgpos);
 129
 130   memset(msgbuf,'\0',sizeof(msgbuf));
 131
 132   memcpy(&msgbuf[msgpos],msg+2,len);
 133   msgpos += len;
 134
 135   msg_deliver();
 136
 137   END_PROFILE(SMBsends);
 138   return(outsize);
 139 }
 140
 141
 142 /****************************************************************************
 143   reply to a sendstrt
 144 ****************************************************************************/
 145 int reply_sendstrt(connection_struct *conn,
 146                    char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 147 {
 148   int outsize = 0;
 149   char *p;
 150
 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   p = smb_buf(inbuf)+1;
 164   p += srvstr_pull(inbuf, msgfrom, p, sizeof(msgfrom), -1, STR_TERMINATE) + 1;
 165   p += srvstr_pull(inbuf, msgto, p, sizeof(msgto), -1, STR_TERMINATE) + 1;
 166
 167   DEBUG( 3, ( "SMBsendstrt (from %s to %s)\n", msgfrom, msgto ) );
 168
 169   END_PROFILE(SMBsendstrt);
 170   return(outsize);
 171 }
 172
 173
 174 /****************************************************************************
 175   reply to a sendtxt
 176 ****************************************************************************/
 177 int reply_sendtxt(connection_struct *conn,
 178                   char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 179 {
 180   int len;
 181   int outsize = 0;
 182   char *msg;
 183   START_PROFILE(SMBsendtxt);
 184
 185   if (! (*lp_msg_command())) {
 186     END_PROFILE(SMBsendtxt);
 187     return(ERROR_DOS(ERRSRV,ERRmsgoff));
 188   }
 189
 190   outsize = set_message(outbuf,0,0,True);
 191
 192   msg = smb_buf(inbuf) + 1;
 193
 194   len = SVAL(msg,0);
 195   len = MIN(len,sizeof(msgbuf)-msgpos);
 196
 197   memcpy(&msgbuf[msgpos],msg+2,len);
 198   msgpos += len;
 199
 200   DEBUG( 3, ( "SMBsendtxt\n" ) );
 201
 202   END_PROFILE(SMBsendtxt);
 203   return(outsize);
 204 }
 205
 206
 207 /****************************************************************************
 208   reply to a sendend
 209 ****************************************************************************/
 210 int reply_sendend(connection_struct *conn,
 211                   char *inbuf,char *outbuf, int dum_size, int dum_buffsize)
 212 {
 213   int outsize = 0;
 214   START_PROFILE(SMBsendend);
 215
 216   if (! (*lp_msg_command())) {
 217     END_PROFILE(SMBsendend);
 218     return(ERROR_DOS(ERRSRV,ERRmsgoff));
 219   }
 220
 221   outsize = set_message(outbuf,0,0,True);
 222
 223   DEBUG(3,("SMBsendend\n"));
 224
 225   msg_deliver();
 226
 227   END_PROFILE(SMBsendend);
 228   return(outsize);
 229 }