ssh.c

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00001 /*
00002  * Copyright (C), 2000-2002 by Contributors to the monit codebase. 
00003  * All Rights Reserved.
00004  *
00005  * This program is free software; you can redistribute it and/or
00006  * modify it under the terms of the GNU General Public License as
00007  * published by the Free Software Foundation; either version 2 of the
00008  * License, or (at your option) any later version.
00009  *
00010  * This program is distributed in the hope that it will be useful, but
00011  * WITHOUT ANY WARRANTY; without even the implied warranty of
00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013  * General Public License for more details.
00014  * 
00015  * You should have received a copy of the GNU General Public License
00016  * along with this program; if not, write to the Free Software Foundation,
00017  * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
00018  */
00019 
00020 #include <config.h>
00021 
00022 #include <ctype.h>
00023 
00024 #ifdef HAVE_STRING_H
00025 #include <string.h>
00026 #endif
00027 
00028 #ifdef HAVE_ERRNO_H
00029 #include <errno.h>
00030 #endif
00031 
00032 #include "protocol.h"
00033 
00044 int check_ssh(Port_T p) {
00045 
00046   char  buf[STRLEN];
00047 
00048   ASSERT(p);
00049     
00050   if(port_recv(p, buf, sizeof(buf), 0) <= 0) {
00051     log("SSH: error receiving identification string -- %s\n", STRERROR);
00052     return FALSE;
00053   }
00054 
00055   chomp(buf);
00056   
00057   if(strncmp(buf, "SSH-", 4) != 0) {
00058     log("SSH: protocol error %s\n", buf);
00059     return FALSE;
00060   }
00061 
00062   /* send identification string back to server */
00063   if(port_send(p, buf, strlen(buf), 0) <= 0) {
00064     log("SSH: error sending identification string -- %s\n", STRERROR);
00065     return FALSE;
00066   }
00067    
00068   return TRUE;
00069 }