src/bin/network/telnet/authenc.c

   1 /*-
   2  * Copyright (c) 1991, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #if 0
  35 #ifndef lint
  36 static const char sccsid[] = "@(#)authenc.c     8.1 (Berkeley) 6/6/93";
  37 #endif
  38 #endif
  39 #include <sys/cdefs.h>
  40 __FBSDID("$FreeBSD: src/contrib/telnet/telnet/authenc.c,v 1.6 2003/05/04 02:54:48 obrien Exp $");
  41
  42 #ifdef  AUTHENTICATION
  43 #ifdef  ENCRYPTION
  44 #include <sys/types.h>
  45 #include <arpa/telnet.h>
  46 #include <pwd.h>
  47 #include <unistd.h>
  48 #include <libtelnet/encrypt.h>
  49 #include <libtelnet/misc.h>
  50
  51 #include "general.h"
  52 #include "ring.h"
  53 #include "externs.h"
  54 #include "defines.h"
  55 #include "types.h"
  56
  57 int
  58 net_write(unsigned char *str, int len)
  59 {
  60         if (NETROOM() > len) {
  61                 ring_supply_data(&netoring, str, len);
  62                 if (str[0] == IAC && str[1] == SE)
  63                         printsub('>', &str[2], len-2);
  64                 return(len);
  65         }
  66         return(0);
  67 }
  68
  69 void
  70 net_encrypt(void)
  71 {
  72 #ifdef  ENCRYPTION
  73         if (encrypt_output)
  74                 ring_encrypt(&netoring, encrypt_output);
  75         else
  76                 ring_clearto(&netoring);
  77 #endif  /* ENCRYPTION */
  78 }
  79
  80 int
  81 telnet_spin(void)
  82 {
  83         return(-1);
  84 }
  85
  86 char *
  87 telnet_getenv(char *val)
  88 {
  89         return((char *)env_getvalue((unsigned char *)val));
  90 }
  91
  92 char *
  93 telnet_gets(const char *prom, char *result, int length, int echo)
  94 {
  95         extern int globalmode;
  96         int om = globalmode;
  97         char *res;
  98
  99         TerminalNewMode(-1);
 100         if (echo) {
 101                 printf("%s", prom);
 102                 res = fgets(result, length, stdin);
 103         } else if ((res = getpass(prom))) {
 104                 strncpy(result, res, length);
 105                 res = result;
 106         }
 107         TerminalNewMode(om);
 108         return(res);
 109 }
 110 #endif  /* ENCRYPTION */
 111 #endif  /* AUTHENTICATION */