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Annotation of src/usr.bin/telnet/authenc.c, Revision 1.7

1.7     ! otto        1: /*     $OpenBSD: authenc.c,v 1.6 2003/06/03 02:56:18 millert Exp $     */
1.2       niklas      2: /*     $NetBSD: authenc.c,v 1.5 1996/02/28 21:03:52 thorpej Exp $      */
                      3:
1.1       deraadt     4: /*-
                      5:  * Copyright (c) 1991, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * Redistribution and use in source and binary forms, with or without
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
1.6       millert    16:  * 3. Neither the name of the University nor the names of its contributors
1.1       deraadt    17:  *    may be used to endorse or promote products derived from this software
                     18:  *    without specific prior written permission.
                     19:  *
                     20:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     21:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     22:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     23:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     24:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     25:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     26:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     27:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     28:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     29:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     30:  * SUCH DAMAGE.
                     31:  */
                     32:
1.5       hin        33: /*
1.7     ! otto       34: RCSID("$Id: authenc.c,v 1.6 2003/06/03 02:56:18 millert Exp $");
1.5       hin        35: */
                     36:
1.3       art        37: #include "telnet_locl.h"
1.1       deraadt    38:
1.3       art        39: #if    defined(AUTHENTICATION) || defined(ENCRYPTION)
1.1       deraadt    40:
                     41:        int
1.4       hin        42: telnet_net_write(str, len)
1.1       deraadt    43:        unsigned char *str;
                     44:        int len;
                     45: {
                     46:        if (NETROOM() > len) {
                     47:                ring_supply_data(&netoring, str, len);
                     48:                if (str[0] == IAC && str[1] == SE)
                     49:                        printsub('>', &str[2], len-2);
                     50:                return(len);
                     51:        }
                     52:        return(0);
                     53: }
                     54:
                     55:        void
                     56: net_encrypt()
                     57: {
1.3       art        58: #if    defined(ENCRYPTION)
                     59:        if (encrypt_output)
                     60:                ring_encrypt(&netoring, encrypt_output);
                     61:        else
                     62:                ring_clearto(&netoring);
                     63: #endif
1.1       deraadt    64: }
                     65:
                     66:        int
                     67: telnet_spin()
                     68: {
1.5       hin        69:     extern int scheduler_lockout_tty;
                     70:
                     71:     scheduler_lockout_tty = 1;
                     72:     Scheduler(0);
                     73:     scheduler_lockout_tty = 0;
                     74:
                     75:     return 0;
                     76:
1.1       deraadt    77: }
                     78:
                     79:        char *
                     80: telnet_getenv(val)
1.4       hin        81:        const char *val;
1.1       deraadt    82: {
1.7     ! otto       83:        return((char *)env_getvalue((unsigned char *)val, 0));
1.1       deraadt    84: }
                     85:
                     86:        char *
                     87: telnet_gets(prompt, result, length, echo)
                     88:        char *prompt;
                     89:        char *result;
                     90:        int length;
                     91:        int echo;
                     92: {
                     93:        extern char *getpass();
                     94:        extern int globalmode;
                     95:        int om = globalmode;
                     96:        char *res;
                     97:
                     98:        TerminalNewMode(-1);
                     99:        if (echo) {
                    100:                printf("%s", prompt);
                    101:                res = fgets(result, length, stdin);
1.3       art       102:        } else if ((res = getpass(prompt))) {
1.1       deraadt   103:                strncpy(result, res, length);
                    104:                res = result;
                    105:        }
                    106:        TerminalNewMode(om);
                    107:        return(res);
                    108: }
                    109: #endif /* defined(AUTHENTICATION) */