From 391736d065b339de158144addf9d3baea4615a44 Mon Sep 17 00:00:00 2001 From: Stephen Heumann Date: Sun, 31 May 2015 22:55:19 -0500 Subject: [PATCH] Remove source files needed only for authentication or encryption, which we've disabled. --- Makefile.common | 19 - libtelnet/auth-proto.h | 111 ----- libtelnet/auth.c | 623 ------------------------- libtelnet/auth.h | 80 ---- libtelnet/enc-proto.h | 126 ----- libtelnet/enc_des.c | 662 -------------------------- libtelnet/encrypt.c | 956 -------------------------------------- libtelnet/encrypt.h | 106 ----- libtelnet/kerberos.c | 506 -------------------- libtelnet/kerberos5.c | 827 --------------------------------- libtelnet/key-proto.h | 65 --- libtelnet/krb4encpwd.c | 428 ----------------- libtelnet/misc.c | 109 ----- libtelnet/pk.c | 265 ----------- libtelnet/pk.h | 59 --- libtelnet/read_password.c | 151 ------ libtelnet/rsaencpwd.c | 475 ------------------- libtelnet/sra.c | 602 ------------------------ telnet/authenc.c | 111 ----- telnetd/authenc.c | 90 ---- 20 files changed, 6371 deletions(-) delete mode 100644 libtelnet/auth-proto.h delete mode 100644 libtelnet/auth.c delete mode 100644 libtelnet/auth.h delete mode 100644 libtelnet/enc-proto.h delete mode 100644 libtelnet/enc_des.c delete mode 100644 libtelnet/encrypt.c delete mode 100644 libtelnet/encrypt.h delete mode 100644 libtelnet/kerberos.c delete mode 100644 libtelnet/kerberos5.c delete mode 100644 libtelnet/key-proto.h delete mode 100644 libtelnet/krb4encpwd.c delete mode 100644 libtelnet/misc.c delete mode 100644 libtelnet/pk.c delete mode 100644 libtelnet/pk.h delete mode 100644 libtelnet/read_password.c delete mode 100644 libtelnet/rsaencpwd.c delete mode 100644 libtelnet/sra.c delete mode 100644 telnet/authenc.c delete mode 100644 telnetd/authenc.c diff --git a/Makefile.common b/Makefile.common index b7605a9..e257a10 100644 --- a/Makefile.common +++ b/Makefile.common @@ -1,24 +1,12 @@ LIBTELNET_SRCS = \ - libtelnet/auth.c \ - libtelnet/enc_des.c \ - libtelnet/encrypt.c \ libtelnet/genget.c \ libtelnet/getent.c \ - libtelnet/kerberos.c \ - libtelnet/kerberos5.c \ - libtelnet/krb4encpwd.c \ - libtelnet/misc.c \ - libtelnet/read_password.c \ - libtelnet/rsaencpwd.c \ - libtelnet/sra.c \ libtelnet/getaddrinfo.c \ libtelnet/strlcpy.c \ libtelnet/vasprintf.c \ libtelnet/inet_ntop.c -# libtelnet/pk.c TELNET_SRCS = \ - telnet/authenc.c \ telnet/commands.c \ telnet/main.c \ telnet/network.c \ @@ -29,7 +17,6 @@ TELNET_SRCS = \ telnet/utilities.c TELNETD_SRCS = \ - telnetd/authenc.c \ telnetd/global.c \ telnetd/slc.c \ telnetd/state.c \ @@ -40,14 +27,8 @@ TELNETD_SRCS = \ HEADERS = \ arpa/telnet.h \ - libtelnet/auth-proto.h \ - libtelnet/auth.h \ - libtelnet/enc-proto.h \ - libtelnet/encrypt.h \ - libtelnet/key-proto.h \ libtelnet/misc-proto.h \ libtelnet/misc.h \ - libtelnet/pk.h \ libtelnet/getaddrinfo.h \ libtelnet/strlcpy.h \ libtelnet/vasprintf.h \ diff --git a/libtelnet/auth-proto.h b/libtelnet/auth-proto.h deleted file mode 100644 index 6d3ba7f..0000000 --- a/libtelnet/auth-proto.h +++ /dev/null @@ -1,111 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)auth-proto.h 8.1 (Berkeley) 6/4/93 - * $FreeBSD$ - */ - -/* - * Copyright (C) 1990 by the Massachusetts Institute of Technology - * - * Export of this software from the United States of America is assumed - * to require a specific license from the United States Government. - * It is the responsibility of any person or organization contemplating - * export to obtain such a license before exporting. - * - * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and - * distribute this software and its documentation for any purpose and - * without fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright notice and - * this permission notice appear in supporting documentation, and that - * the name of M.I.T. not be used in advertising or publicity pertaining - * to distribution of the software without specific, written prior - * permission. M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" without express - * or implied warranty. - */ - -#ifdef AUTHENTICATION - -Authenticator *findauthenticator(int, int); - -void auth_init(const char *, int); -int auth_cmd(int, char **); -void auth_request(void); -void auth_send(unsigned char *, int); -void auth_send_retry(void); -void auth_is(unsigned char *, int); -void auth_reply(unsigned char *, int); -void auth_finished(Authenticator *, int); -int auth_wait(char *); -void auth_disable_name(char *); -void auth_gen_printsub(unsigned char *, int, unsigned char *, int); -void auth_name(unsigned char *, int); -void auth_printsub(unsigned char *, int, unsigned char *, int); -int auth_sendname(unsigned char *, int); -void auth_encrypt_user(char *); -int auth_disable(char *); -int auth_enable(char *); -int auth_togdebug(int); -int auth_status(void); - -int getauthmask(char *, int *); - -#ifdef KRB4 -int kerberos4_init(Authenticator *, int); -int kerberos4_send(Authenticator *); -void kerberos4_is(Authenticator *, unsigned char *, int); -void kerberos4_reply(Authenticator *, unsigned char *, int); -int kerberos4_status(Authenticator *, char *, int); -void kerberos4_printsub(unsigned char *, int, unsigned char *, int); -#endif - -#ifdef KRB5 -int kerberos5_init(Authenticator *, int); -int kerberos5_send_mutual(Authenticator *); -int kerberos5_send_oneway(Authenticator *); -void kerberos5_is(Authenticator *, unsigned char *, int); -void kerberos5_reply(Authenticator *, unsigned char *, int); -int kerberos5_status(Authenticator *, char *, int level); -void kerberos5_printsub(unsigned char *, int, unsigned char *, int); -#endif - -#ifdef SRA -int sra_init(Authenticator *, int); -int sra_send(Authenticator *); -void sra_is(Authenticator *, unsigned char *, int); -void sra_reply(Authenticator *, unsigned char *, int); -int sra_status(Authenticator *, char *, int); -void sra_printsub(unsigned char *, int, unsigned char *, int); -#endif - -#endif diff --git a/libtelnet/auth.c b/libtelnet/auth.c deleted file mode 100644 index 5cddb63..0000000 --- a/libtelnet/auth.c +++ /dev/null @@ -1,623 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - */ - -#if 0 -#ifndef lint -static const char sccsid[] = "@(#)auth.c 8.3 (Berkeley) 5/30/95"; -#endif /* not lint */ -#endif -#include - - - -/* - * Copyright (C) 1990 by the Massachusetts Institute of Technology - * - * Export of this software from the United States of America is assumed - * to require a specific license from the United States Government. - * It is the responsibility of any person or organization contemplating - * export to obtain such a license before exporting. - * - * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and - * distribute this software and its documentation for any purpose and - * without fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright notice and - * this permission notice appear in supporting documentation, and that - * the name of M.I.T. not be used in advertising or publicity pertaining - * to distribution of the software without specific, written prior - * permission. M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" without express - * or implied warranty. - */ - - -#ifdef AUTHENTICATION -#define AUTH_NAMES -#include -#include -#include -#include -#include -#include -#include "arpa/telnet.h" - -#include "encrypt.h" -#include "auth.h" -#include "misc-proto.h" -#include "auth-proto.h" - -#define typemask(x) ((x) > 0 ? 1 << ((x)-1) : 0) - -#ifdef KRB4_ENCPWD -extern krb4encpwd_init(); -extern krb4encpwd_send(); -extern krb4encpwd_is(); -extern krb4encpwd_reply(); -extern krb4encpwd_status(); -extern krb4encpwd_printsub(); -#endif - -#ifdef RSA_ENCPWD -extern rsaencpwd_init(); -extern rsaencpwd_send(); -extern rsaencpwd_is(); -extern rsaencpwd_reply(); -extern rsaencpwd_status(); -extern rsaencpwd_printsub(); -#endif - -int auth_debug_mode = 0; -static const char *Name = "Noname"; -static int Server = 0; -static Authenticator *authenticated = 0; -static int authenticating = 0; -static int validuser = 0; -static unsigned char _auth_send_data[256]; -static unsigned char *auth_send_data; -static int auth_send_cnt = 0; - -int auth_onoff(char *type, int on); -void auth_encrypt_user(char *name); - -/* - * Authentication types supported. Plese note that these are stored - * in priority order, i.e. try the first one first. - */ -Authenticator authenticators[] = { -#ifdef KRB5 -# ifdef ENCRYPTION - { AUTHTYPE_KERBEROS_V5, AUTH_WHO_CLIENT|AUTH_HOW_MUTUAL, - kerberos5_init, - kerberos5_send_mutual, - kerberos5_is, - kerberos5_reply, - kerberos5_status, - kerberos5_printsub }, -# endif /* ENCRYPTION */ - { AUTHTYPE_KERBEROS_V5, AUTH_WHO_CLIENT|AUTH_HOW_ONE_WAY, - kerberos5_init, - kerberos5_send_oneway, - kerberos5_is, - kerberos5_reply, - kerberos5_status, - kerberos5_printsub }, -#endif -#ifdef KRB4 -# ifdef ENCRYPTION - { AUTHTYPE_KERBEROS_V4, AUTH_WHO_CLIENT|AUTH_HOW_MUTUAL, - kerberos4_init, - kerberos4_send, - kerberos4_is, - kerberos4_reply, - kerberos4_status, - kerberos4_printsub }, -# endif /* ENCRYPTION */ - { AUTHTYPE_KERBEROS_V4, AUTH_WHO_CLIENT|AUTH_HOW_ONE_WAY, - kerberos4_init, - kerberos4_send, - kerberos4_is, - kerberos4_reply, - kerberos4_status, - kerberos4_printsub }, -#endif -#ifdef KRB4_ENCPWD - { AUTHTYPE_KRB4_ENCPWD, AUTH_WHO_CLIENT|AUTH_HOW_MUTUAL, - krb4encpwd_init, - krb4encpwd_send, - krb4encpwd_is, - krb4encpwd_reply, - krb4encpwd_status, - krb4encpwd_printsub }, -#endif -#ifdef RSA_ENCPWD - { AUTHTYPE_RSA_ENCPWD, AUTH_WHO_CLIENT|AUTH_HOW_ONE_WAY, - rsaencpwd_init, - rsaencpwd_send, - rsaencpwd_is, - rsaencpwd_reply, - rsaencpwd_status, - rsaencpwd_printsub }, -#endif -#ifdef SRA - { AUTHTYPE_SRA, AUTH_WHO_CLIENT|AUTH_HOW_ONE_WAY, - sra_init, - sra_send, - sra_is, - sra_reply, - sra_status, - sra_printsub }, - -#endif - { 0, 0, 0, 0, 0, 0, 0, 0 }, -}; - -static Authenticator NoAuth = { 0, 0, 0, 0, 0, 0, 0, 0 }; - -static int i_support = 0; -static int i_wont_support = 0; - -Authenticator * -findauthenticator(int type, int way) -{ - Authenticator *ap = authenticators; - - while (ap->type && (ap->type != type || ap->way != way)) - ++ap; - return(ap->type ? ap : 0); -} - -void -auth_init(const char *name, int server) -{ - Authenticator *ap = authenticators; - - Server = server; - Name = name; - - i_support = 0; - authenticated = 0; - authenticating = 0; - while (ap->type) { - if (!ap->init || (*ap->init)(ap, server)) { - i_support |= typemask(ap->type); - if (auth_debug_mode) - printf(">>>%s: I support auth type %d %d\r\n", - Name, - ap->type, ap->way); - } - else if (auth_debug_mode) - printf(">>>%s: Init failed: auth type %d %d\r\n", - Name, ap->type, ap->way); - ++ap; - } -} - -void -auth_disable_name(char *name) -{ - int x; - for (x = 0; x < AUTHTYPE_CNT; ++x) { - if (AUTHTYPE_NAME(x) && !strcasecmp(name, AUTHTYPE_NAME(x))) { - i_wont_support |= typemask(x); - break; - } - } -} - -int -getauthmask(char *type, int *maskp) -{ - int x; - - if (AUTHTYPE_NAME(0) && !strcasecmp(type, AUTHTYPE_NAME(0))) { - *maskp = -1; - return(1); - } - - for (x = 1; x < AUTHTYPE_CNT; ++x) { - if (AUTHTYPE_NAME(x) && !strcasecmp(type, AUTHTYPE_NAME(x))) { - *maskp = typemask(x); - return(1); - } - } - return(0); -} - -int -auth_enable(char *type) -{ - return(auth_onoff(type, 1)); -} - -int -auth_disable(char *type) -{ - return(auth_onoff(type, 0)); -} - -int -auth_onoff(char *type, int on) -{ - int i, mask = -1; - Authenticator *ap; - - if (!strcasecmp(type, "?") || !strcasecmp(type, "help")) { - printf("auth %s 'type'\n", on ? "enable" : "disable"); - printf("Where 'type' is one of:\n"); - printf("\t%s\n", AUTHTYPE_NAME(0)); - mask = 0; - for (ap = authenticators; ap->type; ap++) { - if ((mask & (i = typemask(ap->type))) != 0) - continue; - mask |= i; - printf("\t%s\n", AUTHTYPE_NAME(ap->type)); - } - return(0); - } - - if (!getauthmask(type, &mask)) { - printf("%s: invalid authentication type\n", type); - return(0); - } - if (on) - i_wont_support &= ~mask; - else - i_wont_support |= mask; - return(1); -} - -int -auth_togdebug(int on) -{ - if (on < 0) - auth_debug_mode ^= 1; - else - auth_debug_mode = on; - printf("auth debugging %s\n", auth_debug_mode ? "enabled" : "disabled"); - return(1); -} - -int -auth_status(void) -{ - Authenticator *ap; - int i, mask; - - if (i_wont_support == -1) - printf("Authentication disabled\n"); - else - printf("Authentication enabled\n"); - - mask = 0; - for (ap = authenticators; ap->type; ap++) { - if ((mask & (i = typemask(ap->type))) != 0) - continue; - mask |= i; - printf("%s: %s\n", AUTHTYPE_NAME(ap->type), - (i_wont_support & typemask(ap->type)) ? - "disabled" : "enabled"); - } - return(1); -} - -/* - * This routine is called by the server to start authentication - * negotiation. - */ -void -auth_request(void) -{ - static unsigned char str_request[64] = { IAC, SB, - TELOPT_AUTHENTICATION, - TELQUAL_SEND, }; - Authenticator *ap = authenticators; - unsigned char *e = str_request + 4; - - if (!authenticating) { - authenticating = 1; - while (ap->type) { - if (i_support & ~i_wont_support & typemask(ap->type)) { - if (auth_debug_mode) { - printf(">>>%s: Sending type %d %d\r\n", - Name, ap->type, ap->way); - } - *e++ = ap->type; - *e++ = ap->way; - } - ++ap; - } - *e++ = IAC; - *e++ = SE; - net_write(str_request, e - str_request); - printsub('>', &str_request[2], e - str_request - 2); - } -} - -/* - * This is called when an AUTH SEND is received. - * It should never arrive on the server side (as only the server can - * send an AUTH SEND). - * You should probably respond to it if you can... - * - * If you want to respond to the types out of order (i.e. even - * if he sends LOGIN KERBEROS and you support both, you respond - * with KERBEROS instead of LOGIN (which is against what the - * protocol says)) you will have to hack this code... - */ -void -auth_send(unsigned char *data, int cnt) -{ - Authenticator *ap; - static unsigned char str_none[] = { IAC, SB, TELOPT_AUTHENTICATION, - TELQUAL_IS, AUTHTYPE_NULL, 0, - IAC, SE }; - if (Server) { - if (auth_debug_mode) { - printf(">>>%s: auth_send called!\r\n", Name); - } - return; - } - - if (auth_debug_mode) { - printf(">>>%s: auth_send got:", Name); - printd(data, cnt); printf("\r\n"); - } - - /* - * Save the data, if it is new, so that we can continue looking - * at it if the authorization we try doesn't work - */ - if (data < _auth_send_data || - data > _auth_send_data + sizeof(_auth_send_data)) { - auth_send_cnt = (size_t)cnt > sizeof(_auth_send_data) - ? sizeof(_auth_send_data) - : cnt; - memmove((void *)_auth_send_data, (void *)data, auth_send_cnt); - auth_send_data = _auth_send_data; - } else { - /* - * This is probably a no-op, but we just make sure - */ - auth_send_data = data; - auth_send_cnt = cnt; - } - while ((auth_send_cnt -= 2) >= 0) { - if (auth_debug_mode) - printf(">>>%s: He supports %d\r\n", - Name, *auth_send_data); - if ((i_support & ~i_wont_support) & typemask(*auth_send_data)) { - ap = findauthenticator(auth_send_data[0], - auth_send_data[1]); - if (ap && ap->send) { - if (auth_debug_mode) - printf(">>>%s: Trying %d %d\r\n", - Name, auth_send_data[0], - auth_send_data[1]); - if ((*ap->send)(ap)) { - /* - * Okay, we found one we like - * and did it. - * we can go home now. - */ - if (auth_debug_mode) - printf(">>>%s: Using type %d\r\n", - Name, *auth_send_data); - auth_send_data += 2; - return; - } - } - /* else - * just continue on and look for the - * next one if we didn't do anything. - */ - } - auth_send_data += 2; - } - net_write(str_none, sizeof(str_none)); - printsub('>', &str_none[2], sizeof(str_none) - 2); - if (auth_debug_mode) - printf(">>>%s: Sent failure message\r\n", Name); - auth_finished(0, AUTH_REJECT); -} - -void -auth_send_retry(void) -{ - /* - * if auth_send_cnt <= 0 then auth_send will end up rejecting - * the authentication and informing the other side of this. - */ - auth_send(auth_send_data, auth_send_cnt); -} - -void -auth_is(unsigned char *data, int cnt) -{ - Authenticator *ap; - - if (cnt < 2) - return; - - if (data[0] == AUTHTYPE_NULL) { - auth_finished(0, AUTH_REJECT); - return; - } - - if ((ap = findauthenticator(data[0], data[1]))) { - if (ap->is) - (*ap->is)(ap, data+2, cnt-2); - } else if (auth_debug_mode) - printf(">>>%s: Invalid authentication in IS: %d\r\n", - Name, *data); -} - -void -auth_reply(unsigned char *data, int cnt) -{ - Authenticator *ap; - - if (cnt < 2) - return; - - if ((ap = findauthenticator(data[0], data[1]))) { - if (ap->reply) - (*ap->reply)(ap, data+2, cnt-2); - } else if (auth_debug_mode) - printf(">>>%s: Invalid authentication in SEND: %d\r\n", - Name, *data); -} - -void -auth_name(unsigned char *data, int cnt) -{ - unsigned char savename[256]; - - if (cnt < 1) { - if (auth_debug_mode) - printf(">>>%s: Empty name in NAME\r\n", Name); - return; - } - if ((size_t)cnt > sizeof(savename) - 1) { - if (auth_debug_mode) - printf(">>>%s: Name in NAME (%d) exceeds %d length\r\n", - Name, cnt, (u_int)sizeof(savename)-1); - return; - } - memmove((void *)savename, (void *)data, cnt); - savename[cnt] = '\0'; /* Null terminate */ - if (auth_debug_mode) - printf(">>>%s: Got NAME [%s]\r\n", Name, savename); - auth_encrypt_user(savename); -} - -int -auth_sendname(unsigned char *cp, int len) -{ - static unsigned char str_request[256+6] - = { IAC, SB, TELOPT_AUTHENTICATION, TELQUAL_NAME, }; - unsigned char *e = str_request + 4; - unsigned char *ee = &str_request[sizeof(str_request)-2]; - - while (--len >= 0) { - if ((*e++ = *cp++) == IAC) - *e++ = IAC; - if (e >= ee) - return(0); - } - *e++ = IAC; - *e++ = SE; - net_write(str_request, e - str_request); - printsub('>', &str_request[2], e - &str_request[2]); - return(1); -} - -void -auth_finished(Authenticator *ap, int result) -{ - if (!(authenticated = ap)) - authenticated = &NoAuth; - validuser = result; -} - -/* ARGSUSED */ -static void -auth_intr(int sig __unused) -{ - auth_finished(0, AUTH_REJECT); -} - -int -auth_wait(char *name) -{ - if (auth_debug_mode) - printf(">>>%s: in auth_wait.\r\n", Name); - - if (Server && !authenticating) - return(0); - - (void) signal(SIGALRM, auth_intr); - alarm(30); - while (!authenticated) - if (telnet_spin()) - break; - alarm(0); - (void) signal(SIGALRM, SIG_DFL); - - /* - * Now check to see if the user is valid or not - */ - if (!authenticated || authenticated == &NoAuth) - return(AUTH_REJECT); - - if (validuser == AUTH_VALID) - validuser = AUTH_USER; - - if (authenticated->status) - validuser = (*authenticated->status)(authenticated, - name, validuser); - return(validuser); -} - -void -auth_printsub(unsigned char *data, int cnt, unsigned char *buf, int buflen) -{ - Authenticator *ap; - - if ((ap = findauthenticator(data[1], data[2])) && ap->printsub) - (*ap->printsub)(data, cnt, buf, buflen); - else - auth_gen_printsub(data, cnt, buf, buflen); -} - -void -auth_gen_printsub(unsigned char *data, int cnt, unsigned char *buf, int buflen) -{ - unsigned char *cp; - unsigned char tbuf[16]; - - cnt -= 3; - data += 3; - buf[buflen-1] = '\0'; - buf[buflen-2] = '*'; - buflen -= 2; - for (; cnt > 0; cnt--, data++) { - sprintf((char *)tbuf, " %d", *data); - for (cp = tbuf; *cp && buflen > 0; --buflen) - *buf++ = *cp++; - if (buflen <= 0) - return; - } - *buf = '\0'; -} -#endif diff --git a/libtelnet/auth.h b/libtelnet/auth.h deleted file mode 100644 index a8ee048..0000000 --- a/libtelnet/auth.h +++ /dev/null @@ -1,80 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)auth.h 8.1 (Berkeley) 6/4/93 - * $FreeBSD$ - */ - -/* - * Copyright (C) 1990 by the Massachusetts Institute of Technology - * - * Export of this software from the United States of America is assumed - * to require a specific license from the United States Government. - * It is the responsibility of any person or organization contemplating - * export to obtain such a license before exporting. - * - * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and - * distribute this software and its documentation for any purpose and - * without fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright notice and - * this permission notice appear in supporting documentation, and that - * the name of M.I.T. not be used in advertising or publicity pertaining - * to distribution of the software without specific, written prior - * permission. M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" without express - * or implied warranty. - */ - -#ifndef __AUTH__ -#define __AUTH__ - -#define AUTH_REJECT 0 /* Rejected */ -#define AUTH_UNKNOWN 1 /* We don't know who he is, but he's okay */ -#define AUTH_OTHER 2 /* We know him, but not his name */ -#define AUTH_USER 3 /* We know he name */ -#define AUTH_VALID 4 /* We know him, and he needs no password */ - -typedef struct XauthP { - int type; - int way; - int (*init)(struct XauthP *, int); - int (*send)(struct XauthP *); - void (*is)(struct XauthP *, unsigned char *, int); - void (*reply)(struct XauthP *, unsigned char *, int); - int (*status)(struct XauthP *, char *, int); - void (*printsub)(unsigned char *, int, unsigned char *, int); -} Authenticator; - -#include "auth-proto.h" - -extern int auth_debug_mode; -#endif diff --git a/libtelnet/enc-proto.h b/libtelnet/enc-proto.h deleted file mode 100644 index 46663c7..0000000 --- a/libtelnet/enc-proto.h +++ /dev/null @@ -1,126 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)enc-proto.h 8.1 (Berkeley) 6/4/93 - * $FreeBSD$ - */ - -/* - * Copyright (C) 1990 by the Massachusetts Institute of Technology - * - * Export of this software from the United States of America is assumed - * to require a specific license from the United States Government. - * It is the responsibility of any person or organization contemplating - * export to obtain such a license before exporting. - * - * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and - * distribute this software and its documentation for any purpose and - * without fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright notice and - * this permission notice appear in supporting documentation, and that - * the name of M.I.T. not be used in advertising or publicity pertaining - * to distribution of the software without specific, written prior - * permission. M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" without express - * or implied warranty. - */ - -#ifdef ENCRYPTION -void encrypt_init(const char *, int); -Encryptions *findencryption(int); -void encrypt_send_supprt(void); -void encrypt_auto(int); -void decrypt_auto(int); -void encrypt_is(unsigned char *, int); -void encrypt_reply(unsigned char *, int); -void encrypt_start_input(int); -void encrypt_session_key(Session_Key *, int); -void encrypt_end_input(void); -void encrypt_start_output(int); -void encrypt_end_output(void); -void encrypt_send_request_start(void); -void encrypt_send_request_end(void); -void encrypt_send_end(void); -void encrypt_wait(void); -void encrypt_send_support(void); -void encrypt_send_keyid(int, const char *, int, int); -void encrypt_start(unsigned char *, int); -void encrypt_end(void); -void encrypt_support(unsigned char *, int); -void encrypt_request_start(unsigned char *, int); -void encrypt_request_end(void); -void encrypt_enc_keyid(unsigned char *, int); -void encrypt_dec_keyid(unsigned char *, int); -void encrypt_printsub(unsigned char *, int, unsigned char *, int); -void encrypt_gen_printsub(unsigned char *, int, unsigned char *, int); -void encrypt_display(void); - -void fb64_printsub(unsigned char *, int, unsigned char *, int, const char *); - -int EncryptEnable(char *, char *); -int EncryptDisable(char *, char *); -int EncryptStatus(void); -int EncryptDebug(int); -int EncryptVerbose(int); -int EncryptAutoEnc(int); -int EncryptAutoDec(int); - -void krbdes_encrypt(unsigned char *, int); -int krbdes_decrypt(int); -int krbdes_is(unsigned char *, int); -int krbdes_reply(unsigned char *, int); -void krbdes_init(int); -int krbdes_start(int, int); -void krbdes_session(Session_Key *, int); -void krbdes_printsub(unsigned char *, int, unsigned char *, int); - -void cfb64_encrypt(unsigned char *, int); -int cfb64_decrypt(int); -void cfb64_init(int); -int cfb64_start(int, int); -int cfb64_is(unsigned char *, int); -int cfb64_reply(unsigned char *, int); -void cfb64_session(Session_Key *, int); -int cfb64_keyid(int, unsigned char *, int *); -void cfb64_printsub(unsigned char *, int, unsigned char *, int); - -void ofb64_encrypt(unsigned char *, int); -int ofb64_decrypt(int); -void ofb64_init(int); -int ofb64_start(int, int); -int ofb64_is(unsigned char *, int); -int ofb64_reply(unsigned char *, int); -void ofb64_session(Session_Key *, int); -int ofb64_keyid(int, unsigned char *, int *); -void ofb64_printsub(unsigned char *, int, unsigned char *, int); - -#endif /* ENCRYPTION */ diff --git a/libtelnet/enc_des.c b/libtelnet/enc_des.c deleted file mode 100644 index 126c3e0..0000000 --- a/libtelnet/enc_des.c +++ /dev/null @@ -1,662 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#if 0 -#ifndef lint -static const char sccsid[] = "@(#)enc_des.c 8.3 (Berkeley) 5/30/95"; -#endif /* not lint */ -#endif -#include - - -#ifdef ENCRYPTION -# ifdef AUTHENTICATION -#include "arpa/telnet.h" -#include -#include -#include -#include - -#include "encrypt.h" -#include "key-proto.h" -#include "misc-proto.h" - -extern int encrypt_debug_mode; - -#define CFB 0 -#define OFB 1 - -#define NO_SEND_IV 1 -#define NO_RECV_IV 2 -#define NO_KEYID 4 -#define IN_PROGRESS (NO_SEND_IV|NO_RECV_IV|NO_KEYID) -#define SUCCESS 0 -#define FAILED -1 - - -struct fb { - Block krbdes_key; - Schedule krbdes_sched; - Block temp_feed; - unsigned char fb_feed[64]; - int need_start; - int state[2]; - int keyid[2]; - struct stinfo { - Block str_output; - Block str_feed; - Block str_iv; - Block str_ikey; - Schedule str_sched; - int str_index; - int str_flagshift; - } streams[2]; -}; - -static struct fb fb[2]; - -struct keyidlist { - const char *keyid; - int keyidlen; - char *key; - int keylen; - int flags; -} keyidlist [] = { - { "\0", 1, 0, 0, 0 }, /* default key of zero */ - { 0, 0, 0, 0, 0 } -}; - -#define KEYFLAG_MASK 03 - -#define KEYFLAG_NOINIT 00 -#define KEYFLAG_INIT 01 -#define KEYFLAG_OK 02 -#define KEYFLAG_BAD 03 - -#define KEYFLAG_SHIFT 2 - -#define SHIFT_VAL(a,b) (KEYFLAG_SHIFT*((a)+((b)*2))) - -#define FB64_IV 1 -#define FB64_IV_OK 2 -#define FB64_IV_BAD 3 - - -void fb64_stream_iv(Block, struct stinfo *); -void fb64_init(struct fb *); -static int fb64_start(struct fb *, int, int); -int fb64_is(unsigned char *, int, struct fb *); -int fb64_reply(unsigned char *, int, struct fb *); -static void fb64_session(Session_Key *, int, struct fb *); -void fb64_stream_key(Block, struct stinfo *); -int fb64_keyid(int, unsigned char *, int *, struct fb *); - -void -cfb64_init(int server __unused) -{ - fb64_init(&fb[CFB]); - fb[CFB].fb_feed[4] = ENCTYPE_DES_CFB64; - fb[CFB].streams[0].str_flagshift = SHIFT_VAL(0, CFB); - fb[CFB].streams[1].str_flagshift = SHIFT_VAL(1, CFB); -} - -void -ofb64_init(int server __unused) -{ - fb64_init(&fb[OFB]); - fb[OFB].fb_feed[4] = ENCTYPE_DES_OFB64; - fb[CFB].streams[0].str_flagshift = SHIFT_VAL(0, OFB); - fb[CFB].streams[1].str_flagshift = SHIFT_VAL(1, OFB); -} - -void -fb64_init(struct fb *fbp) -{ - memset((void *)fbp, 0, sizeof(*fbp)); - fbp->state[0] = fbp->state[1] = FAILED; - fbp->fb_feed[0] = IAC; - fbp->fb_feed[1] = SB; - fbp->fb_feed[2] = TELOPT_ENCRYPT; - fbp->fb_feed[3] = ENCRYPT_IS; -} - -/* - * Returns: - * -1: some error. Negotiation is done, encryption not ready. - * 0: Successful, initial negotiation all done. - * 1: successful, negotiation not done yet. - * 2: Not yet. Other things (like getting the key from - * Kerberos) have to happen before we can continue. - */ -int -cfb64_start(int dir, int server) -{ - return(fb64_start(&fb[CFB], dir, server)); -} - -int -ofb64_start(int dir, int server) -{ - return(fb64_start(&fb[OFB], dir, server)); -} - -static int -fb64_start(struct fb *fbp, int dir, int server __unused) -{ - size_t x; - unsigned char *p; - int state; - - switch (dir) { - case DIR_DECRYPT: - /* - * This is simply a request to have the other side - * start output (our input). He will negotiate an - * IV so we need not look for it. - */ - state = fbp->state[dir-1]; - if (state == FAILED) - state = IN_PROGRESS; - break; - - case DIR_ENCRYPT: - state = fbp->state[dir-1]; - if (state == FAILED) - state = IN_PROGRESS; - else if ((state & NO_SEND_IV) == 0) - break; - - if (!VALIDKEY(fbp->krbdes_key)) { - fbp->need_start = 1; - break; - } - state &= ~NO_SEND_IV; - state |= NO_RECV_IV; - if (encrypt_debug_mode) - printf("Creating new feed\r\n"); - /* - * Create a random feed and send it over. - */ - des_random_key((Block *)fbp->temp_feed); - des_ecb_encrypt((Block *)fbp->temp_feed, (Block *)fbp->temp_feed, - fbp->krbdes_sched, 1); - p = fbp->fb_feed + 3; - *p++ = ENCRYPT_IS; - p++; - *p++ = FB64_IV; - for (x = 0; x < sizeof(Block); ++x) { - if ((*p++ = fbp->temp_feed[x]) == IAC) - *p++ = IAC; - } - *p++ = IAC; - *p++ = SE; - printsub('>', &fbp->fb_feed[2], p - &fbp->fb_feed[2]); - net_write(fbp->fb_feed, p - fbp->fb_feed); - break; - default: - return(FAILED); - } - return(fbp->state[dir-1] = state); -} - -/* - * Returns: - * -1: some error. Negotiation is done, encryption not ready. - * 0: Successful, initial negotiation all done. - * 1: successful, negotiation not done yet. - */ -int -cfb64_is(unsigned char *data, int cnt) -{ - return(fb64_is(data, cnt, &fb[CFB])); -} - -int -ofb64_is(unsigned char *data, int cnt) -{ - return(fb64_is(data, cnt, &fb[OFB])); -} - -int -fb64_is(unsigned char *data, int cnt, struct fb *fbp) -{ - unsigned char *p; - int state = fbp->state[DIR_DECRYPT-1]; - - if (cnt-- < 1) - goto failure; - - switch (*data++) { - case FB64_IV: - if (cnt != sizeof(Block)) { - if (encrypt_debug_mode) - printf("CFB64: initial vector failed on size\r\n"); - state = FAILED; - goto failure; - } - - if (encrypt_debug_mode) - printf("CFB64: initial vector received\r\n"); - - if (encrypt_debug_mode) - printf("Initializing Decrypt stream\r\n"); - - fb64_stream_iv((void *)data, &fbp->streams[DIR_DECRYPT-1]); - - p = fbp->fb_feed + 3; - *p++ = ENCRYPT_REPLY; - p++; - *p++ = FB64_IV_OK; - *p++ = IAC; - *p++ = SE; - printsub('>', &fbp->fb_feed[2], p - &fbp->fb_feed[2]); - net_write(fbp->fb_feed, p - fbp->fb_feed); - - state = fbp->state[DIR_DECRYPT-1] = IN_PROGRESS; - break; - - default: - if (encrypt_debug_mode) { - printf("Unknown option type: %d\r\n", *(data-1)); - printd(data, cnt); - printf("\r\n"); - } - /* FALL THROUGH */ - failure: - /* - * We failed. Send an FB64_IV_BAD option - * to the other side so it will know that - * things failed. - */ - p = fbp->fb_feed + 3; - *p++ = ENCRYPT_REPLY; - p++; - *p++ = FB64_IV_BAD; - *p++ = IAC; - *p++ = SE; - printsub('>', &fbp->fb_feed[2], p - &fbp->fb_feed[2]); - net_write(fbp->fb_feed, p - fbp->fb_feed); - - break; - } - return(fbp->state[DIR_DECRYPT-1] = state); -} - -/* - * Returns: - * -1: some error. Negotiation is done, encryption not ready. - * 0: Successful, initial negotiation all done. - * 1: successful, negotiation not done yet. - */ -int -cfb64_reply(unsigned char *data, int cnt) -{ - return(fb64_reply(data, cnt, &fb[CFB])); -} - -int -ofb64_reply(unsigned char *data, int cnt) -{ - return(fb64_reply(data, cnt, &fb[OFB])); -} - -int -fb64_reply(unsigned char *data, int cnt, struct fb *fbp) -{ - int state = fbp->state[DIR_ENCRYPT-1]; - - if (cnt-- < 1) - goto failure; - - switch (*data++) { - case FB64_IV_OK: - fb64_stream_iv(fbp->temp_feed, &fbp->streams[DIR_ENCRYPT-1]); - if (state == FAILED) - state = IN_PROGRESS; - state &= ~NO_RECV_IV; - encrypt_send_keyid(DIR_ENCRYPT, "\0", 1, 1); - break; - - case FB64_IV_BAD: - memset(fbp->temp_feed, 0, sizeof(Block)); - fb64_stream_iv(fbp->temp_feed, &fbp->streams[DIR_ENCRYPT-1]); - state = FAILED; - break; - - default: - if (encrypt_debug_mode) { - printf("Unknown option type: %d\r\n", data[-1]); - printd(data, cnt); - printf("\r\n"); - } - /* FALL THROUGH */ - failure: - state = FAILED; - break; - } - return(fbp->state[DIR_ENCRYPT-1] = state); -} - -void -cfb64_session(Session_Key *key, int server) -{ - fb64_session(key, server, &fb[CFB]); -} - -void -ofb64_session(Session_Key *key, int server) -{ - fb64_session(key, server, &fb[OFB]); -} - -static void -fb64_session(Session_Key *key, int server, struct fb *fbp) -{ - if (!key || key->type != SK_DES) { - if (encrypt_debug_mode) - printf("Can't set krbdes's session key (%d != %d)\r\n", - key ? key->type : -1, SK_DES); - return; - } - memmove((void *)fbp->krbdes_key, (void *)key->data, sizeof(Block)); - - fb64_stream_key(fbp->krbdes_key, &fbp->streams[DIR_ENCRYPT-1]); - fb64_stream_key(fbp->krbdes_key, &fbp->streams[DIR_DECRYPT-1]); - - des_key_sched((Block *)fbp->krbdes_key, fbp->krbdes_sched); - /* - * Now look to see if krbdes_start() was was waiting for - * the key to show up. If so, go ahead an call it now - * that we have the key. - */ - if (fbp->need_start) { - fbp->need_start = 0; - fb64_start(fbp, DIR_ENCRYPT, server); - } -} - -/* - * We only accept a keyid of 0. If we get a keyid of - * 0, then mark the state as SUCCESS. - */ -int -cfb64_keyid(int dir, unsigned char *kp, int *lenp) -{ - return(fb64_keyid(dir, kp, lenp, &fb[CFB])); -} - -int -ofb64_keyid(int dir, unsigned char *kp, int *lenp) -{ - return(fb64_keyid(dir, kp, lenp, &fb[OFB])); -} - -int -fb64_keyid(int dir, unsigned char *kp, int *lenp, struct fb *fbp) -{ - int state = fbp->state[dir-1]; - - if (*lenp != 1 || (*kp != '\0')) { - *lenp = 0; - return(state); - } - - if (state == FAILED) - state = IN_PROGRESS; - - state &= ~NO_KEYID; - - return(fbp->state[dir-1] = state); -} - -void -fb64_printsub(unsigned char *data, int cnt, unsigned char *buf, int buflen, const char *type) -{ - char lbuf[32]; - int i; - char *cp; - - buf[buflen-1] = '\0'; /* make sure it's NULL terminated */ - buflen -= 1; - - switch(data[2]) { - case FB64_IV: - sprintf(lbuf, "%s_IV", type); - cp = lbuf; - goto common; - - case FB64_IV_OK: - sprintf(lbuf, "%s_IV_OK", type); - cp = lbuf; - goto common; - - case FB64_IV_BAD: - sprintf(lbuf, "%s_IV_BAD", type); - cp = lbuf; - goto common; - - default: - sprintf(lbuf, " %d (unknown)", data[2]); - cp = lbuf; - common: - for (; (buflen > 0) && (*buf = *cp++); buf++) - buflen--; - for (i = 3; i < cnt; i++) { - sprintf(lbuf, " %d", data[i]); - for (cp = lbuf; (buflen > 0) && (*buf = *cp++); buf++) - buflen--; - } - break; - } -} - -void -cfb64_printsub(unsigned char *data, int cnt, unsigned char *buf, int buflen) -{ - fb64_printsub(data, cnt, buf, buflen, "CFB64"); -} - -void -ofb64_printsub(unsigned char *data, int cnt, unsigned char *buf, int buflen) -{ - fb64_printsub(data, cnt, buf, buflen, "OFB64"); -} - -void -fb64_stream_iv(Block seed, struct stinfo *stp) -{ - - memmove((void *)stp->str_iv, (void *)seed, sizeof(Block)); - memmove((void *)stp->str_output, (void *)seed, sizeof(Block)); - - des_key_sched((Block *)stp->str_ikey, stp->str_sched); - - stp->str_index = sizeof(Block); -} - -void -fb64_stream_key(Block key, struct stinfo *stp) -{ - memmove((void *)stp->str_ikey, (void *)key, sizeof(Block)); - des_key_sched((Block *)key, stp->str_sched); - - memmove((void *)stp->str_output, (void *)stp->str_iv, sizeof(Block)); - - stp->str_index = sizeof(Block); -} - -/* - * DES 64 bit Cipher Feedback - * - * key --->+-----+ - * +->| DES |--+ - * | +-----+ | - * | v - * INPUT --(--------->(+)+---> DATA - * | | - * +-------------+ - * - * - * Given: - * iV: Initial vector, 64 bits (8 bytes) long. - * Dn: the nth chunk of 64 bits (8 bytes) of data to encrypt (decrypt). - * On: the nth chunk of 64 bits (8 bytes) of encrypted (decrypted) output. - * - * V0 = DES(iV, key) - * On = Dn ^ Vn - * V(n+1) = DES(On, key) - */ - -void -cfb64_encrypt(unsigned char *s, int c) -{ - struct stinfo *stp = &fb[CFB].streams[DIR_ENCRYPT-1]; - int idx; - - idx = stp->str_index; - while (c-- > 0) { - if (idx == sizeof(Block)) { - Block b; - des_ecb_encrypt((Block *)stp->str_output, (Block *)b, stp->str_sched, 1); - memmove((void *)stp->str_feed, (void *)b, sizeof(Block)); - idx = 0; - } - - /* On encryption, we store (feed ^ data) which is cypher */ - *s = stp->str_output[idx] = (stp->str_feed[idx] ^ *s); - s++; - idx++; - } - stp->str_index = idx; -} - -int -cfb64_decrypt(int data) -{ - struct stinfo *stp = &fb[CFB].streams[DIR_DECRYPT-1]; - int idx; - - if (data == -1) { - /* - * Back up one byte. It is assumed that we will - * never back up more than one byte. If we do, this - * may or may not work. - */ - if (stp->str_index) - --stp->str_index; - return(0); - } - - idx = stp->str_index++; - if (idx == sizeof(Block)) { - Block b; - des_ecb_encrypt((Block *)stp->str_output, (Block *)b, stp->str_sched, 1); - memmove((void *)stp->str_feed, (void *)b, sizeof(Block)); - stp->str_index = 1; /* Next time will be 1 */ - idx = 0; /* But now use 0 */ - } - - /* On decryption we store (data) which is cypher. */ - stp->str_output[idx] = data; - return(data ^ stp->str_feed[idx]); -} - -/* - * DES 64 bit Output Feedback - * - * key --->+-----+ - * +->| DES |--+ - * | +-----+ | - * +-----------+ - * v - * INPUT -------->(+) ----> DATA - * - * Given: - * iV: Initial vector, 64 bits (8 bytes) long. - * Dn: the nth chunk of 64 bits (8 bytes) of data to encrypt (decrypt). - * On: the nth chunk of 64 bits (8 bytes) of encrypted (decrypted) output. - * - * V0 = DES(iV, key) - * V(n+1) = DES(Vn, key) - * On = Dn ^ Vn - */ -void -ofb64_encrypt(unsigned char *s, int c) -{ - struct stinfo *stp = &fb[OFB].streams[DIR_ENCRYPT-1]; - int idx; - - idx = stp->str_index; - while (c-- > 0) { - if (idx == sizeof(Block)) { - Block b; - des_ecb_encrypt((Block *)stp->str_feed, (Block *)b, stp->str_sched, 1); - memmove((void *)stp->str_feed, (void *)b, sizeof(Block)); - idx = 0; - } - *s++ ^= stp->str_feed[idx]; - idx++; - } - stp->str_index = idx; -} - -int -ofb64_decrypt(int data) -{ - struct stinfo *stp = &fb[OFB].streams[DIR_DECRYPT-1]; - int idx; - - if (data == -1) { - /* - * Back up one byte. It is assumed that we will - * never back up more than one byte. If we do, this - * may or may not work. - */ - if (stp->str_index) - --stp->str_index; - return(0); - } - - idx = stp->str_index++; - if (idx == sizeof(Block)) { - Block b; - des_ecb_encrypt((Block *)stp->str_feed, (Block *)b, stp->str_sched, 1); - memmove((void *)stp->str_feed, (void *)b, sizeof(Block)); - stp->str_index = 1; /* Next time will be 1 */ - idx = 0; /* But now use 0 */ - } - - return(data ^ stp->str_feed[idx]); -} -# endif /* AUTHENTICATION */ -#endif /* ENCRYPTION */ diff --git a/libtelnet/encrypt.c b/libtelnet/encrypt.c deleted file mode 100644 index 0635d3f..0000000 --- a/libtelnet/encrypt.c +++ /dev/null @@ -1,956 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include - - - -#ifndef lint -#if 0 -static const char sccsid[] = "@(#)encrypt.c 8.2 (Berkeley) 5/30/95"; -#endif -#endif /* not lint */ - -/* - * Copyright (C) 1990 by the Massachusetts Institute of Technology - * - * Export of this software from the United States of America is assumed - * to require a specific license from the United States Government. - * It is the responsibility of any person or organization contemplating - * export to obtain such a license before exporting. - * - * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and - * distribute this software and its documentation for any purpose and - * without fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright notice and - * this permission notice appear in supporting documentation, and that - * the name of M.I.T. not be used in advertising or publicity pertaining - * to distribution of the software without specific, written prior - * permission. M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" without express - * or implied warranty. - */ - -#ifdef ENCRYPTION - -#include -#define ENCRYPT_NAMES -#include "arpa/telnet.h" -#include -#include -#include - -#include "encrypt.h" -#include "misc.h" - -/* - * These functions pointers point to the current routines - * for encrypting and decrypting data. - */ -void (*encrypt_output)(unsigned char *, int); -int (*decrypt_input)(int); - -int EncryptType(char *type, char *mode); -int EncryptStart(char *mode); -int EncryptStop(char *mode); -int EncryptStartInput(void); -int EncryptStartOutput(void); -int EncryptStopInput(void); -int EncryptStopOutput(void); - -int encrypt_debug_mode = 0; -static int decrypt_mode = 0; -static int encrypt_mode = 0; -static int encrypt_verbose = 0; -static int autoencrypt = 0; -static int autodecrypt = 0; -static int havesessionkey = 0; -static int Server = 0; -static const char *Name = "Noname"; - -#define typemask(x) ((x) > 0 ? 1 << ((x)-1) : 0) - -static u_long i_support_encrypt = 0 - | typemask(ENCTYPE_DES_CFB64) | typemask(ENCTYPE_DES_OFB64) - |0; -static u_long i_support_decrypt = 0 - | typemask(ENCTYPE_DES_CFB64) | typemask(ENCTYPE_DES_OFB64) - |0; - -static u_long i_wont_support_encrypt = 0; -static u_long i_wont_support_decrypt = 0; -#define I_SUPPORT_ENCRYPT (i_support_encrypt & ~i_wont_support_encrypt) -#define I_SUPPORT_DECRYPT (i_support_decrypt & ~i_wont_support_decrypt) - -static u_long remote_supports_encrypt = 0; -static u_long remote_supports_decrypt = 0; - -static Encryptions encryptions[] = { - { "DES_CFB64", ENCTYPE_DES_CFB64, - cfb64_encrypt, - cfb64_decrypt, - cfb64_init, - cfb64_start, - cfb64_is, - cfb64_reply, - cfb64_session, - cfb64_keyid, - cfb64_printsub }, - { "DES_OFB64", ENCTYPE_DES_OFB64, - ofb64_encrypt, - ofb64_decrypt, - ofb64_init, - ofb64_start, - ofb64_is, - ofb64_reply, - ofb64_session, - ofb64_keyid, - ofb64_printsub }, - { NULL, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, -}; - -static unsigned char str_send[64] = { IAC, SB, TELOPT_ENCRYPT, - ENCRYPT_SUPPORT }; -static unsigned char str_suplen = 0; -static unsigned char str_start[72] = { IAC, SB, TELOPT_ENCRYPT }; -static unsigned char str_end[] = { IAC, SB, TELOPT_ENCRYPT, 0, IAC, SE }; - -Encryptions * -findencryption(int type) -{ - Encryptions *ep = encryptions; - - if (!(I_SUPPORT_ENCRYPT & remote_supports_decrypt & (unsigned)typemask(type))) - return(0); - while (ep->type && ep->type != type) - ++ep; - return(ep->type ? ep : 0); -} - -static Encryptions * -finddecryption(int type) -{ - Encryptions *ep = encryptions; - - if (!(I_SUPPORT_DECRYPT & remote_supports_encrypt & (unsigned)typemask(type))) - return(0); - while (ep->type && ep->type != type) - ++ep; - return(ep->type ? ep : 0); -} - -#define MAXKEYLEN 64 - -static struct key_info { - unsigned char keyid[MAXKEYLEN]; - int keylen; - int dir; - int *modep; - Encryptions *(*getcrypt)(int); -} ki[2] = { - { { 0 }, 0, DIR_ENCRYPT, &encrypt_mode, findencryption }, - { { 0 }, 0, DIR_DECRYPT, &decrypt_mode, finddecryption }, -}; - -static void encrypt_keyid(struct key_info *kp, unsigned char *keyid, int len); - -void -encrypt_init(const char *name, int server) -{ - Encryptions *ep = encryptions; - - Name = name; - Server = server; - i_support_encrypt = i_support_decrypt = 0; - remote_supports_encrypt = remote_supports_decrypt = 0; - encrypt_mode = 0; - decrypt_mode = 0; - encrypt_output = 0; - decrypt_input = 0; - - str_suplen = 4; - - while (ep->type) { - if (encrypt_debug_mode) - printf(">>>%s: I will support %s\r\n", - Name, ENCTYPE_NAME(ep->type)); - i_support_encrypt |= typemask(ep->type); - i_support_decrypt |= typemask(ep->type); - if ((i_wont_support_decrypt & typemask(ep->type)) == 0) - if ((str_send[str_suplen++] = ep->type) == IAC) - str_send[str_suplen++] = IAC; - if (ep->init) - (*ep->init)(Server); - ++ep; - } - str_send[str_suplen++] = IAC; - str_send[str_suplen++] = SE; -} - -static void -encrypt_list_types(void) -{ - Encryptions *ep = encryptions; - - printf("Valid encryption types:\n"); - while (ep->type) { - printf("\t%s (%d)\r\n", ENCTYPE_NAME(ep->type), ep->type); - ++ep; - } -} - -int -EncryptEnable(char *type, char *mode) -{ - if (isprefix(type, "help") || isprefix(type, "?")) { - printf("Usage: encrypt enable [input|output]\n"); - encrypt_list_types(); - return(0); - } - if (EncryptType(type, mode)) - return(EncryptStart(mode)); - return(0); -} - -int -EncryptDisable(char *type, char *mode) -{ - Encryptions *ep; - int ret = 0; - - if (isprefix(type, "help") || isprefix(type, "?")) { - printf("Usage: encrypt disable [input|output]\n"); - encrypt_list_types(); - } else if ((ep = (Encryptions *)genget(type, (char **)encryptions, - sizeof(Encryptions))) == 0) { - printf("%s: invalid encryption type\n", type); - } else if (Ambiguous((char **)ep)) { - printf("Ambiguous type '%s'\n", type); - } else { - if ((mode == 0) || (isprefix(mode, "input") ? 1 : 0)) { - if (decrypt_mode == ep->type) - EncryptStopInput(); - i_wont_support_decrypt |= typemask(ep->type); - ret = 1; - } - if ((mode == 0) || (isprefix(mode, "output"))) { - if (encrypt_mode == ep->type) - EncryptStopOutput(); - i_wont_support_encrypt |= typemask(ep->type); - ret = 1; - } - if (ret == 0) - printf("%s: invalid encryption mode\n", mode); - } - return(ret); -} - -int -EncryptType(char *type, char *mode) -{ - Encryptions *ep; - int ret = 0; - - if (isprefix(type, "help") || isprefix(type, "?")) { - printf("Usage: encrypt type [input|output]\n"); - encrypt_list_types(); - } else if ((ep = (Encryptions *)genget(type, (char **)encryptions, - sizeof(Encryptions))) == 0) { - printf("%s: invalid encryption type\n", type); - } else if (Ambiguous((char **)ep)) { - printf("Ambiguous type '%s'\n", type); - } else { - if ((mode == 0) || isprefix(mode, "input")) { - decrypt_mode = ep->type; - i_wont_support_decrypt &= ~typemask(ep->type); - ret = 1; - } - if ((mode == 0) || isprefix(mode, "output")) { - encrypt_mode = ep->type; - i_wont_support_encrypt &= ~typemask(ep->type); - ret = 1; - } - if (ret == 0) - printf("%s: invalid encryption mode\n", mode); - } - return(ret); -} - -int -EncryptStart(char *mode) -{ - int ret = 0; - if (mode) { - if (isprefix(mode, "input")) - return(EncryptStartInput()); - if (isprefix(mode, "output")) - return(EncryptStartOutput()); - if (isprefix(mode, "help") || isprefix(mode, "?")) { - printf("Usage: encrypt start [input|output]\n"); - return(0); - } - printf("%s: invalid encryption mode 'encrypt start ?' for help\n", mode); - return(0); - } - ret += EncryptStartInput(); - ret += EncryptStartOutput(); - return(ret); -} - -int -EncryptStartInput(void) -{ - if (decrypt_mode) { - encrypt_send_request_start(); - return(1); - } - printf("No previous decryption mode, decryption not enabled\r\n"); - return(0); -} - -int -EncryptStartOutput(void) -{ - if (encrypt_mode) { - encrypt_start_output(encrypt_mode); - return(1); - } - printf("No previous encryption mode, encryption not enabled\r\n"); - return(0); -} - -int -EncryptStop(char *mode) -{ - int ret = 0; - if (mode) { - if (isprefix(mode, "input")) - return(EncryptStopInput()); - if (isprefix(mode, "output")) - return(EncryptStopOutput()); - if (isprefix(mode, "help") || isprefix(mode, "?")) { - printf("Usage: encrypt stop [input|output]\n"); - return(0); - } - printf("%s: invalid encryption mode 'encrypt stop ?' for help\n", mode); - return(0); - } - ret += EncryptStopInput(); - ret += EncryptStopOutput(); - return(ret); -} - -int -EncryptStopInput(void) -{ - encrypt_send_request_end(); - return(1); -} - -int -EncryptStopOutput(void) -{ - encrypt_send_end(); - return(1); -} - -void -encrypt_display(void) -{ - if (encrypt_output) - printf("Currently encrypting output with %s\r\n", - ENCTYPE_NAME(encrypt_mode)); - if (decrypt_input) - printf("Currently decrypting input with %s\r\n", - ENCTYPE_NAME(decrypt_mode)); -} - -int -EncryptStatus(void) -{ - if (encrypt_output) - printf("Currently encrypting output with %s\r\n", - ENCTYPE_NAME(encrypt_mode)); - else if (encrypt_mode) { - printf("Currently output is clear text.\r\n"); - printf("Last encryption mode was %s\r\n", - ENCTYPE_NAME(encrypt_mode)); - } - if (decrypt_input) { - printf("Currently decrypting input with %s\r\n", - ENCTYPE_NAME(decrypt_mode)); - } else if (decrypt_mode) { - printf("Currently input is clear text.\r\n"); - printf("Last decryption mode was %s\r\n", - ENCTYPE_NAME(decrypt_mode)); - } - return 1; -} - -void -encrypt_send_support(void) -{ - if (str_suplen) { - /* - * If the user has requested that decryption start - * immediatly, then send a "REQUEST START" before - * we negotiate the type. - */ - if (!Server && autodecrypt) - encrypt_send_request_start(); - net_write(str_send, str_suplen); - printsub('>', &str_send[2], str_suplen - 2); - str_suplen = 0; - } -} - -int -EncryptDebug(int on) -{ - if (on < 0) - encrypt_debug_mode ^= 1; - else - encrypt_debug_mode = on; - printf("Encryption debugging %s\r\n", - encrypt_debug_mode ? "enabled" : "disabled"); - return(1); -} - -int -EncryptVerbose(int on) -{ - if (on < 0) - encrypt_verbose ^= 1; - else - encrypt_verbose = on; - printf("Encryption %s verbose\r\n", - encrypt_verbose ? "is" : "is not"); - return(1); -} - -int -EncryptAutoEnc(int on) -{ - encrypt_auto(on); - printf("Automatic encryption of output is %s\r\n", - autoencrypt ? "enabled" : "disabled"); - return(1); -} - -int -EncryptAutoDec(int on) -{ - decrypt_auto(on); - printf("Automatic decryption of input is %s\r\n", - autodecrypt ? "enabled" : "disabled"); - return(1); -} - -/* - * Called when ENCRYPT SUPPORT is received. - */ -void -encrypt_support(unsigned char *typelist, int cnt) -{ - int type, use_type = 0; - Encryptions *ep; - - /* - * Forget anything the other side has previously told us. - */ - remote_supports_decrypt = 0; - - while (cnt-- > 0) { - type = *typelist++; - if (encrypt_debug_mode) - printf(">>>%s: He is supporting %s (%d)\r\n", - Name, - ENCTYPE_NAME(type), type); - if ((type < ENCTYPE_CNT) && - (I_SUPPORT_ENCRYPT & typemask(type))) { - remote_supports_decrypt |= typemask(type); - if (use_type == 0) - use_type = type; - } - } - if (use_type) { - ep = findencryption(use_type); - if (!ep) - return; - type = ep->start ? (*ep->start)(DIR_ENCRYPT, Server) : 0; - if (encrypt_debug_mode) - printf(">>>%s: (*ep->start)() returned %d\r\n", - Name, type); - if (type < 0) - return; - encrypt_mode = use_type; - if (type == 0) - encrypt_start_output(use_type); - } -} - -void -encrypt_is(unsigned char *data, int cnt) -{ - Encryptions *ep; - int type, ret; - - if (--cnt < 0) - return; - type = *data++; - if (type < ENCTYPE_CNT) - remote_supports_encrypt |= typemask(type); - if (!(ep = finddecryption(type))) { - if (encrypt_debug_mode) - printf(">>>%s: Can't find type %s (%d) for initial negotiation\r\n", - Name, - ENCTYPE_NAME_OK(type) - ? ENCTYPE_NAME(type) : "(unknown)", - type); - return; - } - if (!ep->is) { - if (encrypt_debug_mode) - printf(">>>%s: No initial negotiation needed for type %s (%d)\r\n", - Name, - ENCTYPE_NAME_OK(type) - ? ENCTYPE_NAME(type) : "(unknown)", - type); - ret = 0; - } else { - ret = (*ep->is)(data, cnt); - if (encrypt_debug_mode) - printf("(*ep->is)(%p, %d) returned %s(%d)\n", data, cnt, - (ret < 0) ? "FAIL " : - (ret == 0) ? "SUCCESS " : "MORE_TO_DO ", ret); - } - if (ret < 0) { - autodecrypt = 0; - } else { - decrypt_mode = type; - if (ret == 0 && autodecrypt) - encrypt_send_request_start(); - } -} - -void -encrypt_reply(unsigned char *data, int cnt) -{ - Encryptions *ep; - int ret, type; - - if (--cnt < 0) - return; - type = *data++; - if (!(ep = findencryption(type))) { - if (encrypt_debug_mode) - printf(">>>%s: Can't find type %s (%d) for initial negotiation\r\n", - Name, - ENCTYPE_NAME_OK(type) - ? ENCTYPE_NAME(type) : "(unknown)", - type); - return; - } - if (!ep->reply) { - if (encrypt_debug_mode) - printf(">>>%s: No initial negotiation needed for type %s (%d)\r\n", - Name, - ENCTYPE_NAME_OK(type) - ? ENCTYPE_NAME(type) : "(unknown)", - type); - ret = 0; - } else { - ret = (*ep->reply)(data, cnt); - if (encrypt_debug_mode) - printf("(*ep->reply)(%p, %d) returned %s(%d)\n", - data, cnt, - (ret < 0) ? "FAIL " : - (ret == 0) ? "SUCCESS " : "MORE_TO_DO ", ret); - } - if (encrypt_debug_mode) - printf(">>>%s: encrypt_reply returned %d\n", Name, ret); - if (ret < 0) { - autoencrypt = 0; - } else { - encrypt_mode = type; - if (ret == 0 && autoencrypt) - encrypt_start_output(type); - } -} - -/* - * Called when a ENCRYPT START command is received. - */ -void -encrypt_start(unsigned char *data __unused, int cnt __unused) -{ - Encryptions *ep; - - if (!decrypt_mode) { - /* - * Something is wrong. We should not get a START - * command without having already picked our - * decryption scheme. Send a REQUEST-END to - * attempt to clear the channel... - */ - printf("%s: Warning, Cannot decrypt input stream!!!\r\n", Name); - encrypt_send_request_end(); - return; - } - - if ((ep = finddecryption(decrypt_mode))) { - decrypt_input = ep->input; - if (encrypt_verbose) - printf("[ Input is now decrypted with type %s ]\r\n", - ENCTYPE_NAME(decrypt_mode)); - if (encrypt_debug_mode) - printf(">>>%s: Start to decrypt input with type %s\r\n", - Name, ENCTYPE_NAME(decrypt_mode)); - } else { - printf("%s: Warning, Cannot decrypt type %s (%d)!!!\r\n", - Name, - ENCTYPE_NAME_OK(decrypt_mode) - ? ENCTYPE_NAME(decrypt_mode) - : "(unknown)", - decrypt_mode); - encrypt_send_request_end(); - } -} - -void -encrypt_session_key( Session_Key *key, int server) -{ - Encryptions *ep = encryptions; - - havesessionkey = 1; - - while (ep->type) { - if (ep->session) - (*ep->session)(key, server); - ++ep; - } -} - -/* - * Called when ENCRYPT END is received. - */ -void -encrypt_end(void) -{ - decrypt_input = 0; - if (encrypt_debug_mode) - printf(">>>%s: Input is back to clear text\r\n", Name); - if (encrypt_verbose) - printf("[ Input is now clear text ]\r\n"); -} - -/* - * Called when ENCRYPT REQUEST-END is received. - */ -void -encrypt_request_end(void) -{ - encrypt_send_end(); -} - -/* - * Called when ENCRYPT REQUEST-START is received. If we receive - * this before a type is picked, then that indicates that the - * other side wants us to start encrypting data as soon as we - * can. - */ -void -encrypt_request_start(unsigned char *data __unused, int cnt __unused) -{ - if (encrypt_mode == 0) { - if (Server) - autoencrypt = 1; - return; - } - encrypt_start_output(encrypt_mode); -} - -static unsigned char str_keyid[(MAXKEYLEN*2)+5] = { IAC, SB, TELOPT_ENCRYPT }; - -void -encrypt_enc_keyid(unsigned char *keyid, int len) -{ - encrypt_keyid(&ki[1], keyid, len); -} - -void -encrypt_dec_keyid(unsigned char *keyid, int len) -{ - encrypt_keyid(&ki[0], keyid, len); -} - -void -encrypt_keyid(struct key_info *kp, unsigned char *keyid, int len) -{ - Encryptions *ep; - int dir = kp->dir; - int ret = 0; - - if (len > MAXKEYLEN) - len = MAXKEYLEN; - - if (!(ep = (*kp->getcrypt)(*kp->modep))) { - if (len == 0) - return; - kp->keylen = 0; - } else if (len == 0) { - /* - * Empty option, indicates a failure. - */ - if (kp->keylen == 0) - return; - kp->keylen = 0; - if (ep->keyid) - (void)(*ep->keyid)(dir, kp->keyid, &kp->keylen); - - } else if ((len != kp->keylen) || - (memcmp(keyid, kp->keyid, len) != 0)) { - /* - * Length or contents are different - */ - kp->keylen = len; - memmove(kp->keyid, keyid, len); - if (ep->keyid) - (void)(*ep->keyid)(dir, kp->keyid, &kp->keylen); - } else { - if (ep->keyid) - ret = (*ep->keyid)(dir, kp->keyid, &kp->keylen); - if ((ret == 0) && (dir == DIR_ENCRYPT) && autoencrypt) - encrypt_start_output(*kp->modep); - return; - } - - encrypt_send_keyid(dir, kp->keyid, kp->keylen, 0); -} - -void -encrypt_send_keyid(int dir, const char *keyid, int keylen, int saveit) -{ - unsigned char *strp; - - str_keyid[3] = (dir == DIR_ENCRYPT) - ? ENCRYPT_ENC_KEYID : ENCRYPT_DEC_KEYID; - if (saveit) { - struct key_info *kp = &ki[(dir == DIR_ENCRYPT) ? 0 : 1]; - memmove(kp->keyid, keyid, keylen); - kp->keylen = keylen; - } - - for (strp = &str_keyid[4]; keylen > 0; --keylen) { - if ((*strp++ = *keyid++) == IAC) - *strp++ = IAC; - } - *strp++ = IAC; - *strp++ = SE; - net_write(str_keyid, strp - str_keyid); - printsub('>', &str_keyid[2], strp - str_keyid - 2); -} - -void -encrypt_auto(int on) -{ - if (on < 0) - autoencrypt ^= 1; - else - autoencrypt = on ? 1 : 0; -} - -void -decrypt_auto(int on) -{ - if (on < 0) - autodecrypt ^= 1; - else - autodecrypt = on ? 1 : 0; -} - -void -encrypt_start_output(int type) -{ - Encryptions *ep; - unsigned char *p; - int i; - - if (!(ep = findencryption(type))) { - if (encrypt_debug_mode) { - printf(">>>%s: Can't encrypt with type %s (%d)\r\n", - Name, - ENCTYPE_NAME_OK(type) - ? ENCTYPE_NAME(type) : "(unknown)", - type); - } - return; - } - if (ep->start) { - i = (*ep->start)(DIR_ENCRYPT, Server); - if (encrypt_debug_mode) { - printf(">>>%s: Encrypt start: %s (%d) %s\r\n", - Name, - (i < 0) ? "failed" : - "initial negotiation in progress", - i, ENCTYPE_NAME(type)); - } - if (i) - return; - } - p = str_start + 3; - *p++ = ENCRYPT_START; - for (i = 0; i < ki[0].keylen; ++i) { - if ((*p++ = ki[0].keyid[i]) == IAC) - *p++ = IAC; - } - *p++ = IAC; - *p++ = SE; - net_write(str_start, p - str_start); - net_encrypt(); - printsub('>', &str_start[2], p - &str_start[2]); - /* - * If we are already encrypting in some mode, then - * encrypt the ring (which includes our request) in - * the old mode, mark it all as "clear text" and then - * switch to the new mode. - */ - encrypt_output = ep->output; - encrypt_mode = type; - if (encrypt_debug_mode) - printf(">>>%s: Started to encrypt output with type %s\r\n", - Name, ENCTYPE_NAME(type)); - if (encrypt_verbose) - printf("[ Output is now encrypted with type %s ]\r\n", - ENCTYPE_NAME(type)); -} - -void -encrypt_send_end(void) -{ - if (!encrypt_output) - return; - - str_end[3] = ENCRYPT_END; - net_write(str_end, sizeof(str_end)); - net_encrypt(); - printsub('>', &str_end[2], sizeof(str_end) - 2); - /* - * Encrypt the output buffer now because it will not be done by - * netflush... - */ - encrypt_output = 0; - if (encrypt_debug_mode) - printf(">>>%s: Output is back to clear text\r\n", Name); - if (encrypt_verbose) - printf("[ Output is now clear text ]\r\n"); -} - -void -encrypt_send_request_start(void) -{ - unsigned char *p; - int i; - - p = &str_start[3]; - *p++ = ENCRYPT_REQSTART; - for (i = 0; i < ki[1].keylen; ++i) { - if ((*p++ = ki[1].keyid[i]) == IAC) - *p++ = IAC; - } - *p++ = IAC; - *p++ = SE; - net_write(str_start, p - str_start); - printsub('>', &str_start[2], p - &str_start[2]); - if (encrypt_debug_mode) - printf(">>>%s: Request input to be encrypted\r\n", Name); -} - -void -encrypt_send_request_end(void) -{ - str_end[3] = ENCRYPT_REQEND; - net_write(str_end, sizeof(str_end)); - printsub('>', &str_end[2], sizeof(str_end) - 2); - - if (encrypt_debug_mode) - printf(">>>%s: Request input to be clear text\r\n", Name); -} - -void -encrypt_wait(void) -{ - if (encrypt_debug_mode) - printf(">>>%s: in encrypt_wait\r\n", Name); - if (!havesessionkey || !(I_SUPPORT_ENCRYPT & remote_supports_decrypt)) - return; - while (autoencrypt && !encrypt_output) - if (telnet_spin()) - return; -} - -void -encrypt_gen_printsub(unsigned char *data, int cnt, unsigned char *buf, int buflen) -{ - char tbuf[16], *cp; - - cnt -= 2; - data += 2; - buf[buflen-1] = '\0'; - buf[buflen-2] = '*'; - buflen -= 2;; - for (; cnt > 0; cnt--, data++) { - sprintf(tbuf, " %d", *data); - for (cp = tbuf; *cp && buflen > 0; --buflen) - *buf++ = *cp++; - if (buflen <= 0) - return; - } - *buf = '\0'; -} - -void -encrypt_printsub(unsigned char *data, int cnt, unsigned char *buf, int buflen) -{ - Encryptions *ep; - int type = data[1]; - - for (ep = encryptions; ep->type && ep->type != type; ep++) - ; - - if (ep->printsub) - (*ep->printsub)(data, cnt, buf, buflen); - else - encrypt_gen_printsub(data, cnt, buf, buflen); -} -#endif /* ENCRYPTION */ diff --git a/libtelnet/encrypt.h b/libtelnet/encrypt.h deleted file mode 100644 index eda8d57..0000000 --- a/libtelnet/encrypt.h +++ /dev/null @@ -1,106 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)encrypt.h 8.1 (Berkeley) 6/4/93 - * $FreeBSD$ - */ - -/* - * Copyright (C) 1990 by the Massachusetts Institute of Technology - * - * Export of this software from the United States of America is assumed - * to require a specific license from the United States Government. - * It is the responsibility of any person or organization contemplating - * export to obtain such a license before exporting. - * - * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and - * distribute this software and its documentation for any purpose and - * without fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright notice and - * this permission notice appear in supporting documentation, and that - * the name of M.I.T. not be used in advertising or publicity pertaining - * to distribution of the software without specific, written prior - * permission. M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" without express - * or implied warranty. - */ - -#ifdef ENCRYPTION -# ifndef __ENCRYPTION__ -# define __ENCRYPTION__ - -#define DIR_DECRYPT 1 -#define DIR_ENCRYPT 2 - -#include -typedef unsigned char Block[8]; -typedef unsigned char *BlockT; -#if 0 -typedef struct { Block __; } Schedule[16]; -#else -#define Schedule des_key_schedule -#endif - -#define VALIDKEY(key) ( key[0] | key[1] | key[2] | key[3] | \ - key[4] | key[5] | key[6] | key[7]) - -#define SAMEKEY(k1, k2) (!bcmp((void *)k1, (void *)k2, sizeof(Block))) - -typedef struct { - short type; - int length; - unsigned char *data; -} Session_Key; - -typedef struct { - const char *name; - int type; - void (*output)(unsigned char *, int); - int (*input)(int); - void (*init)(int); - int (*start)(int, int); - int (*is)(unsigned char *, int); - int (*reply)(unsigned char *, int); - void (*session)(Session_Key *, int); - int (*keyid)(int, unsigned char *, int *); - void (*printsub)(unsigned char *, int, unsigned char *, int); -} Encryptions; - -#define SK_DES 1 /* Matched Kerberos v5 KEYTYPE_DES */ - -#include "enc-proto.h" - -extern int encrypt_debug_mode; -extern int (*decrypt_input)(int); -extern void (*encrypt_output)(unsigned char *, int); -# endif /* __ENCRYPTION__ */ -#endif /* ENCRYPTION */ diff --git a/libtelnet/kerberos.c b/libtelnet/kerberos.c deleted file mode 100644 index 29ccb43..0000000 --- a/libtelnet/kerberos.c +++ /dev/null @@ -1,506 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include - - - -#ifndef lint -static const char sccsid[] = "@(#)kerberos.c 8.3 (Berkeley) 5/30/95"; -#endif /* not lint */ - -/* - * Copyright (C) 1990 by the Massachusetts Institute of Technology - * - * Export of this software from the United States of America is assumed - * to require a specific license from the United States Government. - * It is the responsibility of any person or organization contemplating - * export to obtain such a license before exporting. - * - * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and - * distribute this software and its documentation for any purpose and - * without fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright notice and - * this permission notice appear in supporting documentation, and that - * the name of M.I.T. not be used in advertising or publicity pertaining - * to distribution of the software without specific, written prior - * permission. M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" without express - * or implied warranty. - */ - -#ifdef KRB4 -#include -#include "arpa/telnet.h" -#include /* BSD wont include this in krb.h, so we do it here */ -#include -#include -#include -#include - -#include "encrypt.h" -#include "auth.h" -#include "misc.h" - -int kerberos4_cksum(unsigned char *, int); -int kuserok(AUTH_DAT *, char *); - -extern int auth_debug_mode; - -static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0, - AUTHTYPE_KERBEROS_V4, }; - -#define KRB_AUTH 0 /* Authentication data follows */ -#define KRB_REJECT 1 /* Rejected (reason might follow) */ -#define KRB_ACCEPT 2 /* Accepted */ -#define KRB_CHALLENGE 3 /* Challenge for mutual auth. */ -#define KRB_RESPONSE 4 /* Response for mutual auth. */ - -static KTEXT_ST auth; -static char name[ANAME_SZ]; -static AUTH_DAT adat = { 0, "", "", "", 0, {}, 0, 0, 0, { 0, "", 0 } }; -#ifdef ENCRYPTION -static Block session_key = { 0 }; -static des_key_schedule sched; -static Block challenge = { 0 }; -#endif /* ENCRYPTION */ - -static char krb_service_name[] = "rcmd"; -static char empty[] = ""; - -static int -Data(Authenticator *ap, int type, const unsigned char *d, int c) -{ - unsigned char *p = str_data + 4; - const unsigned char *cd = d; - - if (c == -1) - c = strlen(cd); - - if (auth_debug_mode) { - printf("%s:%d: [%d] (%d)", - str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY", - str_data[3], - type, c); - printd(d, c); - printf("\r\n"); - } - *p++ = ap->type; - *p++ = ap->way; - *p++ = type; - while (c-- > 0) { - if ((*p++ = *cd++) == IAC) - *p++ = IAC; - } - *p++ = IAC; - *p++ = SE; - if (str_data[3] == TELQUAL_IS) - printsub('>', &str_data[2], p - (&str_data[2])); - return(net_write(str_data, p - str_data)); -} - -int -kerberos4_init(Authenticator *ap __unused, int server) -{ - FILE *fp; - - if (server) { - str_data[3] = TELQUAL_REPLY; - if ((fp = fopen(KEYFILE, "r")) == NULL) - return(0); - fclose(fp); - } else { - str_data[3] = TELQUAL_IS; - } - return(1); -} - -char dst_realm_buf[REALM_SZ], *dest_realm = NULL; -int dst_realm_sz = REALM_SZ; - -int -kerberos4_send(Authenticator *ap) -{ - KTEXT_ST lauth; - char instance[INST_SZ]; - char *realm; - CREDENTIALS cred; - int r; - - printf("[ Trying KERBEROS4 ... ]\n"); - if (!UserNameRequested) { - if (auth_debug_mode) { - printf("Kerberos V4: no user name supplied\r\n"); - } - return(0); - } - - memset(instance, 0, sizeof(instance)); - - if ((realm = krb_get_phost(RemoteHostName))) - strncpy(instance, realm, sizeof(instance)); - - instance[sizeof(instance)-1] = '\0'; - - realm = dest_realm ? dest_realm : krb_realmofhost(RemoteHostName); - - if (!realm) { - printf("Kerberos V4: no realm for %s\r\n", RemoteHostName); - return(0); - } - if ((r = krb_mk_req(&lauth, krb_service_name, instance, realm, 0L))) { - printf("mk_req failed: %s\r\n", krb_err_txt[r]); - return(0); - } - if ((r = krb_get_cred(krb_service_name, instance, realm, &cred))) { - printf("get_cred failed: %s\r\n", krb_err_txt[r]); - return(0); - } - if (!auth_sendname(UserNameRequested, strlen(UserNameRequested))) { - if (auth_debug_mode) - printf("Not enough room for user name\r\n"); - return(0); - } - if (auth_debug_mode) - printf("Sent %d bytes of authentication data\r\n", lauth.length); - if (!Data(ap, KRB_AUTH, (void *)lauth.dat, lauth.length)) { - if (auth_debug_mode) - printf("Not enough room for authentication data\r\n"); - return(0); - } -#ifdef ENCRYPTION - /* - * If we are doing mutual authentication, get set up to send - * the challenge, and verify it when the response comes back. - */ - if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) { - register int i; - - des_key_sched(&cred.session, sched); - des_random_key(&session_key); - des_ecb_encrypt(&session_key, &session_key, sched, 0); - des_ecb_encrypt(&session_key, &challenge, sched, 0); - /* - * Increment the challenge by 1, and encrypt it for - * later comparison. - */ - for (i = 7; i >= 0; --i) { - register int x; - x = (unsigned int)challenge[i] + 1; - challenge[i] = x; /* ignore overflow */ - if (x < 256) /* if no overflow, all done */ - break; - } - des_ecb_encrypt(&challenge, &challenge, sched, 1); - } -#endif /* ENCRYPTION */ - - if (auth_debug_mode) { - printf("CK: %d:", kerberos4_cksum(lauth.dat, lauth.length)); - printd(lauth.dat, lauth.length); - printf("\r\n"); - printf("Sent Kerberos V4 credentials to server\r\n"); - } - return(1); -} - -void -kerberos4_is(Authenticator *ap, unsigned char *data, int cnt) -{ -#ifdef ENCRYPTION - Session_Key skey; - Block datablock; -#endif /* ENCRYPTION */ - char realm[REALM_SZ]; - char instance[INST_SZ]; - int r; - - if (cnt-- < 1) - return; - switch (*data++) { - case KRB_AUTH: - if (krb_get_lrealm(realm, 1) != KSUCCESS) { - Data(ap, KRB_REJECT, "No local V4 Realm.", -1); - auth_finished(ap, AUTH_REJECT); - if (auth_debug_mode) - printf("No local realm\r\n"); - return; - } - memmove((void *)auth.dat, (void *)data, auth.length = cnt); - if (auth_debug_mode) { - printf("Got %d bytes of authentication data\r\n", cnt); - printf("CK: %d:", kerberos4_cksum(auth.dat, auth.length)); - printd(auth.dat, auth.length); - printf("\r\n"); - } - instance[0] = '*'; instance[1] = 0; - if ((r = krb_rd_req(&auth, krb_service_name, - instance, 0, &adat, empty))) { - if (auth_debug_mode) - printf("Kerberos failed him as %s\r\n", name); - Data(ap, KRB_REJECT, krb_err_txt[r], -1); - auth_finished(ap, AUTH_REJECT); - return; - } -#ifdef ENCRYPTION - memmove((void *)session_key, (void *)adat.session, sizeof(Block)); -#endif /* ENCRYPTION */ - krb_kntoln(&adat, name); - - if (UserNameRequested && !kuserok(&adat, UserNameRequested)) - Data(ap, KRB_ACCEPT, NULL, 0); - else - Data(ap, KRB_REJECT, "user is not authorized", -1); - auth_finished(ap, AUTH_USER); - break; - - case KRB_CHALLENGE: -#ifndef ENCRYPTION - Data(ap, KRB_RESPONSE, NULL, 0); -#else /* ENCRYPTION */ - if (!VALIDKEY(session_key)) { - /* - * We don't have a valid session key, so just - * send back a response with an empty session - * key. - */ - Data(ap, KRB_RESPONSE, NULL, 0); - break; - } - - des_key_sched(&session_key, sched); - memmove((void *)datablock, (void *)data, sizeof(Block)); - /* - * Take the received encrypted challenge, and encrypt - * it again to get a unique session_key for the - * ENCRYPT option. - */ - des_ecb_encrypt(&datablock, &session_key, sched, 1); - skey.type = SK_DES; - skey.length = 8; - skey.data = session_key; - encrypt_session_key(&skey, 1); - /* - * Now decrypt the received encrypted challenge, - * increment by one, re-encrypt it and send it back. - */ - des_ecb_encrypt(&datablock, &challenge, sched, 0); - for (r = 7; r >= 0; r--) { - register int t; - t = (unsigned int)challenge[r] + 1; - challenge[r] = t; /* ignore overflow */ - if (t < 256) /* if no overflow, all done */ - break; - } - des_ecb_encrypt(&challenge, &challenge, sched, 1); - Data(ap, KRB_RESPONSE, challenge, sizeof(challenge)); -#endif /* ENCRYPTION */ - break; - - default: - if (auth_debug_mode) - printf("Unknown Kerberos option %d\r\n", data[-1]); - Data(ap, KRB_REJECT, NULL, 0); - break; - } -} - -void -kerberos4_reply(Authenticator *ap, unsigned char *data, int cnt) -{ -#ifdef ENCRYPTION - Session_Key skey; -#endif /* ENCRYPTION */ - - if (cnt-- < 1) - return; - switch (*data++) { - case KRB_REJECT: - if (cnt > 0) { - printf("[ Kerberos V4 refuses authentication because %.*s ]\r\n", - cnt, data); - } else - printf("[ Kerberos V4 refuses authentication ]\r\n"); - auth_send_retry(); - return; - case KRB_ACCEPT: - printf("[ Kerberos V4 accepts you ]\n"); - if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) { - /* - * Send over the encrypted challenge. - */ -#ifndef ENCRYPTION - Data(ap, KRB_CHALLENGE, NULL, 0); -#else /* ENCRYPTION */ - Data(ap, KRB_CHALLENGE, session_key, - sizeof(session_key)); - des_ecb_encrypt(&session_key, &session_key, sched, 1); - skey.type = SK_DES; - skey.length = 8; - skey.data = session_key; - encrypt_session_key(&skey, 0); -#endif /* ENCRYPTION */ - return; - } - auth_finished(ap, AUTH_USER); - return; - case KRB_RESPONSE: -#ifdef ENCRYPTION - /* - * Verify that the response to the challenge is correct. - */ - if ((cnt != sizeof(Block)) || - (0 != memcmp((void *)data, (void *)challenge, - sizeof(challenge)))) - { -#endif /* ENCRYPTION */ - printf("[ Kerberos V4 challenge failed!!! ]\r\n"); - auth_send_retry(); - return; -#ifdef ENCRYPTION - } - printf("[ Kerberos V4 challenge successful ]\r\n"); - auth_finished(ap, AUTH_USER); -#endif /* ENCRYPTION */ - break; - default: - if (auth_debug_mode) - printf("Unknown Kerberos option %d\r\n", data[-1]); - return; - } -} - -int -kerberos4_status(Authenticator *ap __unused, char *nam, int level) -{ - if (level < AUTH_USER) - return(level); - - if (UserNameRequested && !kuserok(&adat, UserNameRequested)) { - strcpy(nam, UserNameRequested); - return(AUTH_VALID); - } else - return(AUTH_USER); -} - -#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);} -#define ADDC(buf, len, c) if ((len) > 0) {*(buf)++ = (c); --(len);} - -void -kerberos4_printsub(unsigned char *data, int cnt, unsigned char *buf, int buflen) -{ - char lbuf[32]; - register int i; - - buf[buflen-1] = '\0'; /* make sure its NULL terminated */ - buflen -= 1; - - switch(data[3]) { - case KRB_REJECT: /* Rejected (reason might follow) */ - strncpy((char *)buf, " REJECT ", buflen); - goto common; - - case KRB_ACCEPT: /* Accepted (name might follow) */ - strncpy((char *)buf, " ACCEPT ", buflen); - common: - BUMP(buf, buflen); - if (cnt <= 4) - break; - ADDC(buf, buflen, '"'); - for (i = 4; i < cnt; i++) - ADDC(buf, buflen, data[i]); - ADDC(buf, buflen, '"'); - ADDC(buf, buflen, '\0'); - break; - - case KRB_AUTH: /* Authentication data follows */ - strncpy((char *)buf, " AUTH", buflen); - goto common2; - - case KRB_CHALLENGE: - strncpy((char *)buf, " CHALLENGE", buflen); - goto common2; - - case KRB_RESPONSE: - strncpy((char *)buf, " RESPONSE", buflen); - goto common2; - - default: - sprintf(lbuf, " %d (unknown)", data[3]); - strncpy((char *)buf, lbuf, buflen); - common2: - BUMP(buf, buflen); - for (i = 4; i < cnt; i++) { - sprintf(lbuf, " %d", data[i]); - strncpy((char *)buf, lbuf, buflen); - BUMP(buf, buflen); - } - break; - } -} - -int -kerberos4_cksum(unsigned char *d, int n) -{ - int ck = 0; - - /* - * A comment is probably needed here for those not - * well versed in the "C" language. Yes, this is - * supposed to be a "switch" with the body of the - * "switch" being a "while" statement. The whole - * purpose of the switch is to allow us to jump into - * the middle of the while() loop, and then not have - * to do any more switch()s. - * - * Some compilers will spit out a warning message - * about the loop not being entered at the top. - */ - switch (n&03) - while (n > 0) { - case 0: - ck ^= (int)*d++ << 24; - --n; - case 3: - ck ^= (int)*d++ << 16; - --n; - case 2: - ck ^= (int)*d++ << 8; - --n; - case 1: - ck ^= (int)*d++; - --n; - } - return(ck); -} -#endif diff --git a/libtelnet/kerberos5.c b/libtelnet/kerberos5.c deleted file mode 100644 index d1ff80d..0000000 --- a/libtelnet/kerberos5.c +++ /dev/null @@ -1,827 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -/* - * Copyright (C) 1990 by the Massachusetts Institute of Technology - * - * Export of this software from the United States of America may - * require a specific license from the United States Government. - * It is the responsibility of any person or organization contemplating - * export to obtain such a license before exporting. - * - * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and - * distribute this software and its documentation for any purpose and - * without fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright notice and - * this permission notice appear in supporting documentation, and that - * the name of M.I.T. not be used in advertising or publicity pertaining - * to distribution of the software without specific, written prior - * permission. M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" without express - * or implied warranty. - */ - -#include - - - -#ifdef KRB5 - -#include "arpa/telnet.h" -#include -#include -#include -#include -#include -#include -#include -#define Authenticator k5_Authenticator -#include -#undef Authenticator - -#include "encrypt.h" -#include "auth.h" -#include "misc.h" - -int forward_flags = 0; /* Flags get set in telnet/main.c on -f and -F */ - -/* These values need to be the same as those defined in telnet/main.c. */ -/* Either define them in both places, or put in some common header file. */ -#define OPTS_FORWARD_CREDS 0x00000002 -#define OPTS_FORWARDABLE_CREDS 0x00000001 - -void kerberos5_forward (Authenticator *); - -static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0, - AUTHTYPE_KERBEROS_V5, }; - -#define KRB_AUTH 0 /* Authentication data follows */ -#define KRB_REJECT 1 /* Rejected (reason might follow) */ -#define KRB_ACCEPT 2 /* Accepted */ -#define KRB_RESPONSE 3 /* Response for mutual auth. */ - -#define KRB_FORWARD 4 /* Forwarded credentials follow */ -#define KRB_FORWARD_ACCEPT 5 /* Forwarded credentials accepted */ -#define KRB_FORWARD_REJECT 6 /* Forwarded credentials rejected */ - -static krb5_data auth; -static krb5_ticket *ticket; - -static krb5_context context; -static krb5_auth_context auth_context; - -static void -print_krb5_error(krb5_context context, krb5_error_code code, const char *msg) -{ - const char *error_message; - - error_message = krb5_get_error_message(context, code); - printf(msg, error_message); - krb5_free_error_message(context, error_message); -} - -static int -Data(Authenticator *ap, int type, const char *d, int c) -{ - unsigned char *p = str_data + 4; - const unsigned char *cd = d; - - if (c == -1) - c = strlen(cd); - - if (auth_debug_mode) { - printf("%s:%d: [%d] (%d)", - str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY", - str_data[3], - type, c); - printd(d, c); - printf("\r\n"); - } - *p++ = ap->type; - *p++ = ap->way; - *p++ = type; - while (c-- > 0) { - if ((*p++ = *cd++) == IAC) - *p++ = IAC; - } - *p++ = IAC; - *p++ = SE; - if (str_data[3] == TELQUAL_IS) - printsub('>', &str_data[2], p - &str_data[2]); - return(net_write(str_data, p - str_data)); -} - -int -kerberos5_init(Authenticator *ap __unused, int server) -{ - krb5_error_code ret; - - ret = krb5_init_context(&context); - if (ret) - return 0; - if (server) { - krb5_keytab kt; - krb5_kt_cursor cursor; - - ret = krb5_kt_default(context, &kt); - if (ret) - return 0; - - ret = krb5_kt_start_seq_get (context, kt, &cursor); - if (ret) { - krb5_kt_close (context, kt); - return 0; - } - krb5_kt_end_seq_get (context, kt, &cursor); - krb5_kt_close (context, kt); - - str_data[3] = TELQUAL_REPLY; - } else - str_data[3] = TELQUAL_IS; - return(1); -} - -extern int net; - -static int -kerberos5_send(const char *name, Authenticator *ap) -{ - krb5_error_code ret; - krb5_ccache ccache; - int ap_opts; - krb5_data cksum_data; - char foo[2]; - - if (!UserNameRequested) { - if (auth_debug_mode) { - printf("Kerberos V5: no user name supplied\r\n"); - } - return(0); - } - - ret = krb5_cc_default(context, &ccache); - if (ret) { - if (auth_debug_mode) { - print_krb5_error(context, ret, "Kerberos V5: could not get default ccache: %s\r\n"); - } - return 0; - } - - if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) - ap_opts = AP_OPTS_MUTUAL_REQUIRED; - else - ap_opts = 0; - ap_opts |= AP_OPTS_USE_SUBKEY; - - ret = krb5_auth_con_init (context, &auth_context); - if (ret) { - if (auth_debug_mode) { - print_krb5_error(context, ret, "Kerberos V5: krb5_auth_con_init failed (%s)\r\n"); - } - return(0); - } - - ret = krb5_auth_con_setaddrs_from_fd (context, - auth_context, - &net); - if (ret) { - if (auth_debug_mode) { - print_krb5_error(context, ret, "Kerberos V5:" - " krb5_auth_con_setaddrs_from_fd failed (%s)\r\n"); - } - return(0); - } - - krb5_auth_con_setkeytype (context, auth_context, KEYTYPE_DES); - - foo[0] = ap->type; - foo[1] = ap->way; - - cksum_data.length = sizeof(foo); - cksum_data.data = foo; - - - { - krb5_principal service; - char sname[128]; - - - ret = krb5_sname_to_principal (context, - RemoteHostName, - NULL, - KRB5_NT_SRV_HST, - &service); - if(ret) { - if (auth_debug_mode) { - const char *err_str; - - err_str = krb5_get_error_message(context, ret); - printf("Kerberosr V5:" - " krb5_sname_to_principal(%s) failed (%s)\r\n", - RemoteHostName, err_str); - krb5_free_error_message(context, err_str); - } - return 0; - } - ret = krb5_unparse_name_fixed(context, service, sname, sizeof(sname)); - if(ret) { - if (auth_debug_mode) { - print_krb5_error(context, ret, "Kerberos V5:" - " krb5_unparse_name_fixed failed (%s)\r\n"); - } - return 0; - } - printf("[ Trying %s (%s)... ]\r\n", name, sname); - ret = krb5_mk_req_exact(context, &auth_context, ap_opts, - service, - &cksum_data, ccache, &auth); - krb5_free_principal (context, service); - - } - if (ret) { - if (1 || auth_debug_mode) { - print_krb5_error(context, ret, "Kerberos V5: mk_req failed (%s)\r\n"); - } - return(0); - } - - if (!auth_sendname((unsigned char *)UserNameRequested, - strlen(UserNameRequested))) { - if (auth_debug_mode) - printf("Not enough room for user name\r\n"); - return(0); - } - if (!Data(ap, KRB_AUTH, auth.data, auth.length)) { - if (auth_debug_mode) - printf("Not enough room for authentication data\r\n"); - return(0); - } - if (auth_debug_mode) { - printf("Sent Kerberos V5 credentials to server\r\n"); - } - return(1); -} - -int -kerberos5_send_mutual(Authenticator *ap) -{ - return kerberos5_send("mutual KERBEROS5", ap); -} - -int -kerberos5_send_oneway(Authenticator *ap) -{ - return kerberos5_send("KERBEROS5", ap); -} - -void -kerberos5_is(Authenticator *ap, unsigned char *data, int cnt) -{ - krb5_error_code ret; - krb5_data outbuf; - krb5_keyblock *key_block; - char *name; - krb5_principal server; - int zero = 0; - - if (cnt-- < 1) - return; - switch (*data++) { - case KRB_AUTH: - auth.data = (char *)data; - auth.length = cnt; - - auth_context = NULL; - - ret = krb5_auth_con_init (context, &auth_context); - if (ret) { - Data(ap, KRB_REJECT, "krb5_auth_con_init failed", -1); - auth_finished(ap, AUTH_REJECT); - if (auth_debug_mode) - print_krb5_error(context, ret, "Kerberos V5: krb5_auth_con_init failed (%s)\r\n"); - return; - } - - ret = krb5_auth_con_setaddrs_from_fd (context, - auth_context, - &zero); - if (ret) { - Data(ap, KRB_REJECT, "krb5_auth_con_setaddrs_from_fd failed", -1); - auth_finished(ap, AUTH_REJECT); - if (auth_debug_mode) - print_krb5_error(context, ret, "Kerberos V5: " - "krb5_auth_con_setaddrs_from_fd failed (%s)\r\n"); - return; - } - - ret = krb5_sock_to_principal (context, - 0, - "host", - KRB5_NT_SRV_HST, - &server); - if (ret) { - Data(ap, KRB_REJECT, "krb5_sock_to_principal failed", -1); - auth_finished(ap, AUTH_REJECT); - if (auth_debug_mode) - print_krb5_error(context, ret, "Kerberos V5: " - "krb5_sock_to_principal failed (%s)\r\n"); - return; - } - - ret = krb5_rd_req(context, - &auth_context, - &auth, - server, - NULL, - NULL, - &ticket); - - krb5_free_principal (context, server); - if (ret) { - char *errbuf; - const char *err_str; - - err_str = krb5_get_error_message(context, ret); - asprintf(&errbuf, - "Read req failed: %s", err_str); - krb5_free_error_message(context, err_str); - Data(ap, KRB_REJECT, errbuf, -1); - if (auth_debug_mode) - printf("%s\r\n", errbuf); - free (errbuf); - return; - } - - { - char foo[2]; - - foo[0] = ap->type; - foo[1] = ap->way; - - ret = krb5_verify_authenticator_checksum(context, - auth_context, - foo, - sizeof(foo)); - - if (ret) { - char *errbuf; - const char *err_str; - - err_str = krb5_get_error_message(context, ret); - asprintf(&errbuf, "Bad checksum: %s", err_str); - krb5_free_error_message(context, err_str); - Data(ap, KRB_REJECT, errbuf, -1); - if (auth_debug_mode) - printf ("%s\r\n", errbuf); - free(errbuf); - return; - } - } - ret = krb5_auth_con_getremotesubkey (context, - auth_context, - &key_block); - - if (ret) { - Data(ap, KRB_REJECT, "krb5_auth_con_getremotesubkey failed", -1); - auth_finished(ap, AUTH_REJECT); - if (auth_debug_mode) - print_krb5_error(context, ret, "Kerberos V5: " - "krb5_auth_con_getremotesubkey failed (%s)\r\n"); - return; - } - - if (key_block == NULL) { - ret = krb5_auth_con_getkey(context, - auth_context, - &key_block); - } - if (ret) { - Data(ap, KRB_REJECT, "krb5_auth_con_getkey failed", -1); - auth_finished(ap, AUTH_REJECT); - if (auth_debug_mode) - print_krb5_error(context, ret, "Kerberos V5: " - "krb5_auth_con_getkey failed (%s)\r\n"); - return; - } - if (key_block == NULL) { - Data(ap, KRB_REJECT, "no subkey received", -1); - auth_finished(ap, AUTH_REJECT); - if (auth_debug_mode) - printf("Kerberos V5: " - "krb5_auth_con_getremotesubkey returned NULL key\r\n"); - return; - } - - if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) { - ret = krb5_mk_rep(context, auth_context, &outbuf); - if (ret) { - Data(ap, KRB_REJECT, - "krb5_mk_rep failed", -1); - auth_finished(ap, AUTH_REJECT); - if (auth_debug_mode) - print_krb5_error(context, ret, "Kerberos V5: " - "krb5_mk_rep failed (%s)\r\n"); - return; - } - Data(ap, KRB_RESPONSE, outbuf.data, outbuf.length); - } - if (krb5_unparse_name(context, ticket->client, &name)) - name = 0; - - if(UserNameRequested && krb5_kuserok(context, - ticket->client, - UserNameRequested)) { - Data(ap, KRB_ACCEPT, name, name ? -1 : 0); - if (auth_debug_mode) { - printf("Kerberos5 identifies him as ``%s''\r\n", - name ? name : ""); - } - - if(key_block->keytype == ETYPE_DES_CBC_MD5 || - key_block->keytype == ETYPE_DES_CBC_MD4 || - key_block->keytype == ETYPE_DES_CBC_CRC) { - Session_Key skey; - - skey.type = SK_DES; - skey.length = 8; - skey.data = key_block->keyvalue.data; - encrypt_session_key(&skey, 0); - } - - } else { - char *msg; - - asprintf (&msg, "user `%s' is not authorized to " - "login as `%s'", - name ? name : "", - UserNameRequested ? UserNameRequested : ""); - if (msg == NULL) - Data(ap, KRB_REJECT, NULL, 0); - else { - Data(ap, KRB_REJECT, (void *)msg, -1); - free(msg); - } - auth_finished (ap, AUTH_REJECT); - krb5_free_keyblock_contents(context, key_block); - break; - } - auth_finished(ap, AUTH_USER); - krb5_free_keyblock_contents(context, key_block); - - break; - case KRB_FORWARD: { - struct passwd *pwd; - char ccname[1024]; /* XXX */ - krb5_data inbuf; - krb5_ccache ccache; - inbuf.data = (char *)data; - inbuf.length = cnt; - - pwd = getpwnam (UserNameRequested); - if (pwd == NULL) - break; - - snprintf (ccname, sizeof(ccname), - "FILE:/tmp/krb5cc_%u", pwd->pw_uid); - - ret = krb5_cc_resolve (context, ccname, &ccache); - if (ret) { - if (auth_debug_mode) - print_krb5_error(context, ret, "Kerberos V5: could not get ccache: %s\r\n"); - break; - } - - ret = krb5_cc_initialize (context, - ccache, - ticket->client); - if (ret) { - if (auth_debug_mode) - print_krb5_error(context, ret, "Kerberos V5: could not init ccache: %s\r\n"); - break; - } - -#if defined(DCE) - esetenv("KRB5CCNAME", ccname, 1); -#endif - ret = krb5_rd_cred2 (context, - auth_context, - ccache, - &inbuf); - if(ret) { - char *errbuf; - const char *err_str; - - err_str = krb5_get_error_message(context, ret); - asprintf (&errbuf, - "Read forwarded creds failed: %s", err_str); - krb5_free_error_message(context, err_str); - if(errbuf == NULL) - Data(ap, KRB_FORWARD_REJECT, NULL, 0); - else - Data(ap, KRB_FORWARD_REJECT, errbuf, -1); - if (auth_debug_mode) - printf("Could not read forwarded credentials: %s\r\n", - errbuf); - free (errbuf); - } else { - Data(ap, KRB_FORWARD_ACCEPT, 0, 0); -#if defined(DCE) - dfsfwd = 1; -#endif - } - chown (ccname + 5, pwd->pw_uid, -1); - if (auth_debug_mode) - printf("Forwarded credentials obtained\r\n"); - break; - } - default: - if (auth_debug_mode) - printf("Unknown Kerberos option %d\r\n", data[-1]); - Data(ap, KRB_REJECT, 0, 0); - break; - } -} - -void -kerberos5_reply(Authenticator *ap, unsigned char *data, int cnt) -{ - static int mutual_complete = 0; - - if (cnt-- < 1) - return; - switch (*data++) { - case KRB_REJECT: - if (cnt > 0) { - printf("[ Kerberos V5 refuses authentication because %.*s ]\r\n", - cnt, data); - } else - printf("[ Kerberos V5 refuses authentication ]\r\n"); - auth_send_retry(); - return; - case KRB_ACCEPT: { - krb5_error_code ret; - Session_Key skey; - krb5_keyblock *keyblock; - - if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL && - !mutual_complete) { - printf("[ Kerberos V5 accepted you, but didn't provide mutual authentication! ]\r\n"); - auth_send_retry(); - return; - } - if (cnt) - printf("[ Kerberos V5 accepts you as ``%.*s'' ]\r\n", cnt, data); - else - printf("[ Kerberos V5 accepts you ]\r\n"); - - ret = krb5_auth_con_getlocalsubkey (context, - auth_context, - &keyblock); - if (ret) - ret = krb5_auth_con_getkey (context, - auth_context, - &keyblock); - if(ret) { - print_krb5_error(context, ret, "[ krb5_auth_con_getkey: %s ]\r\n"); - auth_send_retry(); - return; - } - - skey.type = SK_DES; - skey.length = 8; - skey.data = keyblock->keyvalue.data; - encrypt_session_key(&skey, 0); - krb5_free_keyblock_contents (context, keyblock); - auth_finished(ap, AUTH_USER); - if (forward_flags & OPTS_FORWARD_CREDS) - kerberos5_forward(ap); - break; - } - case KRB_RESPONSE: - if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) { - /* the rest of the reply should contain a krb_ap_rep */ - krb5_ap_rep_enc_part *reply; - krb5_data inbuf; - krb5_error_code ret; - - inbuf.length = cnt; - inbuf.data = (char *)data; - - ret = krb5_rd_rep(context, auth_context, &inbuf, &reply); - if (ret) { - print_krb5_error(context, ret, "[ Mutual authentication failed: %s ]\r\n"); - auth_send_retry(); - return; - } - krb5_free_ap_rep_enc_part(context, reply); - mutual_complete = 1; - } - return; - case KRB_FORWARD_ACCEPT: - printf("[ Kerberos V5 accepted forwarded credentials ]\r\n"); - return; - case KRB_FORWARD_REJECT: - printf("[ Kerberos V5 refuses forwarded credentials because %.*s ]\r\n", - cnt, data); - return; - default: - if (auth_debug_mode) - printf("Unknown Kerberos option %d\r\n", data[-1]); - return; - } -} - -int -kerberos5_status(Authenticator *ap __unused, char *name, int level) -{ - if (level < AUTH_USER) - return(level); - - if (UserNameRequested && - krb5_kuserok(context, - ticket->client, - UserNameRequested)) - { - strcpy(name, UserNameRequested); - return(AUTH_VALID); - } else - return(AUTH_USER); -} - -#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);} -#define ADDC(buf, len, c) if ((len) > 0) {*(buf)++ = (c); --(len);} - -void -kerberos5_printsub(unsigned char *data, int cnt, unsigned char *buf, int buflen) -{ - int i; - - buf[buflen-1] = '\0'; /* make sure its NULL terminated */ - buflen -= 1; - - switch(data[3]) { - case KRB_REJECT: /* Rejected (reason might follow) */ - strlcpy((char *)buf, " REJECT ", buflen); - goto common; - - case KRB_ACCEPT: /* Accepted (name might follow) */ - strlcpy((char *)buf, " ACCEPT ", buflen); - common: - BUMP(buf, buflen); - if (cnt <= 4) - break; - ADDC(buf, buflen, '"'); - for (i = 4; i < cnt; i++) - ADDC(buf, buflen, data[i]); - ADDC(buf, buflen, '"'); - ADDC(buf, buflen, '\0'); - break; - - - case KRB_AUTH: /* Authentication data follows */ - strlcpy((char *)buf, " AUTH", buflen); - goto common2; - - case KRB_RESPONSE: - strlcpy((char *)buf, " RESPONSE", buflen); - goto common2; - - case KRB_FORWARD: /* Forwarded credentials follow */ - strlcpy((char *)buf, " FORWARD", buflen); - goto common2; - - case KRB_FORWARD_ACCEPT: /* Forwarded credentials accepted */ - strlcpy((char *)buf, " FORWARD_ACCEPT", buflen); - goto common2; - - case KRB_FORWARD_REJECT: /* Forwarded credentials rejected */ - /* (reason might follow) */ - strlcpy((char *)buf, " FORWARD_REJECT", buflen); - goto common2; - - default: - snprintf(buf, buflen, " %d (unknown)", data[3]); - common2: - BUMP(buf, buflen); - for (i = 4; i < cnt; i++) { - snprintf(buf, buflen, " %d", data[i]); - BUMP(buf, buflen); - } - break; - } -} - -void -kerberos5_forward(Authenticator *ap) -{ - krb5_error_code ret; - krb5_ccache ccache; - krb5_creds creds; - krb5_kdc_flags flags; - krb5_data out_data; - krb5_principal principal; - - ret = krb5_cc_default (context, &ccache); - if (ret) { - if (auth_debug_mode) - print_krb5_error(context, ret, "KerberosV5: could not get default ccache: %s\r\n"); - return; - } - - ret = krb5_cc_get_principal (context, ccache, &principal); - if (ret) { - if (auth_debug_mode) - print_krb5_error(context, ret, "KerberosV5: could not get principal: %s\r\n"); - return; - } - - memset (&creds, 0, sizeof(creds)); - - creds.client = principal; - - ret = krb5_build_principal (context, - &creds.server, - strlen(principal->realm), - principal->realm, - "krbtgt", - principal->realm, - NULL); - - if (ret) { - if (auth_debug_mode) - print_krb5_error(context, ret, "KerberosV5: could not get principal: %s\r\n"); - return; - } - - creds.times.endtime = 0; - - flags.i = 0; - flags.b.forwarded = 1; - if (forward_flags & OPTS_FORWARDABLE_CREDS) - flags.b.forwardable = 1; - - ret = krb5_get_forwarded_creds (context, - auth_context, - ccache, - flags.i, - RemoteHostName, - &creds, - &out_data); - if (ret) { - if (auth_debug_mode) - print_krb5_error(context, ret, "Kerberos V5: error getting forwarded creds: %s\r\n"); - return; - } - - if(!Data(ap, KRB_FORWARD, out_data.data, out_data.length)) { - if (auth_debug_mode) - printf("Not enough room for authentication data\r\n"); - } else { - if (auth_debug_mode) - printf("Forwarded local Kerberos V5 credentials to server\r\n"); - } -} - -#if defined(DCE) -/* if this was a K5 authentication try and join a PAG for the user. */ -void -kerberos5_dfspag(void) -{ - if (dfsk5ok) { - dfspag = krb5_dfs_pag(context, dfsfwd, ticket->client, - UserNameRequested); - } -} -#endif - -#endif /* KRB5 */ diff --git a/libtelnet/key-proto.h b/libtelnet/key-proto.h deleted file mode 100644 index 2f3f346..0000000 --- a/libtelnet/key-proto.h +++ /dev/null @@ -1,65 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * @(#)key-proto.h 8.1 (Berkeley) 6/4/93 - */ - -/* - * Copyright (C) 1990 by the Massachusetts Institute of Technology - * - * Export of this software from the United States of America is assumed - * to require a specific license from the United States Government. - * It is the responsibility of any person or organization contemplating - * export to obtain such a license before exporting. - * - * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and - * distribute this software and its documentation for any purpose and - * without fee is hereby granted, provided that the above copyright - * notice appear in all copies and that both that copyright notice and - * this permission notice appear in supporting documentation, and that - * the name of M.I.T. not be used in advertising or publicity pertaining - * to distribution of the software without specific, written prior - * permission. M.I.T. makes no representations about the suitability of - * this software for any purpose. It is provided "as is" without express - * or implied warranty. - * - * $FreeBSD$ - */ - -#ifndef __KEY_PROTO__ -#define __KEY_PROTO__ - -int key_file_exists(void); -void key_lookup(unsigned char *, Block); -void key_stream_init(Block, Block, int); -unsigned char key_stream(int, int); -#endif diff --git a/libtelnet/krb4encpwd.c b/libtelnet/krb4encpwd.c deleted file mode 100644 index b267fc5..0000000 --- a/libtelnet/krb4encpwd.c +++ /dev/null @@ -1,428 +0,0 @@ -/*- - * Copyright (c) 1992, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include - - - -#ifndef lint -static char sccsid[] = "@(#)krb4encpwd.c 8.3 (Berkeley) 5/30/95"; -#endif /* not lint */ - - -#ifdef KRB4_ENCPWD -/* - * COPYRIGHT (C) 1990 DIGITAL EQUIPMENT CORPORATION - * ALL RIGHTS RESERVED - * - * "Digital Equipment Corporation authorizes the reproduction, - * distribution and modification of this software subject to the following - * restrictions: - * - * 1. Any partial or whole copy of this software, or any modification - * thereof, must include this copyright notice in its entirety. - * - * 2. This software is supplied "as is" with no warranty of any kind, - * expressed or implied, for any purpose, including any warranty of fitness - * or merchantibility. DIGITAL assumes no responsibility for the use or - * reliability of this software, nor promises to provide any form of - * support for it on any basis. - * - * 3. Distribution of this software is authorized only if no profit or - * remuneration of any kind is received in exchange for such distribution. - * - * 4. This software produces public key authentication certificates - * bearing an expiration date established by DIGITAL and RSA Data - * Security, Inc. It may cease to generate certificates after the expiration - * date. Any modification of this software that changes or defeats - * the expiration date or its effect is unauthorized. - * - * 5. Software that will renew or extend the expiration date of - * authentication certificates produced by this software may be obtained - * from RSA Data Security, Inc., 10 Twin Dolphin Drive, Redwood City, CA - * 94065, (415)595-8782, or from DIGITAL" - * - */ - -#include -#include -#include "arpa/telnet.h" -#include -#include -#include -#include -#include - -#include "encrypt.h" -#include "auth.h" -#include "misc.h" - -int krb_mk_encpwd_req(KTEXT, char *, char *, char *, char *, char *, char *); -int krb_rd_encpwd_req(KTEXT, char *, char *, u_long, AUTH_DAT *, char *, char *, char *, char *); - -extern auth_debug_mode; - -static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0, - AUTHTYPE_KRB4_ENCPWD, }; -static unsigned char str_name[1024] = { IAC, SB, TELOPT_AUTHENTICATION, - TELQUAL_NAME, }; - -#define KRB4_ENCPWD_AUTH 0 /* Authentication data follows */ -#define KRB4_ENCPWD_REJECT 1 /* Rejected (reason might follow) */ -#define KRB4_ENCPWD_ACCEPT 2 /* Accepted */ -#define KRB4_ENCPWD_CHALLENGE 3 /* Challenge for mutual auth. */ -#define KRB4_ENCPWD_ACK 4 /* Acknowledge */ - -#define KRB_SERVICE_NAME "rcmd" - -static KTEXT_ST auth; -static char name[ANAME_SZ]; -static char user_passwd[ANAME_SZ]; -static AUTH_DAT adat = { 0 }; -#ifdef ENCRYPTION -static Block session_key = { 0 }; -#endif /* ENCRYPTION */ -static char challenge[REALM_SZ]; - - static int -Data(ap, type, d, c) - Authenticator *ap; - int type; - void *d; - int c; -{ - unsigned char *p = str_data + 4; - unsigned char *cd = (unsigned char *)d; - - if (c == -1) - c = strlen((char *)cd); - - if (0) { - printf("%s:%d: [%d] (%d)", - str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY", - str_data[3], - type, c); - printd(d, c); - printf("\r\n"); - } - *p++ = ap->type; - *p++ = ap->way; - *p++ = type; - while (c-- > 0) { - if ((*p++ = *cd++) == IAC) - *p++ = IAC; - } - *p++ = IAC; - *p++ = SE; - if (str_data[3] == TELQUAL_IS) - printsub('>', &str_data[2], p - (&str_data[2])); - return(net_write(str_data, p - str_data)); -} - - int -krb4encpwd_init(ap, server) - Authenticator *ap; - int server; -{ - char hostname[80], *cp, *realm; - C_Block skey; - - if (server) { - str_data[3] = TELQUAL_REPLY; - } else { - str_data[3] = TELQUAL_IS; - gethostname(hostname, sizeof(hostname)); - realm = krb_realmofhost(hostname); - cp = strchr(hostname, '.'); - if (*cp != NULL) *cp = NULL; - if (read_service_key(KRB_SERVICE_NAME, hostname, realm, 0, - KEYFILE, (char *)skey)) { - return(0); - } - } - return(1); -} - - int -krb4encpwd_send(ap) - Authenticator *ap; -{ - - printf("[ Trying KRB4ENCPWD ... ]\n"); - if (!UserNameRequested) { - return(0); - } - if (!auth_sendname(UserNameRequested, strlen(UserNameRequested))) { - return(0); - } - - if (!Data(ap, KRB4_ENCPWD_ACK, (void *)NULL, 0)) { - return(0); - } - - return(1); -} - - void -krb4encpwd_is(ap, data, cnt) - Authenticator *ap; - unsigned char *data; - int cnt; -{ - Session_Key skey; - Block datablock; - char r_passwd[ANAME_SZ], r_user[ANAME_SZ]; - char lhostname[ANAME_SZ], *cp; - int r; - time_t now; - - if (cnt-- < 1) - return; - switch (*data++) { - case KRB4_ENCPWD_AUTH: - memmove((void *)auth.dat, (void *)data, auth.length = cnt); - - gethostname(lhostname, sizeof(lhostname)); - if ((cp = strchr(lhostname, '.')) != 0) *cp = '\0'; - - if (r = krb_rd_encpwd_req(&auth, KRB_SERVICE_NAME, lhostname, 0, &adat, NULL, challenge, r_user, r_passwd)) { - Data(ap, KRB4_ENCPWD_REJECT, (void *)"Auth failed", -1); - auth_finished(ap, AUTH_REJECT); - return; - } - auth_encrypt_userpwd(r_passwd); - if (passwdok(UserNameRequested, UserPassword) == 0) { - /* - * illegal username and password - */ - Data(ap, KRB4_ENCPWD_REJECT, (void *)"Illegal password", -1); - auth_finished(ap, AUTH_REJECT); - return; - } - - memmove((void *)session_key, (void *)adat.session, sizeof(Block)); - Data(ap, KRB4_ENCPWD_ACCEPT, (void *)0, 0); - auth_finished(ap, AUTH_USER); - break; - - case KRB4_ENCPWD_CHALLENGE: - /* - * Take the received random challenge text and save - * for future authentication. - */ - memmove((void *)challenge, (void *)data, sizeof(Block)); - break; - - - case KRB4_ENCPWD_ACK: - /* - * Receive ack, if mutual then send random challenge - */ - - /* - * If we are doing mutual authentication, get set up to send - * the challenge, and verify it when the response comes back. - */ - - if ((ap->way & AUTH_HOW_MASK) == AUTH_HOW_MUTUAL) { - register int i; - - time(&now); - sprintf(challenge, "%x", now); - Data(ap, KRB4_ENCPWD_CHALLENGE, (void *)challenge, strlen(challenge)); - } - break; - - default: - Data(ap, KRB4_ENCPWD_REJECT, 0, 0); - break; - } -} - - - void -krb4encpwd_reply(ap, data, cnt) - Authenticator *ap; - unsigned char *data; - int cnt; -{ - Session_Key skey; - KTEXT_ST krb_token; - Block enckey; - CREDENTIALS cred; - int r; - char randchal[REALM_SZ], instance[ANAME_SZ], *cp; - char hostname[80], *realm; - - if (cnt-- < 1) - return; - switch (*data++) { - case KRB4_ENCPWD_REJECT: - if (cnt > 0) { - printf("[ KRB4_ENCPWD refuses authentication because %.*s ]\r\n", - cnt, data); - } else - printf("[ KRB4_ENCPWD refuses authentication ]\r\n"); - auth_send_retry(); - return; - case KRB4_ENCPWD_ACCEPT: - printf("[ KRB4_ENCPWD accepts you ]\n"); - auth_finished(ap, AUTH_USER); - return; - case KRB4_ENCPWD_CHALLENGE: - /* - * Verify that the response to the challenge is correct. - */ - - gethostname(hostname, sizeof(hostname)); - realm = krb_realmofhost(hostname); - memmove((void *)challenge, (void *)data, cnt); - memset(user_passwd, 0, sizeof(user_passwd)); - local_des_read_pw_string(user_passwd, sizeof(user_passwd)-1, "Password: ", 0); - UserPassword = user_passwd; - Challenge = challenge; - strcpy(instance, RemoteHostName); - if ((cp = strchr(instance, '.')) != 0) *cp = '\0'; - - if (r = krb_mk_encpwd_req(&krb_token, KRB_SERVICE_NAME, instance, realm, Challenge, UserNameRequested, user_passwd)) { - krb_token.length = 0; - } - - if (!Data(ap, KRB4_ENCPWD_AUTH, (void *)krb_token.dat, krb_token.length)) { - return; - } - - break; - - default: - return; - } -} - - int -krb4encpwd_status(ap, name, level) - Authenticator *ap; - char *name; - int level; -{ - - if (level < AUTH_USER) - return(level); - - if (UserNameRequested && passwdok(UserNameRequested, UserPassword)) { - strcpy(name, UserNameRequested); - return(AUTH_VALID); - } else { - return(AUTH_USER); - } -} - -#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);} -#define ADDC(buf, len, c) if ((len) > 0) {*(buf)++ = (c); --(len);} - - void -krb4encpwd_printsub(data, cnt, buf, buflen) - unsigned char *data, *buf; - int cnt, buflen; -{ - char lbuf[32]; - register int i; - - buf[buflen-1] = '\0'; /* make sure its NULL terminated */ - buflen -= 1; - - switch(data[3]) { - case KRB4_ENCPWD_REJECT: /* Rejected (reason might follow) */ - strncpy((char *)buf, " REJECT ", buflen); - goto common; - - case KRB4_ENCPWD_ACCEPT: /* Accepted (name might follow) */ - strncpy((char *)buf, " ACCEPT ", buflen); - common: - BUMP(buf, buflen); - if (cnt <= 4) - break; - ADDC(buf, buflen, '"'); - for (i = 4; i < cnt; i++) - ADDC(buf, buflen, data[i]); - ADDC(buf, buflen, '"'); - ADDC(buf, buflen, '\0'); - break; - - case KRB4_ENCPWD_AUTH: /* Authentication data follows */ - strncpy((char *)buf, " AUTH", buflen); - goto common2; - - case KRB4_ENCPWD_CHALLENGE: - strncpy((char *)buf, " CHALLENGE", buflen); - goto common2; - - case KRB4_ENCPWD_ACK: - strncpy((char *)buf, " ACK", buflen); - goto common2; - - default: - sprintf(lbuf, " %d (unknown)", data[3]); - strncpy((char *)buf, lbuf, buflen); - common2: - BUMP(buf, buflen); - for (i = 4; i < cnt; i++) { - sprintf(lbuf, " %d", data[i]); - strncpy((char *)buf, lbuf, buflen); - BUMP(buf, buflen); - } - break; - } -} - -int passwdok(name, passwd) -char *name, *passwd; -{ - char *crypt(); - char *salt, *p; - struct passwd *pwd; - int passwdok_status = 0; - - if (pwd = getpwnam(name)) - salt = pwd->pw_passwd; - else salt = "xx"; - - p = crypt(passwd, salt); - - if (pwd && !strcmp(p, pwd->pw_passwd)) { - passwdok_status = 1; - } else passwdok_status = 0; - return(passwdok_status); -} - -#endif diff --git a/libtelnet/misc.c b/libtelnet/misc.c deleted file mode 100644 index 12ae9e6..0000000 --- a/libtelnet/misc.c +++ /dev/null @@ -1,109 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include - - - -#ifndef lint -#if 0 -static const char sccsid[] = "@(#)misc.c 8.1 (Berkeley) 6/4/93"; -#endif -#endif /* not lint */ - -#include -#include -#include - -#include "misc.h" -#ifdef AUTHENTICATION -#include "auth.h" -#endif -#ifdef ENCRYPTION -#include "encrypt.h" -#endif /* ENCRYPTION */ - -char *RemoteHostName; -char *LocalHostName; -char *UserNameRequested = 0; -int ConnectedCount = 0; - -#ifndef AUTHENTICATION -#define undef1 __unused -#else -#define undef1 -#endif - -void -auth_encrypt_init(char *local, char *remote, const char *name undef1, int server undef1) -{ - RemoteHostName = remote; - LocalHostName = local; -#ifdef AUTHENTICATION - auth_init(name, server); -#endif -#ifdef ENCRYPTION - encrypt_init(name, server); -#endif /* ENCRYPTION */ - if (UserNameRequested) { - free(UserNameRequested); - UserNameRequested = 0; - } -} - -#ifdef ENCRYPTION -void -auth_encrypt_user(char *name) -{ - if (UserNameRequested) - free(UserNameRequested); - UserNameRequested = name ? strdup(name) : 0; -} - -/* ARGSUSED */ -void -auth_encrypt_connect(int cnt __unused) -{ -} -#endif /* ENCRYPTION */ - -void -printd(const unsigned char *data, int cnt) -{ - if (cnt > 16) - cnt = 16; - while (cnt-- > 0) { - printf(" %02x", *data); - ++data; - } -} diff --git a/libtelnet/pk.c b/libtelnet/pk.c deleted file mode 100644 index 9b406cd..0000000 --- a/libtelnet/pk.c +++ /dev/null @@ -1,265 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * Dave Safford. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - */ - -#include - - - -/* public key routines */ -/* functions: - genkeys(char *public, char *secret) - common_key(char *secret, char *public, desData *deskey) - pk_encode(char *in, *out, DesData *deskey); - pk_decode(char *in, *out, DesData *deskey); - where - char public[HEXKEYBYTES + 1]; - char secret[HEXKEYBYTES + 1]; - */ - -#include -#include -#include -#include -#include -#include - -#include "mp.h" -#include "pk.h" - -static void adjust(char keyout[HEXKEYBYTES+1], char *keyin); - -/* - * Choose top 128 bits of the common key to use as our idea key. - */ -static void -extractideakey(MINT *ck, IdeaData *ideakey) -{ - MINT *a; - MINT *z; - short r; - int i; - short base = (1 << 8); - char *k; - - z = mp_itom(0); - a = mp_itom(0); - mp_madd(ck, z, a); - for (i = 0; i < ((KEYSIZE - 128) / 8); i++) { - mp_sdiv(a, base, a, &r); - } - k = (char *)ideakey; - for (i = 0; i < 16; i++) { - mp_sdiv(a, base, a, &r); - *k++ = r; - } - mp_mfree(z); - mp_mfree(a); -} - -/* - * Choose middle 64 bits of the common key to use as our des key, possibly - * overwriting the lower order bits by setting parity. - */ -static void -extractdeskey(MINT *ck, DesData *deskey) -{ - MINT *a; - MINT *z; - short r; - int i; - short base = (1 << 8); - char *k; - - z = mp_itom(0); - a = mp_itom(0); - mp_madd(ck, z, a); - for (i = 0; i < ((KEYSIZE - 64) / 2) / 8; i++) { - mp_sdiv(a, base, a, &r); - } - k = (char *)deskey; - for (i = 0; i < 8; i++) { - mp_sdiv(a, base, a, &r); - *k++ = r; - } - mp_mfree(z); - mp_mfree(a); -} - -/* - * get common key from my secret key and his public key - */ -void -common_key(char *xsecret, char *xpublic, IdeaData *ideakey, DesData *deskey) -{ - MINT *public; - MINT *secret; - MINT *common; - MINT *modulus = mp_xtom(HEXMODULUS); - - public = mp_xtom(xpublic); - secret = mp_xtom(xsecret); - common = mp_itom(0); - mp_pow(public, secret, modulus, common); - extractdeskey(common, deskey); - extractideakey(common, ideakey); - des_set_odd_parity(deskey); - mp_mfree(common); - mp_mfree(secret); - mp_mfree(public); - mp_mfree(modulus); -} - -/* - * Generate a seed - */ -static void -getseed(char *seed, int seedsize) -{ - int i; - - srandomdev(); - for (i = 0; i < seedsize; i++) { - seed[i] = random() & 0xff; - } -} - -/* - * Generate a random public/secret key pair - */ -void -genkeys(char *public, char *secret) -{ - size_t i; - -# define BASEBITS (8*sizeof(short) - 1) -# define BASE (1 << BASEBITS) - - MINT *pk = mp_itom(0); - MINT *sk = mp_itom(0); - MINT *tmp; - MINT *base = mp_itom(BASE); - MINT *root = mp_itom(PROOT); - MINT *modulus = mp_xtom(HEXMODULUS); - short r; - unsigned short seed[KEYSIZE/BASEBITS + 1]; - char *xkey; - - getseed((char *)seed, sizeof(seed)); - for (i = 0; i < KEYSIZE/BASEBITS + 1; i++) { - r = seed[i] % BASE; - tmp = mp_itom(r); - mp_mult(sk, base, sk); - mp_madd(sk, tmp, sk); - mp_mfree(tmp); - } - tmp = mp_itom(0); - mp_mdiv(sk, modulus, tmp, sk); - mp_mfree(tmp); - mp_pow(root, sk, modulus, pk); - xkey = mp_mtox(sk); - adjust(secret, xkey); - xkey = mp_mtox(pk); - adjust(public, xkey); - mp_mfree(sk); - mp_mfree(base); - mp_mfree(pk); - mp_mfree(root); - mp_mfree(modulus); -} - -/* - * Adjust the input key so that it is 0-filled on the left - */ -static void -adjust(char keyout[HEXKEYBYTES+1], char *keyin) -{ - char *p; - char *s; - - for (p = keyin; *p; p++) - ; - for (s = keyout + HEXKEYBYTES; p >= keyin; p--, s--) { - *s = *p; - } - while (s >= keyout) { - *s-- = '0'; - } -} - -static char hextab[17] = "0123456789ABCDEF"; - -/* given a DES key, cbc encrypt and translate input to terminated hex */ -void -pk_encode(char *in, char *out, DesData *key) -{ - char buf[256]; - DesData i; - des_key_schedule k; - int l,op,deslen; - - memset(&i,0,sizeof(i)); - memset(buf,0,sizeof(buf)); - deslen = ((strlen(in) + 7)/8)*8; - des_key_sched(key, k); - des_cbc_encrypt(in,buf,deslen, k,&i,DES_ENCRYPT); - for (l=0,op=0;l> 4]; - out[op++] = hextab[(buf[l] & 0x0f)]; - } - out[op] = '\0'; -} - -/* given a DES key, translate input from hex and decrypt */ -void -pk_decode(char *in, char *out, DesData *key) -{ - char buf[256]; - DesData i; - des_key_schedule k; - int n1,n2,op; - size_t l; - - memset(&i,0,sizeof(i)); - memset(buf,0,sizeof(buf)); - for (l=0,op=0;l '9') - n1 = in[op] - 'A' + 10; - else - n1 = in[op] - '0'; - if (in[op+1] > '9') - n2 = in[op+1] - 'A' + 10; - else - n2 = in[op+1] - '0'; - buf[l] = n1*16 +n2; - } - des_key_sched(key, k); - des_cbc_encrypt(buf,out,strlen(in)/2, k,&i,DES_DECRYPT); - out[strlen(in)/2] = '\0'; -} diff --git a/libtelnet/pk.h b/libtelnet/pk.h deleted file mode 100644 index 555d8eb..0000000 --- a/libtelnet/pk.h +++ /dev/null @@ -1,59 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * Dave Safford. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * $FreeBSD$ - */ - -/* header for the des routines that we will use */ - -typedef unsigned char byte, DesData[ 8], IdeaData[16]; -#define DesKeys des_key_schedule - -#define DES_DECRYPT 0 -#define DES_ENCRYPT 1 - -/* public key routines */ -/* functions: - genkeys(char *public, char *secret) - common_key(char *secret, char *public, desData *deskey) - where - char public[HEXKEYBYTES + 1]; - char secret[HEXKEYBYTES + 1]; - */ - -#define HEXMODULUS "d4a0ba0250b6fd2ec626e7efd637df76c716e22d0944b88b" -#define HEXKEYBYTES 48 -#define KEYSIZE 192 -#define KEYBYTES 24 -#define PROOT 3 - -extern void genkeys(char *public, char *secret); -extern void common_key(char *secret, char *public, IdeaData *common, - DesData *deskey); -extern void pk_encode(char *in, char *out, DesData *deskey); -extern void pk_decode(char *in, char *out, DesData *deskey); diff --git a/libtelnet/read_password.c b/libtelnet/read_password.c deleted file mode 100644 index 368f821..0000000 --- a/libtelnet/read_password.c +++ /dev/null @@ -1,151 +0,0 @@ -/*- - * Copyright (c) 1992, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include - - - -#ifndef lint -#if 0 -static char sccsid[] = "@(#)read_password.c 8.3 (Berkeley) 5/30/95"; -#endif -#endif /* not lint */ - -/* - * $Source: /mit/kerberos/src/lib/des/RCS/read_password.c,v $ - * $Author: jon $ - * - * Copyright 1985, 1986, 1987, 1988 by the Massachusetts Institute - * of Technology. - * - * For copying and distribution information, please see the file - * . - * - * This routine prints the supplied string to standard - * output as a prompt, and reads a password string without - * echoing. - */ - -#if defined(RSA_ENCPWD) || defined(KRB4_ENCPWD) - -#include -#include -#include -#include -#include - -static jmp_buf env; - -/*** Routines ****************************************************** */ -/* - * This version just returns the string, doesn't map to key. - * - * Returns 0 on success, non-zero on failure. - */ - -int -local_des_read_pw_string(s,max,prompt,verify) - char *s; - int max; - char *prompt; - int verify; -{ - int ok = 0; - char *ptr; - - jmp_buf old_env; - struct sgttyb tty_state; - char key_string[BUFSIZ]; - - if (max > BUFSIZ) { - return -1; - } - - /* XXX assume jmp_buf is typedef'ed to an array */ - memmove((char *)env, (char *)old_env, sizeof(env)); - if (setjmp(env)) - goto lose; - - /* save terminal state*/ - if (ioctl(0,TIOCGETP,(char *)&tty_state) == -1) - return -1; -/* - push_signals(); -*/ - /* Turn off echo */ - tty_state.sg_flags &= ~ECHO; - if (ioctl(0,TIOCSETP,(char *)&tty_state) == -1) - return -1; - while (!ok) { - (void) printf("%s", prompt); - (void) fflush(stdout); - while (!fgets(s, max, stdin)); - - if ((ptr = strchr(s, '\n'))) - *ptr = '\0'; - if (verify) { - printf("\nVerifying, please re-enter %s",prompt); - (void) fflush(stdout); - if (!fgets(key_string, sizeof(key_string), stdin)) { - clearerr(stdin); - continue; - } - if ((ptr = strchr(key_string, '\n'))) - *ptr = '\0'; - if (strcmp(s,key_string)) { - printf("\n\07\07Mismatch - try again\n"); - (void) fflush(stdout); - continue; - } - } - ok = 1; - } - -lose: - if (!ok) - memset(s, 0, max); - printf("\n"); - /* turn echo back on */ - tty_state.sg_flags |= ECHO; - if (ioctl(0,TIOCSETP,(char *)&tty_state)) - ok = 0; -/* - pop_signals(); -*/ - memmove((char *)old_env, (char *)env, sizeof(env)); - if (verify) - memset(key_string, 0, sizeof (key_string)); - s[max-1] = 0; /* force termination */ - return !ok; /* return nonzero if not okay */ -} -#endif /* defined(RSA_ENCPWD) || defined(KRB4_ENCPWD) */ diff --git a/libtelnet/rsaencpwd.c b/libtelnet/rsaencpwd.c deleted file mode 100644 index 27efc10..0000000 --- a/libtelnet/rsaencpwd.c +++ /dev/null @@ -1,475 +0,0 @@ -/*- - * Copyright (c) 1992, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include - - - -#ifndef lint -static char sccsid[] = "@(#)rsaencpwd.c 8.3 (Berkeley) 5/30/95"; -#endif /* not lint */ - - -#ifdef RSA_ENCPWD -/* - * COPYRIGHT (C) 1990 DIGITAL EQUIPMENT CORPORATION - * ALL RIGHTS RESERVED - * - * "Digital Equipment Corporation authorizes the reproduction, - * distribution and modification of this software subject to the following - * restrictions: - * - * 1. Any partial or whole copy of this software, or any modification - * thereof, must include this copyright notice in its entirety. - * - * 2. This software is supplied "as is" with no warranty of any kind, - * expressed or implied, for any purpose, including any warranty of fitness - * or merchantibility. DIGITAL assumes no responsibility for the use or - * reliability of this software, nor promises to provide any form of - * support for it on any basis. - * - * 3. Distribution of this software is authorized only if no profit or - * remuneration of any kind is received in exchange for such distribution. - * - * 4. This software produces public key authentication certificates - * bearing an expiration date established by DIGITAL and RSA Data - * Security, Inc. It may cease to generate certificates after the expiration - * date. Any modification of this software that changes or defeats - * the expiration date or its effect is unauthorized. - * - * 5. Software that will renew or extend the expiration date of - * authentication certificates produced by this software may be obtained - * from RSA Data Security, Inc., 10 Twin Dolphin Drive, Redwood City, CA - * 94065, (415)595-8782, or from DIGITAL" - * - */ - -#include -#include "arpa/telnet.h" -#include -#include -#include -#include - -#include "encrypt.h" -#include "auth.h" -#include "misc.h" -#include "cdc.h" - -extern auth_debug_mode; - -static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0, - AUTHTYPE_RSA_ENCPWD, }; -static unsigned char str_name[1024] = { IAC, SB, TELOPT_AUTHENTICATION, - TELQUAL_NAME, }; - -#define RSA_ENCPWD_AUTH 0 /* Authentication data follows */ -#define RSA_ENCPWD_REJECT 1 /* Rejected (reason might follow) */ -#define RSA_ENCPWD_ACCEPT 2 /* Accepted */ -#define RSA_ENCPWD_CHALLENGEKEY 3 /* Challenge and public key */ - -#define NAME_SZ 40 -#define CHAL_SZ 20 -#define PWD_SZ 40 - -static KTEXT_ST auth; -static char name[NAME_SZ]; -static char user_passwd[PWD_SZ]; -static char key_file[2*NAME_SZ]; -static char lhostname[NAME_SZ]; -static char challenge[CHAL_SZ]; -static int challenge_len; - - static int -Data(ap, type, d, c) - Authenticator *ap; - int type; - void *d; - int c; -{ - unsigned char *p = str_data + 4; - unsigned char *cd = (unsigned char *)d; - - if (c == -1) - c = strlen((char *)cd); - - if (0) { - printf("%s:%d: [%d] (%d)", - str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY", - str_data[3], - type, c); - printd(d, c); - printf("\r\n"); - } - *p++ = ap->type; - *p++ = ap->way; - if (type != NULL) *p++ = type; - while (c-- > 0) { - if ((*p++ = *cd++) == IAC) - *p++ = IAC; - } - *p++ = IAC; - *p++ = SE; - if (str_data[3] == TELQUAL_IS) - printsub('>', &str_data[2], p - (&str_data[2])); - return(net_write(str_data, p - str_data)); -} - - int -rsaencpwd_init(ap, server) - Authenticator *ap; - int server; -{ - char *cp; - FILE *fp; - - if (server) { - str_data[3] = TELQUAL_REPLY; - memset(key_file, 0, sizeof(key_file)); - gethostname(lhostname, sizeof(lhostname)); - if ((cp = strchr(lhostname, '.')) != 0) *cp = '\0'; - strcpy(key_file, "/etc/."); - strcat(key_file, lhostname); - strcat(key_file, "_privkey"); - if ((fp=fopen(key_file, "r"))==NULL) return(0); - fclose(fp); - } else { - str_data[3] = TELQUAL_IS; - } - return(1); -} - - int -rsaencpwd_send(ap) - Authenticator *ap; -{ - - printf("[ Trying RSAENCPWD ... ]\n"); - if (!UserNameRequested) { - return(0); - } - if (!auth_sendname(UserNameRequested, strlen(UserNameRequested))) { - return(0); - } - if (!Data(ap, NULL, (void *)NULL, 0)) { - return(0); - } - - - return(1); -} - - void -rsaencpwd_is(ap, data, cnt) - Authenticator *ap; - unsigned char *data; - int cnt; -{ - Session_Key skey; - Block datablock; - char r_passwd[PWD_SZ], r_user[NAME_SZ]; - char *cp, key[160]; - char chalkey[160], *ptr; - FILE *fp; - int r, i, j, chalkey_len, len; - time_t now; - - cnt--; - switch (*data++) { - case RSA_ENCPWD_AUTH: - memmove((void *)auth.dat, (void *)data, auth.length = cnt); - - if ((fp=fopen(key_file, "r"))==NULL) { - Data(ap, RSA_ENCPWD_REJECT, (void *)"Auth failed", -1); - auth_finished(ap, AUTH_REJECT); - return; - } - /* - * get privkey - */ - fscanf(fp, "%x;", &len); - for (i=0;iway & AUTH_HOW_MASK) == AUTH_HOW_ONE_WAY) { - register int i; - - - time(&now); - if ((now % 2) == 0) { - sprintf(challenge, "%x", now); - challenge_len = strlen(challenge); - } else { - strcpy(challenge, "randchal"); - challenge_len = 8; - } - - if ((fp=fopen(key_file, "r"))==NULL) { - Data(ap, RSA_ENCPWD_REJECT, (void *)"Auth failed", -1); - auth_finished(ap, AUTH_REJECT); - return; - } - /* - * skip privkey - */ - fscanf(fp, "%x;", &len); - for (i=0;i 0) { - printf("[ RSA_ENCPWD refuses authentication because %.*s ]\r\n", - cnt, data); - } else - printf("[ RSA_ENCPWD refuses authentication ]\r\n"); - auth_send_retry(); - return; - case RSA_ENCPWD_ACCEPT: - printf("[ RSA_ENCPWD accepts you ]\n"); - auth_finished(ap, AUTH_USER); - return; - case RSA_ENCPWD_CHALLENGEKEY: - /* - * Verify that the response to the challenge is correct. - */ - - memmove((void *)chalkey, (void *)data, cnt); - ptr = (char *) &chalkey[0]; - ptr += DecodeHeaderLength(chalkey); - if (*ptr != 0x04) { - return; - } - *ptr++; - challenge_len = DecodeValueLength(ptr); - ptr += NumEncodeLengthOctets(challenge_len); - memmove(challenge, ptr, challenge_len); - ptr += challenge_len; - if (*ptr != 0x04) { - return; - } - *ptr++; - pubkey_len = DecodeValueLength(ptr); - ptr += NumEncodeLengthOctets(pubkey_len); - memmove(pubkey, ptr, pubkey_len); - memset(user_passwd, 0, sizeof(user_passwd)); - local_des_read_pw_string(user_passwd, sizeof(user_passwd)-1, "Password: ", 0); - UserPassword = user_passwd; - Challenge = challenge; - r = init_rsa_encpwd(&token, user_passwd, challenge, challenge_len, pubkey); - if (r < 0) { - token.length = 1; - } - - if (!Data(ap, RSA_ENCPWD_AUTH, (void *)token.dat, token.length)) { - return; - } - - break; - - default: - return; - } -} - - int -rsaencpwd_status(ap, name, level) - Authenticator *ap; - char *name; - int level; -{ - - if (level < AUTH_USER) - return(level); - - if (UserNameRequested && rsaencpwd_passwdok(UserNameRequested, UserPassword)) { - strcpy(name, UserNameRequested); - return(AUTH_VALID); - } else { - return(AUTH_USER); - } -} - -#define BUMP(buf, len) while (*(buf)) {++(buf), --(len);} -#define ADDC(buf, len, c) if ((len) > 0) {*(buf)++ = (c); --(len);} - - void -rsaencpwd_printsub(data, cnt, buf, buflen) - unsigned char *data, *buf; - int cnt, buflen; -{ - char lbuf[32]; - register int i; - - buf[buflen-1] = '\0'; /* make sure its NULL terminated */ - buflen -= 1; - - switch(data[3]) { - case RSA_ENCPWD_REJECT: /* Rejected (reason might follow) */ - strncpy((char *)buf, " REJECT ", buflen); - goto common; - - case RSA_ENCPWD_ACCEPT: /* Accepted (name might follow) */ - strncpy((char *)buf, " ACCEPT ", buflen); - common: - BUMP(buf, buflen); - if (cnt <= 4) - break; - ADDC(buf, buflen, '"'); - for (i = 4; i < cnt; i++) - ADDC(buf, buflen, data[i]); - ADDC(buf, buflen, '"'); - ADDC(buf, buflen, '\0'); - break; - - case RSA_ENCPWD_AUTH: /* Authentication data follows */ - strncpy((char *)buf, " AUTH", buflen); - goto common2; - - case RSA_ENCPWD_CHALLENGEKEY: - strncpy((char *)buf, " CHALLENGEKEY", buflen); - goto common2; - - default: - sprintf(lbuf, " %d (unknown)", data[3]); - strncpy((char *)buf, lbuf, buflen); - common2: - BUMP(buf, buflen); - for (i = 4; i < cnt; i++) { - sprintf(lbuf, " %d", data[i]); - strncpy((char *)buf, lbuf, buflen); - BUMP(buf, buflen); - } - break; - } -} - -int rsaencpwd_passwdok(name, passwd) -char *name, *passwd; -{ - char *crypt(); - char *salt, *p; - struct passwd *pwd; - int passwdok_status = 0; - - if (pwd = getpwnam(name)) - salt = pwd->pw_passwd; - else salt = "xx"; - - p = crypt(passwd, salt); - - if (pwd && !strcmp(p, pwd->pw_passwd)) { - passwdok_status = 1; - } else passwdok_status = 0; - return(passwdok_status); -} - -#endif diff --git a/libtelnet/sra.c b/libtelnet/sra.c deleted file mode 100644 index 636ddff..0000000 --- a/libtelnet/sra.c +++ /dev/null @@ -1,602 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * Dave Safford. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - */ - -#include - - - -#ifdef SRA -#ifdef ENCRYPTION -#include -#include "arpa/telnet.h" -#include -#include -#include -#include -#include -#include - -#ifndef NOPAM -#include -#else -#include -#endif - -#include "auth.h" -#include "misc.h" -#include "encrypt.h" -#include "pk.h" - -char pka[HEXKEYBYTES+1], ska[HEXKEYBYTES+1], pkb[HEXKEYBYTES+1]; -char *user, *pass, *xuser, *xpass; -DesData ck; -IdeaData ik; - -extern int auth_debug_mode; -extern char line[]; - -static int sra_valid = 0; -static int passwd_sent = 0; - -static unsigned char str_data[1024] = { IAC, SB, TELOPT_AUTHENTICATION, 0, - AUTHTYPE_SRA, }; - -#define SRA_KEY 0 -#define SRA_USER 1 -#define SRA_CONTINUE 2 -#define SRA_PASS 3 -#define SRA_ACCEPT 4 -#define SRA_REJECT 5 - -static int check_user(char *, char *); - -/* support routine to send out authentication message */ -static int -Data(Authenticator *ap, int type, void *d, int c) -{ - unsigned char *p = str_data + 4; - unsigned char *cd = (unsigned char *)d; - - if (c == -1) - c = strlen((char *)cd); - - if (auth_debug_mode) { - printf("%s:%d: [%d] (%d)", - str_data[3] == TELQUAL_IS ? ">>>IS" : ">>>REPLY", - str_data[3], - type, c); - printd(d, c); - printf("\r\n"); - } - *p++ = ap->type; - *p++ = ap->way; - *p++ = type; - while (c-- > 0) { - if ((*p++ = *cd++) == IAC) - *p++ = IAC; - } - *p++ = IAC; - *p++ = SE; - if (str_data[3] == TELQUAL_IS) - printsub('>', &str_data[2], p - (&str_data[2])); - return(net_write(str_data, p - str_data)); -} - -int -sra_init(Authenticator *ap __unused, int server) -{ - if (server) - str_data[3] = TELQUAL_REPLY; - else - str_data[3] = TELQUAL_IS; - - user = (char *)malloc(256); - xuser = (char *)malloc(513); - pass = (char *)malloc(256); - xpass = (char *)malloc(513); - - if (user == NULL || xuser == NULL || pass == NULL || xpass == - NULL) - return 0; /* malloc failed */ - - passwd_sent = 0; - - genkeys(pka,ska); - return(1); -} - -/* client received a go-ahead for sra */ -int -sra_send(Authenticator *ap) -{ - /* send PKA */ - - if (auth_debug_mode) - printf("Sent PKA to server.\r\n" ); - printf("Trying SRA secure login:\r\n"); - if (!Data(ap, SRA_KEY, (void *)pka, HEXKEYBYTES)) { - if (auth_debug_mode) - printf("Not enough room for authentication data\r\n"); - return(0); - } - - return(1); -} - -/* server received an IS -- could be SRA KEY, USER, or PASS */ -void -sra_is(Authenticator *ap, unsigned char *data, int cnt) -{ - int valid; - Session_Key skey; - - if (cnt-- < 1) - goto bad; - switch (*data++) { - - case SRA_KEY: - if (cnt < HEXKEYBYTES) { - Data(ap, SRA_REJECT, (void *)0, 0); - auth_finished(ap, AUTH_USER); - if (auth_debug_mode) { - printf("SRA user rejected for bad PKB\r\n"); - } - return; - } - if (auth_debug_mode) - printf("Sent pka\r\n"); - if (!Data(ap, SRA_KEY, (void *)pka, HEXKEYBYTES)) { - if (auth_debug_mode) - printf("Not enough room\r\n"); - return; - } - memcpy(pkb,data,HEXKEYBYTES); - pkb[HEXKEYBYTES] = '\0'; - common_key(ska,pkb,&ik,&ck); - return; - - case SRA_USER: - /* decode KAB(u) */ - if (cnt > 512) /* Attempted buffer overflow */ - break; - memcpy(xuser,data,cnt); - xuser[cnt] = '\0'; - pk_decode(xuser,user,&ck); - auth_encrypt_user(user); - Data(ap, SRA_CONTINUE, (void *)0, 0); - - return; - - case SRA_PASS: - if (cnt > 512) /* Attempted buffer overflow */ - break; - /* decode KAB(P) */ - memcpy(xpass,data,cnt); - xpass[cnt] = '\0'; - pk_decode(xpass,pass,&ck); - - /* check user's password */ - valid = check_user(user,pass); - - if(valid) { - Data(ap, SRA_ACCEPT, (void *)0, 0); - skey.data = ck; - skey.type = SK_DES; - skey.length = 8; - encrypt_session_key(&skey, 1); - - sra_valid = 1; - auth_finished(ap, AUTH_VALID); - if (auth_debug_mode) { - printf("SRA user accepted\r\n"); - } - } - else { - Data(ap, SRA_CONTINUE, (void *)0, 0); -/* - Data(ap, SRA_REJECT, (void *)0, 0); - sra_valid = 0; - auth_finished(ap, AUTH_REJECT); -*/ - if (auth_debug_mode) { - printf("SRA user failed\r\n"); - } - } - return; - - default: - if (auth_debug_mode) - printf("Unknown SRA option %d\r\n", data[-1]); - } -bad: - Data(ap, SRA_REJECT, 0, 0); - sra_valid = 0; - auth_finished(ap, AUTH_REJECT); -} - -/* client received REPLY -- could be SRA KEY, CONTINUE, ACCEPT, or REJECT */ -void -sra_reply(Authenticator *ap, unsigned char *data, int cnt) -{ - char uprompt[256],tuser[256]; - Session_Key skey; - size_t i; - - if (cnt-- < 1) - return; - switch (*data++) { - - case SRA_KEY: - /* calculate common key */ - if (cnt < HEXKEYBYTES) { - if (auth_debug_mode) { - printf("SRA user rejected for bad PKB\r\n"); - } - return; - } - memcpy(pkb,data,HEXKEYBYTES); - pkb[HEXKEYBYTES] = '\0'; - - common_key(ska,pkb,&ik,&ck); - - enc_user: - - /* encode user */ - memset(tuser,0,sizeof(tuser)); - sprintf(uprompt,"User (%s): ",UserNameRequested); - telnet_gets(uprompt,tuser,255,1); - if (tuser[0] == '\n' || tuser[0] == '\r' ) - strcpy(user,UserNameRequested); - else { - /* telnet_gets leaves the newline on */ - for(i=0;i 0) {*(buf)++ = (c); --(len);} - -void -sra_printsub(unsigned char *data, int cnt, unsigned char *buf, int buflen) -{ - char lbuf[32]; - int i; - - buf[buflen-1] = '\0'; /* make sure its NULL terminated */ - buflen -= 1; - - switch(data[3]) { - - case SRA_CONTINUE: - strncpy((char *)buf, " CONTINUE ", buflen); - goto common; - - case SRA_REJECT: /* Rejected (reason might follow) */ - strncpy((char *)buf, " REJECT ", buflen); - goto common; - - case SRA_ACCEPT: /* Accepted (name might follow) */ - strncpy((char *)buf, " ACCEPT ", buflen); - - common: - BUMP(buf, buflen); - if (cnt <= 4) - break; - ADDC(buf, buflen, '"'); - for (i = 4; i < cnt; i++) - ADDC(buf, buflen, data[i]); - ADDC(buf, buflen, '"'); - ADDC(buf, buflen, '\0'); - break; - - case SRA_KEY: /* Authentication data follows */ - strncpy((char *)buf, " KEY ", buflen); - goto common2; - - case SRA_USER: - strncpy((char *)buf, " USER ", buflen); - goto common2; - - case SRA_PASS: - strncpy((char *)buf, " PASS ", buflen); - goto common2; - - default: - sprintf(lbuf, " %d (unknown)", data[3]); - strncpy((char *)buf, lbuf, buflen); - common2: - BUMP(buf, buflen); - for (i = 4; i < cnt; i++) { - sprintf(lbuf, " %d", data[i]); - strncpy((char *)buf, lbuf, buflen); - BUMP(buf, buflen); - } - break; - } -} - -static int -isroot(const char *usr) -{ - struct passwd *pwd; - - if ((pwd=getpwnam(usr))==NULL) - return 0; - return (!pwd->pw_uid); -} - -static int -rootterm(char *ttyn) -{ - struct ttyent *t; - - return ((t = getttynam(ttyn)) && t->ty_status & TTY_SECURE); -} - -#ifdef NOPAM -static int -check_user(char *name, char *cred) -{ - char *cp; - char *xpasswd, *salt; - - if (isroot(name) && !rootterm(line)) - { - crypt("AA","*"); /* Waste some time to simulate success */ - return(0); - } - - if (pw = sgetpwnam(name)) { - if (pw->pw_shell == NULL) { - pw = (struct passwd *) NULL; - return(0); - } - - salt = pw->pw_passwd; - xpasswd = crypt(cred, salt); - /* The strcmp does not catch null passwords! */ - if (pw == NULL || *pw->pw_passwd == '\0' || - strcmp(xpasswd, pw->pw_passwd)) { - pw = (struct passwd *) NULL; - return(0); - } - return(1); - } - return(0); -} -#else - -/* - * The following is stolen from ftpd, which stole it from the imap-uw - * PAM module and login.c. It is needed because we can't really - * "converse" with the user, having already gone to the trouble of - * getting their username and password through an encrypted channel. - */ - -#define COPY_STRING(s) (s ? strdup(s):NULL) - -struct cred_t { - const char *uname; - const char *pass; -}; -typedef struct cred_t cred_t; - -static int -auth_conv(int num_msg, const struct pam_message **msg, struct pam_response **resp, void *appdata) -{ - int i; - cred_t *cred = (cred_t *) appdata; - struct pam_response *reply = - malloc(sizeof(struct pam_response) * num_msg); - - if (reply == NULL) - return PAM_BUF_ERR; - - for (i = 0; i < num_msg; i++) { - switch (msg[i]->msg_style) { - case PAM_PROMPT_ECHO_ON: /* assume want user name */ - reply[i].resp_retcode = PAM_SUCCESS; - reply[i].resp = COPY_STRING(cred->uname); - /* PAM frees resp. */ - break; - case PAM_PROMPT_ECHO_OFF: /* assume want password */ - reply[i].resp_retcode = PAM_SUCCESS; - reply[i].resp = COPY_STRING(cred->pass); - /* PAM frees resp. */ - break; - case PAM_TEXT_INFO: - case PAM_ERROR_MSG: - reply[i].resp_retcode = PAM_SUCCESS; - reply[i].resp = NULL; - break; - default: /* unknown message style */ - free(reply); - return PAM_CONV_ERR; - } - } - - *resp = reply; - return PAM_SUCCESS; -} - -/* - * The PAM version as a side effect may put a new username in *name. - */ -static int -check_user(char *name, char *cred) -{ - pam_handle_t *pamh = NULL; - const void *item; - int rval; - int e; - cred_t auth_cred = { name, cred }; - struct pam_conv conv = { &auth_conv, &auth_cred }; - - e = pam_start("telnetd", name, &conv, &pamh); - if (e != PAM_SUCCESS) { - syslog(LOG_ERR, "pam_start: %s", pam_strerror(pamh, e)); - return 0; - } - -#if 0 /* Where can we find this value? */ - e = pam_set_item(pamh, PAM_RHOST, remotehost); - if (e != PAM_SUCCESS) { - syslog(LOG_ERR, "pam_set_item(PAM_RHOST): %s", - pam_strerror(pamh, e)); - return 0; - } -#endif - - e = pam_authenticate(pamh, 0); - switch (e) { - case PAM_SUCCESS: - /* - * With PAM we support the concept of a "template" - * user. The user enters a login name which is - * authenticated by PAM, usually via a remote service - * such as RADIUS or TACACS+. If authentication - * succeeds, a different but related "template" name - * is used for setting the credentials, shell, and - * home directory. The name the user enters need only - * exist on the remote authentication server, but the - * template name must be present in the local password - * database. - * - * This is supported by two various mechanisms in the - * individual modules. However, from the application's - * point of view, the template user is always passed - * back as a changed value of the PAM_USER item. - */ - if ((e = pam_get_item(pamh, PAM_USER, &item)) == - PAM_SUCCESS) { - strcpy(name, item); - } else - syslog(LOG_ERR, "Couldn't get PAM_USER: %s", - pam_strerror(pamh, e)); - if (isroot(name) && !rootterm(line)) - rval = 0; - else - rval = 1; - break; - - case PAM_AUTH_ERR: - case PAM_USER_UNKNOWN: - case PAM_MAXTRIES: - rval = 0; - break; - - default: - syslog(LOG_ERR, "auth_pam: %s", pam_strerror(pamh, e)); - rval = 0; - break; - } - - if ((e = pam_end(pamh, e)) != PAM_SUCCESS) { - syslog(LOG_ERR, "pam_end: %s", pam_strerror(pamh, e)); - rval = 0; - } - return rval; -} - -#endif - -#endif /* ENCRYPTION */ -#endif /* SRA */ diff --git a/telnet/authenc.c b/telnet/authenc.c deleted file mode 100644 index d8a7fea..0000000 --- a/telnet/authenc.c +++ /dev/null @@ -1,111 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#if 0 -#ifndef lint -static const char sccsid[] = "@(#)authenc.c 8.1 (Berkeley) 6/6/93"; -#endif -#endif -#include - - -#ifdef AUTHENTICATION -#ifdef ENCRYPTION -#include -#include "arpa/telnet.h" -#include -#include -#include "libtelnet/encrypt.h" -#include "libtelnet/misc.h" - -#include "general.h" -#include "ring.h" -#include "externs.h" -#include "defines.h" -#include "types.h" - -int -net_write(unsigned char *str, int len) -{ - if (NETROOM() > len) { - ring_supply_data(&netoring, str, len); - if (str[0] == IAC && str[1] == SE) - printsub('>', &str[2], len-2); - return(len); - } - return(0); -} - -void -net_encrypt(void) -{ -#ifdef ENCRYPTION - if (encrypt_output) - ring_encrypt(&netoring, encrypt_output); - else - ring_clearto(&netoring); -#endif /* ENCRYPTION */ -} - -int -telnet_spin(void) -{ - return(-1); -} - -char * -telnet_getenv(char *val) -{ - return((char *)env_getvalue((unsigned char *)val)); -} - -char * -telnet_gets(const char *prom, char *result, int length, int echo) -{ - extern int globalmode; - int om = globalmode; - char *res; - - TerminalNewMode(-1); - if (echo) { - printf("%s", prom); - res = fgets(result, length, stdin); - } else if ((res = getpass(prom))) { - strncpy(result, res, length); - res = result; - } - TerminalNewMode(om); - return(res); -} -#endif /* ENCRYPTION */ -#endif /* AUTHENTICATION */ diff --git a/telnetd/authenc.c b/telnetd/authenc.c deleted file mode 100644 index b3706cc..0000000 --- a/telnetd/authenc.c +++ /dev/null @@ -1,90 +0,0 @@ -/*- - * Copyright (c) 1991, 1993 - * The Regents of the University of California. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#if 0 -#ifndef lint -static const char sccsid[] = "@(#)authenc.c 8.2 (Berkeley) 5/30/95"; -#endif -#endif -#include - - -#ifdef AUTHENTICATION -#ifdef ENCRYPTION -/* Above "#ifdef"s actually "or"'ed together. XXX MarkM - */ -#include "telnetd.h" -#include "libtelnet/misc.h" - -int -net_write(unsigned char *str, int len) -{ - if (nfrontp + len < netobuf + BUFSIZ) { - output_datalen(str, len); - return(len); - } - return(0); -} - -void -net_encrypt(void) -{ -#ifdef ENCRYPTION - char *s = (nclearto > nbackp) ? nclearto : nbackp; - if (s < nfrontp && encrypt_output) { - (*encrypt_output)((unsigned char *)s, nfrontp - s); - } - nclearto = nfrontp; -#endif /* ENCRYPTION */ -} - -int -telnet_spin(void) -{ - ttloop(); - return(0); -} - -char * -telnet_getenv(char *val) -{ - return(getenv(val)); -} - -char * -telnet_gets(const char *prompt __unused, char *result __unused, int length __unused, int echo __unused) -{ - return(NULL); -} -#endif /* ENCRYPTION */ -#endif /* AUTHENTICATION */