1 /* 2 * Copyright 2002 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * Miscellaneous routines needed by the telnet client for authentication 8 * and / or encryption. 9 */ 10 11 /* 12 * Copyright (c) 1991, 1993 13 * The Regents of the University of California. All rights reserved. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 3. All advertising materials mentioning features or use of this software 24 * must display the following acknowledgement: 25 * This product includes software developed by the University of 26 * California, Berkeley and its contributors. 27 * 4. Neither the name of the University nor the names of its contributors 28 * may be used to endorse or promote products derived from this software 29 * without specific prior written permission. 30 * 31 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 32 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 33 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 34 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 35 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 39 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 40 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 41 * SUCH DAMAGE. 42 */ 43 44 #ifndef lint 45 static char sccsid[] = "@(#)authenc.c 8.1 (Berkeley) 6/6/93"; 46 #endif /* not lint */ 47 48 #include <sys/types.h> 49 #include <arpa/telnet.h> 50 51 #include "general.h" 52 #include "ring.h" 53 #include "externs.h" 54 #include "defines.h" 55 #include "types.h" 56 57 char *RemoteHostName = NULL; 58 char *UserNameRequested = NULL; 59 60 #define MAXNETDATA 16 61 62 /* 63 * Get ready to do authentication and encryption by calling their 64 * init routines, and clearing the user name variable 65 */ 66 /* ARGSUSED */ 67 void 68 auth_encrypt_init(char *local, char *remote, char *name) 69 { 70 RemoteHostName = remote; 71 72 auth_init(name); 73 74 encrypt_init(name); 75 76 if (UserNameRequested) { 77 free(UserNameRequested); 78 UserNameRequested = NULL; 79 } 80 } 81 82 /* 83 * Set the user name variable. This is the user name used from now 84 * on for authentication and encryption 85 */ 86 void 87 auth_encrypt_user(char *name) 88 { 89 if (UserNameRequested) 90 free(UserNameRequested); 91 UserNameRequested = name ? strdup(name) : NULL; 92 } 93 94 int 95 net_write(unsigned char *str, int len) 96 { 97 if (NETROOM() > len) { 98 ring_supply_data(&netoring, str, len); 99 if (str[0] == IAC && str[1] == SE) 100 printsub('>', &str[2], len - 2); 101 return (len); 102 } 103 return (0); 104 } 105 106 void 107 net_encrypt(void) 108 { 109 if (encrypt_output) 110 ring_encrypt(&netoring, encrypt_output); 111 else 112 ring_clearto(&netoring); 113 } 114 115 /* 116 * Spin to wait for authentication to complete 117 * This allows for a timeout 118 */ 119 void 120 telnet_spin(void) 121 { 122 extern boolean_t scheduler_lockout_tty; 123 124 scheduler_lockout_tty = B_TRUE; 125 (void) Scheduler(0); 126 scheduler_lockout_tty = B_FALSE; 127 } 128 129 130 /* 131 * Used to print out unsigned chars as decimals for debugging options 132 */ 133 void 134 printd(unsigned char *data, int cnt) 135 { 136 cnt = (cnt < MAXNETDATA) ? cnt:MAXNETDATA; 137 while (cnt-- > 0) 138 (void) printf(" %02x", *data++); 139 } 140