1 /* 2 * Copyright (c) 1989, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the University nor the names of its contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * @(#)defs.h 8.1 (Berkeley) 6/4/93 30 * $FreeBSD: src/crypto/telnet/telnetd/defs.h,v 1.1.1.1.8.1 2002/04/13 10:59:08 markm Exp $ 31 */ 32 33 /* 34 * Telnet server defines 35 */ 36 #include <sys/types.h> 37 #include <sys/param.h> 38 39 #ifndef BSD 40 # define BSD 43 41 #endif 42 43 #if defined(PRINTOPTIONS) && defined(DIAGNOSTICS) 44 #define TELOPTS 45 #define TELCMDS 46 #define SLC_NAMES 47 #endif 48 49 #if defined(SYSV_TERMIO) && !defined(USE_TERMIO) 50 # define USE_TERMIO 51 #endif 52 53 #include <sys/socket.h> 54 #include <sys/wait.h> 55 #include <fcntl.h> 56 #include <sys/file.h> 57 #include <sys/stat.h> 58 #include <sys/time.h> 59 #ifndef FILIO_H 60 #include <sys/ioctl.h> 61 #else 62 #include <sys/filio.h> 63 #endif 64 65 #include <netinet/in.h> 66 67 #include <arpa/telnet.h> 68 69 #include <stdio.h> 70 #include <stdlib.h> 71 #include <signal.h> 72 #include <errno.h> 73 #include <netdb.h> 74 #include <syslog.h> 75 #ifndef LOG_DAEMON 76 #define LOG_DAEMON 0 77 #endif 78 #include <ctype.h> 79 #ifndef NO_STRING_H 80 #include <string.h> 81 #else 82 #include <strings.h> 83 #endif 84 85 #ifndef USE_TERMIO 86 #include <sgtty.h> 87 #else 88 # ifdef SYSV_TERMIO 89 # include <termio.h> 90 # else 91 # include <termios.h> 92 # endif 93 #endif 94 #if !defined(USE_TERMIO) || defined(NO_CC_T) 95 typedef unsigned char cc_t; 96 #endif 97 98 #include <unistd.h> 99 100 #ifndef _POSIX_VDISABLE 101 # ifdef VDISABLE 102 # define _POSIX_VDISABLE VDISABLE 103 # else 104 # define _POSIX_VDISABLE ((unsigned char)'\377') 105 # endif 106 #endif 107 108 #if !defined(TIOCSCTTY) && defined(TCSETCTTY) 109 # define TIOCSCTTY TCSETCTTY 110 #endif 111 112 #ifndef FD_SET 113 #ifndef HAVE_fd_set 114 typedef struct fd_set { int fds_bits[1]; } fd_set; 115 #endif 116 117 #define FD_SET(n, p) ((p)->fds_bits[0] |= (1<<(n))) 118 #define FD_CLR(n, p) ((p)->fds_bits[0] &= ~(1<<(n))) 119 #define FD_ISSET(n, p) ((p)->fds_bits[0] & (1<<(n))) 120 #define FD_ZERO(p) ((p)->fds_bits[0] = 0) 121 #endif /* FD_SET */ 122 123 /* 124 * I/O data buffers defines 125 */ 126 #define NETSLOP 64 127 128 #define NIACCUM(c) { *netip++ = c; \ 129 ncc++; \ 130 } 131 132 /* clock manipulations */ 133 #define settimer(x) (clocks.x = ++clocks.system) 134 #define sequenceIs(x,y) (clocks.x < clocks.y) 135 136 /* 137 * Linemode support states, in decreasing order of importance 138 */ 139 #define REAL_LINEMODE 0x04 140 #define KLUDGE_OK 0x03 141 #define NO_AUTOKLUDGE 0x02 142 #define KLUDGE_LINEMODE 0x01 143 #define NO_LINEMODE 0x00 144 145 /* 146 * Structures of information for each special character function. 147 */ 148 typedef struct { 149 unsigned char flag; /* the flags for this function */ 150 cc_t val; /* the value of the special character */ 151 } slcent, *Slcent; 152 153 typedef struct { 154 slcent defset; /* the default settings */ 155 slcent current; /* the current settings */ 156 cc_t *sptr; /* a pointer to the char in */ 157 /* system data structures */ 158 } slcfun, *Slcfun; 159 160 #ifdef DIAGNOSTICS 161 /* 162 * Diagnostics capabilities 163 */ 164 #define TD_REPORT 0x01 /* Report operations to client */ 165 #define TD_EXERCISE 0x02 /* Exercise client's implementation */ 166 #define TD_NETDATA 0x04 /* Display received data stream */ 167 #define TD_PTYDATA 0x08 /* Display data passed to pty */ 168 #define TD_OPTIONS 0x10 /* Report just telnet options */ 169 #endif /* DIAGNOSTICS */ 170 171 /* 172 * We keep track of each side of the option negotiation. 173 */ 174 175 #define MY_STATE_WILL 0x01 176 #define MY_WANT_STATE_WILL 0x02 177 #define MY_STATE_DO 0x04 178 #define MY_WANT_STATE_DO 0x08 179 180 /* 181 * Macros to check the current state of things 182 */ 183 184 #define my_state_is_do(opt) (options[opt]&MY_STATE_DO) 185 #define my_state_is_will(opt) (options[opt]&MY_STATE_WILL) 186 #define my_want_state_is_do(opt) (options[opt]&MY_WANT_STATE_DO) 187 #define my_want_state_is_will(opt) (options[opt]&MY_WANT_STATE_WILL) 188 189 #define my_state_is_dont(opt) (!my_state_is_do(opt)) 190 #define my_state_is_wont(opt) (!my_state_is_will(opt)) 191 #define my_want_state_is_dont(opt) (!my_want_state_is_do(opt)) 192 #define my_want_state_is_wont(opt) (!my_want_state_is_will(opt)) 193 194 #define set_my_state_do(opt) (options[opt] |= MY_STATE_DO) 195 #define set_my_state_will(opt) (options[opt] |= MY_STATE_WILL) 196 #define set_my_want_state_do(opt) (options[opt] |= MY_WANT_STATE_DO) 197 #define set_my_want_state_will(opt) (options[opt] |= MY_WANT_STATE_WILL) 198 199 #define set_my_state_dont(opt) (options[opt] &= ~MY_STATE_DO) 200 #define set_my_state_wont(opt) (options[opt] &= ~MY_STATE_WILL) 201 #define set_my_want_state_dont(opt) (options[opt] &= ~MY_WANT_STATE_DO) 202 #define set_my_want_state_wont(opt) (options[opt] &= ~MY_WANT_STATE_WILL) 203 204 /* 205 * Tricky code here. What we want to know is if the MY_STATE_WILL 206 * and MY_WANT_STATE_WILL bits have the same value. Since the two 207 * bits are adjacent, a little arithmatic will show that by adding 208 * in the lower bit, the upper bit will be set if the two bits were 209 * different, and clear if they were the same. 210 */ 211 #define my_will_wont_is_changing(opt) \ 212 ((options[opt]+MY_STATE_WILL) & MY_WANT_STATE_WILL) 213 214 #define my_do_dont_is_changing(opt) \ 215 ((options[opt]+MY_STATE_DO) & MY_WANT_STATE_DO) 216 217 /* 218 * Make everything symetrical 219 */ 220 221 #define HIS_STATE_WILL MY_STATE_DO 222 #define HIS_WANT_STATE_WILL MY_WANT_STATE_DO 223 #define HIS_STATE_DO MY_STATE_WILL 224 #define HIS_WANT_STATE_DO MY_WANT_STATE_WILL 225 226 #define his_state_is_do my_state_is_will 227 #define his_state_is_will my_state_is_do 228 #define his_want_state_is_do my_want_state_is_will 229 #define his_want_state_is_will my_want_state_is_do 230 231 #define his_state_is_dont my_state_is_wont 232 #define his_state_is_wont my_state_is_dont 233 #define his_want_state_is_dont my_want_state_is_wont 234 #define his_want_state_is_wont my_want_state_is_dont 235 236 #define set_his_state_do set_my_state_will 237 #define set_his_state_will set_my_state_do 238 #define set_his_want_state_do set_my_want_state_will 239 #define set_his_want_state_will set_my_want_state_do 240 241 #define set_his_state_dont set_my_state_wont 242 #define set_his_state_wont set_my_state_dont 243 #define set_his_want_state_dont set_my_want_state_wont 244 #define set_his_want_state_wont set_my_want_state_dont 245 246 #define his_will_wont_is_changing my_do_dont_is_changing 247 #define his_do_dont_is_changing my_will_wont_is_changing 248