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 * $DragonFly: src/crypto/telnet/telnetd/defs.h,v 1.2 2003/06/17 04:24:37 dillon Exp $ 32 */ 33 34 /* 35 * Telnet server defines 36 */ 37 #include <sys/types.h> 38 #include <sys/param.h> 39 40 #ifndef BSD 41 # define BSD 43 42 #endif 43 44 #if defined(PRINTOPTIONS) && defined(DIAGNOSTICS) 45 #define TELOPTS 46 #define TELCMDS 47 #define SLC_NAMES 48 #endif 49 50 #if defined(SYSV_TERMIO) && !defined(USE_TERMIO) 51 # define USE_TERMIO 52 #endif 53 54 #include <sys/socket.h> 55 #include <sys/wait.h> 56 #include <fcntl.h> 57 #include <sys/file.h> 58 #include <sys/stat.h> 59 #include <sys/time.h> 60 #ifndef FILIO_H 61 #include <sys/ioctl.h> 62 #else 63 #include <sys/filio.h> 64 #endif 65 66 #include <netinet/in.h> 67 68 #include <arpa/telnet.h> 69 70 #include <stdio.h> 71 #ifdef __STDC__ 72 #include <stdlib.h> 73 #endif 74 #include <signal.h> 75 #include <errno.h> 76 #include <netdb.h> 77 #include <syslog.h> 78 #ifndef LOG_DAEMON 79 #define LOG_DAEMON 0 80 #endif 81 #ifndef LOG_ODELAY 82 #define LOG_ODELAY 0 83 #endif 84 #include <ctype.h> 85 #ifndef NO_STRING_H 86 #include <string.h> 87 #else 88 #include <strings.h> 89 #endif 90 91 #ifndef USE_TERMIO 92 #include <sgtty.h> 93 #else 94 # ifdef SYSV_TERMIO 95 # include <termio.h> 96 # else 97 # include <termios.h> 98 # endif 99 #endif 100 #if !defined(USE_TERMIO) || defined(NO_CC_T) 101 typedef unsigned char cc_t; 102 #endif 103 104 #ifdef __STDC__ 105 #include <unistd.h> 106 #endif 107 108 #ifndef _POSIX_VDISABLE 109 # ifdef VDISABLE 110 # define _POSIX_VDISABLE VDISABLE 111 # else 112 # define _POSIX_VDISABLE ((unsigned char)'\377') 113 # endif 114 #endif 115 116 #if !defined(TIOCSCTTY) && defined(TCSETCTTY) 117 # define TIOCSCTTY TCSETCTTY 118 #endif 119 120 #ifndef FD_SET 121 #ifndef HAVE_fd_set 122 typedef struct fd_set { int fds_bits[1]; } fd_set; 123 #endif 124 125 #define FD_SET(n, p) ((p)->fds_bits[0] |= (1<<(n))) 126 #define FD_CLR(n, p) ((p)->fds_bits[0] &= ~(1<<(n))) 127 #define FD_ISSET(n, p) ((p)->fds_bits[0] & (1<<(n))) 128 #define FD_ZERO(p) ((p)->fds_bits[0] = 0) 129 #endif /* FD_SET */ 130 131 /* 132 * I/O data buffers defines 133 */ 134 #define NETSLOP 64 135 136 #define NIACCUM(c) { *netip++ = c; \ 137 ncc++; \ 138 } 139 140 /* clock manipulations */ 141 #define settimer(x) (clocks.x = ++clocks.system) 142 #define sequenceIs(x,y) (clocks.x < clocks.y) 143 144 /* 145 * Linemode support states, in decreasing order of importance 146 */ 147 #define REAL_LINEMODE 0x04 148 #define KLUDGE_OK 0x03 149 #define NO_AUTOKLUDGE 0x02 150 #define KLUDGE_LINEMODE 0x01 151 #define NO_LINEMODE 0x00 152 153 /* 154 * Structures of information for each special character function. 155 */ 156 typedef struct { 157 unsigned char flag; /* the flags for this function */ 158 cc_t val; /* the value of the special character */ 159 } slcent, *Slcent; 160 161 typedef struct { 162 slcent defset; /* the default settings */ 163 slcent current; /* the current settings */ 164 cc_t *sptr; /* a pointer to the char in */ 165 /* system data structures */ 166 } slcfun, *Slcfun; 167 168 #ifdef DIAGNOSTICS 169 /* 170 * Diagnostics capabilities 171 */ 172 #define TD_REPORT 0x01 /* Report operations to client */ 173 #define TD_EXERCISE 0x02 /* Exercise client's implementation */ 174 #define TD_NETDATA 0x04 /* Display received data stream */ 175 #define TD_PTYDATA 0x08 /* Display data passed to pty */ 176 #define TD_OPTIONS 0x10 /* Report just telnet options */ 177 #endif /* DIAGNOSTICS */ 178 179 /* 180 * We keep track of each side of the option negotiation. 181 */ 182 183 #define MY_STATE_WILL 0x01 184 #define MY_WANT_STATE_WILL 0x02 185 #define MY_STATE_DO 0x04 186 #define MY_WANT_STATE_DO 0x08 187 188 /* 189 * Macros to check the current state of things 190 */ 191 192 #define my_state_is_do(opt) (options[opt]&MY_STATE_DO) 193 #define my_state_is_will(opt) (options[opt]&MY_STATE_WILL) 194 #define my_want_state_is_do(opt) (options[opt]&MY_WANT_STATE_DO) 195 #define my_want_state_is_will(opt) (options[opt]&MY_WANT_STATE_WILL) 196 197 #define my_state_is_dont(opt) (!my_state_is_do(opt)) 198 #define my_state_is_wont(opt) (!my_state_is_will(opt)) 199 #define my_want_state_is_dont(opt) (!my_want_state_is_do(opt)) 200 #define my_want_state_is_wont(opt) (!my_want_state_is_will(opt)) 201 202 #define set_my_state_do(opt) (options[opt] |= MY_STATE_DO) 203 #define set_my_state_will(opt) (options[opt] |= MY_STATE_WILL) 204 #define set_my_want_state_do(opt) (options[opt] |= MY_WANT_STATE_DO) 205 #define set_my_want_state_will(opt) (options[opt] |= MY_WANT_STATE_WILL) 206 207 #define set_my_state_dont(opt) (options[opt] &= ~MY_STATE_DO) 208 #define set_my_state_wont(opt) (options[opt] &= ~MY_STATE_WILL) 209 #define set_my_want_state_dont(opt) (options[opt] &= ~MY_WANT_STATE_DO) 210 #define set_my_want_state_wont(opt) (options[opt] &= ~MY_WANT_STATE_WILL) 211 212 /* 213 * Tricky code here. What we want to know is if the MY_STATE_WILL 214 * and MY_WANT_STATE_WILL bits have the same value. Since the two 215 * bits are adjacent, a little arithmatic will show that by adding 216 * in the lower bit, the upper bit will be set if the two bits were 217 * different, and clear if they were the same. 218 */ 219 #define my_will_wont_is_changing(opt) \ 220 ((options[opt]+MY_STATE_WILL) & MY_WANT_STATE_WILL) 221 222 #define my_do_dont_is_changing(opt) \ 223 ((options[opt]+MY_STATE_DO) & MY_WANT_STATE_DO) 224 225 /* 226 * Make everything symetrical 227 */ 228 229 #define HIS_STATE_WILL MY_STATE_DO 230 #define HIS_WANT_STATE_WILL MY_WANT_STATE_DO 231 #define HIS_STATE_DO MY_STATE_WILL 232 #define HIS_WANT_STATE_DO MY_WANT_STATE_WILL 233 234 #define his_state_is_do my_state_is_will 235 #define his_state_is_will my_state_is_do 236 #define his_want_state_is_do my_want_state_is_will 237 #define his_want_state_is_will my_want_state_is_do 238 239 #define his_state_is_dont my_state_is_wont 240 #define his_state_is_wont my_state_is_dont 241 #define his_want_state_is_dont my_want_state_is_wont 242 #define his_want_state_is_wont my_want_state_is_dont 243 244 #define set_his_state_do set_my_state_will 245 #define set_his_state_will set_my_state_do 246 #define set_his_want_state_do set_my_want_state_will 247 #define set_his_want_state_will set_my_want_state_do 248 249 #define set_his_state_dont set_my_state_wont 250 #define set_his_state_wont set_my_state_dont 251 #define set_his_want_state_dont set_my_want_state_wont 252 #define set_his_want_state_wont set_my_want_state_dont 253 254 #define his_will_wont_is_changing my_do_dont_is_changing 255 #define his_do_dont_is_changing my_will_wont_is_changing 256