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. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * @(#)defs.h 8.1 (Berkeley) 6/4/93 34 * $FreeBSD: src/crypto/telnet/telnetd/defs.h,v 1.1.1.1.8.1 2002/04/13 10:59:08 markm Exp $ 35 * $DragonFly: src/crypto/telnet/telnetd/defs.h,v 1.2 2003/06/17 04:24:37 dillon Exp $ 36 */ 37 38 /* 39 * Telnet server defines 40 */ 41 #include <sys/types.h> 42 #include <sys/param.h> 43 44 #ifndef BSD 45 # define BSD 43 46 #endif 47 48 #if defined(PRINTOPTIONS) && defined(DIAGNOSTICS) 49 #define TELOPTS 50 #define TELCMDS 51 #define SLC_NAMES 52 #endif 53 54 #if defined(SYSV_TERMIO) && !defined(USE_TERMIO) 55 # define USE_TERMIO 56 #endif 57 58 #include <sys/socket.h> 59 #include <sys/wait.h> 60 #include <fcntl.h> 61 #include <sys/file.h> 62 #include <sys/stat.h> 63 #include <sys/time.h> 64 #ifndef FILIO_H 65 #include <sys/ioctl.h> 66 #else 67 #include <sys/filio.h> 68 #endif 69 70 #include <netinet/in.h> 71 72 #include <arpa/telnet.h> 73 74 #include <stdio.h> 75 #ifdef __STDC__ 76 #include <stdlib.h> 77 #endif 78 #include <signal.h> 79 #include <errno.h> 80 #include <netdb.h> 81 #include <syslog.h> 82 #ifndef LOG_DAEMON 83 #define LOG_DAEMON 0 84 #endif 85 #ifndef LOG_ODELAY 86 #define LOG_ODELAY 0 87 #endif 88 #include <ctype.h> 89 #ifndef NO_STRING_H 90 #include <string.h> 91 #else 92 #include <strings.h> 93 #endif 94 95 #ifndef USE_TERMIO 96 #include <sgtty.h> 97 #else 98 # ifdef SYSV_TERMIO 99 # include <termio.h> 100 # else 101 # include <termios.h> 102 # endif 103 #endif 104 #if !defined(USE_TERMIO) || defined(NO_CC_T) 105 typedef unsigned char cc_t; 106 #endif 107 108 #ifdef __STDC__ 109 #include <unistd.h> 110 #endif 111 112 #ifndef _POSIX_VDISABLE 113 # ifdef VDISABLE 114 # define _POSIX_VDISABLE VDISABLE 115 # else 116 # define _POSIX_VDISABLE ((unsigned char)'\377') 117 # endif 118 #endif 119 120 #if !defined(TIOCSCTTY) && defined(TCSETCTTY) 121 # define TIOCSCTTY TCSETCTTY 122 #endif 123 124 #ifndef FD_SET 125 #ifndef HAVE_fd_set 126 typedef struct fd_set { int fds_bits[1]; } fd_set; 127 #endif 128 129 #define FD_SET(n, p) ((p)->fds_bits[0] |= (1<<(n))) 130 #define FD_CLR(n, p) ((p)->fds_bits[0] &= ~(1<<(n))) 131 #define FD_ISSET(n, p) ((p)->fds_bits[0] & (1<<(n))) 132 #define FD_ZERO(p) ((p)->fds_bits[0] = 0) 133 #endif /* FD_SET */ 134 135 /* 136 * I/O data buffers defines 137 */ 138 #define NETSLOP 64 139 140 #define NIACCUM(c) { *netip++ = c; \ 141 ncc++; \ 142 } 143 144 /* clock manipulations */ 145 #define settimer(x) (clocks.x = ++clocks.system) 146 #define sequenceIs(x,y) (clocks.x < clocks.y) 147 148 /* 149 * Linemode support states, in decreasing order of importance 150 */ 151 #define REAL_LINEMODE 0x04 152 #define KLUDGE_OK 0x03 153 #define NO_AUTOKLUDGE 0x02 154 #define KLUDGE_LINEMODE 0x01 155 #define NO_LINEMODE 0x00 156 157 /* 158 * Structures of information for each special character function. 159 */ 160 typedef struct { 161 unsigned char flag; /* the flags for this function */ 162 cc_t val; /* the value of the special character */ 163 } slcent, *Slcent; 164 165 typedef struct { 166 slcent defset; /* the default settings */ 167 slcent current; /* the current settings */ 168 cc_t *sptr; /* a pointer to the char in */ 169 /* system data structures */ 170 } slcfun, *Slcfun; 171 172 #ifdef DIAGNOSTICS 173 /* 174 * Diagnostics capabilities 175 */ 176 #define TD_REPORT 0x01 /* Report operations to client */ 177 #define TD_EXERCISE 0x02 /* Exercise client's implementation */ 178 #define TD_NETDATA 0x04 /* Display received data stream */ 179 #define TD_PTYDATA 0x08 /* Display data passed to pty */ 180 #define TD_OPTIONS 0x10 /* Report just telnet options */ 181 #endif /* DIAGNOSTICS */ 182 183 /* 184 * We keep track of each side of the option negotiation. 185 */ 186 187 #define MY_STATE_WILL 0x01 188 #define MY_WANT_STATE_WILL 0x02 189 #define MY_STATE_DO 0x04 190 #define MY_WANT_STATE_DO 0x08 191 192 /* 193 * Macros to check the current state of things 194 */ 195 196 #define my_state_is_do(opt) (options[opt]&MY_STATE_DO) 197 #define my_state_is_will(opt) (options[opt]&MY_STATE_WILL) 198 #define my_want_state_is_do(opt) (options[opt]&MY_WANT_STATE_DO) 199 #define my_want_state_is_will(opt) (options[opt]&MY_WANT_STATE_WILL) 200 201 #define my_state_is_dont(opt) (!my_state_is_do(opt)) 202 #define my_state_is_wont(opt) (!my_state_is_will(opt)) 203 #define my_want_state_is_dont(opt) (!my_want_state_is_do(opt)) 204 #define my_want_state_is_wont(opt) (!my_want_state_is_will(opt)) 205 206 #define set_my_state_do(opt) (options[opt] |= MY_STATE_DO) 207 #define set_my_state_will(opt) (options[opt] |= MY_STATE_WILL) 208 #define set_my_want_state_do(opt) (options[opt] |= MY_WANT_STATE_DO) 209 #define set_my_want_state_will(opt) (options[opt] |= MY_WANT_STATE_WILL) 210 211 #define set_my_state_dont(opt) (options[opt] &= ~MY_STATE_DO) 212 #define set_my_state_wont(opt) (options[opt] &= ~MY_STATE_WILL) 213 #define set_my_want_state_dont(opt) (options[opt] &= ~MY_WANT_STATE_DO) 214 #define set_my_want_state_wont(opt) (options[opt] &= ~MY_WANT_STATE_WILL) 215 216 /* 217 * Tricky code here. What we want to know is if the MY_STATE_WILL 218 * and MY_WANT_STATE_WILL bits have the same value. Since the two 219 * bits are adjacent, a little arithmatic will show that by adding 220 * in the lower bit, the upper bit will be set if the two bits were 221 * different, and clear if they were the same. 222 */ 223 #define my_will_wont_is_changing(opt) \ 224 ((options[opt]+MY_STATE_WILL) & MY_WANT_STATE_WILL) 225 226 #define my_do_dont_is_changing(opt) \ 227 ((options[opt]+MY_STATE_DO) & MY_WANT_STATE_DO) 228 229 /* 230 * Make everything symetrical 231 */ 232 233 #define HIS_STATE_WILL MY_STATE_DO 234 #define HIS_WANT_STATE_WILL MY_WANT_STATE_DO 235 #define HIS_STATE_DO MY_STATE_WILL 236 #define HIS_WANT_STATE_DO MY_WANT_STATE_WILL 237 238 #define his_state_is_do my_state_is_will 239 #define his_state_is_will my_state_is_do 240 #define his_want_state_is_do my_want_state_is_will 241 #define his_want_state_is_will my_want_state_is_do 242 243 #define his_state_is_dont my_state_is_wont 244 #define his_state_is_wont my_state_is_dont 245 #define his_want_state_is_dont my_want_state_is_wont 246 #define his_want_state_is_wont my_want_state_is_dont 247 248 #define set_his_state_do set_my_state_will 249 #define set_his_state_will set_my_state_do 250 #define set_his_want_state_do set_my_want_state_will 251 #define set_his_want_state_will set_my_want_state_do 252 253 #define set_his_state_dont set_my_state_wont 254 #define set_his_state_wont set_my_state_dont 255 #define set_his_want_state_dont set_my_want_state_wont 256 #define set_his_want_state_wont set_my_want_state_dont 257 258 #define his_will_wont_is_changing my_do_dont_is_changing 259 #define his_do_dont_is_changing my_will_wont_is_changing 260