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defs.h revision 1.1
      1 /*
      2  * Copyright (c) 1989 The Regents of the University of California.
      3  * 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	5.10 (Berkeley) 3/1/91
     34  */
     35 
     36 /*
     37  * Telnet server defines
     38  */
     39 #include <sys/types.h>
     40 #include <sys/param.h>
     41 
     42 #ifndef	BSD
     43 # define	BSD 43
     44 #endif
     45 
     46 #if	defined(CRAY) && !defined(LINEMODE)
     47 # define SYSV_TERMIO
     48 # define LINEMODE
     49 # define KLUDGELINEMODE
     50 # define DIAGNOSTICS
     51 # if defined(UNICOS50) && !defined(UNICOS5)
     52 #  define UNICOS5
     53 # endif
     54 # if !defined(UNICOS5)
     55 #  define BFTPDAEMON
     56 #  define HAS_IP_TOS
     57 # endif
     58 #endif /* CRAY */
     59 #if defined(UNICOS5) && !defined(NO_SETSID)
     60 # define NO_SETSID
     61 #endif
     62 
     63 #if defined(PRINTOPTIONS) && defined(DIAGNOSTICS)
     64 #define TELOPTS
     65 #define TELCMDS
     66 #define	SLC_NAMES
     67 #endif
     68 
     69 #if	defined(SYSV_TERMIO) && !defined(USE_TERMIO)
     70 # define	USE_TERMIO
     71 #endif
     72 
     73 #include <sys/socket.h>
     74 #ifndef	CRAY
     75 #include <sys/wait.h>
     76 #endif	/* CRAY */
     77 #include <fcntl.h>
     78 #include <sys/file.h>
     79 #include <sys/stat.h>
     80 #include <sys/time.h>
     81 #ifndef	FILIO_H
     82 #include <sys/ioctl.h>
     83 #else
     84 #include <sys/filio.h>
     85 #endif
     86 
     87 #include <netinet/in.h>
     88 
     89 #include <arpa/telnet.h>
     90 
     91 #include <stdio.h>
     92 #ifdef	__STDC__
     93 #include <stdlib.h>
     94 #endif
     95 #include <signal.h>
     96 #include <errno.h>
     97 #include <netdb.h>
     98 #include <syslog.h>
     99 #ifndef	LOG_DAEMON
    100 #define	LOG_DAEMON	0
    101 #endif
    102 #ifndef	LOG_ODELAY
    103 #define	LOG_ODELAY	0
    104 #endif
    105 #include <ctype.h>
    106 #ifndef NO_STRING_H
    107 #include <string.h>
    108 #else
    109 #include <strings.h>
    110 #endif
    111 
    112 #ifndef	USE_TERMIO
    113 #include <sgtty.h>
    114 #else
    115 # ifdef	SYSV_TERMIO
    116 # include <termio.h>
    117 # else
    118 # include <termios.h>
    119 # endif
    120 #endif
    121 #if !defined(USE_TERMIO) || defined(NO_CC_T)
    122 typedef unsigned char cc_t;
    123 #endif
    124 
    125 #ifdef	__STDC__
    126 #include <unistd.h>
    127 #endif
    128 
    129 #ifndef _POSIX_VDISABLE
    130 # ifdef VDISABLE
    131 #  define _POSIX_VDISABLE VDISABLE
    132 # else
    133 #  define _POSIX_VDISABLE ((unsigned char)'\377')
    134 # endif
    135 #endif
    136 
    137 
    138 #ifdef	CRAY
    139 # ifdef	CRAY1
    140 # include <sys/pty.h>
    141 #  ifndef FD_ZERO
    142 # include <sys/select.h>
    143 #  endif /* FD_ZERO */
    144 # endif	/* CRAY1 */
    145 
    146 #include <memory.h>
    147 #endif	/* CRAY */
    148 
    149 #if	!defined(TIOCSCTTY) && defined(TCSETCTTY)
    150 # define	TIOCSCTTY TCSETCTTY
    151 #endif
    152 
    153 #ifndef	FD_SET
    154 #ifndef	HAVE_fd_set
    155 typedef struct fd_set { int fds_bits[1]; } fd_set;
    156 #endif
    157 
    158 #define	FD_SET(n, p)	((p)->fds_bits[0] |= (1<<(n)))
    159 #define	FD_CLR(n, p)	((p)->fds_bits[0] &= ~(1<<(n)))
    160 #define	FD_ISSET(n, p)	((p)->fds_bits[0] & (1<<(n)))
    161 #define FD_ZERO(p)	((p)->fds_bits[0] = 0)
    162 #endif	/* FD_SET */
    163 
    164 /*
    165  * I/O data buffers defines
    166  */
    167 #define	NETSLOP	64
    168 #ifdef CRAY
    169 #undef BUFSIZ
    170 #define BUFSIZ  2048
    171 #endif
    172 
    173 #define	NIACCUM(c)	{   *netip++ = c; \
    174 			    ncc++; \
    175 			}
    176 
    177 /* clock manipulations */
    178 #define	settimer(x)	(clocks.x = ++clocks.system)
    179 #define	sequenceIs(x,y)	(clocks.x < clocks.y)
    180 
    181 /*
    182  * Linemode support states, in decreasing order of importance
    183  */
    184 #define REAL_LINEMODE	0x02
    185 #define KLUDGE_LINEMODE	0x01
    186 #define NO_LINEMODE	0x00
    187 
    188 /*
    189  * Structures of information for each special character function.
    190  */
    191 typedef struct {
    192 	unsigned char	flag;		/* the flags for this function */
    193 	cc_t		val;		/* the value of the special character */
    194 } slcent, *Slcent;
    195 
    196 typedef struct {
    197 	slcent		defset;		/* the default settings */
    198 	slcent		current;	/* the current settings */
    199 	cc_t		*sptr;		/* a pointer to the char in */
    200 					/* system data structures */
    201 } slcfun, *Slcfun;
    202 
    203 #ifdef DIAGNOSTICS
    204 /*
    205  * Diagnostics capabilities
    206  */
    207 #define	TD_REPORT	0x01	/* Report operations to client */
    208 #define TD_EXERCISE	0x02	/* Exercise client's implementation */
    209 #define TD_NETDATA	0x04	/* Display received data stream */
    210 #define TD_PTYDATA	0x08	/* Display data passed to pty */
    211 #define	TD_OPTIONS	0x10	/* Report just telnet options */
    212 #endif /* DIAGNOSTICS */
    213 
    214 /*
    215  * We keep track of each side of the option negotiation.
    216  */
    217 
    218 #define	MY_STATE_WILL		0x01
    219 #define	MY_WANT_STATE_WILL	0x02
    220 #define	MY_STATE_DO		0x04
    221 #define	MY_WANT_STATE_DO	0x08
    222 
    223 /*
    224  * Macros to check the current state of things
    225  */
    226 
    227 #define	my_state_is_do(opt)		(options[opt]&MY_STATE_DO)
    228 #define	my_state_is_will(opt)		(options[opt]&MY_STATE_WILL)
    229 #define my_want_state_is_do(opt)	(options[opt]&MY_WANT_STATE_DO)
    230 #define my_want_state_is_will(opt)	(options[opt]&MY_WANT_STATE_WILL)
    231 
    232 #define	my_state_is_dont(opt)		(!my_state_is_do(opt))
    233 #define	my_state_is_wont(opt)		(!my_state_is_will(opt))
    234 #define my_want_state_is_dont(opt)	(!my_want_state_is_do(opt))
    235 #define my_want_state_is_wont(opt)	(!my_want_state_is_will(opt))
    236 
    237 #define	set_my_state_do(opt)		(options[opt] |= MY_STATE_DO)
    238 #define	set_my_state_will(opt)		(options[opt] |= MY_STATE_WILL)
    239 #define	set_my_want_state_do(opt)	(options[opt] |= MY_WANT_STATE_DO)
    240 #define	set_my_want_state_will(opt)	(options[opt] |= MY_WANT_STATE_WILL)
    241 
    242 #define	set_my_state_dont(opt)		(options[opt] &= ~MY_STATE_DO)
    243 #define	set_my_state_wont(opt)		(options[opt] &= ~MY_STATE_WILL)
    244 #define	set_my_want_state_dont(opt)	(options[opt] &= ~MY_WANT_STATE_DO)
    245 #define	set_my_want_state_wont(opt)	(options[opt] &= ~MY_WANT_STATE_WILL)
    246 
    247 /*
    248  * Tricky code here.  What we want to know is if the MY_STATE_WILL
    249  * and MY_WANT_STATE_WILL bits have the same value.  Since the two
    250  * bits are adjacent, a little arithmatic will show that by adding
    251  * in the lower bit, the upper bit will be set if the two bits were
    252  * different, and clear if they were the same.
    253  */
    254 #define my_will_wont_is_changing(opt) \
    255 			((options[opt]+MY_STATE_WILL) & MY_WANT_STATE_WILL)
    256 
    257 #define my_do_dont_is_changing(opt) \
    258 			((options[opt]+MY_STATE_DO) & MY_WANT_STATE_DO)
    259 
    260 /*
    261  * Make everything symetrical
    262  */
    263 
    264 #define	HIS_STATE_WILL			MY_STATE_DO
    265 #define	HIS_WANT_STATE_WILL		MY_WANT_STATE_DO
    266 #define HIS_STATE_DO			MY_STATE_WILL
    267 #define HIS_WANT_STATE_DO		MY_WANT_STATE_WILL
    268 
    269 #define	his_state_is_do			my_state_is_will
    270 #define	his_state_is_will		my_state_is_do
    271 #define his_want_state_is_do		my_want_state_is_will
    272 #define his_want_state_is_will		my_want_state_is_do
    273 
    274 #define	his_state_is_dont		my_state_is_wont
    275 #define	his_state_is_wont		my_state_is_dont
    276 #define his_want_state_is_dont		my_want_state_is_wont
    277 #define his_want_state_is_wont		my_want_state_is_dont
    278 
    279 #define	set_his_state_do		set_my_state_will
    280 #define	set_his_state_will		set_my_state_do
    281 #define	set_his_want_state_do		set_my_want_state_will
    282 #define	set_his_want_state_will		set_my_want_state_do
    283 
    284 #define	set_his_state_dont		set_my_state_wont
    285 #define	set_his_state_wont		set_my_state_dont
    286 #define	set_his_want_state_dont		set_my_want_state_wont
    287 #define	set_his_want_state_wont		set_my_want_state_dont
    288 
    289 #define his_will_wont_is_changing	my_do_dont_is_changing
    290 #define his_do_dont_is_changing		my_will_wont_is_changing
    291