c737fde5da
Some time ago I got some reports MPSAFE TTY broke telnetd(8). Even
though it turned out to be a different problem within the TTY code, I
spotted a small issue with telnetd(8). Instead of allocating PTY's using
openpty(3) or posix_openpt(2), it used its own PTY allocation routine.
This means that telnetd(8) still uses /dev/ptyXX-style devices.
I've also increased the size of line[]. Even though 16 should be enough,
we already use 13 bytes ("/dev/pts/999", including '\0'). 32 bytes gives
us a little more freedom.
Also enable -DSTREAMSPTY. Otherwise telnetd(8) strips the PTY's pathname
to the latest slash instead of just removing "/dev/" (e.g. /dev/pts/0 ->
0, instead of pts/0).
Reviewed by: rink
219 lines
6.2 KiB
C
219 lines
6.2 KiB
C
/*
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* Copyright (c) 1989, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)ext.h 8.2 (Berkeley) 12/15/93
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* $FreeBSD$
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*/
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/*
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* Telnet server variable declarations
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*/
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extern char options[256];
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extern char do_dont_resp[256];
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extern char will_wont_resp[256];
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extern int linemode; /* linemode on/off */
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#ifdef LINEMODE
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extern int uselinemode; /* what linemode to use (on/off) */
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extern int editmode; /* edit modes in use */
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extern int useeditmode; /* edit modes to use */
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extern int alwayslinemode; /* command line option */
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extern int lmodetype; /* Client support for linemode */
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#endif /* LINEMODE */
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extern int flowmode; /* current flow control state */
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extern int restartany; /* restart output on any character state */
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#ifdef DIAGNOSTICS
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extern int diagnostic; /* telnet diagnostic capabilities */
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#endif /* DIAGNOSTICS */
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#ifdef BFTPDAEMON
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extern int bftpd; /* behave as bftp daemon */
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#endif /* BFTPDAEMON */
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#ifdef AUTHENTICATION
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extern int auth_level;
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#endif
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extern slcfun slctab[NSLC + 1]; /* slc mapping table */
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char *terminaltype;
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/*
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* I/O data buffers, pointers, and counters.
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*/
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extern char ptyobuf[BUFSIZ+NETSLOP], *pfrontp, *pbackp;
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extern char netibuf[BUFSIZ], *netip;
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extern char netobuf[BUFSIZ], *nfrontp, *nbackp;
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extern char *neturg; /* one past last bye of urgent data */
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extern int pcc, ncc;
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extern int pty, net;
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extern char line[32];
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extern int SYNCHing; /* we are in TELNET SYNCH mode */
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extern void
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_termstat(void),
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add_slc(char, char, cc_t),
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check_slc(void),
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change_slc(char, char, cc_t),
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cleanup(int),
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clientstat(int, int, int),
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copy_termbuf(char *, size_t),
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deferslc(void),
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defer_terminit(void),
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do_opt_slc(unsigned char *, int),
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doeof(void),
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dooption(int),
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dontoption(int),
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edithost(char *, char *),
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fatal(int, const char *),
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fatalperror(int, const char *),
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get_slc_defaults(void),
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init_env(void),
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init_termbuf(void),
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interrupt(void),
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localstat(void),
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flowstat(void),
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netclear(void),
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netflush(void),
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#ifdef DIAGNOSTICS
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printoption(const char *, int),
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printdata(const char *, char *, int),
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printsub(char, unsigned char *, int),
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#endif
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process_slc(unsigned char, unsigned char, cc_t),
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ptyflush(void),
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putchr(int),
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putf(char *, char *),
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recv_ayt(void),
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send_do(int, int),
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send_dont(int, int),
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send_slc(void),
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send_status(void),
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send_will(int, int),
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send_wont(int, int),
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sendbrk(void),
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sendsusp(void),
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set_termbuf(void),
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start_login(char *, int, char *),
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start_slc(int),
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#ifdef AUTHENTICATION
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start_slave(char *),
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#else
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start_slave(char *, int, char *),
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#endif
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suboption(void),
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telrcv(void),
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ttloop(void),
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tty_binaryin(int),
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tty_binaryout(int);
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extern int
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end_slc(unsigned char **),
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getnpty(void),
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#ifndef convex
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getpty(int *),
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#endif
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login_tty(int),
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spcset(int, cc_t *, cc_t **),
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stilloob(int),
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terminit(void),
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termstat(void),
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tty_flowmode(void),
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tty_restartany(void),
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tty_isbinaryin(void),
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tty_isbinaryout(void),
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tty_iscrnl(void),
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tty_isecho(void),
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tty_isediting(void),
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tty_islitecho(void),
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tty_isnewmap(void),
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tty_israw(void),
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tty_issofttab(void),
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tty_istrapsig(void),
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tty_linemode(void);
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extern void
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tty_rspeed(int),
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tty_setecho(int),
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tty_setedit(int),
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tty_setlinemode(int),
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tty_setlitecho(int),
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tty_setsig(int),
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tty_setsofttab(int),
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tty_tspeed(int),
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willoption(int),
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wontoption(int);
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int output_data(const char *, ...) __printflike(1, 2);
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void output_datalen(const char *, int);
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void startslave(char *, int, char *);
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#ifdef ENCRYPTION
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extern void (*encrypt_output)(unsigned char *, int);
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extern int (*decrypt_input)(int);
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extern char *nclearto;
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#endif /* ENCRYPTION */
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/*
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* The following are some clocks used to decide how to interpret
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* the relationship between various variables.
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*/
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extern struct {
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int
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system, /* what the current time is */
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echotoggle, /* last time user entered echo character */
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modenegotiated, /* last time operating mode negotiated */
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didnetreceive, /* last time we read data from network */
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ttypesubopt, /* ttype subopt is received */
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tspeedsubopt, /* tspeed subopt is received */
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environsubopt, /* environ subopt is received */
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oenvironsubopt, /* old environ subopt is received */
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xdisplocsubopt, /* xdisploc subopt is received */
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baseline, /* time started to do timed action */
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gotDM; /* when did we last see a data mark */
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} clocks;
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#ifndef DEFAULT_IM
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# ifdef ultrix
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# define DEFAULT_IM "\r\n\r\nULTRIX (%h) (%t)\r\n\r\r\n\r"
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# else
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# ifdef __FreeBSD__
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# define DEFAULT_IM "\r\n\r\nFreeBSD (%h) (%t)\r\n\r\r\n\r"
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# else
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# define DEFAULT_IM "\r\n\r\n4.4 BSD UNIX (%h) (%t)\r\n\r\r\n\r"
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# endif
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# endif
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#endif
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