4.2BSD/usr/src/ucb/tset/tset.c
#ifndef lint
static char sccsid[] = "@(#)tset.c 1.6 (Berkeley) 8/11/83";
#endif
/*
** TSET -- set terminal modes
**
** This program does sophisticated terminal initialization.
** I recommend that you include it in your .start_up or .login
** file to initialize whatever terminal you are on.
**
** There are several features:
**
** A special file or sequence (as controlled by the ttycap file)
** is sent to the terminal.
**
** Mode bits are set on a per-terminal_type basis (much better
** than UNIX itself). This allows special delays, automatic
** tabs, etc.
**
** Erase and Kill characters can be set to whatever you want.
** Default is to change erase to control-H on a terminal which
** can overstrike, and leave it alone on anything else. Kill
** is always left alone unless specifically requested. These
** characters can be represented as "^X" meaning control-X;
** X is any character.
**
** Terminals which are dialups or plugboard types can be aliased
** to whatever type you may have in your home or office. Thus,
** if you know that when you dial up you will always be on a
** TI 733, you can specify that fact to tset. You can represent
** a type as "?type". This will ask you what type you want it
** to be -- if you reply with just a newline, it will default
** to the type given.
**
** The htmp file, used by ex, etc., can be updated.
**
** The current terminal type can be queried.
**
** Usage:
** tset [-] [-EC] [-eC] [-kC] [-s] [-h] [-u] [-r]
** [-m [ident] [test baudrate] :type]
** [-Q] [-I] [-S] [type]
**
** In systems with environments, use:
** eval `tset -s ...`
** Actually, this doesn't work in old csh's.
** Instead, use:
** tset -s ... > tset.tmp
** source tset.tmp
** rm tset.tmp
** or:
** set noglob
** set term=(`tset -S ....`)
** setenv TERM $term[1]
** setenv TERMCAP "$term[2]"
** unset term
** unset noglob
**
** Positional Parameters:
** type -- the terminal type to force. If this is
** specified, initialization is for this
** terminal type.
**
** Flags:
** - -- report terminal type. Whatever type is
** decided on is reported. If no other flags
** are stated, the only affect is to write
** the terminal type on the standard output.
** -r -- report to user in addition to other flags.
** -EC -- set the erase character to C on all terminals
** except those which cannot backspace (e.g.,
** a TTY 33). C defaults to control-H.
** -eC -- set the erase character to C on all terminals.
** C defaults to control-H. If neither -E or -e
** are specified, the erase character is set to
** control-H if the terminal can both backspace
** and not overstrike (e.g., a CRT). If the erase
** character is NULL (zero byte), it will be reset
** to '#' if nothing else is specified.
** -kC -- set the kill character to C on all terminals.
** Default for C is control-X. If not specified,
** the kill character is untouched; however, if
** not specified and the kill character is NULL
** (zero byte), the kill character is set to '@'.
** -iC -- reserved for setable interrupt character.
** -qC -- reserved for setable quit character.
** -m -- map the system identified type to some user
** specified type. The mapping can be baud rate
** dependent. This replaces the old -d, -p flags.
** (-d type -> -m dialup:type)
** (-p type -> -m plug:type)
** Syntax: -m identifier [test baudrate] :type
** where: ``identifier'' is whatever is found in
** /etc/ttytype for this port, (abscence of an identifier
** matches any identifier); ``test'' may be any combination
** of > = < ! @; ``baudrate'' is as with stty(1);
** ``type'' is the actual terminal type to use if the
** mapping condition is met. Multiple maps are scanned
** in order and the first match prevails.
** -n -- If the new tty driver from UCB is available, this flag
** will activate the new options for erase and kill
** processing. This will be different for printers
** and crt's. For crts, if the baud rate is < 1200 then
** erase and kill don't remove characters from the screen.
** -h -- don't read htmp file. Normally the terminal type
** is determined by reading the htmp file or the
** environment (unless some mapping is specified).
** This forces a read of the ttytype file -- useful
** when htmp is somehow wrong. (V6 only)
** -u -- don't update htmp. It seemed like this should
** be put in. Note that htmp is never actually
** written if there are no changes, so don't bother
** bother using this for efficiency reasons alone.
** -s -- output setenv commands for TERM. This can be
** used with
** `tset -s ...`
** and is to be prefered to:
** setenv TERM `tset - ...`
** because -s sets the TERMCAP variable also.
** -S -- Similar to -s but outputs 2 strings suitable for
** use in csh .login files as follows:
** set noglob
** set term=(`tset -S .....`)
** setenv TERM $term[1]
** setenv TERMCAP "$term[2]"
** unset term
** unset noglob
** -Q -- be quiet. don't output 'Erase set to' etc.
** -I -- don't do terminal initialization (is & if
** strings).
** -v -- On virtual terminal systems, don't set up a
** virtual terminal. Otherwise tset will tell
** the operating system what kind of terminal you
** are on (if it is a known terminal) and fix up
** the output of -s to use virtual terminal sequences.
**
** Files:
** /etc/ttytype
** contains a terminal id -> terminal type
** mapping; used when any user mapping is specified,
** or the environment doesn't have TERM set.
** /etc/termcap
** a terminal_type -> terminal_capabilities
** mapping.
**
** Return Codes:
** -1 -- couldn't open ttycap.
** 1 -- bad terminal type, or standard output not tty.
** 0 -- ok.
**
** Defined Constants:
** DIALUP -- the type code for a dialup port.
** PLUGBOARD -- the type code for a plugboard port.
** ARPANET -- the type code for an arpanet port.
** BACKSPACE -- control-H, the default for -e.
** CTRL('X') -- control-X, the default for -k.
** OLDERASE -- the system default erase character.
** OLDKILL -- the system default kill character.
** FILEDES -- the file descriptor to do the operation
** on, nominally 1 or 2.
** STDOUT -- the standard output file descriptor.
** UIDMASK -- the bit pattern to mask with the getuid()
** call to get just the user id.
** GTTYN -- defines file containing generalized ttynames
** and compiles code to look there.
**
** Requires:
** Routines to handle htmp, ttytype, and ttycap.
**
** Compilation Flags:
** OLDFLAGS -- must be defined to compile code for any of
** the -d, -p, or -a flags.
** OLDDIALUP -- accept the -d flag.
** OLDPLUGBOARD -- accept the -p flag.
** OLDARPANET -- accept the -a flag.
** FULLLOGIN -- if defined, login sets the ttytype from
** /etc/ttytype file.
** V6 -- if clear, use environments, not htmp.
** also use TIOCSETN rather than stty to avoid flushing
** GTTYN -- if set, compiles code to look at /etc/ttytype.
** UCB_NTTY -- set to handle new tty driver modes.
**
** Trace Flags:
** none
**
** Diagnostics:
** Bad flag
** An incorrect option was specified.
** Too few args
** more command line arguments are required.
** Unexpected arg
** wrong type of argument was encountered.
** Cannot open ...
** The specified file could not be openned.
** Type ... unknown
** An unknown terminal type was specified.
** Cannot update htmp
** Cannot update htmp file when the standard
** output is not a terminal.
** Erase set to ...
** Telling that the erase character has been
** set to the specified character.
** Kill set to ...
** Ditto for kill
** Erase is ... Kill is ...
** Tells that the erase/kill characters were
** wierd before, but they are being left as-is.
** Not a terminal
** Set if FILEDES is not a terminal.
**
** Compilation Instructions:
** cc -n -O tset.c -ltermlib
** mv a.out tset
** chown bin tset
** chmod 4755 tset
**
** where 'bin' should be whoever owns the 'htmp' file.
** If 'htmp' is 666, then tset need not be setuid.
**
** For version 6 the compile command should be:
** cc -n -O -I/usr/include/retrofit tset.c -ltermlib -lretro -lS
**
** Author:
** Eric Allman
** Electronics Research Labs
** U.C. Berkeley
**
** History:
** 1/81 -- Added alias checking for mapping identifiers.
** 9/80 -- Added UCB_NTTY mods to setup the new tty driver.
** Added the 'reset ...' invocation.
** 7/80 -- '-S' added. '-m' mapping added. TERMCAP string
** cleaned up.
** 3/80 -- Changed to use tputs. Prc & flush added.
** 10/79 -- '-s' option extended to handle TERMCAP
** variable, set noglob, quote the entry,
** and know about the Bourne shell. Terminal
** initialization moved to before any information
** output so screen clears would not screw you.
** '-Q' option added.
** 8/79 -- '-' option alone changed to only output
** type. '-s' option added. 'VERSION7'
** changed to 'V6' for compatibility.
** 12/78 -- modified for eventual migration to VAX/UNIX,
** so the '-' option is changed to output only
** the terminal type to STDOUT instead of
** FILEDES. FULLLOGIN flag added.
** 9/78 -- '-' and '-p' options added (now fully
** compatible with ttytype!), and spaces are
** permitted between the -d and the type.
** 8/78 -- The sense of -h and -u were reversed, and the
** -f flag is dropped -- same effect is available
** by just stating the terminal type.
** 10/77 -- Written.
*/
# ifdef USG
# define index strchr
# define rindex strrchr
# define curerase mode.c_cc[VERASE]
# define curkill mode.c_cc[VKILL]
# define olderase oldmode.c_cc[VERASE]
# define oldkill oldmode.c_cc[VKILL]
# else
# define curerase mode.sg_erase
# define curkill mode.sg_kill
# define olderase oldmode.sg_erase
# define oldkill oldmode.sg_kill
# endif
/*
# define FULLLOGIN 1
/*/
# ifndef V6
# define GTTYN "/etc/ttytype"
# endif
# ifndef USG
# include <sgtty.h>
# else
# include <termio.h>
# endif
# include <stdio.h>
# include <signal.h>
# ifdef V6
# include <retrofit.h>
# endif
# define YES 1
# define NO 0
#undef CTRL
# define CTRL(x) (x ^ 0100)
# define BACKSPACE (CTRL('H'))
# define CHK(val, dft) (val<=0 ? dft : val)
# define isdigit(c) (c >= '0' && c <= '9')
# define isalnum(c) (c > ' ' && !(index("<@=>!:|\177", c)) )
# define OLDERASE '#'
# define OLDKILL '@'
# define FILEDES 2 /* do gtty/stty on this descriptor */
# define STDOUT 1 /* output of -s/-S to this descriptor */
# ifdef V6
# define UIDMASK 0377
# else
# define UIDMASK -1
# endif
# ifdef UCB_NTTY
# define USAGE "usage: tset [-] [-nrsIQS] [-eC] [-kC] [-m [ident][test speed]:type] [type]\n"
# else
# define USAGE "usage: tset [-] [-rsIQS] [-eC] [-kC] [-m [ident][test speed]:type] [type]\n"
# endif
# define OLDFLAGS
# define DIALUP "dialup"
# define OLDDIALUP "sd"
# define PLUGBOARD "plugboard"
# define OLDPLUGBOARD "sp"
/***
# define ARPANET "arpanet"
# define OLDARPANET "sa"
/***/
# define DEFTYPE "unknown"
# ifdef GTTYN
# define NOTTY 0
# else
# define NOTTY 'x'
# endif
/*
* Baud Rate Conditionals
*/
# define ANY 0
# define GT 1
# define EQ 2
# define LT 4
# define GE (GT|EQ)
# define LE (LT|EQ)
# define NE (GT|LT)
# define ALL (GT|EQ|LT)
# define NMAP 10
struct map {
char *Ident;
char Test;
char Speed;
char *Type;
} map[NMAP];
struct map *Map = map;
/* This should be available in an include file */
struct
{
char *string;
int speed;
int baudrate;
} speeds[] = {
"0", B0, 0,
"50", B50, 50,
"75", B75, 75,
"110", B110, 110,
"134", B134, 134,
"134.5",B134, 134,
"150", B150, 150,
"200", B200, 200,
"300", B300, 300,
"600", B600, 600,
"1200", B1200, 1200,
"1800", B1800, 1800,
"2400", B2400, 2400,
"4800", B4800, 4800,
"9600", B9600, 9600,
"exta", EXTA, 19200,
"extb", EXTB, 38400,
0,
};
#ifdef CBVIRTTERM
struct vterm {
char cap[2];
char *value;
} vtab [] = {
"al", "\033\120",
"cd", "\033\114",
"ce", "\033\113",
"cm", "\033\107%r%.%.",
"cl", "\033\112",
"dc", "\033\115",
"dl", "\033\116",
"ic", "\033\117",
"kl", "\033\104",
"kr", "\033\103",
"ku", "\033\101",
"kd", "\033\102",
"kh", "\033\105",
"nd", "\033\103",
"se", "\033\142\004",
"so", "\033\141\004",
"ue", "\033\142\001",
"up", "\033\101",
"us", "\033\141\001",
"\0\0", NULL,
};
int VirTermNo = -2;
# endif CBVIRTTERM
char Erase_char; /* new erase character */
char Kill_char; /* new kill character */
char Specialerase; /* set => Erase_char only on terminals with backspace */
# ifdef GTTYN
char *Ttyid = NOTTY; /* terminal identifier */
# else
char Ttyid = NOTTY; /* terminal identifier */
# endif
char *TtyType; /* type of terminal */
char *DefType; /* default type if none other computed */
char *NewType; /* mapping identifier based on old flags */
int Mapped; /* mapping has been specified */
int Dash_u; /* don't update htmp */
int Dash_h; /* don't read htmp */
int DoSetenv; /* output setenv commands */
int BeQuiet; /* be quiet */
int NoInit; /* don't output initialization string */
int IsReset; /* invoked as reset */
int Report; /* report current type */
int Ureport; /* report to user */
int RepOnly; /* report only */
int CmndLine; /* output full command lines (-s option) */
int Ask; /* ask user for termtype */
int DoVirtTerm = YES; /* Set up a virtual terminal */
int New = NO; /* use new tty discipline */
int HasAM; /* True if terminal has automatic margins */
int PadBaud; /* Min rate of padding needed */
# define CAPBUFSIZ 1024
char Capbuf[CAPBUFSIZ]; /* line from /etc/termcap for this TtyType */
char *Ttycap; /* termcap line from termcap or environ */
char Aliasbuf[128];
char *Alias[16];
struct delay
{
int d_delay;
int d_bits;
};
# include "tset.delays.h"
# ifndef USG
struct sgttyb mode;
struct sgttyb oldmode;
# else
struct termio mode;
struct termio oldmode;
# endif
# ifdef CBVIRTTERM
struct termcb block = {0, 2, 0, 0, 0, 20};
# endif CBVIRTTERM
main(argc, argv)
int argc;
char *argv[];
{
char buf[256];
char termbuf[32];
auto char *bufp;
register char *p;
char *command;
register int i;
int j;
int Break;
int Not;
char *nextarg();
char *mapped();
extern char *rindex();
# ifdef V6
extern char *hsgettype();
# else
extern char *getenv();
# endif
# ifdef GTTYN
char *stypeof();
extern char *ttyname();
extern char *tgetstr();
# endif
char bs_char;
int csh;
int settle;
int setmode();
extern prc();
extern char PC;
# ifdef V6
extern int ospeed;
# else
extern short ospeed;
# endif
# ifdef UCB_NTTY
int lmode;
int ldisc;
ioctl(FILEDES, TIOCLGET, &lmode);
ioctl(FILEDES, TIOCGETD, &ldisc);
# endif
# ifndef USG
if (gtty(FILEDES, &mode) < 0)
# else
if (ioctl(FILEDES, TCGETA, &mode) < 0)
# endif
{
prs("Not a terminal\n");
exit(1);
}
bmove(&mode, &oldmode, sizeof mode);
# ifndef USG
ospeed = mode.sg_ospeed & 017;
# else
ospeed = mode.c_cflag & CBAUD;
# endif
signal(SIGINT, setmode);
signal(SIGQUIT, setmode);
signal(SIGTERM, setmode);
if (command = rindex(argv[0], '/'))
command++;
else
command = argv[0];
if (sequal(command, "reset") )
{
/*
* reset the teletype mode bits to a sensible state.
* Copied from the program by Kurt Shoens & Mark Horton.
* Very useful after crapping out in raw.
*/
# ifndef V6
# ifdef TIOCGETC
struct tchars tbuf;
# endif TIOCGETC
# ifdef UCB_NTTY
struct ltchars ltc;
if (ldisc == NTTYDISC)
{
ioctl(FILEDES, TIOCGLTC, <c);
ltc.t_suspc = CHK(ltc.t_suspc, CTRL('Z'));
ltc.t_dsuspc = CHK(ltc.t_dsuspc, CTRL('Y'));
ltc.t_rprntc = CHK(ltc.t_rprntc, CTRL('R'));
ltc.t_flushc = CHK(ltc.t_flushc, CTRL('O'));
ltc.t_werasc = CHK(ltc.t_werasc, CTRL('W'));
ltc.t_lnextc = CHK(ltc.t_lnextc, CTRL('V'));
ioctl(FILEDES, TIOCSLTC, <c);
}
# endif UCB_NTTY
# ifndef USG
# ifdef TIOCGETC
ioctl(FILEDES, TIOCGETC, &tbuf);
tbuf.t_intrc = CHK(tbuf.t_intrc, CTRL('?'));
tbuf.t_quitc = CHK(tbuf.t_quitc, CTRL('\\'));
tbuf.t_startc = CHK(tbuf.t_startc, CTRL('Q'));
tbuf.t_stopc = CHK(tbuf.t_stopc, CTRL('S'));
tbuf.t_eofc = CHK(tbuf.t_eofc, CTRL('D'));
/* brkc is left alone */
ioctl(FILEDES, TIOCSETC, &tbuf);
# endif TIOCGETC
mode.sg_flags &= ~(RAW
# ifdef CBREAK
|CBREAK
# endif CBREAK
|VTDELAY|ALLDELAY);
mode.sg_flags |= XTABS|ECHO|CRMOD|ANYP;
curerase = CHK(curerase, OLDERASE);
curkill = CHK(curkill, OLDKILL);
# else USG
ioctl(FILEDES, TCGETA, &mode);
curerase = CHK(curerase, OLDERASE);
curkill = CHK(curkill, OLDKILL);
mode.c_cc[VINTR] = CHK(mode.c_cc[VINTR], CTRL('?'));
mode.c_cc[VQUIT] = CHK(mode.c_cc[VQUIT], CTRL('\\'));
mode.c_cc[VEOF] = CHK(mode.c_cc[VEOF], CTRL('D'));
mode.c_iflag |= (BRKINT|ISTRIP|ICRNL|IXON);
mode.c_iflag &= ~(IGNBRK|PARMRK|INPCK|INLCR|IGNCR|IUCLC|IXOFF);
mode.c_oflag |= (OPOST|ONLCR);
mode.c_oflag &= ~(OLCUC|OCRNL|ONOCR|ONLRET|OFILL|OFDEL|
NLDLY|CRDLY|TABDLY|BSDLY|VTDLY|FFDLY);
mode.c_cflag |= (CS7|CREAD);
mode.c_cflag &= ~(CSIZE|PARODD|CLOCAL);
mode.c_lflag |= (ISIG|ICANON|ECHO|ECHOK);
mode.c_lflag &= ~(XCASE|ECHONL|NOFLSH);
ioctl(FILEDES, TCSETAW, &mode);
# endif USG
# endif V6
Dash_u = YES;
BeQuiet = YES;
IsReset = YES;
}
else if (argc == 2 && sequal(argv[1], "-"))
{
RepOnly = YES;
Dash_u = YES;
}
argc--;
/* scan argument list and collect flags */
while (--argc >= 0)
{
p = *++argv;
if (*p == '-')
{
if (*++p == NULL)
Report = YES; /* report current terminal type */
else while (*p) switch (*p++)
{
# ifdef UCB_NTTY
case 'n':
ldisc = NTTYDISC;
if (ioctl(FILEDES, TIOCSETD, &ldisc)<0)
fatal("ioctl ", "new");
continue;
# endif
case 'r': /* report to user */
Ureport = YES;
continue;
case 'E': /* special erase: operate on all but TTY33 */
Specialerase = YES;
/* explicit fall-through to -e case */
case 'e': /* erase character */
if (*p == NULL)
Erase_char = -1;
else
{
if (*p == '^' && p[1] != NULL)
Erase_char = CTRL(*++p);
else
Erase_char = *p;
p++;
}
continue;
case 'k': /* kill character */
if (*p == NULL)
Kill_char = CTRL('X');
else
{
if (*p == '^' && p[1] != NULL)
Kill_char = CTRL(*++p);
else
Kill_char = *p;
p++;
}
continue;
# ifdef OLDFLAGS
# ifdef OLDDIALUP
case 'd': /* dialup type */
NewType = DIALUP;
goto mapold;
# endif
# ifdef OLDPLUGBOARD
case 'p': /* plugboard type */
NewType = PLUGBOARD;
goto mapold;
# endif
# ifdef OLDARPANET
case 'a': /* arpanet type */
Newtype = ARPANET;
goto mapold;
# endif
mapold: Map->Ident = NewType;
Map->Test = ALL;
if (*p == NULL)
{
p = nextarg(argc--, argv++);
}
Map->Type = p;
Map++;
Mapped = YES;
p = "";
continue;
# endif
case 'm': /* map identifier to type */
/* This code is very loose. Almost no
** syntax checking is done!! However,
** illegal syntax will only produce
** weird results.
*/
if (*p == NULL)
{
p = nextarg(argc--, argv++);
}
if (isalnum(*p))
{
Map->Ident = p; /* identifier */
while (isalnum(*p)) p++;
}
else
Map->Ident = "";
Break = NO;
Not = NO;
while (!Break) switch (*p)
{
case NULL:
p = nextarg(argc--, argv++);
continue;
case ':': /* mapped type */
*p++ = NULL;
Break = YES;
continue;
case '>': /* conditional */
Map->Test |= GT;
*p++ = NULL;
continue;
case '<': /* conditional */
Map->Test |= LT;
*p++ = NULL;
continue;
case '=': /* conditional */
case '@':
Map->Test |= EQ;
*p++ = NULL;
continue;
case '!': /* invert conditions */
Not = ~Not;
*p++ = NULL;
continue;
case 'B': /* Baud rate */
p++;
/* intentional fallthru */
default:
if (isdigit(*p) || *p == 'e')
{
Map->Speed = baudrate(p);
while (isalnum(*p) || *p == '.')
p++;
}
else
Break = YES;
continue;
}
if (Not) /* invert sense of test */
{
Map->Test = (~(Map->Test))&ALL;
}
if (*p == NULL)
{
p = nextarg(argc--, argv++);
}
Map->Type = p;
p = "";
Map++;
Mapped = YES;
continue;
case 'h': /* don't get type from htmp or env */
Dash_h = YES;
continue;
case 'u': /* don't update htmp */
Dash_u = YES;
continue;
case 's': /* output setenv commands */
DoSetenv = YES;
CmndLine = YES;
continue;
case 'S': /* output setenv strings */
DoSetenv = YES;
CmndLine = NO;
continue;
case 'Q': /* be quiet */
BeQuiet = YES;
continue;
case 'I': /* no initialization */
NoInit = YES;
continue;
case 'A': /* Ask user */
Ask = YES;
continue;
case 'v': /* no virtual terminal */
DoVirtTerm = NO;
continue;
default:
*p-- = NULL;
fatal("Bad flag -", p);
}
}
else
{
/* terminal type */
DefType = p;
}
}
if (DefType)
{
if (Mapped)
{
Map->Ident = ""; /* means "map any type" */
Map->Test = ALL; /* at all baud rates */
Map->Type = DefType; /* to the default type */
}
else
TtyType = DefType;
}
# ifndef V6
/*
* Get rid of $TERMCAP, if it's there, so we get a real
* entry from /etc/termcap. This prevents us from being
* fooled by out of date stuff in the environment, and
* makes tabs work right on CB/Unix.
*/
bufp = getenv("TERMCAP");
if (bufp && *bufp != '/')
strcpy(bufp-8, "NOTHING"); /* overwrite only "TERMCAP" */
/* get current idea of terminal type from environment */
if (!Dash_h && !Mapped && TtyType == 0)
TtyType = getenv("TERM");
# endif
/* determine terminal id if needed */
# ifdef V6
if (Ttyid == NOTTY && (TtyType == 0 || !Dash_h || !Dash_u))
Ttyid = ttyn(FILEDES);
# else
if (!RepOnly && Ttyid == NOTTY && (TtyType == 0 || !Dash_h))
Ttyid = ttyname(FILEDES);
# endif
# ifdef V6
/* get htmp if ever used */
if (!Dash_u || (TtyType == 0 && !Dash_h))
{
/* get htmp entry -- if error or wrong user use ttytype */
if (Ttyid == NOTTY || hget(Ttyid) < 0 ||
hgettype() == 0 || hgetuid() != (getuid() & UIDMASK))
Dash_h++;
}
/* find terminal type (if not already known) */
if (TtyType == 0 && !Dash_h)
{
/* get type from /etc/htmp */
TtyType = hsgettype();
}
# endif
# ifdef GTTYN
/* If still undefined, look at /etc/ttytype */
if (TtyType == 0)
{
TtyType = stypeof(Ttyid);
}
# endif
/* If still undefined, use DEFTYPE */
if (TtyType == 0)
{
TtyType = DEFTYPE;
}
/* check for dialup or other mapping */
if (Mapped)
TtyType = mapped(TtyType);
/* TtyType now contains a pointer to the type of the terminal */
/* If the first character is '?', ask the user */
if (TtyType[0] == '?')
{
Ask = YES;
TtyType++;
if (TtyType[0] == '\0')
TtyType = DEFTYPE;
}
if (Ask)
{
prs("TERM = (");
prs(TtyType);
prs(") ");
flush();
/* read the terminal. If not empty, set type */
i = read(2, termbuf, sizeof termbuf - 1);
if (i > 0)
{
if (termbuf[i - 1] == '\n')
i--;
termbuf[i] = '\0';
if (termbuf[0] != '\0')
TtyType = termbuf;
}
}
/* get terminal capabilities */
if (!(Alias[0] && isalias(TtyType))) {
switch (tgetent(Capbuf, TtyType))
{
case -1:
prs("Cannot find termcap\n");
flush();
exit(-1);
case 0:
prs("Type ");
prs(TtyType);
prs(" unknown\n");
flush();
if (DoSetenv)
{
TtyType = DEFTYPE;
tgetent(Capbuf, TtyType);
}
else
exit(1);
}
}
Ttycap = Capbuf;
if (!RepOnly)
{
/* determine erase and kill characters */
if (Specialerase && !tgetflag("bs"))
Erase_char = 0;
bufp = buf;
p = tgetstr("kb", &bufp);
if (p == NULL || p[1] != '\0')
p = tgetstr("bc", &bufp);
if (p != NULL && p[1] == '\0')
bs_char = p[0];
else if (tgetflag("bs"))
bs_char = BACKSPACE;
else
bs_char = 0;
if (Erase_char == 0 && !tgetflag("os") && curerase == OLDERASE)
{
if (tgetflag("bs") || bs_char != 0)
Erase_char = -1;
}
if (Erase_char < 0)
Erase_char = (bs_char != 0) ? bs_char : BACKSPACE;
if (curerase == 0)
curerase = OLDERASE;
if (Erase_char != 0)
curerase = Erase_char;
if (curkill == 0)
curkill = OLDKILL;
if (Kill_char != 0)
curkill = Kill_char;
/* set modes */
PadBaud = tgetnum("pb"); /* OK if fails */
for (i=0; speeds[i].string; i++)
if (speeds[i].baudrate == PadBaud) {
PadBaud = speeds[i].speed;
break;
}
# ifndef USG
setdelay("dC", CRdelay, CRbits, &mode.sg_flags);
setdelay("dN", NLdelay, NLbits, &mode.sg_flags);
setdelay("dB", BSdelay, BSbits, &mode.sg_flags);
setdelay("dF", FFdelay, FFbits, &mode.sg_flags);
setdelay("dT", TBdelay, TBbits, &mode.sg_flags);
if (tgetflag("UC") || (command[0] & 0140) == 0100)
mode.sg_flags |= LCASE;
else if (tgetflag("LC"))
mode.sg_flags &= ~LCASE;
mode.sg_flags &= ~(EVENP | ODDP | RAW);
# ifdef CBREAK
mode.sg_flags &= ~CBREAK;
# endif
if (tgetflag("EP"))
mode.sg_flags |= EVENP;
if (tgetflag("OP"))
mode.sg_flags |= ODDP;
if ((mode.sg_flags & (EVENP | ODDP)) == 0)
mode.sg_flags |= EVENP | ODDP;
mode.sg_flags |= CRMOD | ECHO | XTABS;
if (tgetflag("NL")) /* new line, not line feed */
mode.sg_flags &= ~CRMOD;
if (tgetflag("HD")) /* half duplex */
mode.sg_flags &= ~ECHO;
if (tgetflag("pt")) /* print tabs */
mode.sg_flags &= ~XTABS;
# else
setdelay("dC", CRdelay, CRbits, &mode.c_oflag);
setdelay("dN", NLdelay, NLbits, &mode.c_oflag);
setdelay("dB", BSdelay, BSbits, &mode.c_oflag);
setdelay("dF", FFdelay, FFbits, &mode.c_oflag);
setdelay("dT", TBdelay, TBbits, &mode.c_oflag);
setdelay("dV", VTdelay, VTbits, &mode.c_oflag);
if (tgetflag("UC") || (command[0] & 0140) == 0100) {
mode.c_iflag |= IUCLC;
mode.c_oflag |= OLCUC;
}
else if (tgetflag("LC")) {
mode.c_iflag &= ~IUCLC;
mode.c_oflag &= ~OLCUC;
}
mode.c_iflag &= ~(PARMRK|INPCK);
mode.c_lflag |= ICANON;
if (tgetflag("EP")) {
mode.c_cflag |= PARENB;
mode.c_cflag &= ~PARODD;
}
if (tgetflag("OP")) {
mode.c_cflag |= PARENB;
mode.c_cflag |= PARODD;
}
mode.c_oflag |= ONLCR;
mode.c_iflag |= ICRNL;
mode.c_lflag |= ECHO;
mode.c_oflag |= TAB3;
if (tgetflag("NL")) { /* new line, not line feed */
mode.c_oflag &= ~ONLCR;
mode.c_iflag &= ~ICRNL;
}
if (tgetflag("HD")) /* half duplex */
mode.c_lflag &= ~ECHO;
if (tgetflag("pt")) /* print tabs */
mode.c_oflag &= ~TAB3;
mode.c_lflag |= (ECHOE|ECHOK);
# endif
# ifdef CBVIRTTERM
HasAM = tgetflag("am");
# endif CBVIRTTERM
# ifdef UCB_NTTY
if (ldisc == NTTYDISC)
{
lmode |= LCTLECH; /* display ctrl chars */
if (tgetflag("hc"))
{ /** set printer modes **/
lmode &= ~(LCRTBS|LCRTERA|LCRTKIL);
lmode |= LPRTERA;
}
else
{ /** set crt modes **/
if (!tgetflag("os"))
{
lmode &= ~LPRTERA;
lmode |= LCRTBS;
if (mode.sg_ospeed >= B1200)
lmode |= LCRTERA|LCRTKIL;
}
}
}
ioctl(FILEDES, TIOCLSET, &lmode);
# endif
/* get pad character */
bufp = buf;
if (tgetstr("pc", &bufp) != 0)
PC = buf[0];
/* output startup string */
if (!NoInit)
{
# ifndef USG
if (oldmode.sg_flags&(XTABS|CRMOD))
{
oldmode.sg_flags &= ~(XTABS|CRMOD);
setmode(-1);
}
# else
if (oldmode.c_oflag&(TAB3|ONLCR|OCRNL|ONLRET))
{
oldmode.c_oflag &= (TAB3|ONLCR|OCRNL|ONLRET);
setmode(-1);
}
# endif
# ifdef CBVIRTTERM
block.st_termt = 0;
ioctl(FILEDES, LDSETT, &block);
# endif CBVIRTTERM
if (settabs()) {
settle = YES;
flush();
}
bufp = buf;
if (tgetstr(IsReset? "rs" : "is", &bufp) != 0)
{
tputs(buf, 0, prc);
settle = YES;
flush();
}
bufp = buf;
if (tgetstr(IsReset? "rf" : "if", &bufp) != 0)
{
cat(buf);
settle = YES;
}
if (settle)
{
prc('\r');
flush();
sleep(1); /* let terminal settle down */
}
}
# ifdef CBVIRTTERM
if (DoVirtTerm) {
j = tgetnum("vt");
VirTermNo = -1;
for (i=0; vt_map[i].stdnum; i++)
if (vt_map[i].stdnum == j)
VirTermNo = vt_map[i].localnum;
} else
VirTermNo = -1;
# endif CBVIRTTERM
setmode(0); /* set new modes, if they've changed */
/* set up environment for the shell we are using */
/* (this code is rather heuristic, checking for $SHELL */
/* ending in the 3 characters "csh") */
csh = NO;
if (DoSetenv)
{
# ifndef V6
char *sh;
if ((sh = getenv("SHELL")) && (i = strlen(sh)) >= 3)
{
if ((csh = sequal(&sh[i-3], "csh")) && CmndLine)
write(STDOUT, "set noglob;\n", 12);
}
if (!csh)
# endif
/* running Bourne shell */
write(STDOUT, "export TERMCAP TERM;\n", 21);
}
}
/* report type if appropriate */
if (DoSetenv || Report || Ureport)
{
/* if type is the short name, find first alias (if any) */
makealias(Ttycap);
if (sequal(TtyType, Alias[0]) && Alias[1]) {
TtyType = Alias[1];
}
if (DoSetenv)
{
if (csh)
{
if (CmndLine)
write(STDOUT, "setenv TERM ", 12);
write(STDOUT, TtyType, strlen(TtyType));
write(STDOUT, " ", 1);
if (CmndLine)
write(STDOUT, ";\n", 2);
}
else
{
write(STDOUT, "TERM=", 5);
write(STDOUT, TtyType, strlen(TtyType));
write(STDOUT, ";\n", 2);
}
}
else if (Report)
{
write(STDOUT, TtyType, strlen(TtyType));
write(STDOUT, "\n", 1);
}
if (Ureport)
{
prs("Terminal type is ");
prs(TtyType);
prs("\n");
flush();
}
if (DoSetenv)
{
if (csh)
{
if (CmndLine)
write(STDOUT, "setenv TERMCAP '", 16);
}
else
write(STDOUT, "TERMCAP='", 9);
wrtermcap(Ttycap);
if (csh)
{
if (CmndLine)
{
write(STDOUT, "';\n", 3);
write(STDOUT, "unset noglob;\n", 14);
}
}
else
write(STDOUT, "';\n", 3);
}
}
if (RepOnly)
exit(0);
/* tell about changing erase and kill characters */
reportek("Erase", curerase, olderase, OLDERASE);
reportek("Kill", curkill, oldkill, OLDKILL);
# ifdef V6
/* update htmp */
if (!Dash_u)
{
if (Ttyid == 0)
Ttyid = ttyn(FILEDES);
if (Ttyid == 'x')
{
prs("Cannot update htmp\n");
flush();
}
else
{
/* update htmp file only if changed */
if (!bequal(Capbuf, hsgettype(), 2))
{
hsettype(Capbuf[0] | (Capbuf[1] << 8));
hput(Ttyid);
}
}
}
# endif
exit(0);
}
/*
* Set the hardware tabs on the terminal, using the ct (clear all tabs),
* st (set one tab) and ch (horizontal cursor addressing) capabilities.
* This is done before if and is, so they can patch in case we blow this.
*/
settabs()
{
char caps[100];
char *capsp = caps;
char *clear_tabs, *set_tab, *set_column, *set_pos;
char *tg_out, *tgoto();
int columns, lines, c;
clear_tabs = tgetstr("ct", &capsp);
set_tab = tgetstr("st", &capsp);
set_column = tgetstr("ch", &capsp);
if (set_column == 0)
set_pos = tgetstr("cm", &capsp);
columns = tgetnum("co");
lines = tgetnum("li");
if (clear_tabs && set_tab) {
prc('\r'); /* force to be at left margin */
tputs(clear_tabs, 0, prc);
}
if (set_tab) {
for (c=8; c<columns; c += 8) {
/* get to that column. */
tg_out = "OOPS"; /* also returned by tgoto */
if (set_column)
tg_out = tgoto(set_column, 0, c);
if (*tg_out == 'O' && set_pos)
tg_out = tgoto(set_pos, c, lines-1);
if (*tg_out != 'O')
tputs(tg_out, 1, prc);
else {
prc(' '); prc(' '); prc(' '); prc(' ');
prc(' '); prc(' '); prc(' '); prc(' ');
}
/* set the tab */
tputs(set_tab, 0, prc);
}
prc('\r');
return 1;
}
return 0;
}
setmode(flag)
int flag;
/* flag serves several purposes:
* if called as the result of a signal, flag will be > 0.
* if called from terminal init, flag == -1 means reset "oldmode".
* called with flag == 0 at end of normal mode processing.
*/
{
# ifndef USG
struct sgttyb *ttymode;
# else
struct termio *ttymode;
# endif
if (flag < 0) /* unconditionally reset oldmode (called from init) */
ttymode = &oldmode;
else if (!bequal(&mode, &oldmode, sizeof mode))
ttymode = &mode;
else /* don't need it */
# ifndef USG
ttymode = (struct sgttyb *)0;
# else
ttymode = (struct termio *)0;
# endif
if (ttymode)
{
# ifdef USG
ioctl(FILEDES, TCSETAW, ttymode);
# else
# ifndef V6
ioctl(FILEDES, TIOCSETN, ttymode); /* don't flush */
# else
stty(FILEDES, ttymode);
# endif
# endif
}
# ifdef CBVIRTTERM
if (VirTermNo != -2) {
int r1, r2;
extern int errno;
r1 = ioctl(FILEDES, LDGETT, &block);
block.st_flgs |= TM_SET;
block.st_termt = VirTermNo;
if (block.st_termt < 0)
block.st_termt = 0;
if (!HasAM)
block.st_flgs |= TM_ANL;
else
block.st_flgs &= ~TM_ANL;
r2 = ioctl(FILEDES, LDSETT, &block);
}
# endif
if (flag > 0) /* trapped signal */
exit(1);
}
reportek(name, new, old, def)
char *name;
char old;
char new;
char def;
{
register char o;
register char n;
register char *p;
char buf[32];
char *bufp;
if (BeQuiet)
return;
o = old;
n = new;
if (o == n && n == def)
return;
prs(name);
if (o == n)
prs(" is ");
else
prs(" set to ");
bufp = buf;
if (tgetstr("kb", &bufp) > 0 && n == buf[0] && buf[1] == NULL)
prs("Backspace\n");
else if (n == 0177)
prs("Delete\n");
else
{
if (n < 040)
{
prs("Ctrl-");
n ^= 0100;
}
p = "x\n";
p[0] = n;
prs(p);
}
flush();
}
setdelay(cap, dtab, bits, flags)
char *cap;
struct delay dtab[];
int bits;
int *flags;
{
register int i;
register struct delay *p;
# ifdef V6
extern int ospeed;
# else
extern short ospeed;
# endif
/* see if this capability exists at all */
i = tgetnum(cap);
if (i < 0)
i = 0;
/* No padding at speeds below PadBaud */
if (PadBaud > ospeed)
i = 0;
/* clear out the bits, replace with new ones */
*flags &= ~bits;
/* scan dtab for first entry with adequate delay */
for (p = dtab; p->d_delay >= 0; p++)
{
if (p->d_delay >= i)
{
p++;
break;
}
}
/* use last entry if none will do */
*flags |= (--p)->d_bits;
}
prs(s)
char *s;
{
while (*s != '\0')
prc(*s++);
}
char OutBuf[256];
int OutPtr;
prc(c)
char c;
{
OutBuf[OutPtr++] = c;
if (OutPtr >= sizeof OutBuf)
flush();
}
flush()
{
if (OutPtr > 0)
write(2, OutBuf, OutPtr);
OutPtr = 0;
}
cat(file)
char *file;
{
register int fd;
register int i;
char buf[BUFSIZ];
fd = open(file, 0);
if (fd < 0)
{
prs("Cannot open ");
prs(file);
prs("\n");
flush();
return;
}
while ((i = read(fd, buf, BUFSIZ)) > 0)
write(FILEDES, buf, i);
close(fd);
}
bmove(from, to, length)
char *from;
char *to;
int length;
{
register char *p, *q;
register int i;
i = length;
p = from;
q = to;
while (i-- > 0)
*q++ = *p++;
}
bequal(a, b, len) /* must be same thru len chars */
char *a;
char *b;
int len;
{
register char *p, *q;
register int i;
i = len;
p = a;
q = b;
while ((*p == *q) && --i > 0)
{
p++; q++;
}
return ((*p == *q) && i >= 0);
}
sequal(a, b) /* must be same thru NULL */
char *a;
char *b;
{
register char *p = a, *q = b;
while (*p && *q && (*p == *q))
{
p++; q++;
}
return (*p == *q);
}
makealias(buf)
char *buf;
{
register int i;
register char *a;
register char *b;
Alias[0] = a = Aliasbuf;
b = buf;
i = 1;
while (*b && *b != ':') {
if (*b == '|') {
*a++ = NULL;
Alias[i++] = a;
b++;
}
else
*a++ = *b++;
}
*a = NULL;
Alias[i] = NULL;
# ifdef DEB
for(i = 0; Alias[i]; printf("A:%s\n", Alias[i++]));
# endif
}
isalias(ident) /* is ident same as one of the aliases? */
char *ident;
{
char **a = Alias;
if (*a)
while (*a)
if (sequal(ident, *a))
return(YES);
else
a++;
return(NO);
}
# ifdef GTTYN
char *
stypeof(ttyid)
char *ttyid;
{
static char typebuf[BUFSIZ];
register char *PortType;
register char *PortName;
register char *TtyId;
register char *p;
register FILE *f;
if (ttyid == NOTTY)
return (DEFTYPE);
f = fopen(GTTYN, "r");
if (f == NULL)
return (DEFTYPE);
/* split off end of name */
TtyId = ttyid;
while (*ttyid)
if (*ttyid++ == '/')
TtyId = ttyid;
/* scan the file */
while (fgets(typebuf, sizeof typebuf, f) != NULL)
{
p = PortType = typebuf;
while (*p && isalnum(*p))
p++;
*p++ = NULL;
/* skip separator */
while (*p && !isalnum(*p))
p++;
PortName = p;
/* put NULL at end of name */
while (*p && isalnum(*p))
p++;
*p = NULL;
/* check match on port name */
if (sequal(PortName, TtyId)) /* found it */
{
fclose (f);
/* get aliases from termcap entry */
if (Mapped && tgetent(Capbuf, PortType) > 0) {
makealias(Capbuf);
if (sequal(Alias[0], PortType) && Alias[1])
PortType = Alias[1];
}
return(PortType);
}
}
fclose (f);
return (DEFTYPE);
}
# endif
/*
* routine to output the string for the environment TERMCAP variable
*/
#define WHITE(c) (c == ' ' || c == '\t')
char delcap[128][2];
int ncap = 0;
wrtermcap(bp)
char *bp;
{
char buf[CAPBUFSIZ];
register int i;
char *p = buf;
char *tp;
char *putbuf();
int space, empty;
/* discard names with blanks */
/** May not be desireable ? **/
while (*bp && *bp != ':') {
if (*bp == '|') {
tp = bp+1;
space = NO;
while (*tp && *tp != '|' && *tp != ':') {
space = (space || WHITE(*tp) );
tp++;
}
if (space) {
bp = tp;
continue;
}
}
*p++ = *bp++;
}
/**/
# ifdef CBVIRTTERM
if (VirTermNo > 0) {
p = putbuf(p, ":am"); /* All virt terms have auto margins */
cancelled("am");
}
# endif
while (*bp) {
switch (*bp) {
case ':': /* discard empty, cancelled or dupl fields */
tp = bp+1;
empty = YES;
while (*tp && *tp != ':') {
empty = (empty && WHITE(*tp) );
tp++;
}
# ifdef CBVIRTTERM
/*
* Virtual terminals use ic, not im or ei. Turn
* any of them into ic - duplicates will be cancelled
* below. I assume that terminals needing im+ic+ei
* are handled by the kernel.
*/
if (VirTermNo > 0 && !HasAM &&
(bp[1]=='i' && bp[2]=='m' ||
bp[1]=='e' && bp[2]=='i')) {
bp[1] = 'i';
bp[2] = 'c';
}
if (VirTermNo > 0 && !HasAM &&
(bp[1]=='c' && bp[2]=='s')) {
bp[1] = 'd';
bp[2] = 'l';
/* Also need al, so kludge: */
if (!cancelled("al"))
p = putbuf(p, ":al=\033\120");
}
# endif CBVIRTTERM
if (empty || cancelled(bp+1)) {
bp = tp;
continue;
}
# ifdef CBVIRTTERM
if (VirTermNo > 0 && !HasAM)
for (i = 0; vtab[i].value; i++) {
if (vtab[i].cap[0] == bp[1] &&
vtab[i].cap[1] == bp[2]) {
*p++ = *bp++; /* colon */
*p++ = *bp++; /* first char */
*p++ = *bp++; /* second " */
*p++ = *bp++; /* = sign */
p = putbuf(p, vtab[i].value);
bp = tp;
goto contin;
}
}
# endif CBVIRTTERM
break;
case ' ': /* no spaces in output */
p = putbuf(p, "\\040");
bp++;
continue;
case '!': /* the shell thinks this is history */
p = putbuf(p, "\\041");
bp++;
continue;
case ',': /* the shell thinks this is history */
p = putbuf(p, "\\054");
bp++;
continue;
case '"': /* no quotes in output */
p = putbuf(p, "\\042");
bp++;
continue;
case '\'': /* no quotes in output */
p = putbuf(p, "\\047");
bp++;
continue;
case '`': /* no back quotes in output */
p = putbuf(p, "\\140");
bp++;
continue;
case '\\':
case '^': /* anything following is OK */
*p++ = *bp++;
# ifdef CBVIRTTERM
if (*bp == 'E' && VirTermNo > 0 &&
(bp[-3]!='\\'||bp[-2]!='E') &&
(bp[1]!='\\'||bp[2]!='E'))
p = putbuf(p, "E\\");
# endif CBVIRTTERM
}
*p++ = *bp++;
contin: ;
}
*p++ = ':'; /* we skipped the last : with the : lookahead hack */
write (STDOUT, buf, p-buf);
}
cancelled(cap)
char *cap;
{
register int i;
for (i = 0; i < ncap; i++)
{
if (cap[0] == delcap[i][0] && cap[1] == delcap[i][1])
return (YES);
}
/* delete a second occurrance of the same capability */
delcap[ncap][0] = cap[0];
delcap[ncap][1] = cap[1];
ncap++;
return (cap[2] == '@');
}
char *
putbuf(ptr, str)
char *ptr;
char *str;
{
char buf[20];
while (*str) {
switch (*str) {
case '\033':
ptr = putbuf(ptr, "\\E");
str++;
break;
default:
if (*str <= ' ') {
sprintf(buf, "\\%03o", *str);
ptr = putbuf(ptr, buf);
str++;
} else
*ptr++ = *str++;
}
}
return (ptr);
}
baudrate(p)
char *p;
{
char buf[8];
int i = 0;
while (i < 7 && (isalnum(*p) || *p == '.'))
buf[i++] = *p++;
buf[i] = NULL;
for (i=0; speeds[i].string; i++)
if (sequal(speeds[i].string, buf))
return (speeds[i].speed);
return (-1);
}
char *
mapped(type)
char *type;
{
# ifdef V6
extern int ospeed;
# else
extern short ospeed;
# endif
int match;
# ifdef DEB
printf ("spd:%d\n", ospeed);
prmap();
# endif
Map = map;
while (Map->Ident)
{
if (*(Map->Ident) == NULL || sequal(Map->Ident, type) || isalias(Map->Ident))
{
match = NO;
switch (Map->Test)
{
case ANY: /* no test specified */
case ALL:
match = YES;
break;
case GT:
match = (ospeed > Map->Speed);
break;
case GE:
match = (ospeed >= Map->Speed);
break;
case EQ:
match = (ospeed == Map->Speed);
break;
case LE:
match = (ospeed <= Map->Speed);
break;
case LT:
match = (ospeed < Map->Speed);
break;
case NE:
match = (ospeed != Map->Speed);
break;
}
if (match)
return (Map->Type);
}
Map++;
}
/* no match found; return given type */
return (type);
}
# ifdef DEB
prmap()
{
Map = map;
while (Map->Ident)
{
printf ("%s t:%d s:%d %s\n",
Map->Ident, Map->Test, Map->Speed, Map->Type);
Map++;
}
}
# endif
char *
nextarg(argc, argv)
int argc;
char *argv[];
{
if (argc <= 0)
fatal ("Too few args: ", *argv);
if (*(*++argv) == '-')
fatal ("Unexpected arg: ", *argv);
return (*argv);
}
fatal (mesg, obj)
char *mesg;
char *obj;
{
prs (mesg);
prs (obj);
prc ('\n');
prs (USAGE);
flush();
exit(1);
}