** 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
** 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;
** 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
** The htmp file, used by ex, etc., can be updated.
** The current terminal type can be queried.
** tset [-] [-EC] [-eC] [-kC] [-s] [-h] [-u] [-r]
** [-m [ident] [test baudrate] :type]
** In systems with environments, use:
** Actually, this doesn't work because of a shell bug.
** tset -s ... > tset.tmp
** set term=(`tset -S ....`)
** setenv TERMCAP "$term[2]"
** Positional Parameters:
** type -- the terminal type to force. If this is
** specified, initialization is for this
** - -- 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.
** -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.
** -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
** 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 term=(`tset -S .....`)
** setenv TERMCAP "$term[2]"
** -Q -- be quiet. don't output 'Erase set to' etc.
** -I -- don't do terminal initialization (is & if
** contains a terminal id -> terminal type
** mapping; used when any user mapping is specified,
** or the environment doesn't have TERM set.
** a terminal_type -> terminal_capabilities
** -1 -- couldn't open ttycap.
** 1 -- bad terminal type, or standard output not tty.
** DIALUP -- the type code for a dialup port
** PLUGBOARD -- the code for a plugboard port.
** ARPANET -- the code for an arpanet port.
** BACKSPACE -- control-H, the default for -e.
** CONTROLX -- 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
** 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.
** Routines to handle htmp, ttytype, and ttycap.
** OLDDIALUP -- accept the -d flag. Map "sd" to "dialup".
** OLDPLUGBOARD -- accept the -p flag. Map "sp" to "plugboard".
** OLDARPANET -- accept the -a flag. Map "sa" to "arpanet".
** OLDFLAGS -- must be defined to compile code for any of
** the -d, -p, or -a flags.
** FULLLOGIN -- if defined, login sets the ttytype from
** 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.
** An incorrect option was specified.
** more command line arguments are required.
** wrong type of argument was encountered.
** The specified file could not be openned.
** An unknown terminal type was specified.
** Cannot update htmp file when the standard
** output is not a terminal.
** Telling that the erase character has been
** set to the specified character.
** Erase is ... Kill is ...
** Tells that the erase/kill characters were
** wierd before, but they are being left as-is.
** Set if FILEDES is not a terminal.
** Compilation Instructions:
** cc -n -O tset.c -ltermlib
** where 'bin' should be whoever owns the 'htmp' file.
** If 'htmp' is 666, then tset need not be setuid.
** Electronics Research Labs
** 7/80 -- '-S' added. -m mapping added. TERMCAP string
** 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.
** 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.
# define GTTYN "/etc/ttytype"
# define BACKSPACE ('H' & 037)
# define CONTROLX ('X' & 037)
# define DEFTYPE "unknown"
"usage: tset [-] [-hrsuIQS] [-eC] [-kC] [-m [ident][test speed]:type] [type]\n"
# define PLUGBOARD "plugboard"
# define OLDPLUGBOARD "sp"
# define ARPANET "arpanet"
char Erase_char
; /* new erase character */
char Kill_char
; /* new kill character */
char Specialerase
; /* set => Erase_char only on terminals with backspace */
ttyid_t Ttyid
= NOTTY
; /* terminal identifier */
char *TtyType
; /* type of terminal */
char *DefType
; /* default type if none other computed */
char *NewType
; /* mapping identifier based on old flags */
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 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 */
char Capbuf
[CAPBUFSIZ
]; /* line from /etc/termcap for this TtyType */
char *Ttycap
; /* termcap line from termcap or environ */
# include "tset.delays.h"
extern char *hsgettype();
if (gtty(FILEDES
, &mode
) < 0)
bmove(&mode
, &oldmode
, sizeof mode
);
/* scan argument list and collect flags */
if (argc
== 2 && argv
[1][0] == '-' && argv
[1][1] == '\0')
Report
++; /* report current terminal type */
else while (*p
) switch (*p
++)
case 'r': /* report to user */
case 'E': /* special erase: operate on all but TTY33 */
/* explicit fall-through to -e case */
case 'e': /* erase character */
if (*p
== '^' && p
[1] != NULL
)
case 'k': /* kill character */
if (*p
== '^' && p
[1] != NULL
)
case 'd': /* dialup type */
case 'p': /* plugboard type */
case 'a': /* arpanet type */
mapold
: Map
->Ident
= NewType
;
p
= nextarg(argc
--, argv
++);
case 'm': /* map identifier to type */
/* This code is very loose. Almost no
** syntax checking is done!! However,
** illegal syntax will only produce
p
= nextarg(argc
--, argv
++);
Map
->Ident
= p
; /* identifier */
while (!Break
) switch (*p
)
p
= nextarg(argc
--, argv
++);
case ':': /* mapped type */
case '>': /* conditional */
case '<': /* conditional */
case '=': /* conditional */
case '!': /* invert conditions */
case 'B': /* Baud rate */
/* intentional fallthru */
if (isdigit(*p
) || *p
== 'e')
Map
->Speed
= baudrate(p
);
while (isalnum(*p
) || *p
== '.')
if (Not
) /* invert sense of test */
Map
->Test
= (~(Map
->Test
))&ALL
;
p
= nextarg(argc
--, argv
++);
case 'h': /* don't get type from htmp or env */
case 'u': /* don't update htmp */
case 's': /* output setenv commands */
case 'S': /* output setenv strings */
case 'I': /* no initialization */
Map
->Ident
= ""; /* means "map any type" */
Map
->Test
= ALL
; /* at all baud rates */
Map
->Type
= DefType
; /* to the default type */
/* get current idea of terminal type from environment */
if (!Dash_h
&& !Mapped
&& TtyType
== 0)
TtyType
= getenv("TERM");
/* determine terminal id if needed */
if (Ttyid
== NOTTY
&& (TtyType
== 0 || !Dash_h
|| !Dash_u
))
if (!RepOnly
&& Ttyid
== NOTTY
&& (TtyType
== 0 || !Dash_h
))
Ttyid
= ttyname(FILEDES
);
/* 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
))
/* find terminal type (if not already known) */
if (TtyType
== 0 && !Dash_h
)
/* get type from /etc/htmp */
/* If still undefined, look at /etc/ttytype */
TtyType
= stypeof(Ttyid
);
/* If still undefined, use DEFTYPE */
/* check for dialup or other mapping */
TtyType
= mapped(TtyType
, ospeed
);
/* TtyType now contains a pointer to the type of the terminal */
/* If the first character is '?', ask the user */
/* read the terminal. If not empty, set type */
i
= read(2, buf
, sizeof buf
- 1);
/* get terminal capabilities */
switch (tgetent(Capbuf
, TtyType
))
prs("Cannot open termcap file\n");
/* determine erase and kill characters */
if (Specialerase
&& !tgetflag("bs"))
p
= tgetstr("kb", &bufp
);
if (p
== NULL
|| p
[1] != '\0')
p
= tgetstr("bc", &bufp
);
if (p
!= NULL
&& p
[1] == '\0')
if (Erase_char
== 0 && !tgetflag("os") && mode
.sg_erase
== OLDERASE
)
if (tgetflag("bs") || bs_char
!= 0)
Erase_char
= (bs_char
!= 0) ? bs_char
: BACKSPACE
;
mode
.sg_erase
= OLDERASE
;
mode
.sg_erase
= Erase_char
;
mode
.sg_kill
= Kill_char
;
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] == 'T')
mode
.sg_flags
&= ~(EVENP
| ODDP
| RAW
);
mode
.sg_flags
&= ~CBREAK
;
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 */
if (tgetflag("HD")) /* half duplex */
if (tgetflag("pt")) /* print tabs */
if (!bequal(&mode
, &oldmode
, sizeof mode
))
ioctl(FILEDES
, TIOCSETN
, &mode
);
if (tgetstr("pc", &bufp
) != 0)
/* output startup string */
if (tgetstr("is", &bufp
) != 0)
if (tgetstr("if", &bufp
) != 0)
sleep(1); /* let terminal settle down */
/* set up environment for the shell we are using */
/* (this code is rather heuristic) */
if ((sh
= getenv("SHELL")) && (i
= strlen(sh
)) >= 3)
if ((csh
= sequal(p
, "csh")) && CmndLine
)
write(STDOUT
, "set noglob;\n", 12);
/* running system shell */
write(STDOUT
, "export TERMCAP TERM;\n", 21);
/* report type if appropriate */
if (DoSetenv
|| Report
|| Ureport
)
/* find first alias (if any) */
for (p
= Ttycap
; *p
!= 0 && *p
!= '|' && *p
!= ':'; p
++)
if (*p
== 0 || *p
== ':')
while (*p
!= '|' && *p
!= ':' && *p
!= 0)
write(STDOUT
, "setenv TERM ", 12);
write(STDOUT
, bufp
, p
- bufp
);
write(STDOUT
, "TERM=", 5);
write(STDOUT
, bufp
, p
- bufp
);
write(STDOUT
, bufp
, p
- bufp
);
prs("Terminal type is ");
write(STDOUT
, "setenv TERMCAP '", 16);
write(STDOUT
, "TERMCAP='", 9);
write(STDOUT
, "';\n", 3);
write(STDOUT
, "unset noglob;\n", 14);
write(STDOUT
, "';\n", 3);
/* tell about changing erase and kill characters */
reportek("Erase", mode
.sg_erase
, oldmode
.sg_erase
, OLDERASE
);
reportek("Kill", mode
.sg_kill
, oldmode
.sg_kill
, OLDKILL
);
prs("Cannot update htmp\n");
/* update htmp file only if changed */
if (!bequal(Capbuf
, hsgettype(), 2))
hsettype(Capbuf
[0] | (Capbuf
[1] << 8));
reportek(name
, new, old
, def
)
setdelay(cap
, dtab
, bits
, flags
)
register struct delay
*p
;
/* see if this capability exists at all */
/* clear out the bits, replace with new ones */
/* scan dtab for first entry with adequate delay */
for (p
= dtab
; p
->d_delay
>= 0; p
++)
/* use last entry if none will do */
if (OutPtr
>= sizeof OutBuf
)
write(2, OutBuf
, OutPtr
);
while ((i
= read(fd
, buf
, BUFSIZ
)) > 0)
while (*p
&& *q
&& (*p
== *q
) && --i
> 0)
return ((*p
== *q
) && i
>= 0);
register char *p
= a
, *q
= b
;
while (*p
&& *q
&& (*p
== *q
))
/* split off end of name */
while (fgets(typebuf
, sizeof typebuf
, f
) != NULL
)
while (*p
&& isalnum(*p
))
while (*p
&& !isalnum(*p
))
/* put NULL at end of name */
while (*p
&& isalnum(*p
))
/* check match on port name */
if (sequal(PortName
, TtyId
)) /* found it */
if (sequal(PortType
, OLDDIALUP
))
if (sequal(PortType
, OLDPLUGBOARD
))
if (sequal(PortType
, OLDARPANET
))
* routine to output the string for the environment TERMCAP variable
#define WHITE(c) (c == ' ' || c == '\t')
/* discard names with blanks */
/** May not be desireable ? **/
while (*bp
&& *bp
!= ':') {
while (*tp
&& *tp
!= '|' && *tp
!= ':') {
space
= (space
|| WHITE(*tp
) );
case ':': /* discard empty, cancelled or dupl fields */
while (*tp
&& *tp
!= ':') {
empty
= (empty
&& WHITE(*tp
) );
if (empty
|| cancelled(bp
+1)) {
case ' ': /* no spaces in output */
case '"': /* no quotes in output */
case '\'': /* no quotes in output */
case '^': /* anything following is OK */
write (STDOUT
, buf
, p
-buf
);
for (i
= 0; i
< ncap
; i
++)
if (cap
[0] == delcap
[i
][0] && cap
[1] == delcap
[i
][1])
/* delete a second occurrance of the same capability */
delcap
[ncap
][0] = cap
[0];
delcap
[ncap
][1] = cap
[1];
while (i
< 7 && (isalnum(*p
) || *p
== '.'))
for (i
=0; speeds
[i
].string
; i
++)
if (sequal(speeds
[i
].string
, buf
))
return (speeds
[i
].speed
);
printf ("spd:%d\n", speed
);
if (*(Map
->Ident
) == NULL
|| bequal(Map
->Ident
, type
, 4))
case ANY
: /* no test specified */
match
= (speed
> Map
->Speed
);
match
= (speed
>= Map
->Speed
);
match
= (speed
== Map
->Speed
);
match
= (speed
<= Map
->Speed
);
match
= (speed
< Map
->Speed
);
match
= (speed
!= Map
->Speed
);
/* no match found; return given type */
printf ("%s t:%d s:%d %s\n",
Map
->Ident
, Map
->Test
, Map
->Speed
, Map
->Type
);
fatal ("Too few args: ", *argv
);
fatal ("Unexpected arg: ", *argv
);