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January 11, 2019 01:53
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/* | |
* Copyright (c) 1980 Regents of the University of California. | |
* All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions | |
* are met: | |
* 1. Redistributions of source code must retain the above copyright | |
* notice, this list of conditions and the following disclaimer. | |
* 2. Redistributions in binary form must reproduce the above copyright | |
* notice, this list of conditions and the following disclaimer in the | |
* documentation and/or other materials provided with the distribution. | |
* 3. All advertising materials mentioning features or use of this software | |
* must display the following acknowledgement: | |
* This product includes software developed by the University of | |
* California, Berkeley and its contributors. | |
* 4. Neither the name of the University nor the names of its contributors | |
* may be used to endorse or promote products derived from this software | |
* without specific prior written permission. | |
* | |
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
* SUCH DAMAGE. | |
*/ | |
/* | |
* 1999-02-22 Arkadiusz Mi¶kiewicz <misiek@pld.ORG.PL> | |
* - added Native Language Support | |
* | |
* 2000-07-30 Per Andreas Buer <per@linpro.no> - added "q"-option | |
*/ | |
/* | |
* script | |
*/ | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <paths.h> | |
#include <time.h> | |
#include <sys/types.h> | |
#include <sys/stat.h> | |
#include <termios.h> | |
#include <sys/ioctl.h> | |
#include <sys/time.h> | |
#include <sys/file.h> | |
#include <sys/signal.h> | |
#include "nls.h" | |
#ifdef __linux__ | |
#include <unistd.h> | |
#include <string.h> | |
#endif | |
#ifdef HAVE_LIBUTIL | |
#include <pty.h> | |
#endif | |
void finish(int); | |
void done(void); | |
void fail(void); | |
void resize(int); | |
void fixtty(void); | |
void getmaster(void); | |
void getslave(void); | |
void doinput(void); | |
void dooutput(void); | |
void doshell(void); | |
char *shell; | |
FILE *fscript; | |
int master; | |
int slave; | |
int child; | |
int subchild; | |
char *fname; | |
struct termios tt; | |
struct winsize win; | |
int lb; | |
int l; | |
#ifndef HAVE_LIBUTIL | |
char line[] = "/dev/ptyXX"; | |
#endif | |
int aflg = 0; | |
char *cflg = NULL; | |
int fflg = 0; | |
int qflg = 0; | |
int tflg = 0; | |
static char *progname; | |
static void | |
die_if_link(char *fn) { | |
struct stat s; | |
if (lstat(fn, &s) == 0 && (S_ISLNK(s.st_mode) || s.st_nlink > 1)) { | |
fprintf(stderr, | |
_("Warning: `%s' is a link.\n" | |
"Use `%s [options] %s' if you really " | |
"want to use it.\n" | |
"Script not started.\n"), | |
fn, progname, fn); | |
exit(1); | |
} | |
} | |
/* | |
* script -t prints time delays as floating point numbers | |
* The example program (scriptreplay) that we provide to handle this | |
* timing output is a perl script, and does not handle numbers in | |
* locale format (not even when "use locale;" is added). | |
* So, since these numbers are not for human consumption, it seems | |
* easiest to set LC_NUMERIC here. | |
*/ | |
int | |
main(int argc, char **argv) { | |
extern int optind; | |
char *p; | |
int ch; | |
progname = argv[0]; | |
if ((p = strrchr(progname, '/')) != NULL) | |
progname = p+1; | |
setlocale(LC_ALL, ""); | |
setlocale(LC_NUMERIC, "C"); /* see comment above */ | |
bindtextdomain(PACKAGE, LOCALEDIR); | |
textdomain(PACKAGE); | |
if (argc == 2) { | |
if (!strcmp(argv[1], "-V") || !strcmp(argv[1], "--version")) { | |
printf(_("%s (%s)\n"), | |
progname, PACKAGE_STRING); | |
return 0; | |
} | |
} | |
while ((ch = getopt(argc, argv, "ac:fqt")) != -1) | |
switch((char)ch) { | |
case 'a': | |
aflg++; | |
break; | |
case 'c': | |
cflg = optarg; | |
break; | |
case 'f': | |
fflg++; | |
break; | |
case 'q': | |
qflg++; | |
break; | |
case 't': | |
tflg++; | |
break; | |
case '?': | |
default: | |
fprintf(stderr, | |
_("usage: script [-a] [-f] [-q] [-t] [file]\n")); | |
exit(1); | |
} | |
argc -= optind; | |
argv += optind; | |
if (argc > 0) | |
fname = argv[0]; | |
else { | |
fname = "typescript"; | |
die_if_link(fname); | |
} | |
if ((fscript = fopen(fname, aflg ? "a" : "w")) == NULL) { | |
perror(fname); | |
fail(); | |
} | |
shell = getenv("SHELL"); | |
if (shell == NULL) | |
shell = _PATH_BSHELL; | |
getmaster(); | |
if (!qflg) | |
printf(_("Script started, file is %s\n"), fname); | |
fixtty(); | |
(void) signal(SIGCHLD, finish); | |
child = fork(); | |
if (child < 0) { | |
perror("fork"); | |
fail(); | |
} | |
if (child == 0) { | |
subchild = child = fork(); | |
if (child < 0) { | |
perror("fork"); | |
fail(); | |
} | |
if (child) | |
dooutput(); | |
else | |
doshell(); | |
} else | |
(void) signal(SIGWINCH, resize); | |
doinput(); | |
return 0; | |
} | |
void | |
doinput() { | |
register int cc; | |
char ibuf[BUFSIZ]; | |
(void) fclose(fscript); | |
while ((cc = read(0, ibuf, BUFSIZ)) > 0) | |
(void) write(master, ibuf, cc); | |
done(); | |
} | |
#include <sys/wait.h> | |
void | |
finish(int dummy) { | |
int status; | |
register int pid; | |
register int die = 0; | |
while ((pid = wait3(&status, WNOHANG, 0)) > 0) | |
if (pid == child) | |
die = 1; | |
if (die) | |
done(); | |
} | |
void | |
resize(int dummy) { | |
/* transmit window change information to the child */ | |
(void) ioctl(0, TIOCGWINSZ, (char *)&win); | |
(void) ioctl(slave, TIOCSWINSZ, (char *)&win); | |
kill(child, SIGWINCH); | |
} | |
/* | |
* Stop extremely silly gcc complaint on %c: | |
* warning: `%c' yields only last 2 digits of year in some locales | |
*/ | |
static void | |
my_strftime(char *buf, size_t len, const char *fmt, const struct tm *tm) { | |
strftime(buf, len, fmt, tm); | |
} | |
void | |
dooutput() { | |
register int cc; | |
time_t tvec; | |
char obuf[BUFSIZ]; | |
struct timeval tv; | |
double oldtime=time(NULL), newtime; | |
(void) close(0); | |
#ifdef HAVE_LIBUTIL | |
(void) close(slave); | |
#endif | |
tvec = time((time_t *)NULL); | |
my_strftime(obuf, sizeof obuf, "%c\n", localtime(&tvec)); | |
fprintf(fscript, _("Script started on %s"), obuf); | |
for (;;) { | |
if (tflg) | |
gettimeofday(&tv, NULL); | |
cc = read(master, obuf, sizeof (obuf)); | |
if (cc <= 0) | |
break; | |
if (tflg) { | |
newtime = tv.tv_sec + (double) tv.tv_usec / 1000000; | |
fprintf(stderr, "%f %i\n", newtime - oldtime, cc); | |
oldtime = newtime; | |
} | |
(void) write(1, obuf, cc); | |
(void) fwrite(obuf, 1, cc, fscript); | |
if (fflg) | |
(void) fflush(fscript); | |
} | |
done(); | |
} | |
void | |
doshell() { | |
char *shname; | |
#if 0 | |
int t; | |
t = open(_PATH_TTY, O_RDWR); | |
if (t >= 0) { | |
(void) ioctl(t, TIOCNOTTY, (char *)0); | |
(void) close(t); | |
} | |
#endif | |
getslave(); | |
(void) close(master); | |
(void) fclose(fscript); | |
(void) dup2(slave, 0); | |
(void) dup2(slave, 1); | |
(void) dup2(slave, 2); | |
(void) close(slave); | |
shname = strrchr(shell, '/'); | |
if (shname) | |
shname++; | |
else | |
shname = shell; | |
if (cflg) | |
execl(shell, shname, "-c", cflg, NULL); | |
else | |
execl(shell, shname, "-i", NULL); | |
perror(shell); | |
fail(); | |
} | |
void | |
fixtty() { | |
struct termios rtt; | |
rtt = tt; | |
cfmakeraw(&rtt); | |
rtt.c_lflag &= ~ECHO; | |
(void) tcsetattr(0, TCSAFLUSH, &rtt); | |
} | |
void | |
fail() { | |
(void) kill(0, SIGTERM); | |
done(); | |
} | |
void | |
done() { | |
time_t tvec; | |
if (subchild) { | |
if (!qflg) { | |
char buf[BUFSIZ]; | |
tvec = time((time_t *)NULL); | |
my_strftime(buf, sizeof buf, "%c\n", localtime(&tvec)); | |
fprintf(fscript, _("\nScript done on %s"), buf); | |
} | |
(void) fclose(fscript); | |
(void) close(master); | |
} else { | |
(void) tcsetattr(0, TCSAFLUSH, &tt); | |
if (!qflg) | |
printf(_("Script done, file is %s\n"), fname); | |
} | |
exit(0); | |
} | |
void | |
getmaster() { | |
#ifdef HAVE_LIBUTIL | |
(void) tcgetattr(0, &tt); | |
(void) ioctl(0, TIOCGWINSZ, (char *)&win); | |
if (openpty(&master, &slave, NULL, &tt, &win) < 0) { | |
fprintf(stderr, _("openpty failed\n")); | |
fail(); | |
} | |
#else | |
char *pty, *bank, *cp; | |
struct stat stb; | |
pty = &line[strlen("/dev/ptyp")]; | |
for (bank = "pqrs"; *bank; bank++) { | |
line[strlen("/dev/pty")] = *bank; | |
*pty = '0'; | |
if (stat(line, &stb) < 0) | |
break; | |
for (cp = "0123456789abcdef"; *cp; cp++) { | |
*pty = *cp; | |
master = open(line, O_RDWR); | |
if (master >= 0) { | |
char *tp = &line[strlen("/dev/")]; | |
int ok; | |
/* verify slave side is usable */ | |
*tp = 't'; | |
ok = access(line, R_OK|W_OK) == 0; | |
*tp = 'p'; | |
if (ok) { | |
(void) tcgetattr(0, &tt); | |
(void) ioctl(0, TIOCGWINSZ, | |
(char *)&win); | |
return; | |
} | |
(void) close(master); | |
} | |
} | |
} | |
fprintf(stderr, _("Out of pty's\n")); | |
fail(); | |
#endif /* not HAVE_LIBUTIL */ | |
} | |
void | |
getslave() { | |
#ifndef HAVE_LIBUTIL | |
line[strlen("/dev/")] = 't'; | |
slave = open(line, O_RDWR); | |
if (slave < 0) { | |
perror(line); | |
fail(); | |
} | |
(void) tcsetattr(slave, TCSAFLUSH, &tt); | |
(void) ioctl(slave, TIOCSWINSZ, (char *)&win); | |
#endif | |
(void) setsid(); | |
(void) ioctl(slave, TIOCSCTTY, 0); | |
} |
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