/*
* Copyright (c) 1980, 1992, 1993
* The 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#ifndef lint
static const char copyright[] =
"@(#) Copyright (c) 1980, 1992, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif
#ifndef lint
static const char sccsid[] = "@(#)script.c 8.1 (Berkeley) 6/6/93";
#endif
#include <sys/types.h>
#include <sys/wait.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/time.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <libutil.h>
#include <paths.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <termios.h>
#include <unistd.h>
FILE *fscript;
int master, slave;
int child;
const char *fname;
int qflg, ttyflg;
struct termios tt;
void done(int) __dead2;
void dooutput(void);
void doshell(char **);
void fail(void);
void finish(void);
static void usage(void);
int
main(int argc, char *argv[])
{
int cc;
struct termios rtt, stt;
struct winsize win;
int aflg, kflg, ch, n;
struct timeval tv, *tvp;
time_t tvec, start;
char obuf[BUFSIZ];
char ibuf[BUFSIZ];
fd_set rfd;
int flushtime = 30;
aflg = kflg = 0;
while ((ch = getopt(argc, argv, "aqkt:")) != -1)
switch(ch) {
case 'a':
aflg = 1;
break;
case 'q':
qflg = 1;
break;
case 'k':
kflg = 1;
break;
case 't':
flushtime = atoi(optarg);
if (flushtime < 0)
err(1, "invalid flush time %d", flushtime);
break;
case '?':
default:
usage();
}
argc -= optind;
argv += optind;
if (argc > 0) {
fname = argv[0];
argv++;
argc--;
} else
fname = "typescript";
if ((fscript = fopen(fname, aflg ? "a" : "w")) == NULL)
err(1, "%s", fname);
if ((ttyflg = isatty(STDIN_FILENO)) != 0) {
if (tcgetattr(STDIN_FILENO, &tt) == -1)
err(1, "tcgetattr");
if (ioctl(STDIN_FILENO, TIOCGWINSZ, &win) == -1)
err(1, "ioctl");
if (openpty(&master, &slave, NULL, &tt, &win) == -1)
err(1, "openpty");
} else {
if (openpty(&master, &slave, NULL, NULL, NULL) == -1)
err(1, "openpty");
}
if (!qflg) {
tvec = time(NULL);
(void)printf("Script started, output file is %s\n", fname);
(void)fprintf(fscript, "Script started on %s", ctime(&tvec));
fflush(fscript);
}
if (ttyflg) {
rtt = tt;
cfmakeraw(&rtt);
rtt.c_lflag &= ~ECHO;
(void)tcsetattr(STDIN_FILENO, TCSAFLUSH, &rtt);
}
child = fork();
if (child < 0) {
warn("fork");
done(1);
}
if (child == 0)
doshell(argv);
close(slave);
if (flushtime > 0)
tvp = &tv;
else
tvp = NULL;
start = time(0);
FD_ZERO(&rfd);
for (;;) {
FD_SET(master, &rfd);
FD_SET(STDIN_FILENO, &rfd);
if (flushtime > 0) {
tv.tv_sec = flushtime;
tv.tv_usec = 0;
}
n = select(master + 1, &rfd, 0, 0, tvp);
if (n < 0 && errno != EINTR)
break;
if (n > 0 && FD_ISSET(STDIN_FILENO, &rfd)) {
cc = read(STDIN_FILENO, ibuf, BUFSIZ);
if (cc < 0)
break;
if (cc == 0)
(void)write(master, ibuf, 0);
if (cc > 0) {
(void)write(master, ibuf, cc);
if (kflg && tcgetattr(master, &stt) >= 0 &&
((stt.c_lflag & ECHO) == 0)) {
(void)fwrite(ibuf, 1, cc, fscript);
}
}
}
if (n > 0 && FD_ISSET(master, &rfd)) {
cc = read(master, obuf, sizeof (obuf));
if (cc <= 0)
break;
(void)write(STDOUT_FILENO, obuf, cc);
(void)fwrite(obuf, 1, cc, fscript);
}
tvec = time(0);
if (tvec - start >= flushtime) {
fflush(fscript);
start = tvec;
}
}
finish();
done(0);
}
static void
usage(void)
{
(void)fprintf(stderr,
"usage: script [-akq] [-t time] [file [command ...]]\n");
exit(1);
}
void
finish(void)
{
int e, status;
if (waitpid(child, &status, 0) == child) {
if (WIFEXITED(status))
e = WEXITSTATUS(status);
else if (WIFSIGNALED(status))
e = WTERMSIG(status);
else /* can't happen */
e = 1;
done(e);
}
}
void
doshell(char **av)
{
const char *shell;
shell = getenv("SHELL");
if (shell == NULL)
shell = _PATH_BSHELL;
(void)close(master);
(void)fclose(fscript);
login_tty(slave);
if (av[0]) {
execvp(av[0], av);
warn("%s", av[0]);
} else {
execl(shell, shell, "-i", (char *)NULL);
warn("%s", shell);
}
fail();
}
void
fail(void)
{
(void)kill(0, SIGTERM);
done(1);
}
void
done(int eno)
{
time_t tvec;
if (ttyflg)
(void)tcsetattr(STDIN_FILENO, TCSAFLUSH, &tt);
tvec = time(NULL);
if (!qflg) {
(void)fprintf(fscript,"\nScript done on %s", ctime(&tvec));
(void)printf("\nScript done, output file is %s\n", fname);
}
(void)fclose(fscript);
(void)close(master);
exit(eno);
}
