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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.
- */
-
- #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 <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 <stdio.h>
- #include <paths.h>
-
- 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();
-
- 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 = "typescript";
- 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);
- 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);
- while ((cc = read(0, ibuf, BUFSIZ)) > 0)
- (void) write(master, ibuf, cc);
- done();
- }
-
- #include <sys/wait.h>
-
- 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);
- }
- 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;
-
- rtt = tt;
- 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);
- 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);
- }
-