Init

cmd/script/script.c

@@ -0,0 +1,276 @@
+/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+/*	THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T	*/
+/*	The copyright notice above does not evidence any   	*/
+/*	actual or intended publication of such source code.	*/
+
+/*
+ * Copyright (c) 1980 Regents of the University of California.
+ * All rights reserved.  The Berkeley software License Agreement
+ * specifies the terms and conditions for redistribution.
+ */
+
+/*      Portions Copyright(c) 1988, Sun Microsystems, Inc.      */
+/*      All Rights Reserved.                                    */
+
+#ident	"@(#)script.c	1.10	92/12/07 SMI"	/* SVr4.0 1.1	*/
+
+/*
+ * script
+ */
+#include <stdio.h>
+#include <signal.h>
+#include <fcntl.h>
+#include <locale.h>
+#include <time.h>
+#include <sys/stropts.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/termios.h>
+#include <sys/file.h>
+#include <errno.h>
+
+int 	grantpt();
+int 	unlockpt();
+char	*ptsname();
+
+char	*getenv();
+struct tm *localtime();
+char	*shell;
+FILE	*fscript;
+int	master;			/* file descriptor for master pseudo-tty */
+int	slave;			/* file descriptor for slave pseudo-tty */
+int	child;
+int	subchild;
+char	*fname = "typescript";
+void	sigwinch();
+void	finish();
+
+struct	termios b;
+struct	winsize size;
+int	lb;
+int	l;
+char	*mptname = "/dev/ptmx";	/* master pseudo-tty device */
+
+int	aflg;
+
+main(argc, argv)
+	int argc;
+	char *argv[];
+{
+	uid_t ruidt;
+	gid_t gidt;
+
+	(void) setlocale(LC_ALL, "");
+#if !defined(TEXT_DOMAIN)
+#define	TEXT_DOMAIN	"SYS_TEST"
+#endif
+	(void) textdomain(TEXT_DOMAIN);
+
+	shell = getenv("SHELL");
+	if (shell == 0)
+		shell = "/bin/sh";
+	argc--, argv++;
+	while (argc > 0 && argv[0][0] == '-') {
+		switch (argv[0][1]) {
+
+		case 'a':
+			aflg++;
+			break;
+
+		default:
+			fprintf(stderr,
+			    gettext("usage: script [ -a ] [ typescript ]\n"));
+			exit(1);
+		}
+		argc--, argv++;
+	}
+	if (argc > 0)
+		fname = argv[0];
+	ruidt = getuid();
+	gidt = getgid();
+	if ((fscript = fopen(fname, aflg ? "a" : "w")) == NULL) {
+		perror(fname);
+		fail();
+	}
+	chown(fname, ruidt, gidt);
+	getmaster();
+	printf(gettext("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()
+{
+	char ibuf[BUFSIZ];
+	int cc;
+
+	(void) fclose(fscript);
+	sigset(SIGWINCH, sigwinch);
+
+	while ((cc = read(0, ibuf, BUFSIZ)) != 0) {
+		if (cc == -1) {
+			if (errno == EINTR) {   /* SIGWINCH probably */
+				continue;
+			} else {
+				break;
+			}
+		}
+		(void) write(master, ibuf, cc);
+	}
+	done();
+}
+
+void
+sigwinch()
+{
+	struct winsize ws;
+
+	if (ioctl(0, TIOCGWINSZ, &ws) == 0)
+		(void) ioctl(master, TIOCSWINSZ, &ws);
+}
+
+#include <sys/wait.h>
+
+void
+finish()
+{
+	int status;
+	register int pid;
+	register int die = 0;
+
+	while ((pid = wait(&status)) > 0)
+		if (pid == child)
+			die = 1;
+
+	if (die)
+		done();
+}
+
+dooutput()
+{
+	time_t tvec;
+	char obuf[BUFSIZ];
+	char tbuf[BUFSIZ];
+	int cc;
+
+	(void) close(0);
+	tvec = time((time_t *)0);
+	strftime(tbuf, BUFSIZ, "%c", localtime(&tvec));
+	fprintf(fscript, gettext("Script started on %s\n"), tbuf);
+	for (;;) {
+		cc = read(master, obuf, sizeof (obuf));
+		if (cc <= 0)
+			break;
+		(void) write(1, obuf, cc);
+		(void) fwrite(obuf, 1, cc, fscript);
+	}
+	done();
+}
+
+doshell()
+{
+
+	setpgrp();	/* relinquish control terminal */
+	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", (char *)0);
+	perror(shell);
+	fail();
+}
+
+fixtty()
+{
+	struct termios sbuf;
+
+	sbuf = b;
+	sbuf.c_iflag &= ~(INLCR|IGNCR|ICRNL|IUCLC|IXON);
+	sbuf.c_oflag &= ~OPOST;
+	sbuf.c_lflag &= ~(ICANON|ISIG|ECHO);
+	sbuf.c_cc[VMIN] = 1;
+	sbuf.c_cc[VTIME] = 0;
+	(void) ioctl(0, TCSETSF, (char *)&sbuf);
+}
+
+fail()
+{
+
+	(void) kill(0, SIGTERM);
+	done();
+}
+
+done()
+{
+	time_t tvec;
+	char tbuf[BUFSIZ];
+
+	if (subchild) {
+		tvec = time((time_t *)0);
+		strftime(tbuf, BUFSIZ, "%c", localtime(&tvec));
+		fprintf(fscript, gettext("\nscript done on %s\n"), tbuf);
+		(void) fclose(fscript);
+		(void) close(master);
+	} else {
+		(void) ioctl(0, TCSETSW, (char *)&b);
+		printf(gettext("Script done, file is %s\n"), fname);
+	}
+	exit(0);
+}
+
+getmaster()
+{
+	struct stat stb;
+
+	if ((master=open(mptname, O_RDWR)) >= 0) {   /* a pseudo-tty is free */
+		(void) ioctl(0, TCGETS, (char *)&b);
+		(void) ioctl(0, TIOCGWINSZ, (char *)&size);
+		return;
+	} else {				/* out of pseudo-tty's */
+		perror(mptname);
+		fprintf(stderr, gettext("Out of pseudo-tty's\n"));
+		fail();
+	}
+}
+
+getslave()
+{
+	char *slavename;	/* name of slave pseudo-tty */
+
+	grantpt(master);		/* change permissions of slave */
+	unlockpt(master);			/* unlock slave */
+	slavename = ptsname(master);		/* get name of slave */
+	slave = open(slavename, O_RDWR);	/* open slave */
+	if (slave < 0) {			/* error on opening slave */
+		perror(slavename);
+		fail();
+	}
+	ioctl(slave, I_PUSH, "ptem");	/* push pt hw emulation module */
+	ioctl(slave, I_PUSH, "ldterm");		/* push line discipline */
+
+	(void) ioctl(slave, TCSETSF, (char *)&b);
+	(void) ioctl(slave, TIOCSWINSZ, (char *)&size);
+}