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-rw-r--r--shell_cmds/script/script.c546
1 files changed, 546 insertions, 0 deletions
diff --git a/shell_cmds/script/script.c b/shell_cmds/script/script.c
new file mode 100644
index 0000000..90e895e
--- /dev/null
+++ b/shell_cmds/script/script.c
@@ -0,0 +1,546 @@
+/*
+ * Copyright (c) 2010, 2012 David E. O'Brien
+ * 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.
+ * 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/param.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/wait.h>
+#include <sys/stat.h>
+#include <sys/ioctl.h>
+#include <sys/time.h>
+#include <sys/uio.h>
+#ifdef __APPLE__
+#include <libkern/OSByteOrder.h>
+#else
+#include <sys/endian.h>
+#endif
+#ifdef ENABLE_FILEMON
+#include <dev/filemon/filemon.h>
+#endif /* ENABLE_FILEMON */
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#ifdef __APPLE__
+#include <util.h>
+#else
+#include <libutil.h>
+#endif
+#include <paths.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <termios.h>
+#include <unistd.h>
+
+#define DEF_BUF 65536
+
+struct stamp {
+ uint64_t scr_len; /* amount of data */
+ uint64_t scr_sec; /* time it arrived in seconds... */
+ uint32_t scr_usec; /* ...and microseconds */
+ uint32_t scr_direction; /* 'i', 'o', etc (also indicates endianness) */
+};
+
+static FILE *fscript;
+static int master, slave;
+static int child;
+static const char *fname;
+static char *fmfname;
+#ifdef ENABLE_FILEMON
+static int fflg, qflg, ttyflg;
+#else /* !ENABLE_FILEMON */
+static int qflg, ttyflg;
+#endif /* ENABLE_FILEMON */
+static int usesleep, rawout;
+
+static struct termios tt;
+
+static void done(int) __dead2;
+static void doshell(char **);
+static void fail(void);
+static void finish(void);
+static void record(FILE *, char *, size_t, int);
+static void consume(FILE *, off_t, char *, int);
+static void playback(FILE *) __dead2;
+static void usage(void);
+
+int
+main(int argc, char *argv[])
+{
+ int cc;
+ struct termios rtt, stt;
+ struct winsize win;
+ struct timeval tv, *tvp;
+ time_t tvec, start;
+ char obuf[BUFSIZ];
+ char ibuf[BUFSIZ];
+ fd_set rfd;
+ int aflg, Fflg, kflg, pflg, ch, k, n;
+ int flushtime, readstdin;
+#ifdef ENABLE_FILEMON
+ int fm_fd, fm_log;
+#endif /* ENABLE_FILEMON */
+
+ aflg = Fflg = kflg = pflg = 0;
+ usesleep = 1;
+ rawout = 0;
+ flushtime = 30;
+#ifdef ENABLE_FILEMON
+ fm_fd = -1; /* Shut up stupid "may be used uninitialized" GCC
+ warning. (not needed w/clang) */
+#endif /* ENABLE_FILEMON */
+
+#ifdef ENABLE_FILEMON
+ while ((ch = getopt(argc, argv, "adFfkpqrt:")) != -1)
+#else /* !ENABLE_FILEMON */
+ while ((ch = getopt(argc, argv, "adFkpqrt:")) != -1)
+#endif /* ENABLE_FILEMON */
+ switch(ch) {
+ case 'a':
+ aflg = 1;
+ break;
+ case 'd':
+ usesleep = 0;
+ break;
+ case 'F':
+ Fflg = 1;
+ break;
+#ifdef ENABLE_FILEMON
+ case 'f':
+ fflg = 1;
+ break;
+#endif /* ENABLE_FILEMON */
+ case 'k':
+ kflg = 1;
+ break;
+ case 'p':
+ pflg = 1;
+ break;
+ case 'q':
+ qflg = 1;
+ break;
+ case 'r':
+ rawout = 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, pflg ? "r" : aflg ? "a" : "w")) == NULL)
+ err(1, "%s", fname);
+
+#ifdef ENABLE_FILEMON
+ if (fflg) {
+ asprintf(&fmfname, "%s.filemon", fname);
+ if (!fmfname)
+ err(1, "%s.filemon", fname);
+ if ((fm_fd = open("/dev/filemon", O_RDWR)) == -1)
+ err(1, "open(\"/dev/filemon\", O_RDWR)");
+ if ((fm_log = open(fmfname, O_WRONLY | O_CREAT | O_TRUNC,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH)) == -1)
+ err(1, "open(%s)", fmfname);
+ if (ioctl(fm_fd, FILEMON_SET_FD, &fm_log) < 0)
+ err(1, "Cannot set filemon log file descriptor");
+
+ /* Set up these two fd's to close on exec. */
+ (void)fcntl(fm_fd, F_SETFD, FD_CLOEXEC);
+ (void)fcntl(fm_log, F_SETFD, FD_CLOEXEC);
+ }
+#endif /* ENABLE_FILEMON */
+
+ if (pflg)
+ playback(fscript);
+
+ 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 (rawout)
+ record(fscript, NULL, 0, 's');
+
+ if (!qflg) {
+ tvec = time(NULL);
+ (void)printf("Script started, output file is %s\n", fname);
+ if (!rawout) {
+ (void)fprintf(fscript, "Script started on %s",
+ ctime(&tvec));
+ if (argv[0]) {
+ fprintf(fscript, "command: ");
+ for (k = 0 ; argv[k] ; ++k)
+ fprintf(fscript, "%s%s", k ? " " : "",
+ argv[k]);
+ fprintf(fscript, "\n");
+ }
+ }
+ fflush(fscript);
+#ifdef ENABLE_FILEMON
+ if (fflg) {
+ (void)printf("Filemon started, output file is %s\n",
+ fmfname);
+ }
+#endif /* ENABLE_FILEMON */
+ }
+ 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);
+
+#ifdef ENABLE_FILEMON
+ if (fflg && ioctl(fm_fd, FILEMON_SET_PID, &child) < 0)
+ err(1, "Cannot set filemon PID");
+#endif /* ENABLE_FILEMON */
+
+ start = tvec = time(0);
+ readstdin = 1;
+ for (;;) {
+ FD_ZERO(&rfd);
+ FD_SET(master, &rfd);
+ if (readstdin)
+ FD_SET(STDIN_FILENO, &rfd);
+ if (!readstdin && ttyflg) {
+ tv.tv_sec = 1;
+ tv.tv_usec = 0;
+ tvp = &tv;
+ readstdin = 1;
+ } else if (flushtime > 0) {
+ tv.tv_sec = flushtime - (tvec - start);
+ tv.tv_usec = 0;
+ tvp = &tv;
+ } else {
+ tvp = NULL;
+ }
+ 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) {
+ if (tcgetattr(master, &stt) == 0 &&
+ (stt.c_lflag & ICANON) != 0) {
+ (void)write(master, &stt.c_cc[VEOF], 1);
+ }
+ readstdin = 0;
+ }
+ if (cc > 0) {
+ if (rawout)
+ record(fscript, ibuf, cc, 'i');
+ (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);
+ if (rawout)
+ record(fscript, obuf, cc, 'o');
+ else
+ (void)fwrite(obuf, 1, cc, fscript);
+ }
+ tvec = time(0);
+ if (tvec - start >= flushtime) {
+ fflush(fscript);
+ start = tvec;
+ }
+ if (Fflg)
+ fflush(fscript);
+ }
+ finish();
+ done(0);
+}
+
+static void
+usage(void)
+{
+ (void)fprintf(stderr,
+#ifdef ENABLE_FILEMON
+ "usage: script [-adfkpqr] [-t time] [file [command ...]]\n");
+#else /* !ENABLE_FILEMON */
+ "usage: script [-adkpqr] [-t time] [file [command ...]]\n");
+#endif /* ENABLE_FILEMON */
+ exit(1);
+}
+
+static 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);
+ }
+}
+
+static void
+doshell(char **av)
+{
+ const char *shell;
+
+ shell = getenv("SHELL");
+ if (shell == NULL)
+ shell = _PATH_BSHELL;
+
+ (void)close(master);
+ (void)fclose(fscript);
+ free(fmfname);
+ login_tty(slave);
+ setenv("SCRIPT", fname, 1);
+ if (av[0]) {
+ execvp(av[0], av);
+ warn("%s", av[0]);
+ } else {
+ execl(shell, shell, "-i", (char *)NULL);
+ warn("%s", shell);
+ }
+ fail();
+}
+
+static void
+fail(void)
+{
+ (void)kill(0, SIGTERM);
+ done(1);
+}
+
+static void
+done(int eno)
+{
+ time_t tvec;
+
+ if (ttyflg)
+ (void)tcsetattr(STDIN_FILENO, TCSAFLUSH, &tt);
+ tvec = time(NULL);
+ if (rawout)
+ record(fscript, NULL, 0, 'e');
+ if (!qflg) {
+ if (!rawout)
+ (void)fprintf(fscript,"\nScript done on %s",
+ ctime(&tvec));
+ (void)printf("\nScript done, output file is %s\n", fname);
+#ifdef ENABLE_FILEMON
+ if (fflg) {
+ (void)printf("Filemon done, output file is %s\n",
+ fmfname);
+ }
+#endif /* ENABLE_FILEMON */
+ }
+ (void)fclose(fscript);
+ (void)close(master);
+ exit(eno);
+}
+
+static void
+record(FILE *fp, char *buf, size_t cc, int direction)
+{
+ struct iovec iov[2];
+ struct stamp stamp;
+ struct timeval tv;
+
+ (void)gettimeofday(&tv, NULL);
+ stamp.scr_len = cc;
+ stamp.scr_sec = tv.tv_sec;
+ stamp.scr_usec = tv.tv_usec;
+ stamp.scr_direction = direction;
+ iov[0].iov_len = sizeof(stamp);
+ iov[0].iov_base = &stamp;
+ iov[1].iov_len = cc;
+ iov[1].iov_base = buf;
+ if (writev(fileno(fp), &iov[0], 2) == -1)
+ err(1, "writev");
+}
+
+static void
+consume(FILE *fp, off_t len, char *buf, int reg)
+{
+ size_t l;
+
+ if (reg) {
+ if (fseeko(fp, len, SEEK_CUR) == -1)
+ err(1, NULL);
+ }
+ else {
+ while (len > 0) {
+ l = MIN(DEF_BUF, len);
+ if (fread(buf, sizeof(char), l, fp) != l)
+ err(1, "cannot read buffer");
+ len -= l;
+ }
+ }
+}
+
+#ifdef __APPLE__
+#define bswap32 OSSwapInt32
+#define bswap64 OSSwapInt64
+#endif /* __APPLE__ */
+#define swapstamp(stamp) do { \
+ if (stamp.scr_direction > 0xff) { \
+ stamp.scr_len = bswap64(stamp.scr_len); \
+ stamp.scr_sec = bswap64(stamp.scr_sec); \
+ stamp.scr_usec = bswap32(stamp.scr_usec); \
+ stamp.scr_direction = bswap32(stamp.scr_direction); \
+ } \
+} while (0/*CONSTCOND*/)
+
+static void
+playback(FILE *fp)
+{
+ struct timespec tsi, tso;
+ struct stamp stamp;
+ struct stat pst;
+ char buf[DEF_BUF];
+ off_t nread, save_len;
+ size_t l;
+ time_t tclock;
+ int reg;
+
+ if (fstat(fileno(fp), &pst) == -1)
+ err(1, "fstat failed");
+
+ reg = S_ISREG(pst.st_mode);
+
+ for (nread = 0; !reg || nread < pst.st_size; nread += save_len) {
+ if (fread(&stamp, sizeof(stamp), 1, fp) != 1) {
+ if (reg)
+ err(1, "reading playback header");
+ else
+ break;
+ }
+ swapstamp(stamp);
+ save_len = sizeof(stamp);
+
+ if (reg && stamp.scr_len >
+ (uint64_t)(pst.st_size - save_len) - nread)
+ errx(1, "invalid stamp");
+
+ save_len += stamp.scr_len;
+ tclock = stamp.scr_sec;
+ tso.tv_sec = stamp.scr_sec;
+ tso.tv_nsec = stamp.scr_usec * 1000;
+
+ switch (stamp.scr_direction) {
+ case 's':
+ if (!qflg)
+ (void)printf("Script started on %s",
+ ctime(&tclock));
+ tsi = tso;
+ (void)consume(fp, stamp.scr_len, buf, reg);
+ break;
+ case 'e':
+ if (!qflg)
+ (void)printf("\nScript done on %s",
+ ctime(&tclock));
+ (void)consume(fp, stamp.scr_len, buf, reg);
+ break;
+ case 'i':
+ /* throw input away */
+ (void)consume(fp, stamp.scr_len, buf, reg);
+ break;
+ case 'o':
+ tsi.tv_sec = tso.tv_sec - tsi.tv_sec;
+ tsi.tv_nsec = tso.tv_nsec - tsi.tv_nsec;
+ if (tsi.tv_nsec < 0) {
+ tsi.tv_sec -= 1;
+ tsi.tv_nsec += 1000000000;
+ }
+ if (usesleep)
+ (void)nanosleep(&tsi, NULL);
+ tsi = tso;
+ while (stamp.scr_len > 0) {
+ l = MIN(DEF_BUF, stamp.scr_len);
+ if (fread(buf, sizeof(char), l, fp) != l)
+ err(1, "cannot read buffer");
+
+ (void)write(STDOUT_FILENO, buf, l);
+ stamp.scr_len -= l;
+ }
+ break;
+ default:
+ errx(1, "invalid direction");
+ }
+ }
+ (void)fclose(fp);
+ exit(0);
+}
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