X-Git-Url: https://git.saurik.com/apple/shell_cmds.git/blobdiff_plain/e1a085bab7df5bb0af9b495e350271357a7cd388..b6d8bf77ecd750be7758113da9f38b27bfecfc17:/script/script.c diff --git a/script/script.c b/script/script.c index 32d80f3..90e895e 100644 --- a/script/script.c +++ b/script/script.c @@ -1,4 +1,5 @@ /* + * Copyright (c) 2010, 2012 David E. O'Brien * Copyright (c) 1980, 1992, 1993 * The Regents of the University of California. All rights reserved. * @@ -10,10 +11,6 @@ * 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. @@ -31,32 +28,39 @@ * SUCH DAMAGE. */ -#include - -__FBSDID("$FreeBSD: src/usr.bin/script/script.c,v 1.24 2004/02/15 17:30:13 cperciva Exp $"); - +#include +__FBSDID("$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 #include #include #include #include +#include +#ifdef __APPLE__ +#include +#else +#include +#endif +#ifdef ENABLE_FILEMON +#include +#endif /* ENABLE_FILEMON */ #include #include #include -#ifndef __APPLE__ +#ifdef __APPLE__ +#include +#else #include -#endif /* !__APPLE__ */ +#endif #include #include #include @@ -64,23 +68,37 @@ static const char sccsid[] = "@(#)script.c 8.1 (Berkeley) 6/6/93"; #include #include #include -#ifdef __APPLE__ -#include -#endif /* __APPLE__ */ -FILE *fscript; -int master, slave; -int child; -const char *fname; -int qflg, ttyflg; +#define DEF_BUF 65536 -struct termios tt; +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) */ +}; -void done(int) __dead2; -void dooutput(void); -void doshell(char **); -void fail(void); -void finish(void); +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 @@ -89,26 +107,58 @@ 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; + 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 */ - aflg = kflg = 0; - while ((ch = getopt(argc, argv, "aqkt:")) != -1) +#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 'q': - qflg = 1; + 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) @@ -128,10 +178,32 @@ main(int argc, char *argv[]) } else fname = "typescript"; - if ((fscript = fopen(fname, aflg ? "a" : "w")) == NULL) + if ((fscript = fopen(fname, pflg ? "r" : aflg ? "a" : "w")) == NULL) err(1, "%s", fname); - if (ttyflg = isatty(STDIN_FILENO)) { +#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) @@ -143,11 +215,30 @@ main(int argc, char *argv[]) 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); - (void)fprintf(fscript, "Script started on %s", ctime(&tvec)); + 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; @@ -163,23 +254,31 @@ main(int argc, char *argv[]) } if (child == 0) doshell(argv); -#ifdef __APPLE__ - (void)close(slave); -#endif /* __APPLE__ */ + close(slave); - if (flushtime > 0) - tvp = &tv; - else - tvp = NULL; +#ifdef ENABLE_FILEMON + if (fflg && ioctl(fm_fd, FILEMON_SET_PID, &child) < 0) + err(1, "Cannot set filemon PID"); +#endif /* ENABLE_FILEMON */ - start = time(0); - FD_ZERO(&rfd); + start = tvec = time(0); + readstdin = 1; for (;;) { + FD_ZERO(&rfd); FD_SET(master, &rfd); - FD_SET(STDIN_FILENO, &rfd); - if (flushtime > 0) { - tv.tv_sec = flushtime; + 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) @@ -188,9 +287,16 @@ main(int argc, char *argv[]) cc = read(STDIN_FILENO, ibuf, BUFSIZ); if (cc < 0) break; - if (cc == 0) - (void)write(master, ibuf, 0); + 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)) { @@ -203,13 +309,18 @@ main(int argc, char *argv[]) if (cc <= 0) break; (void)write(STDOUT_FILENO, obuf, cc); - (void)fwrite(obuf, 1, cc, fscript); + 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); @@ -219,33 +330,31 @@ static void usage(void) { (void)fprintf(stderr, - "usage: script [-akq] [-t time] [file [command ...]]\n"); +#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); } -void +static void finish(void) { - pid_t pid; - int die, e, status; - - die = e = 0; - while ((pid = wait3(&status, WNOHANG, 0)) > 0) - if (pid == child) { - die = 1; - if (WIFEXITED(status)) - e = WEXITSTATUS(status); - else if (WIFSIGNALED(status)) - e = WTERMSIG(status); - else /* can't happen */ - e = 1; - } + int e, status; - if (die) + 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 +static void doshell(char **av) { const char *shell; @@ -256,7 +365,9 @@ doshell(char **av) (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]); @@ -267,14 +378,14 @@ doshell(char **av) fail(); } -void +static void fail(void) { (void)kill(0, SIGTERM); done(1); } -void +static void done(int eno) { time_t tvec; @@ -282,11 +393,154 @@ done(int eno) if (ttyflg) (void)tcsetattr(STDIN_FILENO, TCSAFLUSH, &tt); tvec = time(NULL); + if (rawout) + record(fscript, NULL, 0, 'e'); if (!qflg) { - (void)fprintf(fscript,"\nScript done on %s", ctime(&tvec)); + 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); +}