/* * 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. * 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. * * @(#) Copyright (c) 1980, 1992, 1993 The Regents of the University of California. All rights reserved. * @(#)script.c 8.1 (Berkeley) 6/6/93 * $FreeBSD: /usr/local/www/cvsroot/FreeBSD/src/usr.bin/script/script.c,v 1.11.2.2 2004/03/13 09:21:00 cperciva Exp $ * $DragonFly: src/usr.bin/script/script.c,v 1.10 2005/03/16 06:26:49 cpressey Exp $ */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static FILE *fscript; static int master, slave; static const char *fname; static int qflg, ttyflg; struct termios tt; static void done(int) __dead2; static void doshell(char **); static int reap(pid_t); static void usage(void); int 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; pid_t child; aflg = kflg = 0; while ((ch = getopt(argc, argv, "aqkt:")) != -1) { switch(ch) { case 'a': aflg = 1; break; case 'q': qflg = 1; break; case 'k': kflg = 1; break; case 't': flushtime = atoi(optarg); if (flushtime < 0) errx(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, aflg ? "a" : "w")) == NULL) err(1, "%s", fname); 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 (!qflg) { tvec = time(NULL); printf("Script started, output file is %s\n", fname); fprintf(fscript, "Script started on %s", ctime(&tvec)); fflush(fscript); } if (ttyflg) { rtt = tt; cfmakeraw(&rtt); rtt.c_lflag &= ~ECHO; tcsetattr(STDIN_FILENO, TCSAFLUSH, &rtt); } child = fork(); if (child < 0) { warn("fork"); done(1); } if (child == 0) doshell(argv); close(slave); if (flushtime > 0) tvp = &tv; else tvp = NULL; start = time(0); FD_ZERO(&rfd); for (;;) { FD_SET(master, &rfd); FD_SET(STDIN_FILENO, &rfd); if (flushtime > 0) { tv.tv_sec = flushtime; tv.tv_usec = 0; } 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, sizeof(ibuf)); if (cc < 0) break; if (cc == 0) write(master, ibuf, 0); if (cc > 0) { write(master, ibuf, cc); if (kflg && tcgetattr(master, &stt) >= 0 && ((stt.c_lflag & ECHO) == 0)) { fwrite(ibuf, 1, cc, fscript); } } } if (n > 0 && FD_ISSET(master, &rfd)) { cc = read(master, obuf, sizeof(obuf)); if (cc <= 0) break; write(STDOUT_FILENO, obuf, cc); fwrite(obuf, 1, cc, fscript); } tvec = time(0); if (tvec - start >= flushtime) { fflush(fscript); start = tvec; } } done(reap(child)); } static void usage(void) { fprintf(stderr, "usage: script [-a] [-q] [-k] [-t time] [file] [command]\n"); exit(1); } static int reap(pid_t child) { int e; pid_t pid; union wait status; e = 0; while ((pid = wait3((int *)&status, WNOHANG, NULL)) > 0) { if (pid == child) { if (WIFEXITED(status)) e = WEXITSTATUS(status); else if (WIFSIGNALED(status)) e = WTERMSIG(status); else /* can't happen */ e = 1; } } return(e); } static void doshell(char **av) { const char *shell; shell = getenv("SHELL"); if (shell == NULL) shell = _PATH_BSHELL; close(master); fclose(fscript); login_tty(slave); if (av[0] != NULL) { execvp(av[0], av); warn("%s", av[0]); } else { execl(shell, shell, "-i", NULL); warn("%s", shell); } kill(0, SIGTERM); done(1); } static void done(int eno) { time_t tvec; if (ttyflg) tcsetattr(STDIN_FILENO, TCSAFLUSH, &tt); tvec = time(NULL); if (!qflg) { fprintf(fscript,"\nScript done on %s", ctime(&tvec)); printf("\nScript done, output file is '%s'\n", fname); } fclose(fscript); close(master); exit(eno); }