1 /* 2 * Copyright (c) 1980, 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include <sys/cdefs.h> 35 36 __FBSDID("$FreeBSD$"); 37 38 #ifndef lint 39 static const char copyright[] = 40 "@(#) Copyright (c) 1980, 1992, 1993\n\ 41 The Regents of the University of California. All rights reserved.\n"; 42 #endif 43 44 #ifndef lint 45 static const char sccsid[] = "@(#)script.c 8.1 (Berkeley) 6/6/93"; 46 #endif 47 48 #include <sys/types.h> 49 #include <sys/wait.h> 50 #include <sys/stat.h> 51 #include <sys/ioctl.h> 52 #include <sys/time.h> 53 54 #include <err.h> 55 #include <errno.h> 56 #include <fcntl.h> 57 #include <libutil.h> 58 #include <paths.h> 59 #include <signal.h> 60 #include <stdio.h> 61 #include <stdlib.h> 62 #include <string.h> 63 #include <termios.h> 64 #include <unistd.h> 65 66 static FILE *fscript; 67 static int master, slave; 68 static int child; 69 static const char *fname; 70 static int qflg, ttyflg; 71 72 static struct termios tt; 73 74 static void done(int) __dead2; 75 static void doshell(char **); 76 static void fail(void); 77 static void finish(void); 78 static void usage(void); 79 80 int 81 main(int argc, char *argv[]) 82 { 83 int cc; 84 struct termios rtt, stt; 85 struct winsize win; 86 int aflg, kflg, ch, n; 87 struct timeval tv, *tvp; 88 time_t tvec, start; 89 char obuf[BUFSIZ]; 90 char ibuf[BUFSIZ]; 91 fd_set rfd; 92 int flushtime = 30; 93 94 aflg = kflg = 0; 95 while ((ch = getopt(argc, argv, "aqkt:")) != -1) 96 switch(ch) { 97 case 'a': 98 aflg = 1; 99 break; 100 case 'q': 101 qflg = 1; 102 break; 103 case 'k': 104 kflg = 1; 105 break; 106 case 't': 107 flushtime = atoi(optarg); 108 if (flushtime < 0) 109 err(1, "invalid flush time %d", flushtime); 110 break; 111 case '?': 112 default: 113 usage(); 114 } 115 argc -= optind; 116 argv += optind; 117 118 if (argc > 0) { 119 fname = argv[0]; 120 argv++; 121 argc--; 122 } else 123 fname = "typescript"; 124 125 if ((fscript = fopen(fname, aflg ? "a" : "w")) == NULL) 126 err(1, "%s", fname); 127 128 if ((ttyflg = isatty(STDIN_FILENO)) != 0) { 129 if (tcgetattr(STDIN_FILENO, &tt) == -1) 130 err(1, "tcgetattr"); 131 if (ioctl(STDIN_FILENO, TIOCGWINSZ, &win) == -1) 132 err(1, "ioctl"); 133 if (openpty(&master, &slave, NULL, &tt, &win) == -1) 134 err(1, "openpty"); 135 } else { 136 if (openpty(&master, &slave, NULL, NULL, NULL) == -1) 137 err(1, "openpty"); 138 } 139 140 if (!qflg) { 141 tvec = time(NULL); 142 (void)printf("Script started, output file is %s\n", fname); 143 (void)fprintf(fscript, "Script started on %s", ctime(&tvec)); 144 fflush(fscript); 145 } 146 if (ttyflg) { 147 rtt = tt; 148 cfmakeraw(&rtt); 149 rtt.c_lflag &= ~ECHO; 150 (void)tcsetattr(STDIN_FILENO, TCSAFLUSH, &rtt); 151 } 152 153 child = fork(); 154 if (child < 0) { 155 warn("fork"); 156 done(1); 157 } 158 if (child == 0) 159 doshell(argv); 160 close(slave); 161 162 if (flushtime > 0) 163 tvp = &tv; 164 else 165 tvp = NULL; 166 167 start = time(0); 168 FD_ZERO(&rfd); 169 for (;;) { 170 FD_SET(master, &rfd); 171 FD_SET(STDIN_FILENO, &rfd); 172 if (flushtime > 0) { 173 tv.tv_sec = flushtime; 174 tv.tv_usec = 0; 175 } 176 n = select(master + 1, &rfd, 0, 0, tvp); 177 if (n < 0 && errno != EINTR) 178 break; 179 if (n > 0 && FD_ISSET(STDIN_FILENO, &rfd)) { 180 cc = read(STDIN_FILENO, ibuf, BUFSIZ); 181 if (cc < 0) 182 break; 183 if (cc == 0) 184 (void)write(master, ibuf, 0); 185 if (cc > 0) { 186 (void)write(master, ibuf, cc); 187 if (kflg && tcgetattr(master, &stt) >= 0 && 188 ((stt.c_lflag & ECHO) == 0)) { 189 (void)fwrite(ibuf, 1, cc, fscript); 190 } 191 } 192 } 193 if (n > 0 && FD_ISSET(master, &rfd)) { 194 cc = read(master, obuf, sizeof (obuf)); 195 if (cc <= 0) 196 break; 197 (void)write(STDOUT_FILENO, obuf, cc); 198 (void)fwrite(obuf, 1, cc, fscript); 199 } 200 tvec = time(0); 201 if (tvec - start >= flushtime) { 202 fflush(fscript); 203 start = tvec; 204 } 205 } 206 finish(); 207 done(0); 208 } 209 210 static void 211 usage(void) 212 { 213 (void)fprintf(stderr, 214 "usage: script [-akq] [-t time] [file [command ...]]\n"); 215 exit(1); 216 } 217 218 static void 219 finish(void) 220 { 221 int e, status; 222 223 if (waitpid(child, &status, 0) == child) { 224 if (WIFEXITED(status)) 225 e = WEXITSTATUS(status); 226 else if (WIFSIGNALED(status)) 227 e = WTERMSIG(status); 228 else /* can't happen */ 229 e = 1; 230 done(e); 231 } 232 } 233 234 static void 235 doshell(char **av) 236 { 237 const char *shell; 238 int k; 239 240 shell = getenv("SHELL"); 241 if (shell == NULL) 242 shell = _PATH_BSHELL; 243 244 if (av[0]) 245 for (k = 0 ; av[k] ; ++k) 246 fprintf(fscript, "%s%s", k ? " " : "", av[k]); 247 fprintf(fscript, "\r\n"); 248 249 (void)close(master); 250 (void)fclose(fscript); 251 login_tty(slave); 252 setenv("SCRIPT", fname, 1); 253 if (av[0]) { 254 execvp(av[0], av); 255 warn("%s", av[0]); 256 } else { 257 execl(shell, shell, "-i", (char *)NULL); 258 warn("%s", shell); 259 } 260 fail(); 261 } 262 263 static void 264 fail(void) 265 { 266 (void)kill(0, SIGTERM); 267 done(1); 268 } 269 270 static void 271 done(int eno) 272 { 273 time_t tvec; 274 275 if (ttyflg) 276 (void)tcsetattr(STDIN_FILENO, TCSAFLUSH, &tt); 277 tvec = time(NULL); 278 if (!qflg) { 279 (void)fprintf(fscript,"\nScript done on %s", ctime(&tvec)); 280 (void)printf("\nScript done, output file is %s\n", fname); 281 } 282 (void)fclose(fscript); 283 (void)close(master); 284 exit(eno); 285 } 286