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 #ifndef lint 35 static const char copyright[] = 36 "@(#) Copyright (c) 1980, 1992, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 #if 0 42 static char sccsid[] = "@(#)script.c 8.1 (Berkeley) 6/6/93"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 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 FILE *fscript; 67 int master, slave; 68 int child; 69 char *fname; 70 int qflg; 71 72 struct termios tt; 73 74 void done __P((int)) __dead2; 75 void dooutput __P((void)); 76 void doshell __P((char **)); 77 void fail __P((void)); 78 void finish __P((void)); 79 static void usage __P((void)); 80 81 int 82 main(argc, argv) 83 int argc; 84 char *argv[]; 85 { 86 register int cc; 87 struct termios rtt, stt; 88 struct winsize win; 89 int aflg, kflg, ch, n; 90 struct timeval tv, *tvp; 91 time_t tvec, start; 92 char obuf[BUFSIZ]; 93 char ibuf[BUFSIZ]; 94 fd_set rfd; 95 int flushtime = 30; 96 97 aflg = kflg = 0; 98 while ((ch = getopt(argc, argv, "aqkt:")) != -1) 99 switch(ch) { 100 case 'a': 101 aflg = 1; 102 break; 103 case 'q': 104 qflg = 1; 105 break; 106 case 'k': 107 kflg = 1; 108 break; 109 case 't': 110 flushtime = atoi(optarg); 111 if (flushtime < 0) 112 err(1, "invalid flush time %d", flushtime); 113 break; 114 case '?': 115 default: 116 usage(); 117 } 118 argc -= optind; 119 argv += optind; 120 121 if (argc > 0) { 122 fname = argv[0]; 123 argv++; 124 argc--; 125 } else 126 fname = "typescript"; 127 128 if ((fscript = fopen(fname, aflg ? "a" : "w")) == NULL) 129 err(1, "%s", fname); 130 131 (void)tcgetattr(STDIN_FILENO, &tt); 132 (void)ioctl(STDIN_FILENO, TIOCGWINSZ, &win); 133 if (openpty(&master, &slave, NULL, &tt, &win) == -1) 134 err(1, "openpty"); 135 136 if (!qflg) { 137 tvec = time(NULL); 138 (void)printf("Script started, output file is %s\n", fname); 139 (void)fprintf(fscript, "Script started on %s", ctime(&tvec)); 140 fflush(fscript); 141 } 142 rtt = tt; 143 cfmakeraw(&rtt); 144 rtt.c_lflag &= ~ECHO; 145 (void)tcsetattr(STDIN_FILENO, TCSAFLUSH, &rtt); 146 147 child = fork(); 148 if (child < 0) { 149 warn("fork"); 150 done(1); 151 } 152 if (child == 0) 153 doshell(argv); 154 155 if (flushtime > 0) 156 tvp = &tv; 157 else 158 tvp = NULL; 159 160 start = time(0); 161 FD_ZERO(&rfd); 162 for (;;) { 163 FD_SET(master, &rfd); 164 FD_SET(STDIN_FILENO, &rfd); 165 if (flushtime > 0) { 166 tv.tv_sec = flushtime; 167 tv.tv_usec = 0; 168 } 169 n = select(master + 1, &rfd, 0, 0, tvp); 170 if (n < 0 && errno != EINTR) 171 break; 172 if (n > 0 && FD_ISSET(STDIN_FILENO, &rfd)) { 173 cc = read(STDIN_FILENO, ibuf, BUFSIZ); 174 if (cc <= 0) 175 break; 176 if (cc > 0) { 177 (void)write(master, ibuf, cc); 178 if (kflg && tcgetattr(master, &stt) >= 0 && 179 ((stt.c_lflag & ECHO) == 0)) { 180 (void)fwrite(ibuf, 1, cc, fscript); 181 } 182 } 183 } 184 if (n > 0 && FD_ISSET(master, &rfd)) { 185 cc = read(master, obuf, sizeof (obuf)); 186 if (cc <= 0) 187 break; 188 (void)write(1, obuf, cc); 189 (void)fwrite(obuf, 1, cc, fscript); 190 } 191 tvec = time(0); 192 if (tvec - start >= flushtime) { 193 fflush(fscript); 194 start = tvec; 195 } 196 } 197 finish(); 198 done(0); 199 } 200 201 static void 202 usage() 203 { 204 (void)fprintf(stderr, 205 "usage: script [-a] [-q] [-k] [-t time] [file] [command]\n"); 206 exit(1); 207 } 208 209 void 210 finish() 211 { 212 int die, e, pid; 213 union wait status; 214 215 die = e = 0; 216 while ((pid = wait3((int *)&status, WNOHANG, 0)) > 0) 217 if (pid == child) { 218 die = 1; 219 if (WIFEXITED(status)) 220 e = WEXITSTATUS(status); 221 else if (WIFSIGNALED(status)) 222 e = WTERMSIG(status); 223 else /* can't happen */ 224 e = 1; 225 } 226 227 if (die) 228 done(e); 229 } 230 231 void 232 doshell(av) 233 char **av; 234 { 235 char *shell; 236 237 shell = getenv("SHELL"); 238 if (shell == NULL) 239 shell = _PATH_BSHELL; 240 241 (void)close(master); 242 (void)fclose(fscript); 243 login_tty(slave); 244 if (av[0]) { 245 execvp(av[0], av); 246 warn("%s", av[0]); 247 } else { 248 execl(shell, shell, "-i", NULL); 249 warn("%s", shell); 250 } 251 fail(); 252 } 253 254 void 255 fail() 256 { 257 (void)kill(0, SIGTERM); 258 done(1); 259 } 260 261 void 262 done(eno) 263 int eno; 264 { 265 time_t tvec; 266 267 (void)tcsetattr(STDIN_FILENO, TCSAFLUSH, &tt); 268 tvec = time(NULL); 269 if (!qflg) { 270 (void)fprintf(fscript,"\nScript done on %s", ctime(&tvec)); 271 (void)printf("\nScript done, output file is %s\n", fname); 272 } 273 (void)fclose(fscript); 274 (void)close(master); 275 exit(eno); 276 } 277