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 * @(#) Copyright (c) 1980, 1992, 1993 The Regents of the University of California. All rights reserved. 34 * @(#)script.c 8.1 (Berkeley) 6/6/93 35 * $FreeBSD: src/usr.bin/script/script.c,v 1.11.2.1 2000/07/20 10:35:21 kris Exp $ 36 * $DragonFly: src/usr.bin/script/script.c,v 1.3 2003/10/04 20:36:50 hmp Exp $ 37 */ 38 39 #include <sys/types.h> 40 #include <sys/wait.h> 41 #include <sys/stat.h> 42 #include <sys/ioctl.h> 43 #include <sys/time.h> 44 45 #include <err.h> 46 #include <errno.h> 47 #include <fcntl.h> 48 #include <libutil.h> 49 #include <paths.h> 50 #include <signal.h> 51 #include <stdio.h> 52 #include <stdlib.h> 53 #include <string.h> 54 #include <termios.h> 55 #include <unistd.h> 56 57 FILE *fscript; 58 int master, slave; 59 int child; 60 char *fname; 61 int qflg; 62 63 struct termios tt; 64 65 void done(int) __dead2; 66 void dooutput(void); 67 void doshell(char **); 68 void fail(void); 69 void finish(void); 70 static void usage(void); 71 72 int 73 main(int argc, char **argv) 74 { 75 register int cc; 76 struct termios rtt, stt; 77 struct winsize win; 78 int aflg, kflg, ch, n; 79 struct timeval tv, *tvp; 80 time_t tvec, start; 81 char obuf[BUFSIZ]; 82 char ibuf[BUFSIZ]; 83 fd_set rfd; 84 int flushtime = 30; 85 int lastc = 1000; 86 87 aflg = kflg = 0; 88 while ((ch = getopt(argc, argv, "aqkt:")) != -1) 89 switch(ch) { 90 case 'a': 91 aflg = 1; 92 break; 93 case 'q': 94 qflg = 1; 95 break; 96 case 'k': 97 kflg = 1; 98 break; 99 case 't': 100 flushtime = atoi(optarg); 101 if (flushtime < 0) 102 err(1, "invalid flush time %d", flushtime); 103 break; 104 case '?': 105 default: 106 usage(); 107 } 108 argc -= optind; 109 argv += optind; 110 111 if (argc > 0) { 112 fname = argv[0]; 113 argv++; 114 argc--; 115 } else 116 fname = "typescript"; 117 118 if ((fscript = fopen(fname, aflg ? "a" : "w")) == NULL) 119 err(1, "%s", fname); 120 121 (void)tcgetattr(STDIN_FILENO, &tt); 122 (void)ioctl(STDIN_FILENO, TIOCGWINSZ, &win); 123 if (openpty(&master, &slave, NULL, &tt, &win) == -1) 124 err(1, "openpty"); 125 126 if (!qflg) { 127 tvec = time(NULL); 128 (void)printf("Script started, output file is %s\n", fname); 129 (void)fprintf(fscript, "Script started on %s", ctime(&tvec)); 130 fflush(fscript); 131 } 132 rtt = tt; 133 cfmakeraw(&rtt); 134 rtt.c_lflag &= ~ECHO; 135 (void)tcsetattr(STDIN_FILENO, TCSAFLUSH, &rtt); 136 137 child = fork(); 138 if (child < 0) { 139 warn("fork"); 140 done(1); 141 } 142 if (child == 0) 143 doshell(argv); 144 145 if (flushtime > 0) 146 tvp = &tv; 147 else 148 tvp = NULL; 149 150 start = time(0); 151 FD_ZERO(&rfd); 152 for (;;) { 153 FD_SET(master, &rfd); 154 FD_SET(STDIN_FILENO, &rfd); 155 if (flushtime > 0) { 156 tv.tv_sec = flushtime; 157 tv.tv_usec = 0; 158 } 159 n = select(master + 1, &rfd, 0, 0, tvp); 160 if (n < 0 && errno != EINTR) 161 break; 162 if (n > 0 && FD_ISSET(STDIN_FILENO, &rfd)) { 163 cc = read(STDIN_FILENO, ibuf, BUFSIZ); 164 if (cc <= 0) 165 break; 166 if (cc > 0) { 167 (void)write(master, ibuf, cc); 168 if (kflg && tcgetattr(master, &stt) >= 0 && 169 ((stt.c_lflag & ECHO) == 0)) { 170 (void)fwrite(ibuf, 1, cc, fscript); 171 } 172 } 173 } 174 if (n > 0 && FD_ISSET(master, &rfd)) { 175 cc = read(master, obuf, sizeof (obuf)); 176 if (cc <= 0) 177 break; 178 (void)write(1, obuf, cc); 179 (void)fwrite(obuf, 1, cc, fscript); 180 } 181 tvec = time(0); 182 if (tvec - start >= flushtime) { 183 fflush(fscript); 184 start = tvec; 185 } 186 } 187 finish(); 188 done(0); 189 } 190 191 static void 192 usage(void) 193 { 194 (void)fprintf(stderr, 195 "usage: script [-a] [-q] [-k] [-t time] [file] [command]\n"); 196 exit(1); 197 } 198 199 void 200 finish(void) 201 { 202 int die, e, pid; 203 union wait status; 204 205 die = e = 0; 206 while ((pid = wait3((int *)&status, WNOHANG, 0)) > 0) 207 if (pid == child) { 208 die = 1; 209 if (WIFEXITED(status)) 210 e = WEXITSTATUS(status); 211 else if (WIFSIGNALED(status)) 212 e = WTERMSIG(status); 213 else /* can't happen */ 214 e = 1; 215 } 216 217 if (die) 218 done(e); 219 } 220 221 void 222 doshell(char **av) 223 { 224 char *shell; 225 226 shell = getenv("SHELL"); 227 if (shell == NULL) 228 shell = _PATH_BSHELL; 229 230 (void)close(master); 231 (void)fclose(fscript); 232 login_tty(slave); 233 if (av[0]) { 234 execvp(av[0], av); 235 warn("%s", av[0]); 236 } else { 237 execl(shell, shell, "-i", NULL); 238 warn("%s", shell); 239 } 240 fail(); 241 } 242 243 void 244 fail(void) 245 { 246 (void)kill(0, SIGTERM); 247 done(1); 248 } 249 250 void 251 done(int eno) 252 { 253 time_t tvec; 254 255 (void)tcsetattr(STDIN_FILENO, TCSAFLUSH, &tt); 256 tvec = time(NULL); 257 if (!qflg) { 258 (void)fprintf(fscript,"\nScript done on %s", ctime(&tvec)); 259 (void)printf("\nScript done, output file is %s\n", fname); 260 } 261 (void)fclose(fscript); 262 (void)close(master); 263 exit(eno); 264 } 265