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 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 static char sccsid[] = "@(#)script.c 8.1 (Berkeley) 6/6/93"; 42 #endif /* not lint */ 43 44 #include <sys/types.h> 45 #include <sys/wait.h> 46 #include <sys/stat.h> 47 #include <sys/ioctl.h> 48 #include <sys/time.h> 49 50 #include <errno.h> 51 #include <fcntl.h> 52 #include <paths.h> 53 #include <signal.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <string.h> 57 #include <termios.h> 58 #include <unistd.h> 59 60 FILE *fscript; 61 int master, slave; 62 int child, subchild; 63 int outcc; 64 char *fname; 65 66 struct termios tt; 67 68 void done __P((void)) __dead2; 69 void dooutput __P((void)); 70 void doshell __P((void)); 71 void err __P((const char *, ...)); 72 void fail __P((void)); 73 void finish __P((int)); 74 void scriptflush __P((int)); 75 76 int 77 main(argc, argv) 78 int argc; 79 char *argv[]; 80 { 81 register int cc; 82 struct termios rtt; 83 struct winsize win; 84 int aflg, ch; 85 char ibuf[BUFSIZ]; 86 87 aflg = 0; 88 while ((ch = getopt(argc, argv, "a")) != -1) 89 switch(ch) { 90 case 'a': 91 aflg = 1; 92 break; 93 case '?': 94 default: 95 (void)fprintf(stderr, "usage: script [-a] [file]\n"); 96 exit(1); 97 } 98 argc -= optind; 99 argv += optind; 100 101 if (argc > 0) 102 fname = argv[0]; 103 else 104 fname = "typescript"; 105 106 if ((fscript = fopen(fname, aflg ? "a" : "w")) == NULL) 107 err("%s: %s", fname, strerror(errno)); 108 109 (void)tcgetattr(STDIN_FILENO, &tt); 110 (void)ioctl(STDIN_FILENO, TIOCGWINSZ, &win); 111 if (openpty(&master, &slave, NULL, &tt, &win) == -1) 112 err("openpty: %s", strerror(errno)); 113 114 (void)printf("Script started, output file is %s\n", fname); 115 rtt = tt; 116 cfmakeraw(&rtt); 117 rtt.c_lflag &= ~ECHO; 118 (void)tcsetattr(STDIN_FILENO, TCSAFLUSH, &rtt); 119 120 (void)signal(SIGCHLD, finish); 121 child = fork(); 122 if (child < 0) { 123 perror("fork"); 124 fail(); 125 } 126 if (child == 0) { 127 subchild = child = fork(); 128 if (child < 0) { 129 perror("fork"); 130 fail(); 131 } 132 if (child) 133 dooutput(); 134 else 135 doshell(); 136 } 137 138 (void)fclose(fscript); 139 while ((cc = read(STDIN_FILENO, ibuf, BUFSIZ)) > 0) 140 (void)write(master, ibuf, cc); 141 done(); 142 } 143 144 void 145 finish(signo) 146 int signo; 147 { 148 register int die, pid; 149 union wait status; 150 151 die = 0; 152 while ((pid = wait3((int *)&status, WNOHANG, 0)) > 0) 153 if (pid == child) 154 die = 1; 155 156 if (die) 157 done(); 158 } 159 160 void 161 dooutput() 162 { 163 struct itimerval value; 164 register int cc; 165 time_t tvec; 166 char obuf[BUFSIZ]; 167 168 (void)close(STDIN_FILENO); 169 tvec = time(NULL); 170 (void)fprintf(fscript, "Script started on %s", ctime(&tvec)); 171 172 (void)signal(SIGALRM, scriptflush); 173 value.it_interval.tv_sec = 60 / 2; 174 value.it_interval.tv_usec = 0; 175 value.it_value = value.it_interval; 176 (void)setitimer(ITIMER_REAL, &value, NULL); 177 for (;;) { 178 cc = read(master, obuf, sizeof (obuf)); 179 if (cc <= 0) 180 break; 181 (void)write(1, obuf, cc); 182 (void)fwrite(obuf, 1, cc, fscript); 183 outcc += cc; 184 } 185 done(); 186 } 187 188 void 189 scriptflush(signo) 190 int signo; 191 { 192 if (outcc) { 193 (void)fflush(fscript); 194 outcc = 0; 195 } 196 } 197 198 void 199 doshell() 200 { 201 char *shell; 202 203 shell = getenv("SHELL"); 204 if (shell == NULL) 205 shell = _PATH_BSHELL; 206 207 (void)close(master); 208 (void)fclose(fscript); 209 login_tty(slave); 210 execl(shell, "sh", "-i", NULL); 211 perror(shell); 212 fail(); 213 } 214 215 void 216 fail() 217 { 218 219 (void)kill(0, SIGTERM); 220 done(); 221 } 222 223 void 224 done() 225 { 226 time_t tvec; 227 228 if (subchild) { 229 tvec = time(NULL); 230 (void)fprintf(fscript,"\nScript done on %s", ctime(&tvec)); 231 (void)fclose(fscript); 232 (void)close(master); 233 } else { 234 (void)tcsetattr(STDIN_FILENO, TCSAFLUSH, &tt); 235 (void)printf("Script done, output file is %s\n", fname); 236 } 237 exit(0); 238 } 239 240 #if __STDC__ 241 #include <stdarg.h> 242 #else 243 #include <varargs.h> 244 #endif 245 246 void 247 #if __STDC__ 248 err(const char *fmt, ...) 249 #else 250 err(fmt, va_alist) 251 char *fmt; 252 va_dcl 253 #endif 254 { 255 va_list ap; 256 #if __STDC__ 257 va_start(ap, fmt); 258 #else 259 va_start(ap); 260 #endif 261 (void)fprintf(stderr, "script: "); 262 (void)vfprintf(stderr, fmt, ap); 263 va_end(ap); 264 (void)fprintf(stderr, "\n"); 265 exit(1); 266 /* NOTREACHED */ 267 } 268