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 <tzfile.h> 59 #include <unistd.h> 60 61 FILE *fscript; 62 int master, slave; 63 int child, subchild; 64 int outcc; 65 char *fname; 66 67 struct termios tt; 68 69 __dead void done __P((void)); 70 void dooutput __P((void)); 71 void doshell __P((void)); 72 void err __P((const char *, ...)); 73 void fail __P((void)); 74 void finish __P((int)); 75 void scriptflush __P((int)); 76 77 int 78 main(argc, argv) 79 int argc; 80 char *argv[]; 81 { 82 register int cc; 83 struct termios rtt; 84 struct winsize win; 85 int aflg, ch; 86 char ibuf[BUFSIZ]; 87 88 aflg = 0; 89 while ((ch = getopt(argc, argv, "a")) != EOF) 90 switch(ch) { 91 case 'a': 92 aflg = 1; 93 break; 94 case '?': 95 default: 96 (void)fprintf(stderr, "usage: script [-a] [file]\n"); 97 exit(1); 98 } 99 argc -= optind; 100 argv += optind; 101 102 if (argc > 0) 103 fname = argv[0]; 104 else 105 fname = "typescript"; 106 107 if ((fscript = fopen(fname, aflg ? "a" : "w")) == NULL) 108 err("%s: %s", fname, strerror(errno)); 109 110 (void)tcgetattr(STDIN_FILENO, &tt); 111 (void)ioctl(STDIN_FILENO, TIOCGWINSZ, &win); 112 if (openpty(&master, &slave, NULL, &tt, &win) == -1) 113 err("openpty: %s", strerror(errno)); 114 115 (void)printf("Script started, output file is %s\n", fname); 116 rtt = tt; 117 cfmakeraw(&rtt); 118 rtt.c_lflag &= ~ECHO; 119 (void)tcsetattr(STDIN_FILENO, TCSAFLUSH, &rtt); 120 121 (void)signal(SIGCHLD, finish); 122 child = fork(); 123 if (child < 0) { 124 perror("fork"); 125 fail(); 126 } 127 if (child == 0) { 128 subchild = child = fork(); 129 if (child < 0) { 130 perror("fork"); 131 fail(); 132 } 133 if (child) 134 dooutput(); 135 else 136 doshell(); 137 } 138 139 (void)fclose(fscript); 140 while ((cc = read(STDIN_FILENO, ibuf, BUFSIZ)) > 0) 141 (void)write(master, ibuf, cc); 142 done(); 143 } 144 145 void 146 finish(signo) 147 int signo; 148 { 149 register int die, pid; 150 union wait status; 151 152 die = 0; 153 while ((pid = wait3((int *)&status, WNOHANG, 0)) > 0) 154 if (pid == child) 155 die = 1; 156 157 if (die) 158 done(); 159 } 160 161 void 162 dooutput() 163 { 164 struct itimerval value; 165 register int cc; 166 time_t tvec; 167 char obuf[BUFSIZ]; 168 169 (void)close(STDIN_FILENO); 170 tvec = time(NULL); 171 (void)fprintf(fscript, "Script started on %s", ctime(&tvec)); 172 173 (void)signal(SIGALRM, scriptflush); 174 value.it_interval.tv_sec = SECSPERMIN / 2; 175 value.it_interval.tv_usec = 0; 176 value.it_value = value.it_interval; 177 (void)setitimer(ITIMER_REAL, &value, NULL); 178 for (;;) { 179 cc = read(master, obuf, sizeof (obuf)); 180 if (cc <= 0) 181 break; 182 (void)write(1, obuf, cc); 183 (void)fwrite(obuf, 1, cc, fscript); 184 outcc += cc; 185 } 186 done(); 187 } 188 189 void 190 scriptflush(signo) 191 int signo; 192 { 193 if (outcc) { 194 (void)fflush(fscript); 195 outcc = 0; 196 } 197 } 198 199 void 200 doshell() 201 { 202 char *shell; 203 204 shell = getenv("SHELL"); 205 if (shell == NULL) 206 shell = _PATH_BSHELL; 207 208 (void)close(master); 209 (void)fclose(fscript); 210 login_tty(slave); 211 execl(shell, "sh", "-i", NULL); 212 perror(shell); 213 fail(); 214 } 215 216 void 217 fail() 218 { 219 220 (void)kill(0, SIGTERM); 221 done(); 222 } 223 224 void 225 done() 226 { 227 time_t tvec; 228 229 if (subchild) { 230 tvec = time(NULL); 231 (void)fprintf(fscript,"\nScript done on %s", ctime(&tvec)); 232 (void)fclose(fscript); 233 (void)close(master); 234 } else { 235 (void)tcsetattr(STDIN_FILENO, TCSAFLUSH, &tt); 236 (void)printf("Script done, output file is %s\n", fname); 237 } 238 exit(0); 239 } 240 241 #if __STDC__ 242 #include <stdarg.h> 243 #else 244 #include <varargs.h> 245 #endif 246 247 void 248 #if __STDC__ 249 err(const char *fmt, ...) 250 #else 251 err(fmt, va_alist) 252 char *fmt; 253 va_dcl 254 #endif 255 { 256 va_list ap; 257 #if __STDC__ 258 va_start(ap, fmt); 259 #else 260 va_start(ap); 261 #endif 262 (void)fprintf(stderr, "script: "); 263 (void)vfprintf(stderr, fmt, ap); 264 va_end(ap); 265 (void)fprintf(stderr, "\n"); 266 exit(1); 267 /* NOTREACHED */ 268 } 269