| 1 | /* |
| 2 | * Copyright (c) 1980, 1992, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. |
| 4 | * |
| 5 | * %sccs.include.redist.c% |
| 6 | */ |
| 7 | |
| 8 | #ifndef lint |
| 9 | static char copyright[] = |
| 10 | "@(#) Copyright (c) 1980, 1992, 1993\n\ |
| 11 | The Regents of the University of California. All rights reserved.\n"; |
| 12 | #endif /* not lint */ |
| 13 | |
| 14 | #ifndef lint |
| 15 | static char sccsid[] = "@(#)script.c 8.1 (Berkeley) %G%"; |
| 16 | #endif /* not lint */ |
| 17 | |
| 18 | #include <sys/types.h> |
| 19 | #include <sys/wait.h> |
| 20 | #include <sys/stat.h> |
| 21 | #include <sys/ioctl.h> |
| 22 | #include <sys/time.h> |
| 23 | |
| 24 | #include <errno.h> |
| 25 | #include <fcntl.h> |
| 26 | #include <paths.h> |
| 27 | #include <signal.h> |
| 28 | #include <stdio.h> |
| 29 | #include <stdlib.h> |
| 30 | #include <string.h> |
| 31 | #include <termios.h> |
| 32 | #include <tzfile.h> |
| 33 | #include <unistd.h> |
| 34 | |
| 35 | FILE *fscript; |
| 36 | int master, slave; |
| 37 | int child, subchild; |
| 38 | int outcc; |
| 39 | char *fname; |
| 40 | |
| 41 | struct termios tt; |
| 42 | |
| 43 | __dead void done __P((void)); |
| 44 | void dooutput __P((void)); |
| 45 | void doshell __P((void)); |
| 46 | void err __P((const char *, ...)); |
| 47 | void fail __P((void)); |
| 48 | void finish __P((int)); |
| 49 | void scriptflush __P((int)); |
| 50 | |
| 51 | int |
| 52 | main(argc, argv) |
| 53 | int argc; |
| 54 | char *argv[]; |
| 55 | { |
| 56 | register int cc; |
| 57 | struct termios rtt; |
| 58 | struct winsize win; |
| 59 | int aflg, ch; |
| 60 | char ibuf[BUFSIZ]; |
| 61 | |
| 62 | aflg = 0; |
| 63 | while ((ch = getopt(argc, argv, "a")) != EOF) |
| 64 | switch(ch) { |
| 65 | case 'a': |
| 66 | aflg = 1; |
| 67 | break; |
| 68 | case '?': |
| 69 | default: |
| 70 | (void)fprintf(stderr, "usage: script [-a] [file]\n"); |
| 71 | exit(1); |
| 72 | } |
| 73 | argc -= optind; |
| 74 | argv += optind; |
| 75 | |
| 76 | if (argc > 0) |
| 77 | fname = argv[0]; |
| 78 | else |
| 79 | fname = "typescript"; |
| 80 | |
| 81 | if ((fscript = fopen(fname, aflg ? "a" : "w")) == NULL) |
| 82 | err("%s: %s", fname, strerror(errno)); |
| 83 | |
| 84 | (void)tcgetattr(STDIN_FILENO, &tt); |
| 85 | (void)ioctl(STDIN_FILENO, TIOCGWINSZ, &win); |
| 86 | if (openpty(&master, &slave, NULL, &tt, &win) == -1) |
| 87 | err("openpty: %s", strerror(errno)); |
| 88 | |
| 89 | (void)printf("Script started, output file is %s\n", fname); |
| 90 | rtt = tt; |
| 91 | cfmakeraw(&rtt); |
| 92 | rtt.c_lflag &= ~ECHO; |
| 93 | (void)tcsetattr(STDIN_FILENO, TCSAFLUSH, &rtt); |
| 94 | |
| 95 | (void)signal(SIGCHLD, finish); |
| 96 | child = fork(); |
| 97 | if (child < 0) { |
| 98 | perror("fork"); |
| 99 | fail(); |
| 100 | } |
| 101 | if (child == 0) { |
| 102 | subchild = child = fork(); |
| 103 | if (child < 0) { |
| 104 | perror("fork"); |
| 105 | fail(); |
| 106 | } |
| 107 | if (child) |
| 108 | dooutput(); |
| 109 | else |
| 110 | doshell(); |
| 111 | } |
| 112 | |
| 113 | (void)fclose(fscript); |
| 114 | while ((cc = read(STDIN_FILENO, ibuf, BUFSIZ)) > 0) |
| 115 | (void)write(master, ibuf, cc); |
| 116 | done(); |
| 117 | } |
| 118 | |
| 119 | void |
| 120 | finish(signo) |
| 121 | int signo; |
| 122 | { |
| 123 | register int die, pid; |
| 124 | union wait status; |
| 125 | |
| 126 | die = 0; |
| 127 | while ((pid = wait3((int *)&status, WNOHANG, 0)) > 0) |
| 128 | if (pid == child) |
| 129 | die = 1; |
| 130 | |
| 131 | if (die) |
| 132 | done(); |
| 133 | } |
| 134 | |
| 135 | void |
| 136 | dooutput() |
| 137 | { |
| 138 | struct itimerval value; |
| 139 | register int cc; |
| 140 | time_t tvec; |
| 141 | char obuf[BUFSIZ]; |
| 142 | |
| 143 | (void)close(STDIN_FILENO); |
| 144 | tvec = time(NULL); |
| 145 | (void)fprintf(fscript, "Script started on %s", ctime(&tvec)); |
| 146 | |
| 147 | (void)signal(SIGALRM, scriptflush); |
| 148 | value.it_interval.tv_sec = SECSPERMIN / 2; |
| 149 | value.it_interval.tv_usec = 0; |
| 150 | value.it_value = value.it_interval; |
| 151 | (void)setitimer(ITIMER_REAL, &value, NULL); |
| 152 | for (;;) { |
| 153 | cc = read(master, obuf, sizeof (obuf)); |
| 154 | if (cc <= 0) |
| 155 | break; |
| 156 | (void)write(1, obuf, cc); |
| 157 | (void)fwrite(obuf, 1, cc, fscript); |
| 158 | outcc += cc; |
| 159 | } |
| 160 | done(); |
| 161 | } |
| 162 | |
| 163 | void |
| 164 | scriptflush(signo) |
| 165 | int signo; |
| 166 | { |
| 167 | if (outcc) { |
| 168 | (void)fflush(fscript); |
| 169 | outcc = 0; |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | void |
| 174 | doshell() |
| 175 | { |
| 176 | char *shell; |
| 177 | |
| 178 | shell = getenv("SHELL"); |
| 179 | if (shell == NULL) |
| 180 | shell = _PATH_BSHELL; |
| 181 | |
| 182 | (void)close(master); |
| 183 | (void)fclose(fscript); |
| 184 | login_tty(slave); |
| 185 | execl(shell, "sh", "-i", NULL); |
| 186 | perror(shell); |
| 187 | fail(); |
| 188 | } |
| 189 | |
| 190 | void |
| 191 | fail() |
| 192 | { |
| 193 | |
| 194 | (void)kill(0, SIGTERM); |
| 195 | done(); |
| 196 | } |
| 197 | |
| 198 | void |
| 199 | done() |
| 200 | { |
| 201 | time_t tvec; |
| 202 | |
| 203 | if (subchild) { |
| 204 | tvec = time(NULL); |
| 205 | (void)fprintf(fscript,"\nScript done on %s", ctime(&tvec)); |
| 206 | (void)fclose(fscript); |
| 207 | (void)close(master); |
| 208 | } else { |
| 209 | (void)tcsetattr(STDIN_FILENO, TCSAFLUSH, &tt); |
| 210 | (void)printf("Script done, output file is %s\n", fname); |
| 211 | } |
| 212 | exit(0); |
| 213 | } |
| 214 | |
| 215 | #if __STDC__ |
| 216 | #include <stdarg.h> |
| 217 | #else |
| 218 | #include <varargs.h> |
| 219 | #endif |
| 220 | |
| 221 | void |
| 222 | #if __STDC__ |
| 223 | err(const char *fmt, ...) |
| 224 | #else |
| 225 | err(fmt, va_alist) |
| 226 | char *fmt; |
| 227 | va_dcl |
| 228 | #endif |
| 229 | { |
| 230 | va_list ap; |
| 231 | #if __STDC__ |
| 232 | va_start(ap, fmt); |
| 233 | #else |
| 234 | va_start(ap); |
| 235 | #endif |
| 236 | (void)fprintf(stderr, "script: "); |
| 237 | (void)vfprintf(stderr, fmt, ap); |
| 238 | va_end(ap); |
| 239 | (void)fprintf(stderr, "\n"); |
| 240 | exit(1); |
| 241 | /* NOTREACHED */ |
| 242 | } |