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Annotation of coherent/g/usr/bin/script/server.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * File:       server.c
                      3:  *
                      4:  * Purpose:    main program for recording process
                      5:  *
                      6:  * $Log:       server.c,v $
                      7:  * Revision 1.2  92/06/15  10:04:57  bin
                      8:  * *** empty log message ***
                      9:  * 
                     10:  */
                     11: 
                     12: /*
                     13:  * Includes.
                     14:  */
                     15: #include <stdio.h>
                     16: 
                     17: /*
                     18:  * Definitions.
                     19:  *     Constants.
                     20:  *     Macros with argument lists.
                     21:  *     Typedefs.
                     22:  *     Enums.
                     23:  */
                     24: 
                     25: typedef unsigned char uchar;
                     26: typedef unsigned int  uint;
                     27: typedef unsigned long ulong;
                     28: 
                     29: /*
                     30:  * Functions.
                     31:  *     Import Functions.
                     32:  *     Export Functions.
                     33:  *     Local Functions.
                     34:  */
                     35: main();
                     36: 
                     37: /*
                     38:  * Global Data.
                     39:  *     Import Variables.
                     40:  *     Export Variables.
                     41:  *     Local Variables.
                     42:  */
                     43: 
                     44: /*
                     45:  * main()
                     46:  *
                     47:  * Usage is script [-l logfile] [command]
                     48:  *
                     49:  * All output from the specified command, including echoing of user
                     50:  * input, is recorded to the logfile.
                     51:  *
                     52:  * "logfile" defaults to L.pid, where "pid" is the number of the
                     53:  * recording process.
                     54:  *
                     55:  * "command" defaults to the whatever environment variable SHELL
                     56:  * specifies, and to "/bin/sh" if SHELL is not set.
                     57:  */
                     58: main(argc, argv, envp)
                     59: int argc;
                     60: char ** argv, ** envp;
                     61: {
                     62:        int master_fd, slave_fd, childpid;
                     63:        static char master_pty[32];
                     64:        static char slave_pty[32];
                     65:        static char log_file[60];
                     66:        int argn, n;
                     67: 
                     68:        sprintf(log_file, "Log.%d", getpid());
                     69:        argv++;
                     70:        for (argn = 1; argn < argc; argn++, argv++) {
                     71:                if (strncmp(*argv, "-l", 2) == 0) {
                     72:                        if (strlen(*argv) > 2) {
                     73:                                if (strlen(*argv) < 62)
                     74:                                        strcpy(log_file, *argv + 2);
                     75:                        } else
                     76:                                strcpy(log_file, *++argv);
                     77:                        continue;
                     78:                }
                     79:                break;
                     80:        }
                     81: 
                     82:        if (!isatty(0) || !isatty(1)) {
                     83:                fprintf(stderr, "stdin and stdout must be tty devices\n");
                     84:                exit(1);
                     85:        }
                     86: 
                     87:        if ((master_fd = getpseudotty(master_pty, slave_pty)) < 0) {
                     88:                fprintf(stderr, "can't open master pty\n");
                     89:                exit(1);
                     90:        }
                     91: 
                     92:        if (tty_getmode(0) < 0) {
                     93:                fprintf(stderr, "can't getmode of stdin\n");
                     94:                exit(1);
                     95:        }
                     96: 
                     97:        if ((childpid = fork()) < 0) {
                     98:                fprintf(stderr, "forking error\n");
                     99:                exit(1);
                    100:        }
                    101: 
                    102:        if (childpid == 0) { /* child */
                    103:                setpgrp();
                    104: 
                    105:                if ((slave_fd = open(slave_pty, 2)) < 0) {
                    106:                        fprintf(stderr, "can't open slave pty\n");
                    107:                        exit(1);
                    108:                }
                    109:                close(master_fd);
                    110: 
                    111:                if (tty_setmode(slave_fd) < 0) {
                    112:                        fprintf(stderr, "can't setmode of slave fd\n");
                    113:                        exit(1);
                    114:                }
                    115:                exec_shell(slave_fd, argv, envp);
                    116:        }
                    117: 
                    118:        if (tty_raw(0) < 0) {
                    119:                fprintf(stderr, "tty_raw error on stdin\n");
                    120:                exit(1);
                    121:        }
                    122: 
                    123:        pass_all(master_fd, log_file);
                    124: 
                    125:        if (tty_reset(0) < 0) {
                    126:                fprintf(stderr, "tty_reset error on stdin\n");
                    127:                exit(1);
                    128:        }
                    129: 
                    130:        exit(0);
                    131: }

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