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Annotation of 43BSDReno/usr.bin/tip/tipout.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted
        !             6:  * provided that: (1) source distributions retain this entire copyright
        !             7:  * notice and comment, and (2) distributions including binaries display
        !             8:  * the following acknowledgement:  ``This product includes software
        !             9:  * developed by the University of California, Berkeley and its contributors''
        !            10:  * in the documentation or other materials provided with the distribution
        !            11:  * and in all advertising materials mentioning features or use of this
        !            12:  * software. Neither the name of the University nor the names of its
        !            13:  * contributors may be used to endorse or promote products derived
        !            14:  * from this software without specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
        !            16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #ifndef lint
        !            21: static char sccsid[] = "@(#)tipout.c   5.3 (Berkeley) 6/1/90";
        !            22: #endif /* not lint */
        !            23: 
        !            24: #include "tip.h"
        !            25: /*
        !            26:  * tip
        !            27:  *
        !            28:  * lower fork of tip -- handles passive side
        !            29:  *  reading from the remote host
        !            30:  */
        !            31: 
        !            32: static jmp_buf sigbuf;
        !            33: 
        !            34: /*
        !            35:  * TIPOUT wait state routine --
        !            36:  *   sent by TIPIN when it wants to posses the remote host
        !            37:  */
        !            38: intIOT()
        !            39: {
        !            40: 
        !            41:        write(repdes[1],&ccc,1);
        !            42:        read(fildes[0], &ccc,1);
        !            43:        longjmp(sigbuf, 1);
        !            44: }
        !            45: 
        !            46: /*
        !            47:  * Scripting command interpreter --
        !            48:  *  accepts script file name over the pipe and acts accordingly
        !            49:  */
        !            50: intEMT()
        !            51: {
        !            52:        char c, line[256];
        !            53:        register char *pline = line;
        !            54:        char reply;
        !            55: 
        !            56:        read(fildes[0], &c, 1);
        !            57:        while (c != '\n') {
        !            58:                *pline++ = c;
        !            59:                read(fildes[0], &c, 1);
        !            60:        }
        !            61:        *pline = '\0';
        !            62:        if (boolean(value(SCRIPT)) && fscript != NULL)
        !            63:                fclose(fscript);
        !            64:        if (pline == line) {
        !            65:                boolean(value(SCRIPT)) = FALSE;
        !            66:                reply = 'y';
        !            67:        } else {
        !            68:                if ((fscript = fopen(line, "a")) == NULL)
        !            69:                        reply = 'n';
        !            70:                else {
        !            71:                        reply = 'y';
        !            72:                        boolean(value(SCRIPT)) = TRUE;
        !            73:                }
        !            74:        }
        !            75:        write(repdes[1], &reply, 1);
        !            76:        longjmp(sigbuf, 1);
        !            77: }
        !            78: 
        !            79: intTERM()
        !            80: {
        !            81: 
        !            82:        if (boolean(value(SCRIPT)) && fscript != NULL)
        !            83:                fclose(fscript);
        !            84:        exit(0);
        !            85: }
        !            86: 
        !            87: intSYS()
        !            88: {
        !            89: 
        !            90:        boolean(value(BEAUTIFY)) = !boolean(value(BEAUTIFY));
        !            91:        longjmp(sigbuf, 1);
        !            92: }
        !            93: 
        !            94: /*
        !            95:  * ****TIPOUT   TIPOUT****
        !            96:  */
        !            97: tipout()
        !            98: {
        !            99:        char buf[BUFSIZ];
        !           100:        register char *cp;
        !           101:        register int cnt;
        !           102:        extern int errno;
        !           103:        int omask;
        !           104: 
        !           105:        signal(SIGINT, SIG_IGN);
        !           106:        signal(SIGQUIT, SIG_IGN);
        !           107:        signal(SIGEMT, intEMT);         /* attention from TIPIN */
        !           108:        signal(SIGTERM, intTERM);       /* time to go signal */
        !           109:        signal(SIGIOT, intIOT);         /* scripting going on signal */
        !           110:        signal(SIGHUP, intTERM);        /* for dial-ups */
        !           111:        signal(SIGSYS, intSYS);         /* beautify toggle */
        !           112:        (void) setjmp(sigbuf);
        !           113:        for (omask = 0;; sigsetmask(omask)) {
        !           114:                cnt = read(FD, buf, BUFSIZ);
        !           115:                if (cnt <= 0) {
        !           116:                        /* lost carrier */
        !           117:                        if (cnt < 0 && errno == EIO) {
        !           118:                                sigblock(sigmask(SIGTERM));
        !           119:                                intTERM();
        !           120:                                /*NOTREACHED*/
        !           121:                        }
        !           122:                        continue;
        !           123:                }
        !           124: #define        ALLSIGS sigmask(SIGEMT)|sigmask(SIGTERM)|sigmask(SIGIOT)|sigmask(SIGSYS)
        !           125:                omask = sigblock(ALLSIGS);
        !           126:                for (cp = buf; cp < buf + cnt; cp++)
        !           127:                        *cp &= 0177;
        !           128:                write(1, buf, cnt);
        !           129:                if (boolean(value(SCRIPT)) && fscript != NULL) {
        !           130:                        if (!boolean(value(BEAUTIFY))) {
        !           131:                                fwrite(buf, 1, cnt, fscript);
        !           132:                                continue;
        !           133:                        }
        !           134:                        for (cp = buf; cp < buf + cnt; cp++)
        !           135:                                if ((*cp >= ' ' && *cp <= '~') ||
        !           136:                                    any(*cp, value(EXCEPTIONS)))
        !           137:                                        putc(*cp, fscript);
        !           138:                }
        !           139:        }
        !           140: }

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