Annotation of src/usr.bin/tip/tipout.c, Revision 1.1
1.1 ! deraadt 1: /* $NetBSD: tipout.c,v 1.3 1994/12/08 09:31:12 jtc Exp $ */
! 2:
! 3: /*
! 4: * Copyright (c) 1983, 1993
! 5: * The Regents of the University of California. All rights reserved.
! 6: *
! 7: * Redistribution and use in source and binary forms, with or without
! 8: * modification, are permitted provided that the following conditions
! 9: * are met:
! 10: * 1. Redistributions of source code must retain the above copyright
! 11: * notice, this list of conditions and the following disclaimer.
! 12: * 2. Redistributions in binary form must reproduce the above copyright
! 13: * notice, this list of conditions and the following disclaimer in the
! 14: * documentation and/or other materials provided with the distribution.
! 15: * 3. All advertising materials mentioning features or use of this software
! 16: * must display the following acknowledgement:
! 17: * This product includes software developed by the University of
! 18: * California, Berkeley and its contributors.
! 19: * 4. Neither the name of the University nor the names of its contributors
! 20: * may be used to endorse or promote products derived from this software
! 21: * without specific prior written permission.
! 22: *
! 23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
! 24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
! 25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
! 26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
! 27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
! 28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
! 29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
! 30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
! 31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
! 32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
! 33: * SUCH DAMAGE.
! 34: */
! 35:
! 36: #ifndef lint
! 37: #if 0
! 38: static char sccsid[] = "@(#)tipout.c 8.1 (Berkeley) 6/6/93";
! 39: #endif
! 40: static char rcsid[] = "$NetBSD: tipout.c,v 1.3 1994/12/08 09:31:12 jtc Exp $";
! 41: #endif /* not lint */
! 42:
! 43: #include "tip.h"
! 44: /*
! 45: * tip
! 46: *
! 47: * lower fork of tip -- handles passive side
! 48: * reading from the remote host
! 49: */
! 50:
! 51: static jmp_buf sigbuf;
! 52:
! 53: /*
! 54: * TIPOUT wait state routine --
! 55: * sent by TIPIN when it wants to posses the remote host
! 56: */
! 57: void
! 58: intIOT()
! 59: {
! 60:
! 61: write(repdes[1],&ccc,1);
! 62: read(fildes[0], &ccc,1);
! 63: longjmp(sigbuf, 1);
! 64: }
! 65:
! 66: /*
! 67: * Scripting command interpreter --
! 68: * accepts script file name over the pipe and acts accordingly
! 69: */
! 70: void
! 71: intEMT()
! 72: {
! 73: char c, line[256];
! 74: register char *pline = line;
! 75: char reply;
! 76:
! 77: read(fildes[0], &c, 1);
! 78: while (c != '\n') {
! 79: *pline++ = c;
! 80: read(fildes[0], &c, 1);
! 81: }
! 82: *pline = '\0';
! 83: if (boolean(value(SCRIPT)) && fscript != NULL)
! 84: fclose(fscript);
! 85: if (pline == line) {
! 86: boolean(value(SCRIPT)) = FALSE;
! 87: reply = 'y';
! 88: } else {
! 89: if ((fscript = fopen(line, "a")) == NULL)
! 90: reply = 'n';
! 91: else {
! 92: reply = 'y';
! 93: boolean(value(SCRIPT)) = TRUE;
! 94: }
! 95: }
! 96: write(repdes[1], &reply, 1);
! 97: longjmp(sigbuf, 1);
! 98: }
! 99:
! 100: void
! 101: intTERM()
! 102: {
! 103:
! 104: if (boolean(value(SCRIPT)) && fscript != NULL)
! 105: fclose(fscript);
! 106: exit(0);
! 107: }
! 108:
! 109: void
! 110: intSYS()
! 111: {
! 112:
! 113: boolean(value(BEAUTIFY)) = !boolean(value(BEAUTIFY));
! 114: longjmp(sigbuf, 1);
! 115: }
! 116:
! 117: /*
! 118: * ****TIPOUT TIPOUT****
! 119: */
! 120: tipout()
! 121: {
! 122: char buf[BUFSIZ];
! 123: register char *cp;
! 124: register int cnt;
! 125: extern int errno;
! 126: int omask;
! 127:
! 128: signal(SIGINT, SIG_IGN);
! 129: signal(SIGQUIT, SIG_IGN);
! 130: signal(SIGEMT, intEMT); /* attention from TIPIN */
! 131: signal(SIGTERM, intTERM); /* time to go signal */
! 132: signal(SIGIOT, intIOT); /* scripting going on signal */
! 133: signal(SIGHUP, intTERM); /* for dial-ups */
! 134: signal(SIGSYS, intSYS); /* beautify toggle */
! 135: (void) setjmp(sigbuf);
! 136: for (omask = 0;; sigsetmask(omask)) {
! 137: cnt = read(FD, buf, BUFSIZ);
! 138: if (cnt <= 0) {
! 139: /* lost carrier */
! 140: if (cnt < 0 && errno == EIO) {
! 141: sigblock(sigmask(SIGTERM));
! 142: intTERM();
! 143: /*NOTREACHED*/
! 144: }
! 145: continue;
! 146: }
! 147: #define ALLSIGS sigmask(SIGEMT)|sigmask(SIGTERM)|sigmask(SIGIOT)|sigmask(SIGSYS)
! 148: omask = sigblock(ALLSIGS);
! 149: for (cp = buf; cp < buf + cnt; cp++)
! 150: *cp &= 0177;
! 151: write(1, buf, cnt);
! 152: if (boolean(value(SCRIPT)) && fscript != NULL) {
! 153: if (!boolean(value(BEAUTIFY))) {
! 154: fwrite(buf, 1, cnt, fscript);
! 155: continue;
! 156: }
! 157: for (cp = buf; cp < buf + cnt; cp++)
! 158: if ((*cp >= ' ' && *cp <= '~') ||
! 159: any(*cp, value(EXCEPTIONS)))
! 160: putc(*cp, fscript);
! 161: }
! 162: }
! 163: }
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