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Diffstat (limited to 'usr.bin/tip/tipout.c')
| -rw-r--r-- | usr.bin/tip/tipout.c | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/usr.bin/tip/tipout.c b/usr.bin/tip/tipout.c new file mode 100644 index 0000000..7288eb8 --- /dev/null +++ b/usr.bin/tip/tipout.c @@ -0,0 +1,158 @@ +/* + * Copyright (c) 1983, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char sccsid[] = "@(#)tipout.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +#include "tip.h" +/* + * tip + * + * lower fork of tip -- handles passive side + * reading from the remote host + */ + +static jmp_buf sigbuf; + +/* + * TIPOUT wait state routine -- + * sent by TIPIN when it wants to posses the remote host + */ +void +intIOT() +{ + + write(repdes[1],&ccc,1); + read(fildes[0], &ccc,1); + longjmp(sigbuf, 1); +} + +/* + * Scripting command interpreter -- + * accepts script file name over the pipe and acts accordingly + */ +void +intEMT() +{ + char c, line[256]; + register char *pline = line; + char reply; + + read(fildes[0], &c, 1); + while (c != '\n') { + *pline++ = c; + read(fildes[0], &c, 1); + } + *pline = '\0'; + if (boolean(value(SCRIPT)) && fscript != NULL) + fclose(fscript); + if (pline == line) { + boolean(value(SCRIPT)) = FALSE; + reply = 'y'; + } else { + if ((fscript = fopen(line, "a")) == NULL) + reply = 'n'; + else { + reply = 'y'; + boolean(value(SCRIPT)) = TRUE; + } + } + write(repdes[1], &reply, 1); + longjmp(sigbuf, 1); +} + +void +intTERM() +{ + + if (boolean(value(SCRIPT)) && fscript != NULL) + fclose(fscript); + exit(0); +} + +void +intSYS() +{ + + boolean(value(BEAUTIFY)) = !boolean(value(BEAUTIFY)); + longjmp(sigbuf, 1); +} + +/* + * ****TIPOUT TIPOUT**** + */ +tipout() +{ + char buf[BUFSIZ]; + register char *cp; + register int cnt; + extern int errno; + int omask; + + signal(SIGINT, SIG_IGN); + signal(SIGQUIT, SIG_IGN); + signal(SIGEMT, intEMT); /* attention from TIPIN */ + signal(SIGTERM, intTERM); /* time to go signal */ + signal(SIGIOT, intIOT); /* scripting going on signal */ + signal(SIGHUP, intTERM); /* for dial-ups */ + signal(SIGSYS, intSYS); /* beautify toggle */ + (void) setjmp(sigbuf); + for (omask = 0;; sigsetmask(omask)) { + cnt = read(FD, buf, BUFSIZ); + if (cnt <= 0) { + /* lost carrier */ + if (cnt < 0 && errno == EIO) { + sigblock(sigmask(SIGTERM)); + intTERM(); + /*NOTREACHED*/ + } + continue; + } +#define ALLSIGS sigmask(SIGEMT)|sigmask(SIGTERM)|sigmask(SIGIOT)|sigmask(SIGSYS) + omask = sigblock(ALLSIGS); + for (cp = buf; cp < buf + cnt; cp++) + *cp &= 0177; + write(1, buf, cnt); + if (boolean(value(SCRIPT)) && fscript != NULL) { + if (!boolean(value(BEAUTIFY))) { + fwrite(buf, 1, cnt, fscript); + continue; + } + for (cp = buf; cp < buf + cnt; cp++) + if ((*cp >= ' ' && *cp <= '~') || + any(*cp, value(EXCEPTIONS))) + putc(*cp, fscript); + } + } +} |
