930 lines
19 KiB
C
930 lines
19 KiB
C
/* $NetBSD: cmds.c,v 1.37 2014/07/12 05:28:07 mlelstv Exp $ */
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/*
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* Copyright (c) 1983, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "@(#)cmds.c 8.1 (Berkeley) 6/6/93";
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#endif
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__RCSID("$NetBSD: cmds.c,v 1.37 2014/07/12 05:28:07 mlelstv Exp $");
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#endif /* not lint */
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#include "tip.h"
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#include "pathnames.h"
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/*
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* tip
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*
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* miscellaneous commands
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*/
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int quant[] = { 60, 60, 24 };
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char null = '\0';
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const char *sep[] = { "second", "minute", "hour" };
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static char *argv[10]; /* argument vector for take and put */
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int args(char *, char **);
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int anyof(char *, const char *);
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void execute(char *);
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__dead static void intcopy(int);
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void prtime(const char *, time_t);
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void stopsnd(int);
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void transfer(char *, int, const char *);
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void transmit(FILE *, const char *, char *);
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/*
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* FTP - remote ==> local
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* get a file from the remote host
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*/
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void
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getfl(char c)
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{
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char buf[256], *cp;
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(void)putchar(c);
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/*
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* get the UNIX receiving file's name
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*/
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if (prompt("Local file name? ", copyname, sizeof copyname))
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return;
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cp = expand(copyname);
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if ((sfd = open(cp, O_RDWR|O_CREAT, 0666)) < 0) {
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(void)printf("\r\n%s: cannot create\r\n", copyname);
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return;
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}
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/*
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* collect parameters
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*/
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if (prompt("List command for remote system? ", buf,
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sizeof buf)) {
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(void)unlink(copyname);
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return;
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}
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transfer(buf, sfd, value(EOFREAD));
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}
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/*
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* Cu-like take command
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*/
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/* ARGSUSED */
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void
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cu_take(char dummy __unused)
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{
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int fd, argc;
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char line[BUFSIZ], *cp;
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if (prompt("[take] ", copyname, sizeof copyname))
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return;
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if ((argc = args(copyname, argv)) < 1 || argc > 2) {
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(void)printf("usage: <take> from [to]\r\n");
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return;
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}
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if (argc == 1)
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argv[1] = argv[0];
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cp = expand(argv[1]);
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if ((fd = open(cp, O_RDWR|O_CREAT, 0666)) < 0) {
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(void)printf("\r\n%s: cannot create\r\n", argv[1]);
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return;
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}
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(void)snprintf(line, sizeof line, "cat %s;echo \01", argv[0]);
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transfer(line, fd, "\01");
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}
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static jmp_buf intbuf;
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/*
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* Bulk transfer routine --
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* used by getfl(), cu_take(), and pipefile()
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*/
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void
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transfer(char *buf, int fd, const char *eofchars)
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{
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int ct;
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char c, buffer[BUFSIZ];
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char * volatile p;
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int cnt, eof;
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time_t start;
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sig_t f;
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char r;
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p = buffer;
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xpwrite(FD, buf, strlen(buf));
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quit = 0;
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(void)write(attndes[1], "W", 1); /* Put TIPOUT into a wait state */
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(void)read(repdes[0], (char *)&ccc, 1); /* Wait until read process stops */
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/*
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* finish command
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*/
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r = '\r';
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xpwrite(FD, &r, 1);
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do
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(void)read(FD, &c, 1);
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while ((c&STRIP_PAR) != '\n');
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(void)tcsetattr(0, TCSAFLUSH, &defchars);
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(void) setjmp(intbuf);
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f = signal(SIGINT, intcopy);
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start = time(0);
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for (ct = 0; !quit;) {
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eof = read(FD, &c, 1) <= 0;
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c &= STRIP_PAR;
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if (quit)
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continue;
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if (eof || any(c, eofchars))
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break;
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if (c == 0)
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continue; /* ignore nulls */
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if (c == '\r')
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continue;
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*p++ = c;
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if (c == '\n' && boolean(value(VERBOSE)))
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(void)printf("\r%d", ++ct);
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if ((cnt = (p-buffer)) == number(value(FRAMESIZE))) {
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if (write(fd, buffer, (size_t)cnt) != cnt) {
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(void)printf("\r\nwrite error\r\n");
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quit = 1;
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}
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p = buffer;
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}
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}
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if ((cnt = (p-buffer)) != 0)
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if (write(fd, buffer, (size_t)cnt) != cnt)
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(void)printf("\r\nwrite error\r\n");
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if (boolean(value(VERBOSE)))
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prtime(" lines transferred in ", time(0)-start);
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(void)tcsetattr(0, TCSAFLUSH, &term);
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(void)write(fildes[1], (char *)&ccc, 1);
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(void)signal(SIGINT, f);
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(void)close(fd);
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}
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/*
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* FTP - remote ==> local process
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* send remote input to local process via pipe
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*/
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/* ARGSUSED */
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void
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pipefile(char dummy __unused)
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{
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int cpid, pdes[2];
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char buf[256];
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int status, p;
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if (prompt("Local command? ", buf, sizeof buf))
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return;
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if (pipe(pdes)) {
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(void)printf("can't establish pipe\r\n");
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return;
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}
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if ((cpid = fork()) < 0) {
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(void)printf("can't fork!\r\n");
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return;
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} else if (cpid) {
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if (prompt("List command for remote system? ", buf,
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sizeof buf)) {
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(void)close(pdes[0]);
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(void)close(pdes[1]);
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(void)kill(cpid, SIGKILL);
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} else {
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(void)close(pdes[0]);
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(void)signal(SIGPIPE, intcopy);
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transfer(buf, pdes[1], value(EOFREAD));
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(void)signal(SIGPIPE, SIG_DFL);
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while ((p = wait(&status)) > 0 && p != cpid)
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;
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}
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} else {
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(void)dup2(pdes[0], 0);
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(void)close(pdes[0]);
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(void)closefrom(3);
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execute(buf);
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(void)printf("can't execl!\r\n");
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exit(0);
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}
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}
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/*
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* Interrupt service routine for FTP
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*/
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/* ARGSUSED */
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void
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stopsnd(int dummy __unused)
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{
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stop = 1;
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(void)signal(SIGINT, SIG_IGN);
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}
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/*
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* FTP - local ==> remote
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* send local file to remote host
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* terminate transmission with pseudo EOF sequence
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*/
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void
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sendfile(char cc)
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{
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FILE *fd;
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char *fnamex;
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(void)putchar(cc);
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/*
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* get file name
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*/
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if (prompt("Local file name? ", fname, sizeof fname))
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return;
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/*
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* look up file
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*/
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fnamex = expand(fname);
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if ((fd = fopen(fnamex, "r")) == NULL) {
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(void)printf("%s: cannot open\r\n", fname);
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return;
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}
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transmit(fd, value(EOFWRITE), NULL);
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if (!boolean(value(ECHOCHECK)))
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(void)tcdrain(FD);
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}
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/*
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* Bulk transfer routine to remote host --
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* used by sendfile() and cu_put()
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*/
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void
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transmit(FILE *fd, const char *eofchars, char *command)
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{
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const char *pc;
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char lastc;
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int c;
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int ccount, lcount;
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time_t start_t, stop_t;
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sig_t f;
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(void)write(attndes[1], "W", 1); /* put TIPOUT into a wait state */
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stop = 0;
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f = signal(SIGINT, stopsnd);
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(void)tcsetattr(0, TCSAFLUSH, &defchars);
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(void)read(repdes[0], (char *)&ccc, 1);
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if (command != NULL) {
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for (pc = command; *pc; pc++)
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sendchar(*pc);
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if (boolean(value(ECHOCHECK)))
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(void)read(FD, &c, (size_t)1); /* trailing \n */
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else {
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(void)tcdrain(FD);
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(void)sleep(5); /* wait for remote stty to take effect */
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}
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}
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lcount = 0;
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lastc = '\0';
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start_t = time(0);
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/* CONSTCOND */
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while (1) {
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ccount = 0;
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do {
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c = getc(fd);
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if (stop)
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goto out;
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if (c == EOF)
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goto out;
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if (c == 0177 && !boolean(value(RAWFTP)))
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continue;
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lastc = c;
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if (c < 040) {
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if (c == '\n') {
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if (!boolean(value(RAWFTP)))
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c = '\r';
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}
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else if (c == '\t') {
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if (!boolean(value(RAWFTP))) {
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if (boolean(value(TABEXPAND))) {
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sendchar(' ');
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while ((++ccount % 8) != 0)
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sendchar(' ');
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continue;
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}
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}
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} else
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if (!boolean(value(RAWFTP)))
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continue;
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}
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sendchar(c);
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} while (c != '\r' && !boolean(value(RAWFTP)));
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if (boolean(value(VERBOSE)))
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(void)printf("\r%d", ++lcount);
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if (boolean(value(ECHOCHECK))) {
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timedout = 0;
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(void)alarm((unsigned int)number(value(ETIMEOUT)));
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do { /* wait for prompt */
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(void)read(FD, &c, (size_t)1);
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if (timedout || stop) {
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if (timedout)
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(void)printf(
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"\r\ntimed out at eol\r\n");
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(void)alarm(0);
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goto out;
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}
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} while ((c&STRIP_PAR) != character(value(PROMPT)));
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(void)alarm(0);
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}
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}
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out:
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if (lastc != '\n' && !boolean(value(RAWFTP)))
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sendchar('\r');
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if (eofchars) {
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for (pc = eofchars; *pc; pc++)
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sendchar(*pc);
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}
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stop_t = time(0);
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(void)fclose(fd);
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(void)signal(SIGINT, f);
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if (boolean(value(VERBOSE))) {
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if (boolean(value(RAWFTP)))
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prtime(" chars transferred in ", stop_t-start_t);
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else
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prtime(" lines transferred in ", stop_t-start_t);
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}
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(void)write(fildes[1], (char *)&ccc, 1);
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(void)tcsetattr(0, TCSAFLUSH, &term);
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}
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/*
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* Cu-like put command
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*/
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/* ARGSUSED */
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void
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cu_put(char dummy __unused)
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{
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FILE *fd;
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char line[BUFSIZ];
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int argc;
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char *copynamex;
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if (prompt("[put] ", copyname, sizeof copyname))
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return;
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if ((argc = args(copyname, argv)) < 1 || argc > 2) {
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(void)printf("usage: <put> from [to]\r\n");
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return;
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}
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if (argc == 1)
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argv[1] = argv[0];
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copynamex = expand(argv[0]);
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if ((fd = fopen(copynamex, "r")) == NULL) {
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(void)printf("%s: cannot open\r\n", copynamex);
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return;
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}
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if (boolean(value(ECHOCHECK)))
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(void)snprintf(line, sizeof line, "cat>%s\r", argv[1]);
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else
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(void)snprintf(line, sizeof line, "stty -echo;cat>%s;stty echo\r", argv[1]);
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transmit(fd, "\04", line);
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}
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/*
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* FTP - send single character
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* wait for echo & handle timeout
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*/
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void
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sendchar(char c)
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{
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char cc;
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int retry = 0;
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cc = c;
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xpwrite(FD, &cc, 1);
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#ifdef notdef
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if (number(value(CDELAY)) > 0 && c != '\r')
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nap(number(value(CDELAY)));
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#endif
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if (!boolean(value(ECHOCHECK))) {
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#ifdef notdef
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if (number(value(LDELAY)) > 0 && c == '\r')
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nap(number(value(LDELAY)));
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#endif
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return;
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}
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tryagain:
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timedout = 0;
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(void)alarm((unsigned int)number(value(ETIMEOUT)));
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(void)read(FD, &cc, 1);
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(void)alarm(0);
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if (timedout) {
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(void)printf("\r\ntimeout error (%s)\r\n", ctrl(c));
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if (retry++ > 3)
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return;
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xpwrite(FD, &null, 1); /* poke it */
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goto tryagain;
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}
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}
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/* ARGSUSED */
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void
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alrmtimeout(int dummy __unused)
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{
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(void)signal(SIGALRM, alrmtimeout);
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timedout = 1;
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}
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/*
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* Stolen from consh() -- puts a remote file on the output of a local command.
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* Identical to consh() except for where stdout goes.
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*/
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void
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pipeout(char c)
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{
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char buf[256];
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int cpid, status, p;
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time_t start = 0;
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(void)putchar(c);
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if (prompt("Local command? ", buf, sizeof buf))
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return;
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(void)write(attndes[1], "W", 1); /* put TIPOUT into a wait state */
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(void)signal(SIGINT, SIG_IGN);
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(void)signal(SIGQUIT, SIG_IGN);
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(void)tcsetattr(0, TCSAFLUSH, &defchars);
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(void)read(repdes[0], (char *)&ccc, 1);
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/*
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* Set up file descriptors in the child and
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* let it go...
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*/
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if ((cpid = fork()) < 0)
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(void)printf("can't fork!\r\n");
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else if (cpid) {
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start = time(0);
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while ((p = wait(&status)) > 0 && p != cpid)
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;
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} else {
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(void)dup2(FD, 1);
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(void)closefrom(3);
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(void)signal(SIGINT, SIG_DFL);
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(void)signal(SIGQUIT, SIG_DFL);
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execute(buf);
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(void)printf("can't find `%s'\r\n", buf);
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exit(0);
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}
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if (boolean(value(VERBOSE)))
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prtime("away for ", time(0)-start);
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(void)write(fildes[1], (char *)&ccc, 1);
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(void)tcsetattr(0, TCSAFLUSH, &term);
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(void)signal(SIGINT, SIG_DFL);
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(void)signal(SIGQUIT, SIG_DFL);
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}
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/*
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* Fork a program with:
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* 0 <-> remote tty in
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* 1 <-> remote tty out
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* 2 <-> local tty out
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*/
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void
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consh(char c)
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{
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char buf[256];
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int cpid, status, p;
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time_t start = 0;
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(void)putchar(c);
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if (prompt("Local command? ", buf, sizeof buf))
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return;
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(void)write(attndes[1], "W", 1); /* put TIPOUT into a wait state */
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(void)signal(SIGINT, SIG_IGN);
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(void)signal(SIGQUIT, SIG_IGN);
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(void)tcsetattr(0, TCSAFLUSH, &defchars);
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(void)read(repdes[0], (char *)&ccc, 1);
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/*
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* Set up file descriptors in the child and
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* let it go...
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*/
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if ((cpid = fork()) < 0)
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(void)printf("can't fork!\r\n");
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else if (cpid) {
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start = time(0);
|
|
while ((p = wait(&status)) > 0 && p != cpid)
|
|
;
|
|
} else {
|
|
(void)dup2(FD, 0);
|
|
(void)dup2(FD, 1);
|
|
(void)closefrom(3);
|
|
(void)signal(SIGINT, SIG_DFL);
|
|
(void)signal(SIGQUIT, SIG_DFL);
|
|
execute(buf);
|
|
(void)printf("can't find `%s'\r\n", buf);
|
|
exit(0);
|
|
}
|
|
if (boolean(value(VERBOSE)))
|
|
prtime("away for ", time(0)-start);
|
|
(void)write(fildes[1], (char *)&ccc, 1);
|
|
(void)tcsetattr(0, TCSAFLUSH, &term);
|
|
(void)signal(SIGINT, SIG_DFL);
|
|
(void)signal(SIGQUIT, SIG_DFL);
|
|
}
|
|
|
|
/*
|
|
* Escape to local shell
|
|
*/
|
|
/* ARGSUSED */
|
|
void
|
|
shell(char dummy __unused)
|
|
{
|
|
int shpid, status;
|
|
const char *cp;
|
|
|
|
(void)printf("[sh]\r\n");
|
|
(void)signal(SIGINT, SIG_IGN);
|
|
(void)signal(SIGQUIT, SIG_IGN);
|
|
unraw();
|
|
switch (shpid = fork()) {
|
|
default:
|
|
while (shpid != wait(&status));
|
|
raw();
|
|
(void)printf("\r\n!\r\n");
|
|
(void)signal(SIGINT, SIG_DFL);
|
|
(void)signal(SIGQUIT, SIG_DFL);
|
|
break;
|
|
case 0:
|
|
(void)signal(SIGQUIT, SIG_DFL);
|
|
(void)signal(SIGINT, SIG_DFL);
|
|
if ((cp = strrchr(value(SHELL), '/')) == NULL)
|
|
cp = value(SHELL);
|
|
else
|
|
cp++;
|
|
(void)execl(value(SHELL), cp, NULL);
|
|
(void)fprintf(stderr, "\r\n");
|
|
err(1, "can't execl");
|
|
/* NOTREACHED */
|
|
case -1:
|
|
(void)fprintf(stderr, "\r\n");
|
|
err(1, "can't fork");
|
|
/* NOTREACHED */
|
|
}
|
|
}
|
|
|
|
/*
|
|
* TIPIN portion of scripting
|
|
* initiate the conversation with TIPOUT
|
|
*/
|
|
void
|
|
setscript(void)
|
|
{
|
|
char c;
|
|
/*
|
|
* enable TIPOUT side for dialogue
|
|
*/
|
|
(void)write(attndes[1], "S", 1);
|
|
if (boolean(value(SCRIPT)) && strlen(value(RECORD)))
|
|
(void)write(fildes[1], value(RECORD), strlen(value(RECORD)));
|
|
(void)write(fildes[1], "\n", 1);
|
|
/*
|
|
* wait for TIPOUT to finish
|
|
*/
|
|
(void)read(repdes[0], &c, 1);
|
|
if (c == 'n')
|
|
(void)printf("can't create %s\r\n", (char *)value(RECORD));
|
|
}
|
|
|
|
/*
|
|
* Change current working directory of
|
|
* local portion of tip
|
|
*/
|
|
/* ARGSUSED */
|
|
void
|
|
chdirectory(char dummy __unused)
|
|
{
|
|
char dirnam[80];
|
|
const char *cp = dirnam;
|
|
|
|
if (prompt("[cd] ", dirnam, sizeof dirnam)) {
|
|
if (stoprompt)
|
|
return;
|
|
cp = value(HOME);
|
|
}
|
|
if (chdir(cp) < 0)
|
|
(void)printf("%s: bad directory\r\n", cp);
|
|
(void)printf("!\r\n");
|
|
}
|
|
|
|
void
|
|
tipabort(const char *msg)
|
|
{
|
|
|
|
(void)kill(pid, SIGTERM);
|
|
disconnect(msg);
|
|
if (msg != NULL)
|
|
(void)printf("\r\n%s", msg);
|
|
(void)printf("\r\n[EOT]\r\n");
|
|
unraw();
|
|
exit(0);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
void
|
|
finish(char dummy __unused)
|
|
{
|
|
const char *dismsg;
|
|
|
|
dismsg = value(DISCONNECT);
|
|
if (dismsg != NULL && dismsg[0] != '\0') {
|
|
(void)write(FD, dismsg, strlen(dismsg));
|
|
(void)sleep(5);
|
|
}
|
|
tipabort(NULL);
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
void
|
|
intcopy(int dummy __unused)
|
|
{
|
|
|
|
raw();
|
|
quit = 1;
|
|
longjmp(intbuf, 1);
|
|
}
|
|
|
|
void
|
|
execute(char *s)
|
|
{
|
|
const char *cp;
|
|
|
|
if ((cp = strrchr(value(SHELL), '/')) == NULL)
|
|
cp = value(SHELL);
|
|
else
|
|
cp++;
|
|
(void)execl(value(SHELL), cp, "-c", s, NULL);
|
|
}
|
|
|
|
int
|
|
args(char *buf, char *a[])
|
|
{
|
|
char *p = buf, *start;
|
|
char **parg = a;
|
|
int n = 0;
|
|
|
|
do {
|
|
while (*p && (*p == ' ' || *p == '\t'))
|
|
p++;
|
|
start = p;
|
|
if (*p)
|
|
*parg = p;
|
|
while (*p && (*p != ' ' && *p != '\t'))
|
|
p++;
|
|
if (p != start)
|
|
parg++, n++;
|
|
if (*p)
|
|
*p++ = '\0';
|
|
} while (*p);
|
|
|
|
return(n);
|
|
}
|
|
|
|
void
|
|
prtime(const char *s, time_t a)
|
|
{
|
|
int i;
|
|
int nums[3];
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
nums[i] = (int)(a % quant[i]);
|
|
a /= quant[i];
|
|
}
|
|
(void)printf("%s", s);
|
|
while (--i >= 0)
|
|
if (nums[i] || (i == 0 && nums[1] == 0 && nums[2] == 0))
|
|
(void)printf("%d %s%c ", nums[i], sep[i],
|
|
nums[i] == 1 ? '\0' : 's');
|
|
(void)printf("\r\n!\r\n");
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
void
|
|
variable(char dummy __unused)
|
|
{
|
|
char buf[256];
|
|
|
|
if (prompt("[set] ", buf, sizeof buf))
|
|
return;
|
|
vlex(buf);
|
|
if (vtable[BEAUTIFY].v_access&CHANGED) {
|
|
vtable[BEAUTIFY].v_access &= ~CHANGED;
|
|
(void)write(attndes[1], "B", 1); /* Tell TIPOUT to toggle */
|
|
}
|
|
if (vtable[SCRIPT].v_access&CHANGED) {
|
|
vtable[SCRIPT].v_access &= ~CHANGED;
|
|
setscript();
|
|
/*
|
|
* So that "set record=blah script" doesn't
|
|
* cause two transactions to occur.
|
|
*/
|
|
if (vtable[RECORD].v_access&CHANGED)
|
|
vtable[RECORD].v_access &= ~CHANGED;
|
|
}
|
|
if (vtable[RECORD].v_access&CHANGED) {
|
|
vtable[RECORD].v_access &= ~CHANGED;
|
|
if (boolean(value(SCRIPT)))
|
|
setscript();
|
|
}
|
|
if (vtable[TAND].v_access&CHANGED) {
|
|
vtable[TAND].v_access &= ~CHANGED;
|
|
if (boolean(value(TAND)))
|
|
tandem("on");
|
|
else
|
|
tandem("off");
|
|
}
|
|
if (vtable[LECHO].v_access&CHANGED) {
|
|
vtable[LECHO].v_access &= ~CHANGED;
|
|
HD = boolean(value(LECHO));
|
|
}
|
|
if (vtable[PARITY].v_access&CHANGED) {
|
|
vtable[PARITY].v_access &= ~CHANGED;
|
|
setparity(NULL); /* XXX what is the correct arg? */
|
|
}
|
|
if (vtable[HARDWAREFLOW].v_access&CHANGED) {
|
|
vtable[HARDWAREFLOW].v_access &= ~CHANGED;
|
|
if (boolean(value(HARDWAREFLOW)))
|
|
hardwareflow("on");
|
|
else
|
|
hardwareflow("off");
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Turn tandem mode on or off for remote tty.
|
|
*/
|
|
void
|
|
tandem(const char *option)
|
|
{
|
|
struct termios rmtty;
|
|
|
|
(void)tcgetattr(FD, &rmtty);
|
|
if (strcmp(option, "on") == 0) {
|
|
rmtty.c_iflag |= IXON|IXOFF;
|
|
term.c_iflag |= IXON|IXOFF;
|
|
} else {
|
|
rmtty.c_iflag &= ~(IXON|IXOFF);
|
|
term.c_iflag &= ~(IXON|IXOFF);
|
|
}
|
|
(void)tcsetattr(FD, TCSADRAIN, &rmtty);
|
|
(void)tcsetattr(0, TCSADRAIN, &term);
|
|
}
|
|
|
|
/*
|
|
* Turn hardware flow control on or off for remote tty.
|
|
*/
|
|
void
|
|
hardwareflow(const char *option)
|
|
{
|
|
struct termios rmtty;
|
|
|
|
(void)tcgetattr(FD, &rmtty);
|
|
if (strcmp(option, "on") == 0)
|
|
rmtty.c_cflag |= CRTSCTS;
|
|
else
|
|
rmtty.c_cflag &= ~CRTSCTS;
|
|
(void)tcsetattr(FD, TCSADRAIN, &rmtty);
|
|
}
|
|
|
|
/*
|
|
* Send a break.
|
|
*/
|
|
/* ARGSUSED */
|
|
void
|
|
genbrk(char dummy __unused)
|
|
{
|
|
|
|
(void)ioctl(FD, TIOCSBRK, NULL);
|
|
(void)sleep(1);
|
|
(void)ioctl(FD, TIOCCBRK, NULL);
|
|
}
|
|
|
|
/*
|
|
* Suspend tip
|
|
*/
|
|
void
|
|
suspend(char c)
|
|
{
|
|
|
|
unraw();
|
|
(void)kill(c == CTRL('y') ? getpid() : 0, SIGTSTP);
|
|
raw();
|
|
}
|
|
|
|
/*
|
|
* expand a file name if it includes shell meta characters
|
|
*/
|
|
|
|
char *
|
|
expand(char aname[])
|
|
{
|
|
static char xname[BUFSIZ];
|
|
char * volatile name;
|
|
char cmdbuf[BUFSIZ];
|
|
int mypid, l;
|
|
char *cp;
|
|
const char *Shell;
|
|
int s, pivec[2];
|
|
|
|
name = aname;
|
|
if (!anyof(name, "~{[*?$`'\"\\"))
|
|
return(name);
|
|
if (pipe(pivec) < 0) {
|
|
warn("pipe");
|
|
return(name);
|
|
}
|
|
(void)snprintf(cmdbuf, sizeof cmdbuf, "echo %s", name);
|
|
if ((mypid = vfork()) == 0) {
|
|
Shell = value(SHELL);
|
|
if (Shell == NULL)
|
|
Shell = _PATH_BSHELL;
|
|
(void)close(pivec[0]);
|
|
(void)close(1);
|
|
(void)dup(pivec[1]);
|
|
(void)close(pivec[1]);
|
|
(void)close(2);
|
|
(void)execl(Shell, Shell, "-c", cmdbuf, NULL);
|
|
_exit(1);
|
|
}
|
|
if (mypid == -1) {
|
|
warn("fork");
|
|
(void)close(pivec[0]);
|
|
(void)close(pivec[1]);
|
|
return(NULL);
|
|
}
|
|
(void)close(pivec[1]);
|
|
l = read(pivec[0], xname, BUFSIZ);
|
|
(void)close(pivec[0]);
|
|
while (wait(&s) != mypid)
|
|
continue;
|
|
s &= 0377;
|
|
if (s != 0 && s != SIGPIPE) {
|
|
(void)fprintf(stderr, "\"Echo\" failed\n");
|
|
return(NULL);
|
|
}
|
|
if (l < 0) {
|
|
warn("read");
|
|
return(NULL);
|
|
}
|
|
if (l == 0) {
|
|
(void)fprintf(stderr, "\"%s\": No match\n", name);
|
|
return(NULL);
|
|
}
|
|
if (l == BUFSIZ) {
|
|
(void)fprintf(stderr, "Buffer overflow expanding \"%s\"\n", name);
|
|
return(NULL);
|
|
}
|
|
xname[l] = 0;
|
|
for (cp = &xname[l-1]; *cp == '\n' && cp > xname; cp--)
|
|
;
|
|
*++cp = '\0';
|
|
return(xname);
|
|
}
|
|
|
|
/*
|
|
* Are any of the characters in the two strings the same?
|
|
*/
|
|
|
|
int
|
|
anyof(char *s1, const char *s2)
|
|
{
|
|
int c;
|
|
|
|
while ((c = *s1++) != '\0')
|
|
if (any(c, s2))
|
|
return(1);
|
|
return(0);
|
|
}
|