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-rw-r--r--util/term/term.c312
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diff --git a/util/term/term.c b/util/term/term.c
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--- /dev/null
+++ b/util/term/term.c
@@ -0,0 +1,312 @@
+/* $Id$ */
+/* $OpenBSD: netcat.c,v 1.57 2002/12/30 18:00:18 stevesk Exp $ */
+/*
+ * Copyright (c) 2001 Eric Jackson <ericj@monkey.org>
+ *
+ * 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. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <sys/termios.h>
+#include <sys/time.h>
+#include <sys/un.h>
+
+#include <netinet/in.h>
+#include <arpa/telnet.h>
+
+#include <err.h>
+#include <errno.h>
+#include <netdb.h>
+#include <poll.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+ssize_t atomicio(ssize_t (*)(), int, void *, size_t);
+void readwrite(int);
+int remote_connect(char *, char *, struct addrinfo);
+
+struct termios saved_ios;
+void raw_term();
+void restore_term();
+
+char progname[256];
+void usage(int);
+
+int
+main(int argc, char *argv[])
+{
+ int ch, s, ret;
+ char *host, *port, *endp;
+ struct addrinfo hints;
+ socklen_t len;
+
+ ret = 1;
+ s = 0;
+ host = NULL;
+ port = NULL;
+ endp = NULL;
+
+ strncpy(progname, argv[0], sizeof progname);
+
+ /* Cruft to make sure options are clean, and used properly. */
+ if (argc != 3 || !argv[1] || !argv[2])
+ usage(1);
+
+ host = argv[1];
+ port = argv[2];
+
+
+ if (!isatty(STDIN_FILENO))
+ errx(1, "not attached to a terminal");
+
+ raw_term();
+
+ /* Initialize addrinfo structure */
+ memset(&hints, 0, sizeof(struct addrinfo));
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_protocol = IPPROTO_TCP;
+
+ s = remote_connect(host, port, hints);
+ ret = 0;
+ readwrite(s);
+
+ if (s)
+ close(s);
+
+ exit(ret);
+}
+
+/*
+ * remote_connect()
+ * Return's a socket connected to a remote host. Properly bind's to a local
+ * port or source address if needed. Return's -1 on failure.
+ */
+int
+remote_connect(char *host, char *port, struct addrinfo hints)
+{
+ struct addrinfo *res, *res0;
+ int s, error;
+
+ if ((error = getaddrinfo(host, port, &hints, &res)))
+ errx(1, "getaddrinfo: %s", gai_strerror(error));
+
+ res0 = res;
+ do {
+ if ((s = socket(res0->ai_family, res0->ai_socktype,
+ res0->ai_protocol)) < 0)
+ continue;
+
+ if (connect(s, res0->ai_addr, res0->ai_addrlen) == 0)
+ break;
+
+ close(s);
+ s = -1;
+ } while ((res0 = res0->ai_next) != NULL);
+
+ freeaddrinfo(res);
+
+ return (s);
+}
+
+/*
+ * readwrite()
+ * Loop that polls on the network file descriptor and stdin.
+ */
+void
+readwrite(int nfd)
+{
+ struct pollfd pfd[2];
+ char buf[BUFSIZ];
+ int wfd = fileno(stdin), n, ret;
+ int lfd = fileno(stdout);
+ int escape = 0;
+
+ /* Setup Network FD */
+ pfd[0].fd = nfd;
+ pfd[0].events = POLLIN;
+
+ /* Setup STDIN FD */
+ pfd[1].fd = wfd;
+ pfd[1].events = POLLIN;
+
+ while (pfd[0].fd != -1) {
+ if ((n = poll(pfd, 2, -1)) < 0) {
+ close(nfd);
+ err(1, "Polling Error");
+ }
+
+ if (n == 0)
+ return;
+
+ if (pfd[0].revents & POLLIN) {
+ if ((n = read(nfd, buf, sizeof(buf))) < 0)
+ return;
+ else if (n == 0) {
+ shutdown(nfd, SHUT_RD);
+ pfd[0].fd = -1;
+ pfd[0].events = 0;
+ } else {
+ if ((ret = atomicio(write, lfd, buf, n)) != n)
+ return;
+ }
+ }
+
+ if (pfd[1].revents & POLLIN) {
+ if ((n = read(wfd, buf, sizeof(buf))) < 0)
+ return;
+ else if (n == 0) {
+ shutdown(nfd, SHUT_WR);
+ pfd[1].fd = -1;
+ pfd[1].events = 0;
+ } else {
+ if (escape) {
+ char buf2[] = "~";
+ if (*buf == '.') {
+ printf("quit!\n");
+ return;
+ }
+ escape = 0;
+ if (*buf != '~' &&
+ (ret = atomicio(write, nfd, buf2, 1)) != n)
+ return;
+ } else {
+ escape = (*buf == '~');
+ if (escape)
+ continue;
+ }
+
+ if((ret = atomicio(write, nfd, buf, n)) != n)
+ return;
+ }
+ }
+ }
+}
+
+void
+usage(int ret)
+{
+ fprintf(stderr, "usage: %s hostname port\n", progname);
+ if (ret)
+ exit(1);
+}
+
+/*
+ * Copyright (c) 1995,1999 Theo de Raadt. All rights reserved.
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
+ */
+
+/*
+ * ensure all of data on socket comes through. f==read || f==write
+ */
+ssize_t
+atomicio(ssize_t (*f) (), int fd, void *_s, size_t n)
+{
+ char *s = _s;
+ ssize_t res, pos = 0;
+
+ while (n > pos) {
+ res = (f) (fd, s + pos, n - pos);
+ switch (res) {
+ case -1:
+ if (errno == EINTR || errno == EAGAIN)
+ continue;
+ case 0:
+ return (res);
+ default:
+ pos += res;
+ }
+ }
+ return (pos);
+}
+
+/*
+ * Copyright (c) 2003 Nathan L. Binkert <binkertn@umich.edu>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+void
+raw_term()
+{
+ struct termios ios;
+
+ if (tcgetattr(STDIN_FILENO, &ios) < 0)
+ errx(1, "tcgetagttr\n");
+
+ memcpy(&saved_ios, &ios, sizeof(struct termios));
+
+ ios.c_iflag &= ~(ISTRIP|ICRNL|IGNCR|ICRNL|IXOFF|IXON);
+ ios.c_oflag &= ~(OPOST);
+ ios.c_oflag &= (ONLCR);
+ ios.c_lflag &= ~(ISIG|ICANON|ECHO);
+ ios.c_cc[VMIN] = 1;
+ ios.c_cc[VTIME] = 0;
+
+ if (tcsetattr(STDIN_FILENO, TCSANOW, &ios) < 0)
+ errx(1, "tcsetattr\n");
+
+ atexit(restore_term);
+}
+
+void
+restore_term()
+{
+ tcsetattr(STDIN_FILENO, TCSANOW, &saved_ios);
+}
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