netcat-openbsd: drop package

package/netcat-openbsd/Makefile

@@ -1,30 +0,0 @@
-# This file is part of the OpenADK project. OpenADK is copyrighted
-# material, please see the LICENCE file in the top-level directory.
-
-include $(ADK_TOPDIR)/rules.mk
-
-PKG_NAME:=		netcat-openbsd
-PKG_VERSION:=		1.217
-PKG_RELEASE:=		1
-PKG_HASH:=		fcb551d9987fd51d020c62b6d81df0c2bb17ce1887bbc3fda4d28313791cc0f5
-PKG_DESCR:=		openbsd netcat
-PKG_SECTION:=		net/misc
-PKG_BUILDDEP:=		libbsd
-PKG_DEPENDS:=		libbsd
-PKG_SITES:=		http://deb.debian.org/debian/pool/main/n/netcat-openbsd/
-
-NO_DISTFILES:=		1
-
-include $(ADK_TOPDIR)/mk/package.mk
-
-$(eval $(call PKG_template,NETCAT_OPENBSD,netcat-openbsd,$(PKG_VERSION)-$(PKG_RELEASE),$(PKG_DEPENDS),$(PKG_DESCR),$(PKG_SECTION)))
-
-CONFIG_STYLE:=		manual
-INSTALL_STYLE:=		manual
-
-netcat-openbsd-install:
-	$(INSTALL_DIR) $(IDIR_NETCAT_OPENBSD)/usr/bin
-	$(INSTALL_BIN) $(WRKBUILD)/nc \
-		$(IDIR_NETCAT_OPENBSD)/usr/bin/netcat-openbsd
-
-include $(ADK_TOPDIR)/mk/pkg-bottom.mk

package/netcat-openbsd/src/Makefile

@@ -1,20 +0,0 @@
-#	$OpenBSD: Makefile,v 1.7 2015/09/11 21:07:01 beck Exp $
-
-PROG=	nc
-SRCS=	netcat.c atomicio.c socks.c
-
-PKG_CONFIG ?= pkg-config
-LIBS=  `$(PKG_CONFIG) --libs libbsd` -lresolv
-OBJS=  $(SRCS:.c=.o)
-CFLAGS=  -g -O2
-LDFLAGS=  -Wl,--no-add-needed
-
-all: nc
-nc: $(OBJS)
-	$(CC) $(CFLAGS) $(LDFLAGS) $(OBJS) $(LIBS) -o nc
-
-$(OBJS): %.o: %.c
-	$(CC) $(CFLAGS) -c $< -o $@
-
-clean:
-	rm -f $(OBJS) nc

package/netcat-openbsd/src/atomicio.c

@@ -1,67 +0,0 @@
-/* $OpenBSD: atomicio.c,v 1.11 2012/12/04 02:24:47 deraadt Exp $ */
-/*
- * Copyright (c) 2006 Damien Miller. All rights reserved.
- * Copyright (c) 2005 Anil Madhavapeddy. All rights reserved.
- * 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.
- */
-
-#include <errno.h>
-#include <poll.h>
-#include <unistd.h>
-
-#include "atomicio.h"
-
-/*
- * ensure all of data on socket comes through. f==read || f==vwrite
- */
-size_t
-atomicio(ssize_t (*f) (int, void *, size_t), int fd, void *_s, size_t n)
-{
-	char *s = _s;
-	size_t pos = 0;
-	ssize_t res;
-	struct pollfd pfd;
-
-	pfd.fd = fd;
-	pfd.events = f == read ? POLLIN : POLLOUT;
-	while (n > pos) {
-		res = (f) (fd, s + pos, n - pos);
-		switch (res) {
-		case -1:
-			if (errno == EINTR)
-				continue;
-			if ((errno == EAGAIN) || (errno == ENOBUFS)) {
-				(void)poll(&pfd, 1, -1);
-				continue;
-			}
-			return 0;
-		case 0:
-			errno = EPIPE;
-			return pos;
-		default:
-			pos += (size_t)res;
-		}
-	}
-	return (pos);
-}

package/netcat-openbsd/src/atomicio.h

@@ -1,39 +0,0 @@
-/* $OpenBSD: atomicio.h,v 1.2 2007/09/07 14:50:44 tobias Exp $ */
-
-/*
- * Copyright (c) 2006 Damien Miller.  All rights reserved.
- * 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.
- */
-
-#ifndef _ATOMICIO_H
-#define _ATOMICIO_H
-
-/*
- * Ensure all of data on socket comes through. f==read || f==vwrite
- */
-size_t	atomicio(ssize_t (*)(int, void *, size_t), int, void *, size_t);
-
-#define vwrite (ssize_t (*)(int, void *, size_t))write
-
-#endif /* _ATOMICIO_H */

package/netcat-openbsd/src/nc.1

@@ -1,582 +0,0 @@
-.\"     $OpenBSD: nc.1,v 1.95 2020/02/12 14:46:36 schwarze Exp $
-.\"
-.\" Copyright (c) 1996 David Sacerdote
-.\" 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. 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.
-.\"
-.Dd $Mdocdate: February 12 2020 $
-.Dt NC 1
-.Os
-.Sh NAME
-.Nm nc
-.Nd arbitrary TCP and UDP connections and listens
-.Sh SYNOPSIS
-.Nm nc
-.Op Fl 46bCDdFhklNnrStUuvZz
-.Op Fl I Ar length
-.Op Fl i Ar interval
-.Op Fl M Ar ttl
-.Op Fl m Ar minttl
-.Op Fl O Ar length
-.Op Fl P Ar proxy_username
-.Op Fl p Ar source_port
-.Op Fl q Ar seconds
-.Op Fl s Ar sourceaddr
-.Op Fl T Ar keyword
-.Op Fl V Ar rtable
-.Op Fl W Ar recvlimit
-.Op Fl w Ar timeout
-.Op Fl X Ar proxy_protocol
-.Op Fl x Ar proxy_address Ns Op : Ns Ar port
-.Op Ar destination
-.Op Ar port
-.Sh DESCRIPTION
-The
-.Nm
-(or
-.Nm netcat )
-utility is used for just about anything under the sun involving TCP,
-UDP, or
-.Ux Ns -domain
-sockets.
-It can open TCP connections, send UDP packets, listen on arbitrary
-TCP and UDP ports, do port scanning, and deal with both IPv4 and
-IPv6.
-Unlike
-.Xr telnet 1 ,
-.Nm
-scripts nicely, and separates error messages onto standard error instead
-of sending them to standard output, as
-.Xr telnet 1
-does with some.
-.Pp
-Common uses include:
-.Pp
-.Bl -bullet -offset indent -compact
-.It
-simple TCP proxies
-.It
-shell-script based HTTP clients and servers
-.It
-network daemon testing
-.It
-a SOCKS or HTTP ProxyCommand for
-.Xr ssh 1
-.It
-and much, much more
-.El
-.Pp
-The options are as follows:
-.Bl -tag -width Ds
-.It Fl 4
-Use IPv4 addresses only.
-.It Fl 6
-Use IPv6 addresses only.
-.It Fl b
-Allow broadcast.
-.It Fl C
-Send CRLF as line-ending.  Each line feed (LF) character from the input
-data is translated into CR+LF before being written to the socket.  Line
-feed characters that are already preceded with a carriage return (CR)
-are not translated.  Received data is not affected.
-.It Fl D
-Enable debugging on the socket.
-.It Fl d
-Do not attempt to read from stdin.
-.It Fl F
-Pass the first connected socket using
-.Xr sendmsg 2
-to stdout and exit.
-This is useful in conjunction with
-.Fl X
-to have
-.Nm
-perform connection setup with a proxy but then leave the rest of the
-connection to another program (e.g.\&
-.Xr ssh 1
-using the
-.Xr ssh_config 5
-.Cm ProxyUseFdpass
-option).
-Cannot be used with
-.Fl U .
-.It Fl h
-Print out the
-.Nm
-help text and exit.
-.It Fl I Ar length
-Specify the size of the TCP receive buffer.
-.It Fl i Ar interval
-Sleep for
-.Ar interval
-seconds between lines of text sent and received.
-Also causes a delay time between connections to multiple ports.
-.It Fl k
-When a connection is completed, listen for another one.
-Requires
-.Fl l .
-When used together with the
-.Fl u
-option, the server socket is not connected and it can receive UDP datagrams from
-multiple hosts.
-.It Fl l
-Listen for an incoming connection rather than initiating a
-connection to a remote host.
-The
-.Ar destination
-and
-.Ar port
-to listen on can be specified either as non-optional arguments, or with
-options
-.Fl s
-and
-.Fl p
-respectively.
-Cannot be used together with
-.Fl x
-or
-.Fl z .
-Additionally, any timeouts specified with the
-.Fl w
-option are ignored.
-.It Fl M Ar ttl
-Set the TTL / hop limit of outgoing packets.
-.It Fl m Ar minttl
-Ask the kernel to drop incoming packets whose TTL / hop limit is under
-.Ar minttl .
-.It Fl N
-.Xr shutdown 2
-the network socket after EOF on the input.
-Some servers require this to finish their work.
-.It Fl n
-Do not perform domain name resolution.
-If a name cannot be resolved without DNS, an error will be reported.
-.It Fl O Ar length
-Specify the size of the TCP send buffer.
-.It Fl P Ar proxy_username
-Specifies a username to present to a proxy server that requires authentication.
-If no username is specified then authentication will not be attempted.
-Proxy authentication is only supported for HTTP CONNECT proxies at present.
-.It Fl p Ar source_port
-Specify the source port
-.Nm
-should use, subject to privilege restrictions and availability.
-.It Fl q Ar seconds
-after EOF on stdin, wait the specified number of
-.Ar seconds
-and then quit. If
-.Ar seconds
-is negative, wait forever (default).  Specifying a non-negative
-.Ar seconds
-implies
-.Fl N .
-.It Fl r
-Choose source and/or destination ports randomly
-instead of sequentially within a range or in the order that the system
-assigns them.
-.It Fl S
-Enable the RFC 2385 TCP MD5 signature option.
-.It Fl s Ar sourceaddr
-Set the source address to send packets from,
-which is useful on machines with multiple interfaces.
-For
-.Ux Ns -domain
-datagram sockets, specifies the local temporary socket file
-to create and use so that datagrams can be received.
-Cannot be used together with
-.Fl x .
-.It Fl T Ar keyword
-Change the IPv4 TOS/IPv6 traffic class value.
-.Ar keyword
-may be one of
-.Cm critical ,
-.Cm inetcontrol ,
-.Cm lowcost ,
-.Cm lowdelay ,
-.Cm netcontrol ,
-.Cm throughput ,
-.Cm reliability ,
-or one of the DiffServ Code Points:
-.Cm ef ,
-.Cm af11 No ... Cm af43 ,
-.Cm cs0 No ... Cm cs7 ;
-or a number in either hex or decimal.
-.It Fl t
-Send RFC 854 DON'T and WON'T responses to RFC 854 DO and WILL requests.
-This makes it possible to use
-.Nm
-to script telnet sessions.
-.It Fl U
-Use
-.Ux Ns -domain
-sockets.
-Cannot be used together with
-.Fl F
-or
-.Fl x .
-.It Fl u
-Use UDP instead of TCP.
-Cannot be used together with
-.Fl x .
-For
-.Ux Ns -domain
-sockets, use a datagram socket instead of a stream socket.
-If a
-.Ux Ns -domain
-socket is used, a temporary receiving socket is created in
-.Pa /tmp
-unless the
-.Fl s
-flag is given.
-.It Fl V Ar rtable
-Set the routing table to be used.
-.It Fl v
-Produce more verbose output.
-.It Fl W Ar recvlimit
-Terminate after receiving
-.Ar recvlimit
-packets from the network.
-.It Fl w Ar timeout
-Connections which cannot be established or are idle timeout after
-.Ar timeout
-seconds.
-The
-.Fl w
-flag has no effect on the
-.Fl l
-option, i.e.\&
-.Nm
-will listen forever for a connection, with or without the
-.Fl w
-flag.
-The default is no timeout.
-.It Fl X Ar proxy_protocol
-Use
-.Ar proxy_protocol
-when talking to the proxy server.
-Supported protocols are
-.Cm 4
-(SOCKS v.4),
-.Cm 5
-(SOCKS v.5)
-and
-.Cm connect
-(HTTPS proxy).
-If the protocol is not specified, SOCKS version 5 is used.
-.It Fl x Ar proxy_address Ns Op : Ns Ar port
-Connect to
-.Ar destination
-using a proxy at
-.Ar proxy_address
-and
-.Ar port .
-If
-.Ar port
-is not specified, the well-known port for the proxy protocol is used (1080
-for SOCKS, 3128 for HTTPS).
-An IPv6 address can be specified unambiguously by enclosing
-.Ar proxy_address
-in square brackets.
-A proxy cannot be used with any of the options
-.Fl lsuU .
-.It Fl Z
-DCCP mode.
-.It Fl z
-Only scan for listening daemons, without sending any data to them.
-Cannot be used together with
-.Fl l .
-.El
-.Pp
-.Ar destination
-can be a numerical IP address or a symbolic hostname
-(unless the
-.Fl n
-option is given).
-In general, a destination must be specified,
-unless the
-.Fl l
-option is given
-(in which case the local host is used).
-For
-.Ux Ns -domain
-sockets, a destination is required and is the socket path to connect to
-(or listen on if the
-.Fl l
-option is given).
-.Pp
-.Ar port
-can be specified as a numeric port number or as a service name.
-Port ranges may be specified as numeric port numbers of the form
-.Ar nn Ns - Ns Ar mm .
-In general,
-a destination port must be specified,
-unless the
-.Fl U
-option is given.
-.Sh CLIENT/SERVER MODEL
-It is quite simple to build a very basic client/server model using
-.Nm .
-On one console, start
-.Nm
-listening on a specific port for a connection.
-For example:
-.Pp
-.Dl $ nc -l 1234
-.Pp
-.Nm
-is now listening on port 1234 for a connection.
-On a second console
-.Pq or a second machine ,
-connect to the machine and port being listened on:
-.Pp
-.Dl $ nc 127.0.0.1 1234
-.Pp
-There should now be a connection between the ports.
-Anything typed at the second console will be concatenated to the first,
-and vice-versa.
-After the connection has been set up,
-.Nm
-does not really care which side is being used as a
-.Sq server
-and which side is being used as a
-.Sq client .
-The connection may be terminated using an
-.Dv EOF
-.Pq Sq ^D .
-.Pp
-There is no
-.Fl c
-or
-.Fl e
-option in this netcat, but you still can execute a command after connection
-being established by redirecting file descriptors. Be cautious here because
-opening a port and let anyone connected execute arbitrary command on your
-site is DANGEROUS. If you really need to do this, here is an example:
-.Pp
-On
-.Sq server
-side:
-.Pp
-.Dl $ rm -f /tmp/f; mkfifo /tmp/f
-.Dl $ cat /tmp/f | /bin/sh -i 2>&1 | nc -l 127.0.0.1 1234 > /tmp/f
-.Pp
-On
-.Sq client
-side:
-.Pp
-.Dl $ nc host.example.com 1234
-.Dl $ (shell prompt from host.example.com)
-.Pp
-By doing this, you create a fifo at /tmp/f and make nc listen at port 1234
-of address 127.0.0.1 on
-.Sq server
-side, when a
-.Sq client
-establishes a connection successfully to that port, /bin/sh gets executed
-on
-.Sq server
-side and the shell prompt is given to
-.Sq client
-side.
-.Pp
-When connection is terminated,
-.Nm
-quits as well. Use
-.Fl k
-if you want it keep listening, but if the command quits this option won't
-restart it or keep
-.Nm
-running. Also don't forget to remove the file descriptor once you don't need
-it anymore:
-.Pp
-.Dl $ rm -f /tmp/f
-.Pp
-.Sh DATA TRANSFER
-The example in the previous section can be expanded to build a
-basic data transfer model.
-Any information input into one end of the connection will be output
-to the other end, and input and output can be easily captured in order to
-emulate file transfer.
-.Pp
-Start by using
-.Nm
-to listen on a specific port, with output captured into a file:
-.Pp
-.Dl $ nc -l 1234 \*(Gt filename.out
-.Pp
-Using a second machine, connect to the listening
-.Nm
-process, feeding it the file which is to be transferred:
-.Pp
-.Dl $ nc -N host.example.com 1234 \*(Lt filename.in
-.Pp
-After the file has been transferred, the connection will close automatically.
-.Sh TALKING TO SERVERS
-It is sometimes useful to talk to servers
-.Dq by hand
-rather than through a user interface.
-It can aid in troubleshooting,
-when it might be necessary to verify what data a server is sending
-in response to commands issued by the client.
-For example, to retrieve the home page of a web site:
-.Bd -literal -offset indent
-$ printf "GET / HTTP/1.0\er\en\er\en" | nc host.example.com 80
-.Ed
-.Pp
-Note that this also displays the headers sent by the web server.
-They can be filtered, using a tool such as
-.Xr sed 1 ,
-if necessary.
-.Pp
-More complicated examples can be built up when the user knows the format
-of requests required by the server.
-As another example, an email may be submitted to an SMTP server using:
-.Bd -literal -offset indent
-$ nc [\-C] localhost 25 \*(Lt\*(Lt EOF
-HELO host.example.com
-MAIL FROM:\*(Ltuser@host.example.com\*(Gt
-RCPT TO:\*(Ltuser2@host.example.com\*(Gt
-DATA
-Body of email.
-\&.
-QUIT
-EOF
-.Ed
-.Sh PORT SCANNING
-It may be useful to know which ports are open and running services on
-a target machine.
-The
-.Fl z
-flag can be used to tell
-.Nm
-to report open ports,
-rather than initiate a connection. Usually it's useful to turn on verbose
-output to stderr by use this option in conjunction with
-.Fl v
-option.
-.Pp
-For example:
-.Bd -literal -offset indent
-$ nc \-zv host.example.com 20-30
-Connection to host.example.com 22 port [tcp/ssh] succeeded!
-Connection to host.example.com 25 port [tcp/smtp] succeeded!
-.Ed
-.Pp
-The port range was specified to limit the search to ports 20 \- 30, and is
-scanned by increasing order (unless the
-.Fl r
-flag is set).
-.Pp
-You can also specify a list of ports to scan, for example:
-.Bd -literal -offset indent
-$ nc \-zv host.example.com http 20 22-23
-nc: connect to host.example.com 80 (tcp) failed: Connection refused
-nc: connect to host.example.com 20 (tcp) failed: Connection refused
-Connection to host.example.com port [tcp/ssh] succeeded!
-nc: connect to host.example.com 23 (tcp) failed: Connection refused
-.Ed
-.Pp
-The ports are scanned by the order you given (unless the
-.Fl r
-flag is set).
-.Pp
-Alternatively, it might be useful to know which server software
-is running, and which versions.
-This information is often contained within the greeting banners.
-In order to retrieve these, it is necessary to first make a connection,
-and then break the connection when the banner has been retrieved.
-This can be accomplished by specifying a small timeout with the
-.Fl w
-flag, or perhaps by issuing a
-.Qq Dv QUIT
-command to the server:
-.Bd -literal -offset indent
-$ echo "QUIT" | nc host.example.com 20-30
-SSH-1.99-OpenSSH_3.6.1p2
-Protocol mismatch.
-220 host.example.com IMS SMTP Receiver Version 0.84 Ready
-.Ed
-.Sh EXAMPLES
-Open a TCP connection to port 42 of host.example.com, using port 31337 as
-the source port, with a timeout of 5 seconds:
-.Pp
-.Dl $ nc -p 31337 -w 5 host.example.com 42
-.Pp
-Open a UDP connection to port 53 of host.example.com:
-.Pp
-.Dl $ nc -u host.example.com 53
-.Pp
-Open a TCP connection to port 42 of host.example.com using 10.1.2.3 as the
-IP for the local end of the connection:
-.Pp
-.Dl $ nc -s 10.1.2.3 host.example.com 42
-.Pp
-Create and listen on a
-.Ux Ns -domain
-stream socket:
-.Pp
-.Dl $ nc -lU /var/tmp/dsocket
-.Pp
-Connect to port 42 of host.example.com via an HTTP proxy at 10.2.3.4,
-port 8080.
-This example could also be used by
-.Xr ssh 1 ;
-see the
-.Cm ProxyCommand
-directive in
-.Xr ssh_config 5
-for more information.
-.Pp
-.Dl $ nc -x10.2.3.4:8080 -Xconnect host.example.com 42
-.Pp
-The same example again, this time enabling proxy authentication with username
-.Dq ruser
-if the proxy requires it:
-.Pp
-.Dl $ nc -x10.2.3.4:8080 -Xconnect -Pruser host.example.com 42
-.Sh SEE ALSO
-.Xr cat 1 ,
-.Xr ssh 1
-.Sh AUTHORS
-Original implementation by
-.An *Hobbit* Aq Mt hobbit@avian.org .
-.br
-Rewritten with IPv6 support by
-.An Eric Jackson Aq Mt ericj@monkey.org .
-.br
-Modified for Debian port by Aron Xu
-.Aq aron@debian.org .
-.Sh CAVEATS
-UDP port scans using the
-.Fl uz
-combination of flags will always report success irrespective of
-the target machine's state.
-However,
-in conjunction with a traffic sniffer either on the target machine
-or an intermediary device,
-the
-.Fl uz
-combination could be useful for communications diagnostics.
-Note that the amount of UDP traffic generated may be limited either
-due to hardware resources and/or configuration settings.

package/netcat-openbsd/src/netcat.c

@@ -1,2305 +0,0 @@
-/* $OpenBSD: netcat.c,v 1.217 2020/02/12 14:46:36 schwarze Exp $ */
-/*
- * Copyright (c) 2001 Eric Jackson <ericj@monkey.org>
- * Copyright (c) 2015 Bob Beck.  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. 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.
- */
-
-/*
- * Re-written nc(1) for OpenBSD. Original implementation by
- * *Hobbit* <hobbit@avian.org>.
- */
-
-#define _GNU_SOURCE
-
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <sys/uio.h>
-#include <sys/un.h>
-
-#include <netinet/in.h>
-#include <netinet/tcp.h>
-#include <netinet/ip.h>
-#include <arpa/telnet.h>
-#ifdef __linux__
-# include <linux/in6.h>
-#endif
-#if defined(TCP_MD5SIG_EXT) && defined(TCP_MD5SIG_MAXKEYLEN)
-# include <bsd/readpassphrase.h>
-#endif
-
-#ifndef IPTOS_LOWDELAY
-# define IPTOS_LOWDELAY 0x10
-# define IPTOS_THROUGHPUT 0x08
-# define IPTOS_RELIABILITY 0x04
-# define IPTOS_LOWCOST 0x02
-# define IPTOS_MINCOST IPTOS_LOWCOST
-#endif /* IPTOS_LOWDELAY */
-
-# ifndef IPTOS_DSCP_AF11
-# define	IPTOS_DSCP_AF11		0x28
-# define	IPTOS_DSCP_AF12		0x30
-# define	IPTOS_DSCP_AF13		0x38
-# define	IPTOS_DSCP_AF21		0x48
-# define	IPTOS_DSCP_AF22		0x50
-# define	IPTOS_DSCP_AF23		0x58
-# define	IPTOS_DSCP_AF31		0x68
-# define	IPTOS_DSCP_AF32		0x70
-# define	IPTOS_DSCP_AF33		0x78
-# define	IPTOS_DSCP_AF41		0x88
-# define	IPTOS_DSCP_AF42		0x90
-# define	IPTOS_DSCP_AF43		0x98
-# define	IPTOS_DSCP_EF		0xb8
-#endif /* IPTOS_DSCP_AF11 */
-
-#ifndef IPTOS_DSCP_CS0
-# define	IPTOS_DSCP_CS0		0x00
-# define	IPTOS_DSCP_CS1		0x20
-# define	IPTOS_DSCP_CS2		0x40
-# define	IPTOS_DSCP_CS3		0x60
-# define	IPTOS_DSCP_CS4		0x80
-# define	IPTOS_DSCP_CS5		0xa0
-# define	IPTOS_DSCP_CS6		0xc0
-# define	IPTOS_DSCP_CS7		0xe0
-#endif /* IPTOS_DSCP_CS0 */
-
-#ifndef IPTOS_DSCP_EF
-# define	IPTOS_DSCP_EF		0xb8
-#endif /* IPTOS_DSCP_EF */
-
-
-#include <ctype.h>
-#include <err.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <netdb.h>
-#include <poll.h>
-#include <signal.h>
-#include <stddef.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <time.h>
-#ifdef TLS
-# include <tls.h>
-#endif
-#include <unistd.h>
-#include <bsd/stdlib.h>
-#include <bsd/string.h>
-
-#include "atomicio.h"
-
-#define PORT_MAX	65535
-#define UNIX_DG_TMP_SOCKET_SIZE	19
-
-#define POLL_STDIN	0
-#define POLL_NETOUT	1
-#define POLL_NETIN	2
-#define POLL_STDOUT	3
-#define BUFSIZE		16384
-
-#ifdef TLS
-# define TLS_NOVERIFY	(1 << 1)
-# define TLS_NONAME	(1 << 2)
-# define TLS_CCERT	(1 << 3)
-# define TLS_MUSTSTAPLE	(1 << 4)
-#endif
-
-#define CONNECTION_SUCCESS 0
-#define CONNECTION_FAILED 1
-#define CONNECTION_TIMEOUT 2
-
-#define UDP_SCAN_TIMEOUT 3			/* Seconds */
-
-/* Command Line Options */
-int	bflag;					/* Allow Broadcast */
-int	dflag;					/* detached, no stdin */
-int	Fflag;					/* fdpass sock to stdout */
-unsigned int iflag;				/* Interval Flag */
-int	kflag;					/* More than one connect */
-int	lflag;					/* Bind to local port */
-int	Nflag;					/* shutdown() network socket */
-int	nflag;					/* Don't do name look up */
-char   *Pflag;					/* Proxy username */
-char   *pflag;					/* Localport flag */
-int    qflag = -1;				/* Quit after some secs */
-int	rflag;					/* Random ports flag */
-char   *sflag;					/* Source Address */
-int	tflag;					/* Telnet Emulation */
-int	uflag;					/* UDP - Default to TCP */
-int	dccpflag;				/* DCCP - Default to TCP */
-int	vflag;					/* Verbosity */
-int	xflag;					/* Socks proxy */
-int	zflag;					/* Port Scan Flag */
-int	Dflag;					/* sodebug */
-int	Iflag;					/* TCP receive buffer size */
-int	Oflag;					/* TCP send buffer size */
-int	Sflag;					/* TCP MD5 signature option */
-int	Tflag = -1;				/* IP Type of Service */
-int	rtableid = -1;
-
-# if defined(TLS)
-int	usetls;					/* use TLS */
-const char    *Cflag;				/* Public cert file */
-const char    *Kflag;				/* Private key file */
-const char    *oflag;				/* OCSP stapling file */
-const char    *Rflag;				/* Root CA file */
-int	tls_cachanged;				/* Using non-default CA file */
-int     TLSopt;					/* TLS options */
-char	*tls_expectname;			/* required name in peer cert */
-char	*tls_expecthash;			/* required hash of peer cert */
-char	*tls_ciphers;				/* TLS ciphers */
-char	*tls_protocols;				/* TLS protocols */
-FILE	*Zflag;					/* file to save peer cert */
-# else
-int	Cflag = 0;			/* CRLF line-ending */
-# endif
-
-# if defined(TCP_MD5SIG_EXT) && defined(TCP_MD5SIG_MAXKEYLEN)
-char Sflag_password[TCP_MD5SIG_MAXKEYLEN];
-# endif
-int recvcount, recvlimit;
-int timeout = -1;
-int family = AF_UNSPEC;
-char *portlist[PORT_MAX+1];
-char *unix_dg_tmp_socket;
-int ttl = -1;
-int minttl = -1;
-
-void	atelnet(int, unsigned char *, unsigned int);
-int	strtoport(char *portstr, int udp);
-void	build_ports(char **);
-void	help(void) __attribute__((noreturn));
-int	local_listen(const char *, const char *, struct addrinfo);
-# if defined(TLS)
-void	readwrite(int, struct tls *);
-# else
-void	readwrite(int);
-# endif
-void	fdpass(int nfd) __attribute__((noreturn));
-int	remote_connect(const char *, const char *, struct addrinfo, char *);
-# if defined(TLS)
-int	timeout_tls(int, struct tls *, int (*)(struct tls *));
-# endif
-int	timeout_connect(int, const struct sockaddr *, socklen_t);
-int	socks_connect(const char *, const char *, struct addrinfo,
-	    const char *, const char *, struct addrinfo, int, const char *);
-int	udptest(int);
-int	unix_bind(char *, int);
-int	unix_connect(char *);
-int	unix_listen(char *);
-void	set_common_sockopts(int, const struct sockaddr *);
-int	process_tos_opt(char *, int *);
-# if defined(TLS)
-int	process_tls_opt(char *, int *);
-void	save_peer_cert(struct tls *_tls_ctx, FILE *_fp);
-# endif
-void	report_sock(const char *, const struct sockaddr *, socklen_t, char *);
-# if defined(TLS)
-void	report_tls(struct tls *tls_ctx, char * host);
-# endif
-void	usage(int);
-# if defined(TLS)
-ssize_t drainbuf(int, unsigned char *, size_t *, struct tls *);
-ssize_t fillbuf(int, unsigned char *, size_t *, struct tls *);
-void	tls_setup_client(struct tls *, int, char *);
-struct tls *tls_setup_server(struct tls *, int, char *);
-# else
-ssize_t drainbuf(int, unsigned char *, size_t *, int);
-ssize_t fillbuf(int, unsigned char *, size_t *);
-# endif
-
-char *proto_name(int uflag, int dccpflag);
-static int connect_with_timeout(int fd, const struct sockaddr *sa,
-        socklen_t salen, int ctimeout);
-
-static void quit();
-
-int
-main(int argc, char *argv[])
-{
-	int ch, s = -1, ret, socksv;
-	char *host, **uport;
-	char ipaddr[NI_MAXHOST];
-	struct addrinfo hints;
-	struct servent *sv;
-	socklen_t len;
-	union {
-		struct sockaddr_storage storage;
-		struct sockaddr_un forunix;
-	} cliaddr;
-	char *proxy = NULL, *proxyport = NULL;
-	const char *errstr;
-	struct addrinfo proxyhints;
-	char unix_dg_tmp_socket_buf[UNIX_DG_TMP_SOCKET_SIZE];
-# if defined(TLS)
-	struct tls_config *tls_cfg = NULL;
-	struct tls *tls_ctx = NULL;
-# endif
-	uint32_t protocols;
-
-	ret = 1;
-	socksv = 5;
-	host = NULL;
-	uport = NULL;
-	sv = NULL;
-# if defined(TLS)
-	Rflag = tls_default_ca_cert_file();
-# endif
-
-	signal(SIGPIPE, SIG_IGN);
-
-	while ((ch = getopt(argc, argv,
-# if defined(TLS)
-	    "46bC:cDde:FH:hI:i:K:klM:m:NnO:o:P:p:q:R:rSs:T:tUuV:vW:w:X:x:Z:z"))
-# else
-	    "46bCDdFhI:i:klM:m:NnO:P:p:q:rSs:T:tUuV:vW:w:X:x:Zz"))
-# endif
-	    != -1) {
-		switch (ch) {
-		case '4':
-			family = AF_INET;
-			break;
-		case '6':
-			family = AF_INET6;
-			break;
-		case 'b':
-# if defined(SO_BROADCAST)
-			bflag = 1;
-# else
-			errx(1, "no broadcast frame support available");
-# endif
-			break;
-		case 'U':
-			family = AF_UNIX;
-			break;
-		case 'X':
-			if (strcasecmp(optarg, "connect") == 0)
-				socksv = -1; /* HTTP proxy CONNECT */
-			else if (strcmp(optarg, "4") == 0)
-				socksv = 4; /* SOCKS v.4 */
-			else if (strcmp(optarg, "5") == 0)
-				socksv = 5; /* SOCKS v.5 */
-			else
-				errx(1, "unsupported proxy protocol");
-			break;
-# if defined(TLS)
-		case 'C':
-			Cflag = optarg;
-			break;
-		case 'c':
-			usetls = 1;
-			break;
-# else
-		case 'C':
-			Cflag = 1;
-			break;
-# endif
-		case 'd':
-			dflag = 1;
-			break;
-# if defined(TLS)
-		case 'e':
-			tls_expectname = optarg;
-			break;
-# endif
-		case 'F':
-			Fflag = 1;
-			break;
-# if defined(TLS)
-		case 'H':
-			tls_expecthash = optarg;
-			break;
-# endif
-		case 'h':
-			help();
-			break;
-		case 'i':
-			iflag = strtonum(optarg, 0, UINT_MAX, &errstr);
-			if (errstr)
-				errx(1, "interval %s: %s", errstr, optarg);
-			break;
-# if defined(TLS)
-		case 'K':
-			Kflag = optarg;
-			break;
-# endif
-		case 'k':
-			kflag = 1;
-			break;
-		case 'l':
-			lflag = 1;
-			break;
-		case 'M':
-			ttl = strtonum(optarg, 0, 255, &errstr);
-			if (errstr)
-				errx(1, "ttl is %s", errstr);
-			break;
-		case 'm':
-			minttl = strtonum(optarg, 0, 255, &errstr);
-			if (errstr)
-				errx(1, "minttl is %s", errstr);
-			break;
-		case 'N':
-			Nflag = 1;
-			break;
-		case 'n':
-			nflag = 1;
-			break;
-		case 'P':
-			Pflag = optarg;
-			break;
-		case 'p':
-			pflag = optarg;
-			break;
-		case 'q':
-			qflag = strtonum(optarg, INT_MIN, INT_MAX, &errstr);
-			if (errstr)
-				errx(1, "quit timer %s: %s", errstr, optarg);
-			if (qflag >= 0)
-				Nflag = 1;
-			break;
-# if defined(TLS)
-		case 'R':
-			tls_cachanged = 1;
-			Rflag = optarg;
-			break;
-# endif
-		case 'r':
-			rflag = 1;
-			break;
-		case 's':
-			sflag = optarg;
-			break;
-		case 't':
-			tflag = 1;
-			break;
-		case 'u':
-			uflag = 1;
-			break;
-		case 'Z':
-# if defined(IPPROTO_DCCP) && defined(SOCK_DCCP)
-			dccpflag = 1;
-# else
-			errx(1, "no DCCP support available");
-# endif
-			break;
-		case 'V':
-# if defined(RT_TABLEID_MAX)
-			rtableid = (int)strtonum(optarg, 0,
-			    RT_TABLEID_MAX, &errstr);
-			if (errstr)
-				errx(1, "rtable %s: %s", errstr, optarg);
-# else
-			errx(1, "no alternate routing table support available");
-# endif
-			break;
-		case 'v':
-			vflag = 1;
-			break;
-		case 'W':
-			recvlimit = strtonum(optarg, 1, INT_MAX, &errstr);
-			if (errstr)
-				errx(1, "receive limit %s: %s", errstr, optarg);
-			break;
-		case 'w':
-			timeout = strtonum(optarg, 0, INT_MAX / 1000, &errstr);
-			if (errstr)
-				errx(1, "timeout %s: %s", errstr, optarg);
-			timeout *= 1000;
-			break;
-		case 'x':
-			xflag = 1;
-			if ((proxy = strdup(optarg)) == NULL)
-				err(1, NULL);
-			break;
-# if defined(TLS)
-		case 'Z':
-			if (strcmp(optarg, "-") == 0)
-				Zflag = stderr;
-			else if ((Zflag = fopen(optarg, "w")) == NULL)
-				err(1, "can't open %s", optarg);
-			break;
-# endif
-		case 'z':
-			zflag = 1;
-			break;
-		case 'D':
-			Dflag = 1;
-			break;
-		case 'I':
-			Iflag = strtonum(optarg, 1, 65536 << 14, &errstr);
-			if (errstr != NULL)
-				errx(1, "TCP receive window %s: %s",
-				    errstr, optarg);
-			break;
-		case 'O':
-			Oflag = strtonum(optarg, 1, 65536 << 14, &errstr);
-			if (errstr != NULL)
-				errx(1, "TCP send window %s: %s",
-				    errstr, optarg);
-			break;
-# if defined(TLS)
-		case 'o':
-			oflag = optarg;
-			break;
-# endif
-		case 'S':
-# if defined(TCP_MD5SIG_EXT) && defined(TCP_MD5SIG_MAXKEYLEN)
-			if (readpassphrase("TCP MD5SIG password: ",
-			                   Sflag_password, TCP_MD5SIG_MAXKEYLEN, RPP_REQUIRE_TTY) == NULL)
-				errx(1, "Unable to read TCP MD5SIG password");
-			Sflag = 1;
-# else
-			errx(1, "no TCP MD5 signature support available");
-# endif
-			break;
-		case 'T':
-			errstr = NULL;
-			errno = 0;
-# if defined(TLS)
-			if (process_tls_opt(optarg, &TLSopt))
-				break;
-# endif
-			if (process_tos_opt(optarg, &Tflag))
-				break;
-			if (strlen(optarg) > 1 && optarg[0] == '0' &&
-			    optarg[1] == 'x')
-				Tflag = (int)strtol(optarg, NULL, 16);
-			else
-				Tflag = (int)strtonum(optarg, 0, 255,
-				    &errstr);
-			if (Tflag < 0 || Tflag > 255 || errstr || errno)
-# if defined(TLS)
-				errx(1, "illegal tos/tls value %s", optarg);
-# else
-				errx(1, "illegal tos value %s", optarg);
-# endif
-			break;
-		default:
-			usage(1);
-		}
-	}
-	argc -= optind;
-	argv += optind;
-
-# if defined(RT_TABLEID_MAX)
-	if (rtableid >= 0)
-		if (setrtable(rtableid) == -1)
-			err(1, "setrtable");
-# endif
-
-	/* Cruft to make sure options are clean, and used properly. */
-	if (argc == 0 && lflag) {
-		uport = &pflag;
-		host = sflag;
-	} else if (argc == 1 && !pflag &&
-			/* `nc -l 12345` or `nc -U bar` or `nc -uU -s foo bar` */
-			(!sflag || (family == AF_UNIX && uflag && !lflag))) {
-		if (family == AF_UNIX) {
-			host = argv[0];
-			uport = NULL;
-		} else if (lflag) {
-			host  = NULL;
-			uport = argv;
-		}
-	} else if (argc >= 2) {
-		if (lflag && (pflag || sflag || argc > 2))
-			usage(1); /* conflict */
-		host = argv[0];
-		uport = &argv[1];
-	} else
-		usage(1);
-
-	if (family == AF_UNIX) {
-# if defined(IPPROTO_DCCP) && defined(SOCK_DCCP)
-		if (dccpflag)
-			errx(1, "cannot use -Z and -U");
-# endif
-		if (uport && *uport)
-			errx(1, "cannot use port with -U");
-		if (!host)
-			errx(1, "missing socket pathname");
-	} else if (!uport || !*uport)
-		errx(1, "missing port number");
-
-	if (lflag && zflag)
-		errx(1, "cannot use -z and -l");
-
-# if defined(TLS)
-	if (usetls) {
-		if (Cflag && unveil(Cflag, "r") == -1)
-			err(1, "unveil");
-		if (unveil(Rflag, "r") == -1)
-			err(1, "unveil");
-		if (Kflag && unveil(Kflag, "r") == -1)
-			err(1, "unveil");
-		if (oflag && unveil(oflag, "r") == -1)
-			err(1, "unveil");
-	} else if (family == AF_UNIX && uflag && lflag && !kflag) {
-		/*
-		 * After recvfrom(2) from client, the server connects
-		 * to the client socket.  As the client path is determined
-		 * during runtime, we cannot unveil(2).
-		 */
-	} else {
-		if (family == AF_UNIX) {
-			if (unveil(host, "rwc") == -1)
-				err(1, "unveil");
-			if (uflag && !kflag) {
-				if (sflag) {
-					if (unveil(sflag, "rwc") == -1)
-						err(1, "unveil");
-				} else {
-					if (unveil("/tmp", "rwc") == -1)
-						err(1, "unveil");
-				}
-			}
-		} else {
-			/* no filesystem visibility */
-			if (unveil("/", "") == -1)
-				err(1, "unveil");
-		}
-	}
-# endif
-
-	if (!lflag && kflag)
-		errx(1, "must use -l with -k");
-# if defined(TLS)
-	if (uflag && usetls)
-		errx(1, "cannot use -c and -u");
-	if ((family == AF_UNIX) && usetls)
-		errx(1, "cannot use -c and -U");
-# endif
-	if ((family == AF_UNIX) && Fflag)
-		errx(1, "cannot use -F and -U");
-# if defined(TLS)
-	if (Fflag && usetls)
-		errx(1, "cannot use -c and -F");
-	if (TLSopt && !usetls)
-		errx(1, "you must specify -c to use TLS options");
-	if (Cflag && !usetls)
-		errx(1, "you must specify -c to use -C");
-	if (Kflag && !usetls)
-		errx(1, "you must specify -c to use -K");
-	if (Zflag && !usetls)
-		errx(1, "you must specify -c to use -Z");
-	if (oflag && !Cflag)
-		errx(1, "you must specify -C to use -o");
-	if (tls_cachanged && !usetls)
-		errx(1, "you must specify -c to use -R");
-	if (tls_expecthash && !usetls)
-		errx(1, "you must specify -c to use -H");
-	if (tls_expectname && !usetls)
-		errx(1, "you must specify -c to use -e");
-# endif
-
-	/* Get name of temporary socket for unix datagram client */
-	if ((family == AF_UNIX) && uflag && !lflag) {
-		if (sflag) {
-			unix_dg_tmp_socket = sflag;
-		} else {
-			strlcpy(unix_dg_tmp_socket_buf, "/tmp/nc.XXXXXXXXXX",
-			    UNIX_DG_TMP_SOCKET_SIZE);
-			if (mkstemp(unix_dg_tmp_socket_buf) == -1)
-				err(1, "mkstemp");
-			unix_dg_tmp_socket = unix_dg_tmp_socket_buf;
-		}
-	}
-
-	/* Initialize addrinfo structure. */
-	if (family != AF_UNIX) {
-		memset(&hints, 0, sizeof(struct addrinfo));
-		hints.ai_family = family;
-		if (uflag) {
-		    hints.ai_socktype = SOCK_DGRAM;
-		    hints.ai_protocol = IPPROTO_UDP;
-		}
-# if defined(IPPROTO_DCCP) && defined(SOCK_DCCP)
-		else if (dccpflag) {
-		    hints.ai_socktype = SOCK_DCCP;
-		    hints.ai_protocol = IPPROTO_DCCP;
-		}
-# endif
-		else {
-		    hints.ai_socktype = SOCK_STREAM;
-		    hints.ai_protocol = IPPROTO_TCP;
-		}
-		if (nflag)
-			hints.ai_flags |= AI_NUMERICHOST;
-	}
-
-	if (xflag) {
-		if (uflag)
-			errx(1, "no proxy support for UDP mode");
-# if defined(IPPROTO_DCCP) && defined(SOCK_DCCP)
-		if (dccpflag)
-			errx(1, "no proxy support for DCCP mode");
-# endif
-		if (lflag)
-			errx(1, "no proxy support for listen");
-
-		if (family == AF_UNIX)
-			errx(1, "no proxy support for unix sockets");
-
-		if (sflag)
-			errx(1, "no proxy support for local source address");
-
-		if (*proxy == '[') {
-			++proxy;
-			proxyport = strchr(proxy, ']');
-			if (proxyport == NULL)
-				errx(1, "missing closing bracket in proxy");
-			*proxyport++ = '\0';
-			if (*proxyport == '\0')
-				/* Use default proxy port. */
-				proxyport = NULL;
-			else {
-				if (*proxyport == ':')
-					++proxyport;
-				else
-					errx(1, "garbage proxy port delimiter");
-			}
-		} else {
-			proxyport = strrchr(proxy, ':');
-			if (proxyport != NULL)
-				*proxyport++ = '\0';
-		}
-
-		memset(&proxyhints, 0, sizeof(struct addrinfo));
-		proxyhints.ai_family = family;
-		proxyhints.ai_socktype = SOCK_STREAM;
-		proxyhints.ai_protocol = IPPROTO_TCP;
-		if (nflag)
-			proxyhints.ai_flags |= AI_NUMERICHOST;
-	}
-
-# if defined(TLS)
-	if (usetls) {
-		if ((tls_cfg = tls_config_new()) == NULL)
-			errx(1, "unable to allocate TLS config");
-		if (Rflag && tls_config_set_ca_file(tls_cfg, Rflag) == -1)
-			errx(1, "%s", tls_config_error(tls_cfg));
-		if (Cflag && tls_config_set_cert_file(tls_cfg, Cflag) == -1)
-			errx(1, "%s", tls_config_error(tls_cfg));
-		if (Kflag && tls_config_set_key_file(tls_cfg, Kflag) == -1)
-			errx(1, "%s", tls_config_error(tls_cfg));
-		if (oflag && tls_config_set_ocsp_staple_file(tls_cfg, oflag) == -1)
-			errx(1, "%s", tls_config_error(tls_cfg));
-		if (tls_config_parse_protocols(&protocols, tls_protocols) == -1)
-			errx(1, "invalid TLS protocols `%s'", tls_protocols);
-		if (tls_config_set_protocols(tls_cfg, protocols) == -1)
-			errx(1, "%s", tls_config_error(tls_cfg));
-		if (tls_config_set_ciphers(tls_cfg, tls_ciphers) == -1)
-			errx(1, "%s", tls_config_error(tls_cfg));
-		if (!lflag && (TLSopt & TLS_CCERT))
-			errx(1, "clientcert is only valid with -l");
-		if (TLSopt & TLS_NONAME)
-			tls_config_insecure_noverifyname(tls_cfg);
-		if (TLSopt & TLS_NOVERIFY) {
-			if (tls_expecthash != NULL)
-				errx(1, "-H and -T noverify may not be used "
-				    "together");
-			tls_config_insecure_noverifycert(tls_cfg);
-		}
-		if (TLSopt & TLS_MUSTSTAPLE)
-			tls_config_ocsp_require_stapling(tls_cfg);
-
-		if (Pflag) {
-			if (pledge("stdio inet dns tty", NULL) == -1)
-				err(1, "pledge");
-		} else if (pledge("stdio inet dns", NULL) == -1)
-			err(1, "pledge");
- 	}
-# endif
-	if (lflag) {
-		ret = 0;
-
-		if (family == AF_UNIX) {
-			if (uflag)
-				s = unix_bind(host, 0);
-			else
-				s = unix_listen(host);
-		} else
-			s = local_listen(host, *uport, hints);
-		if (s < 0)
-			err(1, NULL);
-
-# if defined(TLS)
-		if (usetls) {
-			tls_config_verify_client_optional(tls_cfg);
-			if ((tls_ctx = tls_server()) == NULL)
-				errx(1, "tls server creation failed");
-			if (tls_configure(tls_ctx, tls_cfg) == -1)
-				errx(1, "tls configuration failed (%s)",
-				    tls_error(tls_ctx));
-		}
-# endif
-		/* Allow only one connection at a time, but stay alive. */
-		for (;;) {
-			if (uflag && kflag) {
-				/*
-				 * For UDP and -k, don't connect the socket,
-				 * let it receive datagrams from multiple
-				 * socket pairs.
-				 */
-# if defined(TLS)
-				readwrite(s, NULL);
-# else
-				readwrite(s);
-# endif
-			} else if (uflag && !kflag) {
-				/*
-				 * For UDP and not -k, we will use recvfrom()
-				 * initially to wait for a caller, then use
-				 * the regular functions to talk to the caller.
-				 */
-				int rv;
-				char buf[2048];
-				struct sockaddr_storage z;
-
-				len = sizeof(z);
-				rv = recvfrom(s, buf, sizeof(buf), MSG_PEEK,
-				    (struct sockaddr *)&z, &len);
-				if (rv == -1)
-					err(1, "recvfrom");
-
-				rv = connect(s, (struct sockaddr *)&z, len);
-				if (rv == -1)
-					err(1, "connect");
-
-				if (vflag)
-					report_sock("Connection received",
-					    (struct sockaddr *)&z, len,
-					    family == AF_UNIX ? host : NULL);
-
-# if defined(TLS)
-				readwrite(s, NULL);
-			} else {
-				struct tls *tls_cctx = NULL;
-# else
-				readwrite(s);
- 			} else {
-# endif
-				int connfd;
-
-				len = sizeof(cliaddr);
-				connfd = accept4(s, (struct sockaddr *)&cliaddr,
-				    &len, SOCK_NONBLOCK);
-				if (connfd == -1) {
-					/* For now, all errnos are fatal */
-					err(1, "accept");
-				}
-				if (vflag)
-					report_sock("Connection received",
-					    (struct sockaddr *)&cliaddr, len,
-					    family == AF_UNIX ? host : NULL);
-# if defined(TLS)
-				if ((usetls) &&
-				    (tls_cctx = tls_setup_server(tls_ctx, connfd, host)))
-					readwrite(connfd, tls_cctx);
-				if (!usetls)
-					readwrite(connfd, NULL);
-				if (tls_cctx)
-					timeout_tls(s, tls_cctx, tls_close);
-				close(connfd);
-				tls_free(tls_cctx);
-# else
-				readwrite(connfd);
- 				close(connfd);
-# endif
-			}
-			if (family == AF_UNIX && uflag) {
-				if (connect(s, NULL, 0) == -1)
-					err(1, "connect");
-			}
-
-			if (!kflag) {
-				if (s != -1)
-					close(s);
-				break;
-			}
-		}
-	} else if (family == AF_UNIX) {
-		ret = 0;
-
-		if ((s = unix_connect(host)) > 0) {
-			if (!zflag)
-# if defined(TLS)
-				readwrite(s, NULL);
-# else
-				readwrite(s);
-# endif
-			close(s);
-		} else {
-			warn("%s", host);
-			ret = 1;
-		}
-
-		if (uflag)
-			unlink(unix_dg_tmp_socket);
-		return ret;
-
-	} else {
-		int i = 0;
-
-		/* Construct the portlist[] array. */
-		build_ports(uport);
-
-		/* Cycle through portlist, connecting to each port. */
-		for (s = -1, i = 0; portlist[i] != NULL; i++) {
-			if (s != -1)
-				close(s);
-# if defined(TLS)
-			tls_free(tls_ctx);
-			tls_ctx = NULL;
-
-			if (usetls) {
-				if ((tls_ctx = tls_client()) == NULL)
-					errx(1, "tls client creation failed");
-				if (tls_configure(tls_ctx, tls_cfg) == -1)
-					errx(1, "tls configuration failed (%s)",
-					    tls_error(tls_ctx));
-			}
-# endif
-			if (xflag)
-				s = socks_connect(host, portlist[i], hints,
-				    proxy, proxyport, proxyhints, socksv,
-				    Pflag);
-			else
-				s = remote_connect(host, portlist[i], hints,
-				    ipaddr);
-
-			if (s == -1)
-				continue;
-
-			ret = 0;
-			if (vflag) {
-				/* For UDP, make sure we are connected. */
-				if (uflag) {
-					if (udptest(s) == -1) {
-						ret = 1;
-						continue;
-					}
-				}
-
-				char *proto = proto_name(uflag, dccpflag);
-				/* Don't look up port if -n. */
-				if (nflag)
-					sv = NULL;
-				else {
-					sv = getservbyport(
-					    ntohs(atoi(portlist[i])),
-					    proto);
-				}
-
-				fprintf(stderr, "Connection to %s", host);
-
-				/*
-				 * if we aren't connecting thru a proxy and
-				 * there is something to report, print IP
-				 */
-				if (!nflag && !xflag
-				    && (strcmp(host, ipaddr) != 0))
-					fprintf(stderr, " (%s)", ipaddr);
-
-				fprintf(stderr, " %s port [%s/%s] succeeded!\n",
-				    portlist[i], proto,
-				    sv ? sv->s_name : "*");
-			}
-			if (Fflag)
-				fdpass(s);
-# if defined(TLS)
-			else {
-				if (usetls)
-					tls_setup_client(tls_ctx, s, host);
-				if (!zflag)
-					readwrite(s, tls_ctx);
-				if (tls_ctx)
-					timeout_tls(s, tls_ctx, tls_close);
-			}
-# else
-			else if (!zflag)
-				readwrite(s);
-# endif
-		}
-	}
-
-	if (s != -1)
-		close(s);
-# if defined(TLS)
-	tls_free(tls_ctx);
-	tls_config_free(tls_cfg);
-# endif
-
-	return ret;
-}
-
-/*
- * unix_bind()
- * Returns a unix socket bound to the given path
- */
-int
-unix_bind(char *path, int flags)
-{
-	struct sockaddr_un s_un;
-	int s, save_errno;
-
-	/* Create unix domain socket. */
-	if ((s = socket(AF_UNIX, flags | (uflag ? SOCK_DGRAM : SOCK_STREAM),
-	    0)) == -1)
-		return -1;
-
-	unlink(path);
-
-	memset(&s_un, 0, sizeof(struct sockaddr_un));
-	s_un.sun_family = AF_UNIX;
-
-	if (strlcpy(s_un.sun_path, path, sizeof(s_un.sun_path)) >=
-	    sizeof(s_un.sun_path)) {
-		close(s);
-		errno = ENAMETOOLONG;
-		return -1;
-	}
-
-	if (bind(s, (struct sockaddr *)&s_un, sizeof(s_un)) == -1) {
-		save_errno = errno;
-		close(s);
-		errno = save_errno;
-		return -1;
-	}
-	if (vflag)
-		report_sock("Bound", NULL, 0, path);
-
-	return s;
-}
-
-# if defined(TLS)
-int
-timeout_tls(int s, struct tls *tls_ctx, int (*func)(struct tls *))
-{
-	struct pollfd pfd;
-	int ret;
-
-	while ((ret = (*func)(tls_ctx)) != 0) {
-		if (ret == TLS_WANT_POLLIN)
-			pfd.events = POLLIN;
-		else if (ret == TLS_WANT_POLLOUT)
-			pfd.events = POLLOUT;
-		else
-			break;
-		pfd.fd = s;
-		if ((ret = poll(&pfd, 1, timeout)) == 1)
-			continue;
-		else if (ret == 0) {
-			errno = ETIMEDOUT;
-			ret = -1;
-			break;
-		} else
-			err(1, "poll failed");
-	}
-
-	return ret;
-}
-
-void
-tls_setup_client(struct tls *tls_ctx, int s, char *host)
-{
-	const char *errstr;
-
-	if (tls_connect_socket(tls_ctx, s,
-		tls_expectname ? tls_expectname : host) == -1) {
-		errx(1, "tls connection failed (%s)",
-		    tls_error(tls_ctx));
-	}
-	if (timeout_tls(s, tls_ctx, tls_handshake) == -1) {
-		if ((errstr = tls_error(tls_ctx)) == NULL)
-			errstr = strerror(errno);
-		errx(1, "tls handshake failed (%s)", errstr);
-	}
-	if (vflag)
-		report_tls(tls_ctx, host);
-	if (tls_expecthash && (tls_peer_cert_hash(tls_ctx) == NULL ||
-	    strcmp(tls_expecthash, tls_peer_cert_hash(tls_ctx)) != 0))
-		errx(1, "peer certificate is not %s", tls_expecthash);
-	if (Zflag) {
-		save_peer_cert(tls_ctx, Zflag);
-		if (Zflag != stderr && (fclose(Zflag) != 0))
-			err(1, "fclose failed saving peer cert");
-	}
-}
-
-struct tls *
-tls_setup_server(struct tls *tls_ctx, int connfd, char *host)
-{
-	struct tls *tls_cctx;
-	const char *errstr;
-
-	if (tls_accept_socket(tls_ctx, &tls_cctx, connfd) == -1) {
-		warnx("tls accept failed (%s)", tls_error(tls_ctx));
-	} else if (timeout_tls(connfd, tls_cctx, tls_handshake) == -1) {
-		if ((errstr = tls_error(tls_cctx)) == NULL)
-			errstr = strerror(errno);
-		warnx("tls handshake failed (%s)", errstr);
-	} else {
-		int gotcert = tls_peer_cert_provided(tls_cctx);
-
-		if (vflag && gotcert)
-			report_tls(tls_cctx, host);
-		if ((TLSopt & TLS_CCERT) && !gotcert)
-			warnx("No client certificate provided");
-		else if (gotcert && tls_expecthash &&
-		    (tls_peer_cert_hash(tls_cctx) == NULL ||
-		    strcmp(tls_expecthash, tls_peer_cert_hash(tls_cctx)) != 0))
-			warnx("peer certificate is not %s", tls_expecthash);
-		else if (gotcert && tls_expectname &&
-		    (!tls_peer_cert_contains_name(tls_cctx, tls_expectname)))
-			warnx("name (%s) not found in client cert",
-			    tls_expectname);
-		else {
-			return tls_cctx;
-		}
-	}
-	return NULL;
-}
-# endif
-
-/*
- * unix_connect()
- * Returns a socket connected to a local unix socket. Returns -1 on failure.
- */
-int
-unix_connect(char *path)
-{
-	struct sockaddr_un s_un;
-	int s, save_errno;
-
-	if (uflag) {
-		if ((s = unix_bind(unix_dg_tmp_socket, SOCK_CLOEXEC)) == -1)
-			return -1;
-	} else {
-		if ((s = socket(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0)) == -1) {
-			errx(1, "create unix socket failed");
-			return -1;
-		}
-	}
-
-	memset(&s_un, 0, sizeof(struct sockaddr_un));
-	s_un.sun_family = AF_UNIX;
-
-	if (strlcpy(s_un.sun_path, path, sizeof(s_un.sun_path)) >=
-	    sizeof(s_un.sun_path)) {
-		close(s);
-		errno = ENAMETOOLONG;
-		warn("unix connect abandoned");
-		return -1;
-	}
-	if (connect(s, (struct sockaddr *)&s_un, sizeof(s_un)) == -1) {
-		save_errno = errno;
-		warn("unix connect failed");
-		close(s);
-		errno = save_errno;
-		return -1;
-	}
-	return s;
-
-}
-
-/*
- * unix_listen()
- * Create a unix domain socket, and listen on it.
- */
-int
-unix_listen(char *path)
-{
-	int s;
-
-	if ((s = unix_bind(path, 0)) == -1)
-		return -1;
-	if (listen(s, 5) == -1) {
-		close(s);
-		return -1;
-	}
-	if (vflag)
-		report_sock("Listening", NULL, 0, path);
-
-	return s;
-}
-
-char *proto_name(int uflag, int dccpflag) {
-
-    char *proto = NULL;
-    if (uflag) {
-	proto = "udp";
-    }
-# if defined(IPPROTO_DCCP) && defined(SOCK_DCCP)
-    else if (dccpflag) {
-	proto = "dccp";
-    }
-# endif
-    else {
-	proto = "tcp";
-    }
-
-    return proto;
-}
-
-/*
- * remote_connect()
- * Returns a socket connected to a remote host. Properly binds to a local
- * port or source address if needed. Returns -1 on failure.
- */
-int
-remote_connect(const char *host, const char *port, struct addrinfo hints,
-    char *ipaddr)
-{
-	struct addrinfo *res, *res0;
-	int s = -1, error, herr, on = 1, save_errno;
-
-	if ((error = getaddrinfo(host, port, &hints, &res0)))
-		errx(1, "getaddrinfo for host \"%s\" port %s: %s", host,
-		    port, gai_strerror(error));
-
-	for (res = res0; res; res = res->ai_next) {
-		if ((s = socket(res->ai_family, res->ai_socktype |
-		    SOCK_NONBLOCK, res->ai_protocol)) == -1)
-			continue;
-
-		/* Bind to a local port or source address if specified. */
-		if (sflag || pflag) {
-			struct addrinfo ahints, *ares;
-
-# if defined (SO_BINDANY)
-			/* try SO_BINDANY, but don't insist */
-			setsockopt(s, SOL_SOCKET, SO_BINDANY, &on, sizeof(on));
-# endif
-			memset(&ahints, 0, sizeof(struct addrinfo));
-			ahints.ai_family = res->ai_family;
-			if (uflag) {
-			    ahints.ai_socktype = SOCK_DGRAM;
-			    ahints.ai_protocol = IPPROTO_UDP;
-
-			}
-# if defined(IPPROTO_DCCP) && defined(SOCK_DCCP)
-			else if (dccpflag) {
-			    hints.ai_socktype = SOCK_DCCP;
-			    hints.ai_protocol = IPPROTO_DCCP;
-			}
-# endif
-			else {
-		    	    ahints.ai_socktype = SOCK_STREAM;
-			    ahints.ai_protocol = IPPROTO_TCP;
-			}
-			ahints.ai_flags = AI_PASSIVE;
-			if ((error = getaddrinfo(sflag, pflag, &ahints, &ares)))
-				errx(1, "getaddrinfo: %s", gai_strerror(error));
-
-			if (bind(s, (struct sockaddr *)ares->ai_addr,
-			    ares->ai_addrlen) == -1)
-				err(1, "bind failed");
-			freeaddrinfo(ares);
-		}
-
-		set_common_sockopts(s, res->ai_addr);
-
-		if (ipaddr != NULL) {
-			herr = getnameinfo(res->ai_addr, res->ai_addrlen,
-			    ipaddr, NI_MAXHOST, NULL, 0, NI_NUMERICHOST);
-			switch (herr) {
-			case 0:
-				break;
-			case EAI_SYSTEM:
-				err(1, "getnameinfo");
-			default:
-				errx(1, "getnameinfo: %s", gai_strerror(herr));
-			}
-		}
-
-		if ((error = connect_with_timeout(s, res->ai_addr, res->ai_addrlen,
-		    timeout)) == CONNECTION_SUCCESS)
-			break;
-
-		char *proto = proto_name(uflag, dccpflag);
-
-		if (vflag) {
-			/* only print IP if there is something to report */
-			if (nflag || ipaddr == NULL ||
-			    (strncmp(host, ipaddr, NI_MAXHOST) == 0))
-				warn("connect to %s port %s (%s) %s", host,
-				    port, proto,
-				    error == CONNECTION_TIMEOUT ? "timed out" : "failed");
-			else
-				warn("connect to %s (%s) port %s (%s) %s",
-				    host, ipaddr, port, proto,
-				    error == CONNECTION_TIMEOUT ? "timed out" : "failed");
-		}
-
-		save_errno = errno;
-		close(s);
-		errno = save_errno;
-		s = -1;
-	}
-
-	freeaddrinfo(res0);
-
-	return s;
-}
-
-int
-timeout_connect(int s, const struct sockaddr *name, socklen_t namelen)
-{
-	struct pollfd pfd;
-	socklen_t optlen;
-	int optval;
-	int ret;
-
-	if ((ret = connect(s, name, namelen)) != 0 && errno == EINPROGRESS) {
-		pfd.fd = s;
-		pfd.events = POLLOUT;
-		if ((ret = poll(&pfd, 1, timeout)) == 1) {
-			optlen = sizeof(optval);
-			if ((ret = getsockopt(s, SOL_SOCKET, SO_ERROR,
-			    &optval, &optlen)) == 0) {
-				errno = optval;
-				ret = optval == 0 ? 0 : -1;
-			}
-		} else if (ret == 0) {
-			errno = ETIMEDOUT;
-			ret = -1;
-		} else
-			err(1, "poll failed");
-	}
-
-	return ret;
-}
-
-static int connect_with_timeout(int fd, const struct sockaddr *sa,
-		                socklen_t salen, int ctimeout)
-{
-	int err;
-	struct timeval tv, *tvp = NULL;
-	fd_set connect_fdset;
-	socklen_t len;
-	int orig_flags;
-
-	orig_flags = fcntl(fd, F_GETFL, 0);
-	if (fcntl(fd, F_SETFL, orig_flags | O_NONBLOCK) < 0 ) {
-		warn("can't set O_NONBLOCK - timeout not available");
-		if (connect(fd, sa, salen) == 0)
-			return CONNECTION_SUCCESS;
-		else
-			return CONNECTION_FAILED;
-	}
-
-	/* set connect timeout */
-	if (ctimeout > 0) {
-		tv.tv_sec = (time_t)ctimeout/1000;
-		tv.tv_usec = 0;
-		tvp = &tv;
-	}
-
-	/* attempt the connection */
-	err = connect(fd, sa, salen);
-	if (err != 0 && errno == EINPROGRESS) {
-		/* connection is proceeding
-		 * it is complete (or failed) when select returns */
-
-		/* initialize connect_fdset */
-		FD_ZERO(&connect_fdset);
-		FD_SET(fd, &connect_fdset);
-
-		/* call select */
-		do {
-			err = select(fd + 1, NULL, &connect_fdset,
-				     NULL, tvp);
-		} while (err < 0 && errno == EINTR);
-
-		/* select error */
-		if (err < 0)
-			errx(1,"select error: %s", strerror(errno));
-		/* we have reached a timeout */
-		if (err == 0)
-			return CONNECTION_TIMEOUT;
-		/* select returned successfully, but we must test socket
-		 * error for result */
-		len = sizeof(err);
-		if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &err, &len) < 0)
-			errx(1, "getsockopt error: %s", strerror(errno));
-		/* setup errno according to the result returned by
-		 * getsockopt */
-		if (err != 0)
-			errno = err;
-	}
-
-	/* return aborted if an error occured, and valid otherwise */
-	fcntl(fd, F_SETFL, orig_flags);
-	return (err != 0)? CONNECTION_FAILED : CONNECTION_SUCCESS;
-}
-
-/*
- * local_listen()
- * Returns a socket listening on a local port, binds to specified source
- * address. Returns -1 on failure.
- */
-int
-local_listen(const char *host, const char *port, struct addrinfo hints)
-{
-	struct addrinfo *res, *res0;
-	int s = -1, ret, x = 1, save_errno;
-	int error;
-
-	/* Allow nodename to be null. */
-	hints.ai_flags |= AI_PASSIVE;
-
-	/*
-	 * In the case of binding to a wildcard address
-	 * default to binding to an ipv4 address.
-	 */
-	if (host == NULL && hints.ai_family == AF_UNSPEC)
-		hints.ai_family = AF_INET;
-
-	if ((error = getaddrinfo(host, port, &hints, &res0)))
-		errx(1, "getaddrinfo: %s", gai_strerror(error));
-
-	for (res = res0; res; res = res->ai_next) {
-		if ((s = socket(res->ai_family, res->ai_socktype,
-		    res->ai_protocol)) == -1)
-			continue;
-
-		ret = setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &x, sizeof(x));
-		if (ret == -1)
-			err(1, NULL);
-
-# if defined(SO_REUSEPORT)
-		ret = setsockopt(s, SOL_SOCKET, SO_REUSEPORT, &x, sizeof(x));
-		if (ret == -1)
-			err(1, NULL);
-# endif
-
-		set_common_sockopts(s, res->ai_addr);
-
-		if (bind(s, (struct sockaddr *)res->ai_addr,
-		    res->ai_addrlen) == 0)
-			break;
-
-		save_errno = errno;
-		close(s);
-		errno = save_errno;
-		s = -1;
-	}
-
-	if (!uflag && s != -1) {
-		if (listen(s, 1) == -1)
-			err(1, "listen");
-	}
-	if (vflag && s != -1) {
-		struct sockaddr_storage ss;
-		socklen_t len;
-
-		len = sizeof(ss);
-		if (getsockname(s, (struct sockaddr *)&ss, &len) == -1)
-			err(1, "getsockname");
-		report_sock(uflag ? "Bound" : "Listening",
-		    (struct sockaddr *)&ss, len, NULL);
-	}
-
-	freeaddrinfo(res0);
-
-	return s;
-}
-
-/*
- * readwrite()
- * Loop that polls on the network file descriptor and stdin.
- */
-void
-# if defined(TLS)
-readwrite(int net_fd, struct tls *tls_ctx)
-# else
-readwrite(int net_fd)
-# endif
-{
-	struct pollfd pfd[4];
-	int stdin_fd = STDIN_FILENO;
-	int stdout_fd = STDOUT_FILENO;
-	unsigned char netinbuf[BUFSIZE];
-	size_t netinbufpos = 0;
-	unsigned char stdinbuf[BUFSIZE];
-	size_t stdinbufpos = 0;
-	int n, num_fds;
-	ssize_t ret;
-
-	/* don't read from stdin if requested */
-	if (dflag)
-		stdin_fd = -1;
-
-	/* stdin */
-	pfd[POLL_STDIN].fd = stdin_fd;
-	pfd[POLL_STDIN].events = POLLIN;
-
-	/* network out */
-	pfd[POLL_NETOUT].fd = net_fd;
-	pfd[POLL_NETOUT].events = 0;
-
-	/* network in */
-	pfd[POLL_NETIN].fd = net_fd;
-	pfd[POLL_NETIN].events = POLLIN;
-
-	/* stdout */
-	pfd[POLL_STDOUT].fd = stdout_fd;
-	pfd[POLL_STDOUT].events = 0;
-
-	while (1) {
-		/* both inputs are gone, buffers are empty, we are done */
-		if (pfd[POLL_STDIN].fd == -1 && pfd[POLL_NETIN].fd == -1 &&
-		    stdinbufpos == 0 && netinbufpos == 0) {
-			if (qflag <= 0)
-				return;
-			goto delay_exit;
-		}
-		/* both outputs are gone, we can't continue */
-		if (pfd[POLL_NETOUT].fd == -1 && pfd[POLL_STDOUT].fd == -1) {
-			if (qflag <= 0)
-				return;
-			goto delay_exit;
-		}
-		/* listen and net in gone, queues empty, done */
-		if (lflag && pfd[POLL_NETIN].fd == -1 &&
-		    stdinbufpos == 0 && netinbufpos == 0) {
-			if (qflag <= 0)
-				return;
-delay_exit:
-			close(net_fd);
-			signal(SIGALRM, quit);
-			alarm(qflag);
-		}
-
-		/* poll */
-		num_fds = poll(pfd, 4, timeout);
-
-		/* treat poll errors */
-		if (num_fds == -1)
-			err(1, "polling error");
-
-		/* timeout happened */
-		if (num_fds == 0)
-			return;
-
-		/* treat socket error conditions */
-		for (n = 0; n < 4; n++) {
-			if (pfd[n].revents & (POLLERR|POLLNVAL)) {
-				pfd[n].fd = -1;
-			}
-		}
-		/* reading is possible after HUP */
-		if (pfd[POLL_STDIN].events & POLLIN &&
-		    pfd[POLL_STDIN].revents & POLLHUP &&
-		    !(pfd[POLL_STDIN].revents & POLLIN))
-			pfd[POLL_STDIN].fd = -1;
-
-		if (pfd[POLL_NETIN].events & POLLIN &&
-		    pfd[POLL_NETIN].revents & POLLHUP &&
-		    !(pfd[POLL_NETIN].revents & POLLIN))
-			pfd[POLL_NETIN].fd = -1;
-
-		if (pfd[POLL_NETOUT].revents & POLLHUP) {
-			if (Nflag)
-				shutdown(pfd[POLL_NETOUT].fd, SHUT_WR);
-			pfd[POLL_NETOUT].fd = -1;
-		}
-		/* if HUP, stop watching stdout */
-		if (pfd[POLL_STDOUT].revents & POLLHUP)
-			pfd[POLL_STDOUT].fd = -1;
-		/* if no net out, stop watching stdin */
-		if (pfd[POLL_NETOUT].fd == -1)
-			pfd[POLL_STDIN].fd = -1;
-		/* if no stdout, stop watching net in */
-		if (pfd[POLL_STDOUT].fd == -1) {
-			if (pfd[POLL_NETIN].fd != -1)
-				shutdown(pfd[POLL_NETIN].fd, SHUT_RD);
-			pfd[POLL_NETIN].fd = -1;
-		}
-
-		/* try to read from stdin */
-		if (pfd[POLL_STDIN].revents & POLLIN && stdinbufpos < BUFSIZE) {
-			ret = fillbuf(pfd[POLL_STDIN].fd, stdinbuf,
-# if defined(TLS)
-			    &stdinbufpos, NULL);
-			if (ret == TLS_WANT_POLLIN)
-				pfd[POLL_STDIN].events = POLLIN;
-			else if (ret == TLS_WANT_POLLOUT)
-				pfd[POLL_STDIN].events = POLLOUT;
-			else
-# else
-			    &stdinbufpos);
-# endif
-			if (ret == 0 || ret == -1)
-				pfd[POLL_STDIN].fd = -1;
-			/* read something - poll net out */
-			if (stdinbufpos > 0)
-				pfd[POLL_NETOUT].events = POLLOUT;
-			/* filled buffer - remove self from polling */
-			if (stdinbufpos == BUFSIZE)
-				pfd[POLL_STDIN].events = 0;
-		}
-		/* try to write to network */
-		if (pfd[POLL_NETOUT].revents & POLLOUT && stdinbufpos > 0) {
-			ret = drainbuf(pfd[POLL_NETOUT].fd, stdinbuf,
-# if defined(TLS)
-			    &stdinbufpos, tls_ctx);
-			if (ret == TLS_WANT_POLLIN)
-				pfd[POLL_NETOUT].events = POLLIN;
-			else if (ret == TLS_WANT_POLLOUT)
-				pfd[POLL_NETOUT].events = POLLOUT;
-			else
-# else
-			    &stdinbufpos, (iflag || Cflag) ? 1 : 0);
-# endif
-			if (ret == -1)
-				pfd[POLL_NETOUT].fd = -1;
-			/* buffer empty - remove self from polling */
-			if (stdinbufpos == 0)
-				pfd[POLL_NETOUT].events = 0;
-			/* buffer no longer full - poll stdin again */
-			if (stdinbufpos < BUFSIZE)
-				pfd[POLL_STDIN].events = POLLIN;
-		}
-		/* try to read from network */
-		if (pfd[POLL_NETIN].revents & POLLIN && netinbufpos < BUFSIZE) {
-			ret = fillbuf(pfd[POLL_NETIN].fd, netinbuf,
-# if defined(TLS)
-			    &netinbufpos, tls_ctx);
-			if (ret == TLS_WANT_POLLIN)
-				pfd[POLL_NETIN].events = POLLIN;
-			else if (ret == TLS_WANT_POLLOUT)
-				pfd[POLL_NETIN].events = POLLOUT;
-			else
-# else
-			    &netinbufpos);
-# endif
-			if (ret == -1)
-				pfd[POLL_NETIN].fd = -1;
-			/* eof on net in - remove from pfd */
-			if (ret == 0) {
-				shutdown(pfd[POLL_NETIN].fd, SHUT_RD);
-				pfd[POLL_NETIN].fd = -1;
-			}
-			if (recvlimit > 0 && ++recvcount >= recvlimit) {
-				if (pfd[POLL_NETIN].fd != -1)
-					shutdown(pfd[POLL_NETIN].fd, SHUT_RD);
-				pfd[POLL_NETIN].fd = -1;
-				pfd[POLL_STDIN].fd = -1;
-			}
-			/* read something - poll stdout */
-			if (netinbufpos > 0)
-				pfd[POLL_STDOUT].events = POLLOUT;
-			/* filled buffer - remove self from polling */
-			if (netinbufpos == BUFSIZE)
-				pfd[POLL_NETIN].events = 0;
-			/* handle telnet */
-			if (tflag)
-				atelnet(pfd[POLL_NETIN].fd, netinbuf,
-				    netinbufpos);
-		}
-		/* try to write to stdout */
-		if (pfd[POLL_STDOUT].revents & POLLOUT && netinbufpos > 0) {
-			ret = drainbuf(pfd[POLL_STDOUT].fd, netinbuf,
-# if defined(TLS)
-			    &netinbufpos, NULL);
-			if (ret == TLS_WANT_POLLIN)
-				pfd[POLL_STDOUT].events = POLLIN;
-			else if (ret == TLS_WANT_POLLOUT)
-				pfd[POLL_STDOUT].events = POLLOUT;
-			else
-# else
-			    &netinbufpos, 0);
-# endif
-			if (ret == -1)
-				pfd[POLL_STDOUT].fd = -1;
-			/* buffer empty - remove self from polling */
-			if (netinbufpos == 0)
-				pfd[POLL_STDOUT].events = 0;
-			/* buffer no longer full - poll net in again */
-			if (netinbufpos < BUFSIZE)
-				pfd[POLL_NETIN].events = POLLIN;
-		}
-
-		/* stdin gone and queue empty? */
-		if (pfd[POLL_STDIN].fd == -1 && stdinbufpos == 0) {
-			if (pfd[POLL_NETOUT].fd != -1 && Nflag)
-				shutdown(pfd[POLL_NETOUT].fd, SHUT_WR);
-			pfd[POLL_NETOUT].fd = -1;
- 			/* #817050: handle UDP sockets and kflag */
-			if ((lflag || uflag) && pfd[POLL_NETIN].fd != -1 &&
-			    qflag >= 0 && netinbufpos == 0) {
-				shutdown(pfd[POLL_NETIN].fd, SHUT_RD);
-				pfd[POLL_NETIN].fd = -1;
-				kflag = 0;
-			}
-		}
-		/* net in gone and queue empty? */
-		if (pfd[POLL_NETIN].fd == -1 && netinbufpos == 0) {
-			pfd[POLL_STDOUT].fd = -1;
-		}
-	}
-}
-
-ssize_t
-drainbuf(int fd, unsigned char *buf, size_t *bufpos, int oneline)
-{
-	ssize_t n, r;
-	ssize_t adjust;
-	unsigned char *lf = NULL;
-
-	if (oneline)
-		lf = memchr(buf, '\n', *bufpos);
-	if (lf == NULL) {
-		n = *bufpos;
-		oneline = 0;
-	}
-	else if (Cflag && (lf == buf || buf[lf - buf - 1] != '\r')) {
-		n = lf - buf;
-		oneline = 2;
-	}
-	else
-		n = lf - buf + 1;
-	if (n > 0)
-		n = write(fd, buf, n);
-
-	/* don't treat EAGAIN, EINTR as error */
-	if (n == -1 && (errno == EAGAIN || errno == EINTR))
-		n = -2;
-	if (oneline == 2 && n >= 0)
-		n++;
-	if (n <= 0)
-		return n;
-
-	if (oneline == 2 && (r = atomicio(vwrite, fd, "\r\n", 2)) != 2)
-		err(1, "write failed (%zu/2)", r);
-	if (oneline > 0 && iflag)
-		sleep(iflag);
-
-	/* adjust buffer */
-	adjust = *bufpos - n;
-	if (adjust > 0)
-		memmove(buf, buf + n, adjust);
-	*bufpos -= n;
-	return n;
-}
-
-ssize_t
-# if defined(TLS)
-fillbuf(int fd, unsigned char *buf, size_t *bufpos, struct tls *tls)
-# else
-fillbuf(int fd, unsigned char *buf, size_t *bufpos)
-# endif
-{
-	size_t num = BUFSIZE - *bufpos;
-	ssize_t n;
-
-# if defined(TLS)
-	if (tls) {
-		n = tls_read(tls, buf + *bufpos, num);
-		if (n == -1)
-			errx(1, "tls read failed (%s)", tls_error(tls));
-	} else {
-# endif
-		n = read(fd, buf + *bufpos, num);
-		/* don't treat EAGAIN, EINTR as error */
-		if (n == -1 && (errno == EAGAIN || errno == EINTR))
-# if defined(TLS)
-			n = TLS_WANT_POLLIN;
-	}
-# else
-			n = -2;
-# endif
-	if (n <= 0)
-		return n;
-	*bufpos += n;
-	return n;
-}
-
-/*
- * fdpass()
- * Pass the connected file descriptor to stdout and exit.
- */
-void
-fdpass(int nfd)
-{
-	struct msghdr mh;
-	union {
-		struct cmsghdr hdr;
-		char buf[CMSG_SPACE(sizeof(int))];
-	} cmsgbuf;
-	struct cmsghdr *cmsg;
-	struct iovec iov;
-	char c = '\0';
-	ssize_t r;
-	struct pollfd pfd;
-
-	/* Avoid obvious stupidity */
-	if (isatty(STDOUT_FILENO))
-		errx(1, "Cannot pass file descriptor to tty");
-
-	memset(&mh, 0, sizeof(mh));
-	memset(&cmsgbuf, 0, sizeof(cmsgbuf));
-	memset(&iov, 0, sizeof(iov));
-
-	mh.msg_control = (caddr_t)&cmsgbuf.buf;
-	mh.msg_controllen = sizeof(cmsgbuf.buf);
-	cmsg = CMSG_FIRSTHDR(&mh);
-	cmsg->cmsg_len = CMSG_LEN(sizeof(int));
-	cmsg->cmsg_level = SOL_SOCKET;
-	cmsg->cmsg_type = SCM_RIGHTS;
-	*(int *)CMSG_DATA(cmsg) = nfd;
-
-	iov.iov_base = &c;
-	iov.iov_len = 1;
-	mh.msg_iov = &iov;
-	mh.msg_iovlen = 1;
-
-	memset(&pfd, 0, sizeof(pfd));
-	pfd.fd = STDOUT_FILENO;
-	pfd.events = POLLOUT;
-	for (;;) {
-		r = sendmsg(STDOUT_FILENO, &mh, 0);
-		if (r == -1) {
-			if (errno == EAGAIN || errno == EINTR) {
-				if (poll(&pfd, 1, -1) == -1)
-					err(1, "poll");
-				continue;
-			}
-			err(1, "sendmsg");
-		} else if (r != 1)
-			errx(1, "sendmsg: unexpected return value %zd", r);
-		else
-			break;
-	}
-	exit(0);
-}
-
-/* Deal with RFC 854 WILL/WONT DO/DONT negotiation. */
-void
-atelnet(int nfd, unsigned char *buf, unsigned int size)
-{
-	unsigned char *p, *end;
-	unsigned char obuf[4];
-
-	if (size < 3)
-		return;
-	end = buf + size - 2;
-
-	for (p = buf; p < end; p++) {
-		if (*p != IAC)
-			continue;
-
-		obuf[0] = IAC;
-		p++;
-		if ((*p == WILL) || (*p == WONT))
-			obuf[1] = DONT;
-		else if ((*p == DO) || (*p == DONT))
-			obuf[1] = WONT;
-		else
-			continue;
-
-		p++;
-		obuf[2] = *p;
-		if (atomicio(vwrite, nfd, obuf, 3) != 3)
-			warn("Write Error!");
-	}
-}
-
-
-int
-strtoport(char *portstr, int udp)
-{
-	struct servent *entry;
-	const char *errstr;
-	char *proto;
-	int port = -1;
-
-	proto = udp ? "udp" : "tcp";
-
-	port = strtonum(portstr, 1, PORT_MAX, &errstr);
-	if (errstr == NULL)
-		return port;
-	if (errno != EINVAL)
-		errx(1, "port number %s: %s", errstr, portstr);
-	if ((entry = getservbyname(portstr, proto)) == NULL)
-		errx(1, "service \"%s\" unknown", portstr);
-	return ntohs(entry->s_port);
-}
-
-/*
- * build_ports()
- * Build an array of ports in portlist[], listing each port
- * that we should try to connect to.
- */
-void
-build_ports(char **p)
-{
-	struct servent *sv;
-	char *n;
-	int hi, lo, cp;
-	int x = 0;
-	int i;
-
-	char *proto = proto_name(uflag, dccpflag);
-	for (i = 0; p[i] != NULL; i++) {
-		sv = getservbyname(p[i], proto);
-		if (sv) {
-			if (asprintf(&portlist[x], "%d", ntohs(sv->s_port)) < 0)
-				err(1, "asprintf");
-			x++;
-		} else if (isdigit((unsigned char)*p[i]) && (n = strchr(p[i], '-')) != NULL) {
-			*n = '\0';
-			n++;
-
-			/* Make sure the ports are in order: lowest->highest. */
-			hi = strtoport(n, uflag);
-			lo = strtoport(p[i], uflag);
-			if (lo > hi) {
-				cp = hi;
-				hi = lo;
-				lo = cp;
-			}
-
-			/* Load ports sequentially. */
-			for (cp = lo; cp <= hi; cp++) {
-				if (asprintf(&portlist[x], "%d", cp) == -1)
-					err(1, "asprintf");
-				x++;
-			}
-		} else {
-			hi = strtoport(p[i], uflag);
-			if (asprintf(&portlist[x], "%d", hi) < 0)
-				err(1, "asprintf");
-			x++;
-		}
-	}
-
-	/*
-	 * Initialize portlist with a random permutation using
-	 * Fisher–Yates shuffle.
-	 */
-	if (rflag) {
-		for (i = x-1; i > 0; i--) {
-			cp = arc4random_uniform(i+1);
-			if (cp != i) {
-				n = portlist[i];
-				portlist[i] = portlist[cp];
-				portlist[cp] = n;
-			}
-		}
-	}
-}
-
-/*
- * udptest()
- * Do a few writes to see if the UDP port is there.
- * Fails once PF state table is full.
- */
-int
-udptest(int s)
-{
-	int i, t;
-
-	if ((write(s, "X", 1) != 1) ||
-	    ((write(s, "X", 1) != 1) && (errno == ECONNREFUSED)))
-		return -1;
-
-	/* Give the remote host some time to reply. */
-	for (i = 0, t = (timeout == -1) ? UDP_SCAN_TIMEOUT : (timeout / 1000);
-	     i < t; i++) {
-		sleep(1);
-		if ((write(s, "X", 1) != 1) && (errno == ECONNREFUSED))
-			return -1;
-	}
-	return 1;
-}
-
-void
-set_common_sockopts(int s, const struct sockaddr* sa)
-{
-	int x = 1;
-	int af = sa->sa_family;
-
-# if defined(SO_BROADCAST)
-	if (bflag) {
-		/* allow datagram sockets to send packets to a broadcast address
-		 * (this option has no effect on stream-oriented sockets) */
-		if (setsockopt(s, SOL_SOCKET, SO_BROADCAST,
-			&x, sizeof(x)) == -1)
-			err(1, NULL);
-	}
-# endif
-# if defined(TCP_MD5SIG_EXT) && defined(TCP_MD5SIG_MAXKEYLEN)
-	if (Sflag) {
-		struct tcp_md5sig sig;
-		memset(&sig, 0, sizeof(sig));
-		memcpy(&sig.tcpm_addr, sa, sizeof(struct sockaddr_storage));
-		sig.tcpm_keylen = TCP_MD5SIG_MAXKEYLEN < strlen(Sflag_password)
-			? TCP_MD5SIG_MAXKEYLEN
-			: strlen(Sflag_password);
-		memcpy(sig.tcpm_key, Sflag_password, sig.tcpm_keylen);
-		sig.tcpm_flags = TCP_MD5SIG_FLAG_PREFIX;
-		if (setsockopt(s, IPPROTO_TCP, TCP_MD5SIG_EXT,
-			&sig, sizeof(sig)) == -1)
-			err(1, NULL);
-	}
-# endif
-	if (Dflag) {
-		if (setsockopt(s, SOL_SOCKET, SO_DEBUG,
-			&x, sizeof(x)) == -1)
-			err(1, NULL);
-	}
-	if (Tflag != -1) {
-		if (af == AF_INET && setsockopt(s, IPPROTO_IP,
-		    IP_TOS, &Tflag, sizeof(Tflag)) == -1)
-			err(1, "set IP ToS");
-
-#if defined(IPV6_TCLASS)
-		else if (af == AF_INET6 && setsockopt(s, IPPROTO_IPV6,
-		    IPV6_TCLASS, &Tflag, sizeof(Tflag)) == -1)
-			err(1, "set IPv6 traffic class");
-#else
-		else if (af == AF_INET6)
-			errx(1, "can't set IPv6 traffic class (unavailable)");
-#endif
-	}
-	if (Iflag) {
-		if (setsockopt(s, SOL_SOCKET, SO_RCVBUF,
-		    &Iflag, sizeof(Iflag)) == -1)
-			err(1, "set TCP receive buffer size");
-	}
-	if (Oflag) {
-		if (setsockopt(s, SOL_SOCKET, SO_SNDBUF,
-		    &Oflag, sizeof(Oflag)) == -1)
-			err(1, "set TCP send buffer size");
-	}
-
-	if (ttl != -1) {
-		if (af == AF_INET && setsockopt(s, IPPROTO_IP,
-		    IP_TTL, &ttl, sizeof(ttl)))
-			err(1, "set IP TTL");
-
-#if defined(IPV6_UNICAST_HOPS)
-		else if (af == AF_INET6 && setsockopt(s, IPPROTO_IPV6,
-		    IPV6_UNICAST_HOPS, &ttl, sizeof(ttl)))
-			err(1, "set IPv6 unicast hops");
-#else
-		else if (af == AF_INET6)
-			errx(1, "can't set IPv6 unicast hops (unavailable)");
-#endif
-	}
-
-	if (minttl != -1) {
-#if defined(IP_MINTTL)
-		if (af == AF_INET && setsockopt(s, IPPROTO_IP,
-		    IP_MINTTL, &minttl, sizeof(minttl)))
-			err(1, "set IP min TTL");
-#else
-		if (af == AF_INET)
-			errx(1, "can't set IP min TTL (unavailable)");
-#endif
-
-#if defined(IPV6_MINHOPCOUNT)
-		else if (af == AF_INET6 && setsockopt(s, IPPROTO_IPV6,
-		    IPV6_MINHOPCOUNT, &minttl, sizeof(minttl)))
-			err(1, "set IPv6 min hop count");
-#else
-		else if (af == AF_INET6)
-			errx(1, "can't set IPv6 min hop count (unavailable)");
-#endif
-	}
-}
-
-int
-process_tos_opt(char *s, int *val)
-{
-	/* DiffServ Codepoints and other TOS mappings */
-	const struct toskeywords {
-		const char	*keyword;
-		int		 val;
-	} *t, toskeywords[] = {
-		{ "af11",		IPTOS_DSCP_AF11 },
-		{ "af12",		IPTOS_DSCP_AF12 },
-		{ "af13",		IPTOS_DSCP_AF13 },
-		{ "af21",		IPTOS_DSCP_AF21 },
-		{ "af22",		IPTOS_DSCP_AF22 },
-		{ "af23",		IPTOS_DSCP_AF23 },
-		{ "af31",		IPTOS_DSCP_AF31 },
-		{ "af32",		IPTOS_DSCP_AF32 },
-		{ "af33",		IPTOS_DSCP_AF33 },
-		{ "af41",		IPTOS_DSCP_AF41 },
-		{ "af42",		IPTOS_DSCP_AF42 },
-		{ "af43",		IPTOS_DSCP_AF43 },
-		{ "critical",		IPTOS_PREC_CRITIC_ECP },
-		{ "cs0",		IPTOS_DSCP_CS0 },
-		{ "cs1",		IPTOS_DSCP_CS1 },
-		{ "cs2",		IPTOS_DSCP_CS2 },
-		{ "cs3",		IPTOS_DSCP_CS3 },
-		{ "cs4",		IPTOS_DSCP_CS4 },
-		{ "cs5",		IPTOS_DSCP_CS5 },
-		{ "cs6",		IPTOS_DSCP_CS6 },
-		{ "cs7",		IPTOS_DSCP_CS7 },
-		{ "ef",			IPTOS_DSCP_EF },
-		{ "inetcontrol",	IPTOS_PREC_INTERNETCONTROL },
-		{ "lowcost",		IPTOS_LOWCOST },
-		{ "lowdelay",		IPTOS_LOWDELAY },
-		{ "netcontrol",		IPTOS_PREC_NETCONTROL },
-		{ "reliability",	IPTOS_RELIABILITY },
-		{ "throughput",		IPTOS_THROUGHPUT },
-		{ NULL,			-1 },
-	};
-
-	for (t = toskeywords; t->keyword != NULL; t++) {
-		if (strcmp(s, t->keyword) == 0) {
-			*val = t->val;
-			return 1;
-		}
-	}
-
-	return 0;
-}
-
-# if defined(TLS)
-int
-process_tls_opt(char *s, int *flags)
-{
-	size_t len;
-	char *v;
-
-	const struct tlskeywords {
-		const char	*keyword;
-		int		 flag;
-		char		**value;
-	} *t, tlskeywords[] = {
-		{ "ciphers",		-1,			&tls_ciphers },
-		{ "clientcert",		TLS_CCERT,		NULL },
-		{ "muststaple",		TLS_MUSTSTAPLE,		NULL },
-		{ "noverify",		TLS_NOVERIFY,		NULL },
-		{ "noname",		TLS_NONAME,		NULL },
-		{ "protocols",		-1,			&tls_protocols },
-		{ NULL,			-1,			NULL },
-	};
-
-	len = strlen(s);
-	if ((v = strchr(s, '=')) != NULL) {
-		len = v - s;
-		v++;
-	}
-
-	for (t = tlskeywords; t->keyword != NULL; t++) {
-		if (strlen(t->keyword) == len &&
-		    strncmp(s, t->keyword, len) == 0) {
-			if (t->value != NULL) {
-				if (v == NULL)
-					errx(1, "invalid tls value `%s'", s);
-				*t->value = v;
-			} else {
-				*flags |= t->flag;
-			}
-			return 1;
-		}
-	}
-	return 0;
-}
-
-void
-save_peer_cert(struct tls *tls_ctx, FILE *fp)
-{
-	const char *pem;
-	size_t plen;
-
-	if ((pem = tls_peer_cert_chain_pem(tls_ctx, &plen)) == NULL)
-		errx(1, "Can't get peer certificate");
-	if (fprintf(fp, "%.*s", (int)plen, pem) < 0)
-		err(1, "unable to save peer cert");
-	if (fflush(fp) != 0)
-		err(1, "unable to flush peer cert");
-}
-
-void
-report_tls(struct tls * tls_ctx, char * host)
-{
-	time_t t;
-	const char *ocsp_url;
-
-	fprintf(stderr, "TLS handshake negotiated %s/%s with host %s\n",
-	    tls_conn_version(tls_ctx), tls_conn_cipher(tls_ctx), host);
-	fprintf(stderr, "Peer name: %s\n",
-	    tls_expectname ? tls_expectname : host);
-	if (tls_peer_cert_subject(tls_ctx))
-		fprintf(stderr, "Subject: %s\n",
-		    tls_peer_cert_subject(tls_ctx));
-	if (tls_peer_cert_issuer(tls_ctx))
-		fprintf(stderr, "Issuer: %s\n",
-		    tls_peer_cert_issuer(tls_ctx));
-	if ((t = tls_peer_cert_notbefore(tls_ctx)) != -1)
-		fprintf(stderr, "Valid From: %s", ctime(&t));
-	if ((t = tls_peer_cert_notafter(tls_ctx)) != -1)
-		fprintf(stderr, "Valid Until: %s", ctime(&t));
-	if (tls_peer_cert_hash(tls_ctx))
-		fprintf(stderr, "Cert Hash: %s\n",
-		    tls_peer_cert_hash(tls_ctx));
-	ocsp_url = tls_peer_ocsp_url(tls_ctx);
-	if (ocsp_url != NULL)
-		fprintf(stderr, "OCSP URL: %s\n", ocsp_url);
-	switch (tls_peer_ocsp_response_status(tls_ctx)) {
-	case TLS_OCSP_RESPONSE_SUCCESSFUL:
-		fprintf(stderr, "OCSP Stapling: %s\n",
-		    tls_peer_ocsp_result(tls_ctx) == NULL ?  "" :
-		    tls_peer_ocsp_result(tls_ctx));
-		fprintf(stderr,
-		    "  response_status=%d cert_status=%d crl_reason=%d\n",
-		    tls_peer_ocsp_response_status(tls_ctx),
-		    tls_peer_ocsp_cert_status(tls_ctx),
-		    tls_peer_ocsp_crl_reason(tls_ctx));
-		t = tls_peer_ocsp_this_update(tls_ctx);
-		fprintf(stderr, "  this update: %s",
-		    t != -1 ? ctime(&t) : "\n");
-		t =  tls_peer_ocsp_next_update(tls_ctx);
-		fprintf(stderr, "  next update: %s",
-		    t != -1 ? ctime(&t) : "\n");
-		t =  tls_peer_ocsp_revocation_time(tls_ctx);
-		fprintf(stderr, "  revocation: %s",
-		    t != -1 ? ctime(&t) : "\n");
-		break;
-	case -1:
-		break;
-	default:
-		fprintf(stderr, "OCSP Stapling:  failure - response_status %d (%s)\n",
-		    tls_peer_ocsp_response_status(tls_ctx),
-		    tls_peer_ocsp_result(tls_ctx) == NULL ?  "" :
-		    tls_peer_ocsp_result(tls_ctx));
-		break;
-
-	}
-}
-# endif
-
-void
-report_sock(const char *msg, const struct sockaddr *sa, socklen_t salen,
-    char *path)
-{
-	char host[NI_MAXHOST], port[NI_MAXSERV];
-	int herr;
-	int flags = NI_NUMERICSERV;
-
-	if (path != NULL) {
-		fprintf(stderr, "%s on %s\n", msg, path);
-		return;
-	}
-
-	if (nflag)
-		flags |= NI_NUMERICHOST;
-
-	herr = getnameinfo(sa, salen, host, sizeof(host), port, sizeof(port),
-	    flags);
-	switch (herr) {
-		case 0:
-			break;
-		case EAI_SYSTEM:
-			warn("getnameinfo");
-			return;
-		default:
-			warnx("getnameinfo: %s", gai_strerror(herr));
-			return;
-	}
-
-	fprintf(stderr, "%s on %s %s\n", msg, host, port);
-}
-
-void
-help(void)
-{
-# if defined(DEBIAN_VERSION)
-        fprintf(stderr, "OpenBSD netcat (Debian patchlevel " DEBIAN_VERSION ")\n");
-# endif
-	usage(0);
-	fprintf(stderr, "\tCommand Summary:\n\
-	\t-4		Use IPv4\n\
-	\t-6		Use IPv6\n\
-	\t-b		Allow broadcast\n\
-	\t-C		Send CRLF as line-ending\n\
-	\t-D		Enable the debug socket option\n\
-	\t-d		Detach from stdin\n\
-	\t-F		Pass socket fd\n\
-	\t-h		This help text\n\
-	\t-I length	TCP receive buffer length\n\
-	\t-i interval	Delay interval for lines sent, ports scanned\n\
-	\t-k		Keep inbound sockets open for multiple connects\n\
-	\t-l		Listen mode, for inbound connects\n\
-	\t-M ttl		Outgoing TTL / Hop Limit\n\
-	\t-m minttl	Minimum incoming TTL / Hop Limit\n\
-	\t-N		Shutdown the network socket after EOF on stdin\n\
-	\t-n		Suppress name/port resolutions\n\
-	\t-O length	TCP send buffer length\n\
-	\t-P proxyuser\tUsername for proxy authentication\n\
-	\t-p port\t	Specify local port for remote connects\n\
-	\t-q secs\t	quit after EOF on stdin and delay of secs\n\
-	\t-r		Randomize remote ports\n\
-	\t-S		Enable the TCP MD5 signature option\n\
-	\t-s sourceaddr	Local source address\n\
-	\t-T keyword	TOS value\n\
-	\t-t		Answer TELNET negotiation\n\
-	\t-U		Use UNIX domain socket\n\
-	\t-u		UDP mode\n\
-	\t-V rtable	Specify alternate routing table\n\
-	\t-v		Verbose\n\
-	\t-W recvlimit	Terminate after receiving a number of packets\n\
-	\t-w timeout	Timeout for connects and final net reads\n\
-	\t-X proto	Proxy protocol: \"4\", \"5\" (SOCKS) or \"connect\"\n\
-	\t-x addr[:port]\tSpecify proxy address and port\n\
-	\t-Z		DCCP mode\n\
-	\t-z		Zero-I/O mode [used for scanning]\n\
-	Port numbers can be individual or ranges: lo-hi [inclusive]\n");
-	exit(0);
-}
-
-void
-usage(int ret)
-{
-	fprintf(stderr,
-	    "usage: nc [-46CDdFhklNnrStUuvZz] [-I length] [-i interval] [-M ttl]\n"
-	    "\t  [-m minttl] [-O length] [-P proxy_username] [-p source_port]\n"
-	    "\t  [-q seconds] [-s sourceaddr] [-T keyword] [-V rtable] [-W recvlimit]\n"
-	    "\t  [-w timeout] [-X proxy_protocol] [-x proxy_address[:port]]\n"
-	    "\t  [destination] [port]\n");
-	if (ret)
-		exit(1);
-}
-
-/*
- * quit()
- * handler for a "-q" timeout (exit 0 instead of 1)
- */
-static void quit()
-{
-	exit(0);
-}

package/netcat-openbsd/src/socks.c

@@ -1,400 +0,0 @@
-/*	$OpenBSD: socks.c,v 1.30 2019/11/04 17:33:28 millert Exp $	*/
-
-/*
- * Copyright (c) 1999 Niklas Hallqvist.  All rights reserved.
- * Copyright (c) 2004, 2005 Damien Miller.  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.
- */
-
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-
-#include <err.h>
-#include <errno.h>
-#include <netdb.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#include <resolv.h>
-#include <bsd/readpassphrase.h>
-#include "atomicio.h"
-
-#define SOCKS_PORT	"1080"
-#define HTTP_PROXY_PORT	"3128"
-#define HTTP_MAXHDRS	64
-#define SOCKS_V5	5
-#define SOCKS_V4	4
-#define SOCKS_NOAUTH	0
-#define SOCKS_NOMETHOD	0xff
-#define SOCKS_CONNECT	1
-#define SOCKS_IPV4	1
-#define SOCKS_DOMAIN	3
-#define SOCKS_IPV6	4
-
-int	remote_connect(const char *, const char *, struct addrinfo, char *);
-int	socks_connect(const char *, const char *, struct addrinfo,
-	    const char *, const char *, struct addrinfo, int,
-	    const char *);
-
-static int
-decode_addrport(const char *h, const char *p, struct sockaddr *addr,
-    socklen_t addrlen, int v4only, int numeric)
-{
-	int r;
-	struct addrinfo hints, *res;
-
-	memset(&hints, 0, sizeof(hints));
-	hints.ai_family = v4only ? PF_INET : PF_UNSPEC;
-	hints.ai_flags = numeric ? AI_NUMERICHOST : 0;
-	hints.ai_socktype = SOCK_STREAM;
-	r = getaddrinfo(h, p, &hints, &res);
-	/* Don't fatal when attempting to convert a numeric address */
-	if (r != 0) {
-		if (!numeric) {
-			errx(1, "getaddrinfo(\"%.64s\", \"%.64s\"): %s", h, p,
-			    gai_strerror(r));
-		}
-		return (-1);
-	}
-	if (addrlen < res->ai_addrlen) {
-		freeaddrinfo(res);
-		errx(1, "internal error: addrlen < res->ai_addrlen");
-	}
-	memcpy(addr, res->ai_addr, res->ai_addrlen);
-	freeaddrinfo(res);
-	return (0);
-}
-
-static int
-proxy_read_line(int fd, char *buf, size_t bufsz)
-{
-	size_t off;
-
-	for(off = 0;;) {
-		if (off >= bufsz)
-			errx(1, "proxy read too long");
-		if (atomicio(read, fd, buf + off, 1) != 1)
-			err(1, "proxy read");
-		/* Skip CR */
-		if (buf[off] == '\r')
-			continue;
-		if (buf[off] == '\n') {
-			buf[off] = '\0';
-			break;
-		}
-		off++;
-	}
-	return (off);
-}
-
-static void
-getproxypass(const char *proxyuser, const char *proxyhost,
-    char *pw, size_t pwlen)
-{
-	char prompt[512];
-
-	snprintf(prompt, sizeof(prompt), "Proxy password for %s@%s: ",
-	   proxyuser, proxyhost);
-	if (readpassphrase(prompt, pw, pwlen, RPP_REQUIRE_TTY) == NULL)
-		errx(1, "Unable to read proxy passphrase");
-}
-
-/*
- * Error strings adapted from the generally accepted SOCKSv4 spec:
- *
- * http://ftp.icm.edu.pl/packages/socks/socks4/SOCKS4.protocol
- */
-static const char *
-socks4_strerror(int e)
-{
-	switch (e) {
-	case 90:
-		return "Succeeded";
-	case 91:
-		return "Request rejected or failed";
-	case 92:
-		return "SOCKS server cannot connect to identd on the client";
-	case 93:
-		return "Client program and identd report different user-ids";
-	default:
-		return "Unknown error";
-	}
-}
-
-/*
- * Error strings taken almost directly from RFC 1928.
- */
-static const char *
-socks5_strerror(int e)
-{
-	switch (e) {
-	case 0:
-		return "Succeeded";
-	case 1:
-		return "General SOCKS server failure";
-	case 2:
-		return "Connection not allowed by ruleset";
-	case 3:
-		return "Network unreachable";
-	case 4:
-		return "Host unreachable";
-	case 5:
-		return "Connection refused";
-	case 6:
-		return "TTL expired";
-	case 7:
-		return "Command not supported";
-	case 8:
-		return "Address type not supported";
-	default:
-		return "Unknown error";
-	}
-}
-
-int
-socks_connect(const char *host, const char *port,
-    struct addrinfo hints __attribute__ ((__unused__)),
-    const char *proxyhost, const char *proxyport, struct addrinfo proxyhints,
-    int socksv, const char *proxyuser)
-{
-	int proxyfd, r, authretry = 0;
-	size_t hlen, wlen;
-	unsigned char buf[1024];
-	size_t cnt;
-	struct sockaddr_storage addr;
-	struct sockaddr_in *in4 = (struct sockaddr_in *)&addr;
-	struct sockaddr_in6 *in6 = (struct sockaddr_in6 *)&addr;
-	in_port_t serverport;
-
-	if (proxyport == NULL)
-		proxyport = (socksv == -1) ? HTTP_PROXY_PORT : SOCKS_PORT;
-
-	/* Abuse API to lookup port */
-	if (decode_addrport("0.0.0.0", port, (struct sockaddr *)&addr,
-	    sizeof(addr), 1, 1) == -1)
-		errx(1, "unknown port \"%.64s\"", port);
-	serverport = in4->sin_port;
-
- again:
-	if (authretry++ > 3)
-		errx(1, "Too many authentication failures");
-
-	proxyfd = remote_connect(proxyhost, proxyport, proxyhints, NULL);
-
-	if (proxyfd < 0)
-		return (-1);
-
-	if (socksv == 5) {
-		if (decode_addrport(host, port, (struct sockaddr *)&addr,
-		    sizeof(addr), 0, 1) == -1)
-			addr.ss_family = 0; /* used in switch below */
-
-		/* Version 5, one method: no authentication */
-		buf[0] = SOCKS_V5;
-		buf[1] = 1;
-		buf[2] = SOCKS_NOAUTH;
-		cnt = atomicio(vwrite, proxyfd, buf, 3);
-		if (cnt != 3)
-			err(1, "write failed (%zu/3)", (size_t)cnt);
-
-		cnt = atomicio(read, proxyfd, buf, 2);
-		if (cnt != 2)
-			err(1, "read failed (%zu/3)", (size_t)cnt);
-
-		if (buf[1] == SOCKS_NOMETHOD)
-			errx(1, "authentication method negotiation failed");
-
-		switch (addr.ss_family) {
-		case 0:
-			/* Version 5, connect: domain name */
-
-			/* Max domain name length is 255 bytes */
-			hlen = strlen(host);
-			if (hlen > 255)
-				errx(1, "host name too long for SOCKS5");
-			buf[0] = SOCKS_V5;
-			buf[1] = SOCKS_CONNECT;
-			buf[2] = 0;
-			buf[3] = SOCKS_DOMAIN;
-			buf[4] = hlen;
-			memcpy(buf + 5, host, hlen);
-			memcpy(buf + 5 + hlen, &serverport, sizeof serverport);
-			wlen = 7 + hlen;
-			break;
-		case AF_INET:
-			/* Version 5, connect: IPv4 address */
-			buf[0] = SOCKS_V5;
-			buf[1] = SOCKS_CONNECT;
-			buf[2] = 0;
-			buf[3] = SOCKS_IPV4;
-			memcpy(buf + 4, &in4->sin_addr, sizeof in4->sin_addr);
-			memcpy(buf + 8, &in4->sin_port, sizeof in4->sin_port);
-			wlen = 10;
-			break;
-		case AF_INET6:
-			/* Version 5, connect: IPv6 address */
-			buf[0] = SOCKS_V5;
-			buf[1] = SOCKS_CONNECT;
-			buf[2] = 0;
-			buf[3] = SOCKS_IPV6;
-			memcpy(buf + 4, &in6->sin6_addr, sizeof in6->sin6_addr);
-			memcpy(buf + 20, &in6->sin6_port,
-			    sizeof in6->sin6_port);
-			wlen = 22;
-			break;
-		default:
-			errx(1, "internal error: silly AF");
-		}
-
-		cnt = atomicio(vwrite, proxyfd, buf, wlen);
-		if (cnt != wlen)
-			err(1, "write failed (%zu/%zu)", (size_t)cnt, (size_t)wlen);
-
-		cnt = atomicio(read, proxyfd, buf, 4);
-		if (cnt != 4)
-			err(1, "read failed (%zu/4)", (size_t)cnt);
-		if (buf[1] != 0) {
-			errx(1, "connection failed, SOCKSv5 error: %s",
-			    socks5_strerror(buf[1]));
-		}
-		switch (buf[3]) {
-		case SOCKS_IPV4:
-			cnt = atomicio(read, proxyfd, buf + 4, 6);
-			if (cnt != 6)
-				err(1, "read failed (%zu/6)", (size_t)cnt);
-			break;
-		case SOCKS_IPV6:
-			cnt = atomicio(read, proxyfd, buf + 4, 18);
-			if (cnt != 18)
-				err(1, "read failed (%zu/18)", (size_t)cnt);
-			break;
-		default:
-			errx(1, "connection failed, unsupported address type");
-		}
-	} else if (socksv == 4) {
-		/* This will exit on lookup failure */
-		decode_addrport(host, port, (struct sockaddr *)&addr,
-		    sizeof(addr), 1, 0);
-
-		/* Version 4 */
-		buf[0] = SOCKS_V4;
-		buf[1] = SOCKS_CONNECT;	/* connect */
-		memcpy(buf + 2, &in4->sin_port, sizeof in4->sin_port);
-		memcpy(buf + 4, &in4->sin_addr, sizeof in4->sin_addr);
-		buf[8] = 0;	/* empty username */
-		wlen = 9;
-
-		cnt = atomicio(vwrite, proxyfd, buf, wlen);
-		if (cnt != wlen)
-			err(1, "write failed (%zu/%zu)", (size_t)cnt, (size_t)wlen);
-
-		cnt = atomicio(read, proxyfd, buf, 8);
-		if (cnt != 8)
-			err(1, "read failed (%zu/8)", (size_t)cnt);
-		if (buf[1] != 90) {
-			errx(1, "connection failed, SOCKSv4 error: %s",
-			    socks4_strerror(buf[1]));
-		}
-	} else if (socksv == -1) {
-		/* HTTP proxy CONNECT */
-
-		/* Disallow bad chars in hostname */
-		if (strcspn(host, "\r\n\t []:") != strlen(host))
-			errx(1, "Invalid hostname");
-
-		/* Try to be sane about numeric IPv6 addresses */
-		if (strchr(host, ':') != NULL) {
-			r = snprintf((char*)buf, sizeof(buf),
-			    "CONNECT [%s]:%d HTTP/1.0\r\n",
-			    host, ntohs(serverport));
-		} else {
-			r = snprintf((char*)buf, sizeof(buf),
-			    "CONNECT %s:%d HTTP/1.0\r\n",
-			    host, ntohs(serverport));
-		}
-		if (r < 0 || (size_t)r >= sizeof(buf))
-			errx(1, "hostname too long");
-		r = strlen((char*)buf);
-
-		cnt = atomicio(vwrite, proxyfd, buf, r);
-		if (cnt != r)
-			err(1, "write failed (%zu/%d)", (size_t)cnt, (int)r);
-
-		if (authretry > 1) {
-			char proxypass[256];
-			char resp[1024];
-
-			getproxypass(proxyuser, proxyhost,
-			    proxypass, sizeof proxypass);
-			r = snprintf((char*)buf, sizeof(buf), "%s:%s",
-			    proxyuser, proxypass);
-			explicit_bzero(proxypass, sizeof proxypass);
-			if (r == -1 || (size_t)r >= sizeof(buf) ||
-			    b64_ntop(buf, strlen((char*)buf), resp,
-			    sizeof(resp)) == -1)
-				errx(1, "Proxy username/password too long");
-			r = snprintf((char*)buf, sizeof(buf), "Proxy-Authorization: "
-			    "Basic %s\r\n", resp);
-			if (r < 0 || (size_t)r >= sizeof(buf))
-				errx(1, "Proxy auth response too long");
-			r = strlen((char*)buf);
-			if ((cnt = atomicio(vwrite, proxyfd, buf, r)) != r)
-				err(1, "write failed (%zu/%d)", (size_t)cnt, r);
-			explicit_bzero(proxypass, sizeof proxypass);
-			explicit_bzero(buf, sizeof buf);
-		}
-
-		/* Terminate headers */
-		if ((cnt = atomicio(vwrite, proxyfd, "\r\n", 2)) != 2)
-			err(1, "write failed (%zu/2)", cnt);
-
-		/* Read status reply */
-		proxy_read_line(proxyfd, (char*)buf, sizeof(buf));
-		if (proxyuser != NULL &&
-		    (strncmp((char*)buf, "HTTP/1.0 407 ", 12) == 0 ||
-		    strncmp((char*)buf, "HTTP/1.1 407 ", 12) == 0)) {
-			if (authretry > 1) {
-				fprintf(stderr, "Proxy authentication "
-				    "failed\n");
-			}
-			close(proxyfd);
-			goto again;
-		} else if (strncmp((char*)buf, "HTTP/1.0 200 ", 12) != 0 &&
-		    strncmp((char*)buf, "HTTP/1.1 200 ", 12) != 0)
-			errx(1, "Proxy error: \"%s\"", buf);
-
-		/* Headers continue until we hit an empty line */
-		for (r = 0; r < HTTP_MAXHDRS; r++) {
-			proxy_read_line(proxyfd, (char*)buf, sizeof(buf));
-			if (*buf == '\0')
-				break;
-		}
-		if (*buf != '\0')
-			errx(1, "Too many proxy headers received");
-	} else
-		errx(1, "Unknown proxy protocol %d", socksv);
-
-	return (proxyfd);
-}