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* fix previous;jmc2015-09-122-31/+48
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* spaces found during a readderaadt2015-09-111-19/+18
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* Add TLS suppport to nc. Provides a useful little test and script tool.beck2015-09-113-45/+346
| | | | ok jsing@ bluhm@
* Netcat could hang during write(2) although poll(2) reports that thebluhm2015-09-081-15/+6
| | | | | | | | | socket is writeable. This happens because netcat tries to write more than the low water mark of the socket write buffer. With a non-blocking socket you may get a short write, otherwise it blocks. The latter could cause a total hang of the netcat process depending on the upper protocol. So make the network connection non-blocking. OK claudio@ millert@
* synchronize synopsis and usage.sobrado2015-09-031-2/+2
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* remove unused variablechl2015-07-261-2/+2
| | | | ok tedu@
* The code in socks.c writes multiple times in a row to a socket. If thetobias2015-03-261-3/+6
| | | | | | | | | socket becomes invalid between these calls (e.g. connection closed), write will throw SIGPIPE. With this patch, SIGPIPE is ignored so we can handle write's -1 return value (errno will be EPIPE). Ultimately, it leads to program exit, too -- but with nicer error message. :) with input by and ok djm
* Fix error message in case of write failure.tobias2015-03-261-3/+3
| | | | ok djm
* Check for short writes in fdpass(). Clean up while at it.tobias2015-03-261-4/+3
| | | | ok djm
* Sync camel case of "ProxyUseFdpass" with ssh_config(5).tobias2015-03-261-3/+3
| | | | ok djm
* Support for nc -T on IPv6 addresses.jca2015-02-141-7/+16
| | | | ok sthen@
* my mistake. we already did increase buffers to 16k; increasing to 64ktedu2014-10-301-2/+2
| | | | would be the next stage of embiggening. restore 16k.
* rework the poll loop to poll in both directions so it doesn't get stucktedu2014-10-301-47/+211
| | | | | if one pipe stalls out. from a diff by Arne Becker. (buffer size left alone for now)
* POLLIN is not guaranteed to be set in revents for EOF so check formillert2014-10-261-3/+3
| | | | POLLHUP too. OK deraadt@
* Remove unnecessary include: netinet/in_systm.h is not needed by theselteo2014-10-241-2/+1
| | | | | | programs. ok deraadt@ millert@
* Make sure the correct errno is reported by warn* or err* and notguenther2014-07-201-2/+3
| | | | | | the errno of an intervening cleanup operation like close/unlink/etc. Diff from Doug Hogan (doug (at) acyclic.org)
* stick with 16k buffers for a little while to avoid bufferbloat.tedu2014-06-101-2/+2
| | | | | atomicio writing out 64k in one direction will cause traffic in the other direction to stall until it's complete. discussion with deraadt
* increase buffer size to 64k, and actually use it. ok deraadttedu2014-06-101-3/+3
| | | | from John-Mark Gurney
* Use errc/warnc to simplify code.guenther2014-05-201-2/+2
| | | | | | Also, in 'ftp', always put the error message last, after the hostname/ipaddr. ok jsing@ krw@ millert@
* Unbreak nc -6 -l. Don't retrieve and thus later set the routing tablejca2014-03-121-3/+2
| | | | | unless -V is passed (intent of the previous commit), and use SOL_SOCKET instead of IPPROTO_IP to set the rtable in local_listen(). ok sthen@
* Once more, the default routing table id is inherited from the processclaudio2014-02-261-3/+2
| | | | like for any other process as well. OK by many
* one of the examples needs -N to work again;jmc2014-02-101-3/+3
| | | | | | | the paper trail appears to be: reported in feebsd pr docs/185353 by rol robert-eckardt de fix suggested by peter wemm diff submitted to tech by allan jude
* Only use setsockopt(..SO_RTABLE..) if the -V flag is given to nc/telnet,sthen2013-10-261-7/+7
| | | | | same style as traceroute6 (change to int and use -1 as a flag, so rtable 0 can still be used as an explicit parameter).
* Oups, a little bit overzealous. If we "route -T4 exec telnet foo", thenphessler2013-10-211-1/+2
| | | | make sure telnet runs in rdomain 4 as expected. Same for nc.
* Set the requested rdomain on the socket instead of only on the IPv4 part.phessler2013-10-211-11/+7
| | | | Also, switching to rdomain zero is a legit option so we should allow that.
* escape not-full-stop-dot at eol;jmc2013-08-201-2/+2
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* add -F to usage() and help();jmc2013-08-201-2/+3
| | | | ok djm
* add -F flag to enabled fd-pass mode: establish connection and passdjm2013-08-202-6/+89
| | | | | | connected socket to stdout. This is useful in proxy mode to establish a connection for use by ssh in conjunction with its new ProxyUseFDPass option; ok markus@
* use .Mt for email addresses; from Jan Stary <hans at stare dot cz>; ok jmc@schwarze2013-07-161-4/+4
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* use FD_CLOEXEC instead of 1; from David Hillokan2013-04-291-2/+2
| | | | ok otto
* Don't shutdown nc(1)'s network socket when stdin closes. Matches *Hobbit*'ssthen2013-03-202-7/+17
| | | | | | original netcat and GNU netcat; revert to old behaviour with the new -N flag if needed. After much discussion with otto deraadt tedu and Martin Pelikan. ok deraadt@
* All accept() errors are considered fatal, until someone gives a differentderaadt2013-03-121-4/+5
| | | | reason. No code changed, just documenting it...
* remove some unnecessary sys/param.h inclusionsderaadt2012-12-041-3/+1
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* Allow UDP server to receive datagrams from multiple socket pairs with -khaesbaert2012-07-072-7/+17
| | | | | | | flag. Prompted by a question from dsp at 2f30 dot org, diff from Lazarom Koromil with a few tweaks by me, many thanks. ok mikeb@ nicm@ haesbaert@
* Report incoming connections when -l is specified with -v.haesbaert2012-07-071-1/+35
| | | | | | From Ricky Zhou with a few tweaks by me. ok henning@ haesbaert@
* error out if accept() failsderaadt2012-04-011-1/+3
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* remove IP_JUMBO, SO_JUMBO, and RTF_JUMBO.dlg2012-03-171-13/+4
| | | | no objection from mcbride@ krw@ markus@ deraadt@
* fix format strings for size_tespie2012-03-081-3/+3
| | | | ok okan@
* Update comments. ok deraadt@lum2012-02-091-4/+3
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* Remove unused protocol value check. ok brynet@lum2012-02-091-4/+1
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* Expand the CAVEAT section to more fully describe the behaviour oflum2012-02-071-6/+13
| | | | | | | | the -uz combination. This diff stems from a diff by brynet@ sent to tech@ help from jmc@ regarding wording.
* change -w to apply to the connection as well. manpage bit from jmc@fgsch2011-10-042-6/+44
| | | | nicm@ ok.
* Standarize the ToS option across nc/ping/traceroute so that they'llhaesbaert2011-09-172-28/+77
| | | | | | | accept the same values as pf.conf. It accepts decimal, hexadecimal and the dscp/tos keywords. The ping option was ripped of in SMALL. ok mcbride@ sthen@
* Convert SO_RTABLE's protocol level to the SOL_SOCKET; ok claudiomikeb2011-06-211-2/+2
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* fix from pr 6207. a bit more of an explanation: we write the correctokan2011-02-121-4/+18
| | | | | | | | | | number of bits when connecting via a SOCKS 5 proxy over ipv6, but we also need to read the same number depending on the received address type. this issue is not noticeable with ssh's SOCKS 5 support since it always set the address type as ipv4. this fixes connections via SOCKS 5 proxies which set their address type as ipv6 when using ipv6. after review with, and ok, nicm@
* Minor tweaks to nc(1) man page and usage.jeremy2011-01-092-16/+23
| | | | OK jmc@, nicm@, tedu@
* Enable unix datagram support by treating ENOBUFS like EAGAIN.jeremy2011-01-081-2/+2
| | | | | | Separate commit requested by deraadt@. OK nicm@
* Support unix domain sockets in nc(1) with -Uu.jeremy2011-01-082-25/+83
| | | | | | | | | | | | | | | | | | | | | Previously, using -U with -u was an error that was not documented in the man page. Now it will use a unix socket in datagram mode. Bidirectional unix datagram communication requires a socket at both ends, so in client mode (without -l), a temporary socket is created so that responses from the server can be received. If -s is specified with -U and -u, it specifies the location of the temporary socket to create. This was mostly written way back in 2007. Since then, various improvements implemented based on suggestions from guenther@, tedu@, and nicm@. Man page help from nicm@ and jmc@. Unix datagram support requires a small change to atomicio.c in order to function correctly, this will be committed separately shortly. OK nicm@
* echo behaves differently in sh and csh, only handling C-style escapesguenther2010-07-251-3/+3
| | | | | | in the former, so switch an example that needs them to use printf instead. From bcr at freebsd.org. ok halex@
* Fix the naming of interfaces and variables for rdomains and rtablesguenther2010-07-032-19/+19
| | | | | | | | | | | | and make it possible to bind sockets (including listening sockets!) to rtables and not just rdomains. This changes the name of the system calls, socket option, and ioctl. After building with this you should remove the files /usr/share/man/cat2/[gs]etrdomain.0. Since this removes the existing [gs]etrdomain() system calls, the libc major is bumped. Written by claudio@, criticized^Wcritiqued by me
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