* RE: Compiling netcat under cygwin
@ 2002-09-11 7:14 Nenad Antic (EAB)
0 siblings, 0 replies; 10+ messages in thread
From: Nenad Antic (EAB) @ 2002-09-11 7:14 UTC (permalink / raw)
To: 'cygwin@cygwin.com'
[-- Attachment #1: Type: text/plain, Size: 2536 bytes --]
Hi,
The latest debian netcat patch level is 22 (not 12.1, for some reason I got an old one before). However, I can't sort that one out.
Anyway, here are instead the debian netcat patches up to level 21 together with the cygwin patch.
Cheers,
/Nenad
> -----Original Message-----
> From: Nenad Antic (EAB) [mailto:Nenad.Antic@era.ericsson.se]
> Sent: Thursday, September 05, 2002 6:29 PM
> To: 'cygwin@cygwin.com'
> Subject: RE: Compiling netcat under cygwin
>
>
> Hi,
>
> I combined the latest Debian netcat patch that has various
> bug fixes with the one Bjoern submitted earlier today to make
> it compile on cygwin.
>
> Thought that I might send it here since I don't know where
> else to put it. (In case somebody else wants a native cygwin netcat.)
>
> Just run
>
> patch <netcat_1.10-12.1_cygwin.diff
> make cygwin
>
> in the original nc110 directory.
>
> Regards,
> /Nenad
>
>
> > > > I would like to get netcat
> > > > (http://www.atstake.com/research/tools/nc110.tgz)
> > compiled natively
> > > > under cygwin. Currently there isn't any appropriate target in
> > > > netcat's makefile to do this.
> > > >
> > > > I do know that there is a Windows NT version available at
> > > >
> > > > http://www.atstake.com/research/tools/nc11nt.zip
> > > >
> > > > However, when using that version under cygwin netcat
> behaves a bit
> > > > funny.
> > >
> > > [ ... ]
> > >
> > > > Would anybody know how to set up the gcc options so that netcat
> > > > can compile under cygwin properly? I would be really grateful
> > > > for this information.
> > >
> > > Please find the attached patch.
> > > unpack the above mentioned tar-file in a empty directory,
> > > save the patch in the same directory, then run in that directory
> > > patch <netcat-cygwin.patch
> > > make cygwin
> > > You should find a nc binary after these steps in the directory.
> > >
> > > Note: I am in no connection to the netcat maintainer, neither
> > > native or cygwin, and I have no plans to maintain a
> > > cygwin-version. I just taken 10 minutes to hack this up.
> > >
> > >
> > > Bjoern
> > >
> > > --
> > > +-------------------------------------------------------------
> > > --------+
> > > | Dipl.-Phys. Bjoern Kahl +++ AG Embedded Systems and
> > > Robotics (RESY) |
> > > | Informatics Faculty +++ Building 48 +++ University of
> > > Kaiserslautern|
> > > | phone: +49-631-205-2654 +++ www:
> > http://resy.informatik.uni-kl.de |
> > +-------------------------------------------------------------
>
>
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Compiling netcat under cygwin
2002-09-09 20:26 ` Gary R. Van Sickle
@ 2002-09-09 23:01 ` Christopher Faylor
0 siblings, 0 replies; 10+ messages in thread
From: Christopher Faylor @ 2002-09-09 23:01 UTC (permalink / raw)
To: cygwin
On Mon, Sep 09, 2002 at 10:21:12PM -0500, Gary R. Van Sickle wrote:
>>>Hi,
>>>
>>>I would if I could. But my C hacking hasn't been in use for more than
>>>a
>>decade. That's why I had to ask for help here in the first place.
>>C isnt a requirement to be a maintainer - though it doesnt hurt to know
>>a bit.
>
>Yeah, but be careful, you know what they say: "Once you hack, you never
>go back."
>
>Oh mercy, I still got it!
High five!
cgf
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* RE: Compiling netcat under cygwin
2002-09-09 5:25 ` Gareth Pearce
@ 2002-09-09 20:26 ` Gary R. Van Sickle
2002-09-09 23:01 ` Christopher Faylor
0 siblings, 1 reply; 10+ messages in thread
From: Gary R. Van Sickle @ 2002-09-09 20:26 UTC (permalink / raw)
To: cygwin
> > Hi,
> >
> > I would if I could. But my C hacking hasn't been in use for more than a
> decade. That's why I had to ask for help here in the first place.
> >
> C isnt a requirement to be a maintainer - though it doesnt hurt to know a
> bit.
>
> Gareth
>
Yeah, but be careful, you know what they say: "Once you hack, you never go
back."
Oh mercy, I still got it!
--
Gary R. Van Sickle
Brewer. Patriot.
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* Re: Compiling netcat under cygwin
2002-09-09 2:37 Nenad Antic (EAB)
@ 2002-09-09 5:25 ` Gareth Pearce
2002-09-09 20:26 ` Gary R. Van Sickle
0 siblings, 1 reply; 10+ messages in thread
From: Gareth Pearce @ 2002-09-09 5:25 UTC (permalink / raw)
To: cygwin
> Hi,
>
> I would if I could. But my C hacking hasn't been in use for more than a
decade. That's why I had to ask for help here in the first place.
>
C isnt a requirement to be a maintainer - though it doesnt hurt to know a
bit.
Gareth
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^ permalink raw reply [flat|nested] 10+ messages in thread
* RE: Compiling netcat under cygwin
@ 2002-09-09 2:37 Nenad Antic (EAB)
2002-09-09 5:25 ` Gareth Pearce
0 siblings, 1 reply; 10+ messages in thread
From: Nenad Antic (EAB) @ 2002-09-09 2:37 UTC (permalink / raw)
To: 'Nicholas Wourms'; +Cc: 'cygwin@cygwin.com'
Hi,
I would if I could. But my C hacking hasn't been in use for more than a decade. That's why I had to ask for help here in the first place.
Regards,
/Nenad
> -----Original Message-----
> From: Nicholas Wourms [mailto:nwourms@yahoo.com]
> Sent: Friday, September 06, 2002 7:41 PM
> To: Nenad Antic (EAB); 'cygwin@cygwin.com'
> Subject: RE: Compiling netcat under cygwin
>
>
>
> --- "Nenad Antic (EAB)" <Nenad.Antic@era.ericsson.se> wrote:
> > Hi,
> >
> > I combined the latest Debian netcat patch that has various bug
> > fixes with the one Bjoern submitted earlier today to make it
> > compile on cygwin.
> >
> > Thought that I might send it here since I don't know where else to
> > put it. (In case somebody else wants a native cygwin netcat.)
> >
> > Just run
> >
> > patch <netcat_1.10-12.1_cygwin.diff
> > make cygwin
> >
> > in the original nc110 directory.
>
>
> Why not volunteer to be it's maintainer and contribute it to the
> distribution? The instructions for submitting a package to the core
> distribution can be found here:
> http://cygwin.com/setup.html
>
> Cheers,
> Nicholas
>
> __________________________________________________
> Do You Yahoo!?
> Yahoo! Finance - Get real-time stock quotes
> http://finance.yahoo.com
>
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* RE: Compiling netcat under cygwin
2002-09-05 10:51 Nenad Antic (EAB)
@ 2002-09-06 10:53 ` Nicholas Wourms
0 siblings, 0 replies; 10+ messages in thread
From: Nicholas Wourms @ 2002-09-06 10:53 UTC (permalink / raw)
To: Nenad Antic (EAB), 'cygwin@cygwin.com'
--- "Nenad Antic (EAB)" <Nenad.Antic@era.ericsson.se> wrote:
> Hi,
>
> I combined the latest Debian netcat patch that has various bug
> fixes with the one Bjoern submitted earlier today to make it
> compile on cygwin.
>
> Thought that I might send it here since I don't know where else to
> put it. (In case somebody else wants a native cygwin netcat.)
>
> Just run
>
> patch <netcat_1.10-12.1_cygwin.diff
> make cygwin
>
> in the original nc110 directory.
Why not volunteer to be it's maintainer and contribute it to the
distribution? The instructions for submitting a package to the core
distribution can be found here:
http://cygwin.com/setup.html
Cheers,
Nicholas
__________________________________________________
Do You Yahoo!?
Yahoo! Finance - Get real-time stock quotes
http://finance.yahoo.com
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^ permalink raw reply [flat|nested] 10+ messages in thread
* RE: Compiling netcat under cygwin
@ 2002-09-05 10:51 Nenad Antic (EAB)
2002-09-06 10:53 ` Nicholas Wourms
0 siblings, 1 reply; 10+ messages in thread
From: Nenad Antic (EAB) @ 2002-09-05 10:51 UTC (permalink / raw)
To: 'cygwin@cygwin.com'
[-- Attachment #1: Type: text/plain, Size: 1930 bytes --]
Hi,
I combined the latest Debian netcat patch that has various bug fixes with the one Bjoern submitted earlier today to make it compile on cygwin.
Thought that I might send it here since I don't know where else to put it. (In case somebody else wants a native cygwin netcat.)
Just run
patch <netcat_1.10-12.1_cygwin.diff
make cygwin
in the original nc110 directory.
Regards,
/Nenad
> > > I would like to get netcat
> > > (http://www.atstake.com/research/tools/nc110.tgz)
> compiled natively
> > > under cygwin. Currently there isn't any appropriate target in
> > > netcat's makefile to do this.
> > >
> > > I do know that there is a Windows NT version available at
> > >
> > > http://www.atstake.com/research/tools/nc11nt.zip
> > >
> > > However, when using that version under cygwin netcat behaves a bit
> > > funny.
> >
> > [ ... ]
> >
> > > Would anybody know how to set up the gcc options so that netcat
> > > can compile under cygwin properly? I would be really grateful
> > > for this information.
> >
> > Please find the attached patch.
> > unpack the above mentioned tar-file in a empty directory,
> > save the patch in the same directory, then run in that directory
> > patch <netcat-cygwin.patch
> > make cygwin
> > You should find a nc binary after these steps in the directory.
> >
> > Note: I am in no connection to the netcat maintainer, neither
> > native or cygwin, and I have no plans to maintain a
> > cygwin-version. I just taken 10 minutes to hack this up.
> >
> >
> > Bjoern
> >
> > --
> > +-------------------------------------------------------------
> > --------+
> > | Dipl.-Phys. Bjoern Kahl +++ AG Embedded Systems and
> > Robotics (RESY) |
> > | Informatics Faculty +++ Building 48 +++ University of
> > Kaiserslautern|
> > | phone: +49-631-205-2654 +++ www:
> http://resy.informatik.uni-kl.de |
> +-------------------------------------------------------------
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diff -Nu ../nc110/Makefile ./Makefile
--- ../nc110/Makefile Wed Mar 20 03:16:06 1996
+++ ./Makefile Thu Sep 5 17:52:04 2002
@@ -9,6 +9,7 @@
# pick gcc if you'd rather , and/or do -g instead of -O if debugging
# debugging
# DFLAGS = -DTEST -DDEBUG
+DFLAGS = -DTELNET
CFLAGS = -O
XFLAGS = # xtra cflags, set by systype targets
XLIBS = # xtra libs if necessary?
@@ -67,7 +68,7 @@
make -e $(ALL) $(MFLAGS) XFLAGS='-DAIX'
linux:
- make -e $(ALL) $(MFLAGS) XFLAGS='-DLINUX' STATIC=-static
+ make -e $(ALL) $(MFLAGS) XFLAGS='-DLINUX'
# irix 5.2, dunno 'bout earlier versions. If STATIC='-non_shared' doesn't
# work for you, null it out and yell at SGI for their STUPID default
@@ -108,6 +109,11 @@
# Nexstep from mudge: NeXT cc is really old gcc
next:
make -e $(ALL) $(MFLAGS) XFLAGS='-DNEXT' STATIC=-Bstatic
+
+# cygwin Unix-emulationlayer for Win9x/NT/...
+cygwin:
+ make -e $(ALL) $(MFLAGS) XFLAGS='-DCYGWIN' STATIC= CC=gcc
+
# start with this for a new architecture, and see what breaks.
generic:
@@ -118,5 +124,5 @@
### RANDOM
clean:
- rm -f $(ALL) *.o *.obj
+ rm -f $(ALL) *.o *.obj *.exe
diff -Nu ../nc110/changelog.debian ./changelog.debian
--- ../nc110/changelog.debian Thu Jan 1 01:00:00 1970
+++ ./changelog.debian Thu Sep 5 16:48:40 2002
@@ -0,0 +1,84 @@
+***************
+*** 1,81 ****
+- netcat (1.10-12.1) frozen unstable; urgency=low
+-
+- * Non-maintained upload.
+- * Rename arm() to arm_timer() (Closes: #56390)
+-
+- -- Edward Brocklesby <ejb@styx.uucp.openprojects.net> Tue, 22 Feb 2000 12:59:12 +0000
+-
+- netcat (1.10-12) unstable; urgency=low
+-
+- * Fixed bugs #45669 and #45675 (removed extraneous sleep(1) command and also removed
+- * the "punt!" message; added -q feature)
+-
+- -- Robert S. Edmonds <stu@novare.net> Wed, 22 Sep 1999 19:29:47 -0400
+-
+- netcat (1.10-11) unstable; urgency=low
+-
+- * Applied patch from Graham Stoney <greyham@research.canon.com.au> that fixes deadlock
+- * if the server doesn't close its end until it reads EOF on the connection
+-
+- -- Robert S. Edmonds <stu@novare.net> Mon, 13 Sep 1999 21:53:59 -0400
+-
+- netcat (1.10-10) unstable; urgency=low
+-
+- * Man page fixed (/usr/doc/netcat/README.gz). Fixes bug #35811
+-
+- -- Robert S. Edmonds <edmonds@freewwweb.com> Sat, 12 Jun 1999 15:21:31 -0400
+-
+- netcat (1.10-9) unstable; urgency=low
+-
+- * Compiled with -DTELNET.
+-
+- -- Robert S. Edmonds <edmonds@freewwweb.com> Wed, 4 Nov 1998 09:27:40 -0500
+-
+- netcat (1.10-8) unstable frozen; urgency=low
+-
+- * At the request of many users (and a few bug reports) the binary is now
+- * going to be called "nc" as it always was.
+-
+- -- Robert S. Edmonds <edmonds@freewwweb.com> Sun, 26 Apr 1998 19:36:00 -0400
+-
+- netcat (1.10-7) unstable; urgency=low
+-
+- * Fixed lintian error possible-name-space-pollution. (binary nc -> netcat)
+-
+- -- Robert S. Edmonds <edmonds@freewwweb.com> Mon, 30 Mar 1998 19:11:49 -0500
+-
+- netcat (1.10-6) unstable; urgency=low
+-
+- * Upgraded to Standards-Version 2.4.0.0.
+-
+- -- Robert S. Edmonds <edmonds@freewwweb.com> Tue, 17 Feb 1998 13:06:22 -0500
+-
+- netcat (1.10-5) unstable; urgency=low
+-
+- * Merged in changes from Robert Woodcock <rcw@oz.net>.
+- - Man page updates.
+- - Compiled with -DTELNET
+- * Removed bogus menu file.
+- * Full source upload.
+-
+- -- Joey Hess <joeyh@master.debian.org> Sat, 10 Jan 1998 13:53:59 -0500
+-
+- netcat (1.10-4) unstable; urgency=low
+-
+- * Updated to "new" source format. (#9489)
+- * Libc6. (#11716)
+- * Orphaned the package.
+- * Fixed up description in control file to conform with policy, short
+- description doesn't include package name now.
+- * Fixed documentation location to comply with current policy. (#13194,
+- #11530, #9785)
+- * Wrote a man page. (#9785, #5304, #6647)
+- * Rewrote debian/rules to use debhelper.
+- * Install upstream changelog.
+-
+- -- Joey Hess <joeyh@master.debian.org> Sat, 10 Jan 1998 00:53:45 -0500
+-
+- Local variables:
+- mode: debian-changelog
+- add-log-mailing-address: "stu@novare.net"
+- End:
+--- 0 ----
diff -Nu ../nc110/compress ./compress
--- ../nc110/compress Thu Jan 1 01:00:00 1970
+++ ./compress Thu Sep 5 16:47:38 2002
@@ -0,0 +1,6 @@
+# Tell dh_compress to ignore the examples/ directory.
+find usr/info usr/man usr/X11*/man -type f
+find usr/doc -type f \
+ \( -size +4k -or -name "changelog*" \) \
+ ! -name "*.htm*" ! -name "*.gif" \
+ ! -name "copyright" | grep -v examples
diff -Nu ../nc110/control ./control
--- ../nc110/control Thu Jan 1 01:00:00 1970
+++ ./control Thu Sep 5 16:48:40 2002
@@ -0,0 +1,17 @@
+Source: netcat
+Section: net
+Priority: optional
+Maintainer: Robert S. Edmonds <stu@novare.net>
+Standards-Version: 2.4.1.0
+
+Package: netcat
+Architecture: any
+Depends: ${shlibs:Depends}
+Description: TCP/IP swiss army knife
+ A simple Unix utility which reads and writes data across network
+ connections using TCP or UDP protocol. It is designed to be a reliable
+ "back-end" tool that can be used directly or easily driven by other
+ programs and scripts. At the same time it is a feature-rich network
+ debugging and exploration tool, since it can create almost any kind of
+ connection you would need and has several interesting built-in
+ capabilities.
diff -Nu ../nc110/copyright ./copyright
--- ../nc110/copyright Thu Jan 1 01:00:00 1970
+++ ./copyright Thu Sep 5 16:48:40 2002
@@ -0,0 +1,72 @@
+This is the CrossLink/Debian prepackaged version of *Hobbit*'s pretty
+nifty "TCP/IP swiss army knife", netcat.
+
+CrossLink's Debian packages are maintained by Michael Shields
+<shields@crosslink.net>; their development is supported by CrossLink
+Internet Access and Networking Services, http://www.crosslink.net or
++1 703 642 1120 x154.
+
+The `netcat.blurb' file is appended.
+
+-----
+Netcat 1.10 is an updated release of Netcat, a simple Unix utility which reads
+and writes data across network connections using TCP or UDP protocol. It is
+designed to be a reliable "back-end" tool that can be used directly or easily
+driven by other programs and scripts. At the same time it is a feature-rich
+network debugging and exploration tool, since it can create almost any kind of
+connection you would need and has several interesting built-in capabilities.
+
+Some of netcat's major features are:
+
+ Outbound or inbound connections, TCP or UDP, to or from any ports
+ Full DNS forward/reverse checking, with appropriate warnings
+ Ability to use any local source port
+ Ability to use any locally-configured network source address
+ Built-in port-scanning capabilities, with randomizer
+ Built-in loose source-routing capability
+ Can read command line arguments from standard input
+ Slow-send mode, one line every N seconds
+ Hex dump of transmitted and received data
+ Optional ability to let another program service established connections
+ Optional telnet-options responder
+
+A very short list of potential uses:
+
+ Script backends
+ Scanning ports and inventorying services, automated probes
+ Backup handlers
+ File transfers
+ Server testing, simulation, debugging, and hijacking
+ Firewall testing
+ Proxy gatewaying
+ Network performance testing
+ Address spoofing tests
+ Protecting X servers
+ 1001 other uses you'll likely come up with
+
+Changes between the 1.00 release and this release:
+
+ Better portability -- updated generic.h and Makefile [thanx folks!]
+ Indication of local-end interface address on inbound connections
+ That's *Dave* Borman's telnet, not Paul Borman...
+ Better indication of DNS errors
+ Total byte counts printed if -v -v is used
+ A bunch of front-end driver companion programs and scripts
+ Better handling of stdin arguments-plus-data
+ Hex-dump feature
+ Telnet responder
+ Program exec works inbound or outbound now
+
+Netcat and the associated package is a product of Avian Research, and is freely
+available in full source form with no restrictions save an obligation to give
+credit where due. Get it via anonymous FTP at avian.org:/src/hacks/nc110.tgz
+which is a gzipped tar file and not to be confused with its version 1.00
+precursor, nc100.tgz. Other distribution formats can be accomodated upon
+request. Netcat is also mirrored at the following [faster] sites:
+
+ zippy.telcom.arizona.edu:/pub/mirrors/avian.org/hacks/nc110.tgz
+ ftp.sterling.com:/mirrors/avian.org/src/hacks/nc110.tgz
+ coast.cs.purdue.edu:/pub/tools/unix/netcat/nc110.tgz
+ ftp.rge.com:/pub/security/coast/mirrors/avian.org/netcat/nc110.tgz
+
+_H* 960320
Common subdirectories: ../nc110/data and ./data
diff -Nu ../nc110/generic.h ./generic.h
--- ../nc110/generic.h Sun Feb 18 01:36:44 1996
+++ ./generic.h Thu Sep 5 17:00:17 2002
@@ -70,6 +70,9 @@
/* a sysvism, I think, but ... */
#define HAVE_SYSINFO
+/* not found on cygwin as far as i know (kahl@informatik.uni-kl.de) */
+#define HAVE_RES_INIT
+
/* ============= */
/* Include files */
/* ============= */
@@ -359,6 +362,19 @@
#undef UTMPX
#undef HAVE_SELECT_X
#endif /* NeXTSTEP 3.2 motorola */
+
+/* cygwin unix-emulation-layer formWin9x/NT/...
+ * they try to be posix and linux compatible... */
+#ifdef CYGWIN
+#undef UTMPX
+#undef HAVE_SYSINFO
+#undef HAVE_SELECT_H
+#undef HAVE_TTYENT_H
+#define HAVE_NO_LSRR
+#define HAVE_NO_NOP
+#undef HAVE_RES_INIT
+#endif /* cygwin */
+
/* Make some "generic" assumptions if all else fails */
#ifdef GENERIC
diff -Nu ../nc110/nc.1 ./nc.1
--- ../nc110/nc.1 Thu Jan 1 01:00:00 1970
+++ ./nc.1 Thu Sep 5 16:48:40 2002
@@ -0,0 +1,134 @@
+.TH NC 1
+.SH NAME
+nc \- TCP/IP swiss army knife
+.SH SYNOPSIS
+.B nc
+.I "[-options] hostname port[s] [ports] ..."
+.br
+.B nc
+.I "-l -p port [-options] [hostname] [port]"
+.SH "DESCRIPTION"
+.B netcat
+is a simple unix utility which reads and writes data across network
+connections, using TCP or UDP protocol. It is designed to be a reliable
+"back-end" tool that can be used directly or easily driven by other programs
+and scripts. At the same time, it is a feature-rich network debugging and
+exploration tool, since it can create almost any kind of connection you
+would need and has several interesting built-in capabilities. Netcat, or
+"nc" as the actual program is named, should have been supplied long ago as
+another one of those cryptic but standard Unix tools.
+.P
+In the simplest usage, "nc host port" creates a TCP connection to the given
+port on the given target host. Your standard input is then sent to the host,
+and anything that comes back across the connection is sent to your standard
+output. This continues indefinitely, until the network side of the connection
+shuts down. Note that this behavior is different from most other applications
+which shut everything down and exit after an end-of-file on the standard input.
+.P
+Netcat can also function as a server, by listening for inbound connections
+on arbitrary ports and then doing the same reading and writing. With minor
+limitations, netcat doesn't really care if it runs in "client" or "server"
+mode -- it still shovels data back and forth until there isn't any more
+left. In either mode, shutdown can be forced after a configurable time of
+inactivity on the network side.
+.P
+And it can do this via UDP too, so netcat is possibly the "udp telnet-like"
+application you always wanted for testing your UDP-mode servers. UDP, as
+the "U" implies, gives less reliable data transmission than TCP connections
+and some systems may have trouble sending large amounts of data that way, but
+it's still a useful capability to have.
+.P
+You may be asking "why not just use telnet to connect to arbitrary ports?"
+Valid question, and here are some reasons. Telnet has the "standard input
+EOF" problem, so one must introduce calculated delays in driving scripts to
+allow network output to finish. This is the main reason netcat stays running
+until the *network* side closes. Telnet also will not transfer arbitrary
+binary data, because certain characters are interpreted as telnet options
+and are thus removed from the data stream. Telnet also emits some of its
+diagnostic messages to standard output, where netcat keeps such things
+religiously separated from its *output* and will never modify any of the
+real data in transit unless you *really* want it to. And of course telnet is
+incapable of listening for inbound connections, or using UDP instead. Netcat
+doesn't have any of these limitations, is much smaller and faster than telnet,
+and has many other advantages.
+.SH OPTIONS
+.TP 13
+.I \-g gateway
+source-routing hop point[s], up to 8
+.TP 13
+.I \-G num
+source-routing pointer: 4, 8, 12, ...
+.TP 13
+.I \-h
+Display help.
+.TP 13
+.I \-i secs
+delay interval for lines sent, ports scanned
+.TP 13
+.I \-l
+listen mode, for inbound connects
+.TP 13
+.I \-n
+numeric-only IP addresses, no DNS
+.TP 13
+.I \-o file
+hex dump of traffic
+.TP 13
+.I \-p port
+local port number
+(port numbers can be individual or ranges: lo-hi [inclusive])
+.TP 13
+.I \-q seconds
+Quit after EOF is detected on stdin and after a delay. "-q 0" makes "nc"
+quit as soon as EOF is detected.
+.TP 13
+.I \-r
+randomize local and remote ports
+.TP 13
+.I \-s addr
+local source address
+.TP 13
+.I \-t
+Enable telnet negotiation
+.TP 13
+.I \-u
+UDP mode
+.TP 13
+.I \-v
+verbose [use twice to be more verbose]
+.TP 13
+.I \-w secs
+timeout for connects and final net reads
+.TP 13
+.I \-z
+zero-I/O mode [used for scanning]
+.SH COPYRIGHT
+Netcat is entirely my own creation, although plenty of other code was used as
+examples. It is freely given away to the Internet community in the hope that
+it will be useful, with no restrictions except giving credit where it is due.
+No GPLs, Berkeley copyrights or any of that nonsense. The author assumes NO
+responsibility for how anyone uses it. If netcat makes you rich somehow and
+you're feeling generous, mail me a check. If you are affiliated in any way
+with Microsoft Network, get a life. Always ski in control. Comments,
+questions, and patches to hobbit@avian.org.
+.SH BUGS
+Efforts have been made to have netcat "do the right thing" in all its
+various modes. If you believe that it is doing the wrong thing under whatever
+circumstances, please notify me and tell me how you think it should behave.
+If netcat is not able to do some task you think up, minor tweaks to the code
+will probably fix that. It provides a basic and easily-modified template for
+writing other network applications, and I certainly encourage people to make
+custom mods and send in any improvements they make to it. Continued feedback
+from the Internet community is always welcome!
+.P
+Some port names in /etc/services contain hyphens -- netcat currently will not
+correctly parse those, so specify ranges using numbers if you can.
+.SH "SEE ALSO"
+/usr/doc/netcat/README.gz
+.SH AUTHOR
+This manual page was written by Joey Hess <joeyh@master.debian.org> and
+Robert Woodcock <rcw@rcw.oz.net>, cribbing heavily from Netcat's README
+file.
+.P
+Netcat was written by a guy we know as the Hobbit,
+or _H* <hobbit@avian.org>.
diff -Nu ../nc110/netcat.c ./netcat.c
--- ../nc110/netcat.c Thu Mar 21 00:38:04 1996
+++ ./netcat.c Thu Sep 5 16:58:33 2002
@@ -160,6 +160,7 @@
USHORT o_verbose = 0;
unsigned int o_wait = 0;
USHORT o_zero = 0;
+int o_quit = -1; /* 0 == quit-now; >0 == quit after o_quit seconds */
/* o_tn in optional section */
/* Debug macro: squirt whatever message and sleep a bit so we can see it go
@@ -211,7 +212,6 @@
o_verbose = 1;
holler (str, p1, p2, p3, p4, p5, p6);
close (netfd);
- sleep (1);
exit (1);
} /* bail */
@@ -222,7 +222,15 @@
errno = 0;
if (o_verbose > 1) /* normally we don't care */
bail (wrote_txt, wrote_net, wrote_out);
- bail (" punt!");
+ bail ("");
+}
+
+/* quit :
+ handler for a "-q" timeout (exit 0 instead of 1) */
+void quit()
+{
+ close(netfd);
+ exit(0);
}
/* timeout and other signal handling cruft */
@@ -235,9 +243,9 @@
longjmp (jbuf, jval);
}
-/* arm :
+/* arm_timer :
set the timer. Zero secs arg means unarm */
-void arm (num, secs)
+void arm_timer (num, secs)
unsigned int num;
unsigned int secs;
{
@@ -250,7 +258,7 @@
alarm (secs);
jval = num;
} /* if secs */
-} /* arm */
+} /* arm_timer */
/* Hmalloc :
malloc up what I want, rounded up to *4, and pre-zeroed. Either succeeds
@@ -713,6 +721,7 @@
if (gatesidx) { /* if we wanted any srcrt hops ... */
/* don't even bother compiling if we can't do IP options here! */
#ifdef IP_OPTIONS
+#ifndef HAVE_NO_LSRR
if (! optbuf) { /* and don't already *have* a srcrt set */
char * opp; /* then do all this setup hair */
optbuf = Hmalloc (48);
@@ -737,20 +746,23 @@
rr = setsockopt (nnetfd, IPPROTO_IP, IP_OPTIONS, optbuf, x);
if (rr == -1)
bail ("srcrt setsockopt fuxored");
+#else /* HAVE_NO_LSRR */
+ holler ("Warning: source routing unavailable on this machine, ignoring");
+#endif
#else /* IP_OPTIONS */
holler ("Warning: source routing unavailable on this machine, ignoring");
#endif /* IP_OPTIONS*/
} /* if gatesidx */
/* wrap connect inside a timer, and hit it */
- arm (1, o_wait);
+ arm_timer (1, o_wait);
if (setjmp (jbuf) == 0) {
rr = connect (nnetfd, (SA *)remend, sizeof (SA));
} else { /* setjmp: connect failed... */
rr = -1;
errno = ETIMEDOUT; /* fake it */
}
- arm (0, 0);
+ arm_timer (0, 0);
if (rr == 0)
return (nnetfd);
close (nnetfd); /* clean up junked socket FD!! */
@@ -820,14 +832,14 @@
actually does work after all. Yow. YMMV on strange platforms! */
if (o_udpmode) {
x = sizeof (SA); /* retval for recvfrom */
- arm (2, o_wait); /* might as well timeout this, too */
+ arm_timer (2, o_wait); /* might as well timeout this, too */
if (setjmp (jbuf) == 0) { /* do timeout for initial connect */
rr = recvfrom /* and here we block... */
(nnetfd, bigbuf_net, BIGSIZ, MSG_PEEK, (SA *) remend, &x);
Debug (("dolisten/recvfrom ding, rr = %d, netbuf %s ", rr, bigbuf_net))
} else
goto dol_tmo; /* timeout */
- arm (0, 0);
+ arm_timer (0, 0);
/* I'm not completely clear on how this works -- BSD seems to make UDP
just magically work in a connect()ed context, but we'll undoubtedly run
into systems this deal doesn't work on. For now, we apparently have to
@@ -845,12 +857,12 @@
/* fall here for TCP */
x = sizeof (SA); /* retval for accept */
- arm (2, o_wait); /* wrap this in a timer, too; 0 = forever */
+ arm_timer (2, o_wait); /* wrap this in a timer, too; 0 = forever */
if (setjmp (jbuf) == 0) {
rr = accept (nnetfd, (SA *)remend, &x);
} else
goto dol_tmo; /* timeout */
- arm (0, 0);
+ arm_timer (0, 0);
close (nnetfd); /* dump the old socket */
nnetfd = rr; /* here's our new one */
@@ -1216,6 +1228,7 @@
if (rr <= 0) { /* at end, or fukt, or ... */
FD_CLR (0, ding1); /* disable and close stdin */
close (0);
+ shutdown(fd, 1);
} else {
rzleft = rr;
zp = bigbuf_in;
@@ -1315,9 +1328,11 @@
char * randports = NULL;
#ifdef HAVE_BIND
+#ifdef HAVE_RES_INIT
/* can *you* say "cc -yaddayadda netcat.c -lresolv -l44bsd" on SunLOSs? */
res_init();
#endif
+#endif
/* I was in this barbershop quartet in Skokie IL ... */
/* round up the usual suspects, i.e. malloc up all the stuff we need */
lclend = (SAI *) Hmalloc (sizeof (SA));
@@ -1389,7 +1404,7 @@
/* If your shitbox doesn't have getopt, step into the nineties already. */
/* optarg, optind = next-argv-component [i.e. flag arg]; optopt = last-char */
- while ((x = getopt (argc, argv, "ae:g:G:hi:lno:p:rs:tuvw:z")) != EOF) {
+ while ((x = getopt (argc, argv, "ae:g:G:hi:lno:p:q:rs:tuvw:z")) != EOF) {
/* Debug (("in go: x now %c, optarg %x optind %d", x, optarg, optind)) */
switch (x) {
case 'a':
@@ -1443,6 +1458,8 @@
break;
case 'r': /* randomize various things */
o_random++; break;
+ case 'q': /* quit after stdin does EOF */
+ o_quit = atoi(optarg); break;
case 's': /* local source address */
/* do a full lookup [since everything else goes through the same mill],
unless -n was previously specified. In fact, careful placement of -n can
@@ -1651,6 +1668,7 @@
-o file hex dump of traffic\n\
-p port local port number\n\
-r randomize local and remote ports\n\
+ -q secs quit after EOF on stdin and delay of secs\n\
-s addr local source address");
#ifdef TELNET
holler ("\
diff -Nu ../nc110/rules ./rules
--- ../nc110/rules Thu Jan 1 01:00:00 1970
+++ ./rules Thu Sep 5 16:47:38 2002
@@ -0,0 +1,54 @@
+#!/usr/bin/make -f
+# Sample debian/rules that uses debhelper. GNU copyright 1997 by Joey Hess.
+
+# Uncomment this to turn on verbose mode.
+#export DH_VERBOSE=1
+
+build: build-stamp
+build-stamp:
+ dh_testdir
+ $(MAKE) CC="gcc" CFLAGS="-O2" linux
+
+clean:
+ dh_testdir
+ dh_testroot
+ rm -f build-stamp
+ # Add here commands to clean up after the build process.
+ -$(MAKE) clean
+ dh_clean
+
+# Build architecture-independent files here.
+binary-indep: build
+# We have nothing to do by default.
+
+# Build architecture-dependent files here.
+binary-arch: build
+ dh_testdir
+ dh_testroot
+ dh_clean -k
+ dh_installdirs usr/bin
+ install -s nc debian/tmp/usr/bin
+ dh_installdocs README
+ dh_installexamples data/ scripts/
+ dh_installmanpages
+ dh_installchangelogs Changelog
+ dh_movefiles
+ dh_strip
+ dh_compress
+ gzip -9v debian/tmp/usr/share/man/man1/nc.1
+ gzip -9v debian/tmp/usr/share/doc/netcat/changelog.Debian
+ gzip -9v debian/tmp/usr/share/doc/netcat/changelog
+ dh_fixperms
+ dh_suidregister
+ dh_installdeb
+ dh_shlibdeps
+ dh_gencontrol
+ dh_makeshlibs
+ dh_md5sums
+ dh_builddeb
+
+source diff:
+ @echo >&2 'source and diff are obsolete - use dpkg-source -b'; false
+
+binary: binary-indep binary-arch
+.PHONY: build clean binary-indep binary-arch binary
Common subdirectories: ../nc110/scripts and ./scripts
[-- Attachment #3: Type: text/plain, Size: 214 bytes --]
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^ permalink raw reply [flat|nested] 10+ messages in thread
* RE: Compiling netcat under cygwin
@ 2002-09-05 7:52 Nenad Antic (EAB)
0 siblings, 0 replies; 10+ messages in thread
From: Nenad Antic (EAB) @ 2002-09-05 7:52 UTC (permalink / raw)
To: 'Bjoern Kahl AG Resy'; +Cc: 'cygwin@cygwin.com'
Bjoern!
You're the man. Thank you !!!
This solved my problems and resolves me from dealing with the windoze issues that have plagued me for several days.
Best regards,
/Nenad
PS. I might be a good idea to post this patch somewhere on the cygwin site for other poor souls that might need it.
> -----Original Message-----
> From: Bjoern Kahl AG Resy [mailto:kahl@informatik.uni-kl.de]
> Sent: Thursday, September 05, 2002 3:09 PM
> To: Nenad Antic (EAB)
> Cc: 'cygwin@cygwin.com'
> Subject: Re: Compiling netcat under cygwin
>
>
>
> Hallo !
>
>
> On Thu, 5 Sep 2002, Nenad Antic (EAB) wrote:
> > I would like to get netcat
> > (http://www.atstake.com/research/tools/nc110.tgz) compiled natively
> > under cygwin. Currently there isn't any appropriate target in
> > netcat's makefile to do this.
> >
> > I do know that there is a Windows NT version available at
> >
> > http://www.atstake.com/research/tools/nc11nt.zip
> >
> > However, when using that version under cygwin netcat behaves a bit
> > funny.
>
> [ ... ]
>
> > Would anybody know how to set up the gcc options so that netcat
> > can compile under cygwin properly? I would be really grateful
> > for this information.
>
> Please find the attached patch.
> unpack the above mentioned tar-file in a empty directory,
> save the patch in the same directory, then run in that directory
> patch <netcat-cygwin.patch
> make cygwin
> You should find a nc binary after these steps in the directory.
>
> Note: I am in no connection to the netcat maintainer, neither
> native or cygwin, and I have no plans to maintain a
> cygwin-version. I just taken 10 minutes to hack this up.
>
>
> Bjoern
>
> --
> +-------------------------------------------------------------
> --------+
> | Dipl.-Phys. Bjoern Kahl +++ AG Embedded Systems and
> Robotics (RESY) |
> | Informatics Faculty +++ Building 48 +++ University of
> Kaiserslautern|
> | phone: +49-631-205-2654 +++ www:
http://resy.informatik.uni-kl.de |
+---------------------------------------------------------------------+
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: Compiling netcat under cygwin
2002-09-05 3:15 Nenad Antic (EAB)
@ 2002-09-05 6:09 ` Bjoern Kahl AG Resy
0 siblings, 0 replies; 10+ messages in thread
From: Bjoern Kahl AG Resy @ 2002-09-05 6:09 UTC (permalink / raw)
To: Nenad Antic (EAB); +Cc: 'cygwin@cygwin.com'
[-- Attachment #1: Type: TEXT/PLAIN, Size: 1434 bytes --]
Hallo !
On Thu, 5 Sep 2002, Nenad Antic (EAB) wrote:
> I would like to get netcat
> (http://www.atstake.com/research/tools/nc110.tgz) compiled natively
> under cygwin. Currently there isn't any appropriate target in
> netcat's makefile to do this.
>
> I do know that there is a Windows NT version available at
>
> http://www.atstake.com/research/tools/nc11nt.zip
>
> However, when using that version under cygwin netcat behaves a bit
> funny.
[ ... ]
> Would anybody know how to set up the gcc options so that netcat
> can compile under cygwin properly? I would be really grateful
> for this information.
Please find the attached patch.
unpack the above mentioned tar-file in a empty directory,
save the patch in the same directory, then run in that directory
patch <netcat-cygwin.patch
make cygwin
You should find a nc binary after these steps in the directory.
Note: I am in no connection to the netcat maintainer, neither
native or cygwin, and I have no plans to maintain a
cygwin-version. I just taken 10 minutes to hack this up.
Bjoern
--
+---------------------------------------------------------------------+
| Dipl.-Phys. Bjoern Kahl +++ AG Embedded Systems and Robotics (RESY) |
| Informatics Faculty +++ Building 48 +++ University of Kaiserslautern|
| phone: +49-631-205-2654 +++ www: http://resy.informatik.uni-kl.de |
+---------------------------------------------------------------------+
[-- Attachment #2: Type: TEXT/PLAIN, Size: 2599 bytes --]
diff -u netcat.orig/Makefile /Makefile
--- netcat.orig/Makefile Wed Mar 20 04:16:06 1996
+++ /Makefile Thu Sep 5 13:47:30 2002
@@ -109,9 +109,16 @@
next:
make -e $(ALL) $(MFLAGS) XFLAGS='-DNEXT' STATIC=-Bstatic
+
+# cygwin Unix-emulationlayer for Win9x/NT/...
+cygwin:
+ make -e $(ALL) $(MFLAGS) XFLAGS='-DCYGWIN' STATIC= CC=gcc
+
+
# start with this for a new architecture, and see what breaks.
generic:
make -e $(ALL) $(MFLAGS) XFLAGS='-DGENERIC' STATIC=
+
# Still at large: dgux dynix ???
diff -u netcat.orig/generic.h /generic.h
--- netcat.orig/generic.h Sun Feb 18 02:36:43 1996
+++ /generic.h Thu Sep 5 14:17:18 2002
@@ -70,6 +70,9 @@
/* a sysvism, I think, but ... */
#define HAVE_SYSINFO
+/* not found on cygwin as far as i know (kahl@informatik.uni-kl.de) */
+#define HAVE_RES_INIT
+
/* ============= */
/* Include files */
/* ============= */
@@ -359,6 +362,20 @@
#undef UTMPX
#undef HAVE_SELECT_X
#endif /* NeXTSTEP 3.2 motorola */
+
+
+/* cygwin unix-emulation-layer formWin9x/NT/...
+ * they try to be posix and linux compatible... */
+#ifdef CYGWIN
+#undef UTMPX
+#undef HAVE_SYSINFO
+#undef HAVE_SELECT_H
+#undef HAVE_TTYENT_H
+#define HAVE_NO_LSRR
+#define HAVE_NO_NOP
+#undef HAVE_RES_INIT
+#endif /* cygwin */
+
/* Make some "generic" assumptions if all else fails */
#ifdef GENERIC
diff -u netcat.orig/netcat.c /netcat.c
--- netcat.orig/netcat.c Thu Mar 21 01:38:04 1996
+++ /netcat.c Thu Sep 5 14:09:48 2002
@@ -713,6 +713,7 @@
if (gatesidx) { /* if we wanted any srcrt hops ... */
/* don't even bother compiling if we can't do IP options here! */
#ifdef IP_OPTIONS
+#ifndef HAVE_NO_LSRR
if (! optbuf) { /* and don't already *have* a srcrt set */
char * opp; /* then do all this setup hair */
optbuf = Hmalloc (48);
@@ -737,6 +738,9 @@
rr = setsockopt (nnetfd, IPPROTO_IP, IP_OPTIONS, optbuf, x);
if (rr == -1)
bail ("srcrt setsockopt fuxored");
+#else /* HAVE_NO_LSRR */
+ holler ("Warning: source routing unavailable on this machine, ignoring");
+#endif
#else /* IP_OPTIONS */
holler ("Warning: source routing unavailable on this machine, ignoring");
#endif /* IP_OPTIONS*/
@@ -1315,8 +1319,10 @@
char * randports = NULL;
#ifdef HAVE_BIND
+#ifdef HAVE_RES_INIT
/* can *you* say "cc -yaddayadda netcat.c -lresolv -l44bsd" on SunLOSs? */
res_init();
+#endif
#endif
/* I was in this barbershop quartet in Skokie IL ... */
/* round up the usual suspects, i.e. malloc up all the stuff we need */
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Compiling netcat under cygwin
@ 2002-09-05 3:15 Nenad Antic (EAB)
2002-09-05 6:09 ` Bjoern Kahl AG Resy
0 siblings, 1 reply; 10+ messages in thread
From: Nenad Antic (EAB) @ 2002-09-05 3:15 UTC (permalink / raw)
To: 'cygwin@cygwin.com'
Hi,
I would like to get netcat (http://www.atstake.com/research/tools/nc110.tgz) compiled natively under cygwin. Currently there isn't any appropriate target in netcat's makefile to do this.
I do know that there is a Windows NT version available at
http://www.atstake.com/research/tools/nc11nt.zip
However, when using that version under cygwin netcat behaves a bit funny. I obviously don't know exactly what the problem is, but it seems to be some buffering issue with the input and output streams. This makes it quite hard to use as intended, especially when invoking it in scripts. (I tried using ActiveState's Perl directly under windows native command shell for scripting instead, but it had other "issues", like problems with fork, a broken open3 and more.)
Would anybody know how to set up the gcc options so that netcat can compile under cygwin properly? I would be really grateful for this information.
Best regards,
/Nenad Antic
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^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2002-09-11 14:13 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
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2002-09-11 7:14 Compiling netcat under cygwin Nenad Antic (EAB)
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2002-09-09 2:37 Nenad Antic (EAB)
2002-09-09 5:25 ` Gareth Pearce
2002-09-09 20:26 ` Gary R. Van Sickle
2002-09-09 23:01 ` Christopher Faylor
2002-09-05 10:51 Nenad Antic (EAB)
2002-09-06 10:53 ` Nicholas Wourms
2002-09-05 7:52 Nenad Antic (EAB)
2002-09-05 3:15 Nenad Antic (EAB)
2002-09-05 6:09 ` Bjoern Kahl AG Resy
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