-
- GNU adns
+ GNU adns
Advanced, easy to use, asynchronous-capable DNS client library and
utilities.
In contrast with the standard interfaces, gethostbyname et al and
libresolv, it has the following features:
- * It is reasonably easy to use for simple programs which just want
- to translate names to addresses, look up MX records, etc.
+ * It is reasonably easy to use for simple programs which just want to
+ translate names to addresses, look up MX records, etc.
* It can be used in an asynchronous, non-blocking, manner. Many
queries can be handled simultaneously.
* Responses are decoded automatically into a natural representation
- for a C program - there is no need to deal with DNS packet
- formats.
+ for a C program - there is no need to deal with DNS packet and
+ RRDATA formats.
* Sanity checking (eg, name syntax checking, reverse/forward
- correspondence, CNAME pointing to CNAME) is performed
- automatically.
- * Time-to-live, CNAME and other similar information is returned in
- an easy-to-use form, without getting in the way.
+ correspondence, CNAME pointing to CNAME) is performed automatically
+ by default.
+ * Time-to-live, CNAME and other similar information is returned in an
+ easy-to-use form, without getting in the way.
* There is no global state in the library; resolver state is an
opaque data structure which the client creates explicitly. A
program can have several instances of the resolver.
* Errors are reported to the application in a way that distinguishes
the various causes of failure properly.
- * Understands conventional resolv.conf, but this can overridden by
- environment variables.
+ * adns understands conventional resolv.conf, but this can overridden
+ by environment variables.
* Flexibility. For example, the application can tell adns to: ignore
environment variables (for setuid programs), disable hostname
syntax sanity checks to return arbitrary data, override or ignore
delaying the output. For example, you can usefully pipe the output
of netstat -n, tcpdump -ln, and the like, into it.
* adnshost is a general-purpose DNS lookup utility which can be used
- easily in from the command line and from shell scripts to do
- simple lookups. In a more advanced mode it can be used as a
+ easily in from the command line and from shell scripts to do simple
+ lookups. In a more advanced mode it can be used as a
general-purpose DNS helper program for scripting languages which
can invoke and communicate with subprocesses. See the [1]adnshost
usage message for a summary of its capabilities.
I'd be pleased if you would let me know if you're using my library in
your project, and what you think of it.
- If you are subscribed to adns-discuss please send feedback, including
- bug reports, there; otherwise send mail to
- adns-bugreports@chiark.greenend.org.uk. If you'd prefer that your
- message wasn't forwarded to the adns-bugreports list, send it to
- adns-maint@chiark.greenend.org.uk.
+ Bug reports should be reported to the [3]GNU Debbugs. Send an email to
+ submit@debbugs.gnu.org and at the top of your email, in a paragraph of
+ its own, write the single line
+Package: adns
+
+ Your bug report will be published via to the adns-discuss list.
+
+ Feedback and discussion takes place on the adns-discuss list. You can
+ mail me privately at ijackson@chiark.greenend.org.uk.
Mailinglists
I have set up mailinglists adns-announce and adns-discuss. The
announcements list is moderated and will contain only announcements of
- important bugs, new versions, etc. The bug reports address mentioned
- above is also a mailing list; feel free to subscribe to it.
+ important bugs, new versions, etc.
- There are [3]archives and subscription web pages, or you can subscribe
+ There are [4]archives and subscription web pages, or you can subscribe
by sending mail containing the word `subscribe' to
adns-announce-REQUEST@chiark.greenend.org.uk or
adns-discuss-REQUEST@chiark.greenend.org.uk.
-Download
+Documentation
+
+ * [5]adns.h API header file with documentation comments
+ * [6]usage message for adnshost
+
+Download and source code
- Available for download from [4]chiark.greenend.org.uk are:
- * The [5]current release as a gzipped tarfile.
- * [6]adns.h API header file with comments, and [7]usage message for
- adnshost (currently there is no manual, sorry).
- * All versions released so far are also available via [8]anonymous
- FTP and [9]HTTP,
- * A mirror of my CVS repository is available via rsync from
- rsync.chiark.greenend.org.uk::ftp/users/ian/cvs-pub/adns (use FTP
- first to find your way around), or via [10]cvsweb.
+ * The [7]current release as a gzipped tarfile.
+ * [8]Previous versions and other files (including OpenPGP
+ signatures).
+ * [9]master git (version control) repository browser.
- adns is also available from the [11]GNU Project FTP servers and their
- [12]mirrors.
+ adns is also available from the [10]GNU Project FTP servers and their
+ [11]mirrors.
-Technical note
+Installation note
- adns requires a real nameserver like [13]BIND or [14]Dents running on
- the same system or a nearby one, which must be willing to provide
- `recursive service'. I.e., adns is a `stub resolver'. All properly
- configured UN*X and GNU systems will already have such nameserver(s);
- they are usually listed in /etc/resolv.conf.
+ adns requires a real nameserver like BIND running on the same system or
+ a nearby one, which must be willing to provide `recursive service'.
+ I.e., adns is a `stub resolver'.
+
+ adns requires that your real nameserver is on the same machine, or
+ connected via a secure network, so that an attacker cannot fake the
+ replies to adns's queries.
References and related projects
- There is a [15]port to MS Visual Studio 6 C++ by Jarle Aase.
+ * [12]Python bindings by Andy Dustman.
+ * [13]liboop event loop library has a built-in binding for adns.
+ * [14]port to MS Visual Studio 6 C++ by Jarle Aase.
Copyright and licensing
- adns is Copyright 1997-2000 Ian Jackson, Copyright 1999-2000 Tony
- Finch, and Copyright (C) 1991 Massachusetts Institute of Technology.
+ adns is Copyright 1997-2000,2003,2006,2014 Ian Jackson, Copyright 2014
+ Mark Wooding, Copyright 1999-2000,2003,2006 Tony Finch, and Copyright
+ (C) 1991 Massachusetts Institute of Technology.
adns is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
- Software Foundation; either version 2 of the License, or (at your
+ Software Foundation; either version 3 of the License, or (at your
option) any later version.
This program and documentation is distributed in the hope that it will
be useful, but without any warranty; without even the implied warranty
- of merchantability or fitness for a particular purpose. See the
- [16]GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with adns, or one should be available above; if not, write to
- the [17]Free Software Foundation, 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA, or email adns-maint@chiark.greenend.org.uk.
- _________________________________________________________________
+ of merchantability or fitness for a particular purpose. See the [15]GNU
+ General Public License for more details.
- [18]Ian Jackson / [19]adns-maint@chiark.greenend.org.uk; more [20]free
- software by me.
+ You should have received a copy of the GNU General Public License along
+ with adns, or one should be available above; if not, write to the
+ [16]Free Software Foundation or email ijackson@chiark.greenend.org.uk.
+ __________________________________________________________________
- [21]GNU home page; [22]chiark home page; [23]site or mirror home page
+ Ian Jackson / ijackson@chiark.greenend.org.uk.
- This web page is Copyright (C)1996-2000 Ian Jackson. See the
- [24]Copyright/acknowledgements.
+ [17]GNU home page; [18]chiark home page; [19]site or mirror home page
- Use any browser - [25]Campaign for a non-browser-specific WWW
+ This web page is Copyright (C)1996-2005,2014 Ian Jackson. See the
+ [20]Copyright/acknowledgements.
References
- 1. http://www.chiark.greenend.org.uk/~ian/adns/adnshost.txt
- 2. http://www.chiark.greenend.org.uk/~ian/adns/adns.h.txt
- 3. http://www.chiark.greenend.org.uk/mailman/listinfo
- 4. http://www.chiark.greenend.org.uk/~ian/adns/
- 5. http://www.chiark.greenend.org.uk/~ian/adns/adns.tar.gz
- 6. http://www.chiark.greenend.org.uk/~ian/adns/adns.h.txt
- 7. http://www.chiark.greenend.org.uk/~ian/adns/adnshost.txt
- 8. ftp://ftp.chiark.greenend.org.uk/users/ian/adns/
- 9. http://www.chiark.greenend.org.uk/~ian/adns/ftp/
- 10. http://www.chiark.greenend.org.uk/ucgi/~ijackson/cvsweb/adns/
- 11. http://www.gnu.org/
- 12. http://www.gnu.org/order/ftp.html
- 13. http://www.isc.org/view.cgi?/products/BIND/index.phtml
- 14. http://www.dents.org/
- 15. http://adns.jgaa.com/
- 16. http://www.chiark.greenend.org.uk/~ian/COPYING.txt
- 17. http://www.fsf.org/
+ 1. http://www.chiark.greenend.org.uk/~ian/adns/docs/adnshost.txt
+ 2. http://www.chiark.greenend.org.uk/~ian/adns/docs/adns.h.txt
+ 3. http://debbugs.gnu.org/
+ 4. http://www.chiark.greenend.org.uk/mailman/listinfo
+ 5. http://www.chiark.greenend.org.uk/~ian/adns/docs/adns.h.txt
+ 6. http://www.chiark.greenend.org.uk/~ian/adns/docs/adnshost.txt
+ 7. http://www.chiark.greenend.org.uk/~ian/adns/adns.tar.gz
+ 8. http://www.chiark.greenend.org.uk/~ian/adns/ftp/
+ 9. http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git/adns.git/
+ 10. http://www.gnu.org/
+ 11. http://www.gnu.org/order/ftp.html
+ 12. http://code.google.com/p/adns-python
+ 13. http://www.lysator.liu.se/liboop/
+ 14. http://adns.jgaa.com/
+ 15. http://www.chiark.greenend.org.uk/~ian/adns/docs/COPYING.txt
+ 16. http://www.fsf.org/
+ 17. http://www.gnu.org/
18. http://www.chiark.greenend.org.uk/
- 19. mailto:adns-maint@chiark.greenend.org.uk
- 20. http://www.chiark.greenend.org.uk/~ian/software/
- 21. http://www.gnu.org/
- 22. http://www.chiark.greenend.org.uk/
- 23. file://localhost/
- 24. http://www.chiark.greenend.org.uk/~ian/sw-www-copy.html
- 25. http://www.anybrowser.org/campaign/
+ 19. file://localhost/
+ 20. http://www.chiark.greenend.org.uk/~ian/sw-www-copy.html
~ianmdlvl / adns.git / blobdiff