[getdns-api] getdns-1.3.0 released

Willem Toorop willem at nlnetlabs.nl
Fri Dec 22 13:13:22 CET 2017 

Dear all,

I am pleased to announce the new Christmas 2017 bugfix release, version
1.3.0 of getdns.

Recently Stubby has seen increased interest.  Already after the release
of the Windows installer, but even more so after the introduction of
Quad9 and the description of how to use DNS-over-TLS with Stubby by Alex
Band[1] and Stéphane Borzmeyer[2].

The increased install base has generated excellent feedback and has also
revealed some bugs. This release has those bugs fixed, and also contains
a few more configuration options to be able to adapt to more diverse
situations.

The bugs fixed with this release are:

  * A segfault with the native DNSSEC validation code when DS and DNSKEY
    queries timed out,

  * A non RFC compliant edns_client_subnet_private option that caused
    some upstream EDNS Client Subnet implementations (i.e. Unbound's) to
    return FORMERR, and

  * Doing the meta queries for Zero configuration DNSSEC with the
    resolvers from /etc/resolv.conf, which caused Stubby to query itself
    for this, effectively breaking the possibility to fetch the root
    trust-anchors and bootstrap DNSSEC.

Besides these fixes, this release allows to configure a getdns_context
to be initialized with resolv.conf and hosts at alternative locations,
with the getdns_context_set_resolvconf() and getdns_context_set_hosts()
functions.

Also TLS parameters for DNS-over-TLS are more configurable:

  * The CA store, for authenticating DNS-over-TLS upstreams, can be
    specified with the getdns_context_set_tls_ca_path() and
    getdns_context_set_tls_ca_file() functions.

  * The default available ciphers are configurable with the
    getdns_context_set_tls_cipher_list() functions. The default
    available cipher list has been adapted to support TLS1.3 too linked
    with a TLS1.3 supporting version of OpenSSL (i.e. >= 1.1.1).
    Available ciphers can be set for specific upstreams to with
    getdns_context_set_upstream_recursive_servers().

The getdns_context_get_api_information() function exposes more
getdns_context settings, amongst which:

  * The default settings for extensions,

  * The paths for files that were used to initialize a getdns_context
    (resolv.conf, hosts and trust anchors), and

  * More information about the version, configuration and capabilities
    of the OpenSSL library in use.


This release includes the 0.2.1 release of Stubby. The most prominent
bugfix therein is to not do DNSSEC validation for queries with the CD
bit set, when DNSSEC validation was not configured in the first place.
This bug caused decreased performance for configurations with an unbound
forwarding to Stubby.

The 0.2.1 release of Stubby also includes some additional auxiliary
functionality which is used by the macOS prototype GUI that was just
released: https://dnsprivacy.org/wiki/display/DP/Stubby+GUI+for+macOS


This release has version number 1.3.0 and not 1.2.2, for which the
release candidate was created, because we comply to the Semantic
Versioning 2.0.0 scheme, and a few new functions are introduced into the
API. The other change from the release candidate is that the Certificate
Authority store location settings are now prepended with tls_, like all
other setting influencing DNS-over-TLS.

Merry Christmas & Happy New year from the getdns team!


link  : https://getdnsapi.net/dist/getdns-1.3.0.tar.gz
pgp   : https://getdnsapi.net/dist/getdns-1.3.0.tar.gz.asc
sha256: 920fa2e07c72fd0e5854db1820fa777108009fc5cb702f9aa5155ef58b12adb1


ChangeLog
=========
* 2017-12-21: Version 1.3.0
  * Bugfix #300: Detect dnsmasq and skip unit test that fails with it.
    Thanks Tim Rühsen and Konomi Kitten
  * Specify default available cipher suites for authenticated TLS
    upstreams with getdns_context_set_tls_ciphers_list()
    An upstream specific available cipher suite may also be given
    with the tls_cipher_list setting in the upstream dict with
    getdns_context_set_upstream_recursive_servers()
  * PR #366: Add support for TLS 1.3 and Chacha20-Poly1305
    Thanks Pascal Ernster
  * Bugfix #356: Do Zero configuration DNSSEC meta queries over on the
    context configured upstreams.  Thanks Andreas Schulze
  * Report default extension settings with
    getdns_context_get_api_information()
  * Specify locations at which CA certificates for verification purposes
    are located: getdns_context_set_tls_ca_path()
    getdns_context_set_tls_ca_file()
  * getdns_context_set_resolvconf() function to initialize a context
    upstreams and suffices with a resolv.conf file.
    getdns_context_get_resolvconf() to get the file used to initialize
    the context's upstreams and suffixes.
    getdns_context_set_hosts() function to initialize a context's
    LOCALNAMES namespace.
    getdns_context_get_hosts() function to get the file used to
    initialize the context's LOCALNAMES namespace.
  * get which version of OpenSSL was used at build time and at run time
    when available with getdns_context_get_api_information()
  * GETDNS_RETURN_IO_ERROR return error code
  * Bugfix #359: edns_client_subnet_private should set family
    Thanks Daniel Areiza & Andreas Schulze
  * Bugfix getdnsapi/stubby#34: Segfault issue with native DNSSEC
    validation.  Thanks Bruno Pagani


Stubby ChangeLog
================
* 2017-12-18: Version 0.2.1
 * Fix use of logging on macos 10.11

* 2017-12-18: Version 0.2.0
 * Add Powershell scripts for Windows 7 that will update the IPv4 DNS
   resolvers.
 * Add Windows scripts to enable a Scheduled task for stubby
 * Add files to support a separate macOS GUI application to manage
   stubby https://dnsprivacy.org/wiki/x/CIBn
 * Add Quad9 details to the configuration file
 * Bugfix #48: Do not do native DNSSEC validation when cd bit was
   received (for example from an unbound forwarder), but DNSSEC
   validation was not enabled in the first place.
 * Bugfix getdnsapi/getdns#358: Parse config files given with the
   -C option that have an .yaml extension as YAML not JSON.
   Thanks Ollivier Robert


References
==========
[1]
https://medium.com/@alexander_band/privacy-using-dns-over-tls-with-the-new-quad9-dns-service-1ff2d2b687c5
[2]
https://labs.ripe.net/Members/stephane_bortzmeyer/quad9-a-public-dns-resolver-with-security

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