Switch to maven central minidns
This commit is contained in:
Rene Treffer
parent
df742ce1e1
commit
20eb770356
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@ -28,7 +28,6 @@ repositories {
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}
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}
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dependencies {
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dependencies {
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compile project(':libs:minidns')
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compile project(':libs:openpgp-api-lib')
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compile project(':libs:openpgp-api-lib')
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compile project(':libs:MemorizingTrustManager')
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compile project(':libs:MemorizingTrustManager')
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compile 'com.android.support:support-v13:21.0.3'
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compile 'com.android.support:support-v13:21.0.3'
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@ -37,6 +36,7 @@ dependencies {
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compile 'org.gnu.inet:libidn:1.15'
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compile 'org.gnu.inet:libidn:1.15'
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compile 'com.google.zxing:core:3.1.0'
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compile 'com.google.zxing:core:3.1.0'
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compile 'com.google.zxing:android-integration:3.1.0'
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compile 'com.google.zxing:android-integration:3.1.0'
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compile 'de.measite.minidns:minidns:0.1.3'
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}
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}
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android {
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android {
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@ -1,107 +0,0 @@
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# From https://github.com/github/gitignore
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# # # # # # # # # # # #
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# Android gitignore #
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# # # # # # # # # # # #
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# Built application files
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*.apk
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*.ap_
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# Files for the Dalvik VM
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*.dex
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# Java class files
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*.class
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# Generated files
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bin/
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gen/
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# Gradle files
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.gradle/
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build/
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# Local configuration file (sdk path, etc)
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local.properties
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gradle.properties
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# Proguard folder generated by Eclipse
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proguard/
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# # # # # # # #
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# VIM / Linux #
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# # # # # # # #
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[._]*.s[a-w][a-z]
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[._]s[a-w][a-z]
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*.un~
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Session.vim
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.netrwhist
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*~
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# # # # # #
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# Eclipse #
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tmp/
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*~.nib
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local.properties
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.loadpath
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.classpath
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.project
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# External tool builders
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# Locally stored "Eclipse launch configurations"
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# CDT-specific
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# PDT-specific
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# sbteclipse plugin
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# TeXlipse plugin
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.texlipse
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# # # # #
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# OS X #
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# # # # #
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.DS_Store
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.AppleDouble
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# Icon must ends with two \r.
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Icon
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# Thumbnails
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@ -1,4 +0,0 @@
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This software may be used under the terms of (at your choice)
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- LGPL version 2 (or later) (see LICENCE_LGPL2.1 for details)
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- Apache Software licence (see LICENCE_APACHE for details)
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- WTFPL (see LICENCE_WTFPL for details)
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@ -1,178 +0,0 @@
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Apache License
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GNU LESSER GENERAL PUBLIC LICENSE
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|
||||||
14. If you wish to incorporate parts of the Library into other free
|
|
||||||
programs whose distribution conditions are incompatible with these,
|
|
||||||
write to the author to ask for permission. For software which is
|
|
||||||
copyrighted by the Free Software Foundation, write to the Free
|
|
||||||
Software Foundation; we sometimes make exceptions for this. Our
|
|
||||||
decision will be guided by the two goals of preserving the free status
|
|
||||||
of all derivatives of our free software and of promoting the sharing
|
|
||||||
and reuse of software generally.
|
|
||||||
|
|
||||||
NO WARRANTY
|
|
||||||
|
|
||||||
15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
|
|
||||||
WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
|
|
||||||
EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
|
|
||||||
OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
|
|
||||||
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
|
|
||||||
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
||||||
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
|
|
||||||
LIBRARY IS WITH YOU. SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
|
|
||||||
THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
|
||||||
|
|
||||||
16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
|
|
||||||
WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
|
|
||||||
AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
|
|
||||||
FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
|
|
||||||
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
|
|
||||||
LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
|
|
||||||
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
|
|
||||||
FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
|
|
||||||
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
|
|
||||||
DAMAGES.
|
|
||||||
|
|
||||||
END OF TERMS AND CONDITIONS
|
|
||||||
|
|
||||||
How to Apply These Terms to Your New Libraries
|
|
||||||
|
|
||||||
If you develop a new library, and you want it to be of the greatest
|
|
||||||
possible use to the public, we recommend making it free software that
|
|
||||||
everyone can redistribute and change. You can do so by permitting
|
|
||||||
redistribution under these terms (or, alternatively, under the terms of the
|
|
||||||
ordinary General Public License).
|
|
||||||
|
|
||||||
To apply these terms, attach the following notices to the library. It is
|
|
||||||
safest to attach them to the start of each source file to most effectively
|
|
||||||
convey the exclusion of warranty; and each file should have at least the
|
|
||||||
"copyright" line and a pointer to where the full notice is found.
|
|
||||||
|
|
||||||
<one line to give the library's name and a brief idea of what it does.>
|
|
||||||
Copyright (C) <year> <name of author>
|
|
||||||
|
|
||||||
This library is free software; you can redistribute it and/or
|
|
||||||
modify it under the terms of the GNU Lesser General Public
|
|
||||||
License as published by the Free Software Foundation; either
|
|
||||||
version 2.1 of the License, or (at your option) any later version.
|
|
||||||
|
|
||||||
This library 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 GNU
|
|
||||||
Lesser General Public License for more details.
|
|
||||||
|
|
||||||
You should have received a copy of the GNU Lesser General Public
|
|
||||||
License along with this library; if not, write to the Free Software
|
|
||||||
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
||||||
|
|
||||||
Also add information on how to contact you by electronic and paper mail.
|
|
||||||
|
|
||||||
You should also get your employer (if you work as a programmer) or your
|
|
||||||
school, if any, to sign a "copyright disclaimer" for the library, if
|
|
||||||
necessary. Here is a sample; alter the names:
|
|
||||||
|
|
||||||
Yoyodyne, Inc., hereby disclaims all copyright interest in the
|
|
||||||
library `Frob' (a library for tweaking knobs) written by James Random Hacker.
|
|
||||||
|
|
||||||
<signature of Ty Coon>, 1 April 1990
|
|
||||||
Ty Coon, President of Vice
|
|
||||||
|
|
||||||
That's all there is to it!
|
|
||||||
|
|
||||||
|
|
@ -1,13 +0,0 @@
|
||||||
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
|
|
||||||
Version 2, December 2004
|
|
||||||
|
|
||||||
Copyright (C) 2014 Rene Treffer <treffer+wtfpl@measite.de>
|
|
||||||
|
|
||||||
Everyone is permitted to copy and distribute verbatim or modified
|
|
||||||
copies of this license document, and changing it is allowed as long
|
|
||||||
as the name is changed.
|
|
||||||
|
|
||||||
DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
|
|
||||||
TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
|
|
||||||
|
|
||||||
0. You just DO WHAT THE FUCK YOU WANT TO.
|
|
||||||
|
|
@ -1,8 +0,0 @@
|
||||||
MiniDNS
|
|
||||||
-------
|
|
||||||
|
|
||||||
MiniDNS is a minimal dns client library for android. It can parse a basic set
|
|
||||||
of resource records (A, AAAA, NS, SRV) and is easy to use and extend.
|
|
||||||
|
|
||||||
This library is not intended to be used as a DNS server. You might want to
|
|
||||||
look into dnsjava for such functionality.
|
|
||||||
|
|
@ -1,80 +0,0 @@
|
||||||
apply plugin: 'java'
|
|
||||||
apply plugin: 'eclipse'
|
|
||||||
apply plugin: 'osgi'
|
|
||||||
apply plugin: 'nexus'
|
|
||||||
|
|
||||||
buildscript {
|
|
||||||
repositories {
|
|
||||||
jcenter()
|
|
||||||
mavenLocal()
|
|
||||||
mavenCentral()
|
|
||||||
}
|
|
||||||
|
|
||||||
dependencies {
|
|
||||||
classpath 'org.gradle.api.plugins:gradle-nexus-plugin:0.7.1'
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
group = 'de.measite.minidns'
|
|
||||||
description = "A minimal DNS client library with support for A, AAAA, NS and SRV records"
|
|
||||||
sourceCompatibility = 1.7
|
|
||||||
version = 'git tag --points-at HEAD'.execute().text.trim()
|
|
||||||
|
|
||||||
ext {
|
|
||||||
isSNAPSHOT = 'git rev-parse --abbrev-ref HEAD'.execute().text.trim() == 'master'
|
|
||||||
}
|
|
||||||
|
|
||||||
if (isSNAPSHOT) {
|
|
||||||
version = version + '-SNAPSHOT'
|
|
||||||
}
|
|
||||||
|
|
||||||
repositories {
|
|
||||||
mavenLocal()
|
|
||||||
mavenCentral()
|
|
||||||
}
|
|
||||||
|
|
||||||
nexus {
|
|
||||||
attachSources = true
|
|
||||||
attachTests = false
|
|
||||||
attachJavadoc = true
|
|
||||||
sign = true
|
|
||||||
}
|
|
||||||
|
|
||||||
modifyPom {
|
|
||||||
project {
|
|
||||||
name 'minidns'
|
|
||||||
description 'Minimal DNS library for java and android systems'
|
|
||||||
url 'https://github.com/rtreffer/minidns'
|
|
||||||
inceptionYear '2014'
|
|
||||||
|
|
||||||
scm {
|
|
||||||
url 'https://github.com/rtreffer/minidns'
|
|
||||||
connection 'scm:https://github.com/rtreffer/minidns'
|
|
||||||
developerConnection 'scm:git://github.com/rtreffer/minidns.git'
|
|
||||||
}
|
|
||||||
|
|
||||||
licenses {
|
|
||||||
license {
|
|
||||||
name 'The Apache Software License, Version 2.0'
|
|
||||||
url 'http://www.apache.org/licenses/LICENSE-2.0.txt'
|
|
||||||
distribution 'repo'
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
developers {
|
|
||||||
developer {
|
|
||||||
id 'rtreffer'
|
|
||||||
name 'Rene Treffer'
|
|
||||||
email 'treffer@measite.de'
|
|
||||||
}
|
|
||||||
developer {
|
|
||||||
id 'flow'
|
|
||||||
name 'Florian Schmaus'
|
|
||||||
email 'flow@geekplace.eu'
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
dependencies {
|
|
||||||
}
|
|
||||||
|
|
@ -1,21 +0,0 @@
|
||||||
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
|
|
||||||
#
|
|
||||||
# GPG settings
|
|
||||||
#
|
|
||||||
|
|
||||||
# gpg key id
|
|
||||||
#signing.keyId=DEADBEEF
|
|
||||||
# the gpg key passphrase
|
|
||||||
#signing.password=correcthorsebatterystaple
|
|
||||||
# gpg keyring (this is the default gnupg keyring containing private keys)
|
|
||||||
#signing.secretKeyRingFile=/home/ubuntu/.gnupg/secring.gpg
|
|
||||||
|
|
||||||
# # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # # #
|
|
||||||
#
|
|
||||||
# nexus settings
|
|
||||||
#
|
|
||||||
|
|
||||||
# the nexus username used for log in
|
|
||||||
#nexusUsername=ubuntu
|
|
||||||
# the nexus password
|
|
||||||
#nexusPassword=correcthorsebatterystaple
|
|
||||||
|
|
@ -1,323 +0,0 @@
|
||||||
package de.measite.minidns;
|
|
||||||
|
|
||||||
import java.io.IOException;
|
|
||||||
import java.io.InputStream;
|
|
||||||
import java.io.InputStreamReader;
|
|
||||||
import java.io.LineNumberReader;
|
|
||||||
import java.lang.reflect.Method;
|
|
||||||
import java.net.DatagramPacket;
|
|
||||||
import java.net.DatagramSocket;
|
|
||||||
import java.net.InetAddress;
|
|
||||||
import java.security.NoSuchAlgorithmException;
|
|
||||||
import java.security.SecureRandom;
|
|
||||||
import java.util.ArrayList;
|
|
||||||
import java.util.Arrays;
|
|
||||||
import java.util.HashSet;
|
|
||||||
import java.util.Random;
|
|
||||||
import java.util.logging.Level;
|
|
||||||
import java.util.logging.Logger;
|
|
||||||
|
|
||||||
import de.measite.minidns.Record.CLASS;
|
|
||||||
import de.measite.minidns.Record.TYPE;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* A minimal DNS client for SRV/A/AAAA/NS and CNAME lookups, with IDN support.
|
|
||||||
* This circumvents the missing javax.naming package on android.
|
|
||||||
*/
|
|
||||||
public class Client {
|
|
||||||
|
|
||||||
private static final Logger LOGGER = Logger.getLogger(Client.class.getName());
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The internal random class for sequence generation.
|
|
||||||
*/
|
|
||||||
protected Random random;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The buffer size for dns replies.
|
|
||||||
*/
|
|
||||||
protected int bufferSize = 1500;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* DNS timeout.
|
|
||||||
*/
|
|
||||||
protected int timeout = 5000;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The internal DNS cache.
|
|
||||||
*/
|
|
||||||
protected DNSCache cache;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Create a new DNS client with the given DNS cache.
|
|
||||||
* @param cache The backend DNS cache.
|
|
||||||
*/
|
|
||||||
public Client(DNSCache cache) {
|
|
||||||
try {
|
|
||||||
random = SecureRandom.getInstance("SHA1PRNG");
|
|
||||||
} catch (NoSuchAlgorithmException e1) {
|
|
||||||
random = new SecureRandom();
|
|
||||||
}
|
|
||||||
this.cache = cache;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Create a new DNS client.
|
|
||||||
*/
|
|
||||||
public Client() {
|
|
||||||
this(null);
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Query a nameserver for a single entry.
|
|
||||||
* @param name The DNS name to request.
|
|
||||||
* @param type The DNS type to request (SRV, A, AAAA, ...).
|
|
||||||
* @param clazz The class of the request (usually IN for Internet).
|
|
||||||
* @param host The DNS server host.
|
|
||||||
* @param port The DNS server port.
|
|
||||||
* @return The response (or null on timeout / failure).
|
|
||||||
* @throws IOException On IO Errors.
|
|
||||||
*/
|
|
||||||
public DNSMessage query(String name, TYPE type, CLASS clazz, String host, int port)
|
|
||||||
throws IOException
|
|
||||||
{
|
|
||||||
Question q = new Question(name, type, clazz);
|
|
||||||
return query(q, host, port);
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Query a nameserver for a single entry.
|
|
||||||
* @param name The DNS name to request.
|
|
||||||
* @param type The DNS type to request (SRV, A, AAAA, ...).
|
|
||||||
* @param clazz The class of the request (usually IN for Internet).
|
|
||||||
* @param host The DNS server host.
|
|
||||||
* @return The response (or null on timeout / failure).
|
|
||||||
* @throws IOException On IO Errors.
|
|
||||||
*/
|
|
||||||
public DNSMessage query(String name, TYPE type, CLASS clazz, String host)
|
|
||||||
throws IOException
|
|
||||||
{
|
|
||||||
Question q = new Question(name, type, clazz);
|
|
||||||
return query(q, host);
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Query the system nameserver for a single entry.
|
|
||||||
* @param name The DNS name to request.
|
|
||||||
* @param type The DNS type to request (SRV, A, AAAA, ...).
|
|
||||||
* @param clazz The class of the request (usually IN for Internet).
|
|
||||||
* @return The response (or null on timeout/error).
|
|
||||||
* @return The DNSMessage reply or null.
|
|
||||||
*/
|
|
||||||
public DNSMessage query(String name, TYPE type, CLASS clazz)
|
|
||||||
{
|
|
||||||
Question q = new Question(name, type, clazz);
|
|
||||||
return query(q);
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Query a specific server for one entry.
|
|
||||||
* @param q The question section of the DNS query.
|
|
||||||
* @param host The dns server host.
|
|
||||||
* @return The response (or null on timeout/error).
|
|
||||||
* @throws IOException On IOErrors.
|
|
||||||
*/
|
|
||||||
public DNSMessage query(Question q, String host) throws IOException {
|
|
||||||
return query(q, host, 53);
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Query a specific server for one entry.
|
|
||||||
* @param q The question section of the DNS query.
|
|
||||||
* @param host The dns server host.
|
|
||||||
* @param port the dns port.
|
|
||||||
* @return The response (or null on timeout/error).
|
|
||||||
* @throws IOException On IOErrors.
|
|
||||||
*/
|
|
||||||
public DNSMessage query(Question q, String host, int port) throws IOException {
|
|
||||||
DNSMessage dnsMessage = (cache == null) ? null : cache.get(q);
|
|
||||||
if (dnsMessage != null) {
|
|
||||||
return dnsMessage;
|
|
||||||
}
|
|
||||||
DNSMessage message = new DNSMessage();
|
|
||||||
message.setQuestions(new Question[]{q});
|
|
||||||
message.setRecursionDesired(true);
|
|
||||||
message.setId(random.nextInt());
|
|
||||||
byte[] buf = message.toArray();
|
|
||||||
try (DatagramSocket socket = new DatagramSocket()) {
|
|
||||||
DatagramPacket packet = new DatagramPacket(buf, buf.length,
|
|
||||||
InetAddress.getByName(host), port);
|
|
||||||
socket.setSoTimeout(timeout);
|
|
||||||
socket.send(packet);
|
|
||||||
packet = new DatagramPacket(new byte[bufferSize], bufferSize);
|
|
||||||
socket.receive(packet);
|
|
||||||
dnsMessage = DNSMessage.parse(packet.getData());
|
|
||||||
if (dnsMessage.getId() != message.getId()) {
|
|
||||||
return null;
|
|
||||||
}
|
|
||||||
for (Record record : dnsMessage.getAnswers()) {
|
|
||||||
if (record.isAnswer(q)) {
|
|
||||||
if (cache != null) {
|
|
||||||
cache.put(q, dnsMessage);
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return dnsMessage;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Query the system DNS server for one entry.
|
|
||||||
* @param q The question section of the DNS query.
|
|
||||||
* @return The response (or null on timeout/error).
|
|
||||||
*/
|
|
||||||
public DNSMessage query(Question q) {
|
|
||||||
// While this query method does in fact re-use query(Question, String)
|
|
||||||
// we still do a cache lookup here in order to avoid unnecessary
|
|
||||||
// findDNS()calls, which are expensive on Android. Note that we do not
|
|
||||||
// put the results back into the Cache, as this is already done by
|
|
||||||
// query(Question, String).
|
|
||||||
DNSMessage message = cache.get(q);
|
|
||||||
if (message != null) {
|
|
||||||
return message;
|
|
||||||
}
|
|
||||||
String dnsServer[] = findDNS();
|
|
||||||
for (String dns : dnsServer) {
|
|
||||||
try {
|
|
||||||
message = query(q, dns);
|
|
||||||
if (message == null) {
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
if (message.getResponseCode() !=
|
|
||||||
DNSMessage.RESPONSE_CODE.NO_ERROR) {
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
for (Record record: message.getAnswers()) {
|
|
||||||
if (record.isAnswer(q)) {
|
|
||||||
return message;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
} catch (IOException ioe) {
|
|
||||||
LOGGER.log(Level.FINE, "IOException in query", ioe);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
return null;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve a list of currently configured DNS servers.
|
|
||||||
* @return The server array.
|
|
||||||
*/
|
|
||||||
public String[] findDNS() {
|
|
||||||
String[] result = findDNSByReflection();
|
|
||||||
if (result != null) {
|
|
||||||
LOGGER.fine("Got DNS servers via reflection: " + Arrays.toString(result));
|
|
||||||
return result;
|
|
||||||
}
|
|
||||||
|
|
||||||
result = findDNSByExec();
|
|
||||||
if (result != null) {
|
|
||||||
LOGGER.fine("Got DNS servers via exec: " + Arrays.toString(result));
|
|
||||||
return result;
|
|
||||||
}
|
|
||||||
|
|
||||||
// fallback for ipv4 and ipv6 connectivity
|
|
||||||
// see https://developers.google.com/speed/public-dns/docs/using
|
|
||||||
LOGGER.fine("No DNS found? Using fallback [8.8.8.8, [2001:4860:4860::8888]]");
|
|
||||||
|
|
||||||
return new String[]{"8.8.8.8", "[2001:4860:4860::8888]"};
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Try to retrieve the list of dns server by executing getprop.
|
|
||||||
* @return Array of servers, or null on failure.
|
|
||||||
*/
|
|
||||||
protected String[] findDNSByExec() {
|
|
||||||
try {
|
|
||||||
Process process = Runtime.getRuntime().exec("getprop");
|
|
||||||
InputStream inputStream = process.getInputStream();
|
|
||||||
LineNumberReader lnr = new LineNumberReader(
|
|
||||||
new InputStreamReader(inputStream));
|
|
||||||
String line = null;
|
|
||||||
HashSet<String> server = new HashSet<String>(6);
|
|
||||||
while ((line = lnr.readLine()) != null) {
|
|
||||||
int split = line.indexOf("]: [");
|
|
||||||
if (split == -1) {
|
|
||||||
continue;
|
|
||||||
}
|
|
||||||
String property = line.substring(1, split);
|
|
||||||
String value = line.substring(split + 4, line.length() - 1);
|
|
||||||
if (property.endsWith(".dns") || property.endsWith(".dns1") ||
|
|
||||||
property.endsWith(".dns2") || property.endsWith(".dns3") ||
|
|
||||||
property.endsWith(".dns4")) {
|
|
||||||
|
|
||||||
// normalize the address
|
|
||||||
|
|
||||||
InetAddress ip = InetAddress.getByName(value);
|
|
||||||
|
|
||||||
if (ip == null) continue;
|
|
||||||
|
|
||||||
value = ip.getHostAddress();
|
|
||||||
|
|
||||||
if (value == null) continue;
|
|
||||||
if (value.length() == 0) continue;
|
|
||||||
|
|
||||||
server.add(value);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
if (server.size() > 0) {
|
|
||||||
return server.toArray(new String[server.size()]);
|
|
||||||
}
|
|
||||||
} catch (IOException e) {
|
|
||||||
LOGGER.log(Level.WARNING, "Exception in findDNSByExec", e);
|
|
||||||
}
|
|
||||||
return null;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Try to retrieve the list of dns server by calling SystemProperties.
|
|
||||||
* @return Array of servers, or null on failure.
|
|
||||||
*/
|
|
||||||
protected String[] findDNSByReflection() {
|
|
||||||
try {
|
|
||||||
Class<?> SystemProperties =
|
|
||||||
Class.forName("android.os.SystemProperties");
|
|
||||||
Method method = SystemProperties.getMethod("get",
|
|
||||||
new Class[] { String.class });
|
|
||||||
|
|
||||||
ArrayList<String> servers = new ArrayList<String>(5);
|
|
||||||
|
|
||||||
for (String propKey : new String[] {
|
|
||||||
"net.dns1", "net.dns2", "net.dns3", "net.dns4"}) {
|
|
||||||
|
|
||||||
String value = (String)method.invoke(null, propKey);
|
|
||||||
|
|
||||||
if (value == null) continue;
|
|
||||||
if (value.length() == 0) continue;
|
|
||||||
if (servers.contains(value)) continue;
|
|
||||||
|
|
||||||
InetAddress ip = InetAddress.getByName(value);
|
|
||||||
|
|
||||||
if (ip == null) continue;
|
|
||||||
|
|
||||||
value = ip.getHostAddress();
|
|
||||||
|
|
||||||
if (value == null) continue;
|
|
||||||
if (value.length() == 0) continue;
|
|
||||||
if (servers.contains(value)) continue;
|
|
||||||
|
|
||||||
servers.add(value);
|
|
||||||
}
|
|
||||||
|
|
||||||
if (servers.size() > 0) {
|
|
||||||
return servers.toArray(new String[servers.size()]);
|
|
||||||
}
|
|
||||||
} catch (Exception e) {
|
|
||||||
// we might trigger some problems this way
|
|
||||||
LOGGER.log(Level.WARNING, "Exception in findDNSByReflection", e);
|
|
||||||
}
|
|
||||||
return null;
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
@ -1,23 +0,0 @@
|
||||||
package de.measite.minidns;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Cache for DNS Entries. Implementations must be thread safe.
|
|
||||||
*/
|
|
||||||
public interface DNSCache {
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Add an an dns answer/response for a given dns question. Implementations
|
|
||||||
* should honor the ttl / receive timestamp.
|
|
||||||
* @param q The question.
|
|
||||||
* @param message The dns message.
|
|
||||||
*/
|
|
||||||
void put(Question q, DNSMessage message);
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Request a cached dns response.
|
|
||||||
* @param q The dns question.
|
|
||||||
* @return The dns message.
|
|
||||||
*/
|
|
||||||
DNSMessage get(Question q);
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
@ -1,524 +0,0 @@
|
||||||
package de.measite.minidns;
|
|
||||||
|
|
||||||
import java.io.ByteArrayInputStream;
|
|
||||||
import java.io.ByteArrayOutputStream;
|
|
||||||
import java.io.DataInputStream;
|
|
||||||
import java.io.DataOutputStream;
|
|
||||||
import java.io.IOException;
|
|
||||||
import java.util.Arrays;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* A DNS message as defined by rfc1035. The message consists of a header and
|
|
||||||
* 4 sections: question, answer, nameserver and addition resource record
|
|
||||||
* section.
|
|
||||||
* A message can either be parsed ({@link DNSMessage#parse(byte[])}) or serialized
|
|
||||||
* ({@link DNSMessage#toArray()}).
|
|
||||||
*/
|
|
||||||
public class DNSMessage {
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Possible DNS reply codes.
|
|
||||||
*/
|
|
||||||
public static enum RESPONSE_CODE {
|
|
||||||
NO_ERROR(0), FORMAT_ERR(1), SERVER_FAIL(2), NX_DOMAIN(3),
|
|
||||||
NO_IMP(4), REFUSED(5), YXDOMAIN(6), YXRRSET(7),
|
|
||||||
NXRRSET(8), NOT_AUTH(9),NOT_ZONE(10);
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Reverse lookup table for response codes.
|
|
||||||
*/
|
|
||||||
private final static RESPONSE_CODE INVERSE_LUT[] = new RESPONSE_CODE[]{
|
|
||||||
NO_ERROR, FORMAT_ERR, SERVER_FAIL, NX_DOMAIN, NO_IMP,
|
|
||||||
REFUSED, YXDOMAIN, YXRRSET, NXRRSET, NOT_AUTH, NOT_ZONE,
|
|
||||||
null, null, null, null, null
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The response code value.
|
|
||||||
*/
|
|
||||||
private final byte value;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Create a new response code.
|
|
||||||
* @param value The response code value.
|
|
||||||
*/
|
|
||||||
private RESPONSE_CODE(int value) {
|
|
||||||
this.value = (byte)value;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the byte value of the response code.
|
|
||||||
* @return the response code.
|
|
||||||
*/
|
|
||||||
public byte getValue() {
|
|
||||||
return (byte) value;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the response code for a byte value.
|
|
||||||
* @param value The byte value.
|
|
||||||
* @return The symbolic response code or null.
|
|
||||||
* @throws IllegalArgumentException if the value is not in the range of
|
|
||||||
* 0..15.
|
|
||||||
*/
|
|
||||||
public static RESPONSE_CODE getResponseCode(int value) {
|
|
||||||
if (value < 0 || value > 15) {
|
|
||||||
throw new IllegalArgumentException();
|
|
||||||
}
|
|
||||||
return INVERSE_LUT[value];
|
|
||||||
}
|
|
||||||
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Symbolic DNS Opcode values.
|
|
||||||
*/
|
|
||||||
public static enum OPCODE {
|
|
||||||
QUERY(0),
|
|
||||||
INVERSE_QUERY(1),
|
|
||||||
STATUS(2),
|
|
||||||
NOTIFY(4),
|
|
||||||
UPDATE(5);
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Lookup table for for obcode reolution.
|
|
||||||
*/
|
|
||||||
private final static OPCODE INVERSE_LUT[] = new OPCODE[]{
|
|
||||||
QUERY, INVERSE_QUERY, STATUS, null, NOTIFY, UPDATE, null,
|
|
||||||
null, null, null, null, null, null, null, null
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The value of this opcode.
|
|
||||||
*/
|
|
||||||
private final byte value;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Create a new opcode for a given byte value.
|
|
||||||
* @param value The byte value of the opcode.
|
|
||||||
*/
|
|
||||||
private OPCODE(int value) {
|
|
||||||
this.value = (byte)value;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the byte value of this opcode.
|
|
||||||
* @return The byte value of this opcode.
|
|
||||||
*/
|
|
||||||
public byte getValue() {
|
|
||||||
return value;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the symbolic name of an opcode byte.
|
|
||||||
* @param value The byte value of the opcode.
|
|
||||||
* @return The symbolic opcode or null.
|
|
||||||
* @throws IllegalArgumentException If the byte value is not in the
|
|
||||||
* range 0..15.
|
|
||||||
*/
|
|
||||||
public static OPCODE getOpcode(int value) {
|
|
||||||
if (value < 0 || value > 15) {
|
|
||||||
throw new IllegalArgumentException();
|
|
||||||
}
|
|
||||||
return INVERSE_LUT[value];
|
|
||||||
}
|
|
||||||
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The DNS message id.
|
|
||||||
*/
|
|
||||||
protected int id;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The DNS message opcode.
|
|
||||||
*/
|
|
||||||
protected OPCODE opcode;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The response code of this dns message.
|
|
||||||
*/
|
|
||||||
protected RESPONSE_CODE responseCode;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* True if this is a query.
|
|
||||||
*/
|
|
||||||
protected boolean query;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* True if this is a authorative response.
|
|
||||||
*/
|
|
||||||
protected boolean authoritativeAnswer;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* True on truncate, tcp should be used.
|
|
||||||
*/
|
|
||||||
protected boolean truncated;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* True if the server should recurse.
|
|
||||||
*/
|
|
||||||
protected boolean recursionDesired;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* True if recursion is possible.
|
|
||||||
*/
|
|
||||||
protected boolean recursionAvailable;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* True if the server regarded the response as authentic.
|
|
||||||
*/
|
|
||||||
protected boolean authenticData;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* True if the server should not check the replies.
|
|
||||||
*/
|
|
||||||
protected boolean checkDisabled;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The question section content.
|
|
||||||
*/
|
|
||||||
protected Question questions[];
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The answers section content.
|
|
||||||
*/
|
|
||||||
protected Record answers[];
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The nameserver records.
|
|
||||||
*/
|
|
||||||
protected Record nameserverRecords[];
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Additional resousrce records.
|
|
||||||
*/
|
|
||||||
protected Record additionalResourceRecords[];
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The receive timestamp of this message.
|
|
||||||
*/
|
|
||||||
protected long receiveTimestamp;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the current DNS message id.
|
|
||||||
* @return The current DNS message id.
|
|
||||||
*/
|
|
||||||
public int getId() {
|
|
||||||
return id;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Set the current DNS message id.
|
|
||||||
* @param id The new DNS message id.
|
|
||||||
*/
|
|
||||||
public void setId(int id) {
|
|
||||||
this.id = id & 0xffff;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Get the receive timestamp if this message was created via parse.
|
|
||||||
* This should be used to evaluate TTLs.
|
|
||||||
* @return The receive timestamp in milliseconds.
|
|
||||||
*/
|
|
||||||
public long getReceiveTimestamp() {
|
|
||||||
return receiveTimestamp;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the query type (true or false;
|
|
||||||
* @return True if this DNS message is a query.
|
|
||||||
*/
|
|
||||||
public boolean isQuery() {
|
|
||||||
return query;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Set the query status of this message.
|
|
||||||
* @param query The new query status.
|
|
||||||
*/
|
|
||||||
public void setQuery(boolean query) {
|
|
||||||
this.query = query;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* True if the DNS message is an authoritative answer.
|
|
||||||
* @return True if this an authoritative DNS message.
|
|
||||||
*/
|
|
||||||
public boolean isAuthoritativeAnswer() {
|
|
||||||
return authoritativeAnswer;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Set the authoritative answer flag.
|
|
||||||
* @param authoritativeAnswer Tge new authoritative answer value.
|
|
||||||
*/
|
|
||||||
public void setAuthoritativeAnswer(boolean authoritativeAnswer) {
|
|
||||||
this.authoritativeAnswer = authoritativeAnswer;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the truncation status of this message. True means that the
|
|
||||||
* client should try a tcp lookup.
|
|
||||||
* @return True if this message was truncated.
|
|
||||||
*/
|
|
||||||
public boolean isTruncated() {
|
|
||||||
return truncated;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Set the truncation bit on this DNS message.
|
|
||||||
* @param truncated The new truncated bit status.
|
|
||||||
*/
|
|
||||||
public void setTruncated(boolean truncated) {
|
|
||||||
this.truncated = truncated;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Check if this message preferes recursion.
|
|
||||||
* @return True if recursion is desired.
|
|
||||||
*/
|
|
||||||
public boolean isRecursionDesired() {
|
|
||||||
return recursionDesired;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Set the recursion desired flag on this message.
|
|
||||||
* @param recursionDesired The new recusrion setting.
|
|
||||||
*/
|
|
||||||
public void setRecursionDesired(boolean recursionDesired) {
|
|
||||||
this.recursionDesired = recursionDesired;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the recursion available flag of this DNS message.
|
|
||||||
* @return The recursion available flag of this message.
|
|
||||||
*/
|
|
||||||
public boolean isRecursionAvailable() {
|
|
||||||
return recursionAvailable;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Set the recursion available flog from this DNS message.
|
|
||||||
* @param recursionAvailable The new recursion available status.
|
|
||||||
*/
|
|
||||||
public void setRecursionAvailable(boolean recursionAvailable) {
|
|
||||||
this.recursionAvailable = recursionAvailable;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the authentic data flag of this message.
|
|
||||||
* @return The authentic data flag.
|
|
||||||
*/
|
|
||||||
public boolean isAuthenticData() {
|
|
||||||
return authenticData;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Set the authentic data flag on this DNS message.
|
|
||||||
* @param authenticData The new authentic data flag value.
|
|
||||||
*/
|
|
||||||
public void setAuthenticData(boolean authenticData) {
|
|
||||||
this.authenticData = authenticData;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Check if checks are disabled.
|
|
||||||
* @return The status of the CheckDisabled flag.
|
|
||||||
*/
|
|
||||||
public boolean isCheckDisabled() {
|
|
||||||
return checkDisabled;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Change the check status of this packet.
|
|
||||||
* @param checkDisabled The new check disabled value.
|
|
||||||
*/
|
|
||||||
public void setCheckDisabled(boolean checkDisabled) {
|
|
||||||
this.checkDisabled = checkDisabled;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Generate a binary dns packet out of this message.
|
|
||||||
* @return byte[] the binary representation.
|
|
||||||
* @throws IOException Should never happen.
|
|
||||||
*/
|
|
||||||
public byte[] toArray() throws IOException {
|
|
||||||
ByteArrayOutputStream baos = new ByteArrayOutputStream(512);
|
|
||||||
DataOutputStream dos = new DataOutputStream(baos);
|
|
||||||
int header = 0;
|
|
||||||
if (query) {
|
|
||||||
header += 1 << 15;
|
|
||||||
}
|
|
||||||
if (opcode != null) {
|
|
||||||
header += opcode.getValue() << 11;
|
|
||||||
}
|
|
||||||
if (authoritativeAnswer) {
|
|
||||||
header += 1 << 10;
|
|
||||||
}
|
|
||||||
if (truncated) {
|
|
||||||
header += 1 << 9;
|
|
||||||
}
|
|
||||||
if (recursionDesired) {
|
|
||||||
header += 1 << 8;
|
|
||||||
}
|
|
||||||
if (recursionAvailable) {
|
|
||||||
header += 1 << 7;
|
|
||||||
}
|
|
||||||
if (authenticData) {
|
|
||||||
header += 1 << 5;
|
|
||||||
}
|
|
||||||
if (checkDisabled) {
|
|
||||||
header += 1 << 4;
|
|
||||||
}
|
|
||||||
if (responseCode != null) {
|
|
||||||
header += responseCode.getValue();
|
|
||||||
}
|
|
||||||
dos.writeShort((short)id);
|
|
||||||
dos.writeShort((short)header);
|
|
||||||
if (questions == null) {
|
|
||||||
dos.writeShort(0);
|
|
||||||
} else {
|
|
||||||
dos.writeShort((short)questions.length);
|
|
||||||
}
|
|
||||||
if (answers == null) {
|
|
||||||
dos.writeShort(0);
|
|
||||||
} else {
|
|
||||||
dos.writeShort((short)answers.length);
|
|
||||||
}
|
|
||||||
if (nameserverRecords == null) {
|
|
||||||
dos.writeShort(0);
|
|
||||||
} else {
|
|
||||||
dos.writeShort((short)nameserverRecords.length);
|
|
||||||
}
|
|
||||||
if (additionalResourceRecords == null) {
|
|
||||||
dos.writeShort(0);
|
|
||||||
} else {
|
|
||||||
dos.writeShort((short)additionalResourceRecords.length);
|
|
||||||
}
|
|
||||||
for (Question question: questions) {
|
|
||||||
dos.write(question.toByteArray());
|
|
||||||
}
|
|
||||||
dos.flush();
|
|
||||||
return baos.toByteArray();
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Build a DNS Message based on a binary DNS message.
|
|
||||||
* @param data The DNS message data.
|
|
||||||
* @return Parsed DNSMessage message.
|
|
||||||
* @throws IOException On read errors.
|
|
||||||
*/
|
|
||||||
public static DNSMessage parse(byte data[]) throws IOException {
|
|
||||||
ByteArrayInputStream bis = new ByteArrayInputStream(data);
|
|
||||||
DataInputStream dis = new DataInputStream(bis);
|
|
||||||
DNSMessage message = new DNSMessage();
|
|
||||||
message.id = dis.readUnsignedShort();
|
|
||||||
int header = dis.readUnsignedShort();
|
|
||||||
message.query = ((header >> 15) & 1) == 0;
|
|
||||||
message.opcode = OPCODE.getOpcode((header >> 11) & 0xf);
|
|
||||||
message.authoritativeAnswer = ((header >> 10) & 1) == 1;
|
|
||||||
message.truncated = ((header >> 9) & 1) == 1;
|
|
||||||
message.recursionDesired = ((header >> 8) & 1) == 1;
|
|
||||||
message.recursionAvailable = ((header >> 7) & 1) == 1;
|
|
||||||
message.authenticData = ((header >> 5) & 1) == 1;
|
|
||||||
message.checkDisabled = ((header >> 4) & 1) == 1;
|
|
||||||
message.responseCode = RESPONSE_CODE.getResponseCode(header & 0xf);
|
|
||||||
message.receiveTimestamp = System.currentTimeMillis();
|
|
||||||
int questionCount = dis.readUnsignedShort();
|
|
||||||
int answerCount = dis.readUnsignedShort();
|
|
||||||
int nameserverCount = dis.readUnsignedShort();
|
|
||||||
int additionalResourceRecordCount = dis.readUnsignedShort();
|
|
||||||
message.questions = new Question[questionCount];
|
|
||||||
while (questionCount-- > 0) {
|
|
||||||
Question q = Question.parse(dis, data);
|
|
||||||
message.questions[questionCount] = q;
|
|
||||||
}
|
|
||||||
message.answers = new Record[answerCount];
|
|
||||||
while (answerCount-- > 0) {
|
|
||||||
Record rr = new Record();
|
|
||||||
rr.parse(dis, data);
|
|
||||||
message.answers[answerCount] = rr;
|
|
||||||
}
|
|
||||||
message.nameserverRecords = new Record[nameserverCount];
|
|
||||||
while (nameserverCount-- > 0) {
|
|
||||||
Record rr = new Record();
|
|
||||||
rr.parse(dis, data);
|
|
||||||
message.nameserverRecords[nameserverCount] = rr;
|
|
||||||
}
|
|
||||||
message.additionalResourceRecords =
|
|
||||||
new Record[additionalResourceRecordCount];
|
|
||||||
while (additionalResourceRecordCount-- > 0) {
|
|
||||||
Record rr = new Record();
|
|
||||||
rr.parse(dis, data);
|
|
||||||
message.additionalResourceRecords[additionalResourceRecordCount] =
|
|
||||||
rr;
|
|
||||||
}
|
|
||||||
return message;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Set the question part of this message.
|
|
||||||
* @param questions The questions.
|
|
||||||
*/
|
|
||||||
public void setQuestions(Question ... questions) {
|
|
||||||
this.questions = questions;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the opcode of this message.
|
|
||||||
* @return The opcode of this message.
|
|
||||||
*/
|
|
||||||
public OPCODE getOpcode() {
|
|
||||||
return opcode;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the response code of this message.
|
|
||||||
* @return The response code.
|
|
||||||
*/
|
|
||||||
public RESPONSE_CODE getResponseCode() {
|
|
||||||
return responseCode;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the question section of this message.
|
|
||||||
* @return The DNS question section.
|
|
||||||
*/
|
|
||||||
public Question[] getQuestions() {
|
|
||||||
return questions;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the answer records of this DNS message.
|
|
||||||
* @return The answer section of this DNS message.
|
|
||||||
*/
|
|
||||||
public Record[] getAnswers() {
|
|
||||||
return answers;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the nameserver records of this DNS message.
|
|
||||||
* @return The nameserver section of this DNS message.
|
|
||||||
*/
|
|
||||||
public Record[] getNameserverRecords() {
|
|
||||||
return nameserverRecords;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the additional resource records attached to this DNS message.
|
|
||||||
* @return The additional resource record section of this DNS message.
|
|
||||||
*/
|
|
||||||
public Record[] getAdditionalResourceRecords() {
|
|
||||||
return additionalResourceRecords;
|
|
||||||
}
|
|
||||||
|
|
||||||
public String toString() {
|
|
||||||
return "-- DNSMessage " + id + " --\n" +
|
|
||||||
"Q" + Arrays.toString(questions) +
|
|
||||||
"NS" + Arrays.toString(nameserverRecords) +
|
|
||||||
"A" + Arrays.toString(answers) +
|
|
||||||
"ARR" + Arrays.toString(additionalResourceRecords);
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
@ -1,139 +0,0 @@
|
||||||
package de.measite.minidns;
|
|
||||||
|
|
||||||
import java.util.LinkedHashMap;
|
|
||||||
import java.util.Map.Entry;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* LRU based DNSCache backed by a LinkedHashMap.
|
|
||||||
*/
|
|
||||||
public class LRUCache implements DNSCache {
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Internal miss count.
|
|
||||||
*/
|
|
||||||
protected long missCount = 0l;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Internal expire count (subset of misses that was caused by expire).
|
|
||||||
*/
|
|
||||||
protected long expireCount = 0l;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Internal hit count.
|
|
||||||
*/
|
|
||||||
protected long hitCount = 0l;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The internal capacity of the backend cache.
|
|
||||||
*/
|
|
||||||
protected int capacity;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The upper bound of the ttl. All longer TTLs will be capped by this ttl.
|
|
||||||
*/
|
|
||||||
protected long maxTTL;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The backend cache.
|
|
||||||
*/
|
|
||||||
protected LinkedHashMap<Question, DNSMessage> backend;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Create a new LRUCache with given capacity and upper bound ttl.
|
|
||||||
* @param capacity The internal capacity.
|
|
||||||
* @param maxTTL The upper bound for any ttl.
|
|
||||||
*/
|
|
||||||
@SuppressWarnings("serial")
|
|
||||||
public LRUCache(final int capacity, final long maxTTL) {
|
|
||||||
this.capacity = capacity;
|
|
||||||
this.maxTTL = maxTTL;
|
|
||||||
backend = new LinkedHashMap<Question,DNSMessage>(
|
|
||||||
Math.min(capacity + (capacity + 3) / 4 + 2, 11), 0.75f, true)
|
|
||||||
{
|
|
||||||
@Override
|
|
||||||
protected boolean removeEldestEntry(
|
|
||||||
Entry<Question, DNSMessage> eldest) {
|
|
||||||
return size() > capacity;
|
|
||||||
}
|
|
||||||
};
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Create a new LRUCache with given capacity.
|
|
||||||
* @param capacity The capacity of this cache.
|
|
||||||
*/
|
|
||||||
public LRUCache(final int capacity) {
|
|
||||||
this(capacity, Long.MAX_VALUE);
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public synchronized void put(Question q, DNSMessage message) {
|
|
||||||
if (message.getReceiveTimestamp() <= 0l) {
|
|
||||||
return;
|
|
||||||
}
|
|
||||||
backend.put(q, message);
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public synchronized DNSMessage get(Question q) {
|
|
||||||
DNSMessage message = backend.get(q);
|
|
||||||
if (message == null) {
|
|
||||||
missCount++;
|
|
||||||
return null;
|
|
||||||
}
|
|
||||||
|
|
||||||
long ttl = maxTTL;
|
|
||||||
for (Record r : message.getAnswers()) {
|
|
||||||
ttl = Math.min(ttl, r.ttl);
|
|
||||||
}
|
|
||||||
for (Record r : message.getAdditionalResourceRecords()) {
|
|
||||||
ttl = Math.min(ttl, r.ttl);
|
|
||||||
}
|
|
||||||
if (message.getReceiveTimestamp() + ttl > System.currentTimeMillis()) {
|
|
||||||
missCount++;
|
|
||||||
expireCount++;
|
|
||||||
backend.remove(q);
|
|
||||||
return null;
|
|
||||||
} else {
|
|
||||||
hitCount++;
|
|
||||||
return message;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Clear all entries in this cache.
|
|
||||||
*/
|
|
||||||
public synchronized void clear() {
|
|
||||||
backend.clear();
|
|
||||||
missCount = 0l;
|
|
||||||
hitCount = 0l;
|
|
||||||
expireCount = 0l;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Get the miss count of this cache which is the number of fruitless
|
|
||||||
* get calls since this cache was last resetted.
|
|
||||||
* @return The number of cache misses.
|
|
||||||
*/
|
|
||||||
public long getMissCount() {
|
|
||||||
return missCount;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The number of expires (cache hits that have had a ttl to low to be
|
|
||||||
* retrieved).
|
|
||||||
* @return The expire count.
|
|
||||||
*/
|
|
||||||
public long getExpireCount() {
|
|
||||||
return expireCount;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The cache hit count (all sucessful calls to get).
|
|
||||||
* @return The hit count.
|
|
||||||
*/
|
|
||||||
public long getHitCount() {
|
|
||||||
return hitCount;
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
@ -1,158 +0,0 @@
|
||||||
package de.measite.minidns;
|
|
||||||
|
|
||||||
import java.io.ByteArrayOutputStream;
|
|
||||||
import java.io.DataInputStream;
|
|
||||||
import java.io.DataOutputStream;
|
|
||||||
import java.io.IOException;
|
|
||||||
import java.util.Arrays;
|
|
||||||
|
|
||||||
import de.measite.minidns.Record.CLASS;
|
|
||||||
import de.measite.minidns.Record.TYPE;
|
|
||||||
import de.measite.minidns.util.NameUtil;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* A DNS question (request).
|
|
||||||
*/
|
|
||||||
public class Question {
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The question string (e.g. "measite.de").
|
|
||||||
*/
|
|
||||||
private final String name;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The question type (e.g. A).
|
|
||||||
*/
|
|
||||||
private final TYPE type;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The question class (usually IN / internet).
|
|
||||||
*/
|
|
||||||
private final CLASS clazz;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* UnicastQueries have the highest bit of the CLASS field set to 1.
|
|
||||||
*/
|
|
||||||
private final boolean unicastQuery;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Cache for the serialized object.
|
|
||||||
*/
|
|
||||||
private byte[] byteArray;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Create a dns question for the given name/type/class.
|
|
||||||
* @param name The name e.g. "measite.de".
|
|
||||||
* @param type The type, e.g. A.
|
|
||||||
* @param clazz The class, usually IN (internet).
|
|
||||||
*/
|
|
||||||
public Question(String name, TYPE type, CLASS clazz, boolean unicastQuery) {
|
|
||||||
this.name = name;
|
|
||||||
this.type = type;
|
|
||||||
this.clazz = clazz;
|
|
||||||
this.unicastQuery = unicastQuery;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Create a dns question for the given name/type/class.
|
|
||||||
* @param name The name e.g. "measite.de".
|
|
||||||
* @param type The type, e.g. A.
|
|
||||||
* @param clazz The class, usually IN (internet).
|
|
||||||
*/
|
|
||||||
public Question(String name, TYPE type, CLASS clazz) {
|
|
||||||
this(name, type, clazz, false);
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Create a dns question for the given name/type/IN (internet class).
|
|
||||||
* @param name The name e.g. "measite.de".
|
|
||||||
* @param type The type, e.g. A.
|
|
||||||
*/
|
|
||||||
public Question(String name, TYPE type) {
|
|
||||||
this(name, type, CLASS.IN);
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the type of this question.
|
|
||||||
* @return The type.
|
|
||||||
*/
|
|
||||||
public TYPE getType() {
|
|
||||||
return type;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the class of this dns question (usually internet).
|
|
||||||
* @return The class of this dns question.
|
|
||||||
*/
|
|
||||||
public CLASS getClazz() {
|
|
||||||
return clazz;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the name of this dns question (e.g. "measite.de").
|
|
||||||
* @return The name of this dns question.
|
|
||||||
*/
|
|
||||||
public String getName() {
|
|
||||||
return name;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Parse a byte array and rebuild the dns question from it.
|
|
||||||
* @param dis The input stream.
|
|
||||||
* @param data The plain data (for dns name references).
|
|
||||||
* @return The parsed dns question.
|
|
||||||
* @throws IOException On errors (read outside of packet).
|
|
||||||
*/
|
|
||||||
public static Question parse(DataInputStream dis, byte[] data) throws IOException {
|
|
||||||
String name = NameUtil.parse(dis, data);
|
|
||||||
TYPE type = TYPE.getType(dis.readUnsignedShort());
|
|
||||||
CLASS clazz = CLASS.getClass(dis.readUnsignedShort());
|
|
||||||
return new Question (name, type, clazz);
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Generate a binary paket for this dns question.
|
|
||||||
* @return The dns question.
|
|
||||||
*/
|
|
||||||
public byte[] toByteArray() {
|
|
||||||
if (byteArray == null) {
|
|
||||||
ByteArrayOutputStream baos = new ByteArrayOutputStream(512);
|
|
||||||
DataOutputStream dos = new DataOutputStream(baos);
|
|
||||||
|
|
||||||
try {
|
|
||||||
dos.write(NameUtil.toByteArray(this.name));
|
|
||||||
dos.writeShort(type.getValue());
|
|
||||||
dos.writeShort(clazz.getValue() | (unicastQuery ? (1 << 15) : 0));
|
|
||||||
dos.flush();
|
|
||||||
} catch (IOException e) {
|
|
||||||
// Should never happen
|
|
||||||
throw new IllegalStateException(e);
|
|
||||||
}
|
|
||||||
byteArray = baos.toByteArray();
|
|
||||||
}
|
|
||||||
return byteArray;
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public int hashCode() {
|
|
||||||
return Arrays.hashCode(toByteArray());
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public boolean equals(Object other) {
|
|
||||||
if (this == other) {
|
|
||||||
return true;
|
|
||||||
}
|
|
||||||
if (!(other instanceof Question)) {
|
|
||||||
return false;
|
|
||||||
}
|
|
||||||
byte t[] = toByteArray();
|
|
||||||
byte o[] = ((Question)other).toByteArray();
|
|
||||||
return Arrays.equals(t, o);
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public String toString() {
|
|
||||||
return "Question/" + clazz + "/" + type + ": " + name;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
@ -1,343 +0,0 @@
|
||||||
package de.measite.minidns;
|
|
||||||
|
|
||||||
import java.io.DataInputStream;
|
|
||||||
import java.io.IOException;
|
|
||||||
import java.util.HashMap;
|
|
||||||
import java.util.logging.Level;
|
|
||||||
import java.util.logging.Logger;
|
|
||||||
|
|
||||||
import de.measite.minidns.record.A;
|
|
||||||
import de.measite.minidns.record.AAAA;
|
|
||||||
import de.measite.minidns.record.CNAME;
|
|
||||||
import de.measite.minidns.record.Data;
|
|
||||||
import de.measite.minidns.record.NS;
|
|
||||||
import de.measite.minidns.record.PTR;
|
|
||||||
import de.measite.minidns.record.SRV;
|
|
||||||
import de.measite.minidns.record.TXT;
|
|
||||||
import de.measite.minidns.util.NameUtil;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* A generic DNS record.
|
|
||||||
*/
|
|
||||||
public class Record {
|
|
||||||
|
|
||||||
private static final Logger LOGGER = Logger.getLogger(Client.class.getName());
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The record type.
|
|
||||||
* @see <a href="http://www.iana.org/assignments/dns-parameters">IANA DNS Parameters</a>
|
|
||||||
*/
|
|
||||||
public static enum TYPE {
|
|
||||||
A(1),
|
|
||||||
NS(2),
|
|
||||||
MD(3),
|
|
||||||
MF(4),
|
|
||||||
CNAME(5),
|
|
||||||
SOA(6),
|
|
||||||
MB(7),
|
|
||||||
MG(8),
|
|
||||||
MR(9),
|
|
||||||
NULL(10),
|
|
||||||
WKS(11),
|
|
||||||
PTR(12),
|
|
||||||
HINFO(13),
|
|
||||||
MINFO(14),
|
|
||||||
MX(15),
|
|
||||||
TXT(16),
|
|
||||||
RP(17),
|
|
||||||
AFSDB(18),
|
|
||||||
X25(19),
|
|
||||||
ISDN(20),
|
|
||||||
RT(21),
|
|
||||||
NSAP(22),
|
|
||||||
NSAP_PTR(23),
|
|
||||||
SIG(24),
|
|
||||||
KEY(25),
|
|
||||||
PX(26),
|
|
||||||
GPOS(27),
|
|
||||||
AAAA(28),
|
|
||||||
LOC(29),
|
|
||||||
NXT(30),
|
|
||||||
EID(31),
|
|
||||||
NIMLOC(32),
|
|
||||||
SRV(33),
|
|
||||||
ATMA(34),
|
|
||||||
NAPTR(35),
|
|
||||||
KX(36),
|
|
||||||
CERT(37),
|
|
||||||
A6(38),
|
|
||||||
DNAME(39),
|
|
||||||
SINK(40),
|
|
||||||
OPT(41),
|
|
||||||
APL(42),
|
|
||||||
DS(43),
|
|
||||||
SSHFP(44),
|
|
||||||
IPSECKEY(45),
|
|
||||||
RRSIG(46),
|
|
||||||
NSEC(47),
|
|
||||||
DNSKEY(48),
|
|
||||||
DHCID(49),
|
|
||||||
NSEC3(50),
|
|
||||||
NSEC3PARAM(51),
|
|
||||||
HIP(55),
|
|
||||||
NINFO(56),
|
|
||||||
RKEY(57),
|
|
||||||
TALINK(58),
|
|
||||||
SPF(99),
|
|
||||||
UINFO(100),
|
|
||||||
UID(101),
|
|
||||||
GID(102),
|
|
||||||
TKEY(249),
|
|
||||||
TSIG(250),
|
|
||||||
IXFR(251),
|
|
||||||
AXFR(252),
|
|
||||||
MAILB(253),
|
|
||||||
MAILA(254),
|
|
||||||
ANY(255),
|
|
||||||
TA(32768),
|
|
||||||
DLV(32769);
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The value of this DNS record type.
|
|
||||||
*/
|
|
||||||
private final int value;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Internal lookup table to map values to types.
|
|
||||||
*/
|
|
||||||
private final static HashMap<Integer, TYPE> INVERSE_LUT =
|
|
||||||
new HashMap<Integer, TYPE>();
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Initialize the reverse lookup table.
|
|
||||||
*/
|
|
||||||
static {
|
|
||||||
for(TYPE t: TYPE.values()) {
|
|
||||||
INVERSE_LUT.put(t.getValue(), t);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Create a new record type.
|
|
||||||
* @param value The binary value of this type.
|
|
||||||
*/
|
|
||||||
private TYPE(int value) {
|
|
||||||
this.value = value;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the binary value of this type.
|
|
||||||
* @return The binary value.
|
|
||||||
*/
|
|
||||||
public int getValue() {
|
|
||||||
return value;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the symbolic type of the binary value.
|
|
||||||
* @param value The binary type value.
|
|
||||||
* @return The symbolic tpye.
|
|
||||||
*/
|
|
||||||
public static TYPE getType(int value) {
|
|
||||||
return INVERSE_LUT.get(value);
|
|
||||||
}
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The symbolic class of a DNS record (usually IN for Internet).
|
|
||||||
*/
|
|
||||||
public static enum CLASS {
|
|
||||||
IN(1),
|
|
||||||
CH(3),
|
|
||||||
HS(4),
|
|
||||||
NONE(254),
|
|
||||||
ANY(255);
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Internal reverse lookup table to map binary class values to symbolic
|
|
||||||
* names.
|
|
||||||
*/
|
|
||||||
private final static HashMap<Integer, CLASS> INVERSE_LUT =
|
|
||||||
new HashMap<Integer, CLASS>();
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Initialize the interal reverse lookup table.
|
|
||||||
*/
|
|
||||||
static {
|
|
||||||
for(CLASS c: CLASS.values()) {
|
|
||||||
INVERSE_LUT.put(c.getValue(), c);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The binary value of this dns class.
|
|
||||||
*/
|
|
||||||
private final int value;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Create a new DNS class based on a binary value.
|
|
||||||
* @param value The binary value of this DNS class.
|
|
||||||
*/
|
|
||||||
private CLASS(int value) {
|
|
||||||
this.value = value;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the binary value of this DNS class.
|
|
||||||
* @return The binary value of this DNS class.
|
|
||||||
*/
|
|
||||||
public int getValue() {
|
|
||||||
return value;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the symbolic DNS class for a binary class value.
|
|
||||||
* @param value The binary DNS class value.
|
|
||||||
* @return The symbolic class instance.
|
|
||||||
*/
|
|
||||||
public static CLASS getClass(int value) {
|
|
||||||
return INVERSE_LUT.get(value);
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The generic name of this record.
|
|
||||||
*/
|
|
||||||
protected String name;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The type (and payload type) of this record.
|
|
||||||
*/
|
|
||||||
protected TYPE type;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The record class (usually CLASS.IN).
|
|
||||||
*/
|
|
||||||
protected CLASS clazz;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The ttl of this record.
|
|
||||||
*/
|
|
||||||
protected long ttl;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The payload object of this record.
|
|
||||||
*/
|
|
||||||
protected Data payloadData;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* MDNS defines the highest bit of the class as the unicast query bit.
|
|
||||||
*/
|
|
||||||
protected boolean unicastQuery;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Parse a given record based on the full message data and the current
|
|
||||||
* stream position.
|
|
||||||
* @param dis The DataInputStream positioned at the first record byte.
|
|
||||||
* @param data The full message data.
|
|
||||||
* @throws IOException In case of malformed replies.
|
|
||||||
*/
|
|
||||||
public void parse(DataInputStream dis, byte[] data) throws IOException {
|
|
||||||
this.name = NameUtil.parse(dis, data);
|
|
||||||
this.type = TYPE.getType(dis.readUnsignedShort());
|
|
||||||
int clazzValue = dis.readUnsignedShort();
|
|
||||||
this.clazz = CLASS.getClass(clazzValue & 0x7fff);
|
|
||||||
this.unicastQuery = (clazzValue & 0x8000) > 0;
|
|
||||||
if (this.clazz == null) {
|
|
||||||
LOGGER.log(Level.FINE, "Unknown class " + clazzValue);
|
|
||||||
}
|
|
||||||
this.ttl = (((long)dis.readUnsignedShort()) << 32) +
|
|
||||||
dis.readUnsignedShort();
|
|
||||||
int payloadLength = dis.readUnsignedShort();
|
|
||||||
switch (this.type) {
|
|
||||||
case SRV:
|
|
||||||
this.payloadData = new SRV();
|
|
||||||
break;
|
|
||||||
case AAAA:
|
|
||||||
this.payloadData = new AAAA();
|
|
||||||
break;
|
|
||||||
case A:
|
|
||||||
this.payloadData = new A();
|
|
||||||
break;
|
|
||||||
case NS:
|
|
||||||
this.payloadData = new NS();
|
|
||||||
break;
|
|
||||||
case CNAME:
|
|
||||||
this.payloadData = new CNAME();
|
|
||||||
break;
|
|
||||||
case PTR:
|
|
||||||
this.payloadData = new PTR();
|
|
||||||
break;
|
|
||||||
case TXT:
|
|
||||||
this.payloadData = new TXT();
|
|
||||||
break;
|
|
||||||
default:
|
|
||||||
LOGGER.log(Level.FINE, "Unparsed type " + type);
|
|
||||||
this.payloadData = null;
|
|
||||||
for (int i = 0; i < payloadLength; i++) {
|
|
||||||
dis.readByte();
|
|
||||||
}
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
if (this.payloadData != null) {
|
|
||||||
this.payloadData.parse(dis, data, payloadLength);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve a textual representation of this resource record.
|
|
||||||
* @return String
|
|
||||||
*/
|
|
||||||
@Override
|
|
||||||
public String toString() {
|
|
||||||
if (payloadData == null) {
|
|
||||||
return "RR " + type + "/" + clazz;
|
|
||||||
}
|
|
||||||
return "RR " + type + "/" + clazz + ": " + payloadData.toString();
|
|
||||||
};
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Check if this record answers a given query.
|
|
||||||
* @param q The query.
|
|
||||||
* @return True if this record is a valid answer.
|
|
||||||
*/
|
|
||||||
public boolean isAnswer(Question q) {
|
|
||||||
return ((q.getType() == type) || (q.getType() == TYPE.ANY)) &&
|
|
||||||
((q.getClazz() == clazz) || (q.getClazz() == CLASS.ANY)) &&
|
|
||||||
(q.getName().equals(name));
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* See if this query/response was a unicast query (highest class bit set).
|
|
||||||
* @return True if it is a unicast query/response record.
|
|
||||||
*/
|
|
||||||
public boolean isUnicastQuery() {
|
|
||||||
return unicastQuery;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The generic record name, e.g. "measite.de".
|
|
||||||
* @return The record name.
|
|
||||||
*/
|
|
||||||
public String getName() {
|
|
||||||
return name;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The payload data, usually a subclass of data (A, AAAA, CNAME, ...).
|
|
||||||
* @return The payload data.
|
|
||||||
*/
|
|
||||||
public Data getPayload() {
|
|
||||||
return payloadData;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the record ttl.
|
|
||||||
* @return The record ttl.
|
|
||||||
*/
|
|
||||||
public long getTtl() {
|
|
||||||
return ttl;
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
@ -1,43 +0,0 @@
|
||||||
package de.measite.minidns.record;
|
|
||||||
|
|
||||||
import java.io.DataInputStream;
|
|
||||||
import java.io.IOException;
|
|
||||||
|
|
||||||
import de.measite.minidns.Record.TYPE;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* A record payload (ip pointer).
|
|
||||||
*/
|
|
||||||
public class A implements Data {
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Target IP.
|
|
||||||
*/
|
|
||||||
private byte[] ip;
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public TYPE getType() {
|
|
||||||
return TYPE.A;
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public byte[] toByteArray() {
|
|
||||||
return ip;
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public void parse(DataInputStream dis, byte[] data, int length)
|
|
||||||
throws IOException {
|
|
||||||
ip = new byte[4];
|
|
||||||
dis.readFully(ip);
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public String toString() {
|
|
||||||
return Integer.toString(ip[0] & 0xff) + "." +
|
|
||||||
Integer.toString(ip[1] & 0xff) + "." +
|
|
||||||
Integer.toString(ip[2] & 0xff) + "." +
|
|
||||||
Integer.toString(ip[3] & 0xff);
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
@ -1,49 +0,0 @@
|
||||||
package de.measite.minidns.record;
|
|
||||||
|
|
||||||
import java.io.DataInputStream;
|
|
||||||
import java.io.IOException;
|
|
||||||
|
|
||||||
import de.measite.minidns.Record.TYPE;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* AAAA payload (an ipv6 pointer).
|
|
||||||
*/
|
|
||||||
public class AAAA implements Data {
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The ipv6 address.
|
|
||||||
*/
|
|
||||||
private byte[] ip;
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public TYPE getType() {
|
|
||||||
return TYPE.AAAA;
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public byte[] toByteArray() {
|
|
||||||
return ip;
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public void parse(DataInputStream dis, byte[] data, int length)
|
|
||||||
throws IOException {
|
|
||||||
ip = new byte[16];
|
|
||||||
dis.readFully(ip);
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public String toString() {
|
|
||||||
StringBuilder sb = new StringBuilder();
|
|
||||||
for (int i = 0; i < ip.length; i += 2) {
|
|
||||||
if (i != 0) {
|
|
||||||
sb.append(':');
|
|
||||||
}
|
|
||||||
sb.append(Integer.toHexString(
|
|
||||||
((ip[i] & 0xff) << 8) + (ip[i + 1] & 0xff)
|
|
||||||
));
|
|
||||||
}
|
|
||||||
return sb.toString();
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
@ -1,46 +0,0 @@
|
||||||
package de.measite.minidns.record;
|
|
||||||
|
|
||||||
import java.io.DataInputStream;
|
|
||||||
import java.io.IOException;
|
|
||||||
|
|
||||||
import de.measite.minidns.Record.TYPE;
|
|
||||||
import de.measite.minidns.util.NameUtil;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* CNAME payload (pointer to another domain / address).
|
|
||||||
*/
|
|
||||||
public class CNAME implements Data {
|
|
||||||
|
|
||||||
protected String name;
|
|
||||||
|
|
||||||
public String getName() {
|
|
||||||
return name;
|
|
||||||
}
|
|
||||||
|
|
||||||
public void setName(String name) {
|
|
||||||
this.name = name;
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public byte[] toByteArray() {
|
|
||||||
throw new UnsupportedOperationException("Not implemented yet");
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public void parse(DataInputStream dis, byte[] data, int length)
|
|
||||||
throws IOException
|
|
||||||
{
|
|
||||||
this.name = NameUtil.parse(dis, data);
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public TYPE getType() {
|
|
||||||
return TYPE.CNAME;
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public String toString() {
|
|
||||||
return "to \"" + name + "\"";
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
@ -1,34 +0,0 @@
|
||||||
package de.measite.minidns.record;
|
|
||||||
|
|
||||||
import java.io.DataInputStream;
|
|
||||||
import java.io.IOException;
|
|
||||||
|
|
||||||
import de.measite.minidns.Record.TYPE;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Generic payload class.
|
|
||||||
*/
|
|
||||||
public interface Data {
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The payload type.
|
|
||||||
* @return The payload type.
|
|
||||||
*/
|
|
||||||
TYPE getType();
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Binary representation of this payload.
|
|
||||||
* @return The binary representation of this payload.
|
|
||||||
*/
|
|
||||||
byte[] toByteArray();
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Parse this payload.
|
|
||||||
* @param dis The input stream.
|
|
||||||
* @param data The plain data (needed for name cross references).
|
|
||||||
* @param length The payload length.
|
|
||||||
* @throws IOException on io error (read past paket boundary).
|
|
||||||
*/
|
|
||||||
void parse(DataInputStream dis, byte data[], int length) throws IOException;
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
@ -1,15 +0,0 @@
|
||||||
package de.measite.minidns.record;
|
|
||||||
|
|
||||||
import de.measite.minidns.Record.TYPE;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Nameserver record.
|
|
||||||
*/
|
|
||||||
public class NS extends CNAME {
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public TYPE getType() {
|
|
||||||
return TYPE.NS;
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
@ -1,19 +0,0 @@
|
||||||
package de.measite.minidns.record;
|
|
||||||
|
|
||||||
import java.io.DataInputStream;
|
|
||||||
import java.io.IOException;
|
|
||||||
|
|
||||||
import de.measite.minidns.Record.TYPE;
|
|
||||||
import de.measite.minidns.util.NameUtil;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* A PTR record is handled like a CNAME
|
|
||||||
*/
|
|
||||||
public class PTR extends CNAME {
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public TYPE getType() {
|
|
||||||
return TYPE.PTR;
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
@ -1,124 +0,0 @@
|
||||||
package de.measite.minidns.record;
|
|
||||||
|
|
||||||
import java.io.DataInputStream;
|
|
||||||
import java.io.IOException;
|
|
||||||
|
|
||||||
import de.measite.minidns.Record.TYPE;
|
|
||||||
import de.measite.minidns.util.NameUtil;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* SRV record payload (service pointer).
|
|
||||||
*/
|
|
||||||
public class SRV implements Data {
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The priority of this service.
|
|
||||||
*/
|
|
||||||
protected int priority;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The weight of this service.
|
|
||||||
*/
|
|
||||||
protected int weight;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The target port.
|
|
||||||
*/
|
|
||||||
protected int port;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The target server.
|
|
||||||
*/
|
|
||||||
protected String name;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The priority of this service. Lower values mean higher priority.
|
|
||||||
* @return The priority.
|
|
||||||
*/
|
|
||||||
public int getPriority() {
|
|
||||||
return priority;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Set the priority of this service entry. Lower values have higher priority.
|
|
||||||
* @param priority The new priority.
|
|
||||||
*/
|
|
||||||
public void setPriority(int priority) {
|
|
||||||
this.priority = priority;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The weight of this service. Services with the same priority should be
|
|
||||||
* balanced based on weight.
|
|
||||||
* @return The weight of this service.
|
|
||||||
*/
|
|
||||||
public int getWeight() {
|
|
||||||
return weight;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Set the weight of this service.
|
|
||||||
* @param weight The new weight of this service.
|
|
||||||
*/
|
|
||||||
public void setWeight(int weight) {
|
|
||||||
this.weight = weight;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The target port of this service.
|
|
||||||
* @return The target port of this service.
|
|
||||||
*/
|
|
||||||
public int getPort() {
|
|
||||||
return port;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Set the target port of this service.
|
|
||||||
* @param port The new target port.
|
|
||||||
*/
|
|
||||||
public void setPort(int port) {
|
|
||||||
this.port = port;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* The name of the target server.
|
|
||||||
* @return The target servers name.
|
|
||||||
*/
|
|
||||||
public String getName() {
|
|
||||||
return name;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Set the name of the target server.
|
|
||||||
* @param name The new target servers name.
|
|
||||||
*/
|
|
||||||
public void setName(String name) {
|
|
||||||
this.name = name;
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public byte[] toByteArray() {
|
|
||||||
throw new UnsupportedOperationException("Not implemented yet");
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public void parse(DataInputStream dis, byte[] data, int length)
|
|
||||||
throws IOException
|
|
||||||
{
|
|
||||||
this.priority = dis.readUnsignedShort();
|
|
||||||
this.weight = dis.readUnsignedShort();
|
|
||||||
this.port = dis.readUnsignedShort();
|
|
||||||
this.name = NameUtil.parse(dis, data);
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public String toString() {
|
|
||||||
return "SRV " + name + ":" + port + " p:" + priority + " w:" + weight;
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public TYPE getType() {
|
|
||||||
return TYPE.SRV;
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
@ -1,65 +0,0 @@
|
||||||
package de.measite.minidns.record;
|
|
||||||
|
|
||||||
import java.io.DataInputStream;
|
|
||||||
import java.io.IOException;
|
|
||||||
|
|
||||||
import de.measite.minidns.Record.TYPE;
|
|
||||||
import de.measite.minidns.util.NameUtil;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* TXT record (actually a binary blob with wrappers for text content).
|
|
||||||
*/
|
|
||||||
public class TXT implements Data {
|
|
||||||
|
|
||||||
protected byte[] blob;
|
|
||||||
|
|
||||||
public byte[] getBlob() {
|
|
||||||
return blob;
|
|
||||||
}
|
|
||||||
|
|
||||||
public void setBlob(byte[] blob) {
|
|
||||||
this.blob = blob;
|
|
||||||
}
|
|
||||||
|
|
||||||
public String getText() {
|
|
||||||
try {
|
|
||||||
return (new String(blob, "UTF-8")).intern();
|
|
||||||
} catch (Exception e) {
|
|
||||||
/* Can't happen for UTF-8 unless it's really a blob */
|
|
||||||
return null;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
public void setText(String text) {
|
|
||||||
try {
|
|
||||||
this.blob = text.getBytes("UTF-8");
|
|
||||||
} catch (Exception e) {
|
|
||||||
/* Can't happen, UTF-8 IS supported */
|
|
||||||
throw new RuntimeException("UTF-8 not supported", e);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public byte[] toByteArray() {
|
|
||||||
throw new UnsupportedOperationException("Not implemented yet");
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public void parse(DataInputStream dis, byte[] data, int length)
|
|
||||||
throws IOException
|
|
||||||
{
|
|
||||||
blob = new byte[length];
|
|
||||||
dis.readFully(blob);
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public TYPE getType() {
|
|
||||||
return TYPE.TXT;
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public String toString() {
|
|
||||||
return "\"" + getText() + "\"";
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
@ -1,129 +0,0 @@
|
||||||
package de.measite.minidns.util;
|
|
||||||
|
|
||||||
import java.io.ByteArrayOutputStream;
|
|
||||||
import java.io.DataInputStream;
|
|
||||||
import java.io.DataOutputStream;
|
|
||||||
import java.io.IOException;
|
|
||||||
import java.net.IDN;
|
|
||||||
import java.util.HashSet;
|
|
||||||
import java.util.Arrays;
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Utilities related to internationalized domain names and dns name handling.
|
|
||||||
*/
|
|
||||||
public class NameUtil {
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Retrieve the rough binary length of a string
|
|
||||||
* (length + 2 bytes length prefix).
|
|
||||||
* @param name The name string.
|
|
||||||
* @return The binary size of the string (length + 2).
|
|
||||||
*/
|
|
||||||
public static int size(String name) {
|
|
||||||
return name.length() + 2;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Check if two internationalized domain names are equal, possibly causing
|
|
||||||
* a serialization of both domain names.
|
|
||||||
* @param name1 The first domain name.
|
|
||||||
* @param name2 The second domain name.
|
|
||||||
* @return True if both domain names are the same.
|
|
||||||
*/
|
|
||||||
public static boolean idnEquals(String name1, String name2) {
|
|
||||||
if (name1 == name2) return true; // catches null, null
|
|
||||||
if (name1 == null) return false;
|
|
||||||
if (name2 == null) return false;
|
|
||||||
if (name1.equals(name2)) return true;
|
|
||||||
|
|
||||||
try {
|
|
||||||
return Arrays.equals(toByteArray(name1),toByteArray(name2));
|
|
||||||
} catch (IOException e) {
|
|
||||||
return false; // impossible
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Serialize a domain name under IDN rules.
|
|
||||||
* @param name The domain name.
|
|
||||||
* @return The binary domain name representation.
|
|
||||||
* @throws IOException Should never happen.
|
|
||||||
*/
|
|
||||||
public static byte[] toByteArray(String name) throws IOException {
|
|
||||||
ByteArrayOutputStream baos = new ByteArrayOutputStream(64);
|
|
||||||
DataOutputStream dos = new DataOutputStream(baos);
|
|
||||||
for (String s: name.split("[.\u3002\uFF0E\uFF61]")) {
|
|
||||||
byte[] buffer = IDN.toASCII(s).getBytes();
|
|
||||||
dos.writeByte(buffer.length);
|
|
||||||
dos.write(buffer);
|
|
||||||
}
|
|
||||||
dos.writeByte(0);
|
|
||||||
dos.flush();
|
|
||||||
return baos.toByteArray();
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Parse a domain name starting at the current offset and moving the input
|
|
||||||
* stream pointer past this domain name (even if cross references occure).
|
|
||||||
* @param dis The input stream.
|
|
||||||
* @param data The raw data (for cross references).
|
|
||||||
* @return The domain name string.
|
|
||||||
* @throws IOException Should never happen.
|
|
||||||
*/
|
|
||||||
public static String parse(DataInputStream dis, byte data[])
|
|
||||||
throws IOException
|
|
||||||
{
|
|
||||||
int c = dis.readUnsignedByte();
|
|
||||||
if ((c & 0xc0) == 0xc0) {
|
|
||||||
c = ((c & 0x3f) << 8) + dis.readUnsignedByte();
|
|
||||||
HashSet<Integer> jumps = new HashSet<Integer>();
|
|
||||||
jumps.add(c);
|
|
||||||
return parse(data, c, jumps);
|
|
||||||
}
|
|
||||||
if (c == 0) {
|
|
||||||
return "";
|
|
||||||
}
|
|
||||||
byte b[] = new byte[c];
|
|
||||||
dis.readFully(b);
|
|
||||||
String s = IDN.toUnicode(new String(b));
|
|
||||||
String t = parse(dis, data);
|
|
||||||
if (t.length() > 0) {
|
|
||||||
s = s + "." + t;
|
|
||||||
}
|
|
||||||
return s;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Parse a domain name starting at the given offset.
|
|
||||||
* @param data The raw data.
|
|
||||||
* @param offset The offset.
|
|
||||||
* @param jumps The list of jumps (by now).
|
|
||||||
* @return The parsed domain name.
|
|
||||||
* @throws IllegalStateException on cycles.
|
|
||||||
*/
|
|
||||||
public static String parse(
|
|
||||||
byte data[],
|
|
||||||
int offset,
|
|
||||||
HashSet<Integer> jumps
|
|
||||||
) {
|
|
||||||
int c = data[offset] & 0xff;
|
|
||||||
if ((c & 0xc0) == 0xc0) {
|
|
||||||
c = ((c & 0x3f) << 8) + (data[offset + 1] & 0xff);
|
|
||||||
if (jumps.contains(c)) {
|
|
||||||
throw new IllegalStateException("Cyclic offsets detected.");
|
|
||||||
}
|
|
||||||
jumps.add(c);
|
|
||||||
return parse(data, c, jumps);
|
|
||||||
}
|
|
||||||
if (c == 0) {
|
|
||||||
return "";
|
|
||||||
}
|
|
||||||
String s = new String(data,offset + 1, c);
|
|
||||||
String t = parse(data, offset + 1 + c, jumps);
|
|
||||||
if (t.length() > 0) {
|
|
||||||
s = s + "." + t;
|
|
||||||
}
|
|
||||||
return s;
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
Loading…
Reference in New Issue