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Java client for the AOServ Platform.
/*
* aoserv-client - Java client for the AOServ platform.
* Copyright (C) 2001-2013, 2014, 2016 AO Industries, Inc.
* [email protected]
* 7262 Bull Pen Cir
* Mobile, AL 36695
*
* This file is part of aoserv-client.
*
* aoserv-client 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 3 of the License, or
* (at your option) any later version.
*
* aoserv-client 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 aoserv-client. If not, see DNSZone is one domain hosted in the name servers. It can have
* any number of DNSRecords. Please see DNSTLD for
* domain restrictions.
*
* @see DNSTLD
* @see DNSRecord
*
* @author AO Industries, Inc.
*/
final public class DNSZone extends CachedObjectStringKey implements Removable, Dumpable {
static final int
COLUMN_ZONE=0,
COLUMN_PACKAGE=2
;
static final String COLUMN_ZONE_name= "zone";
public static final int DEFAULT_TTL = 43200;
/**
* The maximum number of characters allowed in a line.
*/
public static final int MAX_LINE_LENGTH = 255;
/**
* The zone that is in charge of the API.
*/
public static final String API_ZONE="aoindustries.com.";
/**
* The hostmaster that is placed in a newly created DNSZone.
*/
public static final String DEFAULT_HOSTMASTER="hostmaster."+API_ZONE;
/**
* The default priority for new MX records.
*/
public static final int DEFAULT_MX_PRIORITY = 10;
private String file;
String packageName;
private String hostmaster;
private long serial;
private int ttl;
public int addDNSRecord(
String domain,
DNSType type,
int priority,
int weight,
int port,
String destination,
int ttl
) throws IOException, SQLException {
return table.connector.getDnsRecords().addDNSRecord(this, domain, type, priority, weight, port, destination, ttl);
}
@Override
public void dump(PrintWriter out) throws SQLException, IOException {
printZoneFile(out);
}
public DNSType[] getAllowedDNSTypes() throws IOException, SQLException {
DNSTypeTable tt=table.connector.getDnsTypes();
if(isArpa()) {
DNSType[] types={
tt.get(DNSType.NS),
tt.get(DNSType.PTR)
};
return types;
} else {
DNSType[] types={
tt.get(DNSType.A),
tt.get(DNSType.AAAA),
tt.get(DNSType.CNAME),
tt.get(DNSType.MX),
tt.get(DNSType.NS),
tt.get(DNSType.SRV),
tt.get(DNSType.TXT)
};
return types;
}
}
public static String getArpaZoneForIPAddress(String ip, String netmask) throws IllegalArgumentException {
if(!IPAddress.isValidIPAddress(ip)) throw new IllegalArgumentException("Invalid IP address: "+ip);
if(netmask.equals("255.255.255.0")) {
int pos = ip.indexOf('.');
int oct1 = Integer.parseInt(ip.substring(0, pos));
int pos2 = ip.indexOf('.', pos+1);
int oct2 = Integer.parseInt(ip.substring(pos+1, pos2));
pos = ip.indexOf('.', pos2+1);
int oct3 = Integer.parseInt(ip.substring(pos2+1, pos));
return oct3+"."+oct2+"."+oct1+".in-addr.arpa";
} else if(netmask.equals("255.255.255.128")) {
// Hurricane Electric compatible
int pos = ip.indexOf('.');
int oct1 = Integer.parseInt(ip.substring(0, pos));
int pos2 = ip.indexOf('.', pos+1);
int oct2 = Integer.parseInt(ip.substring(pos+1, pos2));
pos = ip.indexOf('.', pos2+1);
int oct3 = Integer.parseInt(ip.substring(pos2+1, pos));
int oct4 = Integer.parseInt(ip.substring(pos+1));
return "subnet"+(oct4&128)+"."+oct3+"."+oct2+"."+oct1+".in-addr.arpa";
} else throw new IllegalArgumentException("Unsupported netmask: "+netmask);
}
@Override
Object getColumnImpl(int i) {
switch(i) {
case COLUMN_ZONE: return pkey;
case 1: return file;
case COLUMN_PACKAGE: return packageName;
case 3: return hostmaster;
case 4: return serial;
case 5: return ttl;
default: throw new IllegalArgumentException("Invalid index: "+i);
}
}
public static long getCurrentSerial() {
Calendar cal=Calendar.getInstance();
return
cal.get(Calendar.YEAR)*1000000L
+ (cal.get(Calendar.MONTH)+1)*10000
+ cal.get(Calendar.DATE)*100
+ 01
;
}
public List getDNSRecords() throws IOException, SQLException {
return table.connector.getDnsRecords().getDNSRecords(this);
}
public List getDNSRecords(String domain, DNSType type) throws IOException, SQLException {
return table.connector.getDnsRecords().getDNSRecords(this, domain, type);
}
public String getFile() {
return file;
}
public String getHostmaster() {
return hostmaster;
}
public Package getPackage() throws SQLException, IOException {
Package obj=table.connector.getPackages().get(packageName);
if(obj==null) throw new SQLException("Unable to find Package: "+packageName);
return obj;
}
public long getSerial() {
return serial;
}
public int getTTL() {
return ttl;
}
@Override
public SchemaTable.TableID getTableID() {
return SchemaTable.TableID.DNS_ZONES;
}
public String getZone() {
return pkey;
}
public String getZoneFile() throws SQLException, IOException {
ByteArrayOutputStream bout=new ByteArrayOutputStream();
PrintWriter out=new PrintWriter(bout);
printZoneFile(out);
out.flush();
return new String(bout.toByteArray());
}
@Override
public void init(ResultSet result) throws SQLException {
pkey=result.getString(1);
file=result.getString(2);
packageName=result.getString(3);
hostmaster=result.getString(4);
serial=result.getLong(5);
ttl=result.getInt(6);
}
public boolean isArpa() {
return pkey.length()>13 && pkey.substring(pkey.length()-13).equals(".in-addr.arpa");
}
/**
* Checks that the line is not too long, prints the line, and clears the buffer.
*/
private static void printLine(StringBuilder line, PrintWriter out) {
if(line.length()>MAX_LINE_LENGTH) throw new IllegalStateException("Line too long: "+line);
out.print(line);
out.print('\n');
line.setLength(0);
}
private static void printRecord(String linePrefix, StringBuilder line, PrintWriter out, String domain, int ttl, int recordTtl, String type, int priority, int weight, int port, String destination) {
line.append(linePrefix);
line.append(domain);
int count=Math.max(1, 24-domain.length());
for(int d=0;d= (char)0x7f from the destination
line.append('"');
for(int d=0, dlen=destination.length(); d=' '
&& ch<(char)0x7f
) line.append(ch);
}
line.append('"');
printLine(line, out);
} else {
// Begin parenthesis
line.append('(');
printLine(line, out);
// Double-quote TXT types and filter " and anything < (space) or >= (char)0x7f from the destination
final int charsPerLine = MAX_LINE_LENGTH-(linePrefix.length()+2);
for(int lineStart=0; lineStart=' '
&& ch<(char)0x7f
) line.append(ch);
}
line.append('"');
printLine(line, out);
}
// End parenthesis
line.append(linePrefix);
line.append(')');
printLine(line, out);
}
} else {
line.append(destination);
printLine(line, out);
}
}
public void printZoneFile(PrintWriter out) throws SQLException, IOException {
StringBuilder line = new StringBuilder(); // Buffers each line to ensure not too long
List records=getDNSRecords();
line.append("$TTL ").append(ttl);
printLine(line, out);
if(!isArpa()) {
line.append("$ORIGIN ").append(pkey);
printLine(line, out);
}
line.append("@ ").append(ttl).append(" IN SOA ");
// Find the first nameserver
DNSRecord firstNS=null;
for(DNSRecord record : records) {
if(record.getType().getType().equals(DNSType.NS)) {
firstNS=record;
break;
}
}
line.append(firstNS==null ? "ns1.aoindustries.com." : firstNS.getDestination());
line.append(" ").append(hostmaster).append(" (");
printLine(line, out);
line.append(" ").append(serial).append(" ; serial");
printLine(line, out);
line.append(" 3600 ; refresh");
printLine(line, out);
line.append(" 600 ; retry");
printLine(line, out);
line.append(" 1814400 ; expiry");
printLine(line, out);
line.append(" 300 ; minimum");
printLine(line, out);
line.append(" )");
printLine(line, out);
if(firstNS==null) {
// Add the default nameservers because named will refuse to start without them
line.append("; No name servers configured, using the defaults");
printLine(line, out);
printRecord("", line, out, "@", ttl, DNSRecord.NO_TTL, DNSType.NS, DNSRecord.NO_PRIORITY, DNSRecord.NO_WEIGHT, DNSRecord.NO_PORT, "ns1.aoindustries.com.");
printRecord("", line, out, "@", ttl, DNSRecord.NO_TTL, DNSType.NS, DNSRecord.NO_PRIORITY, DNSRecord.NO_WEIGHT, DNSRecord.NO_PORT, "ns2.aoindustries.com.");
printRecord("", line, out, "@", ttl, DNSRecord.NO_TTL, DNSType.NS, DNSRecord.NO_PRIORITY, DNSRecord.NO_WEIGHT, DNSRecord.NO_PORT, "ns3.aoindustries.com.");
printRecord("", line, out, "@", ttl, DNSRecord.NO_TTL, DNSType.NS, DNSRecord.NO_PRIORITY, DNSRecord.NO_WEIGHT, DNSRecord.NO_PORT, "ns4.aoindustries.com.");
}
int len=records.size();
for(int c=0;c getCannotRemoveReasons() {
List reasons=new ArrayList<>();
if(pkey.equals(API_ZONE)) reasons.add(new CannotRemoveReason("Not allowed to remove the API Zone: "+API_ZONE));
return reasons;
}
@Override
public void remove() throws IOException, SQLException {
table.connector.requestUpdateIL(true, AOServProtocol.CommandID.REMOVE, SchemaTable.TableID.DNS_ZONES, pkey);
}
public void setTTL(int ttl) throws IOException, SQLException {
table.connector.requestUpdateIL(true, AOServProtocol.CommandID.SET_DNS_ZONE_TTL, pkey, ttl);
this.ttl=ttl;
}
@Override
public void write(CompressedDataOutputStream out, AOServProtocol.Version version) throws IOException {
out.writeUTF(pkey);
out.writeUTF(file);
out.writeUTF(packageName);
out.writeUTF(hostmaster);
out.writeLong(serial);
if(version.compareTo(AOServProtocol.Version.VERSION_1_0_A_127)>=0) out.writeCompressedInt(ttl);
}
}
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