/**
* Looks up Records in the Zone. This follows CNAMEs and wildcards.
*
* @param name The name to look up
* @param type The type to look up
* @return A SetResponse object
* @see SetResponse
*/
public SetResponse findRecords(Name name, short type) {
SetResponse zr = null;
Object o = findSets(name, type);
if (o == null) {
/* The name does not exist */
if (name.isWild()) return SetResponse.ofType(SetResponse.NXDOMAIN);
int labels = name.labels() - origin.labels();
if (labels == 0) return SetResponse.ofType(SetResponse.NXDOMAIN);
if (hasWild) {
SetResponse sr;
Name tname = name;
do {
sr = findRecords(tname.wild(1), type);
if (!sr.isNXDOMAIN()) return sr;
tname = new Name(tname, 1);
} while (labels-- >= 1);
return sr;
} else return SetResponse.ofType(SetResponse.NXDOMAIN);
}
if (o instanceof TypeMap) {
/* The name exists but the type does not. */
return SetResponse.ofType(SetResponse.NXRRSET);
}
Object[] objects;
RRset rrset;
if (o instanceof RRset) {
objects = null;
rrset = (RRset) o;
} else {
objects = (Object[]) o;
rrset = (RRset) objects[0];
}
if (name.equals(rrset.getName())) {
if (type != Type.CNAME && type != Type.ANY && rrset.getType() == Type.CNAME)
zr = new SetResponse(SetResponse.CNAME, rrset);
else if (rrset.getType() == Type.NS && !name.equals(origin))
zr = new SetResponse(SetResponse.DELEGATION, rrset);
else {
zr = new SetResponse(SetResponse.SUCCESSFUL);
zr.addRRset(rrset);
if (objects != null) {
for (int i = 1; i < objects.length; i++) zr.addRRset((RRset) objects[i]);
}
}
} else {
if (rrset.getType() == Type.CNAME) return SetResponse.ofType(SetResponse.NXDOMAIN);
else if (rrset.getType() == Type.DNAME) {
zr = new SetResponse(SetResponse.DNAME, rrset);
} else if (rrset.getType() == Type.NS) {
zr = new SetResponse(SetResponse.DELEGATION, rrset);
}
}
return zr;
}
/** Parses the output of winipcfg or ipconfig. */
private static void findWin(InputStream in) {
BufferedReader br = new BufferedReader(new InputStreamReader(in));
try {
List lserver = new ArrayList();
List lsearch = new ArrayList();
String line = null;
boolean readingServers = false;
boolean readingSearches = false;
while ((line = br.readLine()) != null) {
StringTokenizer st = new StringTokenizer(line);
if (!st.hasMoreTokens()) {
readingServers = false;
readingSearches = false;
continue;
}
String s = st.nextToken();
if (line.indexOf(":") != -1) {
readingServers = false;
readingSearches = false;
}
if (line.indexOf("Host Name") != -1) {
while (st.hasMoreTokens()) s = st.nextToken();
Name name;
try {
name = Name.fromString(s, null);
} catch (TextParseException e) {
continue;
}
if (name.labels() == 1) continue;
addSearch(s, lsearch);
} else if (line.indexOf("Primary Dns Suffix") != -1) {
while (st.hasMoreTokens()) s = st.nextToken();
if (s.equals(":")) continue;
addSearch(s, lsearch);
readingSearches = true;
} else if (readingSearches || line.indexOf("DNS Suffix") != -1) {
while (st.hasMoreTokens()) s = st.nextToken();
if (s.equals(":")) continue;
addSearch(s, lsearch);
readingSearches = true;
} else if (readingServers || line.indexOf("DNS Servers") != -1) {
while (st.hasMoreTokens()) s = st.nextToken();
if (s.equals(":")) continue;
addServer(s, lserver);
readingServers = true;
}
}
if (servers == null && lserver.size() > 0)
servers = (String[]) lserver.toArray(new String[lserver.size()]);
} catch (IOException e) {
} finally {
try {
br.close();
} catch (IOException e) {
}
}
return;
}
public SIGBase(
Name name,
int type,
int dclass,
long ttl,
int covered,
int alg,
long origttl,
Date expire,
Date timeSigned,
int footprint,
Name signer,
byte[] signature) {
super(name, type, dclass, ttl);
Type.check(covered);
checkU8("alg", alg);
checkU8("labels", labels);
TTL.check(origttl);
checkU16("footprint", footprint);
this.covered = covered;
this.alg = alg;
this.labels = name.labels();
this.origttl = origttl;
this.expire = expire;
this.timeSigned = timeSigned;
this.footprint = footprint;
if (!signer.isAbsolute()) throw new RelativeNameException(signer);
this.signer = signer;
this.signature = signature;
}
/**
* Creates an array containing fields of the SIG record and the RRsets to be signed/verified.
*
* @param sig The SIG record used to sign/verify the rrset.
* @param rrset The data to be signed/verified.
* @return The data to be cryptographically signed or verified.
*/
public static byte[] digestRRset(SIGRecord sig, RRset rrset) {
DataByteOutputStream out = new DataByteOutputStream();
digestSIG(out, sig);
int size = rrset.size();
byte[][] records = new byte[size][];
Iterator it = rrset.rrs();
Name name = rrset.getName();
Name wild = null;
if (name.labels() > sig.getLabels()) wild = name.wild(name.labels() - sig.getLabels());
while (it.hasNext()) {
Record rec = (Record) it.next();
if (wild != null) rec = rec.withName(wild);
records[--size] = rec.toWireCanonical();
}
Arrays.sort(records);
for (int i = 0; i < records.length; i++) out.writeArray(records[i]);
return out.toByteArray();
}
/**
* Creates an SIG Record from the given data
*
* @param covered The RRset type covered by this signature
* @param alg The cryptographic algorithm of the key that generated the signature
* @param origttl The original TTL of the RRset
* @param expire The time at which the signature expires
* @param timeSigned The time at which this signature was generated
* @param footprint The footprint/key id of the signing key.
* @param signer The owner of the signing key
* @param signature Binary data representing the signature
*/
public SIGRecord(
Name name,
short dclass,
int ttl,
int covered,
int alg,
int origttl,
Date expire,
Date timeSigned,
int footprint,
Name signer,
byte[] signature) {
this(name, dclass, ttl);
this.covered = (short) covered;
this.alg = (byte) alg;
this.labels = name.labels();
this.origttl = origttl;
this.expire = expire;
this.timeSigned = timeSigned;
this.footprint = (short) footprint;
this.signer = signer;
this.signature = signature;
}
/** Finds all matching sets or something that causes the lookup to stop. */
protected Object findSets(Name name, short type) {
Object bestns = null;
Object o;
Name tname;
int labels;
int olabels;
int tlabels;
if (!name.subdomain(origin)) return null;
labels = name.labels();
olabels = origin.labels();
for (tlabels = olabels; tlabels <= labels; tlabels++) {
if (tlabels == olabels) tname = origin;
else if (tlabels == labels) tname = name;
else tname = new Name(name, labels - tlabels);
TypeMap nameInfo = findName(tname);
if (nameInfo == null) continue;
/* If this is an ANY lookup, return everything. */
if (tlabels == labels && type == Type.ANY) return nameInfo.getAll();
/* Look for an NS */
if (tlabels > olabels || isCache) {
o = nameInfo.get(Type.NS);
if (o != null) {
if (isCache) bestns = o;
else return o;
}
}
/* If this is the name, look for the actual type. */
if (tlabels == labels) {
o = nameInfo.get(type);
if (o != null) return o;
}
/* If this is the name, look for a CNAME */
if (tlabels == labels) {
o = nameInfo.get(Type.CNAME);
if (o != null) return o;
}
/* Look for a DNAME, unless this is the actual name */
if (tlabels < labels) {
o = nameInfo.get(Type.DNAME);
if (o != null) return o;
}
/*
* If this is the name and this is a cache, look for an
* NXDOMAIN entry.
*/
if (tlabels == labels && isCache) {
o = nameInfo.get((short) 0);
if (o != null) return o;
}
/*
* If this is the name and we haven't matched anything,
* just return the name.
*/
if (tlabels == labels) return nameInfo;
}
if (bestns == null) return null;
else return bestns;
}
private synchronized SetResponse lookup(Name name, int type) {
int labels;
int olabels;
int tlabels;
RRset rrset;
Name tname;
Object types;
SetResponse sr;
if (!name.subdomain(origin)) return SetResponse.ofType(SetResponse.NXDOMAIN);
labels = name.labels();
olabels = origin.labels();
for (tlabels = olabels; tlabels <= labels; tlabels++) {
boolean isOrigin = (tlabels == olabels);
boolean isExact = (tlabels == labels);
if (isOrigin) tname = origin;
else if (isExact) tname = name;
else tname = new Name(name, labels - tlabels);
types = exactName(tname);
if (types == null) continue;
/* If this is a delegation, return that. */
if (!isOrigin) {
RRset ns = oneRRset(types, Type.NS);
if (ns != null) return new SetResponse(SetResponse.DELEGATION, ns);
}
/* If this is an ANY lookup, return everything. */
if (isExact && type == Type.ANY) {
sr = new SetResponse(SetResponse.SUCCESSFUL);
RRset[] sets = allRRsets(types);
for (int i = 0; i < sets.length; i++) sr.addRRset(sets[i]);
return sr;
}
/*
* If this is the name, look for the actual type or a CNAME.
* Otherwise, look for a DNAME.
*/
if (isExact) {
rrset = oneRRset(types, type);
if (rrset != null) {
sr = new SetResponse(SetResponse.SUCCESSFUL);
sr.addRRset(rrset);
return sr;
}
rrset = oneRRset(types, Type.CNAME);
if (rrset != null) return new SetResponse(SetResponse.CNAME, rrset);
} else {
rrset = oneRRset(types, Type.DNAME);
if (rrset != null) return new SetResponse(SetResponse.DNAME, rrset);
}
/* We found the name, but not the type. */
if (isExact) return SetResponse.ofType(SetResponse.NXRRSET);
}
if (hasWild) {
for (int i = 0; i < labels - olabels; i++) {
tname = name.wild(i + 1);
types = exactName(tname);
if (types == null) continue;
rrset = oneRRset(types, type);
if (rrset != null) {
sr = new SetResponse(SetResponse.SUCCESSFUL);
sr.addRRset(rrset);
return sr;
}
}
}
return SetResponse.ofType(SetResponse.NXDOMAIN);
}
