1 files changed, 149 insertions, 0 deletions
diff --git a/src/javax/jmdns/impl/constants/DNSResultCode.java b/src/javax/jmdns/impl/constants/DNSResultCode.java
new file mode 100644
index 0000000..aa089f4
--- /dev/null
+++ b/src/javax/jmdns/impl/constants/DNSResultCode.java
@@ -0,0 +1,149 @@
+/**
+ *
+ */
+package javax.jmdns.impl.constants;
+
+/**
+ * DNS result code.
+ * 
+ * @author Arthur van Hoff, Jeff Sonstein, Werner Randelshofer, Pierre Frisch, Rick Blair
+ */
+public enum DNSResultCode {
+    /**
+     * Token
+     */
+    Unknown("Unknown", 65535),
+    /**
+     * No Error [RFC1035]
+     */
+    NoError("No Error", 0),
+    /**
+     * Format Error [RFC1035]
+     */
+    FormErr("Format Error", 1),
+    /**
+     * Server Failure [RFC1035]
+     */
+    ServFail("Server Failure", 2),
+    /**
+     * Non-Existent Domain [RFC1035]
+     */
+    NXDomain("Non-Existent Domain", 3),
+    /**
+     * Not Implemented [RFC1035]
+     */
+    NotImp("Not Implemented", 4),
+    /**
+     * Query Refused [RFC1035]
+     */
+    Refused("Query Refused", 5),
+    /**
+     * Name Exists when it should not [RFC2136]
+     */
+    YXDomain("Name Exists when it should not", 6),
+    /**
+     * RR Set Exists when it should not [RFC2136]
+     */
+    YXRRSet("RR Set Exists when it should not", 7),
+    /**
+     * RR Set that should exist does not [RFC2136]
+     */
+    NXRRSet("RR Set that should exist does not", 8),
+    /**
+     * Server Not Authoritative for zone [RFC2136]]
+     */
+    NotAuth("Server Not Authoritative for zone", 9),
+    /**
+     * Name not contained in zone [RFC2136]
+     */
+    NotZone("NotZone Name not contained in zone", 10),
+
+    ;
+
+    // 0 NoError No Error [RFC1035]
+    // 1 FormErr Format Error [RFC1035]
+    // 2 ServFail Server Failure [RFC1035]
+    // 3 NXDomain Non-Existent Domain [RFC1035]
+    // 4 NotImp Not Implemented [RFC1035]
+    // 5 Refused Query Refused [RFC1035]
+    // 6 YXDomain Name Exists when it should not [RFC2136]
+    // 7 YXRRSet RR Set Exists when it should not [RFC2136]
+    // 8 NXRRSet RR Set that should exist does not [RFC2136]
+    // 9 NotAuth Server Not Authoritative for zone [RFC2136]
+    // 10 NotZone Name not contained in zone [RFC2136]
+    // 11-15 Unassigned
+    // 16 BADVERS Bad OPT Version [RFC2671]
+    // 16 BADSIG TSIG Signature Failure [RFC2845]
+    // 17 BADKEY Key not recognized [RFC2845]
+    // 18 BADTIME Signature out of time window [RFC2845]
+    // 19 BADMODE Bad TKEY Mode [RFC2930]
+    // 20 BADNAME Duplicate key name [RFC2930]
+    // 21 BADALG Algorithm not supported [RFC2930]
+    // 22 BADTRUNC Bad Truncation [RFC4635]
+    // 23-3840 Unassigned
+    // 3841-4095 Reserved for Private Use [RFC5395]
+    // 4096-65534 Unassigned
+    // 65535 Reserved, can be allocated by Standards Action [RFC5395]
+
+    /**
+     * DNS Result Code types are encoded on the last 4 bits
+     */
+    final static int     RCode_MASK         = 0x0F;
+    /**
+     * DNS Extended Result Code types are encoded on the first 8 bits
+     */
+    final static int     ExtendedRCode_MASK = 0xFF;
+
+    private final String _externalName;
+
+    private final int    _index;
+
+    DNSResultCode(String name, int index) {
+        _externalName = name;
+        _index = index;
+    }
+
+    /**
+     * Return the string representation of this type
+     * 
+     * @return String
+     */
+    public String externalName() {
+        return _externalName;
+    }
+
+    /**
+     * Return the numeric value of this type
+     * 
+     * @return String
+     */
+    public int indexValue() {
+        return _index;
+    }
+
+    /**
+     * @param flags
+     * @return label
+     */
+    public static DNSResultCode resultCodeForFlags(int flags) {
+        int maskedIndex = flags & RCode_MASK;
+        for (DNSResultCode aCode : DNSResultCode.values()) {
+            if (aCode._index == maskedIndex) return aCode;
+        }
+        return Unknown;
+    }
+
+    public static DNSResultCode resultCodeForFlags(int flags, int extendedRCode) {
+        int maskedIndex = ((extendedRCode >> 28) & ExtendedRCode_MASK) | (flags & RCode_MASK);
+        for (DNSResultCode aCode : DNSResultCode.values()) {
+            if (aCode._index == maskedIndex) return aCode;
+        }
+        return Unknown;
+    }
+
+    @Override
+    public String toString() {
+        return this.name() + " index " + this.indexValue();
+    }
+
+}