diff options
Diffstat (limited to 'gnu/javax/net/ssl/provider/Extension.java')
| -rw-r--r-- | gnu/javax/net/ssl/provider/Extension.java | 260 |
1 files changed, 146 insertions, 114 deletions
diff --git a/gnu/javax/net/ssl/provider/Extension.java b/gnu/javax/net/ssl/provider/Extension.java index 1c79dd5cb..c79e58832 100644 --- a/gnu/javax/net/ssl/provider/Extension.java +++ b/gnu/javax/net/ssl/provider/Extension.java @@ -38,177 +38,209 @@ exception statement from your version. */ package gnu.javax.net.ssl.provider; -import java.io.EOFException; -import java.io.InputStream; -import java.io.IOException; -import java.io.OutputStream; import java.io.PrintWriter; import java.io.StringWriter; -final class Extension implements Constructed +import java.nio.ByteBuffer; +import java.nio.ByteOrder; + +/** + * An SSL hello extension. + * + * <pre> + * struct { + * ExtensionType extension_type; + * opaque extension_data<0..2^16-1>; + * } Extension;</pre> + * + * @author csm@gnu.org + */ +public final class Extension implements Builder, Constructed { // Fields. // ------------------------------------------------------------------------- - private final Type type; - private final byte[] value; + private ByteBuffer buffer; // Constructor. // ------------------------------------------------------------------------- - Extension(Type type, byte[] value) + public Extension(final ByteBuffer buffer) { - if (type == null || value == null) - { - throw new NullPointerException(); - } - this.type = type; - this.value = value; + this.buffer = buffer.duplicate().order(ByteOrder.BIG_ENDIAN); } - - // Class method. - // ------------------------------------------------------------------------- - - static Extension read(InputStream in) throws IOException + + public Extension(final Type type, final Value value) { - Type t = Type.read(in); - int len = (in.read() & 0xFF) << 8 | (in.read() & 0xFF); - byte[] v = new byte[len]; - int count = 0; - while (count < len) - { - int l = in.read(v, count, len - count); - if (l == -1) - { - throw new EOFException("unexpected end of extension"); - } - count += l; - } - return new Extension(t, v); + ByteBuffer valueBuffer = value.buffer(); + int length = 2 + 2 + valueBuffer.remaining(); + buffer = ByteBuffer.allocate(length); + buffer.putShort((short) type.getValue()); + buffer.putShort((short) valueBuffer.remaining()); + buffer.put(valueBuffer); + buffer.rewind(); } // Instance methods. // ------------------------------------------------------------------------- - public void write(OutputStream out) throws IOException + public int length () + { + return (buffer.getShort (2) & 0xFFFF) + 4; + } + + public ByteBuffer buffer() { - out.write(type.getEncoded()); - out.write(value.length >>> 8 & 0xFF); - out.write(value.length & 0xFF); - out.write(value); + return (ByteBuffer) buffer.duplicate().limit(length()); } - Type getType() + public Type type() { - return type; + return Type.forValue (buffer.getShort (0) & 0xFFFF); } - byte[] getValue() + public byte[] valueBytes() { + int len = buffer.getShort (2) & 0xFFFF; + byte[] value = new byte[len]; + ((ByteBuffer) buffer.duplicate ().position (4)).get (value); return value; } + + public ByteBuffer valueBuffer() + { + int len = buffer.getShort(2) & 0xFFFF; + return ((ByteBuffer) buffer.duplicate().position(4).limit(len+4)).slice(); + } + + public Value value() + { + switch (type ()) + { + case SERVER_NAME: + return new ServerNameList(valueBuffer()); + + case MAX_FRAGMENT_LENGTH: + switch (valueBuffer().get() & 0xFF) + { + case 1: return MaxFragmentLength.LEN_2_9; + case 2: return MaxFragmentLength.LEN_2_10; + case 3: return MaxFragmentLength.LEN_2_11; + case 4: return MaxFragmentLength.LEN_2_12; + default: + throw new IllegalArgumentException("invalid max_fragment_len"); + } + + case TRUNCATED_HMAC: + return new TruncatedHMAC(); + + case CLIENT_CERTIFICATE_URL: + return new CertificateURL(valueBuffer()); + + case TRUSTED_CA_KEYS: + return new TrustedAuthorities(valueBuffer()); + + case STATUS_REQUEST: + return new CertificateStatusRequest(valueBuffer()); + + case SRP: + case CERT_TYPE: + } + return new UnresolvedExtensionValue(valueBuffer()); + } + + public void setLength (final int newLength) + { + if (newLength < 0 || newLength > 65535) + throw new IllegalArgumentException ("length is out of bounds"); + buffer.putShort (2, (short) newLength); + } + + public void setType (final Type type) + { + buffer.putShort(0, (short) type.getValue()); + } + public void setValue (byte[] value) + { + setValue (value, 0, value.length); + } + + public void setValue (final byte[] value, final int offset, final int length) + { + if (length != length ()) + throw new IllegalArgumentException ("length is different than claimed length"); + ((ByteBuffer) buffer.duplicate().position(4)).put(value, offset, length); + } + public String toString() { + return toString(null); + } + + public String toString(String prefix) + { StringWriter str = new StringWriter(); PrintWriter out = new PrintWriter(str); + if (prefix != null) out.print (prefix); out.println("struct {"); - out.println(" type = " + type + ";"); + if (prefix != null) out.print (prefix); + out.println(" type = " + type () + ";"); + if (prefix != null) out.print (prefix); + String subprefix = " "; + if (prefix != null) subprefix = prefix + subprefix; out.println(" value ="); - out.println(Util.hexDump(value, " ")); - out.println("} Extension;"); + out.println(value().toString(subprefix)); + if (prefix != null) out.print (prefix); + out.print("} Extension;"); return str.toString(); } - // Inner class. + // Inner classes. // ------------------------------------------------------------------------- - static final class Type implements Enumerated + public static enum Type { - - // Constants and fields. - // ----------------------------------------------------------------------- - - static final Type SERVER_NAME = new Type(0); - static final Type MAX_FRAGMENT_LENGTH = new Type(1); - static final Type CLIENT_CERTIFICATE_URL = new Type(2); - static final Type TRUSTED_CA_KEYS = new Type(3); - static final Type TRUNCATED_HMAC = new Type(4); - static final Type STATUS_REQUEST = new Type(5); - static final Type SRP = new Type(6); - static final Type CERT_TYPE = new Type(7); + SERVER_NAME (0), + MAX_FRAGMENT_LENGTH (1), + CLIENT_CERTIFICATE_URL (2), + TRUSTED_CA_KEYS (3), + TRUNCATED_HMAC (4), + STATUS_REQUEST (5), + SRP (6), + CERT_TYPE (7); private final int value; - // Constructor. - // ----------------------------------------------------------------------- - private Type(int value) { this.value = value; } - // Class methods. - // ----------------------------------------------------------------------- - - static Type read(InputStream in) throws IOException + public static Type forValue (final int value) { - int i = in.read(); - if (i == -1) - { - throw new EOFException("unexpected end of input stream"); - } - int value = (i & 0xFF) << 8; - i = in.read(); - if (i == -1) + switch (value & 0xFFFF) { - throw new EOFException("unexpected end of input stream"); - } - value |= i & 0xFF; - switch (value) - { - case 0: return SERVER_NAME; - case 1: return MAX_FRAGMENT_LENGTH; - case 2: return CLIENT_CERTIFICATE_URL; - case 3: return TRUSTED_CA_KEYS; - case 4: return TRUNCATED_HMAC; - case 5: return STATUS_REQUEST; - case 6: return SRP; - case 7: return CERT_TYPE; - default: return new Type(value); + case 0: return SERVER_NAME; + case 1: return MAX_FRAGMENT_LENGTH; + case 2: return CLIENT_CERTIFICATE_URL; + case 3: return TRUSTED_CA_KEYS; + case 4: return TRUNCATED_HMAC; + case 5: return STATUS_REQUEST; + case 6: return SRP; + case 7: return CERT_TYPE; + default: return null; } } - - // Instance methods. - // ----------------------------------------------------------------------- - - public byte[] getEncoded() - { - return new byte[] { - (byte) (value >>> 8 & 0xFF), (byte) (value & 0xFF) - }; - } - + public int getValue() { return value; } - - public String toString() - { - switch (value) - { - case 0: return "server_name"; - case 1: return "max_fragment_length"; - case 2: return "client_certificate_url"; - case 3: return "trusted_ca_keys"; - case 4: return "truncated_hmac"; - case 5: return "status_request"; - case 6: return "srp"; - case 7: return "cert_type"; - default: return "unknown(" + value + ")"; - } - } + } + + public static abstract class Value implements Builder, Constructed + { } } |