diff options
Diffstat (limited to 'libjava/classpath/gnu/javax/net/ssl/provider/Alert.java')
| -rw-r--r-- | libjava/classpath/gnu/javax/net/ssl/provider/Alert.java | 288 |
1 files changed, 288 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/javax/net/ssl/provider/Alert.java b/libjava/classpath/gnu/javax/net/ssl/provider/Alert.java new file mode 100644 index 000000000..0ceb96bbb --- /dev/null +++ b/libjava/classpath/gnu/javax/net/ssl/provider/Alert.java @@ -0,0 +1,288 @@ +/* Alert.java -- SSL Alert message. + Copyright (C) 2006 Free Software Foundation, Inc. + +This file is a part of GNU Classpath. + +GNU Classpath is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 2 of the License, or (at +your option) any later version. + +GNU Classpath 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 +General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GNU Classpath; if not, write to the Free Software +Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 +USA + +Linking this library statically or dynamically with other modules is +making a combined work based on this library. Thus, the terms and +conditions of the GNU General Public License cover the whole +combination. + +As a special exception, the copyright holders of this library give you +permission to link this library with independent modules to produce an +executable, regardless of the license terms of these independent +modules, and to copy and distribute the resulting executable under +terms of your choice, provided that you also meet, for each linked +independent module, the terms and conditions of the license of that +module. An independent module is a module which is not derived from +or based on this library. If you modify this library, you may extend +this exception to your version of the library, but you are not +obligated to do so. If you do not wish to do so, delete this +exception statement from your version. */ + + +package gnu.javax.net.ssl.provider; + +import java.io.PrintWriter; +import java.io.StringWriter; + +import java.nio.ByteBuffer; + +/** + * An alert message in the SSL protocol. Alerts are sent both as warnings + * which may allow execution to continue, or they may be fatal, which will + * halt this session. An alert object is composed of two enums -- the level, + * which indicates the seriousness of the alert, and the description, which + * indicates the reason for the alert. + * + * <pre> + * struct { + * AlertLevel level; + * AlertDescription description; + * } + * </pre> + */ +public final class Alert implements Constructed +{ + + // Fields. + // ------------------------------------------------------------------------- + + /** The underlying byte buffer. */ + private final ByteBuffer buffer; + + // Constructor. + // ------------------------------------------------------------------------- + + public Alert (final ByteBuffer buffer) + { + this.buffer = buffer; + } + + public Alert (final Level level, final Description description) + { + level.getClass (); + description.getClass (); + ByteBuffer b = ByteBuffer.allocate (2); + b.put (0, (byte) level.getValue ()); + b.put (1, (byte) description.getValue ()); + this.buffer = b.asReadOnlyBuffer (); + } + + // Instance methods. + // ------------------------------------------------------------------------- + + public int length () + { + return 2; + } + + byte[] getEncoded() + { + byte[] buf = new byte[2]; + buffer.position (0); + buffer.get (buf); + return buf; + } + + public Level level() + { + return Level.forInteger (buffer.get (0) & 0xFF); + } + + public Description description() + { + return Description.forInteger (buffer.get (1) & 0xFF); + } + + public void setLevel (final Level level) + { + buffer.put (0, (byte) level.getValue ()); + } + + public void setDescription (final Description description) + { + buffer.put (1, (byte) description.getValue ()); + } + + public boolean equals (Object o) + { + if (!(o instanceof Alert)) + return false; + Alert that = (Alert) o; + return that.buffer.position (0).equals (buffer.position (0)); + } + + public int hashCode () + { + return buffer.getShort (0) & 0xFFFF; + } + + public String toString() + { + return toString (null); + } + + public String toString (final String prefix) + { + StringWriter str = new StringWriter (); + PrintWriter out = new PrintWriter (str); + if (prefix != null) out.print (prefix); + out.println ("struct {"); + if (prefix != null) out.print (prefix); + out.print (" level: "); + out.print (level ()); + out.println (";"); + if (prefix != null) out.print (prefix); + out.print (" description: "); + out.print (description ()); + out.println (";"); + if (prefix != null) out.print (prefix); + out.print ("} Alert;"); + return str.toString (); + } + + // Enumerations. + // ------------------------------------------------------------------------- + + /** + * The level enumeration. + * + * <pre> + * enum { warning(1), fatal(2), (255) } AlertLevel; + * </pre> + */ + public static enum Level + { + + WARNING (1), FATAL (2); + + private final int value; + + private Level(int value) + { + this.value = value; + } + + public static Level forInteger (final int value) + { + switch (value & 0xFF) + { + case 1: return WARNING; + case 2: return FATAL; + default: throw new IllegalArgumentException ("invalid alert level: " + value); + } + } + + public int getValue() + { + return value; + } + } + + /** + * The description enumeration. + */ + public static enum Description + { + CLOSE_NOTIFY ( 0), + UNEXPECTED_MESSAGE ( 10), + BAD_RECORD_MAC ( 20), + DECRYPTION_FAILED ( 21), + RECORD_OVERFLOW ( 22), + DECOMPRESSION_FAILURE ( 30), + HANDSHAKE_FAILURE ( 40), + NO_CERTIFICATE ( 41), + BAD_CERTIFICATE ( 42), + UNSUPPORTED_CERTIFICATE ( 43), + CERTIFICATE_REVOKED ( 44), + CERTIFICATE_EXPIRED ( 45), + CERTIFICATE_UNKNOWN ( 46), + ILLEGAL_PARAMETER ( 47), + UNKNOWN_CA ( 48), + ACCESS_DENIED ( 49), + DECODE_ERROR ( 50), + DECRYPT_ERROR ( 51), + EXPORT_RESTRICTION ( 60), + PROTOCOL_VERSION ( 70), + INSUFFICIENT_SECURITY ( 71), + INTERNAL_ERROR ( 80), + USER_CANCELED ( 90), + NO_RENEGOTIATION (100), + UNSUPPORTED_EXTENSION (110), + CERTIFICATE_UNOBTAINABLE (111), + UNRECOGNIZED_NAME (112), + BAD_CERTIFICATE_STATUS_RESPONSE (113), + BAD_CERTIFICATE_HASH_VALUE (114), + UNKNOWN_SRP_USERNAME (120), + MISSING_SRP_USERNAME (121); + + private final int value; + + private Description(int value) + { + this.value = value; + } + + /** + * Return an alert description object based on the specified integer + * value. + * + * @param value The raw description value. + * @return The appropriate description object. + */ + public static Description forInteger (final int value) + { + switch (value & 0xFF) + { + case 0: return CLOSE_NOTIFY; + case 10: return UNEXPECTED_MESSAGE; + case 20: return BAD_RECORD_MAC; + case 21: return DECRYPTION_FAILED; + case 22: return RECORD_OVERFLOW; + case 30: return DECOMPRESSION_FAILURE; + case 40: return HANDSHAKE_FAILURE; + case 41: return NO_CERTIFICATE; + case 42: return BAD_CERTIFICATE; + case 43: return UNSUPPORTED_CERTIFICATE; + case 44: return CERTIFICATE_REVOKED; + case 45: return CERTIFICATE_EXPIRED; + case 46: return CERTIFICATE_UNKNOWN; + case 47: return ILLEGAL_PARAMETER; + case 48: return UNKNOWN_CA; + case 49: return ACCESS_DENIED; + case 50: return DECODE_ERROR; + case 51: return DECRYPT_ERROR; + case 60: return EXPORT_RESTRICTION; + case 70: return PROTOCOL_VERSION; + case 71: return INSUFFICIENT_SECURITY; + case 80: return INTERNAL_ERROR; + case 90: return USER_CANCELED; + case 100: return NO_RENEGOTIATION; + case 120: return UNKNOWN_SRP_USERNAME; + case 121: return MISSING_SRP_USERNAME; + default: throw new IllegalArgumentException("unknown alert description: " + value); + } + } + + public int getValue() + { + return value; + } + } +} |