diff options
Diffstat (limited to 'src/net/gcdc/asn1/uper/StringCoder.java')
| -rw-r--r-- | src/net/gcdc/asn1/uper/StringCoder.java | 342 |
1 files changed, 0 insertions, 342 deletions
diff --git a/src/net/gcdc/asn1/uper/StringCoder.java b/src/net/gcdc/asn1/uper/StringCoder.java deleted file mode 100644 index 33a9df6..0000000 --- a/src/net/gcdc/asn1/uper/StringCoder.java +++ /dev/null @@ -1,342 +0,0 @@ -package net.gcdc.asn1.uper; - -import java.lang.annotation.Annotation; -import java.lang.reflect.Field; -import java.math.BigInteger; -import java.nio.ByteBuffer; -import java.nio.CharBuffer; -import java.nio.charset.StandardCharsets; -import java.util.ArrayList; -import java.util.Arrays; -import java.util.List; - -import logger.Logger; -import logger.LoggerFactory; - -import net.gcdc.asn1.datatypes.Asn1Default; -import net.gcdc.asn1.datatypes.Asn1String; -import net.gcdc.asn1.datatypes.CharacterRestriction; -import net.gcdc.asn1.datatypes.DefaultAlphabet; -import net.gcdc.asn1.datatypes.FixedSize; -import net.gcdc.asn1.datatypes.RestrictedString; -import net.gcdc.asn1.datatypes.SizeRange; - - -class StringCoder implements Decoder, Encoder { - - private static final Logger LOGGER = LoggerFactory.getLogger("asnLogger"); - - @Override public <T> boolean canEncode(T obj, Annotation[] extraAnnotations) { - return obj instanceof String || obj instanceof Asn1String; - } - - @Override public <T> void encode(BitBuffer bitbuffer, T obj, Annotation[] extraAnnotations) throws Asn1EncodingException { - String pos = String.format("Position: %d.%d", bitbuffer.position()/8 , bitbuffer.position() % 8); - UperEncoder.logger.debug(String.format("%s: encode STRING %s of type %s", pos, obj, obj.getClass().getName())); - Class<?> type = obj.getClass(); - AnnotationStore annotations = new AnnotationStore(type.getAnnotations(), extraAnnotations); - String string = (obj instanceof String) ? ((String) obj) : ((Asn1String) obj).value(); - RestrictedString restrictionAnnotation = annotations.getAnnotation(RestrictedString.class); - if (restrictionAnnotation == null) { - throw new UnsupportedOperationException("Unrestricted character strings are not supported yet. All annotations: " + Arrays.asList(type.getAnnotations())); - } - - FixedSize fixedSize = annotations.getAnnotation(FixedSize.class); - SizeRange sizeRange = annotations.getAnnotation(SizeRange.class); - if (fixedSize != null && fixedSize.value() != string.length()) { - throw new IllegalArgumentException( - "Bad string length, expected " + fixedSize.value() + ", got " + string.length()); - } - if (sizeRange != null - && !sizeRange.hasExtensionMarker() - && (string.length() < sizeRange.minValue() || sizeRange.maxValue() < string - .length())) { throw new IllegalArgumentException( - "Bad string length, expected " + sizeRange.minValue() + ".." - + sizeRange.maxValue() + ", got " + string.length()); } - - if (restrictionAnnotation.value() == CharacterRestriction.ObjectIdentifier) { - - byte[] oidb = ObjectIdentifierCoder.encodeObjectId(string); - - BitBuffer stringbuffer = ByteBitBuffer.createInfinite(); - - for (byte b: oidb){ - UperEncoder.encodeConstrainedInt(stringbuffer, b & 0xff, 0, 255); - } - //-for (char c : string.toCharArray()) { - //- encodeChar(stringbuffer, c, restrictionAnnotation); - //-} - //char array replaced - end - - stringbuffer.flip(); - if (stringbuffer.limit() % 8 != 0) { - throw new AssertionError("encoding resulted not in multiple of 8 bits"); - } - int numOctets = (stringbuffer.limit() + 7) / 8; // Actually +7 is not needed here, - // since we already checked with %8. - int position1 = bitbuffer.position(); - UperEncoder.encodeLengthDeterminant(bitbuffer, numOctets); - UperEncoder.logger.debug(String.format("ObjectIdentifier %s, length %d octets, encoded as %s", string, numOctets, bitbuffer.toBooleanStringFromPosition(position1))); - int position2 = bitbuffer.position(); - for (int i = 0; i < stringbuffer.limit(); i++) { - bitbuffer.put(stringbuffer.get()); - } - UperEncoder.logger.debug(String.format("UTF8String %s, encoded length %d octets, value bits: %s", string, numOctets, bitbuffer.toBooleanStringFromPosition(position2))); - return; - } else if (restrictionAnnotation.value() == CharacterRestriction.UTF8String) { - // UTF8 length - BitBuffer stringbuffer = ByteBitBuffer.createInfinite(); - - //char array replaced - begin - byte[] stringasbytearray = string.getBytes(StandardCharsets.UTF_8); - - for (byte b: stringasbytearray){ - UperEncoder.encodeConstrainedInt(stringbuffer, b & 0xff, 0, 255); - } - //-for (char c : string.toCharArray()) { - //- encodeChar(stringbuffer, c, restrictionAnnotation); - //-} - //char array replaced - end - - stringbuffer.flip(); - if (stringbuffer.limit() % 8 != 0) { - throw new AssertionError("utf8 encoding resulted not in multiple of 8 bits"); - } - int numOctets = (stringbuffer.limit() + 7) / 8; // Actually +7 is not needed here, - // since we already checked with %8. - int position1 = bitbuffer.position(); - UperEncoder.encodeLengthDeterminant(bitbuffer, numOctets); - UperEncoder.logger.debug(String.format("UTF8String %s, length %d octets, encoded as %s", string, numOctets, bitbuffer.toBooleanStringFromPosition(position1))); - int position2 = bitbuffer.position(); - for (int i = 0; i < stringbuffer.limit(); i++) { - bitbuffer.put(stringbuffer.get()); - } - UperEncoder.logger.debug(String.format("UTF8String %s, encoded length %d octets, value bits: %s", string, numOctets, bitbuffer.toBooleanStringFromPosition(position2))); - return; - } else if (fixedSize != null) { - if (fixedSize.value() != string.length()) { throw new IllegalArgumentException( - "String length does not match constraints"); } - int position = bitbuffer.position(); - for (int i = 0; i < fixedSize.value(); i++) { - encodeChar(bitbuffer, string.charAt(i), restrictionAnnotation); - } - UperEncoder.logger.debug(String.format("string encoded as <%s>", bitbuffer.toBooleanStringFromPosition(position))); - return; - } else if (sizeRange != null) { - UperEncoder.logger.debug("string length"); - int position1 = bitbuffer.position(); - UperEncoder.encodeConstrainedInt(bitbuffer, string.length(), sizeRange.minValue(),sizeRange.maxValue(), sizeRange.hasExtensionMarker()); - int position2 = bitbuffer.position(); - UperEncoder.logger.debug("string content"); - for (int i = 0; i < string.length(); i++) { - encodeChar(bitbuffer, string.charAt(i), restrictionAnnotation); - } - UperEncoder.logger.debug(String.format("STRING %s size %d: %s", obj.getClass().getName(), bitbuffer.toBooleanString(position1, position2 - position1),bitbuffer.toBooleanStringFromPosition(position2))); - return; - } else { - int position1 = bitbuffer.position(); - UperEncoder.encodeLengthDeterminant(bitbuffer, string.length()); - int position2 = bitbuffer.position(); - for (int i = 0; i < string.length(); i++) { - encodeChar(bitbuffer, string.charAt(i), restrictionAnnotation); - } - UperEncoder.logger.debug(String.format("STRING %s size %s: %s", obj.getClass().getName(), bitbuffer.toBooleanString(position1, position2 - position1),bitbuffer.toBooleanStringFromPosition(position2))); - return; - } - } - - @Override public <T> boolean canDecode(Class<T> classOfT, Annotation[] extraAnnotations) { - return String.class.isAssignableFrom(classOfT) || Asn1String.class.isAssignableFrom(classOfT); - } - - @Override public <T> T decode(BitBuffer bitbuffer, - Class<T> classOfT, Field field, - Annotation[] extraAnnotations) { - UperEncoder.logger.debug("decode String"); - AnnotationStore annotations = new AnnotationStore(classOfT.getAnnotations(), extraAnnotations); - RestrictedString restrictionAnnotation = annotations.getAnnotation(RestrictedString.class); - if (restrictionAnnotation == null) { - throw new UnsupportedOperationException( - "Unrestricted character strings are not supported yet. All annotations: " + Arrays.asList(classOfT.getAnnotations())); - } - if (restrictionAnnotation.value() == CharacterRestriction.ObjectIdentifier) { - //decode object identifier - Long numOctets = UperEncoder.decodeLengthDeterminant(bitbuffer); - List<Boolean> content = new ArrayList<Boolean>(); - for (int i = 0; i < numOctets * 8; i++) { - content.add(bitbuffer.get()); - } - byte[] contentBytes = UperEncoder.bytesFromCollection(content); - UperEncoder.logger.debug(String.format("Content bytes (hex): %s", UperEncoder.hexStringFromBytes(contentBytes))); - String resultStr = ObjectIdentifierCoder.decodeObjectId(contentBytes); - UperEncoder.logger.debug(String.format("Object Identifier: %s", resultStr)); - T result = UperEncoder.instantiate(classOfT, resultStr); - return result; - } else if (restrictionAnnotation.value() == CharacterRestriction.UTF8String) { - Long numOctets = UperEncoder.decodeLengthDeterminant(bitbuffer); - List<Boolean> content = new ArrayList<Boolean>(); - for (int i = 0; i < numOctets * 8; i++) { - content.add(bitbuffer.get()); - } - byte[] contentBytes = UperEncoder.bytesFromCollection(content); - UperEncoder.logger.debug(String.format("Content bytes (hex): %s", UperEncoder.hexStringFromBytes(contentBytes))); - String resultStr = StandardCharsets.UTF_8.decode(ByteBuffer.wrap(contentBytes)).toString(); - UperEncoder.logger.debug(String.format("Decoded as %s", resultStr)); - T result = UperEncoder.instantiate(classOfT, resultStr); - return result; - } else { - FixedSize fixedSize = annotations.getAnnotation(FixedSize.class); - SizeRange sizeRange = annotations.getAnnotation(SizeRange.class); - long numChars = (fixedSize != null) ? fixedSize.value() : - (sizeRange != null) ? UperEncoder.decodeConstrainedInt(bitbuffer, - UperEncoder.intRangeFromSizeRange(sizeRange)) : - UperEncoder.decodeLengthDeterminant(bitbuffer); - UperEncoder.logger.debug(String.format("known-multiplier string, numchars: %d", numChars)); - StringBuilder stringBuilder = new StringBuilder((int) numChars); - for (int c = 0; c < numChars; c++) { - stringBuilder.append(decodeRestrictedChar(bitbuffer, restrictionAnnotation)); - } - String resultStr = stringBuilder.toString(); - UperEncoder.logger.debug(String.format("Decoded as %s", resultStr)); - T result = UperEncoder.instantiate(classOfT, resultStr); - return result; - } - } - - private static void encodeChar(BitBuffer bitbuffer, char c, RestrictedString restriction) throws Asn1EncodingException { - UperEncoder.logger.debug(String.format("char %s", c)); - switch (restriction.value()) { - case IA5String: - if (restriction.alphabet() != DefaultAlphabet.class) { - throw new UnsupportedOperationException("alphabet for IA5String is not supported yet."); - } - UperEncoder.encodeConstrainedInt( - bitbuffer, - StandardCharsets.US_ASCII.encode(CharBuffer.wrap(new char[] { c })).get() & 0xff, - 0, - 127); - return; - case UTF8String: - if (restriction.alphabet() != DefaultAlphabet.class) { - throw new UnsupportedOperationException("alphabet for UTF8 is not supported yet."); - } - ByteBuffer buffer = StandardCharsets.UTF_8.encode(CharBuffer.wrap(new char[] { c })); - for (int i = 0; i < buffer.limit(); i++) { - UperEncoder.encodeConstrainedInt(bitbuffer, buffer.get() & 0xff, 0, 255); - } - return; - case VisibleString: - case ISO646String: - if (restriction.alphabet() != DefaultAlphabet.class) { - char[] chars; - try { - chars = UperEncoder.instantiate(restriction.alphabet()).chars().toCharArray(); - } catch (IllegalArgumentException e) { - LOGGER.info("Uninstantinatable alphabet ", e); - throw new IllegalArgumentException("Uninstantinatable alphabet" + restriction.alphabet().getName()); - } - if (BigInteger.valueOf(chars.length - 1).bitLength() < BigInteger.valueOf(126) - .bitLength()) { - Arrays.sort(chars); - String strAlphabet = new String(chars); - int index = strAlphabet.indexOf(c); - if (index < 0) { throw new IllegalArgumentException("can't find character " + c + " in alphabet " + strAlphabet); } - UperEncoder.encodeConstrainedInt( - bitbuffer, - index, - 0, - chars.length - 1); - return; - } else { - UperEncoder.encodeConstrainedInt( - bitbuffer, - StandardCharsets.US_ASCII.encode(CharBuffer.wrap(new char[] { c })) - .get() & 0xff, - 0, - 126); - return; - } - } else { - UperEncoder.encodeConstrainedInt( - bitbuffer, - StandardCharsets.US_ASCII.encode(CharBuffer.wrap(new char[] { c })) - .get() & 0xff, - 0, - 126); - return; - } - default: - throw new UnsupportedOperationException("String type " + restriction - + " is not supported yet"); - } - } - - private static String decodeRestrictedChar(BitBuffer bitqueue, - RestrictedString restrictionAnnotation) { - switch (restrictionAnnotation.value()) { - case IA5String: { - if (restrictionAnnotation.alphabet() != DefaultAlphabet.class) { - throw new UnsupportedOperationException( - "alphabet for IA5String is not supported yet."); - } - byte charByte = (byte) UperEncoder.decodeConstrainedInt(bitqueue, UperEncoder.newRange(0, 127, false)); - byte[] bytes = new byte[] { charByte }; - String result = StandardCharsets.US_ASCII.decode(ByteBuffer.wrap(bytes)).toString(); - if (result.length() != 1) { - throw new AssertionError("decoded more than one char (" + result + ")"); - } - return result; - } - case VisibleString: - case ISO646String: { - if (restrictionAnnotation.alphabet() != DefaultAlphabet.class) { - char[] chars; - try { - chars = UperEncoder.instantiate(restrictionAnnotation.alphabet()).chars().toCharArray(); - } catch (IllegalArgumentException e) { - LOGGER.info("Uninstantinatable alphabet ", e); - throw new IllegalArgumentException("Uninstantinatable alphabet " + restrictionAnnotation.alphabet().getName()); - } - if (BigInteger.valueOf(chars.length - 1).bitLength() < BigInteger.valueOf(126) - .bitLength()) { - Arrays.sort(chars); - int index = (byte) UperEncoder.decodeConstrainedInt(bitqueue, UperEncoder.newRange(0, chars.length - 1, false)); - String strAlphabet = new String(chars); - char c = strAlphabet.charAt(index); - String result = new String("" + c); - return result; - } else { // Encode normally - byte charByte = (byte) UperEncoder.decodeConstrainedInt(bitqueue, UperEncoder.newRange(0, 126, false)); - byte[] bytes = new byte[] { charByte }; - String result = StandardCharsets.US_ASCII.decode(ByteBuffer.wrap(bytes)).toString(); - if (result.length() != 1) { throw new AssertionError( - "decoded more than one char (" + result + ")"); - } - return result; - } - } else { // Encode normally - byte charByte = (byte) UperEncoder.decodeConstrainedInt(bitqueue, UperEncoder.newRange(0, 126, false)); - byte[] bytes = new byte[] { charByte }; - String result = StandardCharsets.US_ASCII.decode(ByteBuffer.wrap(bytes)).toString(); - if (result.length() != 1) { - throw new AssertionError("decoded more than one char (" + result + ")"); - } - return result; - } - } - default: - throw new UnsupportedOperationException("String type " + restrictionAnnotation + " is not supported yet"); - - } - } - - @Override - public <T> T getDefault(Class<T> classOfT, Annotation[] extraAnnotations) { - AnnotationStore annotations = new AnnotationStore(classOfT.getAnnotations(), extraAnnotations); - Asn1Default defaultAnnotation = annotations.getAnnotation(Asn1Default.class); - if (defaultAnnotation == null) return null; - T result = UperEncoder.instantiate(classOfT, defaultAnnotation.value()); - return result; - } - -}
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