diff options
Diffstat (limited to 'src/main/java/com/lowagie/bc/asn1/DERInputStream.java')
| -rw-r--r-- | src/main/java/com/lowagie/bc/asn1/DERInputStream.java | 258 |
1 files changed, 0 insertions, 258 deletions
diff --git a/src/main/java/com/lowagie/bc/asn1/DERInputStream.java b/src/main/java/com/lowagie/bc/asn1/DERInputStream.java deleted file mode 100644 index 3148a3f..0000000 --- a/src/main/java/com/lowagie/bc/asn1/DERInputStream.java +++ /dev/null @@ -1,258 +0,0 @@ -package com.lowagie.bc.asn1;
-
-import java.io.ByteArrayInputStream;
-import java.io.EOFException;
-import java.io.FilterInputStream;
-import java.io.IOException;
-import java.io.InputStream;
-
-/**
- * Don't use this class. It will eventually disappear, use ASN1InputStream.
- * <br>
- * This class is scheduled for removal.
- */
-public class DERInputStream
- extends FilterInputStream implements DERTags
-{
- public DERInputStream(
- InputStream is)
- {
- super(is);
- }
-
- protected int readLength()
- throws IOException
- {
- int length = read();
- if (length < 0)
- {
- throw new IOException("EOF found when length expected");
- }
-
- if (length == 0x80)
- {
- return -1; // indefinite-length encoding
- }
-
- if (length > 127)
- {
- int size = length & 0x7f;
-
- length = 0;
- for (int i = 0; i < size; i++)
- {
- int next = read();
-
- if (next < 0)
- {
- throw new IOException("EOF found reading length");
- }
-
- length = (length << 8) + next;
- }
- }
-
- return length;
- }
-
- protected void readFully(
- byte[] bytes)
- throws IOException
- {
- int left = bytes.length;
-
- if (left == 0)
- {
- return;
- }
-
- while (left > 0)
- {
- int l = read(bytes, bytes.length - left, left);
-
- if (l < 0)
- {
- throw new EOFException("unexpected end of stream");
- }
-
- left -= l;
- }
- }
-
- /**
- * build an object given its tag and a byte stream to construct it
- * from.
- */
- protected DERObject buildObject(
- int tag,
- byte[] bytes)
- throws IOException
- {
- switch (tag)
- {
- case NULL:
- return null;
- case SEQUENCE | CONSTRUCTED:
- ByteArrayInputStream bIn = new ByteArrayInputStream(bytes);
- BERInputStream dIn = new BERInputStream(bIn);
- DERConstructedSequence seq = new DERConstructedSequence();
-
- try
- {
- for (;;)
- {
- DERObject obj = dIn.readObject();
-
- seq.addObject(obj);
- }
- }
- catch (EOFException ex)
- {
- return seq;
- }
- case SET | CONSTRUCTED:
- bIn = new ByteArrayInputStream(bytes);
- dIn = new BERInputStream(bIn);
-
- ASN1EncodableVector v = new ASN1EncodableVector();
-
- try
- {
- for (;;)
- {
- DERObject obj = dIn.readObject();
-
- v.add(obj);
- }
- }
- catch (EOFException ex)
- {
- return new DERConstructedSet(v);
- }
- case BOOLEAN:
- return new DERBoolean(bytes);
- case INTEGER:
- return new DERInteger(bytes);
- case ENUMERATED:
- return new DEREnumerated(bytes);
- case OBJECT_IDENTIFIER:
- return new DERObjectIdentifier(bytes);
- case BIT_STRING:
- int padBits = bytes[0];
- byte[] data = new byte[bytes.length - 1];
-
- System.arraycopy(bytes, 1, data, 0, bytes.length - 1);
-
- return new DERBitString(data, padBits);
- case UTF8_STRING:
- return new DERUTF8String(bytes);
- case PRINTABLE_STRING:
- return new DERPrintableString(bytes);
- case IA5_STRING:
- return new DERIA5String(bytes);
- case T61_STRING:
- return new DERT61String(bytes);
- case VISIBLE_STRING:
- return new DERVisibleString(bytes);
- case UNIVERSAL_STRING:
- return new DERUniversalString(bytes);
- case GENERAL_STRING:
- return new DERGeneralString(bytes);
- case BMP_STRING:
- return new DERBMPString(bytes);
- case OCTET_STRING:
- return new DEROctetString(bytes);
- case UTC_TIME:
- return new DERUTCTime(bytes);
- case GENERALIZED_TIME:
- return new DERGeneralizedTime(bytes);
- default:
- //
- // with tagged object tag number is bottom 5 bits
- //
- if ((tag & TAGGED) != 0)
- {
- if ((tag & 0x1f) == 0x1f)
- {
- throw new IOException("unsupported high tag encountered");
- }
-
- if (bytes.length == 0) // empty tag!
- {
- if ((tag & CONSTRUCTED) == 0)
- {
- return new DERTaggedObject(false, tag & 0x1f, new DERNull());
- }
- else
- {
- return new DERTaggedObject(false, tag & 0x1f, new DERConstructedSequence());
- }
- }
-
- //
- // simple type - implicit... return an octet string
- //
- if ((tag & CONSTRUCTED) == 0)
- {
- return new DERTaggedObject(false, tag & 0x1f, new DEROctetString(bytes));
- }
-
- bIn = new ByteArrayInputStream(bytes);
- dIn = new BERInputStream(bIn);
-
- DEREncodable dObj = dIn.readObject();
-
- //
- // explicitly tagged (probably!) - if it isn't we'd have to
- // tell from the context
- //
- if (dIn.available() == 0)
- {
- return new DERTaggedObject(tag & 0x1f, dObj);
- }
-
- //
- // another implicit object, we'll create a sequence...
- //
- seq = new DERConstructedSequence();
-
- seq.addObject(dObj);
-
- try
- {
- for (;;)
- {
- dObj = dIn.readObject();
-
- seq.addObject(dObj);
- }
- }
- catch (EOFException ex)
- {
- // ignore --
- }
-
- return new DERTaggedObject(false, tag & 0x1f, seq);
- }
-
- return new DERUnknownTag(tag, bytes);
- }
- }
-
- public DERObject readObject()
- throws IOException
- {
- int tag = read();
- if (tag == -1)
- {
- throw new EOFException();
- }
-
- int length = readLength();
- byte[] bytes = new byte[length];
-
- readFully(bytes);
-
- return buildObject(tag, bytes);
- }
-}
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