diff options
| author | tknall <tknall@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c> | 2006-12-01 12:20:24 +0000 |
|---|---|---|
| committer | tknall <tknall@7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c> | 2006-12-01 12:20:24 +0000 |
| commit | 6025b6016517c6d898d8957d1d7e03ba71431912 (patch) | |
| tree | b15bd6fa5ffe9588a9bca3f2b8a7e358f83b6eba /src/main/java/com/lowagie/bc/asn1/DERObjectIdentifier.java | |
| parent | d2c77e820ab4aba8235d71275755021347b3ad10 (diff) | |
| download | pdf-as-3-6025b6016517c6d898d8957d1d7e03ba71431912.tar.gz pdf-as-3-6025b6016517c6d898d8957d1d7e03ba71431912.tar.bz2 pdf-as-3-6025b6016517c6d898d8957d1d7e03ba71431912.zip | |
Initial import of release 2.2.REL-2.2@923
git-svn-id: https://joinup.ec.europa.eu/svn/pdf-as/trunk@4 7b5415b0-85f9-ee4d-85bd-d5d0c3b42d1c
Diffstat (limited to 'src/main/java/com/lowagie/bc/asn1/DERObjectIdentifier.java')
| -rw-r--r-- | src/main/java/com/lowagie/bc/asn1/DERObjectIdentifier.java | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/src/main/java/com/lowagie/bc/asn1/DERObjectIdentifier.java b/src/main/java/com/lowagie/bc/asn1/DERObjectIdentifier.java new file mode 100644 index 0000000..04c2d86 --- /dev/null +++ b/src/main/java/com/lowagie/bc/asn1/DERObjectIdentifier.java @@ -0,0 +1,170 @@ +package com.lowagie.bc.asn1;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+public class DERObjectIdentifier
+ extends DERObject
+{
+ String identifier;
+
+ /**
+ * return an OID from the passed in object
+ *
+ * @exception IllegalArgumentException if the object cannot be converted.
+ */
+ public static DERObjectIdentifier getInstance(
+ Object obj)
+ {
+ if (obj == null || obj instanceof DERObjectIdentifier)
+ {
+ return (DERObjectIdentifier)obj;
+ }
+
+ if (obj instanceof ASN1OctetString)
+ {
+ return new DERObjectIdentifier(((ASN1OctetString)obj).getOctets());
+ }
+
+ if (obj instanceof ASN1TaggedObject)
+ {
+ return getInstance(((ASN1TaggedObject)obj).getObject());
+ }
+
+ throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName());
+ }
+
+ /**
+ * return an Object Identifier from a tagged object.
+ *
+ * @param obj the tagged object holding the object we want
+ * @param explicit true if the object is meant to be explicitly
+ * tagged false otherwise.
+ * @exception IllegalArgumentException if the tagged object cannot
+ * be converted.
+ */
+ public static DERObjectIdentifier getInstance(
+ ASN1TaggedObject obj,
+ boolean explicit)
+ {
+ return getInstance(obj.getObject());
+ }
+
+
+ DERObjectIdentifier(
+ byte[] bytes)
+ {
+ StringBuffer objId = new StringBuffer();
+ int value = 0;
+ boolean first = true;
+
+ for (int i = 0; i != bytes.length; i++)
+ {
+ int b = bytes[i] & 0xff;
+
+ value = value * 128 + (b & 0x7f);
+ if ((b & 0x80) == 0) // end of number reached
+ {
+ if (first)
+ {
+ switch (value / 40)
+ {
+ case 0:
+ objId.append('0');
+ break;
+ case 1:
+ objId.append('1');
+ value -= 40;
+ break;
+ default:
+ objId.append('2');
+ value -= 80;
+ }
+ first = false;
+ }
+
+ objId.append('.');
+ objId.append(Integer.toString(value));
+ value = 0;
+ }
+ }
+
+ this.identifier = objId.toString();
+ }
+
+ public DERObjectIdentifier(
+ String identifier)
+ {
+ this.identifier = identifier;
+ }
+
+ public String getId()
+ {
+ return identifier;
+ }
+
+ private void writeField(
+ OutputStream out,
+ int fieldValue)
+ throws IOException
+ {
+ if (fieldValue >= (1 << 7))
+ {
+ if (fieldValue >= (1 << 14))
+ {
+ if (fieldValue >= (1 << 21))
+ {
+ if (fieldValue >= (1 << 28))
+ {
+ out.write((fieldValue >> 28) | 0x80);
+ }
+ out.write((fieldValue >> 21) | 0x80);
+ }
+ out.write((fieldValue >> 14) | 0x80);
+ }
+ out.write((fieldValue >> 7) | 0x80);
+ }
+ out.write(fieldValue & 0x7f);
+ }
+
+ void encode(
+ DEROutputStream out)
+ throws IOException
+ {
+ OIDTokenizer tok = new OIDTokenizer(identifier);
+ ByteArrayOutputStream bOut = new ByteArrayOutputStream();
+ DEROutputStream dOut = new DEROutputStream(bOut);
+
+ writeField(bOut,
+ Integer.parseInt(tok.nextToken()) * 40
+ + Integer.parseInt(tok.nextToken()));
+
+ while (tok.hasMoreTokens())
+ {
+ writeField(bOut, Integer.parseInt(tok.nextToken()));
+ }
+
+ dOut.close();
+
+ byte[] bytes = bOut.toByteArray();
+
+ out.writeEncoded(OBJECT_IDENTIFIER, bytes);
+ }
+
+ public int hashCode()
+ {
+ return identifier.hashCode();
+ }
+
+ public boolean equals(
+ Object o)
+ {
+ if ((o == null) || !(o instanceof DERObjectIdentifier))
+ {
+ return false;
+ }
+
+ return identifier.equals(((DERObjectIdentifier)o).identifier);
+ }
+}
|