1 files changed, 152 insertions, 0 deletions
diff --git a/pki/base/util/src/netscape/security/pkcs/ContentInfo.java b/pki/base/util/src/netscape/security/pkcs/ContentInfo.java
new file mode 100644
index 000000000..91cc413bb
--- /dev/null
+++ b/pki/base/util/src/netscape/security/pkcs/ContentInfo.java
@@ -0,0 +1,152 @@
+// --- BEGIN COPYRIGHT BLOCK ---
+// This program 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; version 2 of the License.
+//
+// This program 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 this program; if not, write to the Free Software Foundation, Inc.,
+// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+//
+// (C) 2007 Red Hat, Inc.
+// All rights reserved.
+// --- END COPYRIGHT BLOCK ---
+package netscape.security.pkcs;
+
+import java.io.*;
+
+import netscape.security.util.*;
+
+/**
+ * A ContentInfo type, as defined in PKCS#7.
+ *
+ * @version 1.12
+ * @author Benjamin Renaud 
+ */
+
+public class ContentInfo {
+
+    // pkcs7 pre-defined content types
+    private static int[]  pkcs7 = {1, 2, 840, 113549, 1, 7};
+    private static int[]   data = {1, 2, 840, 113549, 1, 7, 1};
+    private static int[]  sdata = {1, 2, 840, 113549, 1, 7, 2};
+    private static int[]  edata = {1, 2, 840, 113549, 1, 7, 3};
+    private static int[] sedata = {1, 2, 840, 113549, 1, 7, 4};
+    private static int[]  ddata = {1, 2, 840, 113549, 1, 7, 5};
+    private static int[] crdata = {1, 2, 840, 113549, 1, 7, 6};
+
+    public static final ObjectIdentifier PKCS7_OID = 
+    new ObjectIdentifier(pkcs7);
+    
+    public static final ObjectIdentifier DATA_OID = 
+    new ObjectIdentifier(data);
+    
+    public static final ObjectIdentifier SIGNED_DATA_OID = 
+    new ObjectIdentifier(sdata);
+
+    public static final ObjectIdentifier ENVELOPED_DATA_OID =
+    new ObjectIdentifier(edata);
+
+    public static final ObjectIdentifier SIGNED_AND_ENVELOPED_DATA_OID =
+    new ObjectIdentifier(sedata);
+
+    public static final ObjectIdentifier DIGESTED_DATA_OID = 
+    new ObjectIdentifier(ddata);
+
+    public static final ObjectIdentifier ENCRYPTED_DATA_OID = 
+    new ObjectIdentifier(crdata);
+
+    ObjectIdentifier contentType;
+    DerValue content; // OPTIONAL
+
+    public ContentInfo(ObjectIdentifier contentType, DerValue content) {
+	this.contentType = contentType;
+	this.content = content;
+    }
+
+    /**
+     * Make a contentInfo of type data.
+     */
+    public ContentInfo(byte[] bytes) {
+	DerValue octetString = new DerValue(DerValue.tag_OctetString, bytes);
+	this.contentType = DATA_OID;
+	this.content = octetString;
+    }
+
+    public ContentInfo(DerInputStream derin) 
+    throws IOException, ParsingException {
+        DerInputStream disType;
+	DerInputStream disTaggedContent;
+	DerValue type;
+	DerValue taggedContent;
+	DerValue[] typeAndContent;
+	DerValue[] contents;
+
+	typeAndContent = derin.getSequence(2);
+
+	// Parse the content type
+	type = typeAndContent[0];
+	disType = new DerInputStream(type.toByteArray());
+	contentType = disType.getOID();
+
+	// Parse the content (OPTIONAL field).
+	// Skip the [0] EXPLICIT tag by pretending that the content is the one
+	// and only element in an implicitly tagged set
+	if (typeAndContent.length > 1) { // content is OPTIONAL
+	    taggedContent = typeAndContent[1];
+	    disTaggedContent = new DerInputStream(taggedContent.toByteArray());
+	    contents = disTaggedContent.getSet(1, true);
+	    content = contents[0];
+	}
+    }
+
+    public DerValue getContent() {
+	return content;
+    }
+
+    public byte[] getData() throws IOException {
+	if (contentType.equals(DATA_OID)) {
+	    return content.getOctetString();
+	}
+	throw new IOException("content type is not DATA: " + contentType);
+    }
+
+    public void encode(DerOutputStream out) throws IOException {
+	DerOutputStream contentDerCode;
+	DerOutputStream seq;
+	DerValue taggedContent;
+
+	contentDerCode = new DerOutputStream();
+	content.encode(contentDerCode);
+	// Add the [0] EXPLICIT tag in front of the content encoding
+	taggedContent = new DerValue((byte)0xA0,
+				     contentDerCode.toByteArray());
+
+	seq = new DerOutputStream();
+	seq.putOID(contentType);
+	seq.putDerValue(taggedContent);
+
+	out.write(DerValue.tag_Sequence, seq);
+    }
+
+    /**
+     * Returns a byte array representation of the data held in
+     * the content field.
+     */
+    public byte[] getContentBytes() throws IOException {
+	DerInputStream dis = new DerInputStream(content.toByteArray());
+	return dis.getOctetString();
+    }
+	
+    public String toString() {
+	String out = "";
+	
+	out += "Content Info Sequence\n\tContent type: " + contentType + "\n";
+	out += "\tContent: " + content;
+	return out;
+    }
+}