1 files changed, 231 insertions, 0 deletions
diff --git a/Crypto/src/asn1/cms/AttributeTable.cs b/Crypto/src/asn1/cms/AttributeTable.cs
new file mode 100644
index 000000000..3c0164ce8
--- /dev/null
+++ b/Crypto/src/asn1/cms/AttributeTable.cs
@@ -0,0 +1,231 @@
+using System;
+using System.Collections;
+
+using Org.BouncyCastle.Asn1;
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Asn1.Cms
+{
+ public class AttributeTable
+ {
+ private readonly IDictionary attributes;
+
+#if !(SILVERLIGHT || PORTABLE)
+ [Obsolete]
+ public AttributeTable(
+ Hashtable attrs)
+ {
+ this.attributes = Platform.CreateHashtable(attrs);
+ }
+#endif
+
+ public AttributeTable(
+ IDictionary attrs)
+ {
+ this.attributes = Platform.CreateHashtable(attrs);
+ }
+
+ public AttributeTable(
+ Asn1EncodableVector v)
+ {
+ this.attributes = Platform.CreateHashtable(v.Count);
+
+ foreach (Asn1Encodable o in v)
+ {
+ Attribute a = Attribute.GetInstance(o);
+
+ AddAttribute(a);
+ }
+ }
+
+ public AttributeTable(
+ Asn1Set s)
+ {
+ this.attributes = Platform.CreateHashtable(s.Count);
+
+ for (int i = 0; i != s.Count; i++)
+ {
+ Attribute a = Attribute.GetInstance(s[i]);
+
+ AddAttribute(a);
+ }
+ }
+
+ public AttributeTable(
+ Attributes attrs)
+ : this(Asn1Set.GetInstance(attrs.ToAsn1Object()))
+ {
+ }
+
+ private void AddAttribute(
+ Attribute a)
+ {
+ DerObjectIdentifier oid = a.AttrType;
+ object obj = attributes[oid];
+
+ if (obj == null)
+ {
+ attributes[oid] = a;
+ }
+ else
+ {
+ IList v;
+
+ if (obj is Attribute)
+ {
+ v = Platform.CreateArrayList();
+
+ v.Add(obj);
+ v.Add(a);
+ }
+ else
+ {
+ v = (IList) obj;
+
+ v.Add(a);
+ }
+
+ attributes[oid] = v;
+ }
+ }
+
+ /// <summary>Return the first attribute matching the given OBJECT IDENTIFIER</summary>
+ public Attribute this[DerObjectIdentifier oid]
+ {
+ get
+ {
+ object obj = attributes[oid];
+
+ if (obj is IList)
+ {
+ return (Attribute)((IList)obj)[0];
+ }
+
+ return (Attribute) obj;
+ }
+ }
+
+ [Obsolete("Use 'object[oid]' syntax instead")]
+ public Attribute Get(
+ DerObjectIdentifier oid)
+ {
+ return this[oid];
+ }
+
+ /**
+ * Return all the attributes matching the OBJECT IDENTIFIER oid. The vector will be
+ * empty if there are no attributes of the required type present.
+ *
+ * @param oid type of attribute required.
+ * @return a vector of all the attributes found of type oid.
+ */
+ public Asn1EncodableVector GetAll(
+ DerObjectIdentifier oid)
+ {
+ Asn1EncodableVector v = new Asn1EncodableVector();
+
+ object obj = attributes[oid];
+
+ if (obj is IList)
+ {
+ foreach (Attribute a in (IList)obj)
+ {
+ v.Add(a);
+ }
+ }
+ else if (obj != null)
+ {
+ v.Add((Attribute) obj);
+ }
+
+ return v;
+ }
+
+ public int Count
+ {
+ get
+ {
+ int total = 0;
+
+ foreach (object o in attributes.Values)
+ {
+ if (o is IList)
+ {
+ total += ((IList)o).Count;
+ }
+ else
+ {
+ ++total;
+ }
+ }
+
+ return total;
+ }
+ }
+
+ public IDictionary ToDictionary()
+ {
+ return Platform.CreateHashtable(attributes);
+ }
+
+#if !(SILVERLIGHT || PORTABLE)
+ [Obsolete("Use 'ToDictionary' instead")]
+ public Hashtable ToHashtable()
+ {
+ return new Hashtable(attributes);
+ }
+#endif
+
+ public Asn1EncodableVector ToAsn1EncodableVector()
+ {
+ Asn1EncodableVector v = new Asn1EncodableVector();
+
+ foreach (object obj in attributes.Values)
+ {
+ if (obj is IList)
+ {
+ foreach (object el in (IList)obj)
+ {
+ v.Add(Attribute.GetInstance(el));
+ }
+ }
+ else
+ {
+ v.Add(Attribute.GetInstance(obj));
+ }
+ }
+
+ return v;
+ }
+
+ public Attributes ToAttributes()
+ {
+ return new Attributes(this.ToAsn1EncodableVector());
+ }
+
+ /**
+ * Return a new table with the passed in attribute added.
+ *
+ * @param attrType
+ * @param attrValue
+ * @return
+ */
+ public AttributeTable Add(DerObjectIdentifier attrType, Asn1Encodable attrValue)
+ {
+ AttributeTable newTable = new AttributeTable(attributes);
+
+ newTable.AddAttribute(new Attribute(attrType, new DerSet(attrValue)));
+
+ return newTable;
+ }
+
+ public AttributeTable Remove(DerObjectIdentifier attrType)
+ {
+ AttributeTable newTable = new AttributeTable(attributes);
+
+ newTable.attributes.Remove(attrType);
+
+ return newTable;
+ }
+ }
+}
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