1 files changed, 124 insertions, 0 deletions
diff --git a/src/asn1/asn1_obj.h b/src/asn1/asn1_obj.h
new file mode 100644
index 000000000..564f4ecdb
--- /dev/null
+++ b/src/asn1/asn1_obj.h
@@ -0,0 +1,124 @@
+/*
+* ASN.1 Internals
+* (C) 1999-2007 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_ASN1_H__
+#define BOTAN_ASN1_H__
+
+#include <botan/secmem.h>
+#include <botan/exceptn.h>
+
+namespace Botan {
+
+/**
+* ASN.1 Type and Class Tags
+*/
+enum ASN1_Tag {
+   UNIVERSAL        = 0x00,
+   APPLICATION      = 0x40,
+   CONTEXT_SPECIFIC = 0x80,
+
+   CONSTRUCTED      = 0x20,
+
+   PRIVATE          = CONSTRUCTED | CONTEXT_SPECIFIC,
+
+   EOC              = 0x00,
+   BOOLEAN          = 0x01,
+   INTEGER          = 0x02,
+   BIT_STRING       = 0x03,
+   OCTET_STRING     = 0x04,
+   NULL_TAG         = 0x05,
+   OBJECT_ID        = 0x06,
+   ENUMERATED       = 0x0A,
+   SEQUENCE         = 0x10,
+   SET              = 0x11,
+
+   UTF8_STRING      = 0x0C,
+   NUMERIC_STRING   = 0x12,
+   PRINTABLE_STRING = 0x13,
+   T61_STRING       = 0x14,
+   IA5_STRING       = 0x16,
+   VISIBLE_STRING   = 0x1A,
+   BMP_STRING       = 0x1E,
+
+   UTC_TIME         = 0x17,
+   GENERALIZED_TIME = 0x18,
+
+   NO_OBJECT        = 0xFF00,
+   DIRECTORY_STRING = 0xFF01
+};
+
+/**
+* Basic ASN.1 Object Interface
+*/
+class BOTAN_DLL ASN1_Object
+   {
+   public:
+      /**
+      * Encode whatever this object is into to
+      * @param to the DER_Encoder that will be written to
+      */
+      virtual void encode_into(class DER_Encoder& to) const = 0;
+
+      /**
+      * Decode whatever this object is from from
+      * @param from the BER_Decoder that will be read from
+      */
+      virtual void decode_from(class BER_Decoder& from) = 0;
+
+      virtual ~ASN1_Object() {}
+   };
+
+/**
+* BER Encoded Object
+*/
+class BOTAN_DLL BER_Object
+   {
+   public:
+      void assert_is_a(ASN1_Tag, ASN1_Tag);
+
+      ASN1_Tag type_tag, class_tag;
+      secure_vector<byte> value;
+   };
+
+/*
+* ASN.1 Utility Functions
+*/
+class DataSource;
+
+namespace ASN1 {
+
+std::vector<byte> put_in_sequence(const std::vector<byte>& val);
+std::string to_string(const BER_Object& obj);
+
+/**
+* Heuristics tests; is this object possibly BER?
+* @param src a data source that will be peeked at but not modified
+*/
+bool maybe_BER(DataSource& src);
+
+}
+
+/**
+* General BER Decoding Error Exception
+*/
+struct BOTAN_DLL BER_Decoding_Error : public Decoding_Error
+   {
+   BER_Decoding_Error(const std::string&);
+   };
+
+/**
+* Exception For Incorrect BER Taggings
+*/
+struct BOTAN_DLL BER_Bad_Tag : public BER_Decoding_Error
+   {
+   BER_Bad_Tag(const std::string& msg, ASN1_Tag tag);
+   BER_Bad_Tag(const std::string& msg, ASN1_Tag tag1, ASN1_Tag tag2);
+   };
+
+}
+
+#endif