Move lib into src

1 files changed, 260 insertions, 0 deletions

diff --git a/src/lib/asn1/ber_dec.h b/src/lib/asn1/ber_dec.h
new file mode 100644
index 000000000..ebfa91c85
--- /dev/null
+++ b/src/lib/asn1/ber_dec.h
@@ -0,0 +1,260 @@
+/*
+* BER Decoder
+* (C) 1999-2010 Jack Lloyd
+*
+* Distributed under the terms of the Botan license
+*/
+
+#ifndef BOTAN_BER_DECODER_H__
+#define BOTAN_BER_DECODER_H__
+
+#include <botan/asn1_oid.h>
+#include <botan/data_src.h>
+
+namespace Botan {
+
+/**
+* BER Decoding Object
+*/
+class BOTAN_DLL BER_Decoder
+   {
+   public:
+      BER_Object get_next_object();
+
+      std::vector<byte> get_next_octet_string();
+
+      void push_back(const BER_Object& obj);
+
+      bool more_items() const;
+      BER_Decoder& verify_end();
+      BER_Decoder& discard_remaining();
+
+      BER_Decoder  start_cons(ASN1_Tag type_tag, ASN1_Tag class_tag = UNIVERSAL);
+      BER_Decoder& end_cons();
+
+      BER_Decoder& get_next(BER_Object& ber);
+
+      BER_Decoder& raw_bytes(secure_vector<byte>& v);
+      BER_Decoder& raw_bytes(std::vector<byte>& v);
+
+      BER_Decoder& decode_null();
+      BER_Decoder& decode(bool& v);
+      BER_Decoder& decode(size_t& v);
+      BER_Decoder& decode(class BigInt& v);
+      BER_Decoder& decode(std::vector<byte>& v, ASN1_Tag type_tag);
+      BER_Decoder& decode(secure_vector<byte>& v, ASN1_Tag type_tag);
+
+      BER_Decoder& decode(bool& v,
+                          ASN1_Tag type_tag,
+                          ASN1_Tag class_tag = CONTEXT_SPECIFIC);
+
+      BER_Decoder& decode(size_t& v,
+                          ASN1_Tag type_tag,
+                          ASN1_Tag class_tag = CONTEXT_SPECIFIC);
+
+      BER_Decoder& decode(class BigInt& v,
+                          ASN1_Tag type_tag,
+                          ASN1_Tag class_tag = CONTEXT_SPECIFIC);
+
+      BER_Decoder& decode(std::vector<byte>& v,
+                          ASN1_Tag real_type,
+                          ASN1_Tag type_tag,
+                          ASN1_Tag class_tag = CONTEXT_SPECIFIC);
+
+      BER_Decoder& decode(secure_vector<byte>& v,
+                          ASN1_Tag real_type,
+                          ASN1_Tag type_tag,
+                          ASN1_Tag class_tag = CONTEXT_SPECIFIC);
+
+      BER_Decoder& decode(class ASN1_Object& obj,
+                          ASN1_Tag type_tag = NO_OBJECT,
+                          ASN1_Tag class_tag = NO_OBJECT);
+
+      BER_Decoder& decode_octet_string_bigint(class BigInt& b);
+
+      u64bit decode_constrained_integer(ASN1_Tag type_tag,
+                                        ASN1_Tag class_tag,
+                                        size_t T_bytes);
+
+      template<typename T> BER_Decoder& decode_integer_type(T& out)
+         {
+         return decode_integer_type<T>(out, INTEGER, UNIVERSAL);
+         }
+
+      template<typename T>
+         BER_Decoder& decode_integer_type(T& out,
+                                          ASN1_Tag type_tag,
+                                          ASN1_Tag class_tag = CONTEXT_SPECIFIC)
+         {
+         out = decode_constrained_integer(type_tag, class_tag, sizeof(out));
+         return (*this);
+         }
+
+      template<typename T>
+         BER_Decoder& decode_optional(T& out,
+                                      ASN1_Tag type_tag,
+                                      ASN1_Tag class_tag,
+                                      const T& default_value = T());
+
+      template<typename T>
+         BER_Decoder& decode_optional_implicit(
+            T& out,
+            ASN1_Tag type_tag,
+            ASN1_Tag class_tag,
+            ASN1_Tag real_type,
+            ASN1_Tag real_class,
+            const T& default_value = T());
+
+      template<typename T>
+         BER_Decoder& decode_list(std::vector<T>& out,
+                                  ASN1_Tag type_tag = SEQUENCE,
+                                  ASN1_Tag class_tag = UNIVERSAL);
+
+      template<typename T>
+         BER_Decoder& decode_and_check(const T& expected,
+                                       const std::string& error_msg)
+         {
+         T actual;
+         decode(actual);
+
+         if(actual != expected)
+            throw Decoding_Error(error_msg);
+
+         return (*this);
+         }
+
+      /*
+      * Decode an OPTIONAL string type
+      */
+      template<typename Alloc>
+      BER_Decoder& decode_optional_string(std::vector<byte, Alloc>& out,
+                                          ASN1_Tag real_type,
+                                          u16bit type_no,
+                                          ASN1_Tag class_tag = CONTEXT_SPECIFIC)
+         {
+         BER_Object obj = get_next_object();
+
+         ASN1_Tag type_tag = static_cast<ASN1_Tag>(type_no);
+
+         if(obj.type_tag == type_tag && obj.class_tag == class_tag)
+            {
+            if((class_tag & CONSTRUCTED) && (class_tag & CONTEXT_SPECIFIC))
+               BER_Decoder(obj.value).decode(out, real_type).verify_end();
+            else
+               {
+               push_back(obj);
+               decode(out, real_type, type_tag, class_tag);
+               }
+            }
+         else
+            {
+            out.clear();
+            push_back(obj);
+            }
+
+         return (*this);
+         }
+
+      BER_Decoder& operator=(const BER_Decoder&) = delete;
+
+      BER_Decoder(DataSource&);
+
+      BER_Decoder(const byte[], size_t);
+
+      BER_Decoder(const secure_vector<byte>&);
+
+      BER_Decoder(const std::vector<byte>& vec);
+
+      BER_Decoder(const BER_Decoder&);
+      ~BER_Decoder();
+   private:
+      BER_Decoder* parent;
+      DataSource* source;
+      BER_Object pushed;
+      mutable bool owns;
+   };
+
+/*
+* Decode an OPTIONAL or DEFAULT element
+*/
+template<typename T>
+BER_Decoder& BER_Decoder::decode_optional(T& out,
+                                          ASN1_Tag type_tag,
+                                          ASN1_Tag class_tag,
+                                          const T& default_value)
+   {
+   BER_Object obj = get_next_object();
+
+   if(obj.type_tag == type_tag && obj.class_tag == class_tag)
+      {
+      if((class_tag & CONSTRUCTED) && (class_tag & CONTEXT_SPECIFIC))
+         BER_Decoder(obj.value).decode(out).verify_end();
+      else
+         {
+         push_back(obj);
+         decode(out, type_tag, class_tag);
+         }
+      }
+   else
+      {
+      out = default_value;
+      push_back(obj);
+      }
+
+   return (*this);
+   }
+
+/*
+* Decode an OPTIONAL or DEFAULT element
+*/
+template<typename T>
+BER_Decoder& BER_Decoder::decode_optional_implicit(
+   T& out,
+   ASN1_Tag type_tag,
+   ASN1_Tag class_tag,
+   ASN1_Tag real_type,
+   ASN1_Tag real_class,
+   const T& default_value)
+   {
+   BER_Object obj = get_next_object();
+
+   if(obj.type_tag == type_tag && obj.class_tag == class_tag)
+      {
+      obj.type_tag = real_type;
+      obj.class_tag = real_class;
+      push_back(obj);
+      decode(out, real_type, real_class);
+      }
+   else
+      {
+      out = default_value;
+      push_back(obj);
+      }
+
+   return (*this);
+   }
+/*
+* Decode a list of homogenously typed values
+*/
+template<typename T>
+BER_Decoder& BER_Decoder::decode_list(std::vector<T>& vec,
+                                      ASN1_Tag type_tag,
+                                      ASN1_Tag class_tag)
+   {
+   BER_Decoder list = start_cons(type_tag, class_tag);
+
+   while(list.more_items())
+      {
+      T value;
+      list.decode(value);
+      vec.push_back(value);
+      }
+
+   list.end_cons();
+
+   return (*this);
+   }
+
+}
+
+#endif