Give all Filter objects a method for querying their name

16 files changed, 64 insertions, 5 deletions

diff --git a/src/cms/cms_algo.cpp b/src/cms/cms_algo.cpp
index 748aa73da..686a79b4e 100644
--- a/src/cms/cms_algo.cpp
+++ b/src/cms/cms_algo.cpp
@@ -31,6 +31,8 @@ SecureVector<byte> do_rfc3217_wrap(RandomNumberGenerator& rng,
    class Flip_Bytes : public Filter
       {
       public:
+         std::string name() const { return "Fip_Bytes"; }
+
          void write(const byte data[], u32bit length)
             {
             buf.append(data, length);
diff --git a/src/filters/base64/base64.h b/src/filters/base64/base64.h
index aca02da14..0f35859cc 100644
--- a/src/filters/base64/base64.h
+++ b/src/filters/base64/base64.h
@@ -20,6 +20,8 @@ class BOTAN_DLL Base64_Encoder : public Filter
    public:
       static void encode(const byte in[3], byte out[4]);
 
+      std::string name() const { return "Base64_Encoder"; }
+
       /**
       * Input a part of a message to the encoder.
       * @param input the message to input as a byte array
@@ -61,6 +63,8 @@ class BOTAN_DLL Base64_Decoder : public Filter
 
       static bool is_valid(byte);
 
+      std::string name() const { return "Base64_Decoder"; }
+
       /**
       * Input a part of a message to the decoder.
       * @param input the message to input as a byte array
diff --git a/src/filters/basefilt.cpp b/src/filters/basefilt.cpp
index 124c0a887..008d04b02 100644
--- a/src/filters/basefilt.cpp
+++ b/src/filters/basefilt.cpp
@@ -39,6 +39,11 @@ Chain::Chain(Filter* filters[], u32bit count)
          }
    }
 
+std::string Chain::name() const
+   {
+   return "Chain";
+   }
+
 /*
 * Fork Constructor
 */
@@ -56,4 +61,9 @@ Fork::Fork(Filter* filters[], u32bit count)
    set_next(filters, count);
    }
 
+std::string Fork::name() const
+   {
+   return "Fork";
+   }
+
 }
diff --git a/src/filters/basefilt.h b/src/filters/basefilt.h
index 81e897bc4..a5c3dcd41 100644
--- a/src/filters/basefilt.h
+++ b/src/filters/basefilt.h
@@ -18,6 +18,8 @@ namespace Botan {
 struct BOTAN_DLL BitBucket : public Filter
    {
    void write(const byte[], u32bit) {}
+
+   std::string name() const { return "BitBucket"; }
    };
 
 /**
@@ -31,6 +33,8 @@ class BOTAN_DLL Chain : public Fanout_Filter
    public:
       void write(const byte input[], u32bit length) { send(input, length); }
 
+      std::string name() const;
+
       /**
       * Construct a chain of up to four filters. The filters are set
       * up in the same order as the arguments.
@@ -56,6 +60,8 @@ class BOTAN_DLL Fork : public Fanout_Filter
       void write(const byte input[], u32bit length) { send(input, length); }
       void set_port(u32bit n) { Fanout_Filter::set_port(n); }
 
+      std::string name() const;
+
       /**
       * Construct a Fork filter with up to four forks.
       */
diff --git a/src/filters/buf_filt.h b/src/filters/buf_filt.h
index 3acf1f809..1f5d7dae8 100644
--- a/src/filters/buf_filt.h
+++ b/src/filters/buf_filt.h
@@ -26,11 +26,6 @@ class BOTAN_DLL Buffered_Filter
 
       virtual ~Buffered_Filter() {}
    protected:
-      /**
-      * @return name of this filter object
-      */
-      virtual std::string name() const = 0;
-
       virtual void buffered_block(const byte input[], u32bit length) = 0;
       virtual void buffered_final(const byte input[], u32bit length) = 0;
 
diff --git a/src/filters/bzip2/bzip2.h b/src/filters/bzip2/bzip2.h
index 3b40dbe40..aacec8fa9 100644
--- a/src/filters/bzip2/bzip2.h
+++ b/src/filters/bzip2/bzip2.h
@@ -19,6 +19,8 @@ namespace Botan {
 class BOTAN_DLL Bzip_Compression : public Filter
    {
    public:
+      std::string name() const { return "Bzip_Compression"; }
+
       void write(const byte input[], u32bit length);
       void start_msg();
       void end_msg();
@@ -41,6 +43,8 @@ class BOTAN_DLL Bzip_Compression : public Filter
 class BOTAN_DLL Bzip_Decompression : public Filter
    {
    public:
+      std::string name() const { return "Bzip_Decompression"; }
+
       void write(const byte input[], u32bit length);
       void start_msg();
       void end_msg();
diff --git a/src/filters/filter.h b/src/filters/filter.h
index 62c67b922..d5aa9725b 100644
--- a/src/filters/filter.h
+++ b/src/filters/filter.h
@@ -19,6 +19,10 @@ namespace Botan {
 class BOTAN_DLL Filter
    {
    public:
+      /**
+      * @return descriptive name for this filter
+      */
+      virtual std::string name() const = 0;
 
       /**
       * Write a portion of a message to this filter.
diff --git a/src/filters/filters.h b/src/filters/filters.h
index 5953518d3..e2c7cb5ec 100644
--- a/src/filters/filters.h
+++ b/src/filters/filters.h
@@ -37,6 +37,8 @@ class BOTAN_DLL StreamCipher_Filter : public Keyed_Filter
    {
    public:
 
+      std::string name() const { return cipher->name(); }
+
       /**
       * Write input data
       * @param input data
@@ -108,6 +110,8 @@ class BOTAN_DLL Hash_Filter : public Filter
       void write(const byte input[], u32bit len) { hash->update(input, len); }
       void end_msg();
 
+      std::string name() const { return hash->name(); }
+
       /**
       * Construct a hash filter.
       * @param hash_fun the hash function to use
@@ -144,6 +148,8 @@ class BOTAN_DLL MAC_Filter : public Keyed_Filter
       void write(const byte input[], u32bit len) { mac->update(input, len); }
       void end_msg();
 
+      std::string name() const { return mac->name(); }
+
       /**
       * Set the key of this filter.
       * @param key the key to set
diff --git a/src/filters/hex/hex.h b/src/filters/hex/hex.h
index b03b933bc..6698a61be 100644
--- a/src/filters/hex/hex.h
+++ b/src/filters/hex/hex.h
@@ -28,6 +28,8 @@ class BOTAN_DLL Hex_Encoder : public Filter
       */
       static void encode(byte in, byte out[2], Case the_case = Uppercase);
 
+      std::string name() const { return "Hex_Encoder"; }
+
       void write(const byte in[], u32bit length);
       void end_msg();
 
@@ -77,6 +79,8 @@ class BOTAN_DLL Hex_Decoder : public Filter
       */
       static bool is_valid(byte c);
 
+      std::string name() const { return "Hex_Decoder"; }
+
       void write(const byte[], u32bit);
       void end_msg();
 
diff --git a/src/filters/pipe.cpp b/src/filters/pipe.cpp
index 77e4ae283..22718cd8c 100644
--- a/src/filters/pipe.cpp
+++ b/src/filters/pipe.cpp
@@ -22,6 +22,8 @@ class Null_Filter : public Filter
    public:
       void write(const byte input[], u32bit length)
          { send(input, length); }
+
+      std::string name() const { return "Null"; }
    };
 
 }
diff --git a/src/filters/secqueue.h b/src/filters/secqueue.h
index 3cb486024..483a31d60 100644
--- a/src/filters/secqueue.h
+++ b/src/filters/secqueue.h
@@ -19,6 +19,8 @@ namespace Botan {
 class BOTAN_DLL SecureQueue : public Fanout_Filter, public DataSource
    {
    public:
+      std::string name() const { return "Queue"; }
+
       void write(const byte[], u32bit);
 
       u32bit read(byte[], u32bit);
diff --git a/src/filters/zlib/zlib.h b/src/filters/zlib/zlib.h
index 2aa83aadf..e1645e1ee 100644
--- a/src/filters/zlib/zlib.h
+++ b/src/filters/zlib/zlib.h
@@ -19,6 +19,8 @@ namespace Botan {
 class BOTAN_DLL Zlib_Compression : public Filter
    {
    public:
+      std::string name() const { return "Zlib_Compression"; }
+
       void write(const byte input[], u32bit length);
       void start_msg();
       void end_msg();
@@ -48,6 +50,8 @@ class BOTAN_DLL Zlib_Compression : public Filter
 class BOTAN_DLL Zlib_Decompression : public Filter
    {
    public:
+      std::string name() const { return "Zlib_Decompression"; }
+
       void write(const byte input[], u32bit length);
       void start_msg();
       void end_msg();
diff --git a/src/pbe/pbes1/pbes1.cpp b/src/pbe/pbes1/pbes1.cpp
index a3e08d679..6e4c3f54d 100644
--- a/src/pbe/pbes1/pbes1.cpp
+++ b/src/pbe/pbes1/pbes1.cpp
@@ -153,6 +153,12 @@ OID PBE_PKCS5v15::get_oid() const
       throw Internal_Error("PBE-PKCS5 v1.5: get_oid() has run out of options");
    }
 
+std::string PBE_PKCS5v15::name() const
+   {
+   return "PBE-PKCS5v15(" + block_cipher->name() + "," +
+                            hash_function->name() + ")";
+   }
+
 /*
 * PKCS#5 v1.5 PBE Constructor
 */
diff --git a/src/pbe/pbes1/pbes1.h b/src/pbe/pbes1/pbes1.h
index d50c01f53..dcce38e24 100644
--- a/src/pbe/pbes1/pbes1.h
+++ b/src/pbe/pbes1/pbes1.h
@@ -21,6 +21,8 @@ namespace Botan {
 class BOTAN_DLL PBE_PKCS5v15 : public PBE
    {
    public:
+      std::string name() const;
+
       void write(const byte[], u32bit);
       void start_msg();
       void end_msg();
diff --git a/src/pbe/pbes2/pbes2.cpp b/src/pbe/pbes2/pbes2.cpp
index 1ac16af8d..5b77acff5 100644
--- a/src/pbe/pbes2/pbes2.cpp
+++ b/src/pbe/pbes2/pbes2.cpp
@@ -207,6 +207,12 @@ bool PBE_PKCS5v20::known_cipher(const std::string& algo)
    return false;
    }
 
+std::string PBE_PKCS5v20::name() const
+   {
+   return "PBE-PKCS5v20(" + block_cipher->name() + "," +
+                            hash_function->name() + ")";
+   }
+
 /*
 * PKCS#5 v2.0 PBE Constructor
 */
diff --git a/src/pbe/pbes2/pbes2.h b/src/pbe/pbes2/pbes2.h
index f24d572d0..4a021840a 100644
--- a/src/pbe/pbes2/pbes2.h
+++ b/src/pbe/pbes2/pbes2.h
@@ -27,6 +27,8 @@ class BOTAN_DLL PBE_PKCS5v20 : public PBE
       */
       static bool known_cipher(const std::string& cipher);
 
+      std::string name() const;
+
       void write(const byte[], u32bit);
       void start_msg();
       void end_msg();