monotone (1.0-6) 04-botan-1.10-adaption.diff

Description: allow monotone to be built and linked against botan 1.10.x
Origin: upstream, branch net.venge.monotone.issue-182
--- a/src/database.cc
+++ b/src/database.cc
@@ -3425,9 +3425,8 @@
   rsa_pub_key pub;
   get_key(pub_id, pub);
 
-  SecureVector<Botan::byte> pub_block;
-  pub_block.set(reinterpret_cast<Botan::byte const *>(pub().data()),
-                pub().size());
+  SecureVector<Botan::byte> pub_block
+    (reinterpret_cast<Botan::byte const *>(pub().data()), pub().size());
 
   shared_ptr<X509_PublicKey> x509_key(Botan::X509::load_key(pub_block));
   shared_ptr<RSA_PublicKey> pub_key
@@ -3471,14 +3470,13 @@
   else
     {
       rsa_pub_key pub;
-      SecureVector<Botan::byte> pub_block;
 
       if (!public_key_exists(id))
         return cert_unknown;
 
       get_key(id, pub);
-      pub_block.set(reinterpret_cast<Botan::byte const *>(pub().data()),
-                    pub().size());
+      SecureVector<Botan::byte> pub_block
+        (reinterpret_cast<Botan::byte const *>(pub().data()), pub().size());
 
       L(FL("building verifier for %d-byte pub key") % pub_block.size());
       shared_ptr<X509_PublicKey> x509_key(Botan::X509::load_key(pub_block));
--- a/src/gzip.cc
+++ b/src/gzip.cc
@@ -110,7 +110,7 @@
    if(deflateInit2(&(zlib->stream), level, Z_DEFLATED, -15, 8, Z_DEFAULT_STRATEGY) != Z_OK)
       {
       delete zlib; zlib = 0;
-      throw Exception("Gzip_Compression: Memory allocation error");
+      throw Memory_Exhaustion();
       }
    }
 
@@ -137,7 +137,7 @@
 /*************************************************
 * Compress Input with Gzip                       *
 *************************************************/
-void Gzip_Compression::write(const byte input[], u32bit length)
+void Gzip_Compression::write(const byte input[], filter_length_t length)
    {
 
    count += length;
@@ -152,7 +152,7 @@
       zlib->stream.avail_out = buffer.size();
       int rc = deflate(&(zlib->stream), Z_NO_FLUSH);
       if (rc != Z_OK && rc != Z_STREAM_END)
-         throw Exception("Internal error in Gzip_Compression deflate.");
+         throw Invalid_State("Internal error in Gzip_Compression deflate.");
       send(buffer.begin(), buffer.size() - zlib->stream.avail_out);
       }
    }
@@ -172,7 +172,7 @@
       zlib->stream.avail_out = buffer.size();
       rc = deflate(&(zlib->stream), Z_FINISH);
       if (rc != Z_OK && rc != Z_STREAM_END)
-         throw Exception("Internal error in Gzip_Compression finishing deflate.");
+         throw Invalid_State("Internal error in Gzip_Compression finishing deflate.");
       send(buffer.begin(), buffer.size() - zlib->stream.avail_out);
       }
 
@@ -228,7 +228,7 @@
    no_writes(true), pipe(new Hash_Filter("CRC32")), footer(0)
    {
    if (DEFAULT_BUFFERSIZE < sizeof(GZIP::GZIP_HEADER))
-      throw Exception("DEFAULT_BUFFERSIZE is too small");
+      throw Decoding_Error("DEFAULT_BUFFERSIZE is too small");
 
    zlib = new Zlib_Stream;
 
@@ -237,7 +237,7 @@
    if(inflateInit2(&(zlib->stream), -15) != Z_OK)
       {
       delete zlib; zlib = 0;
-      throw Exception("Gzip_Decompression: Memory allocation error");
+      throw Memory_Exhaustion();
       }
    }
 
@@ -256,7 +256,7 @@
 void Gzip_Decompression::start_msg()
    {
    if (!no_writes)
-      throw Exception("Gzip_Decompression: start_msg after already writing");
+      throw Decoding_Error("Gzip_Decompression: start_msg after already writing");
 
    pipe.start_msg();
    datacount = 0;
@@ -267,7 +267,7 @@
 /*************************************************
 * Decompress Input with Gzip                     *
 *************************************************/
-void Gzip_Decompression::write(const byte input[], u32bit length)
+void Gzip_Decompression::write(const byte input[], filter_length_t length)
    {
    if(length) no_writes = false;
 
@@ -277,15 +277,16 @@
          u32bit eat_len = eat_footer(input, length);
          input += eat_len;
          length -= eat_len;
-         if (length == 0)
-            return;
       }
 
+   if (length == 0)
+     return;
+
    // Check the gzip header
    if (pos < sizeof(GZIP::GZIP_HEADER))
       {
-      u32bit len = std::min((u32bit)sizeof(GZIP::GZIP_HEADER)-pos, length);
-      u32bit cmplen = len;
+      filter_length_t len = std::min((filter_length_t)sizeof(GZIP::GZIP_HEADER)-pos, length);
+      filter_length_t cmplen = len;
       // The last byte is the OS flag - we don't care about that
       if (pos + len - 1 >= GZIP::HEADER_POS_OS)
          cmplen--;
@@ -317,8 +318,8 @@
          if(rc == Z_NEED_DICT)
             throw Decoding_Error("Gzip_Decompression: Need preset dictionary");
          if(rc == Z_MEM_ERROR)
-            throw Exception("Gzip_Decompression: Memory allocation error");
-         throw Exception("Gzip_Decompression: Unknown decompress error");
+            throw Memory_Exhaustion();
+         throw Decoding_Error("Gzip_Decompression: Unknown decompress error");
          }
       send(buffer.begin(), buffer.size() - zlib->stream.avail_out);
       pipe.write(buffer.begin(), buffer.size() - zlib->stream.avail_out);
@@ -346,8 +347,14 @@
       if (footer.size() >= GZIP::FOOTER_LENGTH)
          throw Decoding_Error("Gzip_Decompression: Data integrity error in footer");
 
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,11)
+      size_t eat_len = std::min(GZIP::FOOTER_LENGTH-footer.size(),
+                                static_cast<size_t>(length));
+      footer += std::make_pair(input, eat_len);
+#else
       u32bit eat_len = std::min(GZIP::FOOTER_LENGTH-footer.size(), length);
       footer.append(input, eat_len);
+#endif
 
       if (footer.size() == GZIP::FOOTER_LENGTH)
          {
@@ -364,7 +371,7 @@
 void Gzip_Decompression::check_footer()
    {
    if (footer.size() != GZIP::FOOTER_LENGTH)
-      throw Exception("Gzip_Decompression: Error finalizing decompression");
+      throw Decoding_Error("Gzip_Decompression: Error finalizing decompression");
 
    pipe.end_msg();
 
@@ -377,7 +384,12 @@
   for (int i = 0; i < 4; i++)
      buf[3-i] = tmpbuf[i];
 
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,11)
+  tmpbuf.resize(4);
+  tmpbuf.copy(footer.begin(), 4);
+#else
   tmpbuf.set(footer.begin(), 4);
+#endif
   if (buf != tmpbuf)
       throw Decoding_Error("Gzip_Decompression: Data integrity error - CRC32 error");
 
@@ -400,7 +412,7 @@
    // read, clear() will reset no_writes
    if(no_writes) return;
 
-   throw Exception("Gzip_Decompression: didn't find footer");
+   throw Decoding_Error("Gzip_Decompression: didn't find footer");
 
    }
 
@@ -412,7 +424,11 @@
    no_writes = true;
    inflateReset(&(zlib->stream));
 
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,11)
+   footer.clear();
+#else
    footer.destroy();
+#endif
    pos = 0;
    datacount = 0;
    }
--- a/src/gzip.hh
+++ b/src/gzip.hh
@@ -7,11 +7,18 @@
 #ifndef BOTAN_EXT_GZIP_H__
 #define BOTAN_EXT_GZIP_H__
 
+#include <botan/version.h>
 #include <botan/filter.h>
 #include <botan/pipe.h>
 
 namespace Botan {
 
+#if BOTAN_VERSION_CODE < BOTAN_VERSION_CODE_FOR(1,9,4)
+// Only 1.9.4 and newer export the Memory_Exception. Give this gzip
+// implementation something compatible to work with.
+typedef std::bad_alloc Memory_Exhaustion;
+#endif
+
 namespace GZIP {
 
    /* A basic header - we only need to set the IDs and compression method */
@@ -30,13 +37,19 @@
 
 }
 
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,11)
+typedef size_t filter_length_t;
+#else
+typedef u32bit filter_length_t;
+#endif
+
 /*************************************************
 * Gzip Compression Filter                        *
 *************************************************/
 class Gzip_Compression : public Filter
    {
    public:
-      void write(const byte input[], u32bit length);
+      void write(const byte input[], filter_length_t length);
       void start_msg();
       void end_msg();
       std::string name() const { return "Gzip_Compression"; }
@@ -60,7 +73,7 @@
 class Gzip_Decompression : public Filter
    {
    public:
-      void write(const byte input[], u32bit length);
+      void write(const byte input[], filter_length_t length);
       void start_msg();
       void end_msg();
       std::string name() const { return "Gzip_Decompression"; }
--- a/src/key_packet.cc
+++ b/src/key_packet.cc
@@ -106,8 +106,8 @@
     void validate_public_key_data(string const & name, string const & keydata) const
     {
       string decoded = decode_base64_as<string>(keydata, origin::user);
-      Botan::SecureVector<Botan::byte> key_block;
-      key_block.set(reinterpret_cast<Botan::byte const *>(decoded.c_str()), decoded.size());
+      Botan::SecureVector<Botan::byte> key_block
+        (reinterpret_cast<Botan::byte const *>(decoded.c_str()), decoded.size());
       try
         {
           Botan::X509::load_key(key_block);
--- a/src/key_store.cc
+++ b/src/key_store.cc
@@ -572,13 +572,21 @@
   try // with empty passphrase
     {
       Botan::DataSource_Memory ds(kp.priv());
-#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,7,7)
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,11)
+      pkcs8_key.reset(Botan::PKCS8::load_key(ds, lazy_rng::get(), Dummy_UI()));
+#elif BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,7,7)
       pkcs8_key.reset(Botan::PKCS8::load_key(ds, lazy_rng::get(), ""));
 #else
       pkcs8_key.reset(Botan::PKCS8::load_key(ds, ""));
 #endif
     }
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,11)
+  catch (Passphrase_Required & e)
+#elif BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,4)
+  catch (Botan::Invalid_Argument & e)
+#else
   catch (Botan::Exception & e)
+#endif
     {
       L(FL("failed to load key with no passphrase: %s") % e.what());
 
@@ -605,13 +613,18 @@
           {
             Botan::DataSource_Memory ds(kp.priv());
 #if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,7,7)
-            pkcs8_key.reset(Botan::PKCS8::load_key(ds, lazy_rng::get(), phrase()));
+            pkcs8_key.reset(Botan::PKCS8::load_key(ds, lazy_rng::get(),
+                                                   phrase()));
 #else
             pkcs8_key.reset(Botan::PKCS8::load_key(ds, phrase()));
 #endif
             break;
           }
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,4)
+        catch (Botan::Invalid_Argument)
+#else
         catch (Botan::Exception & e)
+#endif
           {
             cycles++;
             L(FL("decrypt_private_key: failure %d to load encrypted key: %s")
@@ -822,10 +835,14 @@
       plaintext = string(reinterpret_cast<char const*>(plain.begin()),
                          plain.size());
     }
-  catch (Botan::Exception & ex)
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,4)
+  catch (std::exception & e)
+#else
+  catch (Botan::Exception & e)
+#endif
     {
       E(false, ciphertext.made_from,
-        F("Botan error decrypting data: '%s'") % ex.what());
+        F("Botan error decrypting data: '%s'") % e.what());
     }
 }
 
@@ -856,9 +873,9 @@
     {
       if (agent.connected()) {
         //grab the monotone public key as an RSA_PublicKey
-        SecureVector<Botan::byte> pub_block;
-        pub_block.set(reinterpret_cast<Botan::byte const *>(key.pub().data()),
-                      key.pub().size());
+        SecureVector<Botan::byte> pub_block
+          (reinterpret_cast<Botan::byte const *>(key.pub().data()),
+           key.pub().size());
         L(FL("make_signature: building %d-byte pub key") % pub_block.size());
         shared_ptr<X509_PublicKey> x509_key =
           shared_ptr<X509_PublicKey>(Botan::X509::load_key(pub_block));
@@ -1031,8 +1048,14 @@
   for (;;)
     try
       {
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,11)
+        arc4_key.resize(phrase().size());
+        arc4_key.copy(reinterpret_cast<Botan::byte const *>(phrase().data()),
+                      phrase().size());
+#else
         arc4_key.set(reinterpret_cast<Botan::byte const *>(phrase().data()),
                      phrase().size());
+#endif
 
         Pipe arc4_decryptor(get_cipher("ARC4", arc4_key, Botan::DECRYPTION));
 
@@ -1051,7 +1074,11 @@
 #endif
         break;
       }
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,4)
+    catch (Botan::Invalid_Argument & e)
+#else
     catch (Botan::Exception & e)
+#endif
       {
         L(FL("migrate_old_key_pair: failure %d to load old private key: %s")
           % cycles % e.what());
--- a/src/monotone.cc
+++ b/src/monotone.cc
@@ -156,27 +156,53 @@
       E(linked_botan_version != BOTAN_VERSION_CODE_FOR(1,7,14), origin::system,
         F("monotone does not support Botan 1.7.14"));
 
-#if BOTAN_VERSION_CODE <= BOTAN_VERSION_CODE_FOR(1,7,6)
+      // In Botan 1.9.9, the DataSink_Stream cannot be instantiated per
+      // se. As 1.10.1 is already out, let's simply disable support for
+      // that specific (testing) version of botan.
+      E(linked_botan_version != BOTAN_VERSION_CODE_FOR(1,9,9), origin::system,
+        F("monotone does not support Botan 1.9.9"));
+
+#if BOTAN_VERSION_CODE < BOTAN_VERSION_CODE_FOR(1,7,7)
+      // motonote binary compiled against botan younger than 1.7.7
       E(linked_botan_version >= BOTAN_VERSION_CODE_FOR(1,6,3), origin::system,
         F("this monotone binary requires Botan 1.6.3 or newer"));
-      E(linked_botan_version <= BOTAN_VERSION_CODE_FOR(1,7,6), origin::system,
-        F("this monotone binary does not work with Botan newer than 1.7.6"));
-#elif BOTAN_VERSION_CODE <= BOTAN_VERSION_CODE_FOR(1,7,22)
-      E(linked_botan_version > BOTAN_VERSION_CODE_FOR(1,7,6), origin::system,
+      E(linked_botan_version < BOTAN_VERSION_CODE_FOR(1,7,7), origin::system,
+        F("this monotone binary does not work with Botan 1.7.7 or newer"));
+
+#elif BOTAN_VERSION_CODE < BOTAN_VERSION_CODE_FOR(1,7,22)
+      // motonote binary compiled against botan 1.7.7 - 1.7.21
+      E(linked_botan_version >= BOTAN_VERSION_CODE_FOR(1,7,7), origin::system,
         F("this monotone binary requires Botan 1.7.7 or newer"));
-      // While compiling against 1.7.22 or newer is recommended, because
-      // it enables new features of Botan, the monotone binary compiled
-      // against Botan 1.7.21 and before should still work with newer Botan
-      // versions, including all of the stable branch 1.8.x.
-      E(linked_botan_version < BOTAN_VERSION_CODE_FOR(1,9,0), origin::system,
-        F("this monotone binary does not work with Botan 1.9.x"));
-#else
-      E(linked_botan_version > BOTAN_VERSION_CODE_FOR(1,7,22), origin::system,
+      // While compiling against 1.7.22 or newer is recommended, because it
+      // enables new features of Botan, the monotone binary compiled against
+      // Botan 1.7.21 and before should still work with newer Botan version,
+      // including all of the stable branch 1.8.x, up to and including
+      // 1.9.3.
+      E(linked_botan_version < BOTAN_VERSION_CODE_FOR(1,9,4), origin::system,
+        F("this monotone binary does not work with Botan 1.9.4 or newer"));
+
+#elif BOTAN_VERSION_CODE < BOTAN_VERSION_CODE_FOR(1,9,4)
+      // motonote binary compiled against botan 1.7.22 - 1.9.3
+      E(linked_botan_version >= BOTAN_VERSION_CODE_FOR(1,7,22), origin::system,
         F("this monotone binary requires Botan 1.7.22 or newer"));
-      E(linked_botan_version < BOTAN_VERSION_CODE_FOR(1,9,0), origin::system,
-        F("this monotone binary does not work with Botan 1.9.x"));
+      E(linked_botan_version < BOTAN_VERSION_CODE_FOR(1,9,4), origin::system,
+        F("this monotone binary does not work with Botan 1.9.4 or newer"));
+
+#elif BOTAN_VERSION_CODE < BOTAN_VERSION_CODE_FOR(1,9,11)
+      // motonote binary compiled against botan 1.9.4 - 1.9.10
+#pragma message ( "The resulting monotone binary won't be able to run with any stable release of botan." )
+      E(linked_botan_version >= BOTAN_VERSION_CODE_FOR(1,9,4), origin::system,
+        F("this monotone binary requires Botan 1.9.4 or newer"));
+      E(linked_botan_version < BOTAN_VERSION_CODE_FOR(1,9,11), origin::system,
+        F("this monotone binary does not work with Botan 1.9.11 or newer"));
+
+#else
+      // motonote binary compiled against botan 1.9.11 and newer
+      E(linked_botan_version >= BOTAN_VERSION_CODE_FOR(1,9,11), origin::system,
+        F("this monotone binary requires Botan 1.9.11 or newer"));
 #endif
 
+
       app_state app;
       try
         {
--- a/src/packet.cc
+++ b/src/packet.cc
@@ -156,8 +156,8 @@
     void validate_public_key_data(string const & name, string const & keydata) const
     {
       string decoded = decode_base64_as<string>(keydata, origin::user);
-      Botan::SecureVector<Botan::byte> key_block;
-      key_block.set(reinterpret_cast<Botan::byte const *>(decoded.c_str()), decoded.size());
+      Botan::SecureVector<Botan::byte> key_block
+        (reinterpret_cast<Botan::byte const *>(decoded.c_str()), decoded.size());
       try
         {
           Botan::X509::load_key(key_block);
@@ -175,7 +175,9 @@
       Botan::DataSource_Memory ds(decoded);
       try
         {
-#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,7,7)
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,11)
+          Botan::PKCS8::load_key(ds, lazy_rng::get(), Dummy_UI());
+#elif BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,7,7)
           Botan::PKCS8::load_key(ds, lazy_rng::get(), string());
 #else
           Botan::PKCS8::load_key(ds, string());
@@ -189,7 +191,11 @@
         }
       // since we do not want to prompt for a password to decode it finally,
       // we ignore all other exceptions
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,11)
+      catch (Passphrase_Required) {}
+#else
       catch (Botan::Invalid_Argument) {}
+#endif
     }
     void validate_certname(string const & cn) const
     {
@@ -460,7 +466,15 @@
   return count;
 }
 
-
+// Dummy User_Interface implementation for Botan
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,11)
+std::string
+Dummy_UI::get_passphrase(const std::string &, const std::string &,
+                         Botan::User_Interface::UI_Result&) const
+{
+  throw Passphrase_Required("Passphrase required");
+}
+#endif
 
 // Local Variables:
 // mode: C++
--- a/src/packet.hh
+++ b/src/packet.hh
@@ -10,6 +10,10 @@
 #ifndef __PACKET_HH__
 #define __PACKET_HH__
 
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,11)
+#include <botan/ui.h>
+#endif
+
 #include "vocab.hh"
 
 struct cert;
@@ -84,6 +88,21 @@
 
 size_t read_packets(std::istream & in, packet_consumer & cons);
 
+#if BOTAN_VERSION_CODE >= BOTAN_VERSION_CODE_FOR(1,9,11)
+// A helper class implementing Botan::User_Interface - which doesn't really
+// interface with the user, but provides the necessary plumbing for Botan.
+//
+// See Botan commit 2d09d7d0cd4bd0e7155d001dd65a4f29103b158c
+typedef std::runtime_error Passphrase_Required;
+
+class Dummy_UI : public Botan::User_Interface
+{
+public:
+  virtual std::string get_passphrase(const std::string &, const std::string &,
+                                     Botan::User_Interface::UI_Result &) const;
+};
+#endif
+
 #endif
 
 // Local Variables:
--- a/src/sha1.cc
+++ b/src/sha1.cc
@@ -50,9 +50,12 @@
   Botan::Default_Benchmark_Timer timer;
   std::map<std::string, double> results =
     Botan::algorithm_benchmark("SHA-1",  milliseconds, timer, rng, af);
-#else
+#elif BOTAN_VERSION_CODE < BOTAN_VERSION_CODE_FOR(1,9,11)
   std::map<std::string, double> results =
     Botan::algorithm_benchmark("SHA-1",  milliseconds, rng, af);
+#else
+  std::map<std::string, double> results =
+    Botan::algorithm_benchmark("SHA-1",  af, rng, milliseconds, 16);
 #endif
 
   for(std::map<std::string, double>::const_iterator i = results.begin();
--- a/src/ssh_agent.cc
+++ b/src/ssh_agent.cc
@@ -385,9 +385,9 @@
 ssh_agent::has_key(const keypair & key)
 {
   //grab the monotone public key as an RSA_PublicKey
-  SecureVector<Botan::byte> pub_block;
-  pub_block.set(reinterpret_cast<Botan::byte const *>((key.pub)().data()),
-                (key.pub)().size());
+  SecureVector<Botan::byte> pub_block
+    (reinterpret_cast<Botan::byte const *>((key.pub)().data()),
+     (key.pub)().size());
   L(FL("has_key: building %d-byte pub key") % pub_block.size());
   shared_ptr<X509_PublicKey> x509_key =
     shared_ptr<X509_PublicKey>(Botan::X509::load_key(pub_block));
--- a/src/transforms.cc
+++ b/src/transforms.cc
@@ -53,15 +53,16 @@
 // paradigm "must" be used. this program is intended for source code
 // control and I make no bones about it.
 
-NORETURN(static inline void error_in_transform(Botan::Exception & e));
+NORETURN(static inline void error_in_transform(std::exception & e));
 
 static inline void
-error_in_transform(Botan::Exception & e, origin::type caused_by)
+error_in_transform(std::exception & e, origin::type caused_by)
 {
   // these classes can all indicate data corruption
   if (typeid(e) == typeid(Botan::Encoding_Error)
       || typeid(e) == typeid(Botan::Decoding_Error)
       || typeid(e) == typeid(Botan::Stream_IO_Error)
+      || typeid(e) == typeid(Botan::Invalid_Argument)
       || typeid(e) == typeid(Botan::Integrity_Failure))
     {
       // clean up the what() string a little: throw away the
@@ -107,7 +108,7 @@
         pipe->process_msg(in);                                  \
         out = pipe->read_all_as_string(Pipe::LAST_MESSAGE);     \
       }                                                         \
-    catch (Botan::Exception & e)                                \
+    catch (std::exception & e)                                   \
       {                                                         \
         pipe.reset(new Pipe(new T(carg)));                      \
         error_in_transform(e, made_from);                       \
@@ -173,7 +174,7 @@
             {
               throw Botan::Decoding_Error(string("invalid hex character '") + (char)c + "'");
             }
-          catch(Botan::Exception & e)
+          catch(std::exception & e)
             {
               error_in_transform(e, made_from);
             }
@@ -219,7 +220,7 @@
       tmp = pipe->read_all_as_string(Pipe::LAST_MESSAGE);
       out = base64< gzip<T> >(tmp, in.made_from);
     }
-  catch (Botan::Exception & e)
+  catch (std::exception & e)
     {
       pipe.reset(new Pipe(new Gzip_Compression,
                           new Base64_Encoder));
@@ -237,7 +238,7 @@
       pipe->process_msg(in());
       out = T(pipe->read_all_as_string(Pipe::LAST_MESSAGE), in.made_from);
     }
-  catch (Botan::Exception & e)
+  catch (std::exception & e)
     {
       pipe.reset(new Pipe(new Base64_Decoder,
                           new Gzip_Decompression));
@@ -264,7 +265,7 @@
       p->process_msg(dat());
       ident = id(p->read_all_as_string(Pipe::LAST_MESSAGE), dat.made_from);
     }
-  catch (Botan::Exception & e)
+  catch (std::exception & e)
     {
       p.reset(new Pipe(new Hash_Filter("SHA-160")));
       error_in_transform(e, dat.made_from);