[Botan-devel] ...and a little help on the mac as well

[Jeff B <je...@ho...>]

If you read my previous message, you'll know that I'm trying to build Botan 
1.2.4 on Windows using VS .NET 2003.  Now, I'm trying to build Botan 1.2.4 
on the Macintosh (for MacOS X) using Codewarrior 8.  Here's the scoop:

1. I used perl configure.pl gcc-aix-ppc to set up my configuration.  Does 
this seem right?  I know that the mac & ppc aren't supported but 
http://botan.randombit.net/ states that Botan cam be built for MacOS X 
(albeit using gcc).

2. I created a console project using /Botan/Doc/Examples/rsa_kgen.cpp and 
added the Botan source.

3. The project compiles and links.  When I run the project, I pass main() 
"512 ThisIsASamplePassphrase", but
    LibraryInitializer init;
Fails.




Looking into it, LibraryInitializer::LibraryInitializer() calls
    Init::initialize(arg_string);
(arg_stringis is "")

Inside Init::initialize()
    total_bits += Global_RNG::seed(true, min_entropy - total_bits);
Inside Global_RNG::seed()
    bits += poll_es<File_EntropySource>(slow_poll);
whuch calls poll_es() in rng_seed.cpp


poll_es() is
    template<class ES>
    u32bit poll_es(bool slow_poll, u32bit buf_size = 256)
       {
       ES source;
       SecureVector<byte> buffer(buf_size);
       u32bit got = 0;

       if(slow_poll) got = source.slow_poll(buffer, buffer.size());
       else          got = source.fast_poll(buffer, buffer.size());

       Global_RNG::add_entropy(buffer, got);
       return entropy_estimate(buffer, got);
       }
    }


when ES object is constructed,
    File_EntropySource::File_EntropySource(const std::string& sources)
       {
       std::vector<std::string> source_list = split_on(sources, ':');
       std::vector<std::string> defaults = Config::get_list("rng/es_files");

       for(u32bit j = 0; j != source_list.size(); j++)
          add_source(source_list[j]);
       for(u32bit j = 0; j != defaults.size(); j++)
          add_source(defaults[j]);
       }


the sources var that's passed in is "", so
       std::vector<std::string> source_list = split_on(sources, ':');
source_list is "" and
       std::vector<std::string> defaults = Config::get_list("rng/es_files");
is returning "/dev/urandom:/dev/random"


stepping out and getting back to poll_es(), the call
   if(slow_poll) got = source.slow_poll(buffer, buffer.size());
is going to
    u32bit File_EntropySource::slow_poll(byte output[], u32bit length)
       {
       u32bit read = 0;
       for(u32bit j = 0; j != sources.size(); j++)
          {
          std::ifstream random_source(sources[j].c_str());
          if(!random_source) continue;
          random_source.read((char*)output + read, length);
          read += random_source.gcount();
          length -= random_source.gcount();
          if(length == 0)
             break;
          }
       return read;
       }


when j=0 and we try
      std::ifstream random_source(sources[j].c_str());
Sources[0] is "/dev/urandom" and std::ifstream() is failing

Likewise, when j=1
Sources[0] is "/dev/random" and std::ifstream() is failing





OK, I'm curious... Under Linix, if you
    std::ifstream("/directory/MyFile.txt");
Does this work?






Any suggestions on what to do?


Thanks,


Jeff

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