//
// used the hash_table object receive from remote host
// and send a hash stream to the remote host.
//
void hash_table::hash_it (file_reader & reader, hasher_stream & stream) const
{
rs_mdfour_t ctx;
rs_mdfour_begin(&ctx);
uint64_t filsize = 0;
try {
int32_t f_blk_len = 0;
if (reader.exist_file ()) {
try {
reader.open_file (); // sometimes this will throw.
filsize = reader.get_file_size ();
f_blk_len = get_xdelta_block_size (filsize);
}
catch (...) {
stream.start_hash_stream (reader.get_fname (), 0);
throw;
}
stream.start_hash_stream (reader.get_fname (), f_blk_len);
}
else {
std::string mesg = fmt_string ("File %s not exists."
, reader.get_fname ().c_str ());
stream.start_hash_stream (reader.get_fname (), 0);
stream.on_error (mesg, ENOENT);
goto end;
}
read_and_hash (reader, stream, filsize, f_blk_len, 0, &ctx);
}
catch (xdelta_exception &e) {
stream.on_error (e.what (), e.get_errno ());
}
end:
uchar_t file_hash[DIGEST_BYTES];
memset (file_hash, 0, sizeof (file_hash));
rs_mdfour_result (&ctx, file_hash);
reader.close_file ();
stream.end_hash_stream (file_hash, filsize);
return;
}
