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/*
Prints the message digest of files, using an arbitrary hash function
chosen by the user. This is less flexible that I might like, for example:
./hash sha1 some_file [or md5 or sha-1 or ripemd160 or ...]
will not work, cause the name lookup is case-sensitive. Oh well...
Written by Jack Lloyd (lloyd@randombit.net), on August 4, 2002
- December 16, 2003: "Fixed" to accept "sha1" or "md5" as a hash name
This file is in the public domain
*/
#include <iostream>
#include <fstream>
#include <botan/botan.h>
int main(int argc, char* argv[])
{
if(argc < 3)
{
std::cout << "Usage: " << argv[0] << " digest <filenames>" << std::endl;
return 1;
}
Botan::LibraryInitializer init;
std::string hash = argv[1];
/* a couple of special cases, kind of a crock */
if(hash == "sha1") hash = "SHA-1";
if(hash == "md5") hash = "MD5";
try {
if(!Botan::have_hash(hash))
{
std::cout << "Unknown hash \"" << argv[1] << "\"" << std::endl;
return 1;
}
Botan::Pipe pipe(new Botan::Hash_Filter(hash),
new Botan::Hex_Encoder);
int skipped = 0;
for(int j = 2; argv[j] != 0; j++)
{
std::ifstream file(argv[j]);
if(!file)
{
std::cout << "ERROR: could not open " << argv[j] << std::endl;
skipped++;
continue;
}
pipe.start_msg();
file >> pipe;
pipe.end_msg();
pipe.set_default_msg(j-2-skipped);
std::cout << pipe << " " << argv[j] << std::endl;
}
}
catch(std::exception& e)
{
std::cout << "Exception caught: " << e.what() << std::endl;
}
return 0;
}
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