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/*
* (C) 2002 Jack Lloyd
*
* Distributed under the terms of the Botan license
*/
/*
An Botan example application showing how to use the pop and prepend
functions of Pipe. Based on the md5 example. It's output should always
be identical to such.
*/
#include <iostream>
#include <fstream>
#include <botan/botan.h>
int main(int argc, char* argv[])
{
if(argc < 2)
{
std::cout << "Usage: " << argv[0] << " <filenames>" << std::endl;
return 1;
}
Botan::LibraryInitializer init;
// this is a pretty vacuous example, but it's useful as a test
Botan::Pipe pipe;
// CPS == Current Pipe Status, ie what Filters are set up
pipe.prepend(new Botan::Hash_Filter("MD5"));
// CPS: MD5
pipe.prepend(new Botan::Hash_Filter("RIPEMD-160"));
// CPS: RIPEMD-160 | MD5
pipe.prepend(new Botan::Chain(
new Botan::Hash_Filter("RIPEMD-160"),
new Botan::Hash_Filter("RIPEMD-160")));
// CPS: (RIPEMD-160 | RIPEMD-160) | RIPEMD-160 | MD5
pipe.pop(); // will pop everything inside the Chain as well as Chain itself
// CPS: RIPEMD-160 | MD5
pipe.pop(); // will get rid of the RIPEMD-160 Hash_Filter
// CPS: MD5
pipe.prepend(new Botan::Hash_Filter("SHA-1"));
// CPS: SHA-1 | MD5
pipe.append(new Botan::Hex_Encoder);
// CPS: SHA-1 | MD5 | Hex_Encoder
pipe.prepend(new Botan::Hash_Filter("SHA-1"));
// CPS: SHA-1 | SHA-1 | MD5 | Hex_Encoder
pipe.pop(); // Get rid of the Hash_Filter(SHA-1)
pipe.pop(); // Get rid of the other Hash_Filter(SHA-1)
// CPS: MD5 | Hex_Encoder
// The Hex_Encoder is safe because it is at the end of the Pipe,
// and pop() pulls off the Filter that is at the start.
pipe.prepend(new Botan::Hash_Filter("RIPEMD-160"));
// CPS: RIPEMD-160 | MD5 | Hex_Encoder
pipe.pop(); // Get rid of that last prepended Hash_Filter(RIPEMD-160)
// CPS: MD5 | Hex_Encoder
int skipped = 0;
for(int j = 1; 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();
file.close();
pipe.set_default_msg(j-1-skipped);
std::cout << pipe << " " << argv[j] << std::endl;
}
return 0;
}
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