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/*
Validation routines
*/
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
#include <cstdlib>
#include <botan/filters.h>
#include <botan/exceptn.h>
using namespace Botan;
#include "validate.h"
#include "common.h"
#define EXTRA_TESTS 0
#define DEBUG 0
namespace {
u32bit random_word(Botan::RandomNumberGenerator& rng,
u32bit max)
{
#if DEBUG
/* deterministic version for tracking down buffering bugs */
static bool first = true;
if(first) { srand(5); first = false; }
u32bit r = 0;
for(u32bit j = 0; j != 4; j++)
r = (r << 8) | std::rand();
return ((r % max) + 1); // return between 1 and max inclusive
#else
/* normal version */
u32bit r = 0;
for(u32bit j = 0; j != 4; j++)
r = (r << 8) | rng.next_byte();
return ((r % max) + 1); // return between 1 and max inclusive
#endif
}
}
Botan::Filter* lookup(const std::string&, const std::vector<std::string>&,
const std::string& = "All");
bool failed_test(const std::string&, std::vector<std::string>, bool, bool,
const std::string&, std::string&,
Botan::RandomNumberGenerator& rng);
std::vector<std::string> parse(const std::string&);
void strip(std::string&);
Botan::SecureVector<byte> decode_hex(const std::string&);
u32bit do_validation_tests(const std::string& filename,
RandomNumberGenerator& rng,
bool should_pass)
{
std::ifstream test_data(filename.c_str());
bool first_mark = true;
if(!test_data)
throw Botan::Stream_IO_Error("Couldn't open test file " + filename);
u32bit errors = 0, alg_count = 0;
std::string algorithm;
std::string section;
std::string last_missing;
bool is_extension = false;
u32bit counter = 0;
while(!test_data.eof())
{
if(test_data.bad() || test_data.fail())
throw Botan::Stream_IO_Error("File I/O error reading from " +
filename);
std::string line;
std::getline(test_data, line);
const std::string MARK = "# MARKER: ";
if(line.find(MARK) != std::string::npos)
{
if(first_mark)
first_mark = false;
else if(should_pass)
std::cout << std::endl;
counter = 0;
section = line;
section.replace(section.find(MARK), MARK.size(), "");
if(should_pass)
std::cout << "Testing " << section << ": ";
}
strip(line);
if(line.size() == 0) continue;
// Do line continuation
while(line[line.size()-1] == '\\' && !test_data.eof())
{
line.replace(line.size()-1, 1, "");
std::string nextline;
std::getline(test_data, nextline);
strip(nextline);
if(nextline.size() == 0) continue;
line += nextline;
}
if(line[0] == '[' && line[line.size() - 1] == ']')
{
const std::string ext_mark = "<EXTENSION>";
algorithm = line.substr(1, line.size() - 2);
is_extension = false;
if(algorithm.find(ext_mark) != std::string::npos)
{
is_extension = true;
algorithm.replace(algorithm.find(ext_mark),
ext_mark.length(), "");
}
#if DEBUG
if(should_pass)
std::cout << "Testing " << algorithm << "..." << std::endl;
else
std::cout << "Testing (expecing failure) "
<< algorithm << "..." << std::endl;
#endif
alg_count = 0;
continue;
}
std::vector<std::string> substr = parse(line);
alg_count++;
if(should_pass &&
(counter % 100 == 0 || (counter < 100 && counter % 10 == 0)))
{
std::cout << '.';
std::cout.flush();
}
counter++;
bool failed = failed_test(algorithm, substr,
is_extension, should_pass,
section, last_missing, rng);
if(failed && should_pass)
{
std::cout << "ERROR: \"" << algorithm << "\" failed test #"
<< alg_count << std::endl;
errors++;
}
if(!failed && !should_pass)
{
std::cout << "ERROR: \"" << algorithm << "\" passed test #"
<< alg_count << " (unexpected pass)" << std::endl;
errors++;
}
}
if(should_pass)
std::cout << std::endl;
return errors;
}
bool failed_test(const std::string& algo,
std::vector<std::string> params,
bool is_extension, bool exp_pass,
const std::string& section,
std::string& last_missing,
Botan::RandomNumberGenerator& rng)
{
#if DEBUG
std::cout << "Testing: " << algo;
if(!exp_pass)
std::cout << " (expecting failure)";
std::cout << std::endl;
#endif
#if !EXTRA_TESTS
if(!exp_pass) return true;
#endif
const std::string in = params[0];
const std::string expected = params[1];
params.erase(params.begin());
params.erase(params.begin());
if(in.size() % 2 == 1)
{
std::cout << "Can't have an odd sized hex string!" << std::endl;
return true;
}
Botan::Pipe pipe;
try {
Botan::Filter* test = lookup(algo, params, section);
if(test == 0 && is_extension) return !exp_pass;
if(test == 0)
{
if(algo != last_missing)
{
std::cout << "WARNING: \"" + algo + "\" is not a known "
<< "algorithm name." << std::endl;
last_missing = algo;
}
return 0;
}
pipe.reset();
pipe.append(test);
pipe.append(new Botan::Hex_Encoder);
Botan::SecureVector<byte> data = decode_hex(in);
const byte* data_ptr = data;
// this can help catch errors with buffering, etc
u32bit len = data.size();
pipe.start_msg();
while(len)
{
u32bit how_much = random_word(rng, len);
pipe.write(data_ptr, how_much);
data_ptr += how_much;
len -= how_much;
}
pipe.end_msg();
}
catch(Botan::Algorithm_Not_Found& e)
{
std::cout << "Algorithm not found: " << e.what() << std::endl;
return false;
}
catch(Botan::Exception& e)
{
if(exp_pass || DEBUG)
std::cout << "Exception caught: " << e.what() << std::endl;
return true;
}
catch(std::exception& e)
{
if(exp_pass || DEBUG)
std::cout << "Standard library exception caught: "
<< e.what() << std::endl;
return true;
}
catch(...)
{
if(exp_pass || DEBUG)
std::cout << "Unknown exception caught." << std::endl;
return true;
}
std::string output;
if(pipe.remaining())
{
/* Test peeking at an offset in Pipe/SecureQueue */
u32bit offset = random_word(rng, pipe.remaining() - 1);
u32bit length = random_word(rng, pipe.remaining() - offset);
Botan::SecureVector<byte> peekbuf(length);
pipe.peek(peekbuf, length, offset);
output = pipe.read_all_as_string();
bool OK = true;
for(u32bit j = offset; j != offset+length; j++)
if(static_cast<byte>(output[j]) != peekbuf[j-offset])
OK = false;
if(!OK)
throw Botan::Self_Test_Failure("Peek testing failed in validate.cpp");
}
if(output == expected && !exp_pass)
{
std::cout << "FAILED: " << expected << " == " << std::endl
<< " " << output << std::endl;
return false;
}
if(output != expected && exp_pass)
{
std::cout << "\nFAILED: " << expected << " != " << std::endl
<< " " << output << std::endl;
return true;
}
if(output != expected && !exp_pass) return true;
return false;
}
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