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#include <qpdf/assert_test.h>
#include <qpdf/Pl_RC4.hh>
#include <qpdf/Pl_StdioFile.hh>
#include <qpdf/QIntC.hh>
#include <qpdf/QUtil.hh>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <iostream>
static void
other_tests()
{
// Test cases not covered by the pipeline: string as key, convert
// in place
RC4 r(reinterpret_cast<unsigned char const*>("quack"));
auto data = std::make_unique<unsigned char[]>(6);
memcpy(data.get(), "potato", 6);
r.process(data.get(), 6, data.get());
assert(memcmp(data.get(), "\xa5\x6f\xe7\x27\x2b\x5c", 6) == 0);
std::cout << "passed" << std::endl;
}
int
main(int argc, char* argv[])
{
if ((argc == 2) && (strcmp(argv[1], "other") == 0)) {
other_tests();
return 0;
}
if (argc != 4) {
std::cerr << "Usage: rc4 hex-key infile outfile" << std::endl;
exit(2);
}
char* hexkey = argv[1];
char* infilename = argv[2];
char* outfilename = argv[3];
unsigned int hexkeylen = QIntC::to_uint(strlen(hexkey));
unsigned int keylen = hexkeylen / 2;
auto* key = new unsigned char[keylen + 1];
key[keylen] = '\0';
FILE* infile = QUtil::safe_fopen(infilename, "rb");
for (unsigned int i = 0; i < strlen(hexkey); i += 2) {
char t[3];
t[0] = hexkey[i];
t[1] = hexkey[i + 1];
t[2] = '\0';
long val = strtol(t, nullptr, 16);
key[i / 2] = static_cast<unsigned char>(val);
}
FILE* outfile = QUtil::safe_fopen(outfilename, "wb");
auto* out = new Pl_StdioFile("stdout", outfile);
// Use a small buffer size (64) for testing
auto* rc4 = new Pl_RC4("rc4", out, key, QIntC::to_int(keylen), 64U);
delete[] key;
// 64 < buffer size < 512, buffer_size is not a power of 2 for testing
unsigned char buf[100];
bool done = false;
while (!done) {
size_t len = fread(buf, 1, sizeof(buf), infile);
if (len <= 0) {
done = true;
} else {
rc4->write(buf, len);
}
}
rc4->finish();
delete rc4;
delete out;
fclose(infile);
fclose(outfile);
return 0;
}
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