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transmission/tests/libtransmission/crypto-test.cc
Charles Kerr ce51f1adbf
refactor: work around msvc constxpr std::array bug (#1429)
The tests FTBFS on the latest version of MSVC because it has a regression
that crashes the compiler when it sees a constexpr std::array. This commit
can be reverted when MSVC releases a fix.

https://developercommunity.visualstudio.com/content/problem/1139953/167-regression-auto-constexpr-with-deduced-array-i.html
2020-09-07 19:33:36 -05:00

278 lines
8 KiB
C++

/*
* This file Copyright (C) 2013-2014 Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
*/
#include "transmission.h"
#include "crypto.h"
#include "crypto-utils.h"
#include "utils.h"
#include "crypto-test-ref.h"
#include "gtest/gtest.h"
#include <array>
#include <cstring>
#include <string>
#include <unordered_set>
TEST(Crypto, torrentHash)
{
tr_crypto a;
auto hash = std::array<uint8_t, SHA_DIGEST_LENGTH>{};
for (size_t i = 0; i < hash.size(); ++i)
{
hash[i] = uint8_t(i);
}
tr_cryptoConstruct(&a, nullptr, true);
EXPECT_FALSE(tr_cryptoHasTorrentHash(&a));
EXPECT_EQ(nullptr, tr_cryptoGetTorrentHash(&a));
tr_cryptoSetTorrentHash(&a, hash.data());
EXPECT_TRUE(tr_cryptoHasTorrentHash(&a));
EXPECT_NE(nullptr, tr_cryptoGetTorrentHash(&a));
EXPECT_EQ(0, memcmp(tr_cryptoGetTorrentHash(&a), hash.data(), hash.size()));
tr_cryptoDestruct(&a);
for (size_t i = 0; i < hash.size(); ++i)
{
hash[i] = uint8_t(i + 1);
}
tr_cryptoConstruct(&a, hash.data(), false);
EXPECT_TRUE(tr_cryptoHasTorrentHash(&a));
EXPECT_NE(nullptr, tr_cryptoGetTorrentHash(&a));
EXPECT_EQ(0, memcmp(tr_cryptoGetTorrentHash(&a), hash.data(), hash.size()));
tr_cryptoSetTorrentHash(&a, nullptr);
EXPECT_FALSE(tr_cryptoHasTorrentHash(&a));
EXPECT_EQ(nullptr, tr_cryptoGetTorrentHash(&a));
tr_cryptoDestruct(&a);
}
TEST(Crypto, encryptDecrypt)
{
auto hash = std::array<uint8_t, SHA_DIGEST_LENGTH>{};
for (size_t i = 0; i < hash.size(); ++i)
{
hash[i] = uint8_t(i);
}
auto a = tr_crypto {};
tr_cryptoConstruct(&a, hash.data(), false);
auto b = tr_crypto_ {};
tr_cryptoConstruct_(&b, hash.data(), true);
auto public_key_length = int{};
EXPECT_TRUE(tr_cryptoComputeSecret(&a, tr_cryptoGetMyPublicKey_(&b, &public_key_length)));
EXPECT_TRUE(tr_cryptoComputeSecret_(&b, tr_cryptoGetMyPublicKey(&a, &public_key_length)));
auto const input1 = std::string { "test1" };
auto encrypted1 = std::array<char, 128>{};
auto decrypted1 = std::array<char, 128>{};
tr_cryptoEncryptInit(&a);
tr_cryptoEncrypt(&a, input1.size(), input1.data(), encrypted1.data());
tr_cryptoDecryptInit_(&b);
tr_cryptoDecrypt_(&b, input1.size(), encrypted1.data(), decrypted1.data());
EXPECT_EQ(input1, std::string(decrypted1.data(), input1.size()));
auto const input2 = std::string { "@#)C$@)#(*%bvkdjfhwbc039bc4603756VB3)" };
auto encrypted2 = std::array<char, 128>{};
auto decrypted2 = std::array<char, 128>{};
tr_cryptoEncryptInit_(&b);
tr_cryptoEncrypt_(&b, input2.size(), input2.data(), encrypted2.data());
tr_cryptoDecryptInit(&a);
tr_cryptoDecrypt(&a, input2.size(), encrypted2.data(), decrypted2.data());
EXPECT_EQ(input2, std::string(decrypted2.data(), input2.size()));
tr_cryptoDestruct_(&b);
tr_cryptoDestruct(&a);
}
TEST(Crypto, sha1)
{
auto hash1 = std::array<uint8_t, SHA_DIGEST_LENGTH>{};
auto hash2 = std::array<uint8_t, SHA_DIGEST_LENGTH>{};
EXPECT_TRUE(tr_sha1(hash1.data(), "test", 4, nullptr));
EXPECT_TRUE(tr_sha1_(hash2.data(), "test", 4, nullptr));
EXPECT_EQ(0,
memcmp(hash1.data(), "\xa9\x4a\x8f\xe5\xcc\xb1\x9b\xa6\x1c\x4c\x08\x73\xd3\x91\xe9\x87\x98\x2f\xbb\xd3",
hash1.size()));
EXPECT_EQ(0, memcmp(hash1.data(), hash2.data(), hash2.size()));
EXPECT_TRUE(tr_sha1(hash1.data(), "1", 1, "22", 2, "333", 3, nullptr));
EXPECT_TRUE(tr_sha1_(hash2.data(), "1", 1, "22", 2, "333", 3, nullptr));
EXPECT_EQ(0,
memcmp(hash1.data(), "\x1f\x74\x64\x8e\x50\xa6\xa6\x70\x8e\xc5\x4a\xb3\x27\xa1\x63\xd5\x53\x6b\x7c\xed",
hash1.size()));
EXPECT_EQ(0, memcmp(hash1.data(), hash2.data(), hash2.size()));
}
TEST(Crypto, ssha1)
{
struct LocalTest
{
char const* const plain_text;
char const* const ssha1;
};
auto const tests = std::array<LocalTest, 2>{
LocalTest{ "test", "{15ad0621b259a84d24dcd4e75b09004e98a3627bAMbyRHJy" },
{ "QNY)(*#$B)!_X$B !_B#($^!)*&$%CV!#)&$C!@$(P*)", "{10e2d7acbb104d970514a147cd16d51dfa40fb3c0OSwJtOL" }
};
auto constexpr HashCount = size_t{ 4 * 1024 };
for (auto const& test : tests)
{
std::unordered_set<std::string> hashes;
hashes.reserve(HashCount);
char* const phrase = tr_strdup(test.plain_text);
EXPECT_TRUE(tr_ssha1_matches(test.ssha1, phrase));
EXPECT_TRUE(tr_ssha1_matches_(test.ssha1, phrase));
for (size_t j = 0; j < HashCount; ++j)
{
char* hash = (j % 2 == 0) ? tr_ssha1(phrase) : tr_ssha1_(phrase);
EXPECT_NE(nullptr, hash);
// phrase matches each of generated hashes
EXPECT_TRUE(tr_ssha1_matches(hash, phrase));
EXPECT_TRUE(tr_ssha1_matches_(hash, phrase));
hashes.insert(hash);
tr_free(hash);
}
// confirm all hashes are different
EXPECT_EQ(HashCount, hashes.size());
/* exchange two first chars */
phrase[0] ^= phrase[1];
phrase[1] ^= phrase[0];
phrase[0] ^= phrase[1];
for (auto const& hash : hashes)
{
/* changed phrase doesn't match the hashes */
EXPECT_FALSE(tr_ssha1_matches(hash.c_str(), phrase));
EXPECT_FALSE(tr_ssha1_matches_(hash.c_str(), phrase));
}
tr_free(phrase);
}
/* should work with different salt lengths as well */
EXPECT_TRUE(tr_ssha1_matches("{a94a8fe5ccb19ba61c4c0873d391e987982fbbd3", "test"));
EXPECT_TRUE(tr_ssha1_matches("{d209a21d3bc4f8fc4f8faf347e69f3def597eb170pySy4ai1ZPMjeU1", "test"));
}
TEST(Crypto, random)
{
/* test that tr_rand_int() stays in-bounds */
for (int i = 0; i < 100000; ++i)
{
int const val = tr_rand_int(100);
EXPECT_LE(0, val);
EXPECT_LT(val, 100);
}
}
static bool base64Eq(char const* a, char const* b)
{
for (;; ++a, ++b)
{
while (*a == '\r' || *a == '\n')
{
++a;
}
while (*b == '\r' || *b == '\n')
{
++b;
}
if (*a == '\0' || *b == '\0' || *a != *b)
{
break;
}
}
return *a == *b;
}
TEST(Crypto, base64)
{
auto len = size_t{};
auto* out = static_cast<char*>(tr_base64_encode_str("YOYO!", &len));
EXPECT_EQ(strlen(out), len);
EXPECT_TRUE(base64Eq("WU9ZTyE=", out));
auto* in = static_cast<char*>(tr_base64_decode_str(out, &len));
EXPECT_EQ(decltype(len) { 5 }, len);
EXPECT_STREQ("YOYO!", in);
tr_free(in);
tr_free(out);
out = static_cast<char*>(tr_base64_encode("", 0, &len));
EXPECT_EQ(size_t{}, len);
EXPECT_STREQ("", out);
tr_free(out);
out = static_cast<char*>(tr_base64_decode("", 0, &len));
EXPECT_EQ(0, len);
EXPECT_STREQ("", out);
tr_free(out);
out = static_cast<char*>(tr_base64_encode(nullptr, 0, &len));
EXPECT_EQ(0, len);
EXPECT_EQ(nullptr, out);
out = static_cast<char*>(tr_base64_decode(nullptr, 0, &len));
EXPECT_EQ(0, len);
EXPECT_EQ(nullptr, out);
static auto constexpr MaxBufSize = size_t{ 1024 };
for (size_t i = 1; i <= MaxBufSize; ++i)
{
auto buf = std::array<char, MaxBufSize + 1>{};
for (size_t j = 0; j < i; ++j)
{
buf[j] = char(tr_rand_int_weak(256));
}
out = static_cast<char*>(tr_base64_encode(buf.data(), i, &len));
EXPECT_EQ(strlen(out), len);
in = static_cast<char*>(tr_base64_decode(out, len, &len));
EXPECT_EQ(i, len);
EXPECT_EQ(0, memcmp(in, buf.data(), len));
tr_free(in);
tr_free(out);
for (size_t j = 0; j < i; ++j)
{
buf[j] = char(1 + tr_rand_int_weak(255));
}
buf[i] = '\0';
out = static_cast<char*>(tr_base64_encode_str(buf.data(), &len));
EXPECT_EQ(strlen(out), len);
in = static_cast<char*>(tr_base64_decode_str(out, &len));
EXPECT_EQ(i, len);
EXPECT_STREQ(buf.data(), in);
tr_free(in);
tr_free(out);
}
}