+#include "tut/tut.hpp"
+
+#include "stg/bfstream.h"
+#include "stg/os_int.h"
+
+#include <algorithm>
+#include <string>
+#include <cstring>
+
+namespace
+{
+
+class TRACKER
+{
+ public:
+ TRACKER() : m_lastSize(0), m_callCount(0), m_lastBlock(NULL) {}
+ ~TRACKER() { delete[] m_lastBlock; }
+ void Call(const void * block, size_t size)
+ {
+ delete[] m_lastBlock;
+ if (size > 0)
+ {
+ m_lastBlock = new char[size];
+ memcpy(m_lastBlock, block, size);
+ }
+ else
+ m_lastBlock = NULL;
+ m_lastSize = size;
+ ++m_callCount;
+ }
+ size_t LastSize() const { return m_lastSize; }
+ size_t CallCount() const { return m_callCount; }
+ const void * LastBlock() const { return m_lastBlock; }
+
+ private:
+ size_t m_lastSize;
+ size_t m_callCount;
+ char * m_lastBlock;
+};
+
+void Callback(const void * block, size_t size, void * data)
+{
+TRACKER & tracker = *static_cast<TRACKER *>(data);
+tracker.Call(block, size);
+}
+
+}
+
+namespace tut
+{
+ struct bfstream_data {
+ };
+
+ typedef test_group<bfstream_data> tg;
+ tg bfstream_test_group("BFStream tests group");
+
+ typedef tg::object testobject;
+
+ template<>
+ template<>
+ void testobject::test<1>()
+ {
+ set_test_name("Check bfstream mechanics");
+
+ TRACKER tracker;
+ STG::ENCRYPT_STREAM stream("pr7Hhen", Callback, &tracker);
+ ensure_equals("CallCount() == 0 after construction", tracker.CallCount(), 0);
+
+ uint32_t block[2] = {0x12345678, 0x87654321};
+ stream.Put(&block[0], sizeof(block[0]));
+ ensure_equals("CallCount() == 0 after first put", tracker.CallCount(), 0);
+ stream.Put(&block[1], sizeof(block[1]));
+ ensure_equals("CallCount() == 1 after second put", tracker.CallCount(), 1);
+
+ uint32_t block2[4] = {0x12345678, 0x87654321, 0x12345678, 0x87654321};
+ stream.Put(&block2[0], sizeof(block2[0]) * 3);
+ ensure_equals("CallCount() == 2 after third put", tracker.CallCount(), 2);
+ stream.Put(&block2[3], sizeof(block2[3]));
+ ensure_equals("CallCount() == 3 after fourth put", tracker.CallCount(), 3);
+ }
+
+ template<>
+ template<>
+ void testobject::test<2>()
+ {
+ set_test_name("Check bfstream encryption");
+
+ TRACKER tracker;
+ STG::ENCRYPT_STREAM stream("pr7Hhen", Callback, &tracker);
+
+ uint32_t block[2] = {0x12345678, 0x87654321};
+ stream.Put(&block[0], sizeof(block[0]));
+ ensure_equals("LastSize() == 0 after first put", tracker.LastSize(), 0);
+ ensure_equals("LastBlock() == NULL after first put", tracker.LastBlock(), static_cast<const void *>(NULL));
+ stream.Put(&block[1], sizeof(block[1]));
+ ensure_equals("LastSize() == 8 after second put", tracker.LastSize(), 8);
+ const uint32_t * ptr = static_cast<const uint32_t *>(tracker.LastBlock());
+ ensure_equals("ptr[0] == 0xd3988cd after second put", ptr[0], 0xd3988cd);
+ ensure_equals("ptr[1] == 0x7996c6d6 after second put", ptr[1], 0x7996c6d6);
+
+ uint32_t block2[4] = {0x12345678, 0x87654321, 0x12345678, 0x87654321};
+ stream.Put(&block2[0], sizeof(block2[0]) * 3);
+ ensure_equals("LastSize() == 8 after third put", tracker.LastSize(), 8);
+ ptr = static_cast<const uint32_t *>(tracker.LastBlock());
+ ensure_equals("ptr[0] == 0xd3988cd after third put", ptr[0], 0xd3988cd);
+ ensure_equals("ptr[1] == 0x7996c6d6 after third put", ptr[1], 0x7996c6d6);
+
+ stream.Put(&block2[3], sizeof(block2[3]));
+ ensure_equals("LastSize() == 8 after fourth put", tracker.LastSize(), 8);
+ ptr = static_cast<const uint32_t *>(tracker.LastBlock());
+ ensure_equals("ptr[0] == 0xd3988cd after fourth put", ptr[0], 0xd3988cd);
+ ensure_equals("ptr[1] == 0x7996c6d6 after fourth put", ptr[1], 0x7996c6d6);
+ }
+
+ template<>
+ template<>
+ void testobject::test<3>()
+ {
+ set_test_name("Check bfstream long string processing");
+
+ TRACKER tracker;
+ STG::ENCRYPT_STREAM estream("pr7Hhen", Callback, &tracker);
+ std::string source = "This is a test long string for checking stream encryption/decryption. \"abcdefghijklmnopqrstuvwxyz 0123456789 ABCDEFGHIJKLMNOPQRSTUVWXYZ\"";
+ char buffer[source.length() + 9];
+
+ estream.Put(source.c_str(), source.length() + 1, true);
+ ensure("Encryption long string LastSize()", tracker.LastSize() >= source.length() + 1);
+ ensure("Encryption long string LastBlock() != NULL", tracker.LastBlock() != NULL);
+ memcpy(buffer, tracker.LastBlock(), std::min(tracker.LastSize(), sizeof(buffer)));
+
+ STG::DECRYPT_STREAM dstream("pr7Hhen", Callback, &tracker);
+ dstream.Put(buffer, sizeof(buffer), true);
+ ensure("Decryption long string LastSize() decryption", tracker.LastSize() >= sizeof(buffer));
+ ensure("Decryption long string LastBlock() != NULL", tracker.LastBlock() != NULL);
+ memcpy(buffer, tracker.LastBlock(), std::min(tracker.LastSize(), sizeof(buffer)));
+
+ ensure_equals("Decrypt(Encrypt(source)) == source", std::string(buffer), source);
+ }
+
+}