#5657 Fleshed out the implementation of SerialKey

src/lib/shared/SerialKey.cpp

@@ -17,44 +17,185 @@
 
 #include "SerialKey.h"
 
+#include <vector>
+
+using namespace std;
+
 SerialKey::SerialKey(std::string serial) :
 	m_userLimit(1),
-	m_warnTime(1),
-	m_expireTime(1),
-	m_trial(true)
+	m_warnTime(0),
+	m_expireTime(0),
+	m_edition(kBasic),
+	m_trial(true),
+	m_valid(false)
 {
-	m_userLimit = 1;
-	m_warnTime = 1;
-	m_expireTime = 1;
-	m_trial = true;
+	string plainText = decode(serial);
+	if (!plainText.empty()) {
+		parse(serial);
+	}
 }
 
 bool
 SerialKey::isValid(unsigned long long currentTime) const
 {
-	return true;
+	bool result = false;
+	
+	if (m_valid) {
+		if (m_trial) {
+			if (currentTime < m_expireTime) {
+				result = true;
+			}
+		}
+		else {
+			result = true;
+		}
+	}
+	
+	return result;
 }
 
 bool
 SerialKey::isExpiring(unsigned long long currentTime) const
 {
-	return true;
+	bool result = false;
+	
+	if (m_valid) {
+		if (m_warnTime < currentTime && currentTime < m_expireTime) {
+			result = true;
+		}
+	}
+	
+	return result;
 }
 
 bool
 SerialKey::isExpired(unsigned long long currentTime) const
 {
-	return true;
+	bool result = false;
+	
+	if (m_valid) {
+		if (currentTime > m_expireTime) {
+			result = true;
+		}
+	}
+	
+	return result;
 }
 
 bool
 SerialKey::isTrial() const
 {
-	return true;
+	return m_trial;
 }
 
 int
 SerialKey::edition() const
 {
-	return 1;
+	return m_edition;
+}
+
+unsigned long long
+SerialKey::dayLeft(unsigned long long currentTime) const
+{
+	unsigned long long timeLeft =  0;
+	if (m_expireTime > currentTime) {
+		timeLeft = m_expireTime - currentTime;
+	}
+
+	unsigned long long day = 60 * 60 * 24;
+	
+	return timeLeft / day;
+}
+
+std::string
+SerialKey::decode(const std::string& serial) const
+{
+	static const char* const lut = "0123456789ABCDEF";
+	string output;
+	size_t len = serial.length();
+	if (len & 1) {
+		return output;
+	}
+	
+	output.reserve(len / 2);
+	for (size_t i = 0; i < len; i += 2) {
+		
+		char a = serial[i];
+		char b = serial[i + 1];
+		
+		const char* p = std::lower_bound(lut, lut + 16, a);
+		const char* q = std::lower_bound(lut, lut + 16, b);
+		
+		if (*q != b || *p != a) {
+			return output;
+		}
+		
+		output.push_back(static_cast<char>(((p - lut) << 4) | (q - lut)));
+	}
+	
+	return output;
+}
+
+void
+SerialKey::parse(std::string plainSerial)
+{
+	string parityStart = plainSerial.substr(0, 1);
+	string parityEnd = plainSerial.substr(plainSerial.length() - 1, 1);
+	
+	// check for parity chars { and }, record parity result, then remove them.
+	if (parityStart == "{" && parityEnd == "}") {
+		plainSerial = plainSerial.substr(1, plainSerial.length() - 2);
+		
+		// tokenize serialised subscription.
+		vector<string> parts;
+		std::string::size_type pos = 0;
+		bool look = true;
+		while (look) {
+			std::string::size_type start = pos;
+			pos = plainSerial.find(";", pos);
+			if (pos == string::npos) {
+				pos = plainSerial.length();
+				look = false;
+			}
+			parts.push_back(plainSerial.substr(start, pos - start));
+			pos += 1;
+		}
+		
+		if ((parts.size() == 8)
+			&& (parts.at(0).find("v1") != string::npos)) {
+			// e.g.: {v1;basic;Bob;1;email;company name;1398297600;1398384000}
+			m_edition = getEdition(parts.at(1));
+			m_name = parts.at(2);
+			sscanf(parts.at(3).c_str(), "%d", &m_userLimit);
+			m_email = parts.at(4);
+			m_company = parts.at(5);
+			sscanf(parts.at(6).c_str(), "%lld", &m_warnTime);
+			sscanf(parts.at(7).c_str(), "%lld", &m_expireTime);
+			m_valid = true;
+		}
+		else if ((parts.size() == 9)
+				 && (parts.at(0).find("v2") != string::npos)) {
+			// e.g.: {v2;trial;basic;Bob;1;email;company name;1398297600;1398384000}
+			m_trial = parts.at(1) == "trial" ? true : false;
+			m_edition = getEdition(parts.at(2));
+			m_name = parts.at(3);
+			sscanf(parts.at(4).c_str(), "%d", &m_userLimit);
+			m_email = parts.at(5);
+			m_company = parts.at(6);
+			sscanf(parts.at(7).c_str(), "%lld", &m_warnTime);
+			sscanf(parts.at(8).c_str(), "%lld", &m_expireTime);
+			m_valid = true;
+		}
+	}
+}
+
+Edition
+SerialKey::getEdition(std::string editionStr)
+{
+	Edition e = kBasic;
+	if (editionStr == "pro") {
+		e = kPro;
+	}
+	
+	return e;
 }

src/lib/shared/SerialKey.h

@@ -19,6 +19,15 @@
 
 #include <string>
 
+#ifdef TEST_ENV
+#include "gtest/gtest_prod.h"
+#endif
+
+enum Edition{
+	kBasic,
+	kPro
+};
+
 class SerialKey {
 public:
 	SerialKey(std::string serial);
@@ -28,14 +37,32 @@ public:
 	bool				isExpired(unsigned long long currentTime) const;
 	bool				isTrial() const;
 	int					edition() const;
+	unsigned long long	dayLeft(unsigned long long currentTime) const;
+
+private:
+	std::string			decode(const std::string& serial) const;
+	void				parse(std::string plainSerial);
+	Edition				getEdition(std::string editionStr);
+
+#ifdef TEST_ENV
+private:
+	FRIEND_TEST(SerialKeyTests, decode_empty_returnEmptyString);
+	FRIEND_TEST(SerialKeyTests, decode_invalidDigit_returnEmptyString);
+	FRIEND_TEST(SerialKeyTests, decode_validSerial_returnPlainText);
+	FRIEND_TEST(SerialKeyTests, parse_noParty_invalid);
+	FRIEND_TEST(SerialKeyTests, parse_invalidPartsLenghth_invalid);
+	FRIEND_TEST(SerialKeyTests, parse_validV1Serial_valid);
+	FRIEND_TEST(SerialKeyTests, parse_validV2Serial_valid);
+#endif
 	
 private:
 	std::string			m_name;
-	std::string			m_edition;
 	std::string			m_email;
 	std::string			m_company;
 	int					m_userLimit;
-	int					m_warnTime;
-	int					m_expireTime;
+	unsigned long long	m_warnTime;
+	unsigned long long	m_expireTime;
+	Edition				m_edition;
 	bool				m_trial;
+	bool				m_valid;
 };