414 lines
15 KiB
C++
414 lines
15 KiB
C++
#pragma once
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#include <string>
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#include <chrono>
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#include <memory>
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#include <utility>
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#include <ThreadPool/Mutex.h>
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#include <ThreadPool/Future.h>
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#include <Variable.h>
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#define LICENSE_VERSION 1
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#define LICENSE_PROT_VERSION 2
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#define MAGIC_NUMER 0xBADC0DED
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namespace license {
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namespace exceptions {
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class LicenseException : public std::exception {
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public:
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LicenseException() = delete;
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LicenseException(std::string message) : errorMessage(std::move(message)) {}
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LicenseException(const LicenseException& ref) : errorMessage(ref.errorMessage) {}
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LicenseException(LicenseException&& ref) : errorMessage(std::move(ref.errorMessage)) {}
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const char* what() const noexcept override;
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private:
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std::string errorMessage;
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};
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}
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struct LicenseHeader {
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uint16_t version;
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const char cryptKey[64]; //The dummy key for data de/encryption
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} __attribute__ ((__packed__));
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namespace v2 {
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struct LicenseHeader {
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uint16_t version; /* first 16 bytes const version */
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uint64_t crypt_key_seed; /* the seed */
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uint8_t crypt_key_verify_offset; /* the first 8 bits determine how much generations (n * 3) and the rest what value is expeted. Due to the loss of 8 bits does the highest 8 bits get xored with the lowerst and 56 bits get compared */
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uint8_t crypt_key_verify[5];
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} __attribute__ ((__packed__));
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static_assert(sizeof(LicenseHeader) == 16);
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struct BodyHeader {
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uint16_t length_private_data;
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uint16_t length_hierarchy; /* contains all public data */
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uint8_t checksum_hierarchy[20]; /* SHA1 */
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uint8_t private_data_sign[64]; /* ed sign from the hierarchy created public key */
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} __attribute__ ((__packed__));
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extern std::array<uint8_t, 32> public_root_key;
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struct HierarchyEntry;
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struct LicensePrivate;
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struct LicensePrivateWriteOptions;
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struct License {
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public:
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static std::shared_ptr<License> read(const uint8_t* /* buffer */, size_t /* max size */, uint8_t& /* error */);
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static std::shared_ptr<License> create(const std::vector<std::shared_ptr<const HierarchyEntry>>& hierarchy, const std::array<uint8_t, 32>& /* precalculated last entry */);
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/* Note for the write method: Make the private version index configurable, so we could "export" the license */
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/* Note for the write method: Write "private_buffer" if we're not able to resign the private data. As well enfore (assert) that we have a private buffer (e.g. by the read method) */
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~License();
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const std::vector<std::shared_ptr<const HierarchyEntry>> hierarchy() const { return this->_hierarchy; }
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bool push_entry(const std::shared_ptr<const HierarchyEntry>& /* entry */, size_t* /* index */ = nullptr);
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bool hierarchy_timestamps_valid();
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template <typename I, typename... Args>
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bool push_entry(Args&&... args) {
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std::array<uint8_t, 32> key_private{}, key_public{};
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if(!this->generate_keypair(key_private.data(), key_public.data())) return false;
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auto entry = I::create(key_public.data(), std::forward<Args>(args)...);
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if(!entry) return false;
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size_t index;
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if(!this->push_entry(entry, &index)) return false;
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this->_register_raw_private_key(index, key_private.data());
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return true;
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}
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std::array<uint8_t, 32> generate_public_key(const uint8_t* /* public key root */, int /* length */ = -1) const;
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std::string write(uint8_t& /* error */);
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bool private_data_editable() const;
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bool write_private_data(const LicensePrivateWriteOptions& /* write options */);
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inline uint8_t version() const { return this->_version; }
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private:
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License() = default;
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uint8_t _version = 0;
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std::array<uint8_t, 64> private_buffer_sign{};
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uint8_t* private_buffer = nullptr;
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size_t private_buffer_length = 0;
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std::shared_ptr<LicensePrivate> private_data{};
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uint64_t crypt_seed = 0;
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std::vector<std::shared_ptr<const HierarchyEntry>> _hierarchy{};
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bool generate_keypair(uint8_t* /* private key */, uint8_t* /* public key */);
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void _register_raw_private_key(size_t /* index */, uint8_t* /* key */);
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};
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struct LicensePrivateWriteOptions {
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int precalculated_key_index = -2; /* -2 => Do not write any private keys; -1 => Write everything */
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};
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struct LicensePrivate {
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public:
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static std::shared_ptr<LicensePrivate> read(const std::shared_ptr<License>& /* handle */, uint8_t /* version */, const uint8_t* /* buffer */, size_t /* length */, uint8_t& /* error */);
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static std::shared_ptr<LicensePrivate> create(const std::shared_ptr<License>& /* handle */, int /* precalculated private key index */, const uint8_t* /* precalculated key */);
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bool private_key_chain_valid();
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bool has_meta(const std::string& key) const { return this->meta_data.count(key) > 0; }
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std::string get_meta(const std::string& key) const { return this->meta_data.at(key); }
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void set_meta(const std::string& key, const std::string& value) { this->meta_data[key] = value; }
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/* if target is null just increase the offset! */
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bool write(uint8_t* /* target */, size_t& /* offset */, size_t /* length */, const LicensePrivateWriteOptions& /* options */);
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void register_raw_private_key(uint8_t /* index */, const uint8_t* /* key */);
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bool has_raw_private_key(uint8_t /* index */) const;
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bool private_key_calculable(int /* index */) const;
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bool calculate_private_key(uint8_t* /* response */, uint8_t /* index */) const;
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private:
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std::weak_ptr<License> _handle;
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LicensePrivate() = default;
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int precalculated_private_key_index = -2; /* -2 means not set, -1 means root key */
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std::array<uint8_t, 32> precalculated_private_key{};
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std::map<uint8_t, std::array<uint8_t, 32>> private_keys{};
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std::map<std::string, std::string> meta_data{};
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};
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namespace hierarchy {
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struct BodyInterpreter;
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}
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struct HierarchyEntry {
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friend struct hierarchy::BodyInterpreter;
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public:
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~HierarchyEntry();
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static std::shared_ptr<const HierarchyEntry> read(const uint8_t* /* buffer */, size_t& /* offset */, size_t /* max size */);
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bool write(uint8_t* /* buffer */, size_t& /* offset */, size_t /* max size */) const;
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inline size_t write_length() const { return 43 + this->read_body_length; }
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inline uint8_t entry_type() const { return this->_entry_type; }
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template <typename T = std::chrono::system_clock>
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inline typename T::time_point begin_timestamp() const { return typename T::time_point{} + std::chrono::minutes(this->_timestamp_begin); }
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template <typename T = std::chrono::system_clock>
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inline typename T::time_point end_timestamp() const { return typename T::time_point{} + std::chrono::minutes(this->_timestamp_end); }
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inline const std::array<uint8_t, 32>& public_key() const { return this->_public_key; }
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inline std::array<uint8_t, 32>& public_key() {
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this->_hash_set = false;
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return this->_public_key;
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}
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inline const uint8_t* body() const { return this->read_body; }
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inline const size_t body_length() const { return this->read_body_length; }
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template <typename I>
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inline I interpret_as() const {
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assert(this->interpretable_as<I>());
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return I{this->read_body, this->read_body_length};
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}
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template <typename I>
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inline bool interpretable_as() const { return I::_type == this->_entry_type; }
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inline bool hash(uint8_t* /* hash result [64] */) const;
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protected:
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template <typename T = std::chrono::system_clock>
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HierarchyEntry(uint8_t type, const uint8_t* public_key, const typename T::time_point& begin, const typename T::time_point& end) {
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this->_entry_type = type;
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memcpy(this->_public_key.data(), public_key, this->_public_key.size());
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this->_timestamp_begin = std::chrono::floor<std::chrono::minutes>(begin.time_since_epoch()).count();
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this->_timestamp_end = std::chrono::floor<std::chrono::minutes>(end.time_since_epoch()).count();
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}
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private:
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HierarchyEntry() = default;
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mutable std::array<uint8_t, 64> _hash{};
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mutable bool _hash_set = false;
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uint8_t _entry_type = 0;
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std::array<uint8_t, 32> _public_key{};
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uint32_t _timestamp_begin = 0; /* Minutes since epoch! */
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uint32_t _timestamp_end = 0; /* Minutes since epoch! */
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uint8_t* read_body = nullptr;
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size_t read_body_length = 0;
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bool allocate_read_body(size_t);
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};
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namespace hierarchy {
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struct type {
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enum value : uint8_t {
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Intermediate = 1,
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Server = 2,
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Ephemeral = 8
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};
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static constexpr const char* name(const value& value) {
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switch (value) {
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case Intermediate:
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return "Intermediate";
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case Server:
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return "Server";
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case Ephemeral:
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return "Ephemeral";
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default:
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return "Unknown";
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}
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}
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};
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struct BodyInterpreter {
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public:
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BodyInterpreter() = delete;
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protected:
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template <typename T>
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static std::shared_ptr<HierarchyEntry> _create(
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const uint8_t *pub_key,
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const std::chrono::system_clock::time_point &begin,
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const std::chrono::system_clock::time_point &end,
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size_t buffer_size, uint8_t*& buffer_ptr
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) {
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auto result = std::shared_ptr<HierarchyEntry>(new HierarchyEntry{T::_type, pub_key, begin, end});
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if(!result || !result->allocate_read_body(buffer_size)) return nullptr;
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result->read_body_length = buffer_size;
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buffer_ptr = result->read_body;
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return result;
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}
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BodyInterpreter(const uint8_t* memory, size_t length) { this->_memory = memory; this->_length = length; }
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const uint8_t* _memory = nullptr;
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size_t _length = 0;
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};
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struct Intermediate : public BodyInterpreter {
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public:
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static constexpr uint8_t _type = type::Intermediate;
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static std::shared_ptr<const HierarchyEntry> create(
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const uint8_t* /* public key */,
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const std::chrono::system_clock::time_point& /* begin */,
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const std::chrono::system_clock::time_point& /* end */,
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const std::string& /* description */
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);
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std::string_view description();
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private:
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Intermediate(const uint8_t* memory, size_t length) : BodyInterpreter(memory, length) {}
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};
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struct Server : public BodyInterpreter {
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public:
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static constexpr uint8_t _type = type::Server;
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static std::shared_ptr<const HierarchyEntry> create(
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const uint8_t* /* public key */,
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const std::chrono::system_clock::time_point& /* begin */,
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const std::chrono::system_clock::time_point& /* end */,
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const std::string& /* email */,
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const std::optional<std::string>& /* value */
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);
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std::string_view contact_email();
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bool has_username();
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std::string_view username();
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private:
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Server(const uint8_t* memory, size_t length) : BodyInterpreter(memory, length) {}
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};
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struct Ephemeral : public BodyInterpreter {
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public:
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static constexpr uint8_t _type = type::Ephemeral;
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static std::shared_ptr<const HierarchyEntry> create(
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const uint8_t* /* public key */,
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const std::chrono::system_clock::time_point& /* begin */,
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const std::chrono::system_clock::time_point& /* end */
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);
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private:
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Ephemeral(const uint8_t* memory, size_t length) : BodyInterpreter(memory, length) {}
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};
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}
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}
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enum LicenseType : uint8_t {
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INVALID,
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DEMO,
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PREMIUM,
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HOSTER,
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PRIVATE,
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};
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inline bool isPremiumLicense(LicenseType type){ return type == HOSTER || type == PREMIUM || type == PRIVATE; }
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#define LT_NAMES {"Invalid", "Demo", "Premium", "Hoster", "Private"};
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extern std::string LicenseTypeNames[5];
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struct License {
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LicenseHeader header;
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//Crypted part
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struct {
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LicenseType type;
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int64_t endTimestamp;
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const char licenceKey[64]; //The actual key
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const char licenceOwner[64];
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} __attribute__ ((__packed__)) data;
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inline std::string key() { return std::string(data.licenceKey, 64); }
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inline std::chrono::time_point<std::chrono::system_clock> end() { return std::chrono::system_clock::time_point() + std::chrono::milliseconds(this->data.endTimestamp); }
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inline std::string owner() { return std::string(this->data.licenceOwner); } //Scopetita
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inline bool isValid() { return data.endTimestamp == 0 || std::chrono::system_clock::now() < this->end(); }
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inline bool isPremium(){ return isPremiumLicense(data.type); }
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} __attribute__ ((__packed__));
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struct LicenseInfo {
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LicenseType type;
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std::string username;
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std::string first_name;
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std::string last_name;
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std::string email;
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std::chrono::system_clock::time_point start;
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std::chrono::system_clock::time_point end;
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std::chrono::system_clock::time_point creation;
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bool deleted = false;
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inline bool isValid() { return (end.time_since_epoch().count() == 0 || std::chrono::system_clock::now() < this->end); }
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};
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extern std::shared_ptr<License> readLocalLicence(const std::string &, std::string &);
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extern std::string exportLocalLicense(const std::shared_ptr<License>&);
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extern std::string createLocalLicence(LicenseType type, std::chrono::time_point<std::chrono::system_clock> until, std::string licenseOwner);
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namespace protocol {
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enum RequestState {
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UNCONNECTED,
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CONNECTING,
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HANDSCAKE,
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SERVER_VALIDATION,
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LICENSE_INFO,
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PROPERTY_ADJUSTMENT,
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MANAGER_AUTHORIZATION,
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MANAGER_CONNECTED,
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DISCONNECTING
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};
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enum PacketType : uint8_t {
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PACKET_CLIENT_HANDSHAKE,
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PACKET_SERVER_HANDSHAKE,
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PACKET_CLIENT_SERVER_VALIDATION,
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PACKET_SERVER_VALIDATION_RESPONSE,
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PACKET_CLIENT_PROPERTY_ADJUSTMENT,
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PACKET_SERVER_PROPERTY_ADJUSTMENT,
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PACKET_CLIENT_AUTH_REQUEST,
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PACKET_SERVER_AUTH_RESPONSE,
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PACKET_CLIENT_LICENSE_CREATE_REQUEST,
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PACKET_SERVER_LICENSE_CREATE_RESPONSE,
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PACKET_CLIENT_LIST_REQUEST,
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PACKET_SERVER_LIST_RESPONSE,
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PACKET_CLIENT_DELETE_REQUEST,
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PACKET_CLIENT_DELETE_RESPONSE,
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PACKET_PING = 0xF0,
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PACKET_DISCONNECT = 0xFF
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};
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struct packet {
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struct {
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PacketType packetId;
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mutable uint16_t length;
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} header;
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std::string data;
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inline void prepare() const {
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this->header.length = (uint16_t) data.length();
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}
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packet(PacketType packetId, std::string data) : data(std::move(data)), header({packetId, 0}) {}
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#ifdef GOOGLE_PROTOBUF_MESSAGE_H__
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packet(PacketType packetId, const ::google::protobuf::Message&);
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#endif
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packet(PacketType packetId, nullptr_t);
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};
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}
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}
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//DEFINE_TRANSFORMS(license::LicenseType, uint8_t);
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