Wallet API: add support for wallet creation from hardware device

src/wallet/api/wallet.cpp

@@ -372,6 +372,7 @@ WalletImpl::WalletImpl(NetworkType nettype)
     , m_trustedDaemon(false)
     , m_wallet2Callback(nullptr)
     , m_recoveringFromSeed(false)
+    , m_recoveringFromDevice(false)
     , m_synchronized(false)
     , m_rebuildWalletCache(false)
     , m_is_connected(false)
@@ -419,6 +420,7 @@ bool WalletImpl::create(const std::string &path, const std::string &password, co
 
     clearStatus();
     m_recoveringFromSeed = false;
+    m_recoveringFromDevice = false;
     bool keys_file_exists;
     bool wallet_file_exists;
     tools::wallet2::wallet_exists(path, keys_file_exists, wallet_file_exists);
@@ -621,11 +623,28 @@ bool WalletImpl::recoverFromKeysWithPassword(const std::string &path,
     return true;
 }
 
+bool WalletImpl::recoverFromDevice(const std::string &path, const std::string &password, const std::string &device_name)
+{
+    clearStatus();
+    m_recoveringFromSeed = false;
+    m_recoveringFromDevice = true;
+    try
+    {
+        m_wallet->restore(path, password, device_name);
+        LOG_PRINT_L1("Generated new wallet from device: " + device_name);
+    }
+    catch (const std::exception& e) {
+        setStatusError(string(tr("failed to generate new wallet: ")) + e.what());
+        return false;
+    }
+    return true;
+}
 
 bool WalletImpl::open(const std::string &path, const std::string &password)
 {
     clearStatus();
     m_recoveringFromSeed = false;
+    m_recoveringFromDevice = false;
     try {
         // TODO: handle "deprecated"
         // Check if wallet cache exists
@@ -663,6 +682,7 @@ bool WalletImpl::recover(const std::string &path, const std::string &password, c
     }
 
     m_recoveringFromSeed = true;
+    m_recoveringFromDevice = false;
     crypto::secret_key recovery_key;
     std::string old_language;
     if (!crypto::ElectrumWords::words_to_bytes(seed, recovery_key, old_language)) {
@@ -884,6 +904,16 @@ void WalletImpl::setRecoveringFromSeed(bool recoveringFromSeed)
     m_recoveringFromSeed = recoveringFromSeed;
 }
 
+void WalletImpl::setRecoveringFromDevice(bool recoveringFromDevice)
+{
+    m_recoveringFromDevice = recoveringFromDevice;
+}
+
+void WalletImpl::setSubaddressLookahead(uint32_t major, uint32_t minor)
+{
+    m_wallet->set_subaddress_lookahead(major, minor);
+}
+
 uint64_t WalletImpl::balance(uint32_t accountIndex) const
 {
     return m_wallet->balance(accountIndex);
@@ -1996,7 +2026,7 @@ bool WalletImpl::isNewWallet() const
     // with the daemon (pull hashes instead of pull blocks).
     // If wallet cache is rebuilt, creation height stored in .keys is used.
     // Watch only wallet is a copy of an existing wallet. 
-    return !(blockChainHeight() > 1 || m_recoveringFromSeed || m_rebuildWalletCache) && !watchOnly();
+    return !(blockChainHeight() > 1 || m_recoveringFromSeed || m_recoveringFromDevice || m_rebuildWalletCache) && !watchOnly();
 }
 
 bool WalletImpl::doInit(const string &daemon_address, uint64_t upper_transaction_size_limit, bool ssl)

src/wallet/api/wallet.h

@@ -76,6 +76,9 @@ public:
                             const std::string &address_string, 
                             const std::string &viewkey_string,
                             const std::string &spendkey_string = "");
+    bool recoverFromDevice(const std::string &path,
+                           const std::string &password,
+                           const std::string &device_name);
     bool close(bool store = true);
     std::string seed() const;
     std::string getSeedLanguage() const;
@@ -115,6 +118,8 @@ public:
     void setRefreshFromBlockHeight(uint64_t refresh_from_block_height);
     uint64_t getRefreshFromBlockHeight() const { return m_wallet->get_refresh_from_block_height(); };
     void setRecoveringFromSeed(bool recoveringFromSeed);
+    void setRecoveringFromDevice(bool recoveringFromDevice) override;
+    void setSubaddressLookahead(uint32_t major, uint32_t minor) override;
     bool watchOnly() const;
     bool rescanSpent();
     NetworkType nettype() const {return static_cast<NetworkType>(m_wallet->nettype());}
@@ -232,6 +237,7 @@ private:
     // so it shouldn't be considered as new and pull blocks (slow-refresh)
     // instead of pulling hashes (fast-refresh)
     std::atomic<bool>   m_recoveringFromSeed;
+    std::atomic<bool>   m_recoveringFromDevice;
     std::atomic<bool>   m_synchronized;
     std::atomic<bool>   m_rebuildWalletCache;
     // cache connection status to avoid unnecessary RPC calls

src/wallet/api/wallet2_api.h

@@ -509,6 +509,21 @@ struct Wallet
     */
     virtual void setRecoveringFromSeed(bool recoveringFromSeed) = 0;
 
+   /*!
+    * \brief setRecoveringFromDevice - set state to recovering from device
+    *
+    * \param recoveringFromDevice - true/false
+    */
+    virtual void setRecoveringFromDevice(bool recoveringFromDevice) = 0;
+
+    /*!
+     * \brief setSubaddressLookahead - set size of subaddress lookahead
+     *
+     * \param major - size fot the major index
+     * \param minor - size fot the minor index
+     */
+    virtual void setSubaddressLookahead(uint32_t major, uint32_t minor) = 0;
+
     /**
      * @brief connectToDaemon - connects to the daemon. TODO: check if it can be removed
      * @return
@@ -1014,6 +1029,23 @@ struct WalletManager
         return createWalletFromKeys(path, language, testnet ? TESTNET : MAINNET, restoreHeight, addressString, viewKeyString, spendKeyString);
     }
 
+    /*!
+     * \brief  creates wallet using hardware device.
+     * \param  path                 Name of wallet file to be created
+     * \param  password             Password of wallet file
+     * \param  nettype              Network type
+     * \param  deviceName           Device name
+     * \param  restoreHeight        restore from start height (0 sets to current height)
+     * \param  subaddressLookahead  Size of subaddress lookahead (empty sets to some default low value)
+     * \return                      Wallet instance (Wallet::status() needs to be called to check if recovered successfully)
+     */
+    virtual Wallet * createWalletFromDevice(const std::string &path,
+                                            const std::string &password,
+                                            NetworkType nettype,
+                                            const std::string &deviceName,
+                                            uint64_t restoreHeight = 0,
+                                            const std::string &subaddressLookahead = "") = 0;
+
     /*!
      * \brief Closes wallet. In case operation succeeded, wallet object deleted. in case operation failed, wallet object not deleted
      * \param wallet        previously opened / created wallet instance

src/wallet/api/wallet_manager.cpp

@@ -114,6 +114,26 @@ Wallet *WalletManagerImpl::createWalletFromKeys(const std::string &path,
     return wallet;
 }
 
+Wallet *WalletManagerImpl::createWalletFromDevice(const std::string &path,
+                                                  const std::string &password,
+                                                  NetworkType nettype,
+                                                  const std::string &deviceName,
+                                                  uint64_t restoreHeight,
+                                                  const std::string &subaddressLookahead)
+{
+    WalletImpl * wallet = new WalletImpl(nettype);
+    if(restoreHeight > 0){
+        wallet->setRefreshFromBlockHeight(restoreHeight);
+    }
+    auto lookahead = tools::parse_subaddress_lookahead(subaddressLookahead);
+    if (lookahead)
+    {
+        wallet->setSubaddressLookahead(lookahead->first, lookahead->second);
+    }
+    wallet->recoverFromDevice(path, password, deviceName);
+    return wallet;
+}
+
 bool WalletManagerImpl::closeWallet(Wallet *wallet, bool store)
 {
     WalletImpl * wallet_ = dynamic_cast<WalletImpl*>(wallet);

src/wallet/api/wallet_manager.h

@@ -64,6 +64,12 @@ public:
                                                     const std::string &addressString,
                                                     const std::string &viewKeyString,
                                                     const std::string &spendKeyString = "");
+    virtual Wallet * createWalletFromDevice(const std::string &path,
+                                            const std::string &password,
+                                            NetworkType nettype,
+                                            const std::string &deviceName,
+                                            uint64_t restoreHeight = 0,
+                                            const std::string &subaddressLookahead = "") override;
     virtual bool closeWallet(Wallet *wallet, bool store = true);
     bool walletExists(const std::string &path);
     bool verifyWalletPassword(const std::string &keys_file_name, const std::string &password, bool no_spend_key) const;