Add generate_from_view_key RPC method

src/wallet/wallet_rpc_server.cpp

@@ -3129,6 +3129,158 @@ namespace tools
     }
   }
   //------------------------------------------------------------------------------------------------------------------------------
+  bool wallet_rpc_server::on_generate_from_view_key(const wallet_rpc::COMMAND_RPC_GENERATE_FROM_VIEW_KEY::request &req, wallet_rpc::COMMAND_RPC_GENERATE_FROM_VIEW_KEY::response &res, epee::json_rpc::error &er, const connection_context *ctx)
+  {
+    if (m_wallet_dir.empty())
+    {
+      er.code = WALLET_RPC_ERROR_CODE_NO_WALLET_DIR;
+      er.message = "No wallet dir configured";
+      return false;
+    }
+
+    // early check for mandatory fields
+    if (req.filename.empty())
+    {
+      er.code = WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR;
+      er.message = "field 'filename' is mandatory. Please provide a filename to save the restored wallet to.";
+      return false;
+    }
+    if (req.viewkey.empty())
+    {
+      er.code = WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR;
+      er.message = "field 'viewkey' is mandatory. Please provide a view key you want to restore from.";
+      return false;
+    }
+    if (req.address.empty())
+    {
+      er.code = WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR;
+      er.message = "field 'address' is mandatory. Please provide a public address.";
+      return false;
+    }
+
+    namespace po = boost::program_options;
+    po::variables_map vm2;
+    const char *ptr = strchr(req.filename.c_str(), '/');
+  #ifdef _WIN32
+    if (!ptr)
+      ptr = strchr(req.filename.c_str(), '\\');
+    if (!ptr)
+      ptr = strchr(req.filename.c_str(), ':');
+  #endif
+    if (ptr)
+    {
+      er.code = WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR;
+      er.message = "Invalid filename";
+      return false;
+    }
+    std::string wallet_file = m_wallet_dir + "/" + req.filename;
+    // check if wallet file already exists
+    if (!wallet_file.empty())
+    {
+      try
+      {
+        boost::system::error_code ignored_ec;
+        THROW_WALLET_EXCEPTION_IF(boost::filesystem::exists(wallet_file, ignored_ec), error::file_exists, wallet_file);
+      }
+      catch (const std::exception &e)
+      {
+        er.code = WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR;
+        er.message = "Wallet already exists.";
+        return false;
+      }
+    }
+
+    {
+      po::options_description desc("dummy");
+      const command_line::arg_descriptor<std::string, true> arg_password = {"password", "password"};
+      const char *argv[4];
+      int argc = 3;
+      argv[0] = "wallet-rpc";
+      argv[1] = "--password";
+      argv[2] = req.password.c_str();
+      argv[3] = NULL;
+      vm2 = *m_vm;
+      command_line::add_arg(desc, arg_password);
+      po::store(po::parse_command_line(argc, argv, desc), vm2);
+    }
+
+    auto rc = tools::wallet2::make_new(vm2, true, nullptr);
+    std::unique_ptr<wallet2> wal;
+    wal = std::move(rc.first);
+    if (!wal)
+    {
+      er.code = WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR;
+      er.message = "Failed to create wallet";
+      return false;
+    }
+
+    cryptonote::address_parse_info info;
+    if(!get_account_address_from_str(info, wal->nettype(), req.address))
+    {
+      er.code = WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR;
+      er.message = "Failed to parse public address";
+      return false;
+    }
+
+    epee::wipeable_string password = rc.second.password();
+    epee::wipeable_string viewkey_string = req.viewkey;
+    crypto::secret_key viewkey;
+    if (!viewkey_string.hex_to_pod(unwrap(unwrap(viewkey))))
+    {
+      er.code = WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR;
+      er.message = "Failed to parse view key secret key";
+      return false;
+    }
+
+    try
+    {
+      wal->generate(wallet_file, std::move(rc.second).password(), info.address, viewkey, false);
+      MINFO("Wallet has been restored.\n");
+    }
+    catch (const std::exception &e)
+    {
+      handle_rpc_exception(std::current_exception(), er, WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR);
+      return false;
+    }
+
+    if (!wal)
+    {
+      er.code = WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR;
+      er.message = "Failed to generate wallet";
+      return false;
+    }
+
+    // set blockheight if given
+    try
+    {
+      wal->set_refresh_from_block_height(req.restore_height);
+      wal->rewrite(wallet_file, password);
+    }
+    catch (const std::exception &e)
+    {
+      handle_rpc_exception(std::current_exception(), er, WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR);
+      return false;
+    }
+
+    if (m_wallet)
+    {
+      try
+      {
+        m_wallet->store();
+      }
+      catch (const std::exception &e)
+      {
+        handle_rpc_exception(std::current_exception(), er, WALLET_RPC_ERROR_CODE_UNKNOWN_ERROR);
+        return false;
+      }
+      delete m_wallet;
+    }
+    m_wallet = wal.release();
+    res.address = m_wallet->get_account().get_public_address_str(m_wallet->nettype());
+    res.info = "Wallet has been restored successfully.";
+    return true;
+  }
+  //------------------------------------------------------------------------------------------------------------------------------
   bool wallet_rpc_server::on_generate_from_keys(const wallet_rpc::COMMAND_RPC_GENERATE_FROM_KEYS::request &req, wallet_rpc::COMMAND_RPC_GENERATE_FROM_KEYS::response &res, epee::json_rpc::error &er, const connection_context *ctx)
   {
     if (m_wallet_dir.empty())

src/wallet/wallet_rpc_server.h

@@ -137,6 +137,7 @@ namespace tools
         MAP_JON_RPC_WE("open_wallet",        on_open_wallet,        wallet_rpc::COMMAND_RPC_OPEN_WALLET)
         MAP_JON_RPC_WE("close_wallet",       on_close_wallet,       wallet_rpc::COMMAND_RPC_CLOSE_WALLET)
         MAP_JON_RPC_WE("change_wallet_password",        on_change_wallet_password,        wallet_rpc::COMMAND_RPC_CHANGE_WALLET_PASSWORD)
+        MAP_JON_RPC_WE("generate_from_view_key", on_generate_from_view_key, wallet_rpc::COMMAND_RPC_GENERATE_FROM_VIEW_KEY)
         MAP_JON_RPC_WE("generate_from_keys", on_generate_from_keys, wallet_rpc::COMMAND_RPC_GENERATE_FROM_KEYS)
         MAP_JON_RPC_WE("restore_deterministic_wallet",      on_restore_deterministic_wallet,      wallet_rpc::COMMAND_RPC_RESTORE_DETERMINISTIC_WALLET)
         MAP_JON_RPC_WE("is_multisig",        on_is_multisig,        wallet_rpc::COMMAND_RPC_IS_MULTISIG)
@@ -217,6 +218,7 @@ namespace tools
       bool on_open_wallet(const wallet_rpc::COMMAND_RPC_OPEN_WALLET::request& req, wallet_rpc::COMMAND_RPC_OPEN_WALLET::response& res, epee::json_rpc::error& er, const connection_context *ctx = NULL);
       bool on_close_wallet(const wallet_rpc::COMMAND_RPC_CLOSE_WALLET::request& req, wallet_rpc::COMMAND_RPC_CLOSE_WALLET::response& res, epee::json_rpc::error& er, const connection_context *ctx = NULL);
       bool on_change_wallet_password(const wallet_rpc::COMMAND_RPC_CHANGE_WALLET_PASSWORD::request& req, wallet_rpc::COMMAND_RPC_CHANGE_WALLET_PASSWORD::response& res, epee::json_rpc::error& er, const connection_context *ctx = NULL);
+      bool on_generate_from_view_key(const wallet_rpc::COMMAND_RPC_GENERATE_FROM_VIEW_KEY::request& req, wallet_rpc::COMMAND_RPC_GENERATE_FROM_VIEW_KEY::response& res, epee::json_rpc::error& er, const connection_context *ctx = NULL);
       bool on_generate_from_keys(const wallet_rpc::COMMAND_RPC_GENERATE_FROM_KEYS::request& req, wallet_rpc::COMMAND_RPC_GENERATE_FROM_KEYS::response& res, epee::json_rpc::error& er, const connection_context *ctx = NULL);
       bool on_restore_deterministic_wallet(const wallet_rpc::COMMAND_RPC_RESTORE_DETERMINISTIC_WALLET::request& req, wallet_rpc::COMMAND_RPC_RESTORE_DETERMINISTIC_WALLET::response& res, epee::json_rpc::error& er, const connection_context *ctx = NULL);
       bool on_is_multisig(const wallet_rpc::COMMAND_RPC_IS_MULTISIG::request& req, wallet_rpc::COMMAND_RPC_IS_MULTISIG::response& res, epee::json_rpc::error& er, const connection_context *ctx = NULL);

src/wallet/wallet_rpc_server_commands_defs.h

@@ -1934,6 +1934,37 @@ namespace wallet_rpc
     };
   };
 
+  struct COMMAND_RPC_GENERATE_FROM_VIEW_KEY
+  {
+    struct request
+    {
+      uint64_t restore_height;
+      std::string filename;
+      std::string address;
+      std::string viewkey;
+      std::string password;
+
+      BEGIN_KV_SERIALIZE_MAP()
+      KV_SERIALIZE_OPT(restore_height, (uint64_t)0)
+      KV_SERIALIZE(filename)
+      KV_SERIALIZE(address)
+      KV_SERIALIZE(viewkey)
+      KV_SERIALIZE(password)
+      END_KV_SERIALIZE_MAP()
+    };
+
+    struct response
+    {
+      std::string address;
+      std::string info;
+
+      BEGIN_KV_SERIALIZE_MAP()
+      KV_SERIALIZE(address)
+      KV_SERIALIZE(info)
+      END_KV_SERIALIZE_MAP()
+    };
+  };
+
   struct COMMAND_RPC_GENERATE_FROM_KEYS
   {
     struct request