wallet: fix --generate-from-json using wrong password

src/common/password.cpp

@@ -221,6 +221,10 @@ namespace tools
     : m_password(std::move(password)) 
   {
   }
+  password_container::password_container(const epee::wipeable_string& password) noexcept
+    : m_password(password)
+  {
+  }
 
   password_container::~password_container() noexcept
   {

src/common/password.h

@@ -47,6 +47,7 @@ namespace tools
 
     //! `password` is used as password
     password_container(std::string&& password) noexcept;
+    password_container(const epee::wipeable_string& password) noexcept;
 
     //! \return A password from stdin TTY prompt or `std::cin` pipe.
     static boost::optional<password_container> prompt(bool verify, const char *mesage = "Password", bool hide_input = true);

src/simplewallet/simplewallet.cpp

@@ -3275,7 +3275,9 @@ bool simple_wallet::init(const boost::program_options::variables_map& vm)
     {
       try
       {
-        m_wallet = tools::wallet2::make_from_json(vm, false, m_generate_from_json, password_prompter);
+        auto rc = tools::wallet2::make_from_json(vm, false, m_generate_from_json, password_prompter);
+        m_wallet = std::move(rc.first);
+        password = rc.second.password();
         m_wallet_file = m_wallet->path();
       }
       catch (const std::exception &e)

src/wallet/wallet2.cpp

@@ -313,7 +313,7 @@ boost::optional<tools::password_container> get_password(const boost::program_opt
   return password_prompter(verify ? tr("Enter a new password for the wallet") : tr("Wallet password"), verify);
 }
 
-std::unique_ptr<tools::wallet2> generate_from_json(const std::string& json_file, const boost::program_options::variables_map& vm, bool unattended, const options& opts, const std::function<boost::optional<tools::password_container>(const char *, bool)> &password_prompter)
+std::pair<std::unique_ptr<tools::wallet2>, tools::password_container> generate_from_json(const std::string& json_file, const boost::program_options::variables_map& vm, bool unattended, const options& opts, const std::function<boost::optional<tools::password_container>(const char *, bool)> &password_prompter)
 {
   const bool testnet = command_line::get_arg(vm, opts.testnet);
   const bool stagenet = command_line::get_arg(vm, opts.stagenet);
@@ -323,6 +323,7 @@ std::unique_ptr<tools::wallet2> generate_from_json(const std::string& json_file,
   false. Gcc will coerce this into unique_ptr(nullptr), but clang correctly
   fails. This large wrapper is for the use of that macro */
   std::unique_ptr<tools::wallet2> wallet;
+  epee::wipeable_string password;
   const auto do_generate = [&]() -> bool {
     std::string buf;
     if (!epee::file_io_utils::load_file_to_string(json_file, buf)) {
@@ -460,10 +461,12 @@ std::unique_ptr<tools::wallet2> generate_from_json(const std::string& json_file,
       if (!field_seed.empty())
       {
         wallet->generate(field_filename, field_password, recovery_key, recover, false, create_address_file);
+        password = field_password;
       }
       else if (field_viewkey.empty() && !field_spendkey.empty())
       {
         wallet->generate(field_filename, field_password, spendkey, recover, false, create_address_file);
+        password = field_password;
       }
       else
       {
@@ -490,6 +493,7 @@ std::unique_ptr<tools::wallet2> generate_from_json(const std::string& json_file,
             THROW_WALLET_EXCEPTION(tools::error::wallet_internal_error, tools::wallet2::tr("Address must be specified in order to create watch-only wallet"));
           }
           wallet->generate(field_filename, field_password, address, viewkey, create_address_file);
+          password = field_password;
         }
         else
         {
@@ -497,6 +501,7 @@ std::unique_ptr<tools::wallet2> generate_from_json(const std::string& json_file,
             THROW_WALLET_EXCEPTION(tools::error::wallet_internal_error, tools::wallet2::tr("failed to verify spend key secret key"));
           }
           wallet->generate(field_filename, field_password, address, spendkey, viewkey, create_address_file);
+          password = field_password;
         }
       }
     }
@@ -509,9 +514,9 @@ std::unique_ptr<tools::wallet2> generate_from_json(const std::string& json_file,
 
   if (do_generate())
   {
-    return wallet;
+    return {std::move(wallet), tools::password_container(password)};
   }
-  return nullptr;
+  return {nullptr, tools::password_container{}};
 }
 
 static void throw_on_rpc_response_error(const boost::optional<std::string> &status, const char *method)
@@ -854,7 +859,7 @@ void wallet2::init_options(boost::program_options::options_description& desc_par
   command_line::add_arg(desc_params, opts.tx_notify);
 }
 
-std::unique_ptr<wallet2> wallet2::make_from_json(const boost::program_options::variables_map& vm, bool unattended, const std::string& json_file, const std::function<boost::optional<tools::password_container>(const char *, bool)> &password_prompter)
+std::pair<std::unique_ptr<wallet2>, tools::password_container> wallet2::make_from_json(const boost::program_options::variables_map& vm, bool unattended, const std::string& json_file, const std::function<boost::optional<tools::password_container>(const char *, bool)> &password_prompter)
 {
   const options opts{};
   return generate_from_json(json_file, vm, unattended, opts, password_prompter);

src/wallet/wallet2.h

@@ -177,7 +177,7 @@ namespace tools
     static void init_options(boost::program_options::options_description& desc_params);
 
     //! Uses stdin and stdout. Returns a wallet2 if no errors.
-    static std::unique_ptr<wallet2> make_from_json(const boost::program_options::variables_map& vm, bool unattended, const std::string& json_file, const std::function<boost::optional<password_container>(const char *, bool)> &password_prompter);
+    static std::pair<std::unique_ptr<wallet2>, password_container> make_from_json(const boost::program_options::variables_map& vm, bool unattended, const std::string& json_file, const std::function<boost::optional<password_container>(const char *, bool)> &password_prompter);
 
     //! Uses stdin and stdout. Returns a wallet2 and password for `wallet_file` if no errors.
     static std::pair<std::unique_ptr<wallet2>, password_container>

src/wallet/wallet_rpc_server.cpp

@@ -3352,7 +3352,8 @@ public:
       {
         try
         {
-          wal = tools::wallet2::make_from_json(vm, true, from_json, password_prompt);
+          auto rc = tools::wallet2::make_from_json(vm, true, from_json, password_prompt);
+          wal = std::move(rc.first);
         }
         catch (const std::exception &e)
         {