wallet2: check wallet compatibility with daemon's hard fork version [release]

src/cryptonote_basic/hardfork.h

@@ -231,6 +231,11 @@ namespace cryptonote
      */
     uint64_t get_window_size() const { return window_size; }
 
+    /**
+     * @brief returns info for all known hard forks
+     */
+    const std::vector<hardfork_t>& get_hardforks() const { return heights; }
+
   private:
 
     uint8_t get_block_version(uint64_t height) const;

src/cryptonote_core/blockchain.h

@@ -899,6 +899,13 @@ namespace cryptonote
      */
     uint64_t get_earliest_ideal_height_for_version(uint8_t version) const { return m_hardfork->get_earliest_ideal_height_for_version(version); }
 
+    /**
+     * @brief returns info for all known hard forks
+     *
+     * @return the hardforks
+     */
+    const std::vector<hardfork_t>& get_hardforks() const { return m_hardfork->get_hardforks(); }
+
     /**
      * @brief get information about hardfork voting for a version
      *

src/rpc/core_rpc_server.cpp

@@ -2861,6 +2861,10 @@ namespace cryptonote
 
     res.version = CORE_RPC_VERSION;
     res.release = MONERO_VERSION_IS_RELEASE;
+    res.current_height = m_core.get_current_blockchain_height();
+    res.target_height = m_p2p.get_payload_object().is_synchronized() ? 0 : m_core.get_target_blockchain_height();
+    for (const auto &hf : m_core.get_blockchain_storage().get_hardforks())
+       res.hard_forks.push_back({hf.version, hf.height});
     res.status = CORE_RPC_STATUS_OK;
     return true;
   }

src/rpc/core_rpc_server_commands_defs.h

@@ -88,7 +88,7 @@ namespace cryptonote
 // advance which version they will stop working with
 // Don't go over 32767 for any of these
 #define CORE_RPC_VERSION_MAJOR 3
-#define CORE_RPC_VERSION_MINOR 10
+#define CORE_RPC_VERSION_MINOR 11
 #define MAKE_CORE_RPC_VERSION(major,minor) (((major)<<16)|(minor))
 #define CORE_RPC_VERSION MAKE_CORE_RPC_VERSION(CORE_RPC_VERSION_MAJOR, CORE_RPC_VERSION_MINOR)
 
@@ -2123,15 +2123,34 @@ namespace cryptonote
     };
     typedef epee::misc_utils::struct_init<request_t> request;
 
+    struct hf_entry
+    {
+      uint8_t hf_version;
+      uint64_t height;
+
+      bool operator==(const hf_entry& hfe) const { return hf_version == hfe.hf_version && height == hfe.height; }
+
+      BEGIN_KV_SERIALIZE_MAP()
+        KV_SERIALIZE(hf_version)
+        KV_SERIALIZE(height)
+      END_KV_SERIALIZE_MAP()
+    };
+
     struct response_t: public rpc_response_base
     {
       uint32_t version;
       bool release;
+      uint64_t current_height;
+      uint64_t target_height;
+      std::vector<hf_entry> hard_forks;
 
       BEGIN_KV_SERIALIZE_MAP()
         KV_SERIALIZE_PARENT(rpc_response_base)
         KV_SERIALIZE(version)
         KV_SERIALIZE(release)
+        KV_SERIALIZE_OPT(current_height, (uint64_t)0)
+        KV_SERIALIZE_OPT(target_height, (uint64_t)0)
+        KV_SERIALIZE_OPT(hard_forks, std::vector<hf_entry>())
       END_KV_SERIALIZE_MAP()
     };
     typedef epee::misc_utils::struct_init<response_t> response;

src/simplewallet/simplewallet.cpp

@@ -181,7 +181,6 @@ namespace
   const command_line::arg_descriptor<bool> arg_restore_from_seed = {"restore-from-seed", sw::tr("alias for --restore-deterministic-wallet"), false};
   const command_line::arg_descriptor<bool> arg_restore_multisig_wallet = {"restore-multisig-wallet", sw::tr("Recover multisig wallet using Electrum-style mnemonic seed"), false};
   const command_line::arg_descriptor<bool> arg_non_deterministic = {"non-deterministic", sw::tr("Generate non-deterministic view and spend keys"), false};
-  const command_line::arg_descriptor<bool> arg_allow_mismatched_daemon_version = {"allow-mismatched-daemon-version", sw::tr("Allow communicating with a daemon that uses a different RPC version"), false};
   const command_line::arg_descriptor<uint64_t> arg_restore_height = {"restore-height", sw::tr("Restore from specific blockchain height"), 0};
   const command_line::arg_descriptor<std::string> arg_restore_date = {"restore-date", sw::tr("Restore from estimated blockchain height on specified date"), ""};
   const command_line::arg_descriptor<bool> arg_do_not_relay = {"do-not-relay", sw::tr("The newly created transaction will not be relayed to the monero network"), false};
@@ -3233,8 +3232,7 @@ bool simple_wallet::scan_tx(const std::vector<std::string> &args)
 }
 
 simple_wallet::simple_wallet()
-  : m_allow_mismatched_daemon_version(false)
-  , m_refresh_progress_reporter(*this)
+  : m_refresh_progress_reporter(*this)
   , m_idle_run(true)
   , m_auto_refresh_enabled(false)
   , m_auto_refresh_refreshing(false)
@@ -4755,7 +4753,6 @@ bool simple_wallet::handle_command_line(const boost::program_options::variables_
   m_restore_deterministic_wallet  = command_line::get_arg(vm, arg_restore_deterministic_wallet) || command_line::get_arg(vm, arg_restore_from_seed);
   m_restore_multisig_wallet       = command_line::get_arg(vm, arg_restore_multisig_wallet);
   m_non_deterministic             = command_line::get_arg(vm, arg_non_deterministic);
-  m_allow_mismatched_daemon_version = command_line::get_arg(vm, arg_allow_mismatched_daemon_version);
   m_restore_height                = command_line::get_arg(vm, arg_restore_height);
   m_restore_date                  = command_line::get_arg(vm, arg_restore_date);
   m_do_not_relay                  = command_line::get_arg(vm, arg_do_not_relay);
@@ -4786,20 +4783,28 @@ bool simple_wallet::try_connect_to_daemon(bool silent, uint32_t* version)
   uint32_t version_ = 0;
   if (!version)
     version = &version_;
-  if (!m_wallet->check_connection(version))
+  bool wallet_is_outdated, daemon_is_outdated = false;
+  if (!m_wallet->check_connection(version, NULL, 200000, &wallet_is_outdated, &daemon_is_outdated))
   {
     if (!silent)
     {
       if (m_wallet->is_offline())
         fail_msg_writer() << tr("wallet failed to connect to daemon, because it is set to offline mode");
+      else if (wallet_is_outdated)
+        fail_msg_writer() << tr("wallet failed to connect to daemon, because it is not up to date. ") <<
+          tr("Please make sure you are running the latest wallet.");
+      else if (daemon_is_outdated)
+        fail_msg_writer() << tr("wallet failed to connect to daemon: ") << m_wallet->get_daemon_address() << ". " <<
+          tr("Daemon is not up to date. "
+          "Please make sure the daemon is running the latest version or change the daemon address using the 'set_daemon' command.");
       else
         fail_msg_writer() << tr("wallet failed to connect to daemon: ") << m_wallet->get_daemon_address() << ". " <<
           tr("Daemon either is not started or wrong port was passed. "
           "Please make sure daemon is running or change the daemon address using the 'set_daemon' command.");
     }
     return false;
   }
-  if (!m_allow_mismatched_daemon_version && ((*version >> 16) != CORE_RPC_VERSION_MAJOR))
+  if (!m_wallet->is_mismatched_daemon_version_allowed() && ((*version >> 16) != CORE_RPC_VERSION_MAJOR))
   {
     if (!silent)
       fail_msg_writer() << boost::format(tr("Daemon uses a different RPC major version (%u) than the wallet (%u): %s. Either update one of them, or use --allow-mismatched-daemon-version.")) % (*version>>16) % CORE_RPC_VERSION_MAJOR % m_wallet->get_daemon_address();
@@ -10629,7 +10634,6 @@ int main(int argc, char* argv[])
   command_line::add_arg(desc_params, arg_restore_multisig_wallet );
   command_line::add_arg(desc_params, arg_non_deterministic );
   command_line::add_arg(desc_params, arg_electrum_seed );
-  command_line::add_arg(desc_params, arg_allow_mismatched_daemon_version);
   command_line::add_arg(desc_params, arg_restore_height);
   command_line::add_arg(desc_params, arg_restore_date);
   command_line::add_arg(desc_params, arg_do_not_relay);

src/simplewallet/simplewallet.h

@@ -429,7 +429,6 @@ namespace cryptonote
     bool m_restore_deterministic_wallet;  // recover flag
     bool m_restore_multisig_wallet;  // recover flag
     bool m_non_deterministic;  // old 2-random generation
-    bool m_allow_mismatched_daemon_version;
     bool m_restoring;           // are we restoring, by whatever method?
     uint64_t m_restore_height;  // optional
     bool m_do_not_relay;

src/wallet/api/wallet.cpp

@@ -2173,9 +2173,15 @@ bool WalletImpl::connectToDaemon()
 Wallet::ConnectionStatus WalletImpl::connected() const
 {
     uint32_t version = 0;
-    m_is_connected = m_wallet->check_connection(&version, NULL, DEFAULT_CONNECTION_TIMEOUT_MILLIS);
+    bool wallet_is_outdated, daemon_is_outdated = false;
+    m_is_connected = m_wallet->check_connection(&version, NULL, DEFAULT_CONNECTION_TIMEOUT_MILLIS, &wallet_is_outdated, &daemon_is_outdated);
     if (!m_is_connected)
-        return Wallet::ConnectionStatus_Disconnected;
+    {
+        if (!m_wallet->light_wallet() && (wallet_is_outdated || daemon_is_outdated))
+            return Wallet::ConnectionStatus_WrongVersion;
+        else
+            return Wallet::ConnectionStatus_Disconnected;
+    }
     // Version check is not implemented in light wallets nodes/wallets
     if (!m_wallet->light_wallet() && (version >> 16) != CORE_RPC_VERSION_MAJOR)
         return Wallet::ConnectionStatus_WrongVersion;

src/wallet/node_rpc_proxy.cpp

@@ -82,28 +82,50 @@ void NodeRPCProxy::invalidate()
   m_rpc_payment_seed_hash = crypto::null_hash;
   m_rpc_payment_next_seed_hash = crypto::null_hash;
   m_height_time = 0;
+  m_target_height_time = 0;
   m_rpc_payment_diff = 0;
   m_rpc_payment_credits_per_hash_found = 0;
   m_rpc_payment_height = 0;
   m_rpc_payment_cookie = 0;
+  m_daemon_hard_forks.clear();
 }
 
-boost::optional<std::string> NodeRPCProxy::get_rpc_version(uint32_t &rpc_version)
+boost::optional<std::string> NodeRPCProxy::get_rpc_version(uint32_t &rpc_version, std::vector<std::pair<uint8_t, uint64_t>> &daemon_hard_forks, uint64_t &height, uint64_t &target_height)
 {
   if (m_offline)
     return boost::optional<std::string>("offline");
   if (m_rpc_version == 0)
   {
+    const time_t now = time(NULL);
     cryptonote::COMMAND_RPC_GET_VERSION::request req_t = AUTO_VAL_INIT(req_t);
     cryptonote::COMMAND_RPC_GET_VERSION::response resp_t = AUTO_VAL_INIT(resp_t);
     {
       const boost::lock_guard<boost::recursive_mutex> lock{m_daemon_rpc_mutex};
       bool r = net_utils::invoke_http_json_rpc("/json_rpc", "get_version", req_t, resp_t, m_http_client, rpc_timeout);
       RETURN_ON_RPC_RESPONSE_ERROR(r, epee::json_rpc::error{}, resp_t, "get_version");
     }
+
     m_rpc_version = resp_t.version;
+    m_daemon_hard_forks.clear();
+    for (const auto &hf : resp_t.hard_forks)
+      m_daemon_hard_forks.push_back(std::make_pair(hf.hf_version, hf.height));
+    if (resp_t.current_height > 0 || resp_t.target_height > 0)
+    {
+      m_height = resp_t.current_height;
+      m_target_height = resp_t.target_height;
+      m_height_time = now;
+      m_target_height_time = now;
+    }
   }
+
   rpc_version = m_rpc_version;
+  daemon_hard_forks = m_daemon_hard_forks;
+  boost::optional<std::string> result = get_height(height);
+  if (result)
+    return result;
+  result = get_target_height(target_height);
+  if (result)
+    return result;
   return boost::optional<std::string>();
 }
 
@@ -138,6 +160,7 @@ boost::optional<std::string> NodeRPCProxy::get_info()
     m_adjusted_time = resp_t.adjusted_time;
     m_get_info_time = now;
     m_height_time = now;
+    m_target_height_time = now;
   }
   return boost::optional<std::string>();
 }
@@ -160,6 +183,13 @@ boost::optional<std::string> NodeRPCProxy::get_height(uint64_t &height)
 
 boost::optional<std::string> NodeRPCProxy::get_target_height(uint64_t &height)
 {
+  const time_t now = time(NULL);
+  if (now < m_target_height_time + 30) // re-cache every 30 seconds
+  {
+    height = m_target_height;
+    return boost::optional<std::string>();
+  }
+
   auto res = get_info();
   if (res)
     return res;

src/wallet/node_rpc_proxy.h

@@ -48,7 +48,7 @@ class NodeRPCProxy
   void invalidate();
   void set_offline(bool offline) { m_offline = offline; }
 
-  boost::optional<std::string> get_rpc_version(uint32_t &version);
+  boost::optional<std::string> get_rpc_version(uint32_t &rpc_version, std::vector<std::pair<uint8_t, uint64_t>> &daemon_hard_forks, uint64_t &height, uint64_t &target_height);
   boost::optional<std::string> get_height(uint64_t &height);
   void set_height(uint64_t h);
   boost::optional<std::string> get_target_height(uint64_t &height);
@@ -103,6 +103,8 @@ class NodeRPCProxy
   crypto::hash m_rpc_payment_next_seed_hash;
   uint32_t m_rpc_payment_cookie;
   time_t m_height_time;
+  time_t m_target_height_time;
+  std::vector<std::pair<uint8_t, uint64_t>> m_daemon_hard_forks;
 };
 
 }