Add a --restricted-rpc flag to simplewallet

It restricts RPC to a subset of "view only" commands. Kind of like
a poor man's view key replacement.

1 files changed, 28 insertions, 0 deletions

diff --git a/src/wallet/wallet_rpc_server.cpp b/src/wallet/wallet_rpc_server.cpp
index d7b3f8434..be20f05de 100644
--- a/src/wallet/wallet_rpc_server.cpp
+++ b/src/wallet/wallet_rpc_server.cpp
@@ -167,6 +167,13 @@ namespace tools
     std::vector<cryptonote::tx_destination_entry> dsts;
     std::vector<uint8_t> extra;
 
+    if (m_wallet.restricted())
+    {
+      er.code = WALLET_RPC_ERROR_CODE_DENIED;
+      er.message = "Command unavailable in restricted mode.";
+      return false;
+    }
+
     // validate the transfer requested and populate dsts & extra
     if (!validate_transfer(req.destinations, req.payment_id, dsts, extra, er))
     {
@@ -218,6 +225,13 @@ namespace tools
     std::vector<cryptonote::tx_destination_entry> dsts;
     std::vector<uint8_t> extra;
 
+    if (m_wallet.restricted())
+    {
+      er.code = WALLET_RPC_ERROR_CODE_DENIED;
+      er.message = "Command unavailable in restricted mode.";
+      return false;
+    }
+
     // validate the transfer requested and populate dsts & extra; RPC_TRANSFER::request and RPC_TRANSFER_SPLIT::request are identical types.
     if (!validate_transfer(req.destinations, req.payment_id, dsts, extra, er))
     {
@@ -261,6 +275,13 @@ namespace tools
   //------------------------------------------------------------------------------------------------------------------------------
   bool wallet_rpc_server::on_store(const wallet_rpc::COMMAND_RPC_STORE::request& req, wallet_rpc::COMMAND_RPC_STORE::response& res, epee::json_rpc::error& er, connection_context& cntx)
   {
+    if (m_wallet.restricted())
+    {
+      er.code = WALLET_RPC_ERROR_CODE_DENIED;
+      er.message = "Command unavailable in restricted mode.";
+      return false;
+    }
+
     try
     {
       m_wallet.store();
@@ -409,6 +430,13 @@ namespace tools
   //------------------------------------------------------------------------------------------------------------------------------
   bool wallet_rpc_server::on_query_key(const wallet_rpc::COMMAND_RPC_QUERY_KEY::request& req, wallet_rpc::COMMAND_RPC_QUERY_KEY::response& res, epee::json_rpc::error& er, connection_context& cntx)
   {
+      if (m_wallet.restricted())
+      {
+        er.code = WALLET_RPC_ERROR_CODE_DENIED;
+        er.message = "Command unavailable in restricted mode.";
+        return false;
+      }
+
       if (req.key_type.compare("mnemonic") == 0)
       {
         if (!m_wallet.get_seed(res.key))