From 83bbea4c7f47d05933ec1b5baca2e9724561e49c Mon Sep 17 00:00:00 2001
From: moneromooo-monero <moneromooo-monero@users.noreply.github.com>
Date: Tue, 11 Aug 2015 10:49:15 +0100
Subject: Add a is_key_image_spent daemon command and RPC call

---
 src/daemon/command_parser_executor.cpp | 20 +++++++++++++++++++
 src/daemon/command_parser_executor.h   |  2 ++
 src/daemon/command_server.cpp          |  5 +++++
 src/daemon/rpc_command_executor.cpp    | 36 ++++++++++++++++++++++++++++++++++
 src/daemon/rpc_command_executor.h      |  2 ++
 5 files changed, 65 insertions(+)

(limited to 'src/daemon')

diff --git a/src/daemon/command_parser_executor.cpp b/src/daemon/command_parser_executor.cpp
index 58cb475ab..e6666c443 100644
--- a/src/daemon/command_parser_executor.cpp
+++ b/src/daemon/command_parser_executor.cpp
@@ -180,6 +180,26 @@ bool t_command_parser_executor::print_transaction(const std::vector<std::string>
   return true;
 }
 
+bool t_command_parser_executor::is_key_image_spent(const std::vector<std::string>& args)
+{
+  if (args.empty())
+  {
+    std::cout << "expected: is_key_image_spent <key_image>" << std::endl;
+    return true;
+  }
+
+  const std::string& str = args.front();
+  crypto::key_image ki;
+  crypto::hash hash;
+  if (parse_hash256(str, hash))
+  {
+    memcpy(&ki, &hash, sizeof(ki));
+    m_executor.is_key_image_spent(ki);
+  }
+
+  return true;
+}
+
 bool t_command_parser_executor::print_transaction_pool_long(const std::vector<std::string>& args)
 {
   if (!args.empty()) return false;
diff --git a/src/daemon/command_parser_executor.h b/src/daemon/command_parser_executor.h
index d1e299877..ddc207cfe 100644
--- a/src/daemon/command_parser_executor.h
+++ b/src/daemon/command_parser_executor.h
@@ -75,6 +75,8 @@ public:
 
   bool print_transaction(const std::vector<std::string>& args);
 
+  bool is_key_image_spent(const std::vector<std::string>& args);
+
   bool print_transaction_pool_long(const std::vector<std::string>& args);
 
   bool print_transaction_pool_short(const std::vector<std::string>& args);
diff --git a/src/daemon/command_server.cpp b/src/daemon/command_server.cpp
index 65bceff75..047b52c3e 100644
--- a/src/daemon/command_server.cpp
+++ b/src/daemon/command_server.cpp
@@ -84,6 +84,11 @@ t_command_server::t_command_server(
     , std::bind(&t_command_parser_executor::print_transaction, &m_parser, p::_1)
     , "Print transaction, print_tx <transaction_hash>"
     );
+  m_command_lookup.set_handler(
+      "is_key_image_spent"
+    , std::bind(&t_command_parser_executor::is_key_image_spent, &m_parser, p::_1)
+    , "Prints whether a given key image is in the spent key images set, is_key_image_spent <key_image>"
+    );
   m_command_lookup.set_handler(
       "start_mining"
     , std::bind(&t_command_parser_executor::start_mining, &m_parser, p::_1)
diff --git a/src/daemon/rpc_command_executor.cpp b/src/daemon/rpc_command_executor.cpp
index 2f3a6b4d5..62f254c76 100644
--- a/src/daemon/rpc_command_executor.cpp
+++ b/src/daemon/rpc_command_executor.cpp
@@ -520,6 +520,42 @@ bool t_rpc_command_executor::print_transaction(crypto::hash transaction_hash) {
   return true;
 }
 
+bool t_rpc_command_executor::is_key_image_spent(const crypto::key_image &ki) {
+  cryptonote::COMMAND_RPC_IS_KEY_IMAGE_SPENT::request req;
+  cryptonote::COMMAND_RPC_IS_KEY_IMAGE_SPENT::response res;
+
+  std::string fail_message = "Problem checkking key image";
+
+  req.key_images.push_back(epee::string_tools::pod_to_hex(ki));
+  if (m_is_rpc)
+  {
+    if (!m_rpc_client->rpc_request(req, res, "/is_key_image_spent", fail_message.c_str()))
+    {
+      return true;
+    }
+  }
+  else
+  {
+    if (!m_rpc_server->on_is_key_image_spent(req, res))
+    {
+      tools::fail_msg_writer() << fail_message.c_str();
+      return true;
+    }
+  }
+
+  if (1 == res.spent_status.size())
+  {
+    // first as hex
+    tools::success_msg_writer() << ki << ": " << (res.spent_status.front() ? "spent" : "unspent");
+  }
+  else
+  {
+    tools::fail_msg_writer() << "key image status could not be determined" << std::endl;
+  }
+
+  return true;
+}
+
 bool t_rpc_command_executor::print_transaction_pool_long() {
   cryptonote::COMMAND_RPC_GET_TRANSACTION_POOL::request req;
   cryptonote::COMMAND_RPC_GET_TRANSACTION_POOL::response res;
diff --git a/src/daemon/rpc_command_executor.h b/src/daemon/rpc_command_executor.h
index 5e332f3fc..b40a67bf8 100644
--- a/src/daemon/rpc_command_executor.h
+++ b/src/daemon/rpc_command_executor.h
@@ -87,6 +87,8 @@ public:
 
   bool print_transaction(crypto::hash transaction_hash);
 
+  bool is_key_image_spent(const crypto::key_image &ki);
+
   bool print_transaction_pool_long();
 
   bool print_transaction_pool_short();
-- 
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