Add getdeprecationinfo rpc call to return current version and deprecation block height.

src/rpcnet.cpp

@@ -13,6 +13,7 @@
 #include "timedata.h"
 #include "util.h"
 #include "version.h"
+#include "deprecation.h"
 
 #include <boost/foreach.hpp>
 
@@ -398,6 +399,33 @@ static UniValue GetNetworksInfo()
     return networks;
 }
 
+UniValue getdeprecationinfo(const UniValue& params, bool fHelp)
+{
+    if (fHelp || params.size() != 0)
+        throw runtime_error(
+            "getdeprecationinfo\n"
+            "Returns an object containing current version and deprecation block height.\n"
+            "\nResult:\n"
+            "{\n"
+            "  \"version\": xxxxx,                      (numeric) the server version\n"
+            "  \"subversion\": \"/MagicBean:x.y.z[-v]/\",     (string) the server subversion string\n"
+            "  \"deprecationheight\": xxxxx,            (numeric) the block height at which this version will deprecate and shut down (unless -disabledeprecation is set)\n"
+            "}\n"
+            "\nExamples:\n"
+            + HelpExampleCli("getdeprecationinfo", "")
+            + HelpExampleRpc("getdeprecationinfo", "")
+        );
+
+
+    UniValue obj(UniValue::VOBJ);
+    obj.push_back(Pair("version",       CLIENT_VERSION));
+    obj.push_back(Pair("subversion",
+        FormatSubVersion(CLIENT_NAME, CLIENT_VERSION, std::vector<string>())));
+    obj.push_back(Pair("deprecationheight", DEPRECATION_HEIGHT));
+
+    return obj;
+}
+
 UniValue getnetworkinfo(const UniValue& params, bool fHelp)
 {
     if (fHelp || params.size() != 0)