Fix compile and const some stuff

src/hush_utils.h

@@ -1473,7 +1473,7 @@ uint32_t hush_smartmagic(char *symbol,uint64_t supply,uint8_t *extraptr,int32_t
     }
 
     //TODO: why is this needed?
-    bool ishush3 = strncmp(symbol, "HUSH3",5) == 0 ? true : false;
+    const bool ishush3 = strncmp(symbol, "HUSH3",5) == 0 ? true : false;
     if(ishush3) {
         return HUSH_MAGIC;
     } else {
@@ -1619,7 +1619,7 @@ uint64_t hush_sc_block_subsidy(int nHeight)
     int64_t subsidyDifference;
     int32_t numhalvings = 0, curEra = 0, sign = 1;
     static uint64_t cached_subsidy; static int32_t cached_numhalvings; static int cached_era;
-    bool ishush3 = strncmp(SMART_CHAIN_SYMBOL, "HUSH3",5) == 0 ? true : false;
+    const bool ishush3 = strncmp(SMART_CHAIN_SYMBOL, "HUSH3",5) == 0 ? true : false;
     // fprintf(stderr,"%s: ht=%d ishush3=%d\n", __func__, nHeight, ishush3);
 
     // check for backwards compat, older chains with no explicit rewards had 0.0001 block reward
@@ -1795,15 +1795,26 @@ void hush_args(char *argv0)
 	name = GetArg("-ac_name","HUSH3");
     fprintf(stderr,".oO Starting %s Full Node (Extreme Privacy!) with genproc=%d notary=%d\n",name.c_str(),HUSH_MININGTHREADS, IS_HUSH_NOTARY);
 
-    vector<string> HUSH_nodes= {"node1.hush.is","node2.hush.is","node3.hush.is",
-                                "node4.hush.is","node5.hush.is","node6.hush.is",
-                                "node7.hush.is","node8.hush.is","node1.hush.land", "node2.hush.land", "node3.hush.land", "node4.hush.land", "node5.hush.land"};
+    vector<string> HUSH_nodes = {};
+    // Only HUSH3 and DRAGONX connect to these by default, other HACs must opt-in via -connect/-addnode
+    const bool ishush3   = strncmp(SMART_CHAIN_SYMBOL, "HUSH3",5) == 0 ? true : false;
+    const bool isdragonx = strncmp(SMART_CHAIN_SYMBOL, "DRAGONX",7) == 0 ? true : false;
+    if (ishush3 || isdragonx) {
+        HUSH_nodes = {"node1.hush.is","node2.hush.is","node3.hush.is",
+                      "node4.hush.is","node5.hush.is","node6.hush.is",
+                      "node7.hush.is","node8.hush.is","node1.hush.land",
+                      "node2.hush.land", "node3.hush.land",
+                      "node4.hush.land", "node5.hush.land"};
+    }
+
     vector<string> more_nodes = mapMultiArgs["-addnode"];
     if (more_nodes.size() > 0) {
         fprintf(stderr,"%s: Adding %lu more nodes via custom -addnode arguments\n", __func__, more_nodes.size() );
     }
-    // Add default HUSH nodes after custom addnodes
-    more_nodes.insert( more_nodes.end(), HUSH_nodes.begin(), HUSH_nodes.end() );
+    // Add default HUSH nodes after custom addnodes, if applicable
+    if(HUSH_nodes.size() > 0) {
+        more_nodes.insert( more_nodes.end(), HUSH_nodes.begin(), HUSH_nodes.end() );
+    }
 
     mapMultiArgs["-addnode"] = more_nodes;
     HUSH_STOPAT              = GetArg("-stopat",0);
@@ -1878,7 +1889,7 @@ void hush_args(char *argv0)
 
         // Set our symbol from -ac_name value
         strncpy(SMART_CHAIN_SYMBOL,name.c_str(),sizeof(SMART_CHAIN_SYMBOL)-1);
-        bool ishush3 = strncmp(SMART_CHAIN_SYMBOL, "HUSH3",5) == 0 ? true : false;
+        const bool ishush3   = strncmp(SMART_CHAIN_SYMBOL, "HUSH3",5) == 0 ? true : false;
 
         ASSETCHAINS_LASTERA = GetArg("-ac_eras", 1);
         if(ishush3) {