darkfid: Add rpc_xmr

bin/darkfid/src/rpc_xmr.rs

@@ -0,0 +1,54 @@
+/* This file is part of DarkFi (https://dark.fi)
+ *
+ * Copyright (C) 2020-2024 Dyne.org foundation
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+use std::collections::HashMap;
+
+use darkfi::rpc::jsonrpc::{ErrorCode, JsonError, JsonResponse, JsonResult};
+use log::error;
+use tinyjson::JsonValue;
+
+use crate::DarkfiNode;
+
+impl DarkfiNode {
+    // RPCAPI:
+    // Gets a unique ID that identifies this merge mined chain and
+    // separates it from other chains.
+    //
+    // `chain_id`: A unique 32-byte hex-encoded value that identifies
+    //             this merge mined chain.
+    //
+    // --> {"jsonrpc":"2.0", "method": "merge_mining_get_chain_id", "id": 1}
+    // <-- {"jsonrpc":"2.0", "result": {"chain_id": "0f28c...7863"}, "id": 1}
+    pub async fn xmr_merge_mining_get_chain_id(self, id: u16, _params: JsonValue) -> JsonResult {
+        let (_, genesis_hash) = match self.validator.blockchain.genesis() {
+            Ok(v) => v,
+            Err(e) => {
+                error!(
+                    target: "darkfid::rpc::xmr_merge_mining_get_chain_id",
+                    "[RPC] Error fetching genesis block hash: {}", e,
+                );
+                return JsonError::new(ErrorCode::InternalError, None, id).into()
+            }
+        };
+
+        let hex_hash = format!("{:x?}", genesis_hash);
+        let resp_obj = HashMap::from([("chain_id".to_string(), JsonValue::String(hex_hash))]);
+
+        JsonResponse::new(resp_obj.into(), id).into()
+    }
+}