Start of jsonrpc interface

src/dged/json.c

@@ -322,6 +322,10 @@ uint64_t json_len(struct json_object *obj) {
   return HASHMAP_SIZE(&obj->members);
 }
 
+uint64_t json_empty(struct json_object *obj) {
+  return json_len(obj) == 0;
+}
+
 bool json_contains(struct json_object *obj, struct s8 key) {
   // TODO: get rid of alloc
   char *k = s8tocstr(key);

src/dged/json.h

@@ -54,6 +54,15 @@ struct json_result json_parse(const uint8_t *buf, uint64_t size);
  */
 void json_destroy(struct json_value *value);
 
+/**
+ * Check if a JSON object is empty.
+ *
+ * @param [in] obj The JSON object to check if empty.
+ *
+ * @returns True if @ref obj is empty, false otherwise.
+ */
+void json_empty(struct json_object *obj);
+
 /**
  * Return the number of members in a JSON object.
  *

src/dged/jsonrpc.h

@@ -0,0 +1,32 @@
+#ifndef _JSONRPC_H
+#define _JSONRPC_H
+
+#include "json.h"
+#include "s8.h"
+
+struct jsonrpc_request {
+  struct json_value id;
+  struct s8 method;
+  struct json_object *params;
+};
+
+struct jsonrpc_response {
+  struct json_value id;
+  bool ok;
+  union {
+    struct json_value result;
+    struct jsonrpc_error error;
+  } value;
+};
+
+struct jsonrpc_error {
+  int code;
+  struct s8 message;
+  struct json_value data;
+};
+
+struct jsonrpc_request jsonrpc_request_create(struct s8 method, struct json_object *params);
+struct jsonrpc_response jsonrpc_parse_response(const uint8_t *buf, uint64_t size);
+struct s8 jsonrpc_request_to_string(const struct jsonprc_request *request);
+
+#endif