1 files changed, 46 insertions, 1 deletions
diff --git a/src/net_types.h b/src/net_types.h
index d55a8cde6c..ffdc24c772 100644
--- a/src/net_types.h
+++ b/src/net_types.h
@@ -5,11 +5,56 @@
 #ifndef BITCOIN_NET_TYPES_H
 #define BITCOIN_NET_TYPES_H
 
+#include <cstdint>
 #include <map>
 
-class CBanEntry;
 class CSubNet;
+class UniValue;
+
+class CBanEntry
+{
+public:
+    static constexpr int CURRENT_VERSION{1};
+    int nVersion{CBanEntry::CURRENT_VERSION};
+    int64_t nCreateTime{0};
+    int64_t nBanUntil{0};
+
+    CBanEntry() {}
+
+    explicit CBanEntry(int64_t nCreateTimeIn)
+        : nCreateTime{nCreateTimeIn} {}
+
+    /**
+     * Create a ban entry from JSON.
+     * @param[in] json A JSON representation of a ban entry, as created by `ToJson()`.
+     * @throw std::runtime_error if the JSON does not have the expected fields.
+     */
+    explicit CBanEntry(const UniValue& json);
+
+    /**
+     * Generate a JSON representation of this ban entry.
+     * @return JSON suitable for passing to the `CBanEntry(const UniValue&)` constructor.
+     */
+    UniValue ToJson() const;
+};
 
 using banmap_t = std::map<CSubNet, CBanEntry>;
 
+/**
+ * Convert a `banmap_t` object to a JSON array.
+ * @param[in] bans Bans list to convert.
+ * @return a JSON array, similar to the one returned by the `listbanned` RPC. Suitable for
+ * passing to `BanMapFromJson()`.
+ */
+UniValue BanMapToJson(const banmap_t& bans);
+
+/**
+ * Convert a JSON array to a `banmap_t` object.
+ * @param[in] bans_json JSON to convert, must be as returned by `BanMapToJson()`.
+ * @param[out] bans Bans list to create from the JSON.
+ * @throws std::runtime_error if the JSON does not have the expected fields or they contain
+ * unparsable values.
+ */
+void BanMapFromJson(const UniValue& bans_json, banmap_t& bans);
+
 #endif // BITCOIN_NET_TYPES_H