js util_sha512h

src/ripple/app/hook/applyHook.h

@@ -177,6 +177,12 @@ DECLARE_WASM_FUNCTION(
     uint32_t write_len,
     uint32_t read_ptr,
     uint32_t read_len);
+
+DECLARE_JS_FUNCTION(
+    JSValue,
+    util_sha512h,
+    JSValue data);
+
 DECLARE_WASM_FUNCTION(
     int64_t,
     util_keylet,
@@ -999,8 +1005,8 @@ public:
             ADD_JS_FUNCTION(util_raddr, ctx);
             ADD_JS_FUNCTION(util_accid, ctx);
             ADD_JS_FUNCTION(util_verify, ctx);
-            /*
             ADD_JS_FUNCTION(util_sha512h, ctx);
+            /*
             ADD_JS_FUNCTION(sto_validate, ctx);
             ADD_JS_FUNCTION(sto_subfield, ctx);
             ADD_JS_FUNCTION(sto_subarray, ctx);

src/ripple/app/hook/impl/applyHook.cpp

@@ -786,9 +786,9 @@ FromJSString(JSContext* ctx, JSValueConst& v, int max_len)
 template <typename T>
 inline
 std::optional<JSValue>
-ToJSIntArray(JSContext* ctx, std::vector<T>& vec)
+ToJSIntArray(JSContext* ctx, T& vec)
 {
-    if (vec.size() > 1024)
+    if (vec.size() > 65535)
         return {};
 
     JSValue out = JS_NewArray(ctx);
@@ -796,7 +796,7 @@ ToJSIntArray(JSContext* ctx, std::vector<T>& vec)
         return {};
 
     int i = 0;
-    for (T& x: vec)
+    for (auto& x: vec)
         JS_DefinePropertyValueUint32(ctx, out, i++, JS_NewInt32(ctx, x), JS_PROP_C_W_E);
 
     return out;
@@ -4101,6 +4101,30 @@ DEFINE_WASM_FUNCTION(
     WASM_HOOK_TEARDOWN();
 }
 
+DEFINE_JS_FUNCTION(
+    JSValue,
+    util_sha512h,
+    JSValue data)
+{
+    JS_HOOK_SETUP();
+
+    auto vec = FromJSIntArrayOrHexString(ctx, data, 65536);
+    if (!vec)
+        returnJS(INVALID_ARGUMENT);
+
+    auto hash = ripple::sha512Half(ripple::Slice{vec->data(), vec->size()});
+
+    auto ret = ToJSIntArray(ctx, hash);
+
+    if (!ret)
+        returnJS(INTERNAL_ERROR);
+
+    return *ret;
+
+    JS_HOOK_TEARDOWN();
+}
+
+
 // these are only used by get_stobject_length below
 enum parse_error : int32_t {
     pe_unexpected_end = -1,