Port web_service from Citra

src/web_service/verify_login.cpp

@@ -0,0 +1,27 @@
+// Copyright 2017 Citra Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include "web_service/json.h"
+#include "web_service/verify_login.h"
+#include "web_service/web_backend.h"
+
+namespace WebService {
+
+bool VerifyLogin(const std::string& host, const std::string& username, const std::string& token) {
+    Client client(host, username, token);
+    auto reply = client.GetJson("/profile", false).returned_data;
+    if (reply.empty()) {
+        return false;
+    }
+    nlohmann::json json = nlohmann::json::parse(reply);
+    const auto iter = json.find("username");
+
+    if (iter == json.end()) {
+        return username.empty();
+    }
+
+    return username == *iter;
+}
+
+} // namespace WebService