Update to libnitrokey v3.6

This patch updates libnitrokey from version 3.5 to version 3.6, causing
these changes:

- New constants:
  - `NK_device_model_NK_LIBREM` (`NK_device_model` enum)
- New structures:
  - `NK_config`
- New functions:
  - `NK_device_serial_number_as_u32`
  - `NK_write_config_struct`
  - `NK_free_config`
  - `NK_read_config_struct`
  - `NK_free_password_safe_slot_status`
- Deprecated functions:
  - `NK_set_unencrypted_read_only`
  - `NK_set_unencrypted_read_write`

1 files changed, 103 insertions, 0 deletions

diff --git a/libnitrokey-v3.6/log.cc b/libnitrokey-v3.6/log.cc
new file mode 100644
index 0000000..06acee7
--- /dev/null
+++ b/libnitrokey-v3.6/log.cc
@@ -0,0 +1,103 @@
+/*
+ * Copyright (c) 2015-2018 Nitrokey UG
+ *
+ * This file is part of libnitrokey.
+ *
+ * libnitrokey is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * any later version.
+ *
+ * libnitrokey 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with libnitrokey. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * SPDX-License-Identifier: LGPL-3.0
+ */
+
+#include "log.h"
+#include <iostream>
+#include <ctime>
+#include <iomanip>
+
+#include <sstream>
+
+namespace nitrokey {
+  namespace log {
+
+    Log *Log::mp_instance = nullptr;
+    StdlogHandler stdlog_handler;
+
+    std::string Log::prefix = "";
+
+
+    std::string LogHandler::loglevel_to_str(Loglevel lvl) {
+      switch (lvl) {
+        case Loglevel::DEBUG_L1:
+          return std::string("DEBUG_L1");
+        case Loglevel::DEBUG_L2:
+          return std::string("DEBUG_L2");
+        case Loglevel::DEBUG:
+          return std::string("DEBUG");
+        case Loglevel::INFO:
+          return std::string("INFO");
+        case Loglevel::WARNING:
+          return std::string("WARNING");
+        case Loglevel::ERROR:
+          return std::string("ERROR");
+      }
+      return std::string("");
+    }
+
+    void Log::operator()(const std::string &logstr, Loglevel lvl) {
+      if (mp_loghandler != nullptr){
+        if ((int) lvl <= (int) m_loglevel) mp_loghandler->print(prefix+logstr, lvl);
+      }
+    }
+
+    void Log::setPrefix(const std::string prefix) {
+      if (!prefix.empty()){
+        Log::prefix = "["+prefix+"]";
+      } else {
+        Log::prefix = "";
+      }
+    }
+
+    void StdlogHandler::print(const std::string &str, Loglevel lvl) {
+      std::string s = format_message_to_string(str, lvl);
+      std::clog << s;
+    }
+
+    void FunctionalLogHandler::print(const std::string &str, Loglevel lvl) {
+      std::string s = format_message_to_string(str, lvl);
+      log_function(s);
+    }
+
+    std::string LogHandler::format_message_to_string(const std::string &str, const Loglevel &lvl) {
+      static bool last_short = false;
+      if (str.length() == 1){
+        last_short = true;
+        return str;
+      }
+      time_t t = time(nullptr);
+      tm tm = *localtime(&t);
+
+      std::stringstream s;
+      s
+          << (last_short? "\n" : "")
+          << "[" << std::put_time(&tm, "%c") << "]"
+          << "[" << loglevel_to_str(lvl) << "]\t"
+          << str << std::endl;
+      last_short = false;
+      return s.str();
+    }
+
+    FunctionalLogHandler::FunctionalLogHandler(log_function_type _log_function) {
+      log_function = _log_function;
+    }
+  }
+}