text: /*
   * Copyright 2016 Google Inc.
   *
   * Use of this source code is governed by a BSD-style license that can be
   * found in the LICENSE file.
   */
  
  #include "tools/skiaserve/Response.h"
  
  #include "tools/skiaserve/Request.h"
  
  #include "include/core/SkData.h"
  #include "include/core/SkString.h"
  #include "tools/flags/CommandLineFlags.h"
  
  #include "microhttpd.h"
  
  static DEFINE_string(source, "https://debugger-assets.skia.org", "Where to load the web UI from.");
  
  static SkString generate_template(SkString source) {
      SkString debuggerTemplate;
      debuggerTemplate.appendf(
          "<!DOCTYPE html>\n"
          "<html>\n"
          "<head>\n"
          "    <title>SkDebugger</title>\n"
          "    <meta charset='utf-8' />\n"
          "    <meta http-equiv='X-UA-Compatible' content='IE=edge'>\n"
          "    <meta name='viewport' content='width=device-width, initial-scale=1.0'>\n"
          "    <script src='%s/res/js/core.js' type='text/javascript' charset='utf-8'></script>\n"
          "    <link href='%s/res/vul/elements.html' rel='import' />\n"
          "    <link rel='shortcut icon' href='%s/res/img/favicon.ico' type='image/x-icon'/ >"
          "</head>\n"
          "<body class='fullbleed layout vertical'>\n"
              "  <debugger-app-sk>This is the app."
              "  </debugger-app-sk>\n"
          "</body>\n"
          "</html>", source.c_str(), source.c_str(), source.c_str());
      return debuggerTemplate;
  }
  
  namespace Response {
  // SendOK just sends an empty response with a 200 OK status code.
  int SendOK(MHD_Connection* connection) {
      const char* data = "";
  
      MHD_Response* response = MHD_create_response_from_buffer(strlen(data),
                                                               (void*)data,
                                                               MHD_RESPMEM_PERSISTENT);
      int ret = MHD_queue_response(connection, 200, response);
      MHD_destroy_response(response);
      return ret;
  }
  
  int SendError(MHD_Connection* connection, const char* msg) {
      MHD_Response* response = MHD_create_response_from_buffer(strlen(msg),
                                                               (void*) msg,
                                                               MHD_RESPMEM_PERSISTENT);
      int ret = MHD_queue_response(connection, 500, response);
      MHD_destroy_response(response);
      return ret;
  }
  
  int SendData(MHD_Connection* connection, const SkData* data, const char* type,
               bool setContentDisposition, const char* dispositionString) {
      MHD_Response* response = MHD_create_response_from_buffer(data->size(),
                                                               const_cast<void*>(data->data()),
                                                               MHD_RESPMEM_MUST_COPY);
      MHD_add_response_header(response, "Content-Type", type);
  
      if (setContentDisposition) {
          MHD_add_response_header(response, "Content-Disposition", dispositionString);
      }
  
      int ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
      MHD_destroy_response(response);
      return ret;
  }
  
  int SendTemplate(MHD_Connection* connection, bool redirect, const char* redirectUrl) {
      SkString debuggerTemplate = generate_template(SkString(FLAGS_source[0]));
  
      MHD_Response* response = MHD_create_response_from_buffer(
          debuggerTemplate.size(),
          (void*) const_cast<char*>(debuggerTemplate.c_str()),
          MHD_RESPMEM_MUST_COPY);
      MHD_add_response_header (response, "Access-Control-Allow-Origin", "*");
  
      int status = MHD_HTTP_OK;
  
      if (redirect) {
          MHD_add_response_header (response, "Location", redirectUrl);
          status = MHD_HTTP_SEE_OTHER;
      }
  
      int ret = MHD_queue_response(connection, status, response);
      MHD_destroy_response(response);
      return ret;
  }
  
  } // namespace Response
  