content: /*
   ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
   ~                                                                               ~
   ~ The MIT License (MIT)                                                         ~
   ~                                                                               ~
   ~ Copyright (c) 2015-2025 miaixz.org gitlab4j and other contributors.           ~
   ~                                                                               ~
   ~ Permission is hereby granted, free of charge, to any person obtaining a copy  ~
   ~ of this software and associated documentation files (the "Software"), to deal ~
   ~ in the Software without restriction, including without limitation the rights  ~
   ~ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell     ~
   ~ copies of the Software, and to permit persons to whom the Software is         ~
   ~ furnished to do so, subject to the following conditions:                      ~
   ~                                                                               ~
   ~ The above copyright notice and this permission notice shall be included in    ~
   ~ all copies or substantial portions of the Software.                           ~
   ~                                                                               ~
   ~ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR    ~
   ~ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,      ~
   ~ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE   ~
   ~ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER        ~
   ~ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, ~
   ~ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN     ~
   ~ THE SOFTWARE.                                                                 ~
   ~                                                                               ~
   ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
  */
  package org.miaixz.bus.gitlab.support;
  
  import java.io.*;
  import java.nio.charset.StandardCharsets;
  
  import jakarta.ws.rs.WebApplicationException;
  import jakarta.ws.rs.core.StreamingOutput;
  
  /**
   * This StreamingOutput implementation is utilized to send a OAuth2 token request in a secure manner. The password is
   * never copied to a String, instead it is contained in a SecretString that is cleared when an instance of this class is
   * finalized.
   */
  public class Oauth2LoginStreamingOutput implements StreamingOutput, AutoCloseable {
  
      private final String username;
      private final SecretString password;
  
      public Oauth2LoginStreamingOutput(String username, CharSequence password) {
          this.username = username;
          this.password = new SecretString(password);
      }
  
      public Oauth2LoginStreamingOutput(String username, char[] password) {
          this.username = username;
          this.password = new SecretString(password);
      }
  
      @Override
      public void write(OutputStream output) throws IOException, WebApplicationException {
  
          Writer writer = new BufferedWriter(new OutputStreamWriter(output, StandardCharsets.UTF_8));
          writer.write("{ ");
          writer.write("\"grant_type\": \"password\", ");
          writer.write("\"username\": \"" + username + "\", ");
          writer.write("\"password\": ");
  
          // Output the quoted password
          writer.write('"');
          for (int i = 0, length = password.length(); i < length; i++) {
  
              char c = password.charAt(i);
              if (c == '"' || c == '\\') {
                  writer.write('\\');
              }
  
              writer.write(c);
          }
  
          writer.write('"');
  
          writer.write(" }");
          writer.flush();
          writer.close();
      }
  
      /**
       * Clears the contained password's data.
       */
      public void clearPassword() {
          password.clear();
      }
  
      @Override
      public void close() {
          clearPassword();
      }
  
      @Override
      public void finalize() throws Throwable {
          clearPassword();
          super.finalize();
      }
  
  }
  