content: /*
   *  Licensed to the Apache Software Foundation (ASF) under one or more
   *  contributor license agreements.  See the NOTICE file distributed with
   *  this work for additional information regarding copyright ownership.
   *  The ASF licenses this file to You under the Apache License, Version 2.0
   *  (the "License"); you may not use this file except in compliance with
   *  the License.  You may obtain a copy of the License at
   *
   *      https://www.apache.org/licenses/LICENSE-2.0
   *
   *  Unless required by applicable law or agreed to in writing, software
   *  distributed under the License is distributed on an "AS IS" BASIS,
   *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   *  See the License for the specific language governing permissions and
   *  limitations under the License.
   *
   */
  package org.apache.tools.ant.taskdefs.email;
  
  import java.io.BufferedInputStream;
  import java.io.File;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.PrintStream;
  import java.nio.file.Files;
  import org.apache.tools.ant.BuildException;
  import org.apache.tools.ant.Project;
  import org.apache.tools.mail.MailMessage;
  
  /**
   * Class responsible for sending email through raw protocol methods.
   *
   * @since Ant 1.5
   */
  class PlainMailer extends Mailer {
      /**
       * Sends the email using the apache MailMessage class.
       *
       * @see org.apache.tools.mail.MailMessage
       */
      @Override
      public void send() {
          try {
              MailMessage mailMessage = new MailMessage(host, port);
  
              mailMessage.from(from.toString());
  
              boolean atLeastOneRcptReached = false;
  
              replyToList.stream().map(Object::toString).forEach(mailMessage::replyto);
  
              for (EmailAddress to : toList) {
                  try {
                      mailMessage.to(to.toString());
                      atLeastOneRcptReached = true;
                  } catch (IOException ex) {
                      badRecipient(to, ex);
                  }
              }
  
              for (EmailAddress cc : ccList) {
                  try {
                      mailMessage.cc(cc.toString());
                      atLeastOneRcptReached = true;
                  } catch (IOException ex) {
                      badRecipient(cc, ex);
                  }
              }
  
              for (EmailAddress bcc : bccList) {
                  try {
                      mailMessage.bcc(bcc.toString());
                      atLeastOneRcptReached = true;
                  } catch (IOException ex) {
                      badRecipient(bcc, ex);
                  }
              }
  
              if (!atLeastOneRcptReached) {
                  throw new BuildException("Couldn't reach any recipient");
              }
              if (subject != null) {
                  mailMessage.setSubject(subject);
              }
              mailMessage.setHeader("Date", getDate());
              if (message.getCharset() != null) {
                  mailMessage.setHeader("Content-Type", message.getMimeType()
                      + "; charset=\"" + message.getCharset() + "\"");
              } else {
                  mailMessage.setHeader("Content-Type", message.getMimeType());
              }
              if (headers != null) {
                  for (Header h : headers) {
                      mailMessage.setHeader(h.getName(), h.getValue());
                  }
              }
              PrintStream out = mailMessage.getPrintStream();
              message.print(out);
  
              if (files != null) {
                  for (File f : files) {
                      attach(f, out);
                  }
              }
              mailMessage.sendAndClose();
          } catch (IOException ioe) {
              throw new BuildException("IO error sending mail", ioe);
          }
  
      }
  
      /**
       * Attaches a file to this email
       *
       * @param file The file to attache
       * @param out The message stream to add to
       * @throws IOException if errors occur
       */
      protected void attach(File file, PrintStream out)
           throws IOException {
          if (!file.exists() || !file.canRead()) {
              throw new BuildException(
                  "File \"%s\" does not exist or is not readable.",
                  file.getAbsolutePath());
          }
  
          if (includeFileNames) {
              out.println();
  
              String filename = file.getName();
              int filenamelength = filename.length();
  
              out.println(filename);
              for (int star = 0; star < filenamelength; star++) {
                  out.print('=');
              }
              out.println();
          }
  
          final int maxBuf = 1024;
          byte[] buf = new byte[maxBuf];
  
          try (InputStream finstr = Files.newInputStream(file.toPath());
               BufferedInputStream in = new BufferedInputStream(finstr, buf.length)) {
  
              int length;
              while ((length = in.read(buf)) != -1) {
                  out.write(buf, 0, length);
              }
          }
      }
  
      private void badRecipient(EmailAddress rcpt, IOException reason) {
          String msg = "Failed to send mail to " + rcpt;
          if (shouldIgnoreInvalidRecipients()) {
              msg += " because of :" + reason.getMessage();
              if (task != null) {
                  task.log(msg, Project.MSG_WARN);
              } else {
                  System.err.println(msg);
              }
          } else {
              throw new BuildException(msg, reason);
          }
      }
  }
  
  