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/* license: https://mit-license.org
*
* HTTP
*
* Written in 2022 by Moky
*
* ==============================================================================
* The MIT License (MIT)
*
* Copyright (c) 2022 Albert Moky
*
* 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 chat.dim.http;
import java.io.IOError;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Map;
import java.util.UnknownFormatConversionException;
import chat.dim.format.JSONMap;
import chat.dim.format.UTF8;
import chat.dim.utils.Log;
/**
* Upload Task
* ~~~~~~~~~~~
* running task
*
* properties:
* url - remote URL
* path -
* secret -
* name - form var name ('avatar' or 'file')
* filename - form file name
* data - form file data
* sender -
* delegate - HTTP client
*/
public class UploadTask extends UploadRequest implements Runnable {
public final String filename; // file name
public final byte[] data; // file data
public UploadTask(URL url, String var, String fileName, byte[] fileData, UploadDelegate delegate) {
super(url, null, null, var, null, delegate);
filename = fileName;
data = fileData;
}
private static final String BOUNDARY = "BU1kUJ19yLYPqv5xoT3sbKYbHwjUu1JU7roix";
private static final String CONTENT_TYPE = "multipart/form-data; boundary=" + BOUNDARY;
private static final String BEGIN = "--" + BOUNDARY + "\r\n"
+ "Content-Disposition: form-data; name=%s; filename=%s\r\n"
+ "Content-Type: application/octet-stream\r\n\r\n";
private static final String END = "\r\n--" + BOUNDARY + "--";
private static final byte[] TAIL = UTF8.encode(END);
private static byte[] buildHTTPBody(String name, String filename, byte[] data) {
String begin = String.format(BEGIN, name, filename);
byte[] head = UTF8.encode(begin);
byte[] buffer = new byte[head.length + data.length + TAIL.length];
System.arraycopy(head, 0, buffer, 0, head.length);
System.arraycopy(data, 0, buffer, head.length, data.length);
System.arraycopy(TAIL, 0, buffer, head.length + data.length, TAIL.length);
return buffer;
}
private static String post(URL url, String varName, String fileName, byte[] fileData) throws IOException {
String response = null;
Log.info("upload " + fileName + " (" + fileData.length + " bytes) onto " + url);
byte[] data = buildHTTPBody(varName, fileName, fileData);
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setDoInput(true);
connection.setRequestMethod("POST");
connection.setUseCaches(false);
connection.setInstanceFollowRedirects(true);
connection.setConnectTimeout(32000);
connection.setRequestProperty("Content-Type", CONTENT_TYPE);
connection.setRequestProperty("Content-Length", String.valueOf(data.length));
//connection.connect();
try (OutputStream outputStream = connection.getOutputStream()) {
outputStream.write(data);
outputStream.flush();
}
int code = connection.getResponseCode();
if (code == HttpURLConnection.HTTP_OK) {
try (InputStream inputStream = connection.getInputStream()) {
StringBuilder sb = new StringBuilder();
byte[] buffer = new byte[1024];
int len;
while ((len = inputStream.read(buffer)) != -1) {
sb.append(new String(buffer, 0, len));
}
response = sb.toString();
}
}
//connection.disconnect();
return response;
}
/* response: {
"code": {{code}},
"message": "{{message}}",
"filename": "{{filename}}",
"url": "{{url}}"
}
*/
private static URL getURL(String json) throws NoSuchFieldException, MalformedURLException {
if (json == null) {
// no response?
throw new NullPointerException("no response");
}
Map info = JSONMap.decode(json);
if (info == null) {
throw new UnknownFormatConversionException("json error: " + json);
}
String url = (String) info.get("url");
if (url == null) {
// response error
throw new NoSuchFieldException("url not found: " + json);
}
return new URL(url);
}
@Override
public void run() {
UploadDelegate delegate = getDelegate();
touch();
// 1. send to server
String response;
try {
response = post(url, name, filename, data);
} catch (IOException | AssertionError e) {
IOException ie = e instanceof IOException ? (IOException) e : new IOException(e);
e.printStackTrace();
Log.error("failed to upload: " + filename + " -> " + url + ", error: " + e);
onError();
if (delegate != null) {
delegate.onUploadFailed(this, ie);
}
onFinished();
return;
}
// 2. get URL from server response
URL url;
try {
url = getURL(response);
} catch (NoSuchFieldException | MalformedURLException | RuntimeException e) {
e.printStackTrace();
onError();
if (delegate != null) {
delegate.onUploadError(this, new IOError(e));
}
onFinished();
return;
}
// 3. upload success
onSuccess();
if (delegate != null) {
delegate.onUploadSuccess(this, url);
}
onFinished();
}
}