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-rw-r--r--src/main/java/com/juick/util/HttpUtils.java115
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diff --git a/src/main/java/com/juick/util/HttpUtils.java b/src/main/java/com/juick/util/HttpUtils.java
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+/*
+ * Copyright (C) 2008-2020, Juick
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package com.juick.util;
+
+import org.apache.commons.codec.digest.DigestUtils;
+import org.apache.commons.lang3.StringUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.springframework.http.MediaType;
+import org.springframework.web.multipart.MultipartFile;
+
+import javax.imageio.ImageIO;
+import javax.imageio.ImageReader;
+import javax.imageio.stream.ImageInputStream;
+import java.io.BufferedInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.net.URI;
+import java.net.URL;
+import java.net.URLConnection;
+import java.nio.file.Files;
+import java.nio.file.Paths;
+import java.util.Iterator;
+import java.util.UUID;
+
+/**
+ *
+ * @author Ugnich Anton
+ */
+public class HttpUtils {
+ private static final Logger logger = LoggerFactory.getLogger(HttpUtils.class);
+
+ public static URI receiveMultiPartFile(MultipartFile attach, String tmpDir) throws IOException {
+ if (attach != null && !attach.isEmpty()) {
+ ImageInputStream iis = ImageIO.createImageInputStream(attach.getInputStream());
+ Iterator<ImageReader> readers = ImageIO.getImageReaders(iis);
+
+ String format = StringUtils.EMPTY;
+ while (readers.hasNext()) {
+ ImageReader read = readers.next();
+ format = read.getFormatName();
+ }
+ String attachmentType = attachmentTypeFromFormat(format);
+ if (attachmentType.equals("jpg") || attachmentType.equals("png")) {
+ String attachmentFName = DigestUtils.md5Hex(UUID.randomUUID().toString()) + "." + attachmentType;
+ try {
+ Files.write(Paths.get(tmpDir, attachmentFName),
+ attach.getBytes());
+ return URI.create(String.format("juick://%s", attachmentFName));
+ } catch (IOException e) {
+ logger.warn("file receive error", e);
+ }
+ }
+ logger.warn("file type is unknown: {}", attach.getOriginalFilename());
+ }
+ return URI.create(StringUtils.EMPTY);
+ }
+
+ private static String attachmentTypeFromFormat(String format) throws IOException {
+ if (format != null && format.equals("JPEG")) {
+ return "jpg";
+ } else if (format != null && format.equals("png")) {
+ return "png";
+ } else {
+ throw new IOException("Wrong file type: " + format);
+ }
+ }
+
+ public static String mediaType(String attachmentType) {
+ return attachmentType.equals("jpg") ? MediaType.IMAGE_JPEG_VALUE : MediaType.IMAGE_PNG_VALUE;
+ }
+
+ public static URI downloadImage(URL url, String tmpDir) throws IOException {
+ ImageInputStream iis = ImageIO.createImageInputStream(url.openStream());
+ Iterator<ImageReader> readers = ImageIO.getImageReaders(iis);
+
+ String format = StringUtils.EMPTY;
+ while (readers.hasNext()) {
+ ImageReader read = readers.next();
+ format = read.getFormatName();
+ }
+ URLConnection urlConn;
+ try {
+ urlConn = url.openConnection();
+ } catch (IOException e) {
+ logger.error(String.format("Failed open url: %s", url.toString()));
+ throw e;
+ }
+
+ try (InputStream is = new BufferedInputStream(urlConn.getInputStream())) {
+ String attachmentType = attachmentTypeFromFormat(format);
+
+ String attachmentFName = DigestUtils.md5Hex(UUID.randomUUID().toString()) + "." + attachmentType;
+ Files.copy(is, Paths.get(tmpDir, attachmentFName));
+ return URI.create(String.format("juick://%s", attachmentFName));
+ } catch (IOException e) {
+ logger.error(String.format("Failed download image by url: %s", url.toString()), e);
+ throw e;
+ }
+ }
+}