249 lines
8.4 KiB
Java
249 lines
8.4 KiB
Java
package com.rarchives.ripme.ripper.rippers;
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import java.io.File;
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import java.io.IOException;
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import java.net.MalformedURLException;
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import java.net.URL;
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import java.util.ArrayList;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import org.jsoup.nodes.Document;
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import org.jsoup.nodes.Element;
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import org.jsoup.select.Elements;
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import com.rarchives.ripme.ripper.AbstractHTMLRipper;
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import com.rarchives.ripme.ripper.DownloadThreadPool;
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import com.rarchives.ripme.ui.RipStatusMessage.STATUS;
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import com.rarchives.ripme.utils.Http;
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import com.rarchives.ripme.utils.Utils;
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public class EHentaiRipper extends AbstractHTMLRipper {
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// All sleep times are in milliseconds
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private static final int PAGE_SLEEP_TIME = 3000;
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private static final int IMAGE_SLEEP_TIME = 1500;
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private static final int IP_BLOCK_SLEEP_TIME = 60 * 1000;
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private String lastURL = null;
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// Thread pool for finding direct image links from "image" pages (html)
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private DownloadThreadPool ehentaiThreadPool = new DownloadThreadPool("ehentai");
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@Override
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public DownloadThreadPool getThreadPool() {
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return ehentaiThreadPool;
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}
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// Current HTML document
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private Document albumDoc = null;
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private static final Map<String,String> cookies = new HashMap<String,String>();
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static {
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cookies.put("nw", "1");
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cookies.put("tip", "1");
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}
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public EHentaiRipper(URL url) throws IOException {
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super(url);
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}
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@Override
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public String getHost() {
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return "e-hentai";
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}
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@Override
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public String getDomain() {
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return "g.e-hentai.org";
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}
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public String getAlbumTitle(URL url) throws MalformedURLException {
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try {
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// Attempt to use album title as GID
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if (albumDoc == null) {
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albumDoc = getPageWithRetries(url);
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}
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Elements elems = albumDoc.select("#gn");
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return getHost() + "_" + elems.first().text();
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} catch (Exception e) {
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// Fall back to default album naming convention
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logger.warn("Failed to get album title from " + url, e);
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}
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return super.getAlbumTitle(url);
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}
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@Override
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public String getGID(URL url) throws MalformedURLException {
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Pattern p;
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Matcher m;
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p = Pattern.compile("^.*g\\.e-hentai\\.org/g/([0-9]+)/([a-fA-F0-9]+)/$");
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m = p.matcher(url.toExternalForm());
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if (m.matches()) {
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return m.group(1) + "-" + m.group(2);
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}
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throw new MalformedURLException(
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"Expected g.e-hentai.org gallery format: "
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+ "http://g.e-hentai.org/g/####/####/"
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+ " Got: " + url);
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}
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/**
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* Attempts to get page, checks for IP ban, waits.
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* @param url
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* @return Page document
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* @throws IOException If page loading errors, or if retries are exhausted
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*/
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private Document getPageWithRetries(URL url) throws IOException {
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Document doc;
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int retries = 3;
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while (true) {
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sendUpdate(STATUS.LOADING_RESOURCE, url.toExternalForm());
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logger.info("Retrieving " + url);
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doc = Http.url(url)
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.referrer(this.url)
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.cookies(cookies)
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.get();
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if (doc.toString().contains("IP address will be automatically banned")) {
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if (retries == 0) {
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throw new IOException("Hit rate limit and maximum number of retries, giving up");
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}
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logger.warn("Hit rate limit while loading " + url + ", sleeping for " + IP_BLOCK_SLEEP_TIME + "ms, " + retries + " retries remaining");
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retries--;
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try {
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Thread.sleep(IP_BLOCK_SLEEP_TIME);
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} catch (InterruptedException e) {
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throw new IOException("Interrupted while waiting for rate limit to subside");
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}
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}
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else {
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return doc;
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}
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}
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}
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@Override
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public Document getFirstPage() throws IOException {
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if (albumDoc == null) {
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albumDoc = getPageWithRetries(this.url);
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}
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this.lastURL = this.url.toExternalForm();
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return albumDoc;
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}
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@Override
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public Document getNextPage(Document doc) throws IOException {
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// Check if we've stopped
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if (isStopped()) {
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throw new IOException("Ripping interrupted");
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}
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// Find next page
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Elements hrefs = doc.select(".ptt a");
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if (hrefs.size() == 0) {
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logger.info("doc: " + doc.html());
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throw new IOException("No navigation links found");
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}
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// Ensure next page is different from the current page
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String nextURL = hrefs.last().attr("href");
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if (nextURL.equals(this.lastURL)) {
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logger.info("lastURL = nextURL : " + nextURL);
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throw new IOException("Reached last page of results");
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}
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// Sleep before loading next page
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sleep(PAGE_SLEEP_TIME);
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// Load next page
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Document nextPage = getPageWithRetries(new URL(nextURL));
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this.lastURL = nextURL;
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return nextPage;
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}
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@Override
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public List<String> getURLsFromPage(Document page) {
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List<String> imageURLs = new ArrayList<String>();
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Elements thumbs = page.select("#gdt > .gdtm a");
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// Iterate over images on page
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for (Element thumb : thumbs) {
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imageURLs.add(thumb.attr("href"));
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}
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return imageURLs;
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}
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@Override
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public void downloadURL(URL url, int index) {
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EHentaiImageThread t = new EHentaiImageThread(url, index, this.workingDir);
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ehentaiThreadPool.addThread(t);
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try {
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Thread.sleep(IMAGE_SLEEP_TIME);
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}
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catch (InterruptedException e) {
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logger.warn("Interrupted while waiting to load next image", e);
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}
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}
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/**
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* Helper class to find and download images found on "image" pages
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*
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* Handles case when site has IP-banned the user.
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*/
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private class EHentaiImageThread extends Thread {
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private URL url;
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private int index;
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private File workingDir;
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public EHentaiImageThread(URL url, int index, File workingDir) {
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super();
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this.url = url;
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this.index = index;
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this.workingDir = workingDir;
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}
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@Override
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public void run() {
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fetchImage();
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}
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private void fetchImage() {
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try {
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Document doc = getPageWithRetries(this.url);
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// Find image
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Elements images = doc.select(".sni > a > img");
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if (images.size() == 0) {
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// Attempt to find image elsewise (Issue #41)
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images = doc.select("img#img");
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if (images.size() == 0) {
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logger.warn("Image not found at " + this.url);
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return;
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}
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}
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Element image = images.first();
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String imgsrc = image.attr("src");
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logger.info("Found URL " + imgsrc + " via " + images.get(0));
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Pattern p = Pattern.compile("^http://.*/ehg/image.php.*&n=([^&]+).*$");
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Matcher m = p.matcher(imgsrc);
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if (m.matches()) {
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// Manually discover filename from URL
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String savePath = this.workingDir + File.separator;
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if (Utils.getConfigBoolean("download.save_order", true)) {
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savePath += String.format("%03d_", index);
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}
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savePath += m.group(1);
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addURLToDownload(new URL(imgsrc), new File(savePath));
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}
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else {
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// Provide prefix and let the AbstractRipper "guess" the filename
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String prefix = "";
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if (Utils.getConfigBoolean("download.save_order", true)) {
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prefix = String.format("%03d_", index);
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}
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addURLToDownload(new URL(imgsrc), prefix);
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}
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} catch (IOException e) {
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logger.error("[!] Exception while loading/parsing " + this.url, e);
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}
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}
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}
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} |