1.0.49 - Ehentai ripper revamped
For #41: * Multi-threading * Longer wait periods * Rate-limit checks & retries * New method for retrieving image from page
This commit is contained in:
4pr0n
parent
0073de17ea
commit
cf7fbb9d3e
2
pom.xml
2
pom.xml
@ -4,7 +4,7 @@
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<groupId>com.rarchives.ripme</groupId>
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<artifactId>ripme</artifactId>
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<packaging>jar</packaging>
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<version>1.0.48</version>
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<version>1.0.49</version>
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<name>ripme</name>
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<url>http://rip.rarchives.com</url>
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<properties>
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@ -14,12 +14,23 @@ import org.jsoup.nodes.Element;
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import org.jsoup.select.Elements;
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import com.rarchives.ripme.ripper.AlbumRipper;
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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.Utils;
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public class EHentaiRipper extends AlbumRipper {
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// All sleep times are in milliseconds
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private static final int PAGE_SLEEP_TIME = 3 * 1000;
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private static final int IMAGE_SLEEP_TIME = 1 * 1000;
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private static final int IP_BLOCK_SLEEP_TIME = 60 * 1000;
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private static final String DOMAIN = "g.e-hentai.org", HOST = "e-hentai";
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private static final Logger logger = Logger.getLogger(EHentaiRipper.class);
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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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// Current HTML document
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private Document albumDoc = null;
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public EHentaiRipper(URL url) throws IOException {
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@ -39,13 +50,18 @@ public class EHentaiRipper extends AlbumRipper {
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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 = Jsoup.connect(url.toExternalForm()).get();
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logger.info(" Retrieving " + url.toExternalForm());
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sendUpdate(STATUS.LOADING_RESOURCE, url.toString());
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albumDoc = Jsoup.connect(url.toExternalForm())
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.userAgent(USER_AGENT)
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.timeout(5000)
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.get();
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}
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Elements elems = albumDoc.select("#gn");
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return HOST + "_" + elems.get(0).text();
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} catch (Exception e) {
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// Fall back to default album naming convention
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e.printStackTrace();
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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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@ -55,8 +71,6 @@ public class EHentaiRipper extends AlbumRipper {
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Pattern p;
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Matcher m;
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System.out.println(url);
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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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@ -71,67 +85,76 @@ public class EHentaiRipper extends AlbumRipper {
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@Override
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public void rip() throws IOException {
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int index = 0;
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int index = 0, retries = 3;
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String nextUrl = this.url.toExternalForm();
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while (true) {
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if (albumDoc == null) {
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logger.info(" Retrieving " + this.url.toExternalForm());
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albumDoc = Jsoup.connect(this.url.toExternalForm()).get();
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}
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Elements select = albumDoc.select("#gdt > .gdtm");
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Element first = select.first();
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String href = first.select("a").attr("href");
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if (href.equals("")) {
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throw new IOException("Could not find 'href' inside elements under #gdt > .gdtm > a");
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}
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URL cursorUrl = new URL(href), prevUrl = null;
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while (!cursorUrl.equals(prevUrl)) {
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prevUrl = cursorUrl;
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Document cursorDoc = Jsoup.connect(cursorUrl.toExternalForm())
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logger.info(" Retrieving album page " + nextUrl);
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sendUpdate(STATUS.LOADING_RESOURCE, nextUrl);
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albumDoc = Jsoup.connect(nextUrl)
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.userAgent(USER_AGENT)
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.timeout(5000)
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.referrer(this.url.toExternalForm())
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.get();
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Elements a = cursorDoc.select(".sni > a");
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Elements images = a.select("img");
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if (images.size() == 0) {
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logger.info("cursorDoc: " + cursorDoc.toString());
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logger.error("No images found at " + cursorUrl);
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}
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// Check for rate limiting
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if (albumDoc.toString().contains("IP address will be automatically banned")) {
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if (retries == 0) {
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logger.error("Hit rate limit and maximum number of retries, giving up");
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break;
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}
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String imgsrc = images.get(0).attr("src");
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if (imgsrc.equals("")) {
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logger.warn("Image URL is empty via " + images.get(0));
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logger.warn("Hit rate limit while loading " + nextUrl + ", 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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logger.error("Interrupted while waiting for rate limit to subside", e);
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break;
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}
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albumDoc = null;
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continue;
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}
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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 + 1);
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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 + 1);
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}
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addURLToDownload(new URL(imgsrc), prefix);
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}
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String nextUrl = a.attr("href");
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if (nextUrl.equals("")) {
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logger.warn("Next page URL is empty, via " + a);
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// Find thumbnails
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Elements thumbs = albumDoc.select("#gdt > .gdtm a");
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if (thumbs.size() == 0) {
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logger.info("albumDoc: " + albumDoc);
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logger.info("No images found at " + nextUrl);
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break;
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}
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cursorUrl = new URL(nextUrl);
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// Iterate over images on page
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for (Element thumb : thumbs) {
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index++;
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EHentaiImageThread t = new EHentaiImageThread(new URL(thumb.attr("href")), 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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} 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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// Find next page
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Elements hrefs = albumDoc.select(".ptt a");
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if (hrefs.size() == 0) {
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logger.info("No navigation links found at " + nextUrl);
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break;
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}
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// Ensure next page is different from the current page
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String lastUrl = nextUrl;
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nextUrl = hrefs.last().attr("href");
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if (lastUrl.equals(nextUrl)) {
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break; // We're on the last page
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}
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// Reset albumDoc so we fetch the page next time
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albumDoc = null;
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// Sleep before loading next page
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try {
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Thread.sleep(PAGE_SLEEP_TIME);
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} catch (InterruptedException e) {
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logger.error("Interrupted while waiting to load next page", e);
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break;
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}
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}
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waitForThreads();
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@ -140,4 +163,90 @@ public class EHentaiRipper extends AlbumRipper {
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public boolean canRip(URL url) {
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return url.getHost().endsWith(DOMAIN);
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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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private int retries = 3;
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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 = Jsoup.connect(this.url.toExternalForm())
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.userAgent(USER_AGENT)
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.timeout(5000)
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.referrer(this.url.toExternalForm())
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.get();
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// Check for rate limit
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if (doc.toString().contains("IP address will be automatically banned")) {
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if (this.retries == 0) {
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logger.error("Rate limited & ran out of retries, skipping image at " + this.url);
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return;
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}
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logger.warn("Hit rate limit. Sleeping for " + IP_BLOCK_SLEEP_TIME + "ms");
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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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logger.error("Interrupted while waiting for rate limit to subside", e);
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return;
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}
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this.retries--;
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fetchImage(); // Re-attempt to download the image
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return;
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}
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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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}
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@ -21,7 +21,7 @@ import com.rarchives.ripme.utils.Utils;
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public class UpdateUtils {
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private static final Logger logger = Logger.getLogger(UpdateUtils.class);
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private static final String DEFAULT_VERSION = "1.0.48";
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private static final String DEFAULT_VERSION = "1.0.49";
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private static final String updateJsonURL = "http://rarchives.com/ripme.json";
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private static final String updateJarURL = "http://rarchives.com/ripme.jar";
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private static final String mainFileName = "ripme.jar";
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