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Set proper User-Agent when downloading images

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This way CDNs don't block the request
This commit is contained in:
DerEnderKeks 2021-05-18 11:41:44 +02:00
parent 108812785e
commit afea802cd2
1 changed files with 26 additions and 28 deletions
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54
src/main/java/net/craftcitizen/imagemaps/ImageMapDownloadCommand.java
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@ -1,5 +1,12 @@
package net.craftcitizen.imagemaps;
import de.craftlancer.core.LambdaRunnable;
import de.craftlancer.core.util.MessageLevel;
import de.craftlancer.core.util.MessageUtil;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
@ -9,66 +16,59 @@ import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import javax.imageio.ImageIO;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import de.craftlancer.core.LambdaRunnable;
import de.craftlancer.core.util.MessageLevel;
import de.craftlancer.core.util.MessageUtil;
public class ImageMapDownloadCommand extends ImageMapSubCommand {
public ImageMapDownloadCommand(ImageMaps plugin) {
super("imagemaps.download", plugin, true);
}
@Override
protected String execute(CommandSender sender, Command cmd, String label, String[] args) {
if (!checkSender(sender)) {
MessageUtil.sendMessage(getPlugin(), sender, MessageLevel.WARNING, "You can't run this command.");
return null;
}
if (args.length < 3) {
MessageUtil.sendMessage(getPlugin(), sender, MessageLevel.WARNING, "You must specify a file name and a download link.");
return null;
}
String filename = args[1];
String url = args[2];
if (filename.contains("/") || filename.contains("\\") || filename.contains(":")) {
MessageUtil.sendMessage(getPlugin(), sender, MessageLevel.WARNING, "Filename contains illegal character.");
return null;
}
new LambdaRunnable(() -> download(sender, url, filename)).runTaskAsynchronously(plugin);
return null;
}
private void download(CommandSender sender, String input, String filename) {
try {
URL srcURL = new URL(input);
if (!srcURL.getProtocol().startsWith("http")) {
MessageUtil.sendMessage(getPlugin(), sender, MessageLevel.WARNING, "Download URL is not valid.");
return;
}
URLConnection connection = srcURL.openConnection();
if (!(connection instanceof HttpURLConnection)) {
MessageUtil.sendMessage(getPlugin(), sender, MessageLevel.WARNING, "Download URL is not valid.");
return;
}
connection.setRequestProperty("User-Agent", "ImageMap/0");
if (((HttpURLConnection) connection).getResponseCode() != 200) {
MessageUtil.sendMessage(getPlugin(),
sender,
MessageLevel.WARNING,
String.format("Download failed, HTTP Error code %d.", ((HttpURLConnection) connection).getResponseCode()));
sender,
MessageLevel.WARNING,
String.format("Download failed, HTTP Error code %d.", ((HttpURLConnection) connection).getResponseCode()));
return;
}
@ -88,16 +88,14 @@ public class ImageMapDownloadCommand extends ImageMapSubCommand {
ImageIO.write(iamge, "PNG", new File(plugin.getDataFolder(), "images" + File.separatorChar + filename));
}
MessageUtil.sendMessage(getPlugin(), sender, MessageLevel.NORMAL, "Download complete.");
}
catch (MalformedURLException ex) {
} catch (MalformedURLException ex) {
MessageUtil.sendMessage(getPlugin(), sender, MessageLevel.WARNING, "Malformatted URL");
}
catch (IOException ex) {
} catch (IOException ex) {
MessageUtil.sendMessage(getPlugin(), sender, MessageLevel.ERROR, "An IO Exception happened, see server log");
ex.printStackTrace();
}
}
@Override
public void help(CommandSender sender) {
MessageUtil.sendMessage(getPlugin(), sender, MessageLevel.NORMAL, "Downloads an image from an URL.");