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File size: 8,755 Bytes
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package net.minecraft.util;
import com.google.common.hash.Funnels;
import com.google.common.hash.HashCode;
import com.google.common.hash.HashFunction;
import com.google.common.hash.Hasher;
import com.mojang.logging.LogUtils;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.UncheckedIOException;
import java.net.HttpURLConnection;
import java.net.Proxy;
import java.net.ServerSocket;
import java.net.URL;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import java.nio.file.StandardOpenOption;
import java.nio.file.attribute.FileTime;
import java.time.Instant;
import java.util.Map;
import java.util.OptionalLong;
import javax.annotation.Nullable;
import net.minecraft.FileUtil;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
public class HttpUtil {
private static final Logger LOGGER = LogUtils.getLogger();
private HttpUtil() {
}
public static Path downloadFile(
Path p_312337_,
URL p_309490_,
Map<String, String> p_311545_,
HashFunction p_312368_,
@Nullable HashCode p_309569_,
int p_312993_,
Proxy p_311636_,
HttpUtil.DownloadProgressListener p_310347_
) {
HttpURLConnection httpurlconnection = null;
InputStream inputstream = null;
p_310347_.requestStart();
Path path;
if (p_309569_ != null) {
path = cachedFilePath(p_312337_, p_309569_);
try {
if (checkExistingFile(path, p_312368_, p_309569_)) {
LOGGER.info("Returning cached file since actual hash matches requested");
p_310347_.requestFinished(true);
updateModificationTime(path);
return path;
}
} catch (IOException ioexception1) {
LOGGER.warn("Failed to check cached file {}", path, ioexception1);
}
try {
LOGGER.warn("Existing file {} not found or had mismatched hash", path);
Files.deleteIfExists(path);
} catch (IOException ioexception) {
p_310347_.requestFinished(false);
throw new UncheckedIOException("Failed to remove existing file " + path, ioexception);
}
} else {
path = null;
}
Path $$18;
try {
httpurlconnection = (HttpURLConnection)p_309490_.openConnection(p_311636_);
httpurlconnection.setInstanceFollowRedirects(true);
p_311545_.forEach(httpurlconnection::setRequestProperty);
inputstream = httpurlconnection.getInputStream();
long i = httpurlconnection.getContentLengthLong();
OptionalLong optionallong = i != -1L ? OptionalLong.of(i) : OptionalLong.empty();
FileUtil.createDirectoriesSafe(p_312337_);
p_310347_.downloadStart(optionallong);
if (optionallong.isPresent() && optionallong.getAsLong() > (long)p_312993_) {
throw new IOException("Filesize is bigger than maximum allowed (file is " + optionallong + ", limit is " + p_312993_ + ")");
}
if (path == null) {
Path path3 = Files.createTempFile(p_312337_, "download", ".tmp");
try {
HashCode hashcode1 = downloadAndHash(p_312368_, p_312993_, p_310347_, inputstream, path3);
Path path2 = cachedFilePath(p_312337_, hashcode1);
if (!checkExistingFile(path2, p_312368_, hashcode1)) {
Files.move(path3, path2, StandardCopyOption.REPLACE_EXISTING);
} else {
updateModificationTime(path2);
}
p_310347_.requestFinished(true);
return path2;
} finally {
Files.deleteIfExists(path3);
}
}
HashCode hashcode = downloadAndHash(p_312368_, p_312993_, p_310347_, inputstream, path);
if (!hashcode.equals(p_309569_)) {
throw new IOException("Hash of downloaded file (" + hashcode + ") did not match requested (" + p_309569_ + ")");
}
p_310347_.requestFinished(true);
$$18 = path;
} catch (Throwable throwable) {
if (httpurlconnection != null) {
InputStream inputstream1 = httpurlconnection.getErrorStream();
if (inputstream1 != null) {
try {
LOGGER.error("HTTP response error: {}", IOUtils.toString(inputstream1, StandardCharsets.UTF_8));
} catch (Exception exception) {
LOGGER.error("Failed to read response from server");
}
}
}
p_310347_.requestFinished(false);
throw new IllegalStateException("Failed to download file " + p_309490_, throwable);
} finally {
IOUtils.closeQuietly(inputstream);
}
return $$18;
}
private static void updateModificationTime(Path p_311353_) {
try {
Files.setLastModifiedTime(p_311353_, FileTime.from(Instant.now()));
} catch (IOException ioexception) {
LOGGER.warn("Failed to update modification time of {}", p_311353_, ioexception);
}
}
private static HashCode hashFile(Path p_310985_, HashFunction p_312320_) throws IOException {
Hasher hasher = p_312320_.newHasher();
try (
OutputStream outputstream = Funnels.asOutputStream(hasher);
InputStream inputstream = Files.newInputStream(p_310985_);
) {
inputstream.transferTo(outputstream);
}
return hasher.hash();
}
private static boolean checkExistingFile(Path p_309713_, HashFunction p_311423_, HashCode p_312149_) throws IOException {
if (Files.exists(p_309713_)) {
HashCode hashcode = hashFile(p_309713_, p_311423_);
if (hashcode.equals(p_312149_)) {
return true;
}
LOGGER.warn("Mismatched hash of file {}, expected {} but found {}", p_309713_, p_312149_, hashcode);
}
return false;
}
private static Path cachedFilePath(Path p_310769_, HashCode p_311855_) {
return p_310769_.resolve(p_311855_.toString());
}
private static HashCode downloadAndHash(HashFunction p_312168_, int p_311506_, HttpUtil.DownloadProgressListener p_311732_, InputStream p_312120_, Path p_310124_) throws IOException {
HashCode hashcode;
try (OutputStream outputstream = Files.newOutputStream(p_310124_, StandardOpenOption.CREATE)) {
Hasher hasher = p_312168_.newHasher();
byte[] abyte = new byte[8196];
long j = 0L;
int i;
while ((i = p_312120_.read(abyte)) >= 0) {
j += (long)i;
p_311732_.downloadedBytes(j);
if (j > (long)p_311506_) {
throw new IOException("Filesize was bigger than maximum allowed (got >= " + j + ", limit was " + p_311506_ + ")");
}
if (Thread.interrupted()) {
LOGGER.error("INTERRUPTED");
throw new IOException("Download interrupted");
}
outputstream.write(abyte, 0, i);
hasher.putBytes(abyte, 0, i);
}
hashcode = hasher.hash();
}
return hashcode;
}
public static int getAvailablePort() {
try {
int i;
try (ServerSocket serversocket = new ServerSocket(0)) {
i = serversocket.getLocalPort();
}
return i;
} catch (IOException ioexception) {
return 25564;
}
}
public static boolean isPortAvailable(int p_259872_) {
if (p_259872_ >= 0 && p_259872_ <= 65535) {
try {
boolean flag;
try (ServerSocket serversocket = new ServerSocket(p_259872_)) {
flag = serversocket.getLocalPort() == p_259872_;
}
return flag;
} catch (IOException ioexception) {
return false;
}
} else {
return false;
}
}
public interface DownloadProgressListener {
void requestStart();
void downloadStart(OptionalLong p_311723_);
void downloadedBytes(long p_309797_);
void requestFinished(boolean p_311898_);
}
} |