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Merge remote-tracking branch 'origin/jetty-10.0.x' into jetty-11.0.x
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122 changes: 122 additions & 0 deletions
122
jetty-start/src/main/java/org/eclipse/jetty/start/fileinits/DownloadFileInitializer.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,122 @@ | ||
| // | ||
| // ======================================================================== | ||
| // Copyright (c) 1995 Mort Bay Consulting Pty Ltd and others. | ||
| // | ||
| // This program and the accompanying materials are made available under the | ||
| // terms of the Eclipse Public License v. 2.0 which is available at | ||
| // https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 | ||
| // which is available at https://www.apache.org/licenses/LICENSE-2.0. | ||
| // | ||
| // SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 | ||
| // ======================================================================== | ||
| // | ||
|
|
||
| package org.eclipse.jetty.start.fileinits; | ||
|
|
||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.net.ProxySelector; | ||
| import java.net.URI; | ||
| import java.net.http.HttpClient; | ||
| import java.net.http.HttpRequest; | ||
| import java.net.http.HttpResponse; | ||
| import java.nio.file.Files; | ||
| import java.nio.file.Path; | ||
| import java.nio.file.StandardCopyOption; | ||
| import java.util.Optional; | ||
|
|
||
| import org.eclipse.jetty.start.BaseHome; | ||
| import org.eclipse.jetty.start.FS; | ||
| import org.eclipse.jetty.start.FileInitializer; | ||
| import org.eclipse.jetty.start.StartArgs; | ||
| import org.eclipse.jetty.start.StartLog; | ||
|
|
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| public abstract class DownloadFileInitializer extends FileInitializer | ||
| { | ||
| private HttpClient httpClient; | ||
|
|
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| protected DownloadFileInitializer(BaseHome basehome, String... scheme) | ||
| { | ||
| super(basehome, scheme); | ||
| } | ||
|
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| protected abstract boolean allowInsecureHttpDownloads(); | ||
|
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| protected void download(URI uri, Path destination) throws IOException | ||
| { | ||
| if ("http".equalsIgnoreCase(uri.getScheme()) && !allowInsecureHttpDownloads()) | ||
| throw new IOException("Insecure HTTP download not allowed (use " + StartArgs.ARG_ALLOW_INSECURE_HTTP_DOWNLOADS + " to bypass): " + uri); | ||
|
|
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| if (Files.exists(destination)) | ||
| { | ||
| if (Files.isRegularFile(destination)) | ||
| { | ||
| StartLog.warn("skipping download of %s : file exists in destination %s", uri, destination); | ||
| } | ||
| else | ||
| { | ||
| StartLog.warn("skipping download of %s : path conflict at destination %s", uri, destination); | ||
| } | ||
| return; | ||
| } | ||
|
|
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| if (FS.ensureDirectoryExists(destination.getParent())) | ||
| StartLog.info("mkdir " + _basehome.toShortForm(destination.getParent())); | ||
|
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| StartLog.info("download %s to %s", uri, _basehome.toShortForm(destination)); | ||
|
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| HttpClient httpClient = getHttpClient(); | ||
|
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| try | ||
| { | ||
| HttpRequest request = HttpRequest.newBuilder() | ||
| .uri(uri) | ||
| .GET() | ||
| .build(); | ||
|
|
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| HttpResponse<InputStream> response = | ||
| httpClient.send(request, HttpResponse.BodyHandlers.ofInputStream()); | ||
|
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| int status = response.statusCode(); | ||
|
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| if (!allowInsecureHttpDownloads() && (status >= 300) && (status <= 399)) | ||
| { | ||
| // redirection status, provide more details in error | ||
| Optional<String> location = response.headers().firstValue("Location"); | ||
| if (location.isPresent()) | ||
| { | ||
| throw new IOException("URL GET Failure [status " + status + "] on " + uri + | ||
| " wanting to redirect to insecure HTTP location (use " + | ||
| StartArgs.ARG_ALLOW_INSECURE_HTTP_DOWNLOADS + " to bypass): " + | ||
| location.get()); | ||
| } | ||
| } | ||
|
|
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| if (status != 200) | ||
| { | ||
| throw new IOException("URL GET Failure [status " + status + "] on " + uri); | ||
| } | ||
|
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| try (InputStream in = response.body()) | ||
| { | ||
| Files.copy(in, destination, StandardCopyOption.REPLACE_EXISTING); | ||
| } | ||
| } | ||
| catch (InterruptedException e) | ||
| { | ||
| throw new IOException("Failed to GET: " + uri, e); | ||
| } | ||
| } | ||
|
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| private HttpClient getHttpClient() | ||
| { | ||
| if (httpClient == null) | ||
| { | ||
| httpClient = HttpClient.newBuilder() | ||
| .followRedirects(allowInsecureHttpDownloads() ? HttpClient.Redirect.ALWAYS : HttpClient.Redirect.NORMAL) | ||
| .proxy(ProxySelector.getDefault()) | ||
| .build(); | ||
| } | ||
| return httpClient; | ||
| } | ||
| } |
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