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19 package org.eclipse.aether.transport.apache;
20
21 import java.io.IOException;
22 import java.io.InputStream;
23 import java.io.InterruptedIOException;
24 import java.io.OutputStream;
25 import java.io.UncheckedIOException;
26 import java.net.URI;
27 import java.net.URISyntaxException;
28 import java.nio.charset.Charset;
29 import java.nio.file.Files;
30 import java.nio.file.Path;
31 import java.nio.file.StandardCopyOption;
32 import java.util.Date;
33 import java.util.List;
34 import java.util.Map;
35 import java.util.Set;
36 import java.util.function.Function;
37 import java.util.regex.Matcher;
38
39 import org.apache.http.Header;
40 import org.apache.http.HttpEntity;
41 import org.apache.http.HttpEntityEnclosingRequest;
42 import org.apache.http.HttpHeaders;
43 import org.apache.http.HttpHost;
44 import org.apache.http.HttpResponse;
45 import org.apache.http.HttpStatus;
46 import org.apache.http.auth.AuthSchemeProvider;
47 import org.apache.http.auth.AuthScope;
48 import org.apache.http.client.AuthCache;
49 import org.apache.http.client.CredentialsProvider;
50 import org.apache.http.client.HttpRequestRetryHandler;
51 import org.apache.http.client.HttpResponseException;
52 import org.apache.http.client.ServiceUnavailableRetryStrategy;
53 import org.apache.http.client.config.AuthSchemes;
54 import org.apache.http.client.config.CookieSpecs;
55 import org.apache.http.client.config.RequestConfig;
56 import org.apache.http.client.methods.CloseableHttpResponse;
57 import org.apache.http.client.methods.HttpGet;
58 import org.apache.http.client.methods.HttpHead;
59 import org.apache.http.client.methods.HttpOptions;
60 import org.apache.http.client.methods.HttpPut;
61 import org.apache.http.client.methods.HttpUriRequest;
62 import org.apache.http.client.utils.DateUtils;
63 import org.apache.http.client.utils.URIUtils;
64 import org.apache.http.config.Registry;
65 import org.apache.http.config.RegistryBuilder;
66 import org.apache.http.config.SocketConfig;
67 import org.apache.http.entity.AbstractHttpEntity;
68 import org.apache.http.entity.ByteArrayEntity;
69 import org.apache.http.impl.NoConnectionReuseStrategy;
70 import org.apache.http.impl.auth.BasicScheme;
71 import org.apache.http.impl.auth.BasicSchemeFactory;
72 import org.apache.http.impl.auth.DigestSchemeFactory;
73 import org.apache.http.impl.auth.KerberosSchemeFactory;
74 import org.apache.http.impl.auth.NTLMSchemeFactory;
75 import org.apache.http.impl.auth.SPNegoSchemeFactory;
76 import org.apache.http.impl.client.BasicAuthCache;
77 import org.apache.http.impl.client.CloseableHttpClient;
78 import org.apache.http.impl.client.DefaultHttpRequestRetryHandler;
79 import org.apache.http.impl.client.HttpClientBuilder;
80 import org.apache.http.impl.client.LaxRedirectStrategy;
81 import org.apache.http.impl.client.StandardHttpRequestRetryHandler;
82 import org.apache.http.protocol.HttpContext;
83 import org.apache.http.util.EntityUtils;
84 import org.eclipse.aether.RepositorySystemSession;
85 import org.eclipse.aether.repository.AuthenticationContext;
86 import org.eclipse.aether.repository.Proxy;
87 import org.eclipse.aether.repository.RemoteRepository;
88 import org.eclipse.aether.spi.connector.transport.AbstractTransporter;
89 import org.eclipse.aether.spi.connector.transport.GetTask;
90 import org.eclipse.aether.spi.connector.transport.PeekTask;
91 import org.eclipse.aether.spi.connector.transport.PutTask;
92 import org.eclipse.aether.spi.connector.transport.TransportTask;
93 import org.eclipse.aether.spi.connector.transport.http.ChecksumExtractor;
94 import org.eclipse.aether.spi.connector.transport.http.HttpTransporter;
95 import org.eclipse.aether.spi.connector.transport.http.HttpTransporterException;
96 import org.eclipse.aether.spi.io.PathProcessor;
97 import org.eclipse.aether.transfer.NoTransporterException;
98 import org.eclipse.aether.transfer.TransferCancelledException;
99 import org.eclipse.aether.util.ConfigUtils;
100 import org.eclipse.aether.util.StringDigestUtil;
101 import org.eclipse.aether.util.connector.transport.http.HttpTransporterUtils;
102 import org.slf4j.Logger;
103 import org.slf4j.LoggerFactory;
104
105 import static java.util.Objects.requireNonNull;
106 import static org.eclipse.aether.spi.connector.transport.http.HttpConstants.CONTENT_RANGE_PATTERN;
107 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.CONFIG_PROP_FOLLOW_REDIRECTS;
108 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.CONFIG_PROP_HTTP_RETRY_HANDLER_NAME;
109 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.CONFIG_PROP_HTTP_RETRY_HANDLER_REQUEST_SENT_ENABLED;
110 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.CONFIG_PROP_MAX_REDIRECTS;
111 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.CONFIG_PROP_USE_SYSTEM_PROPERTIES;
112 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.DEFAULT_FOLLOW_REDIRECTS;
113 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.DEFAULT_HTTP_RETRY_HANDLER_REQUEST_SENT_ENABLED;
114 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.DEFAULT_MAX_REDIRECTS;
115 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.DEFAULT_USE_SYSTEM_PROPERTIES;
116 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.HTTP_RETRY_HANDLER_NAME_DEFAULT;
117 import static org.eclipse.aether.transport.apache.ApacheTransporterConfigurationKeys.HTTP_RETRY_HANDLER_NAME_STANDARD;
118
119
120
121
122 final class ApacheTransporter extends AbstractTransporter implements HttpTransporter {
123 private static final Logger LOGGER = LoggerFactory.getLogger(ApacheTransporter.class);
124
125 private final ChecksumExtractor checksumExtractor;
126
127 private final PathProcessor pathProcessor;
128
129 private final AuthenticationContext repoAuthContext;
130
131 private final AuthenticationContext proxyAuthContext;
132
133 private final URI baseUri;
134
135 private final HttpHost server;
136
137 private final HttpHost proxy;
138
139 private final CloseableHttpClient client;
140
141 private final Map<?, ?> headers;
142
143 private final LocalState state;
144
145 private final boolean preemptiveAuth;
146
147 private final boolean preemptivePutAuth;
148
149 private final boolean supportWebDav;
150
151 private final AuthCache authCache;
152
153 @SuppressWarnings("checkstyle:methodlength")
154 ApacheTransporter(
155 RemoteRepository repository,
156 RepositorySystemSession session,
157 ChecksumExtractor checksumExtractor,
158 PathProcessor pathProcessor)
159 throws NoTransporterException {
160 this.checksumExtractor = checksumExtractor;
161 this.pathProcessor = pathProcessor;
162 try {
163 this.baseUri = HttpTransporterUtils.getBaseUri(repository);
164 this.server = URIUtils.extractHost(baseUri);
165 if (server == null) {
166 throw new URISyntaxException(repository.getUrl(), "URL lacks host name");
167 }
168 } catch (URISyntaxException e) {
169 throw new NoTransporterException(repository, e.getMessage(), e);
170 }
171 this.proxy = toHost(repository.getProxy());
172
173 this.repoAuthContext = AuthenticationContext.forRepository(session, repository);
174 this.proxyAuthContext = AuthenticationContext.forProxy(session, repository);
175
176 String httpsSecurityMode = HttpTransporterUtils.getHttpsSecurityMode(session, repository);
177 final int connectionMaxTtlSeconds = HttpTransporterUtils.getHttpConnectionMaxTtlSeconds(session, repository);
178 final int maxConnectionsPerRoute = HttpTransporterUtils.getHttpMaxConnectionsPerRoute(session, repository);
179 this.state = new LocalState(
180 session,
181 repository,
182 new ConnMgrConfig(
183 session, repoAuthContext, httpsSecurityMode, connectionMaxTtlSeconds, maxConnectionsPerRoute));
184
185 this.headers = HttpTransporterUtils.getHttpHeaders(session, repository);
186 this.preemptiveAuth = HttpTransporterUtils.isHttpPreemptiveAuth(session, repository);
187 this.preemptivePutAuth = HttpTransporterUtils.isHttpPreemptivePutAuth(session, repository);
188 this.supportWebDav = HttpTransporterUtils.isHttpSupportWebDav(session, repository);
189 int connectTimeout = HttpTransporterUtils.getHttpConnectTimeout(session, repository);
190 int requestTimeout = HttpTransporterUtils.getHttpRequestTimeout(session, repository);
191 int retryCount = HttpTransporterUtils.getHttpRetryHandlerCount(session, repository);
192 long retryInterval = HttpTransporterUtils.getHttpRetryHandlerInterval(session, repository);
193 long retryIntervalMax = HttpTransporterUtils.getHttpRetryHandlerIntervalMax(session, repository);
194 String retryHandlerName = ConfigUtils.getString(
195 session,
196 HTTP_RETRY_HANDLER_NAME_STANDARD,
197 CONFIG_PROP_HTTP_RETRY_HANDLER_NAME + "." + repository.getId(),
198 CONFIG_PROP_HTTP_RETRY_HANDLER_NAME);
199 boolean retryHandlerRequestSentEnabled = ConfigUtils.getBoolean(
200 session,
201 DEFAULT_HTTP_RETRY_HANDLER_REQUEST_SENT_ENABLED,
202 CONFIG_PROP_HTTP_RETRY_HANDLER_REQUEST_SENT_ENABLED + "." + repository.getId(),
203 CONFIG_PROP_HTTP_RETRY_HANDLER_REQUEST_SENT_ENABLED);
204 int maxRedirects = ConfigUtils.getInteger(
205 session,
206 DEFAULT_MAX_REDIRECTS,
207 CONFIG_PROP_MAX_REDIRECTS + "." + repository.getId(),
208 CONFIG_PROP_MAX_REDIRECTS);
209 boolean followRedirects = ConfigUtils.getBoolean(
210 session,
211 DEFAULT_FOLLOW_REDIRECTS,
212 CONFIG_PROP_FOLLOW_REDIRECTS + "." + repository.getId(),
213 CONFIG_PROP_FOLLOW_REDIRECTS);
214 String userAgent = HttpTransporterUtils.getUserAgent(session, repository);
215
216 Charset credentialsCharset = HttpTransporterUtils.getHttpCredentialsEncoding(session, repository);
217 Registry<AuthSchemeProvider> authSchemeRegistry = RegistryBuilder.<AuthSchemeProvider>create()
218 .register(AuthSchemes.BASIC, new BasicSchemeFactory(credentialsCharset))
219 .register(AuthSchemes.DIGEST, new DigestSchemeFactory(credentialsCharset))
220 .register(AuthSchemes.NTLM, new NTLMSchemeFactory())
221 .register(AuthSchemes.SPNEGO, new SPNegoSchemeFactory())
222 .register(AuthSchemes.KERBEROS, new KerberosSchemeFactory())
223 .build();
224 SocketConfig socketConfig =
225
226 SocketConfig.custom().setSoTimeout(requestTimeout).build();
227 RequestConfig requestConfig = RequestConfig.custom()
228 .setMaxRedirects(maxRedirects)
229 .setRedirectsEnabled(followRedirects)
230 .setRelativeRedirectsAllowed(followRedirects)
231
232 .setSocketTimeout(requestTimeout)
233
234 .setConnectTimeout(connectTimeout)
235
236 .setConnectionRequestTimeout(connectTimeout)
237 .setLocalAddress(HttpTransporterUtils.getHttpLocalAddress(session, repository)
238 .orElse(null))
239 .setCookieSpec(CookieSpecs.STANDARD)
240 .build();
241
242 HttpRequestRetryHandler retryHandler;
243 if (HTTP_RETRY_HANDLER_NAME_STANDARD.equals(retryHandlerName)) {
244 retryHandler = new StandardHttpRequestRetryHandler(retryCount, retryHandlerRequestSentEnabled);
245 } else if (HTTP_RETRY_HANDLER_NAME_DEFAULT.equals(retryHandlerName)) {
246 retryHandler = new DefaultHttpRequestRetryHandler(retryCount, retryHandlerRequestSentEnabled);
247 } else {
248 throw new IllegalArgumentException(
249 "Unsupported parameter " + CONFIG_PROP_HTTP_RETRY_HANDLER_NAME + " value: " + retryHandlerName);
250 }
251 ServiceUnavailableRetryStrategy serviceUnavailableRetryStrategy = new ResolverServiceUnavailableRetryStrategy(
252 retryCount,
253 retryInterval,
254 retryIntervalMax,
255 HttpTransporterUtils.getHttpServiceUnavailableCodes(session, repository));
256
257 HttpClientBuilder builder = HttpClientBuilder.create()
258 .setUserAgent(userAgent)
259 .setRedirectStrategy(LaxRedirectStrategy.INSTANCE)
260 .setDefaultSocketConfig(socketConfig)
261 .setDefaultRequestConfig(requestConfig)
262 .setServiceUnavailableRetryStrategy(serviceUnavailableRetryStrategy)
263 .setRetryHandler(retryHandler)
264 .setDefaultAuthSchemeRegistry(authSchemeRegistry)
265 .setConnectionManager(state.getConnectionManager())
266 .setConnectionManagerShared(true)
267 .setDefaultCredentialsProvider(toCredentialsProvider(server, repoAuthContext, proxy, proxyAuthContext))
268 .setProxy(proxy);
269 final boolean useSystemProperties = ConfigUtils.getBoolean(
270 session,
271 DEFAULT_USE_SYSTEM_PROPERTIES,
272 CONFIG_PROP_USE_SYSTEM_PROPERTIES + "." + repository.getId(),
273 CONFIG_PROP_USE_SYSTEM_PROPERTIES);
274 if (useSystemProperties) {
275 LOGGER.warn(
276 "Transport used Apache HttpClient is instructed to use system properties: this may yield in unwanted side-effects!");
277 LOGGER.warn("Please use documented means to configure resolver transport.");
278 builder.useSystemProperties();
279 }
280
281 HttpTransporterUtils.getHttpExpectContinue(session, repository).ifPresent(state::setExpectContinue);
282 if (!HttpTransporterUtils.isHttpReuseConnections(session, repository)) {
283 builder.setConnectionReuseStrategy(NoConnectionReuseStrategy.INSTANCE);
284 }
285
286 if (session.getCache() != null) {
287 String authCacheKey = getClass().getSimpleName() + "-" + repository.getId() + "-"
288 + StringDigestUtil.sha1(repository.toString());
289 this.authCache = (AuthCache) session.getCache().computeIfAbsent(session, authCacheKey, BasicAuthCache::new);
290 } else {
291 this.authCache = new BasicAuthCache();
292 }
293 this.client = builder.build();
294 }
295
296 private static HttpHost toHost(Proxy proxy) {
297 HttpHost host = null;
298 if (proxy != null) {
299
300
301
302
303 host = new HttpHost(proxy.getHost(), proxy.getPort());
304 }
305 return host;
306 }
307
308 private static CredentialsProvider toCredentialsProvider(
309 HttpHost server, AuthenticationContext serverAuthCtx, HttpHost proxy, AuthenticationContext proxyAuthCtx) {
310 CredentialsProvider provider = toCredentialsProvider(server.getHostName(), AuthScope.ANY_PORT, serverAuthCtx);
311 if (proxy != null) {
312 CredentialsProvider p = toCredentialsProvider(proxy.getHostName(), proxy.getPort(), proxyAuthCtx);
313 provider = new DemuxCredentialsProvider(provider, p, proxy);
314 }
315 return provider;
316 }
317
318 private static CredentialsProvider toCredentialsProvider(String host, int port, AuthenticationContext ctx) {
319 DeferredCredentialsProvider provider = new DeferredCredentialsProvider();
320 if (ctx != null) {
321 AuthScope basicScope = new AuthScope(host, port);
322 provider.setCredentials(basicScope, new DeferredCredentialsProvider.BasicFactory(ctx));
323
324 AuthScope ntlmScope = new AuthScope(host, port, AuthScope.ANY_REALM, "ntlm");
325 provider.setCredentials(ntlmScope, new DeferredCredentialsProvider.NtlmFactory(ctx));
326 }
327 return provider;
328 }
329
330 LocalState getState() {
331 return state;
332 }
333
334 private URI resolve(TransportTask task) {
335 return UriUtils.resolve(baseUri, task.getLocation());
336 }
337
338 @Override
339 protected void implPeek(PeekTask task) throws Exception {
340 HttpHead request = commonHeaders(new HttpHead(resolve(task)));
341 try {
342 execute(request, null);
343 } catch (HttpResponseException e) {
344 throw new HttpTransporterException(e.getStatusCode());
345 }
346 }
347
348 @Override
349 protected void implGet(GetTask task) throws Exception {
350 boolean resume = true;
351
352 EntityGetter getter = new EntityGetter(task);
353 HttpGet request = commonHeaders(new HttpGet(resolve(task)));
354 ApacheRFC9457Reporter.INSTANCE.prepareRequest(request);
355 while (true) {
356 try {
357 if (resume) {
358 resume(request, task);
359 }
360 execute(request, getter);
361 break;
362 } catch (HttpResponseException e) {
363 if (resume
364 && e.getStatusCode() == HttpStatus.SC_PRECONDITION_FAILED
365 && request.containsHeader(HttpHeaders.RANGE)) {
366 request = commonHeaders(new HttpGet(resolve(task)));
367 resume = false;
368 continue;
369 }
370 throw new HttpTransporterException(e.getStatusCode());
371 }
372 }
373 }
374
375 @Override
376 protected void implPut(PutTask task) throws Exception {
377 PutTaskEntity entity = new PutTaskEntity(task);
378 HttpPut request = commonHeaders(entity(new HttpPut(resolve(task)), entity));
379 ApacheRFC9457Reporter.INSTANCE.prepareRequest(request);
380 try {
381 execute(request, null);
382 } catch (HttpResponseException e) {
383 if (e.getStatusCode() == HttpStatus.SC_EXPECTATION_FAILED && request.containsHeader(HttpHeaders.EXPECT)) {
384 state.setExpectContinue(false);
385 request = commonHeaders(entity(new HttpPut(request.getURI()), entity));
386 execute(request, null);
387 return;
388 }
389 throw new HttpTransporterException(e.getStatusCode());
390 }
391 }
392
393 private void execute(HttpUriRequest request, EntityGetter getter) throws Exception {
394 try {
395 SharingHttpContext context = new SharingHttpContext(state);
396 context.setAuthCache(authCache);
397 prepare(request, context);
398 try (CloseableHttpResponse response = client.execute(server, request, context)) {
399 try {
400 handleStatus(response);
401 if (getter != null) {
402 getter.handle(response);
403 }
404 } finally {
405 EntityUtils.consumeQuietly(response.getEntity());
406 }
407 }
408 } catch (IOException e) {
409 if (e.getCause() instanceof TransferCancelledException) {
410 throw (Exception) e.getCause();
411 }
412 throw e;
413 }
414 }
415
416 private void prepare(HttpUriRequest request, SharingHttpContext context) throws Exception {
417 final boolean put = HttpPut.METHOD_NAME.equalsIgnoreCase(request.getMethod());
418 if (preemptiveAuth || (preemptivePutAuth && put)) {
419 context.getAuthCache().put(server, new BasicScheme());
420 }
421 if (supportWebDav) {
422 if (state.getWebDav() == null && (put || isPayloadPresent(request))) {
423 HttpOptions req = commonHeaders(new HttpOptions(request.getURI()));
424 try (CloseableHttpResponse response = client.execute(server, req, context)) {
425 state.setWebDav(response.containsHeader(HttpHeaders.DAV));
426 EntityUtils.consumeQuietly(response.getEntity());
427 } catch (IOException e) {
428 LOGGER.debug("Failed to prepare HTTP context", e);
429 }
430 }
431 if (put && Boolean.TRUE.equals(state.getWebDav())) {
432 mkdirs(request.getURI(), context);
433 }
434 }
435 }
436
437 private void mkdirs(URI uri, SharingHttpContext context) throws Exception {
438 List<URI> dirs = UriUtils.getDirectories(baseUri, uri);
439 int index = 0;
440 for (; index < dirs.size(); index++) {
441 try (CloseableHttpResponse response =
442 client.execute(server, commonHeaders(new HttpMkCol(dirs.get(index))), context)) {
443 try {
444 int status = response.getStatusLine().getStatusCode();
445 if (status < 300 || status == HttpStatus.SC_METHOD_NOT_ALLOWED) {
446 break;
447 } else if (status == HttpStatus.SC_CONFLICT) {
448 continue;
449 }
450 handleStatus(response);
451 } finally {
452 EntityUtils.consumeQuietly(response.getEntity());
453 }
454 } catch (IOException e) {
455 LOGGER.debug("Failed to create parent directory {}", dirs.get(index), e);
456 return;
457 }
458 }
459 for (index--; index >= 0; index--) {
460 try (CloseableHttpResponse response =
461 client.execute(server, commonHeaders(new HttpMkCol(dirs.get(index))), context)) {
462 try {
463 handleStatus(response);
464 } finally {
465 EntityUtils.consumeQuietly(response.getEntity());
466 }
467 } catch (IOException e) {
468 LOGGER.debug("Failed to create parent directory {}", dirs.get(index), e);
469 return;
470 }
471 }
472 }
473
474 private <T extends HttpEntityEnclosingRequest> T entity(T request, HttpEntity entity) {
475 request.setEntity(entity);
476 return request;
477 }
478
479 private boolean isPayloadPresent(HttpUriRequest request) {
480 if (request instanceof HttpEntityEnclosingRequest) {
481 HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity();
482 return entity != null && entity.getContentLength() != 0;
483 }
484 return false;
485 }
486
487 private <T extends HttpUriRequest> T commonHeaders(T request) {
488 request.setHeader(HttpHeaders.CACHE_CONTROL, "no-cache, no-store");
489 request.setHeader(HttpHeaders.PRAGMA, "no-cache");
490
491 if (state.isExpectContinue() && isPayloadPresent(request)) {
492 request.setHeader(HttpHeaders.EXPECT, "100-continue");
493 }
494
495 for (Map.Entry<?, ?> entry : headers.entrySet()) {
496 if (!(entry.getKey() instanceof String)) {
497 continue;
498 }
499 if (entry.getValue() instanceof String) {
500 request.setHeader(entry.getKey().toString(), entry.getValue().toString());
501 } else {
502 request.removeHeaders(entry.getKey().toString());
503 }
504 }
505
506 if (!state.isExpectContinue()) {
507 request.removeHeaders(HttpHeaders.EXPECT);
508 }
509 return request;
510 }
511
512 private <T extends HttpUriRequest> void resume(T request, GetTask task) throws IOException {
513 long resumeOffset = task.getResumeOffset();
514 if (resumeOffset > 0L && task.getDataPath() != null) {
515 long lastModified = Files.getLastModifiedTime(task.getDataPath()).toMillis();
516 request.setHeader(HttpHeaders.RANGE, "bytes=" + resumeOffset + '-');
517 request.setHeader(
518 HttpHeaders.IF_UNMODIFIED_SINCE, DateUtils.formatDate(new Date(lastModified - 60L * 1000L)));
519 request.setHeader(HttpHeaders.ACCEPT_ENCODING, "identity");
520 }
521 }
522
523 private void handleStatus(CloseableHttpResponse response) throws Exception {
524 int status = response.getStatusLine().getStatusCode();
525 if (status >= 300) {
526 ApacheRFC9457Reporter.INSTANCE.generateException(response, (statusCode, reasonPhrase) -> {
527 throw new HttpResponseException(statusCode, reasonPhrase + " (" + statusCode + ")");
528 });
529 }
530 }
531
532 @Override
533 protected void implClose() {
534 try {
535 client.close();
536 } catch (IOException e) {
537 throw new UncheckedIOException(e);
538 }
539 AuthenticationContext.close(repoAuthContext);
540 AuthenticationContext.close(proxyAuthContext);
541 state.close();
542 }
543
544 private class EntityGetter {
545
546 private final GetTask task;
547
548 EntityGetter(GetTask task) {
549 this.task = task;
550 }
551
552 public void handle(CloseableHttpResponse response) throws IOException, TransferCancelledException {
553 HttpEntity entity = response.getEntity();
554 if (entity == null) {
555 entity = new ByteArrayEntity(new byte[0]);
556 }
557
558 long offset = 0L, length = entity.getContentLength();
559 Header rangeHeader = response.getFirstHeader(HttpHeaders.CONTENT_RANGE);
560 String range = rangeHeader != null ? rangeHeader.getValue() : null;
561 if (range != null) {
562 Matcher m = CONTENT_RANGE_PATTERN.matcher(range);
563 if (!m.matches()) {
564 throw new IOException("Invalid Content-Range header for partial download: " + range);
565 }
566 offset = Long.parseLong(m.group(1));
567 length = Long.parseLong(m.group(2)) + 1L;
568 if (offset < 0L || offset >= length || (offset > 0L && offset != task.getResumeOffset())) {
569 throw new IOException("Invalid Content-Range header for partial download from offset "
570 + task.getResumeOffset() + ": " + range);
571 }
572 }
573
574 final boolean resume = offset > 0L;
575 final Path dataFile = task.getDataPath();
576 if (dataFile == null) {
577 try (InputStream is = entity.getContent()) {
578 utilGet(task, is, true, length, resume);
579 extractChecksums(response);
580 }
581 } else {
582 try (PathProcessor.CollocatedTempFile tempFile = pathProcessor.newTempFile(dataFile)) {
583 task.setDataPath(tempFile.getPath(), resume);
584 if (resume && Files.isRegularFile(dataFile)) {
585 try (InputStream inputStream = Files.newInputStream(dataFile)) {
586 Files.copy(inputStream, tempFile.getPath(), StandardCopyOption.REPLACE_EXISTING);
587 }
588 }
589 try (InputStream is = entity.getContent()) {
590 utilGet(task, is, true, length, resume);
591 }
592 tempFile.move();
593 } finally {
594 task.setDataPath(dataFile);
595 }
596 }
597 if (task.getDataPath() != null) {
598 Header lastModifiedHeader =
599 response.getFirstHeader(HttpHeaders.LAST_MODIFIED);
600 if (lastModifiedHeader != null) {
601 Date lastModified = DateUtils.parseDate(lastModifiedHeader.getValue());
602 if (lastModified != null) {
603 pathProcessor.setLastModified(task.getDataPath(), lastModified.getTime());
604 }
605 }
606 }
607 extractChecksums(response);
608 }
609
610 private void extractChecksums(CloseableHttpResponse response) {
611 Map<String, String> checksums = checksumExtractor.extractChecksums(headerGetter(response));
612 if (checksums != null && !checksums.isEmpty()) {
613 checksums.forEach(task::setChecksum);
614 }
615 }
616 }
617
618 private static Function<String, String> headerGetter(CloseableHttpResponse closeableHttpResponse) {
619 return s -> {
620 Header header = closeableHttpResponse.getFirstHeader(s);
621 return header != null ? header.getValue() : null;
622 };
623 }
624
625 private class PutTaskEntity extends AbstractHttpEntity {
626
627 private final PutTask task;
628
629 PutTaskEntity(PutTask task) {
630 this.task = task;
631 }
632
633 @Override
634 public boolean isRepeatable() {
635 return true;
636 }
637
638 @Override
639 public boolean isStreaming() {
640 return false;
641 }
642
643 @Override
644 public long getContentLength() {
645 return task.getDataLength();
646 }
647
648 @Override
649 public InputStream getContent() throws IOException {
650 return task.newInputStream();
651 }
652
653 @Override
654 public void writeTo(OutputStream os) throws IOException {
655 try {
656 utilPut(task, os, false);
657 } catch (TransferCancelledException e) {
658 throw (IOException) new InterruptedIOException().initCause(e);
659 }
660 }
661 }
662
663 private static class ResolverServiceUnavailableRetryStrategy implements ServiceUnavailableRetryStrategy {
664 private final int retryCount;
665
666 private final long retryInterval;
667
668 private final long retryIntervalMax;
669
670 private final Set<Integer> serviceUnavailableHttpCodes;
671
672
673
674
675
676
677 private static final ThreadLocal<Long> RETRY_INTERVAL_HOLDER = new ThreadLocal<>();
678
679 private ResolverServiceUnavailableRetryStrategy(
680 int retryCount, long retryInterval, long retryIntervalMax, Set<Integer> serviceUnavailableHttpCodes) {
681 if (retryCount < 0) {
682 throw new IllegalArgumentException("retryCount must be >= 0");
683 }
684 if (retryInterval < 0L) {
685 throw new IllegalArgumentException("retryInterval must be >= 0");
686 }
687 if (retryIntervalMax < 0L) {
688 throw new IllegalArgumentException("retryIntervalMax must be >= 0");
689 }
690 this.retryCount = retryCount;
691 this.retryInterval = retryInterval;
692 this.retryIntervalMax = retryIntervalMax;
693 this.serviceUnavailableHttpCodes = requireNonNull(serviceUnavailableHttpCodes);
694 }
695
696 @Override
697 public boolean retryRequest(HttpResponse response, int executionCount, HttpContext context) {
698 final boolean retry = executionCount <= retryCount
699 && (serviceUnavailableHttpCodes.contains(
700 response.getStatusLine().getStatusCode()));
701 if (retry) {
702 Long retryInterval = retryInterval(response, executionCount, context);
703 if (retryInterval != null) {
704 RETRY_INTERVAL_HOLDER.set(retryInterval);
705 return true;
706 }
707 }
708 RETRY_INTERVAL_HOLDER.remove();
709 return false;
710 }
711
712
713
714
715
716
717
718
719 private Long retryInterval(HttpResponse httpResponse, int executionCount, HttpContext httpContext) {
720 Long result = null;
721 Header header = httpResponse.getFirstHeader(HttpHeaders.RETRY_AFTER);
722 if (header != null && header.getValue() != null) {
723 String headerValue = header.getValue();
724 if (headerValue.contains(":")) {
725 Date when = DateUtils.parseDate(headerValue);
726 if (when != null) {
727 result = Math.max(when.getTime() - System.currentTimeMillis(), 0L);
728 }
729 } else {
730 try {
731 result = Long.parseLong(headerValue) * 1000L;
732 } catch (NumberFormatException e) {
733
734 }
735 }
736 }
737 if (result == null) {
738 result = executionCount * this.retryInterval;
739 }
740 if (result > retryIntervalMax) {
741 return null;
742 }
743 return result;
744 }
745
746 @Override
747 public long getRetryInterval() {
748 Long ri = RETRY_INTERVAL_HOLDER.get();
749 if (ri == null) {
750 return 0L;
751 }
752 RETRY_INTERVAL_HOLDER.remove();
753 return ri;
754 }
755 }
756 }