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19 package org.eclipse.aether.transport.http;
20
21 import java.io.File;
22 import java.io.IOException;
23 import java.io.InputStream;
24 import java.io.InterruptedIOException;
25 import java.io.OutputStream;
26 import java.io.UncheckedIOException;
27 import java.net.InetAddress;
28 import java.net.URI;
29 import java.net.URISyntaxException;
30 import java.net.UnknownHostException;
31 import java.nio.charset.Charset;
32 import java.nio.file.Files;
33 import java.nio.file.StandardCopyOption;
34 import java.nio.file.attribute.FileTime;
35 import java.util.Collections;
36 import java.util.Date;
37 import java.util.HashSet;
38 import java.util.List;
39 import java.util.Map;
40 import java.util.Set;
41 import java.util.regex.Matcher;
42 import java.util.regex.Pattern;
43
44 import org.apache.http.Header;
45 import org.apache.http.HttpEntity;
46 import org.apache.http.HttpEntityEnclosingRequest;
47 import org.apache.http.HttpHeaders;
48 import org.apache.http.HttpHost;
49 import org.apache.http.HttpResponse;
50 import org.apache.http.HttpStatus;
51 import org.apache.http.auth.AuthSchemeProvider;
52 import org.apache.http.auth.AuthScope;
53 import org.apache.http.client.CredentialsProvider;
54 import org.apache.http.client.HttpRequestRetryHandler;
55 import org.apache.http.client.HttpResponseException;
56 import org.apache.http.client.ServiceUnavailableRetryStrategy;
57 import org.apache.http.client.config.AuthSchemes;
58 import org.apache.http.client.config.RequestConfig;
59 import org.apache.http.client.methods.CloseableHttpResponse;
60 import org.apache.http.client.methods.HttpGet;
61 import org.apache.http.client.methods.HttpHead;
62 import org.apache.http.client.methods.HttpOptions;
63 import org.apache.http.client.methods.HttpPut;
64 import org.apache.http.client.methods.HttpUriRequest;
65 import org.apache.http.client.utils.DateUtils;
66 import org.apache.http.client.utils.URIUtils;
67 import org.apache.http.config.Registry;
68 import org.apache.http.config.RegistryBuilder;
69 import org.apache.http.config.SocketConfig;
70 import org.apache.http.entity.AbstractHttpEntity;
71 import org.apache.http.entity.ByteArrayEntity;
72 import org.apache.http.impl.NoConnectionReuseStrategy;
73 import org.apache.http.impl.auth.BasicScheme;
74 import org.apache.http.impl.auth.BasicSchemeFactory;
75 import org.apache.http.impl.auth.DigestSchemeFactory;
76 import org.apache.http.impl.auth.KerberosSchemeFactory;
77 import org.apache.http.impl.auth.NTLMSchemeFactory;
78 import org.apache.http.impl.auth.SPNegoSchemeFactory;
79 import org.apache.http.impl.client.CloseableHttpClient;
80 import org.apache.http.impl.client.DefaultHttpRequestRetryHandler;
81 import org.apache.http.impl.client.HttpClientBuilder;
82 import org.apache.http.impl.client.StandardHttpRequestRetryHandler;
83 import org.apache.http.protocol.HttpContext;
84 import org.apache.http.util.EntityUtils;
85 import org.eclipse.aether.ConfigurationProperties;
86 import org.eclipse.aether.RepositorySystemSession;
87 import org.eclipse.aether.repository.AuthenticationContext;
88 import org.eclipse.aether.repository.Proxy;
89 import org.eclipse.aether.repository.RemoteRepository;
90 import org.eclipse.aether.spi.connector.transport.AbstractTransporter;
91 import org.eclipse.aether.spi.connector.transport.GetTask;
92 import org.eclipse.aether.spi.connector.transport.PeekTask;
93 import org.eclipse.aether.spi.connector.transport.PutTask;
94 import org.eclipse.aether.spi.connector.transport.TransportTask;
95 import org.eclipse.aether.transfer.NoTransporterException;
96 import org.eclipse.aether.transfer.TransferCancelledException;
97 import org.eclipse.aether.util.ConfigUtils;
98 import org.eclipse.aether.util.FileUtils;
99 import org.slf4j.Logger;
100 import org.slf4j.LoggerFactory;
101
102 import static java.util.Objects.requireNonNull;
103
104
105
106
107 final class HttpTransporter extends AbstractTransporter {
108
109 static final String USE_SYSTEM_PROPERTIES = "aether.connector.http.useSystemProperties";
110
111 static final String HTTP_RETRY_HANDLER_NAME = "aether.connector.http.retryHandler.name";
112
113 private static final String HTTP_RETRY_HANDLER_NAME_STANDARD = "standard";
114
115 private static final String HTTP_RETRY_HANDLER_NAME_DEFAULT = "default";
116
117 static final String HTTP_RETRY_HANDLER_REQUEST_SENT_ENABLED =
118 "aether.connector.http.retryHandler.requestSentEnabled";
119
120 private static final Pattern CONTENT_RANGE_PATTERN =
121 Pattern.compile("\\s*bytes\\s+([0-9]+)\\s*-\\s*([0-9]+)\\s*/.*");
122
123 private static final Logger LOGGER = LoggerFactory.getLogger(HttpTransporter.class);
124
125 private final Map<String, ChecksumExtractor> checksumExtractors;
126
127 private final AuthenticationContext repoAuthContext;
128
129 private final AuthenticationContext proxyAuthContext;
130
131 private final URI baseUri;
132
133 private final HttpHost server;
134
135 private final HttpHost proxy;
136
137 private final CloseableHttpClient client;
138
139 private final Map<?, ?> headers;
140
141 private final LocalState state;
142
143 private final boolean preemptiveAuth;
144
145 private final boolean preemptivePutAuth;
146
147 private final boolean supportWebDav;
148
149 @SuppressWarnings("checkstyle:methodlength")
150 HttpTransporter(
151 Map<String, ChecksumExtractor> checksumExtractors,
152 RemoteRepository repository,
153 RepositorySystemSession session)
154 throws NoTransporterException {
155 if (!"http".equalsIgnoreCase(repository.getProtocol()) && !"https".equalsIgnoreCase(repository.getProtocol())) {
156 throw new NoTransporterException(repository);
157 }
158 this.checksumExtractors = requireNonNull(checksumExtractors, "checksum extractors must not be null");
159 try {
160 this.baseUri = new URI(repository.getUrl()).parseServerAuthority();
161 if (baseUri.isOpaque()) {
162 throw new URISyntaxException(repository.getUrl(), "URL must not be opaque");
163 }
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 = ConfigUtils.getString(
177 session,
178 ConfigurationProperties.HTTPS_SECURITY_MODE_DEFAULT,
179 ConfigurationProperties.HTTPS_SECURITY_MODE + "." + repository.getId(),
180 ConfigurationProperties.HTTPS_SECURITY_MODE);
181 final int connectionMaxTtlSeconds = ConfigUtils.getInteger(
182 session,
183 ConfigurationProperties.DEFAULT_HTTP_CONNECTION_MAX_TTL,
184 ConfigurationProperties.HTTP_CONNECTION_MAX_TTL + "." + repository.getId(),
185 ConfigurationProperties.HTTP_CONNECTION_MAX_TTL);
186 final int maxConnectionsPerRoute = ConfigUtils.getInteger(
187 session,
188 ConfigurationProperties.DEFAULT_HTTP_MAX_CONNECTIONS_PER_ROUTE,
189 ConfigurationProperties.HTTP_MAX_CONNECTIONS_PER_ROUTE + "." + repository.getId(),
190 ConfigurationProperties.HTTP_MAX_CONNECTIONS_PER_ROUTE);
191 this.state = new LocalState(
192 session,
193 repository,
194 new ConnMgrConfig(
195 session, repoAuthContext, httpsSecurityMode, connectionMaxTtlSeconds, maxConnectionsPerRoute));
196
197 this.headers = ConfigUtils.getMap(
198 session,
199 Collections.emptyMap(),
200 ConfigurationProperties.HTTP_HEADERS + "." + repository.getId(),
201 ConfigurationProperties.HTTP_HEADERS);
202
203 this.preemptiveAuth = ConfigUtils.getBoolean(
204 session,
205 ConfigurationProperties.DEFAULT_HTTP_PREEMPTIVE_AUTH,
206 ConfigurationProperties.HTTP_PREEMPTIVE_AUTH + "." + repository.getId(),
207 ConfigurationProperties.HTTP_PREEMPTIVE_AUTH);
208 this.preemptivePutAuth = ConfigUtils.getBoolean(
209 session,
210 ConfigurationProperties.DEFAULT_HTTP_PREEMPTIVE_PUT_AUTH,
211 ConfigurationProperties.HTTP_PREEMPTIVE_PUT_AUTH + "." + repository.getId(),
212 ConfigurationProperties.HTTP_PREEMPTIVE_PUT_AUTH);
213 this.supportWebDav = ConfigUtils.getBoolean(
214 session,
215 ConfigurationProperties.DEFAULT_HTTP_SUPPORT_WEBDAV,
216 ConfigurationProperties.HTTP_SUPPORT_WEBDAV + "." + repository.getId(),
217 ConfigurationProperties.HTTP_SUPPORT_WEBDAV);
218 String credentialEncoding = ConfigUtils.getString(
219 session,
220 ConfigurationProperties.DEFAULT_HTTP_CREDENTIAL_ENCODING,
221 ConfigurationProperties.HTTP_CREDENTIAL_ENCODING + "." + repository.getId(),
222 ConfigurationProperties.HTTP_CREDENTIAL_ENCODING);
223 int connectTimeout = ConfigUtils.getInteger(
224 session,
225 ConfigurationProperties.DEFAULT_CONNECT_TIMEOUT,
226 ConfigurationProperties.CONNECT_TIMEOUT + "." + repository.getId(),
227 ConfigurationProperties.CONNECT_TIMEOUT);
228 int requestTimeout = ConfigUtils.getInteger(
229 session,
230 ConfigurationProperties.DEFAULT_REQUEST_TIMEOUT,
231 ConfigurationProperties.REQUEST_TIMEOUT + "." + repository.getId(),
232 ConfigurationProperties.REQUEST_TIMEOUT);
233 int retryCount = ConfigUtils.getInteger(
234 session,
235 ConfigurationProperties.DEFAULT_HTTP_RETRY_HANDLER_COUNT,
236 ConfigurationProperties.HTTP_RETRY_HANDLER_COUNT + "." + repository.getId(),
237 ConfigurationProperties.HTTP_RETRY_HANDLER_COUNT);
238 long retryInterval = ConfigUtils.getLong(
239 session,
240 ConfigurationProperties.DEFAULT_HTTP_RETRY_HANDLER_INTERVAL,
241 ConfigurationProperties.HTTP_RETRY_HANDLER_INTERVAL + "." + repository.getId(),
242 ConfigurationProperties.HTTP_RETRY_HANDLER_INTERVAL);
243 long retryIntervalMax = ConfigUtils.getLong(
244 session,
245 ConfigurationProperties.DEFAULT_HTTP_RETRY_HANDLER_INTERVAL_MAX,
246 ConfigurationProperties.HTTP_RETRY_HANDLER_INTERVAL_MAX + "." + repository.getId(),
247 ConfigurationProperties.HTTP_RETRY_HANDLER_INTERVAL_MAX);
248 String serviceUnavailableCodesString = ConfigUtils.getString(
249 session,
250 ConfigurationProperties.DEFAULT_HTTP_RETRY_HANDLER_SERVICE_UNAVAILABLE,
251 ConfigurationProperties.HTTP_RETRY_HANDLER_SERVICE_UNAVAILABLE + "." + repository.getId(),
252 ConfigurationProperties.HTTP_RETRY_HANDLER_SERVICE_UNAVAILABLE);
253 String retryHandlerName = ConfigUtils.getString(
254 session,
255 HTTP_RETRY_HANDLER_NAME_STANDARD,
256 HTTP_RETRY_HANDLER_NAME + "." + repository.getId(),
257 HTTP_RETRY_HANDLER_NAME);
258 boolean retryHandlerRequestSentEnabled = ConfigUtils.getBoolean(
259 session,
260 false,
261 HTTP_RETRY_HANDLER_REQUEST_SENT_ENABLED + "." + repository.getId(),
262 HTTP_RETRY_HANDLER_REQUEST_SENT_ENABLED);
263 String userAgent = ConfigUtils.getString(
264 session, ConfigurationProperties.DEFAULT_USER_AGENT, ConfigurationProperties.USER_AGENT);
265
266 Charset credentialsCharset = Charset.forName(credentialEncoding);
267 Registry<AuthSchemeProvider> authSchemeRegistry = RegistryBuilder.<AuthSchemeProvider>create()
268 .register(AuthSchemes.BASIC, new BasicSchemeFactory(credentialsCharset))
269 .register(AuthSchemes.DIGEST, new DigestSchemeFactory(credentialsCharset))
270 .register(AuthSchemes.NTLM, new NTLMSchemeFactory())
271 .register(AuthSchemes.SPNEGO, new SPNegoSchemeFactory())
272 .register(AuthSchemes.KERBEROS, new KerberosSchemeFactory())
273 .build();
274 SocketConfig socketConfig =
275 SocketConfig.custom().setSoTimeout(requestTimeout).build();
276 RequestConfig requestConfig = RequestConfig.custom()
277 .setConnectTimeout(connectTimeout)
278 .setConnectionRequestTimeout(connectTimeout)
279 .setLocalAddress(getHttpLocalAddress(session, repository))
280 .setSocketTimeout(requestTimeout)
281 .build();
282
283 HttpRequestRetryHandler retryHandler;
284 if (HTTP_RETRY_HANDLER_NAME_STANDARD.equals(retryHandlerName)) {
285 retryHandler = new StandardHttpRequestRetryHandler(retryCount, retryHandlerRequestSentEnabled);
286 } else if (HTTP_RETRY_HANDLER_NAME_DEFAULT.equals(retryHandlerName)) {
287 retryHandler = new DefaultHttpRequestRetryHandler(retryCount, retryHandlerRequestSentEnabled);
288 } else {
289 throw new IllegalArgumentException(
290 "Unsupported parameter " + HTTP_RETRY_HANDLER_NAME + " value: " + retryHandlerName);
291 }
292 Set<Integer> serviceUnavailableCodes = new HashSet<>();
293 try {
294 for (String code : ConfigUtils.parseCommaSeparatedUniqueNames(serviceUnavailableCodesString)) {
295 serviceUnavailableCodes.add(Integer.parseInt(code));
296 }
297 } catch (NumberFormatException e) {
298 throw new IllegalArgumentException(
299 "Illegal HTTP codes for " + ConfigurationProperties.HTTP_RETRY_HANDLER_SERVICE_UNAVAILABLE
300 + " (list of integers): " + serviceUnavailableCodesString);
301 }
302 ServiceUnavailableRetryStrategy serviceUnavailableRetryStrategy = new ResolverServiceUnavailableRetryStrategy(
303 retryCount, retryInterval, retryIntervalMax, serviceUnavailableCodes);
304
305 HttpClientBuilder builder = HttpClientBuilder.create()
306 .setUserAgent(userAgent)
307 .setDefaultSocketConfig(socketConfig)
308 .setDefaultRequestConfig(requestConfig)
309 .setServiceUnavailableRetryStrategy(serviceUnavailableRetryStrategy)
310 .setRetryHandler(retryHandler)
311 .setDefaultAuthSchemeRegistry(authSchemeRegistry)
312 .setConnectionManager(state.getConnectionManager())
313 .setConnectionManagerShared(true)
314 .setDefaultCredentialsProvider(toCredentialsProvider(server, repoAuthContext, proxy, proxyAuthContext))
315 .setProxy(proxy);
316 final boolean useSystemProperties = ConfigUtils.getBoolean(
317 session, false, USE_SYSTEM_PROPERTIES + "." + repository.getId(), USE_SYSTEM_PROPERTIES);
318 if (useSystemProperties) {
319 LOGGER.warn(
320 "Transport used Apache HttpClient is instructed to use system properties: this may yield in unwanted side-effects!");
321 LOGGER.warn("Please use documented means to configure resolver transport.");
322 builder.useSystemProperties();
323 }
324
325 final boolean expectContinue = ConfigUtils.getBoolean(
326 session,
327 ConfigurationProperties.DEFAULT_HTTP_EXPECT_CONTINUE,
328 ConfigurationProperties.HTTP_EXPECT_CONTINUE + "." + repository.getId(),
329 ConfigurationProperties.HTTP_EXPECT_CONTINUE);
330 if (expectContinue != ConfigurationProperties.DEFAULT_HTTP_EXPECT_CONTINUE) {
331 state.setExpectContinue(expectContinue);
332 }
333
334 final boolean reuseConnections = ConfigUtils.getBoolean(
335 session,
336 ConfigurationProperties.DEFAULT_HTTP_REUSE_CONNECTIONS,
337 ConfigurationProperties.HTTP_REUSE_CONNECTIONS + "." + repository.getId(),
338 ConfigurationProperties.HTTP_REUSE_CONNECTIONS);
339 if (!reuseConnections) {
340 builder.setConnectionReuseStrategy(NoConnectionReuseStrategy.INSTANCE);
341 }
342
343 this.client = builder.build();
344 }
345
346
347
348
349 private InetAddress getHttpLocalAddress(RepositorySystemSession session, RemoteRepository repository) {
350 String bindAddress = ConfigUtils.getString(
351 session,
352 null,
353 ConfigurationProperties.HTTP_LOCAL_ADDRESS + "." + repository.getId(),
354 ConfigurationProperties.HTTP_LOCAL_ADDRESS);
355 if (bindAddress == null) {
356 return null;
357 }
358 try {
359 return InetAddress.getByName(bindAddress);
360 } catch (UnknownHostException uhe) {
361 throw new IllegalArgumentException(
362 "Given bind address (" + bindAddress + ") cannot be resolved for remote repository " + repository,
363 uhe);
364 }
365 }
366
367 private static HttpHost toHost(Proxy proxy) {
368 HttpHost host = null;
369 if (proxy != null) {
370 host = new HttpHost(proxy.getHost(), proxy.getPort());
371 }
372 return host;
373 }
374
375 private static CredentialsProvider toCredentialsProvider(
376 HttpHost server, AuthenticationContext serverAuthCtx, HttpHost proxy, AuthenticationContext proxyAuthCtx) {
377 CredentialsProvider provider = toCredentialsProvider(server.getHostName(), AuthScope.ANY_PORT, serverAuthCtx);
378 if (proxy != null) {
379 CredentialsProvider p = toCredentialsProvider(proxy.getHostName(), proxy.getPort(), proxyAuthCtx);
380 provider = new DemuxCredentialsProvider(provider, p, proxy);
381 }
382 return provider;
383 }
384
385 private static CredentialsProvider toCredentialsProvider(String host, int port, AuthenticationContext ctx) {
386 DeferredCredentialsProvider provider = new DeferredCredentialsProvider();
387 if (ctx != null) {
388 AuthScope basicScope = new AuthScope(host, port);
389 provider.setCredentials(basicScope, new DeferredCredentialsProvider.BasicFactory(ctx));
390
391 AuthScope ntlmScope = new AuthScope(host, port, AuthScope.ANY_REALM, "ntlm");
392 provider.setCredentials(ntlmScope, new DeferredCredentialsProvider.NtlmFactory(ctx));
393 }
394 return provider;
395 }
396
397 LocalState getState() {
398 return state;
399 }
400
401 private URI resolve(TransportTask task) {
402 return UriUtils.resolve(baseUri, task.getLocation());
403 }
404
405 @Override
406 public int classify(Throwable error) {
407 if (error instanceof HttpResponseException
408 && ((HttpResponseException) error).getStatusCode() == HttpStatus.SC_NOT_FOUND) {
409 return ERROR_NOT_FOUND;
410 }
411 return ERROR_OTHER;
412 }
413
414 @Override
415 protected void implPeek(PeekTask task) throws Exception {
416 HttpHead request = commonHeaders(new HttpHead(resolve(task)));
417 execute(request, null);
418 }
419
420 @Override
421 protected void implGet(GetTask task) throws Exception {
422 boolean resume = true;
423 boolean applyChecksumExtractors = true;
424
425 EntityGetter getter = new EntityGetter(task);
426 HttpGet request = commonHeaders(new HttpGet(resolve(task)));
427 while (true) {
428 try {
429 if (resume) {
430 resume(request, task);
431 }
432 if (applyChecksumExtractors) {
433 for (ChecksumExtractor checksumExtractor : checksumExtractors.values()) {
434 checksumExtractor.prepareRequest(request);
435 }
436 }
437 execute(request, getter);
438 break;
439 } catch (HttpResponseException e) {
440 if (resume
441 && e.getStatusCode() == HttpStatus.SC_PRECONDITION_FAILED
442 && request.containsHeader(HttpHeaders.RANGE)) {
443 request = commonHeaders(new HttpGet(resolve(task)));
444 resume = false;
445 continue;
446 }
447 if (applyChecksumExtractors) {
448 boolean retryWithoutExtractors = false;
449 for (ChecksumExtractor checksumExtractor : checksumExtractors.values()) {
450 if (checksumExtractor.retryWithoutExtractor(e)) {
451 retryWithoutExtractors = true;
452 break;
453 }
454 }
455 if (retryWithoutExtractors) {
456 request = commonHeaders(new HttpGet(resolve(task)));
457 applyChecksumExtractors = false;
458 continue;
459 }
460 }
461 throw e;
462 }
463 }
464 }
465
466 @Override
467 protected void implPut(PutTask task) throws Exception {
468 PutTaskEntity entity = new PutTaskEntity(task);
469 HttpPut request = commonHeaders(entity(new HttpPut(resolve(task)), entity));
470 try {
471 execute(request, null);
472 } catch (HttpResponseException e) {
473 if (e.getStatusCode() == HttpStatus.SC_EXPECTATION_FAILED && request.containsHeader(HttpHeaders.EXPECT)) {
474 state.setExpectContinue(false);
475 request = commonHeaders(entity(new HttpPut(request.getURI()), entity));
476 execute(request, null);
477 return;
478 }
479 throw e;
480 }
481 }
482
483 private void execute(HttpUriRequest request, EntityGetter getter) throws Exception {
484 try {
485 SharingHttpContext context = new SharingHttpContext(state);
486 prepare(request, context);
487 try (CloseableHttpResponse response = client.execute(server, request, context)) {
488 try {
489 context.close();
490 handleStatus(response);
491 if (getter != null) {
492 getter.handle(response);
493 }
494 } finally {
495 EntityUtils.consumeQuietly(response.getEntity());
496 }
497 }
498 } catch (IOException e) {
499 if (e.getCause() instanceof TransferCancelledException) {
500 throw (Exception) e.getCause();
501 }
502 throw e;
503 }
504 }
505
506 private void prepare(HttpUriRequest request, SharingHttpContext context) {
507 final boolean put = HttpPut.METHOD_NAME.equalsIgnoreCase(request.getMethod());
508 if (preemptiveAuth || (preemptivePutAuth && put)) {
509 context.getAuthCache().put(server, new BasicScheme());
510 }
511 if (supportWebDav) {
512 if (state.getWebDav() == null && (put || isPayloadPresent(request))) {
513 HttpOptions req = commonHeaders(new HttpOptions(request.getURI()));
514 try (CloseableHttpResponse response = client.execute(server, req, context)) {
515 state.setWebDav(response.containsHeader(HttpHeaders.DAV));
516 EntityUtils.consumeQuietly(response.getEntity());
517 } catch (IOException e) {
518 LOGGER.debug("Failed to prepare HTTP context", e);
519 }
520 }
521 if (put && Boolean.TRUE.equals(state.getWebDav())) {
522 mkdirs(request.getURI(), context);
523 }
524 }
525 }
526
527 @SuppressWarnings("checkstyle:magicnumber")
528 private void mkdirs(URI uri, SharingHttpContext context) {
529 List<URI> dirs = UriUtils.getDirectories(baseUri, uri);
530 int index = 0;
531 for (; index < dirs.size(); index++) {
532 try (CloseableHttpResponse response =
533 client.execute(server, commonHeaders(new HttpMkCol(dirs.get(index))), context)) {
534 try {
535 int status = response.getStatusLine().getStatusCode();
536 if (status < 300 || status == HttpStatus.SC_METHOD_NOT_ALLOWED) {
537 break;
538 } else if (status == HttpStatus.SC_CONFLICT) {
539 continue;
540 }
541 handleStatus(response);
542 } finally {
543 EntityUtils.consumeQuietly(response.getEntity());
544 }
545 } catch (IOException e) {
546 LOGGER.debug("Failed to create parent directory {}", dirs.get(index), e);
547 return;
548 }
549 }
550 for (index--; index >= 0; index--) {
551 try (CloseableHttpResponse response =
552 client.execute(server, commonHeaders(new HttpMkCol(dirs.get(index))), context)) {
553 try {
554 handleStatus(response);
555 } finally {
556 EntityUtils.consumeQuietly(response.getEntity());
557 }
558 } catch (IOException e) {
559 LOGGER.debug("Failed to create parent directory {}", dirs.get(index), e);
560 return;
561 }
562 }
563 }
564
565 private <T extends HttpEntityEnclosingRequest> T entity(T request, HttpEntity entity) {
566 request.setEntity(entity);
567 return request;
568 }
569
570 private boolean isPayloadPresent(HttpUriRequest request) {
571 if (request instanceof HttpEntityEnclosingRequest) {
572 HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity();
573 return entity != null && entity.getContentLength() != 0;
574 }
575 return false;
576 }
577
578 private <T extends HttpUriRequest> T commonHeaders(T request) {
579 request.setHeader(HttpHeaders.CACHE_CONTROL, "no-cache, no-store");
580 request.setHeader(HttpHeaders.PRAGMA, "no-cache");
581
582 if (state.isExpectContinue() && isPayloadPresent(request)) {
583 request.setHeader(HttpHeaders.EXPECT, "100-continue");
584 }
585
586 for (Map.Entry<?, ?> entry : headers.entrySet()) {
587 if (!(entry.getKey() instanceof String)) {
588 continue;
589 }
590 if (entry.getValue() instanceof String) {
591 request.setHeader(entry.getKey().toString(), entry.getValue().toString());
592 } else {
593 request.removeHeaders(entry.getKey().toString());
594 }
595 }
596
597 if (!state.isExpectContinue()) {
598 request.removeHeaders(HttpHeaders.EXPECT);
599 }
600
601 return request;
602 }
603
604 @SuppressWarnings("checkstyle:magicnumber")
605 private <T extends HttpUriRequest> void resume(T request, GetTask task) {
606 long resumeOffset = task.getResumeOffset();
607 if (resumeOffset > 0L && task.getDataFile() != null) {
608 request.setHeader(HttpHeaders.RANGE, "bytes=" + resumeOffset + '-');
609 request.setHeader(
610 HttpHeaders.IF_UNMODIFIED_SINCE,
611 DateUtils.formatDate(new Date(task.getDataFile().lastModified() - 60L * 1000L)));
612 request.setHeader(HttpHeaders.ACCEPT_ENCODING, "identity");
613 }
614 }
615
616 @SuppressWarnings("checkstyle:magicnumber")
617 private void handleStatus(CloseableHttpResponse response) throws HttpResponseException {
618 int status = response.getStatusLine().getStatusCode();
619 if (status >= 300) {
620 throw new HttpResponseException(status, response.getStatusLine().getReasonPhrase() + " (" + status + ")");
621 }
622 }
623
624 @Override
625 protected void implClose() {
626 try {
627 client.close();
628 } catch (IOException e) {
629 throw new UncheckedIOException(e);
630 }
631 AuthenticationContext.close(repoAuthContext);
632 AuthenticationContext.close(proxyAuthContext);
633 state.close();
634 }
635
636 private class EntityGetter {
637
638 private final GetTask task;
639
640 EntityGetter(GetTask task) {
641 this.task = task;
642 }
643
644 public void handle(CloseableHttpResponse response) throws IOException, TransferCancelledException {
645 HttpEntity entity = response.getEntity();
646 if (entity == null) {
647 entity = new ByteArrayEntity(new byte[0]);
648 }
649
650 long offset = 0L, length = entity.getContentLength();
651 Header rangeHeader = response.getFirstHeader(HttpHeaders.CONTENT_RANGE);
652 String range = rangeHeader != null ? rangeHeader.getValue() : null;
653 if (range != null) {
654 Matcher m = CONTENT_RANGE_PATTERN.matcher(range);
655 if (!m.matches()) {
656 throw new IOException("Invalid Content-Range header for partial download: " + range);
657 }
658 offset = Long.parseLong(m.group(1));
659 length = Long.parseLong(m.group(2)) + 1L;
660 if (offset < 0L || offset >= length || (offset > 0L && offset != task.getResumeOffset())) {
661 throw new IOException("Invalid Content-Range header for partial download from offset "
662 + task.getResumeOffset() + ": " + range);
663 }
664 }
665
666 final boolean resume = offset > 0L;
667 final File dataFile = task.getDataFile();
668 if (dataFile == null) {
669 try (InputStream is = entity.getContent()) {
670 utilGet(task, is, true, length, resume);
671 extractChecksums(response);
672 }
673 } else {
674 try (FileUtils.CollocatedTempFile tempFile = FileUtils.newTempFile(dataFile.toPath())) {
675 task.setDataFile(tempFile.getPath().toFile(), resume);
676 if (resume && Files.isRegularFile(dataFile.toPath())) {
677 try (InputStream inputStream = Files.newInputStream(dataFile.toPath())) {
678 Files.copy(inputStream, tempFile.getPath(), StandardCopyOption.REPLACE_EXISTING);
679 }
680 }
681 try (InputStream is = entity.getContent()) {
682 utilGet(task, is, true, length, resume);
683 }
684 tempFile.move();
685 } finally {
686 task.setDataFile(dataFile);
687 }
688 }
689 if (task.getDataFile() != null) {
690 Header lastModifiedHeader =
691 response.getFirstHeader(HttpHeaders.LAST_MODIFIED);
692 if (lastModifiedHeader != null) {
693 Date lastModified = DateUtils.parseDate(lastModifiedHeader.getValue());
694 if (lastModified != null) {
695 Files.setLastModifiedTime(
696 task.getDataFile().toPath(), FileTime.fromMillis(lastModified.getTime()));
697 }
698 }
699 }
700 extractChecksums(response);
701 }
702
703 private void extractChecksums(CloseableHttpResponse response) {
704 for (Map.Entry<String, ChecksumExtractor> extractorEntry : checksumExtractors.entrySet()) {
705 Map<String, String> checksums = extractorEntry.getValue().extractChecksums(response);
706 if (checksums != null) {
707 checksums.forEach(task::setChecksum);
708 return;
709 }
710 }
711 }
712 }
713
714 private class PutTaskEntity extends AbstractHttpEntity {
715
716 private final PutTask task;
717
718 PutTaskEntity(PutTask task) {
719 this.task = task;
720 }
721
722 @Override
723 public boolean isRepeatable() {
724 return true;
725 }
726
727 @Override
728 public boolean isStreaming() {
729 return false;
730 }
731
732 @Override
733 public long getContentLength() {
734 return task.getDataLength();
735 }
736
737 @Override
738 public InputStream getContent() throws IOException {
739 return task.newInputStream();
740 }
741
742 @Override
743 public void writeTo(OutputStream os) throws IOException {
744 try {
745 utilPut(task, os, false);
746 } catch (TransferCancelledException e) {
747 throw (IOException) new InterruptedIOException().initCause(e);
748 }
749 }
750 }
751
752 private static class ResolverServiceUnavailableRetryStrategy implements ServiceUnavailableRetryStrategy {
753 private final int retryCount;
754
755 private final long retryInterval;
756
757 private final long retryIntervalMax;
758
759 private final Set<Integer> serviceUnavailableHttpCodes;
760
761
762
763
764
765
766 private static final ThreadLocal<Long> RETRY_INTERVAL_HOLDER = new ThreadLocal<>();
767
768 private ResolverServiceUnavailableRetryStrategy(
769 int retryCount, long retryInterval, long retryIntervalMax, Set<Integer> serviceUnavailableHttpCodes) {
770 if (retryCount < 0) {
771 throw new IllegalArgumentException("retryCount must be >= 0");
772 }
773 if (retryInterval < 0L) {
774 throw new IllegalArgumentException("retryInterval must be >= 0");
775 }
776 if (retryIntervalMax < 0L) {
777 throw new IllegalArgumentException("retryIntervalMax must be >= 0");
778 }
779 this.retryCount = retryCount;
780 this.retryInterval = retryInterval;
781 this.retryIntervalMax = retryIntervalMax;
782 this.serviceUnavailableHttpCodes = requireNonNull(serviceUnavailableHttpCodes);
783 }
784
785 @Override
786 public boolean retryRequest(HttpResponse response, int executionCount, HttpContext context) {
787 final boolean retry = executionCount <= retryCount
788 && (serviceUnavailableHttpCodes.contains(
789 response.getStatusLine().getStatusCode()));
790 if (retry) {
791 Long retryInterval = retryInterval(response, executionCount, context);
792 if (retryInterval != null) {
793 RETRY_INTERVAL_HOLDER.set(retryInterval);
794 return true;
795 }
796 }
797 RETRY_INTERVAL_HOLDER.remove();
798 return false;
799 }
800
801
802
803
804
805
806
807
808 private Long retryInterval(HttpResponse httpResponse, int executionCount, HttpContext httpContext) {
809 Long result = null;
810 Header header = httpResponse.getFirstHeader(HttpHeaders.RETRY_AFTER);
811 if (header != null && header.getValue() != null) {
812 String headerValue = header.getValue();
813 if (headerValue.contains(":")) {
814 Date when = DateUtils.parseDate(headerValue);
815 if (when != null) {
816 result = Math.max(when.getTime() - System.currentTimeMillis(), 0L);
817 }
818 } else {
819 try {
820 result = Long.parseLong(headerValue) * 1000L;
821 } catch (NumberFormatException e) {
822
823 }
824 }
825 }
826 if (result == null) {
827 result = executionCount * this.retryInterval;
828 }
829 if (result > retryIntervalMax) {
830 return null;
831 }
832 return result;
833 }
834
835 @Override
836 public long getRetryInterval() {
837 Long ri = RETRY_INTERVAL_HOLDER.get();
838 if (ri == null) {
839 return 0L;
840 }
841 RETRY_INTERVAL_HOLDER.remove();
842 return ri;
843 }
844 }
845 }