lewismc commented on code in PR #826: URL: https://github.com/apache/nutch/pull/826#discussion_r1799918553
########## src/plugin/protocol-smb/src/java/org/apache/nutch/protocol/smb/Smb.java: ########## @@ -0,0 +1,292 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +package org.apache.nutch.protocol.smb; + +import java.io.IOException; +import java.io.InputStream; +import java.io.UnsupportedEncodingException; +import java.net.MalformedURLException; +import java.net.URI; +import java.net.URL; +import java.nio.charset.StandardCharsets; +import java.util.Arrays; +import java.util.EnumSet; +import java.util.HashSet; +import java.util.List; +import java.util.Set; +import java.util.TreeSet; + +import org.apache.commons.io.IOUtils; +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.io.Text; +import org.apache.nutch.crawl.CrawlDatum; +import org.apache.nutch.metadata.Metadata; +import org.apache.nutch.net.protocols.HttpDateFormat; +import org.apache.nutch.protocol.Content; +import org.apache.nutch.protocol.Protocol; +import org.apache.nutch.protocol.ProtocolOutput; +import org.apache.nutch.protocol.ProtocolStatus; +import org.apache.nutch.protocol.RobotRulesParser; +import com.hierynomus.msdtyp.AccessMask; +import com.hierynomus.msfscc.FileAttributes; +import com.hierynomus.msfscc.fileinformation.FileAllInformation; +import com.hierynomus.msfscc.fileinformation.FileIdBothDirectoryInformation; +import com.hierynomus.mssmb2.SMB2CreateDisposition; +import com.hierynomus.mssmb2.SMB2CreateOptions; +import com.hierynomus.mssmb2.SMB2ShareAccess; +import com.hierynomus.smbj.auth.AuthenticationContext; +import com.hierynomus.smbj.connection.Connection; +import com.hierynomus.smbj.session.Session; +import com.hierynomus.smbj.share.DiskShare; +import com.hierynomus.smbj.share.File; +import com.hierynomus.smbj.SMBClient; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import crawlercommons.robots.BaseRobotRules; + +public class Smb implements Protocol { + protected static final Logger LOG = LoggerFactory.getLogger(Smb.class); + + private Configuration conf; + + private String user; + private String password; + private String domain; + private int contentLimit; + private Set<String> ignoreFiles; + + public Smb() { + // todo: files that should be skipped could be configurable. + this.ignoreFiles = new HashSet<>(); + ignoreFiles.add("."); + ignoreFiles.add(".."); + ignoreFiles.add(".svn"); + ignoreFiles.add(".git"); + } + + @Override + public Configuration getConf() { + LOG.debug("getConf()"); + return this.conf; + } + + @Override + public void setConf(Configuration conf) { + this.conf = conf; + + // todo: is it possible to use configuration "per server" or "per share"? + user = conf.getTrimmed("smb.user"); + if (user == null || user.isEmpty()) { + throw new IllegalArgumentException("Config parameter 'smb.user' not set."); + } + password = conf.getTrimmed("smb.password"); + if (password == null || password.isEmpty()) { + throw new IllegalArgumentException("Config parameter 'smb.password' not set."); + } + domain = conf.getTrimmed("smb.domain"); + contentLimit = conf.getInt("smb.content.limit", Integer.MAX_VALUE); + } + + /** + * list directory. + * + * @return some HTML string + */ + private String getDirectoryContent(DiskShare share, String shareName, String path) throws UnsupportedEncodingException { + StringBuffer sb = new StringBuffer(); + sb.append("<html><head>"); + sb.append("<title>Index of ").append("/").append(shareName).append(path).append("</title>"); + sb.append("</head><body>"); + sb.append("<h1>Index of ").append("/").append(shareName).append(path).append("</h1>"); + sb.append("<pre>"); + for (FileIdBothDirectoryInformation f : share.list(path)) { + if (ignoreFiles.contains(f.getFileName())) { + LOG.warn("File skipped: " + f.getFileName()); + continue; + } + boolean isDir = share.folderExists(path + "/" + f.getFileName()); + + sb.append("<a href=\"").append(java.net.URLEncoder.encode(f.getFileName(), StandardCharsets.UTF_8.name())); + if (isDir) { + sb.append("/"); + } + sb.append("\">").append(f.getFileName()); + if (isDir) { + sb.append("/"); + } + sb.append("\t").append(f.getLastWriteTime()).append("</a>\n"); + } + sb.append("</pre>"); + sb.append("</body></html>"); + + return sb.toString(); + } + + private static final char[] HEX_ARRAY = "0123456789ABCDEF".toCharArray(); + + /** + * Get the {@link ProtocolOutput} for a given url and crawldatum. + * + * @param url canonical url + * @param datum associated {@link org.apache.nutch.crawl.CrawlDatum} + * @return the {@link ProtocolOutput} + * @see https://github.com/apache/nutch/blob/master/src/java/org/apache/nutch/crawl/CrawlDatum.java + */ + @Override + public ProtocolOutput getProtocolOutput(Text urlstr, CrawlDatum datum) { + LOG.warn("getProtocolOutput({}, {})", urlstr, datum); + + + + try { + String u = java.net.URLDecoder.decode(urlstr.toString(), StandardCharsets.UTF_8.name()); + u = u.split("://")[1]; + LOG.warn("u={}", u); + String[] components = u.split("[:/]", 2); + String hostname = components[0]; + String shareAndPath = components[1]; + LOG.warn("hostname={}", hostname); + LOG.warn("shareAndPath={}", shareAndPath); + components = shareAndPath.split("/", 2); + String shareName = components[0]; + String path = components.length>1 ? "/" + components[1]: "/"; + LOG.warn("share={}", shareName); + LOG.warn("path={}", path); + + // todo: we construct and destruct the connection for each and every URL. Can connection pools improve? + SMBClient client = new SMBClient(); Review Comment: Yes I think we need to experiment here a bit. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: dev-unsubscr...@nutch.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org
