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1 package de.mpiwg.itgroup.annotations.restlet;
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2
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3 import java.io.File;
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4 import java.io.FileInputStream;
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5 import java.io.FileNotFoundException;
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6 import java.io.IOException;
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7 import java.io.InputStream;
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8 import java.util.Hashtable;
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9 import java.util.Properties;
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10
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11 import javax.naming.NamingEnumeration;
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12 import javax.naming.NamingException;
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13 import javax.naming.directory.Attribute;
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14 import javax.naming.directory.DirContext;
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15 import javax.naming.directory.InitialDirContext;
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16 import javax.naming.directory.SearchControls;
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17 import javax.naming.directory.SearchResult;
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18 import javax.servlet.ServletContext;
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19
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20 import org.apache.log4j.BasicConfigurator;
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21 import org.apache.log4j.Logger;
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3
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22 import org.neo4j.graphdb.GraphDatabaseService;
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23 import org.neo4j.graphdb.factory.GraphDatabaseFactory;
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24 import org.neo4j.kernel.AbstractGraphDatabase;
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25 import org.neo4j.server.WrappingNeoServerBootstrapper;
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26 import org.restlet.Application;
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27 import org.restlet.Context;
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28 import org.restlet.Restlet;
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29 import org.restlet.routing.Router;
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30 import org.restlet.security.ChallengeAuthenticator;
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31
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32 import scala.sys.process.ProcessBuilderImpl.Dummy;
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33
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34 public class RestServer extends Application {
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35
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36 public static Logger logger = Logger.getRootLogger();
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37
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38 private ChallengeAuthenticator authenticator;
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39
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40 /**
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41 * Properties holding consumer keys and secrets
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42 */
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43 private Properties consumerKeys;
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44 public String CONSUMER_KEYS_PATH = "WEB-INF/consumerkeys.property";
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45
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46 private GraphDatabaseService graphDb;
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47 public static final String GRAPHDB_KEY = "annotationmanager.graphdb";
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48 public String DB_PATH = "WEB-INF/neo4j-annotation-db";
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49
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50 /**
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51 * constructor
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52 *
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53 * @param parentContext
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54 */
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55 public RestServer(Context parentContext) {
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56 super(parentContext);
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57 // TODO: is this the right place to run the log4j configurator?
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58 BasicConfigurator.configure();
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59
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60 ServletContext sc = (ServletContext) getContext().getServerDispatcher().getContext().getAttributes()
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61 .get("org.restlet.ext.servlet.ServletContext");
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62 if (sc != null) {
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63 // look for database service in context
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64 graphDb = (GraphDatabaseService) sc.getAttribute(GRAPHDB_KEY);
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65 if (graphDb == null) {
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66 /*
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67 * open database
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68 */
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69 String dbFn = getResourcePath(sc, DB_PATH);
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70 if (dbFn != null) {
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71 logger.debug("opening DB " + dbFn);
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72 graphDb = new GraphDatabaseFactory().newEmbeddedDatabase(dbFn);
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73 // store in context
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74 sc.setAttribute(GRAPHDB_KEY, graphDb);
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75 WrappingNeoServerBootstrapper srv = new WrappingNeoServerBootstrapper((AbstractGraphDatabase) graphDb);
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76 logger.debug("Starting DB admin server...");
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77 srv.start();
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78 } else {
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79 logger.error("Unable to get resource " + DB_PATH);
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80 }
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81 }
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82 /*
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83 * read consumerKeys from webapp
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84 */
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85 consumerKeys = new Properties();
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86 InputStream ps = getResourceAsStream(sc, CONSUMER_KEYS_PATH);
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87 if (ps != null) {
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88 logger.debug("loading consumer keys from " + CONSUMER_KEYS_PATH);
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89 try {
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90 consumerKeys.load(ps);
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91 } catch (IOException e) {
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92 // TODO Auto-generated catch block
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93 e.printStackTrace();
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94 }
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95 logger.debug("consumer keys: " + consumerKeys);
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96 } else {
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97 logger.error("Unable to get resource " + CONSUMER_KEYS_PATH);
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98 }
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99 } else {
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100 logger.error("Unable to get ServletContext!");
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101 }
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102
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103 }
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104
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105 /**
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106 * returns consumer secret for consumer key. returns null if consumer key
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107 * doesn't exist.
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108 *
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109 * @param consumerKey
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110 * @return
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111 */
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112 public String getConsumerSecret(String consumerKey) {
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113 return consumerKeys.getProperty(consumerKey);
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114 }
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115
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116 /*
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117 * (non-Javadoc)
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118 *
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119 * @see org.restlet.Application#createInboundRoot()
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120 */
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121 @Override
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122 public Restlet createInboundRoot() {
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123 // this.authenticator = createAuthenticator();
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124
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125 Router router = new Router(getContext());
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126
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127 router.attach("/annotator/annotations", AnnotatorAnnotations.class);
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128 router.attach("/annotator/annotations/{id}", AnnotatorAnnotations.class);
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129 // router.attach("/annotator/search", AnnotatorSearch.class);
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130
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131 // router.attach("",redirector); router.attach("/annotator",
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132 // ExtendedAnnotationInput.class);
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133
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134 router.attach("/", AnnotatorInfo.class);
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135 // authenticator.setNext(router);
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136 // return authenticator;
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137
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138 return router;
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139 }
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140
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141 /**
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142 * Hole den vollen Benutzernamen aus dem LDAP
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143 *
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144 * @param creator
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145 * @return
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146 */
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147 public String getUserNameFromLdap(String creator) {
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148 String retString = creator; // falls nichts gefunden wird einfach den
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149 // creator zurueckgeben
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150 Hashtable<String, String> env = new Hashtable<String, String>();
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151 String sp = "com.sun.jndi.ldap.LdapCtxFactory";
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152 env.put(javax.naming.Context.INITIAL_CONTEXT_FACTORY, sp);
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153
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154 // TODO: should go into config file
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155 String ldapUrl = "ldap://ldapreplik.mpiwg-berlin.mpg.de/dc=mpiwg-berlin,dc=mpg,dc=de";
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156 env.put(javax.naming.Context.PROVIDER_URL, ldapUrl);
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157
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158 DirContext dctx;
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159 try {
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160 dctx = new InitialDirContext(env);
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161 } catch (NamingException e1) {
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162 // TODO Auto-generated catch block
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163 e1.printStackTrace();
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164 return retString;
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165 }
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166
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167 String base = "ou=People";
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168
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169 SearchControls sc = new SearchControls();
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170 String[] attributeFilter = { "cn", "mail" };
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171 sc.setReturningAttributes(attributeFilter);
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172 sc.setSearchScope(SearchControls.SUBTREE_SCOPE);
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173
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174 String filter = "(uid=" + creator + ")";
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175
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176 try {
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177 NamingEnumeration<SearchResult> results = dctx.search(base, filter, sc);
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178 while (results.hasMore()) {
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179 SearchResult sr = (SearchResult) results.next();
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180 javax.naming.directory.Attributes attrs = sr.getAttributes();
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181
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182 Attribute attr = attrs.get("cn");
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183 retString = (String) attr.get();
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184 }
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185 } catch (NamingException e) {
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186 // TODO Auto-generated catch block
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187 e.printStackTrace();
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188 }
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189
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190 try {
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191 dctx.close();
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192 } catch (NamingException e) {
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193 // TODO Auto-generated catch block
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194 e.printStackTrace();
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195 }
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196 return retString;
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197 }
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198
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199 /**
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200 * returns resource from path (in webapp) as InputStream.
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201 *
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202 * @param sc
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203 * @param path
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204 * @return
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205 */
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206 protected InputStream getResourceAsStream(ServletContext sc, String path) {
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207 InputStream ps = sc.getResourceAsStream(path);
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208 if (ps == null) {
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209 // try as file
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210 File pf = new File(sc.getRealPath(path));
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211 if (pf != null) {
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212 logger.debug("trying file for: " + pf);
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213 try {
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214 ps = new FileInputStream(pf);
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215 } catch (FileNotFoundException e) {
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216 logger.error(e);
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217 }
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218 }
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219 }
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220 return ps;
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221 }
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222
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223 /**
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224 * get a real file name for a web app file pathname.
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225 *
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226 * If filename starts with "/" its treated as absolute else the path is
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227 * appended to the base directory of the web-app.
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228 *
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229 * @param filename
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230 * @param sc
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231 * @return
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232 */
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233 public static String getResourcePath(ServletContext sc, String filename) {
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234 File f = new File(filename);
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235 // is the filename absolute?
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236 if (!f.isAbsolute()) {
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237 // relative path -> use getRealPath to resolve in webapp
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238 filename = sc.getRealPath(filename);
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239 }
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240 return filename;
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241 }
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242
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243 }
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