Configuration.java

   1 /*
   2  * jSite - Configuration.java - Copyright © 2006–2011 David Roden
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17  */
  18
  19 package de.todesbaum.jsite.main;
  20
  21 import java.io.ByteArrayInputStream;
  22 import java.io.ByteArrayOutputStream;
  23 import java.io.File;
  24 import java.io.FileInputStream;
  25 import java.io.FileNotFoundException;
  26 import java.io.FileOutputStream;
  27 import java.io.IOException;
  28 import java.util.ArrayList;
  29 import java.util.HashMap;
  30 import java.util.Iterator;
  31 import java.util.List;
  32 import java.util.Locale;
  33 import java.util.Map;
  34 import java.util.Map.Entry;
  35 import java.util.logging.Level;
  36 import java.util.logging.Logger;
  37
  38 import de.todesbaum.jsite.application.FileOption;
  39 import de.todesbaum.jsite.application.Node;
  40 import de.todesbaum.jsite.application.Project;
  41 import de.todesbaum.jsite.main.ConfigurationLocator.ConfigurationLocation;
  42 import de.todesbaum.util.io.Closer;
  43 import de.todesbaum.util.io.StreamCopier;
  44 import de.todesbaum.util.xml.SimpleXML;
  45 import de.todesbaum.util.xml.XML;
  46
  47 /**
  48  * The configuration.
  49  *
  50  * @author David ‘Bombe’ Roden &lt;bombe@freenetproject.org&gt;
  51  */
  52 public class Configuration {
  53
  54         /** The root node of the configuration. */
  55         private SimpleXML rootNode;
  56
  57         /** The configuration locator. */
  58         private final ConfigurationLocator configurationLocator;
  59
  60         /** Where the configuration resides. */
  61         private ConfigurationLocation configurationLocation;
  62
  63         /**
  64          * Creates a new configuration that is read from the given file.
  65          *
  66          * @param configurationLocator
  67          *            The configuration locator
  68          * @param configurationLocation
  69          *            The configuration directory
  70          */
  71         public Configuration(ConfigurationLocator configurationLocator, ConfigurationLocation configurationLocation) {
  72                 this.configurationLocator = configurationLocator;
  73                 this.configurationLocation = configurationLocation;
  74                 readConfiguration(configurationLocator.getFile(configurationLocation));
  75         }
  76
  77         //
  78         // ACCESSORS
  79         //
  80
  81         /**
  82          * Returns the configuration locator.
  83          *
  84          * @return The configuration locator
  85          */
  86         public ConfigurationLocator getConfigurationLocator() {
  87                 return configurationLocator;
  88         }
  89
  90         /**
  91          * Returns the location the configuration will be written to when calling
  92          * {@link #save()}.
  93          *
  94          * @return The location the configuration will be written to
  95          */
  96         public ConfigurationLocation getConfigurationDirectory() {
  97                 return configurationLocation;
  98         }
  99
 100         /**
 101          * Sets the location the configuration will be written to when calling
 102          * {@link #save()}.
 103          *
 104          * @param configurationLocation
 105          *            The location to write the configuration to
 106          */
 107         public void setConfigurationLocation(ConfigurationLocation configurationLocation) {
 108                 this.configurationLocation = configurationLocation;
 109         }
 110
 111         /**
 112          * Reads the configuration from the file.
 113          *
 114          * @param filename
 115          *            The name of the file to read the configuration from
 116          */
 117         private void readConfiguration(String filename) {
 118                 Logger.getLogger(Configuration.class.getName()).log(Level.CONFIG, "Reading configuration from: " + filename);
 119                 if (filename != null) {
 120                         File configurationFile = new File(filename);
 121                         if (configurationFile.exists()) {
 122                                 ByteArrayOutputStream fileByteOutputStream = null;
 123                                 FileInputStream fileInputStream = null;
 124                                 try {
 125                                         fileByteOutputStream = new ByteArrayOutputStream();
 126                                         fileInputStream = new FileInputStream(configurationFile);
 127                                         StreamCopier.copy(fileInputStream, fileByteOutputStream, configurationFile.length());
 128                                         fileByteOutputStream.close();
 129                                         byte[] fileBytes = fileByteOutputStream.toByteArray();
 130                                         rootNode = SimpleXML.fromDocument(XML.transformToDocument(fileBytes));
 131                                         return;
 132                                 } catch (FileNotFoundException e) {
 133                                         /* ignore. */
 134                                 } catch (IOException e) {
 135                                         /* ignore. */
 136                                 } finally {
 137                                         Closer.close(fileInputStream);
 138                                         Closer.close(fileByteOutputStream);
 139                                 }
 140                         }
 141                 }
 142                 rootNode = new SimpleXML("configuration");
 143         }
 144
 145         /**
 146          * Saves the configuration.
 147          *
 148          * @return <code>true</code> if the configuration could be saved,
 149          *         <code>false</code> otherwise
 150          */
 151         public boolean save() {
 152                 Logger.getLogger(Configuration.class.getName()).log(Level.CONFIG, "Trying to save configuration to: " + configurationLocation);
 153                 File configurationFile = new File(configurationLocator.getFile(configurationLocation));
 154                 if (!configurationFile.exists()) {
 155                         File configurationFilePath = configurationFile.getAbsoluteFile().getParentFile();
 156                         if (!configurationFilePath.exists() && !configurationFilePath.mkdirs()) {
 157                                 return false;
 158                         }
 159                 }
 160                 FileOutputStream fileOutputStream = null;
 161                 ByteArrayInputStream configurationInputStream = null;
 162                 try {
 163                         byte[] configurationBytes = XML.transformToByteArray(rootNode.getDocument());
 164                         configurationInputStream = new ByteArrayInputStream(configurationBytes);
 165                         fileOutputStream = new FileOutputStream(configurationFile);
 166                         StreamCopier.copy(configurationInputStream, fileOutputStream, configurationBytes.length);
 167                         return true;
 168                 } catch (IOException ioe1) {
 169                         /* ignore. */
 170                 } finally {
 171                         Closer.close(configurationInputStream);
 172                         Closer.close(fileOutputStream);
 173                 }
 174                 return false;
 175         }
 176
 177         /**
 178          * Returns the value of a node.
 179          *
 180          * @param nodeNames
 181          *            The name of all nodes in the chain
 182          * @param defaultValue
 183          *            The default value to return if the node could not be found
 184          * @return The value of the node, or the default value if the node could not
 185          *         be found
 186          */
 187         private String getNodeValue(String[] nodeNames, String defaultValue) {
 188                 SimpleXML node = rootNode;
 189                 int nodeIndex = 0;
 190                 while ((node != null) && (nodeIndex < nodeNames.length)) {
 191                         node = node.getNode(nodeNames[nodeIndex++]);
 192                 }
 193                 if (node == null) {
 194                         return defaultValue;
 195                 }
 196                 return node.getValue();
 197         }
 198
 199         /**
 200          * Returns the integer value of a node.
 201          *
 202          * @param nodeNames
 203          *            The names of all nodes in the chain
 204          * @param defaultValue
 205          *            The default value to return if the node can not be found
 206          * @return The parsed integer value, or the default value if the node can
 207          *         not be found or the value can not be parsed into an integer
 208          */
 209         private int getNodeIntValue(String[] nodeNames, int defaultValue) {
 210                 try {
 211                         return Integer.parseInt(getNodeValue(nodeNames, String.valueOf(defaultValue)));
 212                 } catch (NumberFormatException nfe1) {
 213                         /* ignore. */
 214                 }
 215                 return defaultValue;
 216         }
 217
 218         /**
 219          * Returns the boolean value of a node.
 220          *
 221          * @param nodeNames
 222          *            The names of all nodes in the chain
 223          * @param defaultValue
 224          *            The default value to return if the node can not be found
 225          * @return The parsed boolean value, or the default value if the node can
 226          *         not be found
 227          */
 228         private boolean getNodeBooleanValue(String[] nodeNames, boolean defaultValue) {
 229                 String nodeValue = getNodeValue(nodeNames, null);
 230                 if (nodeValue == null) {
 231                         return defaultValue;
 232                 }
 233                 return Boolean.parseBoolean(nodeValue);
 234         }
 235
 236         /**
 237          * Returns the hostname of the node.
 238          *
 239          * @return The hostname of the node
 240          * @deprecated Use {@link #getSelectedNode()} instead
 241          */
 242         @Deprecated
 243         public String getNodeAddress() {
 244                 return getNodeValue(new String[] { "node-address" }, "localhost");
 245         }
 246
 247         /**
 248          * Sets the hostname of the node.
 249          *
 250          * @param nodeAddress
 251          *            The hostname of the node
 252          * @deprecated Use {@link #setSelectedNode(Node)} instead
 253          */
 254         @Deprecated
 255         public void setNodeAddress(String nodeAddress) {
 256                 rootNode.replace("node-address", nodeAddress);
 257         }
 258
 259         /**
 260          * The port number of the node
 261          *
 262          * @return The port number of the node
 263          * @deprecated Use {@link #getSelectedNode()} instead.
 264          */
 265         @Deprecated
 266         public int getNodePort() {
 267                 return getNodeIntValue(new String[] { "node-port" }, 9481);
 268         }
 269
 270         /**
 271          * Sets the port number of the node.
 272          *
 273          * @param nodePort
 274          *            The port number of the node
 275          * @deprecated Use {@link #setSelectedNode(Node)} instead
 276          */
 277         @Deprecated
 278         public void setNodePort(int nodePort) {
 279                 rootNode.replace("node-port", String.valueOf(nodePort));
 280         }
 281
 282         /**
 283          * Returns whether the node configuration page should be skipped on startup.
 284          *
 285          * @return <code>true</code> to skip the node configuration page on startup,
 286          *         <code>false</code> to show it
 287          */
 288         public boolean isSkipNodePage() {
 289                 return getNodeBooleanValue(new String[] { "skip-node-page" }, false);
 290         }
 291
 292         /**
 293          * Sets whether the node configuration page should be skipped on startup.
 294          *
 295          * @param skipNodePage
 296          *            <code>true</code> to skip the node configuration page on
 297          *            startup, <code>false</code> to show it
 298          */
 299         public void setSkipNodePage(boolean skipNodePage) {
 300                 rootNode.replace("skip-node-page", String.valueOf(skipNodePage));
 301         }
 302
 303         /**
 304          * Returns all configured projects.
 305          *
 306          * @return A list of all projects
 307          */
 308         public Project[] getProjects() {
 309                 List<Project> projects = new ArrayList<Project>();
 310                 SimpleXML projectsNode = rootNode.getNode("project-list");
 311                 if (projectsNode != null) {
 312                         SimpleXML[] projectNodes = projectsNode.getNodes("project");
 313                         for (SimpleXML projectNode : projectNodes) {
 314                                 try {
 315                                         Project project = new Project();
 316                                         projects.add(project);
 317                                         project.setDescription(projectNode.getNode("description").getValue(""));
 318                                         String indexFile = projectNode.getNode("index-file").getValue("");
 319                                         if (indexFile.indexOf('/') > -1) {
 320                                                 indexFile = "";
 321                                         }
 322                                         project.setIndexFile(indexFile);
 323                                         project.setLastInsertionTime(Long.parseLong(projectNode.getNode("last-insertion-time").getValue("0")));
 324                                         project.setLocalPath(projectNode.getNode("local-path").getValue(""));
 325                                         project.setName(projectNode.getNode("name").getValue(""));
 326                                         project.setPath(projectNode.getNode("path").getValue(""));
 327                                         if ((project.getPath() != null) && (project.getPath().indexOf("/") != -1)) {
 328                                                 project.setPath(project.getPath().replaceAll("/", ""));
 329                                         }
 330                                         project.setEdition(Integer.parseInt(projectNode.getNode("edition").getValue("0")));
 331                                         project.setInsertURI(projectNode.getNode("insert-uri").getValue(""));
 332                                         project.setRequestURI(projectNode.getNode("request-uri").getValue(""));
 333                                         if (projectNode.getNode("ignore-hidden-files") != null) {
 334                                                 project.setIgnoreHiddenFiles(Boolean.parseBoolean(projectNode.getNode("ignore-hidden-files").getValue("true")));
 335                                         } else {
 336                                                 project.setIgnoreHiddenFiles(true);
 337                                         }
 338                                         SimpleXML fileOptionsNode = projectNode.getNode("file-options");
 339                                         Map<String, FileOption> fileOptions = new HashMap<String, FileOption>();
 340                                         if (fileOptionsNode != null) {
 341                                                 SimpleXML[] fileOptionNodes = fileOptionsNode.getNodes("file-option");
 342                                                 for (SimpleXML fileOptionNode : fileOptionNodes) {
 343                                                         String filename = fileOptionNode.getNode("filename").getValue();
 344                                                         FileOption fileOption = project.getFileOption(filename);
 345                                                         fileOption.setInsert(Boolean.parseBoolean(fileOptionNode.getNode("insert").getValue()));
 346                                                         if (fileOptionNode.getNode("insert-redirect") != null) {
 347                                                                 fileOption.setInsertRedirect(Boolean.parseBoolean(fileOptionNode.getNode("insert-redirect").getValue()));
 348                                                         }
 349                                                         fileOption.setCustomKey(fileOptionNode.getNode("custom-key").getValue(""));
 350                                                         if (fileOptionNode.getNode("changed-name") != null) {
 351                                                                 fileOption.setChangedName(fileOptionNode.getNode("changed-name").getValue());
 352                                                         }
 353                                                         fileOption.setMimeType(fileOptionNode.getNode("mime-type").getValue(""));
 354                                                         fileOptions.put(filename, fileOption);
 355                                                 }
 356                                         }
 357                                         project.setFileOptions(fileOptions);
 358                                 } catch (NumberFormatException nfe1) {
 359                                         nfe1.printStackTrace();
 360                                 }
 361                         }
 362                 }
 363                 return projects.toArray(new Project[projects.size()]);
 364         }
 365
 366         /**
 367          * Sets the list of all projects.
 368          *
 369          * @param projects
 370          *            The list of all projects
 371          */
 372         public void setProjects(Project[] projects) {
 373                 SimpleXML projectsNode = new SimpleXML("project-list");
 374                 for (Project project : projects) {
 375                         SimpleXML projectNode = projectsNode.append("project");
 376                         projectNode.append("edition", String.valueOf(project.getEdition()));
 377                         projectNode.append("description", project.getDescription());
 378                         projectNode.append("index-file", project.getIndexFile());
 379                         projectNode.append("last-insertion-time", String.valueOf(project.getLastInsertionTime()));
 380                         projectNode.append("local-path", project.getLocalPath());
 381                         projectNode.append("name", project.getName());
 382                         projectNode.append("path", project.getPath());
 383                         projectNode.append("insert-uri", project.getInsertURI());
 384                         projectNode.append("request-uri", project.getRequestURI());
 385                         projectNode.append("ignore-hidden-files", String.valueOf(project.isIgnoreHiddenFiles()));
 386                         SimpleXML fileOptionsNode = projectNode.append("file-options");
 387                         Iterator<Entry<String, FileOption>> entries = project.getFileOptions().entrySet().iterator();
 388                         while (entries.hasNext()) {
 389                                 Entry<String, FileOption> entry = entries.next();
 390                                 FileOption fileOption = entry.getValue();
 391                                 if (fileOption.isCustom()) {
 392                                         SimpleXML fileOptionNode = fileOptionsNode.append("file-option");
 393                                         fileOptionNode.append("filename", entry.getKey());
 394                                         fileOptionNode.append("insert", String.valueOf(fileOption.isInsert()));
 395                                         fileOptionNode.append("insert-redirect", String.valueOf(fileOption.isInsertRedirect()));
 396                                         fileOptionNode.append("custom-key", fileOption.getCustomKey());
 397                                         fileOptionNode.append("changed-name", fileOption.getChangedName());
 398                                         fileOptionNode.append("mime-type", fileOption.getMimeType());
 399                                 }
 400                         }
 401                 }
 402                 rootNode.replace(projectsNode);
 403         }
 404
 405         /**
 406          * Returns the stored locale.
 407          *
 408          * @return The stored locale
 409          */
 410         public Locale getLocale() {
 411                 String language = getNodeValue(new String[] { "i18n", "language" }, "en");
 412                 String country = getNodeValue(new String[] { "i18n", "country" }, null);
 413                 if (country != null) {
 414                         return new Locale(language, country);
 415                 }
 416                 return new Locale(language);
 417         }
 418
 419         /**
 420          * Sets the locale to store.
 421          *
 422          * @param locale
 423          *            The locale to store
 424          */
 425         public void setLocale(Locale locale) {
 426                 SimpleXML i18nNode = new SimpleXML("i18n");
 427                 if (locale.getCountry().length() != 0) {
 428                         i18nNode.append("country", locale.getCountry());
 429                 }
 430                 i18nNode.append("language", locale.getLanguage());
 431                 rootNode.replace(i18nNode);
 432                 return;
 433         }
 434
 435         /**
 436          * Returns a list of configured nodes.
 437          *
 438          * @return The list of the configured nodes
 439          */
 440         public Node[] getNodes() {
 441                 SimpleXML nodesNode = rootNode.getNode("nodes");
 442                 if (nodesNode == null) {
 443                         String hostname = getNodeAddress();
 444                         int port = getNodePort();
 445                         if (hostname == null) {
 446                                 hostname = "127.0.0.1";
 447                                 port = 9481;
 448                         }
 449                         return new Node[] { new Node(hostname, port, "Node") };
 450                 }
 451                 SimpleXML[] nodeNodes = nodesNode.getNodes("node");
 452                 Node[] returnNodes = new Node[nodeNodes.length];
 453                 int nodeIndex = 0;
 454                 for (SimpleXML nodeNode : nodeNodes) {
 455                         String name = nodeNode.getNode("name").getValue();
 456                         String hostname = nodeNode.getNode("hostname").getValue();
 457                         int port = Integer.parseInt(nodeNode.getNode("port").getValue());
 458                         Node node = new Node(hostname, port, name);
 459                         returnNodes[nodeIndex++] = node;
 460                 }
 461                 return returnNodes;
 462         }
 463
 464         /**
 465          * Sets the list of configured nodes.
 466          *
 467          * @param nodes
 468          *            The list of configured nodes
 469          */
 470         public void setNodes(Node[] nodes) {
 471                 SimpleXML nodesNode = new SimpleXML("nodes");
 472                 for (Node node : nodes) {
 473                         SimpleXML nodeNode = nodesNode.append("node");
 474                         nodeNode.append("name", node.getName());
 475                         nodeNode.append("hostname", node.getHostname());
 476                         nodeNode.append("port", String.valueOf(node.getPort()));
 477                 }
 478                 rootNode.replace(nodesNode);
 479                 rootNode.remove("node-address");
 480                 rootNode.remove("node-port");
 481         }
 482
 483         /**
 484          * Sets the selected node.
 485          *
 486          * @param selectedNode
 487          *            The selected node
 488          */
 489         public void setSelectedNode(Node selectedNode) {
 490                 SimpleXML selectedNodeNode = new SimpleXML("selected-node");
 491                 selectedNodeNode.append("name", selectedNode.getName());
 492                 selectedNodeNode.append("hostname", selectedNode.getHostname());
 493                 selectedNodeNode.append("port", String.valueOf(selectedNode.getPort()));
 494                 rootNode.replace(selectedNodeNode);
 495         }
 496
 497         /**
 498          * Returns the selected node.
 499          *
 500          * @return The selected node
 501          */
 502         public Node getSelectedNode() {
 503                 SimpleXML selectedNodeNode = rootNode.getNode("selected-node");
 504                 if (selectedNodeNode == null) {
 505                         String hostname = getNodeAddress();
 506                         int port = getNodePort();
 507                         if (hostname == null) {
 508                                 hostname = "127.0.0.1";
 509                                 port = 9481;
 510                         }
 511                         return new Node(hostname, port, "Node");
 512                 }
 513                 String name = selectedNodeNode.getNode("name").getValue();
 514                 String hostname = selectedNodeNode.getNode("hostname").getValue();
 515                 int port = Integer.valueOf(selectedNodeNode.getNode("port").getValue());
 516                 return new Node(hostname, port, name);
 517         }
 518
 519         /**
 520          * Returns the temp directory to use.
 521          *
 522          * @return The temp directoy, or {@code null} to use the default temp
 523          *         directory
 524          */
 525         public String getTempDirectory() {
 526                 return getNodeValue(new String[] { "temp-directory" }, null);
 527         }
 528
 529         /**
 530          * Sets the temp directory to use.
 531          *
 532          * @param tempDirectory
 533          *            The temp directory to use, or {@code null} to use the default
 534          *            temp directory
 535          */
 536         public void setTempDirectory(String tempDirectory) {
 537                 if (tempDirectory != null) {
 538                         SimpleXML tempDirectoryNode = new SimpleXML("temp-directory");
 539                         tempDirectoryNode.setValue(tempDirectory);
 540                         rootNode.replace(tempDirectoryNode);
 541                 } else {
 542                         rootNode.remove("temp-directory");
 543                 }
 544         }
 545
 546 }