Java tutorial
/* * 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.tools.ant.taskdefs.optional.net; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.BufferedWriter; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.FileWriter; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; import java.text.SimpleDateFormat; import java.util.Date; import java.util.Enumeration; import java.util.HashMap; import java.util.HashSet; import java.util.Hashtable; import java.util.Map; import java.util.Set; import java.util.StringTokenizer; import java.util.Vector; import org.apache.commons.net.ftp.FTPClient; import org.apache.commons.net.ftp.FTPFile; import org.apache.commons.net.ftp.FTPReply; import org.apache.tools.ant.BuildException; import org.apache.tools.ant.DirectoryScanner; import org.apache.tools.ant.Project; import org.apache.tools.ant.taskdefs.Delete; import org.apache.tools.ant.types.FileSet; import org.apache.tools.ant.types.selectors.SelectorUtils; import org.apache.tools.ant.util.FileUtils; import org.apache.tools.ant.util.RetryHandler; import org.apache.tools.ant.util.Retryable; import org.apache.tools.ant.util.VectorSet; public class FTPTaskMirrorImpl implements FTPTaskMirror { /** return code of ftp */ private static final int CODE_521 = 521; private static final int CODE_550 = 550; private static final int CODE_553 = 553; /** Date formatter used in logging, note not thread safe! */ private static final SimpleDateFormat TIMESTAMP_LOGGING_SDF = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); private static final FileUtils FILE_UTILS = FileUtils.getFileUtils(); private final FTPTask task; private Set dirCache = new HashSet(); private int transferred = 0; private int skipped = 0; /** * Constructor. * @param task the FTPTask that uses this mirror. */ public FTPTaskMirrorImpl(FTPTask task) { this.task = task; } /** * internal class providing a File-like interface to some of the information * available from the FTP server * */ protected static class FTPFileProxy extends File { private final FTPFile file; private final String[] parts; private final String name; /** * creates a proxy to a FTP file * @param file */ public FTPFileProxy(FTPFile file) { super(file.getName()); name = file.getName(); this.file = file; parts = FileUtils.getPathStack(name); } /** * creates a proxy to a FTP directory * @param completePath the remote directory. */ public FTPFileProxy(String completePath) { super(completePath); file = null; name = completePath; parts = FileUtils.getPathStack(completePath); } /* (non-Javadoc) * @see java.io.File#exists() */ public boolean exists() { return true; } /* (non-Javadoc) * @see java.io.File#getAbsolutePath() */ public String getAbsolutePath() { return name; } /* (non-Javadoc) * @see java.io.File#getName() */ public String getName() { return parts.length > 0 ? parts[parts.length - 1] : name; } /* (non-Javadoc) * @see java.io.File#getParent() */ public String getParent() { String result = ""; for (int i = 0; i < parts.length - 1; i++) { result += File.separatorChar + parts[i]; } return result; } /* (non-Javadoc) * @see java.io.File#getPath() */ public String getPath() { return name; } /** * FTP files are stored as absolute paths * @return true */ public boolean isAbsolute() { return true; } /* (non-Javadoc) * @see java.io.File#isDirectory() */ public boolean isDirectory() { return file == null; } /* (non-Javadoc) * @see java.io.File#isFile() */ public boolean isFile() { return file != null; } /** * FTP files cannot be hidden * * @return false */ public boolean isHidden() { return false; } /* (non-Javadoc) * @see java.io.File#lastModified() */ public long lastModified() { if (file != null) { return file.getTimestamp().getTimeInMillis(); } return 0; } /* (non-Javadoc) * @see java.io.File#length() */ public long length() { if (file != null) { return file.getSize(); } return 0; } } /** * internal class allowing to read the contents of a remote file system * using the FTP protocol * used in particular for ftp get operations * differences with DirectoryScanner * "" (the root of the fileset) is never included in the included directories * followSymlinks defaults to false */ protected class FTPDirectoryScanner extends DirectoryScanner { // CheckStyle:VisibilityModifier OFF - bc protected FTPClient ftp = null; // CheckStyle:VisibilityModifier ON private String rootPath = null; /** * since ant 1.6 * this flag should be set to true on UNIX and can save scanning time */ private boolean remoteSystemCaseSensitive = false; private boolean remoteSensitivityChecked = false; /** * constructor * @param ftp ftpclient object */ public FTPDirectoryScanner(FTPClient ftp) { super(); this.ftp = ftp; this.setFollowSymlinks(false); } /** * scans the remote directory, * storing internally the included files, directories, ... */ public void scan() { if (includes == null) { // No includes supplied, so set it to 'matches all' includes = new String[1]; includes[0] = "**"; } if (excludes == null) { excludes = new String[0]; } filesIncluded = new VectorSet(); filesNotIncluded = new Vector(); filesExcluded = new VectorSet(); dirsIncluded = new VectorSet(); dirsNotIncluded = new Vector(); dirsExcluded = new VectorSet(); try { String cwd = ftp.printWorkingDirectory(); // always start from the current ftp working dir forceRemoteSensitivityCheck(); checkIncludePatterns(); clearCaches(); ftp.changeWorkingDirectory(cwd); } catch (IOException e) { throw new BuildException("Unable to scan FTP server: ", e); } } /** * this routine is actually checking all the include patterns in * order to avoid scanning everything under base dir * @since ant1.6 */ private void checkIncludePatterns() { Hashtable newroots = new Hashtable(); // put in the newroots vector the include patterns without // wildcard tokens for (int icounter = 0; icounter < includes.length; icounter++) { String newpattern = SelectorUtils.rtrimWildcardTokens(includes[icounter]); newroots.put(newpattern, includes[icounter]); } if (task.getRemotedir() == null) { try { task.setRemotedir(ftp.printWorkingDirectory()); } catch (IOException e) { throw new BuildException("could not read current ftp directory", task.getLocation()); } } AntFTPFile baseFTPFile = new AntFTPRootFile(ftp, task.getRemotedir()); rootPath = baseFTPFile.getAbsolutePath(); // construct it if (newroots.containsKey("")) { // we are going to scan everything anyway scandir(rootPath, "", true); } else { // only scan directories that can include matched files or // directories Enumeration enum2 = newroots.keys(); while (enum2.hasMoreElements()) { String currentelement = (String) enum2.nextElement(); String originalpattern = (String) newroots.get(currentelement); AntFTPFile myfile = new AntFTPFile(baseFTPFile, currentelement); boolean isOK = true; boolean traversesSymlinks = false; String path = null; if (myfile.exists()) { forceRemoteSensitivityCheck(); if (remoteSensitivityChecked && remoteSystemCaseSensitive && isFollowSymlinks()) { // cool case, //we do not need to scan all the subdirs in the relative path path = myfile.getFastRelativePath(); } else { // may be on a case insensitive file system. We want // the results to show what's really on the disk, so // we need to double check. try { path = myfile.getRelativePath(); traversesSymlinks = myfile.isTraverseSymlinks(); } catch (IOException be) { throw new BuildException(be, task.getLocation()); } catch (BuildException be) { isOK = false; } } } else { isOK = false; } if (isOK) { currentelement = path.replace(task.getSeparator().charAt(0), File.separatorChar); if (!isFollowSymlinks() && traversesSymlinks) { continue; } if (myfile.isDirectory()) { if (isIncluded(currentelement) && currentelement.length() > 0) { accountForIncludedDir(currentelement, myfile, true); } else { if (currentelement.length() > 0) { if (currentelement.charAt(currentelement.length() - 1) != File.separatorChar) { currentelement = currentelement + File.separatorChar; } } scandir(myfile.getAbsolutePath(), currentelement, true); } } else { if (isCaseSensitive && originalpattern.equals(currentelement)) { accountForIncludedFile(currentelement); } else if (!isCaseSensitive && originalpattern.equalsIgnoreCase(currentelement)) { accountForIncludedFile(currentelement); } } } } } } /** * scans a particular directory. populates the scannedDirs cache. * * @param dir directory to scan * @param vpath relative path to the base directory of the remote fileset * always ended with a File.separator * @param fast seems to be always true in practice */ protected void scandir(String dir, String vpath, boolean fast) { // avoid double scanning of directories, can only happen in fast mode if (fast && hasBeenScanned(vpath)) { return; } try { if (!ftp.changeWorkingDirectory(dir)) { return; } String completePath = null; if (!vpath.equals("")) { completePath = rootPath + task.getSeparator() + vpath.replace(File.separatorChar, task.getSeparator().charAt(0)); } else { completePath = rootPath; } FTPFile[] newfiles = listFiles(completePath, false); if (newfiles == null) { ftp.changeToParentDirectory(); return; } for (int i = 0; i < newfiles.length; i++) { FTPFile file = newfiles[i]; if (file != null && !file.getName().equals(".") && !file.getName().equals("..")) { String name = vpath + file.getName(); scannedDirs.put(name, new FTPFileProxy(file)); if (isFunctioningAsDirectory(ftp, dir, file)) { boolean slowScanAllowed = true; if (!isFollowSymlinks() && file.isSymbolicLink()) { dirsExcluded.addElement(name); slowScanAllowed = false; } else if (isIncluded(name)) { accountForIncludedDir(name, new AntFTPFile(ftp, file, completePath), fast); } else { dirsNotIncluded.addElement(name); if (fast && couldHoldIncluded(name)) { scandir(file.getName(), name + File.separator, fast); } } if (!fast && slowScanAllowed) { scandir(file.getName(), name + File.separator, fast); } } else { if (!isFollowSymlinks() && file.isSymbolicLink()) { filesExcluded.addElement(name); } else if (isFunctioningAsFile(ftp, dir, file)) { accountForIncludedFile(name); } } } } ftp.changeToParentDirectory(); } catch (IOException e) { throw new BuildException("Error while communicating with FTP " + "server: ", e); } } /** * process included file * @param name path of the file relative to the directory of the fileset */ private void accountForIncludedFile(String name) { if (!filesIncluded.contains(name) && !filesExcluded.contains(name)) { if (isIncluded(name)) { if (!isExcluded(name) && isSelected(name, (File) scannedDirs.get(name))) { filesIncluded.addElement(name); } else { filesExcluded.addElement(name); } } else { filesNotIncluded.addElement(name); } } } /** * * @param name path of the directory relative to the directory of * the fileset * @param file directory as file * @param fast */ private void accountForIncludedDir(String name, AntFTPFile file, boolean fast) { if (!dirsIncluded.contains(name) && !dirsExcluded.contains(name)) { if (!isExcluded(name)) { if (fast) { if (file.isSymbolicLink()) { try { file.getClient().changeWorkingDirectory(file.curpwd); } catch (IOException ioe) { throw new BuildException("could not change directory to curpwd"); } scandir(file.getLink(), name + File.separator, fast); } else { try { file.getClient().changeWorkingDirectory(file.curpwd); } catch (IOException ioe) { throw new BuildException("could not change directory to curpwd"); } scandir(file.getName(), name + File.separator, fast); } } dirsIncluded.addElement(name); } else { dirsExcluded.addElement(name); if (fast && couldHoldIncluded(name)) { try { file.getClient().changeWorkingDirectory(file.curpwd); } catch (IOException ioe) { throw new BuildException("could not change directory to curpwd"); } scandir(file.getName(), name + File.separator, fast); } } } } /** * temporary table to speed up the various scanning methods below * * @since Ant 1.6 */ private Map fileListMap = new HashMap(); /** * List of all scanned directories. * * @since Ant 1.6 */ private Map scannedDirs = new HashMap(); /** * Has the directory with the given path relative to the base * directory already been scanned? * * @since Ant 1.6 */ private boolean hasBeenScanned(String vpath) { return scannedDirs.containsKey(vpath); } /** * Clear internal caches. * * @since Ant 1.6 */ private void clearCaches() { fileListMap.clear(); scannedDirs.clear(); } /** * list the files present in one directory. * @param directory full path on the remote side * @param changedir if true change to directory directory before listing * @return array of FTPFile */ public FTPFile[] listFiles(String directory, boolean changedir) { //task.log("listing files in directory " + directory, Project.MSG_DEBUG); String currentPath = directory; if (changedir) { try { boolean result = ftp.changeWorkingDirectory(directory); if (!result) { return null; } currentPath = ftp.printWorkingDirectory(); } catch (IOException ioe) { throw new BuildException(ioe, task.getLocation()); } } if (fileListMap.containsKey(currentPath)) { task.log("filelist map used in listing files", Project.MSG_DEBUG); return ((FTPFile[]) fileListMap.get(currentPath)); } FTPFile[] result = null; try { result = ftp.listFiles(); } catch (IOException ioe) { throw new BuildException(ioe, task.getLocation()); } fileListMap.put(currentPath, result); if (!remoteSensitivityChecked) { checkRemoteSensitivity(result, directory); } return result; } private void forceRemoteSensitivityCheck() { if (!remoteSensitivityChecked) { try { checkRemoteSensitivity(ftp.listFiles(), ftp.printWorkingDirectory()); } catch (IOException ioe) { throw new BuildException(ioe, task.getLocation()); } } } /** * cd into one directory and * list the files present in one directory. * @param directory full path on the remote side * @return array of FTPFile */ public FTPFile[] listFiles(String directory) { return listFiles(directory, true); } private void checkRemoteSensitivity(FTPFile[] array, String directory) { if (array == null) { return; } boolean candidateFound = false; String target = null; for (int icounter = 0; icounter < array.length; icounter++) { if (array[icounter] != null && array[icounter].isDirectory()) { if (!array[icounter].getName().equals(".") && !array[icounter].getName().equals("..")) { candidateFound = true; target = fiddleName(array[icounter].getName()); task.log("will try to cd to " + target + " where a directory called " + array[icounter].getName() + " exists", Project.MSG_DEBUG); for (int pcounter = 0; pcounter < array.length; pcounter++) { if (array[pcounter] != null && pcounter != icounter && target.equals(array[pcounter].getName())) { candidateFound = false; break; } } if (candidateFound) { break; } } } } if (candidateFound) { try { task.log("testing case sensitivity, attempting to cd to " + target, Project.MSG_DEBUG); remoteSystemCaseSensitive = !ftp.changeWorkingDirectory(target); } catch (IOException ioe) { remoteSystemCaseSensitive = true; } finally { try { ftp.changeWorkingDirectory(directory); } catch (IOException ioe) { throw new BuildException(ioe, task.getLocation()); } } task.log("remote system is case sensitive : " + remoteSystemCaseSensitive, Project.MSG_VERBOSE); remoteSensitivityChecked = true; } } private String fiddleName(String origin) { StringBuffer result = new StringBuffer(); for (int icounter = 0; icounter < origin.length(); icounter++) { if (Character.isLowerCase(origin.charAt(icounter))) { result.append(Character.toUpperCase(origin.charAt(icounter))); } else if (Character.isUpperCase(origin.charAt(icounter))) { result.append(Character.toLowerCase(origin.charAt(icounter))); } else { result.append(origin.charAt(icounter)); } } return result.toString(); } /** * an AntFTPFile is a representation of a remote file * @since Ant 1.6 */ protected class AntFTPFile { /** * ftp client */ private FTPClient client; /** * parent directory of the file */ private String curpwd; /** * the file itself */ private FTPFile ftpFile; /** * */ private AntFTPFile parent = null; private boolean relativePathCalculated = false; private boolean traversesSymlinks = false; private String relativePath = ""; /** * constructor * @param client ftp client variable * @param ftpFile the file * @param curpwd absolute remote path where the file is found */ public AntFTPFile(FTPClient client, FTPFile ftpFile, String curpwd) { this.client = client; this.ftpFile = ftpFile; this.curpwd = curpwd; } /** * other constructor * @param parent the parent file * @param path a relative path to the parent file */ public AntFTPFile(AntFTPFile parent, String path) { this.parent = parent; this.client = parent.client; Vector pathElements = SelectorUtils.tokenizePath(path); try { boolean result = this.client.changeWorkingDirectory(parent.getAbsolutePath()); //this should not happen, except if parent has been deleted by another process if (!result) { return; } this.curpwd = parent.getAbsolutePath(); } catch (IOException ioe) { throw new BuildException("could not change working dir to " + parent.curpwd); } final int size = pathElements.size(); for (int fcount = 0; fcount < size - 1; fcount++) { String currentPathElement = (String) pathElements.elementAt(fcount); try { boolean result = this.client.changeWorkingDirectory(currentPathElement); if (!result && !isCaseSensitive() && (remoteSystemCaseSensitive || !remoteSensitivityChecked)) { currentPathElement = findPathElementCaseUnsensitive(this.curpwd, currentPathElement); if (currentPathElement == null) { return; } } else if (!result) { return; } this.curpwd = getCurpwdPlusFileSep() + currentPathElement; } catch (IOException ioe) { throw new BuildException("could not change working dir to " + (String) pathElements.elementAt(fcount) + " from " + this.curpwd); } } String lastpathelement = (String) pathElements.elementAt(size - 1); FTPFile[] theFiles = listFiles(this.curpwd); this.ftpFile = getFile(theFiles, lastpathelement); } /** * find a file in a directory in case unsensitive way * @param parentPath where we are * @param soughtPathElement what is being sought * @return the first file found or null if not found */ private String findPathElementCaseUnsensitive(String parentPath, String soughtPathElement) { // we are already in the right path, so the second parameter // is false FTPFile[] theFiles = listFiles(parentPath, false); if (theFiles == null) { return null; } for (int icounter = 0; icounter < theFiles.length; icounter++) { if (theFiles[icounter] != null && theFiles[icounter].getName().equalsIgnoreCase(soughtPathElement)) { return theFiles[icounter].getName(); } } return null; } /** * find out if the file exists * @return true if the file exists */ public boolean exists() { return (ftpFile != null); } /** * if the file is a symbolic link, find out to what it is pointing * @return the target of the symbolic link */ public String getLink() { return ftpFile.getLink(); } /** * get the name of the file * @return the name of the file */ public String getName() { return ftpFile.getName(); } /** * find out the absolute path of the file * @return absolute path as string */ public String getAbsolutePath() { return getCurpwdPlusFileSep() + ftpFile.getName(); } /** * find out the relative path assuming that the path used to construct * this AntFTPFile was spelled properly with regards to case. * This is OK on a case sensitive system such as UNIX * @return relative path */ public String getFastRelativePath() { String absPath = getAbsolutePath(); if (absPath.startsWith(rootPath + task.getSeparator())) { return absPath.substring(rootPath.length() + task.getSeparator().length()); } return null; } /** * find out the relative path to the rootPath of the enclosing scanner. * this relative path is spelled exactly like on disk, * for instance if the AntFTPFile has been instantiated as ALPHA, * but the file is really called alpha, this method will return alpha. * If a symbolic link is encountered, it is followed, but the name of the link * rather than the name of the target is returned. * (ie does not behave like File.getCanonicalPath()) * @return relative path, separated by remoteFileSep * @throws IOException if a change directory fails, ... * @throws BuildException if one of the components of the relative path cannot * be found. */ public String getRelativePath() throws IOException, BuildException { if (!relativePathCalculated) { if (parent != null) { traversesSymlinks = parent.isTraverseSymlinks(); relativePath = getRelativePath(parent.getAbsolutePath(), parent.getRelativePath()); } else { relativePath = getRelativePath(rootPath, ""); relativePathCalculated = true; } } return relativePath; } /** * get the relative path of this file * @param currentPath base path * @param currentRelativePath relative path of the base path with regards to remote dir * @return relative path */ private String getRelativePath(String currentPath, String currentRelativePath) { Vector pathElements = SelectorUtils.tokenizePath(getAbsolutePath(), task.getSeparator()); Vector pathElements2 = SelectorUtils.tokenizePath(currentPath, task.getSeparator()); String relPath = currentRelativePath; final int size = pathElements.size(); for (int pcount = pathElements2.size(); pcount < size; pcount++) { String currentElement = (String) pathElements.elementAt(pcount); FTPFile[] theFiles = listFiles(currentPath); FTPFile theFile = null; if (theFiles != null) { theFile = getFile(theFiles, currentElement); } if (!relPath.equals("")) { relPath = relPath + task.getSeparator(); } if (theFile == null) { // hit a hidden file assume not a symlink relPath = relPath + currentElement; currentPath = currentPath + task.getSeparator() + currentElement; task.log("Hidden file " + relPath + " assumed to not be a symlink.", Project.MSG_VERBOSE); } else { traversesSymlinks = traversesSymlinks || theFile.isSymbolicLink(); relPath = relPath + theFile.getName(); currentPath = currentPath + task.getSeparator() + theFile.getName(); } } return relPath; } /** * find a file matching a string in an array of FTPFile. * This method will find "alpha" when requested for "ALPHA" * if and only if the caseSensitive attribute is set to false. * When caseSensitive is set to true, only the exact match is returned. * @param theFiles array of files * @param lastpathelement the file name being sought * @return null if the file cannot be found, otherwise return the matching file. */ public FTPFile getFile(FTPFile[] theFiles, String lastpathelement) { if (theFiles == null) { return null; } for (int fcount = 0; fcount < theFiles.length; fcount++) { if (theFiles[fcount] != null) { if (theFiles[fcount].getName().equals(lastpathelement)) { return theFiles[fcount]; } else if (!isCaseSensitive() && theFiles[fcount].getName().equalsIgnoreCase(lastpathelement)) { return theFiles[fcount]; } } } return null; } /** * tell if a file is a directory. * note that it will return false for symbolic links pointing to directories. * @return <code>true</code> for directories */ public boolean isDirectory() { return ftpFile.isDirectory(); } /** * tell if a file is a symbolic link * @return <code>true</code> for symbolic links */ public boolean isSymbolicLink() { return ftpFile.isSymbolicLink(); } /** * return the attached FTP client object. * Warning : this instance is really shared with the enclosing class. * @return FTP client */ protected FTPClient getClient() { return client; } /** * sets the current path of an AntFTPFile * @param curpwd the current path one wants to set */ protected void setCurpwd(String curpwd) { this.curpwd = curpwd; } /** * returns the path of the directory containing the AntFTPFile. * of the full path of the file itself in case of AntFTPRootFile * @return parent directory of the AntFTPFile */ public String getCurpwd() { return curpwd; } /** * returns the path of the directory containing the AntFTPFile. * of the full path of the file itself in case of AntFTPRootFile * and appends the remote file separator if necessary. * @return parent directory of the AntFTPFile * @since Ant 1.8.2 */ public String getCurpwdPlusFileSep() { String sep = task.getSeparator(); return curpwd.endsWith(sep) ? curpwd : curpwd + sep; } /** * find out if a symbolic link is encountered in the relative path of this file * from rootPath. * @return <code>true</code> if a symbolic link is encountered in the relative path. * @throws IOException if one of the change directory or directory listing operations * fails * @throws BuildException if a path component in the relative path cannot be found. */ public boolean isTraverseSymlinks() throws IOException, BuildException { if (!relativePathCalculated) { // getRelativePath also finds about symlinks getRelativePath(); } return traversesSymlinks; } /** * Get a string rep of this object. * @return a string containing the pwd and the file. */ public String toString() { return "AntFtpFile: " + curpwd + "%" + ftpFile; } } /** * special class to represent the remote directory itself * @since Ant 1.6 */ protected class AntFTPRootFile extends AntFTPFile { private String remotedir; /** * constructor * @param aclient FTP client * @param remotedir remote directory */ public AntFTPRootFile(FTPClient aclient, String remotedir) { super(aclient, null, remotedir); this.remotedir = remotedir; try { this.getClient().changeWorkingDirectory(this.remotedir); this.setCurpwd(this.getClient().printWorkingDirectory()); } catch (IOException ioe) { throw new BuildException(ioe, task.getLocation()); } } /** * find the absolute path * @return absolute path */ public String getAbsolutePath() { return this.getCurpwd(); } /** * find out the relative path to root * @return empty string * @throws BuildException actually never * @throws IOException actually never */ public String getRelativePath() throws BuildException, IOException { return ""; } } } /** * check FTPFiles to check whether they function as directories too * the FTPFile API seem to make directory and symbolic links incompatible * we want to find out if we can cd to a symbolic link * @param dir the parent directory of the file to test * @param file the file to test * @return true if it is possible to cd to this directory * @since ant 1.6 */ private boolean isFunctioningAsDirectory(FTPClient ftp, String dir, FTPFile file) { boolean result = false; String currentWorkingDir = null; if (file.isDirectory()) { return true; } else if (file.isFile()) { return false; } try { currentWorkingDir = ftp.printWorkingDirectory(); } catch (IOException ioe) { task.log("could not find current working directory " + dir + " while checking a symlink", Project.MSG_DEBUG); } if (currentWorkingDir != null) { try { result = ftp.changeWorkingDirectory(file.getLink()); } catch (IOException ioe) { task.log("could not cd to " + file.getLink() + " while checking a symlink", Project.MSG_DEBUG); } if (result) { boolean comeback = false; try { comeback = ftp.changeWorkingDirectory(currentWorkingDir); } catch (IOException ioe) { task.log("could not cd back to " + dir + " while checking a symlink", Project.MSG_ERR); } finally { if (!comeback) { throw new BuildException("could not cd back to " + dir + " while checking a symlink"); } } } } return result; } /** * check FTPFiles to check whether they function as directories too * the FTPFile API seem to make directory and symbolic links incompatible * we want to find out if we can cd to a symbolic link * @param dir the parent directory of the file to test * @param file the file to test * @return true if it is possible to cd to this directory * @since ant 1.6 */ private boolean isFunctioningAsFile(FTPClient ftp, String dir, FTPFile file) { if (file.isDirectory()) { return false; } else if (file.isFile()) { return true; } return !isFunctioningAsDirectory(ftp, dir, file); } /** * Executable a retryable object. * @param h the retry handler. * @param r the object that should be retried until it succeeds * or the number of retrys is reached. * @param descr a description of the command that is being run. * @throws IOException if there is a problem. */ protected void executeRetryable(RetryHandler h, Retryable r, String descr) throws IOException { h.execute(r, descr); } /** * For each file in the fileset, do the appropriate action: send, get, * delete, or list. * * @param ftp the FTPClient instance used to perform FTP actions * @param fs the fileset on which the actions are performed. * * @return the number of files to be transferred. * * @throws IOException if there is a problem reading a file * @throws BuildException if there is a problem in the configuration. */ protected int transferFiles(final FTPClient ftp, FileSet fs) throws IOException, BuildException { DirectoryScanner ds; if (task.getAction() == FTPTask.SEND_FILES) { ds = fs.getDirectoryScanner(task.getProject()); } else { ds = new FTPDirectoryScanner(ftp); fs.setupDirectoryScanner(ds, task.getProject()); ds.setFollowSymlinks(fs.isFollowSymlinks()); ds.scan(); } String[] dsfiles = null; if (task.getAction() == FTPTask.RM_DIR) { dsfiles = ds.getIncludedDirectories(); } else { dsfiles = ds.getIncludedFiles(); } String dir = null; if ((ds.getBasedir() == null) && ((task.getAction() == FTPTask.SEND_FILES) || (task.getAction() == FTPTask.GET_FILES))) { throw new BuildException("the dir attribute must be set for send " + "and get actions"); } else { if ((task.getAction() == FTPTask.SEND_FILES) || (task.getAction() == FTPTask.GET_FILES)) { dir = ds.getBasedir().getAbsolutePath(); } } // If we are doing a listing, we need the output stream created now. BufferedWriter bw = null; try { if (task.getAction() == FTPTask.LIST_FILES) { File pd = task.getListing().getParentFile(); if (!pd.exists()) { pd.mkdirs(); } bw = new BufferedWriter(new FileWriter(task.getListing())); } RetryHandler h = new RetryHandler(task.getRetriesAllowed(), task); if (task.getAction() == FTPTask.RM_DIR) { // to remove directories, start by the end of the list // the trunk does not let itself be removed before the leaves for (int i = dsfiles.length - 1; i >= 0; i--) { final String dsfile = dsfiles[i]; executeRetryable(h, new Retryable() { public void execute() throws IOException { rmDir(ftp, dsfile); } }, dsfile); } } else { final BufferedWriter fbw = bw; final String fdir = dir; if (task.isNewer()) { task.setGranularityMillis(task.getTimestampGranularity().getMilliseconds(task.getAction())); } for (int i = 0; i < dsfiles.length; i++) { final String dsfile = dsfiles[i]; executeRetryable(h, new Retryable() { public void execute() throws IOException { switch (task.getAction()) { case FTPTask.SEND_FILES: sendFile(ftp, fdir, dsfile); break; case FTPTask.GET_FILES: getFile(ftp, fdir, dsfile); break; case FTPTask.DEL_FILES: delFile(ftp, dsfile); break; case FTPTask.LIST_FILES: listFile(ftp, fbw, dsfile); break; case FTPTask.CHMOD: doSiteCommand(ftp, "chmod " + task.getChmod() + " " + resolveFile(dsfile)); transferred++; break; default: throw new BuildException("unknown ftp action " + task.getAction()); } } }, dsfile); } } } finally { if (bw != null) { bw.close(); } } return dsfiles.length; } /** * Sends all files specified by the configured filesets to the remote * server. * * @param ftp the FTPClient instance used to perform FTP actions * * @throws IOException if there is a problem reading a file * @throws BuildException if there is a problem in the configuration. */ protected void transferFiles(FTPClient ftp) throws IOException, BuildException { transferred = 0; skipped = 0; if (task.getFilesets().size() == 0) { throw new BuildException("at least one fileset must be specified."); } else { // get files from filesets final int size = task.getFilesets().size(); for (int i = 0; i < size; i++) { FileSet fs = (FileSet) task.getFilesets().elementAt(i); if (fs != null) { transferFiles(ftp, fs); } } } task.log(transferred + " " + FTPTask.ACTION_TARGET_STRS[task.getAction()] + " " + FTPTask.COMPLETED_ACTION_STRS[task.getAction()]); if (skipped != 0) { task.log(skipped + " " + FTPTask.ACTION_TARGET_STRS[task.getAction()] + " were not successfully " + FTPTask.COMPLETED_ACTION_STRS[task.getAction()]); } } /** * Correct a file path to correspond to the remote host requirements. This * implementation currently assumes that the remote end can handle * Unix-style paths with forward-slash separators. This can be overridden * with the <code>separator</code> task parameter. No attempt is made to * determine what syntax is appropriate for the remote host. * * @param file the remote file name to be resolved * * @return the filename as it will appear on the server. */ protected String resolveFile(String file) { return file.replace(System.getProperty("file.separator").charAt(0), task.getSeparator().charAt(0)); } /** * Creates all parent directories specified in a complete relative * pathname. Attempts to create existing directories will not cause * errors. * * @param ftp the FTP client instance to use to execute FTP actions on * the remote server. * @param filename the name of the file whose parents should be created. * @throws IOException under non documented circumstances * @throws BuildException if it is impossible to cd to a remote directory * */ protected void createParents(FTPClient ftp, String filename) throws IOException, BuildException { File dir = new File(filename); if (dirCache.contains(dir)) { return; } Vector parents = new Vector(); String dirname; while ((dirname = dir.getParent()) != null) { File checkDir = new File(dirname); if (dirCache.contains(checkDir)) { break; } dir = checkDir; parents.addElement(dir); } // find first non cached dir int i = parents.size() - 1; if (i >= 0) { String cwd = ftp.printWorkingDirectory(); String parent = dir.getParent(); if (parent != null) { if (!ftp.changeWorkingDirectory(resolveFile(parent))) { throw new BuildException("could not change to " + "directory: " + ftp.getReplyString()); } } while (i >= 0) { dir = (File) parents.elementAt(i--); // check if dir exists by trying to change into it. if (!ftp.changeWorkingDirectory(dir.getName())) { // could not change to it - try to create it task.log("creating remote directory " + resolveFile(dir.getPath()), Project.MSG_VERBOSE); if (!ftp.makeDirectory(dir.getName())) { handleMkDirFailure(ftp); } if (!ftp.changeWorkingDirectory(dir.getName())) { throw new BuildException("could not change to " + "directory: " + ftp.getReplyString()); } } dirCache.add(dir); } ftp.changeWorkingDirectory(cwd); } } /** * auto find the time difference between local and remote * @param ftp handle to ftp client * @return number of millis to add to remote time to make it comparable to local time * @since ant 1.6 */ private long getTimeDiff(FTPClient ftp) { long returnValue = 0; File tempFile = findFileName(ftp); try { // create a local temporary file FILE_UTILS.createNewFile(tempFile); long localTimeStamp = tempFile.lastModified(); BufferedInputStream instream = new BufferedInputStream(new FileInputStream(tempFile)); ftp.storeFile(tempFile.getName(), instream); instream.close(); boolean success = FTPReply.isPositiveCompletion(ftp.getReplyCode()); if (success) { FTPFile[] ftpFiles = ftp.listFiles(tempFile.getName()); if (ftpFiles.length == 1) { long remoteTimeStamp = ftpFiles[0].getTimestamp().getTime().getTime(); returnValue = localTimeStamp - remoteTimeStamp; } ftp.deleteFile(ftpFiles[0].getName()); } // delegate the deletion of the local temp file to the delete task // because of race conditions occurring on Windows Delete mydelete = new Delete(); mydelete.bindToOwner(task); mydelete.setFile(tempFile.getCanonicalFile()); mydelete.execute(); } catch (Exception e) { throw new BuildException(e, task.getLocation()); } return returnValue; } /** * find a suitable name for local and remote temporary file */ private File findFileName(FTPClient ftp) { FTPFile[] theFiles = null; final int maxIterations = 1000; for (int counter = 1; counter < maxIterations; counter++) { File localFile = FILE_UTILS.createTempFile("ant" + Integer.toString(counter), ".tmp", null, false, false); String fileName = localFile.getName(); boolean found = false; try { if (theFiles == null) { theFiles = ftp.listFiles(); } for (int counter2 = 0; counter2 < theFiles.length; counter2++) { if (theFiles[counter2] != null && theFiles[counter2].getName().equals(fileName)) { found = true; break; } } } catch (IOException ioe) { throw new BuildException(ioe, task.getLocation()); } if (!found) { localFile.deleteOnExit(); return localFile; } } return null; } /** * Checks to see if the remote file is current as compared with the local * file. Returns true if the target file is up to date. * @param ftp ftpclient * @param localFile local file * @param remoteFile remote file * @return true if the target file is up to date * @throws IOException in unknown circumstances * @throws BuildException if the date of the remote files cannot be found and the action is * GET_FILES */ protected boolean isUpToDate(FTPClient ftp, File localFile, String remoteFile) throws IOException, BuildException { task.log("checking date for " + remoteFile, Project.MSG_VERBOSE); FTPFile[] files = ftp.listFiles(remoteFile); // For Microsoft's Ftp-Service an Array with length 0 is // returned if configured to return listings in "MS-DOS"-Format if (files == null || files.length == 0) { // If we are sending files, then assume out of date. // If we are getting files, then throw an error if (task.getAction() == FTPTask.SEND_FILES) { task.log("Could not date test remote file: " + remoteFile + "assuming out of date.", Project.MSG_VERBOSE); return false; } else { throw new BuildException("could not date test remote file: " + ftp.getReplyString()); } } long remoteTimestamp = files[0].getTimestamp().getTime().getTime(); long localTimestamp = localFile.lastModified(); long adjustedRemoteTimestamp = remoteTimestamp + task.getTimeDiffMillis() + task.getGranularityMillis(); StringBuffer msg; synchronized (TIMESTAMP_LOGGING_SDF) { msg = new StringBuffer(" [").append(TIMESTAMP_LOGGING_SDF.format(new Date(localTimestamp))) .append("] local"); } task.log(msg.toString(), Project.MSG_VERBOSE); synchronized (TIMESTAMP_LOGGING_SDF) { msg = new StringBuffer(" [").append(TIMESTAMP_LOGGING_SDF.format(new Date(adjustedRemoteTimestamp))) .append("] remote"); } if (remoteTimestamp != adjustedRemoteTimestamp) { synchronized (TIMESTAMP_LOGGING_SDF) { msg.append(" - (raw: ").append(TIMESTAMP_LOGGING_SDF.format(new Date(remoteTimestamp))).append(")"); } } task.log(msg.toString(), Project.MSG_VERBOSE); if (task.getAction() == FTPTask.SEND_FILES) { return adjustedRemoteTimestamp >= localTimestamp; } else { return localTimestamp >= adjustedRemoteTimestamp; } } /** * Sends a site command to the ftp server * @param ftp ftp client * @param theCMD command to execute * @throws IOException in unknown circumstances * @throws BuildException in unknown circumstances */ protected void doSiteCommand(FTPClient ftp, String theCMD) throws IOException, BuildException { boolean rc; String[] myReply = null; task.log("Doing Site Command: " + theCMD, Project.MSG_VERBOSE); rc = ftp.sendSiteCommand(theCMD); if (!rc) { task.log("Failed to issue Site Command: " + theCMD, Project.MSG_WARN); } else { myReply = ftp.getReplyStrings(); for (int x = 0; x < myReply.length; x++) { if (myReply[x].indexOf("200") == -1) { task.log(myReply[x], Project.MSG_WARN); } } } } /** * Sends a single file to the remote host. <code>filename</code> may * contain a relative path specification. When this is the case, <code>sendFile</code> * will attempt to create any necessary parent directories before sending * the file. The file will then be sent using the entire relative path * spec - no attempt is made to change directories. It is anticipated that * this may eventually cause problems with some FTP servers, but it * simplifies the coding. * @param ftp ftp client * @param dir base directory of the file to be sent (local) * @param filename relative path of the file to be send * locally relative to dir * remotely relative to the remotedir attribute * @throws IOException in unknown circumstances * @throws BuildException in unknown circumstances */ protected void sendFile(FTPClient ftp, String dir, String filename) throws IOException, BuildException { InputStream instream = null; try { // TODO - why not simply new File(dir, filename)? File file = task.getProject().resolveFile(new File(dir, filename).getPath()); if (task.isNewer() && isUpToDate(ftp, file, resolveFile(filename))) { return; } if (task.isVerbose()) { task.log("transferring " + file.getAbsolutePath()); } instream = new BufferedInputStream(new FileInputStream(file)); createParents(ftp, filename); ftp.storeFile(resolveFile(filename), instream); boolean success = FTPReply.isPositiveCompletion(ftp.getReplyCode()); if (!success) { String s = "could not put file: " + ftp.getReplyString(); if (task.isSkipFailedTransfers()) { task.log(s, Project.MSG_WARN); skipped++; } else { throw new BuildException(s); } } else { // see if we should issue a chmod command if (task.getChmod() != null) { doSiteCommand(ftp, "chmod " + task.getChmod() + " " + resolveFile(filename)); } task.log("File " + file.getAbsolutePath() + " copied to " + task.getServer(), Project.MSG_VERBOSE); transferred++; } } finally { FileUtils.close(instream); } } /** * Delete a file from the remote host. * @param ftp ftp client * @param filename file to delete * @throws IOException in unknown circumstances * @throws BuildException if skipFailedTransfers is set to false * and the deletion could not be done */ protected void delFile(FTPClient ftp, String filename) throws IOException, BuildException { if (task.isVerbose()) { task.log("deleting " + filename); } if (!ftp.deleteFile(resolveFile(filename))) { String s = "could not delete file: " + ftp.getReplyString(); if (task.isSkipFailedTransfers()) { task.log(s, Project.MSG_WARN); skipped++; } else { throw new BuildException(s); } } else { task.log("File " + filename + " deleted from " + task.getServer(), Project.MSG_VERBOSE); transferred++; } } /** * Delete a directory, if empty, from the remote host. * @param ftp ftp client * @param dirname directory to delete * @throws IOException in unknown circumstances * @throws BuildException if skipFailedTransfers is set to false * and the deletion could not be done */ protected void rmDir(FTPClient ftp, String dirname) throws IOException, BuildException { if (task.isVerbose()) { task.log("removing " + dirname); } if (!ftp.removeDirectory(resolveFile(dirname))) { String s = "could not remove directory: " + ftp.getReplyString(); if (task.isSkipFailedTransfers()) { task.log(s, Project.MSG_WARN); skipped++; } else { throw new BuildException(s); } } else { task.log("Directory " + dirname + " removed from " + task.getServer(), Project.MSG_VERBOSE); transferred++; } } /** * Retrieve a single file from the remote host. <code>filename</code> may * contain a relative path specification. <p> * * The file will then be retreived using the entire relative path spec - * no attempt is made to change directories. It is anticipated that this * may eventually cause problems with some FTP servers, but it simplifies * the coding.</p> * @param ftp the ftp client * @param dir local base directory to which the file should go back * @param filename relative path of the file based upon the ftp remote directory * and/or the local base directory (dir) * @throws IOException in unknown circumstances * @throws BuildException if skipFailedTransfers is false * and the file cannot be retrieved. */ protected void getFile(FTPClient ftp, String dir, String filename) throws IOException, BuildException { OutputStream outstream = null; try { File file = task.getProject().resolveFile(new File(dir, filename).getPath()); if (task.isNewer() && isUpToDate(ftp, file, resolveFile(filename))) { return; } if (task.isVerbose()) { task.log("transferring " + filename + " to " + file.getAbsolutePath()); } File pdir = file.getParentFile(); if (!pdir.exists()) { pdir.mkdirs(); } outstream = new BufferedOutputStream(new FileOutputStream(file)); ftp.retrieveFile(resolveFile(filename), outstream); if (!FTPReply.isPositiveCompletion(ftp.getReplyCode())) { String s = "could not get file: " + ftp.getReplyString(); if (task.isSkipFailedTransfers()) { task.log(s, Project.MSG_WARN); skipped++; } else { throw new BuildException(s); } } else { task.log("File " + file.getAbsolutePath() + " copied from " + task.getServer(), Project.MSG_VERBOSE); transferred++; if (task.isPreserveLastModified()) { outstream.close(); outstream = null; FTPFile[] remote = ftp.listFiles(resolveFile(filename)); if (remote.length > 0) { FILE_UTILS.setFileLastModified(file, remote[0].getTimestamp().getTime().getTime()); } } } } finally { FileUtils.close(outstream); } } /** * List information about a single file from the remote host. <code>filename</code> * may contain a relative path specification. <p> * * The file listing will then be retrieved using the entire relative path * spec - no attempt is made to change directories. It is anticipated that * this may eventually cause problems with some FTP servers, but it * simplifies the coding.</p> * @param ftp ftp client * @param bw buffered writer * @param filename the directory one wants to list * @throws IOException in unknown circumstances * @throws BuildException in unknown circumstances */ protected void listFile(FTPClient ftp, BufferedWriter bw, String filename) throws IOException, BuildException { if (task.isVerbose()) { task.log("listing " + filename); } FTPFile[] ftpfiles = ftp.listFiles(resolveFile(filename)); if (ftpfiles != null && ftpfiles.length > 0) { bw.write(ftpfiles[0].toString()); bw.newLine(); transferred++; } } /** * Create the specified directory on the remote host. * * @param ftp The FTP client connection * @param dir The directory to create (format must be correct for host * type) * @throws IOException in unknown circumstances * @throws BuildException if ignoreNoncriticalErrors has not been set to true * and a directory could not be created, for instance because it was * already existing. Precisely, the codes 521, 550 and 553 will trigger * a BuildException */ protected void makeRemoteDir(FTPClient ftp, String dir) throws IOException, BuildException { String workingDirectory = ftp.printWorkingDirectory(); if (task.isVerbose()) { if (dir.startsWith("/") || workingDirectory == null) { task.log("Creating directory: " + dir + " in /"); } else { task.log("Creating directory: " + dir + " in " + workingDirectory); } } if (dir.startsWith("/")) { ftp.changeWorkingDirectory("/"); } String subdir = ""; StringTokenizer st = new StringTokenizer(dir, "/"); while (st.hasMoreTokens()) { subdir = st.nextToken(); task.log("Checking " + subdir, Project.MSG_DEBUG); if (!ftp.changeWorkingDirectory(subdir)) { if (!ftp.makeDirectory(subdir)) { // codes 521, 550 and 553 can be produced by FTP Servers // to indicate that an attempt to create a directory has // failed because the directory already exists. int rc = ftp.getReplyCode(); if (!(task.isIgnoreNoncriticalErrors() && (rc == CODE_550 || rc == CODE_553 || rc == CODE_521))) { throw new BuildException("could not create directory: " + ftp.getReplyString()); } if (task.isVerbose()) { task.log("Directory already exists"); } } else { if (task.isVerbose()) { task.log("Directory created OK"); } ftp.changeWorkingDirectory(subdir); } } } if (workingDirectory != null) { ftp.changeWorkingDirectory(workingDirectory); } } /** * look at the response for a failed mkdir action, decide whether * it matters or not. If it does, we throw an exception * @param ftp current ftp connection * @throws BuildException if this is an error to signal */ private void handleMkDirFailure(FTPClient ftp) throws BuildException { int rc = ftp.getReplyCode(); if (!(task.isIgnoreNoncriticalErrors() && (rc == CODE_550 || rc == CODE_553 || rc == CODE_521))) { throw new BuildException("could not create directory: " + ftp.getReplyString()); } } public void doFTP() throws BuildException { FTPClient ftp = null; try { task.log("Opening FTP connection to " + task.getServer(), Project.MSG_VERBOSE); ftp = new FTPClient(); if (task.isConfigurationSet()) { ftp = FTPConfigurator.configure(ftp, task); } ftp.setRemoteVerificationEnabled(task.getEnableRemoteVerification()); ftp.connect(task.getServer(), task.getPort()); if (!FTPReply.isPositiveCompletion(ftp.getReplyCode())) { throw new BuildException("FTP connection failed: " + ftp.getReplyString()); } task.log("connected", Project.MSG_VERBOSE); task.log("logging in to FTP server", Project.MSG_VERBOSE); if ((task.getAccount() != null && !ftp.login(task.getUserid(), task.getPassword(), task.getAccount())) || (task.getAccount() == null && !ftp.login(task.getUserid(), task.getPassword()))) { throw new BuildException("Could not login to FTP server"); } task.log("login succeeded", Project.MSG_VERBOSE); if (task.isBinary()) { ftp.setFileType(org.apache.commons.net.ftp.FTP.BINARY_FILE_TYPE); if (!FTPReply.isPositiveCompletion(ftp.getReplyCode())) { throw new BuildException("could not set transfer type: " + ftp.getReplyString()); } } else { ftp.setFileType(org.apache.commons.net.ftp.FTP.ASCII_FILE_TYPE); if (!FTPReply.isPositiveCompletion(ftp.getReplyCode())) { throw new BuildException("could not set transfer type: " + ftp.getReplyString()); } } if (task.isPassive()) { task.log("entering passive mode", Project.MSG_VERBOSE); ftp.enterLocalPassiveMode(); if (!FTPReply.isPositiveCompletion(ftp.getReplyCode())) { throw new BuildException("could not enter into passive " + "mode: " + ftp.getReplyString()); } } // If an initial command was configured then send it. // Some FTP servers offer different modes of operation, // E.G. switching between a UNIX file system mode and // a legacy file system. if (task.getInitialSiteCommand() != null) { RetryHandler h = new RetryHandler(task.getRetriesAllowed(), task); final FTPClient lftp = ftp; executeRetryable(h, new Retryable() { public void execute() throws IOException { doSiteCommand(lftp, task.getInitialSiteCommand()); } }, "initial site command: " + task.getInitialSiteCommand()); } // For a unix ftp server you can set the default mask for all files // created. if (task.getUmask() != null) { RetryHandler h = new RetryHandler(task.getRetriesAllowed(), task); final FTPClient lftp = ftp; executeRetryable(h, new Retryable() { public void execute() throws IOException { doSiteCommand(lftp, "umask " + task.getUmask()); } }, "umask " + task.getUmask()); } // If the action is MK_DIR, then the specified remote // directory is the directory to create. if (task.getAction() == FTPTask.MK_DIR) { RetryHandler h = new RetryHandler(task.getRetriesAllowed(), task); final FTPClient lftp = ftp; executeRetryable(h, new Retryable() { public void execute() throws IOException { makeRemoteDir(lftp, task.getRemotedir()); } }, task.getRemotedir()); } else if (task.getAction() == FTPTask.SITE_CMD) { RetryHandler h = new RetryHandler(task.getRetriesAllowed(), task); final FTPClient lftp = ftp; executeRetryable(h, new Retryable() { public void execute() throws IOException { doSiteCommand(lftp, task.getSiteCommand()); } }, "Site Command: " + task.getSiteCommand()); } else { if (task.getRemotedir() != null) { task.log("changing the remote directory", Project.MSG_VERBOSE); ftp.changeWorkingDirectory(task.getRemotedir()); if (!FTPReply.isPositiveCompletion(ftp.getReplyCode())) { throw new BuildException("could not change remote " + "directory: " + ftp.getReplyString()); } } if (task.isNewer() && task.isTimeDiffAuto()) { // in this case we want to find how much time span there is between local // and remote task.setTimeDiffMillis(getTimeDiff(ftp)); } task.log( FTPTask.ACTION_STRS[task.getAction()] + " " + FTPTask.ACTION_TARGET_STRS[task.getAction()]); transferFiles(ftp); } } catch (IOException ex) { throw new BuildException("error during FTP transfer: " + ex, ex); } finally { if (ftp != null && ftp.isConnected()) { try { task.log("disconnecting", Project.MSG_VERBOSE); ftp.logout(); ftp.disconnect(); } catch (IOException ex) { // ignore it } } } } }