1 | // |
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2 | // $Id: FileUploadThreadFTP.java 136 2007-05-12 20:15:36 +0000 (sam., 12 mai |
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3 | // 2007) felfert $ |
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4 | // |
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5 | // jupload - A file upload applet. |
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6 | // Copyright 2007 The JUpload Team |
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7 | // |
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8 | // Created: 2007-01-01 |
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9 | // Creator: etienne_sf |
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10 | // Last modified: $Date: 2010-02-26 07:45:47 -0300 (Sex, 26 Fev 2010) $ |
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11 | // |
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12 | // This program is free software; you can redistribute it and/or modify it under |
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13 | // the terms of the GNU General Public License as published by the Free Software |
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14 | // Foundation; either version 2 of the License, or (at your option) any later |
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15 | // version. This program is distributed in the hope that it will be useful, but |
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16 | // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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17 | // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more |
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18 | // details. You should have received a copy of the GNU General Public License |
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19 | // along with this program; if not, write to the Free Software Foundation, Inc., |
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20 | // 675 Mass Ave, Cambridge, MA 02139, USA. |
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21 | |
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22 | package wjhk.jupload2.upload; |
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23 | |
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24 | import java.io.BufferedOutputStream; |
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25 | import java.io.IOException; |
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26 | import java.io.OutputStream; |
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27 | import java.util.Iterator; |
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28 | import java.util.SortedSet; |
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29 | import java.util.StringTokenizer; |
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30 | import java.util.TreeSet; |
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31 | import java.util.concurrent.BlockingQueue; |
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32 | import java.util.regex.Matcher; |
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33 | import java.util.regex.Pattern; |
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34 | |
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35 | import org.apache.commons.net.ftp.FTP; |
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36 | import org.apache.commons.net.ftp.FTPClient; |
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37 | import org.apache.commons.net.ftp.FTPConnectionClosedException; |
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38 | import org.apache.commons.net.ftp.FTPReply; |
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39 | |
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40 | import wjhk.jupload2.exception.JUploadException; |
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41 | import wjhk.jupload2.exception.JUploadExceptionUploadFailed; |
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42 | import wjhk.jupload2.exception.JUploadIOException; |
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43 | import wjhk.jupload2.policies.UploadPolicy; |
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44 | |
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45 | /** |
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46 | * The FileUploadThreadFTP class is intended to extend the functionality of the |
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47 | * JUpload applet and allow it to handle ftp:// addresses. <br> |
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48 | * Note: this class is not a V4 of the FTP upload. It is named V4, as it |
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49 | * inherits from the {@link FileUploadThread} class. <br> |
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50 | * <br> |
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51 | * In order to use it, simply change the postURL argument to the applet to |
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52 | * contain the appropriate ftp:// link. The format is: |
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53 | * |
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54 | * <pre> |
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55 | * ftp://username:password@myhost.com:21/directory |
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56 | * </pre> |
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57 | * |
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58 | * Where everything but the host is optional. There is another parameter that |
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59 | * can be passed to the applet named 'binary' which will set the file transfer |
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60 | * mode based on the value. The possible values here are 'true' or 'false'. It |
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61 | * was intended to be somewhat intelligent by looking at the file extension and |
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62 | * basing the transfer mode on that, however, it was never implemented. Feel |
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63 | * free to! Also, there is a 'passive' parameter which also has a value of |
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64 | * 'true' or 'false' which sets the connection type to either active or passive |
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65 | * mode. |
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66 | * |
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67 | * @author Evin Callahan (inheritance from DefaultUploadThread built by |
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68 | * etienne_sf) |
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69 | * @author Daystar Computer Services |
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70 | * @see FileUploadThread |
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71 | * @see DefaultFileUploadThread |
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72 | * @version 1.0, 01 Jan 2007 * Update march 2007, etienne_sf Adaptation to match |
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73 | * all JUpload functions: <DIR> <LI>Inheritance from the |
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74 | * {@link FileUploadThread} class, <LI>Use of the UploadFileData class, |
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75 | * <LI>Before upload file preparation, <LI>Upload stop by the user. <LI> |
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76 | * </DIR> |
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77 | */ |
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78 | public class FileUploadThreadFTP extends DefaultFileUploadThread { |
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79 | |
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80 | // //////////////////////////////////////////////////////////////////////////////////// |
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81 | // /////////////////////// PRIVATE ATTRIBUTES |
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82 | // /////////////////////////////////////// |
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83 | // //////////////////////////////////////////////////////////////////////////////////// |
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84 | |
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85 | // //////////////////////////////////////////////////////////////////////////////////// |
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86 | // /////////////////////// PRIVATE ATTRIBUTES |
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87 | // /////////////////////////////////////// |
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88 | // //////////////////////////////////////////////////////////////////////////////////// |
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89 | |
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90 | /** |
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91 | * The output stream, where the current file should be written. This output |
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92 | * stream should not be used. The buffered one is much faster. |
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93 | */ |
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94 | private OutputStream ftpOutputStream = null; |
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95 | |
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96 | /** |
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97 | * The buffered stream, that the application should use for upload. |
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98 | */ |
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99 | private BufferedOutputStream bufferedOutputStream = null; |
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100 | |
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101 | private Matcher uriMatch; |
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102 | |
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103 | // the client that does the actual connecting to the server |
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104 | private FTPClient ftp = new FTPClient(); |
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105 | |
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106 | /** FTP user, taken from the postURL applet parameter */ |
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107 | private String user; |
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108 | |
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109 | /** FTP password, taken from the postURL applet parameter */ |
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110 | private String pass; |
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111 | |
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112 | /** FTP target host, taken from the postURL applet parameter */ |
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113 | private String host; |
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114 | |
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115 | /** FTP target port, taken from the postURL applet parameter */ |
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116 | private String port; |
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117 | |
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118 | /** |
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119 | * FTP target root folder for the upload, taken from the postURL applet |
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120 | * parameter |
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121 | */ |
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122 | private String ftpRootFolder; |
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123 | |
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124 | /** |
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125 | * Indicates whether the connection to the FTP server is open or not. This |
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126 | * allows to connect once on the FTP server, for multiple file upload. |
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127 | */ |
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128 | private boolean bConnected = false; |
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129 | |
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130 | /** |
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131 | * This pattern defines the groups and pattern of the ftp syntax. |
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132 | */ |
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133 | public final Pattern ftpPattern = Pattern |
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134 | .compile("^ftp://(([^:]+):([^\\@]+)\\@)?([^/:]+):?([0-9]+)?(/(.*))?$"); |
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135 | |
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136 | /** |
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137 | * Creates a new instance. Performs the connection to the server based on |
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138 | * the matcher created in the main. |
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139 | * |
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140 | * @param uploadPolicy |
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141 | * @param packetQueue The queue from wich packets to upload are available. |
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142 | * @param fileUploadManagerThread |
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143 | * @throws JUploadException |
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144 | * @throws IllegalArgumentException if any error occurs. message is error |
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145 | */ |
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146 | public FileUploadThreadFTP(UploadPolicy uploadPolicy, |
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147 | BlockingQueue<UploadFilePacket> packetQueue, |
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148 | FileUploadManagerThread fileUploadManagerThread) |
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149 | throws JUploadException { |
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150 | super("FileUploadThreadFTP thread", packetQueue, uploadPolicy, |
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151 | fileUploadManagerThread); |
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152 | this.uploadPolicy.displayDebug("[FileUploadThreadFTP] Using " |
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153 | + this.getClass().getName(), 30); |
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154 | |
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155 | // Some coherence checks, for parameter given to the applet. |
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156 | |
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157 | // stringUploadSuccess: unused in FTP mode. Must be null. |
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158 | if (uploadPolicy.getStringUploadSuccess() != null) { |
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159 | uploadPolicy |
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160 | .displayWarn("FTP mode: stringUploadSuccess parameter ignored (forced to null)"); |
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161 | uploadPolicy.setProperty(UploadPolicy.PROP_STRING_UPLOAD_SUCCESS, |
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162 | null); |
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163 | } |
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164 | |
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165 | // nbFilesPerRequest: must be 1 in FTP mode. |
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166 | if (uploadPolicy.getNbFilesPerRequest() != 1) { |
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167 | uploadPolicy |
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168 | .displayWarn("FTP mode: nbFilesPerRequest parameter ignored (forced to 1)"); |
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169 | uploadPolicy.setProperty(UploadPolicy.PROP_NB_FILES_PER_REQUEST, |
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170 | "1"); |
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171 | } |
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172 | |
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173 | // maxChunkSize: must be unlimited (no chunk management in FTP mode). |
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174 | if (uploadPolicy.getMaxChunkSize() != Long.MAX_VALUE) { |
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175 | uploadPolicy |
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176 | .displayWarn("FTP mode: maxChunkSize parameter ignored (forced to Long.MAX_VALUE)"); |
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177 | uploadPolicy.setProperty(UploadPolicy.PROP_MAX_CHUNK_SIZE, Long |
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178 | .toString(Long.MAX_VALUE)); |
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179 | } |
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180 | } |
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181 | |
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182 | /** @see DefaultFileUploadThread#beforeRequest(UploadFilePacket) */ |
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183 | @Override |
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184 | void beforeRequest(UploadFilePacket packet) throws JUploadException { |
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185 | |
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186 | // If we're connected, we need to check the connection. |
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187 | if (this.bConnected) { |
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188 | // Let's check the connection is still Ok. |
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189 | try { |
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190 | this.ftp.sendNoOp(); |
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191 | } catch (FTPConnectionClosedException eClosed) { |
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192 | // Let's forget this connection. |
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193 | this.bConnected = false; |
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194 | } catch (IOException e) { |
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195 | throw new JUploadIOException(e.getClass().getName() |
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196 | + " while checking FTP connection to the server", e); |
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197 | } |
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198 | } |
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199 | |
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200 | // If not already connected ... we connect to the server. |
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201 | if (!this.bConnected) { |
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202 | // Let's connect to the FTP server. |
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203 | String url = this.uploadPolicy.getPostURL(); |
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204 | this.uriMatch = this.ftpPattern.matcher(url); |
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205 | if (!this.uriMatch.matches()) { |
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206 | throw new JUploadException("invalid URI: " + url); |
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207 | } |
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208 | this.user = this.uriMatch.group(2) == null ? "anonymous" |
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209 | : this.uriMatch.group(2); |
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210 | this.pass = this.uriMatch.group(3) == null ? "JUpload" |
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211 | : this.uriMatch.group(3); |
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212 | this.host = this.uriMatch.group(4); // no default server |
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213 | this.port = this.uriMatch.group(5) == null ? "21" : this.uriMatch |
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214 | .group(5); |
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215 | this.ftpRootFolder = (this.uriMatch.group(7) == null) ? null : "/" |
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216 | + this.uriMatch.group(7); |
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217 | // The last character must be a slash |
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218 | if (this.ftpRootFolder != null && !this.ftpRootFolder.endsWith("/")) { |
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219 | this.ftpRootFolder += "/"; |
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220 | } |
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221 | |
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222 | // do connect.. any error will be thrown up the chain |
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223 | try { |
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224 | this.ftp.setDefaultPort(Integer.parseInt(this.port)); |
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225 | this.ftp.connect(this.host); |
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226 | this.uploadPolicy.displayDebug( |
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227 | "[FileUploadThreadFTP] Connected to " + this.host, 10); |
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228 | this.uploadPolicy.displayDebug(this.ftp.getReplyString(), 80); |
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229 | |
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230 | if (!FTPReply.isPositiveCompletion(this.ftp.getReplyCode())) |
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231 | throw new JUploadException("FTP server refused connection."); |
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232 | |
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233 | // given the login information, do the login |
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234 | this.ftp.login(this.user, this.pass); |
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235 | this.uploadPolicy.displayDebug("[FileUploadThreadFTP] " |
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236 | + this.ftp.getReplyString(), 80); |
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237 | |
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238 | if (!FTPReply.isPositiveCompletion(this.ftp.getReplyCode())) |
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239 | throw new JUploadException( |
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240 | "Invalid ftp username / password"); |
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241 | |
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242 | this.bConnected = true; |
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243 | } catch (JUploadException jue) { |
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244 | // No special action, we keep the exception untouched |
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245 | throw jue; |
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246 | } catch (IOException ioe) { |
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247 | throw new JUploadIOException(ioe.getClass().getName() |
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248 | + "[FTP] Could not connect to server (" |
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249 | + ioe.getMessage() + ")", ioe); |
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250 | } catch (Exception e) { |
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251 | throw new JUploadException(e.getClass().getName() |
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252 | + "[FTP] Could not connect to server (" |
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253 | + e.getMessage() + ")", e); |
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254 | } |
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255 | |
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256 | // now do the same for the passive/active parameter |
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257 | if (this.uploadPolicy.getFtpTransfertPassive()) { |
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258 | this.ftp.enterLocalPassiveMode(); |
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259 | } else { |
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260 | this.ftp.enterLocalActiveMode(); |
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261 | } |
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262 | |
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263 | } // if(!bConnected) |
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264 | } |
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265 | |
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266 | /** @see DefaultFileUploadThread#afterFile(UploadFileData) */ |
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267 | @Override |
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268 | void afterFile(UploadFileData uploadFileData) { |
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269 | // Nothing to do |
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270 | } |
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271 | |
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272 | /** @see DefaultFileUploadThread#beforeFile(UploadFilePacket, UploadFileData) */ |
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273 | @Override |
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274 | void beforeFile(UploadFilePacket uploadFilePacket, |
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275 | UploadFileData uploadFileData) throws JUploadException { |
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276 | String workingDir = null; |
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277 | try { |
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278 | // if configured to, we go to the relative sub-folder of the current |
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279 | // file, or on the root of the postURL. |
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280 | if (this.uploadPolicy.getFtpCreateDirectoryStructure()) { |
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281 | // We create the FTP directory structure |
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282 | // TODO: call it once for all files, not once for each file. |
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283 | createDirectoryStructure(uploadFilePacket); |
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284 | |
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285 | workingDir = this.ftpRootFolder |
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286 | + uploadFileData.getRelativeDir(); |
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287 | // We want to have only slashes, as anti-slashes may generate |
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288 | // FTP errors. |
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289 | workingDir = workingDir.replace("\\", "/"); |
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290 | |
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291 | this.uploadPolicy |
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292 | .displayDebug( |
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293 | "[FileUploadThreadFTP] ftpCreateDirectoryStructure: Changing working directory to: " |
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294 | + workingDir, 80); |
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295 | } else { |
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296 | workingDir = this.ftpRootFolder; |
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297 | } |
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298 | |
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299 | if (workingDir != null && !workingDir.equals("") |
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300 | && !workingDir.equals(".")) { |
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301 | this.ftp.changeWorkingDirectory(workingDir); |
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302 | this.uploadPolicy.displayDebug("[FileUploadThreadFTP] " |
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303 | + this.ftp.getReplyString(), 80); |
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304 | } |
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305 | |
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306 | if (!FTPReply.isPositiveCompletion(this.ftp.getReplyCode())) { |
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307 | throw new JUploadException( |
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308 | "[FTP] Error while changing directory to: " |
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309 | + workingDir + " (" + this.ftp.getReplyString() |
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310 | + ")"); |
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311 | } |
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312 | |
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313 | setTransferType(uploadFileData); |
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314 | |
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315 | // No delete, as the user may not have the right for that. We use, |
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316 | // later, the store command: |
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317 | // If the file already exists, it will be replaced. |
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318 | // ftp.deleteFile(filesToUpload[index].getFileName()); |
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319 | |
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320 | // Let's open the stream for this file. |
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321 | this.ftpOutputStream = this.ftp.storeFileStream(uploadFileData |
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322 | .getFileName()); |
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323 | if (this.ftpOutputStream == null) { |
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324 | throw new JUploadIOException( |
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325 | "Stream connection to the server error. Check that your path on the URL is valid. postURL used is: " |
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326 | + this.uploadPolicy.getPostURL()); |
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327 | } |
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328 | // The upload is done through a BufferedOutputStream. This speed up |
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329 | // the upload in an unbelievable way ... |
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330 | this.bufferedOutputStream = new BufferedOutputStream( |
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331 | this.ftpOutputStream); |
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332 | } catch (IOException e) { |
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333 | throw new JUploadIOException(e); |
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334 | } |
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335 | } |
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336 | |
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337 | /** @see DefaultFileUploadThread#cleanAll() */ |
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338 | @Override |
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339 | void cleanAll() { |
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340 | try { |
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341 | if (this.ftp.isConnected()) { |
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342 | this.ftp.disconnect(); |
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343 | this.uploadPolicy.displayDebug( |
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344 | "[FileUploadThreadFTP] disconnected", 50); |
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345 | } |
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346 | } catch (IOException e) { |
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347 | // then we arent connected |
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348 | this.uploadPolicy.displayDebug( |
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349 | "[FileUploadThreadFTP] Not connected", 50); |
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350 | } finally { |
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351 | this.ftpOutputStream = null; |
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352 | this.bufferedOutputStream = null; |
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353 | } |
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354 | } |
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355 | |
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356 | /** @see DefaultFileUploadThread#cleanRequest() */ |
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357 | @Override |
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358 | void cleanRequest() throws JUploadException { |
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359 | if (this.bufferedOutputStream != null) { |
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360 | try { |
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361 | this.bufferedOutputStream.close(); |
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362 | this.ftpOutputStream.close(); |
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363 | if (!this.ftp.completePendingCommand()) { |
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364 | throw new JUploadExceptionUploadFailed( |
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365 | "ftp.completePendingCommand() returned false"); |
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366 | } |
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367 | } catch (IOException e) { |
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368 | throw new JUploadException(e); |
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369 | } finally { |
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370 | this.bufferedOutputStream = null; |
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371 | } |
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372 | } |
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373 | } |
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374 | |
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375 | /** |
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376 | * @throws JUploadIOException |
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377 | * @see DefaultFileUploadThread#finishRequest() |
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378 | */ |
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379 | @Override |
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380 | int finishRequest() throws JUploadException { |
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381 | try { |
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382 | getOutputStream().flush(); |
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383 | return 200; |
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384 | } catch (IOException ioe) { |
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385 | throw new JUploadIOException("FileUploadThreadFTP.finishRequest()", |
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386 | ioe); |
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387 | } catch (Exception e) { |
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388 | // When the user may not override an existing file, I got a |
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389 | // NullPointerException. Let's trap all errors here. |
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390 | throw new JUploadException( |
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391 | "FileUploadThreadFTP.finishRequest() (check the user permission on the server)", |
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392 | e); |
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393 | } |
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394 | } |
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395 | |
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396 | /** @see DefaultFileUploadThread#getAdditionnalBytesForUpload(UploadFileData) */ |
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397 | @Override |
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398 | long getAdditionnalBytesForUpload(UploadFileData uploadFileData) { |
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399 | // Default: no additional byte. |
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400 | return 0; |
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401 | } |
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402 | |
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403 | /** @see DefaultFileUploadThread#getOutputStream() */ |
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404 | @Override |
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405 | OutputStream getOutputStream() { |
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406 | return this.bufferedOutputStream; |
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407 | } |
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408 | |
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409 | /** @see DefaultFileUploadThread#startRequest(long, boolean, int, boolean) */ |
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410 | @Override |
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411 | void startRequest(long contentLength, boolean bChunkEnabled, int chunkPart, |
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412 | boolean bLastChunk) { |
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413 | // Nothing to do |
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414 | } |
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415 | |
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416 | /** |
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417 | * Will set the binary/ascii value based on the parameters to the applet. |
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418 | * This could be done by file extension too but it is not implemented. |
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419 | * |
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420 | * @param uploadFileData The file that we want to upload. |
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421 | * @throws IOException if an error occurs while setting mode data |
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422 | */ |
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423 | private void setTransferType(UploadFileData uploadFileData) |
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424 | throws JUploadIOException { |
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425 | try { |
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426 | // read the value given from the user |
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427 | if (this.uploadPolicy.getFtpTransfertBinary()) { |
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428 | this.ftp.setFileType(FTP.BINARY_FILE_TYPE); |
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429 | } else { |
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430 | this.ftp.setFileType(FTP.ASCII_FILE_TYPE); |
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431 | } |
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432 | } catch (IOException ioe) { |
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433 | throw new JUploadIOException( |
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434 | "Cannot set transfert binary or ascii mode (binary: " |
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435 | + this.uploadPolicy.getFtpTransfertBinary() + ")", |
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436 | ioe); |
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437 | } |
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438 | } |
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439 | |
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440 | /** |
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441 | * Create all relative sub-directories, so the structure on the server |
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442 | * reflects the structure of the uploaded files. |
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443 | * |
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444 | * @throws JUploadIOException When an error occurs during folder creation |
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445 | */ |
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446 | // A tester |
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447 | private void createDirectoryStructure(UploadFilePacket packet) |
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448 | throws JUploadIOException { |
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449 | SortedSet<String> foldersToCreate = new TreeSet<String>(); |
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450 | String folderName; |
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451 | String intermediateFolderName; |
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452 | StringTokenizer st; |
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453 | |
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454 | // 1) Let's find all folders and sub-folders we'll have to create. |
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455 | for (UploadFileData uploadFileData : packet) { |
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456 | if (isInterrupted()) { |
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457 | break; |
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458 | } |
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459 | folderName = uploadFileData.getRelativeDir(); |
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460 | folderName = folderName.replaceAll("\\\\", "/"); |
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461 | // Do we already have this folder ? |
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462 | if (!foldersToCreate.contains(folderName)) { |
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463 | // We add this folder, and all missing intermediate ones |
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464 | st = new StringTokenizer(folderName, "/"); |
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465 | intermediateFolderName = this.ftpRootFolder; |
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466 | while (st.hasMoreTokens()) { |
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467 | intermediateFolderName += st.nextToken() + "/"; |
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468 | if (!foldersToCreate.contains(intermediateFolderName)) { |
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469 | this.uploadPolicy.displayDebug( |
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470 | "FTP structure identification: Adding subfolder " |
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471 | + intermediateFolderName, 80); |
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472 | foldersToCreate.add(intermediateFolderName); |
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473 | } |
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474 | } |
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475 | } |
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476 | } |
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477 | |
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478 | // 2) Let's create theses folders. |
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479 | try { |
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480 | String folder; |
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481 | for (Iterator<String> it = foldersToCreate.iterator(); it.hasNext();) { |
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482 | folder = it.next(); |
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483 | |
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484 | // The folder is in the list of folder to create, created from |
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485 | // the file list. |
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486 | // We first check if the folder already exist. |
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487 | this.ftp.changeWorkingDirectory(folder); |
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488 | if (FTPReply.isPositiveCompletion(this.ftp.getReplyCode())) { |
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489 | this.uploadPolicy.displayDebug( |
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490 | "[FileUploadThreadFTP] Folder " + folder |
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491 | + " already exist", 80); |
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492 | } else { |
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493 | // We can not guess if it's because the folder |
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494 | // doesn't exist, or if it's a 'real' error. |
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495 | // Let's try to create the folder. |
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496 | this.ftp.mkd(folder); |
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497 | this.uploadPolicy.displayDebug( |
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498 | "[FileUploadThreadFTP] Folder " + folder |
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499 | + " created", 80); |
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500 | if (!FTPReply.isPositiveCompletion(this.ftp.getReplyCode())) { |
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501 | throw new JUploadIOException( |
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502 | "Error while creating folder '" |
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503 | + folder |
---|
504 | + "' (" |
---|
505 | + this.ftp.getReplyString().replaceAll( |
---|
506 | "\r\n", "") + ")"); |
---|
507 | } |
---|
508 | } |
---|
509 | } |
---|
510 | } catch (IOException ioe) { |
---|
511 | throw new JUploadIOException(ioe.getClass().getName() |
---|
512 | + " in FileUploadThreadFTP.createDirectoryStructure()", ioe); |
---|
513 | } |
---|
514 | } |
---|
515 | |
---|
516 | /** {@inheritDoc} */ |
---|
517 | void interruptionReceived() { |
---|
518 | cleanAll(); |
---|
519 | } |
---|
520 | } |
---|