Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Licensed to the Apache Software Foundation (ASF) under one |
| 3 | * or more contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. The ASF licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | package org.apache.commons.compress.archivers.tar; |
| 20 | |
| 21 | import java.io.File; |
| 22 | import java.util.Date; |
| 23 | import java.util.Locale; |
| 24 | |
| 25 | import org.apache.commons.compress.archivers.ArchiveEntry; |
| 26 | |
| 27 | /** |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 28 | * This class represents an entry in a Tar archive. It consists |
| 29 | * of the entry's header, as well as the entry's File. Entries |
| 30 | * can be instantiated in one of three ways, depending on how |
| 31 | * they are to be used. |
| 32 | * <p> |
| 33 | * TarEntries that are created from the header bytes read from |
| 34 | * an archive are instantiated with the TarEntry( byte[] ) |
| 35 | * constructor. These entries will be used when extracting from |
| 36 | * or listing the contents of an archive. These entries have their |
| 37 | * header filled in using the header bytes. They also set the File |
| 38 | * to null, since they reference an archive entry not a file. |
| 39 | * <p> |
| 40 | * TarEntries that are created from Files that are to be written |
| 41 | * into an archive are instantiated with the TarEntry( File ) |
| 42 | * constructor. These entries have their header filled in using |
| 43 | * the File's information. They also keep a reference to the File |
| 44 | * for convenience when writing entries. |
| 45 | * <p> |
| 46 | * Finally, TarEntries can be constructed from nothing but a name. |
| 47 | * This allows the programmer to construct the entry by hand, for |
| 48 | * instance when only an InputStream is available for writing to |
| 49 | * the archive, and the header information is constructed from |
| 50 | * other information. In this case the header fields are set to |
| 51 | * defaults and the File is set to null. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 52 | * |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 53 | * <p> |
| 54 | * The C structure for a Tar Entry's header is: |
| 55 | * <pre> |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 56 | * struct header { |
| 57 | * char name[NAMSIZ]; |
| 58 | * char mode[8]; |
| 59 | * char uid[8]; |
| 60 | * char gid[8]; |
| 61 | * char size[12]; |
| 62 | * char mtime[12]; |
| 63 | * char chksum[8]; |
| 64 | * char linkflag; |
| 65 | * char linkname[NAMSIZ]; |
| 66 | * char magic[8]; |
| 67 | * char uname[TUNMLEN]; |
| 68 | * char gname[TGNMLEN]; |
| 69 | * char devmajor[8]; |
| 70 | * char devminor[8]; |
| 71 | * } header; |
| 72 | * </pre> |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 73 | * |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 74 | */ |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 75 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 76 | public class TarArchiveEntry implements TarConstants, ArchiveEntry { |
| 77 | /** The entry's name. */ |
| 78 | private StringBuffer name; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 79 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 80 | /** The entry's permission mode. */ |
| 81 | private int mode; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 82 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 83 | /** The entry's user id. */ |
| 84 | private int userId; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 85 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 86 | /** The entry's group id. */ |
| 87 | private int groupId; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 88 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 89 | /** The entry's size. */ |
| 90 | private long size; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 91 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 92 | /** The entry's modification time. */ |
| 93 | private long modTime; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 94 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 95 | /** The entry's link flag. */ |
| 96 | private byte linkFlag; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 97 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 98 | /** The entry's link name. */ |
| 99 | private StringBuffer linkName; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 100 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 101 | /** The entry's magic tag. */ |
| 102 | private StringBuffer magic; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 103 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 104 | /** The entry's user name. */ |
| 105 | private StringBuffer userName; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 106 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 107 | /** The entry's group name. */ |
| 108 | private StringBuffer groupName; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 109 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 110 | /** The entry's major device number. */ |
| 111 | private int devMajor; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 112 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 113 | /** The entry's minor device number. */ |
| 114 | private int devMinor; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 115 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 116 | /** The entry's file reference */ |
| 117 | private File file; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 118 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 119 | /** Maximum length of a user's name in the tar file */ |
| 120 | public static final int MAX_NAMELEN = 31; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 121 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 122 | /** Default permissions bits for directories */ |
| 123 | public static final int DEFAULT_DIR_MODE = 040755; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 124 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 125 | /** Default permissions bits for files */ |
| 126 | public static final int DEFAULT_FILE_MODE = 0100644; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 127 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 128 | /** Convert millis to seconds */ |
| 129 | public static final int MILLIS_PER_SECOND = 1000; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 130 | |
| 131 | /** |
| 132 | * Construct an empty entry and prepares the header values. |
| 133 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 134 | private TarArchiveEntry () { |
| 135 | this.magic = new StringBuffer(TMAGIC); |
| 136 | this.name = new StringBuffer(); |
| 137 | this.linkName = new StringBuffer(); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 138 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 139 | String user = System.getProperty("user.name", ""); |
| 140 | |
| 141 | if (user.length() > MAX_NAMELEN) { |
| 142 | user = user.substring(0, MAX_NAMELEN); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 143 | } |
| 144 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 145 | this.userId = 0; |
| 146 | this.groupId = 0; |
| 147 | this.userName = new StringBuffer(user); |
| 148 | this.groupName = new StringBuffer(""); |
| 149 | this.file = null; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 150 | } |
| 151 | |
| 152 | /** |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 153 | * Construct an entry with only a name. This allows the programmer |
| 154 | * to construct the entry's header "by hand". File is set to null. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 155 | * |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 156 | * @param name the entry name |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 157 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 158 | public TarArchiveEntry(String name) { |
| 159 | this(); |
| 160 | |
| 161 | boolean isDir = name.endsWith("/"); |
| 162 | |
| 163 | this.devMajor = 0; |
| 164 | this.devMinor = 0; |
| 165 | this.name = new StringBuffer(name); |
| 166 | this.mode = isDir ? DEFAULT_DIR_MODE : DEFAULT_FILE_MODE; |
| 167 | this.linkFlag = isDir ? LF_DIR : LF_NORMAL; |
| 168 | this.userId = 0; |
| 169 | this.groupId = 0; |
| 170 | this.size = 0; |
| 171 | this.modTime = (new Date()).getTime() / MILLIS_PER_SECOND; |
| 172 | this.linkName = new StringBuffer(""); |
| 173 | this.userName = new StringBuffer(""); |
| 174 | this.groupName = new StringBuffer(""); |
| 175 | this.devMajor = 0; |
| 176 | this.devMinor = 0; |
| 177 | |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 178 | } |
| 179 | |
| 180 | /** |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 181 | * Construct an entry with a name and a link flag. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 182 | * |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 183 | * @param name the entry name |
| 184 | * @param linkFlag the entry link flag. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 185 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 186 | public TarArchiveEntry(String name, byte linkFlag) { |
| 187 | this(name); |
| 188 | this.linkFlag = linkFlag; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 189 | } |
| 190 | |
| 191 | /** |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 192 | * Construct an entry for a file. File is set to file, and the |
| 193 | * header is constructed from information from the file. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 194 | * |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 195 | * @param file The file that the entry represents. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 196 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 197 | public TarArchiveEntry(File file) { |
| 198 | this(); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 199 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 200 | this.file = file; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 201 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 202 | String fileName = file.getPath(); |
| 203 | String osname = System.getProperty("os.name").toLowerCase(Locale.US); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 204 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 205 | if (osname != null) { |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 206 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 207 | // Strip off drive letters! |
| 208 | // REVIEW Would a better check be "(File.separator == '\')"? |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 209 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 210 | if (osname.startsWith("windows")) { |
| 211 | if (fileName.length() > 2) { |
| 212 | char ch1 = fileName.charAt(0); |
| 213 | char ch2 = fileName.charAt(1); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 214 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 215 | if (ch2 == ':' |
| 216 | && ((ch1 >= 'a' && ch1 <= 'z') |
| 217 | || (ch1 >= 'A' && ch1 <= 'Z'))) { |
| 218 | fileName = fileName.substring(2); |
| 219 | } |
| 220 | } |
| 221 | } else if (osname.indexOf("netware") > -1) { |
| 222 | int colon = fileName.indexOf(':'); |
| 223 | if (colon != -1) { |
| 224 | fileName = fileName.substring(colon + 1); |
| 225 | } |
| 226 | } |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 227 | } |
| 228 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 229 | fileName = fileName.replace(File.separatorChar, '/'); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 230 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 231 | // No absolute pathnames |
| 232 | // Windows (and Posix?) paths can start with "\\NetworkDrive\", |
| 233 | // so we loop on starting /'s. |
| 234 | while (fileName.startsWith("/")) { |
| 235 | fileName = fileName.substring(1); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 236 | } |
| 237 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 238 | this.linkName = new StringBuffer(""); |
| 239 | this.name = new StringBuffer(fileName); |
| 240 | |
| 241 | if (file.isDirectory()) { |
| 242 | this.mode = DEFAULT_DIR_MODE; |
| 243 | this.linkFlag = LF_DIR; |
| 244 | |
| 245 | if (this.name.charAt(this.name.length() - 1) != '/') { |
| 246 | this.name.append("/"); |
| 247 | } |
| 248 | } else { |
| 249 | this.mode = DEFAULT_FILE_MODE; |
| 250 | this.linkFlag = LF_NORMAL; |
| 251 | } |
| 252 | |
| 253 | this.size = file.length(); |
| 254 | this.modTime = file.lastModified() / MILLIS_PER_SECOND; |
| 255 | this.devMajor = 0; |
| 256 | this.devMinor = 0; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 257 | } |
| 258 | |
| 259 | /** |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 260 | * Construct an entry from an archive's header bytes. File is set |
| 261 | * to null. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 262 | * |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 263 | * @param headerBuf The header bytes from a tar archive entry. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 264 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 265 | public TarArchiveEntry(byte[] headerBuf) { |
| 266 | this(); |
| 267 | parseTarHeader(headerBuf); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 268 | } |
| 269 | |
| 270 | /** |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 271 | * Determine if the two entries are equal. Equality is determined |
| 272 | * by the header names being equal. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 273 | * |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 274 | * @param it Entry to be checked for equality. |
| 275 | * @return True if the entries are equal. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 276 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 277 | public boolean equals(TarArchiveEntry it) { |
| 278 | return getName().equals(it.getName()); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 279 | } |
| 280 | |
| 281 | /** |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 282 | * Determine if the two entries are equal. Equality is determined |
| 283 | * by the header names being equal. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 284 | * |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 285 | * @param it Entry to be checked for equality. |
| 286 | * @return True if the entries are equal. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 287 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 288 | public boolean equals(Object it) { |
| 289 | if (it == null || getClass() != it.getClass()) { |
| 290 | return false; |
| 291 | } |
| 292 | return equals((TarArchiveEntry) it); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 293 | } |
| 294 | |
| 295 | /** |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 296 | * Hashcodes are based on entry names. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 297 | * |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 298 | * @return the entry hashcode |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 299 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 300 | public int hashCode() { |
| 301 | return getName().hashCode(); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | /** |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 305 | * Determine if the given entry is a descendant of this entry. |
| 306 | * Descendancy is determined by the name of the descendant |
| 307 | * starting with this entry's name. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 308 | * |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 309 | * @param desc Entry to be checked as a descendent of this. |
| 310 | * @return True if entry is a descendant of this. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 311 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 312 | public boolean isDescendent(TarArchiveEntry desc) { |
| 313 | return desc.getName().startsWith(getName()); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | /** |
| 317 | * Get this entry's name. |
| 318 | * |
| 319 | * @return This entry's name. |
| 320 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 321 | public String getName() { |
| 322 | return name.toString(); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 323 | } |
| 324 | |
| 325 | /** |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 326 | * Set this entry's name. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 327 | * |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 328 | * @param name This entry's new name. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 329 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 330 | public void setName(String name) { |
| 331 | this.name = new StringBuffer(name); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 332 | } |
| 333 | |
| 334 | /** |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 335 | * Set the mode for this entry |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 336 | * |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 337 | * @param mode the mode for this entry |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 338 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 339 | public void setMode(int mode) { |
| 340 | this.mode = mode; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 341 | } |
| 342 | |
| 343 | /** |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 344 | * Get this entry's link name. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 345 | * |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 346 | * @return This entry's link name. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 347 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 348 | public String getLinkName() { |
| 349 | return linkName.toString(); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 350 | } |
| 351 | |
| 352 | /** |
| 353 | * Get this entry's user id. |
| 354 | * |
| 355 | * @return This entry's user id. |
| 356 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 357 | public int getUserId() { |
| 358 | return userId; |
| 359 | } |
| 360 | |
| 361 | /** |
| 362 | * Set this entry's user id. |
| 363 | * |
| 364 | * @param userId This entry's new user id. |
| 365 | */ |
| 366 | public void setUserId(int userId) { |
| 367 | this.userId = userId; |
| 368 | } |
| 369 | |
| 370 | /** |
| 371 | * Get this entry's group id. |
| 372 | * |
| 373 | * @return This entry's group id. |
| 374 | */ |
| 375 | public int getGroupId() { |
| 376 | return groupId; |
| 377 | } |
| 378 | |
| 379 | /** |
| 380 | * Set this entry's group id. |
| 381 | * |
| 382 | * @param groupId This entry's new group id. |
| 383 | */ |
| 384 | public void setGroupId(int groupId) { |
| 385 | this.groupId = groupId; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 386 | } |
| 387 | |
| 388 | /** |
| 389 | * Get this entry's user name. |
| 390 | * |
| 391 | * @return This entry's user name. |
| 392 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 393 | public String getUserName() { |
| 394 | return userName.toString(); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 395 | } |
| 396 | |
| 397 | /** |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 398 | * Set this entry's user name. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 399 | * |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 400 | * @param userName This entry's new user name. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 401 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 402 | public void setUserName(String userName) { |
| 403 | this.userName = new StringBuffer(userName); |
| 404 | } |
| 405 | |
| 406 | /** |
| 407 | * Get this entry's group name. |
| 408 | * |
| 409 | * @return This entry's group name. |
| 410 | */ |
| 411 | public String getGroupName() { |
| 412 | return groupName.toString(); |
| 413 | } |
| 414 | |
| 415 | /** |
| 416 | * Set this entry's group name. |
| 417 | * |
| 418 | * @param groupName This entry's new group name. |
| 419 | */ |
| 420 | public void setGroupName(String groupName) { |
| 421 | this.groupName = new StringBuffer(groupName); |
| 422 | } |
| 423 | |
| 424 | /** |
| 425 | * Convenience method to set this entry's group and user ids. |
| 426 | * |
| 427 | * @param userId This entry's new user id. |
| 428 | * @param groupId This entry's new group id. |
| 429 | */ |
| 430 | public void setIds(int userId, int groupId) { |
| 431 | setUserId(userId); |
| 432 | setGroupId(groupId); |
| 433 | } |
| 434 | |
| 435 | /** |
| 436 | * Convenience method to set this entry's group and user names. |
| 437 | * |
| 438 | * @param userName This entry's new user name. |
| 439 | * @param groupName This entry's new group name. |
| 440 | */ |
| 441 | public void setNames(String userName, String groupName) { |
| 442 | setUserName(userName); |
| 443 | setGroupName(groupName); |
| 444 | } |
| 445 | |
| 446 | /** |
| 447 | * Set this entry's modification time. The parameter passed |
| 448 | * to this method is in "Java time". |
| 449 | * |
| 450 | * @param time This entry's new modification time. |
| 451 | */ |
| 452 | public void setModTime(long time) { |
| 453 | modTime = time / MILLIS_PER_SECOND; |
| 454 | } |
| 455 | |
| 456 | /** |
| 457 | * Set this entry's modification time. |
| 458 | * |
| 459 | * @param time This entry's new modification time. |
| 460 | */ |
| 461 | public void setModTime(Date time) { |
| 462 | modTime = time.getTime() / MILLIS_PER_SECOND; |
| 463 | } |
| 464 | |
| 465 | /** |
| 466 | * Set this entry's modification time. |
| 467 | * |
| 468 | * @return time This entry's new modification time. |
| 469 | */ |
| 470 | public Date getModTime() { |
| 471 | return new Date(modTime * MILLIS_PER_SECOND); |
| 472 | } |
| 473 | |
| 474 | /** |
| 475 | * Get this entry's file. |
| 476 | * |
| 477 | * @return This entry's file. |
| 478 | */ |
| 479 | public File getFile() { |
| 480 | return file; |
| 481 | } |
| 482 | |
| 483 | /** |
| 484 | * Get this entry's mode. |
| 485 | * |
| 486 | * @return This entry's mode. |
| 487 | */ |
| 488 | public int getMode() { |
| 489 | return mode; |
| 490 | } |
| 491 | |
| 492 | /** |
| 493 | * Get this entry's file size. |
| 494 | * |
| 495 | * @return This entry's file size. |
| 496 | */ |
| 497 | public long getSize() { |
| 498 | return size; |
| 499 | } |
| 500 | |
| 501 | /** |
| 502 | * Set this entry's file size. |
| 503 | * |
| 504 | * @param size This entry's new file size. |
| 505 | */ |
| 506 | public void setSize(long size) { |
| 507 | this.size = size; |
| 508 | } |
| 509 | |
| 510 | |
| 511 | /** |
| 512 | * Indicate if this entry is a GNU long name block |
| 513 | * |
| 514 | * @return true if this is a long name extension provided by GNU tar |
| 515 | */ |
| 516 | public boolean isGNULongNameEntry() { |
| 517 | return linkFlag == LF_GNUTYPE_LONGNAME |
| 518 | && name.toString().equals(GNU_LONGLINK); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 519 | } |
| 520 | |
| 521 | /** |
| 522 | * Return whether or not this entry represents a directory. |
| 523 | * |
| 524 | * @return True if this entry is a directory. |
| 525 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 526 | public boolean isDirectory() { |
| 527 | if (file != null) { |
| 528 | return file.isDirectory(); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 529 | } |
| 530 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 531 | if (linkFlag == LF_DIR) { |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 532 | return true; |
| 533 | } |
| 534 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 535 | if (getName().endsWith("/")) { |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 536 | return true; |
| 537 | } |
| 538 | |
| 539 | return false; |
| 540 | } |
| 541 | |
| 542 | /** |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 543 | * If this entry represents a file, and the file is a directory, return |
| 544 | * an array of TarEntries for this entry's children. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 545 | * |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 546 | * @return An array of TarEntry's for this entry's children. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 547 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 548 | public TarArchiveEntry[] getDirectoryEntries() { |
| 549 | if (file == null || !file.isDirectory()) { |
| 550 | return new TarArchiveEntry[0]; |
| 551 | } |
| 552 | |
| 553 | String[] list = file.list(); |
| 554 | TarArchiveEntry[] result = new TarArchiveEntry[list.length]; |
| 555 | |
| 556 | for (int i = 0; i < list.length; ++i) { |
| 557 | result[i] = new TarArchiveEntry(new File(file, list[i])); |
| 558 | } |
| 559 | |
| 560 | return result; |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 561 | } |
| 562 | |
| 563 | /** |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 564 | * Write an entry's header information to a header buffer. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 565 | * |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 566 | * @param outbuf The tar entry header buffer to fill in. |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 567 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 568 | public void writeEntryHeader(byte[] outbuf) { |
| 569 | int offset = 0; |
| 570 | |
| 571 | offset = TarUtils.getNameBytes(name, outbuf, offset, NAMELEN); |
| 572 | offset = TarUtils.getOctalBytes(mode, outbuf, offset, MODELEN); |
| 573 | offset = TarUtils.getOctalBytes(userId, outbuf, offset, UIDLEN); |
| 574 | offset = TarUtils.getOctalBytes(groupId, outbuf, offset, GIDLEN); |
| 575 | offset = TarUtils.getLongOctalBytes(size, outbuf, offset, SIZELEN); |
| 576 | offset = TarUtils.getLongOctalBytes(modTime, outbuf, offset, MODTIMELEN); |
| 577 | |
| 578 | int csOffset = offset; |
| 579 | |
| 580 | for (int c = 0; c < CHKSUMLEN; ++c) { |
| 581 | outbuf[offset++] = (byte) ' '; |
| 582 | } |
| 583 | |
| 584 | outbuf[offset++] = linkFlag; |
| 585 | offset = TarUtils.getNameBytes(linkName, outbuf, offset, NAMELEN); |
| 586 | offset = TarUtils.getNameBytes(magic, outbuf, offset, MAGICLEN); |
| 587 | offset = TarUtils.getNameBytes(userName, outbuf, offset, UNAMELEN); |
| 588 | offset = TarUtils.getNameBytes(groupName, outbuf, offset, GNAMELEN); |
| 589 | offset = TarUtils.getOctalBytes(devMajor, outbuf, offset, DEVLEN); |
| 590 | offset = TarUtils.getOctalBytes(devMinor, outbuf, offset, DEVLEN); |
| 591 | |
| 592 | while (offset < outbuf.length) { |
| 593 | outbuf[offset++] = 0; |
| 594 | } |
| 595 | |
| 596 | long chk = TarUtils.computeCheckSum(outbuf); |
| 597 | |
| 598 | TarUtils.getCheckSumOctalBytes(chk, outbuf, csOffset, CHKSUMLEN); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 599 | } |
| 600 | |
| 601 | /** |
| 602 | * Parse an entry's header information from a header buffer. |
| 603 | * |
| 604 | * @param header The tar entry header buffer to get information from. |
| 605 | */ |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 606 | public void parseTarHeader(byte[] header) { |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 607 | int offset = 0; |
| 608 | |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 609 | name = TarUtils.parseName(header, offset, NAMELEN); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 610 | offset += NAMELEN; |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 611 | mode = (int) TarUtils.parseOctal(header, offset, MODELEN); |
| 612 | offset += MODELEN; |
| 613 | userId = (int) TarUtils.parseOctal(header, offset, UIDLEN); |
| 614 | offset += UIDLEN; |
| 615 | groupId = (int) TarUtils.parseOctal(header, offset, GIDLEN); |
| 616 | offset += GIDLEN; |
| 617 | size = TarUtils.parseOctal(header, offset, SIZELEN); |
| 618 | offset += SIZELEN; |
| 619 | modTime = TarUtils.parseOctal(header, offset, MODTIMELEN); |
| 620 | offset += MODTIMELEN; |
| 621 | offset += CHKSUMLEN; |
| 622 | linkFlag = header[offset++]; |
| 623 | linkName = TarUtils.parseName(header, offset, NAMELEN); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 624 | offset += NAMELEN; |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 625 | magic = TarUtils.parseName(header, offset, MAGICLEN); |
| 626 | offset += MAGICLEN; |
| 627 | userName = TarUtils.parseName(header, offset, UNAMELEN); |
| 628 | offset += UNAMELEN; |
| 629 | groupName = TarUtils.parseName(header, offset, GNAMELEN); |
| 630 | offset += GNAMELEN; |
| 631 | devMajor = (int) TarUtils.parseOctal(header, offset, DEVLEN); |
| 632 | offset += DEVLEN; |
| 633 | devMinor = (int) TarUtils.parseOctal(header, offset, DEVLEN); |
Torsten Curdt | ca16539 | 2008-07-10 10:17:44 +0000 | [diff] [blame] | 634 | } |
| 635 | } |
Torsten Curdt | 46ad24d | 2009-01-08 11:09:25 +0000 | [diff] [blame^] | 636 | |