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Diffstat (limited to 'framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/zip/AsiExtraField.java')
| -rw-r--r-- | framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/zip/AsiExtraField.java | 352 |
1 files changed, 0 insertions, 352 deletions
diff --git a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/zip/AsiExtraField.java b/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/zip/AsiExtraField.java deleted file mode 100644 index d2ca6910..00000000 --- a/framework/src/ant/apache-ant-1.9.6/src/main/org/apache/tools/zip/AsiExtraField.java +++ /dev/null @@ -1,352 +0,0 @@ -/* - * 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.zip; - -import java.util.zip.CRC32; -import java.util.zip.ZipException; - -/** - * Adds Unix file permission and UID/GID fields as well as symbolic - * link handling. - * - * <p>This class uses the ASi extra field in the format: - * <pre> - * Value Size Description - * ----- ---- ----------- - * (Unix3) 0x756e Short tag for this extra block type - * TSize Short total data size for this block - * CRC Long CRC-32 of the remaining data - * Mode Short file permissions - * SizDev Long symlink'd size OR major/minor dev num - * UID Short user ID - * GID Short group ID - * (var.) variable symbolic link filename - * </pre> - * taken from appnote.iz (Info-ZIP note, 981119) found at <a - * href="ftp://ftp.uu.net/pub/archiving/zip/doc/">ftp://ftp.uu.net/pub/archiving/zip/doc/</a></p> - - * - * <p>Short is two bytes and Long is four bytes in big endian byte and - * word order, device numbers are currently not supported.</p> - * - * <p>Since the documentation this class is based upon doesn't mention - * the character encoding of the file name at all, it is assumed that - * it uses the current platform's default encoding.</p> - */ -public class AsiExtraField implements ZipExtraField, UnixStat, Cloneable { - - private static final ZipShort HEADER_ID = new ZipShort(0x756E); - private static final int WORD = 4; - /** - * Standard Unix stat(2) file mode. - * - * @since 1.1 - */ - private int mode = 0; - /** - * User ID. - * - * @since 1.1 - */ - private int uid = 0; - /** - * Group ID. - * - * @since 1.1 - */ - private int gid = 0; - /** - * File this entry points to, if it is a symbolic link. - * - * <p>empty string - if entry is not a symbolic link.</p> - * - * @since 1.1 - */ - private String link = ""; - /** - * Is this an entry for a directory? - * - * @since 1.1 - */ - private boolean dirFlag = false; - - /** - * Instance used to calculate checksums. - * - * @since 1.1 - */ - private CRC32 crc = new CRC32(); - - /** Constructor for AsiExtraField. */ - public AsiExtraField() { - } - - /** - * The Header-ID. - * @return the value for the header id for this extrafield - * @since 1.1 - */ - public ZipShort getHeaderId() { - return HEADER_ID; - } - - /** - * Length of the extra field in the local file data - without - * Header-ID or length specifier. - * @return a <code>ZipShort</code> for the length of the data of this extra field - * @since 1.1 - */ - public ZipShort getLocalFileDataLength() { - return new ZipShort(WORD // CRC - + 2 // Mode - + WORD // SizDev - + 2 // UID - + 2 // GID - + getLinkedFile().getBytes().length); - // Uses default charset - see class Javadoc - } - - /** - * Delegate to local file data. - * @return the centralDirectory length - * @since 1.1 - */ - public ZipShort getCentralDirectoryLength() { - return getLocalFileDataLength(); - } - - /** - * The actual data to put into local file data - without Header-ID - * or length specifier. - * @return get the data - * @since 1.1 - */ - public byte[] getLocalFileDataData() { - // CRC will be added later - byte[] data = new byte[getLocalFileDataLength().getValue() - WORD]; - System.arraycopy(ZipShort.getBytes(getMode()), 0, data, 0, 2); - - byte[] linkArray = getLinkedFile().getBytes(); // Uses default charset - see class Javadoc - // CheckStyle:MagicNumber OFF - System.arraycopy(ZipLong.getBytes(linkArray.length), - 0, data, 2, WORD); - - System.arraycopy(ZipShort.getBytes(getUserId()), - 0, data, 6, 2); - System.arraycopy(ZipShort.getBytes(getGroupId()), - 0, data, 8, 2); - - System.arraycopy(linkArray, 0, data, 10, linkArray.length); - // CheckStyle:MagicNumber ON - - crc.reset(); - crc.update(data); - long checksum = crc.getValue(); - - byte[] result = new byte[data.length + WORD]; - System.arraycopy(ZipLong.getBytes(checksum), 0, result, 0, WORD); - System.arraycopy(data, 0, result, WORD, data.length); - return result; - } - - /** - * Delegate to local file data. - * @return the local file data - * @since 1.1 - */ - public byte[] getCentralDirectoryData() { - return getLocalFileDataData(); - } - - /** - * Set the user id. - * @param uid the user id - * @since 1.1 - */ - public void setUserId(int uid) { - this.uid = uid; - } - - /** - * Get the user id. - * @return the user id - * @since 1.1 - */ - public int getUserId() { - return uid; - } - - /** - * Set the group id. - * @param gid the group id - * @since 1.1 - */ - public void setGroupId(int gid) { - this.gid = gid; - } - - /** - * Get the group id. - * @return the group id - * @since 1.1 - */ - public int getGroupId() { - return gid; - } - - /** - * Indicate that this entry is a symbolic link to the given filename. - * - * @param name Name of the file this entry links to, empty String - * if it is not a symbolic link. - * - * @since 1.1 - */ - public void setLinkedFile(String name) { - link = name; - mode = getMode(mode); - } - - /** - * Name of linked file - * - * @return name of the file this entry links to if it is a - * symbolic link, the empty string otherwise. - * - * @since 1.1 - */ - public String getLinkedFile() { - return link; - } - - /** - * Is this entry a symbolic link? - * @return true if this is a symbolic link - * @since 1.1 - */ - public boolean isLink() { - return getLinkedFile().length() != 0; - } - - /** - * File mode of this file. - * @param mode the file mode - * @since 1.1 - */ - public void setMode(int mode) { - this.mode = getMode(mode); - } - - /** - * File mode of this file. - * @return the file mode - * @since 1.1 - */ - public int getMode() { - return mode; - } - - /** - * Indicate whether this entry is a directory. - * @param dirFlag if true, this entry is a directory - * @since 1.1 - */ - public void setDirectory(boolean dirFlag) { - this.dirFlag = dirFlag; - mode = getMode(mode); - } - - /** - * Is this entry a directory? - * @return true if this entry is a directory - * @since 1.1 - */ - public boolean isDirectory() { - return dirFlag && !isLink(); - } - - /** - * Populate data from this array as if it was in local file data. - * @param data an array of bytes - * @param offset the start offset - * @param length the number of bytes in the array from offset - * @since 1.1 - * @throws ZipException on error - */ - public void parseFromLocalFileData(byte[] data, int offset, int length) - throws ZipException { - - long givenChecksum = ZipLong.getValue(data, offset); - byte[] tmp = new byte[length - WORD]; - System.arraycopy(data, offset + WORD, tmp, 0, length - WORD); - crc.reset(); - crc.update(tmp); - long realChecksum = crc.getValue(); - if (givenChecksum != realChecksum) { - throw new ZipException("bad CRC checksum " - + Long.toHexString(givenChecksum) - + " instead of " - + Long.toHexString(realChecksum)); - } - - int newMode = ZipShort.getValue(tmp, 0); - // CheckStyle:MagicNumber OFF - byte[] linkArray = new byte[(int) ZipLong.getValue(tmp, 2)]; - uid = ZipShort.getValue(tmp, 6); - gid = ZipShort.getValue(tmp, 8); - - if (linkArray.length == 0) { - link = ""; - } else { - System.arraycopy(tmp, 10, linkArray, 0, linkArray.length); - link = new String(linkArray); // Uses default charset - see class Javadoc - } - // CheckStyle:MagicNumber ON - setDirectory((newMode & DIR_FLAG) != 0); - setMode(newMode); - } - - /** - * Get the file mode for given permissions with the correct file type. - * @param mode the mode - * @return the type with the mode - * @since 1.1 - */ - protected int getMode(int mode) { - int type = FILE_FLAG; - if (isLink()) { - type = LINK_FLAG; - } else if (isDirectory()) { - type = DIR_FLAG; - } - return type | (mode & PERM_MASK); - } - - @Override - public Object clone() { - try { - AsiExtraField cloned = (AsiExtraField) super.clone(); - cloned.crc = new CRC32(); - return cloned; - } catch (CloneNotSupportedException cnfe) { - // impossible - throw new RuntimeException(cnfe); - } - } -} |