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/*
* 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 com.feilong.lib.compress.archivers.zip;
import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Date;
import java.util.List;
import java.util.zip.ZipException;
import com.feilong.lib.compress.archivers.ArchiveEntry;
import com.feilong.lib.compress.archivers.EntryStreamOffsets;
/**
* Extension that adds better handling of extra fields and provides
* access to the internal and external file attributes.
*
*
* The extra data is expected to follow the recommendation of
* APPNOTE.TXT:
*
*
* - the extra byte array consists of a sequence of extra fields
* - each extra fields starts by a two byte header id followed by
* a two byte sequence holding the length of the remainder of
* data.
*
*
*
* Any extra data that cannot be parsed by the rules above will be
* consumed as "unparseable" extra data and treated differently by the
* methods of this class. Versions prior to Apache Commons Compress
* 1.1 would have thrown an exception if any attempt was made to read
* or write extra data not conforming to the recommendation.
*
*
* @NotThreadSafe
*/
public class ZipArchiveEntry extends java.util.zip.ZipEntry implements ArchiveEntry,EntryStreamOffsets{
public static final int PLATFORM_UNIX = 3;
public static final int PLATFORM_FAT = 0;
public static final int CRC_UNKNOWN = -1;
private static final int SHORT_MASK = 0xFFFF;
private static final int SHORT_SHIFT = 16;
private static final byte[] EMPTY = new byte[0];
/**
* Indicates how the name of this entry has been determined.
*
* @since 1.16
*/
public enum NameSource{
/**
* The name has been read from the archive using the encoding
* of the archive specified when creating the {@link
* ZipArchiveInputStream} or {@link ZipFile} (defaults to the
* platform's default encoding).
*/
NAME,
/**
* The name has been read from the archive and the archive
* specified the EFS flag which indicates the name has been
* encoded as UTF-8.
*/
NAME_WITH_EFS_FLAG,
/**
* The name has been read from an {@link UnicodePathExtraField
* Unicode Extra Field}.
*/
UNICODE_EXTRA_FIELD
}
/**
* Indicates how the comment of this entry has been determined.
*
* @since 1.16
*/
public enum CommentSource{
/**
* The comment has been read from the archive using the encoding
* of the archive specified when creating the {@link
* ZipArchiveInputStream} or {@link ZipFile} (defaults to the
* platform's default encoding).
*/
COMMENT,
/**
* The comment has been read from an {@link UnicodeCommentExtraField
* Unicode Extra Field}.
*/
UNICODE_EXTRA_FIELD
}
/**
* The {@link java.util.zip.ZipEntry} base class only supports
* the compression methods STORED and DEFLATED. We override the
* field so that any compression methods can be used.
*
* The default value -1 means that the method has not been specified.
*
* @see COMPRESS-93
*/
private int method = ZipMethod.UNKNOWN_CODE;
/**
* The {@link java.util.zip.ZipEntry#setSize} method in the base
* class throws an IllegalArgumentException if the size is bigger
* than 2GB for Java versions < 7 and even in Java 7+ if the
* implementation in java.util.zip doesn't support Zip64 itself
* (it is an optional feature).
*
*
* We need to keep our own size information for Zip64 support.
*
*/
private long size = SIZE_UNKNOWN;
private int internalAttributes = 0;
private int versionRequired;
private int versionMadeBy;
private int platform = PLATFORM_FAT;
private int rawFlag;
private long externalAttributes = 0;
private int alignment = 0;
private ZipExtraField[] extraFields;
private UnparseableExtraFieldData unparseableExtra = null;
private String name = null;
private byte[] rawName = null;
private GeneralPurposeBit gpb = new GeneralPurposeBit();
private static final ZipExtraField[] noExtraFields = new ZipExtraField[0];
private long localHeaderOffset = OFFSET_UNKNOWN;
private long dataOffset = OFFSET_UNKNOWN;
private boolean isStreamContiguous = false;
private NameSource nameSource = NameSource.NAME;
private CommentSource commentSource = CommentSource.COMMENT;
private long diskNumberStart;
/**
* Creates a new zip entry with the specified name.
*
*
* Assumes the entry represents a directory if and only if the
* name ends with a forward slash "/".
*
*
* @param name
* the name of the entry
*/
public ZipArchiveEntry(final String name){
super(name);
setName(name);
}
/**
* Creates a new zip entry with fields taken from the specified zip entry.
*
*
* Assumes the entry represents a directory if and only if the
* name ends with a forward slash "/".
*
*
* @param entry
* the entry to get fields from
* @throws ZipException
* on error
*/
public ZipArchiveEntry(final java.util.zip.ZipEntry entry) throws ZipException{
super(entry);
setName(entry.getName());
final byte[] extra = entry.getExtra();
if (extra != null){
setExtraFields(ExtraFieldUtils.parse(extra, true, ExtraFieldParsingMode.BEST_EFFORT));
}else{
// initializes extra data to an empty byte array
setExtra();
}
setMethod(entry.getMethod());
this.size = entry.getSize();
}
/**
* Creates a new zip entry with fields taken from the specified zip entry.
*
*
* Assumes the entry represents a directory if and only if the
* name ends with a forward slash "/".
*
*
* @param entry
* the entry to get fields from
* @throws ZipException
* on error
*/
public ZipArchiveEntry(final ZipArchiveEntry entry) throws ZipException{
this((java.util.zip.ZipEntry) entry);
setInternalAttributes(entry.getInternalAttributes());
setExternalAttributes(entry.getExternalAttributes());
setExtraFields(getAllExtraFieldsNoCopy());
setPlatform(entry.getPlatform());
final GeneralPurposeBit other = entry.getGeneralPurposeBit();
setGeneralPurposeBit(other == null ? null : (GeneralPurposeBit) other.clone());
}
/**
*/
protected ZipArchiveEntry(){
this("");
}
/**
* Creates a new zip entry taking some information from the given
* file and using the provided name.
*
*
* The name will be adjusted to end with a forward slash "/" if
* the file is a directory. If the file is not a directory a
* potential trailing forward slash will be stripped from the
* entry name.
*
*
* @param inputFile
* file to create the entry from
* @param entryName
* name of the entry
*/
public ZipArchiveEntry(final File inputFile, final String entryName){
this(inputFile.isDirectory() && !entryName.endsWith("/") ? entryName + "/" : entryName);
if (inputFile.isFile()){
setSize(inputFile.length());
}
setTime(inputFile.lastModified());
// TODO are there any other fields we can set here?
}
/**
* Overwrite clone.
*
* @return a cloned copy of this ZipArchiveEntry
*/
@Override
public Object clone(){
final ZipArchiveEntry e = (ZipArchiveEntry) super.clone();
e.setInternalAttributes(getInternalAttributes());
e.setExternalAttributes(getExternalAttributes());
e.setExtraFields(getAllExtraFieldsNoCopy());
return e;
}
/**
* Returns the compression method of this entry, or -1 if the
* compression method has not been specified.
*
* @return compression method
*
* @since 1.1
*/
@Override
public int getMethod(){
return method;
}
/**
* Sets the compression method of this entry.
*
* @param method
* compression method
*
* @since 1.1
*/
@Override
public void setMethod(final int method){
if (method < 0){
throw new IllegalArgumentException("ZIP compression method can not be negative: " + method);
}
this.method = method;
}
/**
* Retrieves the internal file attributes.
*
*
* Note: {@link ZipArchiveInputStream} is unable to fill
* this field, you must use {@link ZipFile} if you want to read
* entries using this attribute.
*
*
* @return the internal file attributes
*/
public int getInternalAttributes(){
return internalAttributes;
}
/**
* Sets the internal file attributes.
*
* @param value
* an int
value
*/
public void setInternalAttributes(final int value){
internalAttributes = value;
}
/**
* Retrieves the external file attributes.
*
*
* Note: {@link ZipArchiveInputStream} is unable to fill
* this field, you must use {@link ZipFile} if you want to read
* entries using this attribute.
*
*
* @return the external file attributes
*/
public long getExternalAttributes(){
return externalAttributes;
}
/**
* Sets the external file attributes.
*
* @param value
* an long
value
*/
public void setExternalAttributes(final long value){
externalAttributes = value;
}
/**
* Sets Unix permissions in a way that is understood by Info-Zip's
* unzip command.
*
* @param mode
* an int
value
*/
public void setUnixMode(final int mode){
// CheckStyle:MagicNumberCheck OFF - no point
setExternalAttributes(
(mode << SHORT_SHIFT)
// MS-DOS read-only attribute
| ((mode & 0200) == 0 ? 1 : 0)
// MS-DOS directory flag
| (isDirectory() ? 0x10 : 0));
// CheckStyle:MagicNumberCheck ON
platform = PLATFORM_UNIX;
}
/**
* Unix permission.
*
* @return the unix permissions
*/
public int getUnixMode(){
return platform != PLATFORM_UNIX ? 0 : (int) ((getExternalAttributes() >> SHORT_SHIFT) & SHORT_MASK);
}
/**
* Returns true if this entry represents a unix symlink,
* in which case the entry's content contains the target path
* for the symlink.
*
* @since 1.5
* @return true if the entry represents a unix symlink, false otherwise.
*/
public boolean isUnixSymlink(){
return (getUnixMode() & UnixStat.FILE_TYPE_FLAG) == UnixStat.LINK_FLAG;
}
/**
* Platform specification to put into the "version made
* by" part of the central file header.
*
* @return PLATFORM_FAT unless {@link #setUnixMode setUnixMode}
* has been called, in which case PLATFORM_UNIX will be returned.
*/
public int getPlatform(){
return platform;
}
/**
* Set the platform (UNIX or FAT).
*
* @param platform
* an int
value - 0 is FAT, 3 is UNIX
*/
protected void setPlatform(final int platform){
this.platform = platform;
}
/**
* Gets currently configured alignment.
*
* @return
* alignment for this entry.
* @since 1.14
*/
protected int getAlignment(){
return this.alignment;
}
/**
* Sets alignment for this entry.
*
* @param alignment
* requested alignment, 0 for default.
* @since 1.14
*/
public void setAlignment(int alignment){
if ((alignment & (alignment - 1)) != 0 || alignment > 0xffff){
throw new IllegalArgumentException(
"Invalid value for alignment, must be power of two and no bigger than " + 0xffff + " but is " + alignment);
}
this.alignment = alignment;
}
/**
* Replaces all currently attached extra fields with the new array.
*
* @param fields
* an array of extra fields
*/
public void setExtraFields(final ZipExtraField[] fields){
unparseableExtra = null;
final List newFields = new ArrayList<>();
if (fields != null){
for (final ZipExtraField field : fields){
if (field instanceof UnparseableExtraFieldData){
unparseableExtra = (UnparseableExtraFieldData) field;
}else{
newFields.add(field);
}
}
}
extraFields = newFields.toArray(noExtraFields);
setExtra();
}
/**
* Retrieves all extra fields that have been parsed successfully.
*
*
* Note: The set of extra fields may be incomplete when
* {@link ZipArchiveInputStream} has been used as some extra
* fields use the central directory to store additional
* information.
*
*
* @return an array of the extra fields
*/
public ZipExtraField[] getExtraFields(){
return getParseableExtraFields();
}
/**
* Retrieves extra fields.
*
* @param includeUnparseable
* whether to also return unparseable
* extra fields as {@link UnparseableExtraFieldData} if such data
* exists.
* @return an array of the extra fields
*
* @since 1.1
*/
public ZipExtraField[] getExtraFields(final boolean includeUnparseable){
return includeUnparseable ? getAllExtraFields() : getParseableExtraFields();
}
/**
* Retrieves extra fields.
*
* @param parsingBehavior
* controls parsing of extra fields.
* @return an array of the extra fields
*
* @throws ZipException
* if parsing fails, can not happen if {@code
* parsingBehavior} is {@link ExtraFieldParsingMode#BEST_EFFORT}.
*
* @since 1.19
*/
public ZipExtraField[] getExtraFields(final ExtraFieldParsingBehavior parsingBehavior) throws ZipException{
if (parsingBehavior == ExtraFieldParsingMode.BEST_EFFORT){
return getExtraFields(true);
}
if (parsingBehavior == ExtraFieldParsingMode.ONLY_PARSEABLE_LENIENT){
return getExtraFields(false);
}
byte[] local = getExtra();
List localFields = new ArrayList<>(Arrays.asList(ExtraFieldUtils.parse(local, true, parsingBehavior)));
byte[] central = getCentralDirectoryExtra();
List centralFields = new ArrayList<>(Arrays.asList(ExtraFieldUtils.parse(central, false, parsingBehavior)));
List merged = new ArrayList<>();
for (ZipExtraField l : localFields){
ZipExtraField c = null;
if (l instanceof UnparseableExtraFieldData){
c = findUnparseable(centralFields);
}else{
c = findMatching(l.getHeaderId(), centralFields);
}
if (c != null){
byte[] cd = c.getCentralDirectoryData();
if (cd != null && cd.length > 0){
l.parseFromCentralDirectoryData(cd, 0, cd.length);
}
centralFields.remove(c);
}
merged.add(l);
}
merged.addAll(centralFields);
return merged.toArray(noExtraFields);
}
private ZipExtraField[] getParseableExtraFieldsNoCopy(){
if (extraFields == null){
return noExtraFields;
}
return extraFields;
}
private ZipExtraField[] getParseableExtraFields(){
final ZipExtraField[] parseableExtraFields = getParseableExtraFieldsNoCopy();
return (parseableExtraFields == extraFields) ? copyOf(parseableExtraFields, parseableExtraFields.length) : parseableExtraFields;
}
/**
* Get all extra fields, including unparseable ones.
*
* @return An array of all extra fields. Not necessarily a copy of internal data structures, hence private method
*/
private ZipExtraField[] getAllExtraFieldsNoCopy(){
if (extraFields == null){
return getUnparseableOnly();
}
return unparseableExtra != null ? getMergedFields() : extraFields;
}
private ZipExtraField[] getMergedFields(){
final ZipExtraField[] zipExtraFields = copyOf(extraFields, extraFields.length + 1);
zipExtraFields[extraFields.length] = unparseableExtra;
return zipExtraFields;
}
private ZipExtraField[] getUnparseableOnly(){
return unparseableExtra == null ? noExtraFields : new ZipExtraField[] { unparseableExtra };
}
private ZipExtraField[] getAllExtraFields(){
final ZipExtraField[] allExtraFieldsNoCopy = getAllExtraFieldsNoCopy();
return (allExtraFieldsNoCopy == extraFields) ? copyOf(allExtraFieldsNoCopy, allExtraFieldsNoCopy.length) : allExtraFieldsNoCopy;
}
private ZipExtraField findUnparseable(List fs){
for (ZipExtraField f : fs){
if (f instanceof UnparseableExtraFieldData){
return f;
}
}
return null;
}
private ZipExtraField findMatching(ZipShort headerId,List fs){
for (ZipExtraField f : fs){
if (headerId.equals(f.getHeaderId())){
return f;
}
}
return null;
}
/**
* Adds an extra field - replacing an already present extra field
* of the same type.
*
*
* If no extra field of the same type exists, the field will be
* added as last field.
*
*
* @param ze
* an extra field
*/
public void addExtraField(final ZipExtraField ze){
if (ze instanceof UnparseableExtraFieldData){
unparseableExtra = (UnparseableExtraFieldData) ze;
}else{
if (extraFields == null){
extraFields = new ZipExtraField[] { ze };
}else{
if (getExtraField(ze.getHeaderId()) != null){
removeExtraField(ze.getHeaderId());
}
final ZipExtraField[] zipExtraFields = copyOf(extraFields, extraFields.length + 1);
zipExtraFields[zipExtraFields.length - 1] = ze;
extraFields = zipExtraFields;
}
}
setExtra();
}
/**
* Adds an extra field - replacing an already present extra field
* of the same type.
*
*
* The new extra field will be the first one.
*
*
* @param ze
* an extra field
*/
public void addAsFirstExtraField(final ZipExtraField ze){
if (ze instanceof UnparseableExtraFieldData){
unparseableExtra = (UnparseableExtraFieldData) ze;
}else{
if (getExtraField(ze.getHeaderId()) != null){
removeExtraField(ze.getHeaderId());
}
final ZipExtraField[] copy = extraFields;
final int newLen = extraFields != null ? extraFields.length + 1 : 1;
extraFields = new ZipExtraField[newLen];
extraFields[0] = ze;
if (copy != null){
System.arraycopy(copy, 0, extraFields, 1, extraFields.length - 1);
}
}
setExtra();
}
/**
* Remove an extra field.
*
* @param type
* the type of extra field to remove
*/
public void removeExtraField(final ZipShort type){
if (extraFields == null){
throw new java.util.NoSuchElementException();
}
final List newResult = new ArrayList<>();
for (final ZipExtraField extraField : extraFields){
if (!type.equals(extraField.getHeaderId())){
newResult.add(extraField);
}
}
if (extraFields.length == newResult.size()){
throw new java.util.NoSuchElementException();
}
extraFields = newResult.toArray(noExtraFields);
setExtra();
}
/**
* Removes unparseable extra field data.
*
* @since 1.1
*/
public void removeUnparseableExtraFieldData(){
if (unparseableExtra == null){
throw new java.util.NoSuchElementException();
}
unparseableExtra = null;
setExtra();
}
/**
* Looks up an extra field by its header id.
*
* @param type
* the header id
* @return null if no such field exists.
*/
public ZipExtraField getExtraField(final ZipShort type){
if (extraFields != null){
for (final ZipExtraField extraField : extraFields){
if (type.equals(extraField.getHeaderId())){
return extraField;
}
}
}
return null;
}
/**
* Looks up extra field data that couldn't be parsed correctly.
*
* @return null if no such field exists.
*
* @since 1.1
*/
public UnparseableExtraFieldData getUnparseableExtraFieldData(){
return unparseableExtra;
}
/**
* Parses the given bytes as extra field data and consumes any
* unparseable data as an {@link UnparseableExtraFieldData}
* instance.
*
* @param extra
* an array of bytes to be parsed into extra fields
* @throws RuntimeException
* if the bytes cannot be parsed
* @throws RuntimeException
* on error
*/
@Override
public void setExtra(final byte[] extra) throws RuntimeException{
try{
final ZipExtraField[] local = ExtraFieldUtils.parse(extra, true, ExtraFieldParsingMode.BEST_EFFORT);
mergeExtraFields(local, true);
}catch (final ZipException e){
// actually this is not possible as of Commons Compress 1.1
throw new RuntimeException(
"Error parsing extra fields for entry: " //NOSONAR
+ getName() + " - " + e.getMessage(),
e);
}
}
/**
* Unfortunately {@link java.util.zip.ZipOutputStream
* java.util.zip.ZipOutputStream} seems to access the extra data
* directly, so overriding getExtra doesn't help - we need to
* modify super's data directly.
*/
protected void setExtra(){
super.setExtra(ExtraFieldUtils.mergeLocalFileDataData(getAllExtraFieldsNoCopy()));
}
/**
* Sets the central directory part of extra fields.
*
* @param b
* an array of bytes to be parsed into extra fields
*/
public void setCentralDirectoryExtra(final byte[] b){
try{
final ZipExtraField[] central = ExtraFieldUtils.parse(b, false, ExtraFieldParsingMode.BEST_EFFORT);
mergeExtraFields(central, false);
}catch (final ZipException e){
// actually this is not possible as of Commons Compress 1.19
throw new RuntimeException(e.getMessage(), e); //NOSONAR
}
}
/**
* Retrieves the extra data for the local file data.
*
* @return the extra data for local file
*/
public byte[] getLocalFileDataExtra(){
final byte[] extra = getExtra();
return extra != null ? extra : EMPTY;
}
/**
* Retrieves the extra data for the central directory.
*
* @return the central directory extra data
*/
public byte[] getCentralDirectoryExtra(){
return ExtraFieldUtils.mergeCentralDirectoryData(getAllExtraFieldsNoCopy());
}
/**
* Get the name of the entry.
*
*
* This method returns the raw name as it is stored inside of the archive.
*
*
* @return the entry name
*/
@Override
public String getName(){
return name == null ? super.getName() : name;
}
/**
* Is this entry a directory?
*
* @return true if the entry is a directory
*/
@Override
public boolean isDirectory(){
final String n = getName();
return n != null && n.endsWith("/");
}
/**
* Set the name of the entry.
*
* @param name
* the name to use
*/
protected void setName(String name){
if (name != null && getPlatform() == PLATFORM_FAT && !name.contains("/")){
name = name.replace('\\', '/');
}
this.name = name;
}
/**
* Gets the uncompressed size of the entry data.
*
*
* Note: {@link ZipArchiveInputStream} may create
* entries that return {@link #SIZE_UNKNOWN SIZE_UNKNOWN} as long
* as the entry hasn't been read completely.
*
*
* @return the entry size
*/
@Override
public long getSize(){
return size;
}
/**
* Sets the uncompressed size of the entry data.
*
* @param size
* the uncompressed size in bytes
* @throws IllegalArgumentException
* if the specified size is less
* than 0
*/
@Override
public void setSize(final long size){
if (size < 0){
throw new IllegalArgumentException("Invalid entry size");
}
this.size = size;
}
/**
* Sets the name using the raw bytes and the string created from
* it by guessing or using the configured encoding.
*
* @param name
* the name to use created from the raw bytes using
* the guessed or configured encoding
* @param rawName
* the bytes originally read as name from the
* archive
* @since 1.2
*/
protected void setName(final String name,final byte[] rawName){
setName(name);
this.rawName = rawName;
}
/**
* Returns the raw bytes that made up the name before it has been
* converted using the configured or guessed encoding.
*
*
* This method will return null if this instance has not been
* read from an archive.
*
*
* @return the raw name bytes
* @since 1.2
*/
public byte[] getRawName(){
if (rawName != null){
return Arrays.copyOf(rawName, rawName.length);
}
return null;
}
protected long getLocalHeaderOffset(){
return this.localHeaderOffset;
}
protected void setLocalHeaderOffset(long localHeaderOffset){
this.localHeaderOffset = localHeaderOffset;
}
@Override
public long getDataOffset(){
return dataOffset;
}
/**
* Sets the data offset.
*
* @param dataOffset
* new value of data offset.
*/
protected void setDataOffset(long dataOffset){
this.dataOffset = dataOffset;
}
@Override
public boolean isStreamContiguous(){
return isStreamContiguous;
}
protected void setStreamContiguous(boolean isStreamContiguous){
this.isStreamContiguous = isStreamContiguous;
}
/**
* Get the hashCode of the entry.
* This uses the name as the hashcode.
*
* @return a hashcode.
*/
@Override
public int hashCode(){
// this method has severe consequences on performance. We cannot rely
// on the super.hashCode() method since super.getName() always return
// the empty string in the current implemention (there's no setter)
// so it is basically draining the performance of a hashmap lookup
final String n = getName();
return (n == null ? "" : n).hashCode();
}
/**
* The "general purpose bit" field.
*
* @return the general purpose bit
* @since 1.1
*/
public GeneralPurposeBit getGeneralPurposeBit(){
return gpb;
}
/**
* The "general purpose bit" field.
*
* @param b
* the general purpose bit
* @since 1.1
*/
public void setGeneralPurposeBit(final GeneralPurposeBit b){
gpb = b;
}
/**
* If there are no extra fields, use the given fields as new extra
* data - otherwise merge the fields assuming the existing fields
* and the new fields stem from different locations inside the
* archive.
*
* @param f
* the extra fields to merge
* @param local
* whether the new fields originate from local data
*/
private void mergeExtraFields(final ZipExtraField[] f,final boolean local){
if (extraFields == null){
setExtraFields(f);
}else{
for (final ZipExtraField element : f){
ZipExtraField existing;
if (element instanceof UnparseableExtraFieldData){
existing = unparseableExtra;
}else{
existing = getExtraField(element.getHeaderId());
}
if (existing == null){
addExtraField(element);
}else{
final byte[] b = local ? element.getLocalFileDataData() : element.getCentralDirectoryData();
try{
if (local){
existing.parseFromLocalFileData(b, 0, b.length);
}else{
existing.parseFromCentralDirectoryData(b, 0, b.length);
}
}catch (ZipException ex){
// emulate ExtraFieldParsingMode.fillAndMakeUnrecognizedOnError
final UnrecognizedExtraField u = new UnrecognizedExtraField();
u.setHeaderId(existing.getHeaderId());
if (local){
u.setLocalFileDataData(b);
u.setCentralDirectoryData(existing.getCentralDirectoryData());
}else{
u.setLocalFileDataData(existing.getLocalFileDataData());
u.setCentralDirectoryData(b);
}
removeExtraField(existing.getHeaderId());
addExtraField(u);
}
}
}
setExtra();
}
}
/**
* Wraps {@link java.util.zip.ZipEntry#getTime} with a {@link Date} as the
* entry's last modified date.
*
*
* Changes to the implementation of {@link java.util.zip.ZipEntry#getTime}
* leak through and the returned value may depend on your local
* time zone as well as your version of Java.
*
*/
@Override
public Date getLastModifiedDate(){
return new Date(getTime());
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(final Object obj){
if (this == obj){
return true;
}
if (obj == null || getClass() != obj.getClass()){
return false;
}
final ZipArchiveEntry other = (ZipArchiveEntry) obj;
final String myName = getName();
final String otherName = other.getName();
if (myName == null){
if (otherName != null){
return false;
}
}else if (!myName.equals(otherName)){
return false;
}
String myComment = getComment();
String otherComment = other.getComment();
if (myComment == null){
myComment = "";
}
if (otherComment == null){
otherComment = "";
}
return getTime() == other.getTime() && myComment.equals(otherComment) && getInternalAttributes() == other.getInternalAttributes()
&& getPlatform() == other.getPlatform() && getExternalAttributes() == other.getExternalAttributes()
&& getMethod() == other.getMethod() && getSize() == other.getSize() && getCrc() == other.getCrc()
&& getCompressedSize() == other.getCompressedSize()
&& Arrays.equals(getCentralDirectoryExtra(), other.getCentralDirectoryExtra())
&& Arrays.equals(getLocalFileDataExtra(), other.getLocalFileDataExtra())
&& localHeaderOffset == other.localHeaderOffset && dataOffset == other.dataOffset && gpb.equals(other.gpb);
}
/**
* Sets the "version made by" field.
*
* @param versionMadeBy
* "version made by" field
* @since 1.11
*/
public void setVersionMadeBy(final int versionMadeBy){
this.versionMadeBy = versionMadeBy;
}
/**
* Sets the "version required to expand" field.
*
* @param versionRequired
* "version required to expand" field
* @since 1.11
*/
public void setVersionRequired(final int versionRequired){
this.versionRequired = versionRequired;
}
/**
* The "version required to expand" field.
*
* @return "version required to expand" field
* @since 1.11
*/
public int getVersionRequired(){
return versionRequired;
}
/**
* The "version made by" field.
*
* @return "version made by" field
* @since 1.11
*/
public int getVersionMadeBy(){
return versionMadeBy;
}
/**
* The content of the flags field.
*
* @return content of the flags field
* @since 1.11
*/
public int getRawFlag(){
return rawFlag;
}
/**
* Sets the content of the flags field.
*
* @param rawFlag
* content of the flags field
* @since 1.11
*/
public void setRawFlag(final int rawFlag){
this.rawFlag = rawFlag;
}
/**
* The source of the name field value.
*
* @return source of the name field value
* @since 1.16
*/
public NameSource getNameSource(){
return nameSource;
}
/**
* Sets the source of the name field value.
*
* @param nameSource
* source of the name field value
* @since 1.16
*/
public void setNameSource(NameSource nameSource){
this.nameSource = nameSource;
}
/**
* The source of the comment field value.
*
* @return source of the comment field value
* @since 1.16
*/
public CommentSource getCommentSource(){
return commentSource;
}
/**
* Sets the source of the comment field value.
*
* @param commentSource
* source of the comment field value
* @since 1.16
*/
public void setCommentSource(CommentSource commentSource){
this.commentSource = commentSource;
}
/**
* The number of the split segment this entry starts at.
*
* @return the number of the split segment this entry starts at.
* @since 1.20
*/
public long getDiskNumberStart(){
return diskNumberStart;
}
/**
* The number of the split segment this entry starts at.
*
* @param diskNumberStart
* the number of the split segment this entry starts at.
* @since 1.20
*/
public void setDiskNumberStart(long diskNumberStart){
this.diskNumberStart = diskNumberStart;
}
private ZipExtraField[] copyOf(final ZipExtraField[] src,final int length){
final ZipExtraField[] cpy = new ZipExtraField[length];
System.arraycopy(src, 0, cpy, 0, Math.min(src.length, length));
return cpy;
}
/**
* How to try to parse the extra fields.
*
*
* Configures the bahvior for:
*
*
* - What shall happen if the extra field content doesn't
* follow the recommended pattern of two-byte id followed by a
* two-byte length?
* - What shall happen if an extra field is generally supported
* by Commons Compress but its content cannot be parsed
* correctly? This may for example happen if the archive is
* corrupt, it triggers a bug in Commons Compress or the extra
* field uses a version not (yet) supported by Commons
* Compress.
*
*
* @since 1.19
*/
public enum ExtraFieldParsingMode implements ExtraFieldParsingBehavior{
/**
* Try to parse as many extra fields as possible and wrap
* unknown extra fields as well as supported extra fields that
* cannot be parsed in {@link UnrecognizedExtraField}.
*
*
* Wrap extra data that doesn't follow the recommended
* pattern in an {@link UnparseableExtraFieldData}
* instance.
*
*
*
* This is the default behavior starting with Commons Compress 1.19.
*
*/
BEST_EFFORT(ExtraFieldUtils.UnparseableExtraField.READ){
@Override
public ZipExtraField fill(ZipExtraField field,byte[] data,int off,int len,boolean local){
return fillAndMakeUnrecognizedOnError(field, data, off, len, local);
}
},
/**
* Try to parse as many extra fields as possible and wrap
* unknown extra fields in {@link UnrecognizedExtraField}.
*
*
* Wrap extra data that doesn't follow the recommended
* pattern in an {@link UnparseableExtraFieldData}
* instance.
*
*
*
* Throw an exception if an extra field that is generally
* supported cannot be parsed.
*
*
*
* This used to be the default behavior prior to Commons
* Compress 1.19.
*
*/
STRICT_FOR_KNOW_EXTRA_FIELDS(ExtraFieldUtils.UnparseableExtraField.READ),
/**
* Try to parse as many extra fields as possible and wrap
* unknown extra fields as well as supported extra fields that
* cannot be parsed in {@link UnrecognizedExtraField}.
*
*
* Ignore extra data that doesn't follow the recommended
* pattern.
*
*/
ONLY_PARSEABLE_LENIENT(ExtraFieldUtils.UnparseableExtraField.SKIP){
@Override
public ZipExtraField fill(ZipExtraField field,byte[] data,int off,int len,boolean local){
return fillAndMakeUnrecognizedOnError(field, data, off, len, local);
}
},
/**
* Try to parse as many extra fields as possible and wrap
* unknown extra fields in {@link UnrecognizedExtraField}.
*
*
* Ignore extra data that doesn't follow the recommended
* pattern.
*
*
*
* Throw an exception if an extra field that is generally
* supported cannot be parsed.
*
*/
ONLY_PARSEABLE_STRICT(ExtraFieldUtils.UnparseableExtraField.SKIP),
/**
* Throw an exception if any of the recognized extra fields
* cannot be parsed or any extra field violates the
* recommended pattern.
*/
DRACONIC(ExtraFieldUtils.UnparseableExtraField.THROW);
private final ExtraFieldUtils.UnparseableExtraField onUnparseableData;
private ExtraFieldParsingMode(ExtraFieldUtils.UnparseableExtraField onUnparseableData){
this.onUnparseableData = onUnparseableData;
}
@Override
public ZipExtraField onUnparseableExtraField(byte[] data,int off,int len,boolean local,int claimedLength) throws ZipException{
return onUnparseableData.onUnparseableExtraField(data, off, len, local, claimedLength);
}
@Override
public ZipExtraField createExtraField(final ZipShort headerId) throws ZipException,InstantiationException,IllegalAccessException{
return ExtraFieldUtils.createExtraField(headerId);
}
@Override
public ZipExtraField fill(ZipExtraField field,byte[] data,int off,int len,boolean local) throws ZipException{
return ExtraFieldUtils.fillExtraField(field, data, off, len, local);
}
private static ZipExtraField fillAndMakeUnrecognizedOnError(ZipExtraField field,byte[] data,int off,int len,boolean local){
try{
return ExtraFieldUtils.fillExtraField(field, data, off, len, local);
}catch (ZipException ex){
final UnrecognizedExtraField u = new UnrecognizedExtraField();
u.setHeaderId(field.getHeaderId());
if (local){
u.setLocalFileDataData(Arrays.copyOfRange(data, off, off + len));
}else{
u.setCentralDirectoryData(Arrays.copyOfRange(data, off, off + len));
}
return u;
}
}
}
}