From 23c80ea9f8902d704d6d66e391da2f2f58c4867a Mon Sep 17 00:00:00 2001 From: Dmitry Isaenko Date: Thu, 15 Sep 2022 18:42:33 +0300 Subject: [PATCH] Init repo --- .drone.yml | 30 + LICENSE | 674 ++++++++++++++++++ README.md | 3 + pom.xml | 104 +++ .../java/isee9660/DataFormatConverter.java | 40 ++ src/main/java/isee9660/Main.java | 31 + src/main/java/isee9660/cd/DateTime.java | 80 +++ src/main/java/isee9660/cd/DirectoryEntry.java | 92 +++ src/main/java/isee9660/cd/ISO9660.java | 185 +++++ src/main/java/isee9660/cd/PathTableEntry.java | 56 ++ src/main/java/isee9660/cd/PathTableLE.java | 51 ++ 11 files changed, 1346 insertions(+) create mode 100644 .drone.yml create mode 100644 LICENSE create mode 100644 README.md create mode 100644 pom.xml create mode 100644 src/main/java/isee9660/DataFormatConverter.java create mode 100644 src/main/java/isee9660/Main.java create mode 100644 src/main/java/isee9660/cd/DateTime.java create mode 100644 src/main/java/isee9660/cd/DirectoryEntry.java create mode 100644 src/main/java/isee9660/cd/ISO9660.java create mode 100644 src/main/java/isee9660/cd/PathTableEntry.java create mode 100644 src/main/java/isee9660/cd/PathTableLE.java diff --git a/.drone.yml b/.drone.yml new file mode 100644 index 0000000..a79cf31 --- /dev/null +++ b/.drone.yml @@ -0,0 +1,30 @@ +kind: pipeline +type: docker +name: default + +steps: + - name: build-install-locally + image: maven:3-jdk-11 + commands: + - mvn -B -DskipTests clean install + - mvn test -B + volumes: + - name: m2 + path: /root/.m2 + + - name: archive-artifact + image: alpine:latest + commands: + - mkdir -p /builds/ISEE9660 + - cp target/ISEE9660-*[0-9].jar /builds/ISEE9660/ + volumes: + - name: builds + path: /builds + +volumes: + - name: m2 + host: + path: /home/docker/drone/files/m2 + - name: builds + host: + path: /home/www/builds \ No newline at end of file diff --git a/LICENSE b/LICENSE new file mode 100644 index 0000000..9cecc1d --- /dev/null +++ b/LICENSE @@ -0,0 +1,674 @@ + GNU GENERAL PUBLIC LICENSE + Version 3, 29 June 2007 + + Copyright (C) 2007 Free Software Foundation, Inc. + Everyone is permitted to copy and distribute verbatim copies + of this license document, but changing it is not allowed. + + Preamble + + The GNU General Public License is a free, copyleft license for +software and other kinds of works. + + The licenses for most software and other practical works are designed +to take away your freedom to share and change the works. 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It is safest +to attach them to the start of each source file to most effectively +state the exclusion of warranty; and each file should have at least +the "copyright" line and a pointer to where the full notice is found. + + {one line to give the program's name and a brief idea of what it does.} + Copyright (C) {year} {name of author} + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program. If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + {project} Copyright (C) {year} {fullname} + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/README.md b/README.md new file mode 100644 index 0000000..a62695b --- /dev/null +++ b/README.md @@ -0,0 +1,3 @@ +#### ISEE9660 + +Simple ISO9660 reader. Nice example, good for reuse. \ No newline at end of file diff --git a/pom.xml b/pom.xml new file mode 100644 index 0000000..408f04d --- /dev/null +++ b/pom.xml @@ -0,0 +1,104 @@ + + + 4.0.0 + + ru.redrise + ISEE9660 + 1.0 + +https://github.com/developersu/${project.artifactId}/ + + Simple ISO9660 reader + +2022 + + Dmitry Isaenko + https://developersu.blogspot.com/ + + + + + GNU General Public License v3 + http://www.gnu.org/licenses/gpl.txt + manual + + + + + + developer.su + Dmitry Isaenko + + Developer + + +3 + https://redrise.ru/ + + + + + 8 + 8 + UTF-8 + yyyyMMdd.HHmmss + + + + GitHub + https://github.com/developer_su/${project.artifactId}/issues + + + + ${project.artifactId}-${project.version}-${maven.build.timestamp} + + + org.apache.maven.plugins + maven-compiler-plugin + 3.1 + + 1.8 + 1.8 + + + + + maven-jar-plugin + 2.4 + + + default-jar + none + + + + + + org.apache.maven.plugins + maven-assembly-plugin + 3.1.0 + + + + isee9660.Main + + + + jar-with-dependencies + + false + + + + make-assembly + package + + single + + + + + + + \ No newline at end of file diff --git a/src/main/java/isee9660/DataFormatConverter.java b/src/main/java/isee9660/DataFormatConverter.java new file mode 100644 index 0000000..61afcd3 --- /dev/null +++ b/src/main/java/isee9660/DataFormatConverter.java @@ -0,0 +1,40 @@ +/* + + Copyright "2022" Dmitry Isaenko + + This file is part of ISEE9660. + + ISEE9660 is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + ISEE9660 is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with ISEE9660. If not, see . + + */ +package isee9660; + +import java.nio.ByteBuffer; +import java.nio.ByteOrder; + +public class DataFormatConverter { + public static short getLEshort(byte[] bytes, int fromOffset){ + return ByteBuffer.wrap(bytes, fromOffset, 0x2).order(ByteOrder.LITTLE_ENDIAN).getShort(); + } + public static short getBEshort(byte[] bytes, int fromOffset){ + return ByteBuffer.wrap(bytes, fromOffset, 0x2).order(ByteOrder.BIG_ENDIAN).getShort(); + } + + public static int getLEint(byte[] bytes, int fromOffset){ + return ByteBuffer.wrap(bytes, fromOffset, 0x4).order(ByteOrder.LITTLE_ENDIAN).getInt(); + } + public static int getBEint(byte[] bytes, int fromOffset){ + return ByteBuffer.wrap(bytes, fromOffset, 0x4).order(ByteOrder.BIG_ENDIAN).getInt(); + } +} diff --git a/src/main/java/isee9660/Main.java b/src/main/java/isee9660/Main.java new file mode 100644 index 0000000..24e522c --- /dev/null +++ b/src/main/java/isee9660/Main.java @@ -0,0 +1,31 @@ +/* + Copyright 2022 Dmitry Isaenko + + This file is part of ISEE9660. + + ISEE9660 is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + ISEE9660 is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with ISEE9660. If not, see . + */ +package isee9660; + +import isee9660.cd.ISO9660; + +public class Main { + public static void main(String[] args) throws Exception{ + if (args.length != 1){ + System.out.println("Usage: java -jar thisApplication.jar "); + return; + } + new ISO9660(args[0]); + } +} diff --git a/src/main/java/isee9660/cd/DateTime.java b/src/main/java/isee9660/cd/DateTime.java new file mode 100644 index 0000000..ac1a68a --- /dev/null +++ b/src/main/java/isee9660/cd/DateTime.java @@ -0,0 +1,80 @@ +/* + + Copyright "2022" Dmitry Isaenko + + This file is part of ISEE9660. + + ISEE9660 is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + ISEE9660 is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with ISEE9660. If not, see . + + */ +package isee9660.cd; + +import java.nio.charset.StandardCharsets; + +public class DateTime { + private String dateTime; + private byte[] rawDateTime; + + private DateTime(){} + + public static DateTime getPrimaryVolumeDescriptorDateTime(byte[] dateTimeBytes){ + DateTime INSTANCE = new DateTime(); + INSTANCE.rawDateTime = dateTimeBytes; + + int timeZone = dateTimeBytes[6]*15/60; + + String timeZoneString; + if (timeZone > 0) + timeZoneString = "+"+timeZone; + else + timeZoneString = Integer.toString(timeZone); + + INSTANCE.dateTime = String.format("%s-%s-%s %s:%s:%s:%s GMT%s", + new String(dateTimeBytes, 0, 4, StandardCharsets.US_ASCII), + new String(dateTimeBytes, 4, 2, StandardCharsets.US_ASCII), + new String(dateTimeBytes, 6, 2, StandardCharsets.US_ASCII), + new String(dateTimeBytes, 8, 2, StandardCharsets.US_ASCII), + new String(dateTimeBytes, 10, 2, StandardCharsets.US_ASCII), + new String(dateTimeBytes, 12, 2, StandardCharsets.US_ASCII), + new String(dateTimeBytes, 14, 2, StandardCharsets.US_ASCII), + timeZoneString); + return INSTANCE; + } + + public static DateTime getDateTime(byte[] dateTimeBytes){ + DateTime INSTANCE = new DateTime(); + INSTANCE.rawDateTime = dateTimeBytes; + + int timeZone = dateTimeBytes[6]*15/60; + + String timeZoneString; + if (timeZone > 0) + timeZoneString = "+"+timeZone; + else + timeZoneString = Integer.toString(timeZone); + + INSTANCE.dateTime = String.format("%d-%02d-%02d %02d:%02d:%02d GMT%s", + (1900+dateTimeBytes[0]), + dateTimeBytes[1], + dateTimeBytes[2], + dateTimeBytes[3], + dateTimeBytes[4], + dateTimeBytes[5], + timeZoneString); + return INSTANCE; + } + @Override + public String toString() {return dateTime;} + public byte[] getRawBytes() {return rawDateTime;} +} diff --git a/src/main/java/isee9660/cd/DirectoryEntry.java b/src/main/java/isee9660/cd/DirectoryEntry.java new file mode 100644 index 0000000..9939489 --- /dev/null +++ b/src/main/java/isee9660/cd/DirectoryEntry.java @@ -0,0 +1,92 @@ +/* + Copyright 2022 Dmitry Isaenko + + This file is part of ISEE9660. + + ISEE9660 is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + ISEE9660 is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with ISEE9660. If not, see . + */ +package isee9660.cd; + +import java.nio.charset.StandardCharsets; +import java.util.Arrays; + +import static isee9660.DataFormatConverter.getLEint; +import static isee9660.DataFormatConverter.getLEshort; + +public class DirectoryEntry { + private final byte[] entryBytes; + + private final byte length; + private final byte extendedAttributeRecordLength; + private final int extentLocation; // lsb start + private final int dataSize; + private final String dateTime; + private final byte flags; + private final byte fileUnitSize; + private final byte interleave; + private final short volumeSequenceNumber; + private final byte identifierLength; + private final String identifier; + private final boolean endPaddingPresent; + + public DirectoryEntry(byte[] entryBytes){ + this.entryBytes = entryBytes; + + this.length = entryBytes[0]; + this.extendedAttributeRecordLength = entryBytes[1]; + this.extentLocation = getLEint(entryBytes, 0x2); + this.dataSize = getLEint(entryBytes, 0xA); + this.dateTime = DateTime.getDateTime(Arrays.copyOfRange(entryBytes, 0x12, 0x19)).toString(); + this.flags = entryBytes[0x19]; + this.fileUnitSize = entryBytes[0x1a]; + this.interleave = entryBytes[0x1b]; + this.volumeSequenceNumber = getLEshort(entryBytes, 0x1c); + this.identifierLength = entryBytes[0x20]; + this.identifier = new String(entryBytes, 0x21, identifierLength, StandardCharsets.US_ASCII); + this.endPaddingPresent = identifierLength % 2 == 0; + } + + public byte getLength() {return length;} + public byte getExtendedAttributeRecordLength() {return extendedAttributeRecordLength;} + public int getExtentLocation() {return extentLocation;} + public int getDataSize() {return dataSize;} + public String getDateTime() {return dateTime;} + public byte getFlags() {return flags;} + public byte getFileUnitSize() {return fileUnitSize;} + public byte getInterleave() {return interleave;} + public short getVolumeSequenceNumber() {return volumeSequenceNumber;} + public byte getIdentifierLength() {return identifierLength;} + public String getIdentifier() {return identifier;} + public boolean isEndPaddingPresent() {return endPaddingPresent;} + + public void printDebug(){ + System.out.println( + " Length " + length + "\n" + + " Extended Attribute Record Length " + extendedAttributeRecordLength + "\n" + + " Extent Location " + extentLocation + "\n" + + " Data Size " + dataSize + "\n" + + " DateTime " + dateTime + "\n" + + " Flags [7 <- 0] " + String.format("%8s", Integer.toBinaryString(flags)).replace(' ', '0') + "\n" + + " File Unit Size " + fileUnitSize + "\n" + + " Interleave " + interleave + "\n" + + " Volume Sequence Number " + volumeSequenceNumber + "\n" + + " Name Length " + identifierLength + "\n" + + " Name " + identifier + + ((identifierLength == 1 && entryBytes[0x21] == 0x00)?" (stands for \".\")":"") + + + ((identifierLength == 1 && entryBytes[0x21] == 0x01)?" (stands for \"..\")":"") + + "\n" + + " Is end padding present? " + endPaddingPresent+ "\n ---------------" ); + } +} diff --git a/src/main/java/isee9660/cd/ISO9660.java b/src/main/java/isee9660/cd/ISO9660.java new file mode 100644 index 0000000..ffb8646 --- /dev/null +++ b/src/main/java/isee9660/cd/ISO9660.java @@ -0,0 +1,185 @@ +/* + Copyright 2022 Dmitry Isaenko + + This file is part of ISEE9660. + + ISEE9660 is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + ISEE9660 is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with ISEE9660. If not, see . + */ +package isee9660.cd; + +import java.io.File; +import java.io.RandomAccessFile; +import java.nio.charset.StandardCharsets; +import java.util.Arrays; + +import static isee9660.DataFormatConverter.*; + +public class ISO9660 { + private final RandomAccessFile randomAccessFile; + private byte type; + private String identifier; + private byte version; + //unused1; + private String systemIdentifier; + private String volumeIdentifier; + //unused2; + private long volumeSpaceSize; + //unused3; + private short volumeSetSize; + private short volumeSequenceNumber; + private short logicalBlockSize; + private int pathTableSize; + private int locationOfType_LPathTable; + private int locationOfOptionalType_LPathTable; + private int locationOfType_MPathTable; + private int locationOfOptionalType_MPathTable; + private DirectoryEntry rootEntry; + private String volumeSetIdentifier; + private String publisherIdentifier; + private String dataPreparerIdentifier; + private String applicationIdentifier; + private String CopyrightFileIdentifier; + private String abstractFileIdentifier; + private String bibliographicFileIdentifier; + private String volumeCreationDateTime; + private String volumeModificationDateTime; + private String volumeExpirationDateTime; + private String volumeEffectiveDateTime; + private byte fileStructureStandardVersion; + //unused4; + //applicationUse; + //reserved; + private PathTableLE pathTableLE; + public ISO9660(String path) throws Exception { + this(new File(path)); + } + public ISO9660(File iso) throws Exception { + this.randomAccessFile = new RandomAccessFile(iso, "r"); + + skipFirst16Sectors(); + readInitialDescriptor(); + readPathTableLE(); + printDebug(); + } + private void skipFirst16Sectors() throws Exception{ + randomAccessFile.seek(2048*16); + } + private void readInitialDescriptor() throws Exception{ + byte[] firstPayloadDescriptor = new byte[2048]; + if (2048 != randomAccessFile.read(firstPayloadDescriptor)) + throw new Exception("Can't read first descriptor at offset of 0x10"); + + this.type = firstPayloadDescriptor[0]; + this.identifier = new String(firstPayloadDescriptor, 0x1, 0x5, StandardCharsets.US_ASCII); + this.version = firstPayloadDescriptor[0x6]; + // Let's perform some basic validations + if (type != 1) + throw new Exception("Not supported ISO Type of "+type); + if (! identifier.contentEquals("CD001")) + throw new Exception("Not supported ISO Identifier of "+identifier); + if (version != 1) + throw new Exception("Not supported ISO Version of "+version); + this.systemIdentifier = new String(firstPayloadDescriptor, 0x8, 0x20, StandardCharsets.US_ASCII); + this.volumeIdentifier = new String(firstPayloadDescriptor, 0x28, 0x20, StandardCharsets.US_ASCII);; + this.volumeSpaceSize = getLEint(firstPayloadDescriptor, 0x50); // Both-endian; 4 bit palindrome ; amount of data available on the CD-ROM + this.volumeSetSize = getLEshort(firstPayloadDescriptor, 0x78); + this.volumeSequenceNumber = getLEshort(firstPayloadDescriptor, 0x7c); + this.logicalBlockSize = getLEshort(firstPayloadDescriptor, 0x80); + this.pathTableSize = getLEint(firstPayloadDescriptor, 0x84); + this.locationOfType_LPathTable = getLEint(firstPayloadDescriptor, 0x8c); // LE + this.locationOfOptionalType_LPathTable = getLEint(firstPayloadDescriptor, 0x90); //LE + this.locationOfType_MPathTable = getBEint(firstPayloadDescriptor, 0x94); //BE + this.locationOfOptionalType_MPathTable = getBEint(firstPayloadDescriptor, 0x98); //BE + this.rootEntry = new DirectoryEntry(Arrays.copyOfRange(firstPayloadDescriptor, 0x9c, 0xbe)); + this.volumeSetIdentifier = new String(firstPayloadDescriptor, 0xbe, 0x80, StandardCharsets.US_ASCII); + this.publisherIdentifier = new String(firstPayloadDescriptor, 0x13e, 0x80, StandardCharsets.US_ASCII); + this.dataPreparerIdentifier = new String(firstPayloadDescriptor, 0x1be, 0x80, StandardCharsets.US_ASCII); + this.applicationIdentifier = new String(firstPayloadDescriptor, 0x23e, 0x80, StandardCharsets.US_ASCII); + this.CopyrightFileIdentifier = new String(firstPayloadDescriptor, 0x2be, 0x25, StandardCharsets.US_ASCII); + this.abstractFileIdentifier = new String(firstPayloadDescriptor, 0x2e3, 0x25, StandardCharsets.US_ASCII); + this.bibliographicFileIdentifier = new String(firstPayloadDescriptor, 0x308, 0x25, StandardCharsets.US_ASCII); + this.volumeCreationDateTime = DateTime.getPrimaryVolumeDescriptorDateTime(Arrays.copyOfRange(firstPayloadDescriptor, 813, 830)).toString(); + this.volumeModificationDateTime = DateTime.getPrimaryVolumeDescriptorDateTime(Arrays.copyOfRange(firstPayloadDescriptor, 830, 847)).toString(); + this.volumeExpirationDateTime = DateTime.getPrimaryVolumeDescriptorDateTime(Arrays.copyOfRange(firstPayloadDescriptor, 847, 864)).toString(); + this.volumeEffectiveDateTime = DateTime.getPrimaryVolumeDescriptorDateTime(Arrays.copyOfRange(firstPayloadDescriptor, 864, 881)).toString(); + this.fileStructureStandardVersion = firstPayloadDescriptor[0x371]; + } + + private void readPathTableLE() throws Exception{ + randomAccessFile.seek(2048L * locationOfType_LPathTable); + byte[] pathTableBytes = new byte[pathTableSize]; + if (pathTableSize != randomAccessFile.read(pathTableBytes)) + throw new Exception("Can't read Path Table"); + + pathTableLE = new PathTableLE(pathTableBytes); + } + + private void getRootEntryFiles(DirectoryEntry entry) throws Exception{ + //entry.printDebug(); + randomAccessFile.seek(entry.getExtentLocation() * 2048L); + byte[] bytes = new byte[entry.getDataSize()]; + if (entry.getDataSize() != randomAccessFile.read(bytes)) + throw new Exception("Can't look inside Root folder"); + + int entryOffset = 0; + while (entryOffset < entry.getDataSize()){ + byte entryLength = bytes[entryOffset]; + + if (entryLength == 0) + break; + + byte[] entryBytes = Arrays.copyOfRange(bytes, entryOffset, entryOffset+entryLength); + DirectoryEntry entryIn = new DirectoryEntry(entryBytes); + entryIn.printDebug(); + entryOffset += entryLength; + } + } + + private void printDebug() throws Exception{ + System.out.println( + "Type: "+type + "\n" + + "Identifier: "+identifier + "\n" + + "Version: "+version + "\n" + + "System Identifier " + systemIdentifier + "\n" + + "Volume Identifier " + volumeIdentifier + "\n" + + "Volume Space Size " + volumeSpaceSize + "\n" + + "Volume Set Size " + volumeSetSize + "\n" + + "Volume Sequence Number " + volumeSequenceNumber + "\n" + + "Logical Block Size " + logicalBlockSize + "\n" + + "Path Table Size " + pathTableSize + "\n" + + "Location of Type-L Path Table " + locationOfType_LPathTable + "\n" + + "Location of the Optional Type-L Path Table " + locationOfOptionalType_LPathTable + "\n" + + "Location of Type-M Path Table " + locationOfType_MPathTable + "\n" + + "Location of Optional Type-M Path Table " + locationOfOptionalType_MPathTable); + rootEntry.printDebug(); + System.out.println( + "Volume Set Identifier " + volumeSetIdentifier + "\n" + + "Publisher Identifier " + publisherIdentifier + "\n" + + "Data Preparer Identifier " + dataPreparerIdentifier + "\n" + + "Application Identifier " + applicationIdentifier + "\n" + + "Copyright File Identifier " + CopyrightFileIdentifier + "\n" + + "Abstract File Identifier " + abstractFileIdentifier + "\n" + + "Bibliographic File Identifier " + bibliographicFileIdentifier + "\n" + + "Volume Creation Date and Time " + volumeCreationDateTime + "\n" + + "Volume Modification Date and Time " + volumeModificationDateTime + "\n" + + "Volume Expiration Date and Time " + volumeExpirationDateTime + "\n" + + "Volume Effective Date and Time " + volumeEffectiveDateTime + "\n" + + "File Structure Version " + fileStructureStandardVersion + + "\n--------------------------------------------------------------------------------"); + + pathTableLE.printDebug(); + System.out.println("= Files and directories @ root ="); + getRootEntryFiles(rootEntry); + } +} diff --git a/src/main/java/isee9660/cd/PathTableEntry.java b/src/main/java/isee9660/cd/PathTableEntry.java new file mode 100644 index 0000000..db18bdd --- /dev/null +++ b/src/main/java/isee9660/cd/PathTableEntry.java @@ -0,0 +1,56 @@ +/* + + Copyright "2022" Dmitry Isaenko + + This file is part of ISEE9660. + + ISEE9660 is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + ISEE9660 is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with ISEE9660. If not, see . + + */ +package isee9660.cd; + +import java.nio.charset.StandardCharsets; + +import static isee9660.DataFormatConverter.getLEint; +import static isee9660.DataFormatConverter.getLEshort; + +public class PathTableEntry { + private final byte identifierLength; // identifier aka name + private final byte extendedAttributeRecordLength; + private final int extentLocation; //First logical block where directory stored + private final short parentDirectoryNumber; + private final String directoryIdentifier; + + private final int entrySize; + + public PathTableEntry(byte[] pathTableBytes, int offset){ + this.identifierLength = pathTableBytes[offset]; + this.extendedAttributeRecordLength = pathTableBytes[1+offset]; + this.extentLocation = getLEint(pathTableBytes, 0x2+offset); + this.parentDirectoryNumber = getLEshort(pathTableBytes, 0x6+offset); + this.directoryIdentifier = new String(pathTableBytes, 0x8+offset, identifierLength, StandardCharsets.US_ASCII); + if (identifierLength % 2 == 0) + entrySize = 8+identifierLength; + else + entrySize = 8+identifierLength+1; // padding bytes in the end presented + + } + public byte getIdentifierLength() {return identifierLength;} + public byte getExtendedAttributeRecordLength() {return extendedAttributeRecordLength;} + public int getExtentLocation() {return extentLocation;} + public short getParentDirectoryNumber() {return parentDirectoryNumber;} + public String getDirectoryIdentifier() {return directoryIdentifier;} + + public int getEntrySize() {return entrySize;} +} diff --git a/src/main/java/isee9660/cd/PathTableLE.java b/src/main/java/isee9660/cd/PathTableLE.java new file mode 100644 index 0000000..9da8484 --- /dev/null +++ b/src/main/java/isee9660/cd/PathTableLE.java @@ -0,0 +1,51 @@ +/* + + Copyright "2022" Dmitry Isaenko + + This file is part of ISEE9660. + + ISEE9660 is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + ISEE9660 is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with ISEE9660. If not, see . + + */ +package isee9660.cd; + +import java.util.ArrayList; +import java.util.List; + +public class PathTableLE { + private final List pathTableEntries; + + public PathTableLE(byte[] pathTableBytes){ + this.pathTableEntries = new ArrayList<>(); + + for (int i = 0; i < pathTableBytes.length; ) { + PathTableEntry entry = new PathTableEntry(pathTableBytes, i); + pathTableEntries.add(entry); + i += entry.getEntrySize(); + } + } + + public void printDebug(){ + System.out.println(" Path Table\n ---------------------------------------------"); + for (PathTableEntry entry: pathTableEntries) + System.out.println( + " | Identifier Length : " + entry.getIdentifierLength() + "\n" + + " | Extended Attribute Record Length : " + entry.getExtendedAttributeRecordLength() + "\n" + + " | Extent Location : " + entry.getExtentLocation() + "\n" + + " | Parent Directory Number : " + entry.getParentDirectoryNumber() + "\n" + + " | Name : " + entry.getDirectoryIdentifier() + "\n" + + " | Padding byte present? : " + ((entry.getIdentifierLength()%2==0)?"N":"Y") + + "\n ---------------------------------------------"); + } +}