├── .gitignore ├── LICENSE ├── README.md ├── build.gradle ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── settings.gradle └── src └── main └── java ├── Entrance.java └── OmcTextDecoder.java /.gitignore: -------------------------------------------------------------------------------- 1 | build 2 | out 3 | .gradle 4 | .idea 5 | *.iml -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright [yyyy] [name of copyright owner] 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. 202 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # OmcTextDecoder 2 | Decode / Encode Samsung Note 8 (SM-N950N) csc files 3 | 4 | ## How To Use 5 | Download the latest jar file [here](https://github.com/fei-ke/OmcTextDecoder/releases) 6 | 7 | deocode 8 | 9 | ``` shell 10 | java -jar omc-decoder.jar -i cscfeature.xml -o cscfeature_decoded.xml 11 | ``` 12 | 13 | or try to decode all files under a directory 14 | 15 | ``` shell 16 | java -jar omc-decoder.jar -i omc -o omc_decoded 17 | ``` 18 | 19 | encode 20 | 21 | ``` 22 | java -jar omc-decoder.jar -e -i cscfeature_decoded.xml -o cscfeature.xml 23 | ``` 24 | 25 | or try to encode all files under a directory 26 | 27 | ``` shell 28 | java -jar omc-decoder.jar -e -i omc_decoded -o omc_encoded 29 | ``` 30 | 31 | ## How To Build 32 | 33 | ``` 34 | ./gradlew jar 35 | ``` 36 | 37 | then the jar file output to ```build/libs/``` 38 | -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | group 'com.fei-ke' 2 | version '0.4' 3 | 4 | apply plugin: 'java' 5 | 6 | sourceCompatibility = 1.5 7 | targetCompatibility = 1.5 8 | 9 | repositories { 10 | jcenter() 11 | } 12 | 13 | jar { 14 | from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } } 15 | manifest { attributes 'Main-Class': 'Entrance' } 16 | } 17 | dependencies { 18 | compile 'commons-cli:commons-cli:1.4' 19 | } 20 | -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/fei-ke/OmcTextDecoder/afbb2c1bbe20b0a967a00c54c5a57ee95c8614f4/gradle/wrapper/gradle-wrapper.jar -------------------------------------------------------------------------------- /gradle/wrapper/gradle-wrapper.properties: -------------------------------------------------------------------------------- 1 | distributionBase=GRADLE_USER_HOME 2 | distributionPath=wrapper/dists 3 | distributionUrl=https\://services.gradle.org/distributions/gradle-4.6-bin.zip 4 | zipStoreBase=GRADLE_USER_HOME 5 | zipStorePath=wrapper/dists 6 | -------------------------------------------------------------------------------- /gradlew: -------------------------------------------------------------------------------- 1 | #!/usr/bin/env sh 2 | 3 | ############################################################################## 4 | ## 5 | ## Gradle start up script for UN*X 6 | ## 7 | ############################################################################## 8 | 9 | # Attempt to set APP_HOME 10 | # Resolve links: $0 may be a link 11 | PRG="$0" 12 | # Need this for relative symlinks. 13 | while [ -h "$PRG" ] ; do 14 | ls=`ls -ld "$PRG"` 15 | link=`expr "$ls" : '.*-> \(.*\)$'` 16 | if expr "$link" : '/.*' > /dev/null; then 17 | PRG="$link" 18 | else 19 | PRG=`dirname "$PRG"`"/$link" 20 | fi 21 | done 22 | SAVED="`pwd`" 23 | cd "`dirname \"$PRG\"`/" >/dev/null 24 | APP_HOME="`pwd -P`" 25 | cd "$SAVED" >/dev/null 26 | 27 | APP_NAME="Gradle" 28 | APP_BASE_NAME=`basename "$0"` 29 | 30 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 31 | DEFAULT_JVM_OPTS="" 32 | 33 | # Use the maximum available, or set MAX_FD != -1 to use that value. 34 | MAX_FD="maximum" 35 | 36 | warn () { 37 | echo "$*" 38 | } 39 | 40 | die () { 41 | echo 42 | echo "$*" 43 | echo 44 | exit 1 45 | } 46 | 47 | # OS specific support (must be 'true' or 'false'). 48 | cygwin=false 49 | msys=false 50 | darwin=false 51 | nonstop=false 52 | case "`uname`" in 53 | CYGWIN* ) 54 | cygwin=true 55 | ;; 56 | Darwin* ) 57 | darwin=true 58 | ;; 59 | MINGW* ) 60 | msys=true 61 | ;; 62 | NONSTOP* ) 63 | nonstop=true 64 | ;; 65 | esac 66 | 67 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 68 | 69 | # Determine the Java command to use to start the JVM. 70 | if [ -n "$JAVA_HOME" ] ; then 71 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 72 | # IBM's JDK on AIX uses strange locations for the executables 73 | JAVACMD="$JAVA_HOME/jre/sh/java" 74 | else 75 | JAVACMD="$JAVA_HOME/bin/java" 76 | fi 77 | if [ ! -x "$JAVACMD" ] ; then 78 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 79 | 80 | Please set the JAVA_HOME variable in your environment to match the 81 | location of your Java installation." 82 | fi 83 | else 84 | JAVACMD="java" 85 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 86 | 87 | Please set the JAVA_HOME variable in your environment to match the 88 | location of your Java installation." 89 | fi 90 | 91 | # Increase the maximum file descriptors if we can. 92 | if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then 93 | MAX_FD_LIMIT=`ulimit -H -n` 94 | if [ $? -eq 0 ] ; then 95 | if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then 96 | MAX_FD="$MAX_FD_LIMIT" 97 | fi 98 | ulimit -n $MAX_FD 99 | if [ $? -ne 0 ] ; then 100 | warn "Could not set maximum file descriptor limit: $MAX_FD" 101 | fi 102 | else 103 | warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" 104 | fi 105 | fi 106 | 107 | # For Darwin, add options to specify how the application appears in the dock 108 | if $darwin; then 109 | GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" 110 | fi 111 | 112 | # For Cygwin, switch paths to Windows format before running java 113 | if $cygwin ; then 114 | APP_HOME=`cygpath --path --mixed "$APP_HOME"` 115 | CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` 116 | JAVACMD=`cygpath --unix "$JAVACMD"` 117 | 118 | # We build the pattern for arguments to be converted via cygpath 119 | ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` 120 | SEP="" 121 | for dir in $ROOTDIRSRAW ; do 122 | ROOTDIRS="$ROOTDIRS$SEP$dir" 123 | SEP="|" 124 | done 125 | OURCYGPATTERN="(^($ROOTDIRS))" 126 | # Add a user-defined pattern to the cygpath arguments 127 | if [ "$GRADLE_CYGPATTERN" != "" ] ; then 128 | OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" 129 | fi 130 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 131 | i=0 132 | for arg in "$@" ; do 133 | CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` 134 | CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option 135 | 136 | if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition 137 | eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` 138 | else 139 | eval `echo args$i`="\"$arg\"" 140 | fi 141 | i=$((i+1)) 142 | done 143 | case $i in 144 | (0) set -- ;; 145 | (1) set -- "$args0" ;; 146 | (2) set -- "$args0" "$args1" ;; 147 | (3) set -- "$args0" "$args1" "$args2" ;; 148 | (4) set -- "$args0" "$args1" "$args2" "$args3" ;; 149 | (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; 150 | (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; 151 | (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; 152 | (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; 153 | (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; 154 | esac 155 | fi 156 | 157 | # Escape application args 158 | save () { 159 | for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done 160 | echo " " 161 | } 162 | APP_ARGS=$(save "$@") 163 | 164 | # Collect all arguments for the java command, following the shell quoting and substitution rules 165 | eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" 166 | 167 | # by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong 168 | if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then 169 | cd "$(dirname "$0")" 170 | fi 171 | 172 | exec "$JAVACMD" "$@" 173 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @if "%DEBUG%" == "" @echo off 2 | @rem ########################################################################## 3 | @rem 4 | @rem Gradle startup script for Windows 5 | @rem 6 | @rem ########################################################################## 7 | 8 | @rem Set local scope for the variables with windows NT shell 9 | if "%OS%"=="Windows_NT" setlocal 10 | 11 | set DIRNAME=%~dp0 12 | if "%DIRNAME%" == "" set DIRNAME=. 13 | set APP_BASE_NAME=%~n0 14 | set APP_HOME=%DIRNAME% 15 | 16 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 17 | set DEFAULT_JVM_OPTS= 18 | 19 | @rem Find java.exe 20 | if defined JAVA_HOME goto findJavaFromJavaHome 21 | 22 | set JAVA_EXE=java.exe 23 | %JAVA_EXE% -version >NUL 2>&1 24 | if "%ERRORLEVEL%" == "0" goto init 25 | 26 | echo. 27 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 28 | echo. 29 | echo Please set the JAVA_HOME variable in your environment to match the 30 | echo location of your Java installation. 31 | 32 | goto fail 33 | 34 | :findJavaFromJavaHome 35 | set JAVA_HOME=%JAVA_HOME:"=% 36 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 37 | 38 | if exist "%JAVA_EXE%" goto init 39 | 40 | echo. 41 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 42 | echo. 43 | echo Please set the JAVA_HOME variable in your environment to match the 44 | echo location of your Java installation. 45 | 46 | goto fail 47 | 48 | :init 49 | @rem Get command-line arguments, handling Windows variants 50 | 51 | if not "%OS%" == "Windows_NT" goto win9xME_args 52 | 53 | :win9xME_args 54 | @rem Slurp the command line arguments. 55 | set CMD_LINE_ARGS= 56 | set _SKIP=2 57 | 58 | :win9xME_args_slurp 59 | if "x%~1" == "x" goto execute 60 | 61 | set CMD_LINE_ARGS=%* 62 | 63 | :execute 64 | @rem Setup the command line 65 | 66 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 67 | 68 | @rem Execute Gradle 69 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS% 70 | 71 | :end 72 | @rem End local scope for the variables with windows NT shell 73 | if "%ERRORLEVEL%"=="0" goto mainEnd 74 | 75 | :fail 76 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 77 | rem the _cmd.exe /c_ return code! 78 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 79 | exit /b 1 80 | 81 | :mainEnd 82 | if "%OS%"=="Windows_NT" endlocal 83 | 84 | :omega 85 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | rootProject.name = 'OmcTextDecoder' 2 | 3 | -------------------------------------------------------------------------------- /src/main/java/Entrance.java: -------------------------------------------------------------------------------- 1 | import org.apache.commons.cli.*; 2 | 3 | import java.io.File; 4 | import java.io.FileOutputStream; 5 | import java.io.IOException; 6 | import java.util.zip.ZipException; 7 | 8 | public class Entrance { 9 | private static OmcTextDecoder decoder = new OmcTextDecoder(); 10 | 11 | public static void main(String[] args) throws ParseException { 12 | Options options = new Options(); 13 | 14 | options.addOption("h", "help", false, "print this message"); 15 | options.addOption("e", "encode", false, "encode omc file"); 16 | options.addOption("d", "decode", false, "decode omc file"); 17 | options.addOption("i", "input", true, "input file or dir"); 18 | options.addOption("o", "output", true, "output file or dir"); 19 | 20 | CommandLineParser parser = new DefaultParser(); 21 | CommandLine cmd = parser.parse(options, args); 22 | 23 | 24 | File inputFile; 25 | File outputFile; 26 | 27 | boolean decode = true; 28 | 29 | if (cmd.hasOption('h') || args.length == 0) { 30 | printHelp(options); 31 | return; 32 | } 33 | 34 | if (cmd.hasOption('i')) { 35 | inputFile = new File(cmd.getOptionValue("i")); 36 | } else { 37 | printHelp(options); 38 | return; 39 | } 40 | if (cmd.hasOption("o")) { 41 | outputFile = new File(cmd.getOptionValue('o')); 42 | } else { 43 | outputFile = new File(inputFile.getParent(), "out_" + inputFile.getName()); 44 | } 45 | 46 | if (cmd.hasOption('e')) { 47 | decode = false; 48 | } 49 | 50 | decode(inputFile, outputFile, decode); 51 | } 52 | 53 | private static void decode(File in, File out, boolean decode) { 54 | if (in.isDirectory()) { 55 | File[] files = in.listFiles(); 56 | if (files != null) { 57 | for (File file : files) { 58 | decode(file, new File(out, file.getName()), decode); 59 | } 60 | } 61 | } else { 62 | decodeFile(in, out, decode); 63 | } 64 | } 65 | 66 | private static void decodeFile(File inputFile, File outputFile, boolean decode) { 67 | try { 68 | String path = inputFile.getAbsolutePath(); 69 | 70 | byte[] bytes; 71 | if (decode) 72 | bytes = decoder.decode(inputFile); 73 | else { 74 | bytes = decoder.encode(inputFile); 75 | } 76 | 77 | if (outputFile.exists()) { 78 | outputFile.delete(); 79 | } 80 | File parentFile = outputFile.getParentFile(); 81 | if (parentFile != null) { 82 | parentFile.mkdirs(); 83 | } 84 | outputFile.createNewFile(); 85 | 86 | FileOutputStream outputStream = new FileOutputStream(outputFile); 87 | outputStream.write(bytes); 88 | outputStream.close(); 89 | System.out.println("output " + outputFile.getAbsolutePath() + " success"); 90 | } catch (ZipException e) { 91 | // 92 | } catch (IOException e) { 93 | e.printStackTrace(); 94 | } 95 | } 96 | 97 | private static void printHelp(Options options) { 98 | HelpFormatter formatter = new HelpFormatter(); 99 | formatter.printHelp("java -jar -i cscfeture.xml -o cscfeture_decoded.xml", options); 100 | } 101 | } 102 | 103 | -------------------------------------------------------------------------------- /src/main/java/OmcTextDecoder.java: -------------------------------------------------------------------------------- 1 | import java.io.*; 2 | import java.util.zip.Deflater; 3 | import java.util.zip.GZIPInputStream; 4 | import java.util.zip.GZIPOutputStream; 5 | 6 | /** 7 | * decompiled from csc.apk 8 | */ 9 | public class OmcTextDecoder { 10 | private final int SALT_LENGTH = 256; 11 | private final String XML_HEADER = ">> (8 - this.shifts[i % 256]))); 255 | results[i] = (byte) (results[i] ^ this.salts[i % 256]); 256 | } 257 | return results; 258 | } 259 | 260 | private byte[] _encode(byte[] source) { 261 | byte[] results = new byte[source.length]; 262 | for (int i = 0; i < source.length; i++) { 263 | results[i] = (byte) (source[i] ^ this.salts[i % 256]); 264 | results[i] = (byte) (((results[i] & 255) >> this.shifts[i % 256]) | ((results[i] & 255) << (8 - this.shifts[i % 256]))); 265 | } 266 | return results; 267 | } 268 | 269 | private byte[] _decompressGzip(byte[] sourceGz) throws IOException { 270 | ByteArrayInputStream bis = new ByteArrayInputStream(sourceGz); 271 | GZIPInputStream gis = new GZIPInputStream(bis); 272 | ByteArrayOutputStream buffer = new ByteArrayOutputStream(); 273 | int nRead; 274 | byte[] data = new byte[1024]; 275 | while ((nRead = gis.read(data, 0, data.length)) != -1) { 276 | buffer.write(data, 0, nRead); 277 | } 278 | buffer.flush(); 279 | return buffer.toByteArray(); 280 | } 281 | 282 | private byte[] _compressGzip(byte[] data) throws IOException { 283 | ByteArrayOutputStream bos = new ByteArrayOutputStream(data.length); 284 | GZIPOutputStream gzip = new GZIPOutputStream(bos) { 285 | { 286 | this.def.setLevel(Deflater.BEST_COMPRESSION); 287 | } 288 | }; 289 | gzip.write(data); 290 | gzip.finish(); 291 | gzip.close(); 292 | byte[] compressed = bos.toByteArray(); 293 | bos.close(); 294 | return compressed; 295 | } 296 | 297 | public boolean isXmlEncoded(File featureXmlFile) { 298 | try { 299 | BufferedReader ptrRead = new BufferedReader(new FileReader(featureXmlFile)); 300 | String headerStr = ptrRead.readLine(); 301 | if (ptrRead != null) { 302 | ptrRead.close(); 303 | } 304 | if (headerStr.contains("