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use installed java instead of webservice
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,36 +1,21 @@ | ||
| package controllers | ||
|
|
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| import play.api.mvc._ | ||
| import play.api.libs.json._ | ||
| import play.api.libs.functional.syntax._ | ||
| import play.api.Logger | ||
| import models._ | ||
|
|
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| object Application extends Controller { | ||
|
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| implicit val codeReads: Reads[Code] = ( | ||
| (JsPath \ "code").read[String] and | ||
| (JsPath \ "version").read[String] | ||
| )(Code.apply _) | ||
|
|
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| def index = Action { | ||
| Ok(views.html.index("")) | ||
| } | ||
|
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| def submitCode = Action(BodyParsers.parse.json) { request => | ||
| Logger.debug("submit code") | ||
|
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| val codeResult = request.body.validate[Code] | ||
| codeResult.fold( | ||
| errors => { | ||
| BadRequest(Json.obj("status" ->"ERROR", "message" -> JsError.toFlatJson(errors))) | ||
| }, | ||
| code => { | ||
| val helper = new DisassemblerService() | ||
| val diss = helper.disassemble(code.version, code.code) | ||
| Ok(diss) | ||
| } | ||
| ) | ||
| def submitCode = Action(parse.json) { request => | ||
| (request.body \ "code").asOpt[String].map { code => | ||
| val helper = new Disassembler() | ||
| val diss = helper.disassemble(code) | ||
| Ok(diss) | ||
| }.getOrElse { | ||
| BadRequest("Missing parameter [code]") | ||
| } | ||
| } | ||
|
|
||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,161 @@ | ||
| package models | ||
| import java.util.UUID | ||
| import java.io._ | ||
| import java.nio.file._ | ||
| import java.util.regex._ | ||
| import scala.sys.process._ | ||
| import scalax.io._ | ||
|
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| class Disassembler { | ||
| val tmpDir = "/tmp/javabytes/" | ||
|
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| def disassemble(code:String):String = { | ||
| val logger = new Logger() | ||
| var error = false | ||
| var message = "" | ||
|
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| //generate UUID | ||
| val rawId = "t" + UUID.randomUUID().toString() | ||
| val id = rawId.replaceAll("-", "").replaceAll("/", "").replaceAll("\\\\", "").replaceAll(":", "") | ||
|
|
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| //create tmpDir | ||
| val userTmpDirName = tmpDir + id | ||
| val userTmpDir = createDir(userTmpDirName) | ||
|
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| //try and extract name of class | ||
| val className = extractClassname(code) | ||
| if (className == "" || className == null) { | ||
| message += clean(logger.err, userTmpDirName) | ||
| error = true | ||
| removeDir(userTmpDir) | ||
| return message | ||
| } | ||
|
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| //create tmp file | ||
| val javaFilename = userTmpDirName + "/" + className + ".java" | ||
| val classFilename = userTmpDirName + "/" + className + ".class" | ||
| val fw = new FileWriter(javaFilename) | ||
|
|
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| //write code out to that file | ||
| try { | ||
| fw.write(code) | ||
| fw.flush() | ||
| } | ||
| catch { | ||
| case e: Exception => | ||
| message += "Unable to create source.<br>" | ||
| error = true | ||
| } | ||
| finally { | ||
| fw.close() | ||
| } | ||
| if (error) return message | ||
|
|
||
| //run compiler | ||
| try { | ||
| val compilationCommand = "javac " + javaFilename | ||
| compilationCommand !! logger.log | ||
| } | ||
| catch { | ||
| case e: Exception => | ||
| message += clean(logger.err, userTmpDirName) | ||
| error = true | ||
| quietRemoveFile(javaFilename, classFilename, userTmpDir) | ||
| return message | ||
| } | ||
|
|
||
| //dissassemble | ||
| var decomp = "An unknown error has occurred" | ||
| try { | ||
| val decompCommand = "javap -c " + classFilename | ||
| decomp = decompCommand !! logger.log | ||
| decomp = clean(decomp, userTmpDirName) | ||
| } | ||
| catch { | ||
| case e: Exception => | ||
| message += clean(logger.err, userTmpDirName) | ||
| error = true | ||
| quietRemoveFile(javaFilename, classFilename, userTmpDir) | ||
| return message | ||
| } | ||
|
|
||
| //remove all junk files created | ||
| try { | ||
| removeFile(javaFilename, classFilename, userTmpDir) | ||
| } | ||
| catch { | ||
| case e: Exception => | ||
| message += "Unable to cleanup.<br>" | ||
| error = true | ||
| return message | ||
| } | ||
|
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| if (error) return message | ||
| else return decomp | ||
| } | ||
|
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| def createDir(str:String):Path = { | ||
| val folderPath = Paths.get(str) | ||
| Files.createDirectories(folderPath) | ||
| } | ||
|
|
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| def removeDir(userTmpDir:Path) = { | ||
| Files.delete(userTmpDir) | ||
| } | ||
|
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| def clean(str:StringBuilder, dirPrefix:String):String = { | ||
| clean(str.toString(), dirPrefix) | ||
| } | ||
|
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| def clean(str:String, dirPrefix:String):String = { | ||
| var decomp = str.replaceAll("\\{", "{{") | ||
| decomp = decomp.replaceAll(dirPrefix+ "/", "") | ||
| decomp = decomp.replaceAll("\\}", "}}") | ||
| decomp = decomp.replaceAll("\"", "'") | ||
| decomp = decomp.replaceAll("\n", "<br>") | ||
| decomp = decomp.replaceAll("\t", " ") | ||
| decomp = decomp.replaceAll("\u005E", " ") | ||
| decomp = decomp.replaceAll("\u2038", " ") | ||
| decomp = decomp.replaceAll("\\^", " ") | ||
| decomp = decomp.replaceAll("\\s\\s\\s\\s\\s+", "<br>") | ||
| decomp = decomp.replaceAll("\u001A", "") | ||
| decomp = decomp.replaceAll("^\\s+", "") | ||
| decomp | ||
| } | ||
|
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| def quietRemoveFile(filename:String, classname:String, userTmpDir:Path) = { | ||
| try { | ||
| val sourceFile = new File(filename) | ||
| sourceFile.delete() | ||
|
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| val classFile = new File(classname) | ||
| classFile.delete() | ||
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| Files.delete(userTmpDir) | ||
| } | ||
| catch { | ||
| case e: Exception => System.out.println("Couldn't remove file") | ||
| } | ||
| } | ||
|
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| def removeFile(filename:String, classname:String, userTmpDir:Path) = { | ||
| val sourceFile = new File(filename) | ||
| sourceFile.delete() | ||
|
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| val classFile = new File(classname) | ||
| classFile.delete() | ||
|
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| Files.delete(userTmpDir) | ||
| } | ||
|
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| def extractClassname(code:String):String = { | ||
| val pattern = Pattern.compile("\\s*(public|private)\\s+class\\s+(\\w+)\\s+((extends\\s+\\w+)|(implements\\s+\\w+( ,\\w+)*))?\\s*\\{"); | ||
| val m = pattern.matcher(code) | ||
|
|
||
| if (m.find()) { | ||
| m.group(2) | ||
| } else { | ||
| null | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| package models | ||
| import sys.process._ | ||
|
|
||
| class Logger { | ||
| val out = new StringBuilder | ||
| val err = new StringBuilder | ||
|
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| val log = ProcessLogger( | ||
| (o: String) => out.append(o), | ||
| (e: String) => err.append(e) | ||
| ) | ||
|
|
||
| def getLog(): ProcessLogger = { | ||
| return log | ||
| } | ||
| } |
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