/*
* [The "BSD licence"]
* Copyright (c) 2010 Ben Gruver (JesusFreke)
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.jf.smali;
import org.jf.smali.smaliLexer;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.LinkedHashSet;
import java.util.Properties;
import java.util.Set;
import org.antlr.runtime.ANTLRFileStream;
import org.antlr.runtime.CommonTokenStream;
import org.antlr.runtime.Token;
import org.antlr.runtime.TokenSource;
import org.antlr.runtime.tree.CommonTree;
import org.antlr.runtime.tree.CommonTreeNodeStream;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.Option;
import org.apache.commons.cli.OptionBuilder;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.commons.cli.PosixParser;
import org.jf.dexlib.CodeItem;
import org.jf.dexlib.DexFile;
import org.jf.dexlib.Util.ByteArrayAnnotatedOutput;
import org.jf.util.ConsoleUtil;
import org.jf.util.smaliHelpFormatter;
/**
* Main class for smali. It recognizes enough options to be able to dispatch
* to the right "actual" main.
*/
public class main {
public static final String VERSION;
private final static Options basicOptions;
private final static Options debugOptions;
private final static Options options;
static {
basicOptions = new Options();
debugOptions = new Options();
options = new Options();
buildOptions();
InputStream templateStream = main.class.getClassLoader().getResourceAsStream("smali.properties");
Properties properties = new Properties();
String version = "(unknown)";
try {
properties.load(templateStream);
version = properties.getProperty("application.version");
} catch (IOException ex) {
}
VERSION = version;
}
/**
* This class is uninstantiable.
*/
private main() {
}
/**
* Run!
*/
public static void main(String[] args) {
CommandLineParser parser = new PosixParser();
CommandLine commandLine;
try {
commandLine = parser.parse(options, args);
} catch (ParseException ex) {
usage();
return;
}
boolean sort = false;
boolean fixStringConst = true;
boolean fixGoto = true;
boolean verboseErrors = false;
boolean oldLexer = false;
boolean printTokens = false;
String outputDexFile = "out.dex";
String dumpFileName = null;
String[] remainingArgs = commandLine.getArgs();
Option[] options = commandLine.getOptions();
for (int i=0; i<options.length; i++) {
Option option = options[i];
String opt = option.getOpt();
switch (opt.charAt(0)) {
case 'v':
version();
return;
case '?':
while (++i < options.length) {
if (options[i].getOpt().charAt(0) == '?') {
usage(true);
return;
}
}
usage(false);
return;
case 'o':
outputDexFile = commandLine.getOptionValue("o");
break;
case 'D':
dumpFileName = commandLine.getOptionValue("D", outputDexFile + ".dump");
break;
case 'S':
sort = true;
break;
case 'C':
fixStringConst = false;
break;
case 'G':
fixGoto = false;
break;
case 'V':
verboseErrors = true;
break;
case 'L':
oldLexer = true;
break;
case 'T':
printTokens = true;
break;
default:
assert false;
}
}
if (remainingArgs.length == 0) {
usage();
return;
}
try {
LinkedHashSet<File> filesToProcess = new LinkedHashSet<File>();
for (String arg: remainingArgs) {
File argFile = new File(arg);
if (!argFile.exists()) {
throw new RuntimeException("Cannot find file or directory \"" + arg + "\"");
}
if (argFile.isDirectory()) {
getSmaliFilesInDir(argFile, filesToProcess);
} else if (argFile.isFile()) {
filesToProcess.add(argFile);
}
}
DexFile dexFile = new DexFile();
boolean errors = false;
for (File file: filesToProcess) {
if (!assembleSmaliFile(file, dexFile, verboseErrors, oldLexer, printTokens)) {
errors = true;
}
}
if (errors) {
System.exit(1);
}
if (sort) {
dexFile.setSortAllItems(true);
}
if (fixStringConst || fixGoto) {
fixInstructions(dexFile, fixStringConst, fixGoto);
}
dexFile.place();
ByteArrayAnnotatedOutput out = new ByteArrayAnnotatedOutput();
if (dumpFileName != null) {
out.enableAnnotations(120, true);
}
dexFile.writeTo(out);
byte[] bytes = out.toByteArray();
DexFile.calcSignature(bytes);
DexFile.calcChecksum(bytes);
if (dumpFileName != null) {
out.finishAnnotating();
FileWriter fileWriter = new FileWriter(dumpFileName);
out.writeAnnotationsTo(fileWriter);
fileWriter.close();
}
FileOutputStream fileOutputStream = new FileOutputStream(outputDexFile);
fileOutputStream.write(bytes);
fileOutputStream.close();
} catch (RuntimeException ex) {
System.err.println("\nUNEXPECTED TOP-LEVEL EXCEPTION:");
ex.printStackTrace();
System.exit(2);
} catch (Throwable ex) {
System.err.println("\nUNEXPECTED TOP-LEVEL ERROR:");
ex.printStackTrace();
System.exit(3);
}
}
private static void getSmaliFilesInDir(File dir, Set<File> smaliFiles) {
for(File file: dir.listFiles()) {
if (file.isDirectory()) {
getSmaliFilesInDir(file, smaliFiles);
} else if (file.getName().endsWith(".smali")) {
smaliFiles.add(file);
}
}
}
private static void fixInstructions(DexFile dexFile, boolean fixStringConst, boolean fixGoto) {
dexFile.place();
byte[] newInsns = null;
for (CodeItem codeItem: dexFile.CodeItemsSection.getItems()) {
codeItem.fixInstructions(fixStringConst, fixGoto);
}
}
private static boolean assembleSmaliFile(File smaliFile, DexFile dexFile, boolean verboseErrors, boolean oldLexer,
boolean printTokens)
throws Exception {
CommonTokenStream tokens;
boolean lexerErrors = false;
LexerErrorInterface lexer;
if (oldLexer) {
ANTLRFileStream input = new ANTLRFileStream(smaliFile.getAbsolutePath(), "UTF-8");
input.name = smaliFile.getAbsolutePath();
lexer = new smaliLexer(input);
tokens = new CommonTokenStream((TokenSource)lexer);
} else {
FileInputStream fis = new FileInputStream(smaliFile.getAbsolutePath());
InputStreamReader reader = new InputStreamReader(fis, "UTF-8");
lexer = new smaliFlexLexer(reader);
((smaliFlexLexer)lexer).setSourceFile(smaliFile);
tokens = new CommonTokenStream((TokenSource)lexer);
}
if (printTokens) {
tokens.getTokens();
for (int i=0; i<tokens.size(); i++) {
Token token = tokens.get(i);
if (token.getChannel() == smaliLexer.HIDDEN) {
continue;
}
System.out.println(smaliParser.tokenNames[token.getType()] + ": " + token.getText());
}
}
smaliParser parser = new smaliParser(tokens);
parser.setVerboseErrors(verboseErrors);
smaliParser.smali_file_return result = parser.smali_file();
if (parser.getNumberOfSyntaxErrors() > 0 || lexer.getNumberOfSyntaxErrors() > 0) {
return false;
}
CommonTree t = (CommonTree) result.getTree();
CommonTreeNodeStream treeStream = new CommonTreeNodeStream(t);
treeStream.setTokenStream(tokens);
smaliTreeWalker dexGen = new smaliTreeWalker(treeStream);
dexGen.dexFile = dexFile;
dexGen.smali_file();
if (dexGen.getNumberOfSyntaxErrors() > 0) {
return false;
}
return true;
}
/**
* Prints the usage message.
*/
private static void usage(boolean printDebugOptions) {
smaliHelpFormatter formatter = new smaliHelpFormatter();
formatter.setWidth(ConsoleUtil.getConsoleWidth());
formatter.printHelp("java -jar smali.jar [options] [--] [<smali-file>|folder]*",
"assembles a set of smali files into a dex file", basicOptions, "");
if (printDebugOptions) {
System.out.println();
System.out.println("Debug Options:");
StringBuffer sb = new StringBuffer();
formatter.renderOptions(sb, debugOptions);
System.out.println(sb.toString());
}
}
private static void usage() {
usage(false);
}
/**
* Prints the version message.
*/
private static void version() {
System.out.println("smali " + VERSION + " (http://smali.googlecode.com)");
System.out.println("Copyright (C) 2010 Ben Gruver (JesusFreke@JesusFreke.com)");
System.out.println("BSD license (http://www.opensource.org/licenses/bsd-license.php)");
System.exit(0);
}
private static void buildOptions() {
Option versionOption = OptionBuilder.withLongOpt("version")
.withDescription("prints the version then exits")
.create("v");
Option helpOption = OptionBuilder.withLongOpt("help")
.withDescription("prints the help message then exits. Specify twice for debug options")
.create("?");
Option outputOption = OptionBuilder.withLongOpt("output")
.withDescription("the name of the dex file that will be written. The default is out.dex")
.hasArg()
.withArgName("FILE")
.create("o");
Option dumpOption = OptionBuilder.withLongOpt("dump-to")
.withDescription("additionally writes a dump of written dex file to FILE (<dexfile>.dump by default)")
.hasOptionalArg()
.withArgName("FILE")
.create("D");
Option sortOption = OptionBuilder.withLongOpt("sort")
.withDescription("sort the items in the dex file into a canonical order before writing")
.create("S");
Option noFixStringConstOption = OptionBuilder.withLongOpt("no-fix-string-const")
.withDescription("Don't replace string-const instructions with string-const/jumbo where appropriate")
.create("C");
Option noFixGotoOption = OptionBuilder.withLongOpt("no-fix-goto")
.withDescription("Don't replace goto type instructions with a larger version where appropriate")
.create("G");
Option verboseErrorsOption = OptionBuilder.withLongOpt("verbose-errors")
.withDescription("Generate verbose error messages")
.create("V");
Option oldLexerOption = OptionBuilder.withLongOpt("old-lexer")
.withDescription("Use the old lexer")
.create("L");
Option printTokensOption = OptionBuilder.withLongOpt("print-tokens")
.withDescription("Print the name and text of each token")
.create("T");
basicOptions.addOption(versionOption);
basicOptions.addOption(helpOption);
basicOptions.addOption(outputOption);
debugOptions.addOption(dumpOption);
debugOptions.addOption(sortOption);
debugOptions.addOption(noFixStringConstOption);
debugOptions.addOption(noFixGotoOption);
debugOptions.addOption(verboseErrorsOption);
debugOptions.addOption(oldLexerOption);
debugOptions.addOption(printTokensOption);
for (Object option: basicOptions.getOptions()) {
options.addOption((Option)option);
}
for (Object option: debugOptions.getOptions()) {
options.addOption((Option)option);
}
}
}