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GT-3481 - Gnu Demangler - Checkpoint 2 - Most docs and tests done;

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analyzer test remains
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dragonmacher 2020-02-12 18:21:10 -05:00
parent b774ecb2d6
commit b4ce3012d7
55 changed files with 854 additions and 1283 deletions
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95
Ghidra/Features/GnuDemangler/ghidra_scripts/DemangleElfWithOptionScript.java
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@ -19,17 +19,10 @@
//
//@category Examples.Demangler
import java.io.*;
import ghidra.app.script.GhidraScript;
import ghidra.app.util.demangler.DemangledObject;
import ghidra.app.util.demangler.DemanglerOptions;
import ghidra.app.util.demangler.gnu.GnuDemanglerNativeProcess;
import ghidra.app.util.demangler.gnu.GnuDemanglerParser;
import ghidra.app.util.opinion.ElfLoader;
import ghidra.app.util.opinion.MachoLoader;
import ghidra.framework.*;
import ghidra.program.model.lang.CompilerSpec;
import ghidra.app.util.demangler.gnu.GnuDemangler;
import ghidra.app.util.demangler.gnu.GnuDemanglerOptions;
import ghidra.program.model.symbol.Symbol;
public class DemangleElfWithOptionScript extends GhidraScript {
@ -37,8 +30,9 @@ public class DemangleElfWithOptionScript extends GhidraScript {
@Override
protected void run() throws Exception {
String executableFormat = currentProgram.getExecutableFormat();
if (!canDemangle(executableFormat)) {
GnuDemangler demangler = new GnuDemangler();
if (!demangler.canDemangle(currentProgram)) {
String executableFormat = currentProgram.getExecutableFormat();
println("Cannot use the elf demangling options for executable format: " +
executableFormat);
return;
@ -55,81 +49,22 @@ public class DemangleElfWithOptionScript extends GhidraScript {
String mangled = symbol.getName();
Process process = createProcess(executableFormat);
GnuDemanglerOptions options = new GnuDemanglerOptions();
options.setDoDisassembly(false);
options.setDemanglerApplicationArguments("-s auto");
InputStream in = process.getInputStream();
OutputStream out = process.getOutputStream();
/*
// for older formats use the deprecated demangler
options.setDemanglerName(GnuDemanglerOptions.GNU_DEMANGLER_V2_24);
options.setDemanglerApplicationArguments("-s arm");
*/
BufferedReader input = new BufferedReader(new InputStreamReader(in));
PrintWriter output = new PrintWriter(out);
output.println(mangled);
output.flush();
String demangled = input.readLine();
println("demangled: " + demangled);
GnuDemanglerParser parser = new GnuDemanglerParser(null);
DemangledObject demangledObject = parser.parse(mangled, demangled);
DemangledObject demangledObject = demangler.demangle(mangled, options);
if (demangledObject == null) {
println("Could not demangle: " + mangled);
return;
}
// TODO change to GnuDemanglerOptions
DemanglerOptions options = new DemanglerOptions();
options.setDoDisassembly(false);
options.setApplySignature(true);
options.setDemangleOnlyKnownPatterns(true);
if (!demangledObject.applyTo(currentProgram, currentAddress, options, monitor)) {
println("Failed to apply demangled data for " + mangled);
}
println("Succesfully demangled " + mangled + " to " + demangled);
}
private boolean canDemangle(String executableFormat) {
//check if language is GCC - this is not altogether correct !
// Objective-C and other non-GCC based symbols may be handled improperly
if (isELF(executableFormat) || isMacho(executableFormat)) {
return true;
}
CompilerSpec compilerSpec = currentProgram.getCompilerSpec();
if (compilerSpec.getCompilerSpecID()
.getIdAsString()
.toLowerCase()
.indexOf("windows") == -1) {
return true;
}
return false;
}
private boolean isELF(String executableFormat) {
return executableFormat != null && executableFormat.indexOf(ElfLoader.ELF_NAME) != -1;
}
private boolean isMacho(String executableFormat) {
return executableFormat != null && executableFormat.indexOf(MachoLoader.MACH_O_NAME) != -1;
}
/// TODO this is here because we did not support program arguments. replace this code
private Process createProcess(String executableName) throws Exception {
String demanglerName = GnuDemanglerNativeProcess.DEMANGLER_GNU;
OperatingSystem OS = Platform.CURRENT_PLATFORM.getOperatingSystem();
String demanglerExe =
(OS == OperatingSystem.WINDOWS) ? demanglerName + ".exe" : demanglerName;
File commandPath = Application.getOSFile("GnuDemangler", demanglerExe);
//
// This is where special options are to be passed. Put your own here as necessary.
//
String[] command = new String[] { commandPath.getAbsolutePath(), "-s", "arm" };
Process process = Runtime.getRuntime().exec(command);
return process;
println("Succesfully demangled " + mangled + " to " + demangledObject);
}
}