/**
* Resolve the concrete target of a special invoke using our modified semantics for special invoke
* expression.
*/
private SootMethod resolveSpecialInvokeTarget(SpecialInvokeExpr si) {
SootMethod target = null;
try {
target = SootUtils.resolve(si.getMethodRef());
} catch (CannotFindMethodException e) {
logger.error("Cannot find concrete method target for special invoke: {}", si);
return null;
}
String targetSubSig = target.getSubSignature();
SootClass current = target.getDeclaringClass();
while (true) {
if (current.declaresMethod(targetSubSig)) {
return current.getMethod(targetSubSig);
}
// not a match in current, try superclass on next loop
if (current.hasSuperclass()) current = current.getSuperclass();
else {
logger.error("Cannot find concrete method target for special invoke: {}", si);
droidsafe.main.Main.exit(1);
return null;
}
}
}
/** Dumps out the call chain in json format * */
public void dump_json(PrintStream fp, String indent) {
fp.printf("%s{ %s,\n", indent, json_field("type", type));
fp.printf("%s %s,\n", indent, json_field("link", link));
String sig = method.getSignature();
fp.printf("%s %s,\n", indent, json_field("signature", sig));
if (stmt != null) {
SootMethodRef invoke = stmt.getInvokeExpr().getMethodRef();
String invokeSig;
try {
SootMethod concrete = SootUtils.resolve(stmt.getInvokeExpr().getMethodRef());
invokeSig = concrete.getSignature();
} catch (CannotFindMethodException e1) {
logger.debug("Cannot find concrete method for {} in SourceCallChainInfo.dump_json()", stmt);
invokeSig = invoke.getSignature();
}
if (!invokeSig.equals(sig)) {
fp.printf("%s %s,\n", indent, json_field("source-signature", invokeSig));
}
}
SourceLocationTag slt =
(stmt == null) ? SootUtils.getMethodLocation(method) : getSourceLocation(stmt);
if (slt != null) {
fp.printf("%s %s", indent, json_field("src-loc"));
fp.printf(
"{ %s, %s},\n", json_field("class", slt.getClz()), json_field("line", slt.getLine()));
}
fp.printf("%s %s,\n", indent, json_field("syscalls", syscalls));
fp.printf("%s %s,\n", indent, json_field("calls", calls));
if ((contents != null) && (contents.length > 0)) {
fp.printf("%s %s,\n", indent, json_field("score", score));
fp.printf("%s %s [\n", indent, json_field("contents"));
String delim = "";
for (SourceCallChainInfo cci : contents) {
fp.print(delim);
delim = ",\n";
cci.dump_json(fp, indent + " ");
}
fp.printf("\n%s]}", indent);
} else {
fp.printf("%s %s\n", indent, json_field("score", score));
fp.printf("%s}", indent);
}
}