public ContentProviderTransform() {
// init set of all content provider harness fields
for (SootClass clz : Harness.v().getCreatedClasses()) {
if (Hierarchy.inheritsFromAndroidComponent(AndroidComponents.CONTENT_PROVIDER, clz)) {
allHarnessCPFlds.add(Harness.v().getFieldForCreatedClass(clz));
}
}
}
/**
* For a Uri alloc node, try to find the set of target content providers targeted by the resolved
* va values for the uri. If invalidated or unresolved, then target all providers.
*/
private boolean addToTargets(IAllocNode node, Set<SootField> targetCPFields, Stmt stmt) {
try {
Set<String> uriValues = new HashSet<String>();
SootField field = ((RefType) node.getType()).getSootClass().getFieldByName("uriString");
boolean isResolved = ValueAnalysis.v().getStringFieldValues(node, field, uriValues);
if (isResolved) {
for (String uriString : uriValues) {
URI uri = new URI(uriString);
String authority = uri.getAuthority();
for (Provider p : Resources.v().getManifest().providers) {
if (p.definesAuthority(authority)) {
// this provider is a target for the uri,
// so find the field for it
SootClass pClass = p.getSootClass();
targetCPFields.add(Harness.v().getFieldForCreatedClass(pClass));
logger.info(
"Found target for Content Provider stmt {}, uri {}, target {}",
stmt,
uriString,
pClass);
}
}
}
return true;
} else {
targetCPFields.addAll(allHarnessCPFlds);
return false;
}
} catch (Exception e) {
// just in case anything goes wrong with va resolution
targetCPFields.addAll(allHarnessCPFlds);
return false;
}
}