DexMethod* find_collision_excepting(const DexMethod* except,
const DexString* name,
const DexProto* proto,
const DexClass* cls,
bool is_virtual,
bool check_direct) {
for (auto& method : cls->get_dmethods()) {
if (match(name, proto, method) && method != except) return method;
}
for (auto& method : cls->get_vmethods()) {
if (match(name, proto, method) && method != except) return method;
}
if (!is_virtual) return nullptr;
auto super = type_class(cls->get_super_class());
if (super) {
auto method = resolve_virtual(super, name, proto);
if (method && method != except) return method;
}
TypeVector children;
get_all_children(cls->get_type(), children);
for (const auto& child : children) {
auto vmethod = check_vmethods(name, proto, child);
if (vmethod && vmethod != except) return vmethod;
if (check_direct) {
auto dmethod = check_dmethods(name, proto, child);
if (dmethod && dmethod != except) return dmethod;
}
}
return nullptr;
}
void RenameClassesPass::run_pass(DexStoresVector& stores,
ConfigFiles& cfg,
PassManager& mgr) {
const JsonWrapper& json_cfg = cfg.get_json_config();
if (json_cfg.get("emit_name_based_locators", false)) {
// TODO: Purge the old RenameClassesPass entirely everywhere.
fprintf(stderr,
"[RenameClassesPass] error: Configuration option "
"emit_locator_strings is not compatible with RenameClassesPass. "
"Upgrade to RenameClassesPassV2 instead.\n");
exit(EXIT_FAILURE);
}
auto scope = build_class_scope(stores);
ClassHierarchy ch = build_type_hierarchy(scope);
std::unordered_set<const DexType*> untouchables;
for (const auto& base : m_untouchable_hierarchies) {
auto base_type = DexType::get_type(base.c_str());
if (base_type != nullptr) {
untouchables.insert(base_type);
TypeSet children;
get_all_children(ch, base_type, children);
untouchables.insert(children.begin(), children.end());
}
}
mgr.incr_metric(METRIC_CLASSES_IN_SCOPE, scope.size());
rename_classes(
scope, m_pre_filter_whitelist, m_post_filter_whitelist,
untouchables, m_rename_annotations, mgr);
TRACE(RENAME, 1,
"renamed classes: %d anon classes, %d from single char patterns, "
"%d from multi char patterns\n",
match_inner,
match_short,
match_long);
TRACE(RENAME, 1, "String savings, at least %d bytes \n",
base_strings_size - ren_strings_size);
}
void RenameClassesPass::run_pass(DexClassesVector& dexen, ConfigFiles& cfg) {
auto scope = build_class_scope(dexen);
std::unordered_set<const DexType*> untouchables;
for (const auto& base : m_untouchable_hierarchies) {
auto base_type = DexType::get_type(base.c_str());
if (base_type != nullptr) {
untouchables.insert(base_type);
TypeVector children;
get_all_children(base_type, children);
untouchables.insert(children.begin(), children.end());
}
}
rename_classes(
scope, m_pre_filter_whitelist, m_post_filter_whitelist, m_path,
untouchables, cfg.get_proguard_map(), m_rename_annotations);
TRACE(RENAME, 1,
"renamed classes: %d anon classes, %d from single char patterns, "
"%d from multi char patterns\n",
match_inner,
match_short,
match_long);
TRACE(RENAME, 1, "String savings, at least %d bytes \n",
base_strings_size - ren_strings_size);
}
void search_hierarchy_for_matches(DexMethod* bridge, DexMethod* bridgee) {
/*
* Direct reference. The only one if it's non-virtual.
*/
auto clstype = bridgee->get_class();
auto name = bridgee->get_name();
auto proto = bridgee->get_proto();
TRACE(BRIDGE, 5, " %s %s %s\n", SHOW(clstype), SHOW(name), SHOW(proto));
m_potential_bridgee_refs.emplace(MethodRef(clstype, name, proto), bridge);
if (!bridgee->is_virtual()) return;
/*
* Search super classes
*
* A bridge method in a derived class may be referred to using the name
* of a super class if a method with a matching signature is defined in
* that super class.
*
* To build the set of potential matches, we accumulate potential refs in
* maybe_refs, and when we find a matching signature in a super class, we
* add everything in maybe_refs to the set.
*/
std::vector<std::pair<MethodRef, DexMethod*>> maybe_refs;
for (auto super = type_class(type_class(clstype)->get_super_class());
super != nullptr;
super = type_class(super->get_super_class())) {
maybe_refs.emplace_back(
MethodRef(super->get_type(), name, proto), bridge);
for (auto vmethod : super->get_vmethods()) {
if (signature_matches(bridgee, vmethod)) {
for (auto DEBUG_ONLY refp : maybe_refs) {
TRACE(BRIDGE,
5,
" %s %s %s\n",
SHOW(std::get<0>(refp.first)),
SHOW(std::get<1>(refp.first)),
SHOW(std::get<2>(refp.first)));
}
m_potential_bridgee_refs.insert(maybe_refs.begin(), maybe_refs.end());
maybe_refs.clear();
}
}
}
/*
* Search sub classes
*
* Easy. Any subclass can refer to the bridgee.
*/
TypeVector subclasses;
get_all_children(clstype, subclasses);
for (auto subclass : subclasses) {
m_potential_bridgee_refs.emplace(MethodRef(subclass, name, proto),
bridge);
TRACE(BRIDGE,
5,
" %s %s %s\n",
SHOW(subclass),
SHOW(name),
SHOW(proto));
}
}
