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BundleResources.cpp
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/*
* Copyright (c) Meta Platforms, Inc. and affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
// TODO (T91001948): Integrate protobuf dependency in supported platforms for
// open source
#include <cstddef>
#include <memory>
#ifdef HAS_PROTOBUF
#include "BundleResources.h"
#include <boost/filesystem.hpp>
#include <boost/optional.hpp>
#include <boost/range/iterator_range.hpp>
#include <fstream>
#include <iomanip>
#include <map>
#include <queue>
#include <stdexcept>
#include <string>
#include <google/protobuf/descriptor.h>
#include <google/protobuf/io/coded_stream.h>
#include <google/protobuf/message.h>
#include <google/protobuf/text_format.h>
#include "Debug.h"
#include "DetectBundle.h"
#include "DexUtil.h"
#include "ReadMaybeMapped.h"
#include "RedexMappedFile.h"
#include "RedexResources.h"
#include "Trace.h"
#include "androidfw/LocaleValue.h"
#include "androidfw/ResourceTypes.h"
namespace {
#define MAKE_RES_ID(package, type, entry) \
((PACKAGE_MASK_BIT & ((package) << PACKAGE_INDEX_BIT_SHIFT)) | \
(TYPE_MASK_BIT & ((type) << TYPE_INDEX_BIT_SHIFT)) | \
(ENTRY_MASK_BIT & (entry)))
void read_protobuf_file_contents(
const std::string& file,
const std::function<void(google::protobuf::io::CodedInputStream&, size_t)>&
fn) {
redex::read_file_with_contents(file, [&](const char* data, size_t size) {
if (size == 0) {
fprintf(stderr, "Unable to read protobuf file: %s\n", file.c_str());
return;
}
google::protobuf::io::CodedInputStream input(
(const google::protobuf::uint8*)data, size);
fn(input, size);
});
}
bool has_attribute(const aapt::pb::XmlElement& element,
const std::string& name) {
for (const aapt::pb::XmlAttribute& pb_attr : element.attribute()) {
if (pb_attr.name() == name) {
return true;
}
}
return false;
}
bool has_primitive_attribute(const aapt::pb::XmlElement& element,
const std::string& name,
const aapt::pb::Primitive::OneofValueCase type) {
for (const aapt::pb::XmlAttribute& pb_attr : element.attribute()) {
if (pb_attr.name() == name) {
if (pb_attr.has_compiled_item()) {
const auto& pb_item = pb_attr.compiled_item();
if (pb_item.has_prim() && pb_item.prim().oneof_value_case() == type) {
return true;
}
}
return false;
}
}
return false;
}
int get_int_attribute_value(const aapt::pb::XmlElement& element,
const std::string& name) {
for (const aapt::pb::XmlAttribute& pb_attr : element.attribute()) {
if (pb_attr.name() == name) {
if (pb_attr.has_compiled_item()) {
const auto& pb_item = pb_attr.compiled_item();
if (pb_item.has_prim() && pb_item.prim().oneof_value_case() ==
aapt::pb::Primitive::kIntDecimalValue) {
return pb_item.prim().int_decimal_value();
}
}
}
}
throw std::runtime_error("Expected element " + element.name() +
" to have an int attribute " + name);
}
bool get_bool_attribute_value(const aapt::pb::XmlElement& element,
const std::string& name,
bool default_value) {
for (const aapt::pb::XmlAttribute& pb_attr : element.attribute()) {
if (pb_attr.name() == name) {
if (pb_attr.has_compiled_item()) {
const auto& pb_item = pb_attr.compiled_item();
if (pb_item.has_prim() && pb_item.prim().oneof_value_case() ==
aapt::pb::Primitive::kBooleanValue) {
return pb_item.prim().boolean_value();
}
}
return default_value;
}
}
return default_value;
}
std::string get_string_attribute_value(const aapt::pb::XmlElement& element,
const std::string& name) {
for (const aapt::pb::XmlAttribute& pb_attr : element.attribute()) {
if (pb_attr.name() == name) {
always_assert_log(!pb_attr.has_compiled_item(),
"Attribute %s expected to be a string!",
name.c_str());
return pb_attr.value();
}
}
return std::string("");
}
// Apply callback to element and its descendants, stopping if/when callback
// returns false
void traverse_element_and_children(
const aapt::pb::XmlElement& start,
const std::function<bool(const aapt::pb::XmlElement&)>& callback) {
std::queue<aapt::pb::XmlElement> q;
q.push(start);
while (!q.empty()) {
const auto& front = q.front();
if (!callback(front)) {
return;
}
for (const aapt::pb::XmlNode& pb_child : front.child()) {
if (pb_child.node_case() == aapt::pb::XmlNode::NodeCase::kElement) {
q.push(pb_child.element());
}
}
q.pop();
}
}
// Look for <search_tag> within the descendants of the given XML Node
bool find_nested_tag(const std::string& search_tag,
const aapt::pb::XmlElement& start) {
bool find_result = false;
traverse_element_and_children(
start, [&](const aapt::pb::XmlElement& element) {
bool keep_going = true;
if (&start != &element && element.name() == search_tag) {
find_result = true;
keep_going = false;
}
return keep_going;
});
return find_result;
}
inline std::string fully_qualified_external(const std::string& package_name,
const std::string& value) {
if (value.empty()) {
return value;
}
if (value.at(0) == '.') {
return java_names::external_to_internal(package_name + value);
}
return java_names::external_to_internal(value);
}
// Traverse a compound value message, and return a list of Item defined in
// this message.
std::vector<aapt::pb::Item> get_items_from_CV(
const aapt::pb::CompoundValue& comp_value) {
std::vector<aapt::pb::Item> ret;
if (comp_value.has_style()) {
// Style style -> Entry entry -> Item item.
const auto& entries = comp_value.style().entry();
for (int n = 0; n < entries.size(); ++n) {
if (entries[n].has_item()) {
ret.push_back(entries[n].item());
}
}
} else if (comp_value.has_array()) {
// Array array -> Element element -> Item item.
const auto& elements = comp_value.array().element();
for (int n = 0; n < elements.size(); ++n) {
if (elements[n].has_item()) {
ret.push_back(elements[n].item());
}
}
} else if (comp_value.has_plural()) {
// Plural plural -> Entry entry -> Item item.
const auto& entries = comp_value.plural().entry();
for (int n = 0; n < entries.size(); ++n) {
if (entries[n].has_item()) {
ret.push_back(entries[n].item());
}
}
}
return ret;
}
// Traverse a compound value message, and return a list of Reference messages
// used in this message.
std::vector<aapt::pb::Reference> get_references(
const aapt::pb::CompoundValue& comp_value) {
std::vector<aapt::pb::Reference> ret;
// Find refs from Item message.
const auto& items = get_items_from_CV(comp_value);
for (size_t i = 0; i < items.size(); i++) {
if (items[i].has_ref()) {
ret.push_back(items[i].ref());
}
}
// Find refs from other types of messages.
if (comp_value.has_attr()) {
// Attribute attr -> Symbol symbol -> Reference name.
const auto& symbols = comp_value.attr().symbol();
for (int i = 0; i < symbols.size(); i++) {
if (symbols[i].has_name()) {
ret.push_back(symbols[i].name());
}
}
} else if (comp_value.has_style()) {
// Style style -> Entry entry -> Reference key.
const auto& entries = comp_value.style().entry();
for (int i = 0; i < entries.size(); i++) {
if (entries[i].has_key()) {
ret.push_back(entries[i].key());
}
}
// Style style -> Reference parent.
if (comp_value.style().has_parent()) {
ret.push_back(comp_value.style().parent());
}
} else if (comp_value.has_styleable()) {
// Styleable styleable -> Entry entry -> Reference attr.
const auto& entries = comp_value.styleable().entry();
for (int i = 0; i < entries.size(); i++) {
if (entries[i].has_attr()) {
ret.push_back(entries[i].attr());
}
}
}
return ret;
}
void read_single_manifest(const std::string& manifest,
ManifestClassInfo* manifest_classes) {
TRACE(RES, 1, "Reading proto manifest at %s", manifest.c_str());
read_protobuf_file_contents(
manifest,
[&](google::protobuf::io::CodedInputStream& input, size_t size) {
std::unordered_map<std::string, ComponentTag> string_to_tag{
{"activity", ComponentTag::Activity},
{"activity-alias", ComponentTag::ActivityAlias},
{"provider", ComponentTag::Provider},
{"receiver", ComponentTag::Receiver},
{"service", ComponentTag::Service},
};
aapt::pb::XmlNode pb_node;
bool read_finish = pb_node.ParseFromCodedStream(&input);
always_assert_log(read_finish, "BundleResoource failed to read %s",
manifest.c_str());
if (pb_node.has_element() && pb_node.element().name() == "manifest") {
const auto& manifest_element = pb_node.element();
auto package_name =
get_string_attribute_value(manifest_element, "package");
traverse_element_and_children(
manifest_element, [&](const aapt::pb::XmlElement& element) {
const auto& tag = element.name();
if (tag == "application") {
auto classname = get_string_attribute_value(element, "name");
if (!classname.empty()) {
manifest_classes->application_classes.emplace(
fully_qualified_external(package_name, classname));
}
auto app_factory_cls = get_string_attribute_value(
element, "appComponentFactory");
if (!app_factory_cls.empty()) {
manifest_classes->application_classes.emplace(
fully_qualified_external(package_name,
app_factory_cls));
}
} else if (tag == "instrumentation") {
auto classname = get_string_attribute_value(element, "name");
always_assert(!classname.empty());
manifest_classes->instrumentation_classes.emplace(
fully_qualified_external(package_name, classname));
} else if (string_to_tag.count(tag)) {
std::string classname = get_string_attribute_value(
element,
tag != "activity-alias" ? "name" : "targetActivity");
always_assert(!classname.empty());
bool has_exported_attribute = has_primitive_attribute(
element, "exported", aapt::pb::Primitive::kBooleanValue);
bool has_permission_attribute =
has_attribute(element, "permission");
bool has_protection_level_attribute =
has_attribute(element, "protectionLevel");
bool is_exported =
get_bool_attribute_value(element, "exported",
/* default_value */ false);
BooleanXMLAttribute export_attribute;
if (has_exported_attribute) {
if (is_exported) {
export_attribute = BooleanXMLAttribute::True;
} else {
export_attribute = BooleanXMLAttribute::False;
}
} else {
export_attribute = BooleanXMLAttribute::Undefined;
}
// NOTE: This logic is analogous to the APK manifest reading
// code, which is wrong. This should be a bitmask, not a
// string. Returning the same messed up values here to at
// least be consistent for now.
std::string permission_attribute;
std::string protection_level_attribute;
if (has_permission_attribute) {
permission_attribute =
get_string_attribute_value(element, "permission");
}
if (has_protection_level_attribute) {
protection_level_attribute =
get_string_attribute_value(element, "protectionLevel");
}
ComponentTagInfo tag_info(
string_to_tag.at(tag),
fully_qualified_external(package_name, classname),
export_attribute,
permission_attribute,
protection_level_attribute);
if (tag == "provider") {
auto text =
get_string_attribute_value(element, "authorities");
parse_authorities(text, &tag_info.authority_classes);
} else {
tag_info.has_intent_filters =
find_nested_tag("intent-filter", element);
}
manifest_classes->component_tags.emplace_back(tag_info);
}
return true;
});
}
});
}
//
// PB TO ARSC CONVERSIONS
//
// Source:
// https://cs.android.com/android/platform/superproject/+/android-12.0.0_r1:frameworks/base/tools/aapt2/format/proto/ProtoDeserialize.cpp;l=68
bool DeserializeConfigFromPb(const aapt::pb::Configuration& pb_config,
android::ResTable_config* out_config,
std::string* out_error) {
using namespace aapt;
using ConfigDescription = android::ResTable_config;
out_config->mcc = static_cast<uint16_t>(pb_config.mcc());
out_config->mnc = static_cast<uint16_t>(pb_config.mnc());
if (!pb_config.locale().empty()) {
android::LocaleValue lv;
if (!lv.InitFromBcp47Tag(pb_config.locale())) {
std::ostringstream error;
error << "configuration has invalid locale '" << pb_config.locale()
<< "'";
*out_error = error.str();
return false;
}
lv.WriteTo(out_config);
}
switch (pb_config.layout_direction()) {
case pb::Configuration_LayoutDirection_LAYOUT_DIRECTION_LTR:
out_config->screenLayout =
(out_config->screenLayout & ~ConfigDescription::MASK_LAYOUTDIR) |
ConfigDescription::LAYOUTDIR_LTR;
break;
case pb::Configuration_LayoutDirection_LAYOUT_DIRECTION_RTL:
out_config->screenLayout =
(out_config->screenLayout & ~ConfigDescription::MASK_LAYOUTDIR) |
ConfigDescription::LAYOUTDIR_RTL;
break;
default:
break;
}
out_config->smallestScreenWidthDp =
static_cast<uint16_t>(pb_config.smallest_screen_width_dp());
out_config->screenWidthDp =
static_cast<uint16_t>(pb_config.screen_width_dp());
out_config->screenHeightDp =
static_cast<uint16_t>(pb_config.screen_height_dp());
switch (pb_config.screen_layout_size()) {
case pb::Configuration_ScreenLayoutSize_SCREEN_LAYOUT_SIZE_SMALL:
out_config->screenLayout =
(out_config->screenLayout & ~ConfigDescription::MASK_SCREENSIZE) |
ConfigDescription::SCREENSIZE_SMALL;
break;
case pb::Configuration_ScreenLayoutSize_SCREEN_LAYOUT_SIZE_NORMAL:
out_config->screenLayout =
(out_config->screenLayout & ~ConfigDescription::MASK_SCREENSIZE) |
ConfigDescription::SCREENSIZE_NORMAL;
break;
case pb::Configuration_ScreenLayoutSize_SCREEN_LAYOUT_SIZE_LARGE:
out_config->screenLayout =
(out_config->screenLayout & ~ConfigDescription::MASK_SCREENSIZE) |
ConfigDescription::SCREENSIZE_LARGE;
break;
case pb::Configuration_ScreenLayoutSize_SCREEN_LAYOUT_SIZE_XLARGE:
out_config->screenLayout =
(out_config->screenLayout & ~ConfigDescription::MASK_SCREENSIZE) |
ConfigDescription::SCREENSIZE_XLARGE;
break;
default:
break;
}
switch (pb_config.screen_layout_long()) {
case pb::Configuration_ScreenLayoutLong_SCREEN_LAYOUT_LONG_LONG:
out_config->screenLayout =
(out_config->screenLayout & ~ConfigDescription::MASK_SCREENLONG) |
ConfigDescription::SCREENLONG_YES;
break;
case pb::Configuration_ScreenLayoutLong_SCREEN_LAYOUT_LONG_NOTLONG:
out_config->screenLayout =
(out_config->screenLayout & ~ConfigDescription::MASK_SCREENLONG) |
ConfigDescription::SCREENLONG_NO;
break;
default:
break;
}
switch (pb_config.screen_round()) {
case pb::Configuration_ScreenRound_SCREEN_ROUND_ROUND:
out_config->screenLayout2 =
(out_config->screenLayout2 & ~ConfigDescription::MASK_SCREENROUND) |
ConfigDescription::SCREENROUND_YES;
break;
case pb::Configuration_ScreenRound_SCREEN_ROUND_NOTROUND:
out_config->screenLayout2 =
(out_config->screenLayout2 & ~ConfigDescription::MASK_SCREENROUND) |
ConfigDescription::SCREENROUND_NO;
break;
default:
break;
}
switch (pb_config.wide_color_gamut()) {
case pb::Configuration_WideColorGamut_WIDE_COLOR_GAMUT_WIDECG:
out_config->colorMode =
(out_config->colorMode & ~ConfigDescription::MASK_WIDE_COLOR_GAMUT) |
ConfigDescription::WIDE_COLOR_GAMUT_YES;
break;
case pb::Configuration_WideColorGamut_WIDE_COLOR_GAMUT_NOWIDECG:
out_config->colorMode =
(out_config->colorMode & ~ConfigDescription::MASK_WIDE_COLOR_GAMUT) |
ConfigDescription::WIDE_COLOR_GAMUT_NO;
break;
default:
break;
}
switch (pb_config.hdr()) {
case pb::Configuration_Hdr_HDR_HIGHDR:
out_config->colorMode =
(out_config->colorMode & ~ConfigDescription::MASK_HDR) |
ConfigDescription::HDR_YES;
break;
case pb::Configuration_Hdr_HDR_LOWDR:
out_config->colorMode =
(out_config->colorMode & ~ConfigDescription::MASK_HDR) |
ConfigDescription::HDR_NO;
break;
default:
break;
}
switch (pb_config.orientation()) {
case pb::Configuration_Orientation_ORIENTATION_PORT:
out_config->orientation = ConfigDescription::ORIENTATION_PORT;
break;
case pb::Configuration_Orientation_ORIENTATION_LAND:
out_config->orientation = ConfigDescription::ORIENTATION_LAND;
break;
case pb::Configuration_Orientation_ORIENTATION_SQUARE:
out_config->orientation = ConfigDescription::ORIENTATION_SQUARE;
break;
default:
break;
}
switch (pb_config.ui_mode_type()) {
case pb::Configuration_UiModeType_UI_MODE_TYPE_NORMAL:
out_config->uiMode =
(out_config->uiMode & ~ConfigDescription::MASK_UI_MODE_TYPE) |
ConfigDescription::UI_MODE_TYPE_NORMAL;
break;
case pb::Configuration_UiModeType_UI_MODE_TYPE_DESK:
out_config->uiMode =
(out_config->uiMode & ~ConfigDescription::MASK_UI_MODE_TYPE) |
ConfigDescription::UI_MODE_TYPE_DESK;
break;
case pb::Configuration_UiModeType_UI_MODE_TYPE_CAR:
out_config->uiMode =
(out_config->uiMode & ~ConfigDescription::MASK_UI_MODE_TYPE) |
ConfigDescription::UI_MODE_TYPE_CAR;
break;
case pb::Configuration_UiModeType_UI_MODE_TYPE_TELEVISION:
out_config->uiMode =
(out_config->uiMode & ~ConfigDescription::MASK_UI_MODE_TYPE) |
ConfigDescription::UI_MODE_TYPE_TELEVISION;
break;
case pb::Configuration_UiModeType_UI_MODE_TYPE_APPLIANCE:
out_config->uiMode =
(out_config->uiMode & ~ConfigDescription::MASK_UI_MODE_TYPE) |
ConfigDescription::UI_MODE_TYPE_APPLIANCE;
break;
case pb::Configuration_UiModeType_UI_MODE_TYPE_WATCH:
out_config->uiMode =
(out_config->uiMode & ~ConfigDescription::MASK_UI_MODE_TYPE) |
ConfigDescription::UI_MODE_TYPE_WATCH;
break;
case pb::Configuration_UiModeType_UI_MODE_TYPE_VRHEADSET:
out_config->uiMode =
(out_config->uiMode & ~ConfigDescription::MASK_UI_MODE_TYPE) |
ConfigDescription::UI_MODE_TYPE_VR_HEADSET;
break;
default:
break;
}
switch (pb_config.ui_mode_night()) {
case pb::Configuration_UiModeNight_UI_MODE_NIGHT_NIGHT:
out_config->uiMode =
(out_config->uiMode & ~ConfigDescription::MASK_UI_MODE_NIGHT) |
ConfigDescription::UI_MODE_NIGHT_YES;
break;
case pb::Configuration_UiModeNight_UI_MODE_NIGHT_NOTNIGHT:
out_config->uiMode =
(out_config->uiMode & ~ConfigDescription::MASK_UI_MODE_NIGHT) |
ConfigDescription::UI_MODE_NIGHT_NO;
break;
default:
break;
}
out_config->density = static_cast<uint16_t>(pb_config.density());
switch (pb_config.touchscreen()) {
case pb::Configuration_Touchscreen_TOUCHSCREEN_NOTOUCH:
out_config->touchscreen = ConfigDescription::TOUCHSCREEN_NOTOUCH;
break;
case pb::Configuration_Touchscreen_TOUCHSCREEN_STYLUS:
out_config->touchscreen = ConfigDescription::TOUCHSCREEN_STYLUS;
break;
case pb::Configuration_Touchscreen_TOUCHSCREEN_FINGER:
out_config->touchscreen = ConfigDescription::TOUCHSCREEN_FINGER;
break;
default:
break;
}
switch (pb_config.keys_hidden()) {
case pb::Configuration_KeysHidden_KEYS_HIDDEN_KEYSEXPOSED:
out_config->inputFlags =
(out_config->inputFlags & ~ConfigDescription::MASK_KEYSHIDDEN) |
ConfigDescription::KEYSHIDDEN_NO;
break;
case pb::Configuration_KeysHidden_KEYS_HIDDEN_KEYSHIDDEN:
out_config->inputFlags =
(out_config->inputFlags & ~ConfigDescription::MASK_KEYSHIDDEN) |
ConfigDescription::KEYSHIDDEN_YES;
break;
case pb::Configuration_KeysHidden_KEYS_HIDDEN_KEYSSOFT:
out_config->inputFlags =
(out_config->inputFlags & ~ConfigDescription::MASK_KEYSHIDDEN) |
ConfigDescription::KEYSHIDDEN_SOFT;
break;
default:
break;
}
switch (pb_config.keyboard()) {
case pb::Configuration_Keyboard_KEYBOARD_NOKEYS:
out_config->keyboard = ConfigDescription::KEYBOARD_NOKEYS;
break;
case pb::Configuration_Keyboard_KEYBOARD_QWERTY:
out_config->keyboard = ConfigDescription::KEYBOARD_QWERTY;
break;
case pb::Configuration_Keyboard_KEYBOARD_TWELVEKEY:
out_config->keyboard = ConfigDescription::KEYBOARD_12KEY;
break;
default:
break;
}
switch (pb_config.nav_hidden()) {
case pb::Configuration_NavHidden_NAV_HIDDEN_NAVEXPOSED:
out_config->inputFlags =
(out_config->inputFlags & ~ConfigDescription::MASK_NAVHIDDEN) |
ConfigDescription::NAVHIDDEN_NO;
break;
case pb::Configuration_NavHidden_NAV_HIDDEN_NAVHIDDEN:
out_config->inputFlags =
(out_config->inputFlags & ~ConfigDescription::MASK_NAVHIDDEN) |
ConfigDescription::NAVHIDDEN_YES;
break;
default:
break;
}
switch (pb_config.navigation()) {
case pb::Configuration_Navigation_NAVIGATION_NONAV:
out_config->navigation = ConfigDescription::NAVIGATION_NONAV;
break;
case pb::Configuration_Navigation_NAVIGATION_DPAD:
out_config->navigation = ConfigDescription::NAVIGATION_DPAD;
break;
case pb::Configuration_Navigation_NAVIGATION_TRACKBALL:
out_config->navigation = ConfigDescription::NAVIGATION_TRACKBALL;
break;
case pb::Configuration_Navigation_NAVIGATION_WHEEL:
out_config->navigation = ConfigDescription::NAVIGATION_WHEEL;
break;
default:
break;
}
out_config->screenWidth = static_cast<uint16_t>(pb_config.screen_width());
out_config->screenHeight = static_cast<uint16_t>(pb_config.screen_height());
out_config->sdkVersion = static_cast<uint16_t>(pb_config.sdk_version());
return true;
}
//
// END PB TO ARSC CONVERSIONS
//
} // namespace
boost::optional<int32_t> BundleResources::get_min_sdk() {
std::string base_manifest = (boost::filesystem::path(m_directory) /
"base/manifest/AndroidManifest.xml")
.string();
boost::optional<int32_t> result = boost::none;
if (!boost::filesystem::exists(base_manifest)) {
return result;
}
TRACE(RES, 1, "Reading proto xml at %s", base_manifest.c_str());
read_protobuf_file_contents(
base_manifest,
[&](google::protobuf::io::CodedInputStream& input, size_t size) {
aapt::pb::XmlNode pb_node;
bool read_finish = pb_node.ParseFromCodedStream(&input);
always_assert_log(read_finish, "BundleResoource failed to read %s",
base_manifest.c_str());
if (pb_node.has_element()) {
const auto& manifest_element = pb_node.element();
for (const aapt::pb::XmlNode& pb_child : manifest_element.child()) {
if (pb_child.node_case() == aapt::pb::XmlNode::NodeCase::kElement) {
const auto& pb_element = pb_child.element();
if (pb_element.name() == "uses-sdk") {
if (has_primitive_attribute(
pb_element,
"minSdkVersion",
aapt::pb::Primitive::kIntDecimalValue)) {
result = boost::optional<int32_t>(
get_int_attribute_value(pb_element, "minSdkVersion"));
return;
}
}
}
}
}
});
return result;
}
ManifestClassInfo BundleResources::get_manifest_class_info() {
ManifestClassInfo manifest_classes;
boost::filesystem::path dir(m_directory);
for (auto& entry : boost::make_iterator_range(
boost::filesystem::directory_iterator(dir), {})) {
auto manifest = entry.path() / "manifest/AndroidManifest.xml";
if (boost::filesystem::exists(manifest)) {
read_single_manifest(manifest.string(), &manifest_classes);
}
}
return manifest_classes;
}
boost::optional<std::string> BundleResources::get_manifest_package_name() {
std::string base_manifest = (boost::filesystem::path(m_directory) /
"base/manifest/AndroidManifest.xml")
.string();
boost::optional<std::string> result = boost::none;
if (!boost::filesystem::exists(base_manifest)) {
return result;
}
TRACE(RES, 1, "Reading proto xml at %s", base_manifest.c_str());
read_protobuf_file_contents(
base_manifest,
[&](google::protobuf::io::CodedInputStream& input, size_t size) {
aapt::pb::XmlNode pb_node;
bool read_finish = pb_node.ParseFromCodedStream(&input);
always_assert_log(read_finish, "BundleResoource failed to read %s",
base_manifest.c_str());
if (pb_node.has_element()) {
const auto& manifest_element = pb_node.element();
for (const aapt::pb::XmlAttribute& pb_attr :
manifest_element.attribute()) {
if (pb_attr.name() == "package") {
result = pb_attr.value();
}
}
}
});
return result;
}
namespace {
void apply_rename_map(const std::map<std::string, std::string>& rename_map,
aapt::pb::XmlNode* node,
size_t* out_num_renamed) {
// NOTE: The implementation that follows is not at all similar to
// ApkResources though this is likely sufficient. ApkResources, when
// renaming will simply iterate through a string pool, picking up anything
// wherever it might be in the document. This is simply checking tag
// names, attribute values and text.
if (node->has_element()) {
auto element = node->mutable_element();
{
auto search = rename_map.find(element->name());
if (search != rename_map.end()) {
element->set_name(search->second);
(*out_num_renamed)++;
}
}
auto attr_size = element->attribute_size();
for (int i = 0; i < attr_size; i++) {
auto pb_attr = element->mutable_attribute(i);
auto search = rename_map.find(pb_attr->value());
if (search != rename_map.end()) {
pb_attr->set_value(search->second);
(*out_num_renamed)++;
}
}
auto child_size = element->child_size();
for (int i = 0; i < child_size; i++) {
auto child = element->mutable_child(i);
apply_rename_map(rename_map, child, out_num_renamed);
}
} else {
auto search = rename_map.find(node->text());
if (search != rename_map.end()) {
node->set_text(search->second);
(*out_num_renamed)++;
}
}
}
void fully_qualify_element(
const std::unordered_map<std::string, std::string>& element_to_class_name,
aapt::pb::XmlNode* node,
size_t* out_num_changed) {
if (node->has_element()) {
auto element = node->mutable_element();
auto search = element_to_class_name.find(element->name());
if (search != element_to_class_name.end()) {
bool can_edit = true;
auto attr_size = element->attribute_size();
for (int i = 0; i < attr_size; i++) {
const auto& pb_attr = element->attribute(i);
if (pb_attr.name() == "class") {
// this would be ambiguous if there is already a class attribute; do
// not change this element but consider its children.
can_edit = false;
break;
}
}
if (can_edit) {
element->set_name("view");
auto mutable_attributes = element->mutable_attribute();
auto class_attribute = new aapt::pb::XmlAttribute();
class_attribute->set_name("class");
class_attribute->set_value(search->second);
mutable_attributes->AddAllocated(class_attribute);
(*out_num_changed)++;
}
}
auto child_size = element->child_size();
for (int i = 0; i < child_size; i++) {
auto child = element->mutable_child(i);
fully_qualify_element(element_to_class_name, child, out_num_changed);
}
}
}
} // namespace
bool BundleResources::rename_classes_in_layout(
const std::string& file_path,
const std::map<std::string, std::string>& rename_map,
size_t* out_num_renamed) {
bool write_failed = false;
read_protobuf_file_contents(
file_path,
[&](google::protobuf::io::CodedInputStream& input, size_t size) {
aapt::pb::XmlNode pb_node;
bool read_finish = pb_node.ParseFromCodedStream(&input);
always_assert_log(read_finish, "BundleResoource failed to read %s",
file_path.c_str());
size_t num_renamed = 0;
apply_rename_map(rename_map, &pb_node, &num_renamed);
if (num_renamed > 0) {
std::ofstream out(file_path, std::ofstream::binary);
if (pb_node.SerializeToOstream(&out)) {
*out_num_renamed = num_renamed;
} else {
write_failed = true;
}
}
});
return !write_failed;
}
void BundleResources::fully_qualify_layout(
const std::unordered_map<std::string, std::string>& element_to_class_name,
const std::string& file_path,
size_t* changes) {
read_protobuf_file_contents(
file_path,
[&](google::protobuf::io::CodedInputStream& input, size_t size) {
aapt::pb::XmlNode pb_node;
always_assert_log(pb_node.ParseFromCodedStream(&input),
"BundleResoource failed to read %s",
file_path.c_str());
size_t elements_changed = 0;
fully_qualify_element(element_to_class_name, &pb_node,
&elements_changed);
if (elements_changed > 0) {
std::ofstream out(file_path, std::ofstream::binary);
if (pb_node.SerializeToOstream(&out)) {
*changes = elements_changed;
}
}
});
}
namespace {
std::vector<std::string> find_subdirs_in_modules(
const std::string& extracted_dir, const std::vector<std::string>& subdirs) {
std::vector<std::string> dirs;
boost::filesystem::path dir(extracted_dir);
for (auto& entry : boost::make_iterator_range(
boost::filesystem::directory_iterator(dir), {})) {
for (const auto& subdir : subdirs) {
auto maybe = entry.path() / subdir;
if (boost::filesystem::exists(maybe)) {
dirs.emplace_back(maybe.string());
}
}
}
return dirs;
}
} // namespace
std::vector<std::string> BundleResources::find_res_directories() {
return find_subdirs_in_modules(m_directory, {"res"});
}
std::vector<std::string> BundleResources::find_lib_directories() {
return find_subdirs_in_modules(m_directory, {"lib", "assets"});
}
std::string BundleResources::get_base_assets_dir() {
return m_directory + "/base/assets";
}
namespace {
// Collect all resource ids referred in an given xml element.
// attr->compiled_item->ref->id
void collect_rids_for_element(const aapt::pb::XmlElement& element,
std::unordered_set<uint32_t>& result) {
for (const aapt::pb::XmlAttribute& pb_attr : element.attribute()) {
if (!pb_attr.has_compiled_item()) {
continue;
}
const auto& pb_item = pb_attr.compiled_item();
if (pb_item.has_ref()) {
auto rid = pb_item.ref().id();
if (rid > PACKAGE_RESID_START) {
result.emplace(rid);
}
}
}
}
void collect_layout_classes_and_attributes_for_element(
const aapt::pb::XmlElement& element,
const std::unordered_map<std::string, std::string>& ns_uri_to_prefix,
const std::unordered_set<std::string>& attributes_to_read,
std::unordered_set<std::string>* out_classes,
std::unordered_multimap<std::string, std::string>* out_attributes) {
const auto& element_name = element.name();
// XML element could itself be a class, with classes in its attribute values.
if (resources::KNOWN_ELEMENTS_WITH_CLASS_ATTRIBUTES.count(element_name) > 0) {
for (const auto& attr : resources::POSSIBLE_CLASS_ATTRIBUTES) {
auto classname = get_string_attribute_value(element, attr);
if (!classname.empty() && classname.find('.') != std::string::npos) {
auto internal = java_names::external_to_internal(classname);
TRACE(RES, 9,
"Considering %s as possible class in XML "
"resource from element %s",
internal.c_str(), element_name.c_str());
out_classes->emplace(internal);
break;
}
}
}
if (element_name.find('.') != std::string::npos) {
// Consider the element name itself as a possible class in the
// application
auto internal = java_names::external_to_internal(element_name);
TRACE(RES, 9, "Considering %s as possible class in XML resource",
internal.c_str());
out_classes->emplace(internal);
}
if (!attributes_to_read.empty()) {
for (const aapt::pb::XmlAttribute& pb_attr : element.attribute()) {
const auto& attr_name = pb_attr.name();
const auto& uri = pb_attr.namespace_uri();