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/*
* Copyright (C) 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "cmd/Util.h"
#include <vector>
#include "android-base/logging.h"
#include "androidfw/ConfigDescription.h"
#include "androidfw/Locale.h"
#include "ResourceUtils.h"
#include "ValueVisitor.h"
#include "split/TableSplitter.h"
#include "util/Maybe.h"
#include "util/Util.h"
using ::android::ConfigDescription;
using ::android::LocaleValue;
using ::android::StringPiece;
using ::android::base::StringPrintf;
namespace aapt {
Maybe<uint16_t> ParseTargetDensityParameter(const StringPiece& arg, IDiagnostics* diag) {
ConfigDescription preferred_density_config;
if (!ConfigDescription::Parse(arg, &preferred_density_config)) {
diag->Error(DiagMessage() << "invalid density '" << arg << "' for --preferred-density option");
return {};
}
// Clear the version that can be automatically added.
preferred_density_config.sdkVersion = 0;
if (preferred_density_config.diff(ConfigDescription::DefaultConfig()) !=
ConfigDescription::CONFIG_DENSITY) {
diag->Error(DiagMessage() << "invalid preferred density '" << arg << "'. "
<< "Preferred density must only be a density value");
return {};
}
return preferred_density_config.density;
}
bool ParseSplitParameter(const StringPiece& arg, IDiagnostics* diag, std::string* out_path,
SplitConstraints* out_split) {
CHECK(diag != nullptr);
CHECK(out_path != nullptr);
CHECK(out_split != nullptr);
#ifdef _WIN32
const char sSeparator = ';';
#else
const char sSeparator = ':';
#endif
std::vector<std::string> parts = util::Split(arg, sSeparator);
if (parts.size() != 2) {
diag->Error(DiagMessage() << "invalid split parameter '" << arg << "'");
diag->Note(DiagMessage() << "should be --split path/to/output.apk" << sSeparator
<< "<config>[,<config>...].");
return false;
}
*out_path = parts[0];
out_split->name = parts[1];
for (const StringPiece& config_str : util::Tokenize(parts[1], ',')) {
ConfigDescription config;
if (!ConfigDescription::Parse(config_str, &config)) {
diag->Error(DiagMessage() << "invalid config '" << config_str << "' in split parameter '"
<< arg << "'");
return false;
}
out_split->configs.insert(config);
}
return true;
}
std::unique_ptr<IConfigFilter> ParseConfigFilterParameters(const std::vector<std::string>& args,
IDiagnostics* diag) {
std::unique_ptr<AxisConfigFilter> filter = util::make_unique<AxisConfigFilter>();
for (const std::string& config_arg : args) {
for (const StringPiece& config_str : util::Tokenize(config_arg, ',')) {
ConfigDescription config;
LocaleValue lv;
if (lv.InitFromFilterString(config_str)) {
lv.WriteTo(&config);
} else if (!ConfigDescription::Parse(config_str, &config)) {
diag->Error(DiagMessage() << "invalid config '" << config_str << "' for -c option");
return {};
}
if (config.density != 0) {
diag->Warn(DiagMessage() << "ignoring density '" << config << "' for -c option");
} else {
filter->AddConfig(config);
}
}
}
return std::move(filter);
}
// Adjust the SplitConstraints so that their SDK version is stripped if it
// is less than or equal to the minSdk. Otherwise the resources that have had
// their SDK version stripped due to minSdk won't ever match.
std::vector<SplitConstraints> AdjustSplitConstraintsForMinSdk(
int min_sdk, const std::vector<SplitConstraints>& split_constraints) {
std::vector<SplitConstraints> adjusted_constraints;
adjusted_constraints.reserve(split_constraints.size());
for (const SplitConstraints& constraints : split_constraints) {
SplitConstraints constraint;
for (const ConfigDescription& config : constraints.configs) {
const ConfigDescription &configToInsert = (config.sdkVersion <= min_sdk)
? config.CopyWithoutSdkVersion()
: config;
// only add the config if it actually selects something
if (configToInsert != ConfigDescription::DefaultConfig()) {
constraint.configs.insert(configToInsert);
}
}
constraint.name = constraints.name;
adjusted_constraints.push_back(std::move(constraint));
}
return adjusted_constraints;
}
static xml::AaptAttribute CreateAttributeWithId(const ResourceId& id) {
return xml::AaptAttribute(Attribute(), id);
}
static xml::NamespaceDecl CreateAndroidNamespaceDecl() {
xml::NamespaceDecl decl;
decl.prefix = "android";
decl.uri = xml::kSchemaAndroid;
return decl;
}
// Returns a copy of 'name' which conforms to the regex '[a-zA-Z]+[a-zA-Z0-9_]*' by
// replacing nonconforming characters with underscores.
//
// See frameworks/base/core/java/android/content/pm/PackageParser.java which
// checks this at runtime.
std::string MakePackageSafeName(const std::string &name) {
std::string result(name);
bool first = true;
for (char &c : result) {
if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) {
first = false;
continue;
}
if (!first) {
if (c >= '0' && c <= '9') {
continue;
}
}
c = '_';
first = false;
}
return result;
}
std::unique_ptr<xml::XmlResource> GenerateSplitManifest(const AppInfo& app_info,
const SplitConstraints& constraints) {
const ResourceId kVersionCode(0x0101021b);
const ResourceId kVersionCodeMajor(0x01010576);
const ResourceId kRevisionCode(0x010104d5);
const ResourceId kHasCode(0x0101000c);
std::unique_ptr<xml::Element> manifest_el = util::make_unique<xml::Element>();
manifest_el->namespace_decls.push_back(CreateAndroidNamespaceDecl());
manifest_el->name = "manifest";
manifest_el->attributes.push_back(xml::Attribute{"", "package", app_info.package});
if (app_info.version_code) {
const uint32_t version_code = app_info.version_code.value();
manifest_el->attributes.push_back(xml::Attribute{
xml::kSchemaAndroid, "versionCode", std::to_string(version_code),
CreateAttributeWithId(kVersionCode),
util::make_unique<BinaryPrimitive>(android::Res_value::TYPE_INT_DEC, version_code)});
}
if (app_info.version_code_major) {
const uint32_t version_code_major = app_info.version_code_major.value();
manifest_el->attributes.push_back(xml::Attribute{
xml::kSchemaAndroid, "versionCodeMajor", std::to_string(version_code_major),
CreateAttributeWithId(kVersionCodeMajor),
util::make_unique<BinaryPrimitive>(android::Res_value::TYPE_INT_DEC, version_code_major)});
}
if (app_info.revision_code) {
const uint32_t revision_code = app_info.revision_code.value();
manifest_el->attributes.push_back(xml::Attribute{
xml::kSchemaAndroid, "revisionCode", std::to_string(revision_code),
CreateAttributeWithId(kRevisionCode),
util::make_unique<BinaryPrimitive>(android::Res_value::TYPE_INT_DEC, revision_code)});
}
std::stringstream split_name;
if (app_info.split_name) {
split_name << app_info.split_name.value() << ".";
}
std::vector<std::string> sanitized_config_names;
for (const auto &config : constraints.configs) {
sanitized_config_names.push_back(MakePackageSafeName(config.toString().string()));
}
split_name << "config." << util::Joiner(sanitized_config_names, "_");
manifest_el->attributes.push_back(xml::Attribute{"", "split", split_name.str()});
if (app_info.split_name) {
manifest_el->attributes.push_back(
xml::Attribute{"", "configForSplit", app_info.split_name.value()});
}
// Splits may contain more configurations than originally desired (fall-back densities, etc.).
// This makes programmatic discovery of split targeting difficult. Encode the original
// split constraints intended for this split.
std::stringstream target_config_str;
target_config_str << util::Joiner(constraints.configs, ",");
manifest_el->attributes.push_back(xml::Attribute{"", "targetConfig", target_config_str.str()});
std::unique_ptr<xml::Element> application_el = util::make_unique<xml::Element>();
application_el->name = "application";
application_el->attributes.push_back(
xml::Attribute{xml::kSchemaAndroid, "hasCode", "false", CreateAttributeWithId(kHasCode),
util::make_unique<BinaryPrimitive>(android::Res_value::TYPE_INT_BOOLEAN, 0u)});
manifest_el->AppendChild(std::move(application_el));
std::unique_ptr<xml::XmlResource> doc = util::make_unique<xml::XmlResource>();
doc->root = std::move(manifest_el);
return doc;
}
static Maybe<std::string> ExtractCompiledString(const xml::Attribute& attr,
std::string* out_error) {
if (attr.compiled_value != nullptr) {
const String* compiled_str = ValueCast<String>(attr.compiled_value.get());
if (compiled_str != nullptr) {
if (!compiled_str->value->empty()) {
return *compiled_str->value;
} else {
*out_error = "compiled value is an empty string";
return {};
}
}
*out_error = "compiled value is not a string";
return {};
}
// Fallback to the plain text value if there is one.
if (!attr.value.empty()) {
return attr.value;
}
*out_error = "value is an empty string";
return {};
}
static Maybe<uint32_t> ExtractCompiledInt(const xml::Attribute& attr, std::string* out_error) {
if (attr.compiled_value != nullptr) {
const BinaryPrimitive* compiled_prim = ValueCast<BinaryPrimitive>(attr.compiled_value.get());
if (compiled_prim != nullptr) {
if (compiled_prim->value.dataType >= android::Res_value::TYPE_FIRST_INT &&
compiled_prim->value.dataType <= android::Res_value::TYPE_LAST_INT) {
return compiled_prim->value.data;
}
}
*out_error = "compiled value is not an integer";
return {};
}
// Fallback to the plain text value if there is one.
Maybe<uint32_t> integer = ResourceUtils::ParseInt(attr.value);
if (integer) {
return integer;
}
std::stringstream error_msg;
error_msg << "'" << attr.value << "' is not a valid integer";
*out_error = error_msg.str();
return {};
}
static Maybe<int> ExtractSdkVersion(const xml::Attribute& attr, std::string* out_error) {
if (attr.compiled_value != nullptr) {
const BinaryPrimitive* compiled_prim = ValueCast<BinaryPrimitive>(attr.compiled_value.get());
if (compiled_prim != nullptr) {
if (compiled_prim->value.dataType >= android::Res_value::TYPE_FIRST_INT &&
compiled_prim->value.dataType <= android::Res_value::TYPE_LAST_INT) {
return compiled_prim->value.data;
}
*out_error = "compiled value is not an integer or string";
return {};
}
const String* compiled_str = ValueCast<String>(attr.compiled_value.get());
if (compiled_str != nullptr) {
Maybe<int> sdk_version = ResourceUtils::ParseSdkVersion(*compiled_str->value);
if (sdk_version) {
return sdk_version;
}
*out_error = "compiled string value is not a valid SDK version";
return {};
}
*out_error = "compiled value is not an integer or string";
return {};
}
// Fallback to the plain text value if there is one.
Maybe<int> sdk_version = ResourceUtils::ParseSdkVersion(attr.value);
if (sdk_version) {
return sdk_version;
}
std::stringstream error_msg;
error_msg << "'" << attr.value << "' is not a valid SDK version";
*out_error = error_msg.str();
return {};
}
Maybe<AppInfo> ExtractAppInfoFromBinaryManifest(const xml::XmlResource& xml_res,
IDiagnostics* diag) {
// Make sure the first element is <manifest> with package attribute.
const xml::Element* manifest_el = xml_res.root.get();
if (manifest_el == nullptr) {
return {};
}
AppInfo app_info;
if (!manifest_el->namespace_uri.empty() || manifest_el->name != "manifest") {
diag->Error(DiagMessage(xml_res.file.source) << "root tag must be <manifest>");
return {};
}
const xml::Attribute* package_attr = manifest_el->FindAttribute({}, "package");
if (!package_attr) {
diag->Error(DiagMessage(xml_res.file.source) << "<manifest> must have a 'package' attribute");
return {};
}
std::string error_msg;
Maybe<std::string> maybe_package = ExtractCompiledString(*package_attr, &error_msg);
if (!maybe_package) {
diag->Error(DiagMessage(xml_res.file.source.WithLine(manifest_el->line_number))
<< "invalid package name: " << error_msg);
return {};
}
app_info.package = maybe_package.value();
if (const xml::Attribute* version_code_attr =
manifest_el->FindAttribute(xml::kSchemaAndroid, "versionCode")) {
Maybe<uint32_t> maybe_code = ExtractCompiledInt(*version_code_attr, &error_msg);
if (!maybe_code) {
diag->Error(DiagMessage(xml_res.file.source.WithLine(manifest_el->line_number))
<< "invalid android:versionCode: " << error_msg);
return {};
}
app_info.version_code = maybe_code.value();
}
if (const xml::Attribute* version_code_major_attr =
manifest_el->FindAttribute(xml::kSchemaAndroid, "versionCodeMajor")) {
Maybe<uint32_t> maybe_code = ExtractCompiledInt(*version_code_major_attr, &error_msg);
if (!maybe_code) {
diag->Error(DiagMessage(xml_res.file.source.WithLine(manifest_el->line_number))
<< "invalid android:versionCodeMajor: " << error_msg);
return {};
}
app_info.version_code_major = maybe_code.value();
}
if (const xml::Attribute* revision_code_attr =
manifest_el->FindAttribute(xml::kSchemaAndroid, "revisionCode")) {
Maybe<uint32_t> maybe_code = ExtractCompiledInt(*revision_code_attr, &error_msg);
if (!maybe_code) {
diag->Error(DiagMessage(xml_res.file.source.WithLine(manifest_el->line_number))
<< "invalid android:revisionCode: " << error_msg);
return {};
}
app_info.revision_code = maybe_code.value();
}
if (const xml::Attribute* split_name_attr = manifest_el->FindAttribute({}, "split")) {
Maybe<std::string> maybe_split_name = ExtractCompiledString(*split_name_attr, &error_msg);
if (!maybe_split_name) {
diag->Error(DiagMessage(xml_res.file.source.WithLine(manifest_el->line_number))
<< "invalid split name: " << error_msg);
return {};
}
app_info.split_name = maybe_split_name.value();
}
if (const xml::Element* uses_sdk_el = manifest_el->FindChild({}, "uses-sdk")) {
if (const xml::Attribute* min_sdk =
uses_sdk_el->FindAttribute(xml::kSchemaAndroid, "minSdkVersion")) {
Maybe<int> maybe_sdk = ExtractSdkVersion(*min_sdk, &error_msg);
if (!maybe_sdk) {
diag->Error(DiagMessage(xml_res.file.source.WithLine(uses_sdk_el->line_number))
<< "invalid android:minSdkVersion: " << error_msg);
return {};
}
app_info.min_sdk_version = maybe_sdk.value();
}
}
return app_info;
}
void SetLongVersionCode(xml::Element* manifest, uint64_t version) {
// Write the low bits of the version code to android:versionCode
auto version_code = manifest->FindOrCreateAttribute(xml::kSchemaAndroid, "versionCode");
version_code->value = StringPrintf("0x%08x", (uint32_t) (version & 0xffffffff));
version_code->compiled_value = ResourceUtils::TryParseInt(version_code->value);
auto version_high = (uint32_t) (version >> 32);
if (version_high != 0) {
// Write the high bits of the version code to android:versionCodeMajor
auto version_major = manifest->FindOrCreateAttribute(xml::kSchemaAndroid, "versionCodeMajor");
version_major->value = StringPrintf("0x%08x", version_high);
version_major->compiled_value = ResourceUtils::TryParseInt(version_major->value);
} else {
manifest->RemoveAttribute(xml::kSchemaAndroid, "versionCodeMajor");
}
}
std::regex GetRegularExpression(const std::string &input) {
// Standard ECMAScript grammar.
std::regex case_insensitive(
input, std::regex_constants::ECMAScript);
return case_insensitive;
}
} // namespace aapt