1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #define LOG_TAG "VintfObject" 18 //#define LOG_NDEBUG 0 19 #include <android-base/logging.h> 20 21 #include <vector> 22 #include <string> 23 24 #include <nativehelper/JNIHelp.h> 25 #include <vintf/VintfObject.h> 26 #include <vintf/parse_string.h> 27 #include <vintf/parse_xml.h> 28 29 #include "core_jni_helpers.h" 30 31 static jclass gString; 32 static jclass gHashMapClazz; 33 static jmethodID gHashMapInit; 34 static jmethodID gHashMapPut; 35 static jclass gLongClazz; 36 static jmethodID gLongValueOf; 37 38 namespace android { 39 40 using vintf::HalManifest; 41 using vintf::Level; 42 using vintf::SchemaType; 43 using vintf::VintfObject; 44 using vintf::XmlConverter; 45 using vintf::Vndk; 46 using vintf::gHalManifestConverter; 47 using vintf::gCompatibilityMatrixConverter; 48 using vintf::to_string; 49 50 template<typename V> 51 static inline jobjectArray toJavaStringArray(JNIEnv* env, const V& v) { 52 size_t i; 53 typename V::const_iterator it; 54 jobjectArray ret = env->NewObjectArray(v.size(), gString, NULL /* init element */); 55 for (i = 0, it = v.begin(); it != v.end(); ++i, ++it) { 56 env->SetObjectArrayElement(ret, i, env->NewStringUTF(it->c_str())); 57 } 58 return ret; 59 } 60 61 template<typename T> 62 static void tryAddSchema(const std::shared_ptr<const T>& object, const XmlConverter<T>& converter, 63 const std::string& description, 64 std::vector<std::string>* cStrings) { 65 if (object == nullptr) { 66 LOG(WARNING) << __FUNCTION__ << "Cannot get " << description; 67 } else { 68 cStrings->push_back(converter(*object)); 69 } 70 } 71 72 static void tryAddHalNamesAndVersions(const std::shared_ptr<const HalManifest>& manifest, 73 const std::string& description, 74 std::set<std::string> *output) { 75 if (manifest == nullptr) { 76 LOG(WARNING) << __FUNCTION__ << "Cannot get " << description; 77 } else { 78 auto names = manifest->getHalNamesAndVersions(); 79 output->insert(names.begin(), names.end()); 80 } 81 } 82 83 static jobjectArray android_os_VintfObject_report(JNIEnv* env, jclass) 84 { 85 std::vector<std::string> cStrings; 86 87 tryAddSchema(VintfObject::GetDeviceHalManifest(), gHalManifestConverter, 88 "device manifest", &cStrings); 89 tryAddSchema(VintfObject::GetFrameworkHalManifest(), gHalManifestConverter, 90 "framework manifest", &cStrings); 91 tryAddSchema(VintfObject::GetDeviceCompatibilityMatrix(), gCompatibilityMatrixConverter, 92 "device compatibility matrix", &cStrings); 93 tryAddSchema(VintfObject::GetFrameworkCompatibilityMatrix(), gCompatibilityMatrixConverter, 94 "framework compatibility matrix", &cStrings); 95 96 return toJavaStringArray(env, cStrings); 97 } 98 99 static jint verify(JNIEnv* env, jobjectArray packageInfo, android::vintf::DisabledChecks checks) { 100 std::vector<std::string> cPackageInfo; 101 if (packageInfo) { 102 size_t count = env->GetArrayLength(packageInfo); 103 cPackageInfo.resize(count); 104 for (size_t i = 0; i < count; ++i) { 105 jstring element = (jstring)env->GetObjectArrayElement(packageInfo, i); 106 const char *cString = env->GetStringUTFChars(element, NULL /* isCopy */); 107 cPackageInfo[i] = cString; 108 env->ReleaseStringUTFChars(element, cString); 109 } 110 } 111 std::string error; 112 int32_t status = VintfObject::CheckCompatibility(cPackageInfo, &error, checks); 113 if (status) 114 LOG(WARNING) << "VintfObject.verify() returns " << status << ": " << error; 115 return status; 116 } 117 118 static jint android_os_VintfObject_verify(JNIEnv* env, jclass, jobjectArray packageInfo) { 119 return verify(env, packageInfo, ::android::vintf::ENABLE_ALL_CHECKS); 120 } 121 122 static jint android_os_VintfObject_verifyWithoutAvb(JNIEnv* env, jclass) { 123 return verify(env, nullptr, ::android::vintf::DISABLE_AVB_CHECK); 124 } 125 126 static jobjectArray android_os_VintfObject_getHalNamesAndVersions(JNIEnv* env, jclass) { 127 std::set<std::string> halNames; 128 tryAddHalNamesAndVersions(VintfObject::GetDeviceHalManifest(), 129 "device manifest", &halNames); 130 tryAddHalNamesAndVersions(VintfObject::GetFrameworkHalManifest(), 131 "framework manifest", &halNames); 132 return toJavaStringArray(env, halNames); 133 } 134 135 static jstring android_os_VintfObject_getSepolicyVersion(JNIEnv* env, jclass) { 136 std::shared_ptr<const HalManifest> manifest = VintfObject::GetDeviceHalManifest(); 137 if (manifest == nullptr || manifest->type() != SchemaType::DEVICE) { 138 LOG(WARNING) << __FUNCTION__ << "Cannot get device manifest"; 139 return nullptr; 140 } 141 std::string cString = to_string(manifest->sepolicyVersion()); 142 return env->NewStringUTF(cString.c_str()); 143 } 144 145 static jobject android_os_VintfObject_getVndkSnapshots(JNIEnv* env, jclass) { 146 std::shared_ptr<const HalManifest> manifest = VintfObject::GetFrameworkHalManifest(); 147 if (manifest == nullptr || manifest->type() != SchemaType::FRAMEWORK) { 148 LOG(WARNING) << __FUNCTION__ << "Cannot get framework manifest"; 149 return nullptr; 150 } 151 jobject jMap = env->NewObject(gHashMapClazz, gHashMapInit); 152 for (const auto &vndk : manifest->vendorNdks()) { 153 std::string key = vndk.version(); 154 env->CallObjectMethod(jMap, gHashMapPut, 155 env->NewStringUTF(key.c_str()), toJavaStringArray(env, vndk.libraries())); 156 } 157 return jMap; 158 } 159 160 static jobject android_os_VintfObject_getTargetFrameworkCompatibilityMatrixVersion(JNIEnv* env, jclass) { 161 std::shared_ptr<const HalManifest> manifest = VintfObject::GetDeviceHalManifest(); 162 if (manifest == nullptr || manifest->level() == Level::UNSPECIFIED) { 163 return nullptr; 164 } 165 return env->CallStaticObjectMethod(gLongClazz, gLongValueOf, static_cast<jlong>(manifest->level())); 166 } 167 168 // ---------------------------------------------------------------------------- 169 170 static const JNINativeMethod gVintfObjectMethods[] = { 171 {"report", "()[Ljava/lang/String;", (void*)android_os_VintfObject_report}, 172 {"verify", "([Ljava/lang/String;)I", (void*)android_os_VintfObject_verify}, 173 {"verifyWithoutAvb", "()I", (void*)android_os_VintfObject_verifyWithoutAvb}, 174 {"getHalNamesAndVersions", "()[Ljava/lang/String;", (void*)android_os_VintfObject_getHalNamesAndVersions}, 175 {"getSepolicyVersion", "()Ljava/lang/String;", (void*)android_os_VintfObject_getSepolicyVersion}, 176 {"getVndkSnapshots", "()Ljava/util/Map;", (void*)android_os_VintfObject_getVndkSnapshots}, 177 {"getTargetFrameworkCompatibilityMatrixVersion", "()Ljava/lang/Long;", (void*)android_os_VintfObject_getTargetFrameworkCompatibilityMatrixVersion}, 178 }; 179 180 const char* const kVintfObjectPathName = "android/os/VintfObject"; 181 182 int register_android_os_VintfObject(JNIEnv* env) 183 { 184 185 gString = MakeGlobalRefOrDie(env, FindClassOrDie(env, "java/lang/String")); 186 gHashMapClazz = MakeGlobalRefOrDie(env, FindClassOrDie(env, "java/util/HashMap")); 187 gHashMapInit = GetMethodIDOrDie(env, gHashMapClazz, "<init>", "()V"); 188 gHashMapPut = GetMethodIDOrDie(env, gHashMapClazz, 189 "put", "(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;"); 190 gLongClazz = MakeGlobalRefOrDie(env, FindClassOrDie(env, "java/lang/Long")); 191 gLongValueOf = GetStaticMethodIDOrDie(env, gLongClazz, "valueOf", "(J)Ljava/lang/Long;"); 192 193 return RegisterMethodsOrDie(env, kVintfObjectPathName, gVintfObjectMethods, 194 NELEM(gVintfObjectMethods)); 195 } 196 197 }; 198