45 bool HexToBytes(const std::string &hex, std::vector<uint8_t> *bytes) {  in HexToBytes()
64 std::string BytesToHex(const std::vector<uint8_t> &bytes) {  in BytesToHex()
65   std::string retval;  in BytesToHex()
74 std::unique_ptr<ShaHasher> CreateShaHasher(const std::string &algorithm) {  in CreateShaHasher()
76     return std::make_unique<ShaHasherImpl<SHA_CTX>>(  in CreateShaHasher()
80     return std::make_unique<ShaHasherImpl<SHA256_CTX>>(  in CreateShaHasher()
84     return std::make_unique<ShaHasherImpl<SHA512_CTX>>(  in CreateShaHasher()
90 static std::optional<std::string> ReadCommandToString(const std::string &command) {  in ReadCommandToString()
91   std::unique_ptr<FILE, decltype(&pclose)> cmd_out_stream(popen(command.c_str(), "re"),  in ReadCommandToString()
96     return std::nullopt;  in ReadCommandToString()
102     return std::nullopt;  in ReadCommandToString()
105   std::string output;  in ReadCommandToString()
108     return std::nullopt;  in ReadCommandToString()
115 static bool DeviceSupportsFeature(const std::string &feature) {  in DeviceSupportsFeature()
116   std::optional<std::string> features = ReadCommandToString("pm list features");  in DeviceSupportsFeature()
122   return features.value().find(feature) != std::string::npos;  in DeviceSupportsFeature()
126 static bool DeviceHasPackage(const std::string &package_name) {  in DeviceHasPackage()
127   std::optional<std::string> packages = ReadCommandToString("pm list packages");  in DeviceHasPackage()
133   return packages.value().find(package_name) != std::string::npos;  in DeviceHasPackage()
171     if (config.toString().find("vrheadset") != std::string::npos) {  in IsVrHeadsetDevice()
199     std::optional<std::string> package_dump = ReadCommandToString("pm dump com.android.vending");  in DeviceHasPlayStore()
204     const std::string playstore_user_cert = "F0:FD:6C:5B:41:0F:25:CB:25:C3:B5:"  in DeviceHasPlayStore()
208     bool certified_playstore = package_dump.value().find(playstore_user_cert) != std::string::npos;  in DeviceHasPlayStore()
244 bool ValidatePublicKeyBlob(const std::string &key_blob_to_validate) {  in ValidatePublicKeyBlob()
250   const std::string exec_dir = android::base::GetExecutableDirectory();  in ValidatePublicKeyBlob()
251   std::vector<std::string> allowed_key_names = {  in ValidatePublicKeyBlob()
255   std::vector<std::string> allowed_oem_key_names = {  in ValidatePublicKeyBlob()
265     std::string allowed_key_blob;  in ValidatePublicKeyBlob()
279     const std::vector<std::string> &api_level_props) {  in ReadApiLevelProps()
320   uint32_t api_level = std::min(board_api_level, product_api_level);  in GetVendorApiLevel()
328 std::optional<uint32_t> GetBoardApiLevel() {  in GetBoardApiLevel()
332     return std::nullopt;  in GetBoardApiLevel()