static bool find_paths(struct paths *paths) { std::unordered_map<std::string, std::string> props; util::file_get_all_properties(DEFAULT_PROP_PATH, &props); std::string userdata; std::string header; std::string recovery; std::vector<unsigned char> contents; util::file_read_all(DEVICE_JSON_PATH, &contents); contents.push_back('\0'); MbDeviceJsonError error; Device *device = mb_device_new_from_json((char *) contents.data(), &error); if (!device) { LOGE("%s: Failed to load device definition", DEVICE_JSON_PATH); return false; } else if (mb_device_validate(device) != 0) { LOGE("%s: Device definition validation failed", DEVICE_JSON_PATH); mb_device_free(device); return false; } auto userdata_list = mb_device_data_block_devs(device); auto recovery_list = mb_device_recovery_block_devs(device); if (userdata_list) { for (auto it = userdata_list; *it; ++it) { if (access(*it, R_OK) == 0) { userdata = *it; break; } } } if (recovery_list) { for (auto it = recovery_list; *it; ++it) { if (access(*it, R_OK) == 0) { recovery = *it; break; } } } mb_device_free(device); header = props[PROP_CRYPTFS_HEADER_PATH]; if (userdata.empty()) { LOGE("Encrypted partition path could not be detected"); return false; } if (recovery.empty()) { LOGE("Recovery partition path could not be detected"); return false; } if (header.empty()) { LOGE("Cryptfs header path could not be detected"); return false; } paths->userdata.swap(userdata); paths->recovery.swap(recovery); paths->header.swap(header); return true; }
ScopedDevice(const char *json) { device = mb_device_new_from_json(json, &error); }