/* * Copyright (c) 2021, Jesse Buhagiar * * SPDX-License-Identifier: BSD-2-Clause */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include ErrorOr serenity_main(Main::Arguments arguments) { TRY(Core::System::pledge("stdio rpath")); TRY(Core::System::unveil("/sys/bus/usb", "r")); TRY(Core::System::unveil("/res/usb.ids", "r")); TRY(Core::System::unveil(nullptr, nullptr)); bool print_verbose; Core::ArgsParser args; args.set_general_help("List USB devices."); args.add_option(print_verbose, "Print all device descriptors", "verbose", 'v'); args.parse(arguments); Core::DirIterator usb_devices("/sys/bus/usb", Core::DirIterator::SkipDots); RefPtr usb_db = USBDB::Database::open(); if (!usb_db) { warnln("Failed to open usb.ids"); } while (usb_devices.has_next()) { auto full_path = LexicalPath(usb_devices.next_full_path()); auto proc_usb_device = Core::File::construct(full_path.string()); if (!proc_usb_device->open(Core::OpenMode::ReadOnly)) { warnln("Failed to open {}: {}", proc_usb_device->name(), proc_usb_device->error_string()); continue; } auto contents = proc_usb_device->read_all(); auto json_or_error = JsonValue::from_string(contents); if (json_or_error.is_error()) { warnln("Failed to decode JSON: {}", json_or_error.error()); continue; } auto json = json_or_error.release_value(); json.as_array().for_each([usb_db, print_verbose](auto& value) { auto& device_descriptor = value.as_object(); auto device_address = device_descriptor.get("device_address").to_u32(); auto vendor_id = device_descriptor.get("vendor_id").to_u32(); auto product_id = device_descriptor.get("product_id").to_u32(); StringView vendor_string = usb_db->get_vendor(vendor_id); StringView device_string = usb_db->get_device(vendor_id, product_id); if (device_string.is_empty()) device_string = "Unknown Device"; outln("Device {}: ID {:04x}:{:04x} {} {}", device_address, vendor_id, product_id, vendor_string, device_string); if (print_verbose) { outln("Device Descriptor"); outln(" bLength {}", device_descriptor.get("length").to_u32()); outln(" bDescriptorType {}", device_descriptor.get("descriptor_type").to_u32()); outln(" bcdUSB {}", device_descriptor.get("usb_spec_compliance_bcd").to_u32()); outln(" bDeviceClass {}", device_descriptor.get("device_class").to_u32()); outln(" bDeviceSubClass {}", device_descriptor.get("device_sub_class").to_u32()); outln(" bDeviceProtocol {}", device_descriptor.get("device_protocol").to_u32()); outln(" bMaxPacketSize {}", device_descriptor.get("max_packet_size").to_u32()); outln(" idVendor 0x{:04x} {}", device_descriptor.get("vendor_id").to_u32(), vendor_string); outln(" idProduct 0x{:04x} {}", device_descriptor.get("product_id").to_u32(), device_string); outln(" bcdDevice {}", device_descriptor.get("device_release_bcd").to_u32()); outln(" iManufacturer {}", device_descriptor.get("manufacturer_id_descriptor_index").to_u32()); outln(" iProduct {}", device_descriptor.get("product_string_descriptor_index").to_u32()); outln(" iSerial {}", device_descriptor.get("serial_number_descriptor_index").to_u32()); outln(" bNumConfigurations {}", device_descriptor.get("num_configurations").to_u32()); auto const& configuration_descriptors = value.as_object().get("configurations"); configuration_descriptors.as_array().for_each([&](auto& config_value) { auto const& configuration_descriptor = config_value.as_object(); outln(" Configuration Descriptor:"); outln(" bLength {}", configuration_descriptor.get("length").as_u32()); outln(" bDescriptorType {}", configuration_descriptor.get("descriptor_type").as_u32()); outln(" wTotalLength {}", configuration_descriptor.get("total_length").as_u32()); outln(" bNumInterfaces {}", configuration_descriptor.get("number_of_interfaces").as_u32()); outln(" bmAttributes 0x{:02x}", configuration_descriptor.get("attributes_bitmap").as_u32()); outln(" MaxPower {}mA", configuration_descriptor.get("max_power").as_u32() * 2u); auto const& interface_descriptors = config_value.as_object().get("interfaces"); interface_descriptors.as_array().for_each([&](auto& interface_value) { auto const& interface_descriptor = interface_value.as_object(); auto const interface_class_code = interface_descriptor.get("interface_class_code").to_u32(); auto const interface_subclass_code = interface_descriptor.get("interface_sub_class_code").to_u32(); auto const interface_protocol_code = interface_descriptor.get("interface_protocol").to_u32(); auto const interface_class = usb_db->get_class(interface_class_code); auto const interface_subclass = usb_db->get_subclass(interface_class_code, interface_subclass_code); auto const interface_protocol = usb_db->get_protocol(interface_class_code, interface_subclass_code, interface_protocol_code); outln(" Interface Descriptor:"); outln(" bLength {}", interface_descriptor.get("length").to_u32()); outln(" bDescriptorType {}", interface_descriptor.get("descriptor_type").to_u32()); outln(" bInterfaceNumber {}", interface_descriptor.get("interface_number").to_u32()); outln(" bAlternateSetting {}", interface_descriptor.get("alternate_setting").to_u32()); outln(" bNumEndpoints {}", interface_descriptor.get("num_endpoints").to_u32()); outln(" bInterfaceClass {} {}", interface_class_code, interface_class); outln(" bInterfaceSubClass {} {}", interface_subclass_code, interface_subclass); outln(" bInterfaceProtocol {} {}", interface_protocol_code, interface_protocol); outln(" iInterface {}", interface_descriptor.get("interface_string_desc_index").to_u32()); auto const& endpoint_descriptors = interface_value.as_object().get("endpoints"); endpoint_descriptors.as_array().for_each([&](auto& endpoint_value) { auto const& endpoint_descriptor = endpoint_value.as_object(); auto const endpoint_address = endpoint_descriptor.get("endpoint_address").to_u32(); outln(" Endpoint Descriptor:"); outln(" bLength {}", endpoint_descriptor.get("length").to_u32()); outln(" bDescriptorType {}", endpoint_descriptor.get("descriptor_type").to_u32()); outln(" bEndpointAddress 0x{:02x} EP {} {}", endpoint_address, (endpoint_address & 0xFu), ((endpoint_address & 0x80u) ? "IN" : "OUT")); outln(" bmAttributes 0x{:02x}", endpoint_descriptor.get("attribute_bitmap").to_u32()); outln(" wMaxPacketSize 0x{:04x}", endpoint_descriptor.get("max_packet_size").to_u32()); outln(" bInterval {}", endpoint_descriptor.get("polling_interval").to_u32()); }); }); }); } }); } return 0; }