Add serde support

Cargo.toml

@@ -14,8 +14,13 @@ tokio = { version = "1.22.0", features = ["rt", "net", "io-util", "sync"] }
 log = "0.4.17"
 num-traits = "0.2.15"
 num-derive = "0.3.3"
-rusb = "0.9.1"
+rusb = "0.9.3"
+serde = { version = "1.0", features = ["derive"], optional = true }
 
 [dev-dependencies]
 tokio = { version = "1.22.0", features = ["full"] }
 env_logger = "0.9.0"
+
+[features]
+default = []
+serde = ["dep:serde", "rusb/serde"]

src/consts.rs

@@ -2,6 +2,7 @@ use super::*;
 
 /// A list of known USB speeds
 #[derive(Copy, Clone, Debug)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub enum UsbSpeed {
     Unknown = 0x0,
     Low,
@@ -15,6 +16,7 @@ pub enum UsbSpeed {
 /// A list of defined USB class codes
 // https://www.usb.org/defined-class-codes
 #[derive(Copy, Clone, Debug)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub enum ClassCode {
     SeeInterface = 0,
     Audio,
@@ -42,6 +44,7 @@ pub enum ClassCode {
 
 /// A list of defined USB endpoint attributes
 #[derive(Copy, Clone, Debug, FromPrimitive)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub enum EndpointAttributes {
     Control = 0,
     Isochronous,
@@ -59,6 +62,7 @@ pub const EP0_MAX_PACKET_SIZE: u16 = 64;
 /// A list of defined USB standard requests
 /// from USB 2.0 standard Table 9.4. Standard Request Codes
 #[derive(Copy, Clone, Debug, FromPrimitive)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub enum StandardRequest {
     GetStatus = 0,
     ClearFeature = 1,
@@ -76,6 +80,7 @@ pub enum StandardRequest {
 /// A list of defined USB descriptor types
 /// from USB 2.0 standard Table 9.5. Descriptor Types
 #[derive(Copy, Clone, Debug, FromPrimitive)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub enum DescriptorType {
     Device = 1,
     Configuration = 2,

src/device.rs

@@ -2,6 +2,7 @@ use super::*;
 use rusb::Version as rusbVersion;
 
 #[derive(Clone, Default)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct Version {
     pub major: u8,
     pub minor: u8,
@@ -26,6 +27,7 @@ impl From<Version> for rusbVersion {
 
 /// Represent a USB device
 #[derive(Clone, Default)]
+#[cfg_attr(feature = "serde", derive(Serialize))]
 pub struct UsbDevice {
     pub path: String,
     pub bus_id: String,
@@ -41,7 +43,10 @@ pub struct UsbDevice {
     pub configuration_value: u8,
     pub num_configurations: u8,
     pub interfaces: Vec<UsbInterface>,
+
+    #[cfg_attr(feature = "serde", serde(skip))]
     pub device_handler: Option<Arc<Mutex<Box<dyn UsbDeviceHandler + Send>>>>,
+
     pub usb_version: Version,
 
     pub(crate) ep0_in: UsbEndpoint,

src/endpoint.rs

@@ -2,6 +2,7 @@ use super::*;
 
 /// Represent a USB endpoint
 #[derive(Clone, Copy, Debug, Default)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct UsbEndpoint {
     /// bEndpointAddress
     pub address: u8,

src/hid.rs

@@ -6,13 +6,15 @@ use super::*;
 // HID Usage Tables 1.12: https://www.usb.org/sites/default/files/documents/hut1_12v2.pdf
 
 #[derive(Clone)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 enum UsbHidKeyboardHandlerState {
     Idle,
     KeyDown,
 }
 
 /// A handler of a HID keyboard
 #[derive(Clone)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct UsbHidKeyboardHandler {
     pub report_descriptor: Vec<u8>,
     pub pending_key_events: VecDeque<UsbHidKeyboardReport>,
@@ -23,6 +25,7 @@ pub struct UsbHidKeyboardHandler {
 ///
 /// For definition of key codes, see [HID Usage Tables](https://www.usb.org/sites/default/files/documents/hut1_12v2.pdf)
 #[derive(Clone)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct UsbHidKeyboardReport {
     /// Key modifier
     pub modifier: u8,
@@ -159,6 +162,7 @@ impl UsbInterfaceHandler for UsbHidKeyboardHandler {
 
 /// A list of defined HID descriptor type
 #[derive(Copy, Clone, Debug, FromPrimitive)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub enum HidDescriptorType {
     Hid = 0x21,
     Report = 0x22,

src/interface.rs

@@ -2,13 +2,16 @@ use super::*;
 
 /// Represent a USB interface
 #[derive(Clone)]
+#[cfg_attr(feature = "serde", derive(Serialize))]
 pub struct UsbInterface {
     pub interface_class: u8,
     pub interface_subclass: u8,
     pub interface_protocol: u8,
     pub endpoints: Vec<UsbEndpoint>,
     pub string_interface: u8,
     pub class_specific_descriptor: Vec<u8>,
+
+    #[cfg_attr(feature = "serde", serde(skip))]
     pub handler: Arc<Mutex<Box<dyn UsbInterfaceHandler + Send>>>,
 }
 

src/lib.rs

@@ -15,6 +15,9 @@ use tokio::net::TcpListener;
 use tokio::sync::RwLock;
 use usbip_protocol::UsbIpCommand;
 
+#[cfg(feature = "serde")]
+use serde::{Deserialize, Serialize};
+
 pub mod cdc;
 mod consts;
 mod device;

src/setup.rs

@@ -1,5 +1,8 @@
+use super::*;
+
 /// Parse the SETUP packet of control transfers
 #[derive(Clone, Copy, Debug, Default)]
+#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
 pub struct SetupPacket {
     /// bmRequestType
     pub request_type: u8,