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accounts/usbwallet, vendor: use hidapi instead of libusb directly

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This commit is contained in:
Péter Szilágyi 2017-02-16 15:36:44 +02:00
parent bdef758d5c
commit 6ec8135256
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83 changed files with 5659 additions and 1838 deletions
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45
accounts/usbwallet/ledger_hub.go
View File

@ -18,18 +18,16 @@
// wallets. The wire protocol spec can be found in the Ledger Blue GitHub repo:
// https://raw.githubusercontent.com/LedgerHQ/blue-app-eth/master/doc/ethapp.asc
// +build !ios
package usbwallet
import (
"fmt"
"errors"
"sync"
"time"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/event"
"github.com/karalabe/gousb/usb"
"github.com/karalabe/hid"
)
// LedgerScheme is the protocol scheme prefixing account and wallet URLs.
@ -49,8 +47,6 @@ const ledgerRefreshThrottling = 500 * time.Millisecond
// LedgerHub is a accounts.Backend that can find and handle Ledger hardware wallets.
type LedgerHub struct {
ctx *usb.Context // Context interfacing with a libusb instance
refreshed time.Time // Time instance when the list of wallets was last refreshed
wallets []accounts.Wallet // List of Ledger devices currently tracking
updateFeed event.Feed // Event feed to notify wallet additions/removals
@ -63,18 +59,13 @@ type LedgerHub struct {
// NewLedgerHub creates a new hardware wallet manager for Ledger devices.
func NewLedgerHub() (*LedgerHub, error) {
// Initialize the USB library to access Ledgers through
ctx, err := usb.NewContext()
if err != nil {
return nil, err
if !hid.Supported() {
return nil, errors.New("unsupported platform")
}
// Create the USB hub, start and return it
hub := &LedgerHub{
ctx: ctx,
quit: make(chan chan error),
}
hub.refreshWallets()
return hub, nil
}
@ -104,31 +95,23 @@ func (hub *LedgerHub) refreshWallets() {
return
}
// Retrieve the current list of Ledger devices
var devIDs []deviceID
var busIDs []uint16
hub.ctx.ListDevices(func(desc *usb.Descriptor) bool {
// Gather Ledger devices, don't connect any just yet
var ledgers []hid.DeviceInfo
for _, info := range hid.Enumerate(0, 0) { // Can't enumerate directly, one valid ID is the 0 wildcard
for _, id := range ledgerDeviceIDs {
if desc.Vendor == id.Vendor && desc.Product == id.Product {
devIDs = append(devIDs, deviceID{Vendor: desc.Vendor, Product: desc.Product})
busIDs = append(busIDs, uint16(desc.Bus)<<8+uint16(desc.Address))
return false
if info.VendorID == id.Vendor && info.ProductID == id.Product {
ledgers = append(ledgers, info)
break
}
}
}
// Not ledger, ignore and don't connect either
return false
})
// Transform the current list of wallets into the new one
hub.lock.Lock()
wallets := make([]accounts.Wallet, 0, len(devIDs))
wallets := make([]accounts.Wallet, 0, len(ledgers))
events := []accounts.WalletEvent{}
for i := 0; i < len(devIDs); i++ {
devID, busID := devIDs[i], busIDs[i]
url := accounts.URL{Scheme: LedgerScheme, Path: fmt.Sprintf("%03d:%03d", busID>>8, busID&0xff)}
for _, ledger := range ledgers {
url := accounts.URL{Scheme: LedgerScheme, Path: ledger.Path}
// Drop wallets in front of the next device or those that failed for some reason
for len(hub.wallets) > 0 && (hub.wallets[0].URL().Cmp(url) < 0 || hub.wallets[0].(*ledgerWallet).failed()) {
@ -137,7 +120,7 @@ func (hub *LedgerHub) refreshWallets() {
}
// If there are no more wallets or the device is before the next, wrap new wallet
if len(hub.wallets) == 0 || hub.wallets[0].URL().Cmp(url) > 0 {
wallet := &ledgerWallet{context: hub.ctx, hardwareID: devID, locationID: busID, url: &url}
wallet := &ledgerWallet{url: &url, info: ledger}
events = append(events, accounts.WalletEvent{Wallet: wallet, Arrive: true})
wallets = append(wallets, wallet)

93
accounts/usbwallet/ledger_wallet.go
View File

@ -18,8 +18,6 @@
// wallets. The wire protocol spec can be found in the Ledger Blue GitHub repo:
// https://raw.githubusercontent.com/LedgerHQ/blue-app-eth/master/doc/ethapp.asc
// +build !ios
package usbwallet
import (
@ -39,7 +37,7 @@ import (
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/rlp"
"github.com/karalabe/gousb/usb"
"github.com/karalabe/hid"
"golang.org/x/net/context"
)
@ -74,21 +72,21 @@ const (
ledgerP2ReturnAddressChainCode ledgerParam2 = 0x01 // Require a user confirmation before returning the address
)
// errReplyInvalidHeader is the error message returned by a Ledfer data exchange
// errReplyInvalidHeader is the error message returned by a Ledger data exchange
// if the device replies with a mismatching header. This usually means the device
// is in browser mode.
var errReplyInvalidHeader = errors.New("invalid reply header")
// errInvalidVersionReply is the error message returned by a Ledger version retrieval
// when a response does arrive, but it does not contain the expected data.
var errInvalidVersionReply = errors.New("invalid version reply")
// ledgerWallet represents a live USB Ledger hardware wallet.
type ledgerWallet struct {
context *usb.Context // USB context to interface libusb through
hardwareID deviceID // USB identifiers to identify this device type
locationID uint16 // USB bus and address to identify this device instance
url *accounts.URL // Textual URL uniquely identifying this wallet
device *usb.Device // USB device advertising itself as a Ledger wallet
input usb.Endpoint // Input endpoint to send data to this device
output usb.Endpoint // Output endpoint to receive data from this device
info hid.DeviceInfo // Known USB device infos about the wallet
device *hid.Device // USB device advertising itself as a Ledger wallet
failure error // Any failure that would make the device unusable
version [3]byte // Current version of the Ledger Ethereum app (zero if app is offline)
@ -183,59 +181,12 @@ func (w *ledgerWallet) Open(passphrase string) error {
return accounts.ErrWalletAlreadyOpen
}
// Otherwise iterate over all USB devices and find this again (no way to directly do this)
// Iterate over all attached devices and fetch those seemingly Ledger
devices, err := w.context.ListDevices(func(desc *usb.Descriptor) bool {
// Only open this single specific device
return desc.Vendor == w.hardwareID.Vendor && desc.Product == w.hardwareID.Product &&
uint16(desc.Bus)<<8+uint16(desc.Address) == w.locationID
})
device, err := w.info.Open()
if err != nil {
return err
}
if len(devices) == 0 {
return accounts.ErrUnknownWallet
}
// Device opened, attach to the input and output endpoints
device := devices[0]
var invalid string
switch {
case len(device.Descriptor.Configs) == 0:
invalid = "no endpoint config available"
case len(device.Descriptor.Configs[0].Interfaces) == 0:
invalid = "no endpoint interface available"
case len(device.Descriptor.Configs[0].Interfaces[0].Setups) == 0:
invalid = "no endpoint setup available"
case len(device.Descriptor.Configs[0].Interfaces[0].Setups[0].Endpoints) < 2:
invalid = "not enough IO endpoints available"
}
if invalid != "" {
device.Close()
return fmt.Errorf("ledger wallet [%s] invalid: %s", w.url, invalid)
}
// Open the input and output endpoints to the device
input, err := device.OpenEndpoint(
device.Descriptor.Configs[0].Config,
device.Descriptor.Configs[0].Interfaces[0].Number,
device.Descriptor.Configs[0].Interfaces[0].Setups[0].Number,
device.Descriptor.Configs[0].Interfaces[0].Setups[0].Endpoints[1].Address,
)
if err != nil {
device.Close()
return fmt.Errorf("ledger wallet [%s] input open failed: %v", w.url, err)
}
output, err := device.OpenEndpoint(
device.Descriptor.Configs[0].Config,
device.Descriptor.Configs[0].Interfaces[0].Number,
device.Descriptor.Configs[0].Interfaces[0].Setups[0].Number,
device.Descriptor.Configs[0].Interfaces[0].Setups[0].Endpoints[0].Address,
)
if err != nil {
device.Close()
return fmt.Errorf("ledger wallet [%s] output open failed: %v", w.url, err)
}
// Wallet seems to be successfully opened, guess if the Ethereum app is running
w.device, w.input, w.output = device, input, output
w.device = device
w.commsLock = make(chan struct{}, 1)
w.commsLock <- struct{}{} // Enable lock
@ -298,13 +249,13 @@ func (w *ledgerWallet) heartbeat() {
w.commsLock <- struct{}{}
w.stateLock.RUnlock()
if err == usb.ERROR_IO || err == usb.ERROR_NO_DEVICE {
if err != nil && err != errInvalidVersionReply {
w.stateLock.Lock() // Lock state to tear the wallet down
w.failure = err
w.close()
w.stateLock.Unlock()
}
// Ignore uninteresting errors
// Ignore non hardware related errors
err = nil
}
// In case of error, wait for termination
@ -363,13 +314,13 @@ func (w *ledgerWallet) close() error {
return nil
}
// Close the device, clear everything, then return
err := w.device.Close()
w.device.Close()
w.device = nil
w.device, w.input, w.output = nil, nil, nil
w.browser, w.version = false, [3]byte{}
w.accounts, w.paths = nil, nil
return err
return nil
}
// Accounts implements accounts.Wallet, returning the list of accounts pinned to
@ -664,7 +615,7 @@ func (w *ledgerWallet) ledgerVersion() ([3]byte, error) {
return [3]byte{}, err
}
if len(reply) != 4 {
return [3]byte{}, errors.New("reply not of correct size")
return [3]byte{}, errInvalidVersionReply
}
// Cache the version for future reference
var version [3]byte
@ -768,10 +719,6 @@ func (w *ledgerWallet) ledgerDerive(derivationPath []uint32) (common.Address, er
// signature R | 32 bytes
// signature S | 32 bytes
func (w *ledgerWallet) ledgerSign(derivationPath []uint32, address common.Address, tx *types.Transaction, chainID *big.Int) (*types.Transaction, error) {
// We need to modify the timeouts to account for user feedback
defer func(old time.Duration) { w.device.ReadTimeout = old }(w.device.ReadTimeout)
w.device.ReadTimeout = time.Hour * 24 * 30 // Timeout requires a Ledger power cycle, only if you must
// Flatten the derivation path into the Ledger request
path := make([]byte, 1+4*len(derivationPath))
path[0] = byte(len(derivationPath))
@ -903,9 +850,9 @@ func (w *ledgerWallet) ledgerExchange(opcode ledgerOpcode, p1 ledgerParam1, p2 l
}
// Send over to the device
if glog.V(logger.Detail) {
glog.Infof("-> %03d.%03d: %x", w.device.Bus, w.device.Address, chunk)
glog.Infof("-> %s: %x", w.device.Path, chunk)
}
if _, err := w.input.Write(chunk); err != nil {
if _, err := w.device.Write(chunk); err != nil {
return nil, err
}
}
@ -914,11 +861,11 @@ func (w *ledgerWallet) ledgerExchange(opcode ledgerOpcode, p1 ledgerParam1, p2 l
chunk = chunk[:64] // Yeah, we surely have enough space
for {
// Read the next chunk from the Ledger wallet
if _, err := io.ReadFull(w.output, chunk); err != nil {
if _, err := io.ReadFull(w.device, chunk); err != nil {
return nil, err
}
if glog.V(logger.Detail) {
glog.Infof("<- %03d.%03d: %x", w.device.Bus, w.device.Address, chunk)
glog.Infof("<- %s: %x", w.device.Path, chunk)
}
// Make sure the transport header matches
if chunk[0] != 0x01 || chunk[1] != 0x01 || chunk[2] != 0x05 {

8
accounts/usbwallet/usbwallet.go
View File

@ -14,16 +14,12 @@
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// +build !ios
// Package usbwallet implements support for USB hardware wallets.
package usbwallet
import "github.com/karalabe/gousb/usb"
// deviceID is a combined vendor/product identifier to uniquely identify a USB
// hardware device.
type deviceID struct {
Vendor usb.ID // The Vendor identifer
Product usb.ID // The Product identifier
Vendor uint16 // The Vendor identifer
Product uint16 // The Product identifier
}

38
accounts/usbwallet/usbwallet_ios.go
View File

@ -1,38 +0,0 @@
// Copyright 2017 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
// This file contains the implementation for interacting with the Ledger hardware
// wallets. The wire protocol spec can be found in the Ledger Blue GitHub repo:
// https://raw.githubusercontent.com/LedgerHQ/blue-app-eth/master/doc/ethapp.asc
// +build ios
package usbwallet
import (
"errors"
"github.com/ethereum/go-ethereum/accounts"
)
// Here be dragons! There is no USB support on iOS.
// ErrIOSNotSupported is returned for all USB hardware backends on iOS.
var ErrIOSNotSupported = errors.New("no USB support on iOS")
func NewLedgerHub() (accounts.Backend, error) {
return nil, ErrIOSNotSupported
}

1
vendor/github.com/karalabe/gousb/.gitignore generated vendored
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@ -1 +0,0 @@
*.sw[op]

12
vendor/github.com/karalabe/gousb/.travis.yml generated vendored
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@ -1,12 +0,0 @@
language: go
matrix:
include:
- os: linux
dist: trusty
go: 1.7.4
- os: osx
go: 1.7.4
script:
- go test -v -test.run='BCD|Parse' ./...

202
vendor/github.com/karalabe/gousb/LICENSE generated vendored
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@ -1,202 +0,0 @@
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47
vendor/github.com/karalabe/gousb/README.md generated vendored
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@ -1,47 +0,0 @@
Introduction
============
[![Travis Build Status][travisimg]][travis]
[![AppVeyor Build Status][appveyorimg]][appveyor]
[![GoDoc][docimg]][doc]
The gousb package is an attempt at wrapping the `libusb` library into a Go-like binding in a fully self-contained, go-gettable package. Supported platforms include Linux, macOS and Windows as well as the mobile platforms Android and iOS.
This package is a fork of [`github.com/kylelemons/gousb`](https://github.com/kylelemons/gousb), which at the moment seems to be unmaintained. The current fork is different from the upstream package as it contains code to embed `libusb` directly into the Go package (thus becoming fully self-cotnained and go-gettable), as well as it features a few contributions and bugfixes that never really got addressed in the upstream package, but which address important issues nonetheless.
*Note, if @kylelemons decides to pick development of the upstream project up again, consider all commits made by me to this repo as ready contributions. I cannot vouch for other commits as the upstream repo needs a signed CLA for Google.*
[travisimg]: https://travis-ci.org/karalabe/gousb.svg?branch=master
[travis]: https://travis-ci.org/karalabe/gousb
[appveyorimg]: https://ci.appveyor.com/api/projects/status/84k9xse10rl72gn2/branch/master?svg=true
[appveyor]: https://ci.appveyor.com/project/karalabe/gousb
[docimg]: https://godoc.org/github.com/karalabe/gousb?status.svg
[doc]: https://godoc.org/github.com/karalabe/gousb
Installation
============
Example: lsusb
--------------
The gousb project provides a simple but useful example: lsusb. This binary will list the USB devices connected to your system and various interesting tidbits about them, their configurations, endpoints, etc. To install it, run the following command:
go get -v github.com/karalabe/gousb/lsusb
gousb
-----
If you installed the lsusb example, both libraries below are already installed.
Installing the primary gousb package is really easy:
go get -v github.com/karalabe/gousb/usb
There is also a `usbid` package that will not be installed by default by this command, but which provides useful information including the human-readable vendor and product codes for detected hardware. It's not installed by default and not linked into the `usb` package by default because it adds ~400kb to the resulting binary. If you want both, they can be installed thus:
go get -v github.com/karalabe/gousb/usb{,id}
Documentation
=============
The documentation can be viewed via local godoc or via the excellent [godoc.org](http://godoc.org/):
- [usb](http://godoc.org/github.com/karalabe/gousb/usb)
- [usbid](http://godoc.org/pkg/github.com/karalabe/gousb/usbid)

34
vendor/github.com/karalabe/gousb/appveyor.yml generated vendored
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@ -1,34 +0,0 @@
os: Visual Studio 2015
# Clone directly into GOPATH.
clone_folder: C:\gopath\src\github.com\karalabe\gousb
clone_depth: 5
version: "{branch}.{build}"
environment:
global:
GOPATH: C:\gopath
CC: gcc.exe
matrix:
- GOARCH: amd64
MSYS2_ARCH: x86_64
MSYS2_BITS: 64
MSYSTEM: MINGW64
PATH: C:\msys64\mingw64\bin\;%PATH%
- GOARCH: 386
MSYS2_ARCH: i686
MSYS2_BITS: 32
MSYSTEM: MINGW32
PATH: C:\msys64\mingw32\bin\;%PATH%
install:
- rmdir C:\go /s /q
- appveyor DownloadFile https://storage.googleapis.com/golang/go1.7.4.windows-%GOARCH%.zip
- 7z x go1.7.4.windows-%GOARCH%.zip -y -oC:\ > NUL
- go version
- gcc --version
build_script:
- go install ./...
test_script:
- go test -v -test.run="BCD|Parse" ./...

153
vendor/github.com/karalabe/gousb/usb/config.go generated vendored
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@ -1,153 +0,0 @@
// Copyright 2013 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package usb
/*
#ifndef OS_WINDOWS
#include "os/threads_posix.h"
#endif
#include "libusbi.h"
#include "libusb.h"
*/
import "C"
import (
"fmt"
"reflect"
"unsafe"
)
type EndpointInfo struct {
Address uint8
Attributes uint8
MaxPacketSize uint16
MaxIsoPacket uint32
PollInterval uint8
RefreshRate uint8
SynchAddress uint8
}
func (e EndpointInfo) Number() int {
return int(e.Address) & ENDPOINT_NUM_MASK
}
func (e EndpointInfo) Direction() EndpointDirection {
return EndpointDirection(e.Address) & ENDPOINT_DIR_MASK
}
func (e EndpointInfo) String() string {
return fmt.Sprintf("Endpoint %d %-3s %s - %s %s [%d %d]",
e.Number(), e.Direction(),
TransferType(e.Attributes)&TRANSFER_TYPE_MASK,
IsoSyncType(e.Attributes)&ISO_SYNC_TYPE_MASK,
IsoUsageType(e.Attributes)&ISO_USAGE_TYPE_MASK,
e.MaxPacketSize, e.MaxIsoPacket,
)
}
type InterfaceInfo struct {
Number uint8
Setups []InterfaceSetup
}
func (i InterfaceInfo) String() string {
return fmt.Sprintf("Interface %02x (%d setups)", i.Number, len(i.Setups))
}
type InterfaceSetup struct {
Number uint8
Alternate uint8
IfClass uint8
IfSubClass uint8
IfProtocol uint8
Endpoints []EndpointInfo
}
func (a InterfaceSetup) String() string {
return fmt.Sprintf("Interface %02x Setup %02x", a.Number, a.Alternate)
}
type ConfigInfo struct {
Config uint8
Attributes uint8
MaxPower uint8
Interfaces []InterfaceInfo
}
func (c ConfigInfo) String() string {
return fmt.Sprintf("Config %02x", c.Config)
}
func newConfig(dev *C.libusb_device, cfg *C.struct_libusb_config_descriptor) ConfigInfo {
c := ConfigInfo{
Config: uint8(cfg.bConfigurationValue),
Attributes: uint8(cfg.bmAttributes),
MaxPower: uint8(cfg.MaxPower),
}
var ifaces []C.struct_libusb_interface
*(*reflect.SliceHeader)(unsafe.Pointer(&ifaces)) = reflect.SliceHeader{
Data: uintptr(unsafe.Pointer(cfg._interface)),
Len: int(cfg.bNumInterfaces),
Cap: int(cfg.bNumInterfaces),
}
c.Interfaces = make([]InterfaceInfo, 0, len(ifaces))
for _, iface := range ifaces {
if iface.num_altsetting == 0 {
continue
}
var alts []C.struct_libusb_interface_descriptor
*(*reflect.SliceHeader)(unsafe.Pointer(&alts)) = reflect.SliceHeader{
Data: uintptr(unsafe.Pointer(iface.altsetting)),
Len: int(iface.num_altsetting),
Cap: int(iface.num_altsetting),
}
descs := make([]InterfaceSetup, 0, len(alts))
for _, alt := range alts {
i := InterfaceSetup{
Number: uint8(alt.bInterfaceNumber),
Alternate: uint8(alt.bAlternateSetting),
IfClass: uint8(alt.bInterfaceClass),
IfSubClass: uint8(alt.bInterfaceSubClass),
IfProtocol: uint8(alt.bInterfaceProtocol),
}
var ends []C.struct_libusb_endpoint_descriptor
*(*reflect.SliceHeader)(unsafe.Pointer(&ends)) = reflect.SliceHeader{
Data: uintptr(unsafe.Pointer(alt.endpoint)),
Len: int(alt.bNumEndpoints),
Cap: int(alt.bNumEndpoints),
}
i.Endpoints = make([]EndpointInfo, 0, len(ends))
for _, end := range ends {
i.Endpoints = append(i.Endpoints, EndpointInfo{
Address: uint8(end.bEndpointAddress),
Attributes: uint8(end.bmAttributes),
MaxPacketSize: uint16(end.wMaxPacketSize),
//MaxIsoPacket: uint32(C.libusb_get_max_iso_packet_size(dev, C.uchar(end.bEndpointAddress))),
PollInterval: uint8(end.bInterval),
RefreshRate: uint8(end.bRefresh),
SynchAddress: uint8(end.bSynchAddress),
})
}
descs = append(descs, i)
}
c.Interfaces = append(c.Interfaces, InterfaceInfo{
Number: descs[0].Number,
Setups: descs,
})
}
return c
}

183
vendor/github.com/karalabe/gousb/usb/constants.go generated vendored
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@ -1,183 +0,0 @@
// Copyright 2013 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package usb
// #include "libusb.h"
import "C"
type Class uint8
const (
CLASS_PER_INTERFACE Class = C.LIBUSB_CLASS_PER_INTERFACE
CLASS_AUDIO Class = C.LIBUSB_CLASS_AUDIO
CLASS_COMM Class = C.LIBUSB_CLASS_COMM
CLASS_HID Class = C.LIBUSB_CLASS_HID
CLASS_PRINTER Class = C.LIBUSB_CLASS_PRINTER
CLASS_PTP Class = C.LIBUSB_CLASS_PTP
CLASS_MASS_STORAGE Class = C.LIBUSB_CLASS_MASS_STORAGE
CLASS_HUB Class = C.LIBUSB_CLASS_HUB
CLASS_DATA Class = C.LIBUSB_CLASS_DATA
CLASS_WIRELESS Class = C.LIBUSB_CLASS_WIRELESS
CLASS_APPLICATION Class = C.LIBUSB_CLASS_APPLICATION
CLASS_VENDOR_SPEC Class = C.LIBUSB_CLASS_VENDOR_SPEC
)
var classDescription = map[Class]string{
CLASS_PER_INTERFACE: "per-interface",
CLASS_AUDIO: "audio",
CLASS_COMM: "communications",
CLASS_HID: "human interface device",
CLASS_PRINTER: "printer dclass",
CLASS_PTP: "picture transfer protocol",
CLASS_MASS_STORAGE: "mass storage",
CLASS_HUB: "hub",
CLASS_DATA: "data",
CLASS_WIRELESS: "wireless",
CLASS_APPLICATION: "application",
CLASS_VENDOR_SPEC: "vendor-specific",
}
func (c Class) String() string {
return classDescription[c]
}
type DescriptorType uint8
const (
DT_DEVICE DescriptorType = C.LIBUSB_DT_DEVICE
DT_CONFIG DescriptorType = C.LIBUSB_DT_CONFIG
DT_STRING DescriptorType = C.LIBUSB_DT_STRING
DT_INTERFACE DescriptorType = C.LIBUSB_DT_INTERFACE
DT_ENDPOINT DescriptorType = C.LIBUSB_DT_ENDPOINT
DT_HID DescriptorType = C.LIBUSB_DT_HID
DT_REPORT DescriptorType = C.LIBUSB_DT_REPORT
DT_PHYSICAL DescriptorType = C.LIBUSB_DT_PHYSICAL
DT_HUB DescriptorType = C.LIBUSB_DT_HUB
)
var descriptorTypeDescription = map[DescriptorType]string{
DT_DEVICE: "device",
DT_CONFIG: "configuration",
DT_STRING: "string",
DT_INTERFACE: "interface",
DT_ENDPOINT: "endpoint",
DT_HID: "HID",
DT_REPORT: "HID report",
DT_PHYSICAL: "physical",
DT_HUB: "hub",
}
func (dt DescriptorType) String() string {
return descriptorTypeDescription[dt]
}
type EndpointDirection uint8
const (
ENDPOINT_NUM_MASK = 0x03
ENDPOINT_DIR_IN EndpointDirection = C.LIBUSB_ENDPOINT_IN
ENDPOINT_DIR_OUT EndpointDirection = C.LIBUSB_ENDPOINT_OUT
ENDPOINT_DIR_MASK EndpointDirection = 0x80
)
var endpointDirectionDescription = map[EndpointDirection]string{
ENDPOINT_DIR_IN: "IN",
ENDPOINT_DIR_OUT: "OUT",
}
func (ed EndpointDirection) String() string {
return endpointDirectionDescription[ed]
}
type TransferType uint8
const (
TRANSFER_TYPE_CONTROL TransferType = C.LIBUSB_TRANSFER_TYPE_CONTROL
TRANSFER_TYPE_ISOCHRONOUS TransferType = C.LIBUSB_TRANSFER_TYPE_ISOCHRONOUS
TRANSFER_TYPE_BULK TransferType = C.LIBUSB_TRANSFER_TYPE_BULK
TRANSFER_TYPE_INTERRUPT TransferType = C.LIBUSB_TRANSFER_TYPE_INTERRUPT
TRANSFER_TYPE_MASK TransferType = 0x03
)
var transferTypeDescription = map[TransferType]string{
TRANSFER_TYPE_CONTROL: "control",
TRANSFER_TYPE_ISOCHRONOUS: "isochronous",
TRANSFER_TYPE_BULK: "bulk",
TRANSFER_TYPE_INTERRUPT: "interrupt",
}
func (tt TransferType) String() string {
return transferTypeDescription[tt]
}
type IsoSyncType uint8
const (
ISO_SYNC_TYPE_NONE IsoSyncType = C.LIBUSB_ISO_SYNC_TYPE_NONE << 2
ISO_SYNC_TYPE_ASYNC IsoSyncType = C.LIBUSB_ISO_SYNC_TYPE_ASYNC << 2
ISO_SYNC_TYPE_ADAPTIVE IsoSyncType = C.LIBUSB_ISO_SYNC_TYPE_ADAPTIVE << 2
ISO_SYNC_TYPE_SYNC IsoSyncType = C.LIBUSB_ISO_SYNC_TYPE_SYNC << 2
ISO_SYNC_TYPE_MASK IsoSyncType = 0x0C
)
var isoSyncTypeDescription = map[IsoSyncType]string{
ISO_SYNC_TYPE_NONE: "unsynchronized",
ISO_SYNC_TYPE_ASYNC: "asynchronous",
ISO_SYNC_TYPE_ADAPTIVE: "adaptive",
ISO_SYNC_TYPE_SYNC: "synchronous",
}
func (ist IsoSyncType) String() string {
return isoSyncTypeDescription[ist]
}
type IsoUsageType uint8
const (
ISO_USAGE_TYPE_DATA IsoUsageType = C.LIBUSB_ISO_USAGE_TYPE_DATA << 4
ISO_USAGE_TYPE_FEEDBACK IsoUsageType = C.LIBUSB_ISO_USAGE_TYPE_FEEDBACK << 4
ISO_USAGE_TYPE_IMPLICIT IsoUsageType = C.LIBUSB_ISO_USAGE_TYPE_IMPLICIT << 4
ISO_USAGE_TYPE_MASK IsoUsageType = 0x30
)
var isoUsageTypeDescription = map[IsoUsageType]string{
ISO_USAGE_TYPE_DATA: "data",
ISO_USAGE_TYPE_FEEDBACK: "feedback",
ISO_USAGE_TYPE_IMPLICIT: "implicit data",
}
func (iut IsoUsageType) String() string {
return isoUsageTypeDescription[iut]
}
type RequestType uint8
const (
REQUEST_TYPE_STANDARD = C.LIBUSB_REQUEST_TYPE_STANDARD
REQUEST_TYPE_CLASS = C.LIBUSB_REQUEST_TYPE_CLASS
REQUEST_TYPE_VENDOR = C.LIBUSB_REQUEST_TYPE_VENDOR
REQUEST_TYPE_RESERVED = C.LIBUSB_REQUEST_TYPE_RESERVED
)
var requestTypeDescription = map[RequestType]string{
REQUEST_TYPE_STANDARD: "standard",
REQUEST_TYPE_CLASS: "class",
REQUEST_TYPE_VENDOR: "vendor",
REQUEST_TYPE_RESERVED: "reserved",
}
func (rt RequestType) String() string {
return requestTypeDescription[rt]
}

36
vendor/github.com/karalabe/gousb/usb/debug.go generated vendored
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@ -1,36 +0,0 @@
// Copyright 2013 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package usb
// To enable internal debugging:
// -ldflags "-X github.com/karalabe/gousb/usb.debugInternal true"
import (
"io"
"io/ioutil"
"log" // TODO(kevlar): make a logger
"os"
)
var debug *log.Logger
var debugInternal string
func init() {
var out io.Writer = ioutil.Discard
if debugInternal != "" {
out = os.Stderr
}
debug = log.New(out, "usb", log.LstdFlags|log.Lshortfile)
}

77
vendor/github.com/karalabe/gousb/usb/descriptor.go generated vendored
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@ -1,77 +0,0 @@
// Copyright 2013 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package usb
/*
#ifndef OS_WINDOWS
#include "os/threads_posix.h"
#endif
#include "libusbi.h"
#include "libusb.h"
*/
import "C"
type Descriptor struct {
// Bus information
Bus uint8 // The bus on which the device was detected
Address uint8 // The address of the device on the bus
// Version information
Spec BCD // USB Specification Release Number
Device BCD // The device version
// Product information
Vendor ID // The Vendor identifer
Product ID // The Product identifier
// Protocol information
Class uint8 // The class of this device
SubClass uint8 // The sub-class (within the class) of this device
Protocol uint8 // The protocol (within the sub-class) of this device
// Configuration information
Configs []ConfigInfo
}
func newDescriptor(dev *C.libusb_device) (*Descriptor, error) {
var desc C.struct_libusb_device_descriptor
if errno := C.libusb_get_device_descriptor(dev, &desc); errno < 0 {
return nil, usbError(errno)
}
// Enumerate configurations
var cfgs []ConfigInfo
for i := 0; i < int(desc.bNumConfigurations); i++ {
var cfg *C.struct_libusb_config_descriptor
if errno := C.libusb_get_config_descriptor(dev, C.uint8_t(i), &cfg); errno < 0 {
return nil, usbError(errno)
}
cfgs = append(cfgs, newConfig(dev, cfg))
C.libusb_free_config_descriptor(cfg)
}
return &Descriptor{
Bus: uint8(C.libusb_get_bus_number(dev)),
Address: uint8(C.libusb_get_device_address(dev)),
Spec: BCD(desc.bcdUSB),
Device: BCD(desc.bcdDevice),
Vendor: ID(desc.idVendor),
Product: ID(desc.idProduct),
Class: uint8(desc.bDeviceClass),
SubClass: uint8(desc.bDeviceSubClass),
Protocol: uint8(desc.bDeviceProtocol),
Configs: cfgs,
}, nil
}

295
vendor/github.com/karalabe/gousb/usb/device.go generated vendored
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@ -1,295 +0,0 @@
// Copyright 2013 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package usb
/*
#ifndef OS_WINDOWS
#include "os/threads_posix.h"
#endif
#include "libusbi.h"
#include "libusb.h"
*/
import "C"
import (
"fmt"
"reflect"
"sync"
"time"
"unsafe"
)
var DefaultReadTimeout = 1 * time.Second
var DefaultWriteTimeout = 1 * time.Second
var DefaultControlTimeout = 250 * time.Millisecond //5 * time.Second
type Device struct {
handle *C.libusb_device_handle
// Embed the device information for easy access
*Descriptor
// Timeouts
ReadTimeout time.Duration
WriteTimeout time.Duration
ControlTimeout time.Duration
// Claimed interfaces
lock *sync.Mutex
claimed map[uint8]int
// Detached kernel interfaces
detached map[uint8]int
}
func newDevice(handle *C.libusb_device_handle, desc *Descriptor) (*Device, error) {
ifaces := 0
d := &Device{
handle: handle,
Descriptor: desc,
ReadTimeout: DefaultReadTimeout,
WriteTimeout: DefaultWriteTimeout,
ControlTimeout: DefaultControlTimeout,
lock: new(sync.Mutex),
claimed: make(map[uint8]int, ifaces),
detached: make(map[uint8]int),
}
if err := d.detachKernelDriver(); err != nil {
d.Close()
return nil, err
}
return d, nil
}
// detachKernelDriver detaches any active kernel drivers, if supported by the platform.
// If there are any errors, like Context.ListDevices, only the final one will be returned.
func (d *Device) detachKernelDriver() (err error) {
for _, cfg := range d.Configs {
for _, iface := range cfg.Interfaces {
switch activeErr := C.libusb_kernel_driver_active(d.handle, C.int(iface.Number)); activeErr {
case C.LIBUSB_ERROR_NOT_SUPPORTED:
// no need to do any futher checking, no platform support
return
case 0:
continue
case 1:
switch detachErr := C.libusb_detach_kernel_driver(d.handle, C.int(iface.Number)); detachErr {
case C.LIBUSB_ERROR_NOT_SUPPORTED:
// shouldn't ever get here, should be caught by the outer switch
return
case 0:
d.detached[iface.Number]++
case C.LIBUSB_ERROR_NOT_FOUND:
// this status is returned if libusb's driver is already attached to the device
d.detached[iface.Number]++
default:
err = fmt.Errorf("usb: detach kernel driver: %s", usbError(detachErr))
}
default:
err = fmt.Errorf("usb: active kernel driver check: %s", usbError(activeErr))
}
}
}
return
}
// attachKernelDriver re-attaches kernel drivers to any previously detached interfaces, if supported by the platform.
// If there are any errors, like Context.ListDevices, only the final one will be returned.
func (d *Device) attachKernelDriver() (err error) {
for iface := range d.detached {
switch attachErr := C.libusb_attach_kernel_driver(d.handle, C.int(iface)); attachErr {
case C.LIBUSB_ERROR_NOT_SUPPORTED:
// no need to do any futher checking, no platform support
return
case 0:
continue
default:
err = fmt.Errorf("usb: attach kernel driver: %s", usbError(attachErr))
}
}
return
}
func (d *Device) Reset() error {
if errno := C.libusb_reset_device(d.handle); errno != 0 {
return usbError(errno)
}
return nil
}
func (d *Device) Control(rType, request uint8, val, idx uint16, data []byte) (int, error) {
//log.Printf("control xfer: %d:%d/%d:%d %x", idx, rType, request, val, string(data))
dataSlice := (*reflect.SliceHeader)(unsafe.Pointer(&data))
n := C.libusb_control_transfer(
d.handle,
C.uint8_t(rType),
C.uint8_t(request),
C.uint16_t(val),
C.uint16_t(idx),
(*C.uchar)(unsafe.Pointer(dataSlice.Data)),
C.uint16_t(len(data)),
C.uint(d.ControlTimeout/time.Millisecond))
if n < 0 {
return int(n), usbError(n)
}
return int(n), nil
}
// ActiveConfig returns the config id (not the index) of the active configuration.
// This corresponds to the ConfigInfo.Config field.
func (d *Device) ActiveConfig() (uint8, error) {
var cfg C.int
if errno := C.libusb_get_configuration(d.handle, &cfg); errno < 0 {
return 0, usbError(errno)
}
return uint8(cfg), nil
}
// SetConfig attempts to change the active configuration.
// The cfg provided is the config id (not the index) of the configuration to set,
// which corresponds to the ConfigInfo.Config field.
func (d *Device) SetConfig(cfg uint8) error {
if errno := C.libusb_set_configuration(d.handle, C.int(cfg)); errno < 0 {
return usbError(errno)
}
return nil
}
// Close the device.
func (d *Device) Close() error {
if d.handle == nil {
return fmt.Errorf("usb: double close on device")
}
d.lock.Lock()
defer d.lock.Unlock()
for iface := range d.claimed {
C.libusb_release_interface(d.handle, C.int(iface))
}
d.attachKernelDriver()
C.libusb_close(d.handle)
d.handle = nil
return nil
}
func (d *Device) OpenEndpoint(conf, iface, setup, epoint uint8) (Endpoint, error) {
end := &endpoint{
Device: d,
}
var setAlternate bool
for _, c := range d.Configs {
if c.Config != conf {
continue
}
debug.Printf("found conf: %#v\n", c)
for _, i := range c.Interfaces {
if i.Number != iface {
continue
}
debug.Printf("found iface: %#v\n", i)
for i, s := range i.Setups {
if s.Alternate != setup {
continue
}
setAlternate = i != 0
debug.Printf("found setup: %#v [default: %v]\n", s, !setAlternate)
for _, e := range s.Endpoints {
debug.Printf("ep %02x search: %#v\n", epoint, s)
if e.Address != epoint {
continue
}
end.InterfaceSetup = s
end.EndpointInfo = e
switch tt := TransferType(e.Attributes) & TRANSFER_TYPE_MASK; tt {
case TRANSFER_TYPE_BULK:
end.xfer = bulk_xfer
case TRANSFER_TYPE_INTERRUPT:
end.xfer = interrupt_xfer
case TRANSFER_TYPE_ISOCHRONOUS:
end.xfer = isochronous_xfer
default:
return nil, fmt.Errorf("usb: %s transfer is unsupported", tt)
}
goto found
}
return nil, fmt.Errorf("usb: unknown endpoint %02x", epoint)
}
return nil, fmt.Errorf("usb: unknown setup %02x", setup)
}
return nil, fmt.Errorf("usb: unknown interface %02x", iface)
}
return nil, fmt.Errorf("usb: unknown configuration %02x", conf)
found:
// Set the configuration
var activeConf C.int
if errno := C.libusb_get_configuration(d.handle, &activeConf); errno < 0 {
return nil, fmt.Errorf("usb: getcfg: %s", usbError(errno))
}
if int(activeConf) != int(conf) {
if errno := C.libusb_set_configuration(d.handle, C.int(conf)); errno < 0 {
return nil, fmt.Errorf("usb: setcfg: %s", usbError(errno))
}
}
// Claim the interface
if errno := C.libusb_claim_interface(d.handle, C.int(iface)); errno < 0 {
return nil, fmt.Errorf("usb: claim: %s", usbError(errno))
}
// Increment the claim count
d.lock.Lock()
d.claimed[iface]++
d.lock.Unlock() // unlock immediately because the next calls may block
// Choose the alternate
if setAlternate {
if errno := C.libusb_set_interface_alt_setting(d.handle, C.int(iface), C.int(setup)); errno < 0 {
debug.Printf("altsetting error: %s", usbError(errno))
return nil, fmt.Errorf("usb: setalt: %s", usbError(errno))
}
}
return end, nil
}
func (d *Device) GetStringDescriptor(desc_index int) (string, error) {
// allocate 200-byte array limited the length of string descriptor
goBuffer := make([]byte, 200)
// get string descriptor from libusb. if errno < 0 then there are any errors.
// if errno >= 0; it is a length of result string descriptor
errno := C.libusb_get_string_descriptor_ascii(
d.handle,
C.uint8_t(desc_index),
(*C.uchar)(unsafe.Pointer(&goBuffer[0])),
200)
// if any errors occur
if errno < 0 {
return "", fmt.Errorf("usb: getstr: %s", usbError(errno))
}
// convert slice of byte to string with limited length from errno
stringDescriptor := string(goBuffer[:errno])
return stringDescriptor, nil
}

100
vendor/github.com/karalabe/gousb/usb/endpoint.go generated vendored
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@ -1,100 +0,0 @@
// Copyright 2013 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package usb
// #include "libusb.h"
import "C"
import (
"fmt"
"reflect"
"time"
"unsafe"
)
type Endpoint interface {
Read(b []byte) (int, error)
Write(b []byte) (int, error)
Interface() InterfaceSetup
Info() EndpointInfo
}
type endpoint struct {
*Device
InterfaceSetup
EndpointInfo
xfer func(*endpoint, []byte, time.Duration) (int, error)
}
func (e *endpoint) Read(buf []byte) (int, error) {
if EndpointDirection(e.Address)&ENDPOINT_DIR_MASK != ENDPOINT_DIR_IN {
return 0, fmt.Errorf("usb: read: not an IN endpoint")
}
return e.xfer(e, buf, e.ReadTimeout)
}
func (e *endpoint) Write(buf []byte) (int, error) {
if EndpointDirection(e.Address)&ENDPOINT_DIR_MASK != ENDPOINT_DIR_OUT {
return 0, fmt.Errorf("usb: write: not an OUT endpoint")
}
return e.xfer(e, buf, e.WriteTimeout)
}
func (e *endpoint) Interface() InterfaceSetup { return e.InterfaceSetup }
func (e *endpoint) Info() EndpointInfo { return e.EndpointInfo }
// TODO(kevlar): (*Endpoint).Close
func bulk_xfer(e *endpoint, buf []byte, timeout time.Duration) (int, error) {
if len(buf) == 0 {
return 0, nil
}
data := (*reflect.SliceHeader)(unsafe.Pointer(&buf)).Data
var cnt C.int
if errno := C.libusb_bulk_transfer(
e.handle,
C.uchar(e.Address),
(*C.uchar)(unsafe.Pointer(data)),
C.int(len(buf)),
&cnt,
C.uint(timeout/time.Millisecond)); errno < 0 {
return 0, usbError(errno)
}
return int(cnt), nil
}
func interrupt_xfer(e *endpoint, buf []byte, timeout time.Duration) (int, error) {
if len(buf) == 0 {
return 0, nil
}
data := (*reflect.SliceHeader)(unsafe.Pointer(&buf)).Data
var cnt C.int
if errno := C.libusb_interrupt_transfer(
e.handle,
C.uchar(e.Address),
(*C.uchar)(unsafe.Pointer(data)),
C.int(len(buf)),
&cnt,
C.uint(timeout/time.Millisecond)); errno < 0 {
return 0, usbError(errno)
}
return int(cnt), nil
}

92
vendor/github.com/karalabe/gousb/usb/error.go generated vendored
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@ -1,92 +0,0 @@
// Copyright 2013 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package usb
import (
"fmt"
)
// #include "libusb.h"
import "C"
type usbError C.int
func (e usbError) Error() string {
return fmt.Sprintf("libusb: %s [code %d]", usbErrorString[e], int(e))
}
const (
SUCCESS usbError = C.LIBUSB_SUCCESS
ERROR_IO usbError = C.LIBUSB_ERROR_IO
ERROR_INVALID_PARAM usbError = C.LIBUSB_ERROR_INVALID_PARAM
ERROR_ACCESS usbError = C.LIBUSB_ERROR_ACCESS
ERROR_NO_DEVICE usbError = C.LIBUSB_ERROR_NO_DEVICE
ERROR_NOT_FOUND usbError = C.LIBUSB_ERROR_NOT_FOUND
ERROR_BUSY usbError = C.LIBUSB_ERROR_BUSY
ERROR_TIMEOUT usbError = C.LIBUSB_ERROR_TIMEOUT
ERROR_OVERFLOW usbError = C.LIBUSB_ERROR_OVERFLOW
ERROR_PIPE usbError = C.LIBUSB_ERROR_PIPE
ERROR_INTERRUPTED usbError = C.LIBUSB_ERROR_INTERRUPTED
ERROR_NO_MEM usbError = C.LIBUSB_ERROR_NO_MEM
ERROR_NOT_SUPPORTED usbError = C.LIBUSB_ERROR_NOT_SUPPORTED
ERROR_OTHER usbError = C.LIBUSB_ERROR_OTHER
)
var usbErrorString = map[usbError]string{
C.LIBUSB_SUCCESS: "success",
C.LIBUSB_ERROR_IO: "i/o error",
C.LIBUSB_ERROR_INVALID_PARAM: "invalid param",
C.LIBUSB_ERROR_ACCESS: "bad access",
C.LIBUSB_ERROR_NO_DEVICE: "no device",
C.LIBUSB_ERROR_NOT_FOUND: "not found",
C.LIBUSB_ERROR_BUSY: "device or resource busy",
C.LIBUSB_ERROR_TIMEOUT: "timeout",
C.LIBUSB_ERROR_OVERFLOW: "overflow",
C.LIBUSB_ERROR_PIPE: "pipe error",
C.LIBUSB_ERROR_INTERRUPTED: "interrupted",
C.LIBUSB_ERROR_NO_MEM: "out of memory",
C.LIBUSB_ERROR_NOT_SUPPORTED: "not supported",
C.LIBUSB_ERROR_OTHER: "unknown error",
}
type TransferStatus uint8
const (
LIBUSB_TRANSFER_COMPLETED TransferStatus = C.LIBUSB_TRANSFER_COMPLETED
LIBUSB_TRANSFER_ERROR TransferStatus = C.LIBUSB_TRANSFER_ERROR
LIBUSB_TRANSFER_TIMED_OUT TransferStatus = C.LIBUSB_TRANSFER_TIMED_OUT
LIBUSB_TRANSFER_CANCELLED TransferStatus = C.LIBUSB_TRANSFER_CANCELLED
LIBUSB_TRANSFER_STALL TransferStatus = C.LIBUSB_TRANSFER_STALL
LIBUSB_TRANSFER_NO_DEVICE TransferStatus = C.LIBUSB_TRANSFER_NO_DEVICE
LIBUSB_TRANSFER_OVERFLOW TransferStatus = C.LIBUSB_TRANSFER_OVERFLOW
)
var transferStatusDescription = map[TransferStatus]string{
LIBUSB_TRANSFER_COMPLETED: "transfer completed without error",
LIBUSB_TRANSFER_ERROR: "transfer failed",
LIBUSB_TRANSFER_TIMED_OUT: "transfer timed out",
LIBUSB_TRANSFER_CANCELLED: "transfer was cancelled",
LIBUSB_TRANSFER_STALL: "halt condition detected (endpoint stalled) or control request not supported",
LIBUSB_TRANSFER_NO_DEVICE: "device was disconnected",
LIBUSB_TRANSFER_OVERFLOW: "device sent more data than requested",
}
func (ts TransferStatus) String() string {
return transferStatusDescription[ts]
}
func (ts TransferStatus) Error() string {
return "libusb: " + ts.String()
}

79
vendor/github.com/karalabe/gousb/usb/iso.c generated vendored
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#include "libusb.h"
#include <stdio.h>
#include <string.h>
void print_xfer(struct libusb_transfer *xfer);
void iso_callback(void *);
void callback(struct libusb_transfer *xfer) {
//printf("Callback!\n");
//print_xfer(xfer);
iso_callback(xfer->user_data);
}
int submit(struct libusb_transfer *xfer) {
xfer->callback = &callback;
xfer->status = -1;
//print_xfer(xfer);
//printf("Transfer submitted\n");
/* fake
strcpy(xfer->buffer, "hello");
xfer->actual_length = 5;
callback(xfer);
return 0; */
return libusb_submit_transfer(xfer);
}
void print_xfer(struct libusb_transfer *xfer) {
int i;
printf("Transfer:\n");
printf(" dev_handle: %p\n", xfer->dev_handle);
printf(" flags: %08x\n", xfer->flags);
printf(" endpoint: %x\n", xfer->endpoint);
printf(" type: %x\n", xfer->type);
printf(" timeout: %dms\n", xfer->timeout);
printf(" status: %x\n", xfer->status);
printf(" length: %d (act: %d)\n", xfer->length, xfer->actual_length);
printf(" callback: %p\n", xfer->callback);
printf(" user_data: %p\n", xfer->user_data);
printf(" buffer: %p\n", xfer->buffer);
printf(" num_iso_pkts: %d\n", xfer->num_iso_packets);
printf(" packets:\n");
for (i = 0; i < xfer->num_iso_packets; i++) {
printf(" [%04d] %d (act: %d) %x\n", i,
xfer->iso_packet_desc[i].length,
xfer->iso_packet_desc[i].actual_length,
xfer->iso_packet_desc[i].status);
}
}
int extract_data(struct libusb_transfer *xfer, void *raw, int max, unsigned char *status) {
int i;
int copied = 0;
unsigned char *in = xfer->buffer;
unsigned char *out = raw;
for (i = 0; i < xfer->num_iso_packets; i++) {
struct libusb_iso_packet_descriptor pkt = xfer->iso_packet_desc[i];
// Copy the data
int len = pkt.actual_length;
if (len > max) {
len = max;
}
memcpy(out, in, len);
copied += len;
// Increment offsets
in += pkt.length;
out += len;
// Extract first error
if (pkt.status == 0 || *status != 0) {
continue;
}
*status = pkt.status;
}
return copied;
}

148
vendor/github.com/karalabe/gousb/usb/iso.go generated vendored
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@ -1,148 +0,0 @@
// Copyright 2013 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package usb
/*
#include "libusb.h"
int submit(struct libusb_transfer *xfer);
void print_xfer(struct libusb_transfer *xfer);
int extract_data(struct libusb_transfer *xfer, void *data, int max, unsigned char *status);
*/
import "C"
import (
"fmt"
"log"
"time"
"unsafe"
)
//export iso_callback
func iso_callback(cptr unsafe.Pointer) {
ch := *(*chan struct{})(cptr)
close(ch)
}
func (end *endpoint) allocTransfer() *Transfer {
// Use libusb_get_max_iso_packet_size ?
const (
iso_packets = 8 // 128 // 242
packet_size = 2 * 960 // 1760
)
xfer := C.libusb_alloc_transfer(C.int(iso_packets))
if xfer == nil {
log.Printf("usb: transfer allocation failed?!")
return nil
}
buf := make([]byte, iso_packets*packet_size)
done := make(chan struct{}, 1)
xfer.dev_handle = end.Device.handle
xfer.endpoint = C.uchar(end.Address)
xfer._type = C.LIBUSB_TRANSFER_TYPE_ISOCHRONOUS
xfer.buffer = (*C.uchar)((unsafe.Pointer)(&buf[0]))
xfer.length = C.int(len(buf))
xfer.num_iso_packets = iso_packets
C.libusb_set_iso_packet_lengths(xfer, packet_size)
/*
pkts := *(*[]C.struct_libusb_packet_descriptor)(unsafe.Pointer(&reflect.SliceHeader{
Data: uintptr(unsafe.Pointer(&xfer.iso_packet_desc)),
Len: iso_packets,
Cap: iso_packets,
}))
*/
t := &Transfer{
xfer: xfer,
done: done,
buf: buf,
}
xfer.user_data = (unsafe.Pointer)(&t.done)
return t
}
type Transfer struct {
xfer *C.struct_libusb_transfer
pkts []*C.struct_libusb_packet_descriptor
done chan struct{}
buf []byte
}
func (t *Transfer) Submit(timeout time.Duration) error {
//log.Printf("iso: submitting %#v", t.xfer)
t.xfer.timeout = C.uint(timeout / time.Millisecond)
if errno := C.submit(t.xfer); errno < 0 {
return usbError(errno)
}
return nil
}
func (t *Transfer) Wait(b []byte) (n int, err error) {
select {
case <-time.After(10 * time.Second):
return 0, fmt.Errorf("wait timed out after 10s")
case <-t.done:
}
// Non-iso transfers:
//n = int(t.xfer.actual_length)
//copy(b, ((*[1 << 16]byte)(unsafe.Pointer(t.xfer.buffer)))[:n])
//C.print_xfer(t.xfer)
/*
buf, offset := ((*[1 << 16]byte)(unsafe.Pointer(t.xfer.buffer))), 0
for i, pkt := range *t.pkts {
log.Printf("Type is %T", t.pkts)
n += copy(b[n:], buf[offset:][:pkt.actual_length])
offset += pkt.Length
if pkt.status != 0 && err == nil {
err = error(TransferStatus(pkt.status))
}
}
*/
var status uint8
n = int(C.extract_data(t.xfer, unsafe.Pointer(&b[0]), C.int(len(b)), (*C.uchar)(unsafe.Pointer(&status))))
if status != 0 {
err = TransferStatus(status)
}
return n, err
}
func (t *Transfer) Close() error {
C.libusb_free_transfer(t.xfer)
return nil
}
func isochronous_xfer(e *endpoint, buf []byte, timeout time.Duration) (int, error) {
t := e.allocTransfer()
defer t.Close()
if err := t.Submit(timeout); err != nil {
log.Printf("iso: xfer failed to submit: %s", err)
return 0, err
}
n, err := t.Wait(buf)
if err != nil {
log.Printf("iso: xfer failed: %s", err)
return 0, err
}
return n, err
}

47
vendor/github.com/karalabe/gousb/usb/misc.go generated vendored
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@ -1,47 +0,0 @@
// Copyright 2013 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package usb
import (
"fmt"
)
type BCD uint16
const (
USB_2_0 BCD = 0x0200
USB_1_1 BCD = 0x0110
USB_1_0 BCD = 0x0100
)
func (d BCD) Int() (i int) {
ten := 1
for o := uint(0); o < 4; o++ {
n := ((0xF << (o * 4)) & d) >> (o * 4)
i += int(n) * ten
ten *= 10
}
return
}
func (d BCD) String() string {
return fmt.Sprintf("%02x.%02x", int(d>>8), int(d&0xFF))
}
type ID uint16
func (id ID) String() string {
return fmt.Sprintf("%04x", int(id))
}

178
vendor/github.com/karalabe/gousb/usb/usb.go generated vendored
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@ -1,178 +0,0 @@
// Copyright 2013 Google Inc. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// Package usb provides a wrapper around libusb-1.0.
package usb
/*
#cgo CFLAGS: -I../internal/libusb/libusb
#cgo CFLAGS: -DDEFAULT_VISIBILITY=""
#cgo linux CFLAGS: -DOS_LINUX -D_GNU_SOURCE -DPOLL_NFDS_TYPE=int
#cgo darwin CFLAGS: -DOS_DARWIN -DPOLL_NFDS_TYPE=int
#cgo darwin LDFLAGS: -framework CoreFoundation -framework IOKit -lobjc
#cgo openbsd CFLAGS: -DOS_OPENBSD -DPOLL_NFDS_TYPE=int
#cgo windows CFLAGS: -DOS_WINDOWS -DUSE_USBDK -DPOLL_NFDS_TYPE=int
#if defined(OS_LINUX) || defined(OS_DARWIN) || defined(OS_OPENBSD)
#include <sys/poll.h>
#include "os/threads_posix.c"
#include "os/poll_posix.c"
#elif defined(OS_WINDOWS)
#include "os/threads_windows.c"
#include "os/poll_windows.c"
#endif
#ifdef OS_LINUX
#include "os/linux_usbfs.c"
#include "os/linux_netlink.c"
#elif OS_DARWIN
#include "os/darwin_usb.c"
#elif OS_OPENBSD
#include "os/openbsd_usb.c"
#elif OS_WINDOWS
#include "os/windows_nt_common.c"
#include "os/windows_usbdk.c"
#endif
#include "core.c"
#include "descriptor.c"
#include "hotplug.c"
#include "io.c"
#include "strerror.c"
#include "sync.c"
*/
import "C"
import (
"log"
"reflect"
"unsafe"
)
type Context struct {
ctx *C.libusb_context
done chan struct{}
}
func (c *Context) Debug(level int) {
C.libusb_set_debug(c.ctx, C.int(level))
}
func NewContext() (*Context, error) {
c := &Context{
done: make(chan struct{}),
}
if errno := C.libusb_init(&c.ctx); errno != 0 {
return nil, usbError(errno)
}
go func() {
tv := C.struct_timeval{
tv_sec: 0,
tv_usec: 100000,
}
for {
select {
case <-c.done:
return
default:
}
if errno := C.libusb_handle_events_timeout_completed(c.ctx, &tv, nil); errno < 0 {
log.Printf("handle_events: error: %s", usbError(errno))
continue
}
//log.Printf("handle_events returned")
}
}()
return c, nil
}
// ListDevices calls each with each enumerated device.
// If the function returns true, the device is opened and a Device is returned if the operation succeeds.
// Every Device returned (whether an error is also returned or not) must be closed.
// If there are any errors enumerating the devices,
// the final one is returned along with any successfully opened devices.
func (c *Context) ListDevices(each func(desc *Descriptor) bool) ([]*Device, error) {
var list **C.libusb_device
cnt := C.libusb_get_device_list(c.ctx, &list)
if cnt < 0 {
return nil, usbError(cnt)
}
defer C.libusb_free_device_list(list, 1)
var slice []*C.libusb_device
*(*reflect.SliceHeader)(unsafe.Pointer(&slice)) = reflect.SliceHeader{
Data: uintptr(unsafe.Pointer(list)),
Len: int(cnt),
Cap: int(cnt),
}
var reterr error
var ret []*Device
for _, dev := range slice {
desc, err := newDescriptor(dev)
if err != nil {
reterr = err
continue
}
if each(desc) {
var handle *C.libusb_device_handle
if errno := C.libusb_open(dev, &handle); errno != 0 {
reterr = usbError(errno)
continue
}
if dev, err := newDevice(handle, desc); err != nil {
reterr = err
} else {
ret = append(ret, dev)
}
}
}
return ret, reterr
}
// OpenDeviceWithVidPid opens Device from specific VendorId and ProductId.
// If there are any errors, it'll returns at second value.
func (c *Context) OpenDeviceWithVidPid(vid, pid int) (*Device, error) {
handle := C.libusb_open_device_with_vid_pid(c.ctx, (C.uint16_t)(vid), (C.uint16_t)(pid))
if handle == nil {
return nil, ERROR_NOT_FOUND
}
dev := C.libusb_get_device(handle)
if dev == nil {
return nil, ERROR_NO_DEVICE
}
desc, err := newDescriptor(dev)
// return an error from nil-handle and nil-device
if err != nil {
return nil, err
}
return newDevice(handle, desc)
}
func (c *Context) Close() error {
close(c.done)
if c.ctx != nil {
C.libusb_exit(c.ctx)
}
c.ctx = nil
return nil
}

8
vendor/github.com/karalabe/hid/LICENSE.md generated vendored Normal file
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The components of `hid` are licensed as such:
* `hidapi` is released under the [3-clause BSD](https://github.com/signal11/hidapi/blob/master/LICENSE-bsd.txt) license.
* `libusb` is released under the [GNU GPL 2.1](https://github.com/libusb/libusb/blob/master/COPYING)license.
* `go.hid` is released under the [2-clause BSD](https://github.com/GeertJohan/go.hid/blob/master/LICENSE) license.
* `gowchar` is released under the [3-clause BSD](https://github.com/orofarne/gowchar/blob/master/LICENSE) license.
Given the above, `hid` is licensed under GNU GPL 2.1 or later on Linux and 3-clause BSD on other platforms.

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[![GoDoc][docimg]][docurl]
[docimg]: https://godoc.org/github.com/karalabe/hid?status.svg
[docurl]: https://godoc.org/github.com/karalabe/hid
# Gopher Interface Devices (USB HID)
The `hid` package is a cross platform library for accessing and communicating with USB Human Interface
Devices (HID). It is an alternative package to [`gousb`](https://github.com/karalabe/gousb) for use
cases where devices support this ligher mode of operation (e.g. input devices, hardware crypto wallets).
The package wraps [`hidapi`](https://github.com/signal11/hidapi) for accessing OS specific USB HID APIs
directly instead of using low level USB constructs, which might have permission issues on some platforms.
On Linux the package also wraps [`libusb`](https://github.com/libusb/libusb). Both of these dependencies
are vendored directly into the repository and wrapped using CGO, making the `hid` package self-contained
and go-gettable.
Supported platforms at the moment are Linux, macOS and Windows (exclude constraints are also specified
for Android and iOS to allow smoother vendoring into cross platform projects).
## Acknowledgements
Although the `hid` package is an implementation from scratch, it was heavily inspired by the existing
[`go.hid`](https://github.com/GeertJohan/go.hid) library, which seems abandoned since 2015; is incompatible
with Go 1.6+; and has various external dependencies. Given its inspirational roots, I thought it important
to give credit to the author of said package too.
Wide character support in the `hid` package is done via the [`gowchar`](https://github.com/orofarne/gowchar)
library, unmaintained since 2013; non buildable with a modern Go release and failing `go vet` checks. As
such, `gowchar` was also vendored in inline (copyright headers and origins preserved).
## License
The components of `hid` are licensed as such:
* `hidapi` is released under the [3-clause BSD](https://github.com/signal11/hidapi/blob/master/LICENSE-bsd.txt) license.
* `libusb` is released under the [GNU GPL 2.1](https://github.com/libusb/libusb/blob/master/COPYING)license.
* `go.hid` is released under the [2-clause BSD](https://github.com/GeertJohan/go.hid/blob/master/LICENSE) license.
* `gowchar` is released under the [3-clause BSD](https://github.com/orofarne/gowchar/blob/master/LICENSE) license.
Given the above, `hid` is licensed under GNU GPL 2.1 or later on Linux and 3-clause BSD on other platforms.

37
vendor/github.com/karalabe/hid/hid.go generated vendored Normal file
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// hid - Gopher Interface Devices (USB HID)
// Copyright (c) 2017 Péter Szilágyi. All rights reserved.
//
// This file is released under the 3-clause BSD license. Note however that Linux
// support depends on libusb, released under GNU GPL 2.1 or later.
// Package hid provides an interface for USB HID devices.
package hid
import "errors"
// ErrDeviceClosed is returned for operations where the device closed before or
// during the execution.
var ErrDeviceClosed = errors.New("hid: device closed")
// ErrUnsupportedPlatform is returned for all operations where the underlying
// operating system is not supported by the library.
var ErrUnsupportedPlatform = errors.New("hid: unsupported platform")
// DeviceInfo is a hidapi info structure.
type DeviceInfo struct {
Path string // Platform-specific device path
VendorID uint16 // Device Vendor ID
ProductID uint16 // Device Product ID
Release uint16 // Device Release Number in binary-coded decimal, also known as Device Version Number
Serial string // Serial Number
Manufacturer string // Manufacturer String
Product string // Product string
UsagePage uint16 // Usage Page for this Device/Interface (Windows/Mac only)
Usage uint16 // Usage for this Device/Interface (Windows/Mac only)
// The USB interface which this logical device
// represents. Valid on both Linux implementations
// in all cases, and valid on the Windows implementation
// only if the device contains more than one interface.
Interface int
}

53
vendor/github.com/karalabe/hid/hid_disabled.go generated vendored Normal file
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// hid - Gopher Interface Devices (USB HID)
// Copyright (c) 2017 Péter Szilágyi. All rights reserved.
//
// This file is released under the 3-clause BSD license. Note however that Linux
// support depends on libusb, released under GNU GPL 2.1 or later.
// +build !linux
// +build !darwin ios
// +build !windows
package hid
// Supported returns whether this platform is supported by the HID library or not.
// The goal of this method is to allow programatically handling platforms that do
// not support USB HID and not having to fall back to build constraints.
func Supported() bool {
return false
}
// Enumerate returns a list of all the HID devices attached to the system which
// match the vendor and product id. On platforms that this file implements the
// function is a noop and returns an empty list always.
func Enumerate(vendorID uint16, productID uint16) []DeviceInfo {
return nil
}
// Device is a live HID USB connected device handle. On platforms that this file
// implements the type lacks the actual HID device and all methods are noop.
type Device struct {
DeviceInfo // Embed the infos for easier access
}
// Open connects to an HID device by its path name. On platforms that this file
// implements the method just returns an error.
func (info DeviceInfo) Open() (*Device, error) {
return nil, ErrUnsupportedPlatform
}
// Close releases the HID USB device handle. On platforms that this file implements
// the method is just a noop.
func (dev *Device) Close() {}
// Write sends an output report to a HID device. On platforms that this file
// implements the method just returns an error.
func (dev *Device) Write(b []byte) (int, error) {
return 0, ErrUnsupportedPlatform
}
// Read retrieves an input report from a HID device. On platforms that this file
// implements the method just returns an error.
func (dev *Device) Read(b []byte) (int, error) {
return 0, ErrUnsupportedPlatform
}

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// hid - Gopher Interface Devices (USB HID)
// Copyright (c) 2017 Péter Szilágyi. All rights reserved.
//
// This file is released under the 3-clause BSD license. Note however that Linux
// support depends on libusb, released under GNU GPL 2.1 or later.
// +build !ios
// +build linux darwin windows
package hid
/*
#cgo CFLAGS: -I./hidapi/hidapi
#cgo linux CFLAGS: -I./libusb/libusb -DDEFAULT_VISIBILITY="" -DOS_LINUX -D_GNU_SOURCE -DPOLL_NFDS_TYPE=int
#cgo darwin CFLAGS: -DOS_DARWIN
#cgo darwin LDFLAGS: -framework CoreFoundation -framework IOKit
#cgo windows CFLAGS: -DOS_WINDOWS
#cgo windows LDFLAGS: -lsetupapi
#ifdef OS_LINUX
#include <sys/poll.h>
#include "os/threads_posix.c"
#include "os/poll_posix.c"
#include "os/linux_usbfs.c"
#include "os/linux_netlink.c"
#include "core.c"
#include "descriptor.c"
#include "hotplug.c"
#include "io.c"
#include "strerror.c"
#include "sync.c"
#include "hidapi/libusb/hid.c"
#elif OS_DARWIN
#include "hidapi/mac/hid.c"
#elif OS_WINDOWS
#include "hidapi/windows/hid.c"
#endif
*/
import "C"
import (
"errors"
"runtime"
"sync"
"unsafe"
)
func init() {
// Initialize the HIDAPI library
C.hid_init()
}
// Supported returns whether this platform is supported by the HID library or not.
// The goal of this method is to allow programatically handling platforms that do
// not support USB HID and not having to fall back to build constraints.
func Supported() bool {
return true
}
// Enumerate returns a list of all the HID devices attached to the system which
// match the vendor and product id:
// - If the vendor id is set to 0 then any vendor matches.
// - If the product id is set to 0 then any product matches.
// - If the vendor and product id are both 0, all HID devices are returned.
func Enumerate(vendorID uint16, productID uint16) []DeviceInfo {
// Gather all device infos and ensure they are freed before returning
head := C.hid_enumerate(C.ushort(vendorID), C.ushort(productID))
if head == nil {
return nil
}
defer C.hid_free_enumeration(head)
// Iterate the list and retrieve the device details
var infos []DeviceInfo
for ; head != nil; head = head.next {
info := DeviceInfo{
Path: C.GoString(head.path),
VendorID: uint16(head.vendor_id),
ProductID: uint16(head.product_id),
Release: uint16(head.release_number),
UsagePage: uint16(head.usage_page),
Usage: uint16(head.usage),
Interface: int(head.interface_number),
}
if head.serial_number != nil {
info.Serial, _ = wcharTToString(head.serial_number)
}
if head.product_string != nil {
info.Product, _ = wcharTToString(head.product_string)
}
if head.manufacturer_string != nil {
info.Manufacturer, _ = wcharTToString(head.manufacturer_string)
}
infos = append(infos, info)
}
return infos
}
// Open connects to an HID device by its path name.
func (info DeviceInfo) Open() (*Device, error) {
path := C.CString(info.Path)
defer C.free(unsafe.Pointer(path))
device := C.hid_open_path(path)
if device == nil {
return nil, errors.New("hidapi: failed to open device")
}
return &Device{
DeviceInfo: info,
device: device,
}, nil
}
// Device is a live HID USB connected device handle.
type Device struct {
DeviceInfo // Embed the infos for easier access
device *C.hid_device // Low level HID device to communicate through
lock sync.Mutex
}
// Close releases the HID USB device handle.
func (dev *Device) Close() {
dev.lock.Lock()
defer dev.lock.Unlock()
if dev.device != nil {
C.hid_close(dev.device)
dev.device = nil
}
}
// Write sends an output report to a HID device.
//
// Write will send the data on the first OUT endpoint, if one exists. If it does
// not, it will send the data through the Control Endpoint (Endpoint 0).
func (dev *Device) Write(b []byte) (int, error) {
// Abort if nothing to write
if len(b) == 0 {
return 0, nil
}
// Abort if device closed in between
dev.lock.Lock()
device := dev.device
dev.lock.Unlock()
if device == nil {
return 0, ErrDeviceClosed
}
// Prepend a HID report ID on Windows, other OSes don't need it
var report []byte
if runtime.GOOS == "windows" {
report = append([]byte{0x00}, b...)
} else {
report = b
}
// Execute the write operation
written := int(C.hid_write(device, (*C.uchar)(&report[0]), C.size_t(len(report))))
if written == -1 {
// If the write failed, verify if closed or other error
dev.lock.Lock()
device = dev.device
dev.lock.Unlock()
if device == nil {
return 0, ErrDeviceClosed
}
// Device not closed, some other error occurred
message := C.hid_error(device)
if message == nil {
return 0, errors.New("hidapi: unknown failure")
}
failure, _ := wcharTToString(message)
return 0, errors.New("hidapi: " + failure)
}
return written, nil
}
// Read retrieves an input report from a HID device.
func (dev *Device) Read(b []byte) (int, error) {
// Aborth if nothing to read
if len(b) == 0 {
return 0, nil
}
// Abort if device closed in between
dev.lock.Lock()
device := dev.device
dev.lock.Unlock()
if device == nil {
return 0, ErrDeviceClosed
}
// Execute the read operation
read := int(C.hid_read(device, (*C.uchar)(&b[0]), C.size_t(len(b))))
if read == -1 {
// If the read failed, verify if closed or other error
dev.lock.Lock()
device = dev.device
dev.lock.Unlock()
if device == nil {
return 0, ErrDeviceClosed
}
// Device not closed, some other error occurred
message := C.hid_error(device)
if message == nil {
return 0, errors.New("hidapi: unknown failure")
}
failure, _ := wcharTToString(message)
return 0, errors.New("hidapi: " + failure)
}
return read, nil
}

16
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HIDAPI Authors:
Alan Ott <alan@signal11.us>:
Original Author and Maintainer
Linux, Windows, and Mac implementations
Ludovic Rousseau <rousseau@debian.org>:
Formatting for Doxygen documentation
Bug fixes
Correctness fixes
For a comprehensive list of contributions, see the commit list at github:
http://github.com/signal11/hidapi/commits/master

26
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Copyright (c) 2010, Alan Ott, Signal 11 Software
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
* Neither the name of Signal 11 Software nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

674
vendor/github.com/karalabe/hid/hidapi/LICENSE-gpl3.txt generated vendored Normal file
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@ -0,0 +1,674 @@
GNU GENERAL PUBLIC LICENSE
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How to Apply These Terms to Your New Programs
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Also add information on how to contact you by electronic and paper mail.
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<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
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You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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HIDAPI - Multi-Platform library for
communication with HID devices.
Copyright 2009, Alan Ott, Signal 11 Software.
All Rights Reserved.
This software may be used by anyone for any reason so
long as the copyright notice in the source files
remains intact.

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HIDAPI can be used under one of three licenses.
1. The GNU General Public License, version 3.0, in LICENSE-gpl3.txt
2. A BSD-Style License, in LICENSE-bsd.txt.
3. The more liberal original HIDAPI license. LICENSE-orig.txt
The license chosen is at the discretion of the user of HIDAPI. For example:
1. An author of GPL software would likely use HIDAPI under the terms of the
GPL.
2. An author of commercial closed-source software would likely use HIDAPI
under the terms of the BSD-style license or the original HIDAPI license.

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HIDAPI library for Windows, Linux, FreeBSD and Mac OS X
=========================================================
About
======
HIDAPI is a multi-platform library which allows an application to interface
with USB and Bluetooth HID-Class devices on Windows, Linux, FreeBSD, and Mac
OS X. HIDAPI can be either built as a shared library (.so or .dll) or
can be embedded directly into a target application by adding a single source
file (per platform) and a single header.
HIDAPI has four back-ends:
* Windows (using hid.dll)
* Linux/hidraw (using the Kernel's hidraw driver)
* Linux/libusb (using libusb-1.0)
* FreeBSD (using libusb-1.0)
* Mac (using IOHidManager)
On Linux, either the hidraw or the libusb back-end can be used. There are
tradeoffs, and the functionality supported is slightly different.
Linux/hidraw (linux/hid.c):
This back-end uses the hidraw interface in the Linux kernel. While this
back-end will support both USB and Bluetooth, it has some limitations on
kernels prior to 2.6.39, including the inability to send or receive feature
reports. In addition, it will only communicate with devices which have
hidraw nodes associated with them. Keyboards, mice, and some other devices
which are blacklisted from having hidraw nodes will not work. Fortunately,
for nearly all the uses of hidraw, this is not a problem.
Linux/FreeBSD/libusb (libusb/hid.c):
This back-end uses libusb-1.0 to communicate directly to a USB device. This
back-end will of course not work with Bluetooth devices.
HIDAPI also comes with a Test GUI. The Test GUI is cross-platform and uses
Fox Toolkit (http://www.fox-toolkit.org). It will build on every platform
which HIDAPI supports. Since it relies on a 3rd party library, building it
is optional but recommended because it is so useful when debugging hardware.
What Does the API Look Like?
=============================
The API provides the the most commonly used HID functions including sending
and receiving of input, output, and feature reports. The sample program,
which communicates with a heavily hacked up version of the Microchip USB
Generic HID sample looks like this (with error checking removed for
simplicity):
#ifdef WIN32
#include <windows.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include "hidapi.h"
#define MAX_STR 255
int main(int argc, char* argv[])
{
int res;
unsigned char buf[65];
wchar_t wstr[MAX_STR];
hid_device *handle;
int i;
// Initialize the hidapi library
res = hid_init();
// Open the device using the VID, PID,
// and optionally the Serial number.
handle = hid_open(0x4d8, 0x3f, NULL);
// Read the Manufacturer String
res = hid_get_manufacturer_string(handle, wstr, MAX_STR);
wprintf(L"Manufacturer String: %s\n", wstr);
// Read the Product String
res = hid_get_product_string(handle, wstr, MAX_STR);
wprintf(L"Product String: %s\n", wstr);
// Read the Serial Number String
res = hid_get_serial_number_string(handle, wstr, MAX_STR);
wprintf(L"Serial Number String: (%d) %s\n", wstr[0], wstr);
// Read Indexed String 1
res = hid_get_indexed_string(handle, 1, wstr, MAX_STR);
wprintf(L"Indexed String 1: %s\n", wstr);
// Toggle LED (cmd 0x80). The first byte is the report number (0x0).
buf[0] = 0x0;
buf[1] = 0x80;
res = hid_write(handle, buf, 65);
// Request state (cmd 0x81). The first byte is the report number (0x0).
buf[0] = 0x0;
buf[1] = 0x81;
res = hid_write(handle, buf, 65);
// Read requested state
res = hid_read(handle, buf, 65);
// Print out the returned buffer.
for (i = 0; i < 4; i++)
printf("buf[%d]: %d\n", i, buf[i]);
// Finalize the hidapi library
res = hid_exit();
return 0;
}
If you have your own simple test programs which communicate with standard
hardware development boards (such as those from Microchip, TI, Atmel,
FreeScale and others), please consider sending me something like the above
for inclusion into the HIDAPI source. This will help others who have the
same hardware as you do.
License
========
HIDAPI may be used by one of three licenses as outlined in LICENSE.txt.
Download
=========
HIDAPI can be downloaded from github
git clone git://github.com/signal11/hidapi.git
Build Instructions
===================
This section is long. Don't be put off by this. It's not long because it's
complicated to build HIDAPI; it's quite the opposite. This section is long
because of the flexibility of HIDAPI and the large number of ways in which
it can be built and used. You will likely pick a single build method.
HIDAPI can be built in several different ways. If you elect to build a
shared library, you will need to build it from the HIDAPI source
distribution. If you choose instead to embed HIDAPI directly into your
application, you can skip the building and look at the provided platform
Makefiles for guidance. These platform Makefiles are located in linux/
libusb/ mac/ and windows/ and are called Makefile-manual. In addition,
Visual Studio projects are provided. Even if you're going to embed HIDAPI
into your project, it is still beneficial to build the example programs.
Prerequisites:
---------------
Linux:
-------
On Linux, you will need to install development packages for libudev,
libusb and optionally Fox-toolkit (for the test GUI). On
Debian/Ubuntu systems these can be installed by running:
sudo apt-get install libudev-dev libusb-1.0-0-dev libfox-1.6-dev
If you downloaded the source directly from the git repository (using
git clone), you'll need Autotools:
sudo apt-get install autotools-dev autoconf automake libtool
FreeBSD:
---------
On FreeBSD you will need to install GNU make, libiconv, and
optionally Fox-Toolkit (for the test GUI). This is done by running
the following:
pkg_add -r gmake libiconv fox16
If you downloaded the source directly from the git repository (using
git clone), you'll need Autotools:
pkg_add -r autotools
Mac:
-----
On Mac, you will need to install Fox-Toolkit if you wish to build
the Test GUI. There are two ways to do this, and each has a slight
complication. Which method you use depends on your use case.
If you wish to build the Test GUI just for your own testing on your
own computer, then the easiest method is to install Fox-Toolkit
using ports:
sudo port install fox
If you wish to build the TestGUI app bundle to redistribute to
others, you will need to install Fox-toolkit from source. This is
because the version of fox that gets installed using ports uses the
ports X11 libraries which are not compatible with the Apple X11
libraries. If you install Fox with ports and then try to distribute
your built app bundle, it will simply fail to run on other systems.
To install Fox-Toolkit manually, download the source package from
http://www.fox-toolkit.org, extract it, and run the following from
within the extracted source:
./configure && make && make install
Windows:
---------
On Windows, if you want to build the test GUI, you will need to get
the hidapi-externals.zip package from the download site. This
contains pre-built binaries for Fox-toolkit. Extract
hidapi-externals.zip just outside of hidapi, so that
hidapi-externals and hidapi are on the same level, as shown:
Parent_Folder
|
+hidapi
+hidapi-externals
Again, this step is not required if you do not wish to build the
test GUI.
Building HIDAPI into a shared library on Unix Platforms:
---------------------------------------------------------
On Unix-like systems such as Linux, FreeBSD, Mac, and even Windows, using
Mingw or Cygwin, the easiest way to build a standard system-installed shared
library is to use the GNU Autotools build system. If you checked out the
source from the git repository, run the following:
./bootstrap
./configure
make
make install <----- as root, or using sudo
If you downloaded a source package (ie: if you did not run git clone), you
can skip the ./bootstrap step.
./configure can take several arguments which control the build. The two most
likely to be used are:
--enable-testgui
Enable build of the Test GUI. This requires Fox toolkit to
be installed. Instructions for installing Fox-Toolkit on
each platform are in the Prerequisites section above.
--prefix=/usr
Specify where you want the output headers and libraries to
be installed. The example above will put the headers in
/usr/include and the binaries in /usr/lib. The default is to
install into /usr/local which is fine on most systems.
Building the manual way on Unix platforms:
-------------------------------------------
Manual Makefiles are provided mostly to give the user and idea what it takes
to build a program which embeds HIDAPI directly inside of it. These should
really be used as examples only. If you want to build a system-wide shared
library, use the Autotools method described above.
To build HIDAPI using the manual makefiles, change to the directory
of your platform and run make. For example, on Linux run:
cd linux/
make -f Makefile-manual
To build the Test GUI using the manual makefiles:
cd testgui/
make -f Makefile-manual
Building on Windows:
---------------------
To build the HIDAPI DLL on Windows using Visual Studio, build the .sln file
in the windows/ directory.
To build the Test GUI on windows using Visual Studio, build the .sln file in
the testgui/ directory.
To build HIDAPI using MinGW or Cygwin using Autotools, use the instructions
in the section titled "Building HIDAPI into a shared library on Unix
Platforms" above. Note that building the Test GUI with MinGW or Cygwin will
require the Windows procedure in the Prerequisites section above (ie:
hidapi-externals.zip).
To build HIDAPI using MinGW using the Manual Makefiles, see the section
"Building the manual way on Unix platforms" above.
HIDAPI can also be built using the Windows DDK (now also called the Windows
Driver Kit or WDK). This method was originally required for the HIDAPI build
but not anymore. However, some users still prefer this method. It is not as
well supported anymore but should still work. Patches are welcome if it does
not. To build using the DDK:
1. Install the Windows Driver Kit (WDK) from Microsoft.
2. From the Start menu, in the Windows Driver Kits folder, select Build
Environments, then your operating system, then the x86 Free Build
Environment (or one that is appropriate for your system).
3. From the console, change directory to the windows/ddk_build/ directory,
which is part of the HIDAPI distribution.
4. Type build.
5. You can find the output files (DLL and LIB) in a subdirectory created
by the build system which is appropriate for your environment. On
Windows XP, this directory is objfre_wxp_x86/i386.
Cross Compiling
================
This section talks about cross compiling HIDAPI for Linux using autotools.
This is useful for using HIDAPI on embedded Linux targets. These
instructions assume the most raw kind of embedded Linux build, where all
prerequisites will need to be built first. This process will of course vary
based on your embedded Linux build system if you are using one, such as
OpenEmbedded or Buildroot.
For the purpose of this section, it will be assumed that the following
environment variables are exported.
$ export STAGING=$HOME/out
$ export HOST=arm-linux
STAGING and HOST can be modified to suit your setup.
Prerequisites
--------------
Note that the build of libudev is the very basic configuration.
Build Libusb. From the libusb source directory, run:
./configure --host=$HOST --prefix=$STAGING
make
make install
Build libudev. From the libudev source directory, run:
./configure --disable-gudev --disable-introspection --disable-hwdb \
--host=$HOST --prefix=$STAGING
make
make install
Building HIDAPI
----------------
Build HIDAPI:
PKG_CONFIG_DIR= \
PKG_CONFIG_LIBDIR=$STAGING/lib/pkgconfig:$STAGING/share/pkgconfig \
PKG_CONFIG_SYSROOT_DIR=$STAGING \
./configure --host=$HOST --prefix=$STAGING
Signal 11 Software - 2010-04-11
2010-07-28
2011-09-10
2012-05-01
2012-07-03

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/*******************************************************
HIDAPI - Multi-Platform library for
communication with HID devices.
Alan Ott
Signal 11 Software
8/22/2009
Copyright 2009, All Rights Reserved.
At the discretion of the user of this library,
this software may be licensed under the terms of the
GNU General Public License v3, a BSD-Style license, or the
original HIDAPI license as outlined in the LICENSE.txt,
LICENSE-gpl3.txt, LICENSE-bsd.txt, and LICENSE-orig.txt
files located at the root of the source distribution.
These files may also be found in the public source
code repository located at:
http://github.com/signal11/hidapi .
********************************************************/
/** @file
* @defgroup API hidapi API
*/
#ifndef HIDAPI_H__
#define HIDAPI_H__
#include <wchar.h>
#ifdef _WIN32
#define HID_API_EXPORT __declspec(dllexport)
#define HID_API_CALL
#else
#define HID_API_EXPORT /**< API export macro */
#define HID_API_CALL /**< API call macro */
#endif
#define HID_API_EXPORT_CALL HID_API_EXPORT HID_API_CALL /**< API export and call macro*/
#ifdef __cplusplus
extern "C" {
#endif
struct hid_device_;
typedef struct hid_device_ hid_device; /**< opaque hidapi structure */
/** hidapi info structure */
struct hid_device_info {
/** Platform-specific device path */
char *path;
/** Device Vendor ID */
unsigned short vendor_id;
/** Device Product ID */
unsigned short product_id;
/** Serial Number */
wchar_t *serial_number;
/** Device Release Number in binary-coded decimal,
also known as Device Version Number */
unsigned short release_number;
/** Manufacturer String */
wchar_t *manufacturer_string;
/** Product string */
wchar_t *product_string;
/** Usage Page for this Device/Interface
(Windows/Mac only). */
unsigned short usage_page;
/** Usage for this Device/Interface
(Windows/Mac only).*/
unsigned short usage;
/** The USB interface which this logical device
represents. Valid on both Linux implementations
in all cases, and valid on the Windows implementation
only if the device contains more than one interface. */
int interface_number;
/** Pointer to the next device */
struct hid_device_info *next;
};
/** @brief Initialize the HIDAPI library.
This function initializes the HIDAPI library. Calling it is not
strictly necessary, as it will be called automatically by
hid_enumerate() and any of the hid_open_*() functions if it is
needed. This function should be called at the beginning of
execution however, if there is a chance of HIDAPI handles
being opened by different threads simultaneously.
@ingroup API
@returns
This function returns 0 on success and -1 on error.
*/
int HID_API_EXPORT HID_API_CALL hid_init(void);
/** @brief Finalize the HIDAPI library.
This function frees all of the static data associated with
HIDAPI. It should be called at the end of execution to avoid
memory leaks.
@ingroup API
@returns
This function returns 0 on success and -1 on error.
*/
int HID_API_EXPORT HID_API_CALL hid_exit(void);
/** @brief Enumerate the HID Devices.
This function returns a linked list of all the HID devices
attached to the system which match vendor_id and product_id.
If @p vendor_id is set to 0 then any vendor matches.
If @p product_id is set to 0 then any product matches.
If @p vendor_id and @p product_id are both set to 0, then
all HID devices will be returned.
@ingroup API
@param vendor_id The Vendor ID (VID) of the types of device
to open.
@param product_id The Product ID (PID) of the types of
device to open.
@returns
This function returns a pointer to a linked list of type
struct #hid_device, containing information about the HID devices
attached to the system, or NULL in the case of failure. Free
this linked list by calling hid_free_enumeration().
*/
struct hid_device_info HID_API_EXPORT * HID_API_CALL hid_enumerate(unsigned short vendor_id, unsigned short product_id);
/** @brief Free an enumeration Linked List
This function frees a linked list created by hid_enumerate().
@ingroup API
@param devs Pointer to a list of struct_device returned from
hid_enumerate().
*/
void HID_API_EXPORT HID_API_CALL hid_free_enumeration(struct hid_device_info *devs);
/** @brief Open a HID device using a Vendor ID (VID), Product ID
(PID) and optionally a serial number.
If @p serial_number is NULL, the first device with the
specified VID and PID is opened.
@ingroup API
@param vendor_id The Vendor ID (VID) of the device to open.
@param product_id The Product ID (PID) of the device to open.
@param serial_number The Serial Number of the device to open
(Optionally NULL).
@returns
This function returns a pointer to a #hid_device object on
success or NULL on failure.
*/
HID_API_EXPORT hid_device * HID_API_CALL hid_open(unsigned short vendor_id, unsigned short product_id, const wchar_t *serial_number);
/** @brief Open a HID device by its path name.
The path name be determined by calling hid_enumerate(), or a
platform-specific path name can be used (eg: /dev/hidraw0 on
Linux).
@ingroup API
@param path The path name of the device to open
@returns
This function returns a pointer to a #hid_device object on
success or NULL on failure.
*/
HID_API_EXPORT hid_device * HID_API_CALL hid_open_path(const char *path);
/** @brief Write an Output report to a HID device.
The first byte of @p data[] must contain the Report ID. For
devices which only support a single report, this must be set
to 0x0. The remaining bytes contain the report data. Since
the Report ID is mandatory, calls to hid_write() will always
contain one more byte than the report contains. For example,
if a hid report is 16 bytes long, 17 bytes must be passed to
hid_write(), the Report ID (or 0x0, for devices with a
single report), followed by the report data (16 bytes). In
this example, the length passed in would be 17.
hid_write() will send the data on the first OUT endpoint, if
one exists. If it does not, it will send the data through
the Control Endpoint (Endpoint 0).
@ingroup API
@param device A device handle returned from hid_open().
@param data The data to send, including the report number as
the first byte.
@param length The length in bytes of the data to send.
@returns
This function returns the actual number of bytes written and
-1 on error.
*/
int HID_API_EXPORT HID_API_CALL hid_write(hid_device *device, const unsigned char *data, size_t length);
/** @brief Read an Input report from a HID device with timeout.
Input reports are returned
to the host through the INTERRUPT IN endpoint. The first byte will
contain the Report number if the device uses numbered reports.
@ingroup API
@param device A device handle returned from hid_open().
@param data A buffer to put the read data into.
@param length The number of bytes to read. For devices with
multiple reports, make sure to read an extra byte for
the report number.
@param milliseconds timeout in milliseconds or -1 for blocking wait.
@returns
This function returns the actual number of bytes read and
-1 on error. If no packet was available to be read within
the timeout period, this function returns 0.
*/
int HID_API_EXPORT HID_API_CALL hid_read_timeout(hid_device *dev, unsigned char *data, size_t length, int milliseconds);
/** @brief Read an Input report from a HID device.
Input reports are returned
to the host through the INTERRUPT IN endpoint. The first byte will
contain the Report number if the device uses numbered reports.
@ingroup API
@param device A device handle returned from hid_open().
@param data A buffer to put the read data into.
@param length The number of bytes to read. For devices with
multiple reports, make sure to read an extra byte for
the report number.
@returns
This function returns the actual number of bytes read and
-1 on error. If no packet was available to be read and
the handle is in non-blocking mode, this function returns 0.
*/
int HID_API_EXPORT HID_API_CALL hid_read(hid_device *device, unsigned char *data, size_t length);
/** @brief Set the device handle to be non-blocking.
In non-blocking mode calls to hid_read() will return
immediately with a value of 0 if there is no data to be
read. In blocking mode, hid_read() will wait (block) until
there is data to read before returning.
Nonblocking can be turned on and off at any time.
@ingroup API
@param device A device handle returned from hid_open().
@param nonblock enable or not the nonblocking reads
- 1 to enable nonblocking
- 0 to disable nonblocking.
@returns
This function returns 0 on success and -1 on error.
*/
int HID_API_EXPORT HID_API_CALL hid_set_nonblocking(hid_device *device, int nonblock);
/** @brief Send a Feature report to the device.
Feature reports are sent over the Control endpoint as a
Set_Report transfer. The first byte of @p data[] must
contain the Report ID. For devices which only support a
single report, this must be set to 0x0. The remaining bytes
contain the report data. Since the Report ID is mandatory,
calls to hid_send_feature_report() will always contain one
more byte than the report contains. For example, if a hid
report is 16 bytes long, 17 bytes must be passed to
hid_send_feature_report(): the Report ID (or 0x0, for
devices which do not use numbered reports), followed by the
report data (16 bytes). In this example, the length passed
in would be 17.
@ingroup API
@param device A device handle returned from hid_open().
@param data The data to send, including the report number as
the first byte.
@param length The length in bytes of the data to send, including
the report number.
@returns
This function returns the actual number of bytes written and
-1 on error.
*/
int HID_API_EXPORT HID_API_CALL hid_send_feature_report(hid_device *device, const unsigned char *data, size_t length);
/** @brief Get a feature report from a HID device.
Set the first byte of @p data[] to the Report ID of the
report to be read. Make sure to allow space for this
extra byte in @p data[]. Upon return, the first byte will
still contain the Report ID, and the report data will
start in data[1].
@ingroup API
@param device A device handle returned from hid_open().
@param data A buffer to put the read data into, including
the Report ID. Set the first byte of @p data[] to the
Report ID of the report to be read, or set it to zero
if your device does not use numbered reports.
@param length The number of bytes to read, including an
extra byte for the report ID. The buffer can be longer
than the actual report.
@returns
This function returns the number of bytes read plus
one for the report ID (which is still in the first
byte), or -1 on error.
*/
int HID_API_EXPORT HID_API_CALL hid_get_feature_report(hid_device *device, unsigned char *data, size_t length);
/** @brief Close a HID device.
@ingroup API
@param device A device handle returned from hid_open().
*/
void HID_API_EXPORT HID_API_CALL hid_close(hid_device *device);
/** @brief Get The Manufacturer String from a HID device.
@ingroup API
@param device A device handle returned from hid_open().
@param string A wide string buffer to put the data into.
@param maxlen The length of the buffer in multiples of wchar_t.
@returns
This function returns 0 on success and -1 on error.
*/
int HID_API_EXPORT_CALL hid_get_manufacturer_string(hid_device *device, wchar_t *string, size_t maxlen);
/** @brief Get The Product String from a HID device.
@ingroup API
@param device A device handle returned from hid_open().
@param string A wide string buffer to put the data into.
@param maxlen The length of the buffer in multiples of wchar_t.
@returns
This function returns 0 on success and -1 on error.
*/
int HID_API_EXPORT_CALL hid_get_product_string(hid_device *device, wchar_t *string, size_t maxlen);
/** @brief Get The Serial Number String from a HID device.
@ingroup API
@param device A device handle returned from hid_open().
@param string A wide string buffer to put the data into.
@param maxlen The length of the buffer in multiples of wchar_t.
@returns
This function returns 0 on success and -1 on error.
*/
int HID_API_EXPORT_CALL hid_get_serial_number_string(hid_device *device, wchar_t *string, size_t maxlen);
/** @brief Get a string from a HID device, based on its string index.
@ingroup API
@param device A device handle returned from hid_open().
@param string_index The index of the string to get.
@param string A wide string buffer to put the data into.
@param maxlen The length of the buffer in multiples of wchar_t.
@returns
This function returns 0 on success and -1 on error.
*/
int HID_API_EXPORT_CALL hid_get_indexed_string(hid_device *device, int string_index, wchar_t *string, size_t maxlen);
/** @brief Get a string describing the last error which occurred.
@ingroup API
@param device A device handle returned from hid_open().
@returns
This function returns a string containing the last error
which occurred or NULL if none has occurred.
*/
HID_API_EXPORT const wchar_t* HID_API_CALL hid_error(hid_device *device);
#ifdef __cplusplus
}
#endif
#endif

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/*******************************************************
HIDAPI - Multi-Platform library for
communication with HID devices.
Alan Ott
Signal 11 Software
8/22/2009
Copyright 2009, All Rights Reserved.
At the discretion of the user of this library,
this software may be licensed under the terms of the
GNU General Public License v3, a BSD-Style license, or the
original HIDAPI license as outlined in the LICENSE.txt,
LICENSE-gpl3.txt, LICENSE-bsd.txt, and LICENSE-orig.txt
files located at the root of the source distribution.
These files may also be found in the public source
code repository located at:
http://github.com/signal11/hidapi .
********************************************************/
#include <windows.h>
#ifndef _NTDEF_
typedef LONG NTSTATUS;
#endif
#ifdef __MINGW32__
#include <ntdef.h>
#include <winbase.h>
#endif
#ifdef __CYGWIN__
#include <ntdef.h>
#define _wcsdup wcsdup
#endif
/* The maximum number of characters that can be passed into the
HidD_Get*String() functions without it failing.*/
#define MAX_STRING_WCHARS 0xFFF
/*#define HIDAPI_USE_DDK*/
#ifdef __cplusplus
extern "C" {
#endif
#include <setupapi.h>
#include <winioctl.h>
#ifdef HIDAPI_USE_DDK
#include <hidsdi.h>
#endif
/* Copied from inc/ddk/hidclass.h, part of the Windows DDK. */
#define HID_OUT_CTL_CODE(id) \
CTL_CODE(FILE_DEVICE_KEYBOARD, (id), METHOD_OUT_DIRECT, FILE_ANY_ACCESS)
#define IOCTL_HID_GET_FEATURE HID_OUT_CTL_CODE(100)
#ifdef __cplusplus
} /* extern "C" */
#endif
#include <stdio.h>
#include <stdlib.h>
#include "hidapi.h"
#undef MIN
#define MIN(x,y) ((x) < (y)? (x): (y))
#ifdef _MSC_VER
/* Thanks Microsoft, but I know how to use strncpy(). */
#pragma warning(disable:4996)
#endif
#ifdef __cplusplus
extern "C" {
#endif
#ifndef HIDAPI_USE_DDK
/* Since we're not building with the DDK, and the HID header
files aren't part of the SDK, we have to define all this
stuff here. In lookup_functions(), the function pointers
defined below are set. */
typedef struct _HIDD_ATTRIBUTES{
ULONG Size;
USHORT VendorID;
USHORT ProductID;
USHORT VersionNumber;
} HIDD_ATTRIBUTES, *PHIDD_ATTRIBUTES;
typedef USHORT USAGE;
typedef struct _HIDP_CAPS {
USAGE Usage;
USAGE UsagePage;
USHORT InputReportByteLength;
USHORT OutputReportByteLength;
USHORT FeatureReportByteLength;
USHORT Reserved[17];
USHORT fields_not_used_by_hidapi[10];
} HIDP_CAPS, *PHIDP_CAPS;
typedef void* PHIDP_PREPARSED_DATA;
#define HIDP_STATUS_SUCCESS 0x110000
typedef BOOLEAN (__stdcall *HidD_GetAttributes_)(HANDLE device, PHIDD_ATTRIBUTES attrib);
typedef BOOLEAN (__stdcall *HidD_GetSerialNumberString_)(HANDLE device, PVOID buffer, ULONG buffer_len);
typedef BOOLEAN (__stdcall *HidD_GetManufacturerString_)(HANDLE handle, PVOID buffer, ULONG buffer_len);
typedef BOOLEAN (__stdcall *HidD_GetProductString_)(HANDLE handle, PVOID buffer, ULONG buffer_len);
typedef BOOLEAN (__stdcall *HidD_SetFeature_)(HANDLE handle, PVOID data, ULONG length);
typedef BOOLEAN (__stdcall *HidD_GetFeature_)(HANDLE handle, PVOID data, ULONG length);
typedef BOOLEAN (__stdcall *HidD_GetIndexedString_)(HANDLE handle, ULONG string_index, PVOID buffer, ULONG buffer_len);
typedef BOOLEAN (__stdcall *HidD_GetPreparsedData_)(HANDLE handle, PHIDP_PREPARSED_DATA *preparsed_data);
typedef BOOLEAN (__stdcall *HidD_FreePreparsedData_)(PHIDP_PREPARSED_DATA preparsed_data);
typedef NTSTATUS (__stdcall *HidP_GetCaps_)(PHIDP_PREPARSED_DATA preparsed_data, HIDP_CAPS *caps);
typedef BOOLEAN (__stdcall *HidD_SetNumInputBuffers_)(HANDLE handle, ULONG number_buffers);
static HidD_GetAttributes_ HidD_GetAttributes;
static HidD_GetSerialNumberString_ HidD_GetSerialNumberString;
static HidD_GetManufacturerString_ HidD_GetManufacturerString;
static HidD_GetProductString_ HidD_GetProductString;
static HidD_SetFeature_ HidD_SetFeature;
static HidD_GetFeature_ HidD_GetFeature;
static HidD_GetIndexedString_ HidD_GetIndexedString;
static HidD_GetPreparsedData_ HidD_GetPreparsedData;
static HidD_FreePreparsedData_ HidD_FreePreparsedData;
static HidP_GetCaps_ HidP_GetCaps;
static HidD_SetNumInputBuffers_ HidD_SetNumInputBuffers;
static HMODULE lib_handle = NULL;
static BOOLEAN initialized = FALSE;
#endif /* HIDAPI_USE_DDK */
struct hid_device_ {
HANDLE device_handle;
BOOL blocking;
USHORT output_report_length;
size_t input_report_length;
void *last_error_str;
DWORD last_error_num;
BOOL read_pending;
char *read_buf;
OVERLAPPED ol;
};
static hid_device *new_hid_device()
{
hid_device *dev = (hid_device*) calloc(1, sizeof(hid_device));
dev->device_handle = INVALID_HANDLE_VALUE;
dev->blocking = TRUE;
dev->output_report_length = 0;
dev->input_report_length = 0;
dev->last_error_str = NULL;
dev->last_error_num = 0;
dev->read_pending = FALSE;
dev->read_buf = NULL;
memset(&dev->ol, 0, sizeof(dev->ol));
dev->ol.hEvent = CreateEvent(NULL, FALSE, FALSE /*initial state f=nonsignaled*/, NULL);
return dev;
}
static void free_hid_device(hid_device *dev)
{
CloseHandle(dev->ol.hEvent);
CloseHandle(dev->device_handle);
LocalFree(dev->last_error_str);
free(dev->read_buf);
free(dev);
}
static void register_error(hid_device *device, const char *op)
{
WCHAR *ptr, *msg;
FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
(LPVOID)&msg, 0/*sz*/,
NULL);
/* Get rid of the CR and LF that FormatMessage() sticks at the
end of the message. Thanks Microsoft! */
ptr = msg;
while (*ptr) {
if (*ptr == '\r') {
*ptr = 0x0000;
break;
}
ptr++;
}
/* Store the message off in the Device entry so that
the hid_error() function can pick it up. */
LocalFree(device->last_error_str);
device->last_error_str = msg;
}
#ifndef HIDAPI_USE_DDK
static int lookup_functions()
{
lib_handle = LoadLibraryA("hid.dll");
if (lib_handle) {
#define RESOLVE(x) x = (x##_)GetProcAddress(lib_handle, #x); if (!x) return -1;
RESOLVE(HidD_GetAttributes);
RESOLVE(HidD_GetSerialNumberString);
RESOLVE(HidD_GetManufacturerString);
RESOLVE(HidD_GetProductString);
RESOLVE(HidD_SetFeature);
RESOLVE(HidD_GetFeature);
RESOLVE(HidD_GetIndexedString);
RESOLVE(HidD_GetPreparsedData);
RESOLVE(HidD_FreePreparsedData);
RESOLVE(HidP_GetCaps);
RESOLVE(HidD_SetNumInputBuffers);
#undef RESOLVE
}
else
return -1;
return 0;
}
#endif
static HANDLE open_device(const char *path, BOOL enumerate)
{
HANDLE handle;
DWORD desired_access = (enumerate)? 0: (GENERIC_WRITE | GENERIC_READ);
DWORD share_mode = FILE_SHARE_READ|FILE_SHARE_WRITE;
handle = CreateFileA(path,
desired_access,
share_mode,
NULL,
OPEN_EXISTING,
FILE_FLAG_OVERLAPPED,/*FILE_ATTRIBUTE_NORMAL,*/
0);
return handle;
}
int HID_API_EXPORT hid_init(void)
{
#ifndef HIDAPI_USE_DDK
if (!initialized) {
if (lookup_functions() < 0) {
hid_exit();
return -1;
}
initialized = TRUE;
}
#endif
return 0;
}
int HID_API_EXPORT hid_exit(void)
{
#ifndef HIDAPI_USE_DDK
if (lib_handle)
FreeLibrary(lib_handle);
lib_handle = NULL;
initialized = FALSE;
#endif
return 0;
}
struct hid_device_info HID_API_EXPORT * HID_API_CALL hid_enumerate(unsigned short vendor_id, unsigned short product_id)
{
BOOL res;
struct hid_device_info *root = NULL; /* return object */
struct hid_device_info *cur_dev = NULL;
/* Windows objects for interacting with the driver. */
GUID InterfaceClassGuid = {0x4d1e55b2, 0xf16f, 0x11cf, {0x88, 0xcb, 0x00, 0x11, 0x11, 0x00, 0x00, 0x30} };
SP_DEVINFO_DATA devinfo_data;
SP_DEVICE_INTERFACE_DATA device_interface_data;
SP_DEVICE_INTERFACE_DETAIL_DATA_A *device_interface_detail_data = NULL;
HDEVINFO device_info_set = INVALID_HANDLE_VALUE;
int device_index = 0;
int i;
if (hid_init() < 0)
return NULL;
/* Initialize the Windows objects. */
memset(&devinfo_data, 0x0, sizeof(devinfo_data));
devinfo_data.cbSize = sizeof(SP_DEVINFO_DATA);
device_interface_data.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);
/* Get information for all the devices belonging to the HID class. */
device_info_set = SetupDiGetClassDevsA(&InterfaceClassGuid, NULL, NULL, DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);
/* Iterate over each device in the HID class, looking for the right one. */
for (;;) {
HANDLE write_handle = INVALID_HANDLE_VALUE;
DWORD required_size = 0;
HIDD_ATTRIBUTES attrib;
res = SetupDiEnumDeviceInterfaces(device_info_set,
NULL,
&InterfaceClassGuid,
device_index,
&device_interface_data);
if (!res) {
/* A return of FALSE from this function means that
there are no more devices. */
break;
}
/* Call with 0-sized detail size, and let the function
tell us how long the detail struct needs to be. The
size is put in &required_size. */
res = SetupDiGetDeviceInterfaceDetailA(device_info_set,
&device_interface_data,
NULL,
0,
&required_size,
NULL);
/* Allocate a long enough structure for device_interface_detail_data. */
device_interface_detail_data = (SP_DEVICE_INTERFACE_DETAIL_DATA_A*) malloc(required_size);
device_interface_detail_data->cbSize = sizeof(SP_DEVICE_INTERFACE_DETAIL_DATA_A);
/* Get the detailed data for this device. The detail data gives us
the device path for this device, which is then passed into
CreateFile() to get a handle to the device. */
res = SetupDiGetDeviceInterfaceDetailA(device_info_set,
&device_interface_data,
device_interface_detail_data,
required_size,
NULL,
NULL);
if (!res) {
/* register_error(dev, "Unable to call SetupDiGetDeviceInterfaceDetail");
Continue to the next device. */
goto cont;
}
/* Make sure this device is of Setup Class "HIDClass" and has a
driver bound to it. */
for (i = 0; ; i++) {
char driver_name[256];
/* Populate devinfo_data. This function will return failure
when there are no more interfaces left. */
res = SetupDiEnumDeviceInfo(device_info_set, i, &devinfo_data);
if (!res)
goto cont;
res = SetupDiGetDeviceRegistryPropertyA(device_info_set, &devinfo_data,
SPDRP_CLASS, NULL, (PBYTE)driver_name, sizeof(driver_name), NULL);
if (!res)
goto cont;
if (strcmp(driver_name, "HIDClass") == 0) {
/* See if there's a driver bound. */
res = SetupDiGetDeviceRegistryPropertyA(device_info_set, &devinfo_data,
SPDRP_DRIVER, NULL, (PBYTE)driver_name, sizeof(driver_name), NULL);
if (res)
break;
}
}
//wprintf(L"HandleName: %s\n", device_interface_detail_data->DevicePath);
/* Open a handle to the device */
write_handle = open_device(device_interface_detail_data->DevicePath, TRUE);
/* Check validity of write_handle. */
if (write_handle == INVALID_HANDLE_VALUE) {
/* Unable to open the device. */
//register_error(dev, "CreateFile");
goto cont_close;
}
/* Get the Vendor ID and Product ID for this device. */
attrib.Size = sizeof(HIDD_ATTRIBUTES);
HidD_GetAttributes(write_handle, &attrib);
//wprintf(L"Product/Vendor: %x %x\n", attrib.ProductID, attrib.VendorID);
/* Check the VID/PID to see if we should add this
device to the enumeration list. */
if ((vendor_id == 0x0 || attrib.VendorID == vendor_id) &&
(product_id == 0x0 || attrib.ProductID == product_id)) {
#define WSTR_LEN 512
const char *str;
struct hid_device_info *tmp;
PHIDP_PREPARSED_DATA pp_data = NULL;
HIDP_CAPS caps;
BOOLEAN res;
NTSTATUS nt_res;
wchar_t wstr[WSTR_LEN]; /* TODO: Determine Size */
size_t len;
/* VID/PID match. Create the record. */
tmp = (struct hid_device_info*) calloc(1, sizeof(struct hid_device_info));
if (cur_dev) {
cur_dev->next = tmp;
}
else {
root = tmp;
}
cur_dev = tmp;
/* Get the Usage Page and Usage for this device. */
res = HidD_GetPreparsedData(write_handle, &pp_data);
if (res) {
nt_res = HidP_GetCaps(pp_data, &caps);
if (nt_res == HIDP_STATUS_SUCCESS) {
cur_dev->usage_page = caps.UsagePage;
cur_dev->usage = caps.Usage;
}
HidD_FreePreparsedData(pp_data);
}
/* Fill out the record */
cur_dev->next = NULL;
str = device_interface_detail_data->DevicePath;
if (str) {
len = strlen(str);
cur_dev->path = (char*) calloc(len+1, sizeof(char));
strncpy(cur_dev->path, str, len+1);
cur_dev->path[len] = '\0';
}
else
cur_dev->path = NULL;
/* Serial Number */
res = HidD_GetSerialNumberString(write_handle, wstr, sizeof(wstr));
wstr[WSTR_LEN-1] = 0x0000;
if (res) {
cur_dev->serial_number = _wcsdup(wstr);
}
/* Manufacturer String */
res = HidD_GetManufacturerString(write_handle, wstr, sizeof(wstr));
wstr[WSTR_LEN-1] = 0x0000;
if (res) {
cur_dev->manufacturer_string = _wcsdup(wstr);
}
/* Product String */
res = HidD_GetProductString(write_handle, wstr, sizeof(wstr));
wstr[WSTR_LEN-1] = 0x0000;
if (res) {
cur_dev->product_string = _wcsdup(wstr);
}
/* VID/PID */
cur_dev->vendor_id = attrib.VendorID;
cur_dev->product_id = attrib.ProductID;
/* Release Number */
cur_dev->release_number = attrib.VersionNumber;
/* Interface Number. It can sometimes be parsed out of the path
on Windows if a device has multiple interfaces. See
http://msdn.microsoft.com/en-us/windows/hardware/gg487473 or
search for "Hardware IDs for HID Devices" at MSDN. If it's not
in the path, it's set to -1. */
cur_dev->interface_number = -1;
if (cur_dev->path) {
char *interface_component = strstr(cur_dev->path, "&mi_");
if (interface_component) {
char *hex_str = interface_component + 4;
char *endptr = NULL;
cur_dev->interface_number = strtol(hex_str, &endptr, 16);
if (endptr == hex_str) {
/* The parsing failed. Set interface_number to -1. */
cur_dev->interface_number = -1;
}
}
}
}
cont_close:
CloseHandle(write_handle);
cont:
/* We no longer need the detail data. It can be freed */
free(device_interface_detail_data);
device_index++;
}
/* Close the device information handle. */
SetupDiDestroyDeviceInfoList(device_info_set);
return root;
}
void HID_API_EXPORT HID_API_CALL hid_free_enumeration(struct hid_device_info *devs)
{
/* TODO: Merge this with the Linux version. This function is platform-independent. */
struct hid_device_info *d = devs;
while (d) {
struct hid_device_info *next = d->next;
free(d->path);
free(d->serial_number);
free(d->manufacturer_string);
free(d->product_string);
free(d);
d = next;
}
}
HID_API_EXPORT hid_device * HID_API_CALL hid_open(unsigned short vendor_id, unsigned short product_id, const wchar_t *serial_number)
{
/* TODO: Merge this functions with the Linux version. This function should be platform independent. */
struct hid_device_info *devs, *cur_dev;
const char *path_to_open = NULL;
hid_device *handle = NULL;
devs = hid_enumerate(vendor_id, product_id);
cur_dev = devs;
while (cur_dev) {
if (cur_dev->vendor_id == vendor_id &&
cur_dev->product_id == product_id) {
if (serial_number) {
if (wcscmp(serial_number, cur_dev->serial_number) == 0) {
path_to_open = cur_dev->path;
break;
}
}
else {
path_to_open = cur_dev->path;
break;
}
}
cur_dev = cur_dev->next;
}
if (path_to_open) {
/* Open the device */
handle = hid_open_path(path_to_open);
}
hid_free_enumeration(devs);
return handle;
}
HID_API_EXPORT hid_device * HID_API_CALL hid_open_path(const char *path)
{
hid_device *dev;
HIDP_CAPS caps;
PHIDP_PREPARSED_DATA pp_data = NULL;
BOOLEAN res;
NTSTATUS nt_res;
if (hid_init() < 0) {
return NULL;
}
dev = new_hid_device();
/* Open a handle to the device */
dev->device_handle = open_device(path, FALSE);
/* Check validity of write_handle. */
if (dev->device_handle == INVALID_HANDLE_VALUE) {
/* Unable to open the device. */
register_error(dev, "CreateFile");
goto err;
}
/* Set the Input Report buffer size to 64 reports. */
res = HidD_SetNumInputBuffers(dev->device_handle, 64);
if (!res) {
register_error(dev, "HidD_SetNumInputBuffers");
goto err;
}
/* Get the Input Report length for the device. */
res = HidD_GetPreparsedData(dev->device_handle, &pp_data);
if (!res) {
register_error(dev, "HidD_GetPreparsedData");
goto err;
}
nt_res = HidP_GetCaps(pp_data, &caps);
if (nt_res != HIDP_STATUS_SUCCESS) {
register_error(dev, "HidP_GetCaps");
goto err_pp_data;
}
dev->output_report_length = caps.OutputReportByteLength;
dev->input_report_length = caps.InputReportByteLength;
HidD_FreePreparsedData(pp_data);
dev->read_buf = (char*) malloc(dev->input_report_length);
return dev;
err_pp_data:
HidD_FreePreparsedData(pp_data);
err:
free_hid_device(dev);
return NULL;
}
int HID_API_EXPORT HID_API_CALL hid_write(hid_device *dev, const unsigned char *data, size_t length)
{
DWORD bytes_written;
BOOL res;
OVERLAPPED ol;
unsigned char *buf;
memset(&ol, 0, sizeof(ol));
/* Make sure the right number of bytes are passed to WriteFile. Windows
expects the number of bytes which are in the _longest_ report (plus
one for the report number) bytes even if the data is a report
which is shorter than that. Windows gives us this value in
caps.OutputReportByteLength. If a user passes in fewer bytes than this,
create a temporary buffer which is the proper size. */
if (length >= dev->output_report_length) {
/* The user passed the right number of bytes. Use the buffer as-is. */
buf = (unsigned char *) data;
} else {
/* Create a temporary buffer and copy the user's data
into it, padding the rest with zeros. */
buf = (unsigned char *) malloc(dev->output_report_length);
memcpy(buf, data, length);
memset(buf + length, 0, dev->output_report_length - length);
length = dev->output_report_length;
}
res = WriteFile(dev->device_handle, buf, length, NULL, &ol);
if (!res) {
if (GetLastError() != ERROR_IO_PENDING) {
/* WriteFile() failed. Return error. */
register_error(dev, "WriteFile");
bytes_written = -1;
goto end_of_function;
}
}
/* Wait here until the write is done. This makes
hid_write() synchronous. */
res = GetOverlappedResult(dev->device_handle, &ol, &bytes_written, TRUE/*wait*/);
if (!res) {
/* The Write operation failed. */
register_error(dev, "WriteFile");
bytes_written = -1;
goto end_of_function;
}
end_of_function:
if (buf != data)
free(buf);
return bytes_written;
}
int HID_API_EXPORT HID_API_CALL hid_read_timeout(hid_device *dev, unsigned char *data, size_t length, int milliseconds)
{
DWORD bytes_read = 0;
size_t copy_len = 0;
BOOL res;
/* Copy the handle for convenience. */
HANDLE ev = dev->ol.hEvent;
if (!dev->read_pending) {
/* Start an Overlapped I/O read. */
dev->read_pending = TRUE;
memset(dev->read_buf, 0, dev->input_report_length);
ResetEvent(ev);
res = ReadFile(dev->device_handle, dev->read_buf, dev->input_report_length, &bytes_read, &dev->ol);
if (!res) {
if (GetLastError() != ERROR_IO_PENDING) {
/* ReadFile() has failed.
Clean up and return error. */
CancelIo(dev->device_handle);
dev->read_pending = FALSE;
goto end_of_function;
}
}
}
if (milliseconds >= 0) {
/* See if there is any data yet. */
res = WaitForSingleObject(ev, milliseconds);
if (res != WAIT_OBJECT_0) {
/* There was no data this time. Return zero bytes available,
but leave the Overlapped I/O running. */
return 0;
}
}
/* Either WaitForSingleObject() told us that ReadFile has completed, or
we are in non-blocking mode. Get the number of bytes read. The actual
data has been copied to the data[] array which was passed to ReadFile(). */
res = GetOverlappedResult(dev->device_handle, &dev->ol, &bytes_read, TRUE/*wait*/);
/* Set pending back to false, even if GetOverlappedResult() returned error. */
dev->read_pending = FALSE;
if (res && bytes_read > 0) {
if (dev->read_buf[0] == 0x0) {
/* If report numbers aren't being used, but Windows sticks a report
number (0x0) on the beginning of the report anyway. To make this
work like the other platforms, and to make it work more like the
HID spec, we'll skip over this byte. */
bytes_read--;
copy_len = length > bytes_read ? bytes_read : length;
memcpy(data, dev->read_buf+1, copy_len);
}
else {
/* Copy the whole buffer, report number and all. */
copy_len = length > bytes_read ? bytes_read : length;
memcpy(data, dev->read_buf, copy_len);
}
}
end_of_function:
if (!res) {
register_error(dev, "GetOverlappedResult");
return -1;
}
return copy_len;
}
int HID_API_EXPORT HID_API_CALL hid_read(hid_device *dev, unsigned char *data, size_t length)
{
return hid_read_timeout(dev, data, length, (dev->blocking)? -1: 0);
}
int HID_API_EXPORT HID_API_CALL hid_set_nonblocking(hid_device *dev, int nonblock)
{
dev->blocking = !nonblock;
return 0; /* Success */
}
int HID_API_EXPORT HID_API_CALL hid_send_feature_report(hid_device *dev, const unsigned char *data, size_t length)
{
BOOL res = HidD_SetFeature(dev->device_handle, (PVOID)data, length);
if (!res) {
register_error(dev, "HidD_SetFeature");
return -1;
}
return length;
}
int HID_API_EXPORT HID_API_CALL hid_get_feature_report(hid_device *dev, unsigned char *data, size_t length)
{
BOOL res;
#if 0
res = HidD_GetFeature(dev->device_handle, data, length);
if (!res) {
register_error(dev, "HidD_GetFeature");
return -1;
}
return 0; /* HidD_GetFeature() doesn't give us an actual length, unfortunately */
#else
DWORD bytes_returned;
OVERLAPPED ol;
memset(&ol, 0, sizeof(ol));
res = DeviceIoControl(dev->device_handle,
IOCTL_HID_GET_FEATURE,
data, length,
data, length,
&bytes_returned, &ol);
if (!res) {
if (GetLastError() != ERROR_IO_PENDING) {
/* DeviceIoControl() failed. Return error. */
register_error(dev, "Send Feature Report DeviceIoControl");
return -1;
}
}
/* Wait here until the write is done. This makes
hid_get_feature_report() synchronous. */
res = GetOverlappedResult(dev->device_handle, &ol, &bytes_returned, TRUE/*wait*/);
if (!res) {
/* The operation failed. */
register_error(dev, "Send Feature Report GetOverLappedResult");
return -1;
}
/* bytes_returned does not include the first byte which contains the
report ID. The data buffer actually contains one more byte than
bytes_returned. */
bytes_returned++;
return bytes_returned;
#endif
}
void HID_API_EXPORT HID_API_CALL hid_close(hid_device *dev)
{
if (!dev)
return;
CancelIo(dev->device_handle);
free_hid_device(dev);
}
int HID_API_EXPORT_CALL HID_API_CALL hid_get_manufacturer_string(hid_device *dev, wchar_t *string, size_t maxlen)
{
BOOL res;
res = HidD_GetManufacturerString(dev->device_handle, string, sizeof(wchar_t) * MIN(maxlen, MAX_STRING_WCHARS));
if (!res) {
register_error(dev, "HidD_GetManufacturerString");
return -1;
}
return 0;
}
int HID_API_EXPORT_CALL HID_API_CALL hid_get_product_string(hid_device *dev, wchar_t *string, size_t maxlen)
{
BOOL res;
res = HidD_GetProductString(dev->device_handle, string, sizeof(wchar_t) * MIN(maxlen, MAX_STRING_WCHARS));
if (!res) {
register_error(dev, "HidD_GetProductString");
return -1;
}
return 0;
}
int HID_API_EXPORT_CALL HID_API_CALL hid_get_serial_number_string(hid_device *dev, wchar_t *string, size_t maxlen)
{
BOOL res;
res = HidD_GetSerialNumberString(dev->device_handle, string, sizeof(wchar_t) * MIN(maxlen, MAX_STRING_WCHARS));
if (!res) {
register_error(dev, "HidD_GetSerialNumberString");
return -1;
}
return 0;
}
int HID_API_EXPORT_CALL HID_API_CALL hid_get_indexed_string(hid_device *dev, int string_index, wchar_t *string, size_t maxlen)
{
BOOL res;
res = HidD_GetIndexedString(dev->device_handle, string_index, string, sizeof(wchar_t) * MIN(maxlen, MAX_STRING_WCHARS));
if (!res) {
register_error(dev, "HidD_GetIndexedString");
return -1;
}
return 0;
}
HID_API_EXPORT const wchar_t * HID_API_CALL hid_error(hid_device *dev)
{
return (wchar_t*)dev->last_error_str;
}
/*#define PICPGM*/
/*#define S11*/
#define P32
#ifdef S11
unsigned short VendorID = 0xa0a0;
unsigned short ProductID = 0x0001;
#endif
#ifdef P32
unsigned short VendorID = 0x04d8;
unsigned short ProductID = 0x3f;
#endif
#ifdef PICPGM
unsigned short VendorID = 0x04d8;
unsigned short ProductID = 0x0033;
#endif
#if 0
int __cdecl main(int argc, char* argv[])
{
int res;
unsigned char buf[65];
UNREFERENCED_PARAMETER(argc);
UNREFERENCED_PARAMETER(argv);
/* Set up the command buffer. */
memset(buf,0x00,sizeof(buf));
buf[0] = 0;
buf[1] = 0x81;
/* Open the device. */
int handle = open(VendorID, ProductID, L"12345");
if (handle < 0)
printf("unable to open device\n");
/* Toggle LED (cmd 0x80) */
buf[1] = 0x80;
res = write(handle, buf, 65);
if (res < 0)
printf("Unable to write()\n");
/* Request state (cmd 0x81) */
buf[1] = 0x81;
write(handle, buf, 65);
if (res < 0)
printf("Unable to write() (2)\n");
/* Read requested state */
read(handle, buf, 65);
if (res < 0)
printf("Unable to read()\n");
/* Print out the returned buffer. */
for (int i = 0; i < 4; i++)
printf("buf[%d]: %d\n", i, buf[i]);
return 0;
}
#endif
#ifdef __cplusplus
} /* extern "C" */
#endif

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vendor/github.com/karalabe/gousb/internal/libusb/AUTHORS → vendor/github.com/karalabe/hid/libusb/AUTHORS generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/COPYING → vendor/github.com/karalabe/hid/libusb/COPYING generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/config.h → vendor/github.com/karalabe/hid/libusb/libusb/config.h generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/core.c → vendor/github.com/karalabe/hid/libusb/libusb/core.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/descriptor.c → vendor/github.com/karalabe/hid/libusb/libusb/descriptor.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/hotplug.c → vendor/github.com/karalabe/hid/libusb/libusb/hotplug.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/hotplug.h → vendor/github.com/karalabe/hid/libusb/libusb/hotplug.h generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/io.c → vendor/github.com/karalabe/hid/libusb/libusb/io.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/libusb.h → vendor/github.com/karalabe/hid/libusb/libusb/libusb.h generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/libusbi.h → vendor/github.com/karalabe/hid/libusb/libusb/libusbi.h generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/darwin_usb.c → vendor/github.com/karalabe/hid/libusb/libusb/os/darwin_usb.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/darwin_usb.h → vendor/github.com/karalabe/hid/libusb/libusb/os/darwin_usb.h generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/haiku_pollfs.cpp → vendor/github.com/karalabe/hid/libusb/libusb/os/haiku_pollfs.cpp generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/haiku_usb.h → vendor/github.com/karalabe/hid/libusb/libusb/os/haiku_usb.h generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/haiku_usb_backend.cpp → vendor/github.com/karalabe/hid/libusb/libusb/os/haiku_usb_backend.cpp generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/haiku_usb_raw.cpp → vendor/github.com/karalabe/hid/libusb/libusb/os/haiku_usb_raw.cpp generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/haiku_usb_raw.h → vendor/github.com/karalabe/hid/libusb/libusb/os/haiku_usb_raw.h generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/linux_netlink.c → vendor/github.com/karalabe/hid/libusb/libusb/os/linux_netlink.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/linux_udev.c → vendor/github.com/karalabe/hid/libusb/libusb/os/linux_udev.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/linux_usbfs.c → vendor/github.com/karalabe/hid/libusb/libusb/os/linux_usbfs.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/linux_usbfs.h → vendor/github.com/karalabe/hid/libusb/libusb/os/linux_usbfs.h generated vendored
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0
vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/netbsd_usb.c → vendor/github.com/karalabe/hid/libusb/libusb/os/netbsd_usb.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/openbsd_usb.c → vendor/github.com/karalabe/hid/libusb/libusb/os/openbsd_usb.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/poll_posix.c → vendor/github.com/karalabe/hid/libusb/libusb/os/poll_posix.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/poll_posix.h → vendor/github.com/karalabe/hid/libusb/libusb/os/poll_posix.h generated vendored
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0
vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/poll_windows.c → vendor/github.com/karalabe/hid/libusb/libusb/os/poll_windows.c generated vendored
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0
vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/poll_windows.h → vendor/github.com/karalabe/hid/libusb/libusb/os/poll_windows.h generated vendored
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0
vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/sunos_usb.c → vendor/github.com/karalabe/hid/libusb/libusb/os/sunos_usb.c generated vendored
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0
vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/sunos_usb.h → vendor/github.com/karalabe/hid/libusb/libusb/os/sunos_usb.h generated vendored
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0
vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/threads_posix.c → vendor/github.com/karalabe/hid/libusb/libusb/os/threads_posix.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/threads_posix.h → vendor/github.com/karalabe/hid/libusb/libusb/os/threads_posix.h generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/threads_windows.c → vendor/github.com/karalabe/hid/libusb/libusb/os/threads_windows.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/threads_windows.h → vendor/github.com/karalabe/hid/libusb/libusb/os/threads_windows.h generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/wince_usb.c → vendor/github.com/karalabe/hid/libusb/libusb/os/wince_usb.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/wince_usb.h → vendor/github.com/karalabe/hid/libusb/libusb/os/wince_usb.h generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/windows_common.h → vendor/github.com/karalabe/hid/libusb/libusb/os/windows_common.h generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/windows_nt_common.c → vendor/github.com/karalabe/hid/libusb/libusb/os/windows_nt_common.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/windows_nt_common.h → vendor/github.com/karalabe/hid/libusb/libusb/os/windows_nt_common.h generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/windows_usbdk.c → vendor/github.com/karalabe/hid/libusb/libusb/os/windows_usbdk.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/windows_usbdk.h → vendor/github.com/karalabe/hid/libusb/libusb/os/windows_usbdk.h generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/windows_winusb.c → vendor/github.com/karalabe/hid/libusb/libusb/os/windows_winusb.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/os/windows_winusb.h → vendor/github.com/karalabe/hid/libusb/libusb/os/windows_winusb.h generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/strerror.c → vendor/github.com/karalabe/hid/libusb/libusb/strerror.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/sync.c → vendor/github.com/karalabe/hid/libusb/libusb/sync.c generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/version.h → vendor/github.com/karalabe/hid/libusb/libusb/version.h generated vendored
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vendor/github.com/karalabe/gousb/internal/libusb/libusb/version_nano.h → vendor/github.com/karalabe/hid/libusb/libusb/version_nano.h generated vendored
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vendor/github.com/karalabe/hid/wchar.go generated vendored Normal file
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@ -0,0 +1,227 @@
// This file is https://github.com/orofarne/gowchar/blob/master/gowchar.go
//
// It was vendored inline to work around CGO limitations that don't allow C types
// to directly cross package API boundaries.
//
// The vendored file is licensed under the 3-clause BSD license, according to:
// https://github.com/orofarne/gowchar/blob/master/LICENSE
// +build !ios
// +build linux darwin windows
package hid
/*
#include <wchar.h>
const size_t SIZEOF_WCHAR_T = sizeof(wchar_t);
void gowchar_set (wchar_t *arr, int pos, wchar_t val)
{
arr[pos] = val;
}
wchar_t gowchar_get (wchar_t *arr, int pos)
{
return arr[pos];
}
*/
import "C"
import (
"fmt"
"unicode/utf16"
"unicode/utf8"
)
var sizeofWcharT C.size_t = C.size_t(C.SIZEOF_WCHAR_T)
func stringToWcharT(s string) (*C.wchar_t, C.size_t) {
switch sizeofWcharT {
case 2:
return stringToWchar2(s) // Windows
case 4:
return stringToWchar4(s) // Unix
default:
panic(fmt.Sprintf("Invalid sizeof(wchar_t) = %v", sizeofWcharT))
}
}
func wcharTToString(s *C.wchar_t) (string, error) {
switch sizeofWcharT {
case 2:
return wchar2ToString(s) // Windows
case 4:
return wchar4ToString(s) // Unix
default:
panic(fmt.Sprintf("Invalid sizeof(wchar_t) = %v", sizeofWcharT))
}
}
func wcharTNToString(s *C.wchar_t, size C.size_t) (string, error) {
switch sizeofWcharT {
case 2:
return wchar2NToString(s, size) // Windows
case 4:
return wchar4NToString(s, size) // Unix
default:
panic(fmt.Sprintf("Invalid sizeof(wchar_t) = %v", sizeofWcharT))
}
}
// Windows
func stringToWchar2(s string) (*C.wchar_t, C.size_t) {
var slen int
s1 := s
for len(s1) > 0 {
r, size := utf8.DecodeRuneInString(s1)
if er, _ := utf16.EncodeRune(r); er == '\uFFFD' {
slen += 1
} else {
slen += 2
}
s1 = s1[size:]
}
slen++ // \0
res := C.malloc(C.size_t(slen) * sizeofWcharT)
var i int
for len(s) > 0 {
r, size := utf8.DecodeRuneInString(s)
if r1, r2 := utf16.EncodeRune(r); r1 != '\uFFFD' {
C.gowchar_set((*C.wchar_t)(res), C.int(i), C.wchar_t(r1))
i++
C.gowchar_set((*C.wchar_t)(res), C.int(i), C.wchar_t(r2))
i++
} else {
C.gowchar_set((*C.wchar_t)(res), C.int(i), C.wchar_t(r))
i++
}
s = s[size:]
}
C.gowchar_set((*C.wchar_t)(res), C.int(slen-1), C.wchar_t(0)) // \0
return (*C.wchar_t)(res), C.size_t(slen)
}
// Unix
func stringToWchar4(s string) (*C.wchar_t, C.size_t) {
slen := utf8.RuneCountInString(s)
slen++ // \0
res := C.malloc(C.size_t(slen) * sizeofWcharT)
var i int
for len(s) > 0 {
r, size := utf8.DecodeRuneInString(s)
C.gowchar_set((*C.wchar_t)(res), C.int(i), C.wchar_t(r))
s = s[size:]
i++
}
C.gowchar_set((*C.wchar_t)(res), C.int(slen-1), C.wchar_t(0)) // \0
return (*C.wchar_t)(res), C.size_t(slen)
}
// Windows
func wchar2ToString(s *C.wchar_t) (string, error) {
var i int
var res string
for {
ch := C.gowchar_get(s, C.int(i))
if ch == 0 {
break
}
r := rune(ch)
i++
if !utf16.IsSurrogate(r) {
if !utf8.ValidRune(r) {
err := fmt.Errorf("Invalid rune at position %v", i)
return "", err
}
res += string(r)
} else {
ch2 := C.gowchar_get(s, C.int(i))
r2 := rune(ch2)
r12 := utf16.DecodeRune(r, r2)
if r12 == '\uFFFD' {
err := fmt.Errorf("Invalid surrogate pair at position %v", i-1)
return "", err
}
res += string(r12)
i++
}
}
return res, nil
}
// Unix
func wchar4ToString(s *C.wchar_t) (string, error) {
var i int
var res string
for {
ch := C.gowchar_get(s, C.int(i))
if ch == 0 {
break
}
r := rune(ch)
if !utf8.ValidRune(r) {
err := fmt.Errorf("Invalid rune at position %v", i)
return "", err
}
res += string(r)
i++
}
return res, nil
}
// Windows
func wchar2NToString(s *C.wchar_t, size C.size_t) (string, error) {
var i int
var res string
N := int(size)
for i < N {
ch := C.gowchar_get(s, C.int(i))
if ch == 0 {
break
}
r := rune(ch)
i++
if !utf16.IsSurrogate(r) {
if !utf8.ValidRune(r) {
err := fmt.Errorf("Invalid rune at position %v", i)
return "", err
}
res += string(r)
} else {
if i >= N {
err := fmt.Errorf("Invalid surrogate pair at position %v", i-1)
return "", err
}
ch2 := C.gowchar_get(s, C.int(i))
r2 := rune(ch2)
r12 := utf16.DecodeRune(r, r2)
if r12 == '\uFFFD' {
err := fmt.Errorf("Invalid surrogate pair at position %v", i-1)
return "", err
}
res += string(r12)
i++
}
}
return res, nil
}
// Unix
func wchar4NToString(s *C.wchar_t, size C.size_t) (string, error) {
var i int
var res string
N := int(size)
for i < N {
ch := C.gowchar_get(s, C.int(i))
r := rune(ch)
if !utf8.ValidRune(r) {
err := fmt.Errorf("Invalid rune at position %v", i)
return "", err
}
res += string(r)
i++
}
return res, nil
}

9
vendor/vendor.json vendored
View File

@ -113,10 +113,11 @@
"revisionTime": "2016-06-03T03:41:37Z"
},
{
"checksumSHA1": "SdiKy93Lsh3ly7I2E7vhlyp2Xq8=",
"path": "github.com/karalabe/gousb/usb",
"revision": "ffa821b2e25aa1828ffca731f759a1ebfa410d73",
"revisionTime": "2017-01-24T16:09:49Z"
"checksumSHA1": "HKy8oSpuboe02Uqq+43zbIzD/AY=",
"path": "github.com/karalabe/hid",
"revision": "40280bf4f6fc762010efeb066cbff7490d467f03",
"revisionTime": "2017-02-17T09:52:56Z",
"tree": true
},
{
"checksumSHA1": "7hln62oZPZmyqEmgXaybf9WxQ7A=",