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unleashed-firmware/targets/f7/furi_hal/furi_hal_usb_hid.c
hedger 890c9e87ce
[FL-3690] Libraries cleanup; u2f crypto rework to use mbedtls (#3234) 
* examples: plugins: utilize fal_embedded
* libs: removed fnv1a_hash
* furi: added FURI_PACKED; apps, libs: changed to use FURI_PACKED
* lib: mbedtls: using custom config
* lib: toolbox: removed md5, switched to mbedtls
* targets: f18: link fix
* lib: added mbedtls_cfg.h
* apps: nfc: explicit dependency on libmbedtls
* u2f: reworking to mbedtls
* u2f: replaced sha256 & hmac with mbedtls
* u2f: functional rework using mbedtls
* libs: dropped micro-ecc
* u2f: dropped old implementation
* toolbox: removed sha256 impl
* mcheck() for mbedtls
* libs: removed libmisc; split into smaller libs
* apps: debug: fixed display_test
* apps: include cleanups
* fbt: fixed VERSIONCOMSTR
* furi: added FURI_CHECK_RETURN
* lib: removed qrcode
* cleanup
* fbt: lint_py+format_py: fixed excessive command length
* api: Removed bzero from f7
* api: Removed bzero from f18
* Bump API Symbols

Co-authored-by: Aleksandr Kutuzov <alleteam@gmail.com>
2023-12-01 18:16:48 +09:00

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#include <furi_hal_version.h>
#include <furi_hal_usb_i.h>
#include <furi_hal_usb.h>
#include <furi_hal_usb_hid.h>
#include <furi.h>
#include "usb.h"
#include "usb_hid.h"
#define HID_EP_IN 0x81
#define HID_EP_SZ 0x10
#define HID_INTERVAL 2
#define HID_VID_DEFAULT 0x046D
#define HID_PID_DEFAULT 0xC529
struct HidIntfDescriptor {
struct usb_interface_descriptor hid;
struct usb_hid_descriptor hid_desc;
struct usb_endpoint_descriptor hid_ep_in;
};
struct HidConfigDescriptor {
struct usb_config_descriptor config;
struct HidIntfDescriptor intf_0;
} FURI_PACKED;
enum HidReportId {
ReportIdKeyboard = 1,
ReportIdMouse = 2,
ReportIdConsumer = 3,
};
/* HID report descriptor: keyboard + mouse + consumer control */
static const uint8_t hid_report_desc[] = {
// clang-format off
HID_USAGE_PAGE(HID_PAGE_DESKTOP),
HID_USAGE(HID_DESKTOP_KEYBOARD),
HID_COLLECTION(HID_APPLICATION_COLLECTION),
HID_REPORT_ID(ReportIdKeyboard),
// Keyboard report
HID_USAGE_PAGE(HID_DESKTOP_KEYPAD),
HID_USAGE_MINIMUM(HID_KEYBOARD_L_CTRL),
HID_USAGE_MAXIMUM(HID_KEYBOARD_R_GUI),
HID_LOGICAL_MINIMUM(0),
HID_LOGICAL_MAXIMUM(1),
HID_REPORT_SIZE(1),
HID_REPORT_COUNT(8),
// Input - Modifier keys byte
HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
HID_REPORT_COUNT(1),
HID_REPORT_SIZE(8),
// Input - Reserved byte
HID_INPUT(HID_IOF_CONSTANT | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
HID_USAGE_PAGE(HID_PAGE_LED),
HID_REPORT_COUNT(8),
HID_REPORT_SIZE(1),
HID_USAGE_MINIMUM(1),
HID_USAGE_MAXIMUM(8),
// Output - LEDs
HID_OUTPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
HID_REPORT_COUNT(HID_KB_MAX_KEYS),
HID_REPORT_SIZE(8),
HID_LOGICAL_MINIMUM(0),
HID_LOGICAL_MAXIMUM(101),
HID_USAGE_PAGE(HID_DESKTOP_KEYPAD),
HID_USAGE_MINIMUM(0),
HID_USAGE_MAXIMUM(101),
// Input - Key codes
HID_INPUT(HID_IOF_DATA | HID_IOF_ARRAY | HID_IOF_ABSOLUTE),
HID_END_COLLECTION,
HID_USAGE_PAGE(HID_PAGE_DESKTOP),
HID_USAGE(HID_DESKTOP_MOUSE),
HID_COLLECTION(HID_APPLICATION_COLLECTION),
HID_USAGE(HID_DESKTOP_POINTER),
HID_COLLECTION(HID_PHYSICAL_COLLECTION),
HID_REPORT_ID(ReportIdMouse),
// Mouse report
HID_USAGE_PAGE(HID_PAGE_BUTTON),
HID_USAGE_MINIMUM(1),
HID_USAGE_MAXIMUM(3),
HID_LOGICAL_MINIMUM(0),
HID_LOGICAL_MAXIMUM(1),
HID_REPORT_COUNT(3),
HID_REPORT_SIZE(1),
// Input - Mouse keys
HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
HID_REPORT_SIZE(1),
HID_REPORT_COUNT(5),
// Input - Mouse keys padding
HID_INPUT(HID_IOF_CONSTANT | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
HID_USAGE_PAGE(HID_PAGE_DESKTOP),
HID_USAGE(HID_DESKTOP_X),
HID_USAGE(HID_DESKTOP_Y),
HID_USAGE(HID_DESKTOP_WHEEL),
HID_LOGICAL_MINIMUM(-127),
HID_LOGICAL_MAXIMUM(127),
HID_REPORT_SIZE(8),
HID_REPORT_COUNT(3),
// Input - Mouse movement data (x, y, scroll)
HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_RELATIVE),
HID_END_COLLECTION,
HID_END_COLLECTION,
HID_USAGE_PAGE(HID_PAGE_CONSUMER),
HID_USAGE(HID_CONSUMER_CONTROL),
HID_COLLECTION(HID_APPLICATION_COLLECTION),
HID_REPORT_ID(ReportIdConsumer),
// Consumer report
HID_LOGICAL_MINIMUM(0),
HID_RI_LOGICAL_MAXIMUM(16, 0x3FF),
HID_USAGE_MINIMUM(0),
HID_RI_USAGE_MAXIMUM(16, 0x3FF),
HID_REPORT_COUNT(HID_CONSUMER_MAX_KEYS),
HID_REPORT_SIZE(16),
// Input - Consumer control keys
HID_INPUT(HID_IOF_DATA | HID_IOF_ARRAY | HID_IOF_ABSOLUTE),
HID_END_COLLECTION,
// clang-format on
};
/* Device descriptor */
static struct usb_device_descriptor hid_device_desc = {
.bLength = sizeof(struct usb_device_descriptor),
.bDescriptorType = USB_DTYPE_DEVICE,
.bcdUSB = VERSION_BCD(2, 0, 0),
.bDeviceClass = USB_CLASS_PER_INTERFACE,
.bDeviceSubClass = USB_SUBCLASS_NONE,
.bDeviceProtocol = USB_PROTO_NONE,
.bMaxPacketSize0 = USB_EP0_SIZE,
.idVendor = HID_VID_DEFAULT,
.idProduct = HID_PID_DEFAULT,
.bcdDevice = VERSION_BCD(1, 0, 0),
.iManufacturer = 0,
.iProduct = 0,
.iSerialNumber = 0,
.bNumConfigurations = 1,
};
/* Device configuration descriptor */
static const struct HidConfigDescriptor hid_cfg_desc = {
.config =
{
.bLength = sizeof(struct usb_config_descriptor),
.bDescriptorType = USB_DTYPE_CONFIGURATION,
.wTotalLength = sizeof(struct HidConfigDescriptor),
.bNumInterfaces = 1,
.bConfigurationValue = 1,
.iConfiguration = NO_DESCRIPTOR,
.bmAttributes = USB_CFG_ATTR_RESERVED | USB_CFG_ATTR_SELFPOWERED,
.bMaxPower = USB_CFG_POWER_MA(100),
},
.intf_0 =
{
.hid =
{
.bLength = sizeof(struct usb_interface_descriptor),
.bDescriptorType = USB_DTYPE_INTERFACE,
.bInterfaceNumber = 0,
.bAlternateSetting = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_CLASS_HID,
.bInterfaceSubClass = USB_HID_SUBCLASS_BOOT,
.bInterfaceProtocol = USB_HID_PROTO_KEYBOARD,
.iInterface = NO_DESCRIPTOR,
},
.hid_desc =
{
.bLength = sizeof(struct usb_hid_descriptor),
.bDescriptorType = USB_DTYPE_HID,
.bcdHID = VERSION_BCD(1, 0, 0),
.bCountryCode = USB_HID_COUNTRY_NONE,
.bNumDescriptors = 1,
.bDescriptorType0 = USB_DTYPE_HID_REPORT,
.wDescriptorLength0 = sizeof(hid_report_desc),
},
.hid_ep_in =
{
.bLength = sizeof(struct usb_endpoint_descriptor),
.bDescriptorType = USB_DTYPE_ENDPOINT,
.bEndpointAddress = HID_EP_IN,
.bmAttributes = USB_EPTYPE_INTERRUPT,
.wMaxPacketSize = HID_EP_SZ,
.bInterval = HID_INTERVAL,
},
},
};
struct HidReportMouse {
uint8_t report_id;
uint8_t btn;
int8_t x;
int8_t y;
int8_t wheel;
} FURI_PACKED;
struct HidReportKB {
uint8_t report_id;
struct {
uint8_t mods;
uint8_t reserved;
uint8_t btn[HID_KB_MAX_KEYS];
} boot;
} FURI_PACKED;
struct HidReportConsumer {
uint8_t report_id;
uint16_t btn[HID_CONSUMER_MAX_KEYS];
} FURI_PACKED;
struct HidReportLED {
uint8_t report_id;
uint8_t led_state;
} FURI_PACKED;
static struct HidReport {
struct HidReportKB keyboard;
struct HidReportMouse mouse;
struct HidReportConsumer consumer;
} FURI_PACKED hid_report;
static void hid_init(usbd_device* dev, FuriHalUsbInterface* intf, void* ctx);
static void hid_deinit(usbd_device* dev);
static void hid_on_wakeup(usbd_device* dev);
static void hid_on_suspend(usbd_device* dev);
FuriHalUsbInterface usb_hid = {
.init = hid_init,
.deinit = hid_deinit,
.wakeup = hid_on_wakeup,
.suspend = hid_on_suspend,
.dev_descr = (struct usb_device_descriptor*)&hid_device_desc,
.str_manuf_descr = NULL,
.str_prod_descr = NULL,
.str_serial_descr = NULL,
.cfg_descr = (void*)&hid_cfg_desc,
};
static bool hid_send_report(uint8_t report_id);
static usbd_respond hid_ep_config(usbd_device* dev, uint8_t cfg);
static usbd_respond hid_control(usbd_device* dev, usbd_ctlreq* req, usbd_rqc_callback* callback);
static usbd_device* usb_dev;
static FuriSemaphore* hid_semaphore = NULL;
static bool hid_connected = false;
static HidStateCallback callback;
static void* cb_ctx;
static uint8_t led_state;
static bool boot_protocol = false;
bool furi_hal_hid_is_connected() {
return hid_connected;
}
uint8_t furi_hal_hid_get_led_state() {
return led_state;
}
void furi_hal_hid_set_state_callback(HidStateCallback cb, void* ctx) {
if(callback != NULL) {
if(hid_connected == true) callback(false, cb_ctx);
}
callback = cb;
cb_ctx = ctx;
if(callback != NULL) {
if(hid_connected == true) callback(true, cb_ctx);
}
}
bool furi_hal_hid_kb_press(uint16_t button) {
for(uint8_t key_nb = 0; key_nb < HID_KB_MAX_KEYS; key_nb++) {
if(hid_report.keyboard.boot.btn[key_nb] == 0) {
hid_report.keyboard.boot.btn[key_nb] = button & 0xFF;
break;
}
}
hid_report.keyboard.boot.mods |= (button >> 8);
return hid_send_report(ReportIdKeyboard);
}
bool furi_hal_hid_kb_release(uint16_t button) {
for(uint8_t key_nb = 0; key_nb < HID_KB_MAX_KEYS; key_nb++) {
if(hid_report.keyboard.boot.btn[key_nb] == (button & 0xFF)) {
hid_report.keyboard.boot.btn[key_nb] = 0;
break;
}
}
hid_report.keyboard.boot.mods &= ~(button >> 8);
return hid_send_report(ReportIdKeyboard);
}
bool furi_hal_hid_kb_release_all() {
for(uint8_t key_nb = 0; key_nb < HID_KB_MAX_KEYS; key_nb++) {
hid_report.keyboard.boot.btn[key_nb] = 0;
}
hid_report.keyboard.boot.mods = 0;
return hid_send_report(ReportIdKeyboard);
}
bool furi_hal_hid_mouse_move(int8_t dx, int8_t dy) {
hid_report.mouse.x = dx;
hid_report.mouse.y = dy;
bool state = hid_send_report(ReportIdMouse);
hid_report.mouse.x = 0;
hid_report.mouse.y = 0;
return state;
}
bool furi_hal_hid_mouse_press(uint8_t button) {
hid_report.mouse.btn |= button;
return hid_send_report(ReportIdMouse);
}
bool furi_hal_hid_mouse_release(uint8_t button) {
hid_report.mouse.btn &= ~button;
return hid_send_report(ReportIdMouse);
}
bool furi_hal_hid_mouse_scroll(int8_t delta) {
hid_report.mouse.wheel = delta;
bool state = hid_send_report(ReportIdMouse);
hid_report.mouse.wheel = 0;
return state;
}
bool furi_hal_hid_consumer_key_press(uint16_t button) {
for(uint8_t key_nb = 0; key_nb < HID_CONSUMER_MAX_KEYS; key_nb++) {
if(hid_report.consumer.btn[key_nb] == 0) {
hid_report.consumer.btn[key_nb] = button;
break;
}
}
return hid_send_report(ReportIdConsumer);
}
bool furi_hal_hid_consumer_key_release(uint16_t button) {
for(uint8_t key_nb = 0; key_nb < HID_CONSUMER_MAX_KEYS; key_nb++) {
if(hid_report.consumer.btn[key_nb] == button) {
hid_report.consumer.btn[key_nb] = 0;
break;
}
}
return hid_send_report(ReportIdConsumer);
}
static void* hid_set_string_descr(char* str) {
furi_assert(str);
size_t len = strlen(str);
struct usb_string_descriptor* dev_str_desc = malloc(len * 2 + 2);
dev_str_desc->bLength = len * 2 + 2;
dev_str_desc->bDescriptorType = USB_DTYPE_STRING;
for(size_t i = 0; i < len; i++) dev_str_desc->wString[i] = str[i];
return dev_str_desc;
}
static void hid_init(usbd_device* dev, FuriHalUsbInterface* intf, void* ctx) {
UNUSED(intf);
FuriHalUsbHidConfig* cfg = (FuriHalUsbHidConfig*)ctx;
if(hid_semaphore == NULL) hid_semaphore = furi_semaphore_alloc(1, 1);
usb_dev = dev;
hid_report.keyboard.report_id = ReportIdKeyboard;
hid_report.mouse.report_id = ReportIdMouse;
hid_report.consumer.report_id = ReportIdConsumer;
usb_hid.dev_descr->iManufacturer = 0;
usb_hid.dev_descr->iProduct = 0;
usb_hid.str_manuf_descr = NULL;
usb_hid.str_prod_descr = NULL;
usb_hid.dev_descr->idVendor = HID_VID_DEFAULT;
usb_hid.dev_descr->idProduct = HID_PID_DEFAULT;
if(cfg != NULL) {
usb_hid.dev_descr->idVendor = cfg->vid;
usb_hid.dev_descr->idProduct = cfg->pid;
if(cfg->manuf[0] != '\0') {
usb_hid.str_manuf_descr = hid_set_string_descr(cfg->manuf);
usb_hid.dev_descr->iManufacturer = UsbDevManuf;
}
if(cfg->product[0] != '\0') {
usb_hid.str_prod_descr = hid_set_string_descr(cfg->product);
usb_hid.dev_descr->iProduct = UsbDevProduct;
}
}
usbd_reg_config(dev, hid_ep_config);
usbd_reg_control(dev, hid_control);
usbd_connect(dev, true);
}
static void hid_deinit(usbd_device* dev) {
usbd_reg_config(dev, NULL);
usbd_reg_control(dev, NULL);
free(usb_hid.str_manuf_descr);
free(usb_hid.str_prod_descr);
}
static void hid_on_wakeup(usbd_device* dev) {
UNUSED(dev);
if(!hid_connected) {
hid_connected = true;
if(callback != NULL) {
callback(true, cb_ctx);
}
}
}
static void hid_on_suspend(usbd_device* dev) {
UNUSED(dev);
if(hid_connected) {
hid_connected = false;
furi_semaphore_release(hid_semaphore);
if(callback != NULL) {
callback(false, cb_ctx);
}
}
}
static bool hid_send_report(uint8_t report_id) {
if((hid_semaphore == NULL) || (hid_connected == false)) return false;
if((boot_protocol == true) && (report_id != ReportIdKeyboard)) return false;
FuriStatus status = furi_semaphore_acquire(hid_semaphore, HID_INTERVAL * 2);
if(status == FuriStatusErrorTimeout) {
return false;
}
furi_check(status == FuriStatusOk);
if(hid_connected == false) {
return false;
}
if(boot_protocol == true) {
usbd_ep_write(
usb_dev, HID_EP_IN, &hid_report.keyboard.boot, sizeof(hid_report.keyboard.boot));
} else {
if(report_id == ReportIdKeyboard)
usbd_ep_write(usb_dev, HID_EP_IN, &hid_report.keyboard, sizeof(hid_report.keyboard));
else if(report_id == ReportIdMouse)
usbd_ep_write(usb_dev, HID_EP_IN, &hid_report.mouse, sizeof(hid_report.mouse));
else if(report_id == ReportIdConsumer)
usbd_ep_write(usb_dev, HID_EP_IN, &hid_report.consumer, sizeof(hid_report.consumer));
}
return true;
}
static void hid_txrx_ep_callback(usbd_device* dev, uint8_t event, uint8_t ep) {
UNUSED(dev);
if(event == usbd_evt_eptx) {
furi_semaphore_release(hid_semaphore);
} else if(boot_protocol == true) {
usbd_ep_read(usb_dev, ep, &led_state, sizeof(led_state));
} else {
struct HidReportLED leds;
usbd_ep_read(usb_dev, ep, &leds, sizeof(leds));
led_state = leds.led_state;
}
}
/* Configure endpoints */
static usbd_respond hid_ep_config(usbd_device* dev, uint8_t cfg) {
switch(cfg) {
case 0:
/* deconfiguring device */
usbd_ep_deconfig(dev, HID_EP_IN);
usbd_reg_endpoint(dev, HID_EP_IN, 0);
return usbd_ack;
case 1:
/* configuring device */
usbd_ep_config(dev, HID_EP_IN, USB_EPTYPE_INTERRUPT, HID_EP_SZ);
usbd_reg_endpoint(dev, HID_EP_IN, hid_txrx_ep_callback);
usbd_ep_write(dev, HID_EP_IN, 0, 0);
boot_protocol = false; /* BIOS will SET_PROTOCOL if it wants this */
return usbd_ack;
default:
return usbd_fail;
}
}
/* Control requests handler */
static usbd_respond hid_control(usbd_device* dev, usbd_ctlreq* req, usbd_rqc_callback* callback) {
UNUSED(callback);
/* HID control requests */
if(((USB_REQ_RECIPIENT | USB_REQ_TYPE) & req->bmRequestType) ==
(USB_REQ_INTERFACE | USB_REQ_CLASS) &&
req->wIndex == 0) {
switch(req->bRequest) {
case USB_HID_SETIDLE:
return usbd_ack;
case USB_HID_GETREPORT:
if(boot_protocol == true) {
dev->status.data_ptr = &hid_report.keyboard.boot;
dev->status.data_count = sizeof(hid_report.keyboard.boot);
} else {
dev->status.data_ptr = &hid_report;
dev->status.data_count = sizeof(hid_report);
}
return usbd_ack;
case USB_HID_SETPROTOCOL:
if(req->wValue == 0)
boot_protocol = true;
else if(req->wValue == 1)
boot_protocol = false;
else
return usbd_fail;
return usbd_ack;
default:
return usbd_fail;
}
}
if(((USB_REQ_RECIPIENT | USB_REQ_TYPE) & req->bmRequestType) ==
(USB_REQ_INTERFACE | USB_REQ_STANDARD) &&
req->wIndex == 0 && req->bRequest == USB_STD_GET_DESCRIPTOR) {
switch(req->wValue >> 8) {
case USB_DTYPE_HID:
dev->status.data_ptr = (uint8_t*)&(hid_cfg_desc.intf_0.hid_desc);
dev->status.data_count = sizeof(hid_cfg_desc.intf_0.hid_desc);
return usbd_ack;
case USB_DTYPE_HID_REPORT:
boot_protocol = false; /* BIOS does not read this */
dev->status.data_ptr = (uint8_t*)hid_report_desc;
dev->status.data_count = sizeof(hid_report_desc);
return usbd_ack;
default:
return usbd_fail;
}
}
return usbd_fail;
}
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