Fix Websocket extended length

CMakeLists.txt

@@ -1,7 +1,9 @@
 cmake_minimum_required(VERSION 3.13)
 set(PROJECT webkeyboard)
 set(PICO_SDK_PATH /home/kenji/programming/pico/c/pico-sdk)
-set(PICO_BOARD pico_w)
+if (NOT DEFINED PICO_BOARD)
+	set(PICO_BOARD pico_w)
+endif()
 include (${PICO_SDK_PATH}/external/pico_sdk_import.cmake)
 project(${PROJECT} C CXX ASM)
 
@@ -37,7 +39,8 @@ target_sources(${PROJECT} PRIVATE
 )
 
 pico_enable_stdio_usb(${PROJECT} 1)
-pico_enable_stdio_uart(${PROJECT} 1)
+
+set_target_properties(${PROJECT} PROPERTIES OUTPUT_NAME "${PROJECT}-${PICO_BOARD}")
 
 pico_add_extra_outputs(${PROJECT})
 
@@ -49,6 +52,7 @@ target_link_libraries(${PROJECT}
 	pico_stdlib
 	pico_multicore
 	pico_mbedtls
+	tinyusb_board
 	tinyusb_device
 )
 

README.md

@@ -2,11 +2,11 @@
 
 ## About
 
-This project turns a Raspberry Pi Pico W into a web-based USB HID keyboard 
-device. Users can access a webpage served over HTTP to enter keyboard input
-onto the host device of the Raspberry Pi Pico W. Input keys can be entered
-through a keyboard on the client device or by pressing on the keys on the
-graphical interface served on the webpage.
+This project turns a Raspberry Pi Pico W or Raspberry Pi Pico 2 W into a
+web-based USB HID keyboard  device. Users can access a webpage served over HTTP
+to enter keyboard input onto the host device of the Raspberry Pi Pico (2) W.
+Input keys can be entered through a keyboard on the client device or by
+pressing on the keys on the graphical interface served on the webpage.
 
 ![Web interface for Web Keyboard](web-ui.jpg)
 
@@ -14,18 +14,19 @@ graphical interface served on the webpage.
 
 [Installation and demo video](https://youtu.be/uORnxt5DLTw)
 
-Download the webkeyboard.uf2 file from the latest
+Download the appropriate firmware file for your board, either
+webkeyboard-pico_w.uf2 or webkeyboard-pico2_w.uf2, from the latest
 [release](https://git.kkozai.com/kenji/webkeyboard/releases) and flash
-onto the Raspberry Pi Pico W by holding down the BOOTSEL button while plugging
-into your computer so that it appears as a USB drive, then transfer the
-firmware file onto the Pico W. After unmounting, connect the Raspberry Pi Pico
-W with a micro USB cable to the host computer or other device.
+onto the Raspberry Pi Pico (2) W by holding down the BOOTSEL button while
+plugging into your computer so that it appears as a USB drive, then transfer the
+firmware file onto the Pico (2) W. After unmounting, connect the Raspberry Pi
+Pico (2) W with a micro USB cable to the host computer or other device.
 
-On initial boot, the Raspberry Pi Pico W will enter Access Point mode with
+On initial boot, the Raspberry Pi Pico (2) W will enter Access Point mode with
 SSID "picokb" and password "password". Connect to this network with another
 device and open a browser window to http://192.168.0.1.
 Go to the "Configure W-Fi" page and enter the SSID and password to the
-network that you would like the Raspberry Pi Pico W to connect. Optionally,
+network that you would like the Raspberry Pi Pico (2) W to connect. Optionally,
 also enter a hostname for the device and static IP information. Hit the "Save"
 button to save the network information to device flash.
 

html/index.html

@@ -332,6 +332,7 @@ function sendKeys(curKeys, is_mouse) {
 		}
 	} else if (socket.readyState == WebSocket.CLOSED) {
 		socket = new WebSocket("ws://" + window.location.hostname + ":8080/");
+		socket.onmessage = function (event) { updateLEDs(event.data); };
 		setTimeout( function () { sendKeys(curKeys, is_mouse); }, 10);
 	} else {
 		setTimeout( function () { sendKeys(curKeys, is_mouse); }, 10);

mbedtls_config.h

@@ -1,5 +1,5 @@
-#ifndef MBEDTLS_CONFIG_EXAMPLES_COMMON_H
-#define MBEDTLS_CONFIG_EXAMPLES_COMMON_H
+#ifndef MBEDTLS_CONFIG_H
+#define MBEDTLS_CONFIG_H
 
 /* Workaround for some mbedtls source files using INT_MAX without including limits.h */
 #include <limits.h>
@@ -11,6 +11,7 @@
 
 #define MBEDTLS_ALLOW_PRIVATE_ACCESS
 #define MBEDTLS_HAVE_TIME
+#define MBEDTLS_PLATFORM_MS_TIME_ALT
 
 #define MBEDTLS_CIPHER_MODE_CBC
 #define MBEDTLS_ECP_DP_SECP192R1_ENABLED

my_fsdata.c

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+	0x6c, 0x3e, 0xa, };
 
 static const unsigned char data_success_html[] = {
 	/* /success.html */

parse_keys.c

@@ -7,6 +7,8 @@
 #include "parse_keys.h"
 #include "usb_descriptors.h"
 
+static unsigned char boot_buf[8];
+
 // take a list of Javascript keys representing pressed keys and turn into
 // a 8 byte USB boot keyboard report format
 void parse_key_list(char * keys) {

parse_keys.h

@@ -3,7 +3,6 @@
 
 #define MOUSE_SPEED 10
 
-static unsigned char boot_buf[8];
 
 void parse_key_list(char * keys);
 void parse_mouse_list(char * keys);
@@ -12,7 +11,6 @@ uint8_t parse_mod(char * key);
 
 typedef struct { char * key; uint8_t val; } keycode_dict;
 
-
 // modifier key bit codes
 #define KEY_MOD_LCTRL  0x01
 #define KEY_MOD_LSHIFT 0x02

usb_descriptors.c

@@ -25,54 +25,44 @@
  */
 
 #include "tusb.h"
+#include "bsp/board_api.h"
+
 #include "usb_descriptors.h"
 
-/* A combination of interfaces must have a unique product id, since PC will save device driver after the first plug.
- * Same VID/PID with different interface e.g MSC (first), then CDC (later) will possibly cause system error on PC.
- *
- * Auto ProductID layout's Bitmap:
- *   [MSB]         HID | MSC | CDC          [LSB]
- */
-#define _PID_MAP(itf, n)  ( (CFG_TUD_##itf) << (n) )
-#define USB_PID           (0x4000 | _PID_MAP(CDC, 0) | _PID_MAP(MSC, 1) | _PID_MAP(HID, 2) | \
-                           _PID_MAP(MIDI, 3) | _PID_MAP(VENDOR, 4) )
-
-#define USB_VID   0xCafe
-#define USB_BCD   0x0200
 
 //--------------------------------------------------------------------+
 // Device Descriptors
 //--------------------------------------------------------------------+
 tusb_desc_device_t const desc_device =
 {
-  .bLength            = sizeof(tusb_desc_device_t),
-  .bDescriptorType    = TUSB_DESC_DEVICE,
-  .bcdUSB             = USB_BCD,
+	.bLength            = sizeof(tusb_desc_device_t),
+	.bDescriptorType    = TUSB_DESC_DEVICE,
+	.bcdUSB             = USB_BCD,
 
-  // Use Interface Association Descriptor (IAD) for CDC
-  // As required by USB Specs IAD's subclass must be common class (2) and protocol must be IAD (1)
-  .bDeviceClass       = TUSB_CLASS_MISC,
-  .bDeviceSubClass    = MISC_SUBCLASS_COMMON,
-  .bDeviceProtocol    = MISC_PROTOCOL_IAD,
+	// Use Interface Association Descriptor (IAD) for CDC
+	// As required by USB Specs IAD's subclass must be common class (2) and protocol must be IAD (1)
+	.bDeviceClass       = TUSB_CLASS_MISC,
+	.bDeviceSubClass    = MISC_SUBCLASS_COMMON,
+	.bDeviceProtocol    = MISC_PROTOCOL_IAD,
 
-  .bMaxPacketSize0    = CFG_TUD_ENDPOINT0_SIZE,
+	.bMaxPacketSize0    = CFG_TUD_ENDPOINT0_SIZE,
 
-  .idVendor           = USB_VID,
-  .idProduct          = USB_PID,
-  .bcdDevice          = 0x0100,
+	.idVendor           = USB_VID,
+	.idProduct          = USB_PID,
+	.bcdDevice          = 0x0100,
 
-  .iManufacturer      = 0x01,
-  .iProduct           = 0x02,
-  .iSerialNumber      = 0x03,
+	.iManufacturer      = 0x01,
+	.iProduct           = 0x02,
+	.iSerialNumber      = 0x03,
 
-  .bNumConfigurations = 0x01
+	.bNumConfigurations = 0x01
 };
 
 // Invoked when received GET DEVICE DESCRIPTOR
 // Application return pointer to descriptor
 uint8_t const * tud_descriptor_device_cb(void)
 {
-  return (uint8_t const *) &desc_device;
+	return (uint8_t const *) &desc_device;
 }
 
 
@@ -80,17 +70,10 @@ uint8_t const * tud_descriptor_device_cb(void)
 // Configuration Descriptor
 //--------------------------------------------------------------------+
 
-#define EPNUM_CDC_NOTIF	0x81
-#define EPNUM_CDC_OUT	0x02
-#define EPNUM_CDC_IN	0x82
-#define EPNUM_HID		0x83
-
-#define CONFIG_TOTAL_LEN    (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN + TUD_HID_DESC_LEN)
-
 uint8_t const desc_hid_report[] =
 {
-  TUD_HID_REPORT_DESC_KEYBOARD( HID_REPORT_ID(REPORT_ID_KEYBOARD)),
-  TUD_HID_REPORT_DESC_MOUSE( HID_REPORT_ID(REPORT_ID_MOUSE))
+	TUD_HID_REPORT_DESC_KEYBOARD( HID_REPORT_ID(REPORT_ID_KEYBOARD)),
+	TUD_HID_REPORT_DESC_MOUSE( HID_REPORT_ID(REPORT_ID_MOUSE))
 };
 
 
@@ -98,12 +81,12 @@ uint8_t const desc_hid_report[] =
 // full speed configuration
 uint8_t const desc_fs_configuration[] =
 {
-  // Config number, interface count, string index, total length, attribute, power in mA - atttribute 0xa0 enables wakeup
-  TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0xa0, 100),
+	// Config number, interface count, string index, total length, attribute, power in mA - atttribute 0xa0 enables wakeup
+	TUD_CONFIG_DESCRIPTOR(1, ITF_NUM_TOTAL, 0, CONFIG_TOTAL_LEN, 0xa0, 100),
 
-    // Interface number, string index, protocol, report descriptor len, EP In address, size & polling interval
+	// Interface number, string index, protocol, report descriptor len, EP In address, size & polling interval
 	TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 4, EPNUM_CDC_NOTIF, 8, EPNUM_CDC_OUT, EPNUM_CDC_IN, 64),
-	TUD_HID_DESCRIPTOR(ITF_NUM_HID, 5, HID_ITF_PROTOCOL_NONE, sizeof(desc_hid_report), EPNUM_HID, CFG_TUD_HID_EP_BUFSIZE, 5),
+	TUD_HID_DESCRIPTOR(ITF_NUM_HID, 5, HID_ITF_PROTOCOL_NONE, sizeof(desc_hid_report), EPNUM_HID, CFG_TUD_HID_EP_BUFSIZE, 8),
 };
 
 // Invoked when received GET CONFIGURATION DESCRIPTOR
@@ -111,8 +94,8 @@ uint8_t const desc_fs_configuration[] =
 // Descriptor contents must exist long enough for transfer to complete
 uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
 {
-  (void) index; // for multiple configurations
-  return desc_fs_configuration;
+	(void) index; // for multiple configurations
+	return desc_fs_configuration;
 }
 
 
@@ -123,55 +106,57 @@ uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
 // array of pointer to string descriptors
 char const* string_desc_arr [] =
 {
-  (const char[]) { 0x09, 0x04 }, // 0: is supported language is English (0x0409)
-  "Raspberry Pi",                // 1: Manufacturer
-  "Pico Web Keyboard",           // 2: Product
-  "1234567890123456789",         // 3: Serials, should use chip ID
-  "Pico Web Keyboard CDC",       // 4: CDC Interface
-  "Pico Web Keyboard HID",       // 5: HID Keyboard Interface
+	(const char[]) { 0x09, 0x04 },	// 0: is supported language is English (0x0409)
+	"Raspberry Pi",					// 1: Manufacturer
+	"Pico Web Keyboard",			// 2: Product
+	NULL,					        // 3: Serials, should use chip ID
+	"Pico Web Keyboard CDC",		// 4: CDC
+	"Pico Web Keyboard HID",		// 5: HID
 };
 
-static uint16_t _desc_str[32];
+static uint16_t _desc_str[32+1];
 
 // Invoked when received GET STRING DESCRIPTOR request
 // Application return pointer to descriptor, whose contents must exist long enough for transfer to complete
 uint16_t const* tud_descriptor_string_cb(uint8_t index, uint16_t langid)
 {
-  (void) langid;
+	(void) langid;
 
-  uint8_t chr_count;
+	uint8_t chr_count;
 
-  if ( index == 0)
-  {
-    memcpy(&_desc_str[1], string_desc_arr[0], 2);
-    chr_count = 1;
-  }else
-  {
-    // Note: the 0xEE index string is a Microsoft OS 1.0 Descriptors.
-    // https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/microsoft-defined-usb-descriptors
+	switch (index) {
+		case 0: // langid
+			memcpy(&_desc_str[1], string_desc_arr[0], 2);
+			chr_count = 1;
+			break;
+		case 3: // serial
+			chr_count = board_usb_get_serial(_desc_str+1, 32);	
+			break;
+		default:
+			// Note: the 0xEE index string is a Microsoft OS 1.0 Descriptors.
+			// https://docs.microsoft.com/en-us/windows-hardware/drivers/usbcon/microsoft-defined-usb-descriptors
 
-    if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) ) return NULL;
+			if ( !(index < sizeof(string_desc_arr)/sizeof(string_desc_arr[0])) ) return NULL;
 
-    const char* str = string_desc_arr[index];
+			char* str = string_desc_arr[index];
 
-    // Cap at max char
-    chr_count = (uint8_t) strlen(str);
-    if ( chr_count > 31 ) chr_count = 31;
+			// Cap at max char
+			chr_count = (uint8_t) strlen(str);
+			if ( chr_count > 31 ) chr_count = 31;
 
-    // Convert ASCII string into UTF-16
-    for(uint8_t i=0; i<chr_count; i++)
-    {
-      _desc_str[1+i] = str[i];
-    }
-  }
+			// Convert ASCII string into UTF-16
+			for(uint8_t i=0; i<chr_count; i++) {
+				_desc_str[1+i] = str[i];
+			}
+			break;
+	}
 
-  // first byte is length (including header), second byte is string type
-  _desc_str[0] = (TUSB_DESC_STRING << 8 ) | (2*chr_count + 2);
+	// first byte is length (including header), second byte is string type
+	_desc_str[0] = (TUSB_DESC_STRING << 8 ) | (2*chr_count + 2);
 
-  return _desc_str;
+	return _desc_str;
 }
 
-
 //--------------------------------------------------------------------+
 // Device HID
 //--------------------------------------------------------------------+

usb_descriptors.h

@@ -41,5 +41,15 @@ enum
 	ITF_NUM_TOTAL
 };
 
+#define USB_PID		0x0EBD
+#define USB_VID		0xCEC0
+#define USB_BCD		0x0200
+
+#define EPNUM_CDC_NOTIF	0x81
+#define EPNUM_CDC_OUT	0x02
+#define EPNUM_CDC_IN	0x82
+#define EPNUM_HID		0x83
+
+#define CONFIG_TOTAL_LEN    (TUD_CONFIG_DESC_LEN + TUD_CDC_DESC_LEN + TUD_HID_DESC_LEN)
 
 #endif /* USB_DESCRIPTORS_H_ */

websocket.c

@@ -22,6 +22,21 @@ static tWSOpenHandler ws_open_cb = NULL;
 static struct ws_state * ws_connections;
 static uint8_t ws_num_conns = 0;
 
+static struct ws_state* ws_state_alloc(void);
+static void ws_state_init(struct ws_state *wss);
+static void ws_state_free(struct ws_state *wss);
+static void ws_server_init_pcb( struct altcp_pcb *pcb, uint16_t port);
+static err_t ws_accept(void *arg, struct altcp_pcb *pcb, err_t err);
+static err_t ws_recv(void *arg, struct altcp_pcb *pcb, struct pbuf *p, err_t err);
+static err_t ws_sent(void *arg, struct altcp_pcb *pcb, uint16_t len);
+static void ws_err (void *arg, err_t err);
+static err_t ws_close_conn(struct altcp_pcb *pcb, struct ws_state *wss);
+static err_t ws_close_or_abort_conn(struct altcp_pcb *pcb, struct ws_state *wss, uint8_t abort_conn);
+static err_t ws_poll(void *arg, struct altcp_pcb *pcb);
+static err_t ws_handshake(struct altcp_pcb *pcb, struct ws_state *wss, struct pbuf *p);
+static err_t ws_read(struct altcp_pcb *pcb, struct ws_state *wss, struct pbuf *p);
+static err_t ws_send(struct ws_state *wss, uint8_t *data, uint16_t len);
+
 // allocate memory for ws_state instance
 static struct ws_state * ws_state_alloc(void) {
 	struct ws_state *ret =  WS_ALLOC_WS_STATE();
@@ -55,7 +70,7 @@ static void ws_state_free(struct ws_state *wss) {
 		} else {
 			struct ws_state * last;
 			for (last = ws_connections; last->next != NULL; last = last->next) {
-				if (last->next = wss) {
+				if (last->next == wss) {
 					last->next = wss->next;
 					break;
 				}
@@ -172,6 +187,8 @@ static err_t ws_recv(void *arg, struct altcp_pcb *pcb, struct pbuf *p, err_t err
 
 // called when data has been sent over the websocket
 static err_t ws_sent(void *arg, struct altcp_pcb *pcb, uint16_t len) {
+	(void) pcb;
+
 	struct ws_state *wss = (struct ws_state *)arg;
 
 	LWIP_DEBUGF(WS_DEBUG | LWIP_DBG_TRACE, ("ws_sent %p\n", (void*) pcb));
@@ -294,13 +311,11 @@ static err_t ws_handshake(struct altcp_pcb *pcb, struct ws_state *wss, struct pb
 
 					// create response packet with encoded response key
 					unsigned char response[sizeof(WS_RESPONSE) + sizeof(key_base64)+3];
-					//strncpy(response, WS_RESPONSE, sizeof(WS_RESPONSE));
-					//strlcpy(&response[sizeof(WS_RESPONSE)-1], key_base64, strlen(key_base64));
 					size_t count = sprintf(response, "%s%s\r\n\r\n", WS_RESPONSE, key_base64);
 
 					// send completed data packet
 					LWIP_DEBUGF(WS_DEBUG, ("ws_handshake: sending response\n"));
-					if(altcp_write(pcb, response, strlen(response), TCP_WRITE_FLAG_COPY) == ERR_OK) {
+					if(altcp_write(pcb, response, count, TCP_WRITE_FLAG_COPY) == ERR_OK) {
 						wss->active = true;
 					}
 
@@ -326,6 +341,7 @@ static err_t ws_handshake(struct altcp_pcb *pcb, struct ws_state *wss, struct pb
 
 // handle reading of websocket data and pass to ws_receive_cb
 static err_t ws_read(struct altcp_pcb *pcb, struct ws_state *wss, struct pbuf *p) {
+	(void) pcb;
 	uint8_t *data = (uint8_t *) p->payload;
 	uint16_t len = p->len;
 
@@ -338,25 +354,24 @@ static err_t ws_read(struct altcp_pcb *pcb, struct ws_state *wss, struct pbuf *p
 		uint8_t masked = data[1] & 0x80;
 		uint16_t msg_len = data[1] & 0x7F;
 		uint8_t *msg;
+		uint8_t *mask;
+
 		switch (msg_len) {
 			case 126: // next two bytes are length
-				memcpy(&msg_len, &data[2], 2);
+				msg_len = ( (uint16_t)data[2] << 8) | data[3];
 				if (len >= 8) {
 					msg = &data[8];
+					mask = &data[4];
 				}
 				break;
 			case 127: // next four bytes are length
 				// lwIP's pbuf only handles 16-bit lengths, so error
-				return ERR_ARG;
-				
-				//memcpy(&msg_len, &data[2], 4);
-				//if (len >= 10) {
-				//	msg = &data[10];
-				//}
-				//break;
+				LWIP_DEBUGF(WS_DEBUG, ("ws_read: received 64-bit length %u\n", msg_len));
+				return ERR_MEM;
 			default:
 				if (len >= 6) {
 					msg = &data[6];
+					mask = &data[2];
 				}
 				break;
 		}
@@ -370,8 +385,6 @@ static err_t ws_read(struct altcp_pcb *pcb, struct ws_state *wss, struct pbuf *p
 				if (msg && ws_receive_cb != NULL) {
 					// unmask the data if mask bit is received
 					if (masked) {
-						uint8_t *mask = &data[2];
-	
 						for (int i=0; i<msg_len; i++) {
 							msg[i] ^= mask[i % 4];
 						}
@@ -387,6 +400,11 @@ static err_t ws_read(struct altcp_pcb *pcb, struct ws_state *wss, struct pbuf *p
 						memset(buf, 0x00, sizeof(buf));
 					}
 
+					if (buf_len + msg_len > WS_BUFFER_SIZE) {
+						LWIP_DEBUGF(WS_DEBUG, ("ws_read: message exceeds buffer size %u+%u\n", buf_len, msg_len));
+						return ERR_MEM;
+					}
+
 					memcpy(&buf[buf_len], msg, msg_len);
 					buf_len += msg_len;
 					

websocket.h

@@ -7,7 +7,7 @@
 #define WS_MAX_RETRIES		10
 #define WS_POLL_INTERVAL	60 // WS_POLL_INTERVAL/2 seconds
 #define WS_MAX_CONN			4
-#define WS_BUFFER_SIZE		512
+#define WS_BUFFER_SIZE		1024
 
 #define OP_CONT		0x00
 #define OP_TEXT		0x01
@@ -28,21 +28,7 @@ struct ws_state {
 typedef void (* tWSHandler ) (uint8_t *data, uint16_t len);
 typedef void (* tWSOpenHandler ) (struct ws_state * wss);
 
-static struct ws_state* ws_state_alloc(void);
-static void ws_state_init(struct ws_state *wss);
-static void ws_state_free(struct ws_state *wss);
 void ws_server_init(void);
-static void ws_server_init_pcb( struct altcp_pcb *pcb, uint16_t port);
-static err_t ws_accept(void *arg, struct altcp_pcb *pcb, err_t err);
-static err_t ws_recv(void *arg, struct altcp_pcb *pcb, struct pbuf *p, err_t err);
-static err_t ws_sent(void *arg, struct altcp_pcb *pcb, uint16_t len);
-static void ws_err (void *arg, err_t err);
-static err_t ws_close_conn(struct altcp_pcb *pcb, struct ws_state *wss);
-static err_t ws_close_or_abort_conn(struct altcp_pcb *pcb, struct ws_state *wss, uint8_t abort_conn);
-static err_t ws_poll(void *arg, struct altcp_pcb *pcb);
-static err_t ws_handshake(struct altcp_pcb *pcb, struct ws_state *wss, struct pbuf *p);
-static err_t ws_read(struct altcp_pcb *pcb, struct ws_state *wss, struct pbuf *p);
-static err_t ws_send(struct ws_state *wss, uint8_t *data, uint16_t len);
 void ws_send_all(uint8_t *data, uint16_t len);
 void ws_set_receive_handler( tWSHandler ws_handler);
 void ws_set_open_handler( tWSOpenHandler ws_handler);