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Fix unintended control transfers in webserial example.

This commit is contained in:
Ivo Popov 2021-02-10 01:05:37 -05:00
parent a96ee8f1d8
commit ce7fb36337
1 changed files with 34 additions and 39 deletions
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29
examples/device/webusb_serial/src/main.c
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@ -151,52 +151,47 @@ bool tud_vendor_control_xfer_cb(uint8_t rhport, uint8_t stage, tusb_control_requ
// nothing to with DATA & ACK stage // nothing to with DATA & ACK stage
if (stage != CONTROL_STAGE_SETUP ) return true; if (stage != CONTROL_STAGE_SETUP ) return true;
switch (request->bRequest) if (request->bmRequestType_bit.type == TUSB_REQ_TYPE_VENDOR) {
{ switch (request->bRequest) {
case VENDOR_REQUEST_WEBUSB: case VENDOR_REQUEST_WEBUSB:
// match vendor request in BOS descriptor // match vendor request in BOS descriptor
// Get landing page url // Get landing page url
return tud_control_xfer(rhport, request, (void*) &desc_url, desc_url.bLength); return tud_control_xfer(rhport, request, (void*) &desc_url, desc_url.bLength);
case VENDOR_REQUEST_MICROSOFT: case VENDOR_REQUEST_MICROSOFT:
if ( request->wIndex == 7 ) if ( request->wIndex == 7 ) {
{
// Get Microsoft OS 2.0 compatible descriptor // Get Microsoft OS 2.0 compatible descriptor
uint16_t total_len; uint16_t total_len;
memcpy(&total_len, desc_ms_os_20+8, 2); memcpy(&total_len, desc_ms_os_20+8, 2);
return tud_control_xfer(rhport, request, (void*) desc_ms_os_20, total_len); return tud_control_xfer(rhport, request, (void*) desc_ms_os_20, total_len);
}else } else {
{
return false; return false;
} }
}
case 0x22: } else if (
request->bmRequestType_bit.type == TUSB_REQ_TYPE_CLASS &&
request->bRequest == 0x22) {
// Webserial simulate the CDC_REQUEST_SET_CONTROL_LINE_STATE (0x22) to // Webserial simulate the CDC_REQUEST_SET_CONTROL_LINE_STATE (0x22) to
// connect and disconnect. // connect and disconnect.
web_serial_connected = (request->wValue != 0); web_serial_connected = (request->wValue != 0);
// Always lit LED if connected // Always lit LED if connected
if ( web_serial_connected ) if ( web_serial_connected ) {
{
board_led_write(true); board_led_write(true);
blink_interval_ms = BLINK_ALWAYS_ON; blink_interval_ms = BLINK_ALWAYS_ON;
tud_vendor_write_str("\r\nTinyUSB WebUSB device example\r\n"); tud_vendor_write_str("\r\nTinyUSB WebUSB device example\r\n");
}else } else {
{
blink_interval_ms = BLINK_MOUNTED; blink_interval_ms = BLINK_MOUNTED;
} }
// response with status OK // response with status OK
return tud_control_status(rhport, request); return tud_control_status(rhport, request);
default:
// stall unknown request
return false;
} }
return true; // stall unknown request
return false;
} }
void webserial_task(void) void webserial_task(void)