/* * Copyright (c) 2016, Devan Lai * * Permission to use, copy, modify, and/or distribute this software * for any purpose with or without fee is hereby granted, provided * that the above copyright notice and this permission notice * appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL * WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED * WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE * AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <string.h> #include "random_delays.h" #include "usb21_standard.h" #include "util.h" #include "webusb.h" const struct webusb_platform_descriptor webusb_platform_capability_descriptor_landing = { .bLength = WEBUSB_PLATFORM_DESCRIPTOR_SIZE, .bDescriptorType = USB_DT_DEVICE_CAPABILITY, .bDevCapabilityType = USB_DC_PLATFORM, .bReserved = 0, .platformCapabilityUUID = WEBUSB_UUID, .bcdVersion = 0x0100, .bVendorCode = WEBUSB_VENDOR_CODE, .iLandingPage = 1}; const struct webusb_platform_descriptor webusb_platform_capability_descriptor_no_landing = { .bLength = WEBUSB_PLATFORM_DESCRIPTOR_SIZE, .bDescriptorType = USB_DT_DEVICE_CAPABILITY, .bDevCapabilityType = USB_DC_PLATFORM, .bReserved = 0, .platformCapabilityUUID = WEBUSB_UUID, .bcdVersion = 0x0100, .bVendorCode = WEBUSB_VENDOR_CODE, .iLandingPage = 0}; static const char* webusb_https_url; static enum usbd_request_return_codes webusb_control_vendor_request( usbd_device* usbd_dev, struct usb_setup_data* req, uint8_t** buf, uint16_t* len, usbd_control_complete_callback* complete) { (void)complete; (void)usbd_dev; wait_random(); if (req->bRequest != WEBUSB_VENDOR_CODE) { return USBD_REQ_NEXT_CALLBACK; } int status = USBD_REQ_NOTSUPP; switch (req->wIndex) { case WEBUSB_REQ_GET_URL: { struct webusb_url_descriptor* url = (struct webusb_url_descriptor*)(*buf); uint16_t index = req->wValue; if (index == 0) { return USBD_REQ_NOTSUPP; } if (index == 1) { size_t url_len = strlen(webusb_https_url); url->bLength = WEBUSB_DT_URL_DESCRIPTOR_SIZE + url_len; url->bDescriptorType = WEBUSB_DT_URL; url->bScheme = WEBUSB_URL_SCHEME_HTTPS; memcpy(&url->URL, webusb_https_url, url_len); *len = MIN_8bits(*len, url->bLength); status = USBD_REQ_HANDLED; } else { // TODO: stall instead? status = USBD_REQ_NOTSUPP; } break; } default: { status = USBD_REQ_NOTSUPP; break; } } return status; } static void webusb_set_config(usbd_device* usbd_dev, uint16_t wValue) { (void)wValue; usbd_register_control_callback(usbd_dev, USB_REQ_TYPE_VENDOR | USB_REQ_TYPE_DEVICE, USB_REQ_TYPE_TYPE | USB_REQ_TYPE_RECIPIENT, webusb_control_vendor_request); } void webusb_setup(usbd_device* usbd_dev, const char* https_url) { webusb_https_url = https_url; usbd_register_set_config_callback(usbd_dev, webusb_set_config); }