mirror of
https://github.com/DarkFlippers/unleashed-firmware
synced 2024-11-10 15:04:19 +00:00
BadUSB: implement boot protocol (#2496)
* BadUSB: remove unused out EP * BadUSB: do not use iad for a single interface * BadUSB: implement the boot protocol * BadUSB: implement SET_PROTOCOL * Improve HID report descriptor readability * CODEOWNERS update Co-authored-by: nminaylov <nm29719@gmail.com> Co-authored-by: あく <alleteam@gmail.com>
This commit is contained in:
Sam Edwards
GitHub
parent
ce50b09b28
commit
6089e9210f
2 changed files with 136 additions and 114 deletions
3
.github/CODEOWNERS
vendored
3
.github/CODEOWNERS
vendored
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@ -44,6 +44,9 @@
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/applications/examples/example_thermo/ @skotopes @DrZlo13 @hedger @gsurkov
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# Firmware targets
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/firmware/ @skotopes @DrZlo13 @hedger @nminaylov
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# Assets
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/assets/resources/infrared/ @skotopes @DrZlo13 @hedger @gsurkov
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@ -8,7 +8,6 @@
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#include "usb_hid.h"
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#define HID_EP_IN 0x81
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#define HID_EP_OUT 0x01
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#define HID_EP_SZ 0x10
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#define HID_INTERVAL 2
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@ -16,17 +15,15 @@
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#define HID_VID_DEFAULT 0x046D
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#define HID_PID_DEFAULT 0xC529
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struct HidIadDescriptor {
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struct usb_iad_descriptor hid_iad;
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struct HidIntfDescriptor {
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struct usb_interface_descriptor hid;
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struct usb_hid_descriptor hid_desc;
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struct usb_endpoint_descriptor hid_ep_in;
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struct usb_endpoint_descriptor hid_ep_out;
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};
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struct HidConfigDescriptor {
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struct usb_config_descriptor config;
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struct HidIadDescriptor iad_0;
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struct HidIntfDescriptor intf_0;
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} __attribute__((packed));
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enum HidReportId {
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@ -35,78 +32,98 @@ enum HidReportId {
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ReportIdConsumer = 3,
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};
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/* HID report: keyboard+mouse */
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/* HID report descriptor: keyboard + mouse + consumer control */
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static const uint8_t hid_report_desc[] = {
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// clang-format off
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HID_USAGE_PAGE(HID_PAGE_DESKTOP),
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HID_USAGE(HID_DESKTOP_KEYBOARD),
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HID_COLLECTION(HID_APPLICATION_COLLECTION),
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HID_REPORT_ID(ReportIdKeyboard),
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HID_USAGE_PAGE(HID_DESKTOP_KEYPAD),
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HID_USAGE_MINIMUM(HID_KEYBOARD_L_CTRL),
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HID_USAGE_MAXIMUM(HID_KEYBOARD_R_GUI),
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HID_LOGICAL_MINIMUM(0),
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HID_LOGICAL_MAXIMUM(1),
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HID_REPORT_SIZE(1),
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HID_REPORT_COUNT(8),
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HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
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HID_REPORT_COUNT(1),
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HID_REPORT_SIZE(8),
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HID_INPUT(HID_IOF_CONSTANT | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
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HID_USAGE_PAGE(HID_PAGE_LED),
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HID_REPORT_COUNT(8),
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HID_REPORT_SIZE(1),
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HID_USAGE_MINIMUM(1),
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HID_USAGE_MAXIMUM(8),
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HID_OUTPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
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HID_REPORT_COUNT(HID_KB_MAX_KEYS),
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HID_REPORT_SIZE(8),
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HID_LOGICAL_MINIMUM(0),
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HID_LOGICAL_MAXIMUM(101),
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HID_USAGE_PAGE(HID_DESKTOP_KEYPAD),
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HID_USAGE_MINIMUM(0),
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HID_USAGE_MAXIMUM(101),
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HID_INPUT(HID_IOF_DATA | HID_IOF_ARRAY | HID_IOF_ABSOLUTE),
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HID_REPORT_ID(ReportIdKeyboard),
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// Keyboard report
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HID_USAGE_PAGE(HID_DESKTOP_KEYPAD),
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HID_USAGE_MINIMUM(HID_KEYBOARD_L_CTRL),
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HID_USAGE_MAXIMUM(HID_KEYBOARD_R_GUI),
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HID_LOGICAL_MINIMUM(0),
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HID_LOGICAL_MAXIMUM(1),
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HID_REPORT_SIZE(1),
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HID_REPORT_COUNT(8),
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// Input - Modifier keys byte
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HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
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HID_REPORT_COUNT(1),
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HID_REPORT_SIZE(8),
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// Input - Reserved byte
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HID_INPUT(HID_IOF_CONSTANT | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
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HID_USAGE_PAGE(HID_PAGE_LED),
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HID_REPORT_COUNT(8),
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HID_REPORT_SIZE(1),
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HID_USAGE_MINIMUM(1),
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HID_USAGE_MAXIMUM(8),
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// Output - LEDs
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HID_OUTPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
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HID_REPORT_COUNT(HID_KB_MAX_KEYS),
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HID_REPORT_SIZE(8),
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HID_LOGICAL_MINIMUM(0),
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HID_LOGICAL_MAXIMUM(101),
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HID_USAGE_PAGE(HID_DESKTOP_KEYPAD),
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HID_USAGE_MINIMUM(0),
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HID_USAGE_MAXIMUM(101),
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// Input - Key codes
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HID_INPUT(HID_IOF_DATA | HID_IOF_ARRAY | HID_IOF_ABSOLUTE),
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HID_END_COLLECTION,
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HID_USAGE_PAGE(HID_PAGE_DESKTOP),
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HID_USAGE(HID_DESKTOP_MOUSE),
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HID_COLLECTION(HID_APPLICATION_COLLECTION),
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HID_USAGE(HID_DESKTOP_POINTER),
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HID_COLLECTION(HID_PHYSICAL_COLLECTION),
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HID_REPORT_ID(ReportIdMouse),
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HID_USAGE_PAGE(HID_PAGE_BUTTON),
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HID_USAGE_MINIMUM(1),
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HID_USAGE_MAXIMUM(3),
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HID_LOGICAL_MINIMUM(0),
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HID_LOGICAL_MAXIMUM(1),
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HID_REPORT_COUNT(3),
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HID_REPORT_SIZE(1),
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HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
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HID_REPORT_SIZE(1),
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HID_REPORT_COUNT(5),
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HID_INPUT(HID_IOF_CONSTANT | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
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HID_USAGE_PAGE(HID_PAGE_DESKTOP),
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HID_USAGE(HID_DESKTOP_X),
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HID_USAGE(HID_DESKTOP_Y),
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HID_USAGE(HID_DESKTOP_WHEEL),
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HID_LOGICAL_MINIMUM(-127),
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HID_LOGICAL_MAXIMUM(127),
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HID_REPORT_SIZE(8),
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HID_REPORT_COUNT(3),
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HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_RELATIVE),
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HID_END_COLLECTION,
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HID_USAGE(HID_DESKTOP_POINTER),
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HID_COLLECTION(HID_PHYSICAL_COLLECTION),
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HID_REPORT_ID(ReportIdMouse),
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// Mouse report
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HID_USAGE_PAGE(HID_PAGE_BUTTON),
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HID_USAGE_MINIMUM(1),
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HID_USAGE_MAXIMUM(3),
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HID_LOGICAL_MINIMUM(0),
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HID_LOGICAL_MAXIMUM(1),
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HID_REPORT_COUNT(3),
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HID_REPORT_SIZE(1),
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// Input - Mouse keys
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HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
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HID_REPORT_SIZE(1),
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HID_REPORT_COUNT(5),
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// Input - Mouse keys padding
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HID_INPUT(HID_IOF_CONSTANT | HID_IOF_VARIABLE | HID_IOF_ABSOLUTE),
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HID_USAGE_PAGE(HID_PAGE_DESKTOP),
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HID_USAGE(HID_DESKTOP_X),
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HID_USAGE(HID_DESKTOP_Y),
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HID_USAGE(HID_DESKTOP_WHEEL),
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HID_LOGICAL_MINIMUM(-127),
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HID_LOGICAL_MAXIMUM(127),
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HID_REPORT_SIZE(8),
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HID_REPORT_COUNT(3),
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// Input - Mouse movement data (x, y, scroll)
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HID_INPUT(HID_IOF_DATA | HID_IOF_VARIABLE | HID_IOF_RELATIVE),
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HID_END_COLLECTION,
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HID_END_COLLECTION,
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HID_USAGE_PAGE(HID_PAGE_CONSUMER),
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HID_USAGE(HID_CONSUMER_CONTROL),
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HID_COLLECTION(HID_APPLICATION_COLLECTION),
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HID_REPORT_ID(ReportIdConsumer),
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HID_LOGICAL_MINIMUM(0),
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HID_RI_LOGICAL_MAXIMUM(16, 0x3FF),
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HID_USAGE_MINIMUM(0),
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HID_RI_USAGE_MAXIMUM(16, 0x3FF),
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HID_REPORT_COUNT(HID_CONSUMER_MAX_KEYS),
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HID_REPORT_SIZE(16),
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HID_INPUT(HID_IOF_DATA | HID_IOF_ARRAY | HID_IOF_ABSOLUTE),
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HID_REPORT_ID(ReportIdConsumer),
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// Consumer report
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HID_LOGICAL_MINIMUM(0),
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HID_RI_LOGICAL_MAXIMUM(16, 0x3FF),
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HID_USAGE_MINIMUM(0),
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HID_RI_USAGE_MAXIMUM(16, 0x3FF),
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HID_REPORT_COUNT(HID_CONSUMER_MAX_KEYS),
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HID_REPORT_SIZE(16),
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// Input - Consumer control keys
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HID_INPUT(HID_IOF_DATA | HID_IOF_ARRAY | HID_IOF_ABSOLUTE),
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HID_END_COLLECTION,
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// clang-format on
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};
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/* Device descriptor */
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@ -114,9 +131,9 @@ static struct usb_device_descriptor hid_device_desc = {
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.bLength = sizeof(struct usb_device_descriptor),
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.bDescriptorType = USB_DTYPE_DEVICE,
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.bcdUSB = VERSION_BCD(2, 0, 0),
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.bDeviceClass = USB_CLASS_IAD,
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.bDeviceSubClass = USB_SUBCLASS_IAD,
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.bDeviceProtocol = USB_PROTO_IAD,
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.bDeviceClass = USB_CLASS_PER_INTERFACE,
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.bDeviceSubClass = USB_SUBCLASS_NONE,
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.bDeviceProtocol = USB_PROTO_NONE,
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.bMaxPacketSize0 = USB_EP0_SIZE,
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.idVendor = HID_VID_DEFAULT,
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.idProduct = HID_PID_DEFAULT,
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@ -140,29 +157,18 @@ static const struct HidConfigDescriptor hid_cfg_desc = {
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.bmAttributes = USB_CFG_ATTR_RESERVED | USB_CFG_ATTR_SELFPOWERED,
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.bMaxPower = USB_CFG_POWER_MA(100),
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},
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.iad_0 =
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.intf_0 =
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{
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.hid_iad =
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{
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.bLength = sizeof(struct usb_iad_descriptor),
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.bDescriptorType = USB_DTYPE_INTERFASEASSOC,
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.bFirstInterface = 0,
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.bInterfaceCount = 1,
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.bFunctionClass = USB_CLASS_PER_INTERFACE,
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.bFunctionSubClass = USB_SUBCLASS_NONE,
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.bFunctionProtocol = USB_PROTO_NONE,
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.iFunction = NO_DESCRIPTOR,
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},
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.hid =
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{
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.bLength = sizeof(struct usb_interface_descriptor),
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.bDescriptorType = USB_DTYPE_INTERFACE,
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.bInterfaceNumber = 0,
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.bAlternateSetting = 0,
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.bNumEndpoints = 2,
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.bNumEndpoints = 1,
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.bInterfaceClass = USB_CLASS_HID,
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.bInterfaceSubClass = USB_HID_SUBCLASS_NONBOOT,
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.bInterfaceProtocol = USB_HID_PROTO_NONBOOT,
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.bInterfaceSubClass = USB_HID_SUBCLASS_BOOT,
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.bInterfaceProtocol = USB_HID_PROTO_KEYBOARD,
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.iInterface = NO_DESCRIPTOR,
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},
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.hid_desc =
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@ -184,15 +190,6 @@ static const struct HidConfigDescriptor hid_cfg_desc = {
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.wMaxPacketSize = HID_EP_SZ,
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.bInterval = HID_INTERVAL,
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},
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.hid_ep_out =
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{
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.bLength = sizeof(struct usb_endpoint_descriptor),
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.bDescriptorType = USB_DTYPE_ENDPOINT,
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.bEndpointAddress = HID_EP_OUT,
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.bmAttributes = USB_EPTYPE_INTERRUPT,
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.wMaxPacketSize = HID_EP_SZ,
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.bInterval = HID_INTERVAL,
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},
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},
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};
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@ -206,9 +203,11 @@ struct HidReportMouse {
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struct HidReportKB {
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uint8_t report_id;
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uint8_t mods;
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uint8_t reserved;
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uint8_t btn[HID_KB_MAX_KEYS];
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struct {
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uint8_t mods;
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uint8_t reserved;
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uint8_t btn[HID_KB_MAX_KEYS];
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} boot;
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} __attribute__((packed));
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struct HidReportConsumer {
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@ -256,6 +255,7 @@ static bool hid_connected = false;
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static HidStateCallback callback;
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static void* cb_ctx;
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static uint8_t led_state;
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static bool boot_protocol = false;
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bool furi_hal_hid_is_connected() {
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return hid_connected;
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@ -280,31 +280,31 @@ void furi_hal_hid_set_state_callback(HidStateCallback cb, void* ctx) {
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bool furi_hal_hid_kb_press(uint16_t button) {
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for(uint8_t key_nb = 0; key_nb < HID_KB_MAX_KEYS; key_nb++) {
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if(hid_report.keyboard.btn[key_nb] == 0) {
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hid_report.keyboard.btn[key_nb] = button & 0xFF;
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if(hid_report.keyboard.boot.btn[key_nb] == 0) {
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hid_report.keyboard.boot.btn[key_nb] = button & 0xFF;
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break;
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}
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}
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hid_report.keyboard.mods |= (button >> 8);
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hid_report.keyboard.boot.mods |= (button >> 8);
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return hid_send_report(ReportIdKeyboard);
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}
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bool furi_hal_hid_kb_release(uint16_t button) {
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for(uint8_t key_nb = 0; key_nb < HID_KB_MAX_KEYS; key_nb++) {
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if(hid_report.keyboard.btn[key_nb] == (button & 0xFF)) {
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hid_report.keyboard.btn[key_nb] = 0;
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if(hid_report.keyboard.boot.btn[key_nb] == (button & 0xFF)) {
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hid_report.keyboard.boot.btn[key_nb] = 0;
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break;
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}
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}
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hid_report.keyboard.mods &= ~(button >> 8);
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hid_report.keyboard.boot.mods &= ~(button >> 8);
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return hid_send_report(ReportIdKeyboard);
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}
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bool furi_hal_hid_kb_release_all() {
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for(uint8_t key_nb = 0; key_nb < HID_KB_MAX_KEYS; key_nb++) {
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hid_report.keyboard.btn[key_nb] = 0;
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hid_report.keyboard.boot.btn[key_nb] = 0;
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}
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hid_report.keyboard.mods = 0;
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hid_report.keyboard.boot.mods = 0;
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return hid_send_report(ReportIdKeyboard);
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}
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@ -434,27 +434,35 @@ static void hid_on_suspend(usbd_device* dev) {
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static bool hid_send_report(uint8_t report_id) {
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if((hid_semaphore == NULL) || (hid_connected == false)) return false;
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if((boot_protocol == true) && (report_id != ReportIdKeyboard)) return false;
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furi_check(furi_semaphore_acquire(hid_semaphore, FuriWaitForever) == FuriStatusOk);
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if(hid_connected == true) {
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if(hid_connected == false) {
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return false;
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}
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if(boot_protocol == true) {
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usbd_ep_write(
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usb_dev, HID_EP_IN, &hid_report.keyboard.boot, sizeof(hid_report.keyboard.boot));
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} else {
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if(report_id == ReportIdKeyboard)
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usbd_ep_write(usb_dev, HID_EP_IN, &hid_report.keyboard, sizeof(hid_report.keyboard));
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else if(report_id == ReportIdMouse)
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usbd_ep_write(usb_dev, HID_EP_IN, &hid_report.mouse, sizeof(hid_report.mouse));
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else if(report_id == ReportIdConsumer)
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usbd_ep_write(usb_dev, HID_EP_IN, &hid_report.consumer, sizeof(hid_report.consumer));
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return true;
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}
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return false;
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return true;
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}
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static void hid_txrx_ep_callback(usbd_device* dev, uint8_t event, uint8_t ep) {
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UNUSED(dev);
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if(event == usbd_evt_eptx) {
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furi_semaphore_release(hid_semaphore);
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} else if(boot_protocol == true) {
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usbd_ep_read(usb_dev, ep, &led_state, sizeof(led_state));
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} else {
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struct HidReportLED leds;
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usbd_ep_read(usb_dev, ep, &leds, 2);
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usbd_ep_read(usb_dev, ep, &leds, sizeof(leds));
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led_state = leds.led_state;
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}
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}
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@ -464,18 +472,15 @@ static usbd_respond hid_ep_config(usbd_device* dev, uint8_t cfg) {
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switch(cfg) {
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case 0:
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/* deconfiguring device */
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usbd_ep_deconfig(dev, HID_EP_OUT);
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usbd_ep_deconfig(dev, HID_EP_IN);
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usbd_reg_endpoint(dev, HID_EP_OUT, 0);
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usbd_reg_endpoint(dev, HID_EP_IN, 0);
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return usbd_ack;
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case 1:
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/* configuring device */
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usbd_ep_config(dev, HID_EP_IN, USB_EPTYPE_INTERRUPT, HID_EP_SZ);
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usbd_ep_config(dev, HID_EP_OUT, USB_EPTYPE_INTERRUPT, HID_EP_SZ);
|
||||
usbd_reg_endpoint(dev, HID_EP_IN, hid_txrx_ep_callback);
|
||||
usbd_reg_endpoint(dev, HID_EP_OUT, 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;
|
||||
|
|
@ -493,8 +498,21 @@ static usbd_respond hid_control(usbd_device* dev, usbd_ctlreq* req, usbd_rqc_cal
|
|||
case USB_HID_SETIDLE:
|
||||
return usbd_ack;
|
||||
case USB_HID_GETREPORT:
|
||||
dev->status.data_ptr = &hid_report;
|
||||
dev->status.data_count = sizeof(hid_report);
|
||||
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;
|
||||
|
|
@ -505,10 +523,11 @@ static usbd_respond hid_control(usbd_device* dev, usbd_ctlreq* req, usbd_rqc_cal
|
|||
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.iad_0.hid_desc);
|
||||
dev->status.data_count = sizeof(hid_cfg_desc.iad_0.hid_desc);
|
||||
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;
|
||||
|
|
|
|||
Loading…
Reference in a new issue