69 lines
2.0 KiB
Bash
Executable File
69 lines
2.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Directly from http://isticktoit.net/?p=1383
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# Load libcomposite
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modprobe libcomposite
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cd /sys/kernel/config/usb_gadget/
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# Create gadget
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mkdir -p /sys/kernel/config/usb_gadget/hidraw
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cd /sys/kernel/config/usb_gadget/hidraw
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# Add basic information
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echo 0x0100 > bcdDevice # Version 1.0.0
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echo 0x0200 > bcdUSB # USB 2.0
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# For this part, used the Linux idVendor
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# Of course, no official spec for Raspberry Pi 0 acting as U2F device, so self defined product here we go
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echo 0x1d6b > idVendor # Linux Foundation
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echo 0x0400 > idProduct # Self defined U2F device
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echo 0x0000 > bDeviceClass # RAW HID?
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echo 0x0000 > bDeviceSubClass #
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echo 0x0040 > bMaxPacketSize0 # Max Packet Size
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# Create English locale
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mkdir -p strings/0x409
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# Obviously, feel free to change these however you want
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echo "Michael Kuc" > strings/0x409/manufacturer
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echo "Raspberry U2f" > strings/0x409/product
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echo "0123456789" > strings/0x409/serialnumber
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# Create HIDRAW function
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mkdir -p functions/hid.usb0
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echo 0 > functions/hid.usb0/protocol
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echo 8 > functions/hid.usb0/report_length
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echo 1 > functions/hid.usb0/subclass
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printf '\x06\xD0\xF1\x09\x01\xA1\x01\x09\x20\x15\x00\x26\xFF\x00\x75\x08\x95\x40\x81\x02\x09\x21\x15\x00\x26\xFF\x00\x75\x08\x95\x40\x91\x02\xC0' > functions/hid.usb0/report_desc
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# Create ECM function
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mkdir -p functions/ecm.usb0
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# An attempt at keeping addresses constant
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echo "DD:03:52:23:18:4C" > functions/ecm.usb0/host_addr
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echo "62:30:54:93:06:DE" > functions/ecm.usb0/dev_addr
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# Create configuration
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mkdir -p configs/c.1
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mkdir -p configs/c.1/strings/0x409
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echo 0x80 > configs/c.1/bmAttributes
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echo 200 > configs/c.1/MaxPower
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echo "HIDRAW" > configs/c.1/strings/0x409/configuration
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# Link HID function to configuration
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ln -s functions/hid.usb0 configs/c.1
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# Link g_ether function to configuration
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ln -s functions/ecm.usb0 configs/c.1
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# Sleep for 1 second
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sleep 1
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# Enable gadget
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ls /sys/class/udc > UDC
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