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Read report lengths from descriptor on Windows #182

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merged 2 commits into from
May 14, 2020

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fmeum
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@fmeum fmeum commented May 13, 2020

Extracts input and output report lengths from the report descriptor
using HidP_GetCaps.

Since the previous implementation rejected all devices with report
lengths other than 64 bytes (+ report ID), we can reject devices with
invalid report lengths without affecting backward compatibility.

This has been tested lightly tested with both a 64 byte and a 62 byte FIDO device, further testing will be done after #181 has been resolved.

@fmeum fmeum force-pushed the fhenneke_rpt_size_win branch 2 times, most recently from 6b9d1df to 8d67b36 Compare May 14, 2020 10:40
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fmeum commented May 14, 2020

I have now tested this successfully. Testing showed that previously debug warnings would be emitted for non-FIDO devices, which has now been fixed.

src/hid_win.c Outdated Show resolved Hide resolved
Extracts input and output report lengths from the report descriptor
using HidP_GetCaps.

Since the previous implementation rejected all devices with report
lengths other than 64 bytes (+ report ID), we can reject devices with
invalid report lengths without affecting backward compatibility.
@fmeum fmeum force-pushed the fhenneke_rpt_size_win branch from 8d67b36 to 9615aba Compare May 14, 2020 12:58
@martelletto
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Thanks! Merging.

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2 participants