Vendor ID Field is Sign Extended

[Jacob S. Barrett]

Vendor IDs assigned in the dictionary appear to get sign extended in the 
attributes stream.  FreeRADIUS allows only at 2 byte Vendor ID in the 
dictionary, the RFC specifies 4 (first octet always 0).  When cast to a 
4 byte value the sign is being carried which causes problems on the 
client when it decodes the 4 byte value as an unsigned 4 byte integer.

Here is the raw bits of the first 6 bytes of my attribute as I change 
the Vendor ID from 32767 to 32768.

Type    | Length | Vendor ID = 0x7FFF (32767)        |
00011010|00010000|00000000|00000000|01111111|11111111|...
Type    |        | Vendor ID = 0x8000 (32768)        |
00011010|00010000|11111111|11111111|10000000|00000000|...
If FreeRADIUS is going to limit to 2 bytes then it must mask off the top 
2 bytes of the 4 byte field before sending.

BTW, does anyone know what one has to do to get a registered vendor number?

--
Jacob S. Barrett
[EMAIL PROTECTED]
www.amduat.net
"I don't suffer from insanity, I enjoy every minute of it."



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