pass example (was: Re: very simple exec usage)

On Sun, 29 Apr 2007, Dave Shield wrote:

> On 29/04/07, Charles Sprickman <[email protected]> wrote:
>>                  I'm wondering if anyone has a nice, simple
>> example of implementing "pass" that I could stare at, hack up and
>> hopefully learn something.
>
> See the script 'passtest' (in the 'local' directory of the source tree).
>
> It's a bit too simplistic, and doesn't handle unusual GETNEXT
> requests robustly.  (And there's a deplorably lack of comments!)
> But it does illustrate the basic technique for implementing
> several MIB object (of different types) within a single script.

Great, thanks for pointing that out.  And if anyone else has some 
real-world examples, I'd still love to see them.

Let me make sure I'm following this correctly:

PLACE=".1.3.6.1.4.1.2021.255" # sets the base OID

[snip]

# by this point we just match the OID passed in ARGV to a string in our
# own OID - ie: a request for .1.3.6.1.4.1.2021.255.1 will return the
# answer to the meaning of life, a request for .1.3.6.1.4.1.2021.255.4
# will return "127.0.0.1", etc.

case "$RET" in
   $PLACE.1) echo "string"; echo "life the universe and everything"; exit 0 
;;
   $PLACE.2.1) echo "integer"; echo "42"; exit 0 ;;
   $PLACE.2.2) echo "objectid"; echo ".1.3.6.1.4.42.42.42"; exit 0 ;;
   $PLACE.3) echo "timeticks"; echo "363136200"; exit 0 ;;
   $PLACE.4) echo "ipaddress"; echo "127.0.0.1" ;;
   $PLACE.5) echo "counter"; echo "42"; exit 0 ;;
   $PLACE.6) echo "gauge"; echo "42"; exit 0 ;;
   *) echo "string"; echo "ack... $RET $REQ"; exit 0 ;;
esac

I'm I kind of correct?  I really don't get what the "-n" option would do, 
but the piece I quoted above seems to make sense.

Thanks,

Charles

> You'd have to do a bit more analysis of the incoming OID
> to handle a table, but the basic ideas are the same.
>
> Dave
>

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