Re: dlr_mysql_add and internal charset

Peter Christensen wrote:
> 
> The operator which require this behavior is Cellebrum, if I remember 
> correct, but NowSMS expect this behavior by default (but users can 
> disable it). What it does is really transmitting the text in raw binary 
> form when UDH is present.
> 
> Consider the UDH
> 
> 06 00 03 56 02 02 (UDHL=6, last part of a concatenated SMS with ref. 0x56)
> 
> and message body:
> 
> "Test msg" (54 65 73 74 20 6D 73 67)
> 
> In binary form, split into septets, the body will look like:
> 
> 06 00 0C 30 25 40 00 (this is the UDH) 54 65 73 74 20 6D 73 67
> 
> If we pack this into octets, we get:
> 
> 06 00 03 56 02 02 A8 E5 39 1D D4 9E 9F 01
> 
> which will then be transmitted to the operator. The operator is now 
> forced to guess the actual length in septets based on the length in 
> octets, and in this particular example, the operator will assume 9 
> septets instead of the correct 8 (14*8/7 = 16 - 7 (udh) = 9).
> 
> The mobile will decode the message as:
> 
> "Test msg@" 54 65 73 74 20 6D 73 67 00)
> 
> So to avoid this (unless actually intentional), the message is padded 
> with a space in case the total length of UDH + binary encoded message is 
> unfortunate. So the patch would transmit
> 
> 06 00 03 56 02 02 A8 E5 39 1D D4 9E 9F 61
> 
> which is decoded into
> 
> "Test msg " (54 65 73 74 20 6D 73 67 20)
> 
> I very much hope that gateways of this sort is very rare, but I posted 
> the patch anyway. My vote for CVS commit is very much -1 (even though 
> the feature is selectable through configuration)

Hmmm, I'm +0 (due to the fact it is selectable and there is no default behaviour 
change).

@Alex, Aarno??? Anyone else please... Opinions? Votes?

Stipe

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