Protocols/OSCAR/SNAC/BUCP CHALLENGE REQUEST: Difference between revisions

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{{Template:Protocols/OSCAR}}
{{Template:Protocols/OSCAR}}


This is the first SNAC sent by the client when authorizing via BUCP and is, obviously, used for requesting a challenge. The server should reply with [[Protocols/OSCAR/SNAC/BUCP__CHALLENGE_RESPONSE|BUCP__CHALLENGE_RESPONSE]] containing the aforementioned challenge, which will be [[Protocols/OSCAR/SNAC/BUCP__LOGIN_REQUEST|used for hashing the password later on]].
This is the first SNAC sent, by BUCP clients, right after the FLAP versions are exchanged. It is, obviously, used for requesting a challenge, of which the server replies with [[Protocols/OSCAR/SNAC/BUCP__CHALLENGE_RESPONSE|BUCP__CHALLENGE_RESPONSE]], with the challenge they requested.


=== SNAC Header ===
{{Template:Protocols/OSCAR/SNAC/Header
{{Template:Protocols/OSCAR/SNAC/Header
|foodgroup=00 17
|foodgroup=00 17
|subgroup=00 06
|subgroup=00 06
|flags=00 00
|flags=00 00
|request_id=00 00 00 00}}
|request_id=00 00 00 00}}


=== SNAC Data ===
{{Template:Protocols/OSCAR/SNAC/TLV
The SNAC data is a list of TLVs in this order:
|tlv_type=00 01
|tlv_type_desc=TLV Type (0x0001) - screen name
|tlv_length=xx xx
|tlv_data_type=string
|tlv_data_val=xx ..
|tlv_data_desc=Screen name}}


{| class="wikitable"
{{Template:Protocols/OSCAR/SNAC/CommonTLV}}
|-
{{Template:Protocols/OSCAR/SNAC/Footer}}
! Type !! Length !! Value
|-
| 00 01 || xx xx || The screen name as given by the client
|}


''May also contain other [[Protocols/OSCAR/TLV#Common_TLVs|common TLVs]].''
Example SNAC dump (with a FLAP header):
 
=== SNAC Dump ===
Example dump (sent by a AIM 4.8.2540 client - dump contains a FLAP header):
<pre>
<pre>
0000  2a 02 17 8a 00 18 00 17 00 06 00 00 00 00 00 00  *...............
0000  2a 02 17 8a 00 18 00 17 00 06 00 00 00 00 00 00  *...............
0010  00 01 00 0a 74 6f 78 69 64 61 74 69 6f 6e        ....toxidation
0010  00 01 00 0a 74 6f 78 69 64 61 74 69 6f 6e        ....toxidation
</pre>
</pre>

Latest revision as of 19:26, 21 July 2024

OSCAR Protocol
Introduction • Terms • Clients
Basic
TODO
Tutorials
Sign On
Foodgroups
OSERVICE (0x0001)
BUCP (0x0017)

This is the first SNAC sent, by BUCP clients, right after the FLAP versions are exchanged. It is, obviously, used for requesting a challenge, of which the server replies with BUCP__CHALLENGE_RESPONSE, with the challenge they requested.

 00 17   word   SNAC foodgroup
 00 06   word   SNAC subgroup
 00 00   word   SNAC flags
 00 00 00 00   dword   SNAC request ID
 00 01   word   TLV Type (0x0001) - screen name
 xx xx   word   TLV Length
 xx ..   string   Screen name
 May contain other common TLVs

Example SNAC dump (with a FLAP header): 

0000   2a 02 17 8a 00 18 00 17 00 06 00 00 00 00 00 00   *...............
0010   00 01 00 0a 74 6f 78 69 64 61 74 69 6f 6e         ....toxidation
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