SNAC(04,07) message for client from server

SNAC(04,07)

SRV_CLIENT_ICBM_CH4

You'll receive this snac when another client send you a message on channel 4 thru server. ICQ clients use this snac to send messages to an old/offline/invisible clients if message type != 1 or message flags != 0 (for example plain-text multi-recipient message to an offline client) but this doesn't mean that you will never receive usual channel 4 plain-text message. See also additional information about online userinfo block.

00 04	word	SNAC family
00 07	word	SNAC subtype
00 00	word	SNAC flags
xx xx xx xx	dword	SNAC request-id

xx xx xx xx xx xx xx xx	qword	msg-id cookie
xx xx	word	message channel (see table below)
xx	byte	screenname string length
xx ..	string	screenname string
xx xx	word	sender warning level
00 04	word	number of TLVs in fixed part

00 01		word		TLV.Type(0x01) - user class
00 02		word		TLV.Length

xx xx

word

user class

00 06		word		TLV.Type(0x06) - user status
00 04		word		TLV.Length

xx xx xx xx

dword

user status

00 0f		word		TLV.Type(0x0f) - user idle time
00 04		word		TLV.Length

xx xx xx xx

dword

client idle time

00 03		word		TLV.Type(0x03) - account creation time
00 04		word		TLV.Length

xx xx xx xx

dword

user account creation time

00 05		word		TLV.Type(0x05) - message data
xx xx		word		TLV.Length

xx xx xx xx	dword (LE)	Sender uin
xx	byte	Message type
xx	byte	Message flags
xx xx	word (LE)	Message string length
xx .. 00	string (asciiz)	Message string

Example SNAC dumps with flap header:


  2a 02 ae e2 00 6a 00 04  00 07 00 00 9a b3 8d eb  *....j..........
  3e bc 8e 0a 59 65 b9 56  00 04 07 31 30 30 30 30  >...Ye.V...10000
  30 30 00 00 00 04 00 01  00 02 00 50 00 06 00 04  00.........P....
  00 01 00 00 00 0f 00 04  00 00 00 d2 00 03 00 04  ................
  00 00 00 00 00 05 00 28  40 42 0f 00 04 00 20 00  .......(@B.... .
  55 72 6c 20 64 65 73 63  72 69 70 74 69 6f 6e fe  Url description.
  68 74 74 70 3a 2f 2f 74  65 73 74 2e 75 72 6c 00  http://test.url.