Protocols/OSCAR/SNAC/ICBM CHANNEL MSG TO CLIENT

OSCAR Protocol

Introduction • Terms • Clients

Basic

Datatypes • FLAP • SNAC • TLV

UUIDs • Errors • Tool IDs

Host Interaction

Rate Limits • Migration • Messages

Other Services

ADMIN • ADVERT • ALERT

BART • BOS • BUCP • CHAT

CHAT_NAV

Tutorials

Sign On • BART • Rendezvous

ICBM • Locate • Buddies

Foodgroups

OSERVICE (0x0001)

LOCATE (0x0002)

BUDDY (0x0003)

ICBM (0x0004)

ADVERT (0x0005)

INVITE (0x0006)

ADMIN (0x0007)

POPUP (0x0008)

PD (0x0009)

USER_LOOKUP (0x000A)

STATS (0x000B)

TRANSLATE (0x000C)

CHAT_NAV (0x000D)

CHAT (0x000E)

ODIR (0x000F)

BART (0x0010)

FEEDBAG (0x0013)

ICQ (0x0015)

BUCP (0x0017)

ALERT (0x0018)

PLUGIN (0x0022)

UNNAMED_FG_24 (0x0024)

MDIR (0x0025)

ARS (0x044A)

ID	Origin	Name	Foodgroup	Service	Status	Version
0x0004, 0x0007	Host	ICBM__CHANNEL_MSG_TOCLIENT	Unspecified	BOS	Active	1.25

This is the ICBM__CHANNEL_MSG_TOHOST after it has been reformatted by the host and sent to the destination client.

SNAC Header

Foodgroup	uint16 (word)	00 04
Subgroup	uint16 (word)	00 07
Flags	uint16 (word)	00 00
Request ID	uint32 (dword)	00 00 00 00

SNAC Data

Name	Type	Notes
cookie	ICBM Cookie	Opaque data generated by conversation initiator and used to link up the conversation and errors
channel	uint16 (word)	[Class: ICBM__CHANNELS] Channel the message is on
info	OSERVICE__USERINFO	Information about the sender of the message
icbmTlvs	TLV	[Class: ICBM__TAGS] Actual message

From Aleksandr Shutko: SNAC(04,07) message for client from server

SNAC(04,07)  ICBM__CHANNEL_MSG_TOCLIENT

You'll receive this snac when another client send you a message thru server. Within the ICBM (Inter-Client Basic Message) types, a channel is defined. Each channel represents a different kind of message. Channel 1 is used for simple plain text messages. Channel 2 is used for complex messages (rtf, utf8) and negotiating "rendezvous". These transactions end in something more complex happening, such as a chat invitation, or a file transfer. Channel 4 is used for various ICQ messages. Examples are normal messages, URLs, and old-style authorization. This snac contain one fixed part (sender uin, channel, msg-id cookie, sender info) and channel-dependend tlv-chain with message data. 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) - online time  00 04   word   TLV.Length  xx xx xx xx   dword   client online time  00 03   word   TLV.Type(0x03) - account creation time  00 04   word   TLV.Length  xx xx xx xx   dword   user account creation time  xx xx   word   TLV.Type(0xXX) - icbm data  xx xx   word   TLV.Length  ....   ....   ....   ....  .... ....  xx xx   word   TLV.Type(0xXX) - icbm data  xx xx   word   TLV.Length  ....   ....   ....

Channel 1    Channel 1 message format (plain-text messages)  Channel 2    Channel 2 message format (rtf messages, rendezvous)  Channel 4    Channel 4 message format (typed old-style messages)

Examples

From Aleksandr Shutko: SNAC(04,07)/CH1 channel1 message from server for client

SNAC(04,07)/CH1  ICBM__CHANNEL_MSG_TOCLIENT/CH1

This is the message from server that was sent by another client. It contain two parts: fixed part (sender uin, msg-id cookie, channel, sender info) and message data part. 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  00 01   word   message channel  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 04   word   TLV.Type(0x04) - automated response flag  00 00   word   TLV.Length  empty (this TLV appears in automated responses like away messages)  00 02   word   TLV.Type(0x02) - message data  xx xx   word   TLV.Length  05   byte   fragment identifier (array of required capabilities)  01   byte   fragment version  xx xx   word   TLV.Length  xx ..   array   byte array of required capabilities (1 - text)  01   byte   fragment identifier (message text)  01   byte   fragment version  xx xx   word   TLV.Length  00 00   word   Message charset number  ff ff   word   Message charset subset  xx ..   string (ascii)   Message text string

Example SNAC dumps with flap header:

2a 02 ae e3 00 66 00 04 00 07 00 00 9a b3 8d eb *....f.......... 3e bc 91 9e 4a ba ef c9 00 01 07 31 30 30 30 30 >...J......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 04 66 00 03 00 04 ...........f.... 00 00 00 00 00 02 00 24 05 01 00 01 00 01 01 00 .......$........ 1b 00 00 00 00 74 65 73 74 20 70 6c 61 69 6e 2d .....test plain- 74 65 78 74 20 6d 65 73 73 61 67 65 text message

From Aleksandr Shutko: SNAC(04,07)/CH2 channel 2 message from server for client

SNAC(04,07)/CH2  ICBM__CHANNEL_MSG_TOCLIENT/CH2

This is the message from server that was sent by another client. It contain two parts: fixed part (sender uin, msg-id cookie, channel, sender info) and message data part. 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  00 02   word   message channel  xx   byte   screenname string length  xx ..   string   screenname string  xx xx   word   sender warning level  xx xx   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) - online time  00 04   word   TLV.Length  xx xx xx xx   dword   client online 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) - rendezvous message data  xx xx   word   TLV.Length  xx xx   word   message type (0 - request, 1 - cancel, 2 - accept)  xx xx xx xx  xx xx xx xx   qword   msg-id cookie (same as above)  xx .. xx   guid   capability (determines format of message data in "extention data" below)  00 04   word   TLV.Type(0x04) - external ip  xx xx   word   TLV.Length  xx xx xx xx   dword   external ip  00 05   word   TLV.Type(0x05) - listening port  xx xx   word   TLV.Length  xx xx   word   listening port  00 0A   word   TLV.Type(0x0A) - unknown  xx xx   word   TLV.Length  xx xx   word   unknown (usually 1)  00 0B   word   TLV.Type(0x0B) - unknown  xx xx   word   TLV.Length  xx xx   word   unknown  00 0F   word   TLV.Type(0x0F) - unknown  00 00   word   TLV.Length  empty  27 11   word   TLV.Type(0x2711) - extention data  xx xx   word   TLV.Length Following contents is capability-specific. Data format description for capability {09461349-4C7F-11D1-8222-444553540000}  xx xx   word (LE)   length of following data  xx xx   word (LE)   protocol version  xx .. xx   guid (LE)   plugin or zero bytes  xx xx   word   unknown  xx xx xx xx   dword (LE)   client capabilities flags  xx   byte   unknown  xx xx   word (LE)   seems to be a downcounter  xx xx   word (LE)   length of following data  xx xx   word (LE)   seems to be a downcounter as in first chunk above  xx ..     unknown, usually zeros if plugin field in first chunk above is zero, here is message, overwise here is plugin-specific data.

Example SNAC dumps with flap header:

2A 02 08 2C 01 9D 00 04 00 07 00 00 90 2F 30 11 *..,.???......???/0. 70 95 A0 00 26 1F 00 00 00 02 07 31 32 33 34 35 p??????.&......12345 36 37 00 00 00 04 00 01 00 02 00 50 00 06 00 04 67.........P.... 20 12 00 00 00 0F 00 04 00 00 06 F3 00 03 00 04 ..........???.... 40 5A 93 78 00 05 01 5B 00 00 70 95 A0 00 26 1F @Z???x...[..p??????.&. 00 00 09 46 13 49 4C 7F 11 D1 82 22 44 45 53 54 ...F.IL?.T???"DEST 00 00 00 0A 00 02 00 01 00 0F 00 00 27 11 01 33 ............'..3 1B 00 08 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 03 00 00 00 00 E3 FF 0E 00 E3 ...........???..??? FF 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00  ???............... 00 21 00 CC 00 7B 5C 72 74 66 31 5C 61 6E 73 69 .!.???.{\rtf1\ansi 5C 61 6E 73 69 63 70 67 31 32 35 31 5C 64 65 66 \ansicpg1251\def 66 30 5C 64 65 66 6C 61 6E 67 31 30 34 39 7B 5C f0\deflang1049{\ 66 6F 6E 74 74 62 6C 7B 5C 66 30 5C 66 6E 69 6C fonttbl{\f0\fnil 5C 66 63 68 61 72 73 65 74 32 30 34 7B 5C 2A 5C \fcharset204{\*\ 66 6E 61 6D 65 20 4D 53 20 53 61 6E 73 20 53 65 fname MS Sans Se 72 69 66 3B 7D 4D 53 20 53 68 65 6C 6C 20 44 6C rif;}MS Shell Dl 67 3B 7D 7D 0D 0A 7B 5C 63 6F 6C 6F 72 74 62 6C g;}}..{\colortbl 20 3B 5C 72 65 64 30 5C 67 72 65 65 6E 30 5C 62  ;\red0\green0\b 6C 75 65 30 3B 7D 0D 0A 5C 76 69 65 77 6B 69 6E lue0;}..\viewkin 64 34 5C 75 63 31 5C 70 61 72 64 5C 63 66 31 5C d4\uc1\pard\cf1\ 66 30 5C 66 73 32 30 3C 23 23 69 63 71 69 6D 61 f0\fs20<##icqima 67 65 30 30 30 38 3E 5C 70 61 72 0D 0A 7D 0D 0A ge0008>\par..}.. 00 00 00 00 00 FF FF FF 00 26 00 00 00 7B 39 37 .....?????????.&...{97 42 31 32 37 35 31 2D 32 34 33 43 2D 34 33 33 34 B12751-243C-4334 2D 41 44 32 32 2D 44 36 41 42 46 37 33 46 31 34 -AD22-D6ABF73F14 39 32 7D 92}

From Aleksandr Shutko: SNAC(04,07) message for client from server

SNAC(04,07)  ICBM__CHANNEL_MSG_TOCLIENT/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.

ICBM SNACs

SNAC List Expand

Subgroup Origin Name 0x0001 Any ICBM__ERR This is the error SNAC for the ICBM foodgroup. 0x0002 Client ICBM__ADD_PARAMETERS This SNAC is typically sent prior to sending the OSERVICE__CLIENT_ONLINE so that the host is properly initialized with the clients' preferences. 0x0003 Client ICBM__DEL_PARAMETERS These are the delete all parameters for a given channel. 0x0004 Client ICBM__PARAMETER_QUERY This SNAC requests ICBM parameters from the host. 0x0005 Host ICBM__PARAMETER_REPLY This SNAC is sent by the host in response to a ICBM__PARAMETER_QUERY. 0x0006 Client ICBM__CHANNEL_MSG_TOHOST This is the basic inter-client message after which the group was named (Inter-Client Basic Messages). 0x0007 Host ICBM__CHANNEL_MSG_TOCLIENT This is the ICBM__CHANNEL_MSG_TOHOST after it has been reformatted by the host and sent to the destination client. 0x0008 Client ICBM__EVIL_REQUEST This requests that the specified user is sent an EVIL notification. 0x0009 Host ICBM__EVIL_REPLY The reply tells the requester, the sender of an ICBM__EVIL_REQUEST SNAC, how much EVIL, if any, was applied to the recipient. 0x000A Host ICBM__MISSED_CALLS When the host is unable to send one or more messages to the client, the host sends this SNAC to the client to let it know that it missed some messages ("calls"). 0x000B Any ICBM__CLIENT_ERR This error notice is one of the few SNACs that can be sent to the host and received by a client. 0x000C Host ICBM__HOST_ACK This SNAC is sent by the host upon receipt of any ICBM__CHANNEL_MSG_TOHOST which includes the optional ICBM__TLV_TAGS_REQUEST_HOST_ACK TLV. 0x000D NCD ICBM__SIN_STORED This is not currently documented. Want to contribute? 0x000E NCD ICBM__SIN_LIST_QUERY This is not currently documented. Want to contribute? 0x000F NCD ICBM__SIN_LIST_REPLY This is not currently documented. Want to contribute? 0x0010 Client ICBM__SIN_RETRIEVE This requests ICBM__CHANNEL_MSG_TOCLIENT messages be generated for each of the stored ICBMs. Any message retrieved is deleted. 0x0011 NCD ICBM__SIN_DELETE This is not currently documented. Want to contribute? 0x0012 NCD ICBM__NOTIFY_REQUEST This is not currently documented. Want to contribute? 0x0013 NCD ICBM__NOTIFY_REPLY This is not currently documented. Want to contribute? 0x0014 Any ICBM__CLIENT_EVENT This SNAC is sent as a control message, sent by a client to inform the recipient of an event, or by the host informing of an event. 0x0017 Host ICBM__SIN_REPLY The host successfully processed the request to retrieve all the offline messages.