Protocols/OSCAR/SNAC/FEEDBAG QUERY IF MODIFIED

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
0x0013, 0x0005	Client	FEEDBAG__QUERY_IF_MODIFIED	Unspecified	BOS	Active	4.0

Similar to FEEDBAG__QUERY except contains a Unix epoch to check against in order to only send if modified.

SNAC Header

Foodgroup	uint16 (word)	00 13
Subgroup	uint16 (word)	00 05
Flags	uint16 (word)	00 00
Request ID	uint32 (dword)	00 00 00 00

SNAC Data

Unconfirmed: This SNAC contains no data

Length	Description
4 bytes	Unix timestamp of locally cached server-stored information (or 0 if no local copy)
2 bytes	Number of items in locally cached server-stored information (or 0 if no local copy)

From Aleksandr Shutko: SNAC(13,05) server-stored information checkout SNAC(13,05) FEEDBAG__QUERY_IF_MODIFIED

Use this snac to check if your SSI local copy up-to-date (mod-time & items-num match). If not - server will send SSI via SNAC(13,06), overwise you'll receive SNAC(13,0F).  00 13   word   SNAC family  00 05   word   SNAC subtype  00 00   word   SNAC flags  xx xx xx xx   dword   SNAC request-id  xx xx xx xx   dword   modification date/time of client local SSI copy  xx xx   word   number of items in client local SSI copy

Example SNAC dump with flap header:

2A 02 33 6C 00 10 00 13 00 05 00 00 00 01 00 05 *.3l............ 3D E7 48 17 00 BB =.H...

FEEDBAG SNACs

SNAC List

Subgroup Origin Name 0x0001 Any FEEDBAG__ERR This is the error SNAC for the FEEDBAG foodgroup. 0x0002 Client FEEDBAG__RIGHTS_QUERY This SNAC issues a query to the host for the client's Feedbag rights and to let the system know what kind of Feedbag support it wants. 0x0003 Host FEEDBAG__RIGHTS_REPLY This is the response to the FEEDBAG__RIGHTS_QUERY SNAC. 0x0004 Client FEEDBAG__QUERY This SNAC is sent to query the Feedbag data stored on the host. 0x0005 Client FEEDBAG__QUERY_IF_MODIFIED Similar to FEEDBAG__QUERY except contains a Unix epoch to check against in order to only send if modified. 0x0006 Host FEEDBAG__REPLY This is the reply to FEEDBAG_QUERY. 0x0007 Client FEEDBAG__USE Directs the host to use the specified stored Feedbag information. 0x0008 Any FEEDBAG__INSERT_ITEM When this SNAC is sent to the host, the client is requesting that one or more new items are added to the Feedbag. 0x0009 Any FEEDBAG__UPDATE_ITEM When this SNAC is sent to the host, the client is requesting to update one or more items. 0x000A Any FEEDBAG__DELETE_ITEM When this SNAC is sent to the host, the client is requesting that one or more items be deleted from the Feedbag. 0x000B NCD FEEDBAG__INSERT_CLASS This is not currently documented. 0x000C NCD FEEDBAG__UPDATE_CLASS This is not currently documented. 0x000D NCD FEEDBAG__DELETE_CLASS This is not currently documented. 0x000E Host FEEDBAG__STATUS These are the results of one of the insert/update/delete item SNACs from above. 0x000F Host FEEDBAG__REPLY_NOT_MODIFIED Response to client if Feedbag data is unmodified. 0x0010 NCD FEEDBAG__DELETE_USER This is not currently documented. 0x0011 NCD FEEDBAG__START_CLUSTER The cluster SNACs bracket a set of transactions that should be handled by clients as a group to avoid "flashing" the user's screen. 0x0012 NCD FEEDBAG__END_CLUSTER This SNAC ends the data burst started with START_CLUSTER. See FEEDBAG__START_CLUSTER. 0x0013 Client FEEDBAG__AUTHORIZE_BUDDY Grant authorization to another user. 0x0014 Client FEEDBAG__PRE_AUTHORIZE_BUDDY Pre-authorize another user. 0x0015 Host FEEDBAG__PRE_AUTHORIZED_BUDDY Host notification to a user that they have been pre-authorized. 0x0016 Client FEEDBAG__REMOVE_ME Delete current user from another user's Buddy List. 0x0017 Client FEEDBAG__REMOVE_ME2 This is not currently documented. 0x0018 Client FEEDBAG__REQUEST_AUTHORIZE_TO_HOST Send authorization request. 0x0019 Host FEEDBAG__REQUEST_AUTHORIZE_TO_CLIENT Host notice of authorization request from another user. 0x001A Client FEEDBAG__RESPOND_AUTHORIZE_TO_HOST Send authorization response to FEEDBAG__REQUEST_AUTHORIZE_TO_CLIENT. 0x001B Host FEEDBAG__RESPOND_AUTHORIZE_TO_CLIENT Host notice of grant or denial of authorization. 0x001C Host FEEDBAG__BUDDY_ADDED Host notice that another user has added current user to their Buddy List. 0x001D NCD FEEDBAG__REQUEST_AUTHORIZE_TO_BADOG This is not currently documented. 0x001E NCD FEEDBAG__RESPOND_AUTHORIZE_TO_BADOG This is not currently documented. 0x001F NCD FEEDBAG__BUDDY_ADDED_TO_BADOG This is not currently documented. 0x0021 Any FEEDBAG__TEST_SNAC This is not currently documented. 0x0022 NCD FEEDBAG__FORWARD_MSG This is not currently documented. 0x0023 NCD FEEDBAG__IS_AUTH_REQUIRED_QUERY This is not currently documented. 0x0024 NCD FEEDBAG__IS_AUTH_REQUIRED_REPLY This is not currently documented. 0x0025 NCD FEEDBAG__RECENT_BUDDY_UPDATE This is not currently documented.