[cifs-protocol] Precision related to FRS documentation

Mon Aug 29 09:51:38 MDT 2011

Hello Dochelp,

I have a couple of question related to FRS, it seems that the 
documentation is not 100% coherent among different paragraph and with 
the traces and also I'm not 100% sure to understand what it means.

In paragraph "3.3.4.4.1 Common Details" it is stated:

"COMM_TO:
GUID: MUST be P_IN.COMM_FROM.GUID.
Name: MUST be FQDN of the partner"

And in paragraph "3.3.4.6Establishing a Connection Session" it is stated:

"COMM_TO:
GUID: MUST be the objectGuid of the upstream partner NTFRS member object.
Name: MUST be the DNS host name of the upstream partner."

Is FQDN and DNS host name the same ? it seems so, if so can the same 
term be used in both places ?

The thing is that traces between 2 w2k3r2 DCs seems to show a bit 
different value

As you can see below in the dump of need_join_1 and need_join_2 the name 
field in the COMM_TO chunk is either a unc path 
('\\s1-w2k3r2.w2k.home.matws.net') or short hostname ('S2-W2K3R2') and 
the case makes me think it's more a netbios name (well in my case 
lower_case(netbios) = hostname(fqdn)).

./bin/ndrdump frsrpc frsrpc_FrsSendCommPkt in ~/need_join_1
pull returned NT_STATUS_OK
frsrpc_FrsSendCommPkt: struct frsrpc_FrsSendCommPkt
in: struct frsrpc_FrsSendCommPkt
req: struct frsrpc_FrsSendCommPktReq
major : FRSRPC_COMM_PKT_MAJOR_0 (0)
minor : FRSRPC_COMM_PKT_MINOR_8 (8)
cs_id : 0x00000001 (1)
memory_len : 0x00000200 (512)
pkt_len : 0x00000196 (406)
upk_len : 0x00000000 (0)
ctr : *
ctr: struct frsrpc_CommPktChunkCtr
num_chunks : 0x00000009 (9)
chunks: ARRAY(9)
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_BOP (0x1)
data : union frsrpc_CommPktChunkData(case 1)
bop : 0x00000000 (0)
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_COMMAND (0x2)
data : union frsrpc_CommPktChunkData(case 2)
command : FRSRPC_COMMAND_NEED_JOIN (0x121)
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_TO (0x3)
data : union frsrpc_CommPktChunkData(case 3)
to: struct frsrpc_CommPktChunkGuidName
guid : 5a38e8ea-be6f-4f63-a15e-d28a70fecffe
name : '\\s1-w2k3r2.w2k.home.matws.net'
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_FROM (0x4)
data : union frsrpc_CommPktChunkData(case 4)
from: struct frsrpc_CommPktChunkGuidName
guid : 0b23079e-6c35-44f5-803f-3e252489ec29
name : 'S2-W2K3R2'
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_REPLICA (0x5)
data : union frsrpc_CommPktChunkData(case 5)
replica: struct frsrpc_CommPktChunkGuidName
guid : 5a38e8ea-be6f-4f63-a15e-d28a70fecffe
name : 'DOMAIN SYSTEM VOLUME (SYSVOL SHARE)'
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_CONNECTION (0x8)
data : union frsrpc_CommPktChunkData(case 8)
connection: struct frsrpc_CommPktChunkGuidName
guid : f855cff3-5697-437e-a736-f46b590bd645
name : '\\s1-w2k3r2.w2k.home.matws.net'
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_JOIN_GUID (0x6)
data : union frsrpc_CommPktChunkData(case 6)
join_guid : 00000000-0000-0000-0000-000000000000
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_LAST_JOIN_TIME (0x12)
data : union frsrpc_CommPktChunkData(case 18)
last_join_time : jeu. janv. 1 01:00:00 1970 CET
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_EOP (0x13)
data : union frsrpc_CommPktChunkData(case 19)
bopend : 0xffffffff (4294967295)
data_name : 0x00000002 (2)
data_handle : 0x00000000 (0)
dump OK

./bin/ndrdump frsrpc frsrpc_FrsSendCommPkt in ~/need_join_2
pull returned NT_STATUS_OK
WARNING! 52 unread bytes
[0000] 8A E3 13 71 02 F4 36 71 02 40 28 00 B4 59 CC F5 ...q..6q .@(..Y..
[0010] 64 42 1A 10 8C 59 08 00 2B 2F 84 26 01 00 01 00 dB...Y.. +/.&....
[0020] 04 5D 88 8A EB 1C C9 11 9F E8 08 00 2B 10 48 60 .]...... ....+.H`
[0030] 02 00 00 00 ....
frsrpc_FrsSendCommPkt: struct frsrpc_FrsSendCommPkt
in: struct frsrpc_FrsSendCommPkt
req: struct frsrpc_FrsSendCommPktReq
major : FRSRPC_COMM_PKT_MAJOR_0 (0)
minor : FRSRPC_COMM_PKT_MINOR_8 (8)
cs_id : 0x00000001 (1)
memory_len : 0x00000180 (384)
pkt_len : 0x00000178 (376)
upk_len : 0x00000000 (0)
ctr : *
ctr: struct frsrpc_CommPktChunkCtr
num_chunks : 0x00000009 (9)
chunks: ARRAY(9)
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_BOP (0x1)
data : union frsrpc_CommPktChunkData(case 1)
bop : 0x00000000 (0)
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_COMMAND (0x2)
data : union frsrpc_CommPktChunkData(case 2)
command : FRSRPC_COMMAND_NEED_JOIN (0x121)
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_TO (0x3)
data : union frsrpc_CommPktChunkData(case 3)
to: struct frsrpc_CommPktChunkGuidName
guid : 0b23079e-6c35-44f5-803f-3e252489ec29
name : 'S2-W2K3R2'
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_FROM (0x4)
data : union frsrpc_CommPktChunkData(case 4)
from: struct frsrpc_CommPktChunkGuidName
guid : 5a38e8ea-be6f-4f63-a15e-d28a70fecffe
name : 'S1-W2K3R2'
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_REPLICA (0x5)
data : union frsrpc_CommPktChunkData(case 5)
replica: struct frsrpc_CommPktChunkGuidName
guid : 0b23079e-6c35-44f5-803f-3e252489ec29
name : 'DOMAIN SYSTEM VOLUME (SYSVOL SHARE)'
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_CONNECTION (0x8)
data : union frsrpc_CommPktChunkData(case 8)
connection: struct frsrpc_CommPktChunkGuidName
guid : 9d75a3bd-ee1e-4ee3-bafd-84ec61a914f9
name : '042988D1-41FB-4D3A-9992-416414FF05A4'
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_JOIN_GUID (0x6)
data : union frsrpc_CommPktChunkData(case 6)
join_guid : 00000000-0000-0000-0000-000000000000
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_LAST_JOIN_TIME (0x12)
data : union frsrpc_CommPktChunkData(case 18)
last_join_time : jeu. janv. 1 01:00:00 1970 CET
chunks: struct frsrpc_CommPktChunk
type : FRSRPC_COMM_PKT_CHUNK_EOP (0x13)
data : union frsrpc_CommPktChunkData(case 19)
bopend : 0xffffffff (4294967295)
data_name : 0x00000002 (2)
data_handle : 0x00000000 (0)
dump OK

Can you explain ?

Matthieu.

-- 
Matthieu Patou
Samba Team        http://samba.org
Private repo      http://git.samba.org/?p=mat/samba.git;a=summary

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