Friend Services

Friend Service "frd:u"

Command Header	Description
0x00010000	HasLoggedIn
0x00020000	IsOnline
0x00030002	Login
0x00040000	Logout
0x00050000	GetMyFriendKey
0x00060000	GetMyPreference
0x00070000	GetMyProfile
0x00080000	GetMyPresence
0x00090000	GetMyScreenName
0x000A0000	GetMyMii
0x000B0000	GetMyLocalAccountId
0x000C0000	GetMyPlayingGame
0x000D0000	GetMyFavoriteGame
0x000E0000	GetMyNcPrincipalId
0x000F0000	GetMyComment
0x00100040	GetMyPassword
0x00110080	GetFriendKeyList
0x00120042	GetFriendPresence
0x00130142	GetFriendScreenName
0x00140044	GetFriendMii
0x00150042	GetFriendProfile
0x00160042	GetFriendRelationship
0x00170042	GetFriendAttributeFlags
0x00180044	GetFriendPlayingGame
0x00190042	GetFriendFavoriteGame
0x001A00C4	GetFriendInfo
0x001B0080	IsIncludedInFriendList
0x001C0042	UnscrambleLocalFriendCode
0x001D0002	UpdateGameModeDescription
0x001E02C2	UpdateMyPresence
0x001F0042	SendInvitation
0x00200002	AttachToEventNotification
0x00210040	SetNotificationMask
0x00220040	GetEventNotification
0x00230000	GetLastResponseResult
0x00240040	PrincipalIdToFriendCode
0x00250080	FriendCodeToPrincipalId
0x00260080	IsValidFriendCode
0x00270040	ResultToErrorCode
0x00280244	RequestGameAuthentication
0x00290000	GetGameAuthenticationData
0x002A0204	RequestServiceLocator
0x002B0000	GetServiceLocatorData
0x002C0002	DetectNatProperties
0x002D0000	GetNatProperties
0x002E0000	GetServerTimeDifference
0x002F0040	AllowHalfAwake
0x00300000	GetServerTypes
0x00310082	GetFriendComment
0x00320042	SetClientSdkVersion
0x00330000	GetMyApproachContext
0x00340046	AddFriendWithApproach
0x00350082	DecryptApproachContext
0x00360000	GetExtendedNatProperties

"frd:n"

Command Header	Description
0x00010000	GetHandleOfNdmStatusChangedEvent
0x00020000	Resume
0x00030040	SuspendAsync
0x00040000	QueryStatus

"frd:a"

This contains a similar (probably the same) command handler from 0x0001.... to 0x002F.... as them in frd:u. In addition, it also contains

Command Header	Description
0x04010100	CreateLocalAccount
0x04020040	?
0x04030040	SetLocalAccountId
0x04040000	?
0x04050000	Used in creating the user Mii. No cmdbuff parameters.
0x04060042	AddFriendOnline
0x04070D80	AddFriendOffline
0x040802C0	?
0x04090100	RemoveFriend
0x040A0100	UpdatePlayingGame
0x040B00C0	UpdatePreferences
0x040C0800	UpdateMii
0x040D0100	UpdateFavoriteGame
0x040E0040	UpdateNcPrincipalId
0x040F...	UpdateComment
0x04100000	?

HTTPS Requests

Trusted RootCAs

No RootCertChain(s) are used. For the nasc site, friends-module uses HTTPC:AddDefaultCert with the following certIDs: 0x1, 0x2, and 0x3.

Types

FriendKey

Offset	Size	Description
0x0	0x4	Principal ID
0x4	0x4	padding
0x8	0x8	Friend Code

GameKey

Offset	Size	Description
0x0	0x8	u64, Title ID
0x8	0x2	u16, Title Version
0xA	0x6	Unused padding.

Presence

Offset	Size	Description
0x0	0x4	u32 JoinAvailabilityFlag
0x4	0x4	u32 MatchmakeSystemType
0x8	0x4	u32 JoinGameID
0xC	0x4	u32 JoinGameMode
0x10	0x4	u32 OwnerPrincipalID
0x14	0x4	u32 JoinGroupID
0x18	0x14	u8 ApplicationArg[20]

Mii Data

Offset	Size	Description
0x0	0x1	bool, ProfanityFlag
0x1	0x1	Mii character set
0x2	0x1	bool, DirtyFlag
0x3	0x1	padding
0x4	0x5C	Mii data

Profile

Offset	Size	Description
0x0	0x1	u8, Region
0x1	0x1	u8, Country
0x2	0x1	u8, Area
0x3	0x1	u8, Language
0x4	0x1	u8, Platform, always 2 (PLATFORM_CTR)
0x5	0x3	padding

FriendProfile

Offset	Size	Description
0x0	0x8	Profile
0x8	0x10	GameKey of favorite game
0x18	0x4	u32, NcPrincipalID
0x1C	0x22	16-Character UTF-16 Personal Message (16 characters + null termination)
0x3E	0x2	padding
0x40	0x8	NEX Timestamp when this friend was last seen online

FriendInfo

Offset	Size	Description
0x0	0x10	FriendKey of this friend
0x10	0x8	NEX Timestamp when this friend was added to the friends list
0x18	0x1	The relationship with this friend
0x19	0x7	padding
0x20	0x48	FriendProfile of this friend
0x68	0x16	10-Character UTF-16 Screen Name (10 characters + null termination)
0x7E	0x1	u8, Mii character set
0x7F	0x1	padding
0x80	0x60	This friend's Mii

GameAuthenticationData

Offset	Size	Description
0x0	0x4	NASC Login Result
0x4	0x4	HTTP Status Code
0x8	0x20	Server Address (string)
0x28	0x2	Server Port
0x2A	0x6	padding
0x30	0x100	Token for game server authentication (string)
0x130	0x8	NEX Timestamp for server time

ServiceLocatorData

Offset	Size	Description
0x0	0x4	NASC Login Result
0x4	0x4	HTTP Status Code
0x8	0x80	Service Host (string)
0x88	0x100	Service Token (string)
0x188	0x1	statusdata from NASC response
0x189	0x7	padding
0x190	0x8	NEX Timestamp for server time

Approach Contexts

The approach context (in the form of an encrypted payload) of the console can be retrieved using FRDU:GetMyApproachContext.

Encrypted payloads can be decrypted using FRDU:DecryptApproachContext.

It is possible to add a friend using an encrypted payload using FRDA:AddFriendWithApproach.

ApproachContext

Offset	Size	Description
0x0	0x48	Friend Profile of the console that created this approach context
0x48	0x1	bool, Has Mii
0x49	0x1	bool, Profanity Flag
0x4A	0x1	u8, Mii Character Set
0x4B	0x70	Friend Mii Data wrapped using APT:Wrap
0xBB	0x16	10-Character UTF-16 Screen Name (10 characters + null termination)
0xD1	0x10F	unused

Encrypted ApproachContext Payload

Offset	Size	Description
0x0	0x1	(u8) unknown, initialized to 1 internally, set to 1 when the PS encryption command succeeds, otherwise 0. Must be 1 when decrypting, otherwise error 0xE0E0C4E9 is returned
0x1	0x1	(u8) unknown, always set to 0
0x2	0x1	(u8) unknown, initialized to 2 internally, always set to either 1 when the PS encryption command succeeds, or otherwise 0. Must be 1 when decrypting, otherwise error 0xE0E0C4E9 is returned
0x3	0x1	(u8) unknown, always set to 0
0x4	0x4	u32, Principal ID (part of nonce)
0x8	0x8	u64, Friend Code (part of nonce)
0x10	0x1E0	ApproachContext
0x1F0	0x10	AES-CCM MAC over the encrypted payload at 0x10 thru 0x1F0

Notification Events

The friends module exposes a "Notification Events" system that allows client sessions to be notified of various related events.

A client sets its per-session notification event signaling handle using FRDU:AttachToEventNotification.

The client can then customize for which Notification Event Types it shall receive notifications using FRDU:SetNotificationMask.

Once the handle has been signaled by the friends module, the client can use FRDU:GetEventNotification to receive the notifications.

Notification Event Types

Value	Description
1	The console went online.
2	The console went offline.
3	A friend is now present (went online).
5	A friend changed their Mii.
6	A friend changed their Profile.
7	A friend is no longer present (went offline).
8	A friend has added you back as a friend (if you had added them before as a "provisionally registered" friend).
9	A friend sent you a **joinable** game invitation(?) (only signaled when the console's JoinGameID matches that of the friend).
146	A friend changed their favorite game.
147	A friend changed their personal message.
149	A friend sent you an invitation. (signaled regardless of whether the console's JoinGameID matches that of the friend)

EventNotification

Offset	Size	Description
0x0	0x1	u8, Event Type
0x1	0x7	padding
0x8	0x10	FriendKey of the friend who caused this notification to be sent

Relationship Types

Every valid entry in the internal friends list contains a relationship field.

Value	Description
0	The target has been added locally and on the server, but is only "provisionally registered." The target has not added you as a friend.
1	The target has been added locally and on the server and is fully registered: the target has also added you as a friend.
2	No relationship between you and the target has been found: neither you nor the target have added each other.
3	The relationship has been deleted: the target has deleted your friend card.
4	The target has been added locally: you were not online when you added the target. (presumably only happens when the "Local" method of adding a friend is used. When the system connects to the internet, a background task runs to register this relationship on the friends server.)

Attribute Flags

Flag	Description
0x1	Unknown (something like "target ever registered you"?), set when relationship type is 1, 3 or 4
0x2	Unknown, set only when relationship type is 1

NASC Result

Value	Description
001	Success.
101	Game server is under maintenance.
102	Device is banned.
107	Invalid product code.
109	Invalid/missing request parameter.
110	Game server is no longer available.
112	Invalid SVC.
119	Invalid FPD version.
120	Invalid title version.
121	Invalid device certificate.
122	Invalid PID HMAC.
123	ROM ID is banned.
125	Invalid Game ID.
127	Invalid key hash.

Server Types

The server type is stored internally as a combination of two values, the first value represents the server type letter and the second value is the number that follows it. For example, the production server type is "L1", so the first value is 0 and the second value is 1.

Official servers only support the letters L, C, S, D, I, T, J or U.

Value	Server Type Letter
0	L
1	C
2	S
3	D
4	I
5	T
6	U (fallback to default value)
7	J
8	X
9	A
10	B
11	C
12	D
13	E
14	F
15	G
16	H
17	I
18	J
19	K
20	L
21	M
22	N
23	O
24	P
25	Q
>=26	U