ACT Services

The ACT module handles NNID accounts. This module behaves very similarly to the Wii U implementation (nn::act)

ACT service "act:u"

These commands are common to both act:u and act:a

Command Header	Available since system-version	Description
0x00010084		Initialize
0x00020040		GetErrorCode
0x00030000		GetLastResponseCode
0x00040000		?
0x00050082		GetCommonInfo
0x000600C2		GetAccountDataBlock/GetAccountInfo
0x00070082		GetResultAsync
0x000800C2		GetMiiImageData
0x00090180		SetNfsPassword
0x000A0040?		?
0x000B0042		AcquireEulaList
0x000C0082		AcquireTimeZoneList
0x000D0040		GenerateUuid
0x000E0080		?
0x000F0140		FindSlotNoByUuid
0x00100000		SaveData
0x00110080		GetTransferableId
0x00120102		AcquireNexServiceToken
0x00130002		GetNexServiceToken
0x00140382		AcquireIndependentServiceToken
0x00150002		GetIndependentServiceToken
0x00160082		AcquireAccountInfo
0x00170084		AcquireAccountIdByPrincipalId
0x00180044		AcquirePrincipalIdByAccountId
0x00190044		AcquireMii
0x001A0042		AcquireAccountInfoEx
0x001B0084		AcquireOtherTypePrincipalID?
0x001C0342		?
0x001D0004		InquireMailAddress
0x001E0082		AcquireEula
0x001F0082		AcquireEulaLanguageList
0x00200382		?
0x00210002		?
0x00220342		?

ACT service "act:a"

These commands are exclusive to act:a

Command Header	Available since system-version	Description
0x04010080		?
0x04020000		CreateConsoleAccount
0x04030040		CommitConsoleAccount
0x04040080		UnbindServerAccount
0x04050040		DeleteConsoleAccount
0x04060240		?
0x04070000		UnloadConsoleAccount
0x04080080		EnableAccountPasswordCache
0x04090040		SetDefaultAccount
0x040A0040		ReplaceAccountId
0x040B0040		GetSupportContext
0x040C0100		?
0x040D00C0		?
0x040E02C0		?
0x040F0280		?
0x04100040		?
0x04110040		?
0x041207C0		UpdateMii
0x041300C2		UpdateMiiImage
0x04140182		InquireAccountIdAvailability
0x04150EC4		BindToNewServerAccount
0x041602C4		BindToExistentServerAccount
0x041702C4		InquireBindingToExistentServerAccount
0x04180042		?
0x04190042		?
0x041A01C2		AcquireAccountTokenEx
0x041B0142		AgreeEula
0x041C0042		SyncAccountInfo
0x041D0080		?
0x041E0182		UpdateAccountPassword
0x041F0042		ReissueAccountPassword
0x04200180		SetAccountPasswordInput
0x04210042		UploadMii
0x04220042		?
0x04230082		ValidateMailAddress
0x04240044		?
0x04250042		SendConfirmationMail
0x04260044		?
0x04270084		?
0x04280044		ApproveByCreditCard
0x04290082		SendCoppaCodeMail
0x042A0080		?
0x042B01C4		?
0x042C0042		?
0x042D0042		?
0x042E0080		?
0x042F0084		UpdateAccountInfoEx
0x04300044		UpdateAccountMailAddress
0x04310042		?
0x04320042		?
0x04330042		?
0x04340003		?
0x04350042		DeleteServerAccount

This is the service used by regular applications.

Account slots

Like the friends sysmodule, the ACT module supports multiple accounts internally, although this functionality is not exposed to the users. Unlike the Wii U which supports up to 12 accounts, the 3DS only has 8 account slots.

Some commands require require the account slot as an argument, which is 1-indexed. The value for using the current loaded account is 0xFE.

DataBlocks

Data blocks can be accessed from specific commands depending on the data that is requested. These follow a similar order to the Wii U ACTInfoTypes.

BlkID	Size	Command needed	Description
0x1	0x1	GetCommonInfo	Number of accounts
0x2	0x1	GetCommonInfo	Current account slot
0x3	0x1	GetCommonInfo	Default account slot
0x4	0x8	GetCommonInfo	?
0x5	0x4	GetAccountInfo	PersistentId
0x6	0x8	GetCommonInfo/GetAccountInfo	CommonTransferableIdBase on GetCommonInfo / TransferableIdBase on GetAccountInfo
0x7	0x60	GetAccountInfo	MiiData
0x8	0x11	GetAccountInfo	AccountId (ASCII NUL-terminated Nintendo Network ID)
0x9	0x101	AcquireAccountInfo	Mail address
0xA	0x4	GetAccountInfo	Birthday {u16 year; u8 month; u8 day;}
0xB	0x3	GetAccountInfo	ASCII NUL-terminated Country Name
0xC	0x4	GetAccountInfo	PrincipalId
0xE	0x1	GetAccountInfo	IsPasswordCacheEnabled
0xF	0x1	GetAccountInfo	Does nothing?
0x11	0xA0	GetAccountInfo	struct{u32 PersistentID; u32 padding; u64 TransferableIDBase; u8[0x60] MiiData; char16_t[0xB] MachinUserName?; char[0x11] AccountID; u8 padding; struct{u16 year; u8 month; u8 day;}Birthday; u32 PrincipalID;}
0x12	0x4	GetAccountInfo	?
0x13	0x1	GetAccountInfo	Gender
0x14	0x1	GetAccountInfo	LastAuthenticationResult
0x15	0x11	GetAccountInfo	AssignedAccountId (ASCII NUL-terminated Nintendo Network ID)
0x16	0x1	GetAccountInfo	ParentalControlSlotNo
0x17	0x4	GetAccountInfo	SimpleAddressId (CountryInfo)
0x19	0x8	GetAccountInfo	UtcOffset
0x1A	0x1	GetAccountInfo	IsCommited
0x1B	0x16	GetAccountInfo	MiiName (NUL-terminated UTF-16 Mii name)
0x1C	0x11	GetAccountInfo	NfsPassword
0x1D	0x1	GetAccountInfo	Bool: if EciVirtualAccount has a value
0x1E	0x41	GetAccountInfo	TimeZoneId (ASCII Time Zone Location)
0x1F	0x1	GetAccountInfo	IsMiiUpdated
0x20	0x1	GetAccountInfo	IsMailAddressValidated
0x21	0x4C	GetAccountInfo	?
0x24	0x1	GetAccountInfo	IsServerAccountDeleted
0x25	0x101	GetAccountInfo	MiiImageUrl (ASCII NUL-terminated URL to account mii image)
0x26	0x4	GetAccountInfo	AssignedPrincipalId
0x27	0x4	GetAccountInfo	? (Only accessible with param[1] = 0xFE)
0x28	0x24	GetAccountInfo	struct{char[0x21] NnasSubDomain?; char[0x3] NnasNfsEnv;}
0x29	0x24	GetCommonInfo	struct{char[0x21] DefaultNnasSubDomain?; char[0x3] DefaultNnasNfsEnv;}
0x2A	0x8	GetCommonInfo	?
0x2B	0x1	GetAccountInfo	FpLocalAccountId
0x2C	0x2	GetAccountInfo	Age
0x2D	0x1	GetAccountInfo	IsEnabledReceiveAds
0x2E	0x1	GetAccountInfo	IsOffDeviceAccessEnabled
0x2F	0x4	GetAccountInfo	Translated SimpleAddressId (CountryInfo)

HTTPS Requests

With each request, ACT-sysmodule specifies request-header "X-Nintendo-Device-Model". This is the only *dedicated* request-header that's contains anything Old3DS/New3DS specific. This was implemented with 9.0.0-X, and presumably 8.1.0-0_New3DS. The value is from a string initialized during ACT-sysmodule startup. The value-string is the codename string for all 5 of the model values from Cfg:GetSystemModel. When the output from GetSystemModel is >=5(switch statement default case), it runs this: "len = snprintf(outstr, outmaxsize, "3DS-%u", model);"

Trusted Root CAs

ACT module uses a RootCertChain for all HTTPS requests, the only trusted root CA is default CertID 0x3.

New3DS

Even though ACT-sysmodule uses ptm:s, it doesn't use CheckNew3DS at all.