BCAT services

BCAT (Background Content Asymmetric synchronized delivery and Transmission) encompasses a set of content download/upload related services.

bcat:a, bcat:m, bcat:u, bcat:s

These are "nn::bcat::detail::ipc::IServiceCreator".

These were added with [2.0.0+].

Cmd	Name	Notes
0	CreateBcatService	Takes an input u64 ProcessId, returns an #IBcatService
1	CreateDeliveryCacheStorageService	Takes an input u64 ProcessId, returns an #IDeliveryCacheStorageService
2	CreateDeliveryCacheStorageServiceWithApplicationId	Takes an input u64 TitleId, returns an #IDeliveryCacheStorageService
3	[2.0.0-2.3.0] CreateDeliveryCacheProgressService	Takes an input u64 ProcessId, returns an #IDeliveryCacheProgressService
4	[2.0.0-2.3.0] CreateDeliveryCacheProgressServiceWithApplicationId	Takes an input u64 TitleId, returns an #IDeliveryCacheProgressService

Equivalent to 3DS BOSS(SpotPass). See here for BCAT-content-container.

IBcatService

This is "nn::bcat::detail::ipc::IBcatService".

This was added with [2.0.0+].

Cmd	Name
10100	#RequestSyncDeliveryCache
10101	[5.0.0+] RequestSyncDeliveryCacheWithDirectoryName
10200	[5.0.0+] CancelSyncDeliveryCacheRequest
20100	#RequestSyncDeliveryCacheWithApplicationId
20101	[5.0.0+] RequestSyncDeliveryCacheWithApplicationIdAndDirectoryName
20300	[8.0.0+] #GetDeliveryCacheStorageUpdateNotifier
20301	[8.0.0+] #RequestSuspendDeliveryTask
20400	[9.0.0+] #RegisterSystemApplicationDeliveryTask
20401	[9.0.0+] #UnregisterSystemApplicationDeliveryTask
20410	[9.1.0+] SetSystemApplicationDeliveryTaskTimer
30100	SetPassphrase
30101	[2.0.0-2.3.0]
30102	[2.0.0-2.3.0]
30200	[3.0.0+] RegisterDeliveryTask
30201	[3.0.0+] UnregisterDeliveryTask
30202	[3.0.0+] BlockDeliveryTask
30203	[3.0.0+] UnblockDeliveryTask
30210	[9.1.0+] SetDeliveryTaskTimer
30300	[8.0.0+] RegisterSystemApplicationDeliveryTasks
90100	GetDeliveryTaskList
90200	#GetDeliveryList
90201	[3.0.0+] ClearDeliveryCacheStorage
90202	[8.0.0+] ClearDeliveryTaskSubscriptionStatus
90300	[3.0.0+] GetPushNotificationLog

RequestSyncDeliveryCache

No input/output.

[3.0.0+] Now returns an #IDeliveryCacheProgressService.

RequestSyncDeliveryCacheWithApplicationId

Takes an input u64 nn::ApplicationId, no output.

[3.0.0+] Now takes an additional 8-bytes of input, and returns an #IDeliveryCacheProgressService.

GetDeliveryCacheStorageUpdateNotifier

Takes an input u64 nn::ApplicationId, returns an #INotifierService.

RequestSuspendDeliveryTask

Takes an input u64 nn::ApplicationId, returns an #IDeliveryTaskSuspensionService.

RegisterSystemApplicationDeliveryTask

Takes an input u64 nn::ApplicationId, no output.

UnregisterSystemApplicationDeliveryTask

Takes an input u64 nn::ApplicationId, no output.

GetDeliveryList

Takes a type-0x6 output buffer, returns a total of 4-bytes of output.

[3.0.0+] Now takes a total of 8-bytes of input, and returns an additional 4-bytes of output.

IDeliveryCacheProgressService

This is "nn::bcat::detail::ipc::IDeliveryCacheProgressService".

This was added with [2.0.0+].

Cmd	Name
0	GetEvent
1	GetImpl

IDeliveryCacheStorageService

This is "nn::bcat::detail::ipc::IDeliveryCacheStorageService".

This was added with [2.0.0+].

Cmd	Name
0	CreateFileService
1	CreateDirectoryService
10	EnumerateDeliveryCacheDirectory

IDeliveryCacheFileService

This is "nn::bcat::detail::ipc::IDeliveryCacheFileService".

This was added with [2.0.0+].

Cmd	Name
0	Open
1	Read
2	GetSize
3	GetDigest

IDeliveryCacheDirectoryService

This is "nn::bcat::detail::ipc::IDeliveryCacheDirectoryService".

This was added with [2.0.0+].

Cmd	Name
0	Open
1	Read
2	GetCount

INotifierService

This is "nn::bcat::detail::ipc::INotifierService".

Added with [8.0.0+].

Cmd	Name	Notes
0	GetEvent

IDeliveryTaskSuspensionService

This is "nn::bcat::detail::ipc::IDeliveryTaskSuspensionService".

Added with [8.0.0+].

Cmd	Name	Notes
0	GetEvent

news:a, news:c, news:m, news:p, news:v

These are "nn::news::detail::ipc::IServiceCreator".

On [1.0.0] these are "nn::news::detail::ipc::INewsService", see #INewsService.

News entries are fetched from CDN[1]. Metadata for each entry is stored and queried from an internal SQLite database. Official software uses sqlite[2] for processing.

All sessions have 32 sessions. Permission masks are:

Name	Mask
news:a	0xffffffff
news:p	0x1
news:c	0x2
news:v	0x4
news:m	0xd

Cmd	Name	Notes
0	CreateNewsService	No input, returns an #INewsService.
1	CreateNewlyArrivedEventHolder	No input, returns an #INewlyArrivedEventHolder.
2	CreateNewsDataService	No input, returns an #INewsDataService.
3	CreateNewsDatabaseService	No input, returns an #INewsDatabaseService.
4	CreateOverwriteEventHolder	No input, returns an #IOverwriteEventHolder.

CreateNewsDataService and CreateNewsDatabaseService require permission bit 2.

INewsService

This is "nn::news::detail::ipc::INewsService".

Cmd	Name	Required Permission Bits
10100	#PostLocalNews	0
20100	SetPassphrase	1
30100	GetSubscriptionStatus	1 or 2
30101	[3.0.0+] GetTopicList	2
#30110	[6.0.0+]	2
30200	#IsSystemUpdateRequired	2
30201	[8.0.0+]	2
#30210	[10.0.0+]	2
30300	RequestImmediateReception	2
30400	[3.0.0+] DecodeArchiveFile	2
#30500	[8.0.0+] ?	2
30900	[1.0.0] (No input, returns an #INewlyArrivedEventHolder)	2
30901	[1.0.0] (No input, returns an #INewsDataService)	2
30902	[1.0.0] (No input, returns an #INewsDatabaseService)	2
40100	SetSubscriptionStatus	1 or 3
40101	[3.0.0+] RequestAutoSubscription	3
40200	ClearStorage	3
40201	ClearSubscriptionStatusAll	1 or 3
90100	#GetNewsDatabaseDump	4

PostLocalNews

Takes an input buffer msgpack.

30110

Returns two u64s. Current usage and total size of the news-mounted savedata 0x8000000000000090.

IsSystemUpdateRequired

Matches the version in news-sys:/sup.version against the result from system setting news!system_version.

30210

Returns the Database version retrieved from system setting news!db_version

30500

Takes a type-0x9 input buffer URL, the size of the transfer memory and a handle for the latter, returns an #IUnknown2.

GetNewsDatabaseDump

Dumps internal SQLite file.

INewlyArrivedEventHolder

This is "nn::news::detail::ipc::INewlyArrivedEventHolder".

Cmd	Name
0	#Get

Get

Returns readable event. Event is signaled on PostLocalNews or on fetch from CDN if the file doesn't exist.

INewsDataService

This is "nn::news::detail::ipc::INewsDataService".

Cmd	Name
0	#Open
1	#OpenWithNewsRecordV1
2	#Read
3	#GetSize
1001	[6.0.0+] #OpenWithNewsRecord

Open

Takes an input string. Opens file with the output of snprintf from "news:/data/%s" with input.

OpenWithNewsRecordV1

Takes an input #NewsRecordV1. Opens file with the output of snprintf of "news:/data/D00000000000000000000_%s.msgpack" with news_id if user_id is empty or else of "news:/data/U%s_%s.msgpack" with user_id and news_id of input.

Read

Read from file opened with #Open, #OpenWithNewsRecordV1 or #OpenWithNewsRecord.

GetSize

Get size of file opened with #Open, #OpenWithNewsRecordV1 or #OpenWithNewsRecord.

OpenWithNewsRecord

Takes an input #NewsRecord. Same behavior as #OpenWithNewsRecordV1.

INewsDatabaseService

This is "nn::news::detail::ipc::INewsDatabaseService".

Cmd	Name
0	GetListV1
1	Count
2	CountWithKey
3	UpdateIntegerValue
4	UpdateIntegerValueWithAddition
5	UpdateStringValue
1000	[6.0.0+] GetList

IOverwriteEventHolder

This is "nn::news::detail::ipc::IOverwriteEventHolder".

Cmd	Name
0	#Get

Get

Returns readable event. Event is signaled on fetch from CDN if the file already exists.

IUnknown2

This was added with [8.0.0+]. On creation this object is enqueued and an event is signaled prompting a download from another thread (nn.news.Downloader).

(Made up names)

Cmd	Name
0	#Get
1	#Cancel
2	#GetResult
3	#GetSize

Get

Return event handle. Signaled on download finish.

Cancel

Cancels Download.

GetResult

Returns last result.

GetSize

Returns final decoded size. 0 if the result of #GetResult is not 0 or Download isn't finished/was canceled.

NewsDatabase

Internal SQLite database. Has a second version since 6.0.0.

Name	Type	Exists
news_id	TEXT	All
user_id	TEXT	All
topic_id	TEXT	All
application_ids	TEXT	All
received_at	INTEGER	All
published_at	INTEGER	All
expire_at	INTEGER	All
pickup_limit	INTEGER	All
essential_pickup_limit	INTEGER	Only V2
priority	INTEGER	All
deletion_priority	INTEGER	All
age_limit	INTEGER	All
surprise	INTEGER	All
bashotorya	INTEGER	Only V1
decoration_type	INTEGER	Only V2
point	INTEGER	All
read	INTEGER	All
newly	INTEGER	All
displayed	INTEGER	All
opted_in	INTEGER	All
point_status	INTEGER	All
feedback	INTEGER	Only V2
extra_1	INTEGER	All
extra_2	INTEGER	All

NewsRecordV1

Offset	Size	SQLite association
0x0	0x18	TEXT news_id
0x18	0x18	TEXT user_id
0x30	0x8	INTEGER received_id
0x38	0x4	INTEGER news
0x3c	0x4	INTEGER newly
0x40	0x4	INTEGER displayed
0x44	0x4	none

NewsRecord

Offset	Size	SQLite association
0x0	0x18	TEXT news_id
0x18	0x18	TEXT user_id
0x30	0x20	TEXT topic_id
0x50	0x8	INTEGER received_id
0x58	0x8	none
0x60	0x4	INTEGER decoration_type
0x64	0x4	INTEGER read
0x68	0x4	INTEGER newly
0x6c	0x4	INTEGER displayed
0x70	0x4	INTEGER feedback
0x74	0x4	none
0x78	0x4	INTEGER extra_1
0x7c	0x4	INTEGER extra_2

prepo:a, prepo:a2, prepo:m, prepo:u, prepo:s

These are "nn::prepo::detail::ipc::IPrepoService".

Cmd	Name
10100	SaveReportOld ([1.0.0-5.1.0] SaveReport)
10101	SaveReportWithUserOld ([1.0.0-5.1.0] SaveReportWithUser)
10102	[6.0.0+] SaveReportOld2 ([1.0.0-9.2.0] SaveReport)
10103	[6.0.0+] SaveReportWithUserOld2 ([1.0.0-9.2.0] SaveReportWithUser)
10104	[10.0.0+] SaveReport
10105	[10.0.0+] SaveReportWithUser
10200	RequestImmediateTransmission
10300	GetTransmissionStatus
10400	[9.0.0+] GetSystemSessionId
20100	SaveSystemReport
20101	SaveSystemReportWithUser
20200	[4.0.0+] SetOperationMode
30100	ClearStorage
30200	[6.0.0+] ClearStatistics
30300	[6.0.0+] GetStorageUsage
30400	[6.0.0+] GetStatistics
30401	[6.0.0+] GetThroughputHistory
30500	[6.0.0+] GetLastUploadError
30600	[10.0.0+] GetApplicationUploadSummary
40100	[2.0.0+] IsUserAgreementCheckEnabled
40101	[2.0.0+] SetUserAgreementCheckEnabled
50100	[10.0.0+] ReadAllApplicationReportFiles
90100	[6.0.0+] ReadAllReportFiles ([1.0.0-5.1.0] GetStorageUsage)
90101	[1.0.0]
90102	[1.0.0]
90200	[5.0.0-5.1.0] GetStatistics
90201	[5.0.0-5.1.0] GetThroughputHistory
90300	[5.0.0-5.1.0] GetLastUploadError

Data reporting

The "Play Report" (prepo) service uploads system and user information to a cloud server. This includes the following fields:

sys_info
data
application_id
event_id
operation_mode
lc_recorded_at (followed by a timestamp)
nc_recorded_at (followed by a timestamp)
nsa_id
os_version

And the contents of the following file:

is_user_agreement_check_enabled.bin

All the information is periodically uploaded to the following URL:

• https://receive-%.dg.srv.nintendo.net/post

It also checks the validity of the device's authentication token using the following URL:

• https://dauth-%.ndas.srv.nintendo.net/v1/device_auth_token