LDN services: Difference between revisions

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Line 540:

[18.0.0+] The sdknso uses SessionManager with this, where the additional session-count is 0x3.

[S2] There appears to be 2 ldn:u services, this appears to be for having separate [[#Protocol|Protocol]] permissions for NX and Ounce games.

[S2] There appears to be 2 ldn:u services, this appears to be for having separate [[#Protocol|Protocol]] permissions for NX and Ounce games. The Creator object has the same vtable for both of these. However the vtable for IUserLocalCommunicationService appears to be larger even with NX, which likely indicates there's new commands? There also appears to be 4 additional max-sessions allocated to ldn*, this is probably for one of these ldn:u services?

{| class="wikitable" border="1"

Line 1,481:

There's system-titles which [[20.0.0|use]] SetProtocol. While there's game(s) which use SetProtocol, there's no known (?) games using Protocol3 (excluding GameShare which is system).

Protocol2 and Protocol4 appear to be identical to Protocol3 except for using [[SPL_services|Ounce]] keys (?)~~, with AES-128~~. It's unknown exactly which Protocol uses which [[SPL_services|Generation]], though presumably 2/4 is Generation 0x0/0x1? lcs (local-content-share) uses Generation 0x1, while Mario Kart World uses 0x0.

[S2] Protocol2 and Protocol4 appear to be identical to Protocol3 except for using [[SPL_services|Ounce]] keys (?). It's unknown exactly which Protocol uses which [[SPL_services|Generation]], though presumably 2/4 is Generation 0x0/0x1? lcs (local-content-share) uses Generation 0x1, while Mario Kart World uses 0x0.

[S2] Keys are generated by passing the SHA256 hash as the KeySource to the relevant [[SPL_services|spl:ldn]] command with the above Generation, with the full hash being passed to the Ounce cmds. Only the first 0x10-bytes of the output key is used, since AES-128 is used even with Ounce.

On NX, the Protocol [[#SetProtocol|permission-bitmask]] is always set to 0xA (1 and 3). On Ounce, all services have this set to 0x1E, except for one which has it set to 0xA (which is likely the one for S1-compat). 0x1E allows additional protocol values 2 and 4.

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| 0x0 || 0x10 || [[#NetworkInfo]]+0x50

|-

| 0x10 || 0x8 || [[#NetworkInfo]]+0x478

| 0x10 || 0x8 || [[#NetworkInfo]]+0x478 [S2] The Station seems to verify that this is 0 when the Challenge is unused (ldn:s)? Throws an error if set before connecting to an [[#Protocol|Ounce]] network.

|-

| 0x18 || 0x1 || [[#NetworkInfo]]+0x60

Line 2,165:

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[S2] Access to btm and spl:mig were replaced with bt:sys and spl:ldn.

[S2] Various objects/state have the same size/layout as S1, generally?(Other than IPC-related differences) There's also stack differences.

== Code-region Memory Layout ==

=== S2 20.5.0 ===

This is the codebin-region layout for S2 ldn 20.5.0, exact starting version unknown. BuildId is "DC456FA4...".

The on-NX note is for the equivalent memregion location/size, memregion-size/contents compared to NX may vary.

Total size is 0x24F000-bytes.

{| class="wikitable" border="1"

|-

! Offset

! Size

! Permissions

! Description

|-

| 0x0 || 0xE1000 || --X || .text

|-

| 0xE1000 || 0x3D000 || R-- || RO-region

|-

| 0x11E000 || 0x3A000 || RW || On NX this is at 0xEF000. The main ExpHeap is at +0x2000, on NX it's at +0x1000.

|-

| 0x158000 || 0x8000 || non-RW || On NX this is at 0x123000.

|-

| 0x160000 || 0x8000 || RW || On NX this is at 0x12B000.

|-

| 0x168000 || 0xF000 || non-RW || On NX this is at 0x139000.

|-

| 0x177000 || 0x3000 || RW || On NX this is at 0x13F000.

|-

| 0x17A000 || 0x24000 || non-RW || On NX this is at 0x14B000.

|-

| 0x19E000 || 0x4E000 || RW || On NX this is at 0x16F000.

|-

| 0x1EC000 || 0x2000 || -- || On NX this is at 0x1BD000.

|-

| 0x1EE000 || 0x2000 || {accessible} || On NX this is at 0x1BF000.

|-

| 0x1EF000 || 0x5000 || -- || On NX this is at 0x1E2000.

|-

| 0x1F4000 || 0x21000 || {accessible} || On NX this is at 0x1EA000.

|-

| 0x218000 || 0x8000 || -- ||

|-

| 0x220000 || 0x2F000 || {accessible}

|}

[[Category:Services]]

@@ Line 540: / Line 540: @@
 [18.0.0+] The sdknso uses SessionManager with this, where the additional session-count is 0x3.
-[S2] There appears to be 2 ldn:u services, this appears to be for having separate [[#Protocol|Protocol]] permissions for NX and Ounce games.
+[S2] There appears to be 2 ldn:u services, this appears to be for having separate [[#Protocol|Protocol]] permissions for NX and Ounce games. The Creator object has the same vtable for both of these. However the vtable for IUserLocalCommunicationService appears to be larger even with NX, which likely indicates there's new commands? There also appears to be 4 additional max-sessions allocated to ldn*, this is probably for one of these ldn:u services?
 {| class="wikitable" border="1"
@@ Line 1,481: / Line 1,481: @@
 There's system-titles which [[20.0.0|use]] SetProtocol. While there's game(s) which use SetProtocol, there's no known (?) games using Protocol3 (excluding GameShare which is system).
-Protocol2 and Protocol4 appear to be identical to Protocol3 except for using [[SPL_services|Ounce]] keys (?), with AES-128. It's unknown exactly which Protocol uses which [[SPL_services|Generation]], though presumably 2/4 is Generation 0x0/0x1? lcs (local-content-share) uses Generation 0x1, while Mario Kart World uses 0x0.
+[S2] Protocol2 and Protocol4 appear to be identical to Protocol3 except for using [[SPL_services|Ounce]] keys (?). It's unknown exactly which Protocol uses which [[SPL_services|Generation]], though presumably 2/4 is Generation 0x0/0x1? lcs (local-content-share) uses Generation 0x1, while Mario Kart World uses 0x0.
+[S2] Keys are generated by passing the SHA256 hash as the KeySource to the relevant [[SPL_services|spl:ldn]] command with the above Generation, with the full hash being passed to the Ounce cmds. Only the first 0x10-bytes of the output key is used, since AES-128 is used even with Ounce.
 On NX, the Protocol [[#SetProtocol|permission-bitmask]] is always set to 0xA (1 and 3). On Ounce, all services have this set to 0x1E, except for one which has it set to 0xA (which is likely the one for S1-compat). 0x1E allows additional protocol values 2 and 4.
@@ Line 1,887: / Line 1,889: @@
 | 0x0 || 0x10 || [[#NetworkInfo]]+0x50
 |-
-| 0x10 || 0x8 || [[#NetworkInfo]]+0x478
+| 0x10 || 0x8 || [[#NetworkInfo]]+0x478 [S2] The Station seems to verify that this is 0 when the Challenge is unused (ldn:s)? Throws an error if set before connecting to an [[#Protocol|Ounce]] network.
 |-
 | 0x18 || 0x1 || [[#NetworkInfo]]+0x60
@@ Line 2,165: / Line 2,167: @@
 [S2] Access to btm and spl:mig were replaced with bt:sys and spl:ldn.
+[S2] Various objects/state have the same size/layout as S1, generally?(Other than IPC-related differences) There's also stack differences.
+== Code-region Memory Layout ==
+=== S2 20.5.0 ===
+This is the codebin-region layout for S2 ldn 20.5.0, exact starting version unknown. BuildId is "DC456FA4...".
+The on-NX note is for the equivalent memregion location/size, memregion-size/contents compared to NX may vary.
+Total size is 0x24F000-bytes.
+{| class="wikitable" border="1"
+|-
+! Offset
+! Size
+! Permissions
+! Description
+|-
+| 0x0 || 0xE1000 || --X || .text
+|-
+| 0xE1000 || 0x3D000 || R-- || RO-region
+|-
+| 0x11E000 || 0x3A000 || RW || On NX this is at 0xEF000. The main ExpHeap is at +0x2000, on NX it's at +0x1000.
+|-
+| 0x158000 || 0x8000 || non-RW || On NX this is at 0x123000.
+|-
+| 0x160000 || 0x8000 || RW || On NX this is at 0x12B000.
+|-
+| 0x168000 || 0xF000 || non-RW || On NX this is at 0x139000.
+|-
+| 0x177000 || 0x3000 || RW || On NX this is at 0x13F000.
+|-
+| 0x17A000 || 0x24000 || non-RW || On NX this is at 0x14B000.
+|-
+| 0x19E000 || 0x4E000 || RW || On NX this is at 0x16F000.
+|-
+| 0x1EC000 || 0x2000 || -- || On NX this is at 0x1BD000.
+|-
+| 0x1EE000 || 0x2000 || {accessible} || On NX this is at 0x1BF000.
+|-
+| 0x1EF000 || 0x5000 || -- || On NX this is at 0x1E2000.
+|-
+| 0x1F4000 || 0x21000 || {accessible} || On NX this is at 0x1EA000.
+|-
+| 0x218000 || 0x8000 || -- ||
+|-
+| 0x220000 || 0x2F000 || {accessible}
+|}
 [[Category:Services]]