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CNMT (view source)

Revision as of 21:27, 15 October 2023

7,349 bytes added ,  21:27, 15 October 2023
no edit summary
Line 1: Line 1: −
= Metadata file =
+
This is the metadata file that ends in <code>".cnmt{.nca}"</code> or <code>"meta0.ncd"</code>. This seems to replace the TMD format.
−
This is the file that ends in <code>".cnmt.nca"</code> or <code>"meta0.ncd"</code>.
+
 
 +
The official name for CNMT is "PackagedContentMeta".
 +
 
 +
= PackagedContentMetaHeader =
 +
This is "nn::ncm::PackagedContentMetaHeader".
   −
It starts with a header:
   
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
 
|-
 
|-
Line 10: Line 13:  
|-
 
|-
 
| 0x0
 
| 0x0
−
| 8
+
| 0x8
−
| Title ID
+
| Id
 
|-
 
|-
 
| 0x8
 
| 0x8
−
| 4
+
| 0x4
−
|
+
| Version
 
|-
 
|-
 
| 0xC
 
| 0xC
−
| 1
+
| 0x1
−
| Type (see [[Content_Manager_services#Title_Types|Title Types]])
+
| [[NCM_services#ContentMetaType|ContentMetaType]]
 
|-
 
|-
 
| 0xD
 
| 0xD
−
| 1
+
| 0x1
−
|
+
| [17.0.0+] [[NCM_services#ContentMetaPlatform|ContentMetaPlatform]] ([1.0.0-16.1.0] Reserved)
 
|-
 
|-
 
| 0xE
 
| 0xE
−
| 2
+
| 0x2
−
| Offset to table
+
| ExtendedHeaderSize
 
|-
 
|-
 
| 0x10
 
| 0x10
−
| 2
+
| 0x2
−
| Number of entries
+
| ContentCount
 
|-
 
|-
 
| 0x12
 
| 0x12
−
| 14
+
| 0x2
−
|
+
| ContentMetaCount
 +
|-
 +
| 0x14
 +
| 0x1
 +
| ContentMetaAttributes (0=None, 1=IncludesExFatDriver, 2=Rebootless, 4=Compacted)
 +
|-
 +
| 0x15
 +
| 0x3
 +
| Reserved
 +
|-
 +
| 0x18
 +
| 0x4
 +
| RequiredDownloadSystemVersion
 +
|-
 +
| 0x1C
 +
| 0x4
 +
| Reserved
 +
|}
 +
 
 +
= SystemUpdateMetaExtendedHeader =
 +
This is "nn::ncm::SystemUpdateMetaExtendedHeader".
 +
 
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x4
 +
| ExtendedDataSize
 +
|}
 +
 
 +
= ApplicationMetaExtendedHeader =
 +
This is "nn::ncm::ApplicationMetaExtendedHeader".
 +
 
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x8
 +
| PatchId
 +
|-
 +
| 0x8
 +
| 0x4
 +
| RequiredSystemVersion
 +
|-
 +
| 0xC
 +
| 0x4
 +
| RequiredApplicationVersion
 
|}
 
|}
   −
An optional header can follow, depending on the title type.
+
= PatchMetaExtendedHeader =
 +
This is "nn::ncm::PatchMetaExtendedHeader".
   −
== Application header ==
   
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
 
|-
 
|-
Line 47: Line 102:  
! Description
 
! Description
 
|-
 
|-
 +
| 0x0
 +
| 0x8
 +
| ApplicationId
 +
|-
 +
| 0x8
 +
| 0x4
 +
| RequiredSystemVersion
 +
|-
 +
| 0xC
 +
| 0x4
 +
| ExtendedDataSize
 +
|-
 +
| 0x10
 +
| 0x8
 +
| Reserved
 +
|}
 +
 +
= AddOnContentMetaExtendedHeader =
 +
This is "nn::ncm::AddOnContentMetaExtendedHeader".
 +
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x8
 +
| ApplicationId
 +
|-
 +
| 0x8
 +
| 0x4
 +
| RequiredApplicationVersion
 +
|-
 +
| 0xC
 +
| 0x1
 +
| [15.0.0+] ContentAccessibilities ([1.0.0-14.1.2] Reserved)
 +
|-
 +
| 0xD
 +
| 0x3
 +
| Reserved
 +
|-
 +
| 0x10
 +
| 0x8
 +
| [15.0.0+] DataPatchId
 +
|}
 +
 +
= DeltaMetaExtendedHeader =
 +
This is "nn::ncm::DeltaMetaExtendedHeader".
 +
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x8
 +
| ApplicationId
 +
|-
 +
| 0x8
 +
| 0x4
 +
| ExtendedDataSize
 +
|-
 +
| 0xC
 +
| 0x4
 +
| Reserved
 +
|}
 +
 +
= DataPatchMetaExtendedHeader =
 +
This is "nn::ncm::DataPatchMetaExtendedHeader".
 +
 +
This was added with [15.0.0+].
 +
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x8
 +
| DataId
 +
|-
 +
| 0x8
 +
| 0x8
 +
| ApplicationId
 +
|-
 +
| 0x10
 +
| 0x4
 +
| RequiredApplicationVersion
 +
|-
 +
| 0x14
 +
| 0x4
 +
| ExtendedDataSize
 +
|-
 +
| 0x18
 +
| 0x8
 +
| Reserved
 +
|}
 +
 +
= PackagedContentInfo =
 +
This is "nn::ncm::PackagedContentInfo".
 +
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 
| 0x20
 
| 0x20
−
| 8
+
| Hash (SHA256 of the referenced content)
−
| Patch title ID
+
|-
 +
| 0x20
 +
| 0x10
 +
| ContentId
 +
|-
 +
| 0x30
 +
| [15.0.0+] 0x5 ([1.0.0-14.1.2] 0x6)
 +
| Size
 +
|-
 +
| 0x35
 +
| 0x1
 +
| [15.0.0+] ContentAttributes
 +
|-
 +
| 0x36
 +
| 0x1
 +
| ContentType (0=Meta, 1=Program, 2=Data, 3=Control, 4=[[Internet_Browser|HtmlDocument]], 5=[[Internet_Browser|LegalInformation]], 6=[[NCA_Format|DeltaFragment]])
 +
|-
 +
| 0x37
 +
| 0x1
 +
| IdOffset
 +
|}
 +
 
 +
= ContentMetaInfo =
 +
This is "nn::ncm::ContentMetaInfo".
 +
 
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x8
 +
| Id
 +
|-
 +
| 0x8
 +
| 0x4
 +
| Version
 +
|-
 +
| 0xC
 +
| 0x1
 +
| [[NCM_services#ContentMetaType|ContentMetaType]]
 +
|-
 +
| 0xD
 +
| 0x1
 +
| ContentMetaAttributes (0=None, 1=IncludesExFatDriver, 2=Rebootless, 4=Compacted)
 +
|-
 +
| 0xE
 +
| 0x2
 +
| Reserved
 +
|}
 +
 
 +
This is used for SystemUpdate, see here: [[NCM_services#ReadEntryMetaRecords]].
 +
 
 +
= SystemUpdateMetaExtendedData =
 +
This is "nn::ncm::SystemUpdateMetaExtendedData".
 +
 
 +
If the Version field is 1, the format is:
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x4
 +
| Version
 +
|-
 +
| 0x4
 +
| 0x4
 +
| VariationCount
 +
|-
 +
| 0x8
 +
| 0x20 * VariationCount
 +
| [[#FirmwareVariationInfo|FirmwareVariationInfo]] (Version 1)
 +
|}
 +
 
 +
If the Version field is 2, the format is:
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x4
 +
| Version
 +
|-
 +
| 0x4
 +
| 0x4
 +
| VariationCount
 +
|-
 +
| 0x8
 +
| 0x4 * VariationCount
 +
| FirmwareVariationId
 +
|-
 +
| Variable
 +
| 0x20 * VariationCount
 +
| [[#FirmwareVariationInfo|FirmwareVariationInfo]] (Version 2)
 +
|-
 +
| Variable
 +
| 0x10 * MetaCount (from [[#FirmwareVariationInfo|FirmwareVariationInfo]] (Version 2))
 +
| [[#ContentMetaInfo|ContentMetaInfo]] (if ReferToBase is False)
 +
|}
 +
 
 +
== FirmwareVariationInfo ==
 +
This is "FirmwareVariationInfo ".
 +
 
 +
If the Version field is 1, the format is:
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x4
 +
| FirmwareVariationId
 +
|-
 +
| 0x4
 +
| 0x1C
 +
| Reserved
 +
|}
 +
 
 +
If the Version field is 2, the format is:
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x1
 +
| ReferToBase (0=False, 1=True)
 +
|-
 +
| 0x1
 +
| 0x3
 +
| Reserved
 +
|-
 +
| 0x4
 +
| 0x4
 +
| MetaCount
 +
|-
 +
| 0x8
 +
| 0x18
 +
| Reserved
 +
|}
 +
 
 +
= PatchMetaExtendedData =
 +
This is "nn::ncm::PatchMetaExtendedData".
 +
 
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x4
 +
| PatchHistoryHeaderCount
 +
|-
 +
| 0x4
 +
| 0x4
 +
| PatchDeltaHistoryCount
 +
|-
 +
| 0x8
 +
| 0x4
 +
| PatchDeltaHeaderCount
 +
|-
 +
| 0xC
 +
| 0x4
 +
| FragmentSetCount
 +
|-
 +
| 0x10
 +
| 0x4
 +
| PatchHistoryContentInfoCount
 +
|-
 +
| 0x14
 +
| 0x4
 +
| PatchDeltaPackagedContentInfoCount
 +
|-
 +
| 0x18
 +
| 0x4
 +
| Reserved
 +
|-
 +
| 0x1C
 +
| 0x38 * PatchHistoryHeaderCount
 +
| [[#PatchHistoryHeader|PatchHistoryHeader]]
 +
|-
 +
| Variable
 +
| 0x28 * PatchDeltaHistoryCount
 +
| [[#PatchDeltaHistory|PatchDeltaHistory]]
 +
|-
 +
| Variable
 +
| 0x28 * PatchDeltaHeaderCount
 +
| [[#PatchDeltaHeader|PatchDeltaHeader]]
 +
|-
 +
| Variable
 +
| 0x34 * FragmentSetCount
 +
| [[#FragmentSet|FragmentSet]]
 +
|-
 +
| Variable
 +
| 0x18 * PatchHistoryContentInfoCount
 +
| [[#PackagedContentInfo|PatchHistoryContentInfo]] ([[#PackagedContentInfo|PackagedContentInfo]] without the Hash entry)
 +
|-
 +
| Variable
 +
| 0x38 * PatchDeltaPackagedContentInfoCount
 +
| [[#PackagedContentInfo|PatchDeltaPackagedContentInfo]]
 +
|-
 +
| Variable
 +
| 0x4 * FragmentIndicatorCount (from [[#FragmentSet|FragmentSet]])
 +
| [[#FragmentIndicator|FragmentIndicator]]
 +
|}
 +
 
 +
== PatchHistoryHeader ==
 +
This is "nn::ncm::PatchHistoryHeader".
 +
 
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x10
 +
| ContentMetaKey
 +
|-
 +
| 0x10
 +
| 0x20
 +
| Digest
 +
|-
 +
| 0x30
 +
| 0x2
 +
| ContentInfoCount
 
|-
 
|-
−
| 0x28
+
| 0x32
−
| 8
+
| 0x6
−
|
+
| Reserved
 
|}
 
|}
   −
== Patch header ==
+
== PatchDeltaHistory ==
 +
This is "nn::ncm::PatchDeltaHistory".
 +
 
 
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
 
|-
 
|-
Line 62: Line 463:  
! Size
 
! Size
 
! Description
 
! Description
 +
|-
 +
| 0x0
 +
| 0x8
 +
| SourcePatchId
 +
|-
 +
| 0x8
 +
| 0x8
 +
| DestinationPatchId
 +
|-
 +
| 0x10
 +
| 0x4
 +
| SourceVersion
 +
|-
 +
| 0x14
 +
| 0x4
 +
| DestinationVersion
 +
|-
 +
| 0x18
 +
| 0x8
 +
| DownloadSize
 
|-
 
|-
 
| 0x20
 
| 0x20
 +
| 0x8
 +
| Reserved
 +
|}
 +
 +
== PatchDeltaHeader ==
 +
This is "nn::ncm::PatchDeltaHeader".
 +
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x8
 +
| SourcePatchId
 +
|-
 +
| 0x8
 
| 8
 
| 8
−
| Original title ID
+
| DestinationPatchId
 +
|-
 +
| 0x10
 +
| 0x4
 +
| SourceVersion
 
|-
 
|-
−
| 0x28
+
| 0x14
−
| 8
+
| 0x4
−
|
+
| DestinationVersion
 +
|-
 +
| 0x18
 +
| 0x2
 +
| FragmentSetCount
 +
|-
 +
| 0x1A
 +
| 0x6
 +
| Reserved
 +
|-
 +
| 0x20
 +
| 0x2
 +
| ContentInfoCount
 +
|-
 +
| 0x22
 +
| 0x6
 +
| Reserved
 
|}
 
|}
   −
== Add-on content header ==
+
== FragmentSet ==
 +
This is "nn::ncm::FragmentSet".
 +
 
 
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
 
|-
 
|-
Line 78: Line 539:  
! Size
 
! Size
 
! Description
 
! Description
 +
|-
 +
| 0x0
 +
| 0x10
 +
| SourceContentId
 +
|-
 +
| 0x10
 +
| 0x10
 +
| DestinationContentId
 
|-
 
|-
 
| 0x20
 
| 0x20
−
| 8
+
| 0x6
−
| Application title ID
+
| SourceSize
 +
|-
 +
| 0x26
 +
| 0x6
 +
| DestinationSize
 +
|-
 +
| 0x2C
 +
| 0x2
 +
| FragmentIndicatorCount
 +
|-
 +
| 0x2E
 +
| 0x1
 +
| FragmentTargetContentType (0=Meta, 1=Program, 2=Data, 3=Control, 4=[[Internet_Browser|HtmlDocument]], 5=[[Internet_Browser|LegalInformation]], 6=[[NCA_Format|DeltaFragment]])
 +
|-
 +
| 0x2F
 +
| 0x1
 +
| UpdateType (0=ApplyAsDelta, 1=Overwrite, 2=Create)
 
|-
 
|-
−
| 0x28
+
| 0x30
−
| 8
+
| 0x4
−
|
+
| Reserved
 
|}
 
|}
   −
== Content records ==
+
== FragmentIndicator ==
 +
This is "nn::ncm::FragmentIndicator".
 +
 
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x2
 +
| ContentInfoIndex
 +
|-
 +
| 0x2
 +
| 0x2
 +
| FragmentIndex
 +
|}
   −
Each entry is 0x38 bytes:
+
= DeltaMetaExtendedData =
 +
This is "nn::ncm::DeltaMetaExtendedData".
    
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
Line 99: Line 601:  
|-
 
|-
 
| 0x0
 
| 0x0
−
| 32
+
| 0x8
−
| Hash
+
| SourcePatchId
 +
|-
 +
| 0x8
 +
| 0x8
 +
| DestinationPatchId
 +
|-
 +
| 0x10
 +
| 0x4
 +
| SourceVersion
 +
|-
 +
| 0x14
 +
| 0x4
 +
| DestinationVersion
 +
|-
 +
| 0x18
 +
| 0x2
 +
| FragmentSetCount
 +
|-
 +
| 0x1A
 +
| 0x6
 +
| Reserved
 
|-
 
|-
 
| 0x20
 
| 0x20
−
| 16
+
| 0x34 * FragmentSetCount
−
| NcaId [same as first 16-bytes of hash]
+
| [[#FragmentSet|FragmentSet]]
 
|-
 
|-
−
| 0x30
+
| Variable
−
| 6
+
| 0x4 * FragmentIndicatorCount (from [[#FragmentSet|FragmentSet]])
−
| Size
+
| [[#FragmentIndicator|FragmentIndicator]]
 +
|}
 +
 
 +
= Digest =
 +
{| class="wikitable" border="1"
 
|-
 
|-
−
| 0x36
+
! Offset
−
| 1
+
! Size
−
| Type (0=meta, 1=program, 2=data, 3=control, 4=offline-manual [[Internet_Browser|html]], 5=legal [[Internet_Browser|html]])
+
! Description
 
|-
 
|-
−
| 0x37
+
| 0x0
−
| 1
+
| 0x20
−
|
+
| Digest
 
|}
 
|}
 +
 +
This is a SHA-256 hash always found at the end of the file. The hash is calculated over the CNMT file's contents, but this is only done for the development version of the file which results in its production version counterpart sharing the same hash value.
Retrieved from "https://switchbrew.org/wiki/Special:MobileDiff/1047...12551"

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