Nintendo Switch Brew

Changes

CNMT (view source)

Revision as of 17:09, 22 May 2019

4,993 bytes added ,  17:09, 22 May 2019
m
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>.
     −
It starts with a header:
+
There's at least 9 different filenames used for ".cnmt":
 +
* "Application_{lower-case hex titleID}.cnmt"
 +
* "Patch_{lower-case hex titleID}.cnmt"
 +
* "AddOnContent_{lower-case hex titleID}.cnmt"
 +
* "SystemUpdate_{hex titleID}.cnmt"
 +
* "SystemData_{lower-case hex titleID}.cnmt"
 +
* "SystemProgram_{lower-case hex titleID}.cnmt"
 +
* "BootImagePackage_{lower-case hex titleID}.cnmt"
 +
* "BootImagePackageSafe_{lower-case hex titleID}.cnmt"
 +
* "Delta_{lower-case hex titleID}.cnmt"
 +
 
 +
== Header ==
 
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
 
|-
 
|-
Line 10: Line 20:  
|-
 
|-
 
| 0x0
 
| 0x0
−
| 8
+
| 0x8
 
| Title ID
 
| Title ID
 
|-
 
|-
 
| 0x8
 
| 0x8
−
| 4
+
| 0x4
−
|
+
| Version
 
|-
 
|-
 
| 0xC
 
| 0xC
−
| 1
+
| 0x1
−
| Type (see [[Content_Manager_services#Title_Types|Title Types]])
+
| [[NCM_services#Title_Types|Meta Type]]
 
|-
 
|-
 
| 0xD
 
| 0xD
−
| 1
+
| 0x1
−
|
+
| Unused
 
|-
 
|-
 
| 0xE
 
| 0xE
−
| 2
+
| 0x2
−
| Offset to table relative to the end of this 0x20-byte header.
+
| Extended Header Size
 
|-
 
|-
 
| 0x10
 
| 0x10
−
| 2
+
| 0x2
−
| Number of entries
+
| Content Count
 
|-
 
|-
 
| 0x12
 
| 0x12
−
| 14
+
| 0x2
−
|
+
| Content Meta Count
 +
|-
 +
| 0x14
 +
| 0x1
 +
| Attributes (0=None, 1=IncludesExFatDriver, 2=Rebootless)
 +
|-
 +
| 0x15
 +
| 0x3
 +
| Unused
 +
|-
 +
| 0x18
 +
| 0x4
 +
| Required Download System Version
 +
|-
 +
| 0x1C
 +
| 0x4
 +
| Unused
 +
|}
 +
 
 +
== SystemUpdate Extended Header ==
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x4
 +
| Extended Data Size
 +
|}
 +
 
 +
== Application Extended Header ==
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x8
 +
| Patch ID
 +
|-
 +
| 0x8
 +
| 0x4
 +
| Required System Version
 +
|-
 +
| 0xC
 +
| 0x4
 +
| Unused
 +
|}
 +
 
 +
== Patch Extended Header ==
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x8
 +
| Application ID
 +
|-
 +
| 0x8
 +
| 0x4
 +
| Required System Version
 +
|-
 +
| 0xC
 +
| 0x4
 +
| Extended Data Size
 +
|-
 +
| 0x10
 +
| 0x8
 +
| Unused
 +
|}
 +
 
 +
== AddOnContent Extended Header ==
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x8
 +
| Application ID
 +
|-
 +
| 0x8
 +
| 0x4
 +
| Required Application Version
 +
|-
 +
| 0xC
 +
| 0x4
 +
| Unused
 +
|}
 +
 
 +
== Delta Extended Header ==
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x8
 +
| Application ID
 +
|-
 +
| 0x8
 +
| 0x4
 +
| Extended Data Size
 +
|-
 +
| 0xC
 +
| 0x4
 +
| Unused
 
|}
 
|}
   −
An optional header can follow, depending on the title type.
+
== Content Records ==
   −
== Application header ==
   
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
 
|-
 
|-
Line 46: Line 167:  
! Size
 
! Size
 
! Description
 
! Description
 +
|-
 +
| 0x0
 +
| 0x20
 +
| Hash
 
|-
 
|-
 
| 0x20
 
| 0x20
−
| 8
+
| 0x10
−
| Patch title ID
+
| Content ID
 +
|-
 +
| 0x30
 +
| 0x6
 +
| Size
 +
|-
 +
| 0x36
 +
| 0x1
 +
| Content Type (0=Meta, 1=Program, 2=Data, 3=Control, 4=[[Internet_Browser|HtmlDocument]], 5=[[Internet_Browser|LegalInformation]], 6=[[NCA_Format|DeltaFragment]])
 +
|-
 +
| 0x37
 +
| 0x1
 +
| Id Offset
 +
|}
 +
 
 +
== Content Meta Records ==
 +
 
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x8
 +
| Title ID
 +
|-
 +
| 0x8
 +
| 0x4
 +
| Version
 +
|-
 +
| 0xC
 +
| 0x1
 +
| [[NCM_services#Title_Types|Meta Type]]
 +
|-
 +
| 0xD
 +
| 0x1
 +
| Attributes (0=None, 1=IncludesExFatDriver, 2=Rebootless)
 +
|-
 +
| 0xE
 +
| 0x2
 +
| Unused
 +
|}
 +
 
 +
This is used for SystemUpdate, see here: [[NCM_services#ReadEntryMetaRecords]].
 +
 
 +
== SystemUpdate Extended Data ==
 +
 
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x4
 +
| Version
 +
|-
 +
| 0x4
 +
| 0x4
 +
| Variation Count
 +
|-
 +
| 0x8
 +
| 0x4
 +
| Firmware Variation
 +
|-
 +
| 0xC
 +
| 0x1C * Variation Count
 +
| Unused
 +
|}
 +
 
 +
== Patch Extended Data ==
 +
 
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x4
 +
| History Count
 +
|-
 +
| 0x4
 +
| 0x4
 +
| Delta History Count
 +
|-
 +
| 0x8
 +
| 0x4
 +
| Delta Count
 +
|-
 +
| 0xC
 +
| 0x4
 +
| Fragment Set Count
 +
|-
 +
| 0x10
 +
| 0x4
 +
| History Content Count
 +
|-
 +
| 0x14
 +
| 0x4
 +
| Delta Content Count
 +
|-
 +
| 0x18
 +
| 0x4
 +
| Unused
 +
|-
 +
| 0x1C
 +
| 0x38 * History Count
 +
| [[CNMT#History_Header|History Headers]]
 +
|-
 +
|
 +
| 0x28 * Delta History Count
 +
| [[CNMT#Delta_History|Delta Histories]]
 +
|-
 +
|
 +
| 0x28 * Delta Count
 +
| [[CNMT#Delta_Header|Delta Headers]]
 +
|-
 +
|
 +
| 0x34 * Fragment Set Count
 +
| [[CNMT#Fragment_Set|Fragment Sets]]
 +
|-
 +
|
 +
| 0x18 * History Content Count
 +
| [[CNMT#Content_Records|History Content Records (Content Records without the Hash entry)]]
 +
|-
 +
|
 +
| 0x38 * Delta Content Count
 +
| [[CNMT#Content_Records|Delta Content Records]]
 
|-
 
|-
−
| 0x28
  −
| 8
   
|
 
|
 +
| 0x4 * Fragment Indicator Count (Fragment Set)
 +
| [[CNMT#Fragment_Indicator|Fragment Indicators]]
 
|}
 
|}
   −
== Patch header ==
+
=== History Header ===
 +
 
 
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
 
|-
 
|-
Line 63: Line 318:  
! Description
 
! Description
 
|-
 
|-
 +
| 0x0
 +
| 0x10
 +
| [[CNMT#Content_Meta_Records|Content Meta Record]]
 +
|-
 +
| 0xC
 +
| 0x1
 +
| [[NCM_services#Title_Types|Meta Type]]
 +
|-
 +
| 0xD
 +
| 0x1
 +
| Attributes (0=None, 1=IncludesExFatDriver, 2=Rebootless)
 +
|-
 +
| 0xE
 +
| 0x2
 +
| Unused
 +
|-
 +
| 0x10
 
| 0x20
 
| 0x20
−
| 8
+
| Digest
−
| Original title ID
+
|-
 +
| 0x30
 +
| 0x2
 +
| Content Info Count
 
|-
 
|-
−
| 0x28
+
| 0x32
−
| 8
+
| 0x6
−
|
+
| Unused
 
|}
 
|}
   −
== Add-on content header ==
+
=== Delta History ===
 +
 
 
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
 
|-
 
|-
Line 78: Line 354:  
! Size
 
! Size
 
! Description
 
! Description
 +
|-
 +
| 0x0
 +
| 0x8
 +
| Source Patch ID
 +
|-
 +
| 0x8
 +
| 0x8
 +
| Destination Patch ID
 +
|-
 +
| 0x10
 +
| 0x4
 +
| Source Version
 +
|-
 +
| 0x14
 +
| 0x4
 +
| Destination Version
 +
|-
 +
| 0x18
 +
| 0x8
 +
| Download Size
 
|-
 
|-
 
| 0x20
 
| 0x20
 +
| 0x8
 +
| Unused
 +
|}
 +
 +
=== Delta Header ===
 +
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x8
 +
| Source Patch ID
 +
|-
 +
| 0x8
 
| 8
 
| 8
−
| Application title ID
+
| Destination Patch ID
 +
|-
 +
| 0x10
 +
| 0x4
 +
| Source Version
 +
|-
 +
| 0x14
 +
| 0x4
 +
| Destination Version
 +
|-
 +
| 0x18
 +
| 0x2
 +
| Fragment Set Count
 +
|-
 +
| 0x1A
 +
| 0x6
 +
| Unused
 +
|-
 +
| 0x20
 +
| 0x2
 +
| Content Info Count
 
|-
 
|-
−
| 0x28
+
| 0x22
−
| 8
+
| 0x6
−
|
+
| Unused
 
|}
 
|}
   −
== Content records ==
+
=== Fragment Set ===
−
 
  −
Each entry is 0x38 bytes:
      
{| class="wikitable" border="1"
 
{| class="wikitable" border="1"
Line 99: Line 430:  
|-
 
|-
 
| 0x0
 
| 0x0
−
| 32
+
| 0x10
−
| Hash
+
| Source Content ID
 +
|-
 +
| 0x10
 +
| 0x10
 +
| Destination Content ID
 
|-
 
|-
 
| 0x20
 
| 0x20
−
| 16
+
| 0x6
−
| NcaId [same as first 16-bytes of hash]
+
| Source Size
 +
|-
 +
| 0x26
 +
| 0x6
 +
| Destination Size
 +
|-
 +
| 0x2C
 +
| 0x2
 +
| Fragment Indicator Count
 +
|-
 +
| 0x2E
 +
| 0x1
 +
| Content Type (0=Meta, 1=Program, 2=Data, 3=Control, 4=[[Internet_Browser|HtmlDocument]], 5=[[Internet_Browser|LegalInformation]], 6=[[NCA_Format|DeltaFragment]])
 +
|-
 +
| 0x2F
 +
| 0x1
 +
| Update Type (0=ApplyAsDelta, 1=Overwrite, 2=Create)
 
|-
 
|-
 
| 0x30
 
| 0x30
−
| 6
+
| 0x4
−
| Size, same as the output from [[Content_Manager_services#GetEntrySize]].
+
| Unused
 +
|}
 +
 
 +
=== Fragment Indicator ===
 +
 
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x2
 +
| Content Info Index
 +
|-
 +
| 0x2
 +
| 0x2
 +
| Fragment Index
 +
|}
 +
 
 +
== Delta Extended Data ==
 +
 
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x8
 +
| Source Patch ID
 +
|-
 +
| 0x8
 +
| 0x8
 +
| Destination Patch ID
 +
|-
 +
| 0x10
 +
| 0x4
 +
| Source Version
 +
|-
 +
| 0x14
 +
| 0x4
 +
| Destination Version
 +
|-
 +
| 0x18
 +
| 0x2
 +
| Fragment Set Count
 +
|-
 +
| 0x1A
 +
| 0x6
 +
| Unused
 
|-
 
|-
−
| 0x36
+
| 0x20
−
| 1
+
| 0x34 * Fragment Set Count
−
| Type (0=meta, 1=program, 2=data, 3=control, 4=offline-manual [[Internet_Browser|html]], 5=legal [[Internet_Browser|html]])
+
| [[CNMT#Fragment_Set|Fragment Sets]]
 
|-
 
|-
−
| 0x37
  −
| 1
   
|
 
|
 +
| 0x4 * Fragment Indicator Count (Fragment Set)
 +
| [[CNMT#Fragment_Indicator|Fragment Indicators]]
 +
|}
 +
 +
== Digest ==
 +
 +
Always found at the end of the file.
 +
 +
{| class="wikitable" border="1"
 +
|-
 +
! Offset
 +
! Size
 +
! Description
 +
|-
 +
| 0x0
 +
| 0x20
 +
| Digest
 
|}
 
|}
Liam
23

edits

Retrieved from "https://switchbrew.org/wiki/Special:MobileDiff/1055...6944"