Alpine Linux - User contributions [en]

Talk:Apk spec

2023-03-02T19:08:36Z

Mårten:

{| class="wikitable"
|+ APK v2 package layout
|-
| '''Gzip Streams''' || apk-gzip-stream1 || apk-gzip-stream2 || apk-gzip-stream-3
|-
| '''Tar''' || apk-tar-segment-1 || apk-tar-segment-2 || apk-tarball
|-
| '''Blocks''' || [h1, d, ...] || [h, d, ...] || [h, d, h, d, ..., eof1, eof2 ]
|-
| '''Files''' || Package Signature || Control Data || Package Data
|}

{| class="wikitable"
|+ Index v2 layout
|-
| '''Gzip Streams''' || index-gzip-stream1 || index-gzip-stream2
|-
| '''Tar''' || index-tar-segment-1 || index-tar-segment-2
|-
| '''Blocks''' || [h1, d, ...] || [h, d, ..., eof1, eof2]
|-
| '''Files''' || Index Signature || Description and APKINDEX
|}

== gzip stream or gzip member ==

Gzip streams could perhaps be called members as the rfc1952 refers them to or the gzip documentation https://www.gnu.org/software/gzip/manual/html_node/Advanced-usage.html.

Talk:Apk spec

2023-03-02T18:59:35Z

Mårten: /* gzip stream or gzip member */ new section

{| class="wikitable"
|+ APK v2 package layout
|-
| '''Gzip Streams''' || apk-gzip-stream1 || apk-gzip-stream2 || apk-gzip-stream-3
|-
| '''Tar''' || apk-tar-segment-1 || apk-tar-segment-2 || apk-tarball
|-
| '''Blocks''' || [h1, d, ...] || [h, d, ...] || [h, d, h, d, ..., eof1, eof2 ]
|-
| '''Files''' || Package Signature || Control Data || Package Data
|}

{| class="wikitable"
|+ Index v2 layout
|-
| '''Gzip Streams''' || index-gzip-stream1 || index-gzip-stream2
|-
| '''Tar''' || index-tar-segment-1 || index-tar-segment-2
|-
| '''Blocks''' || [h1, d, ...] || [h, d, ..., eof1, eof2]
|-
| '''Files''' || Index Signature || Description and APKINDEX
|}

== gzip stream or gzip member ==

Gzip stream could perhaps be called members as the rfc1952 refers them to or the gzip documentation https://www.gnu.org/software/gzip/manual/html_node/Advanced-usage.html.

Talk:Apk spec

2022-12-11T17:31:30Z

Mårten:

Talk:Apk spec

2022-12-11T17:30:23Z

Mårten:

{| class="wikitable"
|+ APK v2 package layout
|-
| '''Gzip Streams''' || apk-gzip-stream1 || apk-gzip-stream2 || apk-gzip-stream-3
|-
| '''Tar''' || apk-tar-segment-1 || apk-tar-segment-2 || apk-tarball
|-
| '''Blocks''' || [h1, d, ...] || [h, d, ...] || [h, d, h, d, ..., e1, e2 ]
|-
| '''Files''' || Package Signature || Control Data || Package Data
|}

{| class="wikitable"
|+ Index v2 layout
|-
| '''Gzip Streams''' || index-gzip-stream1 || index-gzip-stream2
|-
| '''Tar''' || index-tar-segment-1 || index-tar-segment-2
|-
| '''Blocks''' || [h1, d, ...] || [h, d, ..., d1, d2]
|-
| '''Files''' || Index Signature || Description and APKINDEX
|}

Talk:Apk spec

2022-12-11T17:29:41Z

Mårten:

APK v2 package/index terminology

record/block
A 512 byte sequence of bytes, a block

h
header record/block

d
data record/block

e1, e2
EOF markers (two blocks 1024 bytes)

tar archive
A tar archive file, consiting of a set of files, a sequence of blocks ending with the eof marker blocks.

tar segment
A set of tar records, a sequence of tar records withouth a ending eof marker.

gzip stream
A stream is a sequence gzip compressed data, starting with a magic number, headers, body and an ending 8-byte trailer.

[ ... ]
A gzip stream containing blocks

concatenate
To link togther things in a series or chain. ie. concatenate.
Concatenate 3 gzip streams sequentially in a file.

package signature
A single file that is a binary signature over the concatenated (control + data) gzip streams

package signature file
DigestRSA-PKCS1v15(SHA1( apk-gzip-stream-2 ++ apk-gzip-stream-3), DER)

index signature file
DigestRSA-PKCS1v15(SHA1( index-gzip-stream-2), DER)

h
A tar header record block

h1
Signature file header, permission 0644, uid 0 and gid 0.

C: checksum
The SHA1 hash of the "Control data" gzip stream (gzip stream 2)

{| class="wikitable"
|+ APK v2 package layout
|-
| '''Gzip Streams''' || apk-gzip-stream1 || apk-gzip-stream2 || apk-gzip-stream-3
|-
| '''Tar''' || apk-tar-segment-1 || apk-tar-segment-2 || apk-tarball
|-
| '''Blocks''' || [h1, d, ...] || [h, d, ...] || [h, d, h, d, ..., e1, e2 ]
|-
| '''Files''' || Package Signature || Control Data || Package Data
|}

{| class="wikitable"
|+ Index v2 layout
|-
| '''Gzip Streams''' || index-gzip-stream1 || index-gzip-stream2
|-
| '''Tar''' || index-tar-segment-1 || index-tar-segment-2
|-
| '''Blocks''' || [h1, d, ...] || [h, d, ..., d1, d2]
|-
| '''Files''' || Index Signature || Description and APKINDEX
|}

Talk:Apk spec

2022-12-04T22:19:41Z

Mårten:

Talk:Apk spec

2022-12-04T22:18:16Z

Mårten:

- APK v2 package/index terminology

record A 512 byte sequence of bytes, a block
h Header record
d Data record
e1, e2 Eof markers (two blocks 1024 bytes)
tar archive A tar archive file, consiting of a set of files, a sequence of blocks ending with the eof marker blocks.
tar segment A set of tar records, a sequence of tar records withouth a ending eof marker.
gzip stream A stream is a sequence gzip compressed data, starting with a magic number, headers, body and an ending 8-byte trailer.
[ ... ] A gzip stream containing blocks
concatenate To link togther things in a series or chain. ie. concatenate.
Concatenate 3 gzip streams sequentially in a file.
package signature A single file that is a binary signature over the concatenated (control + data) gzip streams
package signature file DigestRSA-PKCS1v15(SHA1( apk-gzip-stream-2 ++ apk-gzip-stream-3), DER)
index signature file DigestRSA-PKCS1v15(SHA1( index-gzip-stream-2), DER)
h A tar header record block
h1 Signature file header, permission 0644, uid 0 and gid 0.
C: checksum The SHA1 hash of the "Control data" gzip stream (gzip stream 2)

{| class="wikitable"
|+ APK v2 package layout
|-
| '''Gzip Streams''' || apk-gzip-stream1 || apk-gzip-stream2 || apk-gzip-stream-3
|-
| '''Tar''' || apk-tar-segment-1 || apk-tar-segment-2 || apk-tarball
|-
| '''Blocks''' || [h1, d, ...] || [h, d, ...] || [h, d, h, d, ..., e1, e2 ]
|-
| '''Files''' || Package Signature || Control Data || Package Data
|}

{| class="wikitable"
|+ Index v2 layout
|-
| '''Gzip Streams''' || index-gzip-stream1 || index-gzip-stream2
|-
| '''Tar''' || index-tar-segment-1 || index-tar-segment-2
|-
| '''Blocks''' || [h1, d, ...] || [h, d, ..., d1, d2]
|-
| '''Files''' || Package Signature || Description and APKINDEX
|}

Talk:Apk spec

2022-12-04T22:17:52Z

Mårten:

{| class="wikitable"
|+ APK v2 package layout
|-
| '''Gzip Streams''' || apk-gzip-stream1 || apk-gzip-stream2 || apk-gzip-stream-3
|-
| '''Tar''' || apk-tar-segment-1 || apk-tar-segment-2 || apk-tarball
|-
| '''Blocks''' || [h1, d, ...] || [h, d, ...] || [h, d, h, d, ..., e1, e2 ]
|-
| '''Files''' || Package Signature || Control Data || Package Data
|}

{| class="wikitable"
|+ Index v2 layout
|-
| '''Gzip Streams''' || index-gzip-stream1 || index-gzip-stream2
|-
| '''Tar''' || index-tar-segment-1 || index-tar-segment-2
|-
| '''Blocks''' || [h1, d, ...] || [h, d, ..., d1, d2]
|-
| '''Files''' || Package Signature || Description and APKINDEX
|}

Talk:Apk spec

2022-12-04T22:17:37Z

Mårten:

{| class="wikitable"
|+ APK v2 package layout
|-
| '''Gzip Streams''' || apk-gzip-stream1 || apk-gzip-stream2 || apk-gzip-stream-3
|-
| '''Tar elements''' || apk-tar-segment-1 || apk-tar-segment-2 || apk-tarball
|-
| '''Blocks''' || [h1, d, ...] || [h, d, ...] || [h, d, h, d, ..., e1, e2 ]
|-
| '''Files''' || Package Signature || Control Data || Package Data
|}

{| class="wikitable"
|+ Index v2 layout
|-
| '''Gzip Streams''' || index-gzip-stream1 || index-gzip-stream2
|-
| '''Tar elements''' || index-tar-segment-1 || index-tar-segment-2
|-
| '''Blocks''' || [h1, d, ...] || [h, d, ..., d1, d2]
|-
| '''Files''' || Package Signature || Description and APKINDEX
|}

Talk:Apk spec

2022-12-04T22:15:51Z

Mårten:

Talk:Apk spec

2022-12-04T22:09:30Z

Mårten: Blanked the page

Talk:Apk spec

2022-12-04T20:57:51Z

Mårten:

Is a "tar record" in this document the same thing as a block ?
That is a sequence of 512 bytes ?

Talk:Apk spec

2022-12-04T20:57:38Z

Mårten:

Is a "tar record" in this document the same thing as a block ?
That is a sequence of 512 bytes ? Is it a "physical record" ?

Talk:Apk spec

2022-12-04T20:55:38Z

Mårten:

Is a "tar record" in this document the same thing as a block ?
That is a sequence of 512 bytes ?

Talk:Apk spec

2022-12-04T20:49:02Z

Mårten: Blanked the page

Talk:Apk spec

2022-12-04T20:39:38Z

Mårten: Created page with "Is a tar record the same as a file entry (as defined in https://www.gnu.org/software/tar/manual/html_node/Standard.html ? ) -"

Is a tar record the same as a file entry (as defined in https://www.gnu.org/software/tar/manual/html_node/Standard.html ? )
-

Apk spec

2022-04-01T21:21:24Z

Mårten:

{{Draft}}

This page is to describe and formalize the specification of 'apk' package manager.

= Database =

== Syntax ==
Starts on line number 800 in database.c, also check package.c

{| class="wikitable"
|-
! Field Character
! Description
! Field Data Format
! regex
! install-db
! package-index
|-
| A
| Architecture
| ?
| <nowiki>^A:\S+$</nowiki>
| ?
| yes
|-
| C
| Pull Checksum
| ?
| ?
| ?
| yes
|-
| D
| Pull Dependencies
| ?
| ?
| ?
| yes
|-
| F
| File Path
| ?
| ?
| ?
| no
|-
| I
| Package Installed Size
| ?
| ?
| ?
| yes
|-
| L
| License
| ?
| ?
| ?
| yes
|-
| M
| File Permissions
| ?
| ?
| ?
| no
|-
| P
| Package Name (no version, just the plain name)
| ?
| ?
| ?
| yes
|-
| R
| Get File
| ?
| ?
| ?
| no
|-
| S
| Package Size
| ?
| <nowiki>^S:(\d+)$</nowiki>
| ?
| yes
|-
| T
| Package Description
| ?
| ?
| ?
| yes
|-
| U
| Package URL
| ?
| ?
| ?
| yes
|-
| V
| Package Version
| ?
| ?
| ?
| yes
|-
| Z
| Pull Checksum
| ?
| ?
| ?
| no
|-
| a
| Check for file existence
| ?
| ?
| ?
| no
|-
| c
| Git commit of aport
| ?
| ?
| ?
| yes
|-
| k
| Provider priority
| ?
| ?
| ?
| yes
|-
| i
| Automatic Install Condition (aka Install IF)
| ?
| ?
| ?
| yes
|-
| m
| Maintainer
| ?
| ?
| ?
| yes
|-
| o
| Package Origin
| ?
| ?
| ?
| yes
|-
| q
| Replaces Priority
| ?
| ?
| ?
| no
|-
| p
| Package Provides
| ?
| ?
| ?
| yes
|-
| r
| Pull Dependencies
| ?
| ?
| ?
| no
|-
| s
| Get Tag Id
| ?
| ?
| ?
| no
|-
| t
| Build Timestamp (epoch)
| ?
| <nowiki>^t:(\d+)$</nowiki>
| ?
| yes
|}

= File Formats =

== Index ==

== Install DB ==

== Package File ==

= APKINDEX =

= Archive =

[[Category:Package Manager]]