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registry: support ipv6 addresses

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Current registry reference use a subset of dns and IPv4 addresses to
represent a registry domain.

Since registries are mostly compatible with rfc3986, that defines the
URI generic syntax, this adds support for IPv6 enclosed in squared
brackets based on the mentioned rfc.

The regexp is only expanded to match on IPv6 addreses enclosed between
square brackets, considering only regular IPv6 addresses represented
as compressed or uncompressed, excluding special IPv6 address
representations.

Signed-off-by: Antonio Ojea <antonio.ojea.garcia@gmail.com>
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Antonio Ojea
2022-06-25 12:23:38 +02:00
committed by Sebastiaan van Stijn
parent 8bec2b6529
commit 4866d8ba43
5 changed files with 181 additions and 7 deletions
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4
reference/docker/reference.go
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@@ -21,7 +21,9 @@
//
// reference := name [ ":" tag ] [ "@" digest ]
// name := [domain '/'] path-component ['/' path-component]*
// domain := domain-component ['.' domain-component]* [':' port-number]
// domain := host [':' port-number]
// host := domain-name | IPv4address | \[ IPv6address \] ; rfc3986 appendix-A
// domain-name := domain-component ['.' domain-component]*
// domain-component := /([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9-]*[a-zA-Z0-9])/
// port-number := /[0-9]+/
// path-component := alpha-numeric [separator alpha-numeric]*