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distribution: Add text/html and application/json as image mediatypes

As noted by #30083, the new strict checking of mediatypes misses some
cases where earlier bugs caused nonstandard mediatypes to be stored in
manifests. Two of the known cases are text/html and application/json,
which were returned by certain registries and stored by earlier versions
of Docker. Add special cases for text/html and application/json.

Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>

Aaron Lehmann authored on 2017/01/19 11:19:12
Showing 1 changed files

distribution/registry.go

History View file @ a215e15

@@ -23,7 +23,11 @@ import (
                      var ImageTypes = []string{
                      	schema2.MediaTypeImageConfig,
                      	// Handle unexpected values from https://github.com/docker/distribution/issues/1621
                     +	// (see also https://github.com/docker/docker/issues/22378,
                     +	// https://github.com/docker/docker/issues/30083)
                      	"application/octet-stream",
                     +	"application/json",
                     +	"text/html",
                      	// Treat defaulted values as images, newer types cannot be implied
                      	"",
+                     }