fix(ocm): fix wildcards in ocm domains

Signed-off-by: jkoberg <jkoberg@owncloud.com>

changelog/unreleased/fix-wildcards.md

@@ -0,0 +1,5 @@
+Bugfix: Fix ocm wildcards
+
+ocm wildcards were not working properly. We now overwrite the wildcard values with the actual domain.
+
+https://github.com/cs3org/reva/pull/5033

pkg/ocm/provider/authorizer/json/json.go

@@ -114,9 +114,22 @@ func (a *authorizer) GetInfoByDomain(_ context.Context, domain string) (*ocmprov
 		return nil, err
 	}
 	for _, p := range a.providers {
+		// we can exit early if this an exact match
 		if strings.Contains(p.Domain, normalizedDomain) {
 			return p, nil
 		}
+
+		// check if the domain matches a regex
+		if ok, err := regexp.MatchString(p.Domain, normalizedDomain); ok && err == nil {
+			// overwrite wildcards with the actual domain
+			for i, s := range p.Services {
+				s.Endpoint.Path = strings.ReplaceAll(s.Endpoint.Path, p.Domain, normalizedDomain)
+				s.Host = strings.ReplaceAll(s.Host, p.Domain, normalizedDomain)
+				p.Services[i] = s
+			}
+			p.Domain = normalizedDomain
+			return p, nil
+		}
 	}
 	return nil, errtypes.NotFound(domain)
 }