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Stronger validation for uuid field in urls

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This change adds strong validation for the uuid variable for v2 routes. This is
a minor specification change but is okay since the uuid field is controlled by
the server. The character set is restricted to avoid path traversal, allowing
for alphanumeric values and urlsafe base64 encoding.

This change has no effect on client implementations.

Signed-off-by: Stephen J Day <stephen.day@docker.com>
This commit is contained in:
Stephen J Day 2015-04-01 18:57:59 -07:00
parent 9ee35877e3
commit 6eb804a1ec
2 changed files with 18 additions and 2 deletions
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4
docs/api/v2/descriptors.go
View file

@ -28,7 +28,7 @@ var (
Name: "uuid",
Type: "opaque",
Required: true,
Description: `A uuid identifying the upload. This field can accept almost anything.`,
Description: "A uuid identifying the upload. This field can accept characters that match `[a-zA-Z0-9-_.=]+`.",
}
digestPathParameter = ParameterDescriptor{
@ -985,7 +985,7 @@ var routeDescriptors = []RouteDescriptor{
{
Name: RouteNameBlobUploadChunk,
Path: "/v2/{name:" + RepositoryNameRegexp.String() + "}/blobs/uploads/{uuid}",
Path: "/v2/{name:" + RepositoryNameRegexp.String() + "}/blobs/uploads/{uuid:[a-zA-Z0-9-_.=]+}",
Entity: "Blob Upload",
Description: "Interact with blob uploads. Clients should never assemble URLs for this endpoint and should only take it through the `Location` header on related API requests. The `Location` header and its parameters should be preserved by clients, using the latest value returned via upload related API calls.",
Methods: []MethodDescriptor{

16
docs/api/v2/routes_test.go
View file

@ -98,6 +98,7 @@ func TestRouter(t *testing.T) {
},
},
{
// support uuid proper
RouteName: RouteNameBlobUploadChunk,
RequestURI: "/v2/foo/bar/blobs/uploads/D95306FA-FAD3-4E36-8D41-CF1C93EF8286",
Vars: map[string]string{
@ -113,6 +114,21 @@ func TestRouter(t *testing.T) {
"uuid": "RDk1MzA2RkEtRkFEMy00RTM2LThENDEtQ0YxQzkzRUY4Mjg2IA==",
},
},
{
// supports urlsafe base64
RouteName: RouteNameBlobUploadChunk,
RequestURI: "/v2/foo/bar/blobs/uploads/RDk1MzA2RkEtRkFEMy00RTM2LThENDEtQ0YxQzkzRUY4Mjg2IA_-==",
Vars: map[string]string{
"name": "foo/bar",
"uuid": "RDk1MzA2RkEtRkFEMy00RTM2LThENDEtQ0YxQzkzRUY4Mjg2IA_-==",
},
},
{
// does not match
RouteName: RouteNameBlobUploadChunk,
RequestURI: "/v2/foo/bar/blobs/uploads/totalandcompletejunk++$$-==",
StatusCode: http.StatusNotFound,
},
{
// Check ambiguity: ensure we can distinguish between tags for
// "foo/bar/image/image" and image for "foo/bar/image" with tag