1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
package utils
import (
"fmt"
"net/http"
"strings"
"github.com/containers/common/libimage"
"github.com/containers/image/v5/docker"
storageTransport "github.com/containers/image/v5/storage"
"github.com/containers/image/v5/transports/alltransports"
"github.com/containers/image/v5/types"
"github.com/containers/podman/v3/libpod"
api "github.com/containers/podman/v3/pkg/api/types"
"github.com/containers/podman/v3/pkg/util"
"github.com/containers/storage"
"github.com/docker/distribution/reference"
"github.com/pkg/errors"
)
// NormalizeToDockerHub normalizes the specified nameOrID to Docker Hub if the
// request is for the compat API and if containers.conf set the specific mode.
// If nameOrID is a (short) ID for a local image, the full ID will be returned.
func NormalizeToDockerHub(r *http.Request, nameOrID string) (string, error) {
if IsLibpodRequest(r) || !util.DefaultContainerConfig().Engine.CompatAPIEnforceDockerHub {
return nameOrID, nil
}
// Try to lookup the input to figure out if it was an ID or not.
runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
img, _, err := runtime.LibimageRuntime().LookupImage(nameOrID, nil)
if err != nil {
if errors.Cause(err) != storage.ErrImageUnknown {
return "", fmt.Errorf("normalizing name for compat API: %v", err)
}
} else if strings.HasPrefix(img.ID(), strings.TrimPrefix(nameOrID, "sha256:")) {
return img.ID(), nil
}
// No ID, so we can normalize.
named, err := reference.ParseNormalizedNamed(nameOrID)
if err != nil {
return "", fmt.Errorf("normalizing name for compat API: %v", err)
}
return named.String(), nil
}
// PossiblyEnforceDockerHub sets fields in the system context to enforce
// resolving short names to Docker Hub if the request is for the compat API and
// if containers.conf set the specific mode.
func PossiblyEnforceDockerHub(r *http.Request, sys *types.SystemContext) {
if IsLibpodRequest(r) || !util.DefaultContainerConfig().Engine.CompatAPIEnforceDockerHub {
return
}
sys.PodmanOnlyShortNamesIgnoreRegistriesConfAndForceDockerHub = true
}
// IsRegistryReference checks if the specified name points to the "docker://"
// transport. If it points to no supported transport, we'll assume a
// non-transport reference pointing to an image (e.g., "fedora:latest").
func IsRegistryReference(name string) error {
imageRef, err := alltransports.ParseImageName(name)
if err != nil {
// No supported transport -> assume a docker-stype reference.
return nil
}
if imageRef.Transport().Name() == docker.Transport.Name() {
return nil
}
return errors.Errorf("unsupported transport %s in %q: only docker transport is supported", imageRef.Transport().Name(), name)
}
// ParseStorageReference parses the specified image name to a
// `types.ImageReference` and enforces it to refer to a
// containers-storage-transport reference.
func ParseStorageReference(name string) (types.ImageReference, error) {
storagePrefix := storageTransport.Transport.Name()
imageRef, err := alltransports.ParseImageName(name)
if err == nil && imageRef.Transport().Name() != docker.Transport.Name() {
return nil, errors.Errorf("reference %q must be a storage reference", name)
} else if err != nil {
origErr := err
imageRef, err = alltransports.ParseImageName(fmt.Sprintf("%s:%s", storagePrefix, name))
if err != nil {
return nil, errors.Wrapf(origErr, "reference %q must be a storage reference", name)
}
}
return imageRef, nil
}
func GetImage(r *http.Request, name string) (*libimage.Image, error) {
runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
image, _, err := runtime.LibimageRuntime().LookupImage(name, nil)
if err != nil {
return nil, err
}
return image, err
}
|
