109 lines
2.8 KiB
Go
109 lines
2.8 KiB
Go
package docker
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import (
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"encoding/json"
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"fmt"
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"regexp"
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"strings"
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"github.com/spf13/viper"
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"github.com/coreos/clair/cmd/clairctl/xerrors"
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)
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//Image represent Image Manifest from Docker image, including the registry URL
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type Image struct {
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Name string
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Tag string
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Registry string
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FsLayers []Layer
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}
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//Layer represent the digest of a image layer
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type Layer struct {
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BlobSum string
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History string
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}
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const dockerImageRegex = "^(?:([^/]+)/)?(?:([^/]+)/)?([^@:/]+)(?:[@:](.+))?"
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const DockerHub = "registry-1.docker.io"
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const hubURI = "https://" + DockerHub + "/v2"
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var IsLocal = false
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func TmpLocal() string {
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return viper.GetString("hyperclair.tempFolder")
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}
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// Parse is used to parse a docker image command
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//
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//Example:
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//"register.com:5080/wemanity-belgium/alpine"
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//"register.com:5080/wemanity-belgium/alpine:latest"
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//"register.com:5080/alpine"
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//"register.com/wemanity-belgium/alpine"
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//"register.com/alpine"
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//"register.com/wemanity-belgium/alpine:latest"
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//"alpine"
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//"wemanity-belgium/alpine"
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//"wemanity-belgium/alpine:latest"
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func Parse(image string) (Image, error) {
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imageRegex := regexp.MustCompile(dockerImageRegex)
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if imageRegex.MatchString(image) == false {
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return Image{}, fmt.Errorf("cannot parse image name: %v", image)
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}
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groups := imageRegex.FindStringSubmatch(image)
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registry, repository, name, tag := groups[1], groups[2], groups[3], groups[4]
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if tag == "" {
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tag = "latest"
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}
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if repository == "" && !strings.ContainsAny(registry, ":.") {
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repository, registry = registry, hubURI //Regex problem, if no registry in url, regex parse repository as registry, so need to invert it
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} else {
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//FIXME We need to move to https. <error: tls: oversized record received with length 20527>
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//Maybe using a `insecure-registry` flag in configuration
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if strings.Contains(registry, "docker") {
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registry = "https://" + registry + "/v2"
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} else {
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registry = "http://" + registry + "/v2"
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}
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}
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if repository != "" {
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name = repository + "/" + name
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}
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if strings.Contains(registry, "docker.io") && repository == "" {
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return Image{}, xerrors.ErrDisallowed
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}
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return Image{
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Registry: registry,
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Name: name,
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Tag: tag,
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}, nil
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}
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// BlobsURI run Blobs URI as <registry>/<imageName>/blobs/<digest>
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// eg: "http://registry:5000/v2/jgsqware/ubuntu-git/blobs/sha256:13be4a52fdee2f6c44948b99b5b65ec703b1ca76c1ab5d2d90ae9bf18347082e"
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func (image Image) BlobsURI(digest string) string {
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return strings.Join([]string{image.Registry, image.Name, "blobs", digest}, "/")
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}
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func (image Image) String() string {
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return image.Registry + "/" + image.Name + ":" + image.Tag
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}
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func (image Image) AsJSON() (string, error) {
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b, err := json.Marshal(image)
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if err != nil {
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return "", fmt.Errorf("cannot marshal image: %v", err)
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}
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return string(b), nil
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}
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