DockerCLI/internal/licenseutils/utils.go

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package licenseutils
import (
"context"
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"net/url"
"strings"
"github.com/docker/docker/api/types"
"github.com/docker/licensing"
"github.com/docker/licensing/model"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
)
// HubUser wraps a licensing client and holds key information
// for a user to avoid multiple lookups
type HubUser struct {
client licensing.Client
token string
User model.User
Orgs []model.Org
}
//GetOrgByID finds the org by the ID in the users list of orgs
func (u HubUser) GetOrgByID(orgID string) (model.Org, error) {
for _, org := range u.Orgs {
if org.ID == orgID {
return org, nil
}
}
return model.Org{}, fmt.Errorf("org %s not found", orgID)
}
// Login to the license server and return a client that can be used to look up and download license files or generate new trial licenses
func Login(ctx context.Context, authConfig *types.AuthConfig) (HubUser, error) {
baseURI, err := url.Parse(licensingDefaultBaseURI)
if err != nil {
return HubUser{}, err
}
lclient, err := licensing.New(&licensing.Config{
BaseURI: *baseURI,
HTTPClient: &http.Client{},
PublicKey: licensingPublicKey,
})
if err != nil {
return HubUser{}, err
}
// For licensing we know they must have a valid login session
if authConfig.Username == "" {
return HubUser{}, fmt.Errorf("you must be logged in to access licenses. Please use 'docker login' then try again")
}
token, err := lclient.LoginViaAuth(ctx, authConfig.Username, authConfig.Password)
if err != nil {
return HubUser{}, err
}
user, err := lclient.GetHubUserByName(ctx, authConfig.Username)
if err != nil {
return HubUser{}, err
}
orgs, err := lclient.GetHubUserOrgs(ctx, token)
if err != nil {
return HubUser{}, err
}
return HubUser{
client: lclient,
token: token,
User: *user,
Orgs: orgs,
}, nil
}
// GetAvailableLicenses finds all available licenses for a given account and their orgs
func (u HubUser) GetAvailableLicenses(ctx context.Context) ([]LicenseDisplay, error) {
subs, err := u.client.ListSubscriptions(ctx, u.token, u.User.ID)
if err != nil {
return nil, err
}
for _, org := range u.Orgs {
orgSub, err := u.client.ListSubscriptions(ctx, u.token, org.ID)
if err != nil {
return nil, err
}
subs = append(subs, orgSub...)
}
// Convert the SubscriptionDetails to a more user-friendly type to render in the CLI
res := []LicenseDisplay{}
// Filter out expired licenses
i := 0
for _, s := range subs {
if s.State != "expired" && s.Expires != nil {
owner := ""
if s.DockerID == u.User.ID {
owner = u.User.Username
} else {
ownerOrg, err := u.GetOrgByID(s.DockerID)
if err == nil {
owner = ownerOrg.Orgname
} else {
owner = "unknown"
logrus.Debugf("Unable to lookup org ID %s: %s", s.DockerID, err)
}
}
comps := []string{}
for _, pc := range s.PricingComponents {
comps = append(comps, fmt.Sprintf("%s:%d", pc.Name, pc.Value))
}
res = append(res, LicenseDisplay{
Subscription: *s,
Num: i,
Owner: owner,
ComponentsString: strings.Join(comps, ","),
})
i++
}
}
return res, nil
}
// GenerateTrialLicense will generate a new trial license for the specified user or org
func (u HubUser) GenerateTrialLicense(ctx context.Context, targetID string) (*model.IssuedLicense, error) {
subID, err := u.client.GenerateNewTrialSubscription(ctx, u.token, targetID, u.User.Email)
if err != nil {
return nil, err
}
return u.client.DownloadLicenseFromHub(ctx, u.token, subID)
}
// GetIssuedLicense will download a license by ID
func (u HubUser) GetIssuedLicense(ctx context.Context, ID string) (*model.IssuedLicense, error) {
return u.client.DownloadLicenseFromHub(ctx, u.token, ID)
}
// LoadLocalIssuedLicense will load a local license file
func LoadLocalIssuedLicense(ctx context.Context, filename string) (*model.IssuedLicense, error) {
baseURI, err := url.Parse(licensingDefaultBaseURI)
if err != nil {
return nil, err
}
lclient, err := licensing.New(&licensing.Config{
BaseURI: *baseURI,
HTTPClient: &http.Client{},
PublicKey: licensingPublicKey,
})
if err != nil {
return nil, err
}
return doLoadLocalIssuedLicense(ctx, filename, lclient)
}
func doLoadLocalIssuedLicense(ctx context.Context, filename string, lclient licensing.Client) (*model.IssuedLicense, error) {
var license model.IssuedLicense
data, err := ioutil.ReadFile(filename)
if err != nil {
return nil, err
}
err = json.Unmarshal(data, &license)
if err != nil {
return nil, errors.Wrap(err, "malformed license file")
}
_, err = lclient.VerifyLicense(ctx, license)
if err != nil {
return nil, err
}
return &license, nil
}
// ApplyLicense will store a license on the local system
func ApplyLicense(ctx context.Context, dclient licensing.WrappedDockerClient, license *model.IssuedLicense) error {
info, err := dclient.Info(ctx)
if err != nil {
return err
}
return licensing.StoreLicense(ctx, dclient, license, info.DockerRootDir)
}