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
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
package main
import (
"fmt"
"io"
"os"
"strings"
"github.com/containers/image/docker"
dockerarchive "github.com/containers/image/docker/archive"
"github.com/containers/image/transports/alltransports"
"github.com/containers/image/types"
"github.com/containers/libpod/cmd/podman/cliconfig"
"github.com/containers/libpod/libpod/common"
image2 "github.com/containers/libpod/libpod/image"
"github.com/containers/libpod/pkg/adapter"
"github.com/containers/libpod/pkg/util"
opentracing "github.com/opentracing/opentracing-go"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var (
pullCommand cliconfig.PullValues
pullDescription = `
Pulls an image from a registry and stores it locally.
An image can be pulled using its tag or digest. If a tag is not
specified, the image with the 'latest' tag (if it exists) is pulled
`
_pullCommand = &cobra.Command{
Use: "pull",
Short: "Pull an image from a registry",
Long: pullDescription,
RunE: func(cmd *cobra.Command, args []string) error {
pullCommand.InputArgs = args
pullCommand.GlobalFlags = MainGlobalOpts
return pullCmd(&pullCommand)
},
Example: `podman pull imageName
podman pull --cert-dir image/certs --authfile temp-auths/myauths.json docker://docker.io/myrepo/finaltest
podman pull fedora:latest`,
}
)
func init() {
pullCommand.Command = _pullCommand
pullCommand.SetUsageTemplate(UsageTemplate())
flags := pullCommand.Flags()
flags.BoolVar(&pullCommand.AllTags, "all-tags", false, "All tagged images inthe repository will be pulled")
flags.StringVar(&pullCommand.Authfile, "authfile", "", "Path of the authentication file. Default is ${XDG_RUNTIME_DIR}/containers/auth.json. Use REGISTRY_AUTH_FILE environment variable to override")
flags.StringVar(&pullCommand.CertDir, "cert-dir", "", "`Pathname` of a directory containing TLS certificates and keys")
flags.StringVar(&pullCommand.Creds, "creds", "", "`Credentials` (USERNAME:PASSWORD) to use for authenticating to a registry")
flags.BoolVarP(&pullCommand.Quiet, "quiet", "q", false, "Suppress output information when pulling images")
flags.StringVar(&pullCommand.SignaturePolicy, "signature-policy", "", "`Pathname` of signature policy file (not usually used)")
flags.BoolVar(&pullCommand.TlsVerify, "tls-verify", true, "Require HTTPS and verify certificates when contacting registries (default: true)")
}
// pullCmd gets the data from the command line and calls pullImage
// to copy an image from a registry to a local machine
func pullCmd(c *cliconfig.PullValues) error {
if c.Bool("trace") {
span, _ := opentracing.StartSpanFromContext(Ctx, "pullCmd")
defer span.Finish()
}
runtime, err := adapter.GetRuntime(&c.PodmanCommand)
if err != nil {
return errors.Wrapf(err, "could not get runtime")
}
defer runtime.Shutdown(false)
args := c.InputArgs
if len(args) == 0 {
return errors.Errorf("an image name must be specified")
}
if len(args) > 1 {
return errors.Errorf("too many arguments. Requires exactly 1")
}
arr := strings.SplitN(args[0], ":", 2)
if len(arr) == 2 {
if c.Bool("all-tags") {
return errors.Errorf("tag can't be used with --all-tags")
}
}
ctx := getContext()
image := args[0]
var registryCreds *types.DockerAuthConfig
if c.Flag("creds").Changed {
creds, err := util.ParseRegistryCreds(c.Creds)
if err != nil {
return err
}
registryCreds = creds
}
var (
writer io.Writer
)
if !c.Quiet {
writer = os.Stderr
}
dockerRegistryOptions := image2.DockerRegistryOptions{
DockerRegistryCreds: registryCreds,
DockerCertPath: c.CertDir,
}
if c.Flag("tls-verify").Changed {
dockerRegistryOptions.DockerInsecureSkipTLSVerify = types.NewOptionalBool(!c.TlsVerify)
}
// Possible for docker-archive to have multiple tags, so use LoadFromArchiveReference instead
if strings.HasPrefix(image, dockerarchive.Transport.Name()+":") {
srcRef, err := alltransports.ParseImageName(image)
if err != nil {
return errors.Wrapf(err, "error parsing %q", image)
}
newImage, err := runtime.LoadFromArchiveReference(getContext(), srcRef, c.SignaturePolicy, writer)
if err != nil {
return errors.Wrapf(err, "error pulling image from %q", image)
}
fmt.Println(newImage[0].ID())
} else {
authfile := getAuthFile(c.String("authfile"))
spec := image
systemContext := common.GetSystemContext("", authfile, false)
srcRef, err := alltransports.ParseImageName(spec)
if err != nil {
dockerTransport := "docker://"
logrus.Debugf("error parsing image name %q, trying with transport %q: %v", spec, dockerTransport, err)
spec = dockerTransport + spec
srcRef2, err2 := alltransports.ParseImageName(spec)
if err2 != nil {
return errors.Wrapf(err2, "error parsing image name %q", image)
}
srcRef = srcRef2
}
var names []string
if c.Bool("all-tags") {
if srcRef.DockerReference() == nil {
return errors.New("Non-docker transport is currently not supported")
}
tags, err := docker.GetRepositoryTags(ctx, systemContext, srcRef)
if err != nil {
return errors.Wrapf(err, "error getting repository tags")
}
for _, tag := range tags {
name := spec + ":" + tag
names = append(names, name)
}
} else {
names = append(names, spec)
}
var foundIDs []string
foundImage := true
for _, name := range names {
newImage, err := runtime.New(getContext(), name, c.String("signature-policy"), authfile, writer, &dockerRegistryOptions, image2.SigningOptions{}, true, nil)
if err != nil {
println(errors.Wrapf(err, "error pulling image %q", name))
foundImage = false
continue
}
foundIDs = append(foundIDs, newImage.ID())
}
if len(names) == 1 && !foundImage {
return errors.Wrapf(err, "error pulling image %q", image)
}
if len(names) > 1 {
fmt.Println("Pulled Images:")
}
for _, id := range foundIDs {
fmt.Println(id)
}
} // end else if strings.HasPrefix(image, dockerarchive.Transport.Name()+":")
return nil
}
|
