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
182
183
184
|
package main
import (
"fmt"
"io"
"os"
"strings"
"github.com/containers/image/types"
"github.com/containers/libpod/cmd/podman/cliconfig"
"github.com/containers/libpod/cmd/podman/libpodruntime"
"github.com/containers/libpod/cmd/podman/shared"
"github.com/containers/libpod/libpod"
"github.com/containers/libpod/libpod/image"
"github.com/containers/libpod/pkg/util"
"github.com/containers/libpod/utils"
"github.com/pkg/errors"
"github.com/sirupsen/logrus"
"github.com/spf13/cobra"
)
var (
runlabelCommand cliconfig.RunlabelValues
runlabelDescription = `
Executes a command as described by a container image label.
`
_runlabelCommand = &cobra.Command{
Use: "runlabel [flags] LABEL IMAGE [ARG...]",
Short: "Execute the command described by an image label",
Long: runlabelDescription,
RunE: func(cmd *cobra.Command, args []string) error {
runlabelCommand.InputArgs = args
runlabelCommand.GlobalFlags = MainGlobalOpts
runlabelCommand.Remote = remoteclient
return runlabelCmd(&runlabelCommand)
},
Example: `podman container runlabel run imageID
podman container runlabel --pull install imageID arg1 arg2
podman container runlabel --display run myImage`,
}
)
func init() {
runlabelCommand.Command = _runlabelCommand
runlabelCommand.SetHelpTemplate(HelpTemplate())
runlabelCommand.SetUsageTemplate(UsageTemplate())
flags := runlabelCommand.Flags()
flags.StringVar(&runlabelCommand.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(&runlabelCommand.CertDir, "cert-dir", "", "`Pathname` of a directory containing TLS certificates and keys")
flags.StringVar(&runlabelCommand.Creds, "creds", "", "`Credentials` (USERNAME:PASSWORD) to use for authenticating to a registry")
flags.BoolVar(&runlabelCommand.Display, "display", false, "Preview the command that the label would run")
flags.BoolVar(&runlabelCommand.Replace, "replace", false, "Replace existing container with a new one from the image")
flags.StringVar(&runlabelCommand.Name, "name", "", "Assign a name to the container")
flags.StringVar(&runlabelCommand.Opt1, "opt1", "", "Optional parameter to pass for install")
flags.StringVar(&runlabelCommand.Opt2, "opt2", "", "Optional parameter to pass for install")
flags.StringVar(&runlabelCommand.Opt3, "opt3", "", "Optional parameter to pass for install")
flags.MarkHidden("opt1")
flags.MarkHidden("opt2")
flags.MarkHidden("opt3")
flags.BoolP("pull", "p", false, "Pull the image if it does not exist locally prior to executing the label contents")
flags.BoolVarP(&runlabelCommand.Quiet, "quiet", "q", false, "Suppress output information when installing images")
flags.StringVar(&runlabelCommand.SignaturePolicy, "signature-policy", "", "`Pathname` of signature policy file (not usually used)")
flags.BoolVar(&runlabelCommand.TlsVerify, "tls-verify", true, "Require HTTPS and verify certificates when contacting registries")
flags.MarkDeprecated("pull", "podman will pull if not found in local storage")
}
// installCmd gets the data from the command line and calls installImage
// to copy an image from a registry to a local machine
func runlabelCmd(c *cliconfig.RunlabelValues) error {
var (
imageName string
stdErr, stdOut io.Writer
stdIn io.Reader
extraArgs []string
)
// Evil images could trick into recursively executing the runlabel
// command. Avoid this by setting the "PODMAN_RUNLABEL_NESTED" env
// variable when executing a label first.
nested := os.Getenv("PODMAN_RUNLABEL_NESTED")
if nested == "1" {
return fmt.Errorf("nested runlabel calls: runlabels cannot execute the runlabel command")
}
opts := make(map[string]string)
runtime, err := libpodruntime.GetRuntime(getContext(), &c.PodmanCommand)
if err != nil {
return errors.Wrapf(err, "could not get runtime")
}
defer runtime.Shutdown(false)
args := c.InputArgs
if len(args) < 2 {
return errors.Errorf("the runlabel command requires at least 2 arguments: LABEL IMAGE")
}
if c.Display && c.Quiet {
return errors.Errorf("the display and quiet flags cannot be used together.")
}
if len(args) > 2 {
extraArgs = args[2:]
}
label := args[0]
runlabelImage := args[1]
if c.Flag("opt1").Changed {
opts["opt1"] = c.Opt1
}
if c.Flag("opt2").Changed {
opts["opt2"] = c.Opt2
}
if c.Flag("opt3").Changed {
opts["opt3"] = c.Opt3
}
ctx := getContext()
stdErr = os.Stderr
stdOut = os.Stdout
stdIn = os.Stdin
if c.Quiet {
stdErr = nil
stdOut = nil
stdIn = nil
}
dockerRegistryOptions := image.DockerRegistryOptions{
DockerCertPath: c.CertDir,
}
if c.Flag("tls-verify").Changed {
dockerRegistryOptions.DockerInsecureSkipTLSVerify = types.NewOptionalBool(!c.TlsVerify)
}
authfile := getAuthFile(c.Authfile)
runLabel, imageName, err := shared.GetRunlabel(label, runlabelImage, ctx, runtime, true, c.Creds, dockerRegistryOptions, authfile, c.SignaturePolicy, stdOut)
if err != nil {
return err
}
if runLabel == "" {
return errors.Errorf("%s does not have a label of %s", runlabelImage, label)
}
globalOpts := util.GetGlobalOpts(c)
cmd, env, err := shared.GenerateRunlabelCommand(runLabel, imageName, c.Name, opts, extraArgs, globalOpts)
if err != nil {
return err
}
if !c.Quiet {
fmt.Printf("command: %s\n", strings.Join(append([]string{os.Args[0]}, cmd[1:]...), " "))
if c.Display {
return nil
}
}
// If container already exists && --replace given -- Nuke it
if c.Replace {
for i, entry := range cmd {
if entry == "--name" {
name := cmd[i+1]
ctr, err := runtime.LookupContainer(name)
if err != nil {
if errors.Cause(err) != libpod.ErrNoSuchCtr {
logrus.Debugf("Error occurred searching for container %s: %s", name, err.Error())
return err
}
} else {
logrus.Debugf("Runlabel --replace option given. Container %s will be deleted. The new container will be named %s", ctr.ID(), name)
if err := runtime.RemoveContainer(ctx, ctr, true, false); err != nil {
return err
}
}
break
}
}
}
return utils.ExecCmdWithStdStreams(stdIn, stdOut, stdErr, env, cmd[0], cmd[1:]...)
}
|
