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
|
package base
import (
"context"
"fmt"
"net"
"reflect"
"strings"
"github.com/spf13/cobra"
"github.com/hetznercloud/cli/internal/cmd/cmpl"
"github.com/hetznercloud/cli/internal/cmd/util"
"github.com/hetznercloud/cli/internal/hcapi2"
"github.com/hetznercloud/cli/internal/state"
"github.com/hetznercloud/hcloud-go/v2/hcloud"
)
// SetRdnsCmd allows defining commands for setting the RDNS of a resource.
type SetRdnsCmd struct {
ResourceNameSingular string // e.g. "server"
ShortDescription string
NameSuggestions func(client hcapi2.Client) func() []string
AdditionalFlags func(*cobra.Command)
Fetch func(ctx context.Context, client hcapi2.Client, cmd *cobra.Command, idOrName string) (interface{}, *hcloud.Response, error)
GetDefaultIP func(resource interface{}) net.IP
}
// CobraCommand creates a command that can be registered with cobra.
func (rc *SetRdnsCmd) CobraCommand(
ctx context.Context, client hcapi2.Client, tokenEnsurer state.TokenEnsurer, actionWaiter state.ActionWaiter,
) *cobra.Command {
cmd := &cobra.Command{
Use: fmt.Sprintf("set-rdns [FLAGS] %s", strings.ToUpper(rc.ResourceNameSingular)),
Short: rc.ShortDescription,
Args: cobra.ExactArgs(1),
ValidArgsFunction: cmpl.SuggestArgs(cmpl.SuggestCandidatesF(rc.NameSuggestions(client))),
TraverseChildren: true,
DisableFlagsInUseLine: true,
PreRunE: util.ChainRunE(tokenEnsurer.EnsureToken),
RunE: func(cmd *cobra.Command, args []string) error {
return rc.Run(ctx, client, cmd, actionWaiter, args)
},
}
cmd.Flags().StringP("hostname", "r", "", "Hostname to set as a reverse DNS PTR entry (required)")
cmd.MarkFlagRequired("hostname")
cmd.Flags().IPP("ip", "i", net.IP{}, "IP address for which the reverse DNS entry should be set")
if rc.AdditionalFlags != nil {
rc.AdditionalFlags(cmd)
}
return cmd
}
// Run executes a setRDNS command.
func (rc *SetRdnsCmd) Run(ctx context.Context, client hcapi2.Client, cmd *cobra.Command, actionWaiter state.ActionWaiter, args []string) error {
idOrName := args[0]
resource, _, err := rc.Fetch(ctx, client, cmd, idOrName)
if err != nil {
return err
}
// resource is an interface that always has a type, so the interface is never nil
// (i.e. == nil) is always false.
if reflect.ValueOf(resource).IsNil() {
return fmt.Errorf("%s not found: %s", rc.ResourceNameSingular, idOrName)
}
ip, _ := cmd.Flags().GetIP("ip")
if ip.IsUnspecified() || ip == nil {
ip = rc.GetDefaultIP(resource)
}
hostname, _ := cmd.Flags().GetString("hostname")
action, _, err := client.RDNS().ChangeDNSPtr(ctx, resource.(hcloud.RDNSSupporter), ip, hcloud.String(hostname))
if err != nil {
return err
}
if err := actionWaiter.ActionProgress(ctx, action); err != nil {
return err
}
fmt.Printf("Reverse DNS of %s %s changed\n", rc.ResourceNameSingular, idOrName)
return nil
}
|
