83 lines
1.8 KiB
Go
83 lines
1.8 KiB
Go
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package main
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import (
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"fmt"
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"os"
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"github.com/slackhq/nebula/cert"
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"gopkg.in/yaml.v3"
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)
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var subCmdNebulaShow = subCmd{
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name: "show",
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descr: "Writes nebula network information to stdout in yaml format",
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do: func(subCmdCtx subCmdCtx) error {
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flags := subCmdCtx.flagSet(false)
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if err := flags.Parse(subCmdCtx.args); err != nil {
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return fmt.Errorf("parsing flags: %w", err)
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}
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hostBootstrap, err := loadHostBootstrap()
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if err != nil {
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return fmt.Errorf("loading host bootstrap: %w", err)
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}
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caPublicCreds := hostBootstrap.Nebula.CAPublicCredentials
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caCert, _, err := cert.UnmarshalNebulaCertificateFromPEM([]byte(caPublicCreds.CertPEM))
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if err != nil {
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return fmt.Errorf("unmarshaling ca.crt: %w", err)
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}
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if len(caCert.Details.Subnets) != 1 {
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return fmt.Errorf(
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"malformed ca.crt, contains unexpected subnets %#v",
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caCert.Details.Subnets,
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)
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}
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subnet := caCert.Details.Subnets[0]
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type outLighthouse struct {
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PublicAddr string `yaml:"public_addr"`
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IP string `yaml:"ip"`
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}
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out := struct {
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CACert string `yaml:"ca_cert_pem"`
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SubnetCIDR string `yaml:"subnet_cidr"`
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Lighthouses []outLighthouse `yaml:"lighthouses"`
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}{
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CACert: caPublicCreds.CertPEM,
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SubnetCIDR: subnet.String(),
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}
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for _, h := range hostBootstrap.Hosts {
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if h.Nebula.PublicAddr == "" {
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continue
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}
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out.Lighthouses = append(out.Lighthouses, outLighthouse{
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PublicAddr: h.Nebula.PublicAddr,
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IP: h.IP().String(),
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})
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}
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if err := yaml.NewEncoder(os.Stdout).Encode(out); err != nil {
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return fmt.Errorf("yaml encoding to stdout: %w", err)
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}
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return nil
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},
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}
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var subCmdNebula = subCmd{
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name: "nebula",
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descr: "Sub-commands related to the nebula VPN",
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do: func(subCmdCtx subCmdCtx) error {
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return subCmdCtx.doSubCmd(
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subCmdNebulaShow,
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)
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},
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}
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