Xray-core/main/commands/all/tlscmd/cert.go

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2020-11-25 11:01:53 +00:00
package tlscmd
import (
"context"
"crypto/x509"
"encoding/json"
"os"
"strings"
"time"
"github.com/xtls/xray-core/v1/common"
"github.com/xtls/xray-core/v1/common/protocol/tls/cert"
"github.com/xtls/xray-core/v1/common/task"
"github.com/xtls/xray-core/v1/main/commands/base"
)
// CmdCert is the tls cert command
var CmdCert = &base.Command{
UsageLine: "{{.Exec}} tls cert [--ca] [--domain=xray.com] [--expire=240h]",
Short: "Generate TLS certificates",
Long: `
Generate TLS certificates.
The -domain=domain_name flag sets the domain name for the
certificate.
The -org=organization flag sets the organization name for the
certificate.
The -ca flag sets whether this certificate is a CA
The -json flag sets the output of certificate to JSON
The -file flag sets the certificate path to save.
The -expire flag expire time of the certificate. Default
value 3 months.
`,
}
func init() {
CmdCert.Run = executeCert // break init loop
}
var (
certDomainNames stringList
_ = func() bool {
CmdCert.Flag.Var(&certDomainNames, "domain", "Domain name for the certificate")
return true
}()
certCommonName = CmdCert.Flag.String("name", "Xray Inc", "The common name of this certificate")
certOrganization = CmdCert.Flag.String("org", "Xray Inc", "Organization of the certificate")
certIsCA = CmdCert.Flag.Bool("ca", false, "Whether this certificate is a CA")
certJSONOutput = CmdCert.Flag.Bool("json", true, "Print certificate in JSON format")
certFileOutput = CmdCert.Flag.String("file", "", "Save certificate in file.")
certExpire = CmdCert.Flag.Duration("expire", time.Hour*24*90 /* 90 days */, "Time until the certificate expires. Default value 3 months.")
)
func executeCert(cmd *base.Command, args []string) {
var opts []cert.Option
if *certIsCA {
opts = append(opts, cert.Authority(*certIsCA))
opts = append(opts, cert.KeyUsage(x509.KeyUsageCertSign|x509.KeyUsageKeyEncipherment|x509.KeyUsageDigitalSignature))
}
opts = append(opts, cert.NotAfter(time.Now().Add(*certExpire)))
opts = append(opts, cert.CommonName(*certCommonName))
if len(certDomainNames) > 0 {
opts = append(opts, cert.DNSNames(certDomainNames...))
}
opts = append(opts, cert.Organization(*certOrganization))
cert, err := cert.Generate(nil, opts...)
if err != nil {
base.Fatalf("failed to generate TLS certificate: %s", err)
}
if *certJSONOutput {
printJSON(cert)
}
if len(*certFileOutput) > 0 {
if err := printFile(cert, *certFileOutput); err != nil {
base.Fatalf("failed to save file: %s", err)
}
}
}
func printJSON(certificate *cert.Certificate) {
certPEM, keyPEM := certificate.ToPEM()
jCert := &jsonCert{
Certificate: strings.Split(strings.TrimSpace(string(certPEM)), "\n"),
Key: strings.Split(strings.TrimSpace(string(keyPEM)), "\n"),
}
content, err := json.MarshalIndent(jCert, "", " ")
common.Must(err)
os.Stdout.Write(content)
os.Stdout.WriteString("\n")
}
func writeFile(content []byte, name string) error {
f, err := os.Create(name)
if err != nil {
return err
}
defer f.Close()
return common.Error2(f.Write(content))
}
func printFile(certificate *cert.Certificate, name string) error {
certPEM, keyPEM := certificate.ToPEM()
return task.Run(context.Background(), func() error {
return writeFile(certPEM, name+"_cert.pem")
}, func() error {
return writeFile(keyPEM, name+"_key.pem")
})
}
type stringList []string
func (l *stringList) String() string {
return "String list"
}
func (l *stringList) Set(v string) error {
if v == "" {
base.Fatalf("empty value")
}
*l = append(*l, v)
return nil
}
type jsonCert struct {
Certificate []string `json:"certificate"`
Key []string `json:"key"`
}