mirror of
https://github.com/go-acme/lego.git
synced 2024-12-05 20:02:38 +02:00
203 lines
5.7 KiB
Go
203 lines
5.7 KiB
Go
// Let's Encrypt client to go!
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// CLI application for generating Let's Encrypt certificates using the ACME package.
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package main
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import (
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"fmt"
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"log"
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"os"
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"path"
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"strings"
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"text/tabwriter"
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"github.com/codegangsta/cli"
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"github.com/xenolf/lego/acme"
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)
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// Logger is used to log errors; if nil, the default log.Logger is used.
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var Logger *log.Logger
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// logger is an helper function to retrieve the available logger
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func logger() *log.Logger {
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if Logger == nil {
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Logger = log.New(os.Stderr, "", log.LstdFlags)
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}
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return Logger
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}
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var gittag string
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func main() {
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app := cli.NewApp()
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app.Name = "lego"
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app.Usage = "Let's Encrypt client written in Go"
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version := "0.3.0"
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if strings.HasPrefix(gittag, "v") {
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version = gittag
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}
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app.Version = version
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acme.UserAgent = "lego/" + app.Version
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defaultPath := ""
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cwd, err := os.Getwd()
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if err == nil {
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defaultPath = path.Join(cwd, ".lego")
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}
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app.Before = func(c *cli.Context) error {
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if c.GlobalString("path") == "" {
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logger().Fatal("Could not determine current working directory. Please pass --path.")
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}
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return nil
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}
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app.Commands = []cli.Command{
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{
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Name: "run",
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Usage: "Register an account, then create and install a certificate",
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Action: run,
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Flags: []cli.Flag{
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cli.BoolFlag{
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Name: "no-bundle",
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Usage: "Do not create a certificate bundle by adding the issuers certificate to the new certificate.",
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},
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},
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},
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{
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Name: "revoke",
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Usage: "Revoke a certificate",
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Action: revoke,
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},
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{
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Name: "renew",
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Usage: "Renew a certificate",
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Action: renew,
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Flags: []cli.Flag{
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cli.IntFlag{
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Name: "days",
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Value: 0,
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Usage: "The number of days left on a certificate to renew it.",
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},
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cli.BoolFlag{
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Name: "reuse-key",
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Usage: "Used to indicate you want to reuse your current private key for the new certificate.",
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},
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cli.BoolFlag{
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Name: "no-bundle",
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Usage: "Do not create a certificate bundle by adding the issuers certificate to the new certificate.",
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},
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},
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},
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{
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Name: "dnshelp",
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Usage: "Shows additional help for the --dns global option",
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Action: dnshelp,
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},
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}
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app.Flags = []cli.Flag{
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cli.StringSliceFlag{
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Name: "domains, d",
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Usage: "Add domains to the process",
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},
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cli.StringFlag{
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Name: "csr, c",
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Usage: "Certificate signing request filename, if an external CSR is to be used",
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},
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cli.StringFlag{
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Name: "server, s",
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Value: "https://acme-v01.api.letsencrypt.org/directory",
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Usage: "CA hostname (and optionally :port). The server certificate must be trusted in order to avoid further modifications to the client.",
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},
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cli.StringFlag{
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Name: "email, m",
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Usage: "Email used for registration and recovery contact.",
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},
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cli.BoolFlag{
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Name: "accept-tos, a",
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Usage: "By setting this flag to true you indicate that you accept the current Let's Encrypt terms of service.",
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},
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cli.StringFlag{
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Name: "key-type, k",
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Value: "rsa2048",
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Usage: "Key type to use for private keys. Supported: rsa2048, rsa4096, rsa8192, ec256, ec384",
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},
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cli.StringFlag{
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Name: "path",
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Usage: "Directory to use for storing the data",
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Value: defaultPath,
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},
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cli.StringSliceFlag{
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Name: "exclude, x",
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Usage: "Explicitly disallow solvers by name from being used. Solvers: \"http-01\", \"tls-sni-01\".",
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},
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cli.StringFlag{
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Name: "webroot",
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Usage: "Set the webroot folder to use for HTTP based challenges to write directly in a file in .well-known/acme-challenge",
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},
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cli.StringFlag{
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Name: "http",
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Usage: "Set the port and interface to use for HTTP based challenges to listen on. Supported: interface:port or :port",
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},
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cli.StringFlag{
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Name: "tls",
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Usage: "Set the port and interface to use for TLS based challenges to listen on. Supported: interface:port or :port",
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},
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cli.StringFlag{
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Name: "dns",
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Usage: "Solve a DNS challenge using the specified provider. Disables all other challenges. Run 'lego dnshelp' for help on usage.",
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},
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cli.IntFlag{
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Name: "http-timeout",
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Usage: "Set the HTTP timeout value to a specific value in seconds. The default is 10 seconds.",
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},
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cli.IntFlag{
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Name: "dns-timeout",
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Usage: "Set the DNS timeout value to a specific value in seconds. The default is 10 seconds.",
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},
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}
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err = app.Run(os.Args)
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if err != nil {
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log.Fatal(err)
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}
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}
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func dnshelp(c *cli.Context) error {
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fmt.Printf(
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`Credentials for DNS providers must be passed through environment variables.
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Here is an example bash command using the CloudFlare DNS provider:
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$ CLOUDFLARE_EMAIL=foo@bar.com \
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CLOUDFLARE_API_KEY=b9841238feb177a84330febba8a83208921177bffe733 \
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lego --dns cloudflare --domains www.example.com --email me@bar.com run
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`)
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w := tabwriter.NewWriter(os.Stdout, 0, 8, 1, '\t', 0)
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fmt.Fprintln(w, "Valid providers and their associated credential environment variables:")
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fmt.Fprintln(w)
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fmt.Fprintln(w, "\tcloudflare:\tCLOUDFLARE_EMAIL, CLOUDFLARE_API_KEY")
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fmt.Fprintln(w, "\tdigitalocean:\tDO_AUTH_TOKEN")
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fmt.Fprintln(w, "\tdnsimple:\tDNSIMPLE_EMAIL, DNSIMPLE_API_KEY")
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fmt.Fprintln(w, "\tgandi:\tGANDI_API_KEY")
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fmt.Fprintln(w, "\tgcloud:\tGCE_PROJECT")
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fmt.Fprintln(w, "\tmanual:\tnone")
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fmt.Fprintln(w, "\tnamecheap:\tNAMECHEAP_API_USER, NAMECHEAP_API_KEY")
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fmt.Fprintln(w, "\trfc2136:\tRFC2136_TSIG_KEY, RFC2136_TSIG_SECRET,\n\t\tRFC2136_TSIG_ALGORITHM, RFC2136_NAMESERVER")
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fmt.Fprintln(w, "\troute53:\tAWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_REGION")
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fmt.Fprintln(w, "\tdyn:\tDYN_CUSTOMER_NAME, DYN_USER_NAME, DYN_PASSWORD")
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fmt.Fprintln(w, "\tvultr:\tVULTR_API_KEY")
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w.Flush()
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fmt.Println(`
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For a more detailed explanation of a DNS provider's credential variables,
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please consult their online documentation.`)
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return nil
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}
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