Merge branch 'cobraCLI' of https://github.com/gianluca311/lego into replace-cli-library

README.md

@@ -71,36 +71,49 @@ This traffic redirection is only needed as long as lego solves challenges. As so
 #### Usage
 
 ```
-NAME:
+Let's Encrypt client written in Go
-   lego - Let's Encrypt client written in Go
 
-USAGE:
+Usage:
-   lego [global options] command [command options] [arguments...]
+  lego [command]
 
-VERSION:
+Available Commands:
-   0.3.0
-   
-COMMANDS:
-   run		Register an account, then create and install a certificate
-   revoke	Revoke a certificate
-   renew	Renew a certificate
   dnshelp     Shows additional help for the --dns global option
-   help, h	Shows a list of commands or help for one command
+  renew       Renew a certificate
+  revoke      Revoke a certificate
+  run         Register an account, then create and install a certificate
+  version     Prints current version of lego
 
-GLOBAL OPTIONS:
+Flags:
-   --domains, -d [--domains option --domains option]			Add domains to the process
+  -a, --accept-tos        By setting this flag to true you indicate that you accept the current Let's Encrypt terms of service.
-   --server, -s "https://acme-v01.api.letsencrypt.org/directory"	CA hostname (and optionally :port). The server certificate must be trusted in order to avoid further modifications to the client.
+      --dns string        Solve a DNS challenge using the specified provider. Disables all other challenges. Run 'lego dnshelp' for help on usage.
-   --email, -m 								Email used for registration and recovery contact.
+  -d, --domains value     Add domains to the process (default [])
-   --accept-tos, -a							By setting this flag to true you indicate that you accept the current Let's Encrypt terms of service.
+  -m, --email string      Email used for registration and recovery contact.
-   --key-type, -k "rsa2048"						Key type to use for private keys. Supported: rsa2048, rsa4096, rsa8192, ec256, ec384
+  -x, --exclude value     Explicitly disallow solvers by name from being used. Solvers: "http-01", "tls-sni-01". (default [])
-   --path "${CWD}/.lego"	Directory to use for storing the data
+  -h, --help              help for lego
-   --exclude, -x [--exclude option --exclude option]			Explicitly disallow solvers by name from being used. Solvers: "http-01", "tls-sni-01".
+      --http string       Set the port and interface to use for HTTP based challenges to listen on. Supported: interface:port or :port
-   --webroot 								Set the webroot folder to use for HTTP based challenges to write directly in a file in .well-known/acme-challenge
+  -k, --key-type string   Key type to use for private keys. Supported: rsa2048, rsa4096, rsa8192, ec256, ec384 (default "rsa2048")
-   --http 								Set the port and interface to use for HTTP based challenges to listen on. Supported: interface:port or :port
+      --path string       Directory to use for storing the data (default "{$CWD}/.lego")
-   --tls 								Set the port and interface to use for TLS based challenges to listen on. Supported: interface:port or :port
+  -s, --server string     CA hostname (and optionally :port). The server certificate must be trusted in order to avoid further modifications to the client. (default "https://acme-v01.api.letsencrypt.org/directory")
-   --dns 								Solve a DNS challenge using the specified provider. Disables all other challenges. Run 'lego dnshelp' for help on usage.
+      --tls string        Set the port and interface to use for TLS based challenges to listen on. Supported: interface:port or :port
-   --help, -h								show help
+      --webroot string    Set the webroot folder to use for HTTP based challenges to write directly in a file in .well-known/acme-challenge
-   --version, -v							print the version
+
+Use "lego [command] --help" for more information about a command.
+```
+
+For further help on a command:
+```
+$ lego renew --help
+Renew a certificate
+
+Usage:
+  lego renew [flags]
+
+Flags:
+      --days int     The number of days left on a certificate to renew it.
+      --no-bundle    Do not create a certificate bundle by adding the issuers certificate to the new certificate.
+      --resuse-key   Used to indicate you want to reuse your current private key for the new certificate.
+      
+...
 ```
 
 ##### CLI Example
@@ -111,7 +124,7 @@ If your environment does not allow you to bind to these ports, please read [Port
 Obtain a certificate:
 
 ```bash
-$ lego --email="foo@bar.com" --domains="example.com" run
+$ lego run --email="foo@bar.com" --domains="example.com"
 ```
 
 (Find your certificate in the `.lego` folder of current working directory.)
@@ -119,13 +132,13 @@ $ lego --email="foo@bar.com" --domains="example.com" run
 To renew the certificate:
 
 ```bash
-$ lego --email="foo@bar.com" --domains="example.com" renew
+$ lego renew --email="foo@bar.com" --domains="example.com"
 ```
 
 Obtain a certificate using the DNS challenge and AWS Route 53:
 
 ```bash
-$ AWS_REGION=us-east-1 AWS_ACCESS_KEY_ID=my_id AWS_SECRET_ACCESS_KEY=my_key lego --email="foo@bar.com" --domains="example.com" --dns="route53" run
+$ AWS_REGION=us-east-1 AWS_ACCESS_KEY_ID=my_id AWS_SECRET_ACCESS_KEY=my_key lego run --email="foo@bar.com" --domains="example.com" --dns="route53"
 ```
 
 Note that `--dns=foo` implies `--exclude=http-01` and `--exclude=tls-sni-01`. lego will not attempt other challenges if you've told it to use DNS instead.

cli.go

@@ -1,178 +0,0 @@
-// Let's Encrypt client to go!
-// CLI application for generating Let's Encrypt certificates using the ACME package.
-package main
-
-import (
-	"fmt"
-	"log"
-	"os"
-	"path"
-	"strings"
-	"text/tabwriter"
-
-	"github.com/codegangsta/cli"
-	"github.com/xenolf/lego/acme"
-)
-
-// Logger is used to log errors; if nil, the default log.Logger is used.
-var Logger *log.Logger
-
-// logger is an helper function to retrieve the available logger
-func logger() *log.Logger {
-	if Logger == nil {
-		Logger = log.New(os.Stderr, "", log.LstdFlags)
-	}
-	return Logger
-}
-
-var gittag string
-
-func main() {
-	app := cli.NewApp()
-	app.Name = "lego"
-	app.Usage = "Let's Encrypt client written in Go"
-
-	version := "0.3.0"
-	if strings.HasPrefix(gittag, "v") {
-		version = gittag
-	}
-
-	app.Version = version
-
-	acme.UserAgent = "lego/" + app.Version
-
-	cwd, err := os.Getwd()
-	if err != nil {
-		logger().Fatal("Could not determine current working directory. Please pass --path.")
-	}
-	defaultPath := path.Join(cwd, ".lego")
-
-	app.Commands = []cli.Command{
-		{
-			Name:   "run",
-			Usage:  "Register an account, then create and install a certificate",
-			Action: run,
-			Flags: []cli.Flag{
-				cli.BoolFlag{
-					Name:  "no-bundle",
-					Usage: "Do not create a certificate bundle by adding the issuers certificate to the new certificate.",
-				},
-			},
-		},
-		{
-			Name:   "revoke",
-			Usage:  "Revoke a certificate",
-			Action: revoke,
-		},
-		{
-			Name:   "renew",
-			Usage:  "Renew a certificate",
-			Action: renew,
-			Flags: []cli.Flag{
-				cli.IntFlag{
-					Name:  "days",
-					Value: 0,
-					Usage: "The number of days left on a certificate to renew it.",
-				},
-				cli.BoolFlag{
-					Name:  "reuse-key",
-					Usage: "Used to indicate you want to reuse your current private key for the new certificate.",
-				},
-				cli.BoolFlag{
-					Name:  "no-bundle",
-					Usage: "Do not create a certificate bundle by adding the issuers certificate to the new certificate.",
-				},
-			},
-		},
-		{
-			Name:   "dnshelp",
-			Usage:  "Shows additional help for the --dns global option",
-			Action: dnshelp,
-		},
-	}
-
-	app.Flags = []cli.Flag{
-		cli.StringSliceFlag{
-			Name:  "domains, d",
-			Usage: "Add domains to the process",
-		},
-		cli.StringFlag{
-			Name:  "server, s",
-			Value: "https://acme-v01.api.letsencrypt.org/directory",
-			Usage: "CA hostname (and optionally :port). The server certificate must be trusted in order to avoid further modifications to the client.",
-		},
-		cli.StringFlag{
-			Name:  "email, m",
-			Usage: "Email used for registration and recovery contact.",
-		},
-		cli.BoolFlag{
-			Name:  "accept-tos, a",
-			Usage: "By setting this flag to true you indicate that you accept the current Let's Encrypt terms of service.",
-		},
-		cli.StringFlag{
-			Name:  "key-type, k",
-			Value: "rsa2048",
-			Usage: "Key type to use for private keys. Supported: rsa2048, rsa4096, rsa8192, ec256, ec384",
-		},
-		cli.StringFlag{
-			Name:  "path",
-			Usage: "Directory to use for storing the data",
-			Value: defaultPath,
-		},
-		cli.StringSliceFlag{
-			Name:  "exclude, x",
-			Usage: "Explicitly disallow solvers by name from being used. Solvers: \"http-01\", \"tls-sni-01\".",
-		},
-		cli.StringFlag{
-			Name:  "webroot",
-			Usage: "Set the webroot folder to use for HTTP based challenges to write directly in a file in .well-known/acme-challenge",
-		},
-		cli.StringFlag{
-			Name:  "http",
-			Usage: "Set the port and interface to use for HTTP based challenges to listen on. Supported: interface:port or :port",
-		},
-		cli.StringFlag{
-			Name:  "tls",
-			Usage: "Set the port and interface to use for TLS based challenges to listen on. Supported: interface:port or :port",
-		},
-		cli.StringFlag{
-			Name:  "dns",
-			Usage: "Solve a DNS challenge using the specified provider. Disables all other challenges. Run 'lego dnshelp' for help on usage.",
-		},
-	}
-
-	app.Run(os.Args)
-}
-
-func dnshelp(c *cli.Context) {
-	fmt.Printf(
-		`Credentials for DNS providers must be passed through environment variables.
-
-Here is an example bash command using the CloudFlare DNS provider:
-
-  $ CLOUDFLARE_EMAIL=foo@bar.com \
-    CLOUDFLARE_API_KEY=b9841238feb177a84330febba8a83208921177bffe733 \
-    lego --dns cloudflare --domains www.example.com --email me@bar.com run
-
-`)
-
-	w := tabwriter.NewWriter(os.Stdout, 0, 8, 1, '\t', 0)
-	fmt.Fprintln(w, "Valid providers and their associated credential environment variables:")
-	fmt.Fprintln(w)
-	fmt.Fprintln(w, "\tcloudflare:\tCLOUDFLARE_EMAIL, CLOUDFLARE_API_KEY")
-	fmt.Fprintln(w, "\tdigitalocean:\tDO_AUTH_TOKEN")
-	fmt.Fprintln(w, "\tdnsimple:\tDNSIMPLE_EMAIL, DNSIMPLE_API_KEY")
-	fmt.Fprintln(w, "\tgandi:\tGANDI_API_KEY")
-	fmt.Fprintln(w, "\tgcloud:\tGCE_PROJECT")
-	fmt.Fprintln(w, "\tmanual:\tnone")
-	fmt.Fprintln(w, "\tnamecheap:\tNAMECHEAP_API_USER, NAMECHEAP_API_KEY")
-	fmt.Fprintln(w, "\trfc2136:\tRFC2136_TSIG_KEY, RFC2136_TSIG_SECRET,\n\t\tRFC2136_TSIG_ALGORITHM, RFC2136_NAMESERVER")
-	fmt.Fprintln(w, "\troute53:\tAWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_REGION")
-	fmt.Fprintln(w, "\tdyn:\tDYN_CUSTOMER_NAME, DYN_USER_NAME, DYN_PASSWORD")
-	fmt.Fprintln(w, "\tvultr:\tVULTR_API_KEY")
-	w.Flush()
-
-	fmt.Println(`
-For a more detailed explanation of a DNS provider's credential variables,
-please consult their online documentation.`)
-}

cmd/dnshelp.go

@@ -0,0 +1,63 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+	"text/tabwriter"
+
+	"github.com/spf13/cobra"
+)
+
+// dnshelpCmd represents the dnshelp command
+var dnshelpCmd = &cobra.Command{
+	Use:   "dnshelp",
+	Short: "Shows additional help for the --dns global option",
+	Long: ``,
+	Run: func(cmd *cobra.Command, args []string) {
+		fmt.Printf(
+			`Credentials for DNS providers must be passed through environment variables.
+
+Here is an example bash command using the CloudFlare DNS provider:
+
+  $ CLOUDFLARE_EMAIL=foo@bar.com \
+    CLOUDFLARE_API_KEY=b9841238feb177a84330febba8a83208921177bffe733 \
+    lego --dns cloudflare --domains www.example.com --email me@bar.com run
+
+`)
+
+		w := tabwriter.NewWriter(os.Stdout, 0, 8, 1, '\t', 0)
+		fmt.Fprintln(w, "Valid providers and their associated credential environment variables:")
+		fmt.Fprintln(w)
+		fmt.Fprintln(w, "\tcloudflare:\tCLOUDFLARE_EMAIL, CLOUDFLARE_API_KEY")
+		fmt.Fprintln(w, "\tdigitalocean:\tDO_AUTH_TOKEN")
+		fmt.Fprintln(w, "\tdnsimple:\tDNSIMPLE_EMAIL, DNSIMPLE_API_KEY")
+		fmt.Fprintln(w, "\tgandi:\tGANDI_API_KEY")
+		fmt.Fprintln(w, "\tgcloud:\tGCE_PROJECT")
+		fmt.Fprintln(w, "\tmanual:\tnone")
+		fmt.Fprintln(w, "\tnamecheap:\tNAMECHEAP_API_USER, NAMECHEAP_API_KEY")
+		fmt.Fprintln(w, "\trfc2136:\tRFC2136_TSIG_KEY, RFC2136_TSIG_SECRET,\n\t\tRFC2136_TSIG_ALGORITHM, RFC2136_NAMESERVER")
+		fmt.Fprintln(w, "\troute53:\tAWS_ACCESS_KEY_ID, AWS_SECRET_ACCESS_KEY, AWS_REGION")
+		fmt.Fprintln(w, "\tdyn:\tDYN_CUSTOMER_NAME, DYN_USER_NAME, DYN_PASSWORD")
+		fmt.Fprintln(w, "\tvultr:\tVULTR_API_KEY")
+		w.Flush()
+
+		fmt.Println(`
+For a more detailed explanation of a DNS provider's credential variables,
+please consult their online documentation.`)
+	},
+}
+
+func init() {
+	RootCmd.AddCommand(dnshelpCmd)
+
+	// Here you will define your flags and configuration settings.
+
+	// Cobra supports Persistent Flags which will work for this command
+	// and all subcommands, e.g.:
+	// dnshelpCmd.PersistentFlags().String("foo", "", "A help for foo")
+
+	// Cobra supports local flags which will only run when this command
+	// is called directly, e.g.:
+	// dnshelpCmd.Flags().BoolP("toggle", "t", false, "Help message for toggle")
+
+}

cmd/renew.go

@@ -0,0 +1,110 @@
+package cmd
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"path"
+	"time"
+
+	"github.com/xenolf/lego/cmd/utils"
+	"github.com/spf13/cobra"
+	"github.com/xenolf/lego/acme"
+)
+
+func renewHandler(cmd *cobra.Command, args []string) {
+	conf, _, client := utils.Setup(RootCmd)
+
+    domains, err := RootCmd.PersistentFlags().GetStringSlice("domains")
+    if err != nil {
+        logger().Fatalln(err.Error())
+    }
+    
+	if len(domains) <= 0 {
+		logger().Fatal("Please specify at least one domain.")
+	}
+
+	domain := domains[0]
+
+	// load the cert resource from files.
+	// We store the certificate, private key and metadata in different files
+	// as web servers would not be able to work with a combined file.
+	certPath := path.Join(conf.CertPath(), domain+".crt")
+	privPath := path.Join(conf.CertPath(), domain+".key")
+	metaPath := path.Join(conf.CertPath(), domain+".json")
+
+	certBytes, err := ioutil.ReadFile(certPath)
+	if err != nil {
+		logger().Fatalf("Error while loading the certificate for domain %s\n\t%s", domain, err.Error())
+	}
+    
+    days, err := cmd.PersistentFlags().GetInt("days")
+    if err != nil {
+        logger().Fatalln(err.Error())
+    }
+    
+	if days > 0 {
+		expTime, err := acme.GetPEMCertExpiration(certBytes)
+		if err != nil {
+			logger().Printf("Could not get Certification expiration for domain %s", domain)
+		}
+
+		if int(expTime.Sub(time.Now()).Hours()/24.0) > days {
+			return
+		}
+	}
+
+	metaBytes, err := ioutil.ReadFile(metaPath)
+	if err != nil {
+		logger().Fatalf("Error while loading the meta data for domain %s\n\t%s", domain, err.Error())
+	}
+
+	var certRes acme.CertificateResource
+	err = json.Unmarshal(metaBytes, &certRes)
+	if err != nil {
+		logger().Fatalf("Error while marshalling the meta data for domain %s\n\t%s", domain, err.Error())
+	}
+
+    reusekey, err := cmd.PersistentFlags().GetBool("reuse-key")
+    if err != nil {
+        logger().Fatalln(err.Error())
+    }
+    
+	if reusekey {
+		keyBytes, err := ioutil.ReadFile(privPath)
+		if err != nil {
+			logger().Fatalf("Error while loading the private key for domain %s\n\t%s", domain, err.Error())
+		}
+		certRes.PrivateKey = keyBytes
+	}
+
+	certRes.Certificate = certBytes
+
+    nobundle, err := cmd.PersistentFlags().GetBool("no-bundle")
+    if err != nil {
+        logger().Fatalln(err.Error())
+    }
+    
+	newCert, err := client.RenewCertificate(certRes, !nobundle)
+	if err != nil {
+		logger().Fatalf("%s", err.Error())
+	}
+
+	utils.SaveCertRes(newCert, conf)
+}
+
+// renewCmd represents the renew command
+var renewCmd = &cobra.Command{
+	Use:   "renew",
+	Short: "Renew a certificate",
+	Long:  ``,
+	Run:   renewHandler,
+}
+
+func init() {
+	RootCmd.AddCommand(renewCmd)
+
+	renewCmd.PersistentFlags().Int("days", 0, "The number of days left on a certificate to renew it.")
+	renewCmd.PersistentFlags().Bool("resuse-key", false, "Used to indicate you want to reuse your current private key for the new certificate.")
+	renewCmd.PersistentFlags().Bool("no-bundle", false, "Do not create a certificate bundle by adding the issuers certificate to the new certificate.")
+
+}

cmd/revoke.go

@@ -0,0 +1,50 @@
+package cmd
+
+import (
+	"io/ioutil"
+	"path"
+
+	"github.com/xenolf/lego/cmd/utils"
+	"github.com/spf13/cobra"
+)
+
+func revokeHandler(cmd *cobra.Command, args []string) {
+	conf, _, client := utils.Setup(RootCmd)
+
+	err := utils.CheckFolder(conf.CertPath())
+	if err != nil {
+		logger().Fatalf("Could not check/create path: %s", err.Error())
+	}
+
+    domains, err := RootCmd.PersistentFlags().GetStringSlice("domains")
+    if err != nil {
+        logger().Fatalln(err.Error())
+    }
+    
+	for _, domain := range domains {
+		logger().Printf("Trying to revoke certificate for domain %s", domain)
+
+		certPath := path.Join(conf.CertPath(), domain+".crt")
+		certBytes, err := ioutil.ReadFile(certPath)
+
+		err = client.RevokeCertificate(certBytes)
+		if err != nil {
+			logger().Fatalf("Error while revoking the certificate for domain %s\n\t%s", domain, err.Error())
+		} else {
+			logger().Print("Certificate was revoked.")
+		}
+	}
+}
+
+// revokeCmd represents the revoke command
+var revokeCmd = &cobra.Command{
+	Use:   "revoke",
+	Short: "Revoke a certificate",
+	Long:  ``,
+	Run: revokeHandler,
+}
+
+func init() {
+	RootCmd.AddCommand(revokeCmd)
+
+}

cmd/root.go

@@ -0,0 +1,89 @@
+package cmd
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"path"
+	"strings"
+
+	"github.com/spf13/cobra"
+	"github.com/spf13/viper"
+	"github.com/xenolf/lego/acme"
+)
+
+var gittag string
+var cfgFile string
+var version string
+var Logger *log.Logger
+
+func logger() *log.Logger {
+	if Logger == nil {
+		Logger = log.New(os.Stderr, "", log.LstdFlags)
+	}
+	return Logger
+}
+
+// This represents the base command when called without any subcommands
+var RootCmd = &cobra.Command{
+	Use:   "lego",
+	Short: "Let's Encrypt client written in Go",
+	Long:  ``,
+	// Uncomment the following line if your bare application
+	// has an action associated with it:
+	//	Run: func(cmd *cobra.Command, args []string) { },
+}
+
+// Execute adds all child commands to the root command sets flags appropriately.
+// This is called by main.main(). It only needs to happen once to the rootCmd.
+func Execute() {
+	if err := RootCmd.Execute(); err != nil {
+		fmt.Println(err)
+		os.Exit(-1)
+	}
+}
+
+func init() {
+	cobra.OnInitialize(initConfig)
+    
+	version = "0.3.0"
+	if strings.HasPrefix(gittag, "v") {
+		version = gittag
+	}
+
+	acme.UserAgent = "lego/" + version
+	cwd, err := os.Getwd()
+	if err != nil {
+		logger().Fatal("Could not determine current working directory. Please pass --path.")
+	}
+	defaultPath := path.Join(cwd, ".lego")
+
+	// Cobra also supports local flags, which will only run
+	// when this action is called directly.
+	RootCmd.PersistentFlags().StringSliceP("domains", "d", nil, "Add domains to the process")
+	RootCmd.PersistentFlags().StringP("server", "s", "https://acme-v01.api.letsencrypt.org/directory", "CA hostname (and optionally :port). The server certificate must be trusted in order to avoid further modifications to the client.")
+	RootCmd.PersistentFlags().StringP("email", "m", "", "Email used for registration and recovery contact.")
+	RootCmd.PersistentFlags().BoolP("accept-tos", "a", false, "By setting this flag to true you indicate that you accept the current Let's Encrypt terms of service.")
+	RootCmd.PersistentFlags().StringP("key-type", "k", "rsa2048", "Key type to use for private keys. Supported: rsa2048, rsa4096, rsa8192, ec256, ec384")
+	RootCmd.PersistentFlags().String("path", defaultPath, "Directory to use for storing the data")
+	RootCmd.PersistentFlags().StringSliceP("exclude", "x", nil, "Explicitly disallow solvers by name from being used. Solvers: \"http-01\", \"tls-sni-01\".")
+	RootCmd.PersistentFlags().String("webroot", "", "Set the webroot folder to use for HTTP based challenges to write directly in a file in .well-known/acme-challenge")
+	RootCmd.PersistentFlags().String("http", "", "Set the port and interface to use for HTTP based challenges to listen on. Supported: interface:port or :port")
+	RootCmd.PersistentFlags().String("tls", "", "Set the port and interface to use for TLS based challenges to listen on. Supported: interface:port or :port")
+	RootCmd.PersistentFlags().String("dns", "", "Solve a DNS challenge using the specified provider. Disables all other challenges. Run 'lego dnshelp' for help on usage.")
+}
+
+// initConfig reads in config file and ENV variables if set.
+func initConfig() {
+	if cfgFile != "" { // enable ability to specify config file via flag
+		viper.SetConfigFile(cfgFile)
+	}
+
+	viper.AddConfigPath("$HOME") // adding home directory as first search path
+	viper.AutomaticEnv()         // read in environment variables that match
+
+	// If a config file is found, read it in.
+	if err := viper.ReadInConfig(); err == nil {
+		fmt.Println("Using config file:", viper.ConfigFileUsed())
+	}
+}

cmd/run.go

@@ -0,0 +1,86 @@
+package cmd
+
+import (
+	"os"
+
+	"github.com/xenolf/lego/cmd/utils"
+	"github.com/spf13/cobra"
+)
+
+func runHandler(cmd *cobra.Command, args []string) {
+	conf, acc, client := utils.Setup(RootCmd)
+	if acc.Registration == nil {
+		reg, err := client.Register()
+		if err != nil {
+			logger().Fatalf("Could not complete registration\n\t%s", err.Error())
+		}
+
+		acc.Registration = reg
+		acc.Save()
+		email, err := RootCmd.PersistentFlags().GetString("email")
+		if err != nil {
+			logger().Fatalln(err.Error())
+		}
+		logger().Print("!!!! HEADS UP !!!!")
+		logger().Printf(`
+		Your account credentials have been saved in your Let's Encrypt
+		configuration directory at "%s".
+		You should make a secure backup	of this folder now. This
+		configuration directory will also contain certificates and
+		private keys obtained from Let's Encrypt so making regular
+		backups of this folder is ideal.`, conf.AccountPath(email))
+
+	}
+
+	// If the agreement URL is empty, the account still needs to accept the LE TOS.
+	if acc.Registration.Body.Agreement == "" {
+		utils.HandleTOS(RootCmd, client, acc)
+	}
+
+	domains, err := RootCmd.PersistentFlags().GetStringSlice("domains")
+	if err != nil {
+		logger().Fatalln(err.Error())
+	}
+
+	if len(domains) == 0 {
+		logger().Fatal("Please specify --domains or -d")
+	}
+
+	nobundle, err := cmd.PersistentFlags().GetBool("no-bundle")
+	if err != nil {
+		logger().Fatalln(err.Error())
+	}
+	cert, failures := client.ObtainCertificate(domains, !nobundle, nil)
+	if len(failures) > 0 {
+		for k, v := range failures {
+			logger().Printf("[%s] Could not obtain certificates\n\t%s", k, v.Error())
+		}
+
+		// Make sure to return a non-zero exit code if ObtainSANCertificate
+		// returned at least one error. Due to us not returning partial
+		// certificate we can just exit here instead of at the end.
+		os.Exit(1)
+	}
+
+	err = utils.CheckFolder(conf.CertPath())
+	if err != nil {
+		logger().Fatalf("Could not check/create path: %s", err.Error())
+	}
+
+	utils.SaveCertRes(cert, conf)
+}
+
+// runCmd represents the run command
+var runCmd = &cobra.Command{
+	Use:   "run",
+	Short: "Register an account, then create and install a certificate",
+	Long:  ``,
+	Run:   runHandler,
+}
+
+func init() {
+	RootCmd.AddCommand(runCmd)
+
+	runCmd.PersistentFlags().Bool("no-bundle", false, "Do not create a certificate bundle by adding the issuers certificate to the new certificate.")
+
+}

cmd/utils/account.go

@@ -1,4 +1,4 @@
-package main
+package utils
 
 import (
 	"crypto"
@@ -24,7 +24,7 @@ func NewAccount(email string, conf *Configuration) *Account {
 	accKeysPath := conf.AccountKeysPath(email)
 	// TODO: move to function in configuration?
 	accKeyPath := accKeysPath + string(os.PathSeparator) + email + ".key"
-	if err := checkFolder(accKeysPath); err != nil {
+	if err := CheckFolder(accKeysPath); err != nil {
 		logger().Fatalf("Could not check/create directory for account %s: %v", email, err)
 	}
 

cmd/utils/configuration.go

@@ -1,29 +1,34 @@
-package main
+package utils
 
 import (
 	"fmt"
+	"log"
 	"net/url"
 	"os"
 	"path"
 	"strings"
 
-	"github.com/codegangsta/cli"
+	"github.com/spf13/cobra"
 	"github.com/xenolf/lego/acme"
 )
 
 // Configuration type from CLI and config files.
 type Configuration struct {
-	context *cli.Context
+	context *cobra.Command
 }
 
 // NewConfiguration creates a new configuration from CLI data.
-func NewConfiguration(c *cli.Context) *Configuration {
+func NewConfiguration(c *cobra.Command) *Configuration {
 	return &Configuration{context: c}
 }
 
 // KeyType the type from which private keys should be generated
 func (c *Configuration) KeyType() (acme.KeyType, error) {
-	switch strings.ToUpper(c.context.GlobalString("key-type")) {
+	keytype, err := c.context.PersistentFlags().GetString("key-type")
+	if err != nil {
+		return "", err
+	}
+	switch strings.ToUpper(keytype) {
 	case "RSA2048":
 		return acme.RSA2048, nil
 	case "RSA4096":
@@ -36,12 +41,16 @@ func (c *Configuration) KeyType() (acme.KeyType, error) {
 		return acme.EC384, nil
 	}
 
-	return "", fmt.Errorf("Unsupported KeyType: %s", c.context.GlobalString("key-type"))
+	return "", fmt.Errorf("Unsupported KeyType: %s", keytype)
 }
 
 // ExcludedSolvers is a list of solvers that are to be excluded.
 func (c *Configuration) ExcludedSolvers() (cc []acme.Challenge) {
-	for _, s := range c.context.GlobalStringSlice("exclude") {
+	exclude, err := c.context.PersistentFlags().GetStringSlice("exclude")
+	if err != nil {
+		log.Fatalln(err.Error())
+	}
+	for _, s := range exclude {
 		cc = append(cc, acme.Challenge(s))
 	}
 	return
@@ -49,20 +58,32 @@ func (c *Configuration) ExcludedSolvers() (cc []acme.Challenge) {
 
 // ServerPath returns the OS dependent path to the data for a specific CA
 func (c *Configuration) ServerPath() string {
-	srv, _ := url.Parse(c.context.GlobalString("server"))
+    server, err := c.context.PersistentFlags().GetString("server")
+    if err != nil {
+        log.Fatalln(err.Error())
+    }
+	srv, _ := url.Parse(server)
 	srvStr := strings.Replace(srv.Host, ":", "_", -1)
 	return strings.Replace(srvStr, "/", string(os.PathSeparator), -1)
 }
 
 // CertPath gets the path for certificates.
 func (c *Configuration) CertPath() string {
-	return path.Join(c.context.GlobalString("path"), "certificates")
+    pathStr, err := c.context.PersistentFlags().GetString("path")
+    if err != nil {
+        log.Fatalln(err.Error())
+    }
+	return path.Join(pathStr, "certificates")
 }
 
 // AccountsPath returns the OS dependent path to the
 // local accounts for a specific CA
 func (c *Configuration) AccountsPath() string {
-	return path.Join(c.context.GlobalString("path"), "accounts", c.ServerPath())
+    pathStr, err := c.context.PersistentFlags().GetString("path")
+    if err != nil {
+        log.Fatalln(err.Error())
+    }
+	return path.Join(pathStr, "accounts", c.ServerPath())
 }
 
 // AccountPath returns the OS dependent path to a particular account

cmd/utils/crypto.go

@@ -1,4 +1,4 @@
-package main
+package utils
 
 import (
 	"crypto"

cmd/utils/utils.go

@@ -1,15 +1,15 @@
-package main
+package utils
 
 import (
 	"bufio"
 	"encoding/json"
 	"io/ioutil"
+	"log"
 	"os"
 	"path"
 	"strings"
-	"time"
 
-	"github.com/codegangsta/cli"
+	"github.com/spf13/cobra"
 	"github.com/xenolf/lego/acme"
 	"github.com/xenolf/lego/providers/dns/cloudflare"
 	"github.com/xenolf/lego/providers/dns/digitalocean"
@@ -24,43 +24,103 @@ import (
 	"github.com/xenolf/lego/providers/http/webroot"
 )
 
-func checkFolder(path string) error {
+var Logger *log.Logger
+
+func logger() *log.Logger {
+	if Logger == nil {
+		Logger = log.New(os.Stderr, "", log.LstdFlags)
+	}
+	return Logger
+}
+
+func CheckFolder(path string) error {
 	if _, err := os.Stat(path); os.IsNotExist(err) {
 		return os.MkdirAll(path, 0700)
 	}
 	return nil
 }
 
-func setup(c *cli.Context) (*Configuration, *Account, *acme.Client) {
+func SaveCertRes(certRes acme.CertificateResource, conf *Configuration) {
-	err := checkFolder(c.GlobalString("path"))
+	// We store the certificate, private key and metadata in different files
+	// as web servers would not be able to work with a combined file.
+	certOut := path.Join(conf.CertPath(), certRes.Domain+".crt")
+	privOut := path.Join(conf.CertPath(), certRes.Domain+".key")
+	metaOut := path.Join(conf.CertPath(), certRes.Domain+".json")
+
+	err := ioutil.WriteFile(certOut, certRes.Certificate, 0600)
+	if err != nil {
+		logger().Fatalf("Unable to save Certificate for domain %s\n\t%s", certRes.Domain, err.Error())
+	}
+
+	err = ioutil.WriteFile(privOut, certRes.PrivateKey, 0600)
+	if err != nil {
+		logger().Fatalf("Unable to save PrivateKey for domain %s\n\t%s", certRes.Domain, err.Error())
+	}
+
+	jsonBytes, err := json.MarshalIndent(certRes, "", "\t")
+	if err != nil {
+		logger().Fatalf("Unable to marshal CertResource for domain %s\n\t%s", certRes.Domain, err.Error())
+	}
+
+	err = ioutil.WriteFile(metaOut, jsonBytes, 0600)
+	if err != nil {
+		logger().Fatalf("Unable to save CertResource for domain %s\n\t%s", certRes.Domain, err.Error())
+	}
+}
+
+func Setup(c *cobra.Command) (*Configuration, *Account, *acme.Client) {
+	pathStr, err := c.PersistentFlags().GetString("path")
+	if err != nil {
+		logger().Fatalf(err.Error())
+	}
+	err = CheckFolder(pathStr)
 	if err != nil {
 		logger().Fatalf("Could not check/create path: %s", err.Error())
 	}
 
 	conf := NewConfiguration(c)
-	if len(c.GlobalString("email")) == 0 {
+
+	email, err := c.PersistentFlags().GetString("email")
+	if err != nil {
+		logger().Fatalln(err.Error())
+	}
+
+	if len(email) == 0 {
 		logger().Fatal("You have to pass an account (email address) to the program using --email or -m")
 	}
 
 	//TODO: move to account struct? Currently MUST pass email.
-	acc := NewAccount(c.GlobalString("email"), conf)
+	acc := NewAccount(email, conf)
 
 	keyType, err := conf.KeyType()
 	if err != nil {
 		logger().Fatal(err.Error())
 	}
 
-	client, err := acme.NewClient(c.GlobalString("server"), acc, keyType)
+	server, err := c.PersistentFlags().GetString("server")
+	if err != nil {
+		logger().Fatal(err.Error())
+	}
+	client, err := acme.NewClient(server, acc, keyType)
 	if err != nil {
 		logger().Fatalf("Could not create client: %s", err.Error())
 	}
 
-	if len(c.GlobalStringSlice("exclude")) > 0 {
+	excludeStr, err := c.PersistentFlags().GetStringSlice("exclude")
+	if err != nil {
+		logger().Fatal(err.Error())
+	}
+	if len(excludeStr) > 0 {
 		client.ExcludeChallenges(conf.ExcludedSolvers())
 	}
 
-	if c.GlobalIsSet("webroot") {
+	webrootStr, err := c.PersistentFlags().GetString("webroot")
-		provider, err := webroot.NewHTTPProvider(c.GlobalString("webroot"))
+	if err != nil {
+		logger().Fatal(err.Error())
+	}
+
+	if len(webrootStr) > 0 {
+		provider, err := webroot.NewHTTPProvider(webrootStr)
 		if err != nil {
 			logger().Fatal(err)
 		}
@@ -71,24 +131,39 @@ func setup(c *cli.Context) (*Configuration, *Account, *acme.Client) {
 		// infer that the user also wants to exclude all other challenges
 		client.ExcludeChallenges([]acme.Challenge{acme.DNS01, acme.TLSSNI01})
 	}
-	if c.GlobalIsSet("http") {
+
-		if strings.Index(c.GlobalString("http"), ":") == -1 {
+	httpStr, err := c.PersistentFlags().GetString("http")
+	if err != nil {
+		logger().Fatal(err.Error())
+	}
+	if len(httpStr) > 0 {
+		if strings.Index(httpStr, ":") == -1 {
 			logger().Fatalf("The --http switch only accepts interface:port or :port for its argument.")
 		}
-		client.SetHTTPAddress(c.GlobalString("http"))
+		client.SetHTTPAddress(httpStr)
 	}
 
-	if c.GlobalIsSet("tls") {
+	tls, err := c.PersistentFlags().GetString("tls")
-		if strings.Index(c.GlobalString("tls"), ":") == -1 {
+	if err != nil {
+		logger().Fatal(err.Error())
+	}
+
+	if len(tls) > 0 {
+		if strings.Index(tls, ":") == -1 {
 			logger().Fatalf("The --tls switch only accepts interface:port or :port for its argument.")
 		}
-		client.SetTLSAddress(c.GlobalString("tls"))
+		client.SetTLSAddress(tls)
 	}
 
-	if c.GlobalIsSet("dns") {
+	dns, err := c.PersistentFlags().GetString("dns")
+	if err != nil {
+		logger().Fatal(err.Error())
+	}
+
+	if len(dns) > 0 {
 		var err error
 		var provider acme.ChallengeProvider
-		switch c.GlobalString("dns") {
+		switch dns {
 		case "cloudflare":
 			provider, err = cloudflare.NewDNSProvider()
 		case "digitalocean":
@@ -127,37 +202,14 @@ func setup(c *cli.Context) (*Configuration, *Account, *acme.Client) {
 	return conf, acc, client
 }
 
-func saveCertRes(certRes acme.CertificateResource, conf *Configuration) {
+func HandleTOS(c *cobra.Command, client *acme.Client, acc *Account) {
-	// We store the certificate, private key and metadata in different files
-	// as web servers would not be able to work with a combined file.
-	certOut := path.Join(conf.CertPath(), certRes.Domain+".crt")
-	privOut := path.Join(conf.CertPath(), certRes.Domain+".key")
-	metaOut := path.Join(conf.CertPath(), certRes.Domain+".json")
-
-	err := ioutil.WriteFile(certOut, certRes.Certificate, 0600)
-	if err != nil {
-		logger().Fatalf("Unable to save Certificate for domain %s\n\t%s", certRes.Domain, err.Error())
-	}
-
-	err = ioutil.WriteFile(privOut, certRes.PrivateKey, 0600)
-	if err != nil {
-		logger().Fatalf("Unable to save PrivateKey for domain %s\n\t%s", certRes.Domain, err.Error())
-	}
-
-	jsonBytes, err := json.MarshalIndent(certRes, "", "\t")
-	if err != nil {
-		logger().Fatalf("Unable to marshal CertResource for domain %s\n\t%s", certRes.Domain, err.Error())
-	}
-
-	err = ioutil.WriteFile(metaOut, jsonBytes, 0600)
-	if err != nil {
-		logger().Fatalf("Unable to save CertResource for domain %s\n\t%s", certRes.Domain, err.Error())
-	}
-}
-
-func handleTOS(c *cli.Context, client *acme.Client, acc *Account) {
 	// Check for a global accept override
-	if c.GlobalBool("accept-tos") {
+	accepttos, err := c.PersistentFlags().GetBool("accept-tos")
+	if err != nil {
+		logger().Fatalf(err.Error())
+	}
+
+	if accepttos {
 		err := client.AgreeToTOS()
 		if err != nil {
 			logger().Fatalf("Could not agree to TOS: %s", err.Error())
@@ -195,139 +247,3 @@ func handleTOS(c *cli.Context, client *acme.Client, acc *Account) {
 		logger().Println("Your input was invalid. Please answer with one of Y/y, n or by pressing enter.")
 	}
 }
-
-func run(c *cli.Context) {
-	conf, acc, client := setup(c)
-	if acc.Registration == nil {
-		reg, err := client.Register()
-		if err != nil {
-			logger().Fatalf("Could not complete registration\n\t%s", err.Error())
-		}
-
-		acc.Registration = reg
-		acc.Save()
-
-		logger().Print("!!!! HEADS UP !!!!")
-		logger().Printf(`
-		Your account credentials have been saved in your Let's Encrypt
-		configuration directory at "%s".
-		You should make a secure backup	of this folder now. This
-		configuration directory will also contain certificates and
-		private keys obtained from Let's Encrypt so making regular
-		backups of this folder is ideal.`, conf.AccountPath(c.GlobalString("email")))
-
-	}
-
-	// If the agreement URL is empty, the account still needs to accept the LE TOS.
-	if acc.Registration.Body.Agreement == "" {
-		handleTOS(c, client, acc)
-	}
-
-	if len(c.GlobalStringSlice("domains")) == 0 {
-		logger().Fatal("Please specify --domains or -d")
-	}
-
-	cert, failures := client.ObtainCertificate(c.GlobalStringSlice("domains"), !c.Bool("no-bundle"), nil)
-	if len(failures) > 0 {
-		for k, v := range failures {
-			logger().Printf("[%s] Could not obtain certificates\n\t%s", k, v.Error())
-		}
-
-		// Make sure to return a non-zero exit code if ObtainSANCertificate
-		// returned at least one error. Due to us not returning partial
-		// certificate we can just exit here instead of at the end.
-		os.Exit(1)
-	}
-
-	err := checkFolder(conf.CertPath())
-	if err != nil {
-		logger().Fatalf("Could not check/create path: %s", err.Error())
-	}
-
-	saveCertRes(cert, conf)
-}
-
-func revoke(c *cli.Context) {
-
-	conf, _, client := setup(c)
-
-	err := checkFolder(conf.CertPath())
-	if err != nil {
-		logger().Fatalf("Could not check/create path: %s", err.Error())
-	}
-
-	for _, domain := range c.GlobalStringSlice("domains") {
-		logger().Printf("Trying to revoke certificate for domain %s", domain)
-
-		certPath := path.Join(conf.CertPath(), domain+".crt")
-		certBytes, err := ioutil.ReadFile(certPath)
-
-		err = client.RevokeCertificate(certBytes)
-		if err != nil {
-			logger().Fatalf("Error while revoking the certificate for domain %s\n\t%s", domain, err.Error())
-		} else {
-			logger().Print("Certificate was revoked.")
-		}
-	}
-}
-
-func renew(c *cli.Context) {
-	conf, _, client := setup(c)
-
-	if len(c.GlobalStringSlice("domains")) <= 0 {
-		logger().Fatal("Please specify at least one domain.")
-	}
-
-	domain := c.GlobalStringSlice("domains")[0]
-
-	// load the cert resource from files.
-	// We store the certificate, private key and metadata in different files
-	// as web servers would not be able to work with a combined file.
-	certPath := path.Join(conf.CertPath(), domain+".crt")
-	privPath := path.Join(conf.CertPath(), domain+".key")
-	metaPath := path.Join(conf.CertPath(), domain+".json")
-
-	certBytes, err := ioutil.ReadFile(certPath)
-	if err != nil {
-		logger().Fatalf("Error while loading the certificate for domain %s\n\t%s", domain, err.Error())
-	}
-
-	if c.IsSet("days") {
-		expTime, err := acme.GetPEMCertExpiration(certBytes)
-		if err != nil {
-			logger().Printf("Could not get Certification expiration for domain %s", domain)
-		}
-
-		if int(expTime.Sub(time.Now()).Hours()/24.0) > c.Int("days") {
-			return
-		}
-	}
-
-	metaBytes, err := ioutil.ReadFile(metaPath)
-	if err != nil {
-		logger().Fatalf("Error while loading the meta data for domain %s\n\t%s", domain, err.Error())
-	}
-
-	var certRes acme.CertificateResource
-	err = json.Unmarshal(metaBytes, &certRes)
-	if err != nil {
-		logger().Fatalf("Error while marshalling the meta data for domain %s\n\t%s", domain, err.Error())
-	}
-
-	if c.Bool("reuse-key") {
-		keyBytes, err := ioutil.ReadFile(privPath)
-		if err != nil {
-			logger().Fatalf("Error while loading the private key for domain %s\n\t%s", domain, err.Error())
-		}
-		certRes.PrivateKey = keyBytes
-	}
-
-	certRes.Certificate = certBytes
-
-	newCert, err := client.RenewCertificate(certRes, !c.Bool("no-bundle"))
-	if err != nil {
-		logger().Fatalf("%s", err.Error())
-	}
-
-	saveCertRes(newCert, conf)
-}

cmd/version.go

@@ -0,0 +1,22 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+// versionCmd represents the version command
+var versionCmd = &cobra.Command{
+	Use:   "version",
+	Short: "Prints current version of lego",
+	Long: ``,
+	Run: func(cmd *cobra.Command, args []string) {
+		// TODO: Work your own magic here
+		fmt.Println("lego version", version)
+	},
+}
+
+func init() {
+	RootCmd.AddCommand(versionCmd)
+}

main.go

@@ -0,0 +1,7 @@
+package main
+
+import "github.com/xenolf/lego/cmd"
+
+func main() {
+	cmd.Execute()
+}