/
main.go
97 lines (75 loc) · 1.86 KB
/
main.go
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package main
import (
"flag"
"fmt"
"log"
"os"
"strings"
)
var accountKeyFile string
// Command is based on the Command struct from cmd/go
type Command struct {
Run func(cmd *Command, args []string)
UsageLine string
Long string
Flag flag.FlagSet
}
// Name returns the command's name: the first word in the usage line.
func (c *Command) Name() string {
name := c.UsageLine
i := strings.Index(name, " ")
if i >= 0 {
name = name[:i]
}
return name
}
func (c *Command) Usage() {
fmt.Fprintf(os.Stderr, "usage: %s\n\n", c.UsageLine)
fmt.Fprintf(os.Stderr, "%s\n", strings.TrimSpace(c.Long))
os.Exit(2)
}
var commands = []*Command{
cmdRegister,
cmdAuthorize,
cmdCert,
}
func main() {
flag.Usage = usage
flag.Parse()
log.SetFlags(0)
args := flag.Args()
if len(args) < 1 {
usage()
}
for _, cmd := range commands {
if cmd.Name() == args[0] {
cmd.Flag.Usage = func() { cmd.Usage() }
cmd.Flag.Parse(args[1:])
args = cmd.Flag.Args()
cmd.Run(cmd, args)
os.Exit(0)
}
}
fmt.Fprintf(os.Stderr, "acme-nano: unknown subcommand %q\nRun 'acme-nano -h' for usage.\n", args[0])
os.Exit(1)
}
var usageText = `acme-nano is a tool for generating HTTPS certificates.
Usage:
acme-nano command [arguments]
The commands are:
register register account on the ACME server
authorize authorize account to manage domains
cert generate signed certificates
Use "acme-nano command -h" for more information about a command.
Getting started (one-time setup):
Register an account:
$ acme-nano register -account acme.key -email admin@example.com
Authorize account to manage your domain:
$ sudo acme-nano authorize -account acme.key -domain example.com
Generate a certificate (run this in a monthly cronjob):
$ acme-nano cert -account acme.key -domain example.com -chain
`
func usage() {
fmt.Fprintln(os.Stderr, usageText)
os.Exit(2)
}