118 lines
2.5 KiB
Go
118 lines
2.5 KiB
Go
package main
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import (
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"flag"
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"fmt"
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"os"
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"strings"
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"go.jolheiser.com/go-spectre"
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)
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func main() {
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pw, err := doMain(os.Args[1:])
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if err != nil {
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fmt.Println(err)
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return
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}
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fmt.Println(pw)
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}
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func doMain(args []string) (string, error) {
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fs := flag.NewFlagSet("spectre", flag.ExitOnError)
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fs.Usage = func() {
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fmt.Fprintln(fs.Output(), "spectre [FLAGS] [site]")
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fs.PrintDefaults()
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}
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usernameFlag := fs.String("username", "", "username")
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secretFlag := fs.String("secret", "", "secret")
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counterFlag := fs.Int("counter", 1, "counter")
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scoperFlag := fs.String("scoper", "com.lyndir.masterpassword", "scoper base")
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scopeFlag := spectre.Authentication
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fs.Func("scope", "scope", func(s string) (err error) {
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scopeFlag, err = spectre.ParseScope(s)
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return
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})
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var templateFlag spectre.Template
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fs.Func("template", "template", func(s string) (err error) {
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templateFlag, err = spectre.ParseTemplate(s)
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return
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})
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if err := fs.Parse(args); err != nil {
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return "", err
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}
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if err := checkEnv(fs); err != nil {
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return "", err
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}
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if templateFlag == "" {
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templateFlag = scopeFlag.DefaultTemplate()
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}
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if *usernameFlag == "" || *secretFlag == "" || fs.NArg() < 1 {
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return "", requiredArgs{
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missingUsername: *usernameFlag == "",
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missingSecret: *secretFlag == "",
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missingSite: fs.NArg() < 1,
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}
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}
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s, err := spectre.New(*usernameFlag, *secretFlag, spectre.WithScoper(spectre.SimpleScoper{
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Key: *scoperFlag,
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}))
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if err != nil {
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return "", err
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}
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return s.Site(fs.Arg(0),
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spectre.WithScope(scopeFlag),
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spectre.WithTemplate(templateFlag),
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spectre.WithCounter(*counterFlag),
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), nil
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}
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type requiredArgs struct {
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missingUsername bool
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missingSecret bool
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missingSite bool
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}
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func (r requiredArgs) Error() string {
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s := "--username, --secret, and <site-name> are required, missing: "
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if r.missingUsername {
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s += "\n- username"
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}
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if r.missingSecret {
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s += "\n- secret"
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}
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if r.missingSite {
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s += "\n- site name"
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}
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return s
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}
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func checkEnv(fs *flag.FlagSet) error {
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provided := map[string]struct{}{}
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fs.Visit(func(f *flag.Flag) {
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provided[f.Name] = struct{}{}
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})
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var visitErr error
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fs.VisitAll(func(f *flag.Flag) {
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if visitErr != nil {
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return
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}
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if _, ok := provided[f.Name]; ok {
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return
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}
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env := os.Getenv(fmt.Sprintf("SPECTRE_%s", strings.ToUpper(f.Name)))
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if env == "" {
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return
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}
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if err := fs.Set(f.Name, env); err != nil {
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visitErr = fmt.Errorf("could not set flag %q to %q", f.Name, env)
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}
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})
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return nil
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}
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