stuff, but also things

trunk
vilmibm 2023-03-04 01:15:09 +00:00
parent 015b28ba6a
commit df4eeaba13
5 changed files with 194 additions and 1 deletions

1
.gitignore vendored
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@ -6,3 +6,4 @@ cmd/visit/visit
cmd/signup/signup
cmd/review/review
cmd/welcome/welcome
cmd/createkeyfile/createkeyfile

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@ -0,0 +1,10 @@
package main
import "fmt"
// TODO this command adds a new user to /town/var/town.db
// it's meant to be invoked by the welcome binary upon successfully creating a new user account
func main() {
fmt.Println("lol")
}

159
cmd/welcome/form.go 100644
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@ -0,0 +1,159 @@
package main
import (
"errors"
"fmt"
"net/mail"
"regexp"
"strings"
"git.tilde.town/tildetown/town/invites"
"git.tilde.town/tildetown/town/sshkey"
"git.tilde.town/tildetown/town/stats"
"github.com/AlecAivazis/survey/v2"
"github.com/charmbracelet/lipgloss"
)
func surveyIconSet(icons *survey.IconSet) {
icons.Question.Text = "~"
icons.Question.Format = "magenta:b"
}
func promptCode() (code string, err error) {
err = survey.AskOne(&survey.Input{
Message: "invite code?",
}, &code,
survey.WithValidator(survey.Required),
survey.WithIcons(surveyIconSet))
code = strings.TrimSpace(code)
return
}
func confirmContinue() (conf bool, err error) {
err = survey.AskOne(
&survey.Confirm{
Message: "Does the above look ok?",
}, &conf,
survey.WithValidator(survey.Required),
survey.WithIcons(surveyIconSet))
return
}
type asker struct {
UserData *newUserData
Style lipgloss.Style
Invite invites.Invite
TownData stats.TildeData
}
func (a *asker) Ask() (err error) {
// TODO somehow un and email getting set to "" but pubkey works fine?
if err = a.promptUsername(); err != nil {
return err
}
if err = a.promptEmail(); err != nil {
return err
}
if err = a.promptKey(); err != nil {
return err
}
s := a.Style.SetString(
fmt.Sprintf(`ok! your account is about to be created with the following details:
username: %s
email: %s
pubkey: %s`, a.UserData.Username, a.UserData.Email, a.UserData.PubKey)).Bold(true).MaxWidth(80)
fmt.Println(s)
return nil
}
func (a *asker) promptUsername() (err error) {
// copied from /etc/adduser.conf
usernameRE := regexp.MustCompile(`^[a-z][-a-z0-9_]*$`)
err = survey.AskOne(
&survey.Input{
Message: "desired username?",
Default: a.UserData.Username,
}, &a.UserData.Username,
survey.WithValidator(survey.Required),
survey.WithIcons(surveyIconSet),
survey.WithValidator(func(val interface{}) error {
un := val.(string)
if len(un) > 32 {
return fmt.Errorf("username '%s' is too long", un)
}
return nil
}),
survey.WithValidator(func(val interface{}) error {
un := val.(string)
if !usernameRE.MatchString(un) {
return errors.New("usernames must start with a letter and only contain letters, nubers, - or _")
}
return nil
}),
survey.WithValidator(func(val interface{}) error {
un := val.(string)
for _, v := range a.TownData.Users {
if v.Username == un {
return fmt.Errorf("username '%s' is already in use", un)
}
}
return nil
}))
return
}
func (a *asker) promptEmail() (err error) {
err = survey.AskOne(
&survey.Input{
Message: "e-mail (for account recovery only)?",
Default: a.UserData.Email,
}, &a.UserData.Email,
survey.WithValidator(survey.Required),
survey.WithIcons(surveyIconSet),
survey.WithValidator(func(val interface{}) error {
email := val.(string)
_, err := mail.ParseAddress(email)
if err != nil {
return fmt.Errorf("'%s' doesn't look like an email: %w", email, err)
}
if !strings.Contains(email, ".") {
return fmt.Errorf("'%s' doesn't look like an email: domain not fully qualified", email)
}
return nil
}))
return
}
func (a *asker) promptKey() (err error) {
err = survey.AskOne(
&survey.Input{
Message: "SSH public key?",
Default: a.UserData.PubKey,
}, &a.UserData.PubKey,
survey.WithValidator(survey.Required),
survey.WithIcons(surveyIconSet),
survey.WithValidator(func(v interface{}) error {
key := v.(string)
valid, err := sshkey.ValidKey(key)
if err != nil {
return fmt.Errorf("failed to validate key: %w", err)
}
if !valid {
return errors.New("that doesn't seem like a valid SSH key. try another public key?")
}
return nil
}))
return
}

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@ -131,7 +131,7 @@ if you end up very stuck, you can email root@tilde.town .`, data.Username))
fmt.Println(s)
// TODO mark invite as used
// TODO add user to town.db
// TODO invoke helper to add user to town.db
return nil
}

23
sshkey/sshkey.go 100644
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@ -0,0 +1,23 @@
package sshkey
import (
"bytes"
"errors"
"os/exec"
)
const skgpath = "/usr/bin/ssh-keygen"
func ValidKey(key string) (valid bool, err error) {
cmd := exec.Command(skgpath, "-l", "-f", "-")
cmd.Stdin = bytes.NewBuffer([]byte(key))
err = cmd.Run()
if err == nil {
valid = true
} else if errors.Is(&exec.ExitError{}, err) {
err = nil
}
return
}