forgot to add these

vilmibm 2023-10-25 02:41:02 +00:00
parent bf244101e6
commit 529e14158a
2 changed files with 87 additions and 0 deletions

40
cmd/help/email.go 100644
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@ -0,0 +1,40 @@
package main
import (
"fmt"
"git.tilde.town/tildetown/town/email"
"git.tilde.town/tildetown/town/towndb"
)
const emailText = `hello!
You (hopefully) requested to add a new public key to your tilde.town account.
If you didn't, feel free to ignore this email (or report it to an admin).
If you did, here is your auth code: %s
To use this code, please open a terminal and run:
ssh help@tilde.town
Follow the instructions there to add your new key and restore access to your account.
best,
~vilmibm`
func sendAuthCodeEmail(ac towndb.AuthCode) error {
pw, err := email.LoadPassword()
if err != nil {
return err
}
body := fmt.Sprintf(emailText, ac.Code)
mailer := email.NewExternalMailer(pw)
return mailer.Send(
ac.Email,
"Adding a new tilde.town public key",
body)
}

47
codes/codes.go 100644
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package codes
import (
"crypto/rand"
"encoding/base64"
"math/big"
"strings"
)
const codeLen = 32
func NewCode(email string) string {
charset := "abcdefghijklmnopqrztuvwxyz"
charset += strings.ToUpper(charset)
charset += "0123456789"
charset += "`~!@#$%^&*()-=_+[]{}|;:,./<>?"
code := []byte{}
max := big.NewInt(int64(len(charset)))
for len(code) < codeLen {
ix, err := rand.Int(rand.Reader, max)
if err != nil {
// TODO this is bad but I'm just kind of hoping it doesn't happen...often
panic(err)
}
code = append(code, charset[ix.Int64()])
}
code = append(code, ' ')
eb := []byte(email)
for x := 0; x < len(eb); x++ {
code = append(code, eb[x])
}
return base64.StdEncoding.EncodeToString(code)
}
func Decode(code string) ([]string, error) {
decoded, err := base64.StdEncoding.DecodeString(code)
if err != nil {
return nil, err
}
return strings.Split(string(decoded), " "), nil
}