konrad
24904585a2
All checks were successful
continuous-integration/drone/push Build is passing
Fix user tests Add swagger docs Fix lint Add totp check when logging in Make totp enrollment work Add migration for totp table go mod vendor Add routes for totp routes Add route handler for totp routes Add basic implementation to enroll a user in totp Co-authored-by: kolaente <k@knt.li> Reviewed-on: vikunja/api#383
67 lines
1.4 KiB
Go
67 lines
1.4 KiB
Go
package qr
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"strings"
|
|
|
|
"github.com/boombuler/barcode/utils"
|
|
)
|
|
|
|
const charSet string = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ $%*+-./:"
|
|
|
|
func stringToAlphaIdx(content string) <-chan int {
|
|
result := make(chan int)
|
|
go func() {
|
|
for _, r := range content {
|
|
idx := strings.IndexRune(charSet, r)
|
|
result <- idx
|
|
if idx < 0 {
|
|
break
|
|
}
|
|
}
|
|
close(result)
|
|
}()
|
|
|
|
return result
|
|
}
|
|
|
|
func encodeAlphaNumeric(content string, ecl ErrorCorrectionLevel) (*utils.BitList, *versionInfo, error) {
|
|
|
|
contentLenIsOdd := len(content)%2 == 1
|
|
contentBitCount := (len(content) / 2) * 11
|
|
if contentLenIsOdd {
|
|
contentBitCount += 6
|
|
}
|
|
vi := findSmallestVersionInfo(ecl, alphaNumericMode, contentBitCount)
|
|
if vi == nil {
|
|
return nil, nil, errors.New("To much data to encode")
|
|
}
|
|
|
|
res := new(utils.BitList)
|
|
res.AddBits(int(alphaNumericMode), 4)
|
|
res.AddBits(len(content), vi.charCountBits(alphaNumericMode))
|
|
|
|
encoder := stringToAlphaIdx(content)
|
|
|
|
for idx := 0; idx < len(content)/2; idx++ {
|
|
c1 := <-encoder
|
|
c2 := <-encoder
|
|
if c1 < 0 || c2 < 0 {
|
|
return nil, nil, fmt.Errorf("\"%s\" can not be encoded as %s", content, AlphaNumeric)
|
|
}
|
|
res.AddBits(c1*45+c2, 11)
|
|
}
|
|
if contentLenIsOdd {
|
|
c := <-encoder
|
|
if c < 0 {
|
|
return nil, nil, fmt.Errorf("\"%s\" can not be encoded as %s", content, AlphaNumeric)
|
|
}
|
|
res.AddBits(c, 6)
|
|
}
|
|
|
|
addPaddingAndTerminator(res, vi)
|
|
|
|
return res, vi, nil
|
|
}
|