mirror of
https://github.com/go-gitea/gitea
synced 2024-12-25 01:54:26 +00:00
6dd096b7f0
* Initial commit for 2FA support Signed-off-by: Andrew <write@imaginarycode.com> * Add vendored files * Add missing depends * A few clean ups * Added improvements, proper encryption * Better encryption key * Simplify "key" generation * Make 2FA enrollment page more robust * Fix typo * Rename twofa/2FA to TwoFactor * UNIQUE INDEX -> UNIQUE
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
|
|
}
|