open-vault/vendor/github.com/boombuler/barcode/qr/alphanumeric.go
mymercurialsky 4c0e3c5d2f Implemented TOTP Secret Backend (#2492)
* Initialized basic outline of TOTP backend using Postgresql backend as template

* Updated TOTP backend.go's structure and help string

* Updated TOTP path_roles.go's structure and help strings

* Updated TOTP path_role_create.go's structure and help strings

* Fixed typo in path_roles.go

* Fixed errors in path_role_create.go and path_roles.go

* Added TOTP secret backend information to cli commands

* Fixed build errors in path_roles.go and path_role_create.go

* Changed field values of period and digits from uint to int, added uint conversion of period when generating passwords

* Initialized TOTP test file based on structure of postgresql test file

* Added enforcement of input values

* Added otp library to vendor folder

* Added test steps and cleaned up errors

* Modified read credential test step, not working yet

* Use of vendored package not allowed - Test error

* Removed vendor files for TOTP library

* Revert "Removed vendor files for TOTP library"

This reverts commit fcd030994bc1741dbf490f3995944e091b11da61.

* Hopefully fixed vendor folder issue with TOTP Library

* Added additional tests for TOTP backend

* Cleaned up comments in TOTP backend_test.go

* Added default values of period, algorithm and digits to field schema

* Changed account_name and issuer fields to optional

* Removed MD5 as a hash algorithm option

* Implemented requested pull request changes

* Added ability to validate TOTP codes

* Added ability to have a key generated

* Added skew, qr size and key size parameters

* Reset vendor.json prior to merge

* Readded otp and barcode libraries to vendor.json

* Modified help strings for path_role_create.go

* Fixed test issue in testAccStepReadRole

* Cleaned up error formatting, variable names and path names. Also added some additional documentation

* Moveed barcode and url output to key creation function and did some additional cleanup based on requested changes

* Added ability to pass in TOTP urls

* Added additional tests for TOTP server functions

* Removed unused QRSize, URL and Generate members of keyEntry struct

* Removed unnecessary urlstring variable from pathKeyCreate

* Added website documentation for TOTP secret backend

* Added errors if generate is true and url or key is passed, removed logger from backend, and revised parameter documentation.

* Updated website documentation and added QR example

* Added exported variable and ability to disable QR generation, cleaned up error reporting, changed default skew value, updated documentation and added additional tests

* Updated API documentation to inlude to exported variable and qr size option

* Cleaned up return statements in path_code, added error handling while validating codes and clarified documentation for generate parameters in path_keys
2017-05-04 10:49:42 -07:00

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
}