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Signed-off-by: m.nabokikh <maksim.nabokikh@flant.com>
This commit is contained in:
m.nabokikh 2020-10-18 01:54:27 +04:00
parent 4d63e9cd68
commit 1d83e4749d
17 changed files with 99 additions and 97 deletions
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2
.golangci.yml
View file

@ -19,6 +19,7 @@ linters:
- goimports
- golint
- gosimple
- gocritic
- govet
- ineffassign
- interfacer
@ -40,6 +41,5 @@ linters:
# - gocyclo
# - lll
# - goconst
# - gocritic
# - errcheck
# - dupl

2
cmd/dex/config.go
View file

@ -49,7 +49,7 @@ type Config struct {
StaticPasswords []password `json:"staticPasswords"`
}
//Validate the configuration
// Validate the configuration
func (c Config) Validate() error {
// Fast checks. Perform these first for a more responsive CLI.
checks := []struct {

2
connector/authproxy/authproxy.go
View file

@ -34,7 +34,7 @@ func (m *callback) LoginURL(s connector.Scopes, callbackURL, state string) (stri
if err != nil {
return "", fmt.Errorf("failed to parse callbackURL %q: %v", callbackURL, err)
}
u.Path = u.Path + m.pathSuffix
u.Path += m.pathSuffix
v := u.Query()
v.Set("state", state)
u.RawQuery = v.Encode()

7
connector/github/github.go
View file

@ -334,11 +334,12 @@ func (c *githubConnector) Refresh(ctx context.Context, s connector.Scopes, ident
// getGroups retrieves GitHub orgs and teams a user is in, if any.
func (c *githubConnector) getGroups(ctx context.Context, client *http.Client, groupScope bool, userLogin string) ([]string, error) {
if len(c.orgs) > 0 {
switch {
case len(c.orgs) > 0:
return c.groupsForOrgs(ctx, client, userLogin)
} else if c.org != "" {
case c.org != "":
return c.teamsForOrg(ctx, client, c.org)
} else if groupScope && c.loadAllGroups {
case groupScope && c.loadAllGroups:
return c.userGroups(ctx, client)
}
return nil, nil

6
connector/ldap/ldap.go
View file

@ -188,7 +188,7 @@ func parseScope(s string) (int, bool) {
// See "Config.GroupSearch.UserMatchers" comments for the details
func (c *ldapConnector) userMatchers() []UserMatcher {
if len(c.GroupSearch.UserMatchers) > 0 && c.GroupSearch.UserMatchers[0].UserAttr != "" {
return c.GroupSearch.UserMatchers[:]
return c.GroupSearch.UserMatchers
}
return []UserMatcher{
@ -245,9 +245,9 @@ func (c *Config) openConnector(logger log.Logger) (*ldapConnector, error) {
if host, _, err = net.SplitHostPort(c.Host); err != nil {
host = c.Host
if c.InsecureNoSSL {
c.Host = c.Host + ":389"
c.Host += ":389"
} else {
c.Host = c.Host + ":636"
c.Host += ":636"
}
}

2
server/api_test.go
View file

@ -291,7 +291,7 @@ func TestRefreshToken(t *testing.T) {
t.Errorf("failed to marshal offline session ID: %v", err)
}
//Testing the api.
// Testing the api.
listReq := api.ListRefreshReq{
UserId: subjectString,
}

38
server/deviceflowhandlers.go
View file

@ -15,17 +15,17 @@ import (
)
type deviceCodeResponse struct {
//The unique device code for device authentication
// The unique device code for device authentication
DeviceCode string `json:"device_code"`
//The code the user will exchange via a browser and log in
// The code the user will exchange via a browser and log in
UserCode string `json:"user_code"`
//The url to verify the user code.
// The url to verify the user code.
VerificationURI string `json:"verification_uri"`
//The verification uri with the user code appended for pre-filling form
// The verification uri with the user code appended for pre-filling form
VerificationURIComplete string `json:"verification_uri_complete"`
//The lifetime of the device code
// The lifetime of the device code
ExpireTime int `json:"expires_in"`
//How often the device is allowed to poll to verify that the user login occurred
// How often the device is allowed to poll to verify that the user login occurred
PollInterval int `json:"interval"`
}
@ -66,27 +66,27 @@ func (s *Server) handleDeviceCode(w http.ResponseWriter, r *http.Request) {
return
}
//Get the client id and scopes from the post
// Get the client id and scopes from the post
clientID := r.Form.Get("client_id")
clientSecret := r.Form.Get("client_secret")
scopes := strings.Fields(r.Form.Get("scope"))
s.logger.Infof("Received device request for client %v with scopes %v", clientID, scopes)
//Make device code
// Make device code
deviceCode := storage.NewDeviceCode()
//make user code
// make user code
userCode, err := storage.NewUserCode()
if err != nil {
s.logger.Errorf("Error generating user code: %v", err)
s.tokenErrHelper(w, errInvalidRequest, "", http.StatusInternalServerError)
}
//Generate the expire time
// Generate the expire time
expireTime := time.Now().Add(s.deviceRequestsValidFor)
//Store the Device Request
// Store the Device Request
deviceReq := storage.DeviceRequest{
UserCode: userCode,
DeviceCode: deviceCode,
@ -102,7 +102,7 @@ func (s *Server) handleDeviceCode(w http.ResponseWriter, r *http.Request) {
return
}
//Store the device token
// Store the device token
deviceToken := storage.DeviceToken{
DeviceCode: deviceCode,
Status: deviceTokenPending,
@ -176,7 +176,7 @@ func (s *Server) handleDeviceToken(w http.ResponseWriter, r *http.Request) {
now := s.now()
//Grab the device token, check validity
// Grab the device token, check validity
deviceToken, err := s.storage.GetDeviceToken(deviceCode)
if err != nil {
if err != storage.ErrNotFound {
@ -189,13 +189,13 @@ func (s *Server) handleDeviceToken(w http.ResponseWriter, r *http.Request) {
return
}
//Rate Limiting check
// Rate Limiting check
slowDown := false
pollInterval := deviceToken.PollIntervalSeconds
minRequestTime := deviceToken.LastRequestTime.Add(time.Second * time.Duration(pollInterval))
if now.Before(minRequestTime) {
slowDown = true
//Continually increase the poll interval until the user waits the proper time
// Continually increase the poll interval until the user waits the proper time
pollInterval += 5
} else {
pollInterval = 5
@ -255,7 +255,7 @@ func (s *Server) handleDeviceCallback(w http.ResponseWriter, r *http.Request) {
return
}
//Grab the device request from storage
// Grab the device request from storage
deviceReq, err := s.storage.GetDeviceRequest(userCode)
if err != nil || s.now().After(deviceReq.Expiry) {
errCode := http.StatusBadRequest
@ -289,7 +289,7 @@ func (s *Server) handleDeviceCallback(w http.ResponseWriter, r *http.Request) {
return
}
//Grab the device token from storage
// Grab the device token from storage
old, err := s.storage.GetDeviceToken(deviceReq.DeviceCode)
if err != nil || s.now().After(old.Expiry) {
errCode := http.StatusBadRequest
@ -353,7 +353,7 @@ func (s *Server) verifyUserCode(w http.ResponseWriter, r *http.Request) {
userCode = strings.ToUpper(userCode)
//Find the user code in the available requests
// Find the user code in the available requests
deviceRequest, err := s.storage.GetDeviceRequest(userCode)
if err != nil || s.now().After(deviceRequest.Expiry) {
if err != nil && err != storage.ErrNotFound {
@ -366,7 +366,7 @@ func (s *Server) verifyUserCode(w http.ResponseWriter, r *http.Request) {
return
}
//Redirect to Dex Auth Endpoint
// Redirect to Dex Auth Endpoint
authURL := path.Join(s.issuerURL.Path, "/auth")
u, err := url.Parse(authURL)
if err != nil {

10
server/deviceflowhandlers_test.go
View file

@ -24,7 +24,7 @@ func TestDeviceVerificationURI(t *testing.T) {
defer cancel()
// Setup a dex server.
httpServer, s := newTestServer(ctx, t, func(c *Config) {
c.Issuer = c.Issuer + "/non-root-path"
c.Issuer += "/non-root-path"
c.Now = now
})
defer httpServer.Close()
@ -76,7 +76,7 @@ func TestHandleDeviceCode(t *testing.T) {
// Setup a dex server.
httpServer, s := newTestServer(ctx, t, func(c *Config) {
c.Issuer = c.Issuer + "/non-root-path"
c.Issuer += "/non-root-path"
c.Now = now
})
defer httpServer.Close()
@ -322,7 +322,7 @@ func TestDeviceCallback(t *testing.T) {
// Setup a dex server.
httpServer, s := newTestServer(ctx, t, func(c *Config) {
//c.Issuer = c.Issuer + "/non-root-path"
// c.Issuer = c.Issuer + "/non-root-path"
c.Now = now
})
defer httpServer.Close()
@ -506,7 +506,7 @@ func TestDeviceTokenResponse(t *testing.T) {
// Setup a dex server.
httpServer, s := newTestServer(ctx, t, func(c *Config) {
c.Issuer = c.Issuer + "/non-root-path"
c.Issuer += "/non-root-path"
c.Now = now
})
defer httpServer.Close()
@ -637,7 +637,7 @@ func TestVerifyCodeResponse(t *testing.T) {
// Setup a dex server.
httpServer, s := newTestServer(ctx, t, func(c *Config) {
c.Issuer = c.Issuer + "/non-root-path"
c.Issuer += "/non-root-path"
c.Now = now
})
defer httpServer.Close()

36
server/handlers.go
View file

@ -505,7 +505,7 @@ func (s *Server) finalizeLogin(identity connector.Identity, authReq storage.Auth
email := claims.Email
if !claims.EmailVerified {
email = email + " (unverified)"
email += " (unverified)"
}
s.logger.Infof("login successful: connector %q, username=%q, preferred_username=%q, email=%q, groups=%q",
@ -518,7 +518,8 @@ func (s *Server) finalizeLogin(identity connector.Identity, authReq storage.Auth
}
// Try to retrieve an existing OfflineSession object for the corresponding user.
if session, err := s.storage.GetOfflineSessions(identity.UserID, authReq.ConnectorID); err != nil {
session, err := s.storage.GetOfflineSessions(identity.UserID, authReq.ConnectorID)
if err != nil {
if err != storage.ErrNotFound {
s.logger.Errorf("failed to get offline session: %v", err)
return "", err
@ -536,17 +537,19 @@ func (s *Server) finalizeLogin(identity connector.Identity, authReq storage.Auth
s.logger.Errorf("failed to create offline session: %v", err)
return "", err
}
} else {
// Update existing OfflineSession obj with new RefreshTokenRef.
if err := s.storage.UpdateOfflineSessions(session.UserID, session.ConnID, func(old storage.OfflineSessions) (storage.OfflineSessions, error) {
if len(identity.ConnectorData) > 0 {
old.ConnectorData = identity.ConnectorData
}
return old, nil
}); err != nil {
s.logger.Errorf("failed to update offline session: %v", err)
return "", err
return returnURL, nil
}
// Update existing OfflineSession obj with new RefreshTokenRef.
if err := s.storage.UpdateOfflineSessions(session.UserID, session.ConnID, func(old storage.OfflineSessions) (storage.OfflineSessions, error) {
if len(identity.ConnectorData) > 0 {
old.ConnectorData = identity.ConnectorData
}
return old, nil
}); err != nil {
s.logger.Errorf("failed to update offline session: %v", err)
return "", err
}
return returnURL, nil
@ -1017,15 +1020,18 @@ func (s *Server) handleRefreshToken(w http.ResponseWriter, r *http.Request, clie
}
var connectorData []byte
if session, err := s.storage.GetOfflineSessions(refresh.Claims.UserID, refresh.ConnectorID); err != nil {
session, err := s.storage.GetOfflineSessions(refresh.Claims.UserID, refresh.ConnectorID)
switch {
case err != nil:
if err != storage.ErrNotFound {
s.logger.Errorf("failed to get offline session: %v", err)
return
}
} else if len(refresh.ConnectorData) > 0 {
case len(refresh.ConnectorData) > 0:
// Use the old connector data if it exists, should be deleted once used
connectorData = refresh.ConnectorData
} else {
default:
connectorData = session.ConnectorData
}

2
server/server.go
View file

@ -305,7 +305,7 @@ func newServer(ctx context.Context, c Config, rotationStrategy rotationStrategy)
}
r.Handle(path.Join(issuerURL.Path, p), instrumentHandlerCounter(p, handler))
}
r.NotFoundHandler = http.HandlerFunc(http.NotFound)
r.NotFoundHandler = http.NotFoundHandler()
discoveryHandler, err := s.discoveryHandler()
if err != nil {

28
server/server_test.go
View file

@ -177,7 +177,7 @@ func TestDiscovery(t *testing.T) {
defer cancel()
httpServer, _ := newTestServer(ctx, t, func(c *Config) {
c.Issuer = c.Issuer + "/non-root-path"
c.Issuer += "/non-root-path"
})
defer httpServer.Close()
@ -504,7 +504,7 @@ func TestOAuth2CodeFlow(t *testing.T) {
// Setup a dex server.
httpServer, s := newTestServer(ctx, t, func(c *Config) {
c.Issuer = c.Issuer + "/non-root-path"
c.Issuer += "/non-root-path"
c.Now = now
c.IDTokensValidFor = idTokensValidFor
})
@ -766,7 +766,7 @@ func TestCrossClientScopes(t *testing.T) {
defer cancel()
httpServer, s := newTestServer(ctx, t, func(c *Config) {
c.Issuer = c.Issuer + "/non-root-path"
c.Issuer += "/non-root-path"
})
defer httpServer.Close()
@ -889,7 +889,7 @@ func TestCrossClientScopesWithAzpInAudienceByDefault(t *testing.T) {
defer cancel()
httpServer, s := newTestServer(ctx, t, func(c *Config) {
c.Issuer = c.Issuer + "/non-root-path"
c.Issuer += "/non-root-path"
})
defer httpServer.Close()
@ -1180,7 +1180,7 @@ type oauth2Client struct {
// that only valid refresh tokens can be used to refresh an expired token.
func TestRefreshTokenFlow(t *testing.T) {
state := "state"
now := func() time.Time { return time.Now() }
now := time.Now
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
@ -1300,7 +1300,7 @@ func TestOAuth2DeviceFlow(t *testing.T) {
// Setup a dex server.
httpServer, s := newTestServer(ctx, t, func(c *Config) {
c.Issuer = c.Issuer + "/non-root-path"
c.Issuer += "/non-root-path"
c.Now = now
c.IDTokensValidFor = idTokensValidFor
})
@ -1314,7 +1314,7 @@ func TestOAuth2DeviceFlow(t *testing.T) {
t.Fatalf("failed to get provider: %v", err)
}
//Add the Clients to the test server
// Add the Clients to the test server
client := storage.Client{
ID: clientID,
RedirectURIs: []string{deviceCallbackURI},
@ -1324,13 +1324,13 @@ func TestOAuth2DeviceFlow(t *testing.T) {
t.Fatalf("failed to create client: %v", err)
}
//Grab the issuer that we'll reuse for the different endpoints to hit
// Grab the issuer that we'll reuse for the different endpoints to hit
issuer, err := url.Parse(s.issuerURL.String())
if err != nil {
t.Errorf("Could not parse issuer URL %v", err)
}
//Send a new Device Request
// Send a new Device Request
codeURL, _ := url.Parse(issuer.String())
codeURL.Path = path.Join(codeURL.Path, "device/code")
@ -1350,13 +1350,13 @@ func TestOAuth2DeviceFlow(t *testing.T) {
t.Errorf("%v - Unexpected Response Type. Expected 200 got %v. Response: %v", tc.name, resp.StatusCode, string(responseBody))
}
//Parse the code response
// Parse the code response
var deviceCode deviceCodeResponse
if err := json.Unmarshal(responseBody, &deviceCode); err != nil {
t.Errorf("Unexpected Device Code Response Format %v", string(responseBody))
}
//Mock the user hitting the verification URI and posting the form
// Mock the user hitting the verification URI and posting the form
verifyURL, _ := url.Parse(issuer.String())
verifyURL.Path = path.Join(verifyURL.Path, "/device/auth/verify_code")
urlData := url.Values{}
@ -1374,7 +1374,7 @@ func TestOAuth2DeviceFlow(t *testing.T) {
t.Errorf("%v - Unexpected Response Type. Expected 200 got %v. Response: %v", tc.name, resp.StatusCode, string(responseBody))
}
//Hit the Token Endpoint, and try and get an access token
// Hit the Token Endpoint, and try and get an access token
tokenURL, _ := url.Parse(issuer.String())
tokenURL.Path = path.Join(tokenURL.Path, "/device/token")
v := url.Values{}
@ -1393,7 +1393,7 @@ func TestOAuth2DeviceFlow(t *testing.T) {
t.Errorf("%v - Unexpected Token Response Type. Expected 200 got %v. Response: %v", tc.name, resp.StatusCode, string(responseBody))
}
//Parse the response
// Parse the response
var tokenRes accessTokenReponse
if err := json.Unmarshal(responseBody, &tokenRes); err != nil {
t.Errorf("Unexpected Device Access Token Response Format %v", string(responseBody))
@ -1411,7 +1411,7 @@ func TestOAuth2DeviceFlow(t *testing.T) {
token.Expiry = time.Now().Add(time.Duration(secs) * time.Second)
}
//Run token tests to validate info is correct
// Run token tests to validate info is correct
// Create the OAuth2 config.
oauth2Config := &oauth2.Config{
ClientID: client.ID,

10
server/templates.go
View file

@ -178,11 +178,11 @@ func loadTemplates(c webConfig, templatesDir string) (*templates, error) {
// 3. For each part of reqPath remaining(minus one), go up one level (..)
// 4. For each part of assetPath remaining, append it to result
//
//eg
//server listens at localhost/dex so serverPath is dex
//reqPath is /dex/auth
//assetPath is static/main.css
//relativeURL("/dex", "/dex/auth", "static/main.css") = "../static/main.css"
// eg
// server listens at localhost/dex so serverPath is dex
// reqPath is /dex/auth
// assetPath is static/main.css
// relativeURL("/dex", "/dex/auth", "static/main.css") = "../static/main.css"
func relativeURL(serverPath, reqPath, assetPath string) string {
if u, err := url.ParseRequestURI(assetPath); err == nil && u.Scheme != "" {
// assetPath points to the external URL, no changes needed

36
storage/conformance/conformance.go
View file

@ -763,10 +763,8 @@ func testGC(t *testing.T, s storage.Storage) {
result, err := s.GarbageCollect(expiry.Add(-time.Hour).In(tz))
if err != nil {
t.Errorf("garbage collection failed: %v", err)
} else {
if result.AuthCodes != 0 || result.AuthRequests != 0 {
t.Errorf("expected no garbage collection results, got %#v", result)
}
} else if result.AuthCodes != 0 || result.AuthRequests != 0 {
t.Errorf("expected no garbage collection results, got %#v", result)
}
if _, err := s.GetAuthCode(c.ID); err != nil {
t.Errorf("expected to be able to get auth code after GC: %v", err)
@ -815,10 +813,8 @@ func testGC(t *testing.T, s storage.Storage) {
result, err := s.GarbageCollect(expiry.Add(-time.Hour).In(tz))
if err != nil {
t.Errorf("garbage collection failed: %v", err)
} else {
if result.AuthCodes != 0 || result.AuthRequests != 0 {
t.Errorf("expected no garbage collection results, got %#v", result)
}
} else if result.AuthCodes != 0 || result.AuthRequests != 0 {
t.Errorf("expected no garbage collection results, got %#v", result)
}
if _, err := s.GetAuthRequest(a.ID); err != nil {
t.Errorf("expected to be able to get auth request after GC: %v", err)
@ -859,10 +855,8 @@ func testGC(t *testing.T, s storage.Storage) {
result, err := s.GarbageCollect(expiry.Add(-time.Hour).In(tz))
if err != nil {
t.Errorf("garbage collection failed: %v", err)
} else {
if result.DeviceRequests != 0 {
t.Errorf("expected no device garbage collection results, got %#v", result)
}
} else if result.DeviceRequests != 0 {
t.Errorf("expected no device garbage collection results, got %#v", result)
}
if _, err := s.GetDeviceRequest(d.UserCode); err != nil {
t.Errorf("expected to be able to get auth request after GC: %v", err)
@ -897,10 +891,8 @@ func testGC(t *testing.T, s storage.Storage) {
result, err := s.GarbageCollect(expiry.Add(-time.Hour).In(tz))
if err != nil {
t.Errorf("garbage collection failed: %v", err)
} else {
if result.DeviceTokens != 0 {
t.Errorf("expected no device token garbage collection results, got %#v", result)
}
} else if result.DeviceTokens != 0 {
t.Errorf("expected no device token garbage collection results, got %#v", result)
}
if _, err := s.GetDeviceToken(dt.DeviceCode); err != nil {
t.Errorf("expected to be able to get device token after GC: %v", err)
@ -987,12 +979,12 @@ func testDeviceRequestCRUD(t *testing.T, s storage.Storage) {
err = s.CreateDeviceRequest(d1)
mustBeErrAlreadyExists(t, "device request", err)
//No manual deletes for device requests, will be handled by garbage collection routines
//see testGC
// No manual deletes for device requests, will be handled by garbage collection routines
// see testGC
}
func testDeviceTokenCRUD(t *testing.T, s storage.Storage) {
//Create a Token
// Create a Token
d1 := storage.DeviceToken{
DeviceCode: storage.NewID(),
Status: "pending",
@ -1010,7 +1002,7 @@ func testDeviceTokenCRUD(t *testing.T, s storage.Storage) {
err := s.CreateDeviceToken(d1)
mustBeErrAlreadyExists(t, "device token", err)
//Update the device token, simulate a redemption
// Update the device token, simulate a redemption
if err := s.UpdateDeviceToken(d1.DeviceCode, func(old storage.DeviceToken) (storage.DeviceToken, error) {
old.Token = "token data"
old.Status = "complete"
@ -1019,13 +1011,13 @@ func testDeviceTokenCRUD(t *testing.T, s storage.Storage) {
t.Fatalf("failed to update device token: %v", err)
}
//Retrieve the device token
// Retrieve the device token
got, err := s.GetDeviceToken(d1.DeviceCode)
if err != nil {
t.Fatalf("failed to get device token: %v", err)
}
//Validate expected result set
// Validate expected result set
if got.Status != "complete" {
t.Fatalf("update failed, wanted token status=%v got %v", "complete", got.Status)
}

2
storage/kubernetes/k8sapi/client.go
View file

@ -24,7 +24,7 @@ type Config struct {
// Legacy field from pkg/api/types.go TypeMeta.
// TODO(jlowdermilk): remove this after eliminating downstream dependencies.
Kind string `json:"kind,omitempty"`
// DEPRECATED: APIVersion is the preferred api version for communicating with the kubernetes cluster (v1, v2, etc).
// Deprecated: APIVersion is the preferred api version for communicating with the kubernetes cluster (v1, v2, etc).
// Because a cluster can run multiple API groups and potentially multiple versions of each, it no longer makes sense to specify
// a single value for the cluster version.
// This field isn't really needed anyway, so we are deprecating it without replacement.

9
storage/sql/config.go
View file

@ -289,16 +289,19 @@ func (s *MySQL) open(logger log.Logger) (*conn, error) {
cfg.Addr = s.Host
}
}
if s.SSL.CAFile != "" || s.SSL.CertFile != "" || s.SSL.KeyFile != "" {
switch {
case s.SSL.CAFile != "" || s.SSL.CertFile != "" || s.SSL.KeyFile != "":
if err := s.makeTLSConfig(); err != nil {
return nil, fmt.Errorf("failed to make TLS config: %v", err)
}
cfg.TLSConfig = mysqlSSLCustom
} else if s.SSL.Mode == "" {
case s.SSL.Mode == "":
cfg.TLSConfig = mysqlSSLTrue
} else {
default:
cfg.TLSConfig = s.SSL.Mode
}
for k, v := range s.params {
cfg.Params[k] = v
}

2
storage/static.go
View file

@ -96,7 +96,7 @@ type staticPasswordsStorage struct {
func WithStaticPasswords(s Storage, staticPasswords []Password, logger log.Logger) Storage {
passwordsByEmail := make(map[string]Password, len(staticPasswords))
for _, p := range staticPasswords {
//Enable case insensitive email comparison.
// Enable case insensitive email comparison.
lowerEmail := strings.ToLower(p.Email)
if _, ok := passwordsByEmail[lowerEmail]; ok {
logger.Errorf("Attempting to create StaticPasswords with the same email id: %s", p.Email)

2
storage/storage.go
View file

@ -25,7 +25,7 @@ var (
// TODO(ericchiang): refactor ID creation onto the storage.
var encoding = base32.NewEncoding("abcdefghijklmnopqrstuvwxyz234567")
//Valid characters for user codes
// Valid characters for user codes
const validUserCharacters = "BCDFGHJKLMNPQRSTVWXZ"
// NewDeviceCode returns a 32 char alphanumeric cryptographically secure string