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https://github.com/signaller-matrix/signaller.git
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Add simple username validation
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4793970e87
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@ -16,6 +16,7 @@ type Backend interface {
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GetRoomByID(id string) Room
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Sync(token string, request sync.SyncRequest) (response *sync.SyncReply, err models.ApiError)
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PublicRooms() []Room
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ValidateUsernameFunc() func(string) error
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}
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type Room interface {
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@ -1,6 +1,8 @@
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package memory
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import (
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"fmt"
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"regexp"
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"sort"
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"sync"
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@ -12,10 +14,11 @@ import (
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)
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type Backend struct {
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data map[string]internal.User
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rooms map[string]internal.Room
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hostname string
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mutex sync.Mutex // TODO: replace with RW mutex
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data map[string]internal.User
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rooms map[string]internal.Room
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hostname string
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validateUsernameFunc func(string) error // TODO: create ability to redefine validation func
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mutex sync.Mutex // TODO: replace with RW mutex
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}
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type Token struct {
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@ -24,14 +27,22 @@ type Token struct {
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func NewBackend(hostname string) *Backend {
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return &Backend{
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hostname: hostname,
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rooms: make(map[string]internal.Room),
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data: make(map[string]internal.User)}
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hostname: hostname,
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validateUsernameFunc: defaultValidationUsernameFunc,
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rooms: make(map[string]internal.Room),
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data: make(map[string]internal.User)}
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}
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func (backend *Backend) Register(username, password, device string) (user internal.User, token string, err models.ApiError) {
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backend.mutex.Lock()
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if backend.validateUsernameFunc != nil {
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err := backend.validateUsernameFunc(username)
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if err != nil {
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return nil, "", models.NewError(models.M_INVALID_USERNAME, err.Error())
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}
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}
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if _, ok := backend.data[username]; ok {
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backend.mutex.Unlock()
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return nil, "", models.NewError(models.M_USER_IN_USE, "trying to register a user ID which has been taken")
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@ -131,3 +142,20 @@ func (backend *Backend) PublicRooms() []internal.Room {
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return rooms
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}
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func (backend *Backend) ValidateUsernameFunc() func(string) error {
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backend.mutex.Lock()
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defer backend.mutex.Unlock()
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return backend.validateUsernameFunc
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}
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func defaultValidationUsernameFunc(userName string) error {
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const re = `\w{5,}`
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if !regexp.MustCompile(re).MatchString(userName) {
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return fmt.Errorf("username does not match %s", re)
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}
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return nil
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}
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