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88 lines
2.0 KiB
88 lines
2.0 KiB
package internet
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import (
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"errors"
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"github.com/v2ray/v2ray-core/common/alloc"
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"github.com/v2ray/v2ray-core/common/loader"
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)
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type Authenticator interface {
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Seal(*alloc.Buffer)
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Open(*alloc.Buffer) bool
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Overhead() int
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}
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type AuthenticatorFactory interface {
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Create(AuthenticatorConfig) Authenticator
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}
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type AuthenticatorConfig interface {
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}
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var (
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ErrDuplicatedAuthenticator = errors.New("Authenticator already registered.")
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ErrAuthenticatorNotFound = errors.New("Authenticator not found.")
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authenticatorCache = make(map[string]AuthenticatorFactory)
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configCache loader.ConfigLoader
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)
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func RegisterAuthenticator(name string, factory AuthenticatorFactory, configCreator loader.ConfigCreator) error {
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if _, found := authenticatorCache[name]; found {
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return ErrDuplicatedAuthenticator
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}
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authenticatorCache[name] = factory
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return configCache.RegisterCreator(name, configCreator)
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}
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func CreateAuthenticator(name string, config AuthenticatorConfig) (Authenticator, error) {
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factory, found := authenticatorCache[name]
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if !found {
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return nil, ErrAuthenticatorNotFound
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}
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return factory.Create(config), nil
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}
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func CreateAuthenticatorConfig(rawConfig []byte) (string, AuthenticatorConfig, error) {
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config, name, err := configCache.Load(rawConfig)
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if err != nil {
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return name, nil, err
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}
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return name, config, nil
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}
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type AuthenticatorChain struct {
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authenticators []Authenticator
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}
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func NewAuthenticatorChain(auths ...Authenticator) Authenticator {
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return &AuthenticatorChain{
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authenticators: auths,
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}
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}
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func (this *AuthenticatorChain) Overhead() int {
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total := 0
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for _, auth := range this.authenticators {
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total += auth.Overhead()
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}
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return total
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}
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func (this *AuthenticatorChain) Open(payload *alloc.Buffer) bool {
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for _, auth := range this.authenticators {
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if !auth.Open(payload) {
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return false
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}
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}
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return true
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}
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func (this *AuthenticatorChain) Seal(payload *alloc.Buffer) {
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for i := len(this.authenticators) - 1; i >= 0; i-- {
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auth := this.authenticators[i]
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auth.Seal(payload)
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}
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}
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