103 lines
2.4 KiB
Go
103 lines
2.4 KiB
Go
|
package auth
|
||
|
|
|
||
|
|
import (
|
||
|
|
"context"
|
||
|
|
"fmt"
|
||
|
|
"net/http"
|
||
|
|
"net/url"
|
||
|
|
"strings"
|
||
|
|
|
||
|
|
goauth "github.com/abbot/go-http-auth"
|
||
|
|
"github.com/containous/traefik/config"
|
||
|
|
"github.com/containous/traefik/middlewares"
|
||
|
|
"github.com/containous/traefik/middlewares/accesslog"
|
||
|
|
"github.com/containous/traefik/tracing"
|
||
|
|
"github.com/opentracing/opentracing-go/ext"
|
||
|
|
)
|
||
|
|
|
||
|
|
const (
|
||
|
|
basicTypeName = "BasicAuth"
|
||
|
|
)
|
||
|
|
|
||
|
|
type basicAuth struct {
|
||
|
|
next http.Handler
|
||
|
|
auth *goauth.BasicAuth
|
||
|
|
users map[string]string
|
||
|
|
headerField string
|
||
|
|
removeHeader bool
|
||
|
|
name string
|
||
|
|
}
|
||
|
|
|
||
|
|
// NewBasic creates a basicAuth middleware.
|
||
|
|
func NewBasic(ctx context.Context, next http.Handler, authConfig config.BasicAuth, name string) (http.Handler, error) {
|
||
|
|
middlewares.GetLogger(ctx, name, basicTypeName).Debug("Creating middleware")
|
||
|
|
users, err := getUsers(authConfig.UsersFile, authConfig.Users, basicUserParser)
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
|
||
|
|
ba := &basicAuth{
|
||
|
|
next: next,
|
||
|
|
users: users,
|
||
|
|
headerField: authConfig.HeaderField,
|
||
|
|
removeHeader: authConfig.RemoveHeader,
|
||
|
|
name: name,
|
||
|
|
}
|
||
|
|
|
||
|
|
realm := defaultRealm
|
||
|
|
if len(authConfig.Realm) > 0 {
|
||
|
|
realm = authConfig.Realm
|
||
|
|
}
|
||
|
|
ba.auth = goauth.NewBasicAuthenticator(realm, ba.secretBasic)
|
||
|
|
|
||
|
|
return ba, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (b *basicAuth) GetTracingInformation() (string, ext.SpanKindEnum) {
|
||
|
|
return b.name, tracing.SpanKindNoneEnum
|
||
|
|
}
|
||
|
|
|
||
|
|
func (b *basicAuth) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
|
||
|
|
logger := middlewares.GetLogger(req.Context(), b.name, basicTypeName)
|
||
|
|
|
||
|
|
if username := b.auth.CheckAuth(req); username == "" {
|
||
|
|
logger.Debug("Authentication failed")
|
||
|
|
tracing.SetErrorWithEvent(req, "Authentication failed")
|
||
|
|
b.auth.RequireAuth(rw, req)
|
||
|
|
} else {
|
||
|
|
logger.Debug("Authentication succeeded")
|
||
|
|
req.URL.User = url.User(username)
|
||
|
|
|
||
|
|
logData := accesslog.GetLogData(req)
|
||
|
|
if logData != nil {
|
||
|
|
logData.Core[accesslog.ClientUsername] = username
|
||
|
|
}
|
||
|
|
|
||
|
|
if b.headerField != "" {
|
||
|
|
req.Header[b.headerField] = []string{username}
|
||
|
|
}
|
||
|
|
|
||
|
|
if b.removeHeader {
|
||
|
|
logger.Debug("Removing authorization header")
|
||
|
|
req.Header.Del(authorizationHeader)
|
||
|
|
}
|
||
|
|
b.next.ServeHTTP(rw, req)
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
func (b *basicAuth) secretBasic(user, realm string) string {
|
||
|
|
if secret, ok := b.users[user]; ok {
|
||
|
|
return secret
|
||
|
|
}
|
||
|
|
|
||
|
|
return ""
|
||
|
|
}
|
||
|
|
|
||
|
|
func basicUserParser(user string) (string, string, error) {
|
||
|
|
split := strings.Split(user, ":")
|
||
|
|
if len(split) != 2 {
|
||
|
|
return "", "", fmt.Errorf("error parsing BasicUser: %v", user)
|
||
|
|
}
|
||
|
|
return split[0], split[1], nil
|
||
|
|
}
|