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package auth
import (
"time"
"github.com/grpc-ecosystem/go-grpc-middleware/auth"
"github.com/prometheus/client_golang/prometheus"
"golang.org/x/net/context"
"google.golang.org/grpc"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/status"
"gitlab.com/gitlab-org/gitaly/auth"
"gitlab.com/gitlab-org/gitaly/internal/config"
)
var (
authCount = prometheus.NewCounterVec(
prometheus.CounterOpts{
Name: "gitaly_authentications",
Help: "Counts of of Gitaly request authentication attempts",
},
[]string{"enforced", "status"},
)
)
func init() {
prometheus.MustRegister(authCount)
}
// StreamServerInterceptor checks for Gitaly bearer tokens.
func StreamServerInterceptor() grpc.StreamServerInterceptor {
return grpc_auth.StreamServerInterceptor(check)
}
// UnaryServerInterceptor checks for Gitaly bearer tokens.
func UnaryServerInterceptor() grpc.UnaryServerInterceptor {
return grpc_auth.UnaryServerInterceptor(check)
}
func check(ctx context.Context) (context.Context, error) {
if len(config.Config.Auth.Token) == 0 {
countStatus("server disabled authentication").Inc()
return ctx, nil
}
err := gitalyauth.CheckToken(ctx, config.Config.Auth.Token, time.Now())
switch status.Code(err) {
case codes.OK:
countStatus(okLabel()).Inc()
case codes.Unauthenticated:
countStatus("unauthenticated").Inc()
case codes.PermissionDenied:
countStatus("denied").Inc()
default:
countStatus("invalid").Inc()
}
return ctx, ifEnforced(err)
}
func ifEnforced(err error) error {
if config.Config.Auth.Transitioning {
return nil
}
return err
}
func okLabel() string {
if config.Config.Auth.Transitioning {
// This special value is an extra warning sign to administrators that
// authentication is currently not enforced.
return "would be ok"
}
return "ok"
}
func countStatus(status string) prometheus.Counter {
enforced := "true"
if config.Config.Auth.Transitioning {
enforced = "false"
}
return authCount.WithLabelValues(enforced, status)
}
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