mirror of
https://github.com/pomerium/pomerium.git
synced 2025-08-06 10:21:05 +02:00
8463020e68
Add an additional method to the ssh.Evaluator interface for invalidating cached databroker records. Invalidating the global cache is not sufficient, because there may be sync queriers as well. Make sure to invalidate the User record (in addition to the Session record) during the login flow.
476 lines
17 KiB
Go
476 lines
17 KiB
Go
package ssh
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import (
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"context"
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"errors"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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"google.golang.org/grpc"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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"google.golang.org/protobuf/types/known/timestamppb"
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extensions_ssh "github.com/pomerium/envoy-custom/api/extensions/filters/network/ssh"
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"github.com/pomerium/pomerium/authorize/evaluator"
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"github.com/pomerium/pomerium/config"
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"github.com/pomerium/pomerium/internal/atomicutil"
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"github.com/pomerium/pomerium/internal/testutil/mockidp"
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"github.com/pomerium/pomerium/pkg/grpc/databroker"
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"github.com/pomerium/pomerium/pkg/grpc/session"
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"github.com/pomerium/pomerium/pkg/identity"
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"github.com/pomerium/pomerium/pkg/policy/criteria"
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"github.com/pomerium/pomerium/pkg/protoutil"
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)
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func TestHandlePublicKeyMethodRequest(t *testing.T) {
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t.Run("no public key fingerprint", func(t *testing.T) {
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var a Auth
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var req extensions_ssh.PublicKeyMethodRequest
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_, err := a.handlePublicKeyMethodRequest(t.Context(), StreamAuthInfo{}, &req)
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assert.ErrorContains(t, err, "invalid public key fingerprint")
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})
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t.Run("evaluate error", func(t *testing.T) {
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info := StreamAuthInfo{
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Username: ptr("username"),
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Hostname: ptr("hostname"),
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}
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var req extensions_ssh.PublicKeyMethodRequest
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req.PublicKeyFingerprintSha256 = []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZ123456")
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pe := func(context.Context, *Request) (*evaluator.Result, error) {
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return nil, errors.New("error evaluating policy")
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}
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a := NewAuth(fakePolicyEvaluator{evaluateSSH: pe}, nil, nil)
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_, err := a.handlePublicKeyMethodRequest(t.Context(), info, &req)
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assert.ErrorContains(t, err, "error evaluating policy")
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})
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t.Run("allow", func(t *testing.T) {
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info := StreamAuthInfo{
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Username: ptr("username"),
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Hostname: ptr("hostname"),
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}
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var req extensions_ssh.PublicKeyMethodRequest
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req.PublicKeyFingerprintSha256 = []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZ123456")
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fakePublicKey := []byte("fake-public-key")
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req.PublicKey = fakePublicKey
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pe := func(_ context.Context, r *Request) (*evaluator.Result, error) {
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assert.Equal(t, r, &Request{
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Username: "username",
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Hostname: "hostname",
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PublicKey: fakePublicKey,
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SessionID: "sshkey-SHA256:QUJDREVGR0hJSktMTU5PUFFSU1RVVldYWVoxMjM0NTY=",
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})
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return &evaluator.Result{
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Allow: evaluator.NewRuleResult(true),
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Deny: evaluator.NewRuleResult(false),
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}, nil
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}
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a := NewAuth(fakePolicyEvaluator{evaluateSSH: pe}, nil, nil)
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res, err := a.HandlePublicKeyMethodRequest(t.Context(), info, &req)
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assert.NoError(t, err)
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assert.Empty(t, res.RequireAdditionalMethods)
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require.NotNil(t, res.Allow)
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assert.Equal(t, res.Allow.PublicKey, fakePublicKey)
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})
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t.Run("deny", func(t *testing.T) {
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info := StreamAuthInfo{
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Username: ptr("username"),
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Hostname: ptr("hostname"),
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}
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var req extensions_ssh.PublicKeyMethodRequest
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req.PublicKeyFingerprintSha256 = []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZ123456")
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pe := func(_ context.Context, _ *Request) (*evaluator.Result, error) {
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return &evaluator.Result{
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Allow: evaluator.NewRuleResult(true),
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Deny: evaluator.NewRuleResult(true),
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}, nil
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}
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a := NewAuth(fakePolicyEvaluator{evaluateSSH: pe}, nil, nil)
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res, err := a.HandlePublicKeyMethodRequest(t.Context(), info, &req)
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assert.NoError(t, err)
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assert.Nil(t, res.Allow)
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assert.Empty(t, res.RequireAdditionalMethods)
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})
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t.Run("public key unauthorized", func(t *testing.T) {
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info := StreamAuthInfo{
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Username: ptr("username"),
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Hostname: ptr("hostname"),
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}
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var req extensions_ssh.PublicKeyMethodRequest
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req.PublicKeyFingerprintSha256 = []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZ123456")
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pe := func(_ context.Context, _ *Request) (*evaluator.Result, error) {
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return &evaluator.Result{
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Allow: evaluator.NewRuleResult(false, criteria.ReasonSSHPublickeyUnauthorized),
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Deny: evaluator.NewRuleResult(false),
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}, nil
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}
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a := NewAuth(fakePolicyEvaluator{evaluateSSH: pe}, nil, nil)
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res, err := a.HandlePublicKeyMethodRequest(t.Context(), info, &req)
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assert.NoError(t, err)
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assert.Nil(t, res.Allow)
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assert.Equal(t, res.RequireAdditionalMethods, []string{MethodPublicKey})
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})
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t.Run("needs login", func(t *testing.T) {
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info := StreamAuthInfo{
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Username: ptr("username"),
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Hostname: ptr("hostname"),
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}
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var req extensions_ssh.PublicKeyMethodRequest
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req.PublicKeyFingerprintSha256 = []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZ123456")
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pe := func(_ context.Context, _ *Request) (*evaluator.Result, error) {
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return &evaluator.Result{
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Allow: evaluator.NewRuleResult(false),
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Deny: evaluator.NewRuleResult(false, criteria.ReasonUserUnauthenticated),
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}, nil
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}
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a := NewAuth(fakePolicyEvaluator{evaluateSSH: pe}, nil, nil)
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res, err := a.HandlePublicKeyMethodRequest(t.Context(), info, &req)
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assert.NoError(t, err)
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assert.NotNil(t, res.Allow)
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assert.Equal(t, res.RequireAdditionalMethods, []string{MethodKeyboardInteractive})
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})
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t.Run("internal command no session", func(t *testing.T) {
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client := fakeDataBrokerServiceClient{
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get: func(
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_ context.Context, _ *databroker.GetRequest, _ ...grpc.CallOption,
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) (*databroker.GetResponse, error) {
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return nil, status.Error(codes.NotFound, "not found")
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},
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}
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info := StreamAuthInfo{
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Username: ptr("username"),
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Hostname: ptr(""),
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}
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var req extensions_ssh.PublicKeyMethodRequest
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req.PublicKeyFingerprintSha256 = []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZ123456")
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pe := func(_ context.Context, _ *Request) (*evaluator.Result, error) {
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return &evaluator.Result{
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Allow: evaluator.NewRuleResult(false),
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Deny: evaluator.NewRuleResult(false, criteria.ReasonUserUnauthenticated),
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}, nil
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}
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a := NewAuth(fakePolicyEvaluator{pe, client}, nil, nil)
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res, err := a.HandlePublicKeyMethodRequest(t.Context(), info, &req)
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assert.NoError(t, err)
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assert.NotNil(t, res.Allow)
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assert.Equal(t, res.RequireAdditionalMethods, []string{MethodKeyboardInteractive})
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})
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t.Run("internal command with session", func(t *testing.T) {
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client := fakeDataBrokerServiceClient{
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get: func(
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_ context.Context, _ *databroker.GetRequest, _ ...grpc.CallOption,
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) (*databroker.GetResponse, error) {
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return &databroker.GetResponse{
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Record: &databroker.Record{
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Type: "type.googleapis.com/session.Session",
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Id: "abc",
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Data: protoutil.NewAny(&session.Session{
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Id: "abc",
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UserId: "USER-ID",
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}),
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},
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}, nil
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},
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}
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info := StreamAuthInfo{
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Username: ptr("username"),
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Hostname: ptr(""),
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}
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var req extensions_ssh.PublicKeyMethodRequest
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req.PublicKeyFingerprintSha256 = []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZ123456")
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pe := func(_ context.Context, _ *Request) (*evaluator.Result, error) {
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return &evaluator.Result{
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Allow: evaluator.NewRuleResult(true),
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Deny: evaluator.NewRuleResult(false),
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}, nil
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}
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a := NewAuth(fakePolicyEvaluator{pe, client}, nil, nil)
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res, err := a.HandlePublicKeyMethodRequest(t.Context(), info, &req)
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assert.NoError(t, err)
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assert.NotNil(t, res.Allow)
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assert.Empty(t, res.RequireAdditionalMethods)
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})
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t.Run("internal command databroker error", func(t *testing.T) {
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client := fakeDataBrokerServiceClient{
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get: func(
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_ context.Context, _ *databroker.GetRequest, _ ...grpc.CallOption,
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) (*databroker.GetResponse, error) {
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return nil, status.Error(codes.Unknown, "unknown")
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},
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}
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info := StreamAuthInfo{
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Username: ptr("username"),
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Hostname: ptr(""),
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}
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var req extensions_ssh.PublicKeyMethodRequest
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req.PublicKeyFingerprintSha256 = []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZ123456")
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pe := func(_ context.Context, _ *Request) (*evaluator.Result, error) {
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return &evaluator.Result{
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Allow: evaluator.NewRuleResult(true),
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Deny: evaluator.NewRuleResult(false),
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}, nil
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}
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a := NewAuth(fakePolicyEvaluator{pe, client}, nil, nil)
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_, err := a.HandlePublicKeyMethodRequest(t.Context(), info, &req)
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assert.ErrorContains(t, err, "internal error")
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})
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}
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func TestHandleKeyboardInteractiveMethodRequest(t *testing.T) {
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t.Run("no public key", func(t *testing.T) {
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var a Auth
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_, err := a.handleKeyboardInteractiveMethodRequest(t.Context(), StreamAuthInfo{}, nil)
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assert.ErrorContains(t, err, "expected PublicKeyAllow message not to be nil")
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})
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t.Run("ok", func(t *testing.T) {
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pe := func(_ context.Context, _ *Request) (*evaluator.Result, error) {
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return &evaluator.Result{
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Allow: evaluator.NewRuleResult(true),
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Deny: evaluator.NewRuleResult(false),
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}, nil
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}
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var putRecords []*databroker.Record
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client := fakeDataBrokerServiceClient{
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get: func(
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_ context.Context, _ *databroker.GetRequest, _ ...grpc.CallOption,
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) (*databroker.GetResponse, error) {
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return nil, status.Error(codes.NotFound, "not found")
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},
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put: func(
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_ context.Context, in *databroker.PutRequest, _ ...grpc.CallOption,
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) (*databroker.PutResponse, error) {
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putRecords = append(putRecords, in.Records...)
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return &databroker.PutResponse{
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Records: in.Records,
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}, nil
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},
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}
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cfg := config.Config{
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Options: config.NewDefaultOptions(),
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}
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mockIDP := mockidp.New(mockidp.Config{EnableDeviceAuth: true})
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idpURL := mockIDP.Start(t)
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cfg.Options.Provider = "oidc"
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cfg.Options.ProviderURL = idpURL
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cfg.Options.ClientID = "client-id"
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cfg.Options.ClientSecret = "client-secret"
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a := NewAuth(fakePolicyEvaluator{pe, client}, atomicutil.NewValue(&cfg), nil)
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info := StreamAuthInfo{
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Username: ptr("username"),
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Hostname: ptr("hostname"),
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PublicKeyAllow: AuthMethodValue[extensions_ssh.PublicKeyAllowResponse]{
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Value: &extensions_ssh.PublicKeyAllowResponse{
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PublicKey: []byte("fake-public-key"),
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},
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},
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PublicKeyFingerprintSha256: []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZ123456"),
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}
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res, err := a.HandleKeyboardInteractiveMethodRequest(t.Context(), info, nil, noopQuerier{})
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require.NoError(t, err)
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assert.NotNil(t, res.Allow)
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assert.Empty(t, res.RequireAdditionalMethods)
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// A new Session and User record should have been saved to the databroker.
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assert.Len(t, putRecords, 2)
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assert.Equal(t, "type.googleapis.com/user.User", putRecords[0].Type)
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assert.Equal(t, "fake.user@example.com", putRecords[0].Id)
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assert.Equal(t, "type.googleapis.com/session.Session", putRecords[1].Type)
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assert.Equal(t, "sshkey-SHA256:QUJDREVGR0hJSktMTU5PUFFSU1RVVldYWVoxMjM0NTY=", putRecords[1].Id)
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})
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t.Run("denied", func(t *testing.T) {
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pe := func(_ context.Context, _ *Request) (*evaluator.Result, error) {
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return &evaluator.Result{
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Allow: evaluator.NewRuleResult(false),
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Deny: evaluator.NewRuleResult(false),
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}, nil
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}
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client := fakeDataBrokerServiceClient{
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get: func(
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_ context.Context, _ *databroker.GetRequest, _ ...grpc.CallOption,
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) (*databroker.GetResponse, error) {
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return nil, status.Error(codes.NotFound, "not found")
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},
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put: func(
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_ context.Context, in *databroker.PutRequest, _ ...grpc.CallOption,
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) (*databroker.PutResponse, error) {
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return &databroker.PutResponse{
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Records: in.Records,
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}, nil
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},
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}
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cfg := config.Config{
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Options: config.NewDefaultOptions(),
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}
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mockIDP := mockidp.New(mockidp.Config{EnableDeviceAuth: true})
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idpURL := mockIDP.Start(t)
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cfg.Options.Provider = "oidc"
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cfg.Options.ProviderURL = idpURL
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cfg.Options.ClientID = "client-id"
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cfg.Options.ClientSecret = "client-secret"
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a := NewAuth(fakePolicyEvaluator{pe, client}, atomicutil.NewValue(&cfg), nil)
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info := StreamAuthInfo{
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Username: ptr("username"),
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Hostname: ptr("hostname"),
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PublicKeyAllow: AuthMethodValue[extensions_ssh.PublicKeyAllowResponse]{
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Value: &extensions_ssh.PublicKeyAllowResponse{
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PublicKey: []byte("fake-public-key"),
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},
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},
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PublicKeyFingerprintSha256: []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZ123456"),
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}
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res, err := a.HandleKeyboardInteractiveMethodRequest(t.Context(), info, nil, noopQuerier{})
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require.NoError(t, err)
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assert.Nil(t, res.Allow)
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assert.Empty(t, res.RequireAdditionalMethods)
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})
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t.Run("invalid fingerprint", func(t *testing.T) {
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cfg := config.Config{
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Options: config.NewDefaultOptions(),
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}
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mockIDP := mockidp.New(mockidp.Config{EnableDeviceAuth: true})
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idpURL := mockIDP.Start(t)
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cfg.Options.Provider = "oidc"
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cfg.Options.ProviderURL = idpURL
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cfg.Options.ClientID = "client-id"
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cfg.Options.ClientSecret = "client-secret"
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a := NewAuth(nil, atomicutil.NewValue(&cfg), nil)
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info := StreamAuthInfo{
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Username: ptr("username"),
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Hostname: ptr("hostname"),
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PublicKeyAllow: AuthMethodValue[extensions_ssh.PublicKeyAllowResponse]{
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Value: &extensions_ssh.PublicKeyAllowResponse{
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PublicKey: []byte("fake-public-key"),
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},
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},
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}
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_, err := a.handleKeyboardInteractiveMethodRequest(t.Context(), info, noopQuerier{})
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assert.ErrorContains(t, err, "invalid public key fingerprint")
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})
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}
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func TestFormatSession(t *testing.T) {
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t.Run("invalid fingerprint", func(t *testing.T) {
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var a Auth
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info := StreamAuthInfo{
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PublicKeyFingerprintSha256: []byte("wrong-length"),
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}
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_, err := a.FormatSession(t.Context(), info)
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assert.ErrorContains(t, err, "invalid public key fingerprint")
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})
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t.Run("ok", func(t *testing.T) {
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client := fakeDataBrokerServiceClient{
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get: func(
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_ context.Context, in *databroker.GetRequest, _ ...grpc.CallOption,
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) (*databroker.GetResponse, error) {
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const expectedID = "sshkey-SHA256:QUJDREVGR0hJSktMTU5PUFFSU1RVVldYWVoxMjM0NTY="
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assert.Equal(t, in.Type, "type.googleapis.com/session.Session")
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assert.Equal(t, in.Id, expectedID)
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claims := identity.FlattenedClaims{
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"foo": []any{"bar", "baz"},
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"quux": []any{42},
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}
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return &databroker.GetResponse{
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Record: &databroker.Record{
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Type: "type.googleapis.com/session.Session",
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Id: expectedID,
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Data: protoutil.NewAny(&session.Session{
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Id: expectedID,
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UserId: "USER-ID",
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ExpiresAt: ×tamppb.Timestamp{Seconds: 1750965358},
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Claims: claims.ToPB(),
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}),
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},
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}, nil
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},
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}
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a := NewAuth(fakePolicyEvaluator{client: client}, nil, nil)
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info := StreamAuthInfo{
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PublicKeyFingerprintSha256: []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZ123456"),
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}
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b, err := a.FormatSession(t.Context(), info)
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assert.NoError(t, err)
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assert.Equal(t, string(b), `
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User ID: USER-ID
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Session ID: sshkey-SHA256:QUJDREVGR0hJSktMTU5PUFFSU1RVVldYWVoxMjM0NTY=
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Expires at: 2025-06-26 19:15:58 +0000 UTC
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Claims:
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foo: [bar baz]
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quux: [42]
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`)
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})
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}
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func TestDeleteSession(t *testing.T) {
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t.Run("invalid fingerprint", func(t *testing.T) {
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var a Auth
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info := StreamAuthInfo{
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PublicKeyFingerprintSha256: []byte("wrong-length"),
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}
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err := a.DeleteSession(t.Context(), info)
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assert.ErrorContains(t, err, "invalid public key fingerprint")
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})
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t.Run("ok", func(t *testing.T) {
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putError := errors.New("sentinel")
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client := fakeDataBrokerServiceClient{
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put: func(
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_ context.Context, in *databroker.PutRequest, _ ...grpc.CallOption,
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) (*databroker.PutResponse, error) {
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require.Len(t, in.Records, 1)
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assert.Equal(t, in.Records[0].Id, "sshkey-SHA256:QUJDREVGR0hJSktMTU5PUFFSU1RVVldYWVoxMjM0NTY=")
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assert.NotNil(t, in.Records[0].DeletedAt)
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return nil, putError
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},
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}
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a := NewAuth(fakePolicyEvaluator{client: client}, nil, nil)
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info := StreamAuthInfo{
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PublicKeyFingerprintSha256: []byte("ABCDEFGHIJKLMNOPQRSTUVWXYZ123456"),
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}
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err := a.DeleteSession(t.Context(), info)
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assert.Equal(t, putError, err)
|
|
})
|
|
}
|
|
|
|
type fakePolicyEvaluator struct {
|
|
evaluateSSH func(context.Context, *Request) (*evaluator.Result, error)
|
|
client databroker.DataBrokerServiceClient
|
|
}
|
|
|
|
func (f fakePolicyEvaluator) EvaluateSSH(ctx context.Context, req *Request) (*evaluator.Result, error) {
|
|
return f.evaluateSSH(ctx, req)
|
|
}
|
|
|
|
func (f fakePolicyEvaluator) GetDataBrokerServiceClient() databroker.DataBrokerServiceClient {
|
|
return f.client
|
|
}
|
|
|
|
func (f fakePolicyEvaluator) InvalidateCacheForRecords(_ context.Context, _ ...*databroker.Record) {}
|
|
|
|
type fakeDataBrokerServiceClient struct {
|
|
databroker.DataBrokerServiceClient
|
|
|
|
get func(ctx context.Context, in *databroker.GetRequest, opts ...grpc.CallOption) (*databroker.GetResponse, error)
|
|
put func(ctx context.Context, in *databroker.PutRequest, opts ...grpc.CallOption) (*databroker.PutResponse, error)
|
|
}
|
|
|
|
func (f fakeDataBrokerServiceClient) Get(ctx context.Context, in *databroker.GetRequest, opts ...grpc.CallOption) (*databroker.GetResponse, error) {
|
|
return f.get(ctx, in, opts...)
|
|
}
|
|
|
|
func (f fakeDataBrokerServiceClient) Put(ctx context.Context, in *databroker.PutRequest, opts ...grpc.CallOption) (*databroker.PutResponse, error) {
|
|
return f.put(ctx, in, opts...)
|
|
}
|
|
|
|
type noopQuerier struct{}
|
|
|
|
func (noopQuerier) Prompt(
|
|
_ context.Context, _ *extensions_ssh.KeyboardInteractiveInfoPrompts,
|
|
) (*extensions_ssh.KeyboardInteractiveInfoPromptResponses, error) {
|
|
return nil, nil
|
|
}
|
|
|
|
func ptr[T any](t T) *T {
|
|
return &t
|
|
}
|