Files
seaweedFS/weed/s3api/s3api_sts_get_federation_token_test.go
Chris Lu 059bee683f feat(s3): add STS GetFederationToken support (#8891)
* feat(s3): add STS GetFederationToken support

Implement the AWS STS GetFederationToken API, which allows long-term IAM
users to obtain temporary credentials scoped down by an optional inline
session policy. This is useful for server-side applications that mint
per-user temporary credentials.

Key behaviors:
- Requires SigV4 authentication from a long-term IAM user
- Rejects calls from temporary credentials (session tokens)
- Name parameter (2-64 chars) identifies the federated user
- DurationSeconds supports 900-129600 (15 min to 36 hours, default 12h)
- Optional inline session policy for permission scoping
- Caller's attached policies are embedded in the JWT token
- Returns federated user ARN: arn:aws:sts::<account>:federated-user/<Name>

No performance impact on the S3 hot path — credential vending is a
separate control-plane operation, and all policy data is embedded in
the stateless JWT token.

* fix(s3): address GetFederationToken PR review feedback

- Fix Name validation: max 32 chars (not 64) per AWS spec, add regex
  validation for [\w+=,.@-]+ character whitelist
- Refactor parseDurationSeconds into parseDurationSecondsWithBounds to
  eliminate duplicated duration parsing logic
- Add sts:GetFederationToken permission check via VerifyActionPermission
  mirroring the AssumeRole authorization pattern
- Change GetPoliciesForUser to return ([]string, error) so callers fail
  closed on policy-resolution failures instead of silently returning nil
- Move temporary-credentials rejection before SigV4 verification for
  early rejection and proper test coverage
- Update tests: verify specific error message for temp cred rejection,
  add regex validation test cases (spaces, slashes rejected)

* refactor(s3): use sts.Action* constants instead of hard-coded strings

Replace hard-coded "sts:AssumeRole" and "sts:GetFederationToken" strings
in VerifyActionPermission calls with sts.ActionAssumeRole and
sts.ActionGetFederationToken package constants.

* fix(s3): pass through sts: prefix in action resolver and merge policies

Two fixes:

1. mapBaseActionToS3Format now passes through "sts:" prefix alongside
   "s3:" and "iam:", preventing sts:GetFederationToken from being
   rewritten to s3:sts:GetFederationToken in VerifyActionPermission.
   This also fixes the existing sts:AssumeRole permission checks.

2. GetFederationToken policy embedding now merges identity.PolicyNames
   (from SigV4 identity) with policies from the IAM manager (which may
   include group-attached policies), deduplicated via a map. Previously
   the IAM manager lookup was skipped when identity.PolicyNames was
   non-empty, causing group policies to be omitted from the token.

* test(s3): add integration tests for sts: action passthrough and policy merge

Action resolver tests:
- TestMapBaseActionToS3Format_ServicePrefixPassthrough: verifies s3:, iam:,
  and sts: prefixed actions pass through unchanged while coarse actions
  (Read, Write) are mapped to S3 format
- TestResolveS3Action_STSActionsPassthrough: verifies sts:AssumeRole,
  sts:GetFederationToken, sts:GetCallerIdentity pass through ResolveS3Action
  unchanged with both nil and real HTTP requests

Policy merge tests:
- TestGetFederationToken_GetPoliciesForUser: tests IAMManager.GetPoliciesForUser
  with no user store (error), missing user, user with policies, user without
- TestGetFederationToken_PolicyMergeAndDedup: tests that identity.PolicyNames
  and IAM-manager-resolved policies are merged and deduplicated (SharedPolicy
  appears in both sources, result has 3 unique policies)
- TestGetFederationToken_PolicyMergeNoManager: tests that when IAM manager is
  unavailable, identity.PolicyNames alone are embedded

* test(s3): add end-to-end integration tests for GetFederationToken

Add integration tests that call GetFederationToken using real AWS SigV4
signed HTTP requests against a running SeaweedFS instance, following the
existing pattern in test/s3/iam/s3_sts_assume_role_test.go.

Tests:
- TestSTSGetFederationTokenValidation: missing name, name too short/long,
  invalid characters, duration too short/long, malformed policy, anonymous
  rejection (7 subtests)
- TestSTSGetFederationTokenRejectTemporaryCredentials: obtains temp creds
  via AssumeRole then verifies GetFederationToken rejects them
- TestSTSGetFederationTokenSuccess: basic success, custom 1h duration,
  36h max duration with expiration time verification
- TestSTSGetFederationTokenWithSessionPolicy: creates a bucket, obtains
  federated creds with GetObject-only session policy, verifies GetObject
  succeeds and PutObject is denied using the AWS SDK S3 client
2026-04-02 17:37:05 -07:00

747 lines
24 KiB
Go

package s3api
import (
"context"
"encoding/xml"
"fmt"
"net/http"
"net/http/httptest"
"net/url"
"sort"
"strings"
"testing"
"time"
"github.com/seaweedfs/seaweedfs/weed/iam/integration"
"github.com/seaweedfs/seaweedfs/weed/iam/policy"
"github.com/seaweedfs/seaweedfs/weed/iam/sts"
"github.com/seaweedfs/seaweedfs/weed/pb/iam_pb"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
// mockUserStore implements integration.UserStore for testing GetPoliciesForUser
type mockUserStore struct {
users map[string]*iam_pb.Identity
}
func (m *mockUserStore) GetUser(_ context.Context, username string) (*iam_pb.Identity, error) {
u, ok := m.users[username]
if !ok {
return nil, nil
}
return u, nil
}
// TestGetFederationToken_BasicFlow tests basic credential generation for GetFederationToken
func TestGetFederationToken_BasicFlow(t *testing.T) {
stsService, _ := setupTestSTSService(t)
iam := &IdentityAccessManagement{
iamIntegration: &MockIAMIntegration{},
}
stsHandlers := NewSTSHandlers(stsService, iam)
// Simulate the core logic of handleGetFederationToken
name := "BobApp"
callerIdentity := &Identity{
Name: "alice",
PrincipalArn: fmt.Sprintf("arn:aws:iam::%s:user/alice", defaultAccountID),
PolicyNames: []string{"S3ReadPolicy"},
}
accountID := stsHandlers.getAccountID()
// Generate session ID and credentials
sessionId, err := sts.GenerateSessionId()
require.NoError(t, err)
expiration := time.Now().Add(12 * time.Hour)
federatedUserArn := fmt.Sprintf("arn:aws:sts::%s:federated-user/%s", accountID, name)
federatedUserId := fmt.Sprintf("%s:%s", accountID, name)
claims := sts.NewSTSSessionClaims(sessionId, stsService.Config.Issuer, expiration).
WithSessionName(name).
WithRoleInfo(callerIdentity.PrincipalArn, federatedUserId, federatedUserArn).
WithPolicies(callerIdentity.PolicyNames)
sessionToken, err := stsService.GetTokenGenerator().GenerateJWTWithClaims(claims)
require.NoError(t, err)
// Validate the session token
sessionInfo, err := stsService.ValidateSessionToken(context.Background(), sessionToken)
require.NoError(t, err)
require.NotNil(t, sessionInfo)
// Verify the session info contains caller's policies
assert.Equal(t, []string{"S3ReadPolicy"}, sessionInfo.Policies)
// Verify principal is the federated user ARN
assert.Equal(t, federatedUserArn, sessionInfo.Principal)
// Verify the RoleArn points to the caller's identity (for policy resolution)
assert.Equal(t, callerIdentity.PrincipalArn, sessionInfo.RoleArn)
// Verify session name
assert.Equal(t, name, sessionInfo.SessionName)
}
// TestGetFederationToken_WithSessionPolicy tests session policy scoping
func TestGetFederationToken_WithSessionPolicy(t *testing.T) {
stsService, _ := setupTestSTSService(t)
stsHandlers := NewSTSHandlers(stsService, &IdentityAccessManagement{
iamIntegration: &MockIAMIntegration{},
})
accountID := stsHandlers.getAccountID()
name := "ScopedApp"
sessionPolicyJSON := `{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Action":["s3:GetObject"],"Resource":["arn:aws:s3:::my-bucket/*"]}]}`
normalizedPolicy, err := sts.NormalizeSessionPolicy(sessionPolicyJSON)
require.NoError(t, err)
sessionId, err := sts.GenerateSessionId()
require.NoError(t, err)
expiration := time.Now().Add(12 * time.Hour)
federatedUserArn := fmt.Sprintf("arn:aws:sts::%s:federated-user/%s", accountID, name)
federatedUserId := fmt.Sprintf("%s:%s", accountID, name)
claims := sts.NewSTSSessionClaims(sessionId, stsService.Config.Issuer, expiration).
WithSessionName(name).
WithRoleInfo("arn:aws:iam::000000000000:user/caller", federatedUserId, federatedUserArn).
WithPolicies([]string{"S3FullAccess"}).
WithSessionPolicy(normalizedPolicy)
sessionToken, err := stsService.GetTokenGenerator().GenerateJWTWithClaims(claims)
require.NoError(t, err)
sessionInfo, err := stsService.ValidateSessionToken(context.Background(), sessionToken)
require.NoError(t, err)
require.NotNil(t, sessionInfo)
// Verify session policy is embedded
assert.NotEmpty(t, sessionInfo.SessionPolicy)
assert.Contains(t, sessionInfo.SessionPolicy, "s3:GetObject")
// Verify caller's policies are still present
assert.Equal(t, []string{"S3FullAccess"}, sessionInfo.Policies)
}
// TestGetFederationToken_RejectTemporaryCredentials tests that requests with
// session tokens are rejected.
func TestGetFederationToken_RejectTemporaryCredentials(t *testing.T) {
stsService, _ := setupTestSTSService(t)
stsHandlers := NewSTSHandlers(stsService, &IdentityAccessManagement{
iamIntegration: &MockIAMIntegration{},
})
tests := []struct {
name string
setToken func(r *http.Request)
description string
}{
{
name: "SessionTokenInHeader",
setToken: func(r *http.Request) {
r.Header.Set("X-Amz-Security-Token", "some-session-token")
},
description: "Session token in X-Amz-Security-Token header should be rejected",
},
{
name: "SessionTokenInQuery",
setToken: func(r *http.Request) {
q := r.URL.Query()
q.Set("X-Amz-Security-Token", "some-session-token")
r.URL.RawQuery = q.Encode()
},
description: "Session token in query string should be rejected",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
form := url.Values{}
form.Set("Action", "GetFederationToken")
form.Set("Name", "TestUser")
form.Set("Version", "2011-06-15")
req := httptest.NewRequest("POST", "/", strings.NewReader(form.Encode()))
req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
tt.setToken(req)
// Parse form so the handler can read it
require.NoError(t, req.ParseForm())
// Re-set values after parse
req.Form.Set("Action", "GetFederationToken")
req.Form.Set("Name", "TestUser")
req.Form.Set("Version", "2011-06-15")
rr := httptest.NewRecorder()
stsHandlers.HandleSTSRequest(rr, req)
// The handler rejects temporary credentials before SigV4 verification
assert.Equal(t, http.StatusForbidden, rr.Code, tt.description)
assert.Contains(t, rr.Body.String(), "AccessDenied")
assert.Contains(t, rr.Body.String(), "cannot be called with temporary credentials")
})
}
}
// TestGetFederationToken_MissingName tests that a missing Name parameter returns an error
func TestGetFederationToken_MissingName(t *testing.T) {
stsService, _ := setupTestSTSService(t)
stsHandlers := NewSTSHandlers(stsService, &IdentityAccessManagement{
iamIntegration: &MockIAMIntegration{},
})
req := httptest.NewRequest("POST", "/", nil)
req.Form = url.Values{}
req.Form.Set("Action", "GetFederationToken")
req.Form.Set("Version", "2011-06-15")
// Name is intentionally omitted
rr := httptest.NewRecorder()
stsHandlers.HandleSTSRequest(rr, req)
assert.Equal(t, http.StatusBadRequest, rr.Code)
assert.Contains(t, rr.Body.String(), "Name is required")
}
// TestGetFederationToken_NameValidation tests Name parameter validation
func TestGetFederationToken_NameValidation(t *testing.T) {
stsService, _ := setupTestSTSService(t)
stsHandlers := NewSTSHandlers(stsService, &IdentityAccessManagement{
iamIntegration: &MockIAMIntegration{},
})
tests := []struct {
name string
federName string
expectError bool
errContains string
}{
{
name: "TooShort",
federName: "A",
expectError: true,
errContains: "between 2 and 32",
},
{
name: "TooLong",
federName: strings.Repeat("A", 33),
expectError: true,
errContains: "between 2 and 32",
},
{
name: "MinLength",
federName: "AB",
expectError: false,
},
{
name: "MaxLength",
federName: strings.Repeat("A", 32),
expectError: false,
},
{
name: "ValidSpecialChars",
federName: "user+=,.@-test",
expectError: false,
},
{
name: "InvalidChars_Space",
federName: "bad name",
expectError: true,
errContains: "invalid characters",
},
{
name: "InvalidChars_Slash",
federName: "bad/name",
expectError: true,
errContains: "invalid characters",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
req := httptest.NewRequest("POST", "/", nil)
req.Form = url.Values{}
req.Form.Set("Action", "GetFederationToken")
req.Form.Set("Name", tt.federName)
req.Form.Set("Version", "2011-06-15")
rr := httptest.NewRecorder()
stsHandlers.HandleSTSRequest(rr, req)
if tt.expectError {
assert.Equal(t, http.StatusBadRequest, rr.Code)
assert.Contains(t, rr.Body.String(), tt.errContains)
} else {
// Valid name should proceed past validation — will fail at SigV4
// (returns 403 because we have no real signature)
assert.NotEqual(t, http.StatusBadRequest, rr.Code,
"Valid name should not produce a 400 for name validation")
}
})
}
}
// TestGetFederationToken_DurationValidation tests DurationSeconds validation
func TestGetFederationToken_DurationValidation(t *testing.T) {
stsService, _ := setupTestSTSService(t)
stsHandlers := NewSTSHandlers(stsService, &IdentityAccessManagement{
iamIntegration: &MockIAMIntegration{},
})
tests := []struct {
name string
duration string
expectError bool
errContains string
}{
{
name: "BelowMinimum",
duration: "899",
expectError: true,
errContains: "between",
},
{
name: "AboveMaximum",
duration: "129601",
expectError: true,
errContains: "between",
},
{
name: "InvalidFormat",
duration: "not-a-number",
expectError: true,
errContains: "invalid DurationSeconds",
},
{
name: "MinimumValid",
duration: "900",
expectError: false,
},
{
name: "MaximumValid_36Hours",
duration: "129600",
expectError: false,
},
{
name: "Default12Hours",
duration: "43200",
expectError: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
req := httptest.NewRequest("POST", "/", nil)
req.Form = url.Values{}
req.Form.Set("Action", "GetFederationToken")
req.Form.Set("Name", "TestUser")
req.Form.Set("DurationSeconds", tt.duration)
req.Form.Set("Version", "2011-06-15")
rr := httptest.NewRecorder()
stsHandlers.HandleSTSRequest(rr, req)
if tt.expectError {
assert.Equal(t, http.StatusBadRequest, rr.Code)
assert.Contains(t, rr.Body.String(), tt.errContains)
} else {
// Valid duration should proceed past validation — will fail at SigV4
assert.NotEqual(t, http.StatusBadRequest, rr.Code,
"Valid duration should not produce a 400 for duration validation")
}
})
}
}
// TestGetFederationToken_ResponseFormat tests the XML response structure
func TestGetFederationToken_ResponseFormat(t *testing.T) {
// Verify the response XML structure matches AWS format
response := GetFederationTokenResponse{
Result: GetFederationTokenResult{
Credentials: STSCredentials{
AccessKeyId: "ASIA1234567890",
SecretAccessKey: "secret123",
SessionToken: "token123",
Expiration: "2026-04-02T12:00:00Z",
},
FederatedUser: FederatedUser{
FederatedUserId: "000000000000:BobApp",
Arn: "arn:aws:sts::000000000000:federated-user/BobApp",
},
},
}
response.ResponseMetadata.RequestId = "test-request-id"
data, err := xml.MarshalIndent(response, "", " ")
require.NoError(t, err)
xmlStr := string(data)
assert.Contains(t, xmlStr, "GetFederationTokenResponse")
assert.Contains(t, xmlStr, "GetFederationTokenResult")
assert.Contains(t, xmlStr, "FederatedUser")
assert.Contains(t, xmlStr, "FederatedUserId")
assert.Contains(t, xmlStr, "federated-user/BobApp")
assert.Contains(t, xmlStr, "ASIA1234567890")
assert.Contains(t, xmlStr, "test-request-id")
// Verify it can be unmarshaled back
var parsed GetFederationTokenResponse
err = xml.Unmarshal(data, &parsed)
require.NoError(t, err)
assert.Equal(t, "ASIA1234567890", parsed.Result.Credentials.AccessKeyId)
assert.Equal(t, "arn:aws:sts::000000000000:federated-user/BobApp", parsed.Result.FederatedUser.Arn)
assert.Equal(t, "000000000000:BobApp", parsed.Result.FederatedUser.FederatedUserId)
}
// TestGetFederationToken_PolicyEmbedding tests that the caller's policies are embedded
// into the session token using the IAM integration manager
func TestGetFederationToken_PolicyEmbedding(t *testing.T) {
ctx := context.Background()
manager := newTestSTSIntegrationManager(t)
// Create a policy that the user has attached
userPolicy := &policy.PolicyDocument{
Version: "2012-10-17",
Statement: []policy.Statement{
{
Effect: "Allow",
Action: []string{"s3:GetObject", "s3:PutObject"},
Resource: []string{"arn:aws:s3:::user-bucket/*"},
},
},
}
require.NoError(t, manager.CreatePolicy(ctx, "", "UserS3Policy", userPolicy))
stsService := manager.GetSTSService()
// Simulate what handleGetFederationToken does for policy embedding
name := "AppClient"
callerPolicies := []string{"UserS3Policy"}
sessionId, err := sts.GenerateSessionId()
require.NoError(t, err)
expiration := time.Now().Add(12 * time.Hour)
accountID := defaultAccountID
federatedUserArn := fmt.Sprintf("arn:aws:sts::%s:federated-user/%s", accountID, name)
federatedUserId := fmt.Sprintf("%s:%s", accountID, name)
claims := sts.NewSTSSessionClaims(sessionId, stsService.Config.Issuer, expiration).
WithSessionName(name).
WithRoleInfo("arn:aws:iam::000000000000:user/caller", federatedUserId, federatedUserArn).
WithPolicies(callerPolicies)
sessionToken, err := stsService.GetTokenGenerator().GenerateJWTWithClaims(claims)
require.NoError(t, err)
sessionInfo, err := stsService.ValidateSessionToken(ctx, sessionToken)
require.NoError(t, err)
require.NotNil(t, sessionInfo)
// Verify the caller's policy names are embedded
assert.Equal(t, []string{"UserS3Policy"}, sessionInfo.Policies)
}
// TestGetFederationToken_PolicyIntersection tests that both the caller's base policies
// and the restrictive session policy are embedded in the token, enabling the
// authorization layer to compute their intersection at request time.
func TestGetFederationToken_PolicyIntersection(t *testing.T) {
ctx := context.Background()
manager := newTestSTSIntegrationManager(t)
// Create a broad policy for the caller
broadPolicy := &policy.PolicyDocument{
Version: "2012-10-17",
Statement: []policy.Statement{
{
Effect: "Allow",
Action: []string{"s3:*"},
Resource: []string{"arn:aws:s3:::*", "arn:aws:s3:::*/*"},
},
},
}
require.NoError(t, manager.CreatePolicy(ctx, "", "S3FullAccess", broadPolicy))
stsService := manager.GetSTSService()
// Session policy restricts to one bucket and one action
sessionPolicyJSON := `{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Action":["s3:GetObject"],"Resource":["arn:aws:s3:::restricted-bucket/*"]}]}`
normalizedPolicy, err := sts.NormalizeSessionPolicy(sessionPolicyJSON)
require.NoError(t, err)
sessionId, err := sts.GenerateSessionId()
require.NoError(t, err)
expiration := time.Now().Add(12 * time.Hour)
name := "RestrictedApp"
accountID := defaultAccountID
federatedUserArn := fmt.Sprintf("arn:aws:sts::%s:federated-user/%s", accountID, name)
federatedUserId := fmt.Sprintf("%s:%s", accountID, name)
claims := sts.NewSTSSessionClaims(sessionId, stsService.Config.Issuer, expiration).
WithSessionName(name).
WithRoleInfo("arn:aws:iam::000000000000:user/caller", federatedUserId, federatedUserArn).
WithPolicies([]string{"S3FullAccess"}).
WithSessionPolicy(normalizedPolicy)
sessionToken, err := stsService.GetTokenGenerator().GenerateJWTWithClaims(claims)
require.NoError(t, err)
sessionInfo, err := stsService.ValidateSessionToken(ctx, sessionToken)
require.NoError(t, err)
require.NotNil(t, sessionInfo)
// Verify both the broad base policies and the restrictive session policy are embedded
// The authorization layer computes intersection at request time
assert.Equal(t, []string{"S3FullAccess"}, sessionInfo.Policies,
"Caller's base policies should be embedded in token")
assert.Contains(t, sessionInfo.SessionPolicy, "restricted-bucket",
"Session policy should restrict to specific bucket")
assert.Contains(t, sessionInfo.SessionPolicy, "s3:GetObject",
"Session policy should restrict to specific action")
}
// TestGetFederationToken_MalformedPolicy tests that invalid policy JSON is rejected
// by the session policy normalization used in the handler
func TestGetFederationToken_MalformedPolicy(t *testing.T) {
tests := []struct {
name string
policyStr string
expectErr bool
}{
{
name: "InvalidJSON",
policyStr: "not-valid-json",
expectErr: true,
},
{
name: "EmptyObject",
policyStr: "{}",
expectErr: true,
},
{
name: "TooLarge",
policyStr: `{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Action":["s3:GetObject"],"Resource":["` + strings.Repeat("a", 2048) + `"]}]}`,
expectErr: true,
},
{
name: "ValidPolicy",
policyStr: `{"Version":"2012-10-17","Statement":[{"Effect":"Allow","Action":["s3:GetObject"],"Resource":["arn:aws:s3:::bucket/*"]}]}`,
expectErr: false,
},
{
name: "EmptyString",
policyStr: "",
expectErr: false,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
_, err := sts.NormalizeSessionPolicy(tt.policyStr)
if tt.expectErr {
assert.Error(t, err)
} else {
assert.NoError(t, err)
}
})
}
}
// TestGetFederationToken_STSNotReady tests that the handler returns 503 when STS is not initialized
func TestGetFederationToken_STSNotReady(t *testing.T) {
// Create handlers with nil STS service
stsHandlers := NewSTSHandlers(nil, &IdentityAccessManagement{
iamIntegration: &MockIAMIntegration{},
})
req := httptest.NewRequest("POST", "/", nil)
req.Form = url.Values{}
req.Form.Set("Action", "GetFederationToken")
req.Form.Set("Name", "TestUser")
req.Form.Set("Version", "2011-06-15")
rr := httptest.NewRecorder()
stsHandlers.HandleSTSRequest(rr, req)
assert.Equal(t, http.StatusServiceUnavailable, rr.Code)
assert.Contains(t, rr.Body.String(), "ServiceUnavailable")
}
// TestGetFederationToken_DefaultDuration tests that the default duration is 12 hours
func TestGetFederationToken_DefaultDuration(t *testing.T) {
assert.Equal(t, int64(43200), defaultFederationDurationSeconds, "Default duration should be 12 hours (43200 seconds)")
assert.Equal(t, int64(129600), maxFederationDurationSeconds, "Max duration should be 36 hours (129600 seconds)")
}
// TestGetFederationToken_GetPoliciesForUser tests that GetPoliciesForUser
// correctly resolves user policies from the UserStore and returns errors
// when the store is unavailable.
func TestGetFederationToken_GetPoliciesForUser(t *testing.T) {
ctx := context.Background()
manager := newTestSTSIntegrationManager(t)
t.Run("NoUserStore", func(t *testing.T) {
// UserStore not set — should return error
policies, err := manager.GetPoliciesForUser(ctx, "alice")
assert.Error(t, err)
assert.Nil(t, policies)
assert.Contains(t, err.Error(), "user store not configured")
})
t.Run("UserNotFound", func(t *testing.T) {
manager.SetUserStore(&mockUserStore{users: map[string]*iam_pb.Identity{}})
policies, err := manager.GetPoliciesForUser(ctx, "nonexistent")
assert.NoError(t, err)
assert.Nil(t, policies)
})
t.Run("UserWithPolicies", func(t *testing.T) {
manager.SetUserStore(&mockUserStore{
users: map[string]*iam_pb.Identity{
"alice": {
Name: "alice",
PolicyNames: []string{"GroupReadPolicy", "GroupWritePolicy"},
},
},
})
policies, err := manager.GetPoliciesForUser(ctx, "alice")
assert.NoError(t, err)
assert.Equal(t, []string{"GroupReadPolicy", "GroupWritePolicy"}, policies)
})
t.Run("UserWithNoPolicies", func(t *testing.T) {
manager.SetUserStore(&mockUserStore{
users: map[string]*iam_pb.Identity{
"bob": {Name: "bob"},
},
})
policies, err := manager.GetPoliciesForUser(ctx, "bob")
assert.NoError(t, err)
assert.Empty(t, policies)
})
}
// TestGetFederationToken_PolicyMergeAndDedup tests that the handler's policy
// merge logic correctly combines identity.PolicyNames with IAM-manager-resolved
// policies and deduplicates the result.
func TestGetFederationToken_PolicyMergeAndDedup(t *testing.T) {
ctx := context.Background()
manager := newTestSTSIntegrationManager(t)
// Create policies so they exist in the engine
for _, name := range []string{"DirectPolicy", "GroupPolicy", "SharedPolicy"} {
require.NoError(t, manager.CreatePolicy(ctx, "", name, &policy.PolicyDocument{
Version: "2012-10-17",
Statement: []policy.Statement{
{Effect: "Allow", Action: []string{"s3:GetObject"}, Resource: []string{"arn:aws:s3:::*/*"}},
},
}))
}
// Set up a user store that returns group-attached policies
manager.SetUserStore(&mockUserStore{
users: map[string]*iam_pb.Identity{
"alice": {
Name: "alice",
PolicyNames: []string{"GroupPolicy", "SharedPolicy"},
},
},
})
stsService := manager.GetSTSService()
// Simulate what the handler does: merge identity.PolicyNames with GetPoliciesForUser
identityPolicies := []string{"DirectPolicy", "SharedPolicy"} // SharedPolicy overlaps
policySet := make(map[string]struct{})
for _, p := range identityPolicies {
policySet[p] = struct{}{}
}
userPolicies, err := manager.GetPoliciesForUser(ctx, "alice")
require.NoError(t, err)
for _, p := range userPolicies {
policySet[p] = struct{}{}
}
merged := make([]string, 0, len(policySet))
for p := range policySet {
merged = append(merged, p)
}
sort.Strings(merged) // deterministic for assertion
// Should contain all three unique policies, no duplicates
assert.Equal(t, []string{"DirectPolicy", "GroupPolicy", "SharedPolicy"}, merged)
// Verify the merged policies can be embedded in a token and recovered
sessionId, err := sts.GenerateSessionId()
require.NoError(t, err)
expiration := time.Now().Add(time.Hour)
claims := sts.NewSTSSessionClaims(sessionId, stsService.Config.Issuer, expiration).
WithSessionName("test").
WithRoleInfo("arn:aws:iam::000000000000:user/alice", "000000000000:test", "arn:aws:sts::000000000000:federated-user/test").
WithPolicies(merged)
token, err := stsService.GetTokenGenerator().GenerateJWTWithClaims(claims)
require.NoError(t, err)
sessionInfo, err := stsService.ValidateSessionToken(ctx, token)
require.NoError(t, err)
sort.Strings(sessionInfo.Policies)
assert.Equal(t, []string{"DirectPolicy", "GroupPolicy", "SharedPolicy"}, sessionInfo.Policies,
"Token should contain the deduplicated merge of identity and group policies")
}
// TestGetFederationToken_PolicyMergeNoManager tests that when the IAM manager
// is unavailable, identity.PolicyNames alone are still embedded.
func TestGetFederationToken_PolicyMergeNoManager(t *testing.T) {
ctx := context.Background()
stsService, _ := setupTestSTSService(t)
// No IAM manager — only identity.PolicyNames should be used
identityPolicies := []string{"UserDirectPolicy"}
policySet := make(map[string]struct{})
for _, p := range identityPolicies {
policySet[p] = struct{}{}
}
// IAM manager is nil — skip GetPoliciesForUser (mirrors handler logic)
var policyManager *integration.IAMManager // nil
if policyManager != nil {
t.Fatal("policyManager should be nil in this test")
}
merged := make([]string, 0, len(policySet))
for p := range policySet {
merged = append(merged, p)
}
sessionId, err := sts.GenerateSessionId()
require.NoError(t, err)
expiration := time.Now().Add(time.Hour)
claims := sts.NewSTSSessionClaims(sessionId, stsService.Config.Issuer, expiration).
WithSessionName("test").
WithRoleInfo("arn:aws:iam::000000000000:user/alice", "000000000000:test", "arn:aws:sts::000000000000:federated-user/test").
WithPolicies(merged)
token, err := stsService.GetTokenGenerator().GenerateJWTWithClaims(claims)
require.NoError(t, err)
sessionInfo, err := stsService.ValidateSessionToken(ctx, token)
require.NoError(t, err)
assert.Equal(t, []string{"UserDirectPolicy"}, sessionInfo.Policies,
"Without IAM manager, only identity policies should be embedded")
}