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main.go
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main.go
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package main
import (
"bytes"
"context"
"errors"
"flag"
"fmt"
"io/ioutil"
"regexp"
"strings"
"time"
asset "cloud.google.com/go/asset/apiv1"
"github.com/golang/glog"
"github.com/golang/protobuf/jsonpb"
//"google.golang.org/protobuf"
"golang.org/x/oauth2"
"golang.org/x/oauth2/google"
gcperrors "github.com/salrashid123/gcp_error_handler/golang/errors"
"google.golang.org/api/bigquery/v2"
crmv1 "google.golang.org/api/cloudresourcemanager/v1"
crmv2 "google.golang.org/api/cloudresourcemanager/v2"
"google.golang.org/api/compute/v1"
"google.golang.org/api/iap/v1"
"google.golang.org/api/run/v2"
"google.golang.org/api/spanner/v1"
"google.golang.org/api/storage/v1"
"google.golang.org/api/impersonate"
"google.golang.org/api/iterator"
"google.golang.org/api/option"
//"google.golang.org/api/container/v1"
"google.golang.org/api/iam/v1"
assetpb "google.golang.org/genproto/googleapis/cloud/asset/v1"
policytroubleshooter "cloud.google.com/go/policytroubleshooter/apiv1"
policypb "google.golang.org/genproto/googleapis/cloud/policytroubleshooter/v1"
storageAPI "cloud.google.com/go/storage"
)
// https://cloud.google.com/iam/docs/full-resource-names
const (
bigqueryTablesRegex = "//bigquery.googleapis.com/projects/(.+)/datasets/(.+)/tables/(.+)"
bigqueryDatasetRegex = "//bigquery.googleapis.com/projects/(.+)/datasets/(.+)"
iamServiceAccountsRegex = "//iam.googleapis.com/projects/(.+)/serviceAccounts/(.+)"
serviceAccountsKeysRegex = "//iam.googleapis.com/projects/(.+)/serviceAccounts/(.+)/keys/(.+)"
iapAppEngineRegex = "//iap.googleapis.com/projects/(.+)/iap_web/appengine-(.+)/services/(.+)"
iapGCERegex = "//iap.googleapis.com/projects/(.+)/iap_web/compute/services/(.+)"
spannerInstances = "//spanner.googleapis.com/projects/(.+)/instances/(.+)"
storageBucketsRegex = "//storage.googleapis.com/projects/_/buckets/(.+)"
computeInstanceRegex = "//compute.googleapis.com/projects/(.+)/zones/(.+)/instances/(.+)$"
computeNetworksRegex = "//compute.googleapis.com/projects/(.+)/global/networks/(.+)"
computeSubNetworksRegex = "//compute.googleapis.com/projects/(.+)/regions/(.+)/subnetworks/(.+)"
kubernetesEngineRegex = "//container.googleapis.com/projects/(.+)/clusters/(.+)"
pubsubTopicsRegex = "//pubsub.googleapis.com/projects/(.+)/topics/(.+)"
resourceManagerOrganizationRegex = "//cloudresourcemanager.googleapis.com/organizations/(.+)"
resourceManagerProjectsRegex = "//cloudresourcemanager.googleapis.com/projects/(.+)"
resourceManagerFoldersRegex = "//cloudresourcemanager.googleapis.com/folders/(.+)"
cloudRunRegex = "//run.googleapis.com/projects/(.+)/locations/(.+)/services/(.+)"
// https://cloud.google.com/asset-inventory/docs/supported-asset-types#analyzable_asset_types
assetTypeBQDataset = "bigquery.googleapis.com/Dataset"
assetTypeBQTable = "bigquery.googleapis.com/Table"
assetTypeGCS = "storage.googleapis.com/Bucket"
assetTypeAppEngineService = "appengine.googleapis.com/Service"
assetTypeBackendService = "compute.googleapis.com/BackendService"
assetTypeFolder = "cloudresourcemanager.googleapis.com/Folder"
assetTypeOrganization = "cloudresourcemanager.googleapis.com/Organization"
assetTypeProject = "cloudresourcemanager.googleapis.com/Project"
assetTypeServiceAccount = "iam.googleapis.com/ServiceAccount"
assetTypeServiceAccountKey = "iam.googleapis.com/ServiceAccountKey"
assetTypeGCEInstance = "compute.googleapis.com/Instance"
assetTypeCloudRunService = "run.googleapis.com/Service"
cloudPlatformScope = "https://www.googleapis.com/auth/cloud-platform"
)
var (
scope = flag.String("scope", "", "Scope to check")
checkResource = flag.String("checkResource", "", "Canonical Resource to check //storage.googleapis.com/projects/_/buckets/(.+)")
identity = flag.String("identity", "", "Permission to check")
impersonateServiceAccount = flag.String("impersonateServiceAccount", "", "ServiceAccount to impersonate")
printPermissionsOnResource = flag.Bool("printPermissionsOnResource", false, "PrintPermission on target Resource")
useIAMPolicyRequest = flag.Bool("useIAMPolicyRequest", false, "Use IAMPolicy API request (requires admin)")
projectID = flag.String("projectID", "", "ProjectID for quota")
usePolicyTroubleshooter = flag.Bool("usePolicyTroubleshooter", false, "Use policytroubleshooter API to check a given permission (requires admin)")
permissionToCheck = flag.String("permissionToCheck", "", "Permission to check using policytroubleshooter API (requires admin)")
enableImpersonatedCheck = flag.Bool("enableImpersonatedCheck", false, "Check for Impersonated credentials (default: false)")
checkEndUserPermissions = flag.Bool("checkEndUserPermissions", false, "Enumerate end user permissions (default: false)")
gcsDestinationForLongRunningAnalysis = flag.String("gcsDestinationForLongRunningAnalysis", "", "Destination gcs bucket to write LongRunningAnalysis (in format gcs://fabled-ray-104117-bucket)")
)
func init() {
}
func getPermissions(ctx context.Context, ts oauth2.TokenSource, resource string) ([]string, error) {
glog.V(2).Infof("================ QueryTestablePermissions with Resource ======================\n")
glog.V(2).Infof(" %s \n ", resource)
if *checkResource == "" {
return nil, errors.New("must specify checkResource")
}
iamService, err := iam.NewService(ctx, option.WithQuotaProject(*projectID))
if err != nil {
glog.Fatal(err)
}
ors := iam.NewPermissionsService(iamService)
var permstoTest []string
perms := make([]*iam.Permission, 0)
nextPageToken := ""
for {
ps, err := ors.QueryTestablePermissions(&iam.QueryTestablePermissionsRequest{
FullResourceName: resource,
PageToken: nextPageToken,
}).Do()
if err != nil {
return nil, errors.New("could not iterate testable permissions")
}
glog.V(20).Infof("================ Getting Permissions %v\n", ps.NextPageToken)
for _, sa := range ps.Permissions {
glog.V(30).Infof(" Adding Permission to check %s\n", sa.Name)
perms = append(perms, sa)
}
nextPageToken = ps.NextPageToken
if nextPageToken == "" {
break
}
}
glog.V(15).Infof("Testable permissions on resource:\n")
for _, p := range perms {
glog.V(20).Infof(" %s", p.Name)
permstoTest = append(permstoTest, p.Name)
}
return permstoTest, nil
}
func main() {
flag.Parse()
ctx := context.Background()
s := []string{cloudPlatformScope}
var err error
var ts oauth2.TokenSource
if *impersonateServiceAccount != "" {
if *checkEndUserPermissions {
glog.V(10).Infof("Impersonating User using service Account")
// just users are supported
email := strings.TrimPrefix(*identity, "user:")
ts, err = impersonate.CredentialsTokenSource(ctx, impersonate.CredentialsConfig{
TargetPrincipal: *impersonateServiceAccount,
Scopes: s,
Subject: email,
})
} else {
ts, err = impersonate.CredentialsTokenSource(ctx, impersonate.CredentialsConfig{
TargetPrincipal: *impersonateServiceAccount,
Scopes: s,
})
}
} else {
ts, err = google.DefaultTokenSource(ctx)
}
if err != nil {
glog.Errorf("Unable to create Impersonated TokenSource %v ", err)
return
}
var permstoTest []string
if *printPermissionsOnResource {
// Test Permississons
permstoTest, err := getPermissions(ctx, ts, *checkResource)
if err != nil {
glog.Fatal(err)
}
err = verifyPermissionsAsUser(ctx, ts, *checkResource, permstoTest)
if err != nil {
glog.Fatal(err)
}
return
}
// ***************************************************************************************************
if *useIAMPolicyRequest {
glog.V(2).Infof("Getting AnalyzeIamPolicyRequest")
creds, err := google.FindDefaultCredentials(ctx)
if err != nil {
glog.Fatal(err)
}
proj := creds.ProjectID
if *projectID != "" {
proj = *projectID
}
assetClient, err := asset.NewClient(ctx, option.WithQuotaProject(proj), option.WithTokenSource(ts))
if err != nil {
glog.Fatal(err)
}
if *identity == "" {
glog.Fatal("--identity flag required for AnalyzeIamPolicyRequest")
}
if !*enableImpersonatedCheck {
req := &assetpb.AnalyzeIamPolicyRequest{
AnalysisQuery: &assetpb.IamPolicyAnalysisQuery{
Scope: *scope,
ResourceSelector: &assetpb.IamPolicyAnalysisQuery_ResourceSelector{
FullResourceName: *checkResource,
},
IdentitySelector: &assetpb.IamPolicyAnalysisQuery_IdentitySelector{
Identity: *identity,
},
Options: &assetpb.IamPolicyAnalysisQuery_Options{
ExpandGroups: true,
OutputGroupEdges: true,
ExpandResources: true,
ExpandRoles: true,
OutputResourceEdges: true,
AnalyzeServiceAccountImpersonation: *enableImpersonatedCheck,
},
},
}
resp, err := assetClient.AnalyzeIamPolicy(ctx, req)
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return
}
for _, result := range resp.MainAnalysis.AnalysisResults {
for _, acl := range result.AccessControlLists {
glog.V(2).Infof(" %s has access to resource %s", *identity, acl.Resources)
glog.V(2).Infof(" with capability %s", acl.Accesses)
glog.V(2).Infof(" from node [%s]\n", result.AttachedResourceFullName)
}
if result.IamBinding.Condition != nil {
glog.V(2).Infof(" With Condition [%s]\n", result.IamBinding.Condition.Expression)
}
if stringInSlice(*identity, result.IamBinding.Members) {
glog.V(2).Info(" user is directly included in the role binding ")
} else {
glog.V(2).Info(" user is included in the role binding through a group hierarchy: ", getIdentityAncestry(result.IdentityList, *identity, []string{*identity}))
}
}
if len(resp.MainAnalysis.AnalysisResults) == 0 {
glog.V(2).Infof(" %s does not access to resource %s", *identity, *checkResource)
}
} else {
fileName := time.Now().UTC().Format("20060102150405")
req := &assetpb.AnalyzeIamPolicyLongrunningRequest{
AnalysisQuery: &assetpb.IamPolicyAnalysisQuery{
Scope: *scope,
ResourceSelector: &assetpb.IamPolicyAnalysisQuery_ResourceSelector{
FullResourceName: *checkResource,
},
IdentitySelector: &assetpb.IamPolicyAnalysisQuery_IdentitySelector{
Identity: *identity,
},
Options: &assetpb.IamPolicyAnalysisQuery_Options{
ExpandGroups: true,
OutputGroupEdges: true,
ExpandResources: true,
ExpandRoles: true,
OutputResourceEdges: true,
AnalyzeServiceAccountImpersonation: *enableImpersonatedCheck,
},
},
OutputConfig: &assetpb.IamPolicyAnalysisOutputConfig{
Destination: &assetpb.IamPolicyAnalysisOutputConfig_GcsDestination_{
GcsDestination: &assetpb.IamPolicyAnalysisOutputConfig_GcsDestination{
Uri: fmt.Sprintf("%s/%s", *gcsDestinationForLongRunningAnalysis, fileName),
},
},
},
}
op, err := assetClient.AnalyzeIamPolicyLongrunning(ctx, req)
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return
}
_, err = op.Wait(ctx)
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return
}
glog.V(2).Infof(" Result written to %s", fmt.Sprintf("%s/%s", *gcsDestinationForLongRunningAnalysis, fileName))
gcsClient, err := storageAPI.NewClient(ctx)
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return
}
defer gcsClient.Close()
bkt := gcsClient.Bucket(strings.TrimPrefix(*gcsDestinationForLongRunningAnalysis, "gs://"))
rc, err := bkt.Object(fileName).NewReader(ctx)
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return
}
defer rc.Close()
slurp, err := ioutil.ReadAll(rc)
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return
}
resp := assetpb.AnalyzeIamPolicyResponse{}
var um = jsonpb.Unmarshaler{}
um.AllowUnknownFields = true
err = um.Unmarshal(bytes.NewReader(slurp), &resp)
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return
}
glog.V(20).Infof(" Parsed AnalyzeIamPolicyResponse from %s", fmt.Sprintf("%s/%s", *gcsDestinationForLongRunningAnalysis, fileName))
for _, result := range resp.MainAnalysis.AnalysisResults {
for _, acl := range result.AccessControlLists {
glog.V(2).Infof(" %s has access to resource %s", *identity, acl.Resources)
glog.V(2).Infof(" with capability %s", acl.Accesses)
glog.V(2).Infof(" from node [%s]\n", result.AttachedResourceFullName)
}
if result.IamBinding.Condition != nil {
glog.V(2).Infof(" With Condition [%s]\n", result.IamBinding.Condition.Expression)
}
if stringInSlice(*identity, result.IamBinding.Members) {
glog.V(2).Info(" user is directly included in the role binding ")
} else {
glog.V(2).Info(" user is included in the role binding through a group hierarchy: ", getIdentityAncestry(result.IdentityList, *identity, []string{*identity}))
}
}
recurseDelegationForResource(*identity, *checkResource, resp)
}
return
} else if *usePolicyTroubleshooter {
if *permissionToCheck == "" || *checkResource == "" || *identity == "" {
glog.Errorf("Specify, permissionToCheck, checkResource and identity must be specified")
return
}
glog.V(2).Infof("Getting PolicyTroubleshooter")
if len(strings.Split(*identity, ":")) > 1 {
*identity = strings.Split(*identity, ":")[1]
}
creds, err := google.FindDefaultCredentials(ctx)
if err != nil {
glog.Fatal(err)
}
proj := creds.ProjectID
if *projectID != "" {
proj = *projectID
}
policyClient, err := policytroubleshooter.NewIamCheckerClient(ctx, option.WithQuotaProject(proj), option.WithTokenSource(ts))
if err != nil {
glog.Fatal(err)
}
req := &policypb.TroubleshootIamPolicyRequest{
AccessTuple: &policypb.AccessTuple{
Principal: *identity,
FullResourceName: *checkResource,
Permission: *permissionToCheck,
},
}
resp, err := policyClient.TroubleshootIamPolicy(ctx, req)
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return
}
glog.V(10).Infof(" User's AccessState %s\n", resp.Access)
for _, r := range resp.ExplainedPolicies {
if r.Access == policypb.AccessState_GRANTED {
glog.V(10).Infof(" User's AccessState granted at %s\n", r.FullResourceName)
// for _, b := range r.Policy.Bindings {
// glog.V(20).Infof(" which has roles %s\n", b.Role)
// }
for _, be := range r.BindingExplanations {
if be.Access == policypb.AccessState_GRANTED {
glog.V(10).Infof(" user has binding with permission via roles %s\n", be.Role)
glog.V(10).Infof(" through membership %s\n", be.Memberships)
}
}
}
if r.Access == policypb.AccessState_UNKNOWN_CONDITIONAL {
glog.V(10).Infof(" User may have Conditional access %s\n", r.FullResourceName)
}
}
}
glog.V(10).Infof("================ Determining Hierarchy for resource %s\n", *checkResource)
err = getScopedRoles(ctx, ts, *checkResource, *scope, permstoTest)
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return
}
}
func getScopedRoles(ctx context.Context, ts oauth2.TokenSource, resource string, scope string, permissionList []string) error {
glog.V(2).Infof("Getting ScopedPermission for resource [%s] in scope [%s]", resource, scope)
// TODO: combine code below with verifyPermissionAsUser() function since the same checks are done there
var assetType string
var query string
// BQ Tables
// bigquery.googleapis.com/projects/project-id/datasets/dataset-id/tables/table-id
// bigqueryTablesRegex = "//bigquery.googleapis.com/projects/(.+)/datasets/(.+)/tables/(.+)"
re := regexp.MustCompile(bigqueryTablesRegex)
res := re.FindStringSubmatch(resource)
if len(res) == 4 {
glog.V(2).Infof("==== Scoped Resource is BigQuery Table ==== %s\n", res[1])
var bigQueryService *bigquery.Service
assetType = assetTypeBQTable
query = res[3]
bigQueryService, err := bigquery.NewService(ctx, option.WithTokenSource(ts))
if err != nil {
return err
}
resource := fmt.Sprintf("projects/%s/datasets/%s/tables/%s", res[1], res[2], res[3])
p, err := bigQueryService.Tables.GetIamPolicy(resource, &bigquery.GetIamPolicyRequest{}).Do()
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
for _, b := range p.Bindings {
glog.V(2).Infof(" Roles ==== %s\n", b.Role)
}
}
// BQ Dataset
// bigquery.googleapis.com/projects/project-id/datasets/dataset-id
// bigqueryDatasetRegex = "//bigquery.googleapis.com/projects/(.+)/datasets/(.+)"
re = regexp.MustCompile(bigqueryDatasetRegex)
res = re.FindStringSubmatch(resource)
if len(res) == 3 {
glog.V(2).Infof("==== Scoped Resource is BigQuery Dataset ==== %s\n", res[1])
assetType = assetTypeBQDataset
query = res[2]
var bigQueryService *bigquery.Service
bigQueryService, err := bigquery.NewService(ctx, option.WithTokenSource(ts))
if err != nil {
return err
}
//resource := fmt.Sprintf("projects/%s/datasets/%s", res[1], res[2])
p, err := bigQueryService.Datasets.Get(res[1], res[2]).Do()
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
for _, b := range p.Access {
glog.V(2).Infof(" Roles ==== %s\n", b.Role)
}
}
// ServiceAccounts
// iam.googleapis.com/projects/project-id/serviceAccounts/service-account-email
// iamServiceAccountsRegex = "//iam.googleapis.com/projects/(.+)/serviceAccounts/(.+)"
re = regexp.MustCompile(iamServiceAccountsRegex)
res = re.FindStringSubmatch(*checkResource)
if len(res) == 3 {
glog.V(2).Infof("==== Scoped Resource is Service Accounts ==== %s\n", res[2])
assetType = assetTypeGCS
query = res[1]
iamService, err := iam.NewService(ctx)
if err != nil {
glog.Fatal(err)
}
svcAccountPolicy, err := iamService.Projects.ServiceAccounts.GetIamPolicy(fmt.Sprintf("projects/%s/serviceAccounts/%s", res[1], res[2])).Do()
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
for _, b := range svcAccountPolicy.Bindings {
glog.V(2).Infof(" Roles ==== %s\n", b.Role)
}
}
// IAP AppEngine
// //iap.googleapis.com/projects/project-number/iap_web/appengine-project-id/services/app-service-id
// iapAppEngineRegex = "//iap.googleapis.com/projects/(.+)/iap_web/appengine-(.+)/services/(.+)"
re = regexp.MustCompile(iapAppEngineRegex)
res = re.FindStringSubmatch(*checkResource)
if len(res) == 4 {
glog.V(2).Infof("==== Resource is IAP AppEngine Resource ==== %s\n", res[2])
assetType = assetTypeAppEngineService
query = res[2]
var iapService *iap.Service
iapService, err := iap.NewService(ctx, option.WithTokenSource(ts))
if err != nil {
return err
}
ciamResp, err := iapService.V1.GetIamPolicy(fmt.Sprintf("projects/%s/iap_web/appengine-%s/services/%s", res[1], res[2], res[3]), &iap.GetIamPolicyRequest{}).Do()
if err != nil {
glog.V(2).Infof(" Error getting IAM Permissions: %s\n", err)
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
for _, b := range ciamResp.Bindings {
glog.V(2).Infof(" Roles ==== %s\n", b.Role)
}
}
// GCS:
// assetTypeGCS=storage.googleapis.com/Bucket
// storageBucketsRegex="//storage.googleapis.com/projects/_/buckets/(.+)"
re = regexp.MustCompile(storageBucketsRegex)
res = re.FindStringSubmatch(resource)
if len(res) == 2 {
glog.V(2).Infof("==== Scoped Resource is GCS Bucket ==== %s\n", res[1])
assetType = assetTypeGCS
query = res[1]
storageClient, err := storageAPI.NewClient(ctx)
if err != nil {
glog.Fatal(err)
}
bkt := storageClient.Bucket(res[1])
p, err := bkt.IAM().Policy(ctx)
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
// TODO: handle custom roles and conditions
// `projects/{PROJECT_ID}/roles/{CUSTOM_ROLE_ID}
for _, n := range p.Roles() {
glog.V(2).Infof(" Roles ==== %s\n", n)
// roles/storage.objectViewer_withcond_71ee91d0ed30fbae053c
// oirsp, err := ors.Get(string(n)).Do()
// if err != nil {
// err := handleError(err)
// if err != nil {
// glog.Fatal(err)
// }
// return nil, err
// }
// glog.V(2).Infof(" Role Description ==== %v\n", oirsp.IncludedPermissions)
}
}
// IAP Backend Service
// iap.googleapis.com/projects/project-number/iap_web/compute/services/backend-service-id or backend-service-name
// iapGCERegex = "//iap.googleapis.com/projects/(.+)/iap_web/compute/services/(.+)""
re = regexp.MustCompile(iapGCERegex)
res = re.FindStringSubmatch(resource)
if len(res) == 3 {
glog.V(2).Infof("==== Scoped Resource is IAP Backend Service ==== %s\n", res[2])
assetType = assetTypeBackendService
query = res[2]
var iapService *iap.Service
iapService, err := iap.NewService(ctx, option.WithTokenSource(ts))
if err != nil {
return err
}
ciamResp, err := iapService.V1.GetIamPolicy(fmt.Sprintf("projects/%s/iap_web/compute/services/%s", res[1], res[2]), &iap.GetIamPolicyRequest{}).Do()
if err != nil {
glog.V(2).Infof(" Error getting IAM Permissions: %s\n", err)
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
for _, b := range ciamResp.Bindings {
glog.V(2).Infof(" Roles ==== %s\n", b.Role)
}
}
// GCE Instance
// "compute.googleapis.com/Instance"
// //compute.googleapis.com/projects/project-id/zones/zone/instances/instance-id
// computeInstanceRegex = "//compute.googleapis.com/projects/(.+)/zones/(.+)/instances/(.+)$"
re = regexp.MustCompile(computeInstanceRegex)
res = re.FindStringSubmatch(resource)
if len(res) == 4 {
glog.V(2).Infof("==== Scoped Resource is GCE Instance ==== %s\n", res[3])
assetType = assetTypeGCEInstance
query = res[3]
var computeService *compute.Service
computeService, err := compute.NewService(ctx, option.WithTokenSource(ts))
if err != nil {
return err
}
ciamResp, err := computeService.Instances.GetIamPolicy(res[1], res[2], res[3]).Do()
if err != nil {
glog.V(2).Infof(" Error getting IAM Permissions: %s\n", err)
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
for _, b := range ciamResp.Bindings {
glog.V(2).Infof(" Roles ==== %s\n", b.Role)
}
}
// Projects
// resourceManagerProjectsRegex = "//cloudresourcemanager.googleapis.com/projects/(.+)"
// assetTypeProject = "cloudresourcemanager.googleapis.com/Project"
re = regexp.MustCompile(resourceManagerProjectsRegex)
res = re.FindStringSubmatch(resource)
if len(res) == 2 {
glog.V(2).Infof("==== Scoped Resource is Project ==== %s\n", res[1])
assetType = assetTypeProject
query = res[1]
var crmService *crmv1.Service
crmService, err := crmv1.NewService(ctx, option.WithTokenSource(ts))
if err != nil {
return err
}
ciamResp, err := crmService.Projects.GetIamPolicy(res[1], &crmv1.GetIamPolicyRequest{}).Do()
if err != nil {
glog.V(2).Infof(" Error getting IAM Permissions: %s\n", err)
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
for _, b := range ciamResp.Bindings {
glog.V(2).Infof(" Roles ==== %s\n", b.Role)
}
}
// Folders
// resourceManagerFoldersRegex = "//cloudresourcemanager.googleapis.com/folders/(.+)"
// assetTypeFolder = "cloudresourcemanager.googleapis.com/Folder"
re = regexp.MustCompile(resourceManagerFoldersRegex)
res = re.FindStringSubmatch(resource)
if len(res) == 2 {
glog.V(2).Infof("==== Scoped Resource is Folder ==== %s\n", res[1])
assetType = assetTypeFolder
query = res[1]
var crmService2 *crmv2.Service
crmService2, err := crmv2.NewService(ctx, option.WithTokenSource(ts))
if err != nil {
return err
}
ciamResp, err := crmService2.Folders.GetIamPolicy(fmt.Sprintf("folders/%s", res[1]), &crmv2.GetIamPolicyRequest{}).Do()
if err != nil {
glog.V(2).Infof(" Error getting IAM Permissions: %s\n", err)
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
for _, b := range ciamResp.Bindings {
glog.V(2).Infof(" Roles ==== %s\n", b.Role)
}
f, err := crmService2.Folders.Get(fmt.Sprintf("folders/%s", res[1])).Do()
if err != nil {
glog.V(2).Infof(" Error getting IAM Permissions: %s\n", err)
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
glog.V(2).Infof(" Folder: [%s]\n", f.Name)
ppolicy, err := crmService2.Folders.GetIamPolicy(f.Name, &crmv2.GetIamPolicyRequest{}).Context(ctx).Do()
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
for _, b := range ppolicy.Bindings {
glog.V(10).Infof(" Policy Binding %s", b.Role)
}
}
// Organization
// resourceManagerOrganizationRegex = "//cloudresourcemanager.googleapis.com/organizations/(.+)"
// assetTypeFolder = "cloudresourcemanager.googleapis.com/Organization"
re = regexp.MustCompile(resourceManagerOrganizationRegex)
res = re.FindStringSubmatch(resource)
if len(res) == 2 {
glog.V(2).Infof("==== Scoped Resource is Folder ==== %s\n", res[1])
assetType = assetTypeOrganization
query = res[1]
var crmService1 *crmv1.Service
crmService1, err := crmv1.NewService(ctx, option.WithTokenSource(ts))
if err != nil {
return err
}
ciamResp, err := crmService1.Organizations.GetIamPolicy(fmt.Sprintf("organizations/%s", res[1]), &crmv1.GetIamPolicyRequest{}).Do()
if err != nil {
glog.V(2).Infof(" Error getting IAM Permissions: %s\n", err)
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
for _, b := range ciamResp.Bindings {
glog.V(2).Infof(" Roles ==== %s\n", b.Role)
}
f, err := crmService1.Organizations.Get(fmt.Sprintf("organizations/%s", res[1])).Do()
if err != nil {
glog.V(2).Infof(" Error getting IAM Permissions: %s\n", err)
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
glog.V(2).Infof(" Organizations: [%s]\n", f.Name)
ppolicy, err := crmService1.Organizations.GetIamPolicy(f.Name, &crmv1.GetIamPolicyRequest{}).Context(ctx).Do()
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
for _, b := range ppolicy.Bindings {
glog.V(10).Infof(" Policy Binding %s", b.Role)
}
}
//*******************************************************************************************************************
glog.V(2).Infof(" SearchingAssets of type [%s] with query [name:%s] \n", assetType, query)
if assetType == assetTypeFolder || assetType == assetTypeOrganization {
glog.V(2).Infof(" AssetType [%s] does not support GetAncestry()", assetType)
return nil
}
assetClient, err := asset.NewClient(ctx, option.WithQuotaProject(*projectID), option.WithTokenSource(ts))
if err != nil {
glog.Fatal(err)
}
req := &assetpb.SearchAllResourcesRequest{
Scope: scope,
AssetTypes: []string{assetType},
Query: fmt.Sprintf("name:%s", query),
}
respItr := assetClient.SearchAllResources(ctx, req)
for {
r, err := respItr.Next()
if err == iterator.Done {
break
}
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
crmService1, err := crmv1.NewService(ctx)
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
crmService2, err := crmv2.NewService(ctx)
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
// uri: https://cloudresourcemanager.googleapis.com/v1/projects/cicp-oidc:getAncestry?alt=json
pss, err := crmService1.Projects.GetAncestry(strings.TrimLeft(r.Project, "projects/"), &crmv1.GetAncestryRequest{}).Do()
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
for _, a := range pss.Ancestor {
glog.V(2).Infof(" Ancestor: [%s/%s]\n", a.ResourceId.Type, a.ResourceId.Id)
// https://cloudresourcemanager.googleapis.com/v1/projects/cicp-oidc:getIamPolicy?alt=json
if a.ResourceId.Type == "project" {
glog.V(10).Infof(" Project: [%s]\n", a.ResourceId.Id)
ppolicy, err := crmService1.Projects.GetIamPolicy(a.ResourceId.Id, &crmv1.GetIamPolicyRequest{}).Context(ctx).Do()
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
for _, b := range ppolicy.Bindings {
glog.V(10).Infof(" Policy Binding %s", b.Role)
}
}
// https://cloudresourcemanager.googleapis.com/v2/folders/750467892309:getIamPolicy?alt=json
if a.ResourceId.Type == "folder" {
glog.V(2).Infof(" Folder: [%s]\n", a.ResourceId.Id)
ppolicy, err := crmService2.Folders.GetIamPolicy(fmt.Sprintf("folders/%s", a.ResourceId.Id), &crmv2.GetIamPolicyRequest{}).Context(ctx).Do()
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
for _, b := range ppolicy.Bindings {
glog.V(10).Infof(" Policy Binding %s", b.Role)
}
}
// https://cloudresourcemanager.googleapis.com/v1/organizations/673208786098:getIamPolicy?alt=json
if a.ResourceId.Type == "organization" {
glog.V(2).Infof(" Organization: [%s]\n", a.ResourceId.Id)
ppolicy, err := crmService1.Organizations.GetIamPolicy(fmt.Sprintf("organizations/%s", a.ResourceId.Id), &crmv1.GetIamPolicyRequest{}).Context(ctx).Do()
if err != nil {
err := handleError(err)
if err != nil {
glog.Fatal(err)
}
return err
}
for _, b := range ppolicy.Bindings {
glog.V(10).Infof(" Policy Binding %s", b.Role)
}
}
}
}
return nil
}
func remove(urlList []string, remove []string) []string {
for i := 0; i < len(urlList); i++ {
url := urlList[i]
for _, rem := range remove {
if url == rem {
urlList = append(urlList[:i], urlList[i+1:]...)
i--
break
}
}
}
return urlList
}
func handleError(err error) error {
prettyErrors := gcperrors.New(gcperrors.Error{
Err: err,
PrettyPrint: true,
})
glog.Errorf("%s", prettyErrors)
return err
}
func stringInSlice(a string, list []string) bool {
for _, b := range list {
if b == a {
return true
}
}
return false
}
func getIdentityAncestry(il *assetpb.IamPolicyAnalysisResult_IdentityList, target string, curr []string) []string {
for _, l := range il.GroupEdges {
if l.TargetNode == target {
return getIdentityAncestry(il, l.SourceNode, append(curr, fmt.Sprintf(" --> %s ", l.SourceNode)))
}
}
return curr
}
func recurseDelegationForResource(lidentity, lresource string, resp assetpb.AnalyzeIamPolicyResponse) {
for _, result := range resp.ServiceAccountImpersonationAnalysis {
for _, r := range result.AnalysisResults {
for _, n := range r.IdentityList.Identities {
if n.Name == lidentity {
rn := transformResourceName(r.AttachedResourceFullName, lresource)
if rn == lresource {
glog.V(2).Infof(" %s has iam permissions %s on [%s]", lidentity, r.IamBinding.Role, r.AttachedResourceFullName)