feat(engine): add --max-resolver-depth flag

docs/commands.md

@@ -58,6 +58,7 @@ Use "kics [command] --help" for more information about a command.
 |      --input-data string           |  path to query input data files|
 |  -b, --libraries-path string       |  path to directory with libraries (default "./assets/libraries")|
 |      --max-file-size int           |  max file size permitted for scanning, in MB (default 5)|
+|      --max-resolver-depth int      |  max depth to which the resolver will traverse to resolve files (default 15)|
 |      --minimal-ui                  |  simplified version of CLI output|
 |      --no-progress                 |  hides the progress bar|
 |      --output-name string          |  name used on report creations (default "results")|

docs/dockerhub.md

@@ -120,6 +120,8 @@ Flags:
                                       example: 'e69890e6-fce5-461d-98ad-cb98318dfc96,4728cd65-a20c-49da-8b31-9c08b423e4db'
       --input-data string             path to query input data files
   -b, --libraries-path string         path to directory with libraries (default "./assets/libraries")
+      --max-file-size int             max file size permitted for scanning, in MB (default 5)
+      --max-resolver-depth int        max depth to which the resolver will traverse to resolve files (default 15)
       --minimal-ui                    simplified version of CLI output
       --no-progress                   hides the progress bar
       --output-name string            name used on report creations (default "results")

e2e/fixtures/E2E_CLI_094_RESULT.json

@@ -0,0 +1,54 @@
+{
+	"kics_version": "development",
+	"files_scanned": 1,
+	"lines_scanned": 19,
+	"files_parsed": 1,
+	"lines_parsed": 19,
+	"lines_ignored": 0,
+	"files_failed_to_scan": 0,
+	"queries_total": 17,
+	"queries_failed_to_execute": 0,
+	"queries_failed_to_compute_similarity_id": 0,
+	"scan_id": "console",
+	"severity_counters": {
+		"CRITICAL": 0,
+		"HIGH": 0,
+		"INFO": 1,
+		"LOW": 0,
+		"MEDIUM": 0,
+		"TRACE": 0
+	},
+	"total_counter": 1,
+	"total_bom_resources": 0,
+	"start": "2024-05-06T15:45:28.1028682+01:00",
+	"end": "2024-05-06T15:45:29.6882643+01:00",
+	"paths": [
+		"/path/test/fixtures/resolve_references"
+	],
+	"queries": [
+		{
+			"query_name": "Components Schema Definition Is Unused",
+			"query_id": "962fa01e-b791-4dcc-b04a-4a3e7389be5e",
+			"query_url": "https://swagger.io/specification/#components-object",
+			"severity": "INFO",
+			"platform": "OpenAPI",
+			"category": "Best Practices",
+			"experimental": false,
+			"description": "Components schemas definitions should be referenced or removed from Open API definition",
+			"description_id": "5cdc0f3b",
+			"files": [
+				{
+					"file_name": "path\\test\\fixtures\\resolve_references\\swagger.yaml",
+					"similarity_id": "ff39e561509c13315ce34a0be602a974d63231b70cb5cdf778109e062302f8eb",
+					"line": 17,
+					"issue_type": "IncorrectValue",
+					"search_key": "components.schemas.{{MyResponse}}",
+					"search_line": -1,
+					"search_value": "",
+					"expected_value": "Schema should be used as reference somewhere",
+					"actual_value": "Schema is not used as reference"
+				}
+			]
+		}
+	]
+}

e2e/fixtures/E2E_CLI_095_RESULT.json

@@ -0,0 +1,29 @@
+{
+	"kics_version": "development",
+	"files_scanned": 2,
+	"lines_scanned": 22,
+	"files_parsed": 2,
+	"lines_parsed": 6887,
+	"lines_ignored": 0,
+	"files_failed_to_scan": 0,
+	"queries_total": 0,
+	"queries_failed_to_execute": 0,
+	"queries_failed_to_compute_similarity_id": 0,
+	"scan_id": "console",
+	"severity_counters": {
+		"CRITICAL": 0,
+		"HIGH": 0,
+		"INFO": 0,
+		"LOW": 0,
+		"MEDIUM": 0,
+		"TRACE": 0
+	},
+	"total_counter": 0,
+	"total_bom_resources": 0,
+	"start": "2024-05-06T15:47:33.0217097+01:00",
+	"end": "2024-05-06T15:47:35.1422829+01:00",
+	"paths": [
+		"/path/test/fixtures/resolve_circular_loop"
+	],
+	"queries": []
+}

e2e/fixtures/assets/scan_help

@@ -44,6 +44,7 @@ Flags:
       --input-data string             path to query input data files
   -b, --libraries-path string         path to directory with libraries (default "./assets/libraries")
       --max-file-size int             max file size permitted for scanning, in MB (default 5)
+      --max-resolver-depth int        max depth to which the resolver will traverse to resolve files (default 15)
       --minimal-ui                    simplified version of CLI output
       --no-progress                   hides the progress bar
       --old-severities                uses old severities in query results

e2e/testcases/e2e-cli-094_max_resolver_depth_0.go

@@ -0,0 +1,30 @@
+package testcases
+
+// E2E-CLI-094 - KICS  scan and ignore references
+// should perform the scan successfully and return exit code 20
+// this test is similar to E2E-CLI-071. Since the '--max-resolver-path' parameter is set to 0, it will not resolve any files
+func init() { //nolint
+	testSample := TestCase{
+		Name: "should perform a valid scan and not resolve references [E2E-CLI-094]",
+		Args: args{
+			Args: []cmdArgs{
+				[]string{"scan", "-o", "/path/e2e/output",
+					"--output-name", "E2E_CLI_094_RESULT",
+					"-p", "\"/path/test/fixtures/resolve_references\"",
+					"-i", "6c35d2c6-09f2-4e5c-a094-e0e91327071d,962fa01e-b791-4dcc-b04a-4a3e7389be5e",
+					"--enable-openapi-refs",
+					"--max-resolver-depth", "0",
+				},
+			},
+			ExpectedResult: []ResultsValidation{
+				{
+					ResultsFile:    "E2E_CLI_094_RESULT",
+					ResultsFormats: []string{"json"},
+				},
+			},
+		},
+		WantStatus: []int{20},
+	}
+
+	Tests = append(Tests, testSample)
+}

e2e/testcases/e2e-cli-095_max_resolver_depth_default.go

@@ -0,0 +1,29 @@
+package testcases
+
+// E2E-CLI-095 - KICS  scan and ignore references
+// should perform the scan successfully and return exit code 0
+// this test sample contains a circular loop. It will stop after 15 iterations, having parsed 6887 lines
+func init() { //nolint
+	testSample := TestCase{
+		Name: "should perform a valid scan and resolve references [E2E-CLI-095]",
+		Args: args{
+			Args: []cmdArgs{
+				[]string{"scan", "-o", "/path/e2e/output",
+					"--output-name", "E2E_CLI_095_RESULT",
+					"-p", "\"/path/test/fixtures/resolve_circular_loop\"",
+					"-i", "a88baa34-e2ad-44ea-ad6f-8cac87bc7c71",
+					"--max-resolver-depth", "15",
+				},
+			},
+			ExpectedResult: []ResultsValidation{
+				{
+					ResultsFile:    "E2E_CLI_095_RESULT",
+					ResultsFormats: []string{"json"},
+				},
+			},
+		},
+		WantStatus: []int{0},
+	}
+
+	Tests = append(Tests, testSample)
+}

internal/console/assets/scan-flags.json

@@ -227,5 +227,11 @@
   "shorthandFlag": "",
   "defaultValue": "false",
   "usage": "uses old severities in query results"
+  },
+  "max-resolver-depth": {
+    "flagType": "int",
+    "shorthandFlag": "",
+    "defaultValue": "15",
+    "usage": "max depth to which the resolver will traverse to resolve files"
   }
 }

internal/console/flags/scan_flags.go

@@ -38,4 +38,5 @@ const (
 	ParallelScanFile        = "parallel"
 	MaxFileSizeFlag         = "max-file-size"
 	UseOldSeveritiesFlag    = "old-severities"
+	MaxResolverDepth        = "max-resolver-depth"
 )

internal/console/pre_scan.go

@@ -158,6 +158,7 @@ func (console *console) preScan() {
 	log.Info().Msgf("CPU: %.1f", cpu)
 
 	log.Info().Msgf("Max file size permitted for scanning: %d MB", flags.GetIntFlag(flags.MaxFileSizeFlag))
+	log.Info().Msgf("Max resolver depth permitted for resolving files: %d", flags.GetIntFlag(flags.MaxResolverDepth))
 
 	noProgress := flags.GetBoolFlag(flags.NoProgressFlag)
 	if strings.EqualFold(flags.GetStrFlag(flags.LogLevelFlag), "debug") {

internal/console/remediate.go

@@ -79,6 +79,7 @@ func remediate() error {
 	resultsPath := flags.GetStrFlag(flags.Results)
 	include := flags.GetMultiStrFlag(flags.IncludeIds)
 	openAPIResolveReferences := flags.GetBoolFlag(flags.OpenAPIReferencesFlag)
+	maxResolverDepth := flags.GetIntFlag(flags.MaxResolverDepth)
 
 	filepath.Clean(resultsPath)
 
@@ -106,7 +107,7 @@ func remediate() error {
 
 	for filePath := range remediationSets {
 		fix := remediationSets[filePath].(remediation.Set)
-		err = summary.RemediateFile(filePath, fix, openAPIResolveReferences)
+		err = summary.RemediateFile(filePath, fix, openAPIResolveReferences, maxResolverDepth)
 		if err != nil {
 			return err
 		}

internal/console/scan.go

@@ -143,6 +143,7 @@ func getScanParameters(changedDefaultQueryPath, changedDefaultLibrariesPath bool
 		ParallelScanFlag:            flags.GetIntFlag(flags.ParallelScanFile),
 		MaxFileSizeFlag:             flags.GetIntFlag(flags.MaxFileSizeFlag),
 		UseOldSeverities:            flags.GetBoolFlag(flags.UseOldSeveritiesFlag),
+		MaxResolverDepth:            flags.GetIntFlag(flags.MaxResolverDepth),
 	}
 
 	return &scanParams

internal/constants/constants.go

@@ -125,9 +125,6 @@ const (
 
 	// LogFormatPretty - print log more readable
 	LogFormatPretty = "pretty"
-
-	// MaxResolvedFiles - max files kics will resolve to prevent circular cycles
-	MaxResolvedFiles = 50
 )
 
 // GetRelease - returns the current release in the format 'kics@version' to be used by sentry

pkg/kics/resolver_sink.go

@@ -16,7 +16,11 @@ import (
 	"github.com/rs/zerolog/log"
 )
 
-func (s *Service) resolverSink(ctx context.Context, filename, scanID string, openAPIResolveReferences bool) ([]string, error) {
+func (s *Service) resolverSink(
+	ctx context.Context,
+	filename, scanID string,
+	openAPIResolveReferences bool,
+	maxResolverDepth int) ([]string, error) {
 	kind := s.Resolver.GetType(filename)
 	if kind == model.KindCOMMON {
 		return []string{}, nil
@@ -31,7 +35,7 @@ func (s *Service) resolverSink(ctx context.Context, filename, scanID string, ope
 		s.Tracker.TrackFileFound(rfile.FileName)
 
 		isMinified := minified.IsMinified(rfile.FileName, rfile.Content)
-		documents, err := s.Parser.Parse(rfile.FileName, rfile.Content, openAPIResolveReferences, isMinified)
+		documents, err := s.Parser.Parse(rfile.FileName, rfile.Content, openAPIResolveReferences, isMinified, maxResolverDepth)
 		if err != nil {
 			if documents.Kind == "break" {
 				return []string{}, nil
@@ -41,7 +45,9 @@ func (s *Service) resolverSink(ctx context.Context, filename, scanID string, ope
 		}
 
 		if kind == model.KindHELM {
-			ignoreList, errorIL := s.getOriginalIgnoreLines(rfile.FileName, rfile.OriginalData, openAPIResolveReferences, isMinified)
+			ignoreList, errorIL := s.getOriginalIgnoreLines(
+				rfile.FileName, rfile.OriginalData,
+				openAPIResolveReferences, isMinified, maxResolverDepth)
 			if errorIL == nil {
 				documents.IgnoreLines = ignoreList
 
@@ -100,11 +106,12 @@ func (s *Service) resolverSink(ctx context.Context, filename, scanID string, ope
 
 func (s *Service) getOriginalIgnoreLines(filename string,
 	originalFile []uint8,
-	openAPIResolveReferences, isMinified bool) (ignoreLines []int, err error) {
+	openAPIResolveReferences, isMinified bool,
+	maxResolverDepth int) (ignoreLines []int, err error) {
 	refactor := regexp.MustCompile(`.*\n?.*KICS_HELM_ID.+\n`).ReplaceAll(originalFile, []uint8{})
 	refactor = regexp.MustCompile(`{{-\s*(.*?)\s*}}`).ReplaceAll(refactor, []uint8{})
 
-	documentsOriginal, err := s.Parser.Parse(filename, refactor, openAPIResolveReferences, isMinified)
+	documentsOriginal, err := s.Parser.Parse(filename, refactor, openAPIResolveReferences, isMinified, maxResolverDepth)
 	if err == nil {
 		ignoreLines = documentsOriginal.IgnoreLines
 	}

pkg/kics/resolver_sink_test.go

@@ -59,7 +59,7 @@ func Test_ResolverSink(t *testing.T) {
 		t.Run(tt.name, func(t *testing.T) {
 			s := tt.service
 
-			excluded, err := s.resolverSink(ctx, tt.path, "", false)
+			excluded, err := s.resolverSink(ctx, tt.path, "", false, 15)
 			if err != nil {
 				t.Fatalf(`ResolverSink failed for path %s with error: %v`, tt.path, err)
 			}
@@ -95,7 +95,7 @@ func Test_ResolverSink_ParseError(t *testing.T) {
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			s := tt.service
-			_, err := s.resolverSink(ctx, tt.path, "", false)
+			_, err := s.resolverSink(ctx, tt.path, "", false, 15)
 			require.EqualError(t, err, tt.expectedErrorString)
 		})
 	}

pkg/kics/service.go

@@ -66,6 +66,7 @@ type Service struct {
 func (s *Service) PrepareSources(ctx context.Context,
 	scanID string,
 	openAPIResolveReferences bool,
+	maxResolverDepth int,
 	wg *sync.WaitGroup, errCh chan<- error) {
 	defer wg.Done()
 	// CxSAST query under review
@@ -74,10 +75,10 @@ func (s *Service) PrepareSources(ctx context.Context,
 		ctx,
 		s.Parser.SupportedExtensions(),
 		func(ctx context.Context, filename string, rc io.ReadCloser) error {
-			return s.sink(ctx, filename, scanID, rc, data, openAPIResolveReferences)
+			return s.sink(ctx, filename, scanID, rc, data, openAPIResolveReferences, maxResolverDepth)
 		},
 		func(ctx context.Context, filename string) ([]string, error) { // Sink used for resolver files and templates
-			return s.resolverSink(ctx, filename, scanID, openAPIResolveReferences)
+			return s.resolverSink(ctx, filename, scanID, openAPIResolveReferences, maxResolverDepth)
 		},
 	); err != nil {
 		errCh <- errors.Wrap(err, "failed to read sources")

pkg/kics/sink.go

@@ -28,7 +28,8 @@ var (
 
 func (s *Service) sink(ctx context.Context, filename, scanID string,
 	rc io.Reader, data []byte,
-	openAPIResolveReferences bool) error {
+	openAPIResolveReferences bool,
+	maxResolverDepth int) error {
 	s.Tracker.TrackFileFound(filename)
 	log.Debug().Msgf("Starting to process file %s", filename)
 
@@ -42,7 +43,7 @@ func (s *Service) sink(ctx context.Context, filename, scanID string,
 	if err != nil {
 		return errors.Wrapf(err, "failed to get file content: %s", filename)
 	}
-	documents, err := s.Parser.Parse(filename, *content, openAPIResolveReferences, c.IsMinified)
+	documents, err := s.Parser.Parse(filename, *content, openAPIResolveReferences, c.IsMinified, maxResolverDepth)
 	if err != nil {
 		log.Err(err).Msgf("failed to parse file content: %s", filename)
 		return nil

pkg/parser/ansible/ini/config/parser.go

@@ -13,7 +13,7 @@ import (
 type Parser struct {
 }
 
-func (p *Parser) Resolve(fileContent []byte, _ string, _ bool) ([]byte, error) {
+func (p *Parser) Resolve(fileContent []byte, _ string, _ bool, _ int) ([]byte, error) {
 	return fileContent, nil
 }
 

pkg/parser/ansible/ini/hosts/parser.go

@@ -13,7 +13,7 @@ import (
 type Parser struct {
 }
 
-func (p *Parser) Resolve(fileContent []byte, _ string, _ bool) ([]byte, error) {
+func (p *Parser) Resolve(fileContent []byte, _ string, _ bool, _ int) ([]byte, error) {
 	return fileContent, nil
 }
 

pkg/parser/buildah/parser.go

@@ -51,7 +51,7 @@ const (
 )
 
 // Resolve - replace or modifies in-memory content before parsing
-func (p *Parser) Resolve(fileContent []byte, _ string, _ bool) ([]byte, error) {
+func (p *Parser) Resolve(fileContent []byte, _ string, _ bool, _ int) ([]byte, error) {
 	return fileContent, nil
 }
 

pkg/parser/buildah/parser_test.go

@@ -2,10 +2,10 @@ package buildah
 
 import (
 	"encoding/json"
-	"github.com/Checkmarx/kics/v2/pkg/model"
 	"reflect"
 	"testing"
 
+	"github.com/Checkmarx/kics/v2/pkg/model"
 	"github.com/stretchr/testify/require"
 )
 
@@ -320,7 +320,7 @@ func TestParser_Resolve(t *testing.T) {
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
 			p := &Parser{}
-			got, err := p.Resolve(tt.args.fileContent, tt.args.filename, true)
+			got, err := p.Resolve(tt.args.fileContent, tt.args.filename, true, 15)
 			if (err != nil) != tt.wantErr {
 				t.Errorf("Parser.Resolve() error = %v, wantErr %v", err, tt.wantErr)
 				return

pkg/parser/docker/parser.go

@@ -34,7 +34,7 @@ type Command struct {
 }
 
 // Resolve - replace or modifies in-memory content before parsing
-func (p *Parser) Resolve(fileContent []byte, _ string, _ bool) ([]byte, error) {
+func (p *Parser) Resolve(fileContent []byte, _ string, _ bool, _ int) ([]byte, error) {
 	return fileContent, nil
 }