test: add fuzz test in chaoshub/handler (litmuschaos#4857)

* test: add fuzz test to GetChartsPath function in handler Signed-off-by: Soyeon Park <sypark9646@gmail.com> * test: add fuzz test to FuzzReadExperimentFile function in handler * Removed the ./types.go example in unit test handler_test.go/TestReadExperimentFile because it returns a file does not exist error, not the file is not a yaml error that the test is intended to return. Signed-off-by: Soyeon Park <sypark9646@gmail.com> * * test: Add the FuzzReadExperimentYAMLFile test in the handler_fuzz_test.go file Signed-off-by: Soyeon Park <sypark9646@gmail.com> * test: add fuzz test to FuzzIsFileExisting function in handler Signed-off-by: Soyeon Park <sypark9646@gmail.com> * test: add fuzz test to FuzzGetExperimentData, FuzzUnzipRemoteHub function in handler Signed-off-by: Soyeon Park <sypark9646@gmail.com> * refactor: remove unused imported library Signed-off-by: Soyeon Park <sypark9646@gmail.com> * fix: check yaml: control characters are not allowed Signed-off-by: Soyeon Park <sypark9646@gmail.com> * refactor: save goimport order Signed-off-by: Soyeon Park <sypark9646@gmail.com> --------- Signed-off-by: Soyeon Park <sypark9646@gmail.com> Signed-off-by: andoriyaprashant <prashantandoriya@gmail.com>
andoriyaprashant · Sep 7, 2024 · c98cfc0 · c98cfc0
1 parent af2c7e5
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diff --git a/chaoscenter/graphql/server/pkg/chaoshub/handler/handler_fuzz_test.go b/chaoscenter/graphql/server/pkg/chaoshub/handler/handler_fuzz_test.go
@@ -0,0 +1,291 @@
+package handler
+
+import (
+	"archive/zip"
+	"encoding/json"
+	"os"
+	"path/filepath"
+	"strings"
+	"testing"
+
+	fuzz "github.com/AdaLogics/go-fuzz-headers"
+	"github.com/google/uuid"
+	"github.com/litmuschaos/litmus/chaoscenter/graphql/server/graph/model"
+)
+
+func FuzzGetChartsPath(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte) {
+		fuzzConsumer := fuzz.NewConsumer(data)
+
+		chartsInput := model.CloningInput{}
+		err := fuzzConsumer.GenerateStruct(&chartsInput)
+		if err != nil {
+			return
+		}
+		projectID, _ := fuzzConsumer.GetString()
+		isDefault, _ := fuzzConsumer.GetBool()
+
+		result := GetChartsPath(chartsInput, projectID, isDefault)
+
+		if isDefault {
+			expected := DefaultPath + "default/" + chartsInput.Name + "/faults/"
+			if result != expected {
+				t.Errorf("Expected %s, got %s", expected, result)
+			}
+		} else {
+			expected := DefaultPath + projectID + "/" + chartsInput.Name + "/faults/"
+			if result != expected {
+				t.Errorf("Expected %s, got %s", expected, result)
+			}
+		}
+	})
+}
+
+func FuzzReadExperimentFile(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte, filename string) {
+		fuzzConsumer := fuzz.NewConsumer(data)
+
+		// Create a temporary directory
+		tmpDir, err := os.MkdirTemp("", "*-fuzztest")
+		if err != nil {
+			t.Fatal(err)
+		}
+		defer os.RemoveAll(tmpDir) // clean up
+
+		// Ensure the filename is valid and unique
+		safeFilename := filepath.Clean(filepath.Base(filename))
+		if isInvalidFilename(safeFilename) {
+			safeFilename = "test.yaml"
+		}
+		filePath := filepath.Join(tmpDir, safeFilename)
+		content := ChaosChart{}
+		err = fuzzConsumer.GenerateStruct(&content)
+		if err != nil {
+			return
+		}
+
+		jsonContent, _ := json.Marshal(content)
+		err = os.WriteFile(filePath, jsonContent, 0644)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		_, err = ReadExperimentFile(filePath)
+
+		if err != nil && !isInvalidYAML(jsonContent) {
+			t.Errorf("UnExpected error for valid YAML, got error: %v", err)
+		}
+		if err == nil && isInvalidYAML(jsonContent) {
+			t.Errorf("Expected error for invalid YAML, got nil")
+		}
+
+		_, err = ReadExperimentFile("./not_exist_file.yaml")
+		if err == nil {
+			t.Errorf("Expected error for file does not exist, got nil")
+		}
+	})
+}
+
+func FuzzGetExperimentData(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte, filename string) {
+		fuzzConsumer := fuzz.NewConsumer(data)
+
+		// Create a temporary directory
+		tmpDir, err := os.MkdirTemp("", "*-fuzztest")
+		if err != nil {
+			t.Fatal(err)
+		}
+		defer os.RemoveAll(tmpDir) // clean up
+
+		// Ensure the filename is valid and unique
+		safeFilename := filepath.Clean(filepath.Base(filename))
+		if isInvalidFilename(safeFilename) {
+			safeFilename = "test.yaml"
+		}
+		filePath := filepath.Join(tmpDir, safeFilename)
+		content := ChaosChart{}
+		err = fuzzConsumer.GenerateStruct(&content)
+		if err != nil {
+			return
+		}
+
+		jsonContent, _ := json.Marshal(content)
+		err = os.WriteFile(filePath, jsonContent, 0644)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		_, err = GetExperimentData(filePath)
+
+		if err != nil && !isInvalidYAML(jsonContent) && json.Valid(jsonContent) {
+			t.Errorf("UnExpected error for valid YAML, got error: %v", err)
+		}
+		if err == nil && isInvalidYAML(jsonContent) {
+			t.Errorf("Expected error for invalid YAML, got nil")
+		}
+
+		_, err = ReadExperimentFile("./not_exist_file.yaml")
+		if err == nil {
+			t.Errorf("Expected error for file does not exist, got nil")
+		}
+	})
+}
+
+func FuzzReadExperimentYAMLFile(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte, filename string) {
+		fuzzConsumer := fuzz.NewConsumer(data)
+
+		// Create a temporary directory
+		tmpDir, err := os.MkdirTemp("", "*-fuzztest")
+		if err != nil {
+			t.Fatal(err)
+		}
+		defer os.RemoveAll(tmpDir) // clean up
+
+		// Ensure the filename is valid and unique
+		safeFilename := filepath.Clean(filepath.Base(filename))
+		if isInvalidFilename(safeFilename) {
+			safeFilename = "test.yaml"
+		}
+		filePath := filepath.Join(tmpDir, safeFilename)
+		content := ChaosChart{}
+		err = fuzzConsumer.GenerateStruct(&content)
+		if err != nil {
+			return
+		}
+
+		jsonContent, _ := json.Marshal(content)
+		err = os.WriteFile(filePath, jsonContent, 0644)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		_, err = ReadExperimentYAMLFile(filePath)
+
+		if err != nil {
+			t.Errorf("UnExpected error for valid YAML, got error: %v", err)
+		}
+
+		_, err = ReadExperimentFile("./not_exist_file.yaml")
+		if err == nil {
+			t.Errorf("Expected error for file does not exist, got nil")
+		}
+	})
+}
+
+func FuzzUnzipRemoteHub(f *testing.F) {
+	f.Fuzz(func(t *testing.T, data []byte, filename string, projectID string) {
+		// Create a temporary directory
+		tmpDir, err := os.MkdirTemp("", "*-fuzztest")
+		if err != nil {
+			t.Fatal(err)
+		}
+		defer os.RemoveAll(tmpDir) // clean up
+
+		// Ensure the filename is valid and unique
+		safeFilename := filepath.Clean(filepath.Base(filename))
+		if isInvalidFilename(safeFilename) {
+			safeFilename = "test.zip"
+		}
+		if !strings.HasSuffix(safeFilename, ".zip") {
+			safeFilename += ".zip"
+		}
+		if isInvalidFilename(projectID) {
+			projectID = uuid.New().String()
+		}
+
+		filePath := filepath.Join(tmpDir, safeFilename)
+		// Create a valid zip file
+		err = createValidZipFile(filePath, data)
+		if err != nil {
+			t.Fatal(err)
+		}
+
+		err = UnzipRemoteHub(filePath, projectID)
+
+		if err != nil {
+			t.Errorf("UnExpected error for valid zip, got error: %v", err)
+		}
+
+		// Test with non-existent file
+		err = UnzipRemoteHub("./not_exist_file.zip", projectID)
+		if err == nil {
+			t.Errorf("Expected error for file does not exist, got nil")
+		}
+
+		// Test with non-zip file
+		nonZipPath := filepath.Join(tmpDir, "no_zip")
+		err = os.WriteFile(nonZipPath, []byte("not a zip file"), 0644)
+		if err != nil {
+			t.Fatal(err)
+		}
+		err = UnzipRemoteHub(nonZipPath, projectID)
+		if err == nil {
+			t.Errorf("Expected error for no zip, got nil")
+		}
+	})
+}
+
+func FuzzIsFileExisting(f *testing.F) {
+	f.Fuzz(func(t *testing.T, filename string) {
+		// Create a temporary directory
+		tmpDir, err := os.MkdirTemp("", "*-fuzztest")
+		if err != nil {
+			t.Fatal(err)
+		}
+		defer os.RemoveAll(tmpDir) // clean up
+
+		// Ensure the filename is valid and unique
+		safeFilename := filepath.Clean(filepath.Base(filename))
+		if isInvalidFilename(safeFilename) {
+			safeFilename = "test.yaml"
+		}
+		filePath := filepath.Join(tmpDir, safeFilename)
+		_, _ = os.Create(filePath)
+
+		result, err := IsFileExisting(filePath)
+		if !result {
+			t.Errorf("Expected true for existing file, got false")
+		}
+
+		result, err = IsFileExisting("./not_exist_file.yaml")
+		if result {
+			t.Errorf("Expected false for not existing file, got true")
+		}
+	})
+}
+
+func isInvalidFilename(filename string) bool {
+	return strings.IndexByte(filename, 0) != -1 || filename == "" || filename == "." || filename == ".." || filename == "/" || len(filename) > 255
+}
+
+func isInvalidYAML(data []byte) bool {
+	for _, b := range data {
+		if b < 32 || b == 127 {
+			return true
+		}
+	}
+	return false
+}
+
+func createValidZipFile(filename string, data []byte) error {
+	zipFile, err := os.Create(filename)
+	if err != nil {
+		return err
+	}
+	defer zipFile.Close()
+
+	zipWriter := zip.NewWriter(zipFile)
+	defer zipWriter.Close()
+
+	f, err := zipWriter.Create("test.txt")
+	if err != nil {
+		return err
+	}
+	_, err = f.Write(data)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
diff --git a/chaoscenter/graphql/server/pkg/chaoshub/handler/handler_test.go b/chaoscenter/graphql/server/pkg/chaoshub/handler/handler_test.go
@@ -72,11 +72,6 @@ func TestReadExperimentFile(t *testing.T) {
 			filePath: "./temp1.yaml",
 			isError:  true,
 		},
-		{
-			name:     "failure: file is not a yaml",
-			filePath: "./types.go",
-			isError:  true,
-		},
 	}
 	for _, tc := range testcases {
 		// when