Fixed panic for s3 and gcp transfers

cmd/flagsValidation.go

@@ -320,7 +320,10 @@ func validateShareProtocolCompatibility(
 ) error {
 
 	// We can ignore the error if we fail to get the share properties.
-	shareProtocol, _ := getShareProtocolType(ctx, serviceClient, resource, protocol)
+	shareProtocol, err := getShareProtocolType(ctx, serviceClient, resource, protocol)
+	if err != nil {
+		return err
+	}
 
 	if shareProtocol == common.ELocation.File() {
 		if isSource && fromTo.From() != common.ELocation.File() {
@@ -361,6 +364,10 @@ func getShareProtocolType(
 	}
 	shareName := fileURLParts.ShareName
 
+	if serviceClient == nil {
+		return common.ELocation.Unknown(), fmt.Errorf("failed to create file service client: %w", err)
+	}
+
 	fileServiceClient, err := serviceClient.FileServiceClient()
 	if err != nil {
 		return common.ELocation.Unknown(), fmt.Errorf("failed to create file service client: %w", err)
@@ -383,49 +390,16 @@ func getShareProtocolType(
 // Protocol compatibility validation for SMB and NFS transfers
 func validateProtocolCompatibility(ctx context.Context, fromTo common.FromTo, src, dst common.ResourceString, srcClient, dstClient *common.ServiceClient) error {
 
-	getUploadDownloadProtocol := func(fromTo common.FromTo) common.Location {
-		switch fromTo {
-		case common.EFromTo.LocalFile(), common.EFromTo.FileLocal():
-			return common.ELocation.File()
-		case common.EFromTo.LocalFileNFS(), common.EFromTo.FileNFSLocal():
-			return common.ELocation.FileNFS()
-		default:
-			return common.ELocation.Unknown()
+	if fromTo.From().IsFile() {
+		if err := validateShareProtocolCompatibility(ctx, src, srcClient, true, fromTo.From(), fromTo); err != nil {
+			return err
 		}
 	}
 
-	var srcProtocol, dstProtocol common.Location
-
-	// S2S Transfers
-	if fromTo.IsS2S() {
-		switch fromTo {
-		case common.EFromTo.FileFile():
-			srcProtocol, dstProtocol = common.ELocation.File(), common.ELocation.File()
-		case common.EFromTo.FileNFSFileNFS():
-			srcProtocol, dstProtocol = common.ELocation.FileNFS(), common.ELocation.FileNFS()
-		case common.EFromTo.FileNFSFileSMB():
-			srcProtocol, dstProtocol = common.ELocation.FileNFS(), common.ELocation.File()
-		case common.EFromTo.FileSMBFileNFS():
-			srcProtocol, dstProtocol = common.ELocation.File(), common.ELocation.FileNFS()
-		}
-
-		// Validate both source and destination
-		if err := validateShareProtocolCompatibility(ctx, src, srcClient, true, srcProtocol, fromTo); err != nil {
+	if fromTo.To().IsFile() {
+		if err := validateShareProtocolCompatibility(ctx, src, dstClient, false, fromTo.To(), fromTo); err != nil {
 			return err
 		}
-		return validateShareProtocolCompatibility(ctx, dst, dstClient, false, dstProtocol, fromTo)
-	}
-
-	// Uploads to File Shares
-	if fromTo.IsUpload() {
-		dstProtocol = getUploadDownloadProtocol(fromTo)
-		return validateShareProtocolCompatibility(ctx, dst, dstClient, false, dstProtocol, fromTo)
-	}
-
-	// Downloads from File Shares
-	if fromTo.IsDownload() {
-		srcProtocol = getUploadDownloadProtocol(fromTo)
-		return validateShareProtocolCompatibility(ctx, src, srcClient, true, srcProtocol, fromTo)
 	}
 
 	return nil

cmd/flagsValidation_test.go

@@ -0,0 +1,157 @@
+package cmd
+
+import (
+	"context"
+	"testing"
+
+	"github.com/Azure/azure-storage-azcopy/v10/common"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestValidateProtocolCompatibility(t *testing.T) {
+	a := assert.New(t)
+	ctx := context.Background()
+
+	// Test cases where validation should NOT be called (no File locations involved)
+	testCases := []struct {
+		name     string
+		fromTo   common.FromTo
+		shouldValidate bool
+		description string
+	}{
+		{
+			name:     "S3ToBlob",
+			fromTo:   common.EFromTo.S3Blob(),
+			shouldValidate: false,
+			description: "S3 to Blob should not validate (neither side is File)",
+		},
+		{
+			name:     "GCPToBlob", 
+			fromTo:   common.EFromTo.GCPBlob(),
+			shouldValidate: false,
+			description: "GCP to Blob should not validate (neither side is File)",
+		},
+		{
+			name:     "LocalToBlob",
+			fromTo:   common.EFromTo.LocalBlob(),
+			shouldValidate: false,
+			description: "Local to Blob should not validate (neither side is File)",
+		},
+		{
+			name:     "BlobToLocal",
+			fromTo:   common.EFromTo.BlobLocal(),
+			shouldValidate: false,
+			description: "Blob to Local should not validate (neither side is File)",
+		},
+		{
+			name:     "BlobToBlob",
+			fromTo:   common.EFromTo.BlobBlob(),
+			shouldValidate: false,
+			description: "Blob to Blob should not validate (neither side is File)",
+		},
+		{
+			name:     "LocalToBlobFS",
+			fromTo:   common.EFromTo.LocalBlobFS(),
+			shouldValidate: false,
+			description: "Local to BlobFS should not validate (neither side is File)",
+		},
+		{
+			name:     "LocalToFile",
+			fromTo:   common.EFromTo.LocalFile(),
+			shouldValidate: true,
+			description: "Local to File should validate (destination is File)",
+		},
+		{
+			name:     "FileToLocal",
+			fromTo:   common.EFromTo.FileLocal(),
+			shouldValidate: true,
+			description: "File to Local should validate (source is File)",
+		},
+		{
+			name:     "LocalToFileNFS",
+			fromTo:   common.EFromTo.LocalFileNFS(),
+			shouldValidate: true,
+			description: "Local to FileNFS should validate (destination is FileNFS)",
+		},
+		{
+			name:     "FileNFSToLocal",
+			fromTo:   common.EFromTo.FileNFSLocal(),
+			shouldValidate: true,
+			description: "FileNFS to Local should validate (source is FileNFS)",
+		},
+		{
+			name:     "FileToFile",
+			fromTo:   common.EFromTo.FileFile(),
+			shouldValidate: true,
+			description: "File to File should validate (both sides are File)",
+		},
+		{
+			name:     "FileNFSToFileNFS",
+			fromTo:   common.EFromTo.FileNFSFileNFS(),
+			shouldValidate: true,
+			description: "FileNFS to FileNFS should validate (both sides are FileNFS)",
+		},
+		{
+			name:     "FileToBlob",
+			fromTo:   common.EFromTo.FileBlob(),
+			shouldValidate: true,
+			description: "File to Blob should validate (source is File)",
+		},
+		{
+			name:     "BlobToFile",
+			fromTo:   common.EFromTo.BlobFile(),
+			shouldValidate: true,
+			description: "Blob to File should validate (destination is File)",
+		},
+	}
+
+	for _, tc := range testCases {
+		t.Run(tc.name, func(t *testing.T) {
+			// Create dummy resource strings
+			src := common.ResourceString{Value: "https://source.example.com/path"}
+			dst := common.ResourceString{Value: "https://dest.example.com/path"}
+
+			// For non-File transfers, we can pass nil service clients since validation should be skipped
+			// For File transfers, we would need proper service clients, but we're testing the conditional logic
+			var srcClient, dstClient *common.ServiceClient
+
+			if !tc.shouldValidate {
+				// Test that validation is skipped when no File locations are involved
+				// This should not panic even with nil service clients
+				err := validateProtocolCompatibility(ctx, tc.fromTo, src, dst, srcClient, dstClient)
+				a.NoError(err, "validateProtocolCompatibility should not fail for %s: %s", tc.name, tc.description)
+			} else {
+				// For File transfers, we expect the function to attempt validation
+				// Since we're passing nil service clients, we expect it to fail gracefully
+				// This tests that the conditional logic correctly identifies File transfers
+				err := validateProtocolCompatibility(ctx, tc.fromTo, src, dst, srcClient, dstClient)
+				// We expect an error here because we're passing nil service clients for File transfers
+				// The important thing is that it doesn't panic and attempts validation
+				if tc.fromTo.From().IsFile() || tc.fromTo.To().IsFile() {
+					a.Error(err, "validateProtocolCompatibility should attempt validation for %s and fail with nil clients: %s", tc.name, tc.description)
+				}
+			}
+		})
+	}
+}
+
+func TestValidateProtocolCompatibility_ConditionalLogic(t *testing.T) {
+	a := assert.New(t)
+	ctx := context.Background()
+
+	// Test the specific conditional logic
+	src := common.ResourceString{Value: "https://source.example.com/path"}
+	dst := common.ResourceString{Value: "https://dest.example.com/path"}
+
+	// Test that S3->Blob doesn't call validation (should not panic with nil clients)
+	err := validateProtocolCompatibility(ctx, common.EFromTo.S3Blob(), src, dst, nil, nil)
+	a.NoError(err, "S3->Blob should skip validation and not panic with nil service clients")
+
+	// Test that GCP->Blob doesn't call validation (should not panic with nil clients)  
+	err = validateProtocolCompatibility(ctx, common.EFromTo.GCPBlob(), src, dst, nil, nil)
+	a.NoError(err, "GCP->Blob should skip validation and not panic with nil service clients")
+
+	// Test that Local->Blob doesn't call validation (should not panic with nil clients)
+	err = validateProtocolCompatibility(ctx, common.EFromTo.LocalBlob(), src, dst, nil, nil)
+	a.NoError(err, "Local->Blob should skip validation and not panic with nil service clients")
+}

common/util.go

@@ -223,7 +223,7 @@ func GetServiceClientForLocation(loc Location,
 		return ret, nil
 
 	default:
-		return nil, nil
+		return ret, nil
 	}
 }