Add empty glob error when no files match

internal/seclang/parser.go

@@ -34,7 +34,8 @@ type Parser struct {
 // It will return error if any directive fails to parse
 // or the file does not exist.
 // If the path contains a *, it will be expanded to all
-// files in the directory matching the pattern
+// files in the directory matching the pattern.
+// It will rereturn an error if there are no files matching the pattern.
 func (p *Parser) FromFile(profilePath string) error {
 	originalDir := p.currentDir
 
@@ -45,6 +46,9 @@ func (p *Parser) FromFile(profilePath string) error {
 		if err != nil {
 			return fmt.Errorf("failed to glob: %s", err.Error())
 		}
+		if len(files) == 0 {
+			return fmt.Errorf("empty glob: %s does not match any file", profilePath)
+		}
 	} else {
 		files = append(files, profilePath)
 	}

internal/seclang/parser_test.go

@@ -102,6 +102,11 @@ func TestLoadConfigurationFile(t *testing.T) {
 	if err != nil {
 		t.Errorf("unexpected error: %s", err.Error())
 	}
+
+	err = p.FromFile("./testdata/glob/*.comf")
+	if err == nil {
+		t.Errorf("expected an error as glob does not match any file")
+	}
 }
 
 // Connectors are supporting embedding github.com/corazawaf/coraza-coreruleset to ease CRS integration