Adding support for ignore file path override if custom config file is used (#1441)

* Adding support for ignore file path override if custom config file is used

v2/cmd/nuclei/main.go

@@ -10,6 +10,7 @@ import (
 	"github.com/projectdiscovery/goflags"
 	"github.com/projectdiscovery/gologger"
 	"github.com/projectdiscovery/nuclei/v2/internal/runner"
+	"github.com/projectdiscovery/nuclei/v2/pkg/catalog/config"
 	"github.com/projectdiscovery/nuclei/v2/pkg/model/types/severity"
 	templateTypes "github.com/projectdiscovery/nuclei/v2/pkg/templates/types"
 	"github.com/projectdiscovery/nuclei/v2/pkg/types"
@@ -203,6 +204,10 @@ on extensive configurability, massive extensibility and ease of use.`)
 		if err := flagSet.MergeConfigFile(cfgFile); err != nil {
 			gologger.Fatal().Msgf("Could not read config: %s\n", err)
 		}
+		cfgFileFolder := filepath.Dir(cfgFile)
+		if err := config.OverrideIgnoreFilePath(cfgFileFolder); err != nil {
+			gologger.Warning().Msgf("Could not read ignore file from custom path: %s\n", err)
+		}
 	}
 }
 

v2/pkg/catalog/config/config.go

@@ -8,6 +8,7 @@ import (
 	"github.com/pkg/errors"
 	"gopkg.in/yaml.v2"
 
+	"github.com/projectdiscovery/fileutil"
 	"github.com/projectdiscovery/gologger"
 )
 
@@ -105,10 +106,38 @@ func ReadIgnoreFile() IgnoreFile {
 	return ignore
 }
 
+var (
+	// customIgnoreFilePath contains a custom path for the ignore file
+	customIgnoreFilePath string
+	// ErrCustomIgnoreFilePathNotExist is raised when the ignore file doesn't exist in the custom path
+	ErrCustomIgnoreFilePathNotExist = errors.New("Ignore file doesn't exist in custom path")
+	// ErrCustomFolderNotExist is raised when the custom ignore folder doesn't exist
+	ErrCustomFolderNotExist = errors.New("The custom ignore path doesn't exist")
+)
+
+// OverrideIgnoreFilePath with a custom existing folder
+func OverrideIgnoreFilePath(customPath string) error {
+	// custom path does not exist
+	if !fileutil.FolderExists(customPath) {
+		return ErrCustomFolderNotExist
+	}
+	// ignore file within the custom path does not exist
+	if !fileutil.FileExists(filepath.Join(customPath, nucleiIgnoreFile)) {
+		return ErrCustomIgnoreFilePathNotExist
+	}
+	customIgnoreFilePath = customPath
+	return nil
+}
+
 // getIgnoreFilePath returns the ignore file path for the runner
 func getIgnoreFilePath() string {
 	var defIgnoreFilePath string
 
+	if customIgnoreFilePath != "" {
+		defIgnoreFilePath = filepath.Join(customIgnoreFilePath, nucleiIgnoreFile)
+		return defIgnoreFilePath
+	}
+
 	home, err := os.UserHomeDir()
 	if err == nil {
 		configDir := filepath.Join(home, ".config", "nuclei")