Move profile fingerprints to separate package

profile/fingerprint/identifier_linux.go

@@ -0,0 +1,47 @@
+package profile
+
+import (
+	"path/filepath"
+	"strings"
+
+	"github.com/safing/portbase/utils"
+)
+
+// GetPathIdentifier returns the identifier from the given path
+func GetPathIdentifier(path string) string {
+	// clean path
+	// TODO: is this necessary?
+	cleanedPath, err := filepath.EvalSymlinks(path)
+	if err == nil {
+		path = cleanedPath
+	} else {
+		path = filepath.Clean(path)
+	}
+
+	splittedPath := strings.Split(path, "/")
+
+	// strip sensitive data
+	switch {
+	case strings.HasPrefix(path, "/home/"):
+		splittedPath = splittedPath[3:]
+	case strings.HasPrefix(path, "/root/"):
+		splittedPath = splittedPath[2:]
+	}
+
+	// common directories with executable
+	if i := utils.IndexOfString(splittedPath, "bin"); i > 0 {
+		splittedPath = splittedPath[i:]
+		return strings.Join(splittedPath, "/")
+	}
+	if i := utils.IndexOfString(splittedPath, "sbin"); i > 0 {
+		splittedPath = splittedPath[i:]
+		return strings.Join(splittedPath, "/")
+	}
+
+	// shorten to max 3
+	if len(splittedPath) > 3 {
+		splittedPath = splittedPath[len(splittedPath)-3:]
+	}
+
+	return strings.Join(splittedPath, "/")
+}