first commit

internal/utils/utils.go

@@ -0,0 +1,60 @@
+package utils
+
+import (
+	"net/url"
+	"path/filepath"
+	"regexp"
+	"strings"
+)
+
+func Sanitize(s string) string {
+	return regexp.MustCompile(`[<>:"/\\|?*]`).ReplaceAllString(s, "_")
+}
+
+func SanitizePath(path string) string {
+	parts := strings.Split(path, "/")
+	cleanParts := make([]string, len(parts))
+	for i, part := range parts {
+		cleanParts[i] = Sanitize(part)
+	}
+
+	return filepath.Join(cleanParts...)
+}
+
+func ResolveAction(baseURL, html string) string {
+	match := regexp.MustCompile(`(?i)action="([^"]+)"`).FindStringSubmatch(html)
+	if len(match) < 2 {
+		return baseURL
+	}
+	u, _ := url.Parse(baseURL)
+	ref, _ := url.Parse(match[1])
+	return u.ResolveReference(ref).String()
+}
+
+func ExtractFormFields(html string) url.Values {
+	fields := url.Values{}
+
+	reInput := regexp.MustCompile(`(?si)<input\s+[^>]*>`)
+	matches := reInput.FindAllString(html, -1)
+
+	for _, tag := range matches {
+		nameMatch := regexp.MustCompile(`(?si)name=["']([^"']+)["']`).FindStringSubmatch(tag)
+		if len(nameMatch) < 2 {
+			continue
+		}
+		name := nameMatch[1]
+
+		val := ""
+		valMatch := regexp.MustCompile(`(?si)value=["']([^"']*)["']`).FindStringSubmatch(tag)
+		if len(valMatch) > 1 {
+			val = valMatch[1]
+
+			val = strings.ReplaceAll(val, "&quot;", "\"")
+			val = strings.ReplaceAll(val, "&amp;", "&")
+			val = strings.ReplaceAll(val, "&#39;", "'")
+		}
+
+		fields.Set(name, val)
+	}
+	return fields
+}