feat: complete basic functions

Support http,dns and mysql connection. Support custom http, dns response. Support dns rebinding.
Support mysql load local files and jdbc deserialize exploit.

internal/database/db.go

@@ -0,0 +1,13 @@
+package database
+
+import "gorm.io/gorm"
+
+var DB *gorm.DB
+
+func InitDB(driver, dsn string) (err error) {
+	switch driver {
+	case "sqlite":
+		DB, err = NewSqlite3(dsn)
+	}
+	return
+}

internal/database/json_field.go

@@ -0,0 +1,27 @@
+package database
+
+import (
+	"database/sql/driver"
+	"encoding/json"
+)
+
+type MapField map[string]string
+
+func (f MapField) Value() (driver.Value, error) {
+	return json.Marshal(f)
+}
+
+func (f *MapField) Scan(data interface{}) error {
+	return json.Unmarshal(data.([]byte), f)
+}
+
+
+type ListField []string
+
+func (f ListField) Value() (driver.Value, error) {
+	return json.Marshal(f)
+}
+
+func (f *ListField) Scan(data interface{}) error {
+	return json.Unmarshal(data.([]byte), f)
+}

internal/database/sqlite3.go

@@ -0,0 +1,15 @@
+package database
+
+import (
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
+
+func NewSqlite3(dsn string) (*gorm.DB, error) {
+	db, err := gorm.Open(sqlite.Open(dsn), &gorm.Config{})
+	if err != nil {
+		return nil, err
+	}
+	db.Exec("PRAGMA foreign_keys=ON")
+	return db, nil
+}