pop-ups: generate better rule names

Continuation of previous commit.

Author: gustavo-iniguez-goya

ui/opensnitch/database/__init__.py

@@ -549,3 +549,27 @@ def insert_rule(self, rule, node_addr):
                     rule.action, rule.duration, rule.operator.type,
                     str(rule.operator.sensitive), rule.operator.operand, rule.operator.data),
                 action_on_conflict="IGNORE")
+
+    def rule_exists(self, rule, node_addr):
+        qstr = "SELECT node, name, action, duration, operator_type, operator_operand, operator_data " \
+            " FROM rules WHERE " \
+            "name=? AND " \
+            "node=? AND " \
+            "action=? AND " \
+            "duration=? AND " \
+            "operator_type=? AND " \
+            "operator_operand=? AND " \
+            "operator_data=?"
+        q = QSqlQuery(qstr, self.db)
+        q.prepare(qstr)
+        q.addBindValue(rule.name)
+        q.addBindValue(node_addr)
+        q.addBindValue(rule.action)
+        q.addBindValue(rule.duration)
+        q.addBindValue(rule.operator.type)
+        q.addBindValue(rule.operator.operand)
+        q.addBindValue(rule.operator.data)
+        if not q.exec_() or q.next() == False:
+            return None
+
+        return q

ui/opensnitch/dialogs/prompt.py

@@ -653,7 +653,9 @@ def _send_rule(self):
                 self._rule.operator.type = Config.RULE_TYPE_LIST
                 self._rule.operator.operand = Config.RULE_TYPE_LIST
 
-            self._rule.name = self._rules.new_unique_name(rule_temp_name, self._peer, "")
+            exists = self._rules.exists(self._rule, self._peer)
+            if not exists:
+                self._rule.name = self._rules.new_unique_name(rule_temp_name, self._peer, "")
 
             self.hide()
             if self._ischeckAdvanceded:

ui/opensnitch/rules.py

@@ -101,6 +101,9 @@ def delete(self, name, addr, callback):
     def delete_by_field(self, field, values):
         return self._db.delete_rules_by_field(field, values)
 
+    def exists(self, rule, node_addr):
+        return self._db.rule_exists(rule, node_addr)
+
     def new_unique_name(self, rule_name, node_addr, prefix):
         """generate a new name, if the supplied one already exists
         """