From 84957a3418db23716b9e80f38733ed5e0bd4252e Mon Sep 17 00:00:00 2001
From: DmitriyEshenko <snooppy@mail.ua>
Date: Fri, 23 Aug 2019 22:00:57 +0000
Subject: [dummy] T1609 migrate to vyos.interfaceconfig, adding check ip-cidr,
 adding vyos.interfaceconfig common ipv4/ipv6 functions

---
 interface-definitions/interfaces-dummy.xml |  3 ++
 python/vyos/interfaceconfig.py             | 56 ++++++++++++++++++++++++++++++
 src/conf_mode/interface-dummy.py           | 19 +++++-----
 3 files changed, 69 insertions(+), 9 deletions(-)

diff --git a/interface-definitions/interfaces-dummy.xml b/interface-definitions/interfaces-dummy.xml
index 4450b69b7..c9860fe3b 100644
--- a/interface-definitions/interfaces-dummy.xml
+++ b/interface-definitions/interfaces-dummy.xml
@@ -28,6 +28,9 @@
                 <description>IPv6 address and prefix length</description>
               </valueHelp>
               <multi/>
+              <constraint>
+                <validator name="ip-cidr"/>
+              </constraint>
             </properties>
           </leafNode>
           <leafNode name="description">
diff --git a/python/vyos/interfaceconfig.py b/python/vyos/interfaceconfig.py
index 83e7c03c0..56e2d515c 100644
--- a/python/vyos/interfaceconfig.py
+++ b/python/vyos/interfaceconfig.py
@@ -21,6 +21,7 @@ import re
 import json
 import socket
 import subprocess
+import ipaddress
 
 dhclient_conf_dir = r'/var/lib/dhcp/dhclient_'
 
@@ -188,6 +189,29 @@ class Interface:
         self._debug(e)
       return None
 
+  def get_addr(self, ret_prefix=None):
+    """
+        universal: reads all IPs assigned to an interface and returns it in a list,
+        or None if no IP address is assigned to the interface. Also may return
+        in prefix format if set ret_prefix
+    """
+    ips = []
+    try:
+      ret = subprocess.check_output(['ip -j addr show dev ' + self._ifname], stderr=subprocess.STDOUT, shell=True).decode()
+      j = json.loads(ret)
+      for i in j:
+        if len(i) != 0:
+          for addr in i['addr_info']:
+            if ret_prefix:
+              ips.append(addr['local'] + "/" + str(addr['prefixlen']))
+            else:
+              ips.append(addr['local'])
+      return ips
+    except subprocess.CalledProcessError as e:
+      if self._debug():
+        self._debug(e)
+      return None
+
   def get_ipv4_addr(self):
     """
         reads all IPs assigned to an interface and returns it in a list, 
@@ -227,6 +251,38 @@ class Interface:
         self._debug(e)
       return None
 
+  def add_addr(self, ipaddr=[]):
+    """
+        universal: add ipv4/ipv6 addresses on the interface
+    """
+    for ip in ipaddr:
+      proto = '-4'
+      if ipaddress.ip_address(ip.split(r'/')[0]).version == 6:
+        proto = '-6'
+
+      try:
+        ret = subprocess.check_output(['ip ' + proto + ' address add ' + ip + ' dev ' + self._ifname], stderr=subprocess.STDOUT, shell=True).decode()
+      except subprocess.CalledProcessError as e:
+        if self._debug():
+          self._debug(e)
+        return None
+    return True
+
+  def del_addr(self, ipaddr=[]):
+    """
+        universal: delete ipv4/ipv6 addresses on the interface
+    """
+    for ip in ipaddr:
+      proto = '-4'
+      if ipaddress.ip_address(ip.split(r'/')[0]).version == 6:
+        proto = '-6'
+      try:
+        ret = subprocess.check_output(['ip ' + proto + ' address del ' + ip + ' dev ' + self._ifname], stderr=subprocess.STDOUT, shell=True).decode()
+      except subprocess.CalledProcessError as e:
+        if self._debug():
+          self._debug(e)
+        return None
+    return True
 
   def add_ipv4_addr(self, ipaddr=[]):
     """
diff --git a/src/conf_mode/interface-dummy.py b/src/conf_mode/interface-dummy.py
index 8c939ce95..c7c5ac99c 100755
--- a/src/conf_mode/interface-dummy.py
+++ b/src/conf_mode/interface-dummy.py
@@ -20,8 +20,6 @@ import os
 import sys
 import copy
 
-import vyos.configinterface as VyIfconfig
-
 from vyos.interfaceconfig import Interface
 from vyos.config import Config
 from vyos import ConfigError
@@ -86,20 +84,23 @@ def generate(dummy):
 def apply(dummy):
     # Remove dummy interface
     if dummy['deleted']:
-        VyIfconfig.remove_interface(dummy['intf'])
+        Interface(dummy['intf']).remove_interface()
     else:
         # Interface will only be added if it yet does not exist
-        VyIfconfig.add_interface('dummy', dummy['intf'])
+        Interface(dummy['intf'], 'dummy')
 
         # update interface description used e.g. within SNMP
-        VyIfconfig.set_description(dummy['intf'], dummy['description'])
+        if dummy['description']:
+            Interface(dummy['intf']).ifalias =  dummy['description']
 
         # Configure interface address(es)
-        for addr in dummy['address_remove']:
-            VyIfconfig.remove_interface_address(dummy['intf'], addr)
+        if len(dummy['address_remove']) > 0:
+            Interface(dummy['intf']).del_addr(dummy['address_remove'])
 
-        for addr in dummy['address']:
-            VyIfconfig.add_interface_address(dummy['intf'], addr)
+        if len(dummy['address']) > 0:
+            # delete already existing addreses from list
+            addresess = diff(dummy['address'], Interface(dummy['intf']).get_addr(1))
+            Interface(dummy['intf']).add_addr(addresess)
 
         if dummy['disable']:
             Interface(dummy['intf']).linkstate = 'down'
-- 
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