From 928aa3ef114ebf9246c90f9eae80da9a20172530 Mon Sep 17 00:00:00 2001
From: Ludovic Pouzenc <ludovic@pouzenc.fr>
Date: Sun, 15 May 2016 13:05:33 +0200
Subject: Add ip link support to mac local_macs, improove test result
 readability

---
 haircontrol/data.py       |  9 +++++++--
 haircontrol/discovery.py  | 31 +++++++++++++++++++++----------
 haircontrol/inspectors.py | 21 +++++++++++++++++++++
 3 files changed, 49 insertions(+), 12 deletions(-)
 create mode 100644 haircontrol/inspectors.py

(limited to 'haircontrol')

diff --git a/haircontrol/data.py b/haircontrol/data.py
index d8195c7..6f5733d 100644
--- a/haircontrol/data.py
+++ b/haircontrol/data.py
@@ -5,9 +5,12 @@ class EtherDomain:
         self.mac2ip = {}
 
     def __repr__(self):
+        return '([\n%s\n],\n%s\n)'%(',\n'.join('  %s'%repr(e) for e in get_equipment_list_sorted()), repr(self.ip2mac))
+
+    def get_equipment_list_sorted(self):
         e_list = list(self.equipments.values())
         e_list.sort(key=lambda x: x.name)
-        return '([\n%s\n],\n%s\n)'%(',\n'.join('  %s'%repr(e) for e in e_list), repr(self.ip2mac))
+        return e_list
 
     def add_equipment(self,e):
         old = self.equipments.get(e.mgmtip)
@@ -37,6 +40,7 @@ class Equipment:
     def add_seen_mac(self, ifname, mac):
         iface = self.ifaces.get(ifname)
         if not iface:
+            print("Warn : add_seen_mac(%s, %s) auto-create iface on %s"%(ifname, mac, self.name))
             iface = Interface(ifname)
             self.ifaces[ifname] = iface
         iface.mac_seen.append(mac)
@@ -48,5 +52,6 @@ class Interface:
         self.mac_seen = []
 
     def __repr__(self):
-        return repr( ( self.mac, self.name, '[ %i mac_seen ]'%len(self.mac_seen) ) )
+        return repr( ( self.mac, self.name, self.mac_seen ) )
+        #return repr( ( self.mac, self.name, '[ %i mac_seen ]'%len(self.mac_seen) ) )
 
diff --git a/haircontrol/discovery.py b/haircontrol/discovery.py
index 2b7ad83..680eb4c 100644
--- a/haircontrol/discovery.py
+++ b/haircontrol/discovery.py
@@ -4,9 +4,8 @@ import xml.etree.ElementTree
 from haircontrol.data import *
 
 class Discovery:
-    IPNEIGH = re.compile("^(?P<ip>[a-f0-9:.]+) dev (?P<ifname>.*) lladdr (?P<mac>[a-f0-9:]*)")
-    # fe80::8300 dev eth1 lladdr 10:fe:ed:f1:e1:f3 router STALE
-    # 172.16.20.210 dev eth1 lladdr c0:4a:00:fe:1f:87 REACHABLE
+    IPNEIGH = re.compile("(?P<ip>[a-f0-9:.]+) dev (?P<ifname>.*) lladdr (?P<mac>[a-f0-9:]*)")
+    IPLINKSHOW = re.compile("(?P<id>\d+):\s+(?P<ifname>[^:]*):.+\s+(?:link/ether\s+(?P<mac>[a-f0-9:]*)\s+brd|link/none)")
 
     def __init__(self, inspector):
         self.inspector = inspector
@@ -15,18 +14,30 @@ class Discovery:
     def discover_hinting_from_lldp(self, e_lldp):
         self.net.add_equipment(e_lldp)
         self.inspector.connect(e_lldp)
+
+        # Learn local interfaces of e_lldp
+        fd = self.inspector.command('ip-link')
+        for line in fd:
+            matches = Discovery.IPLINKSHOW.match(line)
+            if matches:
+                ifname, mac = [ matches.group(k) for k in ['ifname','mac'] ]
+                e_lldp.ifaces[ifname] = Interface(ifname, mac)
+        fd.close()
+
+        # Create equipments and ifaces from LLDP neighbour discovery
         fd = self.inspector.command('lldp')
         root = xml.etree.ElementTree.parse(fd).getroot()
         for iface in root.iter('interface'):
-            ifname = iface.get('name')
+            local_ifname = iface.get('name')
+            local_mac = e_lldp.ifaces[local_ifname].mac
             chassis = iface.find('chassis')
-            e = Equipment()
-            e.name = chassis.find('name').text
-            e.mgmtip = chassis.find('mgmt-ip').text
+            remote_name = chassis.find('name').text
+            remote_ipmgmt = chassis.find('mgmt-ip').text
+            e = Equipment(remote_name, remote_ipmgmt)
             self.net.add_equipment(e)
             for port in iface.findall('port'):
-                #remote_ifname = port.find('id').text
-                e.add_seen_mac(ifname, 'lldp') #XXX
+                remote_ifname = port.find('id').text
+                e.add_seen_mac(remote_ifname, local_mac)
         fd.close()
         self.inspector.disconnect()
 
@@ -35,7 +46,7 @@ class Discovery:
         self.inspector.connect(e_root)
         fd = self.inspector.command('ip-neigh')
         for line in fd:
-            matches = Discovery.IPNEIGH.search(line)
+            matches = Discovery.IPNEIGH.match(line)
             if matches:
                 ip, ifname, mac = [ matches.group(k) for k in ['ip','ifname','mac'] ]
                 self.net.index_mac_ip(mac, ip)
diff --git a/haircontrol/inspectors.py b/haircontrol/inspectors.py
new file mode 100644
index 0000000..9b797fe
--- /dev/null
+++ b/haircontrol/inspectors.py
@@ -0,0 +1,21 @@
+import re
+
+class Inspector():
+    cmds = {}
+    fd = None
+
+    def parse(self):
+        return None #XXX Implement
+
+class LinuxInspector(Inspector):
+    cmds = {
+            'ip-neigh': {
+                'cmd': 'ip neigh',
+                # fe80::8300 dev eth1 lladdr 10:fe:ed:f1:e1:f3 router STALE
+                # 172.16.20.210 dev eth1 lladdr c0:4a:00:fe:1f:87 REACHABLE
+                'kind': 'text',
+                'fields': ['ip','ifname','mac'],
+                're': re.compile("(?P<ip>[a-f0-9:.]+) dev (?P<ifname>.*) lladdr (?P<mac>[a-f0-9:]*)")
+            }
+    }
+
-- 
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