Implemented network tasks

providers/ec2/__init__.py

@@ -10,6 +10,7 @@ from tasks import locale
 from tasks import apt
 from tasks import boot
 from tasks import security
+from tasks import network
 
 
 def initialize():
@@ -47,7 +48,10 @@ def tasks(tasklist, manifest):
 	             boot.DisableGetTTYs(),
 	             security.EnableShadowConfig(),
 	             security.DisableSSHPasswordAuthentication(),
-	             security.DisableSSHDNSLookup())
+	             security.DisableSSHDNSLookup(),
+	             network.RemoveDNSInfo(),
+	             network.ConfigureNetworkIF(),
+	             network.ConfigureDHCP())
 
 	from common.tasks import TriggerRollback
 	tasklist.add(TriggerRollback())

providers/ec2/tasks/network.py

@@ -0,0 +1,35 @@
+from base import Task
+from common import phases
+import os.path
+
+
+class RemoveDNSInfo(Task):
+	description = 'Removing resolv.conf'
+	phase = phases.system_modification
+
+	def run(self, info):
+		from os import remove
+		remove(os.path.join(info.root, 'etc/resolv.conf'))
+
+
+class ConfigureNetworkIF(Task):
+	description = 'Configuring network interfaces'
+	phase = phases.system_modification
+
+	def run(self, info):
+		interfaces_path = os.path.join(info.root, 'etc/network/interfaces')
+		if_config = {'squeeze': ('auto lo\niface lo inet loopback\n'
+		                         'auto eth0\niface eth0 inet dhcp'),
+		             'wheezy':  'auto eth0\niface eth0 inet dhcp'}
+		with open(interfaces_path, 'a') as interfaces:
+			interfaces.write(if_config.get(info.manifest.system['release']))
+
+
+class ConfigureDHCP(Task):
+	description = 'Configuring the DHCP client'
+	phase = phases.system_modification
+
+	def run(self, info):
+		from common.tools import sed_i
+		dhcpcd = os.path.join(info.root, 'etc/default/dhcpcd')
+		sed_i(dhcpcd, '^#*SET_DNS=.*', 'SET_DNS=\'yes\'')