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Support bridge in cloud

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Nat take advantage of that and the code is more simple.

Fix #761
This commit is contained in:
Julien Duponchelle 2016-11-04 17:32:16 +01:00
parent 1b3e47ce83
commit cf723962af
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GPG Key ID: CE8B29639E07F5E8
5 changed files with 80 additions and 45 deletions
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55
gns3server/compute/builtin/nodes/cloud.py
View File

@ -210,23 +210,11 @@ class Cloud(BaseNode):
raise NodeError("Interface '{}' could not be found on this system".format(port_info["interface"]))
if sys.platform.startswith("linux"):
# use raw sockets on Linux
yield from self._ubridge_send('bridge add_nio_linux_raw {name} "{interface}"'.format(name=bridge_name,
interface=port_info["interface"]))
yield from self._add_linux_ethernet(port_info, bridge_name)
elif sys.platform.startswith("darwin"):
yield from self._add_osx_ethernet(port_info, bridge_name)
else:
if sys.platform.startswith("darwin"):
# Wireless adapters are not well supported by the libpcap on OSX
if (yield from self._is_wifi_adapter_osx(port_info["interface"])):
raise NodeError("Connecting to a Wireless adapter is not supported on Mac OS")
if sys.platform.startswith("darwin") and port_info["interface"].startswith("vmnet"):
# Use a special NIO to connect to VMware vmnet interfaces on OSX (libpcap doesn't support them)
yield from self._ubridge_send('bridge add_nio_fusion_vmnet {name} "{interface}"'.format(name=bridge_name,
interface=port_info["interface"]))
else:
if not gns3server.utils.interfaces.has_netmask(port_info["interface"]):
raise NodeError("Interface {} don't have a netmask".format(port_info["interface"]))
yield from self._ubridge_send('bridge add_nio_ethernet {name} "{interface}"'.format(name=bridge_name,
interface=port_info["interface"]))
yield from self._add_windows_ethernet(port_info, bridge_name)
elif port_info["type"] == "tap":
yield from self._ubridge_send('bridge add_nio_tap {name} "{interface}"'.format(name=bridge_name, interface=port_info["interface"]))
@ -243,6 +231,41 @@ class Cloud(BaseNode):
yield from self._ubridge_send('bridge start {name}'.format(name=bridge_name))
@asyncio.coroutine
def _add_linux_ethernet(self, port_info, bridge_name):
"""
Use raw sockets on Linux.
If interface is a bridge we connect a tap to it
"""
interface = port_info["interface"]
if gns3server.utils.interfaces.is_interface_bridge(interface):
tap = "gns3tap{}-{}".format(Cloud._cloud_id, port_info["port_number"])
yield from self._ubridge_send('bridge add_nio_tap "{name}" "{interface}"'.format(name=bridge_name, interface=tap))
yield from self._ubridge_send('brctl addif "{interface}" "{tap}"'.format(tap=tap, interface=interface))
else:
yield from self._ubridge_send('bridge add_nio_linux_raw {name} "{interface}"'.format(name=bridge_name, interface=interface))
@asyncio.coroutine
def _add_osx_ethernet(self, port_info, bridge_name):
# Wireless adapters are not well supported by the libpcap on OSX
if (yield from self._is_wifi_adapter_osx(port_info["interface"])):
raise NodeError("Connecting to a Wireless adapter is not supported on Mac OS")
if port_info["interface"].startswith("vmnet"):
# Use a special NIO to connect to VMware vmnet interfaces on OSX (libpcap doesn't support them)
yield from self._ubridge_send('bridge add_nio_fusion_vmnet {name} "{interface}"'.format(name=bridge_name,
interface=port_info["interface"]))
return
if not gns3server.utils.interfaces.has_netmask(port_info["interface"]):
raise NodeError("Interface {} don't have a netmask".format(port_info["interface"]))
yield from self._ubridge_send('bridge add_nio_ethernet {name} "{interface}"'.format(name=bridge_name, interface=port_info["interface"]))
@asyncio.coroutine
def _add_windows_ethernet(self, port_info, bridge_name):
if not gns3server.utils.interfaces.has_netmask(port_info["interface"]):
raise NodeError("Interface {} don't have a netmask".format(port_info["interface"]))
yield from self._ubridge_send('bridge add_nio_ethernet {name} "{interface}"'.format(name=bridge_name, interface=port_info["interface"]))
@asyncio.coroutine
def add_nio(self, nio, port_number):
"""

13
gns3server/compute/builtin/nodes/nat.py
View File

@ -29,19 +29,15 @@ class Nat(Cloud):
nat access to the outside
"""
_nat_id = 0
def __init__(self, *args, **kwargs):
if "virbr0" not in [interface["name"] for interface in gns3server.utils.interfaces.interfaces()]:
raise NodeError("virbr0 is missing. You need to install libvirt")
self._interface = "gns3nat{}".format(Nat._nat_id)
Nat._nat_id += 1
ports = [
{
"name": "nat0",
"type": "tap",
"interface": self._interface,
"type": "ethernet",
"interface": "virbr0",
"port_number": 0
}
]
@ -56,11 +52,6 @@ class Nat(Cloud):
# It's not allowed to change it
pass
@asyncio.coroutine
def add_nio(self, nio, port_number):
yield from super().add_nio(nio, port_number)
yield from self._ubridge_send('brctl addif virbr0 "{interface}"'.format(interface=self._interface))
@classmethod
def is_supported(self):
return sys.platform.startswith("linux")

8
gns3server/utils/interfaces.py
View File

@ -16,6 +16,7 @@
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
import sys
import aiohttp
import socket
@ -163,6 +164,13 @@ def is_interface_up(interface):
return True
def is_interface_bridge(interface):
"""
:returns: True if interface is a bridge
"""
return os.path.exists(os.path.join("/sys/class/net/", interface, "bridge"))
def _check_windows_service(service_name):
import pywintypes

29
tests/compute/builtin/nodes/test_cloud.py
View File

@ -152,3 +152,32 @@ def test_linux_ethernet_raw_add_nio(linux_platform, project, async_run, nio):
call("bridge add_nio_linux_raw {}-0 \"eth0\"".format(cloud._id)),
call("bridge start {}-0".format(cloud._id)),
])
def test_linux_ethernet_raw_add_nio_bridge(linux_platform, project, async_run, nio):
"""
Bridge can't be connected directly to a cloud we use a tap in the middle
"""
ports = [
{
"interface": "bridge0",
"name": "bridge0",
"port_number": 0,
"type": "ethernet"
}
]
cloud = Cloud("cloud1", str(uuid.uuid4()), project, MagicMock(), ports=ports)
with asyncio_patch("gns3server.compute.builtin.nodes.cloud.Cloud._ubridge_send") as ubridge_mock:
with patch("gns3server.compute.builtin.nodes.cloud.Cloud._interfaces", return_value=[{"name": "bridge0"}]):
with patch("gns3server.utils.interfaces.is_interface_bridge", return_value=True):
async_run(cloud.add_nio(nio, 0))
tap = "gns3tap{}-0".format(cloud._cloud_id)
ubridge_mock.assert_has_calls([
call("bridge create {}-0".format(cloud._id)),
call("bridge add_nio_udp {}-0 4242 127.0.0.1 4343".format(cloud._id)),
call("bridge add_nio_tap \"{}-0\" \"{}\"".format(cloud._id, tap)),
call("brctl addif \"bridge0\" \"{}\"".format(tap)),
call("bridge start {}-0".format(cloud._id)),
])

20
tests/compute/builtin/nodes/test_nat.py
View File

@ -24,12 +24,6 @@ from gns3server.compute.builtin.nodes.nat import Nat
from gns3server.compute.vpcs import VPCS
def test_init(on_gns3vm, project):
nat1 = Nat("nat1", str(uuid.uuid4()), project, MagicMock())
nat2 = Nat("nat2", str(uuid.uuid4()), project, MagicMock())
assert nat1.ports_mapping[0]["interface"] != nat2.ports_mapping[0]["interface"]
def test_json(on_gns3vm, project):
nat = Nat("nat1", str(uuid.uuid4()), project, MagicMock())
assert nat.__json__() == {
@ -39,20 +33,10 @@ def test_json(on_gns3vm, project):
"status": "started",
"ports_mapping": [
{
"interface": nat._interface,
"interface": "virbr0",
"name": "nat0",
"port_number": 0,
"type": "tap"
"type": "ethernet"
}
]
}
def test_add_nio(on_gns3vm, project, async_run):
nio = VPCS.instance().create_nio({"type": "nio_udp", "lport": 4242, "rport": 4243, "rhost": "127.0.0.1"})
nat = Nat("nat1", str(uuid.uuid4()), project, MagicMock())
with asyncio_patch("gns3server.compute.builtin.nodes.cloud.Cloud.add_nio") as cloud_add_nio_mock:
with asyncio_patch("gns3server.compute.base_node.BaseNode._ubridge_send") as nat_ubridge_send_mock:
async_run(nat.add_nio(0, nio))
assert cloud_add_nio_mock.called
nat_ubridge_send_mock.assert_called_with("brctl addif virbr0 \"{}\"".format(nat._interface))