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https://github.com/GNS3/gns3-server
synced 2024-11-28 03:08:14 +00:00
New feature: packet capture for IOS routers.
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grossmj
parent
14bb12d3fb
commit
606f773f3d
@ -56,6 +56,8 @@ from ..schemas.vm import VM_STOP_SCHEMA
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from ..schemas.vm import VM_SUSPEND_SCHEMA
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from ..schemas.vm import VM_RELOAD_SCHEMA
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from ..schemas.vm import VM_UPDATE_SCHEMA
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from ..schemas.vm import VM_START_CAPTURE_SCHEMA
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from ..schemas.vm import VM_STOP_CAPTURE_SCHEMA
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from ..schemas.vm import VM_SAVE_CONFIG_SCHEMA
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from ..schemas.vm import VM_IDLEPCS_SCHEMA
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from ..schemas.vm import VM_ALLOCATE_UDP_PORT_SCHEMA
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@ -484,6 +486,90 @@ class VM(object):
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self.send_response(response)
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@IModule.route("dynamips.vm.start_capture")
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def vm_start_capture(self, request):
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"""
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Starts a packet capture.
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Mandatory request parameters:
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- id (vm identifier)
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- port_id (port identifier)
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- slot (slot number)
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- port (port number)
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- capture_file_name
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Optional request parameters:
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- data_link_type (PCAP DLT_* value)
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Response parameters:
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- port_id (port identifier)
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- capture_file_path (path to the capture file)
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:param request: JSON request
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"""
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# validate the request
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if not self.validate_request(request, VM_START_CAPTURE_SCHEMA):
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return
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# get the router instance
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router = self.get_device_instance(request["id"], self._routers)
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if not router:
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return
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slot = request["slot"]
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port = request["port"]
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capture_file_name = request["capture_file_name"]
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data_link_type = request.get("data_link_type")
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try:
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capture_file_path = os.path.join(router.hypervisor.working_dir, "captures", capture_file_name)
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router.start_capture(slot, port, capture_file_path, data_link_type)
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except DynamipsError as e:
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self.send_custom_error(str(e))
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return
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response = {"port_id": request["port_id"],
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"capture_file_path": capture_file_path}
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self.send_response(response)
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@IModule.route("dynamips.vm.stop_capture")
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def vm_stop_capture(self, request):
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"""
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Stops a packet capture.
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Mandatory request parameters:
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- id (vm identifier)
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- port_id (port identifier)
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- slot (slot number)
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- port (port number)
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Response parameters:
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- port_id (port identifier)
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:param request: JSON request
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"""
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# validate the request
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if not self.validate_request(request, VM_STOP_CAPTURE_SCHEMA):
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return
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# get the router instance
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router = self.get_device_instance(request["id"], self._routers)
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if not router:
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return
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slot = request["slot"]
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port = request["port"]
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try:
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router.stop_capture(slot, port)
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except DynamipsError as e:
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self.send_custom_error(str(e))
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return
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response = {"port_id": request["port_id"]}
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self.send_response(response)
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@IModule.route("dynamips.vm.save_config")
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def vm_save_config(self, request):
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"""
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@ -57,6 +57,8 @@ class NIO(object):
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Deletes this NIO.
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"""
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if self._input_filter or self._output_filter:
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self.unbind_filter("both")
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self._hypervisor.send("nio delete {}".format(self._name))
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log.info("NIO {name} has been deleted".format(name=self._name))
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@ -134,7 +136,7 @@ class NIO(object):
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def setup_filter(self, direction, options):
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"""
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Setups a packet filter binded with this NIO.
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Setups a packet filter bound with this NIO.
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Filter "freq_drop" has 1 argument "<frequency>". It will drop
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everything with a -1 frequency, drop every Nth packet with a
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@ -1539,6 +1539,71 @@ class Router(object):
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slot_id=slot_id,
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port_id=port_id))
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def start_capture(self, slot_id, port_id, output_file, data_link_type="DLT_EN10MB"):
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"""
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Starts a packet capture.
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:param slot_id: slot ID
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:param port_id: port ID
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:param output_file: PCAP destination file for the capture
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:param data_link_type: PCAP data link type (DLT_*), default is DLT_EN10MB
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"""
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try:
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adapter = self._slots[slot_id]
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except IndexError:
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raise DynamipsError("Slot {slot_id} doesn't exist on router {name}".format(name=self._name,
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slot_id=slot_id))
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if not adapter.port_exists(port_id):
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raise DynamipsError("Port {port_id} doesn't exist in adapter {adapter}".format(adapter=adapter,
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port_id=port_id))
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data_link_type = data_link_type.lower()
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if data_link_type.startswith("dlt_"):
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data_link_type = data_link_type[4:]
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nio = adapter.get_nio(port_id)
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if nio.input_filter[0] is not None and nio.output_filter[0] is not None:
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raise DynamipsError("Port {port_id} has already a filter applied on {adapter}".format(adapter=adapter,
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port_id=port_id))
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try:
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os.makedirs(os.path.dirname(output_file))
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except FileExistsError:
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pass
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except OSError as e:
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raise DynamipsError("Could not create captures directory {}".format(e))
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nio.bind_filter("both", "capture")
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nio.setup_filter("both", "{} {}".format(data_link_type, output_file))
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log.info("router {name} [id={id}]: capturing on port {slot_id}/{port_id}".format(name=self._name,
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id=self._id,
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nio_name=nio.name,
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slot_id=slot_id,
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port_id=port_id))
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def stop_capture(self, slot_id, port_id):
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"""
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Stops a packet capture.
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:param slot_id: slot ID
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:param port_id: port ID
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"""
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try:
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adapter = self._slots[slot_id]
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except IndexError:
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raise DynamipsError("Slot {slot_id} doesn't exist on router {name}".format(name=self._name,
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slot_id=slot_id))
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if not adapter.port_exists(port_id):
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raise DynamipsError("Port {port_id} doesn't exist in adapter {adapter}".format(adapter=adapter,
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port_id=port_id))
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nio = adapter.get_nio(port_id)
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nio.unbind_filter("both")
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def _create_slots(self, numslots):
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"""
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Creates the appropriate number of slots for this router.
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@ -372,6 +372,76 @@ VM_UPDATE_SCHEMA = {
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"required": ["id"]
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}
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VM_START_CAPTURE_SCHEMA = {
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"$schema": "http://json-schema.org/draft-04/schema#",
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"description": "Request validation to start a packet capture on a VM instance port",
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"type": "object",
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"properties": {
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"id": {
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"description": "VM instance ID",
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"type": "integer"
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},
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"port_id": {
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"description": "Unique port identifier for the VM instance",
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"type": "integer"
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},
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"slot": {
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"description": "Slot number",
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"type": "integer",
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"minimum": 0,
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"maximum": 6
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},
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"port": {
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"description": "Port number",
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"type": "integer",
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"minimum": 0,
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"maximum": 49 # maximum is 16 for regular port numbers, WICs port numbers start at 16, 32 or 48
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},
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"capture_file_name": {
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"description": "Capture file name",
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"type": "string",
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"minLength": 1,
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},
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"data_link_type": {
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"description": "PCAP data link type",
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"type": "string",
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"minLength": 1,
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},
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},
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"additionalProperties": False,
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"required": ["id", "port_id", "slot", "port", "capture_file_name"]
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}
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VM_STOP_CAPTURE_SCHEMA = {
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"$schema": "http://json-schema.org/draft-04/schema#",
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"description": "Request validation to stop a packet capture on a VM instance port",
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"type": "object",
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"properties": {
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"id": {
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"description": "VM instance ID",
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"type": "integer"
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},
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"port_id": {
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"description": "Unique port identifier for the VM instance",
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"type": "integer"
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},
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"slot": {
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"description": "Slot number",
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"type": "integer",
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"minimum": 0,
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"maximum": 6
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},
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"port": {
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"description": "Port number",
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"type": "integer",
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"minimum": 0,
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"maximum": 49 # maximum is 16 for regular port numbers, WICs port numbers start at 16, 32 or 48
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},
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},
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"additionalProperties": False,
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"required": ["id", "port_id", "slot", "port"]
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}
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VM_SAVE_CONFIG_SCHEMA = {
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"$schema": "http://json-schema.org/draft-04/schema#",
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"description": "Request validation to save the configs for VM instance",
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@ -23,5 +23,5 @@
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# or negative for a release candidate or beta (after the base version
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# number has been incremented)
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__version__ = "1.0a7.dev2"
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__version__ = "1.0a7.dev3"
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__version_info__ = (1, 0, 0, -99)
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