142 lines
4.0 KiB
Python
142 lines
4.0 KiB
Python
import json
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import hashlib
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import logging
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from dmidecode import DMIParse
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from json_repair import repair_json
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from evidence.models import Annotation
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from evidence.xapian import index
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from utils.constants import CHASSIS_DH
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logger = logging.getLogger('django')
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def get_network_cards(child, nets):
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if child['id'] == 'network' and "PCI:" in child.get("businfo"):
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nets.append(child)
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if child.get('children'):
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[get_network_cards(x, nets) for x in child['children']]
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def get_mac(lshw):
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nets = []
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try:
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if type(lshw) is dict:
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hw = lshw
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else:
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hw = json.loads(lshw)
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except json.decoder.JSONDecodeError:
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hw = json.loads(repair_json(lshw))
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try:
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get_network_cards(hw, nets)
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except Exception as ss:
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logger.warning("%s", ss)
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return
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nets_sorted = sorted(nets, key=lambda x: x['businfo'])
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# This funcion get the network card integrated in motherboard
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# integrate = [x for x in nets if "pci@0000:00:" in x.get('businfo', '')]
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if nets_sorted:
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return nets_sorted[0]['serial']
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class Build:
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def __init__(self, evidence_json, user, check=False):
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self.json = evidence_json
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self.uuid = self.json['uuid']
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self.user = user
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self.hid = None
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self.generate_chids()
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if check:
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return
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self.index()
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self.create_annotations()
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def index(self):
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snap = json.dumps(self.json)
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index(self.user.institution, self.uuid, snap)
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def generate_chids(self):
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self.algorithms = {
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'hidalgo1': self.get_hid_14(),
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}
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def get_hid_14(self):
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if self.json.get("software") == "workbench-script":
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hid = self.get_hid(self.json)
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else:
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device = self.json['device']
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manufacturer = device.get("manufacturer", '')
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model = device.get("model", '')
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chassis = device.get("chassis", '')
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serial_number = device.get("serialNumber", '')
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sku = device.get("sku", '')
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hid = f"{manufacturer}{model}{chassis}{serial_number}{sku}"
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return hashlib.sha3_256(hid.encode()).hexdigest()
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def create_annotations(self):
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annotation = Annotation.objects.filter(
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uuid=self.uuid,
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owner=self.user.institution,
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type=Annotation.Type.SYSTEM,
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)
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if annotation:
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txt = "Warning: Snapshot %s already registered (annotation exists)"
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logger.warning(txt, self.uuid)
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return
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for k, v in self.algorithms.items():
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Annotation.objects.create(
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uuid=self.uuid,
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owner=self.user.institution,
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user=self.user,
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type=Annotation.Type.SYSTEM,
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key=k,
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value=v
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)
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def get_chassis_dh(self):
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chassis = self.get_chassis()
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lower_type = chassis.lower()
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for k, v in CHASSIS_DH.items():
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if lower_type in v:
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return k
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return self.default
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def get_sku(self):
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return self.dmi.get("System")[0].get("SKU Number", "n/a").strip()
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def get_chassis(self):
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return self.dmi.get("Chassis")[0].get("Type", '_virtual')
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def get_hid(self, snapshot):
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dmidecode_raw = snapshot["data"]["dmidecode"]
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self.dmi = DMIParse(dmidecode_raw)
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manufacturer = self.dmi.manufacturer().strip()
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model = self.dmi.model().strip()
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chassis = self.get_chassis_dh()
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serial_number = self.dmi.serial_number()
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sku = self.get_sku()
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if not snapshot["data"].get('lshw'):
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return f"{manufacturer}{model}{chassis}{serial_number}{sku}"
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lshw = snapshot["data"]["lshw"]
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# mac = get_mac2(hwinfo_raw) or ""
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mac = get_mac(lshw) or ""
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if not mac:
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txt = "Could not retrieve MAC address in snapshot %s"
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logger.warning(txt, snapshot['uuid'])
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return f"{manufacturer}{model}{chassis}{serial_number}{sku}{mac}"
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