I want to use rdpcap to open a traffic capture.
cap = rdpcap("Chall_1.pcapng")
but i receive the following error and I don't know how to solve it.
Traceback (most recent call last):
File "/usr/lib/python3/dist-packages/scapy/utils.py", line 979, in __call__
i.__init__(filename, fdesc, magic)
File "/usr/lib/python3/dist-packages/scapy/utils.py", line 1124, in __init__
RawPcapReader.__init__(self, filename, fdesc, magic)
File "/usr/lib/python3/dist-packages/scapy/utils.py", line 1035, in __init__
raise Scapy_Exception(
scapy.error.Scapy_Exception: Not a pcap capture file (bad magic: b'\n\r\r\n')
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/home/valentin/Desktop/Tema3/ctf1.py", line 29, in <module>
cap = rdpcap("Chall_1.pcapng")
File "/usr/lib/python3/dist-packages/scapy/utils.py", line 950, in rdpcap
with PcapReader(filename) as fdesc:
File "/usr/lib/python3/dist-packages/scapy/utils.py", line 985, in __call__
i.__init__(filename, fdesc, magic)
File "/usr/lib/python3/dist-packages/scapy/utils.py", line 1320, in __init__
RawPcapNgReader.__init__(self, filename, fdesc, magic)
File "/usr/lib/python3/dist-packages/scapy/utils.py", line 1209, in __init__
self.f.read(blocklen - 24)
MemoryError
The problem was that I didn't have enoght RAM on my virtual machine.
I infer from this Scapy pull request that the intent is that rdpcap() be able to open both pcap and pcapng files. If that's not working, then it's presumably a Scapy bug; please report it on the Scapy issue list.
Related
I ma trying to install proTeXt (protext-3.2-031721.zip) in my 64bi-windows laptop, when I am trying to run the setup.exe file I am receiving a warning to check a logfile which contains the following
Traceback (most recent call last):
File "protext-setup.py", line 298, in <module>
File "protext-setup.py", line 97, in __init__
File "wx\_controls.pyc", line 494, in __init__
UnicodeDecodeError: 'ascii' codec can't decode byte 0xe7 in position 4: ordinal not in range(128)
Can anyone give me a hint?
Anna
I am getting the below error while running docker-compose up in windows server 2016.
docker compose version is docker-compose version 1.27.4, build 40524192
enter image description here
Traceback (most recent call last):
File "site-packages\docker\api\client.py", line 205, in _retrieve_server_version
File "site-packages\docker\api\daemon.py", line 181, in version
File "site-packages\docker\utils\decorators.py", line 46, in inner
File "site-packages\docker\api\client.py", line 228, in _get
File "site-packages\requests\sessions.py", line 543, in get
File "site-packages\requests\sessions.py", line 530, in request
File "site-packages\requests\sessions.py", line 643, in send
File "site-packages\requests\adapters.py", line 449, in send
File "site-packages\urllib3\connectionpool.py", line 677, in urlopen
File "site-packages\urllib3\connectionpool.py", line 392, in _make_request
File "http\client.py", line 1244, in request
File "http\client.py", line 1290, in _send_request
File "http\client.py", line 1239, in endheaders
File "http\client.py", line 1026, in _send_output
File "http\client.py", line 966, in send
File "site-packages\docker\transport\npipeconn.py", line 32, in connect
File "site-packages\docker\transport\npipesocket.py", line 23, in wrapped
File "site-packages\docker\transport\npipesocket.py", line 72, in connect
File "site-packages\docker\transport\npipesocket.py", line 59, in connect
pywintypes.error: (2, 'CreateFile', 'The system cannot find the file specified.')
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "docker-compose", line 3, in <module>
File "compose\cli\main.py", line 67, in main
File "compose\cli\main.py", line 123, in perform_command
File "compose\cli\command.py", line 69, in project_from_options
File "compose\cli\command.py", line 132, in get_project
File "compose\cli\docker_client.py", line 43, in get_client
File "compose\cli\docker_client.py", line 170, in docker_client
File "site-packages\docker\api\client.py", line 188, in __init__
File "site-packages\docker\api\client.py", line 213, in _retrieve_server_version
docker.errors.DockerException: Error while fetching server API version: (2, 'CreateFile', 'The system cannot find the file specified.')
[4332] Failed to execute script docker-compose
Thanks in Advance
I just ran into the exact same symptoms. Turns out Docker wasn't running, and starting Docker solved the problem.
Your docker is probably not running on your machine. Just open Docker Desktop on your computer then go the Containers section to see if its running. If it is running, switch it off then go back to your project and run "docker-compose up --build "
I am having issues running the following script for a longer period of time:
I use ampy to execute the script on the ESP:
sudo ampy --port /dev/ttyUSB0 run photoresistor.py
photoresistor.py:
#!/usr/bin/env python3
import machine
import network
from time import sleep
from urllib.urequest import urlopen
import json
wifiap = network.WLAN(network.AP_IF)
wifiap.active(False)
routercon = network.WLAN(network.STA_IF)
routercon.active(True)
routercon.ifconfig(('10.0.0.128','255.255.255.0','10.0.0.138','10.0.0.138'))
routercon.connect('mywifi', '123')
while not routercon.isconnected():
pass
posturl=('http://10.0.0.156:23102/rest/v2/send')
adc = machine.ADC(0)
gc.enable()
while True:
value = adc.read()
if value < 200:
message = {'username': 'test', 'message': value, 'chatid': 'test', 'password': 'test', 'notifyself': 'false'}
r = urlopen(posturl, data=json.dumps(message).encode())
r.close()
gc.collect()
sleep(1)
It works as expected in the beginning but after some time I get the following stacktrace:
Traceback (most recent call last):
File "/usr/local/bin/ampy", line 11, in <module>
sys.exit(cli())
File "/usr/local/lib/python3.6/dist-packages/click/core.py", line 764, in __call__
return self.main(*args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/click/core.py", line 717, in main
rv = self.invoke(ctx)
File "/usr/local/lib/python3.6/dist-packages/click/core.py", line 1137, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/usr/local/lib/python3.6/dist-packages/click/core.py", line 956, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/usr/local/lib/python3.6/dist-packages/click/core.py", line 555, in invoke
return callback(*args, **kwargs)
File "/usr/local/lib/python3.6/dist-packages/ampy/cli.py", line 337, in run
output = board_files.run(local_file, not no_output)
File "/usr/local/lib/python3.6/dist-packages/ampy/files.py", line 303, in run
out = self._pyboard.execfile(filename)
File "/usr/local/lib/python3.6/dist-packages/ampy/pyboard.py", line 273, in execfile
return self.exec_(pyfile)
File "/usr/local/lib/python3.6/dist-packages/ampy/pyboard.py", line 267, in exec_
raise PyboardError('exception', ret, ret_err)
ampy.pyboard.PyboardError: ('exception', b'', b'Traceback (most recent call last):\r\n File "<stdin>", line 28, in <module>\r\n File "urequests.py", line 152, in post\r\n File "urequests.py", line 89, in request\r\nOSError: [Errno 103] ECONNABORTED\r\n')
No idea what to do.
I tried to play around with the garbage collection but it didn't help.
I suspect that the board doesn't clean up sockets properly.
If the board is sending post requests quickly in the loop (every second for 1 minute) and let it sit afterwards for a short period of time it fails quickly with above ECONNABORTED.
If the board sends post requests more slowly (like 2 in a minute) it takes way longer for it to fail. To conclude: I suspect the OS does not properly clean up resources and still has active connections after r.close() or I am overseeing something in the code.
I am not sure what else I can do to make sure these sockets are closed.
EDIT:
I found out it fails on connect (https://github.com/micropython/micropython-lib/blob/master/urllib.urequest/urllib/urequest.py):
line 28:
s.connect(ai[-1])
however routercon.isconnected() returns true:
>>> routercon.isconnected()
True
>>>
How can it be that altough there is a active connection I am unable to send an http post request?
EDIT2:
When this happens sometimes I also can't post to another endpoint e.g. the test server with the same webservice
>>> r = urlopen(posturl, data=json.dumps(message).encode())
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "urllib/urequest.py", line 28, in urlopen
OSError: [Errno 103] ECONNABORTED
>>> r = urlopen("http://10.0.0.8:23102/rest/v2/send", data=json.dumps(message).encode())
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "urllib/urequest.py", line 28, in urlopen
OSError: [Errno 103] ECONNABORTED
>>>
Interestingly a http get to google works:
>>> r = urlopen("http://www.google.com")
>>>
If I let it sit idle for some time http post start to work again.
Could it be that the OS is performing a cleanup in the background?
I faced the same problem. Restarting your api endpoint device will solve the issue.
I export database json doing commands explained here:
http://kiwitcms.org/blog/atodorov/2018/07/30/how-to-backup-docker-volumes-for-kiwi-tcms/
I'm running latest version of Kiwi.
docker exec -it kiwi_web /bin/bash -c '/Kiwi/manage.py sqlflush | /Kiwi/manage.py dbshell'
2.cat database.json | docker exec -i kiwi_web /Kiwi/manage.py loaddata --format json -
and I get this error:
Traceback (most recent call last):
File "/venv/lib/python3.6/site-packages/django/db/models/options.py", line 564, in get_field
return self.fields_map[field_name]
KeyError: 'description'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/venv/lib/python3.6/site-packages/django/core/serializers/json.py", line 69, in Deserializer
yield from PythonDeserializer(objects, **options)
File "/venv/lib/python3.6/site-packages/django/core/serializers/python.py", line 116, in Deserializer
field = Model._meta.get_field(field_name)
File "/venv/lib/python3.6/site-packages/django/db/models/options.py", line 566, in get_field
sh-4.2$ cat database.json | ./manage.py loaddata --format json -
Traceback (most recent call last):
File "/venv/lib/python3.6/site-packages/django/db/models/options.py", line 564, in get_field
return self.fields_map[field_name]
KeyError: 'description'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/venv/lib/python3.6/site-packages/django/core/serializers/json.py", line 69, in Deserializer
yield from PythonDeserializer(objects, **options)
File "/venv/lib/python3.6/site-packages/django/core/serializers/python.py", line 116, in Deserializer
field = Model._meta.get_field(field_name)
File "/venv/lib/python3.6/site-packages/django/db/models/options.py", line 566, in get_field
raise FieldDoesNotExist("%s has no field named '%s'" % (self.object_name, field_name))
django.core.exceptions.FieldDoesNotExist: Classification has no field named 'description'
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "./manage.py", line 12, in <module>
execute_from_command_line(sys.argv)
File "/venv/lib/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
utility.execute()
File "/venv/lib/python3.6/site-packages/django/core/management/__init__.py", line 375, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/venv/lib/python3.6/site-packages/django/core/management/base.py", line 316, in run_from_argv
self.execute(*args, **cmd_options)
File "/venv/lib/python3.6/site-packages/django/core/management/base.py", line 353, in execute
output = self.handle(*args, **options)
File "/venv/lib/python3.6/site-packages/django/core/management/commands/loaddata.py", line 72, in handle
self.loaddata(fixture_labels)
File "/venv/lib/python3.6/site-packages/django/core/management/commands/loaddata.py", line 113, in loaddata
self.load_label(fixture_label)
File "/venv/lib/python3.6/site-packages/django/core/management/commands/loaddata.py", line 168, in load_label
for obj in objects:
File "/venv/lib/python3.6/site-packages/django/core/serializers/json.py", line 73, in Deserializer
raise DeserializationError() from exc
django.core.serializers.base.DeserializationError: Problem installing fixture '-':
In which version of Kiwi TCMS did you make your backup ?
It looks like backup is from an older version because 6.5 ships with migrations that remove Build.description and Classification.description fields!
I am not sure it is technically possible to handle this gracefully. Please file an issue on GitHub so we can investigate in more details and link back to this SO thread.
A work around for you will be to launch not the latest version of Kiwi TCMS but the version in which you made the backup. Then restore your data, upgrade to the latest version, run the migrations which will change DB schema and then backup again.
If you do not keep around your older docker image you will have to build it from source.
I am using Azure to run python notebook using Jupyterhub. After spinning up the VM, I was able to access the notebooks just by using my username and password (just like ssh). However, one day later when I switched to another network (I am not claiming that the network might have been a problem) I am unable to access the link. It gives me The site can't be reached error.
So I tried rerunning the process again, and since then I have been struggling to make it run again. I have searched for similar issues on GitHub, but they aren't helpful either.
After the kill the process using kill pid command, I tried running the jupyterhub through this command:
/anaconda/envs/py35/bin/python /anaconda/envs/py35/bin/jupyterhub-singleuser --port=50387 --notebook-dir="~/notebooks" --config=/etc/jupyterhub/jupyterhub_config.py
And it gives me the error:
JUPYTERHUB_API_TOKEN env is required to run jupyterhub-singleuser. Did you launch it manually?
So I searched through github issues similar to this. I tried generating token manually using:
jupyterhub token username
And I added that token to JUPYTERHUB_API_TOKEN via export JUPYTERHUB_API_TOKEN=token. I also added token:username to c.Authenticator.tokens in jupyterhub_config.py. Now I get this error:
Traceback (most recent call last):
File "/anaconda/envs/py35/lib/python3.5/site-packages/traitlets/traitlets.py", line 528, in get
value = obj._trait_values[self.name]
KeyError: 'oauth_client_id'
During handling of the above exception, another exception occurred:
Traceback (most recent call last):
File "/anaconda/envs/py35/bin/jupyterhub-singleuser", line 6, in <module>
main()
File "/anaconda/envs/py35/lib/python3.5/site-packages/jupyterhub/singleuser.py", line 455, in main
return SingleUserNotebookApp.launch_instance(argv)
File "/anaconda/envs/py35/lib/python3.5/site-packages/jupyter_core/application.py", line 267, in launch_instance
return super(JupyterApp, cls).launch_instance(argv=argv, **kwargs)
File "/anaconda/envs/py35/lib/python3.5/site-packages/traitlets/config/application.py", line 657, in launch_instance
app.initialize(argv)
File "<decorator-gen-7>", line 2, in initialize
File "/anaconda/envs/py35/lib/python3.5/site-packages/traitlets/config/application.py", line 87, in catch_config_error
return method(app, *args, **kwargs)
File "/anaconda/envs/py35/lib/python3.5/site-packages/notebook/notebookapp.py", line 1296, in initialize
self.init_webapp()
File "/anaconda/envs/py35/lib/python3.5/site-packages/jupyterhub/singleuser.py", line 393, in init_webapp
self.init_hub_auth()
File "/anaconda/envs/py35/lib/python3.5/site-packages/jupyterhub/singleuser.py", line 388, in init_hub_auth
if not self.hub_auth.oauth_client_id:
File "/anaconda/envs/py35/lib/python3.5/site-packages/traitlets/traitlets.py", line 556, in __get__
return self.get(obj, cls)
File "/anaconda/envs/py35/lib/python3.5/site-packages/traitlets/traitlets.py", line 535, in get
value = self._validate(obj, dynamic_default())
File "/anaconda/envs/py35/lib/python3.5/site-packages/traitlets/traitlets.py", line 593, in _validate
value = self._cross_validate(obj, value)
File "/anaconda/envs/py35/lib/python3.5/site-packages/traitlets/traitlets.py", line 599, in _cross_validate
value = obj._trait_validators[self.name](obj, proposal)
File "/anaconda/envs/py35/lib/python3.5/site-packages/traitlets/traitlets.py", line 907, in __call__
return self.func(*args, **kwargs)
File "/anaconda/envs/py35/lib/python3.5/site-packages/jupyterhub/services/auth.py", line 439, in _ensure_not_empty
raise ValueError("%s cannot be empty." % proposal.trait.name)
ValueError: oauth_client_id cannot be empty.
I am not sure where I went wrong in this process. Anybody familiar with this issue?
Try running jupyterhub instead of jupyterhub-singleuser
For your specific use case, the command would be as follows:
sudo /anaconda/envs/py35/bin/python /anaconda/envs/py35/bin/jupyterhub --port=50387 --notebook-dir="~/notebooks" --config=/etc/jupyterhub/jupyterhub_config.py
Make sure that jupyterhub is installed (correctly) in the path you mentioned.