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Adding the channel check to prevent interferences

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This commit is contained in:
Félix Aime 2021-06-08 11:49:53 +02:00
parent 9f75d339da
commit 61de73d989
1 changed files with 355 additions and 337 deletions
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18
server/frontend/app/classes/network.py
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@ -4,6 +4,7 @@
import subprocess as sp
import netifaces as ni
import requests as rq
import re
import sys
import time
import qrcode
@ -214,11 +215,13 @@ class Network(object):
:return: bool - if hostapd configuration file created
"""
try:
chan = self.set_ap_channel()
with open("{}/app/assets/hostapd.conf".format(sys.path[0]), "r") as f:
conf = f.read()
conf = conf.replace("{IFACE}", self.iface_in)
conf = conf.replace("{SSID}", self.AP_SSID)
conf = conf.replace("{PASS}", self.AP_PASS)
conf = conf.replace("{CHAN}", chan)
with open("/tmp/hostapd.conf", "w") as c:
c.write(conf)
return True
@ -335,3 +338,18 @@ class Network(object):
return True
except:
return False
def set_ap_channel(self):
"""
Deduce the channel to have for the AP in order to prevent
kind of jamming between the two wifi interfaces.
"""
# Get the channel of the connected interface
sh = sp.Popen(["iw", self.iface_out, "info"],
stdout=sp.PIPE, stderr=sp.PIPE).communicate()
res = re.search("channel ([0-9]{1,2})", sh[0].decode('utf8'))
chn = res.group(1)
# Return a good candidate.
return "11" if int(chn) < 7 else "1"