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fragattack: do not remove existing monitor interface

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This commit is contained in:
Mathy 2020-03-27 12:50:28 -04:00
parent c6a9274d4d
commit 80f3e334a0
1 changed files with 6 additions and 3 deletions
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9
research/inject.py
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@ -454,11 +454,14 @@ class Daemon():
# 0. Some users may forget this otherwise
subprocess.check_output(["rfkill", "unblock", "wifi"])
# 1. Remove unused virtual interfaces to start from a clean state
subprocess.call(["iw", self.nic_mon, "del"], stdout=subprocess.PIPE, stdin=subprocess.PIPE)
# 1. Only create a new monitor interface if it does not yet exist
try:
scapy.arch.get_if_index(self.nic_mon)
except IOError:
subprocess.call(["iw", self.nic_mon, "del"], stdout=subprocess.PIPE, stdin=subprocess.PIPE)
subprocess.check_output(["iw", self.nic_iface, "interface", "add", self.nic_mon, "type", "monitor"])
# 2. Configure monitor mode on interfaces
subprocess.check_output(["iw", self.nic_iface, "interface", "add", self.nic_mon, "type", "monitor"])
# Some kernels (Debian jessie - 3.16.0-4-amd64) don't properly add the monitor interface. The following ugly
# sequence of commands assures the virtual interface is properly registered as a 802.11 monitor interface.
subprocess.check_output(["iw", self.nic_mon, "set", "type", "monitor"])