mirror of
https://github.com/uhi22/pyPLC.git
synced 2024-11-20 01:13:58 +00:00
fix: use ip addr on linux to find out MAC and IPv6 address
This commit is contained in:
uhi22
parent
0980ced46b
commit
97ec82cef5
2 changed files with 89 additions and 43 deletions
|
|
@ -6,6 +6,7 @@
|
|||
#
|
||||
import subprocess
|
||||
import os
|
||||
import sys
|
||||
from helpers import * # prettyMac etc
|
||||
|
||||
MAC_LAPTOP = [0xdc, 0x0e, 0xa1, 0x11, 0x67, 0x08 ] # Win10 laptop
|
||||
|
|
@ -34,6 +35,12 @@ class addressManager():
|
|||
# On windows we can use command line tool "ipconfig".
|
||||
# The link-local addresses always start with fe80::, so we just parse the output of ipconfig line-by-line.
|
||||
# If we have multiple interfaces (e.g. ethernet and WLAN), it will find multiple link-local-addresses.
|
||||
#
|
||||
# On Linux, we use "ip addr". From its output we can directly see the ethernet IPv6 and MAC, even if
|
||||
# there are multiple other interfaces (e.g. WLAN). Pitfall: As long as there is nothing connected to the
|
||||
# ethernet, the Raspberry will not tell a link-local IPv6 in the command "ip addr". This means, we must
|
||||
# make sure that the modem is connected and powered, when the script is starting.
|
||||
ba = bytearray(6)
|
||||
foundAddresses = []
|
||||
if os.name == 'nt':
|
||||
# on Windows
|
||||
|
|
@ -49,6 +56,8 @@ class addressManager():
|
|||
foundAddresses.append(line[k+1:])
|
||||
else:
|
||||
# on Raspberry
|
||||
cfg_useOldStyleIfconfig = 0
|
||||
if (cfg_useOldStyleIfconfig!=0):
|
||||
result = subprocess.run(["ifconfig"], capture_output=True, text=True)
|
||||
if (len(result.stderr)>0):
|
||||
print(result.stderr)
|
||||
|
|
@ -63,6 +72,61 @@ class addressManager():
|
|||
sIp = sIpWithText[0:x]
|
||||
# print("[addressManager] IP=>" + sIp + "<")
|
||||
foundAddresses.append(sIp)
|
||||
else: # instead of the deprecated ifconfig, use "ip addr"
|
||||
result = subprocess.run(["ip", "addr"], capture_output=True, text=True)
|
||||
if (len(result.stderr)>0):
|
||||
print(result.stderr)
|
||||
else:
|
||||
blInTheEthernetChapter = 0
|
||||
lines = result.stdout.split("\n")
|
||||
for line in lines:
|
||||
# print(line);
|
||||
if (line[0:1]!=" "): # if the line does not start with a blank, then it is a heading, e.g.
|
||||
# 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
|
||||
# 3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
|
||||
# print("This is a heading")
|
||||
if (line.find(": eth")>0):
|
||||
# print("This is the heading for the ethernet.")
|
||||
blInTheEthernetChapter = 1 # we are in the ethernet chapter
|
||||
else:
|
||||
blInTheEthernetChapter = 0 # we are not in the ethernet chapter
|
||||
else:
|
||||
# The line started with a blank. This means, it is no heading.
|
||||
# In the best case, we find here something like
|
||||
# inet6 fe80::181f:efdf:97e5:2191/64 scope link
|
||||
if ((blInTheEthernetChapter==1) and (line.find(" inet6")>0) and (line.find(" scope link")>0)):
|
||||
k = line.find(" fe80::") # the beginning of the IPv6
|
||||
if (k>0):
|
||||
sIpWithText = line[k+1:]
|
||||
x = sIpWithText.find(" ") # the space is the end of the IPv6
|
||||
sIp = sIpWithText[0:x]
|
||||
x = sIp.find("/") # remove the /64 at the end
|
||||
if (x>0):
|
||||
sIp = sIp[0:x]
|
||||
# print("[addressManager] IP=>" + sIp + "<")
|
||||
foundAddresses.append(sIp)
|
||||
|
||||
# Also the ethernet MAC is visible here, something like
|
||||
# link/ether b8:27:eb:27:33:53 brd ff:ff:ff:ff:ff:ff
|
||||
if ((blInTheEthernetChapter==1) and (line.find(" link/ether")>0)):
|
||||
# print(line)
|
||||
k = line.find("link/ether ")
|
||||
# print(k)
|
||||
strMac = line[k+11:k+28]
|
||||
# e.g. "b8:27:eb:12:34:56"
|
||||
# print(strMac)
|
||||
# Remove all ":"
|
||||
strMac = strMac.replace(":", "")
|
||||
# print(strMac)
|
||||
if (len(strMac)!=12):
|
||||
print("[addressManager] ERROR: invalid length of MAC string. Expected be 6 bytes, means 12 hex characters. Found " + str(len(strMac)))
|
||||
else:
|
||||
for i in range(0, 6):
|
||||
sTwoChar = strMac[2*i : 2*i+2]
|
||||
ba[i] = int(sTwoChar, 16)
|
||||
self.localMac = ba
|
||||
print("[addressManager] we have local MAC " + prettyMac(self.localMac) + ".")
|
||||
|
||||
|
||||
print("[addressManager] Found " + str(len(foundAddresses)) + " link-local IPv6 addresses.")
|
||||
for a in foundAddresses:
|
||||
|
|
@ -71,6 +135,10 @@ class addressManager():
|
|||
if (len(self.localIpv6Addresses)==0):
|
||||
print("[addressManager] Error: No local Ipv6 address was found.")
|
||||
self.localIpv6Address = "localhost"
|
||||
cfg_exitIfNoLocalLinkAddressIsFound = 1
|
||||
if (cfg_exitIfNoLocalLinkAddressIsFound!=0):
|
||||
print("Exiting, because it does not make sense to continue without IPv6 address");
|
||||
sys.exit(1);
|
||||
else:
|
||||
# at least one address was found. Take the first one (this may be the wrong adaptor).
|
||||
self.localIpv6Address = self.localIpv6Addresses[0]
|
||||
|
|
@ -89,31 +157,8 @@ class addressManager():
|
|||
print("[addressManager] we have local MAC " + prettyMac(self.localMac) + ". Todo: find this out dynamically.")
|
||||
else:
|
||||
# on raspberry
|
||||
# We use "ifconfig", and search for the line which says "ether <mac> ..."
|
||||
result = subprocess.run(["ifconfig"], capture_output=True, text=True)
|
||||
if (len(result.stderr)>0):
|
||||
print(result.stderr)
|
||||
else:
|
||||
lines = result.stdout.split("\n")
|
||||
for line in lines:
|
||||
if (line.find(" ether ")>0) and (line.find("(Ethernet)")>0):
|
||||
# print(line)
|
||||
k = line.find(" ether ")
|
||||
# print(k)
|
||||
strMac = line[k+7:k+24]
|
||||
# e.g. "b8:27:eb:12:34:56"
|
||||
# print(strMac)
|
||||
# Remove all ":"
|
||||
strMac = strMac.replace(":", "")
|
||||
#print(strMac)
|
||||
if (len(strMac)!=12):
|
||||
print("[addressManager] ERROR: invalid length of MAC string. Expected be 6 bytes, means 12 hex characters. Found " + str(len(strMac)))
|
||||
else:
|
||||
for i in range(0, 6):
|
||||
sTwoChar = strMac[2*i : 2*i+2]
|
||||
ba[i] = int(sTwoChar, 16)
|
||||
self.localMac = ba
|
||||
print("[addressManager] we have local MAC " + prettyMac(self.localMac) + ".")
|
||||
# nothing to do here. The MAC address is found together with the IPv6 address above.
|
||||
pass
|
||||
|
||||
def setPevMac(self, pevMac):
|
||||
# During the SLAC, the MAC of the PEV was found out. Store it, maybe we need it later.
|
||||
|
|
|
|||
|
|
@ -23,7 +23,6 @@ class pyPlcWorker():
|
|||
self.mode = mode
|
||||
self.strUserAction = ""
|
||||
self.addressManager = addressManager.addressManager()
|
||||
self.addressManager.findLinkLocalIpv6Address()
|
||||
self.callbackAddToTrace = callbackAddToTrace
|
||||
self.callbackShowStatus = callbackShowStatus
|
||||
self.oldAvlnStatus = 0
|
||||
|
|
@ -44,8 +43,10 @@ class pyPlcWorker():
|
|||
self.pev = fsmPev.fsmPev(self.addressManager, self.workerAddToTrace, self.hardwareInterface, self.showStatus)
|
||||
def __del__(self):
|
||||
if (self.mode == C_PEV_MODE):
|
||||
print("worker: deleting pev")
|
||||
try:
|
||||
del(self.pev)
|
||||
except:
|
||||
pass
|
||||
|
||||
def workerAddToTrace(self, s):
|
||||
# The central logging function. All logging messages from the different parts of the project
|
||||
|
|
|
|||
Loading…
Reference in a new issue