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addressManager: remove old style ifconfig
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uhi22
parent
2f68d6a76f
commit
ea45451c28
1 changed files with 49 additions and 65 deletions
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@ -58,77 +58,61 @@ class addressManager():
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foundAddresses.append(line[k+1:])
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else:
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# on Raspberry
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cfg_useOldStyleIfconfig = 0
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if (cfg_useOldStyleIfconfig!=0):
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result = subprocess.run(["ifconfig"], capture_output=True, text=True)
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if (len(result.stderr)>0):
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print(result.stderr)
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else:
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lines = result.stdout.split("\n")
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for line in lines:
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if (line.strip().find("inet6")>0):
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k = line.strip().find("fe80::") # the beginning of the IPv6
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# instead of the deprecated ifconfig, use "ip addr"
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result = subprocess.run(["ip", "addr"], capture_output=True, text=True)
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if (len(result.stderr)>0):
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print(result.stderr)
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else:
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blInTheEthernetChapter = 0
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lines = result.stdout.split("\n")
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for line in lines:
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# print(line);
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if (line[0:1]!=" "): # if the line does not start with a blank, then it is a heading, e.g.
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# 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
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# 3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
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# print("This is a heading")
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sFind = ": " + getConfigValue("eth_interface") # e.g. "eth0"
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if (line.find(sFind)>0):
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# print("This is the heading for the ethernet.")
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blInTheEthernetChapter = 1 # we are in the ethernet chapter
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else:
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blInTheEthernetChapter = 0 # we are not in the ethernet chapter
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else:
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# The line started with a blank. This means, it is no heading.
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# In the best case, we find here something like
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# inet6 fe80::181f:efdf:97e5:2191/64 scope link
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if ((blInTheEthernetChapter==1) and (line.find(" inet6")>0) and (line.find(" scope link")>0)):
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k = line.find(" fe80::") # the beginning of the IPv6
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if (k>0):
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sIpWithText = line[k+1:]
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x = sIpWithText.find(" ") # the space is the end of the IPv6
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sIp = sIpWithText[0:x]
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sIp = sIpWithText[0:x]
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x = sIp.find("/") # remove the /64 at the end
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if (x>0):
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sIp = sIp[0:x]
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# print("[addressManager] IP=>" + sIp + "<")
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foundAddresses.append(sIp)
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else: # instead of the deprecated ifconfig, use "ip addr"
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result = subprocess.run(["ip", "addr"], capture_output=True, text=True)
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if (len(result.stderr)>0):
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print(result.stderr)
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else:
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blInTheEthernetChapter = 0
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lines = result.stdout.split("\n")
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for line in lines:
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# print(line);
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if (line[0:1]!=" "): # if the line does not start with a blank, then it is a heading, e.g.
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# 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
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# 3: wlan0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
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# print("This is a heading")
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sFind = ": " + getConfigValue("eth_interface") # e.g. "eth0"
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if (line.find(sFind)>0):
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# print("This is the heading for the ethernet.")
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blInTheEthernetChapter = 1 # we are in the ethernet chapter
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else:
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blInTheEthernetChapter = 0 # we are not in the ethernet chapter
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else:
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# The line started with a blank. This means, it is no heading.
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# In the best case, we find here something like
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# inet6 fe80::181f:efdf:97e5:2191/64 scope link
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if ((blInTheEthernetChapter==1) and (line.find(" inet6")>0) and (line.find(" scope link")>0)):
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k = line.find(" fe80::") # the beginning of the IPv6
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if (k>0):
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sIpWithText = line[k+1:]
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x = sIpWithText.find(" ") # the space is the end of the IPv6
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sIp = sIpWithText[0:x]
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x = sIp.find("/") # remove the /64 at the end
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if (x>0):
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sIp = sIp[0:x]
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# print("[addressManager] IP=>" + sIp + "<")
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foundAddresses.append(sIp)
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# Also the ethernet MAC is visible here, something like
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# link/ether b8:27:eb:27:33:53 brd ff:ff:ff:ff:ff:ff
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if ((blInTheEthernetChapter==1) and (line.find(" link/ether")>0)):
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# print(line)
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k = line.find("link/ether ")
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# print(k)
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strMac = line[k+11:k+28]
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# e.g. "b8:27:eb:12:34:56"
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# print(strMac)
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# Remove all ":"
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strMac = strMac.replace(":", "")
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# print(strMac)
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if (len(strMac)!=12):
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print("[addressManager] ERROR: invalid length of MAC string. Expected be 6 bytes, means 12 hex characters. Found " + str(len(strMac)))
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else:
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for i in range(0, 6):
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sTwoChar = strMac[2*i : 2*i+2]
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ba[i] = int(sTwoChar, 16)
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self.localMac = ba
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print("[addressManager] we have local MAC " + prettyMac(self.localMac) + ".")
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# Also the ethernet MAC is visible here, something like
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# link/ether b8:27:eb:27:33:53 brd ff:ff:ff:ff:ff:ff
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if ((blInTheEthernetChapter==1) and (line.find(" link/ether")>0)):
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# print(line)
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k = line.find("link/ether ")
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# print(k)
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strMac = line[k+11:k+28]
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# e.g. "b8:27:eb:12:34:56"
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# print(strMac)
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# Remove all ":"
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strMac = strMac.replace(":", "")
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# print(strMac)
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if (len(strMac)!=12):
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print("[addressManager] ERROR: invalid length of MAC string. Expected be 6 bytes, means 12 hex characters. Found " + str(len(strMac)))
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else:
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for i in range(0, 6):
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sTwoChar = strMac[2*i : 2*i+2]
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ba[i] = int(sTwoChar, 16)
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self.localMac = ba
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print("[addressManager] we have local MAC " + prettyMac(self.localMac) + ".")
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print("[addressManager] Found " + str(len(foundAddresses)) + " link-local IPv6 addresses.")
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