[SOLVED] Script for auto-connection

Question

Hey,
I want to write a script that does the following:
When I switch my laptop on, checks (using the "iwlist wlan0 scan" command) which wireless networks are in range.
Then, if my home's essid is found, launch the file that connects to that network.
I know quite a few programming languages (JAVA, C, C++, etc.), but no scripting languages what so ever..
I would like a recommendation of a good scripting language to use, and maybe a few pointers as well..
Thanks in advance
Fiod
Last edited by fiod (2007-10-22 18:16:52)

Answer 1

I started to write a script wich list the available networks in python
maybe that can help you for starting
It is really fun to write python but when you come from java or C, you have to learn a new way of programming !!!
Python is really easy to learn.
#!/usr/bin/env python
import os
class AccessPoint:
adress = ""
essid = ""
quality = 0
mode = ""
frequency = ""
channel = 0
encryptionKey = ""
encryptionType = "No Information available"
def __init__(self, address):
self.address = address
def __cmp__(a, b):
return cmp(a.quality, b.quality)
tmpFile = "/tmp/wifiap"
interface = "wlan0"
if (os.path.exists(tmpFile) == False):
os.system ("iwlist %s scan > %s" % (interface,tmpFile))
data = open(tmpFile).readlines() # open the file
accessPoints = []
for line in data:
if "Address" in line: # create a new network dict
address = line[line.find("Address") + 8:]
accessPoints.append(AccessPoint(address.strip()))
elif "ESSID" in line:
accessPoints[-1].essid = line[line.find("ESSID") + len("ESSID") + 1:].strip()
elif "Mode" in line:
accessPoints[-1].mode = line[line.find("Mode") + len("Mode") + 1:].strip()
elif "Frequency" in line:
accessPoints[-1].frequency = line[line.find("Frequency") + len("Frequency") + 1:].strip()
elif "Encryption key" in line:
accessPoints[-1].encryptionKey = line[line.find("Encryption key") + len("Encryption key") + 1:].strip()
elif "IE" in line:
accessPoints[-1].encryptionType = line[line.find("IE") + len("IE") + 1:].strip()
elif "Quality" in line:
accessPoints[-1].quality = line[line.find("Quality") + len("Quality") + 1:line.find("Signal")].strip()
elif "Channel" in line:
accessPoints[-1].channel = line[line.find("Channel") + len("Channel") + 1:].strip()
accessPoints.sort()
accessPoints.reverse()
print "Listing found networks:"
print '%-18s %-20s %-8s %-7s %-4s (%s)' % ("ADDRESS", "ESSID", "QUALITY", "CHANNEL", "ENCRYPTION KEY" , "ENCRYPTION TYPE")
for accessPoint in accessPoints:
print '%-18s %-20s %-8s %-7s %-4s (%s)' % (accessPoint.address, accessPoint.essid, accessPoint.quality, accessPoint.channel, accessPoint.encryptionKey , accessPoint.encryptionType)