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Fix issue where signal strength wouldn't be reported correctly if the first link quality regex didn't match.

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Add some helper methods that will eventually be used for encryption template parsing.
Use more specific exception checking in a few places.
This commit is contained in:
Dan O'Reilly
2009-02-27 00:08:31 -05:00
parent 5aaaa117e7
commit ae0f589d43
6 changed files with 70 additions and 54 deletions
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1
.bzrignore
View File

@@ -23,3 +23,4 @@ scripts/wicd-client
scripts/wicd-curses
translations/*
wicd/wpath.py
*tags

22
wicd/backends/be-ioctl.py
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@@ -33,8 +33,7 @@ from wicd import misc
from wicd import wnettools
from wicd import wpath
from wicd.wnettools import *
from wicd.wnettools import strength_pattern, altstrength_pattern, wep_pattern, \
signaldbm_pattern
from wicd.wnettools import wep_pattern, signaldbm_pattern
import iwscan
import wpactrl
@@ -311,15 +310,8 @@ class WirelessInterface(Interface, wnettools.BaseWirelessInterface):
# Link Quality
ap['qual_found'] = True
try:
[(strength, max_strength)] = strength_pattern.findall(cell["stats"])
if max_strength:
ap["quality"] = 100 * int(strength) // int(max_strength)
else:
ap["quality"] = int(strength)
except ValueError:
ap['quality'] = misc.RunRegex(altstrength_pattern,cell["stats"])
if not ap['quality']:
ap['quality'] = self._get_link_quality(cell['stats'])
if ap['quality'] is None:
ap['qual_found'] = False
ap['quality'] = -1
@@ -498,10 +490,12 @@ class WirelessInterface(Interface, wnettools.BaseWirelessInterface):
buff = get_iw_ioctl_result(self.iface, SIOCGIWSTATS)
strength = ord(buff[2])
max_strength = self._get_max_strength()
if strength and max_strength:
if strength not in ['', None] and max_strength:
return 100 * int(strength) // int(max_strength)
return strength
elif strength not in ['', None]:
return int(strength)
else:
return None
def _get_max_strength(self):
""" Gets the maximum possible strength from the wireless driver. """

36
wicd/misc.py
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@@ -26,6 +26,7 @@ import gobject
from threading import Thread
from subprocess import Popen, STDOUT, PIPE, call
from commands import getoutput
from itertools import repeat, chain, izip
# wicd imports
import wpath
@@ -243,9 +244,11 @@ def ParseEncryption(network):
# Write the data to the files then chmod them so they can't be read
# by normal users.
f = open(wpath.networks + network["bssid"].replace(":", "").lower(), "w")
os.chmod(wpath.networks + network["bssid"].replace(":", "").lower(), 0600)
os.chown(wpath.networks + network["bssid"].replace(":", "").lower(), 0, 0)
file_loc = os.path.join(wpath.networks,
network['bssid'].replace(":", "").lower())
f = open(file_loc, "w")
os.chmod(file_loc, 0600)
os.chown(file_loc, 0, 0)
# We could do this above, but we'd like to read protect
# them before we write, so that it can't be read.
f.write(config_file)
@@ -691,3 +694,30 @@ def timeout_add(time, func, milli=False):
if not milli: time = time * 1000
return gobject.timeout_add(time, func)
def izip_longest(*args, **kwds):
""" Implement the itertools.izip_longest method.
We implement the method here because its new in Python 2.6.
"""
# izip_longest('ABCD', 'xy', fillvalue='-') --> Ax By C- D-
fillvalue = kwds.get('fillvalue')
def sentinel(counter = ([fillvalue]*(len(args)-1)).pop):
yield counter() # yields the fillvalue, or raises IndexError
fillers = repeat(fillvalue)
iters = [chain(it, sentinel(), fillers) for it in args]
try:
for tup in izip(*iters):
yield tup
except IndexError:
pass
def grouper(n, iterable, fillvalue=None):
""" Iterate over several elements at once
"grouper(3, 'ABCDEFG', 'x') --> ABC DEF Gxx"
"""
args = [iter(iterable)] * n
return izip_longest(fillvalue=fillvalue, *args)

2
wicd/wicd-daemon.py
View File

@@ -1053,7 +1053,7 @@ class WirelessDaemon(dbus.service.Object):
""" Returns the current signal strength. """
try:
strength = int(self.wifi.GetSignalStrength(iwconfig))
except:
except TypeError:
strength = 0
return strength

55
wicd/wnettools.py
View File

@@ -47,7 +47,7 @@ essid_pattern = re.compile('.*ESSID:"?(.*?)"?\s*\n', __re_mode)
ap_mac_pattern = re.compile('.*Address: (.*?)\n', __re_mode)
channel_pattern = re.compile('.*Channel:? ?(\d\d?)', __re_mode)
strength_pattern = re.compile('.*Quality:?=? ?(\d+)\s*/?\s*(\d*)', __re_mode)
altstrength_pattern = re.compile('.*Signal level:?=? ?(\d\d*)', __re_mode)
altstrength_pattern = re.compile('.*Signal level:?=? ?(\d+)\s*/?\s*(\d*)', __re_mode)
signaldbm_pattern = re.compile('.*Signal level:?=? ?(-\d\d*)', __re_mode)
mode_pattern = re.compile('.*Mode:(.*?)\n', __re_mode)
freq_pattern = re.compile('.*Frequency:(.*?)\n', __re_mode)
@@ -383,7 +383,7 @@ class BaseInterface(object):
the connection attempt.
Keyword arguments:
pipe -- stdout pipe to the dhcpcd process.
pipe -- stdout pipe to the dhclient process.
Returns:
'success' if succesful', an error code string otherwise.
@@ -408,7 +408,7 @@ class BaseInterface(object):
""" Determines if obtaining an IP using pump succeeded.
Keyword arguments:
pipe -- stdout pipe to the dhcpcd process.
pipe -- stdout pipe to the pump process.
Returns:
'success' if succesful, an error code string otherwise.
@@ -443,7 +443,7 @@ class BaseInterface(object):
while not dhcpcd_complete:
line = pipe.readline()
if line.startswith("Error"):
if "Error" in line or "timed out" in line:
dhcpcd_success = False
dhcpcd_complete = True
elif line == '':
@@ -1083,18 +1083,8 @@ class BaseWirelessInterface(BaseInterface):
# Link Quality
# Set strength to -1 if the quality is not found
# more of the patch from
# https://bugs.launchpad.net/wicd/+bug/175104
if (strength_pattern.match(cell)):
[(strength, max_strength)] = strength_pattern.findall(cell)
if max_strength:
ap["quality"] = 100 * int(strength) // int(max_strength)
else:
ap["quality"] = int(strength)
elif misc.RunRegex(altstrength_pattern,cell):
ap['quality'] = misc.RunRegex(altstrength_pattern, cell)
else:
ap['quality'] = self._get_link_quality(cell)
if ap['quality'] is None:
ap['quality'] = -1
# Signal Strength (only used if user doesn't want link
@@ -1190,6 +1180,22 @@ class BaseWirelessInterface(BaseInterface):
bssid = misc.RunRegex(bssid_pattern, output)
return bssid
def _get_link_quality(self, output):
""" Parse out the link quality from iwlist scan or iwconfig output. """
try:
[(strength, max_strength)] = strength_pattern.findall(output)
except ValueError:
(strength, max_strength) = (None, None)
if strength in ['', None]:
[(strength, max_strength)] = altstrength_pattern.findall(output)
if strength not in ['', None] and max_strength:
return (100 * int(strength) // int(max_strength))
elif strength not in ["", None]:
return int(strength)
else:
return None
def GetSignalStrength(self, iwconfig=None):
""" Get the signal strength of the current network.
@@ -1203,22 +1209,7 @@ class BaseWirelessInterface(BaseInterface):
output = misc.Run(cmd)
else:
output = iwconfig
strength_pattern = re.compile('.*Quality:?=? ?(\d+)\s*/?\s*(\d*)',
re.I | re.M | re.S)
altstrength_pattern = re.compile('.*Signal level:?=? ?(\d\d*)', re.I | re.M | re.S)
[(strength, max_strength)] = strength_pattern.findall(output)
if max_strength and strength:
if int(max_strength) != 0:
return 100 * int(strength) // int(max_strength)
else:
# Prevent a divide by zero error.
strength = int(strength)
if strength is None:
strength = misc.RunRegex(altstrength_pattern, output)
return strength
return self._get_link_quality(output)
def GetDBMStrength(self, iwconfig=None):
""" Get the dBm signal strength of the current network.