:: Re: [DNG] Systemd Shims
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Author: Edward Bartolo
Date:  
To: Steve Litt
CC: dng
Subject: Re: [DNG] Systemd Shims
This is a screenshot. It is not the type of Microsoft Aero designs but
it functions and it gives the necessary information while respecting
the intelligence of users.

http://s17.postimg.org/6frwnwmhb/2015_08_22_070752_1600x900_scrot.png



On 22/08/2015, Edward Bartolo <edbarx@???> wrote:
> GUI frontend is ready.
>
> Now, it is time for users to discover deep bugs that only show their
> heads when the user number increases.
>
> A popup window has been provided to display detailed information about
> any available wifi hotspots. This simplified the design and
> implementation of the GUI.
>
> Hopefully, users find it useful.
>
> On 21/08/2015, Edward Bartolo <edbarx@???> wrote:
>> I think, I can also upload the Lazarus code of the frontend. I am
>> using the application, and for those who love the principle of "Keep
>> it simple stuptid", it is a nice simple application which is run on
>> request. It is also controlled by the user, instead of automatically
>> making decisions behind the scenes.
>>
>> Automation will definitely take more time to do, but for the KISS
>> lovers, the application can be provided as is, with a version number
>> of 0.1 or something similar.
>>
>> When the C backend is hardened enough, it will be time for upload to
>> git.devuan.org.
>>
>> Cheers, and may DEVUAN be enjoyed by anyone wanting software freedom.
>>
>> Edward
>>
>> On 21/08/2015, Edward Bartolo <edbarx@???> wrote:
>>> At long last, the backend runs without the frontend having for it to
>>> finish as I wished. This got rid of frontend hangs.
>>>
>>>
>>>
>>> On 21/08/2015, Steve Litt <slitt@???> wrote:
>>>> On Fri, 21 Aug 2015 06:47:13 +0100
>>>> Edward Bartolo <edbarx@???> wrote:
>>>>
>>>>> Parsing headaches:
>>>>>
>>>>> I have this chunk of data retrieved from the backend which I need to
>>>>> parse *reliably*. The goal is to read the SSID and the corresponsing
>>>>> signal strength.
>>>>>
>>>>> How should I proceed. This part of code will be done from within
>>>>> Lazarus. Please, be informed that Lazarus generated GUI uses GTK* as a
>>>>> base. The executable can is also statically built which means an
>>>>> increased portability. Executables are about 3 MB. In the past I have
>>>>> written such applications that dwarf what I am doing and still the
>>>>> size is small.
>>>>>
>>>>> Here is what I want to parse:
>>>>>
>>>>> root@edbarx-pc:/home/edbarx# iwlist wlan0 scan | grep -B 4 ESSID
>>>>>
>>>>> <<<<<<<<<
>>>>>                     Channel:1
>>>>>                     Frequency:2.412 GHz (Channel 1)
>>>>>                     Quality=70/70  Signal level=-34 dBm
>>>>>                     Encryption key:on
>>>>>                     ESSID:"EB-TP-LNK67"
>>>>> --
>>>>>                     Channel:6
>>>>>                     Frequency:2.437 GHz (Channel 6)
>>>>>                     Quality=24/70  Signal level=-86 dBm
>>>>>                     Encryption key:on
>>>>>                     ESSID:"TNCAPA0332D"
>>>>> --
>>>>>                     Channel:11
>>>>>                     Frequency:2.462 GHz (Channel 11)
>>>>>                     Quality=30/70  Signal level=-80 dBm
>>>>>                     Encryption key:on
>>>>>                     ESSID:"Home WiFi"

>>>>> >>>>>>>>>>>>>>>
>>>>
>>>> :-)
>>>>
>>>> Hi Edward,
>>>>
>>>> At this point you're a lot more knowledgeable on this situation than I,
>>>> but I'll give you an opinion. If this problem were any more complex,
>>>> I'd suggest spawning awk, but it looks to me like as long as you can
>>>> get these lines into Lazarus, I think you're golden.
>>>>
>>>> Please refer to http://dpaste.com/0FZE769 ...
>>>>
>>>> First thing: By using grep -B, you're throwing away some information
>>>> you need: Specifically, encryption type. I'd recommend you pull *all*
>>>> the output from iwscan $device scanning into a Turbo Pascal (you know
>>>> what I mean) file linked into your Lazarus program,
>>>> except "^\s+IE: Unknown".
>>>>
>>>> It's pretty easy to parse:
>>>>
>>>> * Throw away anything beginning with "^\s*IE: Unknown"
>>>> * Throw away ^$device\s+Scan completed
>>>> * Every ^\s*Cell \d starts a new record, record the cell number
>>>>
>>>> Every line is one of the following:
>>>>
>>>> 1. ^$device\s+Scan Completed
>>>> 2. ^\s+Cell
>>>> 3. ^\s+IE: Unknown
>>>> 4. ^\s+\S.*:
>>>> 5. ^\s+\S.*=
>>>> 6. Everything else
>>>>
>>>> #3 can be avoided by having your original command be the following:
>>>>
>>>> root@edbarx-pc:/home/edbarx# iwlist wlan0 scan | grep -v "^\s+IE:
>>>> Unknown:"
>>>>
>>>> #4 are the key/value pairs comprising most of what you need
>>>>
>>>> #6 are all additional information appended to the #4 item preceding
>>>> them. So you need a somewhat stateful algorithm. You may or may not
>>>> need a Group Cipher, Pairwise Ciphers, and/or Authentication Suites. If
>>>> you don't need those three things, I think you can throw away all #6.
>>>>
>>>> #2 separates records
>>>> #5 is the signal quality/level line. Give it its own subroutine.
>>>> #1 gets thrown out
>>>>
>>>> Anyway, you definitely need to capture the encryption type, and by
>>>> using your grep -B4 ESSID you're throwing that away. NetworkManager and
>>>> Wicd both show encryption type on the ESSID list, and when I use
>>>> either of this, I want to know which ones are WPA as opposed to
>>>> (eeeuuu) WEP and which are (be very careful) unencrypted.
>>>>
>>>> HTH,
>>>>
>>>> Steve
>>>>
>>>> Steve Litt
>>>> August 2015 featured book: Troubleshooting: Just the Facts
>>>> http://www.troubleshooters.com/tjust
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>>>>
>>>
>>
>