Fields in exported files?

Questions about the operation or expectations of the NetStumbler software

Fields in exported files?

Postby Medic » Mon Jul 22, 2002 2:34 pm

In netstumbler 0.3.23, when you export to wi-scan with extensions there are four fields that are added to the standard wi-scan format. These fields are Name, Flags, Channelbits and BcnIntvl.

I know what Name and BcnIntvl are, but I am looking for information on decoding the Flags and Channelbits fields.

What are these for, and what do the individual bits mean?


If this is better suited for a different forum, the please direct me or move it.
Thanks.
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Re: Fields in exported files?

Postby blackwave » Mon Jul 22, 2002 2:46 pm

Originally posted by Medic
What are these for, and what do the individual bits mean?


Greetings Medic, You may be interested to read these threads:
http://forums.netstumbler.com/showthread.php?s=&threadid=2050&perpage=15&highlight=ns1&pagenumber=2

http://forums.netstumbler.com/showthread.php?s=&threadid=2015

http://forums.netstumbler.com/showthread.php?s=&threadid=2043&highlight=ns1

A few have played around with the formats and have deciphered some of the meaning.. :) Hope it helps.
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Postby Medic » Mon Jul 22, 2002 2:52 pm

I'm not worried about the NS1 format. I'm specifically worried about the wi-scan summary with extensions, and what the Flags and Channel Bits are.

I believe that WEP encryption is part of the flags, but can't seem to find any relevant information on it.

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Postby lincomatic » Mon Jul 22, 2002 2:54 pm

sorry i dont remember offhand what bits are but you can find the definitions in the IEEE doc referenced in this thread:

http://forums.netstumbler.com/showthread.php?s=&threadid=1720&highlight=ieee+802.11b
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Postby Medic » Tue Jul 23, 2002 8:35 am

thanks, but still not what I'm looking for. I don't need the 802.11 specs. This is more of a wi-scan format question.

In the export file, you have two fields:

Flags Channelbits
0011 0040
0002 0040
0015 0040
0001 0040
0011 0002
0021 0002


I am curious as to what these fields actually are, and what they relate to.

Like I've said before, if this needs to be moved, please let me know.

Thanks in Advance (again) :)
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Postby lincomatic » Tue Jul 23, 2002 8:45 am

~lincomatic
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Postby Medic » Tue Jul 23, 2002 8:47 am

thats EXACTLY what I was looking for.. I don't know why I couldn't find it..

Thanks again.
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Postby lincomatic » Tue Jul 23, 2002 8:52 am

sorry, i took a look at that IEEE doc again, and it's pretty hard to understand the relationship to the NS output...the section referenced in the FAQ is in a different document.

but i found the links to the info you wanted by typing "NS data format" into the search function of the forum ;)
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Postby blackwave » Tue Jul 23, 2002 9:05 am

Hey don't mind me, I am just here sitting next to the chopped liver. :)
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Postby Thorn » Tue Jul 23, 2002 9:09 am

Medic,
Please try searching. It has been discussed quite a few times. Hint: Go to the main site (not the forums) and click on "FAQ".

BTW, (to answer the next question that usually follows) to decode, use XOR. That should be in the thread lincomatic posted, too.
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Postby Medic » Tue Jul 23, 2002 9:13 am

Thanks.. I just disregarded everything I read about NS1 files from my initial searches... Initially, I was under the impression that they had nothing to do with the wi-scan exports.

After re-reading the documents a couple of times, I've understood whats going on. Thanks again for your help, and I'll go away now.

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Postby acidrayne » Tue Jul 23, 2002 11:48 am

Originally posted by lincomatic
<spoonfeed>
the flagbits are defined on this page:
http://forums.netstumbler.com/showthread.php?s=&threadid=2050&perpage=40&highlight=NS1%20data%20format&pagenumber=3

look further back in the thread for the channelbits.

here is another flagbits definition:
http://www.netstumbler.com/modules.php?op=modload&name=FAQ&file=index&myfaq=yes&id_cat=1&categories=Official+NetStumbler+Version+0.3+FAQ#9
</spoonfeed>


One other note Medic ... As you can tell from the first link ... We have all had many discussions about the way that NS operates. Myself and a close friend sat around for numberous hours looking at freaking unicode and trying to disassemble NS so that we could all find ways to do what we wanted. If you read through that entire thread, you will see all the work that was put forth by many members, so when you come on and just want to be spoonfed the information, don't be surprised if you are told to hunt for your own food.
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wi-scan with extensions

Postby anandb » Wed Apr 28, 2004 3:51 pm

I have a related question about the two export formats. "wi-scan" and "wi-scan with extensions". Why do the GPS values change so much between the two formats?

I tried exporting the same file to both wi-scan format and wi-scan with extensions. And both those formats have differences in the lat. and long. values. Any clues?
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Postby iceburn68 » Wed Apr 28, 2004 3:56 pm

anandb wrote:I have a related question about the two export formats. "wi-scan" and "wi-scan with extensions". Why do the GPS values change so much between the two formats?

I tried exporting the same file to both wi-scan format and wi-scan with extensions. And both those formats have differences in the lat. and long. values. Any clues?


No clue, but this might be relevant . . .
http://netstumbler.org/showthread.php?t=10536
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Postby G8tK33per » Thu Apr 29, 2004 2:38 am

anandb wrote:I have a related question about the two export formats. "wi-scan" and "wi-scan with extensions". Why do the GPS values change so much between the two formats?

I tried exporting the same file to both wi-scan format and wi-scan with extensions. And both those formats have differences in the lat. and long. values. Any clues?

Way to go, Houdini...hope you're not waiting for a response to a 2 year old thread.
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