in reply to Re^3: Help with Lorcon XS library
in thread Help with Lorcon XS library

Hi, unfortunately the program dies (I've already done some test and i am not surprised) the die message is:  [-] Unable to find DRV for [iwlwifi] update Hi again, the problem persists only in the 2 functions ( lorcon_find_driver and  lorcon_create , some functions ( like the lorcon_list_drivers ) works properly while other which need the $context ( aka the  Net::Lorcon2::lorcon_create) crashes ( I think the problem is linked to the  lorcon_create. regards Edoardo M.

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Re^5: Help with Lorcon XS library
by syphilis (Archbishop) on Jul 21, 2020 at 11:41 UTC
    some functions ( like the lorcon_list_drivers ) works properly

    I don't know much about Net::Lorcon2, but I'm guessing that the string that you assign to $driver must be the same as one of the strings listed by lorcon_list_drivers().
    What happens if you assign those strings (as shown by Dumper(\@cards)) to $driver ?
    Could you provide us with the output of Dumper(\@cards) from that second program I posted.

    Cheers,
    Rob
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      If this is the lorcon in question:

      Current State:
The lorcon2 rewrite currently only supports the mac80211 driver,
additional drivers will be restored over time

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        HI marto! my network card has a mac80211 driver, I controlled now. Regards Edoardo M
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      Hi the output of the 
       lorcon_lsit_driver is:
$VAR1 = [
          {
            'name' => 'rtfile',
            'details' => 'Real-time PCAP file source'
          },
          {
            'details' => 'PCAP file source',
            'name' => 'file'
          },
          {
            'name' => 'madwifing',
            'details' => 'Linux madwifi-ng drivers, deprecated by ath5
+k and ath9k'
          },
          {
            'name' => 'tuntap',
            'details' => 'Linux tuntap virtual interface drivers'
          }
        ];

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      I have already tried if I use: 
       
  print Net::Lorcon2::lorcon_create("wlo1", $driver); #where $driver c
+an be madwifing or other it says:
  
  Net::Lorcon2::lorcon_create: driver is not a reference at -e line 3.

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      and if I do 
         print Net::Lorcon2::lorcon_create("wlo1", \$driver); #where $driver
+ can be madwifing or other it says
   segmentation error (core dump created)

      [download]
      Regards. Edoardo
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          print Net::Lorcon2::lorcon_create("wlo1", $driver); #where $driver c
+an be madwifing or other it says:
 Net::Lorcon2::lorcon_create: driver is not a reference at -e line 3.

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        Yes - you should not do that.
        As the error message says $driver is not a reference. 

           print Net::Lorcon2::lorcon_create("wlo1", \$driver); #where $driver
+ can be madwifing or other it says
   segmentation error (core dump created)

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        Yes - you should not do that either. At least, this time you have passed something that is a reference.
        But it's not a reference to the right thing, and therefore causes a segfault.

        As I said in my first post, the correct thing to do would be: 
        my $driver = "madwifing";
my $if = "wlo1";

my $drv = lorcon_find_driver($driver);
if (! $drv) {
   print STDERR "[-] Unable to find DRV for [$driver]\n";
   exit 1;
}

my $lorcon = lorcon_create($if, $drv);
if (! $lorcon) {
  print STDERR "[-] lorcon_create failed\n";
  exit 1;
}

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        What happens if you do that ?
        In view of what marto dug up, it may not work either - but it's at least worth a try.

        Cheers,
        Rob
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