#405 Visual subnet display doesn't work

[Anonymous]

Hi,

The features 'Visual subnet display' doen't work every time...
Sometimes, the display is ok, sometimes the features display anything... I don't understand why...

[Anonymous]

I do a "verify database" everything is fine.

Here screenshoot :

[Anonymous]

[Miha Petkovsek]

32 bit system ?

[Matthias Becher]

I had the same problem on Windows Server 2012 r2. Its a 64bit system.
The problem is in the file app/subnets/subnet-visual.php
On line 9 and 10 there is an typecast to INT. On Windows systems INT-values are php-internal max 32bit signed.
To solve the problem remove these two typecasts. The gmp_and() function dont need the value as INT, it understands the string input too.

Original line 9 and 10:

$start_visual = gmp_strval(gmp_and("0xffffffff", (int) $Subnets->transform_to_decimal($subnet_detailed['network'])));

$stop_visual  = gmp_strval(gmp_and("0xffffffff", (int) $Subnets->transform_to_decimal($subnet_detailed['broadcast'])));

Working line 9 and 10

$start_visual = gmp_strval(gmp_and("0xffffffff", $Subnets->transform_to_decimal($subnet_detailed['network'])));

$stop_visual  = gmp_strval(gmp_and("0xffffffff", $Subnets->transform_to_decimal($subnet_detailed['broadcast'])));

For all Windows-Users it would be nice to solve this Problem in the next version ;)

PS:
Why it sometimes works and sometimes not:
IPs lower than 128.0.0.0 fit into an 32bit signed value. So they are calculated right and the visual display works fine. With larger IPs the visual display dont work.

Matthias Becher