Re: perl null padding

When I do this, I get s length of 24 for $atr:

$str = 'abcde';
$str .= "\0" x (24 - length $str);
print length $str;
print "\n";
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How are you using the string? Printing something with null bytes might not do what you expect and probably won't do what you want.

Comment on Re: perl null padding Download Code

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Re^2: perl null padding by m.y (Novice) on Apr 12, 2008 at 00:32 UTC
I get the right length also in a non mod_perl environment. For some reason in mod_perl it never goes past the null padding line.	[reply]
Re^3: perl null padding by nobull (Friar) on Apr 13, 2008 at 09:41 UTC
For some reason in mod_perl it never goes past the null padding line. What direct observation are you making that lead you to conclude that? If you comment out the padding line does it correctly print the length of the unpadded string? Have you put a `die()` or similar after the padding to see if execution is really reaching that point? It seems much more likely that something you are doing later in the script with the null bytes is causing a mode of failure that prevents the data that's been written to response from appearing on the client.	[reply] [d/l]
Re^4: perl null padding by m.y (Novice) on Apr 14, 2008 at 18:51 UTC
Right now its a pretty simple handler which simply prints out the length of the null-padded string. What I noticed from running the code was that the code immediately after the null-padding line is never reached. If I comment out this line then the code after it executes as expected.	[reply]