Beefy Boxes and Bandwidth Generously Provided by pair Networks
go ahead... be a heretic
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??

My favourite one is

$string =~ /\A(.*)\z/s or die; $string = $1;
however this one is also nice (for byte strings):
$x = pack "B*", do { unpack "B*", $x };
it appears that if you take a string apart to bits and reassemble, the result is untainted as the individual bits can't be tainted. In contrast, bytes are eight times larger then characters so they're large enough for taint to stick on them, thus the following doesn't untaint the string but returns it unchanged.
$x = pack "C*", do { unpack "C*", $x }; # wrong

In reply to Re: What's your favourite method of untainting? by ambrus
in thread What's your favourite method of untainting? by Corion

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others learning in the Monastery: (4)
As of 2024-03-28 15:30 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found