Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Just some thoughts:
  1. $progid == "bush" should be $progid eq "bush"
  2. You need to untaint your variable $progid, follow the link to Ovids tutorial below for more info on CGI security.
  3. When you open the '$random_file' file you do not test whether it suceeded (see example)
  4. You have no else clause in your conditional block
  5. Try using use CGI::Carp qw(fatalsToBrowser); for debugging. See the CGI::Carp manpage for details.
  6. Use CGI to print your header. Don't do it manually.
  7. You redifine $/ but don't do it locally. Yes I know you are doing this to slurp files but you might find you aren't opening your other files properly (not knowing their content I couldn't say either way).
Your file opening code uses a variable to open the file 'random_file' but you declare it inside the open routine and never give it a value. Assuming its value is in 'bush.conf' then you need to remove the 'my'. An untested snippet would something like
# Assuming is set in bush.conf unless(open(FILE,"<$random_file")) { # Handle it gracefully } my @lines = <FILE>; close(FILE);
Or you could use $!:
open(FILE,"<$random_file") || die "Could not open file",$!;
Note that I have added a < to implicitly imply that I am opening the file. You might also want to consider the three argument form of open(). See the manpage for details.

And finally: Ovids course

In reply to Re: Errors in my (simple?) CGI Script! by simon.proctor
in thread Errors in my (simple?) CGI Script! by munchie

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 or How to display code and escape characters are good places to start.
Log In?

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

How do I use this? | Other CB clients
Other Users?
Others drinking their drinks and smoking their pipes about the Monastery: (4)
As of 2022-08-15 12:48 GMT
Find Nodes?
    Voting Booth?

    No recent polls found