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Hello again jamroll,

Let's take the question one at a time. Why you should use Package name as first letter capital? Read the perlman:perlstyle:

From the link above regarding the packages:

Package names are sometimes an exception to this rule. Perl informally + reserves lowercase module names for ``pragma'' modules like integer +and strict. Other modules should begin with a capital letter and use +mixed case, but probably without underscores due to limitations in pr +imitive file systems' representations of module names as files that m +ust fit into a few sparse bytes.

Having said that I would recommend renaming the directory to Pm/Security the same applies to the rest of the modules that you are using. Let's move on to the next problem, calling the module.

You are saying that you have a main.pl script that gives you the error:

Undefined subroutine &pm::security::banned called at pm/user.pm line 1 +36

Let's try to replicate the problem. I am creating the directories as you say d:/apache24/htdocs/pm/user.pm

I would modify a bit your module so I would recommend to do the same on the rest of your modules. First of all I use also use warnings; for many reasons make your code more safe. Second from the Perl documentation Exporter/Selecting What to Export:

Do not export anything else by default without a good reason! Exports pollute the namespace of the module user. If you must export t +ry to use @EXPORT_OK in preference to @EXPORT and avoid short or comm +on symbol names to reduce the risk of name clashes.

Having said that I modify your Export to Export_OK. On your modules you need to close them with 1;. Why? Read the perlmod/Making your module threadsafe:

If it returns a true value, then no objects of that class will be clon +ed; or rather, they will be copied as unblessed, undef values.

If this is not enough also read Perl Module ending without 1;. Having said that I add also 1; at the end of your module.

Sample of your module based on the modifications that I propose Security.pm in the directory of my local PC /home/tinyos/apache24/htdocs.

package Pm::Security; #/ # a module to encapsulate security-related functions #/ use CGI; use strict; use warnings; use Exporter; use vars qw($VERSION @ISA @EXPORT_OK); $VERSION = 1.00; @ISA = qw(Exporter); @EXPORT_OK = qw( _tests banned bounced get_salt password_correct password_set get_client_IP login logout ); ###################################################################### sub banned { #* # gets the banned status of a uid # !this function requires updating # the code in this function needs to # conform to a more basic format # there should only be one return! #* # my ($db, $uid) = @_; # a DBH && a uid # my $query = "select banned from users where ID = " . $db->quote( +$uid); # my $result = pm::bc_sql::sql_execute($db, $query); # should resu +lt in a 0 or a hash with one key: a UID # $result is a hash reference # if (ref $result eq "HASH") { # if ($result->{banned} eq 2) { # return 1; # 1 when the user is banned # } # } return reversed @_; # 0 when the user is not banned #usage: if (banned($db, $uid)) { print "yer banned, bitch"; } } 1;

Now that we have defined and applied minor modification to your module let's try to call it for execution from our main.pl:

Sample of main.pl script, remember the path is relevant to my local PC but it should work for your PC with minor modifications:

#!usr/bin/perl use say; use strict; use warnings; use lib '/home/tinyos/apache24/htdocs'; use Pm::Security qw( banned ); my @list = qw (First ~ Second); say banned(@list); __END__ $ perl main.pl Second~First

A minor detail to add here I call the script from a different directory where the dir Pm is located. I manage to do that by using the lib module. If I comment out this line # use lib '/home/tinyos/apache24/htdocs'; I get the following expected error:

$ perl main.pl Can't locate Pm/Security.pm in @INC (you may need to install the Pm::S +ecurity module) (@INC contains: /home/tinyos/perl5/lib/perl5/5.24.1/x +86_64-linux-gnu-thread-multi /home/tinyos/perl5/lib/perl5/5.24.1 /hom +e/tinyos/perl5/lib/perl5/x86_64-linux-gnu-thread-multi /home/tinyos/p +erl5/lib/perl5 /etc/perl /usr/local/lib/x86_64-linux-gnu/perl/5.24.1 +/usr/local/share/perl/5.24.1 /usr/lib/x86_64-linux-gnu/perl5/5.24 /us +r/share/perl5 /usr/lib/x86_64-linux-gnu/perl/5.24 /usr/share/perl/5.2 +4 /usr/local/lib/site_perl /usr/lib/x86_64-linux-gnu/perl-base) at ma +in.pl line 7. BEGIN failed--compilation aborted at main.pl line 7.

Of course it is because Perl is not aware of my Pm::Security module that I have defined in my directory.

One last question, why you are calling your function as sub banned($$) I was looking online regarding this because I never used it before and I found perlvar/General Variables:

LinuxThreads is now obsolete on Linux, and caching getpid() like this +made embedding perl unnecessarily complex (since you'd have to manual +ly update the value of $$), so now $$ and getppid() will always retur +n the same values as the underlying C library.

If this is the case why don't you call getppid instead of $$. Maybe I am wrong regarding this point so another Monk could share some knowledge.

Hope this provides you enough information to resolve all of your module(s) problems.

Seeking for Perl wisdom...on the process of learning...not there...yet!

In reply to Re^3: Perl Modules by thanos1983
in thread Perl Modules by jamroll

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