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Re: put SQL::Library file where?

by SilasTheMonk (Chaplain)
on Oct 03, 2009 at 17:20 UTC ( [id://799032]=note: print w/replies, xml ) Need Help??

in reply to put SQL::Library file where?

One critical consideration is that there is no way for a hacker to see your .pm, your sql files and any other files that they have no right to see. .pm and SQL files would be especially useful to a hacker as they would pretty much hand him the keys. Clearly you are keeping them out of the document root directory which is good. Apache has all sorts of ways mapping odd directories into user visible web space. Are you confident that you have none of these mapped so that your .pm and SQL files can be exposed? Also can you use the UNIX file permissions to add further protection. This depends a lot on to what extent this is a shared server. If it is a shared server can you protect yourself further by using suExec?

Edit I have reread your post again. You are planning to publish your .pm files to CPAN. I assume by this you mean the reusable components. With regard to those files I don't really see the issue. Files generic enough to be published to CPAN can go whereever perl modules normally go.

Edit 2 The more I think about the more confused I am about this. What are your priorities?

  1. Security? Something you definitely need to think about.
  2. Maintainability. I think this was your question. Actually you seemed to be referring to the specifics of your situation which you should probably not give us to much detail on.
  3. Publishing reusuable components to open source. If you have some I don't see what the question is. If you don't, don't mention CPAN.
  4. Regression testing. Can I recommend Test::Regression. Just a module I stumbled across somewhere. ;-)

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Re^2: (priorities) put SQL::Library file where?
by mandog (Curate) on Oct 03, 2009 at 20:38 UTC

    Yes, creating rational directory structure for our application is our primary goal. We want to put things in a standard place, so people that understand the standards, understand our application setup. We also want to structure our directory tree to facilitate building standard packages so people can install our software one their own servers.

    Thank you SilasTheMonk and jakobi, I now realize that we don't want to publish a cpan module. We have .pm files but none of them are of interest outside our application.

    The docuument we want is Debian (draft) webapp manual

Re^2: put SQL::Library file where?
by mandog (Curate) on Oct 03, 2009 at 17:48 UTC

    The issue is that when installed our .pm files will end up in any one of:

    ./ /usr/local/lib/site_perl /etc/perl /usr/local/lib/perl/5.10.0 /usr/local/share/perl/5.10.0 /usr/lib/perl5 /usr/share/perl5 /usr/lib/perl/5.10 /usr/share/perl/5.10 /usr/local/lib/site_perl

    We can say:  use OurApp::LibName; and find our libs

    We can't say  my $sql_lib=new SQL::Library {lib=>'sql.lib'}; We have to say: my $sql_lib=new SQL::Library {lib=>'/full/path/to/sql.lib'}

    We could write code to search @INC for our file, but that doesn't seem right

    There is little or no code in our libraries that is useful outside our application, so publishing to cpan might no make sense. Following the conventions of a cpan package may make our life easier even if we don't ever make a package.

      So as I understand it the question is how to rationalize the configuration of your app. Where would you like your config file to be? I think you need to first of all figure that out. Then you need to figure out how to inform your app of that location. You may want to think about what your ideal format would be. There are probably several modules in CPAN to read those config files. One of your lines would be the location of your SQL::Library file. So you code might end up as
      my $config = [....code to read config file]; ..... my $sql_lib=new SQL::Library {lib=>$config->sqllib_path()};

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