Beefy Boxes and Bandwidth Generously Provided by pair Networks
Your skill will accomplish
what the force of many cannot
 
PerlMonks  

DSN Wrapper for Secure DBI Passwords

by lindex (Friar)
on Apr 27, 2001 at 21:10 UTC ( #76172=snippet: print w/ replies, xml ) Need Help??

Description:

I wrote this script because of Question of safe data passing.... Keep in mind that it only an example and was not written as a script to use, but it would prolly work :)

Read Question of safe data passing... for more details.


###
# dnswrapper.pl to transmit dsn lines (usernames,passwords) to applica
+tions
###

#!/usr/bin/perl

use strict;
use Storable qw(freeze);
use vars qw($configfile %config $caller $dbi);

$configfile="dsn.conf";

open(C,$configfile) || die("$!: $configfile");
while(<C>) {$config{$1}=$2 if(/^\[([^\[|^\]]+)\]=\[([^\[|^\]]+)\]/)}
close(C);

die("No DSN Line !\n") if (!exists $config{DSN});
die("No USER Line !\n") if (!exists $config{USER});
die("No CALLER Line !\n") if (!exists $config{CALLER});
die("What Iam my own parent !") if($$==getppid());

open(P,'/proc/'.getppid().'/cmdline') || die("$!: PARENT CMDLINE");
$caller=<P>;
close(P);

$caller=$1 if ($caller=~/^perl\0([^\0]+)/);

if (getpwuid($<) eq $config{USER} and $caller eq $config{CALLER}) {
        print freeze({DSN=>$config{DSN}});
} else {
        die("Something went wroung !\n");
}

and the config
[USER]=[unixuser]
[DSN]=[DBI:mysql:dbname;user=dbuser]
[CALLER]=[/usr/local/bin/caller.pl]
and my example caller script
#!/usr/bin/perl

open(P,"perl ./dsnwrapper.pl|");
binmode(P);
my($dsn)=${(thaw(join('',<P>)))[0]}{DSN};
close(P);
my($dbh)=DBI->connect($dsn) || die(DBI->errstr);
Comment on DSN Wrapper for Secure DBI Passwords
Select or Download Code
Re: DSN Wrapper for Secure DBI Passwords
by suaveant (Parson) on Apr 27, 2001 at 21:48 UTC
    As far as I can tell, if the script calling it sets $0 it completely wrecks this mode of authentication...
                    - Ant
      errm forgot that /proc/pid/cmdline is $0... will fix..


      lindex
      /****************************/ jason@gost.net, wh@ckz.org http://jason.gost.net /*****************************/

Back to Snippets Section

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: snippet [id://76172]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others imbibing at the Monastery: (11)
As of 2014-07-23 08:02 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    My favorite superfluous repetitious redundant duplicative phrase is:









    Results (136 votes), past polls