# script to parse and display users and repositories and rights (R, RW)

use strict;
use CGI qw(:standard);
use CGI::Carp qw(fatalsToBrowser);

##----------------------------
## Variables
##----------------------------

#debug
my $debug = 0; #set to 0 to turn off, 1 (true) to turn on

# title for page
my $PageTitle = "List of SVN Repositories";

## repository directory
my $SVN = "/apps/repos";
## location for htpasswd files
my $HTDIR = "/apps/apache2/conf/htpasswd";
## Set untainted path
$ENV{PATH} = '/apps/apache2/bin:/bin:/usr/bin:/usr/local/bin';
$ENV{IFS} = "" if $ENV{IFS} ne "";

# css
my $css = "http://<your server name>/css/main.css";
my $headerimg = "http://<your server name>/css/roger_rabbit_120.jpg";

##------------------------------
## MAIN
##------------------------------

&standard_header;
my ($ref_repos, $ref_tabledata, $ref_users) = &CreateTableSpace;
&DisplayTable ($ref_repos, $ref_tabledata, $ref_users);
&standard_footer;
exit;

##------------------------------
## subs
##------------------------------

sub standard_header {
    print header();
    print start_html(-Title => "$PageTitle", -BGCOLOR=>"White",
        -style => {
            -src => "${css}"
        }
    );
    print ("<div id=\"header\">\n");
    print p("<img src=\"${headerimg}\" title=\"Wells logo\" alt=\"wells logo\"/>\n");
    print ("</div>\n");
    print ("<div id=\"headertitle\">\n");
    print h3("Repositories<br/>\nusers | read (R) | read & write (RW)\n"); # start_multipart_form() if file upload
}

sub standard_footer {
    print end_html();
}

sub CreateTableSpace {
    my $ref_repos = &GetBlankRepos;
    my @repos = @$ref_repos; # dereference
    my %tabledata = (); # hash to hold table data
    my @users = (); # list of users
    my %seen = ();
    foreach my $rep (@repos) {
        open(FILE, "$HTDIR/${rep}_read") || croak "Failed to open $HTDIR/${rep}_read for reading...";
        my @filelines = <FILE>;
        close FILE;
        foreach my $line (@filelines) {
            # lines are user:passwd
            my ($user, $pass) = split (":", $line);
            unless ($seen{$user}) {
                $seen{$user} = 1; # save as seen
                push (@users, $user); # save the user to a list
            }
            $tabledata{$rep}{$user} = "read";
        }
        open (FILE, "$HTDIR/${rep}_write") || croak "Failed to open $HTDIR/${rep}_write for reading";
        my @file_lines = <FILE>;
        close FILE;
        foreach my $line (@file_lines) {
            # lines are user:passwd
            my ($user, $pass) = split (":", $line);
            unless ($seen{$user}) {
                $seen{$user} = 1; # save as seen
                push (@users, $user); # save the user to a list
            }
            $tabledata{$rep}{$user} = "readwrite";
        }
    }
    return (\@repos, \%tabledata, \@users);
}

sub GetBlankRepos {
    my @repos = ();
    # list $SVN
    opendir (DIR, $SVN) || croak "Failed to open directory $SVN for reading...";
    while (defined(my $file = readdir(DIR))) {
        # skip ".", ".." and .<hidden> files...
        if ($file =~ /^\./) {
            next;
        } else {
            push(@repos, $file);
        }
    }
    return (\@repos);
}