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#!/usr/bin/perl -w
=head1 NAME
postgres.pl - installation script to probe PostgreSQL configuration
=head1 VERSION
$LastChangedRevision$
=head1 DATE
$LastChangedDate$
=head1 DESCRIPTION
This script is called during "make" to probe the PostgreSQL
configuration. It accomplishes this by parsing the output from
pg_config and asking the user questions. Output collected in
"postgres.db".
=head1 AUTHOR
Sam Tregar <stregar@about-inc.com>
=head1 SEE ALSO
L<Bric::Admin>
=cut
use strict;
use FindBin;
use lib "$FindBin::Bin/lib";
use Bric::Inst qw(:all);
use File::Spec::Functions;
use Data::Dumper;
# check whether questions should be asked
our $QUIET;
$QUIET = 1 if $ARGV[0] and $ARGV[0] eq 'QUIET';
print "\n\n==> Probing PostgreSQL Configuration <==\n\n";
our %PG;
my $passwordsize = 10;
my @alphanumeric = ('a'..'z', 'A'..'Z', 0..9);
my $randpassword = join '', map $alphanumeric[rand @alphanumeric], 0..$passwordsize;
# setup some defaults
$PG{root_user} = get_default("POSTGRES_SUPERUSER") || 'postgres';
$PG{root_pass} = $ENV{POSTGRES_SUPERPASS} || '';
$PG{sys_user} = get_default("POSTGRES_BRICUSER") || 'bric';
$PG{sys_pass} = $QUIET ? $randpassword : 'NONE';
$PG{db_name} = get_default("POSTGRES_DB") || 'bric';
$PG{host_name} = $ENV{POSTGRES_HOSTNAME} || '';
$PG{host_port} = $ENV{POSTGRES_HOSTPASS} || '';
$PG{version} = '';
our $REQ;
do "./required.db" or die "Failed to read required.db : $!";
get_include_dir();
get_lib_dir();
get_bin_dir();
get_psql();
get_version();
get_host();
get_users();
# all done, dump out apache database, announce success and exit
open(OUT, ">postgres.db") or die "Unable to open postgres.db : $!";
print OUT Data::Dumper->Dump([\%PG],['PG']);
close OUT;
print "\n\n==> Finished Probing PostgreSQL Configuration <==\n\n";
exit 0;
sub get_include_dir {
print "Extracting postgres include dir from $REQ->{PG_CONFIG}.\n";
my $data = `$REQ->{PG_CONFIG} --includedir`;
hard_fail("Unable to extract needed data from $REQ->{PG_CONFIG}.")
unless $data;
chomp($data);
$PG{include_dir} = $data;
}
sub get_lib_dir {
print "Extracting postgres lib dir from $REQ->{PG_CONFIG}.\n";
my $data = `$REQ->{PG_CONFIG} --libdir`;
hard_fail("Unable to extract needed data from $REQ->{PG_CONFIG}.")
unless $data;
chomp($data);
$PG{lib_dir} = $data;
}
sub get_bin_dir {
print "Extracting postgres bin dir from $REQ->{PG_CONFIG}.\n";
my $data = `$REQ->{PG_CONFIG} --bindir`;
hard_fail("Unable to extract needed data from $REQ->{PG_CONFIG}.")
unless $data;
chomp($data);
$PG{bin_dir} = $data;
}
sub get_psql {
print "Finding psql.\n";
my $psql = catfile($PG{bin_dir}, 'psql');
hard_fail("Unable to locate psql executable.")
unless -e $psql and -x $psql;
$PG{psql} = $psql;
}
sub get_version {
print "Finding PostgreSQL version.\n";
my $data = `$REQ->{PG_CONFIG} --version`;
hard_fail("Unable to extract needed data from $REQ->{PG_CONFIG}.")
unless $data;
chomp $data;
$data =~ s/\s*PostgreSQL\s+(\d\.\d(\.\d)?).*/$1/;
$PG{version} = $data;
}
# ask the user for user settings
sub get_users {
print "\n";
ask_confirm("Postgres Root Username", \$PG{root_user}, $QUIET);
ask_password("Postgres Root Password (leave empty for no password)",
\$PG{root_pass}, $QUIET);
unless ($PG{host_name}) {
$PG{system_user} = $PG{root_user};
while(!$QUIET) {
ask_confirm("Postgres System Username", \$PG{system_user}, $QUIET);
$PG{system_user_uid} = (getpwnam($PG{system_user}))[2];
last if defined $PG{system_user_uid};
print "User \"$PG{system_user}\" not found! This user must exist ".
"on your system.\n";
}
}
while(1) {
ask_confirm("Bricolage Postgres Username", \$PG{sys_user}, $QUIET);
if ($PG{sys_user} eq $PG{root_user}) {
print "Bricolage Postgres User cannot be the same as the Postgres Root User.\n";
} else {
last;
}
}
ask_password("Bricolage Postgres Password", \$PG{sys_pass}, $QUIET);
ask_confirm("Bricolage Database Name", \$PG{db_name}, $QUIET);
}
# ask for host specifics
sub get_host {
print "\n";
ask_confirm(
"Postgres Database Server Hostname (default is unset, i.e., localhost)",
\$PG{host_name},
$QUIET,
);
ask_confirm(
"Postgres Database Server Port Number (default is unset, i.e., 5432)",
\$PG{host_port},
$QUIET,
);
}
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