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#!/usr/bin/perl
# DocumentId: $Id: emuga-groupgen.pl 1765 2004-02-10 11:22:10Z ola $
# Author: $Author: ola $
# Date: $Date: 2004-02-10 12:22:10 +0100 (tis, 10 feb 2004) $
# Version: $Revision: 1.8 $
# Summary:
#
$definitionFile = "/etc/emuga/group.def";
$templateFile = "/etc/emuga/group.template";
$groupFile = "/etc/group";
$outFile = $groupFile;
###############################################################################
############################# USES ############################################
# Changes:
# 2002-03-18 Ola Lundqvist <opal@debian.org>
# Wrote the uses.
# 2004-02-02 Ola Lundqvist <opal@debian.org>
# Removed need of opalmod.
###############################################################################
use File::Copy;
use File::Basename;
use File::Find;
###############################################################################
############################# HELP ############################################
# Changes:
# 2002-03-18 Ola Lundqvist <opal@debian.org>
# Wrote it.
###############################################################################
$help = "
USAGE: emuaga-groupgen [options]
options:
--outfile file | -o file
The file to put the output
-s
Output to stdout.
--groupfile file | -g file
The original group file to generate data from.
--templatefile file | -t file
The template file to use for GIDS and some other things.
--definitionfile file | -d file
The definition file to use (for group definitions).
--dl n
Set the debug level.
--ql n
Set the quit level.
--help
Print this help message.
";
###############################################################################
############################# ARGS ############################################
# Desctiption:
# Argument handling.
# Changes:
# 2002-03-18 Ola Lundqvist <opal@debian.org>
# Wrote it.
# 2004-02-02 Ola Lundqvist <opal@debian.org>
# Removed need of opalmod.
###############################################################################
while ($_ = shift @ARGV) {
if (/^--/) {
if (/^--dl$/ || /^--debug-level$/) {
setDebugLevel(shift @ARGV);
}
elsif (/^--ql$/ || /^--quit-level$/) {
setQuitLevel(shift @ARGV);
}
elsif (/^--help$/) {
print($help);
exit 0;
}
elsif (/^--groupfile$/) {
$groupFile = shift @ARGV;
}
elsif (/^--definitionfile$/) {
$definitionFile = shift @ARGV;
}
elsif (/^--templatefile$/) {
$templateFile = shift @ARGV;
}
elsif (/^--outfile$/) {
$outFile = shift @ARGV;
}
else {
print "Unknown option $_.\n";
exit (1);
}
}
elsif (/^-$/) {
print "Unknown option '-'.\n";
exit (1);
}
elsif (/^-/) {
s/^\-//;
my $t = $_;
foreach (split //, $t) {
if (/g/) {
$groupFile = shift @ARGV;
}
elsif (/d/) {
$definitionFile = shift @ARGV;
}
elsif (/t/) {
$templateFile = shift @ARGV;
}
elsif (/o/) {
$outFile = shift @ARGV;
}
elsif (/s/) {
$outFile = "-";
}
else {
print "Unknown option '-$_'.\n";
exit (1);
}
}
}
}
require $definitionFile;
if (scalar(@GIDS) == 0) {
print("You have to specify a GID range in where you are placing your\n".
"group definitions.\n");
exit(0);
}
###############################################################################
############################ The actual program ###############################
# Changes:
# 2002-03-18 Ola Lundqvist <opal@debian.org>
# Wrote it.
# 2004-02-10 Ola Lundqvist <opal@debian.org>
# Rewrote some because changed style in emuga-usergen. Bugfix.
###############################################################################
my $grpcontent =
stripGroup($groupFile,@GIDS).
expandTemplate($templateFile,@GIDS);
open(G, ">$outFile");
print G $grpcontent;
close(G);
###############################################################################
# Name: stripGroup
# Argument: group file name
# GIDS definition to strip for.
# Return: a string with the group file content.
# Changes:
# 2002-03-18 Ola Lundqvist <opal@debian.org>
# Wrote it.
# 2004-02-02 Ola Lundqvist <opal@debian.org>
# Rewrote some because changed style in emuga-usergen.
###############################################################################
sub stripGroup($@) {
my ($groupFile, @gStrip) = @_;
my $ret = "";
open (G, $groupFile);
@groups = <G>;
close(G);
# Strip for all groups defined.
foreach my $s (@gStrip) {
@groups = grep(!/^[^:]+:[^:]+:$s:/, @groups);
}
foreach my $g (@groups) {
$ret = "$ret$g";
}
return $ret;
}
###############################################################################
# Name: expandTeplate
# Argument: template file name
# Return: a string with the template file content.
# Changes:
# 2002-03-18 Ola Lundqvist <opal@debian.org>
# Wrote it.
# 2004-02-02 Ola Lundqvist <opal@debian.org>
# Rewrote some because changed style in emuga-usergen.
# Removed need of opalmod.
# 2004-02-09 Ola Lundqvist <opal@debian.org>
# Added stripping of unwanted groups from template.
###############################################################################
sub expandTemplate($@) {
my ($templateFile, @gStrip) = @_;
my $ret = "";
open (T, $templateFile);
@template = grep(!/^\s*\#/,
grep (!/^\s*$/, <T>));
close(T);
my @su = ();
foreach my $s (@gStrip) {
if (length($s) > 0) {
push @su, grep(/^[^:]+:[^:]+:$s:/, @template);
}
}
@template = @su;
# Apply DEFINITION rules on each line.
foreach my $line (@template) {
my $oldline = "";
while ($oldline ne $line && $line =~ /\%\S+\%/) {
$oldline = $line;
# DEFINITION rules is applied here.
foreach my $k (keys %DEFINITIONS) {
$line =~ s/\%$k\%/$DEFINITIONS{$k}/g;
}
}
# Strip white-spaces.
$line =~ s/\s//g;
# Strip double user definitions.
my %users = ();
my $tmpline = $line;
$tmpline =~ s/^.*:([^:]*)$/$1/;
foreach my $u (split /,/, $tmpline) {
$users{$u} = 1;
}
$line =~ s/^(.*:)[^:]*$/$1/;
$line =~ s/,,+//g;
foreach my $u (keys %users) {
if ($u eq "") {
}
elsif (getpwnam $u) {
$line = "$line$u,";
}
else {
print "Unknown user $u.\n";
exit (1);
}
}
$line =~ s/,,+//g;
$line =~ s/,$//;
# Add to return string.
$ret = "$ret$line\n";
}
return $ret;
}
=head1 NAME
emuga-groupgen - Generate group information.
=head1 USAGE
emuga-groupgen [options]
=head1 DESCRIPTION
Emuga groupgen takes a template, definition and group file and generates
new group information based on that.
=head1 OPTIONS
--outfile file | -o file
The file to put the output
-s
Output to stdout.
--groupfile file | -g file
The original group file to generate data from.
--templatefile file | -t file
The template file to use for GIDS and some other things.
--definitionfile file | -d file
The definition file to use (for group definitions).
--dl n
Set the debug level.
--ql n
Set the quit level.
--help
Print this help message.
=head1 AUTHOR
Ola Lundqvist <opal@debian.org>
=head1 SEE ALSO
emuga-target(1)
=cut
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