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#
# Module: ConfigMgmt.pm
#
# **** License ****
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2007-2009 Vyatta, Inc.
# All Rights Reserved.
#
# Author: Stig Thormodsrud
# Date: October 2010
# Description: Common config-mgmt functions
#
# **** End License ****
#
package Vyatta::ConfigMgmt;
use strict;
use warnings;
our @EXPORT = qw(cm_commit_add_log cm_commit_get_log cm_get_archive_dir
cm_get_lr_conf_file cm_get_lr_state_file
cm_get_commit_hook_dir cm_write_file cm_read_file
cm_commit_get_file cm_commit_get_file_name
cm_get_num_revs cm_get_last_commit_file
cm_get_last_push_file);
use base qw(Exporter);
use Vyatta::Config;
use Vyatta::Interface;
use Vyatta::Misc;
use POSIX;
use IO::Zlib;
my $commit_hook_dir = '/etc/commit/';
my $config_dir = '/opt/vyatta/etc/config';
my $archive_dir = "$config_dir/archive";
my $config_file = "$config_dir/config.boot";
my $lr_conf_file = "$archive_dir/lr.conf";
my $lr_state_file = "$archive_dir/lr.state";
my $commit_log_file = "$archive_dir/commits";
my $last_commit_file = "$archive_dir/config.boot";
my $last_push_file = "$archive_dir/config.boot-push";
sub cm_get_commit_hook_dir {
return $commit_hook_dir;
}
sub cm_get_archive_dir {
return $archive_dir;
}
sub cm_get_lr_conf_file {
return $lr_conf_file;
}
sub cm_get_lr_state_file {
return $lr_state_file;
}
sub cm_get_last_commit_file {
return $last_commit_file;
}
sub cm_get_last_push_file {
return $last_push_file;
}
sub cm_read_file {
my ($file) = @_;
my @lines;
if ( -e $file) {
open(my $FILE, '<', $file) or die "Error: read $!";
@lines = <$FILE>;
close($FILE);
chomp @lines;
}
return @lines;
}
sub cm_write_file {
my ($file, $data) = @_;
open(my $fh, '>', $file) || die "Couldn't open $file - $!";
print $fh $data;
close $fh;
return 1;
}
sub cm_get_max_revs {
my $config = new Vyatta::Config;
$config->setLevel('system config-mgmt');
my $revs = $config->returnOrigValue('commit-revisions');
return $revs;
}
sub cm_get_num_revs {
my @lines = cm_read_file($commit_log_file);
my $num_revs = scalar(@lines);
$num_revs-- if $num_revs > 0; # rev files start at 0
return $num_revs;
}
sub cm_commit_add_log {
my ($user, $via, $comment) = @_;
my $time = time();
if ($comment =~ /\|/) {
print "before [$comment]\n";
$comment =~ s/\|/\%\%/g;
print "after [$comment]\n";
}
my $new_line = "|$time|$user|$via|$comment|";
my @lines = cm_read_file($commit_log_file);
my $revs = cm_get_max_revs();
unshift(@lines, $new_line); # head push()
if (defined $revs and scalar(@lines) > $revs) {
$#lines = $revs-1;
}
my $log = join("\n", @lines);
cm_write_file($commit_log_file, $log);
}
sub cm_commit_get_log {
my @lines = cm_read_file($commit_log_file);
my @commit_log = ();
my $count = 0;
foreach my $line (@lines) {
if ($line !~ /^\|(.*)\|$/) {
print "Invalid log format [$line]\n";
next;
}
$line = $1;
my ($time, $user, $via, $comment) = split(/\|/, $line);
my $time_str = strftime("%Y-%m-%d %H:%M:%S", localtime($time));
$comment =~ s/\%\%/\|/g;
my $new_line = sprintf("%-2s %s by %s via %s\n",
$count, $time_str, $user, $via);
push @commit_log, $new_line;
if (defined $comment and $comment ne '' and $comment ne 'commit') {
push @commit_log, " $comment\n"
}
$count++;
}
return @commit_log;
}
sub cm_commit_get_file_name {
my ($revnum) = @_;
my $filename = $archive_dir . "/config.boot." . $revnum . ".gz";
return $filename;
}
sub cm_commit_get_file {
my ($revnum) = @_;
my $max_revs = cm_get_max_revs();
if ($revnum > $max_revs) {
print "Error: Invalid config revision number\n";
exit 1;
}
my $filename = cm_commit_get_file_name($revnum);
die "File [$filename] not found." if ! -e $filename;
my $fh = new IO::Zlib;
$fh->open($filename, "rb") or die "Error: read $!";
my @lines = <$fh>;
$fh->close;
return join('', @lines);
}
1;
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