lib/PXElator/client.pm

package client;

use warnings;
use strict;
use autodie;

use File::Slurp;
use Data::Dump qw/dump/;
use File::Path;

use server;
use format;
use ip;
use ping;
use kvm;

our $debug = $server::debug;

sub mkbasedir {
        my $path = shift;
        $path =~ s{(^.*)/[^/]+$}{$1};
        mkdir $path unless -d $path;
        return $path;
}

sub mac_path { $server::conf . '/mac/' . $_[0] }
sub  ip_path { $server::conf . '/ip/'  . join('/', @_) }
sub conf_value {
        my $path = shift;
        my $value;
        if ( -l $path ) {
                $value = readlink $path;
                $value =~ s{.*/([^/]+)$}{$1};
        } elsif ( -f $path ) {
                $value = read_file $path;
        } else {
                warn "W: $path not file or symlink\n";
        }
        return $value;
}

sub conf {
        my $ip  = shift;
        my $name = shift;
        my ( $default, $value );
        if ( $#_ == 0 ) {
                $value = shift;
        } elsif ( $#_ == 1 && $_[0] eq 'default' ) {
                $default = $_[1]
        }

        my $path = ip_path $ip;
        mkdir $path unless -d $path;
        $path .= '/' . $name;

        if ( defined $value ) {
                mkbasedir  $path;
                write_file $path, $value;
                warn "update $path = $value";
        } elsif ( ! -e $path && defined $default ) {
                mkbasedir  $path;
                write_file $path, $default;
                warn "default $path = $default";
                $value = $default;
        } elsif ( -l $path ) {
                $value = readlink $path;
        } elsif ( -f $path ) {
                $value = read_file $path;
                chomp $value;
        } else {
                warn "# $name missing $path\n" if $debug;
        }
        return $value;
}

sub all_conf {
        my $ip = shift;
        my $path = ip_path $ip || return;
        my $conf;
        foreach my $file ( glob("$path/*"), glob("$path/*/*") ) {
                my $name = $file;
                $name =~ s{^$path/+}{} || die "can't remove $path from $name";
                $conf->{ $name } =
                        -l $file ? readlink  $file :
                        -f $file ? read_file $file :
                        '?';
        }
        return $conf;
}
sub next_ip($) {
        my $mac = shift;
        $mac = format::mac($mac);

        if ( $server::new_clients > 0 ) {
                warn "# clients left: ", --$server::new_clients;
        } else {
                warn "W: no new clients accepted";
                return '0.0.0.0';
        }

        my $prefix = $server::ip;
        $prefix =~ s{\.\d+$}{.};
        my $addr = $server::ip_from || die;
        my $ip = $prefix . $addr;

        while ( -e ip_path($ip) || ping::host($ip) ) {
                $ip = $prefix . $addr++;
                die "all addresses allocated!" if $addr == $server::ip_to;
                warn "skip $ip\n";
        }

        warn "next_ip $ip\n";

        save_ip_mac( $ip, $mac );

        return $ip;
}

sub save_ip_mac {
        my ($ip,$mac) = @_;
        $mac = format::mac($mac);
        return if $mac eq '00:00:00:00:00:00' || $ip eq '0.0.0.0';

        mkdir ip_path($ip) unless -e ip_path($ip);

        my $mac_path = mac_path($mac);
        unlink $mac_path if -l $mac_path;       # XXX audit?
        symlink ip_path($ip), $mac_path;
        write_file( ip_path($ip,'mac'), $mac );
}

sub ip_from_mac($) {
        my $mac = shift;
        $mac = format::mac($mac);

        my $mac_path = mac_path $mac;
        return unless -e $mac_path;

        my $ip;

        if ( -f $mac_path ) {
                $ip = read_file $mac_path;
                unlink $mac_path;
                symlink ip_path($ip), $mac_path;
                warn "I: upgrade to mac symlink $mac_path\n";
        } elsif ( -l $mac_path ) {
                $ip = conf_value $mac_path;
        } else {
                die "$mac_path not file or symlink";
        }

        return $ip;
}

sub mac_from_ip($) {
        my $ip = shift;
        conf_value ip_path($ip, 'mac');
}

sub change_ip($$) {
        my ($old, $new) = @_;
        return if $old eq $new;
        my $mac = mac_from_ip($old) || die "no mac for $old";
        rename ip_path($old), ip_path($new);
        unlink mac_path($mac);
        symlink ip_path($new), mac_path($mac);
        return $new;
}

sub all_ips {
        sort { ip::to_int($a) cmp ip::to_int($b) }
        map {
                my $ip = $_;
                $ip =~ s{^.+/ip/}{};
                autocreate_params( $ip );
                $ip;
        } glob("$server::conf/ip/*") 
}

sub remove {
        my $ip = shift;
        if ( my $mac = mac_from_ip $ip ) {
                unlink "$server::conf/mac/$mac";
        }
        rmtree "$server::conf/ip/$ip";
}

sub arp_mac_dev {
        my $arp = {
                map {
                        my @c = split(/\s+/,$_);
                        if ( $#c == 5 ) {
                                client::save_ip_mac( $c[0], $c[3] );
                                ( uc $c[3] => $c[5] )
                        } else {
                        }
                } read_file('/proc/net/arp')
        };

        warn "# arp ",dump( $arp );
        return $arp;
}

sub rebuild_mac_links {
        warn "# rebuild mac links";
        foreach my $ip ( all_ips ) {
                my $mac = ip_path $ip, 'mac';
                if ( -e $mac ) {
                        $mac = read_file $mac;
                        chomp $mac;
                        save_ip_mac( $ip, $mac );
                        warn "## $ip $mac\n";
                }
        }
}

sub autocreate_params {
        my $ip = shift;
        my $mac = mac_from_ip $ip;
        if ( $mac =~ m{^AC:DE:48:00:00} && ! defined conf( $ip, 'kvm' ) ) {
                conf( $ip, 'kvm', default => kvm::nr_from_mac( $mac ) );
                warn "# create kvm for $ip";
        }
}

1;
1	dpavlin	156	package client;
2
3			use warnings;
4			use strict;
5			use autodie;
6
7			use File::Slurp;
8	dpavlin	329	use Data::Dump qw/dump/;
9	dpavlin	395	use File::Path;
10	dpavlin	219
11			use server;
12	dpavlin	208	use format;
13	dpavlin	322	use ip;
14	dpavlin	330	use ping;
15	dpavlin	406	use kvm;
16	dpavlin	156
17	dpavlin	220	our $debug = $server::debug;
18
19	dpavlin	219	sub mkbasedir {
20			my $path = shift;
21			$path =~ s{(^.*)/[^/]+$}{$1};
22			mkdir $path unless -d $path;
23			return $path;
24			}
25
26	dpavlin	200	sub mac_path { $server::conf . '/mac/' . $_[0] }
27			sub ip_path { $server::conf . '/ip/' . join('/', @_) }
28	dpavlin	219	sub conf_value {
29			my $path = shift;
30			my $value;
31			if ( -l $path ) {
32			$value = readlink $path;
33			$value =~ s{.*/([^/]+)$}{$1};
34			} elsif ( -f $path ) {
35			$value = read_file $path;
36			} else {
37	dpavlin	244	warn "W: $path not file or symlink\n";
38	dpavlin	219	}
39			return $value;
40			}
41	dpavlin	200
42	dpavlin	156	sub conf {
43			my $ip = shift;
44			my $name = shift;
45			my ( $default, $value );
46			if ( $#_ == 0 ) {
47			$value = shift;
48			} elsif ( $#_ == 1 && $_[0] eq 'default' ) {
49			$default = $_[1]
50			}
51
52	dpavlin	200	my $path = ip_path $ip;
53	dpavlin	156	mkdir $path unless -d $path;
54			$path .= '/' . $name;
55
56			if ( defined $value ) {
57	dpavlin	219	mkbasedir $path;
58	dpavlin	156	write_file $path, $value;
59			warn "update $path = $value";
60			} elsif ( ! -e $path && defined $default ) {
61	dpavlin	219	mkbasedir $path;
62	dpavlin	156	write_file $path, $default;
63			warn "default $path = $default";
64			$value = $default;
65	dpavlin	510	} elsif ( -l $path ) {
66			$value = readlink $path;
67	dpavlin	219	} elsif ( -f $path ) {
68			$value = read_file $path;
69	dpavlin	443	chomp $value;
70	dpavlin	219	} else {
71	dpavlin	220	warn "# $name missing $path\n" if $debug;
72	dpavlin	156	}
73			return $value;
74			}
75
76	dpavlin	305	sub all_conf {
77			my $ip = shift;
78			my $path = ip_path $ip \|\| return;
79			my $conf;
80	dpavlin	443	foreach my $file ( glob("$path/"), glob("$path//*") ) {
81	dpavlin	305	my $name = $file;
82	dpavlin	443	$name =~ s{^$path/+}{} \|\| die "can't remove $path from $name";
83	dpavlin	510	$conf->{ $name } =
84			-l $file ? readlink $file :
85			-f $file ? read_file $file :
86			'?';
87	dpavlin	305	}
88			return $conf;
89			}
90	dpavlin	200	sub next_ip($) {
91			my $mac = shift;
92	dpavlin	313	$mac = format::mac($mac);
93	dpavlin	168
94	dpavlin	409	if ( $server::new_clients > 0 ) {
95			warn "# clients left: ", --$server::new_clients;
96	dpavlin	391	} else {
97			warn "W: no new clients accepted";
98			return '0.0.0.0';
99			}
100
101	dpavlin	168	my $prefix = $server::ip;
102			$prefix =~ s{\.\d+$}{.};
103			my $addr = $server::ip_from \|\| die;
104			my $ip = $prefix . $addr;
105
106	dpavlin	330	while ( -e ip_path($ip) \|\| ping::host($ip) ) {
107	dpavlin	168	$ip = $prefix . $addr++;
108			die "all addresses allocated!" if $addr == $server::ip_to;
109			warn "skip $ip\n";
110			}
111
112			warn "next_ip $ip\n";
113	dpavlin	200
114	dpavlin	244	save_ip_mac( $ip, $mac );
115
116			return $ip;
117			}
118
119			sub save_ip_mac {
120			my ($ip,$mac) = @_;
121	dpavlin	313	$mac = format::mac($mac);
122	dpavlin	412	return if $mac eq '00:00:00:00:00:00' \|\| $ip eq '0.0.0.0';
123	dpavlin	244
124	dpavlin	254	mkdir ip_path($ip) unless -e ip_path($ip);
125	dpavlin	200
126	dpavlin	217	my $mac_path = mac_path($mac);
127	dpavlin	286	unlink $mac_path if -l $mac_path; # XXX audit?
128	dpavlin	217	symlink ip_path($ip), $mac_path;
129	dpavlin	323	write_file( ip_path($ip,'mac'), $mac );
130	dpavlin	168	}
131
132	dpavlin	200	sub ip_from_mac($) {
133	dpavlin	194	my $mac = shift;
134	dpavlin	313	$mac = format::mac($mac);
135	dpavlin	194
136	dpavlin	200	my $mac_path = mac_path $mac;
137	dpavlin	194	return unless -e $mac_path;
138
139			my $ip;
140
141			if ( -f $mac_path ) {
142			$ip = read_file $mac_path;
143			unlink $mac_path;
144	dpavlin	200	symlink ip_path($ip), $mac_path;
145	dpavlin	194	warn "I: upgrade to mac symlink $mac_path\n";
146			} elsif ( -l $mac_path ) {
147	dpavlin	219	$ip = conf_value $mac_path;
148	dpavlin	194	} else {
149			die "$mac_path not file or symlink";
150			}
151
152			return $ip;
153			}
154
155	dpavlin	200	sub mac_from_ip($) {
156			my $ip = shift;
157	dpavlin	219	conf_value ip_path($ip, 'mac');
158	dpavlin	200	}
159
160			sub change_ip($$) {
161			my ($old, $new) = @_;
162	dpavlin	323	return if $old eq $new;
163			my $mac = mac_from_ip($old) \|\| die "no mac for $old";
164	dpavlin	200	rename ip_path($old), ip_path($new);
165			unlink mac_path($mac);
166			symlink ip_path($new), mac_path($mac);
167	dpavlin	323	return $new;
168	dpavlin	200	}
169
170	dpavlin	322	sub all_ips {
171			sort { ip::to_int($a) cmp ip::to_int($b) }
172			map {
173			my $ip = $_;
174			$ip =~ s{^.+/ip/}{};
175	dpavlin	406	autocreate_params( $ip );
176	dpavlin	322	$ip;
177			} glob("$server::conf/ip/*")
178			}
179
180	dpavlin	323	sub remove {
181			my $ip = shift;
182			if ( my $mac = mac_from_ip $ip ) {
183			unlink "$server::conf/mac/$mac";
184			}
185	dpavlin	395	rmtree "$server::conf/ip/$ip";
186	dpavlin	323	}
187
188	dpavlin	329	sub arp_mac_dev {
189			my $arp = {
190			map {
191			my @c = split(/\s+/,$_);
192			if ( $#c == 5 ) {
193			client::save_ip_mac( $c[0], $c[3] );
194			( uc $c[3] => $c[5] )
195			} else {
196			}
197			} read_file('/proc/net/arp')
198			};
199
200			warn "# arp ",dump( $arp );
201			return $arp;
202			}
203
204	dpavlin	403	sub rebuild_mac_links {
205			warn "# rebuild mac links";
206			foreach my $ip ( all_ips ) {
207			my $mac = ip_path $ip, 'mac';
208			if ( -e $mac ) {
209			$mac = read_file $mac;
210	dpavlin	455	chomp $mac;
211	dpavlin	403	save_ip_mac( $ip, $mac );
212			warn "## $ip $mac\n";
213			}
214			}
215			}
216
217	dpavlin	406	sub autocreate_params {
218			my $ip = shift;
219			my $mac = mac_from_ip $ip;
220			if ( $mac =~ m{^AC:DE:48:00:00} && ! defined conf( $ip, 'kvm' ) ) {
221			conf( $ip, 'kvm', default => kvm::nr_from_mac( $mac ) );
222			warn "# create kvm for $ip";
223			}
224			}
225
226	dpavlin	156	1;