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 -e $path;
        warn "WARNING: $path not directory" 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	525	mkdir $path unless -e $path;
54			warn "WARNING: $path not directory" unless -d $path;
55	dpavlin	156	$path .= '/' . $name;
56
57			if ( defined $value ) {
58	dpavlin	219	mkbasedir $path;
59	dpavlin	156	write_file $path, $value;
60			warn "update $path = $value";
61			} elsif ( ! -e $path && defined $default ) {
62	dpavlin	219	mkbasedir $path;
63	dpavlin	156	write_file $path, $default;
64			warn "default $path = $default";
65			$value = $default;
66	dpavlin	510	} elsif ( -l $path ) {
67			$value = readlink $path;
68	dpavlin	219	} elsif ( -f $path ) {
69			$value = read_file $path;
70	dpavlin	443	chomp $value;
71	dpavlin	219	} else {
72	dpavlin	220	warn "# $name missing $path\n" if $debug;
73	dpavlin	156	}
74			return $value;
75			}
76
77	dpavlin	305	sub all_conf {
78			my $ip = shift;
79			my $path = ip_path $ip \|\| return;
80			my $conf;
81	dpavlin	443	foreach my $file ( glob("$path/"), glob("$path//*") ) {
82	dpavlin	305	my $name = $file;
83	dpavlin	443	$name =~ s{^$path/+}{} \|\| die "can't remove $path from $name";
84	dpavlin	510	$conf->{ $name } =
85			-l $file ? readlink $file :
86			-f $file ? read_file $file :
87			'?';
88	dpavlin	305	}
89			return $conf;
90			}
91	dpavlin	200	sub next_ip($) {
92			my $mac = shift;
93	dpavlin	313	$mac = format::mac($mac);
94	dpavlin	168
95	dpavlin	409	if ( $server::new_clients > 0 ) {
96			warn "# clients left: ", --$server::new_clients;
97	dpavlin	391	} else {
98			warn "W: no new clients accepted";
99			return '0.0.0.0';
100			}
101
102	dpavlin	168	my $prefix = $server::ip;
103			$prefix =~ s{\.\d+$}{.};
104			my $addr = $server::ip_from \|\| die;
105			my $ip = $prefix . $addr;
106
107	dpavlin	330	while ( -e ip_path($ip) \|\| ping::host($ip) ) {
108	dpavlin	168	$ip = $prefix . $addr++;
109			die "all addresses allocated!" if $addr == $server::ip_to;
110			warn "skip $ip\n";
111			}
112
113			warn "next_ip $ip\n";
114	dpavlin	200
115	dpavlin	244	save_ip_mac( $ip, $mac );
116
117			return $ip;
118			}
119
120			sub save_ip_mac {
121			my ($ip,$mac) = @_;
122	dpavlin	313	$mac = format::mac($mac);
123	dpavlin	412	return if $mac eq '00:00:00:00:00:00' \|\| $ip eq '0.0.0.0';
124	dpavlin	244
125	dpavlin	254	mkdir ip_path($ip) unless -e ip_path($ip);
126	dpavlin	200
127	dpavlin	217	my $mac_path = mac_path($mac);
128	dpavlin	286	unlink $mac_path if -l $mac_path; # XXX audit?
129	dpavlin	217	symlink ip_path($ip), $mac_path;
130	dpavlin	323	write_file( ip_path($ip,'mac'), $mac );
131	dpavlin	168	}
132
133	dpavlin	200	sub ip_from_mac($) {
134	dpavlin	194	my $mac = shift;
135	dpavlin	313	$mac = format::mac($mac);
136	dpavlin	194
137	dpavlin	200	my $mac_path = mac_path $mac;
138	dpavlin	194	return unless -e $mac_path;
139
140			my $ip;
141
142			if ( -f $mac_path ) {
143			$ip = read_file $mac_path;
144			unlink $mac_path;
145	dpavlin	200	symlink ip_path($ip), $mac_path;
146	dpavlin	194	warn "I: upgrade to mac symlink $mac_path\n";
147			} elsif ( -l $mac_path ) {
148	dpavlin	219	$ip = conf_value $mac_path;
149	dpavlin	194	} else {
150			die "$mac_path not file or symlink";
151			}
152
153			return $ip;
154			}
155
156	dpavlin	200	sub mac_from_ip($) {
157			my $ip = shift;
158	dpavlin	219	conf_value ip_path($ip, 'mac');
159	dpavlin	200	}
160
161			sub change_ip($$) {
162			my ($old, $new) = @_;
163	dpavlin	323	return if $old eq $new;
164			my $mac = mac_from_ip($old) \|\| die "no mac for $old";
165	dpavlin	200	rename ip_path($old), ip_path($new);
166			unlink mac_path($mac);
167			symlink ip_path($new), mac_path($mac);
168	dpavlin	323	return $new;
169	dpavlin	200	}
170
171	dpavlin	322	sub all_ips {
172			sort { ip::to_int($a) cmp ip::to_int($b) }
173			map {
174			my $ip = $_;
175			$ip =~ s{^.+/ip/}{};
176	dpavlin	406	autocreate_params( $ip );
177	dpavlin	322	$ip;
178			} glob("$server::conf/ip/*")
179			}
180
181	dpavlin	323	sub remove {
182			my $ip = shift;
183			if ( my $mac = mac_from_ip $ip ) {
184			unlink "$server::conf/mac/$mac";
185			}
186	dpavlin	395	rmtree "$server::conf/ip/$ip";
187	dpavlin	323	}
188
189	dpavlin	329	sub arp_mac_dev {
190			my $arp = {
191			map {
192			my @c = split(/\s+/,$_);
193			if ( $#c == 5 ) {
194			client::save_ip_mac( $c[0], $c[3] );
195			( uc $c[3] => $c[5] )
196			} else {
197			}
198			} read_file('/proc/net/arp')
199			};
200
201			warn "# arp ",dump( $arp );
202			return $arp;
203			}
204
205	dpavlin	403	sub rebuild_mac_links {
206			warn "# rebuild mac links";
207			foreach my $ip ( all_ips ) {
208			my $mac = ip_path $ip, 'mac';
209			if ( -e $mac ) {
210			$mac = read_file $mac;
211	dpavlin	455	chomp $mac;
212	dpavlin	403	save_ip_mac( $ip, $mac );
213			warn "## $ip $mac\n";
214			}
215			}
216			}
217
218	dpavlin	406	sub autocreate_params {
219			my $ip = shift;
220			my $mac = mac_from_ip $ip;
221			if ( $mac =~ m{^AC:DE:48:00:00} && ! defined conf( $ip, 'kvm' ) ) {
222			conf( $ip, 'kvm', default => kvm::nr_from_mac( $mac ) );
223			warn "# create kvm for $ip";
224			}
225			}
226
227	dpavlin	156	1;