/[pxelator]/lib/PXElator/client.pm
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Contents of /lib/PXElator/client.pm

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Revision 330 - (show annotations)
Fri Aug 28 22:29:08 2009 UTC (14 years, 7 months ago) by dpavlin
File size: 3580 byte(s)
added fping to all hosts
1 package client;
2
3 use warnings;
4 use strict;
5 use autodie;
6
7 use File::Slurp;
8 use Data::Dump qw/dump/;
9
10 use server;
11 use format;
12 use ip;
13 use ping;
14
15 our $debug = $server::debug;
16
17 sub mkbasedir {
18 my $path = shift;
19 $path =~ s{(^.*)/[^/]+$}{$1};
20 mkdir $path unless -d $path;
21 return $path;
22 }
23
24 sub mac_path { $server::conf . '/mac/' . $_[0] }
25 sub ip_path { $server::conf . '/ip/' . join('/', @_) }
26 sub conf_value {
27 my $path = shift;
28 my $value;
29 if ( -l $path ) {
30 $value = readlink $path;
31 $value =~ s{.*/([^/]+)$}{$1};
32 } elsif ( -f $path ) {
33 $value = read_file $path;
34 } else {
35 warn "W: $path not file or symlink\n";
36 }
37 return $value;
38 }
39
40 sub conf {
41 my $ip = shift;
42 my $name = shift;
43 my ( $default, $value );
44 if ( $#_ == 0 ) {
45 $value = shift;
46 } elsif ( $#_ == 1 && $_[0] eq 'default' ) {
47 $default = $_[1]
48 }
49
50 my $path = ip_path $ip;
51 mkdir $path unless -d $path;
52 $path .= '/' . $name;
53
54 if ( defined $value ) {
55 mkbasedir $path;
56 write_file $path, $value;
57 warn "update $path = $value";
58 } elsif ( ! -e $path && defined $default ) {
59 mkbasedir $path;
60 write_file $path, $default;
61 warn "default $path = $default";
62 $value = $default;
63 } elsif ( -f $path ) {
64 $value = read_file $path;
65 } else {
66 warn "# $name missing $path\n" if $debug;
67 }
68 return $value;
69 }
70
71 sub all_conf {
72 my $ip = shift;
73 my $path = ip_path $ip || return;
74 my $conf;
75 foreach my $file ( glob("$path/*") ) {
76 my $name = $file;
77 $name =~ s{^.+/([^/]+)$}{$1};
78 $conf->{ $name } = read_file $file;
79 }
80 return $conf;
81 }
82 sub next_ip($) {
83 my $mac = shift;
84 $mac = format::mac($mac);
85
86 my $prefix = $server::ip;
87 $prefix =~ s{\.\d+$}{.};
88 my $addr = $server::ip_from || die;
89 my $ip = $prefix . $addr;
90
91 while ( -e ip_path($ip) || ping::host($ip) ) {
92 $ip = $prefix . $addr++;
93 die "all addresses allocated!" if $addr == $server::ip_to;
94 warn "skip $ip\n";
95 }
96
97 warn "next_ip $ip\n";
98
99 save_ip_mac( $ip, $mac );
100
101 return $ip;
102 }
103
104 sub save_ip_mac {
105 my ($ip,$mac) = @_;
106 $mac = format::mac($mac);
107 return if $mac eq '00:00:00:00:00:00';
108
109 mkdir ip_path($ip) unless -e ip_path($ip);
110
111 my $mac_path = mac_path($mac);
112 unlink $mac_path if -l $mac_path; # XXX audit?
113 symlink ip_path($ip), $mac_path;
114 write_file( ip_path($ip,'mac'), $mac );
115 }
116
117 sub ip_from_mac($) {
118 my $mac = shift;
119 $mac = format::mac($mac);
120
121 my $mac_path = mac_path $mac;
122 return unless -e $mac_path;
123
124 my $ip;
125
126 if ( -f $mac_path ) {
127 $ip = read_file $mac_path;
128 unlink $mac_path;
129 symlink ip_path($ip), $mac_path;
130 warn "I: upgrade to mac symlink $mac_path\n";
131 } elsif ( -l $mac_path ) {
132 $ip = conf_value $mac_path;
133 } else {
134 die "$mac_path not file or symlink";
135 }
136
137 return $ip;
138 }
139
140 sub mac_from_ip($) {
141 my $ip = shift;
142 conf_value ip_path($ip, 'mac');
143 }
144
145 sub change_ip($$) {
146 my ($old, $new) = @_;
147 return if $old eq $new;
148 my $mac = mac_from_ip($old) || die "no mac for $old";
149 rename ip_path($old), ip_path($new);
150 unlink mac_path($mac);
151 symlink ip_path($new), mac_path($mac);
152 return $new;
153 }
154
155 sub all_ips {
156 sort { ip::to_int($a) cmp ip::to_int($b) }
157 map {
158 my $ip = $_;
159 $ip =~ s{^.+/ip/}{};
160 $ip;
161 } glob("$server::conf/ip/*")
162 }
163
164 sub remove {
165 my $ip = shift;
166 unlink $_ foreach grep { -e $_ } ( glob "$server::conf/ip/$ip/*" );
167 if ( my $mac = mac_from_ip $ip ) {
168 unlink "$server::conf/mac/$mac";
169 }
170 rmdir "$server::conf/ip/$ip";
171 }
172
173 sub arp_mac_dev {
174 my $arp = {
175 map {
176 my @c = split(/\s+/,$_);
177 if ( $#c == 5 ) {
178 client::save_ip_mac( $c[0], $c[3] );
179 ( uc $c[3] => $c[5] )
180 } else {
181 }
182 } read_file('/proc/net/arp')
183 };
184
185 warn "# arp ",dump( $arp );
186 return $arp;
187 }
188
189 1;

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