1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
package MDK::Common::System;
use MDK::Common::Math;
use MDK::Common::File;
use vars qw(@ISA %EXPORT_TAGS @EXPORT_OK %compat_arch $printable_chars $sizeof_int $bitof_int); #);
@ISA = qw(Exporter);
@EXPORT_OK = qw(%compat_arch $printable_chars $sizeof_int $bitof_int typeFromMagic list_passwd list_home list_skels syscall_ df sync psizeof availableMemory availableRamMB gettimeofday unix2dos getVarsFromSh setVarsInSh setVarsInShMode setVarsInCsh template2file template2userfile update_userkderc); #);
%EXPORT_TAGS = (all => [ @EXPORT_OK ]);
%compat_arch = ( #- compatibilty arch mapping.
'noarch' => undef,
'ia32' => 'noarch',
'i386' => 'ia32',
'i486' => 'i386',
'i586' => 'i486',
'i686' => 'i586',
'i786' => 'i686',
'k6' => 'i586',
'k7' => 'k6',
'k8' => 'k7',
'ia64' => 'noarch',
'ppc' => 'noarch',
'alpha' => 'noarch',
'sparc' => 'noarch',
'sparc32' => 'sparc',
'sparc64' => 'sparc32',
'ia64' => 'noarch',
);
$printable_chars = "\x20-\x7E";
$sizeof_int = psizeof("i");
$bitof_int = $sizeof_int * 8;
sub typeFromMagic {
my $f = shift;
local *F; sysopen F, $f, 0 or return;
my $tmp;
M: foreach (@_) {
my ($name, @l) = @$_;
while (@l) {
my ($offset, $signature) = splice(@l, 0, 2);
sysseek(F, $offset, 0) or next M;
sysread(F, $tmp, length $signature);
$tmp eq $signature or next M;
}
return $name;
}
undef;
}
sub list_passwd() {
my (@l, @e);
setpwent();
while (@e = getpwent()) { push @l, [ @e ] }
endpwent();
@l;
}
sub list_home() {
map { $_->[7] } grep { $_->[2] >= 500 } list_passwd();
}
sub list_skels {
my ($prefix, $suffix) = @_;
grep { -d $_ && -w $_ } map { "$prefix$_/$suffix" } '/etc/skel', '/root', list_home();
}
sub syscall_ {
my $f = shift;
require 'syscall.ph';
syscall(&{$common::{"SYS_$f"}}, @_) == 0;
}
#- return the size of the partition and its free space in KiB
sub df {
my ($mntpoint) = @_;
my ($blocksize, $size, $free);
my $buf = ' ' x 20000;
syscall_('statfs', $mntpoint, $buf) or return;
(undef, $blocksize, $size, $free, undef, undef) = unpack "L!6", $buf;
map { $_ * ($blocksize / 1024) } $size, $free;
}
sub sync { syscall_('sync') }
sub psizeof { length pack $_[0] }
sub availableMemory() { MDK::Common::Math::sum(map { /(\d+)/ } grep { /^(MemTotal|SwapTotal):/ } MDK::Common::File::cat_("/proc/meminfo")); }
sub availableRamMB() { 4 * MDK::Common::Math::round((-s '/proc/kcore') / 1024 / 1024 / 4); }
sub gettimeofday { my $t = pack "LL"; syscall_('gettimeofday', $t, 0) or die "gettimeofday failed: $!\n"; unpack("LL", $t) }
sub unix2dos { local $_ = $_[0]; s/\015$//mg; s/$/\015/mg; $_ }
sub getVarsFromSh {
my %l;
local *F; open F, $_[0] or return;
local $_;
while (<F>) {
s/#.*//; # remove comments
my ($v, $val, $val2) =
/^\s* # leading space
(\w+) = # variable
(
"([^"]*)" # double-quoted text
| '([^']*)' # single-quoted text
| [^'"\s]+ # normal text
)
\s*$ # end of line
/x or next;
$l{$v} = defined $val2 ? $val2 : $val;
}
%l;
}
sub setVarsInSh {
my ($file, $l, @fields) = @_;
setVarsInShMode($file, 0777 ^ umask(), $l, @fields);
}
sub setVarsInShMode {
my ($file, $mod, $l, @fields) = @_;
@fields = keys %$l unless @fields;
local *F;
open F, "> $file" or die "cannot create config file $file";
chmod $mod, $file;
$l->{$_} and print F "$_=$l->{$_}\n" foreach @fields;
}
sub setVarsInCsh {
my ($file, $l, @fields) = @_;
@fields = keys %$l unless @fields;
local *F;
open F, "> $_[0]" or die "cannot create config file $file";
$l->{$_} and print F "setenv $_ $l->{$_}\n" foreach @fields;
}
sub template2file {
my ($in, $out, %toreplace) = @_;
output $out, map { s/@@@(.*?)@@@/$toreplace{$1}/g; $_ } MDK::Common::File::cat_($in);
}
sub template2userfile {
my ($prefix, $in, $out_rel, $force, %toreplace) = @_;
foreach (list_skels($prefix, $out_rel)) {
-d MDK::Common::File::dirname($_) or !-e $_ or $force or next;
template2file($in, $_, %toreplace);
m|/home/(.+?)/| and chown(getpwnam($1), getgrnam($1), $_);
}
}
sub update_userkderc {
my ($file, $category, %subst) = @_;
output $file,
(map {
my $l = $_;
s/^\s*//;
if (my $i = /^\[$category\]/i ... /^\[/) {
if ($i =~ /E/) { #- for last line of category
$l = join('', map_each { "$::a=$::b\n" } %subst) . $l;
%subst = ();
} elsif (/^(\w*?)=/) {
if (my $e = delete $subst{lc($1)}) {
$l = "$1=$e\n";
}
}
}
$l;
} MDK::Common::File::cat_($file)),
(%subst && "[$category]\n", map_each { "$::a=$::b\n" } %subst); #- if category has not been found above.
}
1;
|
