summaryrefslogtreecommitdiffstats
path: root/hosts/jenkins/usr/local/bin/dsa-check-packages
blob: 3ea088d9bd46c16a13948fc38bb5ca26d5222d96 (plain)
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
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
#!/usr/bin/perl

# dsa-check-packages

# checks for obsolete/local and upgradeable packages.
#
# packages for the obsolete/local check can be ignored, by
# listing their full name in /etc/nagios/obsolete-packages-ignore
# or by having a regex (starting a line with "/") that matches
# the packagename in said file.
#
# Takes one optional argument, the location of the ignore file.


# Copyright (C) 2008, 2009 Peter Palfrader <peter@palfrader.org>
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be
# included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
# EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
# MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

use strict;
use warnings;
use English;

my $IGNORE = "/etc/nagios/obsolete-packages-ignore";
my $IGNORED = "/etc/nagios/obsolete-packages-ignore.d";

my %CODE = (
	'OK'            => 0,
	'WARNING'       => 1,
	'CRITICAL'      => 2,
	'UNKNOWN'       => 3
);
my $EXITCODE = 'OK';
sub record($) {
	my ($newexit) = @_;
	die "code $newexit not defined\n" unless defined $CODE{$newexit};

	if ($CODE{$newexit} > $CODE{$EXITCODE}) {
		$EXITCODE = $newexit;
	};
}



sub get_packages {
	$ENV{'COLUMNS'} = 1000;
	$ENV{'LC_ALL'} = 'C';
	open(F, "dpkg -l|") or die ("Cannot run dpkg: $!\n");
	my @lines = <F>;
	close(F);
	chomp(@lines);

	my $line;
	my $has_arch = 0;
	while (defined($line = shift @lines) && ($line !~ /\+\+\+/)) {
		if ($line =~ /Architecture/) { $has_arch = 1; }
	}

	my %pkgs;
	for $line (@lines) {
		my ($state, $pkg, $version, $arch, undef) = split(/  */, $line);
		$arch = '' unless $has_arch;
		$pkgs{$state}{$pkg} = { 'installed' => $version, arch => $arch }
	}

	my $installed = $pkgs{'ii'};
	delete $pkgs{'ii'};

	my @installed_packages = keys(%$installed);
	my @cmd = ("apt-cache", "policy", @installed_packages);

	open my $olderr, ">&STDERR"   or die "Can't dup STDERR: $!";
	open     STDERR, ">/dev/null" or die "Can't dup STDOUT: $!";
	open (F, "-|", @cmd) or die ("Cannot run apt-cache policy: $!\n");
	@lines = <F>;
	close(F);
	open STDERR, ">&", $olderr  or die "Can't dup OLDERR: $!";
	chomp(@lines);

	my $pkgname = undef;
	while (defined($line = shift @lines)) {
		if ($line =~ /^([^ ]*):$/) {
			# when we have multi-arch capable fu, we require that
			# apt-cache policy output is in the same order as its
			# arguments.
			#
			# We needs thi, because the output block in apt-cache
			# policy does not show the arch:
			#
			# | weasel@stanley:~$ apt-cache policy libedit2:amd64
			# | libedit2:
			# |   Installed: 2.11-20080614-5
			# |   Candidate: 2.11-20080614-5
			#
			# We replace the package name in the output with the
			# one we asked for ($pkg:$arch) - but to match this up
			# sanely we need the order to be correct.
			#
			# For squeeze systems (no m-a), apt-cache policy output
			# is all different.
			$pkgname = $1;
			if ($has_arch) {
				my $from_list = shift @installed_packages;
				next if ($pkgname eq $from_list); # no :$arch in pkgname we asked for

				my $ma_fix_pkgname = $pkgname.':'.$installed->{$from_list}->{'arch'};
				my $ma_fix_from_list = $from_list.':'.$installed->{$from_list}->{'arch'};

				if ($pkgname eq $ma_fix_from_list || # e.g. ia32-libs-i386.  dpkg -l: ia32-libs-i386, apt-cache policy: ia32-libs-i386:i386
				    $ma_fix_pkgname eq $from_list) {
					$pkgname = $from_list;
				} else {
					die "Unexpected order mismatch in apt-cache policy output (apt-cache policy name: $pkgname - dpkg -l name: $from_list)\n";
				}
			}
		} elsif ($line =~ /^ +Installed: (.*)$/) {
			# etch dpkg -l does not print epochs, so use this info, it's better
			$installed->{$pkgname}{'installed'} = $1;
		} elsif ($line =~ /^ +Candidate: (.*)$/) {
			$installed->{$pkgname}{'candidate'} = $1;
		} elsif ($line =~ /^ +\*\*\*/) {
			$line = shift @lines;
			my @l = split(/ +/, $line);
			$installed->{$pkgname}{'origin'} = $l[2];
		}
	}

	my (%current, %obsolete, %outofdate);
	for my $pkgname (keys %$installed) {
		my $pkg = $installed->{$pkgname};

		unless (defined($pkg->{'candidate'}) && defined($pkg->{'origin'})) {
			$obsolete{$pkgname} = $pkg;
			next;
		}

		if ($pkg->{'candidate'} ne $pkg->{'installed'}) {
			$outofdate{$pkgname} = $pkg;
			next;
		};
		if ($pkg->{'origin'} eq '/var/lib/dpkg/status') {
			$obsolete{$pkgname} = $pkg;
			next;
		}
		$current{$pkgname} = $pkg;
	}

	$pkgs{'current'} = \%current;
	$pkgs{'outofdate'} = \%outofdate;
	$pkgs{'obsolete'} = \%obsolete;
	return \%pkgs;
}

sub load_ignores {
	my ($ignorefiles, $require_file) = @_;

	my @ignores;

	for my $ignoreitem (@$ignorefiles) {
		next if (!$require_file and ! -e $ignoreitem);

		my @filestoopen;
		if (-d $ignoreitem) {
			opendir(DIR, $ignoreitem) or die ("Cannot open dir $ignoreitem: $!\n");
			@filestoopen = readdir(DIR);
			closedir(DIR);

			@filestoopen = grep { -f ($ignoreitem.'/'.$_) } @filestoopen;
			@filestoopen = grep { /^([a-z0-9_.-]+)+[a-z0-9]+$/i } @filestoopen;
			@filestoopen = grep { !/dpkg-(old|dist|new|tmp)$/ } @filestoopen;
			@filestoopen = map { ($ignoreitem.'/'.$_) } @filestoopen;
		} else {
			push @filestoopen, $ignoreitem;
		}

		for my $f (@filestoopen) {
			open (F, "< $f") or die ("Cannot open $f: $!\n");
			push @ignores, <F>;
			close F;
		}
	}
	chomp(@ignores);
	return \@ignores;
}

sub check_ignore {
	my ($pkg, $ignores) = @_;

	my $ignore_this = 0;
	for my $ignore (@$ignores) {
		my $ig = $ignore;
		return 1 if ($ig eq $pkg);
		if (substr($ig,0,1) eq '/') {
			substr($ig, 0, 1, '');
			$ig =~ s,/$,,;
			return 1 if ($pkg =~ /$ig/);
		}
	}
	return 0
}

sub filter_ignored {
	my ($packages, $ignores) = @_;

	my $obs = $packages->{'obsolete'};

	my (%ignored, %bad);
	for my $pkg (keys %$obs) {
		if (check_ignore($pkg, $ignores)) {
			$ignored{$pkg} = $obs->{$pkg};
		} else {
			$bad{$pkg} = $obs->{$pkg};
		};
	}
	delete $packages->{'obsolete'};
	$packages->{'obsolete'} = \%bad;
	$packages->{'obsolete-ignored'} = \%ignored;
};

sub usage {
	my ($fd, $exit) = @_;
	print $fd "Usage: $PROGRAM_NAME [<ignorefile|dir> [<ignorefile|dir> ...]]\n";
	exit $exit;
}

my $ignorefiles = [$IGNORE, $IGNORED];
my $ignorefile_userset = 0;
if (@ARGV >= 1) {
	usage(\*STDOUT, 0) if ($ARGV[0] eq "-h");
	usage(\*STDOUT, 0) if ($ARGV[0] eq "--help");
	$ignorefile_userset = 1;
	$ignorefiles = \@ARGV;
};

my $ignores = load_ignores($ignorefiles, $ignorefile_userset);
my $packages = get_packages();

filter_ignored($packages, $ignores);



my @reportform = (
	{ 'key' => 'obsolete',
	  'listpackages' => 1,
	  'long' => "%d local or obsolete packages: %s",
	  'short' => "%d obs/loc",
	  'perf' => "obs_loc=%d;1;5;0",
	  'status' => 'WARNING' },
	{ 'key' => 'outofdate',
	  'listpackages' => 1,
	  'long' => "%d out of date packages: %s",
	  'short' => "%d updates",
	  'perf' => "outdated=%d;1;5;0",
	  'status' => 'WARNING' },
	{ 'key' => 'current',
	  'listpackages' => 0,
	  'long' => "%d packages current.",
	  'short' => "%d ok",
	  'perf' => "current=%d;;;0",
	  'status' => 'OK' },
	{ 'key' => 'obsolete-ignored',
	  'listpackages' => 1,
	  'long' => "%d whitelisted local or obsolete packages: %s",
	  'short' => "%d obs/loc(ignored)",
	  'perf' => "obs_ign=%d;;;0",
	  'status' => 'OK' },
	{ 'key' => 'rc',
	  'listpackages' => 1,
	  'long' => "%d packages removed but not purged: %s",
	  'short' => "%d rc",
	  'perf' => "rm_unprg=%d;;;0",
	  'status' => 'OK' },
	{ 'key' => 'hi',
	  'listpackages' => 1,
	  'long' => "%d packages on hold: %s",
	  'short' => "%d hi",
	  'perf' => "hold=%d;;;0",
	  'status' => 'OK' },
	{ 'key' => 'pc',
	  'listpackages' => 1,
	  'long' => "%d packages requested to be purged but conffiles still installed: %s",
	  'short' => "%d pc",
	  'perf' => "prg_conf=%d;1;;0",
	  'status' => 'WARNING' },
	);

my @longout;
my @perfout;
my @shortout;
for my $form (@reportform) {
	my $pkgs = $packages->{$form->{'key'}};
	delete $packages->{$form->{'key'}};
	my $num = scalar keys %$pkgs;
	push @perfout, sprintf($form->{'perf'}, $num);
	next unless ($num > 0);
	if ($form->{'listpackages'}) {
		my $list = join(", ", keys %$pkgs);
		push @longout, sprintf($form->{'long'}, $num, $list);
	} else {
		push @longout, sprintf($form->{'long'}, $num);
	};
	push @shortout, sprintf($form->{'short'}, $num);
	record($form->{'status'});
};
if (scalar keys %$packages) {
	record('WARNING');
	unshift @shortout, "unk: ".join(", ", keys %$packages);
	for my $status (sort {$b cmp $a} keys %$packages) {
		my $pkgs = $packages->{$status};
		my $list = join(", ", keys %$pkgs);
		unshift @longout, "Unknown package status $status: $list";
	};
}

my $shortout = $EXITCODE.": ".join(", ", @shortout);
my $longout = join("\n", @longout);
my $perfout = "|".join(" ", @perfout);

print $shortout,"\n";
print $longout,"\n";
print $perfout,"\n";

exit $CODE{$EXITCODE};