summaryrefslogtreecommitdiffstats
path: root/lib/Sbuild/AspcudResolver.pm
blob: b86db2913ee67b61e134c6e6dbd2c7c55dbcb3d6 (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
# ResolverBase.pm: build library for sbuild
# Copyright © 2005      Ryan Murray <rmurray@debian.org>
# Copyright © 2005-2008 Roger Leigh <rleigh@debian.org>
# Copyright © 2008      Simon McVittie <smcv@debian.org>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see
# <http://www.gnu.org/licenses/>.
#
#######################################################################

package Sbuild::AspcudResolver;

use strict;
use warnings;

use Sbuild::Base;
use Sbuild::ResolverBase;

BEGIN {
    use Exporter ();
    our (@ISA, @EXPORT);

    @ISA = qw(Exporter Sbuild::ResolverBase);

    @EXPORT = qw();
}

sub new {
    my $class = shift;
    my $conf = shift;
    my $session = shift;
    my $host = shift;

    my $self = $class->SUPER::new($conf, $session, $host);
    bless($self, $class);

    return $self;
}

sub install_deps {
    my $self = shift;
    my $name = shift;
    my @pkgs = @_;

    my $status = 0;
    my $session = $self->get('Session');
    my $dummy_pkg_name = $self->get_sbuild_dummy_pkg_name($name);

    # Call functions to setup an archive to install dummy package.
    $self->log_subsubsection("Setup apt archive");

    if (!$self->setup_apt_archive($dummy_pkg_name, @pkgs)) {
	$self->log_error("Setting up apt archive failed\n");
	return 0;
    }

    if (!$self->update_archive()) {
	$self->log_error("Updating apt archive failed\n");
	return 0;
    }

    $self->log_subsection("Install $name build dependencies (aspcud-based resolver)");
    #install aspcud first:
    my (@aspcud_installed_packages, @aspcud_removed_packages);
    if (!$self->run_apt('-y', \@aspcud_installed_packages, \@aspcud_removed_packages, 'install', 'apt-cudf', 'aspcud')) {
	$self->log_warning('Could not install aspcud!');
	goto cleanup;
    }
    $self->set_installed(@aspcud_installed_packages);
    $self->set_removed(@aspcud_removed_packages);

    # Install the dummy package
    my (@instd, @rmvd);
    $self->log("Installing build dependencies\n");
    my @apt_args = ("-yf", \@instd, \@rmvd);
    push @apt_args, 'install', $dummy_pkg_name;

    push @apt_args, '--solver', 'aspcud',
	'-o', 'APT::Solver::Strict-Pinning=false',
	'-o', 'APT::Solver::aspcud::Preferences='.$self->get_conf('ASPCUD_CRITERIA');

    if (!$self->run_apt(@apt_args)) {
	$self->log("Package installation failed\n");
	if (defined ($self->get('Session')->get('Session Purged')) &&
	    $self->get('Session')->get('Session Purged') == 1) {
	    $self->log("Not removing build depends: cloned chroot in use\n");
	} else {
	    $self->set_installed(@instd);
	    $self->set_removed(@rmvd);
	    goto package_cleanup;
	}
	return 0;
    }
    $self->set_installed(@instd);
    $self->set_removed(@rmvd);
    $status = 1;

  package_cleanup:
    if ($status == 0) {
	if (defined ($session->get('Session Purged')) &&
	    $session->get('Session Purged') == 1) {
	    $self->log("Not removing installed packages: cloned chroot in use\n");
	} else {
	    $self->uninstall_deps();
	}
    }

  cleanup:
    return $status;
}

sub purge_extra_packages {
    my $self = shift;
    my $name = shift;

    my $dummy_pkg_name = $self->get_sbuild_dummy_pkg_name($name);

    my $session = $self->get('Session');

    # we retrieve the list of installed Essential:yes packages because these
    # must not be removed
    my $pipe = $session->pipe_command({
	    COMMAND => [ 'dpkg-query', '--showformat', '${Essential} ${Package}\\n', '--show' ],
	    USER => $self->get_conf('BUILD_USER')
	});
    if (!$pipe) {
	$self->log_error("unable to execute dpkg-query\n");
	return 0;
    }
    my @essential;
    while (my $line = <$pipe>) {
	chomp $line;
	if ($line !~ /^yes ([a-zA-Z0-9][a-zA-Z0-9+.-]*)$/) {
	    next;
	}
	push @essential, "$1+";
    }
    close $pipe;
    if (scalar @essential == 0) {
	$self->log_error("no essential packages found \n");
	return 0;
    }
    # the /dev/null prevents acpcud from even looking at external repositories, so all it can do is remove stuff
    # it is also much faster that way
    my (@instd, @rmvd);
    $self->run_apt("-yf", \@instd, \@rmvd, 'autoremove',
	@essential, $self->get_sbuild_dummy_pkg_name('core') . '+', "$dummy_pkg_name+",
	'--solver', 'aspcud',
	'-o', 'APT::Solver::aspcud::Preferences=+removed',
	'-o', 'Dir::State::Lists=/dev/null',
	'--allow-remove-essential');
}

1;