952 lines
27 KiB
Perl
952 lines
27 KiB
Perl
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#!/usr/bin/perl
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# Debian task selector, mark II.
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# Copyright 2004-2011 by Joey Hess <joeyh@debian.org>.
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# Licensed under the GPL, version 2 or higher.
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use 5.014;
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use Locale::gettext;
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use Getopt::Long;
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use warnings;
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use strict;
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textdomain('tasksel');
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my $debconf_helper="/usr/lib/tasksel/tasksel-debconf";
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my $testdir="/usr/lib/tasksel/tests";
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my $packagesdir="/usr/lib/tasksel/packages";
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my $descdir="/usr/share/tasksel/descs";
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my $localdescdir="/usr/local/share/tasksel/descs";
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my $statusfile="/var/lib/dpkg/status";
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my $infodir="/usr/lib/tasksel/info";
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# This boolean indicates whether we are in dry-run (no-do) mode. More
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# specifically, it disables the actual running of commands by the
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# &run() function.
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my $testmode=0;
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my $taskpackageprefix="task-";
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sub warning {
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print STDERR "tasksel: @_\n";
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}
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sub error {
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print STDERR "tasksel: @_\n";
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exit 1;
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}
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# my $statuscode = &run("ls", "-l", "/tmp");
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# => 0
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# Run a shell command except in test mode, and returns its exit code.
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# Prints the command in test mode. Parameters should be pre-split for
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# system.
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sub run {
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if ($testmode) {
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print join(" ", @_)."\n";
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return 0;
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}
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else {
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return system(@_) >> 8;
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}
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}
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# my @paths = &list_task_descs();
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# => ("/path/to/debian-tasks.desc", "/some/other/taskfile.desc")
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# Get the list of desc files.
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sub list_task_descs {
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# Setting DEBIAN_TASKS_ONLY is a way for the Debian installer
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# to tell tasksel to only use the Debian tasks (from
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# tasksel-data).
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if ($ENV{DEBIAN_TASKS_ONLY}) {
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return glob("$descdir/debian-tasks.desc");
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}
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else {
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return glob("$descdir/*.desc"), glob("$localdescdir/*.desc");
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}
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}
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# &read_task_desc("/path/to/taskfile.desc");
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# => (
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# {
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# task => "gnome-desktop",
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# parent => "desktop",
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# relevance => 1,
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# key => [task-gnome-desktop"],
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# section => "user",
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# test-default-desktop => "3 gnome",
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# sortkey => 1desktop-01
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# },
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# ...
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# )
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# Returns a list of hashes; hash values are arrays for multi-line fields.
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sub read_task_desc {
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my $desc=shift;
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# %tasks maps the name of each task (the Task: field) to its
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# %%data information (that maps each key to value(s), see the
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# %"while" loop below).
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my %tasks;
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open (DESC, "<$desc") || die "Could not open $desc for reading: $!";
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local $/="\n\n";
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while (defined($_ = <DESC>)) {
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# %data will contain the keys/values of the current
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# stanza.
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#
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# The keys are stored lowercase.
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#
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# A single-line value is stored as a scalar "line1"; a
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# multi-line value is stored as a ref to array
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# ["line1", "line2"].
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#
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# $data{relevance} is set to 5 if not otherwise
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# specified in the stanza.
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my %data;
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my @lines=split("\n");
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while (@lines) {
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my $line=shift(@lines);
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if ($line=~/^([^ ]+):(?: (.*))?/) {
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my ($key, $value)=($1, $2);
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$key=lc($key);
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if (@lines && $lines[0] =~ /^\s+/) {
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# multi-line field
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my @values;
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# Ignore the first line if it is empty.
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if (defined $value && length $value) {
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push @values, $value;
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}
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while (@lines && $lines[0] =~ /^\s+(.*)/) {
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push @values, $1;
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shift @lines;
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}
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$data{$key}=[@values];
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}
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else {
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$data{$key}=$value;
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}
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}
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else {
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warning "$desc: in stanza $.: warning: parse error, ignoring line: $line";
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}
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}
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$data{relevance}=5 unless exists $data{relevance};
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if (exists $data{task}) {
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$tasks{$data{task}} = \%data;
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}
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}
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close DESC;
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my @ret;
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# In this loop, we simultaneously:
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#
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# - enrich the %data structures of all tasks with a
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# ->{sortkey} field
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#
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# - and collect them into @ret.
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foreach my $task (keys %tasks) {
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my $t=$tasks{$task};
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if (exists $t->{parent} && exists $tasks{$t->{parent}}) {
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# This task has a "Parent:" task. For example:
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#
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# Task: sometask
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# Relevance: 3
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# Parent: parenttask
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#
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# Task: parenttask
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# Relevance: 6
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#
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# In this case, we set the sortkey to "6parenttask-03".
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#
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# XXX TODO: support correct sorting when
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# Relevance is 10 or more (e.g. package
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# education-tasks).
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$t->{sortkey}=$tasks{$t->{parent}}->{relevance}.$t->{parent}."-0".$t->{relevance};
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}
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else {
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# This task has no "Parent:" task. For example:
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#
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# Task: sometask
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# Relevance: 3
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#
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# In this case, we set the sortkey to "3sometask-00".
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$t->{sortkey}=$t->{relevance}.$t->{task}."-00";
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}
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push @ret, $t;
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}
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return @ret;
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}
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# &all_tasks();
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# => (
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# {
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# task => "gnome-desktop",
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# parent => "desktop",
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# relevance => 1,
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# key => [task-gnome-desktop"],
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# section => "user",
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# test-default-desktop => "3 gnome",
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# sortkey => 1desktop-01
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# },
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# ...
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# )
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# Loads info for all tasks, and returns a set of task structures.
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sub all_tasks {
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my %seen;
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# Filter out duplicates: only the first occurrence of each
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# task name is taken into account.
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grep { $seen{$_->{task}}++; $seen{$_->{task}} < 2 }
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map { read_task_desc($_) } list_task_descs();
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}
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# my %apt_available = %_info_avail()
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# => (
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# "debian-policy" => { priority => "optional", section => "doc" },
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# ...
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# )
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#
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# Call "apt-cache dumpavail" and collect the output information about
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# package name, priority and section.
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sub _info_avail {
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my %ret = ();
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# Might be better to use the perl apt bindings, but they are not
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# currently in base.
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open (AVAIL, "apt-cache dumpavail|");
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local $_;
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my ($package, $section, $priority);
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while (<AVAIL>) {
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chomp;
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if (not $_) {
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# End of stanza
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if (defined $package && defined $priority && defined $section) {
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$ret{$package} = {
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"priority" => $priority,
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"section" => $section,
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};
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}
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}
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elsif (/^Package: (.*)/) {
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$package = $1;
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}
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elsif (/^Priority: (.*)/) {
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$priority = $1;
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}
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elsif (/^Section: (.*)/) {
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$section = $1;
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}
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}
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close AVAIL;
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return %ret;
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}
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# my @installed = &list_installed();
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# => ("emacs", "vim", ...)
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# Returns a list of all installed packages.
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# This is not memoised and will run dpkg-query at each invocation.
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# See &package_installed() for memoisation.
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sub list_installed {
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my @list;
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open (LIST, q{LANG=C dpkg-query -W -f='${Package} ${Status}\n' |});
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while (<LIST>) {
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# Each line looks like this:
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# "adduser install ok installed"
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if (/^([^ ]+) .* installed$/m) {
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push @list, $1;
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}
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}
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close LIST;
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return @list;
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}
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my %_info_avail_cache;
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# my $apt_available = &info_avail();
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# => {
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# "debian-policy" => { priority => "optional", section => "doc" },
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# ...
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# }
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# Returns a hash of all available packages. Memoised.
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sub info_avail {
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my $package = shift;
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if (!%_info_avail_cache) {
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%_info_avail_cache = _info_avail();
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}
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return \%_info_avail_cache;
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}
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# if (&package_avail("debian-policy")) { ... }
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# Given a package name, checks to see if it's installed or available.
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# Memoised.
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sub package_avail {
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my $package = shift;
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return info_avail()->{$package} || package_installed($package);
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}
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# Memoisation for &package_installed().
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my %installed_pkgs;
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# if (&package_installed("debian-policy")) { ... }
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# Given a package name, checks to see if it's installed. Memoised.
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sub package_installed {
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my $package=shift;
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if (! %installed_pkgs) {
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foreach my $pkg (list_installed()) {
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$installed_pkgs{$pkg} = 1;
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}
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}
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return $installed_pkgs{$package};
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}
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# if (&task_avail($task)) { ... }
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# Given a task hash, checks that all of its key packages are installed or available.
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# Returns true if all key packages are installed or available.
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# Returns false if any of the key packages is not.
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sub task_avail {
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local $_;
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my $task=shift;
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if (! ref $task->{key}) {
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return 1;
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}
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else {
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foreach my $pkg (@{$task->{key}}) {
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if (! package_avail($pkg)) {
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return 0;
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}
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}
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return 1;
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}
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}
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# if (&task_installed($task)) { ... }
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# Given a task hash, checks to see if it is already installed.
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# All of its key packages must be installed. Other packages are not checked.
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sub task_installed {
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local $_;
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my $task=shift;
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if (! ref $task->{key}) {
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return 0; # can't tell with no key packages
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}
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else {
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foreach my $pkg (@{$task->{key}}) {
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if (! package_installed($pkg)) {
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return 0;
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}
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}
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return 1;
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}
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}
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# my @packages = &task_packages($task);
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# Given a task hash, returns a list of all available packages in the task.
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#
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# It is the list of "Key:" packages, plus the packages indicated
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# through the "Packages:" field.
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sub task_packages {
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my $task=shift;
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# The %list hashtable is used as a set: only its keys matter,
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# the value is irrelevant.
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my %list;
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# "Key:" packages are always included.
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if (ref $task->{key}) {
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# $task->{key} is not a line but a reference (to an
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# array of lines).
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map { $list{$_}=1 } @{$task->{key}};
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}
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if (! defined $task->{packages}) {
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# No "Packages:" field.
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# only key
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}
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elsif ($task->{packages} eq 'standard') {
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# Special case of "Packages: standard"
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#
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# The standard packages are the non-library ones in
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# "main" which priority is required, important or
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# standard.
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#
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# We add all standard packages to %list, except the
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# ones that are already installed.
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my %info_avail=%{info_avail()};
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while (my ($package, $info) = each(%info_avail)) {
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my ($priority, $section) = ($info->{priority}, $info->{section});
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if (($priority eq 'required' ||
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$priority eq 'important' ||
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$priority eq 'standard') &&
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# Exclude packages in non-main and library sections
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$section !~ /^lib|\// &&
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# Exclude already installed packages
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!package_installed($package) &&
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# Exclude also any systemd-related package
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# (needed starting with ascii)
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$package !~ m/.*systemd.*/ ){
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$list{$package} = 1;
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}
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}
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}
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||
|
|
else {
|
||
|
|
# external method
|
||
|
|
my ($method, @params);
|
||
|
|
|
||
|
|
# "Packages:" requests to run a program and use its
|
||
|
|
# output as the names of packages.
|
||
|
|
#
|
||
|
|
# There are basically two forms:
|
||
|
|
#
|
||
|
|
# Packages: myprogram
|
||
|
|
#
|
||
|
|
# Runs /usr/lib/tasksel/packages/myprogram TASKNAME
|
||
|
|
#
|
||
|
|
# Packages: myprogram
|
||
|
|
# arg1
|
||
|
|
# arg2...
|
||
|
|
#
|
||
|
|
# Runs /usr/lib/tasksel/packages/myprogram TASKNAME arg1 arg2...
|
||
|
|
#
|
||
|
|
# The tasksel package provides the simple "list"
|
||
|
|
# program which simply outputs its arguments.
|
||
|
|
if (ref $task->{packages}) {
|
||
|
|
@params=@{$task->{packages}};
|
||
|
|
$method=shift @params;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$method=$task->{packages};
|
||
|
|
}
|
||
|
|
|
||
|
|
map { $list{$_}=1 }
|
||
|
|
grep { package_avail($_) }
|
||
|
|
split(' ', `$packagesdir/$method $task->{task} @params`);
|
||
|
|
}
|
||
|
|
|
||
|
|
return keys %list;
|
||
|
|
}
|
||
|
|
|
||
|
|
# &task_test($task, $new_install, $display_by_default, $install_by_default);
|
||
|
|
# Given a task hash, runs any test program specified in its data, and sets
|
||
|
|
# the _display and _install fields to 1 or 0 depending on its result.
|
||
|
|
#
|
||
|
|
# If _display is true, _install means the default proposal shown to
|
||
|
|
# the user, who can modify it. If _display is false, _install says
|
||
|
|
# what to do, without asking the user.
|
||
|
|
sub task_test {
|
||
|
|
my $task=shift;
|
||
|
|
my $new_install=shift;
|
||
|
|
$task->{_display} = shift; # default
|
||
|
|
$task->{_install} = shift; # default
|
||
|
|
$ENV{NEW_INSTALL}=$new_install if defined $new_install;
|
||
|
|
# Each task may define one or more tests in the form:
|
||
|
|
#
|
||
|
|
# Test-PROGRAM: ARGUMENTS...
|
||
|
|
#
|
||
|
|
# Each of the programs will be run like this:
|
||
|
|
#
|
||
|
|
# /usr/lib/tasksel/tests/PROGRAM TASKNAME ARGUMENTS...
|
||
|
|
#
|
||
|
|
# If $new_install is true, the NEW_INSTALL environment
|
||
|
|
# variable is set for invoking the program.
|
||
|
|
#
|
||
|
|
# The return code of the invocation then indicates what to set:
|
||
|
|
#
|
||
|
|
# 0 - don't display, but install it
|
||
|
|
# 1 - don't display, don't install
|
||
|
|
# 2 - display, mark for installation
|
||
|
|
# 3 - display, don't mark for installation
|
||
|
|
# anything else - don't change the values of _display or _install
|
||
|
|
foreach my $test (grep /^test-.*/, keys %$task) {
|
||
|
|
$test=~s/^test-//;
|
||
|
|
if (-x "$testdir/$test") {
|
||
|
|
my $ret=system("$testdir/$test", $task->{task}, split " ", $task->{"test-$test"}) >> 8;
|
||
|
|
if ($ret == 0) {
|
||
|
|
$task->{_display} = 0;
|
||
|
|
$task->{_install} = 1;
|
||
|
|
}
|
||
|
|
elsif ($ret == 1) {
|
||
|
|
$task->{_display} = 0;
|
||
|
|
$task->{_install} = 0;
|
||
|
|
}
|
||
|
|
elsif ($ret == 2) {
|
||
|
|
$task->{_display} = 1;
|
||
|
|
$task->{_install} = 1;
|
||
|
|
}
|
||
|
|
elsif ($ret == 3) {
|
||
|
|
$task->{_display} = 1;
|
||
|
|
$task->{_install} = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
delete $ENV{NEW_INSTALL};
|
||
|
|
return $task;
|
||
|
|
}
|
||
|
|
|
||
|
|
# &hide_enhancing_tasks($task);
|
||
|
|
#
|
||
|
|
# Hides a task and marks it not to be installed if it enhances other
|
||
|
|
# tasks.
|
||
|
|
#
|
||
|
|
# Returns $task.
|
||
|
|
sub hide_enhancing_tasks {
|
||
|
|
my $task=shift;
|
||
|
|
if (exists $task->{enhances} && length $task->{enhances}) {
|
||
|
|
$task->{_display} = 0;
|
||
|
|
$task->{_install} = 0;
|
||
|
|
}
|
||
|
|
return $task;
|
||
|
|
}
|
||
|
|
|
||
|
|
# &getdescriptions(@tasks);
|
||
|
|
#
|
||
|
|
# Looks up the descriptions of a set of tasks, returning a new list
|
||
|
|
# with the ->{shortdesc} fields filled in.
|
||
|
|
#
|
||
|
|
# Ideally, the .desc file would indicate a description of each task,
|
||
|
|
# which would be retrieved quickly. For missing Description fields,
|
||
|
|
# we fetch the data with "apt-cache show task-TASKNAME...", which
|
||
|
|
# takes longer.
|
||
|
|
#
|
||
|
|
# @tasks: list of references, each referencing a task data structure.
|
||
|
|
#
|
||
|
|
# Each data structured is enriched with a ->{shortdesc} field,
|
||
|
|
# containing the localized short description.
|
||
|
|
#
|
||
|
|
# Returns @tasks.
|
||
|
|
sub getdescriptions {
|
||
|
|
my @tasks=@_;
|
||
|
|
|
||
|
|
# If the task has a description field in the task desc file,
|
||
|
|
# just use it, looking up a translation in gettext.
|
||
|
|
@tasks = map {
|
||
|
|
if (defined $_->{description}) {
|
||
|
|
$_->{shortdesc}=dgettext("debian-tasks", $_->{description}->[0]);
|
||
|
|
}
|
||
|
|
$_;
|
||
|
|
} @tasks;
|
||
|
|
|
||
|
|
# Otherwise, a more expensive apt-cache query is done,
|
||
|
|
# to use the descriptions of task packages.
|
||
|
|
my @todo = grep { ! defined $_->{shortdesc} } @tasks;
|
||
|
|
if (@todo) {
|
||
|
|
open(APT_CACHE, "apt-cache show ".join(" ", map { $taskpackageprefix.$_->{task} } @todo)." |") || die "apt-cache show: $!";
|
||
|
|
local $/="\n\n";
|
||
|
|
while (defined($_ = <APT_CACHE>)) {
|
||
|
|
my ($name)=/^Package: $taskpackageprefix(.*)$/m;
|
||
|
|
my ($description)=/^Description-(?:[a-z][a-z](?:_[A-Z][A-Z])?): (.*)$/m;
|
||
|
|
($description)=/^Description: (.*)$/m
|
||
|
|
unless defined $description;
|
||
|
|
if (defined $name && defined $description) {
|
||
|
|
@tasks = map {
|
||
|
|
if ($_->{task} eq $name) {
|
||
|
|
$_->{shortdesc}=$description;
|
||
|
|
}
|
||
|
|
$_;
|
||
|
|
} @tasks;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
close APT_CACHE;
|
||
|
|
}
|
||
|
|
|
||
|
|
return @tasks;
|
||
|
|
}
|
||
|
|
|
||
|
|
# &task_to_debconf(@tasks);
|
||
|
|
# => "task1, task2, task3"
|
||
|
|
# Converts a list of tasks into a debconf list of the task short
|
||
|
|
# descriptions.
|
||
|
|
sub task_to_debconf {
|
||
|
|
join ", ", map { format_description_for_debconf($_) } getdescriptions(@_);
|
||
|
|
}
|
||
|
|
|
||
|
|
# my $debconf_string = &format_description_for_debconf($task);
|
||
|
|
# => "... GNOME"
|
||
|
|
# Build a string for making a debconf menu item.
|
||
|
|
# If the task has a parent task, "... " is prepended.
|
||
|
|
sub format_description_for_debconf {
|
||
|
|
my $task=shift;
|
||
|
|
my $d=$task->{shortdesc};
|
||
|
|
$d=~s/,/\\,/g;
|
||
|
|
$d="... ".$d if exists $task->{parent};
|
||
|
|
return $d;
|
||
|
|
}
|
||
|
|
|
||
|
|
# my $debconf_string = &task_to_debconf_C(@tasks);
|
||
|
|
# => "gnome-desktop, kde-desktop"
|
||
|
|
# Converts a list of tasks into a debconf list of the task names.
|
||
|
|
sub task_to_debconf_C {
|
||
|
|
join ", ", map { $_->{task} } @_;
|
||
|
|
}
|
||
|
|
|
||
|
|
# my @my_tasks = &list_to_tasks("task1, task2, task3", @tasks);
|
||
|
|
# => ($task1, $task2, $task3)
|
||
|
|
# Given a first parameter that is a string listing task names, and then a
|
||
|
|
# list of task hashes, returns a list of hashes for all the tasks
|
||
|
|
# in the list.
|
||
|
|
sub list_to_tasks {
|
||
|
|
my $list=shift;
|
||
|
|
my %lookup = map { $_->{task} => $_ } @_;
|
||
|
|
return grep { defined } map { $lookup{$_} } split /[, ]+/, $list;
|
||
|
|
}
|
||
|
|
|
||
|
|
# my @sorted_tasks = &order_for_display(@tasks);
|
||
|
|
# Orders a list of tasks for display.
|
||
|
|
# The tasks are ordered according to the ->{sortkey}.
|
||
|
|
sub order_for_display {
|
||
|
|
sort {
|
||
|
|
$a->{sortkey} cmp $b->{sortkey}
|
||
|
|
|| 0 ||
|
||
|
|
$a->{task} cmp $b->{task}
|
||
|
|
} @_;
|
||
|
|
}
|
||
|
|
|
||
|
|
# &name_to_task($taskname, &all_tasks());
|
||
|
|
# &name_to_task("gnome-desktop", &all_tasks());
|
||
|
|
# => {
|
||
|
|
# task => "gnome-desktop",
|
||
|
|
# parent => "desktop",
|
||
|
|
# relevance => 1,
|
||
|
|
# key => [task-gnome-desktop"],
|
||
|
|
# section => "user",
|
||
|
|
# test-default-desktop => "3 gnome",
|
||
|
|
# sortkey => 1desktop-01
|
||
|
|
# }
|
||
|
|
# Given a set of tasks and a name, returns the one with that name.
|
||
|
|
sub name_to_task {
|
||
|
|
my $name=shift;
|
||
|
|
return (grep { $_->{task} eq $name } @_)[0];
|
||
|
|
}
|
||
|
|
|
||
|
|
# &task_script($task, "preinst") or die;
|
||
|
|
# Run the task's (pre|post)(inst|rm) script, if there is any.
|
||
|
|
# Such scripts are located under /usr/lib/tasksel/info/.
|
||
|
|
sub task_script {
|
||
|
|
my $task=shift;
|
||
|
|
my $script=shift;
|
||
|
|
|
||
|
|
my $path="$infodir/$task.$script";
|
||
|
|
if (-e $path && -x _) {
|
||
|
|
my $ret=run($path);
|
||
|
|
if ($ret != 0) {
|
||
|
|
warning("$path exited with nonzero code $ret");
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
# &usage;
|
||
|
|
# Print the usage.
|
||
|
|
sub usage {
|
||
|
|
print STDERR gettext(q{tasksel [OPTIONS...] [COMMAND...]
|
||
|
|
Commands:
|
||
|
|
install TASK... install tasks
|
||
|
|
remove TASK... uninstall tasks
|
||
|
|
--task-packages=TASK list packages installed by TASK; can be repeated
|
||
|
|
--task-desc=TASK print the description of a task
|
||
|
|
--list-tasks list tasks that would be displayed and exit
|
||
|
|
Options:
|
||
|
|
-t, --test dry-run: don't really change anything
|
||
|
|
--new-install automatically install some tasks
|
||
|
|
--debconf-apt-progress="ARGUMENTS..."
|
||
|
|
provide additional arguments to debconf-apt-progress(1)
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
# Process command line options and return them in a hash.
|
||
|
|
sub getopts {
|
||
|
|
my %ret;
|
||
|
|
Getopt::Long::Configure ("bundling");
|
||
|
|
if (! GetOptions(\%ret, "test|t", "new-install", "list-tasks",
|
||
|
|
"task-packages=s@", "task-desc=s",
|
||
|
|
"debconf-apt-progress=s")) {
|
||
|
|
usage();
|
||
|
|
exit(1);
|
||
|
|
}
|
||
|
|
# Special case apt-like syntax.
|
||
|
|
if (@ARGV) {
|
||
|
|
my $cmd = shift @ARGV;
|
||
|
|
if ($cmd eq "install") {
|
||
|
|
$ret{cmd_install} = \@ARGV;
|
||
|
|
}
|
||
|
|
elsif ($cmd eq "remove") {
|
||
|
|
$ret{cmd_remove} = \@ARGV;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
usage();
|
||
|
|
exit 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$testmode=1 if $ret{test}; # set global
|
||
|
|
return %ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
# &interactive($options, @tasks);
|
||
|
|
# Ask the user and mark tasks to install or remove accordingly.
|
||
|
|
# The tasks are enriched with ->{_install} or ->{_remove} set to true accordingly.
|
||
|
|
sub interactive {
|
||
|
|
my $options = shift;
|
||
|
|
my @tasks = @_;
|
||
|
|
|
||
|
|
if (! $options->{"new-install"}) {
|
||
|
|
# Don't install hidden tasks if this is not a new install.
|
||
|
|
map { $_->{_install} = 0 } grep { $_->{_display} == 0 } @tasks;
|
||
|
|
}
|
||
|
|
|
||
|
|
my @list = order_for_display(grep { $_->{_display} == 1 } @tasks);
|
||
|
|
if (@list) {
|
||
|
|
if (! $options->{"new-install"}) {
|
||
|
|
# Find tasks that are already installed.
|
||
|
|
map { $_->{_installed} = task_installed($_) } @list;
|
||
|
|
# Don't install new tasks unless manually selected.
|
||
|
|
map { $_->{_install} = 0 } @list;
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
# Assume that no tasks are installed, to ensure
|
||
|
|
# that complete tasks get installed on new
|
||
|
|
# installs.
|
||
|
|
map { $_->{_installed} = 0 } @list;
|
||
|
|
}
|
||
|
|
my $question="tasksel/tasks";
|
||
|
|
if ($options->{"new-install"}) {
|
||
|
|
$question="tasksel/first";
|
||
|
|
}
|
||
|
|
my @default = grep { $_->{_display} == 1 && ($_->{_install} == 1 || $_->{_installed} == 1) } @tasks;
|
||
|
|
my $tmpfile=`mktemp`;
|
||
|
|
chomp $tmpfile;
|
||
|
|
my $ret=system($debconf_helper, $tmpfile,
|
||
|
|
task_to_debconf_C(@list),
|
||
|
|
task_to_debconf(@list),
|
||
|
|
task_to_debconf_C(@default),
|
||
|
|
$question) >> 8;
|
||
|
|
if ($ret == 30) {
|
||
|
|
exit 10; # back up
|
||
|
|
}
|
||
|
|
elsif ($ret != 0) {
|
||
|
|
error "debconf failed to run";
|
||
|
|
}
|
||
|
|
open(IN, "<$tmpfile");
|
||
|
|
$ret=<IN>;
|
||
|
|
if (! defined $ret) {
|
||
|
|
die "tasksel canceled\n";
|
||
|
|
}
|
||
|
|
chomp $ret;
|
||
|
|
close IN;
|
||
|
|
unlink $tmpfile;
|
||
|
|
|
||
|
|
# Set _install flags based on user selection.
|
||
|
|
map { $_->{_install} = 0 } @list;
|
||
|
|
foreach my $task (list_to_tasks($ret, @tasks)) {
|
||
|
|
if (! $task->{_installed}) {
|
||
|
|
$task->{_install} = 1;
|
||
|
|
}
|
||
|
|
$task->{_selected} = 1;
|
||
|
|
}
|
||
|
|
foreach my $task (@list) {
|
||
|
|
if (! $task->{_selected} && $task->{_installed}) {
|
||
|
|
$task->{_remove} = 1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# When a $task Enhances: a @group_of_tasks, it means that
|
||
|
|
# $task can only be installed if @group_of_tasks are also
|
||
|
|
# installed; and if @group_of_tasks is installed, it is an
|
||
|
|
# incentive to also install $task.
|
||
|
|
#
|
||
|
|
# For example, consider this task:
|
||
|
|
#
|
||
|
|
# Task: amharic-desktop
|
||
|
|
# Enhances: desktop, amharic
|
||
|
|
#
|
||
|
|
# The task amharic-desktop installs packages that make
|
||
|
|
# particular sense if the user wants both a desktop and the
|
||
|
|
# amharic language environment. Conversely, if
|
||
|
|
# amharic-desktop is selected (e.g. by preseeding), then it
|
||
|
|
# automatically also selects tasks "desktop" and "amharic".
|
||
|
|
|
||
|
|
# If an enhancing task is already marked for
|
||
|
|
# install, probably by preseeding, mark the tasks
|
||
|
|
# it enhances for install.
|
||
|
|
foreach my $task (grep { $_->{_install} && exists $_->{enhances} &&
|
||
|
|
length $_->{enhances} } @tasks) {
|
||
|
|
map { $_->{_install}=1 } list_to_tasks($task->{enhances}, @tasks);
|
||
|
|
}
|
||
|
|
|
||
|
|
# Select enhancing tasks for install.
|
||
|
|
# XXX FIXME ugly hack -- loop until enhances settle to handle
|
||
|
|
# chained enhances. This is ugly and could loop forever if
|
||
|
|
# there's a cycle.
|
||
|
|
my $enhances_needswork=1;
|
||
|
|
|
||
|
|
# %tested is the memoization of the below calls to
|
||
|
|
# %&task_test().
|
||
|
|
my %tested;
|
||
|
|
|
||
|
|
# Loop as long as there is work to do.
|
||
|
|
while ($enhances_needswork) {
|
||
|
|
$enhances_needswork=0;
|
||
|
|
|
||
|
|
# Loop over all unselected tasks that enhance one or
|
||
|
|
# more things.
|
||
|
|
foreach my $task (grep { ! $_->{_install} && exists $_->{enhances} &&
|
||
|
|
length $_->{enhances} } @tasks) {
|
||
|
|
# TODO: the computation of %tasknames could be
|
||
|
|
# done once and for all outside of this nested
|
||
|
|
# loop, saving some redundant work.
|
||
|
|
my %tasknames = map { $_->{task} => $_ } @tasks;
|
||
|
|
|
||
|
|
# @deps is the list of tasks enhanced by $task.
|
||
|
|
#
|
||
|
|
# Basically, if all the deps are installed,
|
||
|
|
# and tests say that $task can be installed,
|
||
|
|
# then mark it to install. Otherwise, don't
|
||
|
|
# install it.
|
||
|
|
my @deps=map { $tasknames{$_} } split ", ", $task->{enhances};
|
||
|
|
|
||
|
|
if (grep { ! defined $_ } @deps) {
|
||
|
|
# task enhances an unavailable or
|
||
|
|
# uninstallable task
|
||
|
|
next;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (@deps) {
|
||
|
|
# FIXME: isn't $orig_state always
|
||
|
|
# false, given that the "for" loop
|
||
|
|
# above keeps only $tasks that do
|
||
|
|
# not have $_->{_install}?
|
||
|
|
my $orig_state=$task->{_install};
|
||
|
|
|
||
|
|
# Mark enhancing tasks for install if their
|
||
|
|
# dependencies are met and their test fields
|
||
|
|
# mark them for install.
|
||
|
|
if (! exists $tested{$task->{task}}) {
|
||
|
|
$ENV{TESTING_ENHANCER}=1;
|
||
|
|
task_test($task, $options->{"new-install"}, 0, 1);
|
||
|
|
delete $ENV{TESTING_ENHANCER};
|
||
|
|
$tested{$task->{task}}=$task->{_install};
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
$task->{_install}=$tested{$task->{task}};
|
||
|
|
}
|
||
|
|
|
||
|
|
foreach my $dep (@deps) {
|
||
|
|
if (! $dep->{_install}) {
|
||
|
|
$task->{_install} = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($task->{_install} != $orig_state) {
|
||
|
|
# We have made progress:
|
||
|
|
# continue another round.
|
||
|
|
$enhances_needswork=1;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
sub main {
|
||
|
|
my %options=getopts();
|
||
|
|
my @tasks_remove;
|
||
|
|
my @tasks_install;
|
||
|
|
|
||
|
|
# Options that output stuff and don't need a full processed list of
|
||
|
|
# tasks.
|
||
|
|
if (exists $options{"task-packages"}) {
|
||
|
|
my @tasks=all_tasks();
|
||
|
|
foreach my $taskname (@{$options{"task-packages"}}) {
|
||
|
|
my $task=name_to_task($taskname, @tasks);
|
||
|
|
if ($task) {
|
||
|
|
print "$_\n" foreach task_packages($task);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
exit(0);
|
||
|
|
}
|
||
|
|
elsif ($options{"task-desc"}) {
|
||
|
|
my $task=name_to_task($options{"task-desc"}, all_tasks());
|
||
|
|
if ($task) {
|
||
|
|
# The Description looks like this:
|
||
|
|
#
|
||
|
|
# Description: one-line short description
|
||
|
|
# Longer description,
|
||
|
|
# possibly spanning
|
||
|
|
# multiple lines.
|
||
|
|
#
|
||
|
|
# $extdesc will contain the long description,
|
||
|
|
# reformatted to one line.
|
||
|
|
my $extdesc=join(" ", @{$task->{description}}[1..$#{$task->{description}}]);
|
||
|
|
print dgettext("debian-tasks", $extdesc)."\n";
|
||
|
|
exit(0);
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
fprintf STDERR ("Task %s has no description\n", $options{"task-desc"});
|
||
|
|
exit(1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
# This is relatively expensive, get the full list of available tasks and
|
||
|
|
# mark them.
|
||
|
|
my @tasks=map { hide_enhancing_tasks($_) } map { task_test($_, $options{"new-install"}, 1, 0) }
|
||
|
|
grep { task_avail($_) } all_tasks();
|
||
|
|
|
||
|
|
if ($options{"list-tasks"}) {
|
||
|
|
map { $_->{_installed} = task_installed($_) } @tasks;
|
||
|
|
@tasks=getdescriptions(@tasks);
|
||
|
|
# TODO: use printf() instead of print for correct column alignment
|
||
|
|
print "".($_->{_installed} ? "i" : "u")." ".$_->{task}."\t".$_->{shortdesc}."\n"
|
||
|
|
foreach order_for_display(grep { $_->{_display} } @tasks);
|
||
|
|
exit(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
if ($options{cmd_install}) {
|
||
|
|
@tasks_install = map { name_to_task($_, @tasks) } @{$options{cmd_install}};
|
||
|
|
}
|
||
|
|
elsif ($options{cmd_remove}) {
|
||
|
|
@tasks_remove = map { name_to_task($_, @tasks) } @{$options{cmd_remove}};
|
||
|
|
}
|
||
|
|
else {
|
||
|
|
interactive(\%options, @tasks);
|
||
|
|
|
||
|
|
# Add tasks to install
|
||
|
|
@tasks_install = grep { $_->{_install} } @tasks;
|
||
|
|
# Add tasks to remove
|
||
|
|
@tasks_remove = grep { $_->{_remove} } @tasks;
|
||
|
|
}
|
||
|
|
|
||
|
|
my @cmd;
|
||
|
|
if (-x "/usr/bin/debconf-apt-progress") {
|
||
|
|
@cmd = "debconf-apt-progress";
|
||
|
|
push @cmd, split(' ', $options{'debconf-apt-progress'})
|
||
|
|
if exists $options{'debconf-apt-progress'};
|
||
|
|
push @cmd, "--";
|
||
|
|
}
|
||
|
|
push @cmd, qw{apt-get -q -y -o APT::Install-Recommends=true -o APT::Get::AutomaticRemove=true -o Acquire::Retries=3 install};
|
||
|
|
|
||
|
|
# And finally, act on selected tasks.
|
||
|
|
if (@tasks_install || @tasks_remove) {
|
||
|
|
foreach my $task (@tasks_remove) {
|
||
|
|
push @cmd, map { "$_-" } task_packages($task);
|
||
|
|
task_script($task->{task}, "prerm");
|
||
|
|
}
|
||
|
|
foreach my $task (@tasks_install) {
|
||
|
|
push @cmd, task_packages($task);
|
||
|
|
task_script($task->{task}, "preinst");
|
||
|
|
}
|
||
|
|
my $ret=run(@cmd);
|
||
|
|
if ($ret != 0) {
|
||
|
|
error gettext("apt-get failed")." ($ret)";
|
||
|
|
}
|
||
|
|
foreach my $task (@tasks_remove) {
|
||
|
|
task_script($task->{task}, "postrm");
|
||
|
|
}
|
||
|
|
foreach my $task (@tasks_install) {
|
||
|
|
task_script($task->{task}, "postinst");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
main();
|