Adding upstream version 1.22.4.upstream/1.22.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 264 insertions, 0 deletions

diff --git a/scripts/Dpkg/Source/Archive.pm b/scripts/Dpkg/Source/Archive.pm
new file mode 100644
index 0000000..badb81b
--- /dev/null
+++ b/scripts/Dpkg/Source/Archive.pm
@@ -0,0 +1,264 @@
+# Copyright © 2008 Raphaël Hertzog <hertzog@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 <https://www.gnu.org/licenses/>.
+
+=encoding utf8
+
+=head1 NAME
+
+Dpkg::Source::Archive - source tarball archive support
+
+=head1 DESCRIPTION
+
+This module provides a class that implements support for handling
+source tarballs.
+
+B<Note>: This is a private module, its API can change at any time.
+
+=cut
+
+package Dpkg::Source::Archive 0.01;
+
+use strict;
+use warnings;
+
+use Carp;
+use Errno qw(ENOENT);
+use File::Temp qw(tempdir);
+use File::Basename qw(basename);
+use File::Spec;
+use File::Find;
+use Cwd;
+
+use Dpkg ();
+use Dpkg::Gettext;
+use Dpkg::ErrorHandling;
+use Dpkg::IPC;
+use Dpkg::Source::Functions qw(erasedir fixperms);
+
+use parent qw(Dpkg::Compression::FileHandle);
+
+sub create {
+    my ($self, %opts) = @_;
+    $opts{options} //= [];
+    my %spawn_opts;
+    # Possibly run tar from another directory
+    if ($opts{chdir}) {
+        $spawn_opts{chdir} = $opts{chdir};
+        *$self->{chdir} = $opts{chdir};
+    }
+    # Redirect input/output appropriately
+    $self->ensure_open('w');
+    $spawn_opts{to_handle} = $self->get_filehandle();
+    $spawn_opts{from_pipe} = \*$self->{tar_input};
+    # Try to use a deterministic mtime.
+    my $mtime = $opts{source_date} // $ENV{SOURCE_DATE_EPOCH} || time;
+    # Call tar creation process
+    $spawn_opts{delete_env} = [ 'TAR_OPTIONS' ];
+    $spawn_opts{exec} = [
+        $Dpkg::PROGTAR, '-cf', '-', '--format=gnu', '--sort=name',
+                        '--mtime', "\@$mtime", '--clamp-mtime', '--null',
+                        '--numeric-owner', '--owner=0', '--group=0',
+                        @{$opts{options}}, '-T', '-',
+    ];
+    *$self->{pid} = spawn(%spawn_opts);
+    *$self->{cwd} = getcwd();
+}
+
+sub _add_entry {
+    my ($self, $file) = @_;
+    my $cwd = *$self->{cwd};
+    croak 'call create() first' unless *$self->{tar_input};
+    if ($file =~ m{^\Q$cwd\E/(.+)$}) {
+        # Make pathname relative to the source root directory.
+        $file = $1;
+    }
+    print({ *$self->{tar_input} } "$file\0")
+        or syserr(g_('write on tar input'));
+}
+
+sub add_file {
+    my ($self, $file) = @_;
+    my $testfile = $file;
+    if (*$self->{chdir}) {
+        $testfile = File::Spec->catfile(*$self->{chdir}, $file);
+    }
+    croak 'add_file() does not handle directories'
+        if not -l $testfile and -d _;
+    $self->_add_entry($file);
+}
+
+sub add_directory {
+    my ($self, $file) = @_;
+    my $testfile = $file;
+    if (*$self->{chdir}) {
+        $testfile = File::Spec->catdir(*$self->{chdir}, $file);
+    }
+    croak 'add_directory() only handles directories'
+        if -l $testfile or not -d _;
+    $self->_add_entry($file);
+}
+
+sub finish {
+    my $self = shift;
+
+    close(*$self->{tar_input}) or syserr(g_('close on tar input'));
+    wait_child(*$self->{pid}, cmdline => "$Dpkg::PROGTAR -cf -");
+    delete *$self->{pid};
+    delete *$self->{tar_input};
+    delete *$self->{cwd};
+    delete *$self->{chdir};
+    $self->close();
+}
+
+sub extract {
+    my ($self, $dest, %opts) = @_;
+    $opts{options} //= [];
+    $opts{in_place} //= 0;
+    $opts{no_fixperms} //= 0;
+    my %spawn_opts = (wait_child => 1);
+
+    # Prepare destination
+    my $template = basename($self->get_filename()) .  '.tmp-extract.XXXXX';
+    unless (-e $dest) {
+        # Kludge so that realpath works
+        mkdir($dest) or syserr(g_('cannot create directory %s'), $dest);
+    }
+    my $tmp = tempdir($template, DIR => Cwd::realpath("$dest/.."), CLEANUP => 1);
+    $spawn_opts{chdir} = $tmp;
+
+    # Prepare stuff that handles the input of tar
+    $self->ensure_open('r', delete_sig => [ 'PIPE' ]);
+    $spawn_opts{from_handle} = $self->get_filehandle();
+
+    # Call tar extraction process
+    $spawn_opts{delete_env} = [ 'TAR_OPTIONS' ];
+    $spawn_opts{exec} = [
+        $Dpkg::PROGTAR, '-xf', '-', '--no-same-permissions',
+                        '--no-same-owner', @{$opts{options}},
+    ];
+    spawn(%spawn_opts);
+    $self->close();
+
+    # Fix permissions on extracted files because tar insists on applying
+    # our umask _to the original permissions_ rather than mostly-ignoring
+    # the original permissions.
+    # We still need --no-same-permissions because otherwise tar might
+    # extract directory setgid (which we want inherited, not
+    # extracted); we need --no-same-owner because putting the owner
+    # back is tedious - in particular, correct group ownership would
+    # have to be calculated using mount options and other madness.
+    fixperms($tmp) unless $opts{no_fixperms};
+
+    # If we are extracting "in-place" do not remove the destination directory.
+    if ($opts{in_place}) {
+        my $canon_basedir = Cwd::realpath($dest);
+        # On Solaris /dev/null points to /devices/pseudo/mm@0:null.
+        my $canon_devnull = Cwd::realpath('/dev/null');
+        my $check_symlink = sub {
+            my $pathname = shift;
+            my $canon_pathname = Cwd::realpath($pathname);
+            if (not defined $canon_pathname) {
+                return if $! == ENOENT;
+
+                syserr(g_("pathname '%s' cannot be canonicalized"), $pathname);
+            }
+            return if $canon_pathname eq $canon_devnull;
+            return if $canon_pathname eq $canon_basedir;
+            return if $canon_pathname =~ m{^\Q$canon_basedir/\E};
+            warning(g_("pathname '%s' points outside source root (to '%s')"),
+                    $pathname, $canon_pathname);
+        };
+
+        my $move_in_place = sub {
+            my $relpath = File::Spec->abs2rel($File::Find::name, $tmp);
+            my $destpath = File::Spec->catfile($dest, $relpath);
+
+            my ($mode, $atime, $mtime);
+            lstat $File::Find::name
+                or syserr(g_('cannot get source pathname %s metadata'), $File::Find::name);
+            ((undef) x 2, $mode, (undef) x 5, $atime, $mtime) = lstat _;
+            my $src_is_dir = -d _;
+
+            my $dest_exists = 1;
+            if (not lstat $destpath) {
+                if ($! == ENOENT) {
+                    $dest_exists = 0;
+                } else {
+                    syserr(g_('cannot get target pathname %s metadata'), $destpath);
+                }
+            }
+            my $dest_is_dir = -d _;
+            if ($dest_exists) {
+                if ($dest_is_dir && $src_is_dir) {
+                    # Refresh the destination directory attributes with the
+                    # ones from the tarball.
+                    chmod $mode, $destpath
+                        or syserr(g_('cannot change directory %s mode'), $File::Find::name);
+                    utime $atime, $mtime, $destpath
+                        or syserr(g_('cannot change directory %s times'), $File::Find::name);
+
+                    # We should do nothing, and just walk further tree.
+                    return;
+                } elsif ($dest_is_dir) {
+                    rmdir $destpath
+                        or syserr(g_('cannot remove destination directory %s'), $destpath);
+                } else {
+                    $check_symlink->($destpath);
+                    unlink $destpath
+                        or syserr(g_('cannot remove destination file %s'), $destpath);
+                }
+            }
+            # If we are moving a directory, we do not need to walk it.
+            if ($src_is_dir) {
+                $File::Find::prune = 1;
+            }
+            rename $File::Find::name, $destpath
+                or syserr(g_('cannot move %s to %s'), $File::Find::name, $destpath);
+        };
+
+        find({
+            wanted => $move_in_place,
+            no_chdir => 1,
+            dangling_symlinks => 0,
+        }, $tmp);
+    } else {
+        # Rename extracted directory
+        opendir(my $dir_dh, $tmp) or syserr(g_('cannot opendir %s'), $tmp);
+        my @entries = grep { $_ ne '.' && $_ ne '..' } readdir($dir_dh);
+        closedir($dir_dh);
+
+        erasedir($dest);
+
+        if (scalar(@entries) == 1 && ! -l "$tmp/$entries[0]" && -d _) {
+            rename("$tmp/$entries[0]", $dest)
+                or syserr(g_('unable to rename %s to %s'),
+                          "$tmp/$entries[0]", $dest);
+        } else {
+            rename($tmp, $dest)
+                or syserr(g_('unable to rename %s to %s'), $tmp, $dest);
+        }
+    }
+    erasedir($tmp);
+}
+
+=head1 CHANGES
+
+=head2 Version 0.xx
+
+This is a private module.
+
+=cut
+
+1;