diff options
Diffstat (limited to 'dselect/methods/ftp/install.pl')
| -rwxr-xr-x | dselect/methods/ftp/install.pl | 624 |
1 files changed, 624 insertions, 0 deletions
diff --git a/dselect/methods/ftp/install.pl b/dselect/methods/ftp/install.pl new file mode 100755 index 0000000..64af2ee --- /dev/null +++ b/dselect/methods/ftp/install.pl @@ -0,0 +1,624 @@ +#!/usr/bin/perl +# +# Copyright © 1996 Andy Guy <awpguy@acs.ucalgary.ca> +# Copyright © 1998 Martin Schulze <joey@infodrom.north.de> +# Copyright © 1999, 2009 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; version 2 of the License. +# +# 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/>. + +use strict; +use warnings; + +use File::Path qw(make_path remove_tree); +use File::Basename; + +eval q{ + pop @INC if $INC[-1] eq '.'; + use File::Find; + use Data::Dumper; + + use Dpkg::File; +}; +if ($@) { + warn "Missing Dpkg modules required by the FTP access method.\n\n"; + exit 1; +} + +use Dselect::Ftp; + +my $ftp; + +# exit value +my $exit = 0; + +# deal with arguments +my $vardir = $ARGV[0]; +my $method = $ARGV[1]; +my $option = $ARGV[2]; + +if ($option eq 'manual') { + print "manual mode not supported yet\n"; + exit 1; +} +#print "vardir: $vardir, method: $method, option: $option\n"; + +my $methdir = "$vardir/methods/ftp"; + +# get info from control file +read_config("$methdir/vars"); + +chdir "$methdir"; +make_path("$methdir/$CONFIG{dldir}", { mode => 0755 }); + + +#Read md5sums already calculated +my %md5sums; +if (-f "$methdir/md5sums") { + my $code = file_slurp("$methdir/md5sums"); + my $VAR1; ## no critic (Variables::ProhibitUnusedVariables) + my $res = eval $code; + if ($@) { + die "couldn't eval $methdir/md5sums content: $@\n"; + } + if (ref($res)) { %md5sums = %{$res} } +} + +# Get a stanza. +# returns a ref to a hash containing flds->fld contents +# white space from the ends of lines is removed and newlines added +# (no trailing newline). +# die's if something unexpected happens +sub get_stanza { + my $fh = shift; + my %flds; + my $fld; + while (<$fh>) { + if (length != 0) { + FLDLOOP: while (1) { + if ( /^(\S+):\s*(.*)\s*$/ ) { + $fld = lc($1); + $flds{$fld} = $2; + while (<$fh>) { + if (length == 0) { + return %flds; + } elsif ( /^(\s.*)$/ ) { + $flds{$fld} = $flds{$fld} . "\n" . $1; + } else { + next FLDLOOP; + } + } + return %flds; + } else { + die "expected a start of field line, but got:\n$_"; + } + } + } + } + return %flds; +} + +# process status file +# create curpkgs hash with version (no version implies not currently installed) +# of packages we want +print "Processing status file...\n"; +my %curpkgs; +sub procstatus { + my (%flds, $fld); + open(my $status_fh, '<', "$vardir/status") or + die 'Could not open status file'; + while (%flds = get_stanza($status_fh), %flds) { + if($flds{'status'} =~ /^install ok/) { + my $cs = (split(/ /, $flds{'status'}))[2]; + if (($cs eq 'not-installed') || + ($cs eq 'half-installed') || + ($cs eq 'config-files')) { + $curpkgs{$flds{'package'}} = ''; + } else { + $curpkgs{$flds{'package'}} = $flds{'version'}; + } + } + } + close($status_fh); +} +procstatus(); + +sub dcmpvers { + my($a, $p, $b) = @_; + my ($r); + $r = system('dpkg', '--compare-versions', "$a", "$p", "$b"); + $r = $r/256; + if ($r == 0) { + return 1; + } elsif ($r == 1) { + return 0; + } + die "dpkg --compare-versions $a $p $b - failed with $r"; +} + +# process package files, looking for packages to install +# create a hash of these packages pkgname => version, filenames... +# filename => md5sum, size +# for all packages +my %pkgs; +my %pkgfiles; +sub procpkgfile { + my $fn = shift; + my $site = shift; + my $dist = shift; + my (@files, @sizes, @md5sums, $pkg, $ver, $nfs, $fld); + my(%flds); + open(my $pkgfile_fh, '<', $fn) or die "could not open package file $fn"; + while (%flds = get_stanza($pkgfile_fh), %flds) { + $pkg = $flds{'package'}; + $ver = $curpkgs{$pkg}; + @files = split(/[\s\n]+/, $flds{'filename'}); + @sizes = split(/[\s\n]+/, $flds{'size'}); + @md5sums = split(/[\s\n]+/, $flds{'md5sum'}); + if (defined($ver) && (($ver eq '') || dcmpvers($ver, 'lt', $flds{'version'}))) { + $pkgs{$pkg} = [ $flds{'version'}, [ @files ], $site ]; + $curpkgs{$pkg} = $flds{'version'}; + } + $nfs = scalar(@files); + if(($nfs != scalar(@sizes)) || ($nfs != scalar(@md5sums)) ) { + print "Different number of filenames, sizes and md5sums for $flds{'package'}\n"; + } else { + my $i = 0; + foreach my $fl (@files) { + $pkgfiles{$fl} = [ $md5sums[$i], $sizes[$i], $site, $dist ]; + $i++; + } + } + } + close $pkgfile_fh or die "cannot close package file $fn: $!\n"; +} + +print "\nProcessing Package files...\n"; +my ($fn, $i, $j); +$i = 0; +foreach my $site (@{$CONFIG{site}}) { + $j = 0; + foreach my $dist (@{$site->[2]}) { + $fn = $dist; + $fn =~ tr#/#_#; + $fn = "Packages.$site->[0].$fn"; + if (-f $fn) { + print " $site->[0] $dist...\n"; + procpkgfile($fn,$i,$j); + } else { + print "Could not find packages file for $site->[0] $dist distribution (re-run Update)\n" + } + $j++; + } + $i++; +} + +my $dldir = $CONFIG{dldir}; +# md5sum +sub md5sum($) { + my $fn = shift; + my $m = qx(md5sum $fn); + $m = (split(' ', $m))[0]; + $md5sums{"$dldir/$fn"} = $m; + return $m; +} + +# construct list of files to get +# hash of filenames => size of downloaded part +# query user for each partial file +print "\nConstructing list of files to get...\n"; +my %downloads; +my ($dir, @info, @files, $csize, $size); +my $totsize = 0; +foreach my $pkg (keys(%pkgs)) { + @files = @{$pkgs{$pkg}[1]}; + foreach my $fn (@files) { + #Look for a partial file + if (-f "$dldir/$fn.partial") { + rename "$dldir/$fn.partial", "$dldir/$fn"; + } + $dir = dirname($fn); + if(! -d "$dldir/$dir") { + make_path("$dldir/$dir", { mode => 0755 }); + } + @info = @{$pkgfiles{$fn}}; + $csize = int($info[1]/1024)+1; + if(-f "$dldir/$fn") { + $size = -s "$dldir/$fn"; + if($info[1] > $size) { + # partial download + if (yesno('y', "continue file: $fn (" . nb($size) . '/' . + nb($info[1]) . ')')) { + $downloads{$fn} = $size; + $totsize += $csize - int($size/1024); + } else { + $downloads{$fn} = 0; + $totsize += $csize; + } + } else { + # check md5sum + if (! exists $md5sums{"$dldir/$fn"}) { + $md5sums{"$dldir/$fn"} = md5sum("$dldir/$fn"); + } + if ($md5sums{"$dldir/$fn"} eq $info[0]) { + print "already got: $fn\n"; + } else { + print "corrupted: $fn\n"; + $downloads{$fn} = 0; + } + } + } else { + my $ffn = $fn; + $ffn =~ s/binary-[^\/]+/.../; + print 'want: ' . + $CONFIG{site}[$pkgfiles{$fn}[2]][0] . " $ffn (${csize}k)\n"; + $downloads{$fn} = 0; + $totsize += $csize; + } + } +} + +my $avsp = qx(df -Pk $dldir| awk '{ print \$4}' | tail -n 1); +chomp $avsp; + +print "\nApproximate total space required: ${totsize}k\n"; +print "Available space in $dldir: ${avsp}k\n"; + +#$avsp = qx(df -k $::dldir| paste -s | awk '{ print \$11}); +#chomp $avsp; + +if($totsize == 0) { + print 'Nothing to get.'; +} else { + if($totsize > $avsp) { + print "Space required is greater than available space,\n"; + print "you will need to select which items to get.\n"; + } +# ask user which files to get + if (($totsize > $avsp) || + yesno('n', 'Do you want to select the files to get')) { + $totsize = 0; + my @files = sort(keys(%downloads)); + my $def = 'y'; + foreach my $fn (@files) { + my @info = @{$pkgfiles{$fn}}; + my $csize = int($info[1] / 1024) + 1; + my $rsize = int(($info[1] - $downloads{$fn}) / 1024) + 1; + if ($rsize + $totsize > $avsp) { + print "no room for: $fn\n"; + delete $downloads{$fn}; + } else { + if(yesno($def, $downloads{$fn} + ? "download: $fn ${rsize}k/${csize}k (total = ${totsize}k)" + : "download: $fn ${rsize}k (total = ${totsize}k)")) { + $def = 'y'; + $totsize += $rsize; + } else { + $def = 'n'; + delete $downloads{$fn}; + } + } + } + } +} + +sub download() { + my $i = 0; + + foreach my $site (@{$CONFIG{site}}) { + my @getfiles = grep { $pkgfiles{$_}[2] == $i } keys %downloads; + my @pre_dist = (); # Directory to add before $fn + + #Scan distributions for looking at "(../)+/dir/dir" + my ($n,$cp); + $cp = -1; + foreach (@{$site->[2]}) { + $cp++; + $pre_dist[$cp] = ''; + $n = (s{\.\./}{../}g); + next if (! $n); + if (m<^((?:\.\./){$n}(?:[^/]+/){$n})>) { + $pre_dist[$cp] = $1; + } + } + + if (! @getfiles) { $i++; next; } + + $ftp = do_connect(ftpsite => $site->[0], + ftpdir => $site->[1], + passive => $site->[3], + username => $site->[4], + password => $site->[5], + useproxy => $CONFIG{use_auth_proxy}, + proxyhost => $CONFIG{proxyhost}, + proxylogname => $CONFIG{proxylogname}, + proxypassword => $CONFIG{proxypassword}); + + local $SIG{INT} = sub { die "Interrupted !\n"; }; + + my ($rsize, $res, $pre); + foreach my $fn (@getfiles) { + $pre = $pre_dist[$pkgfiles{$fn}[3]] || ''; + if ($downloads{$fn}) { + $rsize = ${pkgfiles{$fn}}[1] - $downloads{$fn}; + print "getting: $pre$fn (" . nb($rsize) . '/' . + nb($pkgfiles{$fn}[1]) . ")\n"; + } else { + print "getting: $pre$fn (". nb($pkgfiles{$fn}[1]) . ")\n"; + } + $res = $ftp->get("$pre$fn", "$dldir/$fn", $downloads{$fn}); + if(! $res) { + my $r = $ftp->code(); + print $ftp->message() . "\n"; + if (!($r == 550 || $r == 450)) { + return 1; + } else { + #Try to find another file or this package + print "Looking for another version of the package...\n"; + my ($dir, $package) = ($fn =~ m{^(.*)/([^/]+)_[^/]+.deb$}); + my $list = $ftp->ls("$pre$dir"); + if ($ftp->ok() && ref($list)) { + foreach my $file (@{$list}) { + if ($file =~ m/($dir\/\Q$package\E_[^\/]+.deb)/i) { + print "Package found : $file\n"; + print "getting: $file (size not known)\n"; + $res = $ftp->get($file, "$dldir/$1"); + if (! $res) { + $r = $ftp->code(); + print $ftp->message() . "\n"; + return 1 if ($r != 550 and $r != 450); + } + } + } + } + } + } + # fully got, remove it from list in case we have to re-download + delete $downloads{$fn}; + } + $ftp->quit(); + $i++; + } + return 0; +} + +# download stuff (protect from ^C) +if($totsize != 0) { + if (yesno('y', "\nDo you want to download the required files")) { + DOWNLOAD_TRY: while (1) { + print "Downloading files... use ^C to stop\n"; + eval { + if ((download() == 1) && + yesno('y', "\nDo you want to retry downloading at once")) { + next DOWNLOAD_TRY; + } + }; + if($@ =~ /Interrupted|Timeout/i ) { + # close the FTP connection if needed + if ((ref($ftp) =~ /Net::FTP/) and ($@ =~ /Interrupted/i)) { + $ftp->abort(); + $ftp->quit(); + undef $ftp; + } + print "FTP ERROR\n"; + if (yesno('y', "\nDo you want to retry downloading at once")) { + # get the first $fn that foreach would give: + # this is the one that got interrupted. + MY_ITER: foreach my $ffn (keys(%downloads)) { + $fn = $ffn; + last MY_ITER; + } + my $size = -s "$dldir/$fn"; + # partial download + if (yesno('y', "continue file: $fn (at $size)")) { + $downloads{$fn} = $size; + } else { + $downloads{$fn} = 0; + } + next DOWNLOAD_TRY; + } else { + $exit = 1; + last DOWNLOAD_TRY; + } + } elsif ($@) { + print "An error occurred ($@) : stopping download\n"; + } + last DOWNLOAD_TRY; + } + } +} + +# remove duplicate packages (keep latest versions) +# move half downloaded files out of the way +# delete corrupted files +print "\nProcessing downloaded files...(for corrupt/old/partial)\n"; +my %vers; # package => version +my %files; # package-version => files... + +# check a deb or split deb file +# return 1 if it a deb file, 2 if it is a split deb file +# else 0 +sub chkdeb($) { + my ($fn) = @_; + # check to see if it is a .deb file + if(!system("dpkg-deb --info $fn 2>&1 >/dev/null && dpkg-deb --contents $fn 2>&1 >/dev/null")) { + return 1; + } elsif(!system("dpkg-split --info $fn 2>&1 >/dev/null")) { + return 2; + } + return 0; +} +sub getdebinfo($) { + my ($fn) = @_; + my $type = chkdeb($fn); + my ($pkg, $ver); + if($type == 1) { + open(my $pkgfile_fh, '-|', "dpkg-deb --field $fn") + or die "cannot create pipe for 'dpkg-deb --field $fn'"; + my %fields = get_stanza($pkgfile_fh); + close($pkgfile_fh); + $pkg = $fields{'package'}; + $ver = $fields{'version'}; + return $pkg, $ver; + } elsif ( $type == 2) { + open(my $pkgfile_fh, '-|', "dpkg-split --info $fn") + or die "cannot create pipe for 'dpkg-split --info $fn'"; + while (<$pkgfile_fh>) { + /Part of package:\s*(\S+)/ and $pkg = $1; + /\.\.\. version:\s*(\S+)/ and $ver = $1; + } + close($pkgfile_fh); + return $pkg, $ver; + } + print "could not figure out type of $fn\n"; + return $pkg, $ver; +} + +# process deb file to make sure we only keep latest versions +sub prcdeb($$) { + my ($dir, $fn) = @_; + my ($pkg, $ver) = getdebinfo($fn); + if(!defined($pkg) || !defined($ver)) { + print "could not get package info from file\n"; + return 0; + } + if($vers{$pkg}) { + if (dcmpvers($vers{$pkg}, 'eq', $ver)) { + $files{$pkg . $ver} = [ $files{$pkg . $ver }, "$dir/$fn" ]; + } elsif (dcmpvers($vers{$pkg}, 'gt', $ver)) { + print "old version\n"; + unlink $fn; + } else { # else $ver is gt current version + foreach my $c (@{$files{$pkg . $vers{$pkg}}}) { + print "replaces: $c\n"; + unlink "$vardir/methods/ftp/$dldir/$c"; + } + $vers{$pkg} = $ver; + $files{$pkg . $ver} = [ "$dir/$fn" ]; + } + } else { + $vers{$pkg} = $ver; + $files{$pkg . $ver} = [ "$dir/$fn" ]; + } +} + +sub prcfile() { + my ($fn) = $_; + if (-f $fn and $fn ne '.') { + my $dir = '.'; + if (length($File::Find::dir) > length($dldir)) { + $dir = substr($File::Find::dir, length($dldir)+1); + } + print "$dir/$fn\n"; + if(defined($pkgfiles{"$dir/$fn"})) { + my @info = @{$pkgfiles{"$dir/$fn"}}; + my $size = -s $fn; + if($size == 0) { + print "zero length file\n"; + unlink $fn; + } elsif($size < $info[1]) { + print "partial file\n"; + rename $fn, "$fn.partial"; + } elsif(( (exists $md5sums{"$dldir/$fn"}) + and ($md5sums{"$dldir/$fn"} ne $info[0]) ) + or + (md5sum($fn) ne $info[0])) { + print "corrupt file\n"; + unlink $fn; + } else { + prcdeb($dir, $fn); + } + } elsif($fn =~ /.deb$/) { + if(chkdeb($fn)) { + prcdeb($dir, $fn); + } else { + print "corrupt file\n"; + unlink $fn; + } + } else { + print "non-debian file\n"; + } + } +} +find(\&prcfile, "$dldir/"); + +# install .debs +if (yesno('y', "\nDo you want to install the files fetched")) { + print "Installing files...\n"; + #Installing pre-dependent package before ! + my (@flds, $package, @filename, $r); + while (@flds = qx(dpkg --predep-package), $? == 0) { + foreach my $field (@flds) { + $field =~ s/\s*\n//; + $package = $field if $field =~ s/^Package: //i; + @filename = split / +/, $field if $field =~ s/^Filename: //i; + } + @filename = map { "$dldir/$_" } @filename; + next if (! @filename); + $r = system('dpkg', '-iB', '--', @filename); + if ($r) { print "DPKG ERROR\n"; $exit = 1; } + } + #Installing other packages after + $r = system('dpkg', '-iGREOB', $dldir); + if($r) { + print "DPKG ERROR\n"; + $exit = 1; + } +} + +sub removeinstalled { + my $fn = $_; + if (-f $fn and $fn ne '.') { + my $dir = '.'; + if (length($File::Find::dir) > length($dldir)) { + $dir = substr($File::Find::dir, length($dldir)+1); + } + if($fn =~ /.deb$/) { + my($pkg, $ver) = getdebinfo($fn); + if(!defined($pkg) || !defined($ver)) { + print "Could not get info for: $dir/$fn\n"; + } else { + if ($curpkgs{$pkg} and dcmpvers($ver, 'le', $curpkgs{$pkg})) { + print "deleting: $dir/$fn\n"; + unlink $fn; + } else { + print "leaving: $dir/$fn\n"; + } + } + } else { + print "non-debian: $dir/$fn\n"; + } + } +} + +# remove .debs that have been installed (query user) +# first need to reprocess status file +if (yesno('y', "\nDo you wish to delete the installed package (.deb) files?")) { + print "Removing installed files...\n"; + %curpkgs = (); + procstatus(); + find(\&removeinstalled, "$dldir/"); +} + +# remove whole ./debian directory if user wants to +if (yesno('n', "\nDo you want to remove $dldir directory?")) { + remove_tree($dldir); +} + +#Store useful md5sums +foreach my $file (keys %md5sums) { + next if -f $file; + delete $md5sums{$file}; +} +file_dump("$methdir/md5sums", Dumper(\%md5sums)); + +exit $exit; |