/* XPM */ static char * step_orange_click_xpm[] = { "21 21 222 2", " c None", ". c #4B62AB", "+ c #435794", "@ c #35426A", "# c #293047", "$ c #20232C", "% c #1B1B1C", "& c #455896", "* c #374570", "= c #20232D", "- c #1A1A1A", "; c #1B1B1B", "> c #202020", ", c #2A2C34", "' c #3F4D78", ") c #333F64", "! c #1A1A1B", "~ c #1E1E1E", "{ c #242424", "] c #282828", "^ c #2A2A2A", "/ c #2C2C2C", "( c #303030", "_ c #343434", ": c #424C6D", "< c #303A5A", "[ c #272626", "} c #76726D", "| c #B6AB9E", "1 c #D5BFA6", "2 c #D3B491", "3 c #B18F69", "4 c #7A6144", "5 c #44403C", "6 c #3F3F3F", "7 c #434343", "8 c #4A5370", "9 c #3F3C3A", "0 c #B6AEA5", "a c #FEEEDB", "b c #FFE3C3", "c c #FDD5A7", "d c #F9C78C", "e c #F2B46C", "f c #E6983D", "g c #A9681D", "h c #5F5346", "i c #4F4F4F", "j c #525459", "k c #4D619E", "l c #302F2D", "m c #B7A796", "n c #FFE7CB", "o c #FFD9AD", "p c #FFC37E", "q c #FBB059", "r c #F5A54A", "s c #ED9B3E", "t c #E28922", "u c #D9780A", "v c #AC712F", "w c #615D59", "x c #5E5E5E", "y c #59627F", "z c #272727", "A c #7D6D5B", "B c #FED5A6", "C c #FFCF97", "D c #FFB662", "E c #FD9D30", "F c #F78F19", "G c #EE8814", "H c #E68515", "I c #DD7B0A", "J c #D8790C", "K c #DA811D", "L c #937450", "M c #6A6A6A", "N c #696C76", "O c #242730", "P c #252525", "Q c #333333", "R c #B99162", "S c #FCBF79", "T c #FCB25D", "U c #FA9929", "V c #F6890C", "W c #F08305", "X c #E87E04", "Y c #E07B05", "Z c #DA7605", "` c #D97A0E", " . c #DC8422", ".. c #BA8548", "+. c #7A7A7A", "@. c #7B7B7D", "#. c #272829", "$. c #2F2F2F", "%. c #3C3C3C", "&. c #D08F45", "*. c #F49B34", "=. c #F28A13", "-. c #ED8105", ";. c #E27B04", ">. c #DC7804", ",. c #D77505", "'. c #D97B10", "). c #DD8727", "!. c #CC8E48", "~. c #878787", "{. c #888888", "]. c #33363F", "^. c #383838", "/. c #444444", "(. c #C7791F", "_. c #E9891B", ":. c #EA8817", "<. c #E78009", "[. c #E47C04", "}. c #E07A04", "|. c #D87504", "1. c #D77607", "2. c #DA7D15", "3. c #DE8B2E", "4. c #CF924F", "5. c #949494", "6. c #939494", "7. c #3F465C", "8. c #404040", "9. c #4A4A4A", "0. c #AD6E26", "a. c #DF7C0A", "b. c #DF7B07", "c. c #DE7905", "d. c #DA7604", "e. c #D77404", "f. c #D8780B", "g. c #DB831F", "h. c #DF9038", "i. c #C99863", "j. c #A0A0A0", "k. c #999BA0", "l. c #47547D", "m. c #494949", "n. c #525252", "o. c #886742", "p. c #DB7F17", "q. c #DA7D13", "r. c #D97A0D", "s. c #D87709", "t. c #D87608", "u. c #DB801A", "v. c #DE8B2F", "w. c #E19440", "x. c #BFA385", "y. c #ADADAD", "z. c #9398AA", "A. c #4B5F9C", "B. c #51545B", "C. c #5A5A5A", "D. c #686460", "E. c #B67D3E", "F. c #DC8626", "G. c #DC8421", "H. c #DB811B", "I. c #DA7F19", "J. c #DC8523", "K. c #DE8C31", "L. c #E0943F", "M. c #D1A16B", "N. c #BAB6B2", "O. c #B8B8B8", "P. c #7381AE", "Q. c #515F8A", "R. c #616161", "S. c #6B6B6B", "T. c #857B6F", "U. c #BF8B52", "V. c #DE9039", "W. c #DF8F36", "X. c #DF8E35", "Y. c #DF8F37", "Z. c #E0923C", "`. c #E19542", " + c #D4A36E", ".+ c #C5BCB1", "++ c #C2C2C2", "@+ c #A6ABBB", "#+ c #5F677F", "$+ c #757575", "%+ c #828282", "&+ c #928F8B", "*+ c #B49879", "=+ c #CA9A65", "-+ c #D59A5A", ";+ c #D79C5C", ">+ c #D2A36F", ",+ c #CCB092", "'+ c #C7C4C0", ")+ c #C9C9C9", "!+ c #B5B8C4", "~+ c #5A6EAE", "{+ c #647095", "]+ c #86878C", "^+ c #979797", "/+ c #A2A2A2", "(+ c #ACACAC", "_+ c #B3B3B3", ":+ c #BBBBBB", "<+ c #C8C8C8", "[+ c #CACBCB", "}+ c #B0B5C4", "|+ c #5B6FAF", "1+ c #5669A7", "2+ c #7C85A3", "3+ c #9B9EA8", "4+ c #AFB0B2", "5+ c #B9B9B9", "6+ c #C0C0C1", "7+ c #BEBFC4", "8+ c #ABB0C2", "9+ c #7D8BB7", ". . . . . . . . . . . . . . . . . . . . . ", ". . . . . . . . . . . . . . . . . . . . . ", ". . . . . . + @ # $ % $ # @ & . . . . . . ", ". . . . . * = - - - - - ; > , ' . . . . . ", ". . . . ) ! - - - ~ { ] ^ / ( _ : . . . . ", ". . . < ! - - [ } | 1 2 3 4 5 6 7 8 . . . ", ". . + = - - 9 0 a b c d e f g h i j k . . ", ". . @ - - l m n o p q r s t u v w x y . . ", ". . # ; z A B C D E F G H I J K L M N . . ", ". . O P Q R S T U V W X Y Z ` ...+.@.. . ", ". . #.$.%.&.r *.=.-.X ;.>.,.'.).!.~.{.. . ", ". . ].^./.(._.:.<.[.}.>.|.1.2.3.4.5.6.. . ", ". . 7.8.9.0.a.b.c.>.d.e.,.f.g.h.i.j.k.. . ", ". . l.m.n.o.p.q.r.s.1.t.J u.v.w.x.y.z.. . ", ". . A.B.C.D.E.F.G.H.I.u.J.K.L.M.N.O.P.. . ", ". . . Q.R.S.T.U.V.W.X.Y.Z.`. +.+++@+. . . ", ". . . . #+$+%+&+*+=+-+;+>+,+'+)+!+~+. . . ", ". . . . . {+]+^+/+(+_+:+++<+[+}+|+. . . . ", ". . . . . . 1+2+3+4+5+6+7+8+9+. . . . . . ", ". . . . . . . . . . . . . . . . . . . . . ", ". . . . . . . . . . . . . . . . . . . . . "}; '>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 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package urpm::media;

# $Id$

use strict;
use urpm 'file_from_local_medium', 'is_local_medium';
use urpm::msg;
use urpm::util;
use urpm::removable;
use urpm::lock;
use MDV::Distribconf;


our @PER_MEDIA_OPT = qw(
    downloader
    ignore
    key-ids
    list
    media_info_dir
    mirrorlist
    name
    no-media-info
    noreconfigure
    priority-upgrade
    removable
    static
    synthesis
    update
    url
    verify-rpm
    virtual
    with-dir
    with_hdlist
    with_synthesis
    xml-info
);

my @xml_media_info = ('info', 'files', 'changelog');

my @media_info_prefix_suffix = (
    [ 'synthesis.hdlist', '.cz' ],
    [ 'hdlist', '.cz' ],
    [ 'descriptions', '' ],
    [ 'names', '' ],
    [ 'MD5SUM', '' ],
    (map { [ $_, '.xml.lzma' ] } @xml_media_info),
);


sub get_medium_option {
    my ($urpm, $medium, $option_name) = @_;

    defined $medium->{$option_name} ? $medium->{$option_name} : $urpm->{options}{$option_name};
}

sub _is_iso {
    my ($removable_dev) = @_;
    $removable_dev && $removable_dev =~ /\.iso$/i;
}

sub only_media_opts {
    my ($m) = @_;
    my %m = map { $_ => $m->{$_} } grep { defined $m->{$_} } @PER_MEDIA_OPT;
    \%m;
}
sub _only_media_opts_read {
    my ($m) = @_;
    my $c = only_media_opts($m);
    $c->{media_info_dir} ||= 'media_info';
    $c->{iso} = delete $c->{removable} if $c->{removable} && _is_iso($c->{removable});
    $c;
}
sub _only_media_opts_write {
    my ($m) = @_;
    my $c = only_media_opts($m);
    delete $c->{media_info_dir} if $c->{media_info_dir} eq 'media_info';
    delete $c->{url} if $c->{mirrorlist};
    $c->{removable} = delete $c->{iso} if $c->{iso};
    $c;
}

sub read_private_netrc {
    my ($urpm) = @_;

    my @words = split(/\s+/, scalar cat_($urpm->{private_netrc}));
    my @l;
    my $e;
    while (@words) {
	my $keyword = shift @words;
	if ($keyword eq 'machine') {
	    push @l, $e = { machine => shift(@words) };
	} elsif ($keyword eq 'default') {
	    push @l, $e = { default => '' };
	} elsif ($keyword eq 'login' || $keyword eq 'password' || $keyword eq 'account') {
	    $e->{$keyword} = shift(@words);
	} else {
	    $urpm->{error}("unknown netrc command $keyword");
	}
    }
    @l;
}

sub read_config_add_passwords {
    my ($urpm, $config) = @_;

    my @netrc = read_private_netrc($urpm) or return;
    foreach (grep { $_->{url} } @{$config->{media}}) {
	my $u = urpm::download::parse_url_with_login($_->{url}) or next;
	if (my ($e) = grep { ($_->{default} || $_->{machine} eq $u->{machine}) && $_->{login} eq $u->{login} } @netrc) {
	    $_->{url} = sprintf('%s://%s:%s@%s%s', $u->{proto}, $u->{login}, $e->{password}, $u->{machine}, $u->{dir});
	} else {
	    $urpm->{log}(sprintf('no password found for %s@%s', $u->{login}, $u->{machine}));
	}
    }
}

sub remove_passwords_and_write_private_netrc {
    my ($urpm, $config) = @_;

    my @l;
    foreach (grep { $_->{url} } @{$config->{media}}) {
	my $u = urpm::download::parse_url_with_login($_->{url}) or next;
	#- check whether a password is visible
	$u->{password} or next;

	push @l, $u;
	$_->{url} = sprintf('%s://%s@%s%s', $u->{proto}, $u->{login}, $u->{machine}, $u->{dir});
    }
    {
	my $fh = urpm::sys::open_safe($urpm, '>', $urpm->{private_netrc}) or return;
	foreach my $u (@l) {
	    printf $fh "machine %s login %s password %s\n", $u->{machine}, $u->{login}, $u->{password};
	}
    }
    chmod 0600, $urpm->{private_netrc};
}

#- handle deprecated way of saving passwords
sub recover_url_from_list {
    my ($urpm, $medium) = @_;

    my $list = delete $medium->{list} or return;
    my $statedir_list = "$urpm->{statedir}/$list";

    #- /./ is end of url marker in list file (typically generated by a
    #- find . -name "*.rpm" > list
    #- for exportable list file.
    if (my @probe = map { m!^(.*)/\./! || m!^(.*)/[^/]*$! } cat_($statedir_list)) {
	$urpm->{log}("recovering url from $statedir_list");
	($medium->{url}) = sort { length($a) <=> length($b) } @probe;
	$urpm->{modified} = 1; #- ensure urpmi.cfg is handled using only partially hidden url + netrc, since file list won't be generated anymore
	unlink $statedir_list;
    }
}

#- Loads /etc/urpmi/urpmi.cfg and performs basic checks.
#- Does not handle old format: <name> <url> [with <path_hdlist>]
sub read_config {
    my ($urpm, $nocheck) = @_;
    return if $urpm->{media}; #- media already loaded
    $urpm->{media} = [];
    my $config = urpm::cfg::load_config($urpm->{config})
	or $urpm->{fatal}(6, $urpm::cfg::err);

    #- per-media options
    read_config_add_passwords($urpm, $config);

    my @media;
    foreach my $m (@{$config->{media}}) {
	my $medium = _only_media_opts_read($m);

	if (!$medium->{url} && !$medium->{mirrorlist}) {
	    #- recover the url the old deprecated way...
	    #- only useful for migration, new urpmi.cfg will use netrc
	    recover_url_from_list($urpm, $medium);
	    $medium->{url} or $urpm->{error}("unable to find url in list file $medium->{name}, medium ignored");
	}

	push @media, $medium;
    }

    require File::Glob;
    # we can't use perl's glob() because we allow spaces in filename
    foreach my $conf_file (File::Glob::bsd_glob("$urpm->{configs_dir}/*.cfg")) {
	$urpm->{debug} and $urpm->{debug}("parsing: $conf_file");
	my $conf = urpm::cfg::load_ini_config_file_raw($conf_file);
	foreach my $medium (map { _only_media_opts_read($_) } @$conf) {
	    $medium->{conf_file} = $conf_file;
	    push @media, $medium;
	}
    }

    add_existing_medium($urpm, $_, $nocheck) foreach @media;

    eval { require urpm::ldap; urpm::ldap::load_ldap_media($urpm) };
}

#- if invalid, set {ignore}
sub check_existing_medium {
    my ($urpm, $medium) = @_;

    my $err;
    if (!$medium->{url} && !$medium->{mirrorlist}) { 
	$err = $medium->{virtual} ?
	  N("virtual medium \"%s\" should have a clear url, medium ignored",
			   $medium->{name}) :
	  N("unable to access list file of \"%s\", medium ignored", $medium->{name});
    } elsif (!$medium->{ignore} 
	     && !-r any_synthesis($urpm, $medium)) {
	if ($medium->{conf_file} && $< == 0) {
	    # no pb, we create on the fly
	    $medium->{force_auto_update} = 1;
	} else {
	    $err = N("unable to access synthesis file of \"%s\", medium ignored", $medium->{name});
	}
    }
    if ($err) {
	$medium->{ignore} = 1;
	$urpm->{error}($err);
    }
}

sub _migrate__with_synthesis {
    my ($medium, $with_synthesis) = @_;

    #- try to migrate to media_info_dir
    my $b = basename($with_synthesis);
    if ($b eq 'synthesis.hdlist.cz' || $b eq 'hdlist.cz') {
	$medium->{media_info_dir} = dirname($with_synthesis);
    } else {
	$with_synthesis =~ s/(synthesis\.)?(hdlist.*\.cz)$/synthesis.$2/;
	$medium->{with_synthesis} = $with_synthesis;
    }
}

#- probe medium to be used, take old medium into account too.
sub add_existing_medium {
    my ($urpm, $medium, $nocheck) = @_;

    if (name2medium($urpm, $medium->{name})) {
	$urpm->{error}(N("trying to override existing medium \"%s\", skipping", $medium->{name}));
	return;
    }

    if ($medium->{with_hdlist}) {
	_migrate__with_synthesis($medium, delete $medium->{with_hdlist});
	$urpm->{modified} = 1;
    }

    check_existing_medium($urpm, $medium) if !$nocheck;

    _migrate_removable_device($urpm, $medium);

    #- clear URLs for trailing /es.
    $medium->{url} and $medium->{url} =~ s|(.*?)/*$|$1|;

    push @{$urpm->{media}}, $medium;
}

sub file_from_file_url {
    my ($url) = @_;
    $url =~ m!^(?:file:/)?(/.*)! && $1;
}

sub _local_file {
    my ($medium) = @_;
    $medium->{url} && file_from_file_url($medium->{url});
}

sub _is_local_virtual {
    my ($medium) = @_;
    $medium->{virtual} && _local_file($medium);
}
sub _is_remote_virtual {
    my ($medium) = @_;
    $medium->{virtual} && !_local_file($medium);
}

sub _url_with_synthesis_basename {
    my ($medium) = @_;

    $medium->{with_synthesis}
      ? basename($medium->{with_synthesis})
      : 'synthesis.hdlist.cz';
}
sub _synthesis_dir_rel {
    my ($medium) = @_;
    $medium->{'no-media-info'} || $medium->{unknown_media_info} and return;

    $medium->{with_synthesis}
      ? "$medium->{with_synthesis}/.."
      : $medium->{media_info_dir};
}
sub _synthesis_dir {
    my ($medium) = @_;
    my $rel = _synthesis_dir_rel($medium) or return;

    my $base = file_from_local_medium($medium) || $medium->{url};
    reduce_pathname("$base/$rel");
}

# the difference between _valid_synthesis_dir and _synthesis_dir
# is only to handle upgrades from older urpmi.cfg where no {media_info_dir}
# meant no-media-info
sub _valid_synthesis_dir {
    my ($medium) = @_;
    my $dir = _synthesis_dir($medium);
    $dir && -d $dir;
}

sub _url_with_synthesis_rel {
    my ($medium) = @_;

    $medium->{with_synthesis} ||
      "$medium->{media_info_dir}/synthesis.hdlist.cz";

}
sub _url_with_synthesis {
    my ($medium) = @_;
    my $rel = _url_with_synthesis_rel($medium) or return;

    my $base = file_from_local_medium($medium) || $medium->{url};
    reduce_pathname("$base/$rel");
}

sub synthesis {
    my ($medium) = @_;
    statedir_media_info_basename($medium, 'synthesis.hdlist', '.cz');
}

sub statedir_media_info_basename {
    my ($medium, $prefix, $suffix) = @_;
    $medium->{name} && "$prefix.$medium->{name}$suffix";
}

sub statedir_media_info_dir {
    my ($urpm, $medium) = @_;
    $medium->{name} && "$urpm->{statedir}/$medium->{name}";
}

sub old_statedir_media_info_file {
    my ($urpm, $medium, $prefix, $suffix) = @_;
    $medium->{name} && "$urpm->{statedir}/" . statedir_media_info_basename($medium, $prefix, $suffix);
}
sub new_statedir_media_info_file {
    my ($urpm, $medium, $prefix, $suffix) = @_;
    my $dir = statedir_media_info_dir($urpm, $medium);
    $dir && "$dir/$prefix$suffix";
}
sub statedir_media_info_file {
    my ($urpm, $medium, $prefix, $suffix) = @_;
    my $dir = statedir_media_info_dir($urpm, $medium);
    -d $dir ? "$dir/$prefix$suffix" : old_statedir_media_info_file($urpm, $medium, $prefix, $suffix);
}
sub statedir_synthesis {
    my ($urpm, $medium) = @_;
    statedir_media_info_file($urpm, $medium, 'synthesis.hdlist', '.cz');
}
sub statedir_descriptions {
    my ($urpm, $medium) = @_;
    statedir_media_info_file($urpm, $medium, 'descriptions', '');
}
sub statedir_names {
    my ($urpm, $medium) = @_;
    old_statedir_media_info_file($urpm, $medium, 'names', '');
}
sub statedir_MD5SUM {
    my ($urpm, $medium) = @_;
    statedir_media_info_file($urpm, $medium, 'MD5SUM', '');
}
sub statedir_hdlist {
    my ($urpm, $medium) = @_;
    statedir_media_info_file($urpm, $medium, 'hdlist', '.cz');
}
sub statedir_xml_info {
    my ($urpm, $medium, $xml_info) = @_;
    statedir_media_info_file($urpm, $medium, $xml_info, '.xml.lzma');
}
sub cachedir_with_synthesis {
    my ($urpm, $medium) = @_;
    _url_with_synthesis($medium) && "$urpm->{cachedir}/partial/synthesis.hdlist.cz";
}
sub any_synthesis {
    my ($urpm, $medium) = @_;
    my $f = _is_local_virtual($medium) ? _url_with_synthesis($medium)
      : statedir_synthesis($urpm, $medium);
    -e $f && $f;
}
sub any_media_info_file {
    my ($urpm, $medium, $prefix, $suffix, $quiet, $o_callback) = @_;

    if (my $base = _local_file($medium)) {
	my $f = $medium->{with_synthesis}
	  ? reduce_pathname("$base/$prefix." . _synthesis_suffix($medium) . $suffix)
	  : _synthesis_dir($medium) . "/$prefix$suffix";

	if (! -e $f) {
	    # in some weird cases (iso on disk), the hdlist is not available where it should be,
	    # but we can use the statedir copy
	    $f = statedir_media_info_file($urpm, $medium, $prefix, $suffix);
	}

	-e $f && $f;
    } else {
	_any_media_info__or_download($urpm, $medium, $prefix, $suffix, $quiet, $o_callback);
    }
}
sub any_hdlist {
    my ($urpm, $medium, $quiet) = @_;
    any_media_info_file($urpm, $medium, 'hdlist', '.cz', $quiet, \&urpm::download::sync_logger);
}
sub any_xml_info {
    my ($urpm, $medium, $xml_info, $quiet, $o_callback) = @_;
    any_media_info_file($urpm, $medium, $xml_info, '.xml.lzma', $quiet, $o_callback || \&urpm::download::sync_logger);
}

sub name2medium {
    my ($urpm, $name) = @_;
    my ($medium) = grep { $_->{name} eq $name } @{$urpm->{media}};
    $medium;
}

sub userdirs {
    my ($urpm) = @_;
    my $prefix = urpm::userdir_prefix($urpm);
    grep { m!^\Q$prefix\E\d+$! && -d $_ && ! -l $_ } glob("$prefix*");
}

sub remove_user_media_info_files {
    my ($urpm, $medium) = @_;

    foreach my $dir (userdirs($urpm)) {
	require File::Glob;
	# we can't use perl's glob() because $medium->{name} can contain spaces
	my @files = map { File::Glob::bsd_glob("$dir/*.$medium->{name}.$_") } 'cz', 'xml.lzma' or next;

	$urpm->{log}("cleaning $dir");
	foreach (@files) {
	    unlink $_ or $urpm->{error}("removing $_ failed");
	}
    }
}

#- probe device associated with a removable device.
sub _migrate_removable_device {
    my ($urpm, $medium) = @_;

    $medium->{url} or return;

    # always drop {removable}, it is obsolete
    # (nb: for iso files, {removable} has already been renamed into {iso} internally)
    delete $medium->{removable};

    if (my $url = _migrate_removable_url($medium->{url})) {
	$medium->{url} = $url;
    } else {
	$urpm->{error}(N("failed to migrate removable device, ignoring media"));
	$medium->{ignore} = 1;
    }
}

sub _migrate_removable_url {
    my ($url) = @_;

    if ($url =~ /^removable/) {
	$url =~ s!^removable(.*?)://!/!;
	if ($url =~ s!/(mnt|media)/cd\w+/?!cdrom://!i) {
	    # success!
	} else {
	    return;
	}
    }
    $url;
}


#- Writes the urpmi.cfg file.
sub write_urpmi_cfg {
    my ($urpm) = @_;

    #- avoid trashing exiting configuration if it wasn't loaded
    $urpm->{media} or return;

    my %media_per_cfg;
    foreach (grep { !$_->{external} } @{$urpm->{media}}) {
	push @{$media_per_cfg{$_->{conf_file} || ''}}, _only_media_opts_write($_);
    }

    my $config = {
	#- global config options found in the config file, without the ones
	#- set from the command-line
	global => $urpm->{global_config},
	media => delete $media_per_cfg{''},
    };
    remove_passwords_and_write_private_netrc($urpm, $config);

    urpm::cfg::dump_config($urpm->{config}, $config)
	or $urpm->{fatal}(6, N("unable to write config file [%s]", $urpm->{config}));

    $urpm->{log}(N("wrote config file [%s]", $urpm->{config}));

    foreach my $conf_file (sort keys %media_per_cfg) {
	urpm::cfg::write_ini_config($conf_file, $media_per_cfg{$conf_file})
	    or $urpm->{fatal}(6, N("unable to write config file [%s]", $conf_file));

	$urpm->{log}(N("wrote config file [%s]", $conf_file));
    }

    #- everything should be synced now.
    delete $urpm->{modified};
}

sub write_config {
    my ($urpm) = @_;

    write_urpmi_cfg($urpm);
}

sub _tempignore {
    my ($medium, $ignore) = @_;
    $medium->{ignore} = $ignore;
}

#- read urpmi.cfg file as well as necessary synthesis files
#- options :
#-	root (deprecated, set directly $urpm->{root})
#-	cmdline_skiplist
#-      download_callback (used by _auto_update_media)
#-
#-	callback (urpmf)
#-	nodepslist (for urpmq, urpmf: when we don't need the synthesis)
#-	no_skiplist (urpmf)
#-
#-	synthesis (use this synthesis file, and only this synthesis file)
#-
#-	parallel
#-	usedistrib (otherwise uses urpmi.cfg)
#-	  media
#-	  excludemedia
#-	  sortmedia
#-
#-	  update
#-	  searchmedia
sub configure {
    my ($urpm, %options) = @_;

    clean($urpm);

    $options{parallel} && $options{usedistrib} and $urpm->{fatal}(1, N("Can't use parallel mode with use-distrib mode"));

    if ($options{parallel}) {
	require urpm::parallel;
	urpm::parallel::configure($urpm, $options{parallel});

	if (!$options{media} && $urpm->{parallel_handler}{media}) {
	    $options{media} = $urpm->{parallel_handler}{media};
	    $urpm->{log}->(N("using associated media for parallel mode: %s", $options{media}));
	}
    } else {
	#- nb: can't have both parallel and root
	$urpm->{root} = $options{root} if $options{root};
    }

    if ($urpm->{root} && ! -c "$urpm->{root}/dev/null") {
	mkdir "$urpm->{root}/dev";
	system("/bin/cp", "-a", '/dev/null', "$urpm->{root}/dev");
    }

    if ($options{synthesis}) {
	if ($options{synthesis} ne 'none') {
	    #- synthesis take precedence over media, update options.
	    $options{media} || $options{excludemedia} || $options{sortmedia} || $options{update} || $options{usedistrib} || $options{parallel} and
	      $urpm->{fatal}(1, N("--synthesis cannot be used with --media, --excludemedia, --sortmedia, --update, --use-distrib or --parallel"));

	    my $synthesis = $options{synthesis};
	    if ($synthesis !~ m!^/!) {
		require Cwd;
		$synthesis = Cwd::getcwd() . '/' . $synthesis;
	    }
	    my ($url, $with) = $synthesis =~ m!(.*)/+(media_info/+synthesis\.hdlist\.cz)$! ? ($1, $2) : 
	      (dirname($synthesis), basename($synthesis));

            $urpm->{media} = [];
	    add_medium($urpm, 'Virtual', $url, $with, %options, virtual => 1, on_the_fly => 1);
	}
    } elsif ($options{usedistrib}) {
            $urpm->{media} = [];
            add_distrib_media($urpm, "Virtual", $options{usedistrib}, %options, virtual => 1, on_the_fly => 1);
    } else {
	    read_config($urpm, '');
	    if (!$options{media} && $urpm->{options}{'default-media'}) {
		$options{media} = $urpm->{options}{'default-media'};
	    }
    }

	if ($options{media}) {
	    delete $_->{modified} foreach @{$urpm->{media} || []};
	    select_media($urpm, split /,/, $options{media});
	    foreach (@{$urpm->{media} || []}) {
		_tempignore($_, !$_->{modified});
	    }
	}
	if ($options{searchmedia}) {
	   foreach (select_media_by_name($urpm, [ split /,/, $options{searchmedia} ])) {
	       #- Ensure this media is selected
	       $_->{modified} = 1;
	       _tempignore($_, 0);
	       $_->{searchmedia} = 1;
	   }
	}
	if ($options{excludemedia}) {
	    delete $_->{modified} foreach @{$urpm->{media} || []};
	    foreach (select_media_by_name($urpm, [ split /,/, $options{excludemedia} ])) {
		$_->{modified} = 1;
		#- this is only a local ignore that will not be saved.
		_tempignore($_, 1);
	    }
	}
	if ($options{sortmedia}) {
	    my @sorted_media = map { select_media_by_name($urpm, [$_]) } split(/,/, $options{sortmedia});
	    my @remaining = difference2($urpm->{media}, \@sorted_media);
	    $urpm->{media} = [ @sorted_media, @remaining ];
	}
	_auto_update_media($urpm, %options);

	_pick_mirror_if_needed($urpm, $_, '') foreach non_ignored_media($urpm, $options{update});

	parse_media($urpm, \%options) if !$options{nodepslist};

    #- determine package to withdraw (from skip.list file) only if something should be withdrawn.
    if (!$options{nodepslist}) {
	_compute_flags_for_skiplist($urpm, $options{cmdline_skiplist}) if !$options{no_skiplist};
	_compute_flags_for_instlist($urpm);
    }
}

#- for remote "virtual" media
#- options: download_callback, nomd5sum, quiet, nopubkey
sub _auto_update_media {
    my ($urpm, %options) = @_;

    $options{callback} = delete $options{download_callback};

    foreach (grep { $_->{force_auto_update} || _is_remote_virtual($_) || $urpm->{options}{'auto-update'} } 
	       non_ignored_media($urpm, $options{update})) {
	_update_medium($urpm, $_, %options);
    }
}

sub non_ignored_media {
    my ($urpm, $b_only_marked_update) = @_;

    grep { !$_->{ignore} && (!$b_only_marked_update || $_->{update}) } @{$urpm->{media} || []};
}

sub all_media_to_update {
    my ($urpm, $b_only_marked_update) = @_;

    grep { !$_->{ignore}
	     && !$_->{static} && !urpm::is_cdrom_url($_->{url}) && !$_->{iso}
	     && (!$b_only_marked_update || $_->{update})
	} @{$urpm->{media} || []};
}

sub parse_media {
    my ($urpm, $options) = @_;

    foreach (non_ignored_media($urpm, $options->{update})) {
	delete @$_{qw(start end)};
	_parse_synthesis_or_ignore($urpm, $_, $options->{callback});

	if ($_->{searchmedia}) {
	    $urpm->{searchmedia} = 1;
	    $urpm->{log}(N("Search start: %s end: %s", $_->{start}, $_->{end}));
	}

        $< == 0 and _generate_medium_names($urpm, $_);
    }
}

sub _compute_flags_for_skiplist {
    my ($urpm, $cmdline_skiplist) = @_;
    my %uniq;
    $urpm->compute_flags(
	urpm::sys::get_packages_list($urpm->{skiplist}, $cmdline_skiplist),
	skip => 1,
	callback => sub {
	    my ($urpm, $pkg) = @_;
	    $pkg->is_arch_compat && ! exists $uniq{$pkg->fullname} or return;
	    $uniq{$pkg->fullname} = undef;
	    $urpm->{log}(N("skipping package %s", scalar($pkg->fullname)));
	},
    );
}

sub _compute_flags_for_instlist {
    my ($urpm) = @_;

    my %uniq;
    $urpm->compute_flags(
	urpm::sys::get_packages_list($urpm->{instlist}),
	disable_obsolete => 1,
	callback => sub {
	    my ($urpm, $pkg) = @_;
	    $pkg->is_arch_compat && ! exists $uniq{$pkg->fullname} or return;
	    $uniq{$pkg->fullname} = undef;
	    $urpm->{log}(N("would install instead of upgrade package %s", scalar($pkg->fullname)));
	},
    );

}

#- add a new medium, sync the config file accordingly.
#- returns the new medium's name. (might be different from the requested
#- name if index_name was specified)
#- options: ignore, index_name, nolock, update, virtual, media_info_dir, mirrorlist, with-dir, xml-info, on_the_fly
sub add_medium {
    my ($urpm, $name, $url, $with_synthesis, %options) = @_;

    #- make sure configuration has been read.
    $urpm->{media} or die "caller should have used ->read_config or ->configure first";

    #- if a medium with that name has already been found, we have to exit now
    if (defined $options{index_name}) {
	my ($i, $basename) = ($options{index_name}, $name);
	while (1) {
	    ++$i;
	    $name = $basename . ($i == 1 ? '' : $i);
	    last if !name2medium($urpm, $name);
	}
    } else {
	name2medium($urpm, $name) and $urpm->{fatal}(5, N("medium \"%s\" already exists", $name));
    }

    $url =~ s,/*$,,; #- clear URLs for trailing /es.

    #- creating the medium info.
    my $medium = { name => $name, 
		url => $url, 
		modified => !$options{ignore}, 
	    };
    foreach (qw(downloader update ignore media_info_dir mirrorlist with-dir xml-info)) {
	$medium->{$_} = $options{$_} if exists $options{$_};
    }

    #- those files must not be there (cf mdvbz#36267)
    _clean_statedir_medium_files($urpm, $medium);
    if (!($options{virtual} && _local_file($medium))
	  && !$urpm->{urpmi_root}) { # with --urpmi-root, we do not use statedir_media_info_file to allow compatibility with older urpmi
	mkdir statedir_media_info_dir($urpm, $medium), 0755;
    }

    if ($options{virtual}) {
	$medium->{virtual} = 1;
    } else {
	_migrate_removable_device($urpm, $medium);
    }

    if ($with_synthesis) {
	_migrate__with_synthesis($medium, $with_synthesis);
    } elsif (!$medium->{media_info_dir}) {
	if (!is_local_medium($medium)) {
	    $medium->{media_info_dir} = 'media_info';
	} else {
	    $medium->{unknown_media_info} = 1;
	}
    }

    #- local media have priority, other are added at the end.
    my $inserted;
    my $ignore_text = $medium->{ignore} ? ' ' . N("(ignored by default)") : '';
    if (_local_file($medium)) {
	#- insert before first remote medium
	@{$urpm->{media}} = map {  
	    if (!_local_file($_) && !$inserted) {
		$inserted = 1;
		$urpm->{$options{on_the_fly} ? 'log': 'info'}(N("adding medium \"%s\" before remote medium \"%s\"", $name, $_->{name}) . $ignore_text);
		$medium, $_;
	    } else { $_ }
	} @{$urpm->{media}};
    }
    if (!$inserted) {
	$urpm->{$options{on_the_fly} ? 'log': 'info'}(N("adding medium \"%s\"", $name) . $ignore_text);
	push @{$urpm->{media}}, $medium;
    }

    $urpm->{modified} = 1;

    $name;
}

#- add distribution media, according to url given.
#- returns the list of names of added media.
#- options :
#- - initial_number : when adding several numbered media, start with this number
#- - probe_with : force use of rpms instead of using synthesis
#- - ask_media : callback to know whether each media should be added
#- - only_updates : only add "update" media (used by rpmdrake)
#- - mirrorlist
#- other options are passed to add_medium(): ignore, nolock, virtual
sub add_distrib_media {
    my ($urpm, $name, $url, %options) = @_;

    #- make sure configuration has been read.
    $urpm->{media} or die "caller should have used ->read_config or ->configure first";

    my $distribconf;

    if ($url && urpm::is_local_url($url)) {
	$url = _migrate_removable_url($url) or return();
	my $m = { url => $url };
	urpm::removable::try_mounting_medium_($urpm, $m) or $urpm->{error}(N("directory %s does not exist", $url));

	$distribconf = MDV::Distribconf->new(file_from_file_url($url) || $url, undef);
	$distribconf->settree('mandriva');

	my $dir = file_from_local_medium($m);
	my $media_cfg = reduce_pathname("$dir/" . $distribconf->getpath(undef, 'infodir') . '/media.cfg');
	$distribconf->parse_mediacfg($media_cfg)
	    or $urpm->{error}(N("this location doesn't seem to contain any distribution")), return ();
    } else {
	if ($options{mirrorlist}) {
	    $url and die "unexpected url $url together with mirrorlist $options{mirrorlist}\n";
	}

	my $m = { mirrorlist => $options{mirrorlist}, url => $url };
	my $parse_ok;
	try__maybe_mirrorlist($urpm, $m, 'probe', sub {
	    $distribconf = _new_distribconf_and_download($urpm, $m);
	    $parse_ok = $distribconf && $distribconf->parse_mediacfg("$urpm->{cachedir}/partial/media.cfg");
	    $parse_ok;
	});
	$url = $m->{url};

	if ($distribconf) {
	    $parse_ok or $urpm->{error}(N("unable to parse media.cfg")), return();
	} else {   
	    $urpm->{error}(N("...retrieving failed: %s", $@));
	    $urpm->{error}(N("unable to access the distribution medium (no media.cfg file found)"));
	    return ();
	}
    }

    #- cosmetic update of name if it contains spaces.
    $name =~ /\s/ and $name .= ' ';

    my @newnames;
    #- at this point, we have found a media.cfg file, so parse it
    #- and create all necessary media according to it.
    my $medium_index = $options{initial_number} || 1;

    foreach my $media ($distribconf->listmedia) {
        my $media_name = $distribconf->getvalue($media, 'name') || '';

        if (my $media_arch = $distribconf->getvalue($media, 'arch')) {
            if (!URPM::archscore($media_arch)) {
                $urpm->{log}(N("skipping non compatible media `%s' (for %s)",
			       $media, $media_arch));
                next;
            }
        }

	my $is_update_media = $distribconf->getvalue($media, 'updates_for');
	if ($options{only_updates}) {
	    $is_update_media or next;
	}

        my $add_by_default = !$distribconf->getvalue($media, 'noauto');
	my $ignore;
        if ($options{ask_media}) {
            $options{ask_media}->($media_name, $add_by_default) or next;
        } else {
	    my $simple_rpms = !$distribconf->getvalue($media, 'rpms');
	    $add_by_default || $simple_rpms or next;
	    $ignore = !$add_by_default;
	}

	my $use_copied_synthesis = urpm::is_cdrom_url($url) || $urpm->{options}{use_copied_hdlist} || $distribconf->getvalue($media, 'use_copied_hdlist');
	my $with_synthesis = $use_copied_synthesis && offset_pathname(
		$url,
		$distribconf->getpath($media, 'path'),
	    ) . '/' . $distribconf->getpath($media, 'synthesis');

	push @newnames, add_medium($urpm,
	    $name ? "$media_name ($name$medium_index)" : $media_name,
	    reduce_pathname($distribconf->getfullpath($media, 'path')),
	    $with_synthesis, 
	    !$use_copied_synthesis ? (media_info_dir => 'media_info') : (),
	    !$use_copied_synthesis && $options{probe_with} ? ($options{probe_with} => 1) : (),
	    index_name => $name ? undef : 0,
	    $ignore ? (ignore => 1) : (),
	    %options,
	    # the following override %options
	    $options{mirrorlist} ? ('with-dir' => $distribconf->getpath($media, 'path')) : (),
	    update => $is_update_media ? 1 : undef,
	);
	++$medium_index;
    }
    return @newnames;
}

sub _new_distribconf_and_download {
    my ($urpm, $medium) = @_;

    my $distribconf = MDV::Distribconf->new($medium->{url}, undef);
    $distribconf->settree('mandriva');

    $urpm->{log}(N("retrieving media.cfg file..."));
    urpm::download::sync_rel_one($urpm, $medium,
				 $distribconf->getpath(undef, 'infodir') . '/media.cfg',
				 quiet => 1, preclean => 1) or return;
    $distribconf;
}

#- deprecated, use select_media_by_name instead
sub select_media {
    my $urpm = shift;
    my $options = {};
    if (ref $_[0]) { $options = shift }
    foreach (select_media_by_name($urpm, [ @_ ], $options->{strict_match})) {
	#- select medium by setting the modified flag, do not check ignore.
	$_->{modified} = 1;
    }
}

sub select_media_by_name {
    my ($urpm, $names, $b_strict_match) = @_;

    my %wanted = map { $_ => 1 } @$names;

    #- first the exact matches
    my @l = grep { delete $wanted{$_->{name}} } @{$urpm->{media}};

    #- check if some arguments don't correspond to the medium name.
    #- in such case, try to find the unique medium (or list candidate
    #- media found).
    foreach (keys %wanted) {
	my $q = quotemeta;
	my (@found, @foundi);
	my $regex  = $b_strict_match ? qr/^$q$/  : qr/$q/;
	my $regexi = $b_strict_match ? qr/^$q$/i : qr/$q/i;
	foreach my $medium (@{$urpm->{media}}) {
	    $medium->{name} =~ $regex  and push @found, $medium;
	    $medium->{name} =~ $regexi and push @foundi, $medium;
	}
	@found = @foundi if !@found;

	if (@found == 0) {
	    $urpm->{error}(N("trying to select nonexistent medium \"%s\"", $_));
	} else {
	    if (@found > 1) {
		$urpm->{log}(N("selecting multiple media: %s", join(", ", map { qq("$_->{name}") } @found)));
	    }
	    #- changed behaviour to select all occurences by default.
	    push @l, @found;
	}
    }
    @l;
}

#- deprecated, use remove_media instead
sub remove_selected_media {
    my ($urpm) = @_;

    remove_media($urpm, [ grep { $_->{modified} } @{$urpm->{media}} ]);
}

sub remove_media {
    my ($urpm, $to_remove) = @_;

    foreach my $medium (@$to_remove) {
	$urpm->{info}(N("removing medium \"%s\"", $medium->{name}));

	#- mark to re-write configuration.
	$urpm->{modified} = 1;

	_clean_statedir_medium_files($urpm, $medium);

	#- remove proxy settings for this media
	urpm::download::remove_proxy_media($medium->{name});
    }

    $urpm->{media} = [ difference2($urpm->{media}, $to_remove) ];
}

sub _clean_statedir_medium_files {
    my ($urpm, $medium) = @_;

    #- remove files associated with this medium.
    unlink grep { $_ } map { old_statedir_media_info_file($urpm, $medium, $_->[0], $_->[1]) } @media_info_prefix_suffix;

    my $dir = statedir_media_info_dir($urpm, $medium);
    -d $dir and urpm::sys::clean_dir($dir);

    remove_user_media_info_files($urpm, $medium);
}

sub _probe_with_try_list {
    my ($urpm, $medium, $f) = @_;

    $medium->{mirrorlist} and die "_probe_with_try_list does not handle mirrorlist\n";

    my @media_info_dirs = ('media_info', '.');

    my $base = file_from_local_medium($medium) || $medium->{url};

    foreach my $media_info_dir (@media_info_dirs) {
	my $file = "$media_info_dir/synthesis.hdlist.cz";
	my $url = reduce_pathname("$base/$file");
	if ($f->($url, $file)) {
	    $urpm->{debug} and $urpm->{debug}("found synthesis: $url");
	    $medium->{media_info_dir} = $media_info_dir;
	    delete $medium->{unknown_media_info};
	    return 1;
	}
    }
    undef;
}

sub may_reconfig_urpmi {
    my ($urpm, $medium) = @_;

    $medium->{url} && !urpm::is_cdrom_url($medium->{url}) or return; # we should handle mirrorlist?

    my $f;
    if (my $dir = file_from_file_url($medium->{url})) {
	$f = reduce_pathname("$dir/reconfig.urpmi");
    } else {
	$f = urpm::download::sync_rel_one($urpm, $medium, 'reconfig.urpmi', 
					  quiet => 1, preclean => 1) or return;
    }
    my $reconfigured = -s $f && reconfig_urpmi($urpm, $f, $medium);
    unlink $f if !is_local_medium($medium);
    $reconfigured;
}

#- read a reconfiguration file for urpmi, and reconfigure media accordingly
#- $rfile is the reconfiguration file (local), $name is the media name
#-
#- the format is similar to the RewriteRule of mod_rewrite, so:
#-    PATTERN REPLACEMENT [FLAG]
#- where FLAG can be L or N
#-
#- example of reconfig.urpmi:
#-    # this is an urpmi reconfiguration file
#-    /cooker /cooker/$ARCH
sub reconfig_urpmi {
    my ($urpm, $rfile, $medium) = @_;
    -r $rfile or return;

    my ($magic, @lines) = cat_($rfile);
    #- the first line of reconfig.urpmi must be magic, to be sure it's not an error file
    $magic =~ /^# this is an urpmi reconfiguration file/ or return undef;

    $urpm->{info}(N("reconfiguring urpmi for media \"%s\"", $medium->{name}));

    my @replacements;
    foreach (@lines) {
	chomp;
	s/^\s*//; s/#.*$//; s/\s*$//;
	$_ or next;
	my ($p, $r, $f) = split /\s+/, $_, 3;
	push @replacements, [ quotemeta $p, $r, $f || 1 ];
    }

    my $reconfigured = 0;
    my @reconfigurable = qw(url with_synthesis media_info_dir);

    my %orig = %$medium;

  URLS:
    foreach my $k (@reconfigurable) {
	foreach my $r (@replacements) {
	    if ($medium->{$k} =~ s/$r->[0]/$r->[1]/) {
		$reconfigured = 1;
		#- Flags stolen from mod_rewrite: L(ast), N(ext)
		if ($r->[2] =~ /L/) {
		    last;
		} elsif ($r->[2] =~ /N/) { #- dangerous option
		    redo URLS;
		}
	    }
	}
	#- check that the new url exists before committing changes (local mirrors)
	my $file = urpm::file_from_local_url($medium->{$k});
	if ($file && !-e $file) {
	    %$medium = %orig;
	    $reconfigured = 0;
	    $urpm->{log}(N("...reconfiguration failed"));
	    return;
	}
    }

    if ($reconfigured) {
	$urpm->{log}(N("reconfiguration done"));
	$urpm->{modified} = 1;
    }
    $reconfigured;
}

#- names.<media_name> is used by external progs (namely for bash-completion)
sub _generate_medium_names {
    my ($urpm, $medium) = @_;

    -e statedir_names($urpm, $medium) and return;

    my $fh = urpm::sys::open_safe($urpm, ">", statedir_names($urpm, $medium)) or return;

    foreach ($medium->{start} .. $medium->{end}) {
	my $pkg = $urpm->{depslist}[$_] or 
	  $urpm->{error}(N("Error generating names file: dependency %d not found", $_)), return;

	print $fh $pkg->name . "\n";
    }
}

sub _guess_synthesis_suffix {
    my ($url) = @_;
    $url =~ m!\bmedia/(\w+)/*\Z! && $1;
}

sub _synthesis_suffix {
    my ($medium) = @_;
    $medium->{with_synthesis} =~ /synthesis\.hdlist(.*?)(?:\.src)?\.cz$/ ? $1 : '';
}

sub _medium_is_up_to_date {
    my ($urpm, $medium) = @_;

    unlink cachedir_with_synthesis($urpm, $medium);

    $urpm->{info}(N("medium \"%s\" is up-to-date", $medium->{name}));

    #- the medium is now considered not modified.
    $medium->{modified} = 0;
}

sub _parse_synthesis {
    my ($urpm, $medium, $synthesis_file, $o_callback) = @_;

    -e $synthesis_file or return;

    $urpm->{log}(N("examining synthesis file [%s]", $synthesis_file));
    ($medium->{start}, $medium->{end}) = 
      $urpm->parse_synthesis($synthesis_file, $o_callback ? (callback => $o_callback) : @{[]});
}

sub _parse_synthesis_or_ignore {
    my ($urpm, $medium, $o_callback) = @_;

    _parse_synthesis($urpm, $medium, any_synthesis($urpm, $medium), $o_callback) or
      _ignore_medium_on_parse_error($urpm, $medium);
}

sub is_valid_medium {
    my ($medium) = @_;
    defined $medium->{start} && defined $medium->{end};
}

sub _ignore_medium_on_parse_error {
    my ($urpm, $medium) = @_;

    $urpm->{error}(N("problem reading synthesis file of medium \"%s\"", $medium->{name}));
    $medium->{ignore} = 1;
}

sub _copy_media_info_file {
    my ($urpm, $medium, $prefix, $suffix) = @_;

    my $name = "$prefix$suffix";
    my $path = _synthesis_dir($medium) . "/$prefix" . _synthesis_suffix($medium) . $suffix;
    -e $path or $path = file_from_local_medium($medium) . "/media_info/$name";

    my $result_file = "$urpm->{cachedir}/partial/$name";
    if (-e $path) {
	$urpm->{log}(N("copying [%s] for medium \"%s\"...", $path, $medium->{name}));
	copy_and_own($path, $result_file)
	  or $urpm->{error}(N("...copying failed")), return;
    }
    -s $result_file && $result_file;
}

sub _get_pubkey__local {
    my ($urpm, $medium) = @_;

    _copy_media_info_file($urpm, $medium, 'pubkey', '');
}

sub _download_pubkey {
    my ($urpm, $medium) = @_;

    _download_media_info_file($urpm, $medium, 'pubkey', '', { quiet => 1 });
}

# known options: quiet, callback
sub _download_media_info_file {
    my ($urpm, $medium, $prefix, $suffix, $options) = @_;

    my $versioned_prefix = do {
	my $version = urpm::md5sum::versioned_media_info_file($urpm, $medium, "$prefix$suffix");
	$version and $options->{is_versioned} = 1;
	$version ? "$version-$prefix" : $prefix;
    };

    my $tmp = _download_media_info_file_raw($urpm, $medium, 
					    $versioned_prefix, $suffix, $options) or return;
    my $result = dirname($tmp) . "/$prefix$suffix";
    $tmp eq $result or rename($tmp, $result) or return;
    $result;
}

sub _download_media_info_file_raw {
    my ($urpm, $medium, $prefix, $suffix, $options) = @_;

    my $name = "$prefix$suffix";
    my $result_file = "$urpm->{cachedir}/partial/$name";
    my $found;
    if (_synthesis_suffix($medium)) {
	my $local_name = $prefix . _synthesis_suffix($medium) . $suffix;

	if (urpm::download::sync_rel_to($urpm, $medium, 
					_synthesis_dir_rel($medium) . "/$local_name", $result_file,
					%$options)) {
	    $found = 1;
	}
    }
    if (!$found) {
	urpm::download::sync_rel_one($urpm, $medium, _synthesis_dir_rel($medium) . "/$name", 
				     %$options);
    }
    -s $result_file && $result_file;
}

sub get_descriptions_local {
    my ($urpm, $medium) = @_;

    unlink statedir_descriptions($urpm, $medium);

    my $dir = file_from_local_medium($medium);
    my $description_file = "$dir/media_info/descriptions"; #- new default location
    -e $description_file or $description_file = "$dir/../descriptions";
    -e $description_file or return;

    $urpm->{log}(N("copying description file of \"%s\"...", $medium->{name}));
    if (copy_and_own($description_file, statedir_descriptions($urpm, $medium))) {
	$urpm->{log}(N("...copying done"));
    } else {
	$urpm->{error}(N("...copying failed"));
	$medium->{ignore} = 1;
    }
}
#- not handling different mirrors since the file is not always available
sub get_descriptions_remote {
    my ($urpm, $medium) = @_;

    if (-e statedir_descriptions($urpm, $medium)) {
	unlink "$urpm->{cachedir}/partial/descriptions";
	urpm::sys::move_or_die($urpm, statedir_descriptions($urpm, $medium), "$urpm->{cachedir}/partial/descriptions");
    }
    my $result = urpm::download::sync_rel_one($urpm, $medium, 'media_info/descriptions', quiet => 1, preclean => 1);

    if ($result) {
	urpm::sys::move_or_die($urpm, $result, statedir_descriptions($urpm, $medium));
    }
}
sub get_synthesis__local {
    my ($urpm, $medium, $callback) = @_;

    my $f = cachedir_with_synthesis($urpm, $medium);
    unlink $f;
    $urpm->{log}(N("copying [%s] for medium \"%s\"...", _url_with_synthesis($medium), $medium->{name}));
    $callback and $callback->('copy', $medium->{name});
    if (copy_and_own(_url_with_synthesis($medium), $f)) {
	$callback and $callback->('done', $medium->{name});
	$urpm->{log}(N("...copying done"));
	if (file_size($f) < 20) {
	    $urpm->{error}(N("copy of [%s] failed (file is suspiciously small)", $f));
	    0;
	} else {
	    1;
	}
    } else {
	$callback and $callback->('failed', $medium->{name});
	#- force error, reported afterwards
	unlink $f;
	0;
    }
}
sub get_synthesis__remote {
    my ($urpm, $medium, $is_a_probe, $options) = @_;

    my $ok = try__maybe_mirrorlist($urpm, $medium, $is_a_probe, sub {
	_download_media_info_file($urpm, $medium, 'synthesis.hdlist', '.cz',
				  $options)
	    && _check_synthesis(cachedir_with_synthesis($urpm, $medium));
    });
    if (!$ok) {
	chomp(my $err = $@);
	$urpm->{error}(N("...retrieving failed: %s", $err));
    }

    $ok &&= check_synthesis_md5sum($urpm, $medium) if !$options->{force} && !$options->{nomd5sum};

    $ok;
}

sub _check_synthesis {
    my ($synthesis_file) = @_;

    file_size($synthesis_file) >= 20 or return;

    # check first 2 lines do not contain typical html code
    # this is useful for servers not returning a valid HTTP error (#39918)
    open(my $F, '<', $synthesis_file) or return;
    my $s = <$F>; $s .= <$F>; 
    $s !~ /<html>|<!DOCTYPE\s/i;
}

#- check copied/downloaded file has right signature.
sub check_synthesis_md5sum {
    my ($urpm, $medium) = @_;

    my $wanted_md5sum = urpm::md5sum::from_MD5SUM__or_warn($urpm, $medium->{parsed_md5sum}, 'synthesis.hdlist.cz');
    if ($wanted_md5sum) {
	$urpm->{log}(N("computing md5sum of retrieved source synthesis"));
	urpm::md5sum::compute(cachedir_with_synthesis($urpm, $medium)) eq $wanted_md5sum or
	    $urpm->{error}(N("retrieval of [%s] failed (md5sum mismatch)", _url_with_synthesis($medium))), return;
    }
    1;
}

sub _call_genhdlist2 {
    my ($urpm, $medium) = @_;

    !$medium->{with_synthesis} or $urpm->{fatal}(1, 'with_synthesis not handled with --probe-rpms');

    my $dir = file_from_local_medium($medium);

    system('genhdlist2', 
	   $urpm->{debug} ? '--verbose' : (), '--no-hdlist',
	   '--media_info-dir', "$urpm->{cachedir}/partial", $dir) == 0 
      or $urpm->{error}(N("genhdlist2 failed on %s", $dir)), return;

    1;
}

sub _is_statedir_MD5SUM_uptodate {
    my ($urpm, $medium, $new_MD5SUM) = @_;

    my $current_MD5SUM = statedir_MD5SUM($urpm, $medium);

    $urpm->{log}(N("comparing %s and %s", $new_MD5SUM, $current_MD5SUM));

    cat_($new_MD5SUM) eq cat_($current_MD5SUM);
}

#- options: callback, force, nomd5sum, probe_with
sub _update_medium__parse_if_unmodified__local {
    my ($urpm, $medium, $options) = @_;

    if ($options->{probe_with} ne 'rpms') {
	#- the directory given does not exist and may be accessible
	#- by mounting some other directory. Try to figure it out and mount
	#- everything that might be necessary.
	urpm::removable::try_mounting_medium($urpm, $medium) or return;
    }

    #- check for a reconfig.urpmi file (if not already reconfigured)
    if (!$medium->{noreconfigure}) {
	may_reconfig_urpmi($urpm, $medium);
    }

    #- try to probe for possible with_synthesis parameter, unless
    #- it is already defined (and valid).
    if (!_valid_synthesis_dir($medium) && $options->{probe_with} ne 'rpms') {
	_probe_with_try_list($urpm, $medium, sub {
	    my ($url) = @_;
	    -e $url or return;
	    if (file_size($url) >= 20) {
		1;
	    } else {
		$urpm->{error}(N("invalid hdlist file %s for medium \"%s\"", $url, $medium->{name}));
		0;
	    }
	});
    }

    if (_is_local_virtual($medium)) {
	#- syncing a local virtual medium is very simple :)
	1;
    } elsif ($options->{probe_with} eq 'rpms' || !_valid_synthesis_dir($medium)) {
	_call_genhdlist2($urpm, $medium) or return '';
	if (!$medium->{'no-media-info'}) {
	    $medium->{'no-media-info'} = 1;
	    $urpm->{modified} = 1;
	}
	1;
    } elsif (_valid_synthesis_dir($medium)) {
	my $new_MD5SUM = _synthesis_dir($medium) . '/MD5SUM';
	unlink "$urpm->{cachedir}/partial/MD5SUM";

	if (!$options->{nomd5sum} && file_size($new_MD5SUM) > 32) {	
	    if (!$options->{force} && _is_statedir_MD5SUM_uptodate($urpm, $medium, $new_MD5SUM)) {
	        _medium_is_up_to_date($urpm, $medium);
		return 'unmodified';
	    }

	    $urpm->{log}(N("copying MD5SUM file of \"%s\"...", $medium->{name}));
	    copy_and_own($new_MD5SUM, "$urpm->{cachedir}/partial/MD5SUM");
	    $medium->{parsed_md5sum} = urpm::md5sum::parse($new_MD5SUM);
	}

	my $ok = get_synthesis__local($urpm, $medium, $options->{callback});
	$ok &&= check_synthesis_md5sum($urpm, $medium) if !$options->{force} && !$options->{nomd5sum};
	
	if ($ok) {
	    1;
	} elsif ($urpm->{options}{'build-hdlist-on-error'}) {
	    #- if copying synthesis has failed, try to build it directly.
	    _call_genhdlist2($urpm, $medium) or return '';
	    1;
	} else {
	    _ignore_medium_on_parse_error($urpm, $medium);
	    '';
	}
    }
}

sub _download_MD5SUM {
    my ($urpm, $medium) = @_;

    urpm::download::sync_rel_one($urpm, $medium, 
				 _synthesis_dir_rel($medium) . '/MD5SUM',
				 quiet => 1, preclean => 1);
}

sub _download_MD5SUM_and_check {
    my ($urpm, $medium, $is_a_probe) = @_;

    my ($err, $cachedir_MD5SUM);
    require urpm::mirrors;
    try__maybe_mirrorlist($urpm, $medium, $is_a_probe, sub {
	$cachedir_MD5SUM = _download_MD5SUM($urpm, $medium) or $err = $@;
	$cachedir_MD5SUM && urpm::md5sum::check_file($cachedir_MD5SUM);
    }) and return $cachedir_MD5SUM;

    if ($cachedir_MD5SUM) {
	$urpm->{error}(N("invalid MD5SUM file (downloaded from %s)", _synthesis_dir($medium)));
    } else {
	$urpm->{error}(N("...retrieving failed: %s", $err));
	$is_a_probe and $urpm->{error}(N("no metadata found for medium \"%s\"", $medium->{name}));
    }
    undef;
}

#- options: callback, ask_retry, force, nomd5sum, probe_with, quiet
sub _update_medium__parse_if_unmodified__remote {
    my ($urpm, $medium, $options) = @_;

    my $updating = -e statedir_synthesis($urpm, $medium);

    #- examine if a distant MD5SUM file is available.
	if (!$options->{nomd5sum}) {
	    my $new_MD5SUM = _download_MD5SUM_and_check($urpm, $medium, !$updating);

	    if (!$new_MD5SUM) {
		#- check for a reconfig.urpmi file (if not already reconfigured)
		if (!$medium->{noreconfigure}) {
		    may_reconfig_urpmi($urpm, $medium)
		      and goto &_update_medium__parse_if_unmodified__remote;
		}
		return;
	    }
	    if ($options->{force} < 2 && _is_statedir_MD5SUM_uptodate($urpm, $medium, $new_MD5SUM)) {
		_medium_is_up_to_date($urpm, $medium);
		return 'unmodified';
	    }