package urpm::cfg; # $Id: cfg.pm 271299 2010-11-21 15:54:30Z peroyvind $ use strict; use warnings; use urpm::util; use urpm::msg 'N'; =head1 NAME urpm::cfg - routines to handle the urpmi configuration files =head1 SYNOPSIS =head1 DESCRIPTION =over =item load_config($file) Reads an urpmi configuration file and returns its contents in a hash ref : { media => [ { name => 'medium name 1', url => 'http://...', option => 'value', ... }, ], global => { # global options go here }, } Returns undef() in case of parsing error (and sets C<$urpm::cfg::err> to the appropriate error message.) =item dump_config($file, $config) Does the opposite: write the configuration file, from the same data structure. Returns 1 on success, 0 on failure. =cut #- implementations of the substitutions. arch and release are mdk-specific. #- XXX this is fragile code, it's an heuristic that depends on the format of #- /etc/release my ($arch, $release); sub _init_arch_release () { if (!$arch && !$release) { my $l = cat_('/etc/release') or return undef; ($release, $arch) = $l =~ /release (\d+\.?\d?).*for (\w+)/; $release = 'cauldron' if $l =~ /cauldron/i; } 1; } sub get_arch () { _init_arch_release(); $arch } sub get_release () { _init_arch_release(); $release } sub get_host () { my $h; if (open my $f, '/proc/sys/kernel/hostname') { $h = <$f>; close $f; } else { $h = $ENV{HOSTNAME} || `/bin/hostname`; } chomp $h; $h; } our $err; sub _syntax_error () { $err = N("syntax error in config file at line %s", $.) } sub substitute_back { my ($new, $old) = @_; return $new if !defined($old); return $old if expand_line($old) eq $new; return $new; } my %substitutions; sub expand_line { my ($line) = @_; unless (scalar keys %substitutions) { %substitutions = ( HOST => get_host(), ARCH => get_arch(), RELEASE => get_release(), ); } foreach my $sub (keys %substitutions) { $line =~ s/\$$sub\b/$substitutions{$sub}/g; } return $line; } my $no_para_option_regexp = 'update|ignore|synthesis|noreconfigure|no-suggests|no-media-info|static|virtual|disable-certificate-check'; sub load_config_raw { my ($file, $b_norewrite) = @_; my @blocks; my $block; $err = ''; -r $file or do { $err = N("unable to read config file [%s]", $file); return; }; foreach (cat_($file)) { chomp; next if /^\s*#/; #- comments s/^\s+//; s/\s+$//; $_ = expand_line($_) unless $b_norewrite; if ($_ eq '}') { #-{ if (!defined $block) { _syntax_error(); return; } push @blocks, $block; undef $block; } elsif (defined $block && /{$/) { #-} _syntax_error(); return; } elsif ($_ eq '{') { #-} Entering a global block $block = { name => '' }; } elsif (/^(.*?[^\\])\s+(?:(.*?[^\\])\s+)?{$/) { #- medium definition my ($name, $url) = (unquotespace($1), unquotespace($2)); if (any { $_->{name} eq $name } @blocks) { #- hmm, somebody fudged urpmi.cfg by hand. $err = N("medium `%s' is defined twice, aborting", $name); return; } $block = { name => $name, $url ? (url => $url) : @{[]} }; } elsif (/^(hdlist |list |with_hdlist |with_synthesis |with-dir |mirrorlist |media_info_dir |removable |md5sum |limit-rate |nb-of-new-unrequested-pkgs-between-auto-select-orphans-check |xml-info |excludepath |split-(?:level|length) |priority-upgrade |prohibit-remove |downloader |retry |default-media |download-all |tune-rpm |(?:curl|rsync|wget|prozilla|aria2)-options )\s*:\s*['"]?(.*?)['"]?$/x) { #- config values $block->{$1} = $2; } elsif (/^key[-_]ids\s*:\s*['"]?(.*?)['"]?$/) { $block->{'key-ids'} = $1; } elsif (/^(hdlist|synthesis)$/) { # ignored, kept for compatibility } elsif (/^($no_para_option_regexp)$/) { #- positive flags $block->{$1} = 1; } elsif (my ($no, $k, $v) = /^(no-)?( verify-rpm |norebuild |fuzzy |allow-(?:force|nodeps) |(?:pre|post)-clean |excludedocs |compress |keep |ignoresize |auto |strict-arch |nopubkey |resume)(?:\s*:\s*(.*))?$/x ) { #- boolean options my $yes = $no ? 0 : 1; $no = $yes ? 0 : 1; $v = '' unless defined $v; $block->{$k} = $v =~ /^(yes|on|1|)$/i ? $yes : $no; } elsif ($_ eq 'modified') { #- obsolete } else { warn "unknown line '$_'\n" if $_; } } \@blocks; } sub load_config { my ($file) = @_; my $blocks = load_config_raw($file); my ($media, $global) = partition { $_->{name} } @$blocks; ($global) = @$global; delete $global->{name}; { global => $global || {}, media => $media }; } sub dump_config { my ($file, $config) = @_; my %global = (name => '', %{$config->{global}}); dump_config_raw($file, [ %global ? \%global : @{[]}, @{$config->{media}} ]); } sub dump_config_raw { my ($file, $blocks) = @_; my $old_blocks = load_config_raw($file, 1); my $substitute_back = sub { my ($m, $field) = @_; my ($prev_block) = grep { $_->{name} eq $m->{name} } @$old_blocks; substitute_back($m->{$field}, $prev_block && $prev_block->{$field}); }; my @lines; foreach my $m (@$blocks) { my @l = map { if (/^($no_para_option_regexp)$/) { $_; } elsif ($_ ne 'priority') { "$_: " . $substitute_back->($m, $_); } } sort grep { $_ && $_ ne 'url' && $_ ne 'name' } keys %$m; my $name_url = $m->{name} ? join(' ', map { quotespace($_) } $m->{name}, $substitute_back->($m, 'url')) . ' ' : ''; push @lines, join("\n", $name_url . '{', (map { " $_" } @l), "}\n"); } output_safe($file, join("\n", @lines)) or do { $err = N("unable to write config file [%s]", $file); return 0; }; 1; } 1; __END__ =back =head1 COPYRIGHT Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005 MandrakeSoft SA Copyright (C) 2005-2010 Mandriva SA =cut