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package CPAN::HandleConfig; use strict; use vars qw(%can %keys $loading $VERSION); use File::Path (); use File::Spec (); use File::Basename (); use Carp (); =head1 NAME CPAN::HandleConfig - internal configuration handling for CPAN.pm =cut $VERSION = "5.5012"; # see also CPAN::Config::VERSION at end of file %can = ( commit => "Commit changes to disk", defaults => "Reload defaults from disk", help => "Short help about 'o conf' usage", init => "Interactive setting of all options", ); # Q: where is the "How do I add a new config option" HOWTO? # A1: svn diff -r 757:758 # where dagolden added test_report [git e997b71de88f1019a1472fc13cb97b1b7f96610f] # A2: svn diff -r 985:986 # where andk added yaml_module [git 312b6d9b12b1bdec0b6e282d853482145475021f] # A3: 1. add new config option to %keys below # 2. add a Pod description in CPAN::FirstTime in the DESCRIPTION # section; it should include a prompt line; see others for # examples # 3. add a "matcher" section in CPAN::FirstTime::init that includes # a prompt function; see others for examples # 4. add config option to documentation section in CPAN.pm %keys = map { $_ => undef } ( "allow_installing_module_downgrades", "allow_installing_outdated_dists", "applypatch", "auto_commit", "build_cache", "build_dir", "build_dir_reuse", "build_requires_install_policy", "bzip2", "cache_metadata", "check_sigs", "cleanup_after_install", "colorize_debug", "colorize_output", "colorize_print", "colorize_warn", "commandnumber_in_prompt", "commands_quote", "connect_to_internet_ok", "cpan_home", "curl", "dontload_hash", # deprecated after 1.83_68 (rev. 581) "dontload_list", "ftp", "ftp_passive", "ftp_proxy", "ftpstats_size", "ftpstats_period", "getcwd", "gpg", "gzip", "halt_on_failure", "histfile", "histsize", "http_proxy", "inactivity_timeout", "index_expire", "inhibit_startup_message", "keep_source_where", "load_module_verbosity", "lynx", "make", "make_arg", "make_install_arg", "make_install_make_command", "makepl_arg", "mbuild_arg", "mbuild_install_arg", "mbuild_install_build_command", "mbuildpl_arg", "ncftp", "ncftpget", "no_proxy", "pager", "password", "patch", "patches_dir", "perl5lib_verbosity", "plugin_list", "prefer_external_tar", "prefer_installer", "prefs_dir", "prerequisites_policy", "proxy_pass", "proxy_user", "pushy_https", "randomize_urllist", "recommends_policy", "scan_cache", "shell", "show_unparsable_versions", "show_upload_date", "show_zero_versions", "suggests_policy", "tar", "tar_verbosity", "term_is_latin", "term_ornaments", "test_report", "trust_test_report_history", "unzip", "urllist", "urllist_ping_verbose", "urllist_ping_external", "use_prompt_default", "use_sqlite", "username", "version_timeout", "wait_list", "wget", "yaml_load_code", "yaml_module", ); my %prefssupport = map { $_ => 1 } ( "allow_installing_module_downgrades", "allow_installing_outdated_dists", "build_requires_install_policy", "check_sigs", "make", "make_install_make_command", "prefer_installer", "test_report", ); # returns true on successful action sub edit { my($self,@args) = @_; return unless @args; CPAN->debug("self[$self]args[".join(" | ",@args)."]"); my($o,$str,$func,$args,$key_exists); $o = shift @args; if($can{$o}) { my $success = $self->$o(args => \@args); # o conf init => sub init => sub load unless ($success) { die "Panic: could not configure CPAN.pm for args [@args]. Giving up."; } } else { CPAN->debug("o[$o]") if $CPAN::DEBUG; unless (exists $keys{$o}) { $CPAN::Frontend->mywarn("Warning: unknown configuration variable '$o'\n"); } my $changed; # one day I used randomize_urllist for a boolean, so we must # list them explicitly --ak if (0) { } elsif ($o =~ /^(wait_list|urllist|dontload_list|plugin_list)$/) { # # ARRAYS # $func = shift @args; $func ||= ""; CPAN->debug("func[$func]args[@args]") if $CPAN::DEBUG; # Let's avoid eval, it's easier to comprehend without. if ($func eq "push") { push @{$CPAN::Config->{$o}}, @args; $changed = 1; } elsif ($func eq "pop") { pop @{$CPAN::Config->{$o}}; $changed = 1; } elsif ($func eq "shift") { shift @{$CPAN::Config->{$o}}; $changed = 1; } elsif ($func eq "unshift") { unshift @{$CPAN::Config->{$o}}, @args; $changed = 1; } elsif ($func eq "splice") { my $offset = shift @args || 0; my $length = shift @args || 0; splice @{$CPAN::Config->{$o}}, $offset, $length, @args; # may warn $changed = 1; } elsif ($func) { $CPAN::Config->{$o} = [$func, @args]; $changed = 1; } else { $self->prettyprint($o); } if ($changed) { if ($o eq "urllist") { # reset the cached values undef $CPAN::FTP::Thesite; undef $CPAN::FTP::Themethod; $CPAN::Index::LAST_TIME = 0; } elsif ($o eq "dontload_list") { # empty it, it will be built up again $CPAN::META->{dontload_hash} = {}; } } } elsif ($o =~ /_hash$/) { # # HASHES # if (@args==1 && $args[0] eq "") { @args = (); } elsif (@args % 2) { push @args, ""; } $CPAN::Config->{$o} = { @args }; $changed = 1; } else { # # SCALARS # if (defined $args[0]) { $CPAN::CONFIG_DIRTY = 1; $CPAN::Config->{$o} = $args[0]; $changed = 1; } $self->prettyprint($o) if exists $keys{$o} or defined $CPAN::Config->{$o}; } if ($changed) { if ($CPAN::Config->{auto_commit}) { $self->commit; } else { $CPAN::CONFIG_DIRTY = 1; $CPAN::Frontend->myprint("Please use 'o conf commit' to ". "make the config permanent!\n\n"); } } } } sub prettyprint { my($self,$k) = @_; my $v = $CPAN::Config->{$k}; if (ref $v) { my(@report); if (ref $v eq "ARRAY") { @report = map {"\t$_ \[$v->[$_]]\n"} 0..$#$v; } else { @report = map { sprintf "\t%-18s => %s\n", "[$_]", defined $v->{$_} ? "[$v->{$_}]" : "undef" } sort keys %$v; } $CPAN::Frontend->myprint( join( "", sprintf( " %-18s\n", $k ), @report ) ); } elsif (defined $v) { $CPAN::Frontend->myprint(sprintf " %-18s [%s]\n", $k, $v); } else { $CPAN::Frontend->myprint(sprintf " %-18s undef\n", $k); } } # generally, this should be called without arguments so that the currently # loaded config file is where changes are committed. sub commit { my($self,@args) = @_; CPAN->debug("args[@args]") if $CPAN::DEBUG; if ($CPAN::RUN_DEGRADED) { $CPAN::Frontend->mydie( "'o conf commit' disabled in ". "degraded mode. Maybe try\n". " !undef \$CPAN::RUN_DEGRADED\n" ); } my ($configpm, $must_reload); # XXX does anything do this? can it be simplified? -- dagolden, 2011-01-19 if (@args) { if ($args[0] eq "args") { # we have not signed that contract } else { $configpm = $args[0]; } } # use provided name or the current config or create a new MyConfig $configpm ||= require_myconfig_or_config() || make_new_config(); # commit to MyConfig if we can't write to Config if ( ! -w $configpm && $configpm =~ m{CPAN/Config\.pm} ) { my $myconfig = _new_config_name(); $CPAN::Frontend->mywarn( "Your $configpm file\n". "is not writable. I will attempt to write your configuration to\n" . "$myconfig instead.\n\n" ); $configpm = make_new_config(); $must_reload++; # so it gets loaded as $INC{'CPAN/MyConfig.pm'} } # XXX why not just "-w $configpm"? -- dagolden, 2011-01-19 my($mode); if (-f $configpm) { $mode = (stat $configpm)[2]; if ($mode && ! -w _) { _die_cant_write_config($configpm); } } $self->_write_config_file($configpm); require_myconfig_or_config() if $must_reload; #$mode = 0444 | ( $mode & 0111 ? 0111 : 0 ); #chmod $mode, $configpm; ###why was that so? $self->defaults; $CPAN::Frontend->myprint("commit: wrote '$configpm'\n"); $CPAN::CONFIG_DIRTY = 0; 1; } sub _write_config_file { my ($self, $configpm) = @_; my $msg; $msg = <<EOF if $configpm =~ m{CPAN/Config\.pm}; # This is CPAN.pm's systemwide configuration file. This file provides # defaults for users, and the values can be changed in a per-user # configuration file. EOF $msg ||= "\n"; my($fh) = FileHandle->new; rename $configpm, "$configpm~" if -f $configpm; open $fh, ">$configpm" or $CPAN::Frontend->mydie("Couldn't open >$configpm: $!"); $fh->print(qq[$msg\$CPAN::Config = \{\n]); foreach (sort keys %$CPAN::Config) { unless (exists $keys{$_}) { # do not drop them: forward compatibility! $CPAN::Frontend->mywarn("Unknown config variable '$_'\n"); next; } $fh->print( " '$_' => ", $self->neatvalue($CPAN::Config->{$_}), ",\n" ); } $fh->print("};\n1;\n__END__\n"); close $fh; return; } # stolen from MakeMaker; not taking the original because it is buggy; # bugreport will have to say: keys of hashes remain unquoted and can # produce syntax errors sub neatvalue { my($self, $v) = @_; return "undef" unless defined $v; my($t) = ref $v; unless ($t) { $v =~ s/\\/\\\\/g; return "q[$v]"; } if ($t eq 'ARRAY') { my(@m, @neat); push @m, "["; foreach my $elem (@$v) { push @neat, "q[$elem]"; } push @m, join ", ", @neat; push @m, "]"; return join "", @m; } return "$v" unless $t eq 'HASH'; my @m; foreach my $key (sort keys %$v) { my $val = $v->{$key}; push(@m,"q[$key]=>".$self->neatvalue($val)) ; } return "{ ".join(', ',@m)." }"; } sub defaults { my($self) = @_; if ($CPAN::RUN_DEGRADED) { $CPAN::Frontend->mydie( "'o conf defaults' disabled in ". "degraded mode. Maybe try\n". " !undef \$CPAN::RUN_DEGRADED\n" ); } my $done; for my $config (qw(CPAN/MyConfig.pm CPAN/Config.pm)) { if ($INC{$config}) { CPAN->debug("INC{'$config'}[$INC{$config}]") if $CPAN::DEBUG; CPAN::Shell->_reload_this($config,{reloforce => 1}); $CPAN::Frontend->myprint("'$INC{$config}' reread\n"); last; } } $CPAN::CONFIG_DIRTY = 0; 1; } =head2 C<< CLASS->safe_quote ITEM >> Quotes an item to become safe against spaces in shell interpolation. An item is enclosed in double quotes if: - the item contains spaces in the middle - the item does not start with a quote This happens to avoid shell interpolation problems when whitespace is present in directory names. This method uses C<commands_quote> to determine the correct quote. If C<commands_quote> is a space, no quoting will take place. if it starts and ends with the same quote character: leave it as it is if it contains no whitespace: leave it as it is if it contains whitespace, then if it contains quotes: better leave it as it is else: quote it with the correct quote type for the box we're on =cut { # Instead of patching the guess, set commands_quote # to the right value my ($quotes,$use_quote) = $^O eq 'MSWin32' ? ('"', '"') : (q{"'}, "'") ; sub safe_quote { my ($self, $command) = @_; # Set up quote/default quote my $quote = $CPAN::Config->{commands_quote} || $quotes; if ($quote ne ' ' and defined($command ) and $command =~ /\s/ and $command !~ /[$quote]/) { return qq<$use_quote$command$use_quote> } return $command; } } sub init { my($self,@args) = @_; CPAN->debug("self[$self]args[".join(",",@args)."]"); $self->load(do_init => 1, @args); 1; } # Loads CPAN::MyConfig or fall-back to CPAN::Config. Will not reload a file # if already loaded. Returns the path to the file %INC or else the empty string # # Note -- if CPAN::Config were loaded and CPAN::MyConfig subsequently # created, calling this again will leave *both* in %INC sub require_myconfig_or_config () { if ( $INC{"CPAN/MyConfig.pm"} || _try_loading("CPAN::MyConfig", cpan_home())) { return $INC{"CPAN/MyConfig.pm"}; } elsif ( $INC{"CPAN/Config.pm"} || _try_loading("CPAN::Config") ) { return $INC{"CPAN/Config.pm"}; } else { return q{}; } } # Load a module, but ignore "can't locate..." errors # Optionally take a list of directories to add to @INC for the load sub _try_loading { my ($module, @dirs) = @_; (my $file = $module) =~ s{::}{/}g; $file .= ".pm"; local @INC = @INC; for my $dir ( @dirs ) { if ( -f File::Spec->catfile($dir, $file) ) { unshift @INC, $dir; last; } } eval { require $file }; my $err_myconfig = $@; if ($err_myconfig and $err_myconfig !~ m#locate \Q$file\E#) { die "Error while requiring ${module}:\n$err_myconfig"; } return $INC{$file}; } # prioritized list of possible places for finding "CPAN/MyConfig.pm" sub cpan_home_dir_candidates { my @dirs; my $old_v = $CPAN::Config->{load_module_verbosity}; $CPAN::Config->{load_module_verbosity} = q[none]; if ($CPAN::META->has_usable('File::HomeDir')) { if ($^O ne 'darwin') { push @dirs, File::HomeDir->my_data; # my_data is ~/Library/Application Support on darwin, # which causes issues in the toolchain. } push @dirs, File::HomeDir->my_home; } # Windows might not have HOME, so check it first push @dirs, $ENV{HOME} if $ENV{HOME}; # Windows might have these instead push( @dirs, File::Spec->catpath($ENV{HOMEDRIVE}, $ENV{HOMEPATH}, '') ) if $ENV{HOMEDRIVE} && $ENV{HOMEPATH}; push @dirs, $ENV{USERPROFILE} if $ENV{USERPROFILE}; $CPAN::Config->{load_module_verbosity} = $old_v; my $dotcpan = $^O eq 'VMS' ? '_cpan' : '.cpan'; @dirs = map { File::Spec->catdir($_, $dotcpan) } grep { defined } @dirs; return wantarray ? @dirs : $dirs[0]; } sub load { my($self, %args) = @_; $CPAN::Be_Silent+=0; # protect against 'used only once' $CPAN::Be_Silent++ if $args{be_silent}; # do not use; planned to be removed in 2011 my $do_init = delete $args{do_init} || 0; my $make_myconfig = delete $args{make_myconfig}; $loading = 0 unless defined $loading; my $configpm = require_myconfig_or_config; my @miss = $self->missing_config_data; CPAN->debug("do_init[$do_init]loading[$loading]miss[@miss]") if $CPAN::DEBUG; return unless $do_init || @miss; if (@miss==1 and $miss[0] eq "pushy_https" && !$do_init) { $CPAN::Frontend->myprint(<<'END'); Starting with version 2.29 of the cpan shell, a new download mechanism is the default which exclusively uses cpan.org as the host to download from. The configuration variable pushy_https can be used to (de)select the new mechanism. Please read more about it and make your choice between the old and the new mechanism by running o conf init pushy_https Once you have done that and stored the config variable this dialog will disappear. END return; } # I'm not how we'd ever wind up in a recursive loop, but I'm leaving # this here for safety's sake -- dagolden, 2011-01-19 return if $loading; local $loading = ($loading||0) + 1; # Warn if we have a config file, but things were found missing if ($configpm && @miss && !$do_init) { if ($make_myconfig || ( ! -w $configpm && $configpm =~ m{CPAN/Config\.pm})) { $configpm = make_new_config(); $CPAN::Frontend->myprint(<<END); The system CPAN configuration file has provided some default values, but you need to complete the configuration dialog for CPAN.pm. Configuration will be written to <<$configpm>> END } else { $CPAN::Frontend->myprint(<<END); Sorry, we have to rerun the configuration dialog for CPAN.pm due to some missing parameters. Configuration will be written to <<$configpm>> END } } require CPAN::FirstTime; return CPAN::FirstTime::init($configpm || make_new_config(), %args); } # Creates a new, empty config file at the preferred location # Any existing will be renamed with a ".bak" suffix if possible # If the file cannot be created, an exception is thrown sub make_new_config { my $configpm = _new_config_name(); my $configpmdir = File::Basename::dirname( $configpm ); File::Path::mkpath($configpmdir) unless -d $configpmdir; if ( -w $configpmdir ) { #_#_# following code dumped core on me with 5.003_11, a.k. if( -f $configpm ) { my $configpm_bak = "$configpm.bak"; unlink $configpm_bak if -f $configpm_bak; if( rename $configpm, $configpm_bak ) { $CPAN::Frontend->mywarn(<<END); Old configuration file $configpm moved to $configpm_bak END } } my $fh = FileHandle->new; if ($fh->open(">$configpm")) { $fh->print("1;\n"); return $configpm; } } _die_cant_write_config($configpm); } sub _die_cant_write_config { my ($configpm) = @_; $CPAN::Frontend->mydie(<<"END"); WARNING: CPAN.pm is unable to write a configuration file. You must be able to create and write to '$configpm'. Aborting configuration. END } # From candidate directories, we would like (in descending preference order): # * the one that contains a MyConfig file # * one that exists (even without MyConfig) # * the first one on the list sub cpan_home { my @dirs = cpan_home_dir_candidates(); for my $d (@dirs) { return $d if -f "$d/CPAN/MyConfig.pm"; } for my $d (@dirs) { return $d if -d $d; } return $dirs[0]; } sub _new_config_name { return File::Spec->catfile(cpan_home(), 'CPAN', 'MyConfig.pm'); } # returns mandatory but missing entries in the Config sub missing_config_data { my(@miss); for ( "auto_commit", "build_cache", "build_dir", "cache_metadata", "cpan_home", "ftp_proxy", #"gzip", "http_proxy", "index_expire", #"inhibit_startup_message", "keep_source_where", #"make", "make_arg", "make_install_arg", "makepl_arg", "mbuild_arg", "mbuild_install_arg", ($^O eq "MSWin32" ? "" : "mbuild_install_build_command"), "mbuildpl_arg", "no_proxy", #"pager", "prerequisites_policy", "pushy_https", "scan_cache", #"tar", #"unzip", "urllist", ) { next unless exists $keys{$_}; push @miss, $_ unless defined $CPAN::Config->{$_}; } return @miss; } sub help { $CPAN::Frontend->myprint(q[ Known options: commit commit session changes to disk defaults reload default config values from disk help this help init enter a dialog to set all or a set of parameters Edit key values as in the following (the "o" is a literal letter o): o conf build_cache 15 o conf build_dir "/foo/bar" o conf urllist shift o conf urllist unshift ftp://ftp.foo.bar/ o conf inhibit_startup_message 1 ]); 1; #don't reprint CPAN::Config } sub cpl { my($word,$line,$pos) = @_; $word ||= ""; CPAN->debug("word[$word] line[$line] pos[$pos]") if $CPAN::DEBUG; my(@words) = split " ", substr($line,0,$pos+1); if ( defined($words[2]) and $words[2] =~ /list$/ and ( @words == 3 || @words == 4 && length($word) ) ) { return grep /^\Q$word\E/, qw(splice shift unshift pop push); } elsif (defined($words[2]) and $words[2] eq "init" and ( @words == 3 || @words >= 4 && length($word) )) { return sort grep /^\Q$word\E/, keys %keys; } elsif (@words >= 4) { return (); } my %seen; my(@o_conf) = sort grep { !$seen{$_}++ } keys %can, keys %$CPAN::Config, keys %keys; return grep /^\Q$word\E/, @o_conf; } sub prefs_lookup { my($self,$distro,$what) = @_; if ($prefssupport{$what}) { return $CPAN::Config->{$what} unless $distro and $distro->prefs and $distro->prefs->{cpanconfig} and defined $distro->prefs->{cpanconfig}{$what}; return $distro->prefs->{cpanconfig}{$what}; } else { $CPAN::Frontend->mywarn("Warning: $what not yet officially ". "supported for distroprefs, doing a normal lookup\n"); return $CPAN::Config->{$what}; } } { package CPAN::Config; ####::###### #hide from indexer # note: J. Nick Koston wrote me that they are using # CPAN::Config->commit although undocumented. I suggested # CPAN::Shell->o("conf","commit") even when ugly it is at least # documented # that's why I added the CPAN::Config class with autoload and # deprecated warning use strict; use vars qw($AUTOLOAD $VERSION); $VERSION = "5.5012"; # formerly CPAN::HandleConfig was known as CPAN::Config sub AUTOLOAD { ## no critic my $class = shift; # e.g. in dh-make-perl: CPAN::Config my($l) = $AUTOLOAD; $CPAN::Frontend->mywarn("Dispatching deprecated method '$l' to CPAN::HandleConfig\n"); $l =~ s/.*:://; CPAN::HandleConfig->$l(@_); } } 1; __END__ =head1 LICENSE This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. =cut # Local Variables: # mode: cperl # cperl-indent-level: 4 # End: # vim: ts=4 sts=4 sw=4: