IkiWiki/Setup.pm

   1 #!/usr/bin/perl
   2 # Ikiwiki setup files can be perl files that 'use IkiWiki::Setup::foo',
   3 # passing it some sort of configuration data. Or, they can contain
   4 # the module name at the top, without the 'use', and the whole file is
   5 # then fed into that module.
   6
   7 package IkiWiki::Setup;
   8
   9 use warnings;
  10 use strict;
  11 use IkiWiki;
  12 use open qw{:utf8 :std};
  13 use File::Spec;
  14
  15 sub load ($;$) {
  16         my $file=IkiWiki::possibly_foolish_untaint(shift);
  17         my $safemode=shift;
  18
  19         $config{setupfile}=File::Spec->rel2abs($file);
  20
  21         #translators: The first parameter is a filename, and the second
  22         #translators: is a (probably not translated) error message.
  23         open (IN, $file) || error(sprintf(gettext("cannot read %s: %s"), $file, $!));
  24         my $content;
  25         {
  26                 local $/=undef;
  27                 $content=<IN> || error("$file: $!");
  28         }
  29         close IN;
  30
  31         if ($content=~/((?:use|require)\s+)?IkiWiki::Setup::(\w+)/) {
  32                 $config{setuptype}=$2;
  33                 if ($1) {
  34                         error sprintf(gettext("cannot load %s in safe mode"), $file)
  35                                 if $safemode;
  36                         eval IkiWiki::possibly_foolish_untaint($content);
  37                         error("$file: ".$@) if $@;
  38                 }
  39                 else {
  40                         eval qq{require IkiWiki::Setup::$config{setuptype}};
  41                         error $@ if $@;
  42                         "IkiWiki::Setup::$config{setuptype}"->loaddump(IkiWiki::possibly_foolish_untaint($content));
  43                 }
  44         }
  45         else {
  46                 error sprintf(gettext("failed to parse %s"), $file);
  47         }
  48 }
  49
  50 sub dump ($) {
  51         my $file=IkiWiki::possibly_foolish_untaint(shift);
  52
  53         eval qq{require IkiWiki::Setup::$config{setuptype}};
  54         error $@ if $@;
  55         my @dump="IkiWiki::Setup::$config{setuptype}"->gendump(
  56                 "Setup file for ikiwiki.",
  57                 "",
  58                 "Passing this to ikiwiki --setup will make ikiwiki generate",
  59                 "wrappers and build the wiki.",
  60                 "",
  61                 "Remember to re-run ikiwiki --setup any time you edit this file.",
  62         );
  63
  64         open (OUT, ">", $file) || die "$file: $!";
  65         print OUT "$_\n" foreach @dump;
  66         close OUT;
  67 }
  68
  69 sub merge ($) {
  70         # Merge setup into existing config and untaint.
  71         my %setup=%{shift()};
  72
  73         if (exists $setup{add_plugins} && exists $config{add_plugins}) {
  74                 push @{$setup{add_plugins}}, @{$config{add_plugins}};
  75         }
  76         if (exists $setup{exclude}) {
  77                 push @{$config{wiki_file_prune_regexps}}, $setup{exclude};
  78         }
  79         foreach my $c (keys %setup) {
  80                 if (defined $setup{$c}) {
  81                         if (! ref $setup{$c} || ref $setup{$c} eq 'Regexp') {
  82                                 $config{$c}=IkiWiki::possibly_foolish_untaint($setup{$c});
  83                         }
  84                         elsif (ref $setup{$c} eq 'ARRAY') {
  85                                 if ($c eq 'wrappers') {
  86                                         # backwards compatability code
  87                                         $config{$c}=$setup{$c};
  88                                 }
  89                                 else {
  90                                         $config{$c}=[map { IkiWiki::possibly_foolish_untaint($_) } @{$setup{$c}}]
  91                                 }
  92                         }
  93                         elsif (ref $setup{$c} eq 'HASH') {
  94                                 foreach my $key (keys %{$setup{$c}}) {
  95                                         $config{$c}{$key}=IkiWiki::possibly_foolish_untaint($setup{$c}{$key});
  96                                 }
  97                         }
  98                 }
  99                 else {
 100                         $config{$c}=undef;
 101                 }
 102         }
 103
 104         if (length $config{cgi_wrapper}) {
 105                 push @{$config{wrappers}}, {
 106                         cgi => 1,
 107                         wrapper => $config{cgi_wrapper},
 108                         wrappermode => (defined $config{cgi_wrappermode} ? $config{cgi_wrappermode} : "06755"),
 109                 };
 110         }
 111 }
 112
 113 sub getsetup () {
 114         # Gets all available setup data from all plugins. Returns an
 115         # ordered list of [plugin, setup] pairs.
 116
 117         # disable logging to syslog while dumping, broken plugins may
 118         # whine when loaded
 119         my $syslog=$config{syslog};
 120         $config{syslog}=undef;
 121
 122         # Load all plugins, so that all setup options are available.
 123         my @plugins=IkiWiki::listplugins();
 124         foreach my $plugin (@plugins) {
 125                 eval { IkiWiki::loadplugin($plugin) };
 126                 if (exists $IkiWiki::hooks{checkconfig}{$plugin}{call}) {
 127                         my @s=eval { $IkiWiki::hooks{checkconfig}{$plugin}{call}->() };
 128                 }
 129         }
 130
 131         my %sections;
 132         foreach my $plugin (@plugins) {
 133                 if (exists $IkiWiki::hooks{getsetup}{$plugin}{call}) {
 134                         # use an array rather than a hash, to preserve order
 135                         my @s=eval { $IkiWiki::hooks{getsetup}{$plugin}{call}->() };
 136                         next unless @s;
 137
 138                         # set default section value (note use of shared
 139                         # hashref between array and hash)
 140                         my %s=@s;
 141                         if (! exists $s{plugin} || ! $s{plugin}->{section}) {
 142                                 $s{plugin}->{section}="other";
 143                         }
 144
 145                         # only the selected rcs plugin is included
 146                         if ($config{rcs} && $plugin eq $config{rcs}) {
 147                                 $s{plugin}->{section}="core";
 148                         }
 149                         elsif ($s{plugin}->{section} eq "rcs") {
 150                                 next;
 151                         }
 152
 153                         push @{$sections{$s{plugin}->{section}}}, [ $plugin, \@s ];
 154                 }
 155         }
 156
 157         $config{syslog}=$syslog;
 158
 159         return map { sort { $a->[0] cmp $b->[0] } @{$sections{$_}} }
 160                 sort { # core first, other last, otherwise alphabetical
 161                         ($b eq "core") <=> ($a eq "core")
 162                            ||
 163                         ($a eq "other") <=> ($b eq "other")
 164                            ||
 165                         $a cmp $b
 166                 } keys %sections;
 167 }
 168
 169 sub commented_dump ($$) {
 170         my $dumpline=shift;
 171         my $indent=shift;
 172
 173         my %setup=(%config);
 174         my @ret;
 175
 176         # disable logging to syslog while dumping
 177         $config{syslog}=undef;
 178
 179         eval q{use Text::Wrap};
 180         die $@ if $@;
 181
 182         my %section_plugins;
 183         push @ret, commented_dumpvalues($dumpline, $indent, \%setup, IkiWiki::getsetup());
 184         foreach my $pair (IkiWiki::Setup::getsetup()) {
 185                 my $plugin=$pair->[0];
 186                 my $setup=$pair->[1];
 187                 my %s=@{$setup};
 188                 my $section=$s{plugin}->{section};
 189                 push @{$section_plugins{$section}}, $plugin;
 190                 if (@{$section_plugins{$section}} == 1) {
 191                         push @ret, "", $indent.("#" x 70), "$indent# $section plugins",
 192                                 sub {
 193                                         wrap("$indent#   (", "$indent#    ",
 194                                                 join(", ", @{$section_plugins{$section}})).")"
 195                                 },
 196                                 $indent.("#" x 70);
 197                 }
 198
 199                 my @values=commented_dumpvalues($dumpline, $indent, \%setup, @{$setup});
 200                 if (@values) {
 201                         push @ret, "", "$indent# $plugin plugin", @values;
 202                 }
 203         }
 204
 205         return map { ref $_ ? $_->() : $_ } @ret;
 206 }
 207
 208 sub commented_dumpvalues ($$$@) {
 209         my $dumpline=shift;
 210         my $indent=shift;
 211         my $setup=shift;
 212         my @ret;
 213         while (@_) {
 214                 my $key=shift;
 215                 my %info=%{shift()};
 216
 217                 next if $key eq "plugin" || $info{type} eq "internal";
 218
 219                 push @ret, "$indent# ".$info{description} if exists $info{description};
 220
 221                 if (exists $setup->{$key} && defined $setup->{$key}) {
 222                         push @ret, $dumpline->($key, $setup->{$key}, $info{type}, "");
 223                         delete $setup->{$key};
 224                 }
 225                 elsif (exists $info{example}) {
 226                         push @ret, $dumpline->($key, $info{example}, $info{type}, "#");
 227                 }
 228                 else {
 229                         push @ret, $dumpline->($key, "", $info{type}, "#");
 230                 }
 231         }
 232         return @ret;
 233 }
 234
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