IkiWiki/Plugin/websetup.pm

   1 #!/usr/bin/perl
   2 package IkiWiki::Plugin::websetup;
   3
   4 use warnings;
   5 use strict;
   6 use IkiWiki 3.00;
   7
   8 sub import {
   9         hook(type => "getsetup", id => "websetup", call => \&getsetup);
  10         hook(type => "checkconfig", id => "websetup", call => \&checkconfig);
  11         hook(type => "sessioncgi", id => "websetup", call => \&sessioncgi);
  12         hook(type => "formbuilder_setup", id => "websetup",
  13              call => \&formbuilder_setup);
  14 }
  15
  16 sub getsetup () {
  17         return
  18                 plugin => {
  19                         safe => 1,
  20                         rebuild => 0,
  21                         section => "web",
  22                 },
  23                 websetup_force_plugins => {
  24                         type => "string",
  25                         example => [],
  26                         description => "list of plugins that cannot be enabled/disabled via the web interface",
  27                         safe => 0,
  28                         rebuild => 0,
  29                 },
  30                 websetup_unsafe => {
  31                         type => "string",
  32                         example => [],
  33                         description => "list of additional setup field keys to treat as unsafe",
  34                         safe => 0,
  35                         rebuild => 0,
  36                 },
  37                 websetup_show_unsafe => {
  38                         type => "boolean",
  39                         example => 1,
  40                         description => "show unsafe settings, read-only, in web interface?",
  41                         safe => 0,
  42                         rebuild => 0,
  43                 },
  44 }
  45
  46 sub checkconfig () {
  47         if (! exists $config{websetup_show_unsafe}) {
  48                 $config{websetup_show_unsafe}=1;
  49         }
  50 }
  51
  52 sub formatexample ($$) {
  53         my $example=shift;
  54         my $value=shift;
  55
  56         if (defined $value && length $value) {
  57                 return "";
  58         }
  59         elsif (defined $example && ! ref $example && length $example) {
  60                 return "<br/ ><small>Example: <tt>$example</tt></small>";
  61         }
  62         else {
  63                 return "";
  64         }
  65 }
  66
  67 sub issafe ($) {
  68         my $key=shift;
  69
  70         return ! grep { $_ eq $key } @{$config{websetup_unsafe}};
  71 }
  72
  73 sub showfields ($$$@) {
  74         my $form=shift;
  75         my $plugin=shift;
  76         my $enabled=shift;
  77
  78         my @show;
  79         my %plugininfo;
  80         while (@_) {
  81                 my $key=shift;
  82                 my %info=%{shift()};
  83
  84                 if ($key eq 'plugin') {
  85                         %plugininfo=%info;
  86                         next;
  87                 }
  88
  89                 # skip internal settings
  90                 next if defined $info{type} && $info{type} eq "internal";
  91                 # XXX hashes not handled yet
  92                 next if ref $config{$key} && ref $config{$key} eq 'HASH' || ref $info{example} eq 'HASH';
  93                 # maybe skip unsafe settings
  94                 next if ! ($config{websetup_show_unsafe} && $config{websetup_advanced}) &&
  95                         (! $info{safe} || ! issafe($key));
  96                 # maybe skip advanced settings
  97                 next if $info{advanced} && ! $config{websetup_advanced};
  98                 # these are handled specially, so don't show
  99                 next if $key eq 'add_plugins' || $key eq 'disable_plugins';
 100
 101                 push @show, $key, \%info;
 102         }
 103
 104         my $section=defined $plugin
 105                 ? sprintf(gettext("%s plugin:"), $plugininfo{section})." ".$plugin
 106                 : "main";
 107         my %enabledfields;
 108         my $shownfields=0;
 109
 110         my $plugin_forced=defined $plugin && (! $plugininfo{safe} ||
 111                 (exists $config{websetup_force_plugins} && grep { $_ eq $plugin } @{$config{websetup_force_plugins}}));
 112         if ($plugin_forced && ! $enabled) {
 113                 # plugin is forced disabled, so skip its settings
 114                 @show=();
 115         }
 116
 117         my $section_fieldset;
 118         if (defined $plugin) {
 119                 # Define the combined fieldset for the plugin's section.
 120                 # This ensures that this fieldset comes first.
 121                 $section_fieldset=sprintf(gettext("%s plugins"), $plugininfo{section});
 122                 $form->field(name => "placeholder.$plugininfo{section}",
 123                         type => "hidden",
 124                         fieldset => $section_fieldset);
 125         }
 126
 127         # show plugin toggle
 128         if (defined $plugin && (! $plugin_forced || $config{websetup_advanced})) {
 129                 my $name="enable.$plugin";
 130                 $form->field(
 131                         name => $name,
 132                         label => "",
 133                         type => "checkbox",
 134                         fieldset => $section,
 135                         options => [ [ 1 => sprintf(gettext("enable %s?"), $plugin) ]]
 136                 );
 137                 if (! $form->submitted) {
 138                         $form->field(name => $name, value => $enabled);
 139                 }
 140                 if ($plugin_forced) {
 141                         $form->field(name => $name, disabled => 1);
 142                 }
 143                 else {
 144                         $enabledfields{$name}=[$name, \%plugininfo];
 145                 }
 146         }
 147
 148         # show plugin settings
 149         while (@show) {
 150                 my $key=shift @show;
 151                 my %info=%{shift @show};
 152
 153                 my $description=$info{description};
 154                 if (exists $info{htmldescription}) {
 155                         $description=$info{htmldescription};
 156                 }
 157                 elsif (exists $info{link} && length $info{link}) {
 158                         if ($info{link} =~ /^\w+:\/\//) {
 159                                 $description="<a href=\"$info{link}\">$description</a>";
 160                         }
 161                         else {
 162                                 $description=htmllink("", "", $info{link}, noimageinline => 1, linktext => $description);
 163                         }
 164                 }
 165
 166                 # multiple plugins can have the same field
 167                 my $name=defined $plugin ? $plugin.".".$key : $section.".".$key;
 168
 169                 my $value=$config{$key};
 170                 if (! defined $value) {
 171                         $value="";
 172                 }
 173
 174                 if (ref $value eq 'ARRAY' || ref $info{example} eq 'ARRAY') {
 175                         $value=[(ref $value eq 'ARRAY' ? map { Encode::encode_utf8($_) }  @{$value} : "")];
 176                         push @$value, "", "" if $info{safe} && issafe($key); # blank items for expansion
 177                 }
 178                 else {
 179                         $value=Encode::encode_utf8($value);
 180                 }
 181
 182                 if ($info{type} eq "string") {
 183                         $form->field(
 184                                 name => $name,
 185                                 label => $description,
 186                                 comment => formatexample($info{example}, $value),
 187                                 type => "text",
 188                                 value => $value,
 189                                 size => 60,
 190                                 fieldset => $section,
 191                         );
 192                 }
 193                 elsif ($info{type} eq "pagespec") {
 194                         $form->field(
 195                                 name => $name,
 196                                 label => $description,
 197                                 comment => formatexample($info{example}, $value),
 198                                 type => "text",
 199                                 value => $value,
 200                                 size => 60,
 201                                 validate => \&IkiWiki::pagespec_valid,
 202                                 fieldset => $section,
 203                         );
 204                 }
 205                 elsif ($info{type} eq "integer") {
 206                         $form->field(
 207                                 name => $name,
 208                                 label => $description,
 209                                 comment => formatexample($info{example}, $value),
 210                                 type => "text",
 211                                 value => $value,
 212                                 size => 5,
 213                                 validate => '/^[0-9]+$/',
 214                                 fieldset => $section,
 215                         );
 216                 }
 217                 elsif ($info{type} eq "boolean") {
 218                         $form->field(
 219                                 name => $name,
 220                                 label => "",
 221                                 type => "checkbox",
 222                                 options => [ [ 1 => $description ] ],
 223                                 fieldset => $section,
 224                         );
 225                         if (! $form->submitted ||
 226                             ($info{advanced} && $form->submitted eq 'Advanced Mode')) {
 227                                 $form->field(name => $name, value => $value);
 228                         }
 229                 }
 230
 231                 if (! $info{safe} || ! issafe($key)) {
 232                         $form->field(name => $name, disabled => 1);
 233                 }
 234                 else {
 235                         $enabledfields{$name}=[$key, \%info];
 236                 }
 237                 $shownfields++;
 238         }
 239
 240         # if no fields were shown for the plugin, drop it into a combined
 241         # fieldset for its section
 242         if (defined $plugin && (! $plugin_forced || $config{websetup_advanced}) &&
 243             ! $shownfields) {
 244                 $form->field(name => "enable.$plugin", fieldset => $section_fieldset);
 245         }
 246
 247         return %enabledfields;
 248 }
 249
 250 sub enable_plugin ($) {
 251         my $plugin=shift;
 252
 253         $config{disable_plugins}=[grep { $_ ne $plugin } @{$config{disable_plugins}}];
 254         push @{$config{add_plugins}}, $plugin;
 255 }
 256
 257 sub disable_plugin ($) {
 258         my $plugin=shift;
 259
 260         $config{add_plugins}=[grep { $_ ne $plugin } @{$config{add_plugins}}];
 261         push @{$config{disable_plugins}}, $plugin;
 262 }
 263
 264 sub showform ($$) {
 265         my $cgi=shift;
 266         my $session=shift;
 267
 268         IkiWiki::needsignin($cgi, $session);
 269
 270         if (! defined $session->param("name") ||
 271             ! IkiWiki::is_admin($session->param("name"))) {
 272                 error(gettext("you are not logged in as an admin"));
 273         }
 274
 275         if (! exists $config{setupfile}) {
 276                 error(gettext("setup file for this wiki is not known"));
 277         }
 278
 279         eval q{use CGI::FormBuilder};
 280         error($@) if $@;
 281
 282         my $form = CGI::FormBuilder->new(
 283                 title => "setup",
 284                 name => "setup",
 285                 header => 0,
 286                 charset => "utf-8",
 287                 method => 'POST',
 288                 javascript => 0,
 289                 reset => 1,
 290                 params => $cgi,
 291                 fieldsets => [
 292                         [main => gettext("main")],
 293                 ],
 294                 action => IkiWiki::cgiurl(),
 295                 template => {type => 'div'},
 296                 stylesheet => 1,
 297         );
 298
 299         $form->field(name => "do", type => "hidden", value => "setup",
 300                 force => 1);
 301         $form->field(name => "rebuild_asked", type => "hidden");
 302         $form->field(name => "showadvanced", type => "hidden");
 303
 304         if ($form->submitted eq 'Basic Mode') {
 305                 $form->field(name => "showadvanced", type => "hidden",
 306                         value => 0, force => 1);
 307         }
 308         elsif ($form->submitted eq 'Advanced Mode') {
 309                 $form->field(name => "showadvanced", type => "hidden",
 310                         value => 1, force => 1);
 311         }
 312         my $advancedtoggle;
 313         if ($form->field("showadvanced")) {
 314                 $config{websetup_advanced}=1;
 315                 $advancedtoggle="Basic Mode";
 316         }
 317         else {
 318                 $config{websetup_advanced}=0;
 319                 $advancedtoggle="Advanced Mode";
 320         }
 321
 322         my $buttons=["Save Setup", $advancedtoggle, "Cancel"];
 323
 324         IkiWiki::decode_form_utf8($form);
 325         IkiWiki::run_hooks(formbuilder_setup => sub {
 326                 shift->(form => $form, cgi => $cgi, session => $session,
 327                         buttons => $buttons);
 328         });
 329
 330         my %fields=showfields($form, undef, undef, IkiWiki::getsetup());
 331
 332         # record all currently enabled plugins before all are loaded
 333         my %enabled_plugins=%IkiWiki::loaded_plugins;
 334
 335         # per-plugin setup
 336         require IkiWiki::Setup;
 337         foreach my $pair (IkiWiki::Setup::getsetup()) {
 338                 my $plugin=$pair->[0];
 339                 my $setup=$pair->[1];
 340
 341                 my %shown=showfields($form, $plugin, $enabled_plugins{$plugin}, @{$setup});
 342                 if (%shown) {
 343                         $fields{$_}=$shown{$_} foreach keys %shown;
 344                 }
 345         }
 346
 347         IkiWiki::decode_form_utf8($form);
 348
 349         if ($form->submitted eq "Cancel") {
 350                 IkiWiki::redirect($cgi, IkiWiki::baseurl(undef));
 351                 return;
 352         }
 353         elsif (($form->submitted eq 'Save Setup' || $form->submitted eq 'Rebuild Wiki') && $form->validate) {
 354                 # Push values from form into %config, avoiding unnecessary
 355                 # changes, and keeping track of which changes need a
 356                 # rebuild.
 357                 my %rebuild;
 358                 foreach my $field (keys %fields) {
 359                         my %info=%{$fields{$field}->[1]};
 360                         my $key=$fields{$field}->[0];
 361                         my @value=$form->field($field);
 362                         if (! @value) {
 363                                 @value=0;
 364                         }
 365
 366                         if (! $info{safe} || ! issafe($key)) {
 367                                 error("unsafe field $key"); # should never happen
 368                         }
 369
 370                         if (exists $info{rebuild} &&
 371                             ($info{rebuild} || ! defined $info{rebuild})) {
 372                                 $rebuild{$field}=$info{rebuild};
 373                         }
 374
 375                         if ($field=~/^enable\.(.*)/) {
 376                                 my $plugin=$1;
 377                                 $value[0]=0 if ! length $value[0];
 378                                 if ($value[0] != exists $enabled_plugins{$plugin}) {
 379                                         if ($value[0]) {
 380                                                 enable_plugin($plugin);
 381                                         }
 382                                         else {
 383                                                 disable_plugin($plugin);
 384
 385                                         }
 386                                 }
 387                                 else {
 388                                         delete $rebuild{$field};
 389                                 }
 390                                 next;
 391                         }
 392
 393                         if (ref $config{$key} eq "ARRAY" || ref $info{example} eq "ARRAY") {
 394                                 @value=sort grep { length $_ } @value;
 395                                 my @oldvalue=sort grep { length $_ }
 396                                         (defined $config{$key} ? @{$config{$key}} : ());
 397                                 my $same=(@oldvalue) == (@value);
 398                                 for (my $x=0; $same && $x < @value; $x++) {
 399                                         $same=0 if $value[$x] ne $oldvalue[$x];
 400                                 }
 401                                 if ($same) {
 402                                         delete $rebuild{$field};
 403                                 }
 404                                 else {
 405                                         $config{$key}=\@value;
 406                                 }
 407                         }
 408                         elsif (ref $config{$key} || ref $info{example}) {
 409                                 error("complex field $key"); # should never happen
 410                         }
 411                         else {
 412                                 if (defined $config{$key} && $config{$key} eq $value[0]) {
 413                                         delete $rebuild{$field};
 414                                 }
 415                                 elsif (! defined $config{$key} && ! length $value[0]) {
 416                                         delete $rebuild{$field};
 417                                 }
 418                                 elsif ((! defined $config{$key} || ! $config{$key}) &&
 419                                        ! $value[0] && $info{type} eq "boolean") {
 420                                         delete $rebuild{$field};
 421                                 }
 422                                 else {
 423                                         $config{$key}=$value[0];
 424                                 }
 425                         }
 426                 }
 427
 428                 if (%rebuild && ! $form->field("rebuild_asked")) {
 429                         my $required=0;
 430                         foreach my $field ($form->field) {
 431                                 $required=1 if $rebuild{$field};
 432                                 next if exists $rebuild{$field};
 433                                 $form->field(name => $field, type => "hidden");
 434                         }
 435                         if ($required) {
 436                                 $form->text(gettext("The configuration changes shown below require a wiki rebuild to take effect."));
 437                                 $buttons=["Rebuild Wiki", "Cancel"];
 438                         }
 439                         else {
 440                                 $form->text(gettext("For the configuration changes shown below to fully take effect, you may need to rebuild the wiki."));
 441                                 $buttons=["Rebuild Wiki", "Save Setup", "Cancel"];
 442                         }
 443                         $form->field(name => "rebuild_asked", value => 1, force => 1);
 444                         $form->reset(0); # doesn't really make sense here
 445                 }
 446                 else {
 447                         my $oldsetup=readfile($config{setupfile});
 448                         IkiWiki::Setup::dump($config{setupfile});
 449
 450                         IkiWiki::saveindex();
 451                         IkiWiki::unlockwiki();
 452
 453                         # Print the top part of a standard cgitemplate,
 454                         # then show the rebuild or refresh, live.
 455                         my $divider="\0";
 456                         my $html=IkiWiki::cgitemplate($cgi, "setup", $divider);
 457                         IkiWiki::printheader($session);
 458                         my ($head, $tail)=split($divider, $html, 2);
 459                         print $head."<pre>\n";
 460
 461                         my @command;
 462                         if ($form->submitted eq 'Rebuild Wiki') {
 463                                 @command=("ikiwiki", "-setup", $config{setupfile},
 464                                         "-rebuild", "-v");
 465                         }
 466                         else {
 467                                 @command=("ikiwiki", "-setup", $config{setupfile},
 468                                         "-refresh", "-wrappers", "-v");
 469                         }
 470
 471                         close STDERR;
 472                         open(STDERR, ">&STDOUT");
 473                         my $ret=system(@command);
 474                         print "\n<\/pre>";
 475                         if ($ret != 0) {
 476                                 print '<p class="error">'.
 477                                         sprintf(gettext("Error: %s exited nonzero (%s). Discarding setup changes."),
 478                                                 join(" ", @command), $ret).
 479                                         '</p>';
 480                                 open(OUT, ">", $config{setupfile}) || error("$config{setupfile}: $!");
 481                                 print OUT Encode::encode_utf8($oldsetup);
 482                                 close OUT;
 483                         }
 484
 485                         print $tail;
 486                         exit 0;
 487                 }
 488         }
 489
 490         IkiWiki::showform($form, $buttons, $session, $cgi);
 491 }
 492
 493 sub sessioncgi ($$) {
 494         my $cgi=shift;
 495         my $session=shift;
 496
 497         if ($cgi->param("do") eq "setup") {
 498                 showform($cgi, $session);
 499                 exit;
 500         }
 501 }
 502
 503 sub formbuilder_setup (@) {
 504         my %params=@_;
 505
 506         my $form=$params{form};
 507         if ($form->title eq "preferences" &&
 508             IkiWiki::is_admin($params{session}->param("name"))) {
 509                 push @{$params{buttons}}, "Setup";
 510                 if ($form->submitted && $form->submitted eq "Setup") {
 511                         showform($params{cgi}, $params{session});
 512                         exit;
 513                 }
 514         }
 515 }
 516
 517 1