IkiWiki/Plugin/rename.pm

   1 #!/usr/bin/perl
   2 package IkiWiki::Plugin::rename;
   3
   4 use warnings;
   5 use strict;
   6 use IkiWiki 3.00;
   7
   8 sub import {
   9         hook(type => "getsetup", id => "rename", call => \&getsetup);
  10         hook(type => "formbuilder_setup", id => "rename", call => \&formbuilder_setup);
  11         hook(type => "formbuilder", id => "rename", call => \&formbuilder);
  12         hook(type => "sessioncgi", id => "rename", call => \&sessioncgi);
  13         hook(type => "rename", id => "rename", call => \&rename_subpages);
  14 }
  15
  16 sub getsetup () {
  17         return
  18                 plugin => {
  19                         safe => 1,
  20                         rebuild => 0,
  21                         section => "web",
  22                 },
  23 }
  24
  25 sub check_canrename ($$$$$$) {
  26         my $src=shift;
  27         my $srcfile=shift;
  28         my $dest=shift;
  29         my $destfile=shift;
  30         my $q=shift;
  31         my $session=shift;
  32
  33         my $attachment=! defined pagetype($pagesources{$src});
  34
  35         # Must be a known source file.
  36         if (! exists $pagesources{$src}) {
  37                 error(sprintf(gettext("%s does not exist"),
  38                         htmllink("", "", $src, noimageinline => 1)));
  39         }
  40
  41         # Must exist on disk, and be a regular file.
  42         if (! -e "$config{srcdir}/$srcfile") {
  43                 error(sprintf(gettext("%s is not in the srcdir, so it cannot be renamed"), $srcfile));
  44         }
  45         elsif (-l "$config{srcdir}/$srcfile" && ! -f _) {
  46                 error(sprintf(gettext("%s is not a file"), $srcfile));
  47         }
  48
  49         # Must be editable.
  50         IkiWiki::check_canedit($src, $q, $session);
  51         if ($attachment) {
  52                 if (IkiWiki::Plugin::attachment->can("check_canattach")) {
  53                         IkiWiki::Plugin::attachment::check_canattach($session, $src, "$config{srcdir}/$srcfile");
  54                 }
  55                 else {
  56                         error("renaming of attachments is not allowed");
  57                 }
  58         }
  59
  60         # Dest checks can be omitted by passing undef.
  61         if (defined $dest) {
  62                 if ($srcfile eq $destfile) {
  63                         error(gettext("no change to the file name was specified"));
  64                 }
  65
  66                 # Must be a legal filename.
  67                 if (IkiWiki::file_pruned($destfile)) {
  68                         error(sprintf(gettext("illegal name")));
  69                 }
  70
  71                 # Must not be a known source file.
  72                 if ($src ne $dest && exists $pagesources{$dest}) {
  73                         error(sprintf(gettext("%s already exists"),
  74                                 htmllink("", "", $dest, noimageinline => 1)));
  75                 }
  76
  77                 # Must not exist on disk already.
  78                 if (-l "$config{srcdir}/$destfile" || -e _) {
  79                         error(sprintf(gettext("%s already exists on disk"), $destfile));
  80                 }
  81
  82                 # Must be editable.
  83                 IkiWiki::check_canedit($dest, $q, $session);
  84                 if ($attachment) {
  85                         # Note that $srcfile is used here, not $destfile,
  86                         # because it wants the current file, to check it.
  87                         IkiWiki::Plugin::attachment::check_canattach($session, $dest, "$config{srcdir}/$srcfile");
  88                 }
  89         }
  90
  91         my $canrename;
  92         IkiWiki::run_hooks(canrename => sub {
  93                 return if defined $canrename;
  94                 my $ret=shift->(cgi => $q, session => $session,
  95                         src => $src, srcfile => $srcfile,
  96                         dest => $dest, destfile => $destfile);
  97                 if (defined $ret) {
  98                         if ($ret eq "") {
  99                                 $canrename=1;
 100                         }
 101                         elsif (ref $ret eq 'CODE') {
 102                                 $ret->();
 103                                 $canrename=0;
 104                         }
 105                         elsif (defined $ret) {
 106                                 error($ret);
 107                                 $canrename=0;
 108                         }
 109                 }
 110         });
 111 }
 112
 113 sub rename_form ($$$) {
 114         my $q=shift;
 115         my $session=shift;
 116         my $page=shift;
 117
 118         eval q{use CGI::FormBuilder};
 119         error($@) if $@;
 120         my $f = CGI::FormBuilder->new(
 121                 name => "rename",
 122                 title => sprintf(gettext("rename %s"), pagetitle($page)),
 123                 header => 0,
 124                 charset => "utf-8",
 125                 method => 'POST',
 126                 javascript => 0,
 127                 params => $q,
 128                 action => $config{cgiurl},
 129                 stylesheet => 1,
 130                 fields => [qw{do page new_name attachment}],
 131         );
 132
 133         $f->field(name => "do", type => "hidden", value => "rename", force => 1);
 134         $f->field(name => "sid", type => "hidden", value => $session->id,
 135                 force => 1);
 136         $f->field(name => "page", type => "hidden", value => $page, force => 1);
 137         $f->field(name => "new_name", value => pagetitle($page, 1), size => 60);
 138         if (!$q->param("attachment")) {
 139                 # insert the standard extensions
 140                 my @page_types;
 141                 if (exists $IkiWiki::hooks{htmlize}) {
 142                         foreach my $key (grep { !/^_/ } keys %{$IkiWiki::hooks{htmlize}}) {
 143                                 push @page_types, [$key, $IkiWiki::hooks{htmlize}{$key}{longname} || $key];
 144                         }
 145                 }
 146                 @page_types=sort @page_types;
 147
 148                 # make sure the current extension is in the list
 149                 my ($ext) = $pagesources{$page}=~/\.([^.]+)$/;
 150                 if (! $IkiWiki::hooks{htmlize}{$ext}) {
 151                         unshift(@page_types, [$ext, $ext]);
 152                 }
 153
 154                 $f->field(name => "type", type => 'select',
 155                         options => \@page_types,
 156                         value => $ext, force => 1);
 157
 158                 foreach my $p (keys %pagesources) {
 159                         if ($pagesources{$p}=~m/^\Q$page\E\//) {
 160                                 $f->field(name => "subpages",
 161                                         label => "",
 162                                         type => "checkbox",
 163                                         options => [ [ 1 => gettext("Also rename SubPages and attachments") ] ],
 164                                         value => 1,
 165                                         force => 1);
 166                                 last;
 167                         }
 168                 }
 169         }
 170         $f->field(name => "attachment", type => "hidden");
 171
 172         return $f, ["Rename", "Cancel"];
 173 }
 174
 175 sub rename_start ($$$$) {
 176         my $q=shift;
 177         my $session=shift;
 178         my $attachment=shift;
 179         my $page=shift;
 180
 181         check_canrename($page, $pagesources{$page}, undef, undef,
 182                 $q, $session);
 183
 184         # Save current form state to allow returning to it later
 185         # without losing any edits.
 186         # (But don't save what button was submitted, to avoid
 187         # looping back to here.)
 188         # Note: "_submit" is CGI::FormBuilder internals.
 189         $q->param(-name => "_submit", -value => "");
 190         $session->param(postrename => scalar $q->Vars);
 191         IkiWiki::cgi_savesession($session);
 192
 193         if (defined $attachment) {
 194                 $q->param(-name => "attachment", -value => $attachment);
 195         }
 196         my ($f, $buttons)=rename_form($q, $session, $page);
 197         IkiWiki::showform($f, $buttons, $session, $q);
 198         exit 0;
 199 }
 200
 201 sub postrename ($;$$$) {
 202         my $session=shift;
 203         my $src=shift;
 204         my $dest=shift;
 205         my $attachment=shift;
 206
 207         # Load saved form state and return to edit page.
 208         my $postrename=CGI->new($session->param("postrename"));
 209         $session->clear("postrename");
 210         IkiWiki::cgi_savesession($session);
 211
 212         if (defined $dest) {
 213                 if (! $attachment) {
 214                         # They renamed the page they were editing. This requires
 215                         # fixups to the edit form state.
 216                         # Tweak the edit form to be editing the new page.
 217                         $postrename->param("page", $dest);
 218                 }
 219
 220                 # Update edit form content to fix any links present
 221                 # on it.
 222                 $postrename->param("editcontent",
 223                         renamepage_hook($dest, $src, $dest,
 224                                  $postrename->param("editcontent")));
 225
 226                 # Get a new edit token; old was likely invalidated.
 227                 $postrename->param("rcsinfo",
 228                         IkiWiki::rcs_prepedit($pagesources{$dest}));
 229         }
 230
 231         IkiWiki::cgi_editpage($postrename, $session);
 232 }
 233
 234 sub formbuilder (@) {
 235         my %params=@_;
 236         my $form=$params{form};
 237
 238         if (defined $form->field("do") && ($form->field("do") eq "edit" ||
 239             $form->field("do") eq "create")) {
 240                 IkiWiki::decode_form_utf8($form);
 241                 my $q=$params{cgi};
 242                 my $session=$params{session};
 243
 244                 if ($form->submitted eq "Rename" && $form->field("do") eq "edit") {
 245                         rename_start($q, $session, 0, $form->field("page"));
 246                 }
 247                 elsif ($form->submitted eq "Rename Attachment") {
 248                         my @selected=map { Encode::decode_utf8($_) } $q->param("attachment_select");
 249                         if (@selected > 1) {
 250                                 error(gettext("Only one attachment can be renamed at a time."));
 251                         }
 252                         elsif (! @selected) {
 253                                 error(gettext("Please select the attachment to rename."))
 254                         }
 255                         rename_start($q, $session, 1, $selected[0]);
 256                 }
 257         }
 258 }
 259
 260 my $renamesummary;
 261
 262 sub formbuilder_setup (@) {
 263         my %params=@_;
 264         my $form=$params{form};
 265         my $q=$params{cgi};
 266
 267         if (defined $form->field("do") && ($form->field("do") eq "edit" ||
 268             $form->field("do") eq "create")) {
 269                 # Rename button for the page, and also for attachments.
 270                 push @{$params{buttons}}, "Rename" if $form->field("do") eq "edit";
 271                 $form->tmpl_param("field-rename" => '<input name="_submit" type="submit" value="Rename Attachment" />');
 272
 273                 if (defined $renamesummary) {
 274                         $form->tmpl_param(message => $renamesummary);
 275                 }
 276         }
 277 }
 278
 279 sub sessioncgi ($$) {
 280         my $q=shift;
 281
 282         if ($q->param("do") eq 'rename') {
 283                 my $session=shift;
 284                 my ($form, $buttons)=rename_form($q, $session, Encode::decode_utf8($q->param("page")));
 285                 IkiWiki::decode_form_utf8($form);
 286
 287                 if ($form->submitted eq 'Cancel') {
 288                         postrename($session);
 289                 }
 290                 elsif ($form->submitted eq 'Rename' && $form->validate) {
 291                         IkiWiki::checksessionexpiry($q, $session, $q->param('sid'));
 292
 293                         # Queue of rename actions to perfom.
 294                         my @torename;
 295
 296                         # These untaints are safe because of the checks
 297                         # performed in check_canrename later.
 298                         my $src=$form->field("page");
 299                         my $srcfile=IkiWiki::possibly_foolish_untaint($pagesources{$src});
 300                         my $dest=IkiWiki::possibly_foolish_untaint(titlepage($form->field("new_name")));
 301                         my $destfile=$dest;
 302                         if (! $q->param("attachment")) {
 303                                 my $type=$q->param('type');
 304                                 if (defined $type && length $type && $IkiWiki::hooks{htmlize}{$type}) {
 305                                         $type=IkiWiki::possibly_foolish_untaint($type);
 306                                 }
 307                                 else {
 308                                         my ($ext)=$srcfile=~/\.([^.]+)$/;
 309                                         $type=$ext;
 310                                 }
 311
 312                                 $destfile=newpagefile($dest, $type);
 313                         }
 314                         push @torename, {
 315                                 src => $src,
 316                                 srcfile => $srcfile,
 317                                 dest => $dest,
 318                                 destfile => $destfile,
 319                                 required => 1,
 320                         };
 321
 322                         @torename=rename_hook(
 323                                 torename => \@torename,
 324                                 done => {},
 325                                 cgi => $q,
 326                                 session => $session,
 327                         );
 328
 329                         require IkiWiki::Render;
 330                         IkiWiki::disable_commit_hook() if $config{rcs};
 331                         my %origpagesources=%pagesources;
 332
 333                         # First file renaming.
 334                         foreach my $rename (@torename) {
 335                                 if ($rename->{required}) {
 336                                         do_rename($rename, $q, $session);
 337                                 }
 338                                 else {
 339                                         eval {do_rename($rename, $q, $session)};
 340                                         if ($@) {
 341                                                 $rename->{error}=$@;
 342                                                 next;
 343                                         }
 344                                 }
 345
 346                                 # Temporarily tweak pagesources to point to
 347                                 # the renamed file, in case fixlinks needs
 348                                 # to edit it.
 349                                 $pagesources{$rename->{src}}=$rename->{destfile};
 350                         }
 351                         IkiWiki::rcs_commit_staged(
 352                                 sprintf(gettext("rename %s to %s"), $srcfile, $destfile),
 353                                 $session->param("name"), $ENV{REMOTE_ADDR}) if $config{rcs};
 354
 355                         # Then link fixups.
 356                         foreach my $rename (@torename) {
 357                                 next if $rename->{src} eq $rename->{dest};
 358                                 next if $rename->{error};
 359                                 foreach my $p (fixlinks($rename, $session)) {
 360                                         # map old page names to new
 361                                         foreach my $r (@torename) {
 362                                                 next if $rename->{error};
 363                                                 if ($r->{src} eq $p) {
 364                                                         $p=$r->{dest};
 365                                                         last;
 366                                                 }
 367                                         }
 368                                         push @{$rename->{fixedlinks}}, $p;
 369                                 }
 370                         }
 371
 372                         # Then refresh.
 373                         %pagesources=%origpagesources;
 374                         if ($config{rcs}) {
 375                                 IkiWiki::enable_commit_hook();
 376                                 IkiWiki::rcs_update();
 377                         }
 378                         IkiWiki::refresh();
 379                         IkiWiki::saveindex();
 380
 381                         # Find pages with remaining, broken links.
 382                         foreach my $rename (@torename) {
 383                                 next if $rename->{src} eq $rename->{dest};
 384
 385                                 foreach my $page (keys %links) {
 386                                         my $broken=0;
 387                                         foreach my $link (@{$links{$page}}) {
 388                                                 my $bestlink=bestlink($page, $link);
 389                                                 if ($bestlink eq $rename->{src}) {
 390                                                         push @{$rename->{brokenlinks}}, $page;
 391                                                         last;
 392                                                 }
 393                                         }
 394                                 }
 395                         }
 396
 397                         # Generate a summary, that will be shown at the top
 398                         # of the edit template.
 399                         $renamesummary="";
 400                         foreach my $rename (@torename) {
 401                                 my $template=template("renamesummary.tmpl");
 402                                 $template->param(src => $rename->{srcfile});
 403                                 $template->param(dest => $rename->{destfile});
 404                                 $template->param(error => $rename->{error});
 405                                 if ($rename->{src} ne $rename->{dest}) {
 406                                         $template->param(brokenlinks_checked => 1);
 407                                         $template->param(brokenlinks => linklist($rename->{dest}, $rename->{brokenlinks}));
 408                                         $template->param(fixedlinks => linklist($rename->{dest}, $rename->{fixedlinks}));
 409                                 }
 410                                 $renamesummary.=$template->output;
 411                         }
 412
 413                         postrename($session, $src, $dest, $q->param("attachment"));
 414                 }
 415                 else {
 416                         IkiWiki::showform($form, $buttons, $session, $q);
 417                 }
 418
 419                 exit 0;
 420         }
 421 }
 422
 423 # Add subpages to the list of pages to be renamed, if needed.
 424 sub rename_subpages (@) {
 425         my %params = @_;
 426
 427         my %torename = %{$params{torename}};
 428         my $q = $params{cgi};
 429         my $src = $torename{src};
 430         my $srcfile = $torename{src};
 431         my $dest = $torename{dest};
 432         my $destfile = $torename{dest};
 433
 434         return () unless ($q->param("subpages") && $src ne $dest);
 435
 436         my @ret;
 437         foreach my $p (keys %pagesources) {
 438                 next unless $pagesources{$p}=~m/^\Q$src\E\//;
 439                 # If indexpages is enabled, the srcfile should not be confused
 440                 # with a subpage.
 441                 next if $pagesources{$p} eq $srcfile;
 442
 443                 my $d=$pagesources{$p};
 444                 $d=~s/^\Q$src\E\//$dest\//;
 445                 push @ret, {
 446                         src => $p,
 447                         srcfile => $pagesources{$p},
 448                         dest => pagename($d),
 449                         destfile => $d,
 450                         required => 0,
 451                 };
 452         }
 453         return @ret;
 454 }
 455
 456 sub linklist {
 457         # generates a list of links in a form suitable for FormBuilder
 458         my $dest=shift;
 459         my $list=shift;
 460         # converts a list of pages into a list of links
 461         # in a form suitable for FormBuilder.
 462
 463         [map {
 464                 {
 465                         page => htmllink($dest, $dest, $_,
 466                                         noimageinline => 1,
 467                                         linktext => pagetitle($_),
 468                                 )
 469                 }
 470         } @{$list}]
 471 }
 472
 473 sub renamepage_hook ($$$$) {
 474         my ($page, $src, $dest, $content)=@_;
 475
 476         IkiWiki::run_hooks(renamepage => sub {
 477                 $content=shift->(
 478                         page => $page,
 479                         oldpage => $src,
 480                         newpage => $dest,
 481                         content => $content,
 482                 );
 483         });
 484
 485         return $content;
 486 }
 487
 488 sub rename_hook {
 489         my %params = @_;
 490
 491         my @torename=@{$params{torename}};
 492         my %done=%{$params{done}};
 493         my $q=$params{cgi};
 494         my $session=$params{session};
 495
 496         return () unless @torename;
 497
 498         my @nextset;
 499         foreach my $torename (@torename) {
 500                 unless (exists $done{$torename->{src}} && $done{$torename->{src}}) {
 501                         IkiWiki::run_hooks(rename => sub {
 502                                 push @nextset, shift->(
 503                                         torename => $torename,
 504                                         cgi => $q,
 505                                         session => $session,
 506                                 );
 507                         });
 508                         $done{$torename->{src}}=1;
 509                 }
 510         }
 511
 512         push @torename, rename_hook(
 513                 torename => \@nextset,
 514                 done => \%done,
 515                 cgi => $q,
 516                 session => $session,
 517         );
 518
 519         # dedup
 520         my %seen;
 521         return grep { ! $seen{$_->{src}}++ } @torename;
 522 }
 523
 524 sub do_rename ($$$) {
 525         my $rename=shift;
 526         my $q=shift;
 527         my $session=shift;
 528
 529         # First, check if this rename is allowed.
 530         check_canrename($rename->{src},
 531                 $rename->{srcfile},
 532                 $rename->{dest},
 533                 $rename->{destfile},
 534                 $q, $session);
 535
 536         # Ensure that the dest directory exists and is ok.
 537         IkiWiki::prep_writefile($rename->{destfile}, $config{srcdir});
 538
 539         if ($config{rcs}) {
 540                 IkiWiki::rcs_rename($rename->{srcfile}, $rename->{destfile});
 541         }
 542         else {
 543                 if (! rename($config{srcdir}."/".$rename->{srcfile},
 544                              $config{srcdir}."/".$rename->{destfile})) {
 545                         error("rename: $!");
 546                 }
 547         }
 548
 549 }
 550
 551 sub fixlinks ($$$) {
 552         my $rename=shift;
 553         my $session=shift;
 554
 555         my @fixedlinks;
 556
 557         foreach my $page (keys %links) {
 558                 my $needfix=0;
 559                 foreach my $link (@{$links{$page}}) {
 560                         my $bestlink=bestlink($page, $link);
 561                         if ($bestlink eq $rename->{src}) {
 562                                 $needfix=1;
 563                                 last;
 564                         }
 565                 }
 566                 if ($needfix) {
 567                         my $file=$pagesources{$page};
 568                         my $oldcontent=readfile($config{srcdir}."/".$file);
 569                         my $content=renamepage_hook($page, $rename->{src}, $rename->{dest}, $oldcontent);
 570                         if ($oldcontent ne $content) {
 571                                 my $token=IkiWiki::rcs_prepedit($file);
 572                                 eval { writefile($file, $config{srcdir}, $content) };
 573                                 next if $@;
 574                                 my $conflict=IkiWiki::rcs_commit(
 575                                         $file,
 576                                         sprintf(gettext("update for rename of %s to %s"), $rename->{srcfile}, $rename->{destfile}),
 577                                         $token,
 578                                         $session->param("name"),
 579                                         $ENV{REMOTE_ADDR}
 580                                 );
 581                                 push @fixedlinks, $page if ! defined $conflict;
 582                         }
 583                 }
 584         }
 585
 586         return @fixedlinks;
 587 }
 588
 589 1