ikiwiki

   1 #!/usr/bin/perl -T
   2
   3 use warnings;
   4 use strict;
   5 use File::Find;
   6 use Memoize;
   7 use File::Spec;
   8 use HTML::Template;
   9
  10 BEGIN {
  11         $blosxom::version="is a proper perl module too much to ask?";
  12         do "/usr/bin/markdown";
  13 }
  14
  15 $ENV{PATH}="/usr/local/bin:/usr/bin:/bin";
  16 my ($srcdir, $templatedir, $destdir, %links, %oldlinks, %oldpagemtime,
  17     %renderedfiles, %pagesources);
  18 my $wiki_link_regexp=qr/\[\[([^\s]+)\]\]/;
  19 my $wiki_file_regexp=qr/(^[-A-Za-z0-9_.:\/+]+$)/;
  20 my $wiki_file_prune_regexp=qr!((^|/).svn/|\.\.|^\.|\/\.|\.html?$)!;
  21 my $verbose=0;
  22 my $wikiname="wiki";
  23 my $default_pagetype=".mdwn";
  24 my $cgi=0;
  25 my $url="";
  26 my $cgiurl="";
  27 my $historyurl="";
  28 my $svn=1;
  29 my $anonok=0;
  30 my $rebuild=0;
  31
  32 sub usage { #{{{
  33         die "usage: ikiwiki [options] source templates dest\n";
  34 } #}}}
  35
  36 sub error ($) { #{{{
  37         if ($cgi) {
  38                 print "Content-type: text/html\n\n";
  39                 print misctemplate("Error", "<p>Error: @_</p>");
  40                 exit 1;
  41         }
  42         else {
  43                 die @_;
  44         }
  45 } #}}}
  46
  47 sub debug ($) { #{{{
  48         if (! $cgi) {
  49                 print "@_\n" if $verbose;
  50         }
  51         else {
  52                 print STDERR "@_\n" if $verbose;
  53         }
  54 } #}}}
  55
  56 sub mtime ($) { #{{{
  57         my $page=shift;
  58
  59         return (stat($page))[9];
  60 } #}}}
  61
  62 sub possibly_foolish_untaint ($) { #{{{
  63         my $tainted=shift;
  64         my ($untainted)=$tainted=~/(.*)/;
  65         return $untainted;
  66 } #}}}
  67
  68 sub basename ($) { #{{{
  69         my $file=shift;
  70
  71         $file=~s!.*/!!;
  72         return $file;
  73 } #}}}
  74
  75 sub dirname ($) { #{{{
  76         my $file=shift;
  77
  78         $file=~s!/?[^/]+$!!;
  79         return $file;
  80 } #}}}
  81
  82 sub pagetype ($) { #{{{
  83         my $page=shift;
  84
  85         if ($page =~ /\.mdwn$/) {
  86                 return ".mdwn";
  87         }
  88         else {
  89                 return "unknown";
  90         }
  91 } #}}}
  92
  93 sub pagename ($) { #{{{
  94         my $file=shift;
  95
  96         my $type=pagetype($file);
  97         my $page=$file;
  98         $page=~s/\Q$type\E*$// unless $type eq 'unknown';
  99         return $page;
 100 } #}}}
 101
 102 sub htmlpage ($) { #{{{
 103         my $page=shift;
 104
 105         return $page.".html";
 106 } #}}}
 107
 108 sub readfile ($) { #{{{
 109         my $file=shift;
 110
 111         local $/=undef;
 112         open (IN, "$file") || error("failed to read $file: $!");
 113         my $ret=<IN>;
 114         close IN;
 115         return $ret;
 116 } #}}}
 117
 118 sub writefile ($$) { #{{{
 119         my $file=shift;
 120         my $content=shift;
 121
 122         my $dir=dirname($file);
 123         if (! -d $dir) {
 124                 my $d="";
 125                 foreach my $s (split(m!/+!, $dir)) {
 126                         $d.="$s/";
 127                         if (! -d $d) {
 128                                 mkdir($d) || error("failed to create directory $d: $!");
 129                         }
 130                 }
 131         }
 132
 133         open (OUT, ">$file") || error("failed to write $file: $!");
 134         print OUT $content;
 135         close OUT;
 136 } #}}}
 137
 138 sub findlinks ($) { #{{{
 139         my $content=shift;
 140
 141         my @links;
 142         while ($content =~ /$wiki_link_regexp/g) {
 143                 push @links, lc($1);
 144         }
 145         return @links;
 146 } #}}}
 147
 148 # Given a page and the text of a link on the page, determine which existing
 149 # page that link best points to. Prefers pages under a subdirectory with
 150 # the same name as the source page, failing that goes down the directory tree
 151 # to the base looking for matching pages.
 152 sub bestlink ($$) { #{{{
 153         my $page=shift;
 154         my $link=lc(shift);
 155
 156         my $cwd=$page;
 157         do {
 158                 my $l=$cwd;
 159                 $l.="/" if length $l;
 160                 $l.=$link;
 161
 162                 if (exists $links{$l}) {
 163                         #debug("for $page, \"$link\", use $l");
 164                         return $l;
 165                 }
 166         } while $cwd=~s!/?[^/]+$!!;
 167
 168         #print STDERR "warning: page $page, broken link: $link\n";
 169         return "";
 170 } #}}}
 171
 172 sub isinlinableimage ($) { #{{{
 173         my $file=shift;
 174
 175         $file=~/\.(png|gif|jpg|jpeg)$/;
 176 } #}}}
 177
 178 sub htmllink { #{{{
 179         my $page=shift;
 180         my $link=shift;
 181         my $noimageinline=shift; # don't turn links into inline html images
 182         my $createsubpage=shift; # force creation of a subpage if page DNE
 183
 184         my $bestlink=bestlink($page, $link);
 185
 186         return $link if length $bestlink && $page eq $bestlink;
 187
 188         # TODO BUG: %renderedfiles may not have it, if the linked to page
 189         # was also added and isn't yet rendered! Note that this bug is
 190         # masked by the bug mentioned below that makes all new files
 191         # be rendered twice.
 192         if (! grep { $_ eq $bestlink } values %renderedfiles) {
 193                 $bestlink=htmlpage($bestlink);
 194         }
 195         if (! grep { $_ eq $bestlink } values %renderedfiles) {
 196                 if (! $createsubpage) {
 197                         return "<a href=\"$cgiurl?do=create&page=$link&from=$page\">?</a>$link"
 198                 }
 199                 else {
 200                         return "<a href=\"$cgiurl?do=create&page=$page/$link\">?</a>$link"
 201                 }
 202         }
 203
 204         $bestlink=File::Spec->abs2rel($bestlink, dirname($page));
 205
 206         if (! $noimageinline && isinlinableimage($bestlink)) {
 207                 return "<img src=\"$bestlink\">";
 208         }
 209         return "<a href=\"$bestlink\">$link</a>";
 210 } #}}}
 211
 212 sub linkify ($$) { #{{{
 213         my $content=shift;
 214         my $file=shift;
 215
 216         $content =~ s/$wiki_link_regexp/htmllink(pagename($file), $1)/eg;
 217
 218         return $content;
 219 } #}}}
 220
 221 sub htmlize ($$) { #{{{
 222         my $type=shift;
 223         my $content=shift;
 224
 225         if ($type eq '.mdwn') {
 226                 return Markdown::Markdown($content);
 227         }
 228         else {
 229                 error("htmlization of $type not supported");
 230         }
 231 } #}}}
 232
 233 sub backlinks ($) { #{{{
 234         my $page=shift;
 235
 236         my @links;
 237         foreach my $p (keys %links) {
 238                 next if bestlink($page, $p) eq $page;
 239                 if (grep { length $_ && bestlink($p, $_) eq $page } @{$links{$p}}) {
 240                         my $href=File::Spec->abs2rel(htmlpage($p), dirname($page));
 241
 242                         # Trim common dir prefixes from both pages.
 243                         my $p_trimmed=$p;
 244                         my $page_trimmed=$page;
 245                         my $dir;
 246                         1 while (($dir)=$page_trimmed=~m!^([^/]+/)!) &&
 247                                 defined $dir &&
 248                                 $p_trimmed=~s/^\Q$dir\E// &&
 249                                 $page_trimmed=~s/^\Q$dir\E//;
 250
 251                         push @links, { url => $href, page => $p_trimmed };
 252                 }
 253         }
 254
 255         return sort { $a->{page} cmp $b->{page} } @links;
 256 } #}}}
 257
 258 sub parentlinks ($) { #{{{
 259         my $page=shift;
 260
 261         my @ret;
 262         my $pagelink="";
 263         my $path="";
 264         my $skip=1;
 265         foreach my $dir (reverse split("/", $page)) {
 266                 if (! $skip) {
 267                         unshift @ret, { url => "$path$dir.html", page => $dir };
 268                 }
 269                 else {
 270                         $skip=0;
 271                 }
 272                 $path.="../";
 273         }
 274         unshift @ret, { url => $path , page => $wikiname };
 275         return @ret;
 276 } #}}}
 277
 278 sub indexlink () { #{{{
 279         return "<a href=\"$url\">$wikiname</a>";
 280 } #}}}
 281
 282 sub finalize ($$) { #{{{
 283         my $content=shift;
 284         my $page=shift;
 285
 286         my $title=basename($page);
 287         $title=~s/_/ /g;
 288
 289         my $template=HTML::Template->new(blind_cache => 1,
 290                 filename => "$templatedir/page.tmpl");
 291
 292         if (length $cgiurl) {
 293                 $template->param(editurl => "$cgiurl?do=edit&page=$page");
 294                 if ($svn) {
 295                         $template->param(recentchangesurl => "$cgiurl?do=recentchanges");
 296                 }
 297         }
 298
 299         if (length $historyurl) {
 300                 my $u=$historyurl;
 301                 $u=~s/\[\[\]\]/$pagesources{$page}/g;
 302                 $template->param(historyurl => $u);
 303         }
 304
 305         $template->param(
 306                 title => $title,
 307                 wikiname => $wikiname,
 308                 parentlinks => [parentlinks($page)],
 309                 content => $content,
 310                 backlinks => [backlinks($page)],
 311                 discussionlink => htmllink($page, "Discussion", 1, 1),
 312         );
 313
 314         return $template->output;
 315 } #}}}
 316
 317 # Important security check. Make sure to call this before saving any files
 318 # to the source directory.
 319 sub check_overwrite ($$) { #{{{
 320         my $dest=shift;
 321         my $src=shift;
 322
 323         if (! exists $renderedfiles{$src} && -e $dest && ! $rebuild) {
 324                 error("$dest exists and was rendered from ".
 325                         join(" ",(grep { $renderedfiles{$_} eq $dest } keys
 326                                 %renderedfiles)).
 327                         ", not from $src before not overwriting");
 328         }
 329 } #}}}
 330
 331 sub render ($) { #{{{
 332         my $file=shift;
 333
 334         my $type=pagetype($file);
 335         my $content=readfile("$srcdir/$file");
 336         if ($type ne 'unknown') {
 337                 my $page=pagename($file);
 338
 339                 $links{$page}=[findlinks($content)];
 340
 341                 $content=linkify($content, $file);
 342                 $content=htmlize($type, $content);
 343                 $content=finalize($content, $page);
 344
 345                 check_overwrite("$destdir/".htmlpage($page), $page);
 346                 writefile("$destdir/".htmlpage($page), $content);
 347                 $oldpagemtime{$page}=time;
 348                 $renderedfiles{$page}=htmlpage($page);
 349         }
 350         else {
 351                 $links{$file}=[];
 352                 check_overwrite("$destdir/$file", $file);
 353                 writefile("$destdir/$file", $content);
 354                 $oldpagemtime{$file}=time;
 355                 $renderedfiles{$file}=$file;
 356         }
 357 } #}}}
 358
 359 sub loadindex () { #{{{
 360         open (IN, "$srcdir/.ikiwiki/index") || return;
 361         while (<IN>) {
 362                 $_=possibly_foolish_untaint($_);
 363                 chomp;
 364                 my ($mtime, $file, $rendered, @links)=split(' ', $_);
 365                 my $page=pagename($file);
 366                 $pagesources{$page}=$file;
 367                 $oldpagemtime{$page}=$mtime;
 368                 $oldlinks{$page}=[@links];
 369                 $links{$page}=[@links];
 370                 $renderedfiles{$page}=$rendered;
 371         }
 372         close IN;
 373 } #}}}
 374
 375 sub saveindex () { #{{{
 376         if (! -d "$srcdir/.ikiwiki") {
 377                 mkdir("$srcdir/.ikiwiki");
 378         }
 379         open (OUT, ">$srcdir/.ikiwiki/index") || error("cannot write to index: $!");
 380         foreach my $page (keys %oldpagemtime) {
 381                 print OUT "$oldpagemtime{$page} $pagesources{$page} $renderedfiles{$page} ".
 382                         join(" ", @{$links{$page}})."\n"
 383                                 if $oldpagemtime{$page};
 384         }
 385         close OUT;
 386 } #}}}
 387
 388 sub rcs_update () { #{{{
 389         if (-d "$srcdir/.svn") {
 390                 if (system("svn", "update", "--quiet", $srcdir) != 0) {
 391                         warn("svn update failed\n");
 392                 }
 393         }
 394 } #}}}
 395
 396 sub rcs_commit ($) { #{{{
 397         my $message=shift;
 398
 399         if (-d "$srcdir/.svn") {
 400                 if (system("svn", "commit", "--quiet", "-m",
 401                            possibly_foolish_untaint($message), $srcdir) != 0) {
 402                         warn("svn commit failed\n");
 403                 }
 404         }
 405 } #}}}
 406
 407 sub rcs_add ($) { #{{{
 408         my $file=shift;
 409
 410         if (-d "$srcdir/.svn") {
 411                 my $parent=dirname($file);
 412                 while (! -d "$srcdir/$parent/.svn") {
 413                         $file=$parent;
 414                         $parent=dirname($file);
 415                 }
 416
 417                 if (system("svn", "add", "--quiet", "$srcdir/$file") != 0) {
 418                         warn("svn add failed\n");
 419                 }
 420         }
 421 } #}}}
 422
 423 sub rcs_recentchanges ($) { #{{{
 424         my $num=shift;
 425         my @ret;
 426
 427         eval q{use Date::Parse};
 428         eval q{use Time::Duration};
 429
 430         if (-d "$srcdir/.svn") {
 431                 my $info=`LANG=C svn info $srcdir`;
 432                 my ($svn_url)=$info=~/^URL: (.*)$/m;
 433
 434                 # FIXME: currently assumes that the wiki is somewhere
 435                 # under trunk in svn, doesn't support other layouts.
 436                 my ($svn_base)=$svn_url=~m!(/trunk(?:/.*)?)$!;
 437
 438                 my $div=qr/^--------------------+$/;
 439                 my $infoline=qr/^r(\d+)\s+\|\s+([^\s]+)\s+\|\s+(\d+-\d+-\d+\s+\d+:\d+:\d+\s+[-+]?\d+).*/;
 440                 my $state='start';
 441                 my ($rev, $user, $when, @pages, @message);
 442                 foreach (`LANG=C svn log -v '$svn_url'`) {
 443                         chomp;
 444                         if ($state eq 'start' && /$div/) {
 445                                 $state='header';
 446                         }
 447                         elsif ($state eq 'header' && /$infoline/) {
 448                                 $rev=$1;
 449                                 $user=$2;
 450                                 $when=concise(ago(time - str2time($3)));
 451                         }
 452                         elsif ($state eq 'header' && /^\s+[A-Z]\s+\Q$svn_base\E\/(.+)$/) {
 453                                 push @pages, { link => htmllink("", pagename($1), 1) }
 454                                         if length $1;
 455                         }
 456                         elsif ($state eq 'header' && /^$/) {
 457                                 $state='body';
 458                         }
 459                         elsif ($state eq 'body' && /$div/) {
 460                                 my $committype="web";
 461                                 if (defined $message[0] &&
 462                                     $message[0]->{line}=~/^web commit by (\w+):?(.*)/) {
 463                                         $user="$1";
 464                                         $message[0]->{line}=$2;
 465                                 }
 466                                 else {
 467                                         $committype="svn";
 468                                 }
 469
 470                                 push @ret, { rev => $rev,
 471                                         user => htmllink("", $user, 1),
 472                                         committype => $committype,
 473                                         when => $when, message => [@message],
 474                                         pages => [@pages] } if @pages;
 475                                 return @ret if @ret >= $num;
 476
 477                                 $state='header';
 478                                 $rev=$user=$when=undef;
 479                                 @pages=@message=();
 480                         }
 481                         elsif ($state eq 'body') {
 482                                 push @message, {line => $_},
 483                         }
 484                 }
 485         }
 486
 487         return @ret;
 488 } #}}}
 489
 490 sub prune ($) { #{{{
 491         my $file=shift;
 492
 493         unlink($file);
 494         my $dir=dirname($file);
 495         while (rmdir($dir)) {
 496                 $dir=dirname($dir);
 497         }
 498 } #}}}
 499
 500 sub refresh () { #{{{
 501         # Find existing pages.
 502         my %exists;
 503         my @files;
 504         find({
 505                 no_chdir => 1,
 506                 wanted => sub {
 507                         if (/$wiki_file_prune_regexp/) {
 508                                 $File::Find::prune=1;
 509                         }
 510                         elsif (! -d $_) {
 511                                 my ($f)=/$wiki_file_regexp/; # untaint
 512                                 if (! defined $f) {
 513                                         warn("skipping bad filename $_\n");
 514                                 }
 515                                 else {
 516                                         $f=~s/^\Q$srcdir\E\/?//;
 517                                         push @files, $f;
 518                                         $exists{pagename($f)}=1;
 519                                 }
 520                         }
 521                 },
 522         }, $srcdir);
 523
 524         my %rendered;
 525
 526         # check for added or removed pages
 527         my @add;
 528         foreach my $file (@files) {
 529                 my $page=pagename($file);
 530                 if (! $oldpagemtime{$page}) {
 531                         debug("new page $page");
 532                         push @add, $file;
 533                         $links{$page}=[];
 534                         $pagesources{$page}=$file;
 535                 }
 536         }
 537         my @del;
 538         foreach my $page (keys %oldpagemtime) {
 539                 if (! $exists{$page}) {
 540                         debug("removing old page $page");
 541                         push @del, $renderedfiles{$page};
 542                         prune($destdir."/".$renderedfiles{$page});
 543                         delete $renderedfiles{$page};
 544                         $oldpagemtime{$page}=0;
 545                         delete $pagesources{$page};
 546                 }
 547         }
 548
 549         # render any updated files
 550         foreach my $file (@files) {
 551                 my $page=pagename($file);
 552
 553                 if (! exists $oldpagemtime{$page} ||
 554                     mtime("$srcdir/$file") > $oldpagemtime{$page}) {
 555                         debug("rendering changed file $file");
 556                         render($file);
 557                         $rendered{$file}=1;
 558                 }
 559         }
 560
 561         # if any files were added or removed, check to see if each page
 562         # needs an update due to linking to them
 563         # TODO: inefficient; pages may get rendered above and again here;
 564         # problem is the bestlink may have changed and we won't know until
 565         # now
 566         if (@add || @del) {
 567 FILE:           foreach my $file (@files) {
 568                         my $page=pagename($file);
 569                         foreach my $f (@add, @del) {
 570                                 my $p=pagename($f);
 571                                 foreach my $link (@{$links{$page}}) {
 572                                         if (bestlink($page, $link) eq $p) {
 573                                                 debug("rendering $file, which links to $p");
 574                                                 render($file);
 575                                                 $rendered{$file}=1;
 576                                                 next FILE;
 577                                         }
 578                                 }
 579                         }
 580                 }
 581         }
 582
 583         # handle backlinks; if a page has added/removed links, update the
 584         # pages it links to
 585         # TODO: inefficient; pages may get rendered above and again here;
 586         # problem is the backlinks could be wrong in the first pass render
 587         # above
 588         if (%rendered) {
 589                 my %linkchanged;
 590                 foreach my $file (keys %rendered, @del) {
 591                         my $page=pagename($file);
 592                         if (exists $links{$page}) {
 593                                 foreach my $link (@{$links{$page}}) {
 594                                         $link=bestlink($page, $link);
 595                                         if (length $link &&
 596                                             ! exists $oldlinks{$page} ||
 597                                             ! grep { $_ eq $link } @{$oldlinks{$page}}) {
 598                                                 $linkchanged{$link}=1;
 599                                         }
 600                                 }
 601                         }
 602                         if (exists $oldlinks{$page}) {
 603                                 foreach my $link (@{$oldlinks{$page}}) {
 604                                         $link=bestlink($page, $link);
 605                                         if (length $link &&
 606                                             ! exists $links{$page} ||
 607                                             ! grep { $_ eq $link } @{$links{$page}}) {
 608                                                 $linkchanged{$link}=1;
 609                                         }
 610                                 }
 611                         }
 612                 }
 613                 foreach my $link (keys %linkchanged) {
 614                         my $linkfile=$pagesources{$link};
 615                         if (defined $linkfile) {
 616                                 debug("rendering $linkfile, to update its backlinks");
 617                                 render($linkfile);
 618                         }
 619                 }
 620         }
 621 } #}}}
 622
 623 # Generates a C wrapper program for running ikiwiki in a specific way.
 624 # The wrapper may be safely made suid.
 625 sub gen_wrapper ($$) { #{{{
 626         my ($svn, $rebuild)=@_;
 627
 628         eval q{use Cwd 'abs_path'};
 629         $srcdir=abs_path($srcdir);
 630         $destdir=abs_path($destdir);
 631         my $this=abs_path($0);
 632         if (! -x $this) {
 633                 error("$this doesn't seem to be executable");
 634         }
 635
 636         my @params=($srcdir, $templatedir, $destdir, "--wikiname=$wikiname");
 637         push @params, "--verbose" if $verbose;
 638         push @params, "--rebuild" if $rebuild;
 639         push @params, "--nosvn" if !$svn;
 640         push @params, "--cgi" if $cgi;
 641         push @params, "--url=$url" if $url;
 642         push @params, "--cgiurl=$cgiurl" if $cgiurl;
 643         push @params, "--historyurl=$historyurl" if $historyurl;
 644         push @params, "--anonok" if $anonok;
 645         my $params=join(" ", map { "\'$_\'" } @params);
 646         my $call='';
 647         foreach my $p ($this, $this, @params) {
 648                 $call.=qq{"$p", };
 649         }
 650         $call.="NULL";
 651
 652         my @envsave;
 653         push @envsave, qw{REMOTE_ADDR QUERY_STRING REQUEST_METHOD REQUEST_URI
 654                        CONTENT_TYPE CONTENT_LENGTH GATEWAY_INTERFACE
 655                        HTTP_COOKIE} if $cgi;
 656         my $envsave="";
 657         foreach my $var (@envsave) {
 658                 $envsave.=<<"EOF"
 659         if ((s=getenv("$var")))
 660                 asprintf(&newenviron[i++], "%s=%s", "$var", s);
 661 EOF
 662         }
 663
 664         open(OUT, ">ikiwiki-wrap.c") || error("failed to write ikiwiki-wrap.c: $!");;
 665         print OUT <<"EOF";
 666 /* A wrapper for ikiwiki, can be safely made suid. */
 667 #define _GNU_SOURCE
 668 #include <stdio.h>
 669 #include <unistd.h>
 670 #include <stdlib.h>
 671 #include <string.h>
 672
 673 extern char **environ;
 674
 675 int main (int argc, char **argv) {
 676         /* Sanitize environment. */
 677         char *s;
 678         char *newenviron[$#envsave+3];
 679         int i=0;
 680 $envsave
 681         newenviron[i++]="HOME=$ENV{HOME}";
 682         newenviron[i]=NULL;
 683         environ=newenviron;
 684
 685         if (argc == 2 && strcmp(argv[1], "--params") == 0) {
 686                 printf("$params\\n");
 687                 exit(0);
 688         }
 689
 690         execl($call);
 691         perror("failed to run $this");
 692         exit(1);
 693 }
 694 EOF
 695         close OUT;
 696         if (system("gcc", "ikiwiki-wrap.c", "-o", "ikiwiki-wrap") != 0) {
 697                 error("failed to compile ikiwiki-wrap.c");
 698         }
 699         unlink("ikiwiki-wrap.c");
 700         print "successfully generated ikiwiki-wrap\n";
 701         exit 0;
 702 } #}}}
 703
 704 sub misctemplate ($$) { #{{{
 705         my $title=shift;
 706         my $pagebody=shift;
 707
 708         my $template=HTML::Template->new(
 709                 filename => "$templatedir/misc.tmpl"
 710         );
 711         $template->param(
 712                 title => $title,
 713                 indexlink => indexlink(),
 714                 wikiname => $wikiname,
 715                 pagebody => $pagebody,
 716         );
 717         return $template->output;
 718 }#}}}
 719
 720 sub cgi_recentchanges ($) { #{{{
 721         my $q=shift;
 722
 723         my $template=HTML::Template->new(
 724                 filename => "$templatedir/recentchanges.tmpl"
 725         );
 726         $template->param(
 727                 title => "RecentChanges",
 728                 indexlink => indexlink(),
 729                 wikiname => $wikiname,
 730                 changelog => [rcs_recentchanges(100)],
 731         );
 732         print $q->header, $template->output;
 733 } #}}}
 734
 735 sub userinfo_get ($$) { #{{{
 736         my $user=shift;
 737         my $field=shift;
 738
 739         eval q{use Storable};
 740         my $userdata=eval{ Storable::lock_retrieve("$srcdir/.ikiwiki/userdb") };
 741         if (! defined $userdata || ! ref $userdata ||
 742             ! exists $userdata->{$user} || ! ref $userdata->{$user}) {
 743                 return "";
 744         }
 745         return $userdata->{$user}->{$field};
 746 } #}}}
 747
 748 sub userinfo_set ($$) { #{{{
 749         my $user=shift;
 750         my $info=shift;
 751
 752         eval q{use Storable};
 753         my $userdata=eval{ Storable::lock_retrieve("$srcdir/.ikiwiki/userdb") };
 754         if (! defined $userdata || ! ref $userdata) {
 755                 $userdata={};
 756         }
 757         $userdata->{$user}=$info;
 758         my $oldmask=umask(077);
 759         my $ret=Storable::lock_store($userdata, "$srcdir/.ikiwiki/userdb");
 760         umask($oldmask);
 761         return $ret;
 762 } #}}}
 763
 764 sub cgi_signin ($$) { #{{{
 765         my $q=shift;
 766         my $session=shift;
 767
 768         eval q{use CGI::FormBuilder};
 769         my $form = CGI::FormBuilder->new(
 770                 title => "$wikiname signin",
 771                 fields => [qw(do page from name password confirm_password email)],
 772                 header => 1,
 773                 method => 'POST',
 774                 validate => {
 775                         confirm_password => {
 776                                 perl => q{eq $form->field("password")},
 777                         },
 778                         email => 'EMAIL',
 779                 },
 780                 required => 'NONE',
 781                 javascript => 0,
 782                 params => $q,
 783                 action => $q->request_uri,
 784                 header => 0,
 785                 template => (-e "$templatedir/signin.tmpl" ? "$templatedir/signin.tmpl" : "")
 786         );
 787
 788         $form->field(name => "name", required => 0);
 789         $form->field(name => "do", type => "hidden");
 790         $form->field(name => "page", type => "hidden");
 791         $form->field(name => "from", type => "hidden");
 792         $form->field(name => "password", type => "password", required => 0);
 793         $form->field(name => "confirm_password", type => "password", required => 0);
 794         $form->field(name => "email", required => 0);
 795         if ($q->param("do") ne "signin") {
 796                 $form->text("You need to log in before you can edit pages.");
 797         }
 798
 799         if ($form->submitted) {
 800                 # Set required fields based on how form was submitted.
 801                 my %required=(
 802                         "Login" => [qw(name password)],
 803                         "Register" => [qw(name password confirm_password email)],
 804                         "Mail Password" => [qw(name)],
 805                 );
 806                 foreach my $opt (@{$required{$form->submitted}}) {
 807                         $form->field(name => $opt, required => 1);
 808                 }
 809
 810                 # Validate password differently depending on how
 811                 # form was submitted.
 812                 if ($form->submitted eq 'Login') {
 813                         $form->field(
 814                                 name => "password",
 815                                 validate => sub {
 816                                         length $form->field("name") &&
 817                                         shift eq userinfo_get($form->field("name"), 'password');
 818                                 },
 819                         );
 820                         $form->field(name => "name", validate => '/^\w+$/');
 821                 }
 822                 else {
 823                         $form->field(name => "password", validate => 'VALUE');
 824                 }
 825                 # And make sure the entered name exists when logging
 826                 # in or sending email, and does not when registering.
 827                 if ($form->submitted eq 'Register') {
 828                         $form->field(
 829                                 name => "name",
 830                                 validate => sub {
 831                                         my $name=shift;
 832                                         length $name &&
 833                                         ! userinfo_get($name, "regdate");
 834                                 },
 835                         );
 836                 }
 837                 else {
 838                         $form->field(
 839                                 name => "name",
 840                                 validate => sub {
 841                                         my $name=shift;
 842                                         length $name &&
 843                                         userinfo_get($name, "regdate");
 844                                 },
 845                         );
 846                 }
 847         }
 848         else {
 849                 # First time settings.
 850                 $form->field(name => "name", comment => "use FirstnameLastName");
 851                 $form->field(name => "confirm_password", comment => "(only needed");
 852                 $form->field(name => "email",            comment => "for registration)");
 853                 if ($session->param("name")) {
 854                         $form->field(name => "name", value => $session->param("name"));
 855                 }
 856         }
 857
 858         if ($form->submitted && $form->validate) {
 859                 if ($form->submitted eq 'Login') {
 860                         $session->param("name", $form->field("name"));
 861                         if (defined $form->field("do") &&
 862                             $form->field("do") ne 'signin') {
 863                                 print $q->redirect(
 864                                         "$cgiurl?do=".$form->field("do").
 865                                         "&page=".$form->field("page").
 866                                         "&from=".$form->field("from"));;
 867                         }
 868                         else {
 869                                 print $q->redirect($url);
 870                         }
 871                 }
 872                 elsif ($form->submitted eq 'Register') {
 873                         my $user_name=$form->field('name');
 874                         if (userinfo_set($user_name, {
 875                                            'email' => $form->field('email'),
 876                                            'password' => $form->field('password'),
 877                                            'regdate' => time
 878                                          })) {
 879                                 $form->field(name => "confirm_password", type => "hidden");
 880                                 $form->field(name => "email", type => "hidden");
 881                                 $form->text("Registration successful. Now you can Login.");
 882                                 print $session->header();
 883                                 print misctemplate($form->title, $form->render(submit => ["Login"]));
 884                         }
 885                         else {
 886                                 error("Error saving registration.");
 887                         }
 888                 }
 889                 elsif ($form->submitted eq 'Mail Password') {
 890                         my $user_name=$form->field("name");
 891                         my $template=HTML::Template->new(
 892                                 filename => "$templatedir/passwordmail.tmpl"
 893                         );
 894                         $template->param(
 895                                 user_name => $user_name,
 896                                 user_password => userinfo_get($user_name, "password"),
 897                                 wikiurl => $url,
 898                                 wikiname => $wikiname,
 899                                 REMOTE_ADDR => $ENV{REMOTE_ADDR},
 900                         );
 901
 902                         eval q{use Mail::Sendmail};
 903                         my ($fromhost) = $cgiurl =~ m!/([^/]+)!;
 904                         print STDERR "$< $> >>> $cgiurl ".(getpwuid($>))[0]."@".$fromhost."\n";
 905                         sendmail(
 906                                 To => userinfo_get($user_name, "email"),
 907                                 From => "$wikiname admin <".(getpwuid($>))[0]."@".$fromhost.">",
 908                                 Subject => "$wikiname information",
 909                                 Message => $template->output,
 910                         ) or error("Failed to send mail");
 911
 912                         $form->text("Your password has been emailed to you.");
 913                         $form->field(name => "name", required => 0);
 914                         print $session->header();
 915                         print misctemplate($form->title, $form->render(submit => ["Login", "Register", "Mail Password"]));
 916                 }
 917         }
 918         else {
 919                 print $session->header();
 920                 print misctemplate($form->title, $form->render(submit => ["Login", "Register", "Mail Password"]));
 921         }
 922 } #}}}
 923
 924 sub cgi_editpage ($$) { #{{{
 925         my $q=shift;
 926         my $session=shift;
 927
 928         eval q{use CGI::FormBuilder};
 929         my $form = CGI::FormBuilder->new(
 930                 fields => [qw(do from page content comments)],
 931                 header => 1,
 932                 method => 'POST',
 933                 validate => {
 934                         content => '/.+/',
 935                 },
 936                 required => [qw{content}],
 937                 javascript => 0,
 938                 params => $q,
 939                 action => $q->request_uri,
 940                 table => 0,
 941                 template => "$templatedir/editpage.tmpl"
 942         );
 943
 944         my ($page)=$form->param('page')=~/$wiki_file_regexp/;
 945         if (! defined $page || ! length $page || $page ne $q->param('page') ||
 946             $page=~/$wiki_file_prune_regexp/ || $page=~/^\//) {
 947                 error("bad page name");
 948         }
 949         $page=lc($page);
 950
 951         $form->field(name => "do", type => 'hidden');
 952         $form->field(name => "from", type => 'hidden');
 953         $form->field(name => "page", value => "$page", force => 1);
 954         $form->field(name => "comments", type => "text", size => 80);
 955         $form->field(name => "content", type => "textarea", rows => 20,
 956                 cols => 80);
 957
 958         if ($form->submitted eq "Cancel") {
 959                 print $q->redirect("$url/".htmlpage($page));
 960                 return;
 961         }
 962         if (! $form->submitted || ! $form->validate) {
 963                 if ($form->field("do") eq "create") {
 964                         if (exists $pagesources{lc($page)}) {
 965                                 # hmm, someone else made the page in the
 966                                 # meantime?
 967                                 print $q->redirect("$url/".htmlpage($page));
 968                                 return;
 969                         }
 970
 971                         my @page_locs;
 972                         my ($from)=$form->param('from')=~/$wiki_file_regexp/;
 973                         if (! defined $from || ! length $from ||
 974                             $from ne $form->param('from') ||
 975                             $from=~/$wiki_file_prune_regexp/ || $from=~/^\//) {
 976                                 @page_locs=$page;
 977                         }
 978                         else {
 979                                 my $dir=$from."/";
 980                                 $dir=~s![^/]+/$!!;
 981                                 push @page_locs, $dir.$page;
 982                                 push @page_locs, "$from/$page";
 983                                 while (length $dir) {
 984                                         $dir=~s![^/]+/$!!;
 985                                         push @page_locs, $dir.$page;
 986                                 }
 987                         }
 988
 989                         $form->tmpl_param("page_select", 1);
 990                         $form->field(name => "page", type => 'select',
 991                                 options => \@page_locs);
 992                         $form->title("creating $page");
 993                 }
 994                 elsif ($form->field("do") eq "edit") {
 995                         my $content="";
 996                         if (exists $pagesources{lc($page)}) {
 997                                 $content=readfile("$srcdir/$pagesources{lc($page)}");
 998                                 $content=~s/\n/\r\n/g;
 999                         }
1000                         $form->tmpl_param("page_select", 0);
1001                         $form->field(name => "content", value => $content,
1002                                 force => 1);
1003                         $form->field(name => "page", type => 'hidden');
1004                         $form->title("editing $page");
1005                 }
1006
1007                 $form->tmpl_param("can_commit", $svn);
1008                 $form->tmpl_param("indexlink", indexlink());
1009                 print $form->render(submit => ["Save Page", "Cancel"]);
1010         }
1011         else {
1012                 # save page
1013                 my $file=$page.$default_pagetype;
1014                 my $newfile=1;
1015                 if (exists $pagesources{lc($page)}) {
1016                         $file=$pagesources{lc($page)};
1017                         $newfile=0;
1018                 }
1019
1020                 my $content=$form->field('content');
1021                 $content=~s/\r\n/\n/g;
1022                 $content=~s/\r/\n/g;
1023                 writefile("$srcdir/$file", $content);
1024
1025                 my $message="web commit ";
1026                 if ($session->param("name")) {
1027                         $message.="by ".$session->param("name");
1028                 }
1029                 else {
1030                         $message.="from $ENV{REMOTE_ADDR}";
1031                 }
1032                 if (defined $form->field('comments') &&
1033                     length $form->field('comments')) {
1034                         $message.=": ".$form->field('comments');
1035                 }
1036
1037                 if ($svn) {
1038                         if ($newfile) {
1039                                 rcs_add($file);
1040                         }
1041                         # presumably the commit will trigger an update
1042                         # of the wiki
1043                         rcs_commit($message);
1044                 }
1045                 else {
1046                         refresh();
1047                 }
1048
1049                 # The trailing question mark tries to avoid broken
1050                 # caches and get the most recent version of the page.
1051                 print $q->redirect("$url/".htmlpage($page)."?updated");
1052         }
1053 } #}}}
1054
1055 sub cgi () { #{{{
1056         eval q{use CGI};
1057         eval q{use CGI::Session};
1058
1059         my $q=CGI->new;
1060
1061         my $do=$q->param('do');
1062         if (! defined $do || ! length $do) {
1063                 error("\"do\" parameter missing");
1064         }
1065
1066         # This does not need a session.
1067         if ($do eq 'recentchanges') {
1068                 cgi_recentchanges($q);
1069                 return;
1070         }
1071
1072         CGI::Session->name("ikiwiki_session");
1073
1074         my $oldmask=umask(077);
1075         my $session = CGI::Session->new("driver:db_file", $q,
1076                 { FileName => "$srcdir/.ikiwiki/sessions.db" });
1077         umask($oldmask);
1078
1079         # Everything below this point needs the user to be signed in.
1080         if ((! $anonok && ! defined $session->param("name") ||
1081                 ! userinfo_get($session->param("name"), "regdate")) || $do eq 'signin') {
1082                 cgi_signin($q, $session);
1083
1084                 # Force session flush with safe umask.
1085                 my $oldmask=umask(077);
1086                 $session->flush;
1087                 umask($oldmask);
1088
1089                 return;
1090         }
1091
1092         if ($do eq 'create' || $do eq 'edit') {
1093                 cgi_editpage($q, $session);
1094         }
1095         else {
1096                 error("unknown do parameter");
1097         }
1098 } #}}}
1099
1100 # main {{{
1101 my $wrapper=0;
1102 if (grep /^-/, @ARGV) {
1103         eval {use Getopt::Long};
1104         GetOptions(
1105                 "wikiname=s" => \$wikiname,
1106                 "verbose|v" => \$verbose,
1107                 "rebuild!" => \$rebuild,
1108                 "wrapper!" => \$wrapper,
1109                 "svn!" => \$svn,
1110                 "anonok!" => \$anonok,
1111                 "cgi!" => \$cgi,
1112                 "url=s" => \$url,
1113                 "cgiurl=s" => \$cgiurl,
1114                 "historyurl=s" => \$historyurl,
1115         ) || usage();
1116 }
1117 usage() unless @ARGV == 3;
1118 ($srcdir) = possibly_foolish_untaint(shift);
1119 ($templatedir) = possibly_foolish_untaint(shift);
1120 ($destdir) = possibly_foolish_untaint(shift);
1121
1122 if ($cgi && ! length $url) {
1123         error("Must specify url to wiki with --url when using --cgi");
1124 }
1125
1126 gen_wrapper($svn, $rebuild) if $wrapper;
1127 memoize('pagename');
1128 memoize('bestlink');
1129 loadindex() unless $rebuild;
1130 if ($cgi) {
1131         cgi();
1132 }
1133 else {
1134         rcs_update() if $svn;
1135         refresh();
1136         saveindex();
1137 }
1138 #}}}