- #!/usr/bin/perl
- package IkiWiki;
- use warnings;
- use strict;
- use IkiWiki;
- use Encode;
- my %backlinks;
- our %brokenlinks;
- my $links_calculated=0;
- sub calculate_links () {
- return if $links_calculated;
- %backlinks=%brokenlinks=();
- foreach my $page (keys %links) {
- foreach my $link (@{$links{$page}}) {
- my $bestlink=bestlink($page, $link);
- if (length $bestlink) {
- $backlinks{$bestlink}{$page}=1
- if $bestlink ne $page;
- }
- else {
- push @{$brokenlinks{$link}}, $page;
- }
- }
- }
- $links_calculated=1;
- }
- sub backlink_pages ($) {
- my $page=shift;
- calculate_links();
- return keys %{$backlinks{$page}};
- }
- sub backlinks ($) {
- my $page=shift;
- my @links;
- foreach my $p (backlink_pages($page)) {
- my $href=urlto($p, $page);
-
- # Trim common dir prefixes from both pages.
- my $p_trimmed=$p;
- my $page_trimmed=$page;
- my $dir;
- 1 while (($dir)=$page_trimmed=~m!^([^/]+/)!) &&
- defined $dir &&
- $p_trimmed=~s/^\Q$dir\E// &&
- $page_trimmed=~s/^\Q$dir\E//;
-
- push @links, { url => $href, page => pagetitle($p_trimmed) };
- }
- return @links;
- }
- sub genpage ($$) {
- my $page=shift;
- my $content=shift;
- my $templatefile;
- run_hooks(templatefile => sub {
- return if defined $templatefile;
- my $file=shift->(page => $page);
- if (defined $file && defined template_file($file)) {
- $templatefile=$file;
- }
- });
- my $template=template(defined $templatefile ? $templatefile : 'page.tmpl', blind_cache => 1);
- my $actions=0;
- if (length $config{cgiurl}) {
- $template->param(editurl => cgiurl(do => "edit", page => $page))
- if IkiWiki->can("cgi_editpage");
- $template->param(prefsurl => cgiurl(do => "prefs"))
- if exists $hooks{auth};
- $actions++;
- }
-
- if (defined $config{historyurl} && length $config{historyurl}) {
- my $u=$config{historyurl};
- $u=~s/\[\[file\]\]/$pagesources{$page}/g;
- $template->param(historyurl => $u);
- $actions++;
- }
- if ($config{discussion}) {
- if ($page !~ /.*\/\Q$config{discussionpage}\E$/ &&
- (length $config{cgiurl} ||
- exists $links{$page."/".$config{discussionpage}})) {
- $template->param(discussionlink => htmllink($page, $page, $config{discussionpage}, noimageinline => 1, forcesubpage => 1));
- $actions++;
- }
- }
- if ($actions) {
- $template->param(have_actions => 1);
- }
- my @backlinks=sort { $a->{page} cmp $b->{page} } backlinks($page);
- my ($backlinks, $more_backlinks);
- if (@backlinks <= $config{numbacklinks} || ! $config{numbacklinks}) {
- $backlinks=\@backlinks;
- $more_backlinks=[];
- }
- else {
- $backlinks=[@backlinks[0..$config{numbacklinks}-1]];
- $more_backlinks=[@backlinks[$config{numbacklinks}..$#backlinks]];
- }
- $template->param(
- title => $page eq 'index'
- ? $config{wikiname}
- : pagetitle(basename($page)),
- wikiname => $config{wikiname},
- content => $content,
- backlinks => $backlinks,
- more_backlinks => $more_backlinks,
- mtime => displaytime($pagemtime{$page}),
- ctime => displaytime($pagectime{$page}),
- baseurl => baseurl($page),
- );
- run_hooks(pagetemplate => sub {
- shift->(page => $page, destpage => $page, template => $template);
- });
-
- $content=$template->output;
-
- run_hooks(postscan => sub {
- shift->(page => $page, content => $content);
- });
- run_hooks(format => sub {
- $content=shift->(
- page => $page,
- content => $content,
- );
- });
- return $content;
- }
- sub scan ($) {
- my $file=shift;
- my $type=pagetype($file);
- if (defined $type) {
- my $srcfile=srcfile($file);
- my $content=readfile($srcfile);
- my $page=pagename($file);
- will_render($page, htmlpage($page), 1);
- if ($config{discussion}) {
- # Discussion links are a special case since they're
- # not in the text of the page, but on its template.
- $links{$page}=[ $page."/".lc($config{discussionpage}) ];
- }
- else {
- $links{$page}=[];
- }
- run_hooks(scan => sub {
- shift->(
- page => $page,
- content => $content,
- );
- });
- # Preprocess in scan-only mode.
- preprocess($page, $page, $content, 1);
- }
- else {
- will_render($file, $file, 1);
- }
- }
- sub fast_file_copy (@) {
- my $srcfile=shift;
- my $destfile=shift;
- my $srcfd=shift;
- my $destfd=shift;
- my $cleanup=shift;
- my $blksize = 16384;
- my ($len, $buf, $written);
- while ($len = sysread $srcfd, $buf, $blksize) {
- if (! defined $len) {
- next if $! =~ /^Interrupted/;
- error("failed to read $srcfile: $!", $cleanup);
- }
- my $offset = 0;
- while ($len) {
- defined($written = syswrite $destfd, $buf, $len, $offset)
- or error("failed to write $destfile: $!", $cleanup);
- $len -= $written;
- $offset += $written;
- }
- }
- }
- sub render ($) {
- my $file=shift;
-
- my $type=pagetype($file);
- my $srcfile=srcfile($file);
- if (defined $type) {
- my $page=pagename($file);
- delete $depends{$page};
- delete $depends_simple{$page};
- will_render($page, htmlpage($page), 1);
- return if $type=~/^_/;
-
- my $content=htmlize($page, $page, $type,
- linkify($page, $page,
- preprocess($page, $page,
- filter($page, $page,
- readfile($srcfile)))));
-
- my $output=htmlpage($page);
- writefile($output, $config{destdir}, genpage($page, $content));
- }
- else {
- delete $depends{$file};
- delete $depends_simple{$file};
- will_render($file, $file, 1);
-
- if ($config{hardlink}) {
- # only hardlink if owned by same user
- my @stat=stat($srcfile);
- if ($stat[4] == $>) {
- prep_writefile($file, $config{destdir});
- unlink($config{destdir}."/".$file);
- if (link($srcfile, $config{destdir}."/".$file)) {
- return;
- }
- }
- # if hardlink fails, fall back to copying
- }
-
- my $srcfd=readfile($srcfile, 1, 1);
- writefile($file, $config{destdir}, undef, 1, sub {
- fast_file_copy($srcfile, $file, $srcfd, @_);
- });
- }
- }
- sub prune ($) {
- my $file=shift;
- unlink($file);
- my $dir=dirname($file);
- while (rmdir($dir)) {
- $dir=dirname($dir);
- }
- }
- sub srcdir_check () {
- # security check, avoid following symlinks in the srcdir path by default
- my $test=$config{srcdir};
- while (length $test) {
- if (-l $test && ! $config{allow_symlinks_before_srcdir}) {
- error(sprintf(gettext("symlink found in srcdir path (%s) -- set allow_symlinks_before_srcdir to allow this"), $test));
- }
- unless ($test=~s/\/+$//) {
- $test=dirname($test);
- }
- }
-
- }
- sub find_src_files () {
- my (@files, %pages);
- eval q{use File::Find};
- error($@) if $@;
- find({
- no_chdir => 1,
- wanted => sub {
- $_=decode_utf8($_);
- if (file_pruned($_, $config{srcdir})) {
- $File::Find::prune=1;
- }
- elsif (! -l $_ && ! -d _) {
- my ($f)=/$config{wiki_file_regexp}/; # untaint
- if (! defined $f) {
- warn(sprintf(gettext("skipping bad filename %s"), $_)."\n");
- }
- else {
- $f=~s/^\Q$config{srcdir}\E\/?//;
- push @files, $f;
- my $pagename = pagename($f);
- if ($pages{$pagename}) {
- debug(sprintf(gettext("%s has multiple possible source pages"), $pagename));
- }
- $pages{$pagename}=1;
- }
- }
- },
- }, $config{srcdir});
- foreach my $dir (@{$config{underlaydirs}}, $config{underlaydir}) {
- find({
- no_chdir => 1,
- wanted => sub {
- $_=decode_utf8($_);
- if (file_pruned($_, $dir)) {
- $File::Find::prune=1;
- }
- elsif (! -l $_ && ! -d _) {
- my ($f)=/$config{wiki_file_regexp}/; # untaint
- if (! defined $f) {
- warn(sprintf(gettext("skipping bad filename %s"), $_)."\n");
- }
- else {
- $f=~s/^\Q$dir\E\/?//;
- # avoid underlaydir
- # override attacks; see
- # security.mdwn
- if (! -l "$config{srcdir}/$f" &&
- ! -e _) {
- my $page=pagename($f);
- if (! $pages{$page}) {
- push @files, $f;
- $pages{$page}=1;
- }
- }
- }
- }
- },
- }, $dir);
- };
- # Returns a list of all source files found, and a hash of
- # the corresponding page names.
- return \@files, \%pages;
- }
- sub refresh () {
- srcdir_check();
- run_hooks(refresh => sub { shift->() });
- my ($files, $exists)=find_src_files();
- my (%rendered, @add, @del, @internal, @internal_change);
- # check for added or removed pages
- foreach my $file (@$files) {
- my $page=pagename($file);
- if (exists $pagesources{$page} && $pagesources{$page} ne $file) {
- # the page has changed its type
- $forcerebuild{$page}=1;
- }
- $pagesources{$page}=$file;
- if (! $pagemtime{$page}) {
- if (isinternal($page)) {
- push @internal, $file;
- }
- else {
- push @add, $file;
- if ($config{getctime} && -e "$config{srcdir}/$file") {
- eval {
- my $time=rcs_getctime("$config{srcdir}/$file");
- $pagectime{$page}=$time;
- };
- if ($@) {
- print STDERR $@;
- }
- }
- }
- $pagecase{lc $page}=$page;
- if (! exists $pagectime{$page}) {
- $pagectime{$page}=(srcfile_stat($file))[10];
- }
- }
- }
- foreach my $page (keys %pagemtime) {
- if (! $exists->{$page}) {
- if (isinternal($page)) {
- push @internal, $pagesources{$page};
- }
- else {
- debug(sprintf(gettext("removing old page %s"), $page));
- push @del, $pagesources{$page};
- }
- $links{$page}=[];
- $renderedfiles{$page}=[];
- $pagemtime{$page}=0;
- foreach my $old (@{$oldrenderedfiles{$page}}) {
- prune($config{destdir}."/".$old);
- }
- delete $pagesources{$page};
- foreach my $source (keys %destsources) {
- if ($destsources{$source} eq $page) {
- delete $destsources{$source};
- }
- }
- }
- }
- # find changed and new files
- my @needsbuild;
- foreach my $file (@$files) {
- my $page=pagename($file);
- my ($srcfile, @stat)=srcfile_stat($file);
- if (! exists $pagemtime{$page} ||
- $stat[9] > $pagemtime{$page} ||
- $forcerebuild{$page}) {
- $pagemtime{$page}=$stat[9];
- if (isinternal($page)) {
- push @internal_change, $file;
- # Preprocess internal page in scan-only mode.
- preprocess($page, $page, readfile($srcfile), 1);
- }
- else {
- push @needsbuild, $file;
- }
- }
- }
- run_hooks(needsbuild => sub { shift->(\@needsbuild) });
- # scan and render files
- foreach my $file (@needsbuild) {
- debug(sprintf(gettext("scanning %s"), $file));
- scan($file);
- }
- calculate_links();
- foreach my $file (@needsbuild) {
- debug(sprintf(gettext("building %s"), $file));
- render($file);
- $rendered{$file}=1;
- }
- foreach my $file (@internal, @internal_change) {
- # internal pages are not rendered
- my $page=pagename($file);
- delete $depends{$page};
- delete $depends_simple{$page};
- foreach my $old (@{$renderedfiles{$page}}) {
- delete $destsources{$old};
- }
- $renderedfiles{$page}=[];
- }
-
- # rebuild pages that link to added or removed pages
- if (@add || @del) {
- foreach my $f (@add, @del) {
- my $p=pagename($f);
- foreach my $page (keys %{$backlinks{$p}}) {
- my $file=$pagesources{$page};
- next if $rendered{$file};
- debug(sprintf(gettext("building %s, which links to %s"), $file, $p));
- render($file);
- $rendered{$file}=1;
- }
- }
- }
- if (%rendered || @del || @internal || @internal_change) {
- my @changed;
- my $changes;
- do {
- $changes=0;
- @changed=(keys %rendered, @del);
- my @exists_changed=(@add, @del);
-
- my %lc_changed = map { lc(pagename($_)) => 1 } @changed;
- my %lc_exists_changed = map { lc(pagename($_)) => 1 } @exists_changed;
-
- # rebuild dependant pages
- foreach my $f (@$files) {
- next if $rendered{$f};
- my $p=pagename($f);
- my $reason = undef;
-
- if (exists $depends_simple{$p}) {
- foreach my $d (keys %{$depends_simple{$p}}) {
- if (($depends_simple{$p}{$d} & $IkiWiki::DEPEND_CONTENT &&
- exists $lc_changed{$d})
- ||
- ($depends_simple{$p}{$d} & $IkiWiki::DEPEND_PRESENCE &&
- exists $lc_exists_changed{$d})) {
- $reason = $d;
- last;
- }
- }
- }
-
- if (exists $depends{$p} && ! defined $reason) {
- D: foreach my $d (keys %{$depends{$p}}) {
- my $sub=pagespec_translate($d);
- next if $@ || ! defined $sub;
-
- my @candidates;
- if ($depends_simple{$p}{$d} & $IkiWiki::DEPEND_CONTENT) {
- @candidates=@changed;
- }
- elsif ($depends{$p}{$d} & $IkiWiki::DEPEND_PRESENCE) {
- @candidates=@exists_changed;
- }
- # only consider internal files
- # if the page explicitly depends
- # on such files
- if ($d =~ /internal\(/) {
- if ($depends_simple{$p}{$d} & $IkiWiki::DEPEND_CONTENT) {
- push @candidates, @internal, @internal_change;
- }
- elsif ($depends{$p}{$d} & $IkiWiki::DEPEND_PRESENCE) {
- push @candidates, @internal;
- }
- }
-
- foreach my $file (@candidates) {
- next if $file eq $f;
- my $page=pagename($file);
- if ($sub->($page, location => $p)) {
- $reason = $page;
- last D;
- }
- }
- }
- }
-
- if (defined $reason) {
- debug(sprintf(gettext("building %s, which depends on %s"), $f, $reason));
- render($f);
- $rendered{$f}=1;
- $changes++;
- last;
- }
- }
- } while $changes;
-
- # handle backlinks; if a page has added/removed links,
- # update the pages it links to
- my %linkchanged;
- foreach my $file (@changed) {
- my $page=pagename($file);
-
- if (exists $links{$page}) {
- foreach my $link (map { bestlink($page, $_) } @{$links{$page}}) {
- if (length $link &&
- (! exists $oldlinks{$page} ||
- ! grep { bestlink($page, $_) eq $link } @{$oldlinks{$page}})) {
- $linkchanged{$link}=1;
- }
- }
- }
- if (exists $oldlinks{$page}) {
- foreach my $link (map { bestlink($page, $_) } @{$oldlinks{$page}}) {
- if (length $link &&
- (! exists $links{$page} ||
- ! grep { bestlink($page, $_) eq $link } @{$links{$page}})) {
- $linkchanged{$link}=1;
- }
- }
- }
- }
- foreach my $link (keys %linkchanged) {
- my $linkfile=$pagesources{$link};
- if (defined $linkfile) {
- next if $rendered{$linkfile};
- debug(sprintf(gettext("building %s, to update its backlinks"), $linkfile));
- render($linkfile);
- $rendered{$linkfile}=1;
- }
- }
- }
- # remove no longer rendered files
- foreach my $src (keys %rendered) {
- my $page=pagename($src);
- foreach my $file (@{$oldrenderedfiles{$page}}) {
- if (! grep { $_ eq $file } @{$renderedfiles{$page}}) {
- debug(sprintf(gettext("removing %s, no longer built by %s"), $file, $page));
- prune($config{destdir}."/".$file);
- }
- }
- }
- if (@del) {
- run_hooks(delete => sub { shift->(@del) });
- }
- if (%rendered) {
- run_hooks(change => sub { shift->(keys %rendered) });
- }
- }
- sub commandline_render () {
- lockwiki();
- loadindex();
- unlockwiki();
- my $srcfile=possibly_foolish_untaint($config{render});
- my $file=$srcfile;
- $file=~s/\Q$config{srcdir}\E\/?//;
- my $type=pagetype($file);
- die sprintf(gettext("ikiwiki: cannot build %s"), $srcfile)."\n" unless defined $type;
- my $content=readfile($srcfile);
- my $page=pagename($file);
- $pagesources{$page}=$file;
- $content=filter($page, $page, $content);
- $content=preprocess($page, $page, $content);
- $content=linkify($page, $page, $content);
- $content=htmlize($page, $page, $type, $content);
- $pagemtime{$page}=(stat($srcfile))[9];
- $pagectime{$page}=$pagemtime{$page} if ! exists $pagectime{$page};
- print genpage($page, $content);
- exit 0;
- }
- 1
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