-
- open (OUT, ">$file") || error("failed to write $file: $!");
- print OUT $content;
- close OUT;
-} #}}}
-
-sub bestlink ($$) { #{{{
- # Given a page and the text of a link on the page, determine which
- # existing page that link best points to. Prefers pages under a
- # subdirectory with the same name as the source page, failing that
- # goes down the directory tree to the base looking for matching
- # pages.
- my $page=shift;
- my $link=lc(shift);
-
- my $cwd=$page;
- do {
- my $l=$cwd;
- $l.="/" if length $l;
- $l.=$link;
-
- if (exists $links{$l}) {
- #debug("for $page, \"$link\", use $l");
- return $l;
- }
- } while $cwd=~s!/?[^/]+$!!;
-
- #print STDERR "warning: page $page, broken link: $link\n";
- return "";
-} #}}}
-
-sub isinlinableimage ($) { #{{{
- my $file=shift;
-
- $file=~/\.(png|gif|jpg|jpeg)$/i;
-} #}}}
-
-sub pagetitle ($) { #{{{
- my $page=shift;
- $page=~s/__(\d+)__/&#$1;/g;
- $page=~y/_/ /;
- return $page;
-} #}}}
-
-sub titlepage ($) { #{{{
- my $title=shift;
- $title=~y/ /_/;
- $title=~s/([^-A-Za-z0-9_:+\/.])/"__".ord($1)."__"/eg;
- return $title;
-} #}}}
-
-sub cgiurl (@) { #{{{
- my %params=@_;
-
- return $config{cgiurl}."?".join("&", map "$_=$params{$_}", keys %params);
-} #}}}
-
-sub styleurl (;$) { #{{{
- my $page=shift;
-
- return "$config{url}/style.css" if ! defined $page;
-
- $page=~s/[^\/]+$//;
- $page=~s/[^\/]+\//..\//g;
- return $page."style.css";
-} #}}}
-
-sub htmllink ($$;$$$) { #{{{
- my $page=shift;
- my $link=shift;
- my $noimageinline=shift; # don't turn links into inline html images
- my $forcesubpage=shift; # force a link to a subpage
- my $linktext=shift; # set to force the link text to something
-
- my $bestlink;
- if (! $forcesubpage) {
- $bestlink=bestlink($page, $link);
- }
- else {
- $bestlink="$page/".lc($link);
- }
-
- $linktext=pagetitle(basename($link)) unless defined $linktext;
-
- return $linktext if length $bestlink && $page eq $bestlink;
-
- # TODO BUG: %renderedfiles may not have it, if the linked to page
- # was also added and isn't yet rendered! Note that this bug is
- # masked by the bug mentioned below that makes all new files
- # be rendered twice.
- if (! grep { $_ eq $bestlink } values %renderedfiles) {
- $bestlink=htmlpage($bestlink);
- }
- if (! grep { $_ eq $bestlink } values %renderedfiles) {
- return "<span><a href=\"".
- cgiurl(do => "create", page => $link, from =>$page).
- "\">?</a>$linktext</span>"
- }
-
- $bestlink=File::Spec->abs2rel($bestlink, dirname($page));
-
- if (! $noimageinline && isinlinableimage($bestlink)) {
- return "<img src=\"$bestlink\" alt=\"$linktext\" />";
- }
- return "<a href=\"$bestlink\">$linktext</a>";
-} #}}}
-
-sub indexlink () { #{{{
- return "<a href=\"$config{url}\">$config{wikiname}</a>";
-} #}}}
-
-sub lockwiki () { #{{{
- # Take an exclusive lock on the wiki to prevent multiple concurrent
- # run issues. The lock will be dropped on program exit.
- if (! -d $config{wikistatedir}) {
- mkdir($config{wikistatedir});
- }
- open(WIKILOCK, ">$config{wikistatedir}/lockfile") ||
- error ("cannot write to $config{wikistatedir}/lockfile: $!");
- if (! flock(WIKILOCK, 2 | 4)) {
- debug("wiki seems to be locked, waiting for lock");
- my $wait=600; # arbitrary, but don't hang forever to
- # prevent process pileup
- for (1..600) {
- return if flock(WIKILOCK, 2 | 4);
- sleep 1;
- }
- error("wiki is locked; waited $wait seconds without lock being freed (possible stuck process or stale lock?)");
- }
-} #}}}
-
-sub unlockwiki () { #{{{
- close WIKILOCK;
-} #}}}
-
-sub loadindex () { #{{{
- open (IN, "$config{wikistatedir}/index") || return;
- while (<IN>) {
- $_=possibly_foolish_untaint($_);
- chomp;
- my %items;
- $items{link}=[];
- foreach my $i (split(/ /, $_)) {
- my ($item, $val)=split(/=/, $i, 2);
- push @{$items{$item}}, $val;
- }
-
- next unless exists $items{src}; # skip bad lines for now
-
- my $page=pagename($items{src}[0]);
- if (! $config{rebuild}) {
- $pagesources{$page}=$items{src}[0];
- $oldpagemtime{$page}=$items{mtime}[0];
- $oldlinks{$page}=[@{$items{link}}];
- $links{$page}=[@{$items{link}}];
- $inlinepages{$page}=join(" ", @{$items{inlinepage}})
- if exists $items{inlinepage};
- $renderedfiles{$page}=$items{dest}[0];
- }
- $pagectime{$page}=$items{ctime}[0];
- }
- close IN;
-} #}}}
-
-sub saveindex () { #{{{
- if (! -d $config{wikistatedir}) {
- mkdir($config{wikistatedir});
- }
- open (OUT, ">$config{wikistatedir}/index") ||
- error("cannot write to $config{wikistatedir}/index: $!");
- foreach my $page (keys %oldpagemtime) {
- next unless $oldpagemtime{$page};
- my $line="mtime=$oldpagemtime{$page} ".
- "ctime=$pagectime{$page} ".
- "src=$pagesources{$page} ".
- "dest=$renderedfiles{$page}";
- $line.=" link=$_" foreach @{$links{$page}};
- if (exists $inlinepages{$page}) {
- $line.=" inlinepage=$_" foreach split " ", $inlinepages{$page};
- }
- print OUT $line."\n";
- }
- close OUT;
-} #}}}
-
-sub misctemplate ($$) { #{{{
- my $title=shift;
- my $pagebody=shift;
-
- my $template=HTML::Template->new(
- filename => "$config{templatedir}/misc.tmpl"
- );
- $template->param(
- title => $title,
- indexlink => indexlink(),
- wikiname => $config{wikiname},
- pagebody => $pagebody,
- styleurl => styleurl(),
- );
- return $template->output;
-}#}}}
-
-sub userinfo_get ($$) { #{{{
- my $user=shift;
- my $field=shift;
-
- eval q{use Storable};
- my $userdata=eval{ Storable::lock_retrieve("$config{wikistatedir}/userdb") };
- if (! defined $userdata || ! ref $userdata ||
- ! exists $userdata->{$user} || ! ref $userdata->{$user} ||
- ! exists $userdata->{$user}->{$field}) {
- return "";
- }
- return $userdata->{$user}->{$field};
-} #}}}
-
-sub userinfo_set ($$$) { #{{{
- my $user=shift;
- my $field=shift;
- my $value=shift;
-
- eval q{use Storable};
- my $userdata=eval{ Storable::lock_retrieve("$config{wikistatedir}/userdb") };
- if (! defined $userdata || ! ref $userdata ||
- ! exists $userdata->{$user} || ! ref $userdata->{$user}) {
- return "";
- }
-
- $userdata->{$user}->{$field}=$value;
- my $oldmask=umask(077);
- my $ret=Storable::lock_store($userdata, "$config{wikistatedir}/userdb");
- umask($oldmask);
- return $ret;
-} #}}}
-
-sub userinfo_setall ($$) { #{{{
- my $user=shift;
- my $info=shift;
-
- eval q{use Storable};
- my $userdata=eval{ Storable::lock_retrieve("$config{wikistatedir}/userdb") };
- if (! defined $userdata || ! ref $userdata) {
- $userdata={};
- }
- $userdata->{$user}=$info;
- my $oldmask=umask(077);
- my $ret=Storable::lock_store($userdata, "$config{wikistatedir}/userdb");
- umask($oldmask);
- return $ret;
-} #}}}
-
-sub is_admin ($) { #{{{
- my $user_name=shift;
-
- return grep { $_ eq $user_name } @{$config{adminuser}};
-} #}}}
-
-sub glob_match ($$) { #{{{
- my $page=shift;
- my $glob=shift;
-
- # turn glob into safe regexp
- $glob=quotemeta($glob);
- $glob=~s/\\\*/.*/g;
- $glob=~s/\\\?/./g;
- $glob=~s!\\/!/!g;
-
- $page=~/^$glob$/i;
-} #}}}
-
-sub globlist_match ($$) { #{{{
- my $page=shift;
- my @globlist=split(" ", shift);
-
- # check any negated globs first
- foreach my $glob (@globlist) {
- return 0 if $glob=~/^!(.*)/ && glob_match($page, $1);
- }
-
- foreach my $glob (@globlist) {
- return 1 if glob_match($page, $glob);
- }
-
- return 0;