493 lines
11 KiB
Perl
493 lines
11 KiB
Perl
#!/usr/bin/perl
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package IkiWiki;
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use warnings;
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use strict;
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use Encode;
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use open qw{:utf8 :std};
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# Optimisation.
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use Memoize;
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memoize("abs2rel");
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use vars qw{%config %links %oldlinks %oldpagemtime %pagectime
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%renderedfiles %pagesources %depends %hooks};
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sub defaultconfig () { #{{{
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wiki_file_prune_regexp => qr{((^|/).svn/|\.\.|^\.|\/\.|\.html?$|\.rss$)},
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wiki_link_regexp => qr/\[\[(?:([^\]\|]+)\|)?([^\s\]]+)\]\]/,
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wiki_processor_regexp => qr/\[\[(\w+)\s+([^\]]*)\]\]/,
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wiki_file_regexp => qr/(^[-[:alnum:]_.:\/+]+$)/,
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verbose => 0,
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wikiname => "wiki",
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default_pageext => "mdwn",
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cgi => 0,
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rcs => 'svn',
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notify => 0,
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url => '',
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cgiurl => '',
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historyurl => '',
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diffurl => '',
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anonok => 0,
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rss => 0,
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discussion => 1,
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rebuild => 0,
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refresh => 0,
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getctime => 0,
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w3mmode => 0,
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wrapper => undef,
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wrappermode => undef,
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svnrepo => undef,
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svnpath => "trunk",
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srcdir => undef,
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destdir => undef,
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pingurl => [],
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templatedir => "/usr/share/ikiwiki/templates",
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underlaydir => "/usr/share/ikiwiki/basewiki",
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setup => undef,
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adminuser => undef,
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adminemail => undef,
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plugin => [qw{mdwn inline htmlscrubber}],
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timeformat => '%c',
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} #}}}
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sub checkconfig () { #{{{
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if ($config{w3mmode}) {
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eval q{use Cwd q{abs_path}};
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$config{srcdir}=possibly_foolish_untaint(abs_path($config{srcdir}));
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$config{destdir}=possibly_foolish_untaint(abs_path($config{destdir}));
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$config{cgiurl}="file:///\$LIB/ikiwiki-w3m.cgi/".$config{cgiurl}
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unless $config{cgiurl} =~ m!file:///!;
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$config{url}="file://".$config{destdir};
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}
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if ($config{cgi} && ! length $config{url}) {
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error("Must specify url to wiki with --url when using --cgi\n");
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}
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if ($config{rss} && ! length $config{url}) {
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error("Must specify url to wiki with --url when using --rss\n");
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}
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$config{wikistatedir}="$config{srcdir}/.ikiwiki"
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unless exists $config{wikistatedir};
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if ($config{rcs}) {
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eval qq{require IkiWiki::Rcs::$config{rcs}};
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if ($@) {
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error("Failed to load RCS module IkiWiki::Rcs::$config{rcs}: $@");
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}
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}
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else {
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require IkiWiki::Rcs::Stub;
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}
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foreach my $plugin (@{$config{plugin}}) {
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my $mod="IkiWiki::Plugin::".possibly_foolish_untaint($plugin);
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eval qq{use $mod};
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if ($@) {
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error("Failed to load plugin $mod: $@");
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}
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}
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if (exists $hooks{checkconfig}) {
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foreach my $id (keys %{$hooks{checkconfig}}) {
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$hooks{checkconfig}{$id}{call}->();
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}
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}
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} #}}}
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sub error ($) { #{{{
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if ($config{cgi}) {
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print "Content-type: text/html\n\n";
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print misctemplate("Error", "<p>Error: @_</p>");
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}
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die @_;
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} #}}}
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sub debug ($) { #{{{
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return unless $config{verbose};
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if (! $config{cgi}) {
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print "@_\n";
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}
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else {
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print STDERR "@_\n";
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}
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} #}}}
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sub possibly_foolish_untaint ($) { #{{{
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my $tainted=shift;
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my ($untainted)=$tainted=~/(.*)/;
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return $untainted;
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} #}}}
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sub basename ($) { #{{{
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my $file=shift;
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$file=~s!.*/+!!;
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return $file;
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} #}}}
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sub dirname ($) { #{{{
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my $file=shift;
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$file=~s!/*[^/]+$!!;
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return $file;
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} #}}}
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sub pagetype ($) { #{{{
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my $page=shift;
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if ($page =~ /\.([^.]+)$/) {
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return $1 if exists $hooks{htmlize}{$1};
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}
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return undef;
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} #}}}
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sub pagename ($) { #{{{
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my $file=shift;
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my $type=pagetype($file);
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my $page=$file;
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$page=~s/\Q.$type\E*$// if defined $type;
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return $page;
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} #}}}
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sub htmlpage ($) { #{{{
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my $page=shift;
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return $page.".html";
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} #}}}
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sub srcfile ($) { #{{{
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my $file=shift;
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return "$config{srcdir}/$file" if -e "$config{srcdir}/$file";
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return "$config{underlaydir}/$file" if -e "$config{underlaydir}/$file";
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error("internal error: $file cannot be found");
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} #}}}
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sub readfile ($;$) { #{{{
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my $file=shift;
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my $binary=shift;
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if (-l $file) {
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error("cannot read a symlink ($file)");
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}
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local $/=undef;
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open (IN, $file) || error("failed to read $file: $!");
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binmode(IN) if ($binary);
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my $ret=<IN>;
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close IN;
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return $ret;
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} #}}}
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sub writefile ($$$;$) { #{{{
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my $file=shift; # can include subdirs
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my $destdir=shift; # directory to put file in
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my $content=shift;
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my $binary=shift;
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my $test=$file;
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while (length $test) {
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if (-l "$destdir/$test") {
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error("cannot write to a symlink ($test)");
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}
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$test=dirname($test);
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}
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my $dir=dirname("$destdir/$file");
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if (! -d $dir) {
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my $d="";
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foreach my $s (split(m!/+!, $dir)) {
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$d.="$s/";
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if (! -d $d) {
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mkdir($d) || error("failed to create directory $d: $!");
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}
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}
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}
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open (OUT, ">$destdir/$file") || error("failed to write $destdir/$file: $!");
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binmode(OUT) if ($binary);
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print OUT $content;
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close OUT;
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} #}}}
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sub bestlink ($$) { #{{{
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# Given a page and the text of a link on the page, determine which
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# existing page that link best points to. Prefers pages under a
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# subdirectory with the same name as the source page, failing that
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# goes down the directory tree to the base looking for matching
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# pages.
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my $page=shift;
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my $link=lc(shift);
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my $cwd=$page;
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do {
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my $l=$cwd;
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$l.="/" if length $l;
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$l.=$link;
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if (exists $links{$l}) {
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#debug("for $page, \"$link\", use $l");
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return $l;
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}
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} while $cwd=~s!/?[^/]+$!!;
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#print STDERR "warning: page $page, broken link: $link\n";
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return "";
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} #}}}
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sub isinlinableimage ($) { #{{{
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my $file=shift;
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$file=~/\.(png|gif|jpg|jpeg)$/i;
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} #}}}
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sub pagetitle ($) { #{{{
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my $page=shift;
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$page=~s/__(\d+)__/&#$1;/g;
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$page=~y/_/ /;
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return $page;
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} #}}}
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sub titlepage ($) { #{{{
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my $title=shift;
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$title=~y/ /_/;
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$title=~s/([^-[:alnum:]_:+\/.])/"__".ord($1)."__"/eg;
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return $title;
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} #}}}
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sub cgiurl (@) { #{{{
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my %params=@_;
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return $config{cgiurl}."?".join("&", map "$_=$params{$_}", keys %params);
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} #}}}
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sub styleurl (;$) { #{{{
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my $page=shift;
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return "$config{url}/style.css" if ! defined $page;
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$page=~s/[^\/]+$//;
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$page=~s/[^\/]+\//..\//g;
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return $page."style.css";
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} #}}}
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sub abs2rel ($$) {
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# Work around very innefficient behavior in File::Spec if abs2rel
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# is passed two relative paths. It's much faster if paths are
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# absolute!
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my $path="/".shift;
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my $base="/".shift;
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require File::Spec;
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my $ret=File::Spec->abs2rel($path, $base);
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$ret=~s/^// if defined $ret;
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return $ret;
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}
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sub htmllink ($$$;$$$) { #{{{
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my $lpage=shift; # the page doing the linking
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my $page=shift; # the page that will contain the link (different for inline)
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my $link=shift;
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my $noimageinline=shift; # don't turn links into inline html images
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my $forcesubpage=shift; # force a link to a subpage
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my $linktext=shift; # set to force the link text to something
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my $bestlink;
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if (! $forcesubpage) {
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$bestlink=bestlink($lpage, $link);
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}
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else {
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$bestlink="$lpage/".lc($link);
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}
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$linktext=pagetitle(basename($link)) unless defined $linktext;
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return $linktext if length $bestlink && $page eq $bestlink;
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# TODO BUG: %renderedfiles may not have it, if the linked to page
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# was also added and isn't yet rendered! Note that this bug is
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# masked by the bug that makes all new files be rendered twice.
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if (! grep { $_ eq $bestlink } values %renderedfiles) {
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$bestlink=htmlpage($bestlink);
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}
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if (! grep { $_ eq $bestlink } values %renderedfiles) {
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return "<span><a href=\"".
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cgiurl(do => "create", page => $link, from => $page).
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"\">?</a>$linktext</span>"
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}
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$bestlink=abs2rel($bestlink, dirname($page));
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if (! $noimageinline && isinlinableimage($bestlink)) {
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return "<img src=\"$bestlink\" alt=\"$linktext\" />";
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}
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return "<a href=\"$bestlink\">$linktext</a>";
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} #}}}
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sub indexlink () { #{{{
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return "<a href=\"$config{url}\">$config{wikiname}</a>";
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} #}}}
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sub lockwiki () { #{{{
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# Take an exclusive lock on the wiki to prevent multiple concurrent
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# run issues. The lock will be dropped on program exit.
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if (! -d $config{wikistatedir}) {
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mkdir($config{wikistatedir});
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}
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open(WIKILOCK, ">$config{wikistatedir}/lockfile") ||
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error ("cannot write to $config{wikistatedir}/lockfile: $!");
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if (! flock(WIKILOCK, 2 | 4)) {
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debug("wiki seems to be locked, waiting for lock");
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my $wait=600; # arbitrary, but don't hang forever to
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# prevent process pileup
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for (1..600) {
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return if flock(WIKILOCK, 2 | 4);
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sleep 1;
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}
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error("wiki is locked; waited $wait seconds without lock being freed (possible stuck process or stale lock?)");
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}
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} #}}}
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sub unlockwiki () { #{{{
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close WIKILOCK;
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} #}}}
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sub loadindex () { #{{{
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open (IN, "$config{wikistatedir}/index") || return;
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while (<IN>) {
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$_=possibly_foolish_untaint($_);
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chomp;
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my %items;
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$items{link}=[];
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foreach my $i (split(/ /, $_)) {
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my ($item, $val)=split(/=/, $i, 2);
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push @{$items{$item}}, $val;
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}
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next unless exists $items{src}; # skip bad lines for now
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my $page=pagename($items{src}[0]);
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if (! $config{rebuild}) {
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$pagesources{$page}=$items{src}[0];
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$oldpagemtime{$page}=$items{mtime}[0];
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$oldlinks{$page}=[@{$items{link}}];
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$links{$page}=[@{$items{link}}];
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$depends{$page}=join(" ", @{$items{depends}})
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if exists $items{depends};
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$renderedfiles{$page}=$items{dest}[0];
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}
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$pagectime{$page}=$items{ctime}[0];
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}
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close IN;
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} #}}}
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sub saveindex () { #{{{
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if (! -d $config{wikistatedir}) {
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mkdir($config{wikistatedir});
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}
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open (OUT, ">$config{wikistatedir}/index") ||
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error("cannot write to $config{wikistatedir}/index: $!");
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foreach my $page (keys %oldpagemtime) {
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next unless $oldpagemtime{$page};
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my $line="mtime=$oldpagemtime{$page} ".
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"ctime=$pagectime{$page} ".
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"src=$pagesources{$page} ".
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"dest=$renderedfiles{$page}";
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$line.=" link=$_" foreach @{$links{$page}};
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if (exists $depends{$page}) {
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$line.=" depends=$_" foreach split " ", $depends{$page};
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}
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print OUT $line."\n";
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}
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close OUT;
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} #}}}
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sub template_params (@) { #{{{
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my $filename=shift;
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require HTML::Template;
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return filter => sub {
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my $text_ref = shift;
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$$text_ref=&Encode::decode_utf8($$text_ref);
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},
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filename => "$config{templatedir}/$filename", @_;
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} #}}}
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sub template ($;@) { #{{{
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HTML::Template->new(template_params(@_));
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} #}}}
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sub misctemplate ($$) { #{{{
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my $title=shift;
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my $pagebody=shift;
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my $template=template("misc.tmpl");
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$template->param(
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title => $title,
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indexlink => indexlink(),
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wikiname => $config{wikiname},
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pagebody => $pagebody,
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styleurl => styleurl(),
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baseurl => "$config{url}/",
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);
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return $template->output;
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}#}}}
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sub glob_match ($$) { #{{{
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my $page=shift;
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my $glob=shift;
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if ($glob =~ /^link\((.+)\)$/) {
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my $rev = $links{$page} or return undef;
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foreach my $p (@$rev) {
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return 1 if lc $p eq $1;
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}
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return 0;
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} elsif ($glob =~ /^backlink\((.+)\)$/) {
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my $rev = $links{$1} or return undef;
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foreach my $p (@$rev) {
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return 1 if lc $p eq $page;
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}
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return 0;
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} else {
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# turn glob into safe regexp
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$glob=quotemeta($glob);
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$glob=~s/\\\*/.*/g;
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$glob=~s/\\\?/./g;
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$glob=~s!\\/!/!g;
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return $page=~/^$glob$/i;
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}
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} #}}}
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sub globlist_match ($$) { #{{{
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my $page=shift;
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my @globlist=split(" ", shift);
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# check any negated globs first
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foreach my $glob (@globlist) {
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return 0 if $glob=~/^!(.*)/ && glob_match($page, $1);
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}
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foreach my $glob (@globlist) {
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return 1 if glob_match($page, $glob);
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}
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return 0;
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} #}}}
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sub hook (@) { # {{{
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my %param=@_;
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if (! exists $param{type} || ! ref $param{call} || ! exists $param{id}) {
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error "hook requires type, call, and id parameters";
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}
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$hooks{$param{type}}{$param{id}}=\%param;
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} # }}}
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1
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