ikiwiki/IkiWiki.pm

935 lines
20 KiB
Perl

#!/usr/bin/perl
package IkiWiki;
use warnings;
use strict;
use Encode;
use HTML::Entities;
use open qw{:utf8 :std};
use vars qw{%config %links %oldlinks %oldpagemtime %pagectime %pagecase
%renderedfiles %oldrenderedfiles %pagesources %depends %hooks
%forcerebuild $gettext_obj};
use Exporter q{import};
our @EXPORT = qw(hook debug error template htmlpage add_depends pagespec_match
bestlink htmllink readfile writefile pagetype srcfile pagename
displaytime will_render gettext
%config %links %renderedfiles %pagesources);
our $VERSION = 1.01; # plugin interface version
# Optimisation.
use Memoize;
memoize("abs2rel");
memoize("pagespec_translate");
memoize("file_pruned");
my $installdir=''; # INSTALLDIR_AUTOREPLACE done by Makefile, DNE
our $version='unknown'; # VERSION_AUTOREPLACE done by Makefile, DNE
sub defaultconfig () { #{{{
wiki_file_prune_regexps => [qr/\.\./, qr/^\./, qr/\/\./, qr/\.x?html?$/,
qr/(^|\/).svn\//, qr/.arch-ids\//, qr/{arch}\//],
wiki_link_regexp => qr/\[\[(?:([^\]\|]+)\|)?([^\s\]]+)\]\]/,
wiki_file_regexp => qr/(^[-[:alnum:]_.:\/+]+$)/,
web_commit_regexp => qr/^web commit (by (.*?(?=: |$))|from (\d+\.\d+\.\d+\.\d+)):?(.*)/,
verbose => 0,
syslog => 0,
wikiname => "wiki",
default_pageext => "mdwn",
cgi => 0,
rcs => '',
notify => 0,
url => '',
cgiurl => '',
historyurl => '',
diffurl => '',
rss => 0,
atom => 0,
discussion => 1,
rebuild => 0,
refresh => 0,
getctime => 0,
w3mmode => 0,
wrapper => undef,
wrappermode => undef,
svnrepo => undef,
svnpath => "trunk",
gitorigin_branch => "origin",
gitmaster_branch => "master",
srcdir => undef,
destdir => undef,
pingurl => [],
templatedir => "$installdir/share/ikiwiki/templates",
underlaydir => "$installdir/share/ikiwiki/basewiki",
setup => undef,
adminuser => undef,
adminemail => undef,
plugin => [qw{mdwn inline htmlscrubber passwordauth signinedit lockedit}],
timeformat => '%c',
locale => undef,
sslcookie => 0,
httpauth => 0,
userdir => "",
} #}}}
sub checkconfig () { #{{{
# locale stuff; avoid LC_ALL since it overrides everything
if (defined $ENV{LC_ALL}) {
$ENV{LANG} = $ENV{LC_ALL};
delete $ENV{LC_ALL};
}
if (defined $config{locale}) {
eval q{use POSIX};
error($@) if $@;
if (POSIX::setlocale(&POSIX::LC_ALL, $config{locale})) {
$ENV{LANG}=$config{locale};
$gettext_obj=undef;
}
}
if ($config{w3mmode}) {
eval q{use Cwd q{abs_path}};
error($@) if $@;
$config{srcdir}=possibly_foolish_untaint(abs_path($config{srcdir}));
$config{destdir}=possibly_foolish_untaint(abs_path($config{destdir}));
$config{cgiurl}="file:///\$LIB/ikiwiki-w3m.cgi/".$config{cgiurl}
unless $config{cgiurl} =~ m!file:///!;
$config{url}="file://".$config{destdir};
}
if ($config{cgi} && ! length $config{url}) {
error(gettext("Must specify url to wiki with --url when using --cgi"));
}
$config{wikistatedir}="$config{srcdir}/.ikiwiki"
unless exists $config{wikistatedir};
if ($config{rcs}) {
eval qq{require IkiWiki::Rcs::$config{rcs}};
if ($@) {
error("Failed to load RCS module IkiWiki::Rcs::$config{rcs}: $@");
}
}
else {
require IkiWiki::Rcs::Stub;
}
run_hooks(checkconfig => sub { shift->() });
} #}}}
sub loadplugins () { #{{{
loadplugin($_) foreach @{$config{plugin}};
run_hooks(getopt => sub { shift->() });
if (grep /^-/, @ARGV) {
print STDERR "Unknown option: $_\n"
foreach grep /^-/, @ARGV;
usage();
}
} #}}}
sub loadplugin ($) { #{{{
my $plugin=shift;
return if grep { $_ eq $plugin} @{$config{disable_plugins}};
my $mod="IkiWiki::Plugin::".possibly_foolish_untaint($plugin);
eval qq{use $mod};
if ($@) {
error("Failed to load plugin $mod: $@");
}
} #}}}
sub error ($) { #{{{
if ($config{cgi}) {
print "Content-type: text/html\n\n";
print misctemplate(gettext("Error"),
"<p>".gettext("Error").": @_</p>");
}
log_message(error => @_);
exit(1);
} #}}}
sub debug ($) { #{{{
return unless $config{verbose};
log_message(debug => @_);
} #}}}
my $log_open=0;
sub log_message ($$) { #{{{
my $type=shift;
if ($config{syslog}) {
require Sys::Syslog;
unless ($log_open) {
Sys::Syslog::setlogsock('unix');
Sys::Syslog::openlog('ikiwiki', '', 'user');
$log_open=1;
}
eval {
Sys::Syslog::syslog($type, join(" ", @_));
}
}
elsif (! $config{cgi}) {
print "@_\n";
}
else {
print STDERR "@_\n";
}
} #}}}
sub possibly_foolish_untaint ($) { #{{{
my $tainted=shift;
my ($untainted)=$tainted=~/(.*)/;
return $untainted;
} #}}}
sub basename ($) { #{{{
my $file=shift;
$file=~s!.*/+!!;
return $file;
} #}}}
sub dirname ($) { #{{{
my $file=shift;
$file=~s!/*[^/]+$!!;
return $file;
} #}}}
sub pagetype ($) { #{{{
my $page=shift;
if ($page =~ /\.([^.]+)$/) {
return $1 if exists $hooks{htmlize}{$1};
}
return undef;
} #}}}
sub pagename ($) { #{{{
my $file=shift;
my $type=pagetype($file);
my $page=$file;
$page=~s/\Q.$type\E*$// if defined $type;
return $page;
} #}}}
sub htmlpage ($) { #{{{
my $page=shift;
return $page.".html";
} #}}}
sub srcfile ($) { #{{{
my $file=shift;
return "$config{srcdir}/$file" if -e "$config{srcdir}/$file";
return "$config{underlaydir}/$file" if -e "$config{underlaydir}/$file";
error("internal error: $file cannot be found");
} #}}}
sub readfile ($;$$) { #{{{
my $file=shift;
my $binary=shift;
my $wantfd=shift;
if (-l $file) {
error("cannot read a symlink ($file)");
}
local $/=undef;
open (IN, $file) || error("failed to read $file: $!");
binmode(IN) if ($binary);
return \*IN if $wantfd;
my $ret=<IN>;
close IN;
return $ret;
} #}}}
sub writefile ($$$;$$) { #{{{
my $file=shift; # can include subdirs
my $destdir=shift; # directory to put file in
my $content=shift;
my $binary=shift;
my $wantfd=shift;
my $test=$file;
while (length $test) {
if (-l "$destdir/$test") {
error("cannot write to a symlink ($test)");
}
$test=dirname($test);
}
my $dir=dirname("$destdir/$file");
if (! -d $dir) {
my $d="";
foreach my $s (split(m!/+!, $dir)) {
$d.="$s/";
if (! -d $d) {
mkdir($d) || error("failed to create directory $d: $!");
}
}
}
open (OUT, ">$destdir/$file") || error("failed to write $destdir/$file: $!");
binmode(OUT) if ($binary);
return \*OUT if $wantfd;
print OUT $content;
close OUT;
} #}}}
my %cleared;
sub will_render ($$;$) { #{{{
my $page=shift;
my $dest=shift;
my $clear=shift;
# Important security check.
if (-e "$config{destdir}/$dest" && ! $config{rebuild} &&
! grep { $_ eq $dest } (@{$renderedfiles{$page}}, @{$oldrenderedfiles{$page}})) {
error("$config{destdir}/$dest independently created, not overwriting with version from $page");
}
if (! $clear || $cleared{$page}) {
$renderedfiles{$page}=[$dest, grep { $_ ne $dest } @{$renderedfiles{$page}}];
}
else {
$renderedfiles{$page}=[$dest];
$cleared{$page}=1;
}
} #}}}
sub bestlink ($$) { #{{{
my $page=shift;
my $link=shift;
my $cwd=$page;
if ($link=~s/^\/+//) {
# absolute links
$cwd="";
}
do {
my $l=$cwd;
$l.="/" if length $l;
$l.=$link;
if (exists $links{$l}) {
return $l;
}
elsif (exists $pagecase{lc $l}) {
return $pagecase{lc $l};
}
} while $cwd=~s!/?[^/]+$!!;
if (length $config{userdir} && exists $links{"$config{userdir}/".lc($link)}) {
return "$config{userdir}/".lc($link);
}
#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;
my $unescaped=shift;
if ($unescaped) {
$page=~s/__(\d+)__/chr($1)/eg;
}
else {
$page=~s/__(\d+)__/&#$1;/g;
}
$page=~y/_/ /;
return $page;
} #}}}
sub titlepage ($) { #{{{
my $title=shift;
$title=~y/ /_/;
$title=~s/([^-[:alnum:]_:+\/.])/"__".ord($1)."__"/eg;
return $title;
} #}}}
sub cgiurl (@) { #{{{
my %params=@_;
return $config{cgiurl}."?".join("&amp;", map "$_=$params{$_}", keys %params);
} #}}}
sub baseurl (;$) { #{{{
my $page=shift;
return "$config{url}/" if ! defined $page;
$page=~s/[^\/]+$//;
$page=~s/[^\/]+\//..\//g;
return $page;
} #}}}
sub abs2rel ($$) { #{{{
# Work around very innefficient behavior in File::Spec if abs2rel
# is passed two relative paths. It's much faster if paths are
# absolute! (Debian bug #376658; fixed in debian unstable now)
my $path="/".shift;
my $base="/".shift;
require File::Spec;
my $ret=File::Spec->abs2rel($path, $base);
$ret=~s/^// if defined $ret;
return $ret;
} #}}}
sub displaytime ($) { #{{{
my $time=shift;
eval q{use POSIX};
error($@) if $@;
# strftime doesn't know about encodings, so make sure
# its output is properly treated as utf8
return decode_utf8(POSIX::strftime(
$config{timeformat}, localtime($time)));
} #}}}
sub htmllink ($$$;$$$) { #{{{
my $lpage=shift; # the page doing the linking
my $page=shift; # the page that will contain the link (different for inline)
my $link=shift;
my $noimageinline=shift; # don't turn links into inline html images
my $forcesubpage=shift; # force a link to a subpage
my $linktext=shift; # set to force the link text to something
my $bestlink;
if (! $forcesubpage) {
$bestlink=bestlink($lpage, $link);
}
else {
$bestlink="$lpage/".lc($link);
}
$linktext=pagetitle(basename($link)) unless defined $linktext;
return "<span class=\"selflink\">$linktext</span>"
if length $bestlink && $page eq $bestlink;
if (! grep { $_ eq $bestlink } map { @{$_} } values %renderedfiles) {
$bestlink=htmlpage($bestlink);
}
if (! grep { $_ eq $bestlink } map { @{$_} } values %renderedfiles) {
return $linktext unless length $config{cgiurl};
return "<span><a href=\"".
cgiurl(do => "create", page => lc($link), from => $page).
"\">?</a>$linktext</span>"
}
$bestlink=abs2rel($bestlink, dirname($page));
if (! $noimageinline && isinlinableimage($bestlink)) {
return "<img src=\"$bestlink\" alt=\"$linktext\" />";
}
return "<a href=\"$bestlink\">$linktext</a>";
} #}}}
sub htmlize ($$$) { #{{{
my $page=shift;
my $type=shift;
my $content=shift;
if (exists $hooks{htmlize}{$type}) {
$content=$hooks{htmlize}{$type}{call}->(
page => $page,
content => $content,
);
}
else {
error("htmlization of $type not supported");
}
run_hooks(sanitize => sub {
$content=shift->(
page => $page,
content => $content,
);
});
return $content;
} #}}}
sub linkify ($$$) { #{{{
my $lpage=shift; # the page containing the links
my $page=shift; # the page the link will end up on (different for inline)
my $content=shift;
$content =~ s{(\\?)$config{wiki_link_regexp}}{
$2 ? ( $1 ? "[[$2|$3]]" : htmllink($lpage, $page, titlepage($3), 0, 0, pagetitle($2)))
: ( $1 ? "[[$3]]" : htmllink($lpage, $page, titlepage($3)))
}eg;
return $content;
} #}}}
my %preprocessing;
sub preprocess ($$$;$) { #{{{
my $page=shift; # the page the data comes from
my $destpage=shift; # the page the data will appear in (different for inline)
my $content=shift;
my $scan=shift;
my $handle=sub {
my $escape=shift;
my $command=shift;
my $params=shift;
if (length $escape) {
return "[[$command $params]]";
}
elsif (exists $hooks{preprocess}{$command}) {
return "" if $scan && ! $hooks{preprocess}{$command}{scan};
# Note: preserve order of params, some plugins may
# consider it significant.
my @params;
while ($params =~ /(?:(\w+)=)?(?:"""(.*?)"""|"([^"]+)"|(\S+))(?:\s+|$)/sg) {
my $key=$1;
my $val;
if (defined $2) {
$val=$2;
$val=~s/\r\n/\n/mg;
$val=~s/^\n+//g;
$val=~s/\n+$//g;
}
elsif (defined $3) {
$val=$3;
}
elsif (defined $4) {
$val=$4;
}
if (defined $key) {
push @params, $key, $val;
}
else {
push @params, $val, '';
}
}
if ($preprocessing{$page}++ > 3) {
# Avoid loops of preprocessed pages preprocessing
# other pages that preprocess them, etc.
#translators: The first parameter is a
#translators: preprocessor directive name,
#translators: the second a page name, the
#translators: third a number.
return "[[".sprintf(gettext("%s preprocessing loop detected on %s at depth %i"),
$command, $page, $preprocessing{$page}).
"]]";
}
my $ret=$hooks{preprocess}{$command}{call}->(
@params,
page => $page,
destpage => $destpage,
);
$preprocessing{$page}--;
return $ret;
}
else {
return "[[$command $params]]";
}
};
$content =~ s{(\\?)\[\[(\w+)\s+((?:(?:\w+=)?(?:""".*?"""|"[^"]+"|[^\s\]]+)\s*)*)\]\]}{$handle->($1, $2, $3)}seg;
return $content;
} #}}}
sub filter ($$) { #{{{
my $page=shift;
my $content=shift;
run_hooks(filter => sub {
$content=shift->(page => $page, content => $content);
});
return $content;
} #}}}
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}=[];
$items{dest}=[];
foreach my $i (split(/ /, $_)) {
my ($item, $val)=split(/=/, $i, 2);
push @{$items{$item}}, decode_entities($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}}];
$depends{$page}=$items{depends}[0] if exists $items{depends};
$renderedfiles{$page}=[@{$items{dest}}];
$oldrenderedfiles{$page}=[@{$items{dest}}];
$pagecase{lc $page}=$page;
}
$pagectime{$page}=$items{ctime}[0];
}
close IN;
} #}}}
sub saveindex () { #{{{
run_hooks(savestate => sub { shift->() });
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}";
$line.=" dest=$_" foreach @{$renderedfiles{$page}};
my %count;
$line.=" link=$_" foreach grep { ++$count{$_} == 1 } @{$links{$page}};
if (exists $depends{$page}) {
$line.=" depends=".encode_entities($depends{$page}, " \t\n");
}
print OUT $line."\n";
}
close OUT;
} #}}}
sub template_file ($) { #{{{
my $template=shift;
foreach my $dir ($config{templatedir}, "$installdir/share/ikiwiki/templates") {
return "$dir/$template" if -e "$dir/$template";
}
return undef;
} #}}}
sub template_params (@) { #{{{
my $filename=template_file(shift);
if (! defined $filename) {
return if wantarray;
return "";
}
require HTML::Template;
my @ret=(
filter => sub {
my $text_ref = shift;
$$text_ref=&Encode::decode_utf8($$text_ref);
},
filename => $filename,
loop_context_vars => 1,
die_on_bad_params => 0,
@_
);
return wantarray ? @ret : {@ret};
} #}}}
sub template ($;@) { #{{{
HTML::Template->new(template_params(@_));
} #}}}
sub misctemplate ($$;@) { #{{{
my $title=shift;
my $pagebody=shift;
my $template=template("misc.tmpl");
$template->param(
title => $title,
indexlink => indexlink(),
wikiname => $config{wikiname},
pagebody => $pagebody,
baseurl => baseurl(),
@_,
);
run_hooks(pagetemplate => sub {
shift->(page => "", destpage => "", template => $template);
});
return $template->output;
}#}}}
sub hook (@) { # {{{
my %param=@_;
if (! exists $param{type} || ! ref $param{call} || ! exists $param{id}) {
error "hook requires type, call, and id parameters";
}
return if $param{no_override} && exists $hooks{$param{type}}{$param{id}};
$hooks{$param{type}}{$param{id}}=\%param;
} # }}}
sub run_hooks ($$) { # {{{
# Calls the given sub for each hook of the given type,
# passing it the hook function to call.
my $type=shift;
my $sub=shift;
if (exists $hooks{$type}) {
my @deferred;
foreach my $id (keys %{$hooks{$type}}) {
if ($hooks{$type}{$id}{last}) {
push @deferred, $id;
next;
}
$sub->($hooks{$type}{$id}{call});
}
foreach my $id (@deferred) {
$sub->($hooks{$type}{$id}{call});
}
}
} #}}}
sub globlist_to_pagespec ($) { #{{{
my @globlist=split(' ', shift);
my (@spec, @skip);
foreach my $glob (@globlist) {
if ($glob=~/^!(.*)/) {
push @skip, $glob;
}
else {
push @spec, $glob;
}
}
my $spec=join(" or ", @spec);
if (@skip) {
my $skip=join(" and ", @skip);
if (length $spec) {
$spec="$skip and ($spec)";
}
else {
$spec=$skip;
}
}
return $spec;
} #}}}
sub is_globlist ($) { #{{{
my $s=shift;
$s=~/[^\s]+\s+([^\s]+)/ && $1 ne "and" && $1 ne "or";
} #}}}
sub safequote ($) { #{{{
my $s=shift;
$s=~s/[{}]//g;
return "q{$s}";
} #}}}
sub add_depends ($$) { #{{{
my $page=shift;
my $pagespec=shift;
if (! exists $depends{$page}) {
$depends{$page}=$pagespec;
}
else {
$depends{$page}=pagespec_merge($depends{$page}, $pagespec);
}
} # }}}
sub file_pruned ($$) { #{{{
require File::Spec;
my $file=File::Spec->canonpath(shift);
my $base=File::Spec->canonpath(shift);
$file=~s#^\Q$base\E/*##;
my $regexp='('.join('|', @{$config{wiki_file_prune_regexps}}).')';
$file =~ m/$regexp/;
} #}}}
sub gettext { #{{{
# Only use gettext in the rare cases it's needed.
if (exists $ENV{LANG} || exists $ENV{LC_ALL} || exists $ENV{LC_MESSAGES}) {
if (! $gettext_obj) {
$gettext_obj=eval q{
use Locale::gettext q{textdomain};
Locale::gettext->domain('ikiwiki')
};
if ($@) {
print STDERR "$@";
$gettext_obj=undef;
return shift;
}
}
return $gettext_obj->get(shift);
}
else {
return shift;
}
} #}}}
sub pagespec_merge ($$) { #{{{
my $a=shift;
my $b=shift;
return $a if $a eq $b;
# Support for old-style GlobLists.
if (is_globlist($a)) {
$a=globlist_to_pagespec($a);
}
if (is_globlist($b)) {
$b=globlist_to_pagespec($b);
}
return "($a) or ($b)";
} #}}}
sub pagespec_translate ($) { #{{{
# This assumes that $page is in scope in the function
# that evalulates the translated pagespec code.
my $spec=shift;
# Support for old-style GlobLists.
if (is_globlist($spec)) {
$spec=globlist_to_pagespec($spec);
}
# Convert spec to perl code.
my $code="";
while ($spec=~m/\s*(\!|\(|\)|\w+\([^\)]+\)|[^\s()]+)\s*/ig) {
my $word=$1;
if (lc $word eq "and") {
$code.=" &&";
}
elsif (lc $word eq "or") {
$code.=" ||";
}
elsif ($word eq "(" || $word eq ")" || $word eq "!") {
$code.=" ".$word;
}
elsif ($word =~ /^(link|backlink|created_before|created_after|creation_month|creation_year|creation_day)\((.+)\)$/) {
$code.=" match_$1(\$page, ".safequote($2).")";
}
else {
$code.=" match_glob(\$page, ".safequote($word).")";
}
}
return $code;
} #}}}
sub pagespec_match ($$) { #{{{
my $page=shift;
my $spec=shift;
return eval pagespec_translate($spec);
} #}}}
sub match_glob ($$) { #{{{
my $page=shift;
my $glob=shift;
# turn glob into safe regexp
$glob=quotemeta($glob);
$glob=~s/\\\*/.*/g;
$glob=~s/\\\?/./g;
return $page=~/^$glob$/i;
} #}}}
sub match_link ($$) { #{{{
my $page=shift;
my $link=lc(shift);
my $links = $links{$page} or return undef;
foreach my $p (@$links) {
return 1 if lc $p eq $link;
}
return 0;
} #}}}
sub match_backlink ($$) { #{{{
match_link(pop, pop);
} #}}}
sub match_created_before ($$) { #{{{
my $page=shift;
my $testpage=shift;
if (exists $pagectime{$testpage}) {
return $pagectime{$page} < $pagectime{$testpage};
}
else {
return 0;
}
} #}}}
sub match_created_after ($$) { #{{{
my $page=shift;
my $testpage=shift;
if (exists $pagectime{$testpage}) {
return $pagectime{$page} > $pagectime{$testpage};
}
else {
return 0;
}
} #}}}
sub match_creation_day ($$) { #{{{
return ((gmtime($pagectime{shift()}))[3] == shift);
} #}}}
sub match_creation_month ($$) { #{{{
return ((gmtime($pagectime{shift()}))[4] + 1 == shift);
} #}}}
sub match_creation_year ($$) { #{{{
return ((gmtime($pagectime{shift()}))[5] + 1900 == shift);
} #}}}
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