+}
+
+
+my $wikilock;
+
+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)) { # LOCK_EX
+ error("failed to get lock");
+ }
+ return 1;
+}
+
+sub unlockwiki () {
+ POSIX::close($ENV{IKIWIKI_CGILOCK_FD}) if exists $ENV{IKIWIKI_CGILOCK_FD};
+ return close($wikilock) if $wikilock;
+ return;
+}
+
+my $commitlock;
+
+sub commit_hook_enabled () {
+ open($commitlock, '+>', "$config{wikistatedir}/commitlock") ||
+ error("cannot write to $config{wikistatedir}/commitlock: $!");
+ if (! flock($commitlock, 1 | 4)) { # LOCK_SH | LOCK_NB to test
+ close($commitlock) || error("failed closing commitlock: $!");
+ return 0;
+ }
+ close($commitlock) || error("failed closing commitlock: $!");
+ return 1;
+}
+
+sub disable_commit_hook () {
+ open($commitlock, '>', "$config{wikistatedir}/commitlock") ||
+ error("cannot write to $config{wikistatedir}/commitlock: $!");
+ if (! flock($commitlock, 2)) { # LOCK_EX
+ error("failed to get commit lock");
+ }
+ return 1;
+}
+
+sub enable_commit_hook () {
+ return close($commitlock) if $commitlock;
+ return;
+}
+
+sub loadindex () {
+ %oldrenderedfiles=%pagectime=();
+ my $rebuild=$config{rebuild};
+ if (! $rebuild) {
+ %pagesources=%pagemtime=%oldlinks=%links=%depends=
+ %destsources=%renderedfiles=%pagecase=%pagestate=
+ %depends_simple=%typedlinks=%oldtypedlinks=();
+ }
+ my $in;
+ if (! open ($in, "<", "$config{wikistatedir}/indexdb")) {
+ if (-e "$config{wikistatedir}/index") {
+ system("ikiwiki-transition", "indexdb", $config{srcdir});
+ open ($in, "<", "$config{wikistatedir}/indexdb") || return;
+ }
+ else {
+ # gettime on first build
+ $config{gettime}=1 unless defined $config{gettime};
+ return;
+ }
+ }
+
+ my $index=Storable::fd_retrieve($in);
+ if (! defined $index) {
+ return 0;
+ }
+
+ my $pages;
+ if (exists $index->{version} && ! ref $index->{version}) {
+ $pages=$index->{page};
+ %wikistate=%{$index->{state}};
+ # Handle plugins that got disabled by loading a new setup.
+ if (exists $config{setupfile}) {
+ require IkiWiki::Setup;
+ IkiWiki::Setup::disabled_plugins(
+ grep { ! $loaded_plugins{$_} } keys %wikistate);
+ }
+ }
+ else {
+ $pages=$index;
+ %wikistate=();
+ }
+
+ foreach my $src (keys %$pages) {
+ my $d=$pages->{$src};
+ my $page;
+ if (exists $d->{page} && ! $rebuild) {
+ $page=$d->{page};
+ }
+ else {
+ $page=pagename($src);
+ }
+ $pagectime{$page}=$d->{ctime};
+ $pagesources{$page}=$src;
+ if (! $rebuild) {
+ $pagemtime{$page}=$d->{mtime};
+ $renderedfiles{$page}=$d->{dest};
+ if (exists $d->{links} && ref $d->{links}) {
+ $links{$page}=$d->{links};
+ $oldlinks{$page}=[@{$d->{links}}];
+ }
+ if (ref $d->{depends_simple} eq 'ARRAY') {
+ # old format
+ $depends_simple{$page}={
+ map { $_ => 1 } @{$d->{depends_simple}}
+ };
+ }
+ elsif (exists $d->{depends_simple}) {
+ $depends_simple{$page}=$d->{depends_simple};
+ }
+ if (exists $d->{dependslist}) {
+ # old format
+ $depends{$page}={
+ map { $_ => $DEPEND_CONTENT }
+ @{$d->{dependslist}}
+ };
+ }
+ elsif (exists $d->{depends} && ! ref $d->{depends}) {
+ # old format
+ $depends{$page}={$d->{depends} => $DEPEND_CONTENT };
+ }
+ elsif (exists $d->{depends}) {
+ $depends{$page}=$d->{depends};
+ }
+ if (exists $d->{state}) {
+ $pagestate{$page}=$d->{state};
+ }
+ if (exists $d->{typedlinks}) {
+ $typedlinks{$page}=$d->{typedlinks};
+
+ while (my ($type, $links) = each %{$typedlinks{$page}}) {
+ next unless %$links;
+ $oldtypedlinks{$page}{$type} = {%$links};
+ }
+ }
+ }
+ $oldrenderedfiles{$page}=[@{$d->{dest}}];
+ }
+ foreach my $page (keys %pagesources) {
+ $pagecase{lc $page}=$page;
+ }
+ foreach my $page (keys %renderedfiles) {
+ $destsources{$_}=$page foreach @{$renderedfiles{$page}};
+ }
+ $lastrev=$index->{lastrev};
+ @underlayfiles=@{$index->{underlayfiles}} if ref $index->{underlayfiles};
+ return close($in);
+}
+
+sub saveindex () {
+ run_hooks(savestate => sub { shift->() });
+
+ my @plugins=keys %loaded_plugins;
+
+ if (! -d $config{wikistatedir}) {
+ mkdir($config{wikistatedir});
+ }
+ my $newfile="$config{wikistatedir}/indexdb.new";
+ my $cleanup = sub { unlink($newfile) };
+ open (my $out, '>', $newfile) || error("cannot write to $newfile: $!", $cleanup);
+
+ my %index;
+ foreach my $page (keys %pagemtime) {
+ next unless $pagemtime{$page};
+ my $src=$pagesources{$page};
+
+ $index{page}{$src}={
+ page => $page,
+ ctime => $pagectime{$page},
+ mtime => $pagemtime{$page},
+ dest => $renderedfiles{$page},
+ links => $links{$page},
+ };
+
+ if (exists $depends{$page}) {
+ $index{page}{$src}{depends} = $depends{$page};
+ }
+
+ if (exists $depends_simple{$page}) {
+ $index{page}{$src}{depends_simple} = $depends_simple{$page};
+ }
+
+ if (exists $typedlinks{$page} && %{$typedlinks{$page}}) {
+ $index{page}{$src}{typedlinks} = $typedlinks{$page};
+ }
+
+ if (exists $pagestate{$page}) {
+ $index{page}{$src}{state}=$pagestate{$page};
+ }
+ }
+
+ $index{state}={};
+ foreach my $id (@plugins) {
+ $index{state}{$id}={}; # used to detect disabled plugins
+ foreach my $key (keys %{$wikistate{$id}}) {
+ $index{state}{$id}{$key}=$wikistate{$id}{$key};
+ }
+ }
+
+ $index{lastrev}=$lastrev;
+ $index{underlayfiles}=\@underlayfiles;
+
+ $index{version}="3";
+ my $ret=Storable::nstore_fd(\%index, $out);
+ return if ! defined $ret || ! $ret;
+ close $out || error("failed saving to $newfile: $!", $cleanup);
+ rename($newfile, "$config{wikistatedir}/indexdb") ||
+ error("failed renaming $newfile to $config{wikistatedir}/indexdb", $cleanup);
+
+ return 1;
+}
+
+sub template_file ($) {
+ my $name=shift;
+
+ my $tpage=($name =~ s/^\///) ? $name : "templates/$name";
+ my $template;
+ if ($name !~ /\.tmpl$/ && exists $pagesources{$tpage}) {
+ $template=srcfile($pagesources{$tpage}, 1);
+ $name.=".tmpl";
+ }
+ else {
+ $template=srcfile($tpage, 1);
+ }
+
+ if (defined $template) {
+ return $template, $tpage, 1 if wantarray;
+ return $template;
+ }
+ else {
+ $name=~s:/::; # avoid path traversal
+ foreach my $dir ($config{templatedir},
+ "$installdir/share/ikiwiki/templates") {
+ if (-e "$dir/$name") {
+ $template="$dir/$name";
+ last;
+ }
+ }
+ if (defined $template) {
+ return $template, $tpage if wantarray;
+ return $template;
+ }
+ }
+
+ return;
+}
+
+sub template_depends ($$;@) {
+ my $name=shift;
+ my $page=shift;
+
+ my ($filename, $tpage, $untrusted)=template_file($name);
+ if (! defined $filename) {
+ error(sprintf(gettext("template %s not found"), $name))
+ }
+
+ if (defined $page && defined $tpage) {
+ add_depends($page, $tpage);
+ }
+
+ my @opts=(
+ filter => sub {
+ my $text_ref = shift;
+ ${$text_ref} = decode_utf8(${$text_ref});
+ run_hooks(readtemplate => sub {
+ ${$text_ref} = shift->(
+ id => $name,
+ page => $tpage,
+ content => ${$text_ref},
+ untrusted => $untrusted,
+ );
+ });
+ },
+ loop_context_vars => 1,
+ die_on_bad_params => 0,
+ parent_global_vars => 1,
+ filename => $filename,
+ @_,
+ ($untrusted ? (no_includes => 1) : ()),
+ );
+ return @opts if wantarray;
+
+ require HTML::Template;
+ return HTML::Template->new(@opts);
+}
+
+sub template ($;@) {
+ template_depends(shift, undef, @_);
+}
+
+sub templateactions ($$) {
+ my $template=shift;
+ my $page=shift;
+
+ my $have_actions=0;
+ my @actions;
+ run_hooks(pageactions => sub {
+ push @actions, map { { action => $_ } }
+ grep { defined } shift->(page => $page);
+ });
+ $template->param(actions => \@actions);
+
+ if ($config{cgiurl} && exists $hooks{auth}) {
+ $template->param(prefsurl => cgiurl(do => "prefs"));
+ $have_actions=1;
+ }
+
+ if ($have_actions || @actions) {
+ $template->param(have_actions => 1);
+ }
+}
+
+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;
+ return 1;
+}
+
+sub run_hooks ($$) {
+ # Calls the given sub for each hook of the given type,
+ # passing it the hook function to call.
+ my $type=shift;
+ my $sub=shift;
+
+ if (exists $hooks{$type}) {
+ my (@first, @middle, @last);
+ foreach my $id (keys %{$hooks{$type}}) {
+ if ($hooks{$type}{$id}{first}) {
+ push @first, $id;
+ }
+ elsif ($hooks{$type}{$id}{last}) {
+ push @last, $id;
+ }
+ else {
+ push @middle, $id;
+ }
+ }
+ foreach my $id (@first, @middle, @last) {
+ $sub->($hooks{$type}{$id}{call});
+ }
+ }
+
+ return 1;
+}
+
+sub rcs_update () {
+ $hooks{rcs}{rcs_update}{call}->(@_);
+}
+
+sub rcs_prepedit ($) {
+ $hooks{rcs}{rcs_prepedit}{call}->(@_);
+}
+
+sub rcs_commit (@) {
+ $hooks{rcs}{rcs_commit}{call}->(@_);
+}
+
+sub rcs_commit_staged (@) {
+ $hooks{rcs}{rcs_commit_staged}{call}->(@_);
+}
+
+sub rcs_add ($) {
+ $hooks{rcs}{rcs_add}{call}->(@_);
+}
+
+sub rcs_remove ($) {
+ $hooks{rcs}{rcs_remove}{call}->(@_);
+}
+
+sub rcs_rename ($$) {
+ $hooks{rcs}{rcs_rename}{call}->(@_);
+}
+
+sub rcs_recentchanges ($) {
+ $hooks{rcs}{rcs_recentchanges}{call}->(@_);
+}
+
+sub rcs_diff ($;$) {
+ $hooks{rcs}{rcs_diff}{call}->(@_);
+}
+
+sub rcs_getctime ($) {
+ $hooks{rcs}{rcs_getctime}{call}->(@_);
+}
+
+sub rcs_getmtime ($) {
+ $hooks{rcs}{rcs_getmtime}{call}->(@_);
+}
+
+sub rcs_receive () {
+ $hooks{rcs}{rcs_receive}{call}->();
+}
+
+sub add_depends ($$;$) {
+ my $page=shift;
+ my $pagespec=shift;
+ my $deptype=shift || $DEPEND_CONTENT;
+
+ # Is the pagespec a simple page name?
+ if ($pagespec =~ /$config{wiki_file_regexp}/ &&
+ $pagespec !~ /[\s*?()!]/) {
+ $depends_simple{$page}{lc $pagespec} |= $deptype;
+ return 1;
+ }
+
+ # Add explicit dependencies for influences.
+ my $sub=pagespec_translate($pagespec);
+ return unless defined $sub;
+ foreach my $p (keys %pagesources) {
+ my $r=$sub->($p, location => $page);
+ my $i=$r->influences;
+ my $static=$r->influences_static;
+ foreach my $k (keys %$i) {
+ next unless $r || $static || $k eq $page;
+ $depends_simple{$page}{lc $k} |= $i->{$k};
+ }
+ last if $static;
+ }
+
+ $depends{$page}{$pagespec} |= $deptype;
+ return 1;
+}
+
+sub deptype (@) {
+ my $deptype=0;
+ foreach my $type (@_) {
+ if ($type eq 'presence') {
+ $deptype |= $DEPEND_PRESENCE;
+ }
+ elsif ($type eq 'links') {
+ $deptype |= $DEPEND_LINKS;
+ }
+ elsif ($type eq 'content') {
+ $deptype |= $DEPEND_CONTENT;
+ }
+ }
+ return $deptype;
+}
+
+my $file_prune_regexp;
+sub file_pruned ($) {
+ my $file=shift;
+
+ if (defined $config{include} && length $config{include}) {
+ return 0 if $file =~ m/$config{include}/;
+ }
+
+ if (! defined $file_prune_regexp) {
+ $file_prune_regexp='('.join('|', @{$config{wiki_file_prune_regexps}}).')';
+ $file_prune_regexp=qr/$file_prune_regexp/;
+ }
+ return $file =~ m/$file_prune_regexp/;
+}
+
+sub define_gettext () {
+ # If translation is needed, redefine the gettext function to do it.
+ # Otherwise, it becomes a quick no-op.
+ my $gettext_obj;
+ my $getobj;
+ if ((exists $ENV{LANG} && length $ENV{LANG}) ||
+ (exists $ENV{LC_ALL} && length $ENV{LC_ALL}) ||
+ (exists $ENV{LC_MESSAGES} && length $ENV{LC_MESSAGES})) {
+ $getobj=sub {
+ $gettext_obj=eval q{
+ use Locale::gettext q{textdomain};
+ Locale::gettext->domain('ikiwiki')
+ };
+ };
+ }
+
+ no warnings 'redefine';
+ *gettext=sub {
+ $getobj->() if $getobj;
+ if ($gettext_obj) {
+ $gettext_obj->get(shift);
+ }
+ else {
+ return shift;
+ }
+ };
+ *ngettext=sub {
+ $getobj->() if $getobj;
+ if ($gettext_obj) {
+ $gettext_obj->nget(@_);
+ }
+ else {
+ return ($_[2] == 1 ? $_[0] : $_[1])
+ }
+ };
+}
+
+sub gettext {
+ define_gettext();
+ gettext(@_);
+}
+
+sub ngettext {
+ define_gettext();
+ ngettext(@_);
+}
+
+sub yesno ($) {
+ my $val=shift;
+
+ return (defined $val && (lc($val) eq gettext("yes") || lc($val) eq "yes" || $val eq "1"));
+}
+
+sub inject {
+ # Injects a new function into the symbol table to replace an
+ # exported function.
+ my %params=@_;
+
+ # This is deep ugly perl foo, beware.
+ no strict;
+ no warnings;
+ if (! defined $params{parent}) {
+ $params{parent}='::';
+ $params{old}=\&{$params{name}};
+ $params{name}=~s/.*:://;
+ }
+ my $parent=$params{parent};
+ foreach my $ns (grep /^\w+::/, keys %{$parent}) {
+ $ns = $params{parent} . $ns;
+ inject(%params, parent => $ns) unless $ns eq '::main::';
+ *{$ns . $params{name}} = $params{call}
+ if exists ${$ns}{$params{name}} &&
+ \&{${$ns}{$params{name}}} == $params{old};
+ }
+ use strict;
+ use warnings;
+}
+
+sub add_link ($$;$) {
+ my $page=shift;
+ my $link=shift;
+ my $type=shift;
+
+ push @{$links{$page}}, $link
+ unless grep { $_ eq $link } @{$links{$page}};
+
+ if (defined $type) {
+ $typedlinks{$page}{$type}{$link} = 1;
+ }
+}
+
+sub add_autofile ($$$) {
+ my $file=shift;
+ my $plugin=shift;
+ my $generator=shift;
+
+ $autofiles{$file}{plugin}=$plugin;
+ $autofiles{$file}{generator}=$generator;
+}
+
+sub useragent () {
+ return LWP::UserAgent->new(
+ cookie_jar => $config{cookiejar},
+ env_proxy => 1, # respect proxy env vars
+ agent => $config{useragent},
+ );
+}
+
+sub sortspec_translate ($$) {
+ my $spec = shift;
+ my $reverse = shift;
+
+ my $code = "";
+ my @data;
+ while ($spec =~ m{
+ \s*
+ (-?) # group 1: perhaps negated
+ \s*
+ ( # group 2: a word
+ \w+\([^\)]*\) # command(params)
+ |
+ [^\s]+ # or anything else
+ )
+ \s*
+ }gx) {
+ my $negated = $1;
+ my $word = $2;
+ my $params = undef;
+
+ if ($word =~ m/^(\w+)\((.*)\)$/) {
+ # command with parameters
+ $params = $2;
+ $word = $1;
+ }
+ elsif ($word !~ m/^\w+$/) {
+ error(sprintf(gettext("invalid sort type %s"), $word));
+ }
+
+ if (length $code) {
+ $code .= " || ";
+ }
+
+ if ($negated) {
+ $code .= "-";
+ }
+
+ if (exists $IkiWiki::SortSpec::{"cmp_$word"}) {
+ if (defined $params) {
+ push @data, $params;
+ $code .= "IkiWiki::SortSpec::cmp_$word(\$data[$#data])";
+ }
+ else {
+ $code .= "IkiWiki::SortSpec::cmp_$word(undef)";
+ }
+ }
+ else {
+ error(sprintf(gettext("unknown sort type %s"), $word));
+ }
+ }
+
+ if (! length $code) {
+ # undefined sorting method... sort arbitrarily
+ return sub { 0 };
+ }
+
+ if ($reverse) {
+ $code="-($code)";
+ }
+
+ no warnings;
+ return eval 'sub { '.$code.' }';
+}
+
+sub pagespec_translate ($) {
+ my $spec=shift;