IkiWiki/Plugin/inline.pm

   1 #!/usr/bin/perl
   2 # Page inlining and blogging.
   3 package IkiWiki::Plugin::inline;
   4
   5 use warnings;
   6 use strict;
   7 use Encode;
   8 use IkiWiki 2.00;
   9 use URI;
  10
  11 my %knownfeeds;
  12 my %page_numfeeds;
  13 my @inline;
  14 my $nested=0;
  15
  16 sub import { #{{{
  17         hook(type => "getopt", id => "inline", call => \&getopt);
  18         hook(type => "getsetup", id => "inline", call => \&getsetup);
  19         hook(type => "checkconfig", id => "inline", call => \&checkconfig);
  20         hook(type => "sessioncgi", id => "inline", call => \&sessioncgi);
  21         hook(type => "preprocess", id => "inline",
  22                 call => \&IkiWiki::preprocess_inline);
  23         hook(type => "pagetemplate", id => "inline",
  24                 call => \&IkiWiki::pagetemplate_inline);
  25         hook(type => "format", id => "inline", call => \&format);
  26         # Hook to change to do pinging since it's called late.
  27         # This ensures each page only pings once and prevents slow
  28         # pings interrupting page builds.
  29         hook(type => "change", id => "inline", call => \&IkiWiki::pingurl);
  30 } # }}}
  31
  32 sub getopt () { #{{{
  33         eval q{use Getopt::Long};
  34         error($@) if $@;
  35         Getopt::Long::Configure('pass_through');
  36         GetOptions(
  37                 "rss!" => \$config{rss},
  38                 "atom!" => \$config{atom},
  39                 "allowrss!" => \$config{allowrss},
  40                 "allowatom!" => \$config{allowatom},
  41                 "pingurl=s" => sub {
  42                         push @{$config{pingurl}}, $_[1];
  43                 },
  44         );
  45 } #}}}
  46
  47 sub getsetup () { #{{{
  48         return
  49                 plugin => {
  50                         safe => 1,
  51                         rebuild => undef,
  52                 },
  53                 rss => {
  54                         type => "boolean",
  55                         example => 0,
  56                         description => "enable rss feeds by default?",
  57                         safe => 1,
  58                         rebuild => 1,
  59                 },
  60                 atom => {
  61                         type => "boolean",
  62                         example => 0,
  63                         description => "enable atom feeds by default?",
  64                         safe => 1,
  65                         rebuild => 1,
  66                 },
  67                 allowrss => {
  68                         type => "boolean",
  69                         example => 0,
  70                         description => "allow rss feeds to be used?",
  71                         safe => 1,
  72                         rebuild => 1,
  73                 },
  74                 allowatom => {
  75                         type => "boolean",
  76                         example => 0,
  77                         description => "allow atom feeds to be used?",
  78                         safe => 1,
  79                         rebuild => 1,
  80                 },
  81                 pingurl => {
  82                         type => "string",
  83                         example => "http://rpc.technorati.com/rpc/ping",
  84                         description => "urls to ping (using XML-RPC) on feed update",
  85                         safe => 1,
  86                         rebuild => 0,
  87                 },
  88 } #}}}
  89
  90 sub checkconfig () { #{{{
  91         if (($config{rss} || $config{atom}) && ! length $config{url}) {
  92                 error(gettext("Must specify url to wiki with --url when using --rss or --atom"));
  93         }
  94         if ($config{rss}) {
  95                 push @{$config{wiki_file_prune_regexps}}, qr/\.rss$/;
  96         }
  97         if ($config{atom}) {
  98                 push @{$config{wiki_file_prune_regexps}}, qr/\.atom$/;
  99         }
 100         if (! exists $config{pingurl}) {
 101                 $config{pingurl}=[];
 102         }
 103 } #}}}
 104
 105 sub format (@) { #{{{
 106         my %params=@_;
 107
 108         # Fill in the inline content generated earlier. This is actually an
 109         # optimisation.
 110         $params{content}=~s{<div class="inline" id="([^"]+)"></div>}{
 111                 delete @inline[$1,]
 112         }eg;
 113         return $params{content};
 114 } #}}}
 115
 116 sub sessioncgi ($$) { #{{{
 117         my $q=shift;
 118         my $session=shift;
 119
 120         if ($q->param('do') eq 'blog') {
 121                 my $page=titlepage(decode_utf8($q->param('title')));
 122                 $page=~s/(\/)/"__".ord($1)."__"/eg; # don't create subdirs
 123                 # if the page already exists, munge it to be unique
 124                 my $from=$q->param('from');
 125                 my $add="";
 126                 while (exists $IkiWiki::pagecase{lc($from."/".$page.$add)}) {
 127                         $add=1 unless length $add;
 128                         $add++;
 129                 }
 130                 $q->param('page', $page.$add);
 131                 # now go create the page
 132                 $q->param('do', 'create');
 133                 # make sure the editpage plugin in loaded
 134                 if (IkiWiki->can("cgi_editpage")) {
 135                         IkiWiki::cgi_editpage($q, $session);
 136                 }
 137                 else {
 138                         error(gettext("page editing not allowed"));
 139                 }
 140                 exit;
 141         }
 142 }
 143
 144 # Back to ikiwiki namespace for the rest, this code is very much
 145 # internal to ikiwiki even though it's separated into a plugin.
 146 package IkiWiki;
 147
 148 my %toping;
 149 my %feedlinks;
 150
 151 sub preprocess_inline (@) { #{{{
 152         my %params=@_;
 153
 154         if (! exists $params{pages}) {
 155                 error gettext("missing pages parameter");
 156         }
 157         my $raw=yesno($params{raw});
 158         my $archive=yesno($params{archive});
 159         my $rss=(($config{rss} || $config{allowrss}) && exists $params{rss}) ? yesno($params{rss}) : $config{rss};
 160         my $atom=(($config{atom} || $config{allowatom}) && exists $params{atom}) ? yesno($params{atom}) : $config{atom};
 161         my $quick=exists $params{quick} ? yesno($params{quick}) : 0;
 162         my $feeds=exists $params{feeds} ? yesno($params{feeds}) : !$quick;
 163         my $emptyfeeds=exists $params{emptyfeeds} ? yesno($params{emptyfeeds}) : 1;
 164         my $feedonly=yesno($params{feedonly});
 165         if (! exists $params{show} && ! $archive) {
 166                 $params{show}=10;
 167         }
 168         if (! exists $params{feedshow} && exists $params{show}) {
 169                 $params{feedshow}=$params{show};
 170         }
 171         my $desc;
 172         if (exists $params{description}) {
 173                 $desc = $params{description}
 174         }
 175         else {
 176                 $desc = $config{wikiname};
 177         }
 178         my $actions=yesno($params{actions});
 179         if (exists $params{template}) {
 180                 $params{template}=~s/[^-_a-zA-Z0-9]+//g;
 181         }
 182         else {
 183                 $params{template} = $archive ? "archivepage" : "inlinepage";
 184         }
 185
 186         my @list;
 187         foreach my $page (keys %pagesources) {
 188                 next if $page eq $params{page};
 189                 if (pagespec_match($page, $params{pages}, location => $params{page})) {
 190                         push @list, $page;
 191                 }
 192         }
 193
 194         if (exists $params{sort} && $params{sort} eq 'title') {
 195                 @list=sort { pagetitle(basename($a)) cmp pagetitle(basename($b)) } @list;
 196         }
 197         elsif (exists $params{sort} && $params{sort} eq 'mtime') {
 198                 @list=sort { $pagemtime{$b} <=> $pagemtime{$a} } @list;
 199         }
 200         elsif (! exists $params{sort} || $params{sort} eq 'age') {
 201                 @list=sort { $pagectime{$b} <=> $pagectime{$a} } @list;
 202         }
 203         else {
 204                 error sprintf(gettext("unknown sort type %s"), $params{sort});
 205         }
 206
 207         if (yesno($params{reverse})) {
 208                 @list=reverse(@list);
 209         }
 210
 211         if (exists $params{skip}) {
 212                 @list=@list[$params{skip} .. scalar @list - 1];
 213         }
 214
 215         my @feedlist;
 216         if ($feeds) {
 217                 if (exists $params{feedshow} &&
 218                     $params{feedshow} && @list > $params{feedshow}) {
 219                         @feedlist=@list[0..$params{feedshow} - 1];
 220                 }
 221                 else {
 222                         @feedlist=@list;
 223                 }
 224         }
 225
 226         if ($params{show} && @list > $params{show}) {
 227                 @list=@list[0..$params{show} - 1];
 228         }
 229
 230         add_depends($params{page}, $params{pages});
 231         # Explicitly add all currently displayed pages as dependencies, so
 232         # that if they are removed or otherwise changed, the inline will be
 233         # sure to be updated.
 234         add_depends($params{page}, join(" or ", $#list >= $#feedlist ? @list : @feedlist));
 235
 236         if ($feeds && exists $params{feedpages}) {
 237                 @feedlist=grep { pagespec_match($_, $params{feedpages}, location => $params{page}) } @feedlist;
 238         }
 239
 240         my ($feedbase, $feednum);
 241         if ($feeds) {
 242                 # Ensure that multiple feeds on a page go to unique files.
 243
 244                 # Feedfile can lead to conflicts if usedirs is not enabled,
 245                 # so avoid supporting it in that case.
 246                 delete $params{feedfile} if ! $config{usedirs};
 247                 # Tight limits on legal feedfiles, to avoid security issues
 248                 # and conflicts.
 249                 if (defined $params{feedfile}) {
 250                         if ($params{feedfile} =~ /\// ||
 251                             $params{feedfile} !~ /$config{wiki_file_regexp}/) {
 252                                 error("illegal feedfile");
 253                         }
 254                         $params{feedfile}=possibly_foolish_untaint($params{feedfile});
 255                 }
 256                 $feedbase=targetpage($params{destpage}, "", $params{feedfile});
 257
 258                 my $feedid=join("\0", $feedbase, map { $_."\0".$params{$_} } sort keys %params);
 259                 if (exists $knownfeeds{$feedid}) {
 260                         $feednum=$knownfeeds{$feedid};
 261                 }
 262                 else {
 263                         if (exists $page_numfeeds{$params{destpage}}{$feedbase}) {
 264                                 if ($feeds) {
 265                                         $feednum=$knownfeeds{$feedid}=++$page_numfeeds{$params{destpage}}{$feedbase};
 266                                 }
 267                         }
 268                         else {
 269                                 $feednum=$knownfeeds{$feedid}="";
 270                                 if ($feeds) {
 271                                         $page_numfeeds{$params{destpage}}{$feedbase}=1;
 272                                 }
 273                         }
 274                 }
 275         }
 276
 277         my $rssurl=basename($feedbase."rss".$feednum) if $feeds && $rss;
 278         my $atomurl=basename($feedbase."atom".$feednum) if $feeds && $atom;
 279
 280         my $ret="";
 281
 282         if (length $config{cgiurl} && ! $params{preview} && (exists $params{rootpage} ||
 283             (exists $params{postform} && yesno($params{postform}))) &&
 284             IkiWiki->can("cgi_editpage")) {
 285                 # Add a blog post form, with feed buttons.
 286                 my $formtemplate=template("blogpost.tmpl", blind_cache => 1);
 287                 $formtemplate->param(cgiurl => $config{cgiurl});
 288                 my $rootpage;
 289                 if (exists $params{rootpage}) {
 290                         $rootpage=bestlink($params{page}, $params{rootpage});
 291                         if (!length $rootpage) {
 292                                 $rootpage=$params{rootpage};
 293                         }
 294                 }
 295                 else {
 296                         $rootpage=$params{page};
 297                 }
 298                 $formtemplate->param(rootpage => $rootpage);
 299                 $formtemplate->param(rssurl => $rssurl) if $feeds && $rss;
 300                 $formtemplate->param(atomurl => $atomurl) if $feeds && $atom;
 301                 if (exists $params{postformtext}) {
 302                         $formtemplate->param(postformtext =>
 303                                 $params{postformtext});
 304                 }
 305                 else {
 306                         $formtemplate->param(postformtext =>
 307                                 gettext("Add a new post titled:"));
 308                 }
 309                 $ret.=$formtemplate->output;
 310
 311                 # The post form includes the feed buttons, so
 312                 # emptyfeeds cannot be hidden.
 313                 $emptyfeeds=1;
 314         }
 315         elsif ($feeds && !$params{preview} && ($emptyfeeds || @feedlist)) {
 316                 # Add feed buttons.
 317                 my $linktemplate=template("feedlink.tmpl", blind_cache => 1);
 318                 $linktemplate->param(rssurl => $rssurl) if $rss;
 319                 $linktemplate->param(atomurl => $atomurl) if $atom;
 320                 $ret.=$linktemplate->output;
 321         }
 322
 323         if (! $feedonly) {
 324                 require HTML::Template;
 325                 my @params=IkiWiki::template_params($params{template}.".tmpl", blind_cache => 1);
 326                 if (! @params) {
 327                         error sprintf(gettext("nonexistant template %s"), $params{template});
 328                 }
 329                 my $template=HTML::Template->new(@params) unless $raw;
 330
 331                 foreach my $page (@list) {
 332                         my $file = $pagesources{$page};
 333                         my $type = pagetype($file);
 334                         if (! $raw || ($raw && ! defined $type)) {
 335                                 unless ($archive && $quick) {
 336                                         # Get the content before populating the
 337                                         # template, since getting the content uses
 338                                         # the same template if inlines are nested.
 339                                         my $content=get_inline_content($page, $params{destpage});
 340                                         $template->param(content => $content);
 341                                 }
 342                                 $template->param(pageurl => urlto(bestlink($params{page}, $page), $params{destpage}));
 343                                 $template->param(title => pagetitle(basename($page)));
 344                                 $template->param(ctime => displaytime($pagectime{$page}, $params{timeformat}));
 345                                 $template->param(mtime => displaytime($pagemtime{$page}, $params{timeformat}));
 346                                 $template->param(first => 1) if $page eq $list[0];
 347                                 $template->param(last => 1) if $page eq $list[$#list];
 348
 349                                 if ($actions) {
 350                                         my $file = $pagesources{$page};
 351                                         my $type = pagetype($file);
 352                                         if ($config{discussion}) {
 353                                                 my $discussionlink=gettext("discussion");
 354                                                 if ($page !~ /.*\/\Q$discussionlink\E$/ &&
 355                                                     (length $config{cgiurl} ||
 356                                                      exists $links{$page."/".$discussionlink})) {
 357                                                         $template->param(have_actions => 1);
 358                                                         $template->param(discussionlink =>
 359                                                                 htmllink($page,
 360                                                                         $params{destpage},
 361                                                                         gettext("Discussion"),
 362                                                                         noimageinline => 1,
 363                                                                         forcesubpage => 1));
 364                                                 }
 365                                         }
 366                                         if (length $config{cgiurl} && defined $type) {
 367                                                 $template->param(have_actions => 1);
 368                                                 $template->param(editurl => cgiurl(do => "edit", page => $page));
 369                                         }
 370                                 }
 371
 372                                 run_hooks(pagetemplate => sub {
 373                                         shift->(page => $page, destpage => $params{destpage},
 374                                                 template => $template,);
 375                                 });
 376
 377                                 $ret.=$template->output;
 378                                 $template->clear_params;
 379                         }
 380                         else {
 381                                 if (defined $type) {
 382                                         $ret.="\n".
 383                                               linkify($page, $params{destpage},
 384                                               preprocess($page, $params{destpage},
 385                                               filter($page, $params{destpage},
 386                                               readfile(srcfile($file)))));
 387                                 }
 388                         }
 389                 }
 390         }
 391
 392         if ($feeds && ($emptyfeeds || @feedlist)) {
 393                 if ($rss) {
 394                         my $rssp=$feedbase."rss".$feednum;
 395                         will_render($params{destpage}, $rssp);
 396                         if (! $params{preview}) {
 397                                 writefile($rssp, $config{destdir},
 398                                         genfeed("rss",
 399                                                 $config{url}."/".$rssp, $desc, $params{guid}, $params{destpage}, @feedlist));
 400                                 $toping{$params{destpage}}=1 unless $config{rebuild};
 401                                 $feedlinks{$params{destpage}}.=qq{<link rel="alternate" type="application/rss+xml" title="$desc (RSS)" href="$rssurl" />};
 402                         }
 403                 }
 404                 if ($atom) {
 405                         my $atomp=$feedbase."atom".$feednum;
 406                         will_render($params{destpage}, $atomp);
 407                         if (! $params{preview}) {
 408                                 writefile($atomp, $config{destdir},
 409                                         genfeed("atom", $config{url}."/".$atomp, $desc, $params{guid}, $params{destpage}, @feedlist));
 410                                 $toping{$params{destpage}}=1 unless $config{rebuild};
 411                                 $feedlinks{$params{destpage}}.=qq{<link rel="alternate" type="application/atom+xml" title="$desc (Atom)" href="$atomurl" />};
 412                         }
 413                 }
 414         }
 415
 416         return $ret if $raw || $nested;
 417         push @inline, $ret;
 418         return "<div class=\"inline\" id=\"$#inline\"></div>\n\n";
 419 } #}}}
 420
 421 sub pagetemplate_inline (@) { #{{{
 422         my %params=@_;
 423         my $page=$params{page};
 424         my $template=$params{template};
 425
 426         $template->param(feedlinks => $feedlinks{$page})
 427                 if exists $feedlinks{$page} && $template->query(name => "feedlinks");
 428 } #}}}
 429
 430 sub get_inline_content ($$) { #{{{
 431         my $page=shift;
 432         my $destpage=shift;
 433
 434         my $file=$pagesources{$page};
 435         my $type=pagetype($file);
 436         if (defined $type) {
 437                 $nested++;
 438                 my $ret=htmlize($page, $destpage, $type,
 439                        linkify($page, $destpage,
 440                        preprocess($page, $destpage,
 441                        filter($page, $destpage,
 442                        readfile(srcfile($file))))));
 443                 $nested--;
 444                 return $ret;
 445         }
 446         else {
 447                 return "";
 448         }
 449 } #}}}
 450
 451 sub date_822 ($) { #{{{
 452         my $time=shift;
 453
 454         my $lc_time=POSIX::setlocale(&POSIX::LC_TIME);
 455         POSIX::setlocale(&POSIX::LC_TIME, "C");
 456         my $ret=POSIX::strftime("%a, %d %b %Y %H:%M:%S %z", localtime($time));
 457         POSIX::setlocale(&POSIX::LC_TIME, $lc_time);
 458         return $ret;
 459 } #}}}
 460
 461 sub date_3339 ($) { #{{{
 462         my $time=shift;
 463
 464         my $lc_time=POSIX::setlocale(&POSIX::LC_TIME);
 465         POSIX::setlocale(&POSIX::LC_TIME, "C");
 466         my $ret=POSIX::strftime("%Y-%m-%dT%H:%M:%SZ", gmtime($time));
 467         POSIX::setlocale(&POSIX::LC_TIME, $lc_time);
 468         return $ret;
 469 } #}}}
 470
 471 sub absolute_urls ($$) { #{{{
 472         # sucky sub because rss sucks
 473         my $content=shift;
 474         my $baseurl=shift;
 475
 476         my $url=$baseurl;
 477         $url=~s/[^\/]+$//;
 478
 479         # what is the non path part of the url?
 480         my $top_uri = URI->new($url);
 481         $top_uri->path_query(""); # reset the path
 482         my $urltop = $top_uri->as_string;
 483
 484         $content=~s/(<a(?:\s+(?:class|id)\s*="?\w+"?)?)\s+href=\s*"(#[^"]+)"/$1 href="$baseurl$2"/mig;
 485         # relative to another wiki page
 486         $content=~s/(<a(?:\s+(?:class|id)\s*="?\w+"?)?)\s+href=\s*"(?!\w+:)([^\/][^"]*)"/$1 href="$url$2"/mig;
 487         $content=~s/(<img(?:\s+(?:class|id|width|height)\s*="?\w+"?)*)\s+src=\s*"(?!\w+:)([^\/][^"]*)"/$1 src="$url$2"/mig;
 488         # relative to the top of the site
 489         $content=~s/(<a(?:\s+(?:class|id)\s*="?\w+"?)?)\s+href=\s*"(?!\w+:)(\/[^"]*)"/$1 href="$urltop$2"/mig;
 490         $content=~s/(<img(?:\s+(?:class|id|width|height)\s*="?\w+"?)*)\s+src=\s*"(?!\w+:)(\/[^"]*)"/$1 src="$urltop$2"/mig;
 491         return $content;
 492 } #}}}
 493
 494 sub genfeed ($$$$$@) { #{{{
 495         my $feedtype=shift;
 496         my $feedurl=shift;
 497         my $feeddesc=shift;
 498         my $guid=shift;
 499         my $page=shift;
 500         my @pages=@_;
 501
 502         my $url=URI->new(encode_utf8(urlto($page,"",1)));
 503
 504         my $itemtemplate=template($feedtype."item.tmpl", blind_cache => 1);
 505         my $content="";
 506         my $lasttime = 0;
 507         foreach my $p (@pages) {
 508                 my $u=URI->new(encode_utf8(urlto($p, "", 1)));
 509                 my $pcontent = absolute_urls(get_inline_content($p, $page), $url);
 510
 511                 $itemtemplate->param(
 512                         title => pagetitle(basename($p)),
 513                         url => $u,
 514                         permalink => $u,
 515                         cdate_822 => date_822($pagectime{$p}),
 516                         mdate_822 => date_822($pagemtime{$p}),
 517                         cdate_3339 => date_3339($pagectime{$p}),
 518                         mdate_3339 => date_3339($pagemtime{$p}),
 519                 );
 520
 521                 if (exists $pagestate{$p} &&
 522                     exists $pagestate{$p}{meta}{guid}) {
 523                         $itemtemplate->param(guid => $pagestate{$p}{meta}{guid});
 524                 }
 525
 526                 if ($itemtemplate->query(name => "enclosure")) {
 527                         my $file=$pagesources{$p};
 528                         my $type=pagetype($file);
 529                         if (defined $type) {
 530                                 $itemtemplate->param(content => $pcontent);
 531                         }
 532                         else {
 533                                 my $size=(srcfile_stat($file))[8];
 534                                 my $mime="unknown";
 535                                 eval q{use File::MimeInfo};
 536                                 if (! $@) {
 537                                         $mime = mimetype($file);
 538                                 }
 539                                 $itemtemplate->param(
 540                                         enclosure => $u,
 541                                         type => $mime,
 542                                         length => $size,
 543                                 );
 544                         }
 545                 }
 546                 else {
 547                         $itemtemplate->param(content => $pcontent);
 548                 }
 549
 550                 run_hooks(pagetemplate => sub {
 551                         shift->(page => $p, destpage => $page,
 552                                 template => $itemtemplate);
 553                 });
 554
 555                 $content.=$itemtemplate->output;
 556                 $itemtemplate->clear_params;
 557
 558                 $lasttime = $pagemtime{$p} if $pagemtime{$p} > $lasttime;
 559         }
 560
 561         my $template=template($feedtype."page.tmpl", blind_cache => 1);
 562         $template->param(
 563                 title => $page ne "index" ? pagetitle($page) : $config{wikiname},
 564                 wikiname => $config{wikiname},
 565                 pageurl => $url,
 566                 content => $content,
 567                 feeddesc => $feeddesc,
 568                 guid => $guid,
 569                 feeddate => date_3339($lasttime),
 570                 feedurl => $feedurl,
 571                 version => $IkiWiki::version,
 572         );
 573         run_hooks(pagetemplate => sub {
 574                 shift->(page => $page, destpage => $page,
 575                         template => $template);
 576         });
 577
 578         return $template->output;
 579 } #}}}
 580
 581 sub pingurl (@) { #{{{
 582         return unless @{$config{pingurl}} && %toping;
 583
 584         eval q{require RPC::XML::Client};
 585         if ($@) {
 586                 debug(gettext("RPC::XML::Client not found, not pinging"));
 587                 return;
 588         }
 589
 590         # daemonize here so slow pings don't slow down wiki updates
 591         defined(my $pid = fork) or error("Can't fork: $!");
 592         return if $pid;
 593         chdir '/';
 594         POSIX::setsid() or error("Can't start a new session: $!");
 595         open STDIN, '/dev/null';
 596         open STDOUT, '>/dev/null';
 597         open STDERR, '>&STDOUT' or error("Can't dup stdout: $!");
 598
 599         # Don't need to keep a lock on the wiki as a daemon.
 600         IkiWiki::unlockwiki();
 601
 602         foreach my $page (keys %toping) {
 603                 my $title=pagetitle(basename($page), 0);
 604                 my $url=urlto($page, "", 1);
 605                 foreach my $pingurl (@{$config{pingurl}}) {
 606                         debug("Pinging $pingurl for $page");
 607                         eval {
 608                                 my $client = RPC::XML::Client->new($pingurl);
 609                                 my $req = RPC::XML::request->new('weblogUpdates.ping',
 610                                         $title, $url);
 611                                 my $res = $client->send_request($req);
 612                                 if (! ref $res) {
 613                                         error("Did not receive response to ping");
 614                                 }
 615                                 my $r=$res->value;
 616                                 if (! exists $r->{flerror} || $r->{flerror}) {
 617                                         error("Ping rejected: ".(exists $r->{message} ? $r->{message} : "[unknown reason]"));
 618                                 }
 619                         };
 620                         if ($@) {
 621                                 error "Ping failed: $@";
 622                         }
 623                 }
 624         }
 625
 626         exit 0; # daemon done
 627 } #}}}
 628
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