IkiWiki/Plugin/osm.pm

   1 #!/usr/bin/perl
   2 # Copyright 2011 Blars Blarson
   3 # Released under GPL version 2
   4
   5 package IkiWiki::Plugin::osm;
   6 use utf8;
   7 use strict;
   8 use warnings;
   9 use IkiWiki 3.0;
  10
  11 sub import {
  12         add_underlay("osm");
  13         hook(type => "getsetup", id => "osm", call => \&getsetup);
  14         hook(type => "format", id => "osm", call => \&format);
  15         hook(type => "preprocess", id => "osm", call => \&preprocess);
  16         hook(type => "preprocess", id => "waypoint", call => \&process_waypoint);
  17         hook(type => "savestate", id => "waypoint", call => \&savestate);
  18         hook(type => "cgi", id => "osm", call => \&cgi);
  19 }
  20
  21 sub getsetup () {
  22         return
  23                 plugin => {
  24                         safe => 1,
  25                         rebuild => 1,
  26                         section => "special-purpose",
  27                 },
  28                 osm_default_zoom => {
  29                         type => "integer",
  30                         example => "15",
  31                         description => "the default zoom when you click on the map link",
  32                         safe => 1,
  33                         rebuild => 1,
  34                 },
  35                 osm_default_icon => {
  36                         type => "string",
  37                         example => "ikiwiki/images/osm.png",
  38                         description => "the icon shown on links and on the main map",
  39                         safe => 0,
  40                         rebuild => 1,
  41                 },
  42                 osm_alt => {
  43                         type => "string",
  44                         example => "",
  45                         description => "the alt tag of links, defaults to empty",
  46                         safe => 0,
  47                         rebuild => 1,
  48                 },
  49                 osm_format => {
  50                         type => "string",
  51                         example => "KML",
  52                         description => "the output format for waypoints, can be KML, GeoJSON or CSV (one or many, comma-separated)",
  53                         safe => 1,
  54                         rebuild => 1,
  55                 },
  56                 osm_tag_default_icon => {
  57                         type => "string",
  58                         example => "icon.png",
  59                         description => "the icon attached to a tag, displayed on the map for tagged pages",
  60                         safe => 0,
  61                         rebuild => 1,
  62                 },
  63 }
  64
  65 sub preprocess {
  66         my %params=@_;
  67         my $page = $params{'page'};
  68         my $dest = $params{'destpage'};
  69         my $loc = $params{'loc'}; # sanitized below
  70         my $lat = $params{'lat'}; # sanitized below
  71         my $lon = $params{'lon'}; # sanitized below
  72         my $href = $params{'href'};
  73
  74         my $fullscreen = defined($params{'fullscreen'}); # sanitized here
  75         my ($width, $height, $float);
  76         if ($fullscreen) {
  77                 $height = '100%';
  78                 $width = '100%';
  79                 $float = 0;
  80         }
  81         else {
  82                 $height = scrub($params{'height'} || "300px", $page, $dest); # sanitized here
  83                 $width = scrub($params{'width'} || "500px", $page, $dest); # sanitized here
  84                 $float = (defined($params{'right'}) && 'right') || (defined($params{'left'}) && 'left'); # sanitized here
  85         }
  86         my $zoom = scrub($params{'zoom'} // $config{'osm_default_zoom'} // 15, $page, $dest); # sanitized below
  87         my $map;
  88         if ($fullscreen) {
  89                 $map = $params{'map'} || $page;
  90         }
  91         else {
  92                 $map = $params{'map'} || 'map';
  93         }
  94         $map = scrub($map, $page, $dest); # sanitized here
  95         my $name = scrub($params{'name'} || $map, $page, $dest);
  96
  97         if (defined($lon) || defined($lat) || defined($loc)) {
  98                 ($lon, $lat) = scrub_lonlat($loc, $lon, $lat);
  99         }
 100
 101         if ($zoom !~ /^\d\d?$/ || $zoom < 2 || $zoom > 18) {
 102                 error("Bad zoom");
 103         }
 104
 105         if (! defined $href || ! length $href) {
 106                 $href=IkiWiki::cgiurl(
 107                         do => "osm",
 108                         map => $map,
 109                 );
 110         }
 111
 112         $pagestate{$page}{'osm'}{$map}{'displays'}{$name} = {
 113                 height => $height,
 114                 width => $width,
 115                 float => $float,
 116                 zoom => $zoom,
 117                 fullscreen => $fullscreen,
 118                 editable => defined($params{'editable'}),
 119                 lat => $lat,
 120                 lon => $lon,
 121                 href => $href,
 122         };
 123         return "<div id=\"mapdiv-$name\"></div>";
 124 }
 125
 126 sub process_waypoint {
 127         my %params=@_;
 128         my $loc = $params{'loc'}; # sanitized below
 129         my $lat = $params{'lat'}; # sanitized below
 130         my $lon = $params{'lon'}; # sanitized below
 131         my $page = $params{'page'}; # not sanitized?
 132         my $dest = $params{'destpage'}; # not sanitized?
 133         my $hidden = defined($params{'hidden'}); # sanitized here
 134         my ($p) = $page =~ /(?:^|\/)([^\/]+)\/?$/; # shorter page name
 135         my $name = scrub($params{'name'} || $p, $page, $dest); # sanitized here
 136         my $desc = scrub($params{'desc'} || '', $page, $dest); # sanitized here
 137         my $zoom = scrub($params{'zoom'} // $config{'osm_default_zoom'} // 15, $page, $dest); # sanitized below
 138         my $icon = $config{'osm_default_icon'} || "ikiwiki/images/osm.png"; # sanitized: we trust $config
 139         my $map = scrub($params{'map'} || 'map', $page, $dest); # sanitized here
 140         my $alt = $config{'osm_alt'} ? "alt=\"$config{'osm_alt'}\"" : ''; # sanitized: we trust $config
 141         if ($zoom !~ /^\d\d?$/ || $zoom < 2 || $zoom > 18) {
 142                 error("Bad zoom");
 143         }
 144
 145         ($lon, $lat) = scrub_lonlat($loc, $lon, $lat);
 146         if (!defined($lat) || !defined($lon)) {
 147                 error("Must specify lat and lon");
 148         }
 149
 150         my $tag = $params{'tag'};
 151         foreach my $t (keys %{$typedlinks{$page}{'tag'}}) {
 152                 if ($icon = get_tag_icon($t)) {
 153                         $tag = $t;
 154                         last;
 155                 }
 156                 $t =~ s!/$config{'tagbase'}/!!;
 157                 if ($icon = get_tag_icon($t)) {
 158                         $tag = $t;
 159                         last;
 160                 }
 161         }
 162         $icon = urlto($icon, $dest, 1);
 163         $tag = '' unless $tag;
 164         if ($page eq $dest) {
 165                 my %formats = get_formats();
 166                 if ($formats{'GeoJSON'}) {
 167                         will_render($page, "$map/pois.json");
 168                 }
 169                 if ($formats{'CSV'}) {
 170                         will_render($page, "$map/pois.txt");
 171                 }
 172                 if ($formats{'KML'}) {
 173                         will_render($page, "$map/pois.kml");
 174                 }
 175         }
 176         my $href = IkiWiki::cgiurl(
 177                 do => "osm",
 178                 map => $map,
 179                 lat => $lat,
 180                 lon => $lon,
 181                 zoom => $zoom,
 182         );
 183         if (defined($destsources{htmlpage($map)})) {
 184                 $href = urlto($map,$page) . "?lat=$lat&amp;lon=$lon&amp;zoom=$zoom";
 185                 $href =~ s!&!&amp;!g;
 186         }
 187         $pagestate{$page}{'osm'}{$map}{'waypoints'}{$name} = {
 188                 page => $page,
 189                 desc => $desc,
 190                 icon => $icon,
 191                 tag => $tag,
 192                 lat => $lat,
 193                 lon => $lon,
 194                 # How to link back to the page from the map, not to be
 195                 # confused with the URL of the map itself sent to the
 196                 # embeded map below. Note: used in generated KML etc file,
 197                 # so must be absolute.
 198                 href => urlto($page),
 199         };
 200         my $output = '';
 201         if (defined($params{'embed'})) {
 202                 $params{'href'} = $href; # propagate down to embeded
 203                 $output .= preprocess(%params);
 204         }
 205         if (!$hidden) {
 206                 $output .= "<a href=\"$href\"><img class=\"img\" src=\"$icon\" $alt /></a>";
 207         }
 208         return $output;
 209 }
 210
 211 # get the icon from the given tag
 212 sub get_tag_icon($) {
 213         my $tag = shift;
 214         # look for an icon attached to the tag
 215         my $attached = $tag . '/' . $config{'osm_tag_default_icon'};
 216         if (srcfile($attached)) {
 217                 return $attached;
 218         }
 219         else {
 220                 return undef;
 221         }
 222 }
 223
 224 sub scrub_lonlat($$$) {
 225         my ($loc, $lon, $lat) = @_;
 226         if ($loc) {
 227                 if ($loc =~ /^\s*(\-?\d+(?:\.\d*°?|(?:°?|\s)\s*\d+(?:\.\d*\'?|(?:\'|\s)\s*\d+(?:\.\d*)?\"?|\'?)°?)[NS]?)\s*\,?\;?\s*(\-?\d+(?:\.\d*°?|(?:°?|\s)\s*\d+(?:\.\d*\'?|(?:\'|\s)\s*\d+(?:\.\d*)?\"?|\'?)°?)[EW]?)\s*$/) {
 228                         $lat = $1;
 229                         $lon = $2;
 230                 }
 231                 else {
 232                         error("Bad loc");
 233                 }
 234         }
 235         if (defined($lat)) {
 236                 if ($lat =~ /^(\-?)(\d+)(?:(\.\d*)°?|(?:°|\s)\s*(\d+)(?:(\.\d*)\'?|(?:\'|\s)\s*(\d+(?:\.\d*)?\"?)|\'?)|°?)\s*([NS])?\s*$/) {
 237                         $lat = $2 + ($3//0) + ((($4//0) + (($5//0) + (($6//0)/60.)))/60.);
 238                         if (($1 eq '-') || (($7//'') eq 'S')) {
 239                                 $lat = - $lat;
 240                         }
 241                 }
 242                 else {
 243                         error("Bad lat");
 244                 }
 245         }
 246         if (defined($lon)) {
 247                 if ($lon =~ /^(\-?)(\d+)(?:(\.\d*)°?|(?:°|\s)\s*(\d+)(?:(\.\d*)\'?|(?:\'|\s)\s*(\d+(?:\.\d*)?\"?)|\'?)|°?)\s*([EW])?$/) {
 248                         $lon = $2 + ($3//0) + ((($4//0) + (($5//0) + (($6//0)/60.)))/60.);
 249                         if (($1 eq '-') || (($7//'') eq 'W')) {
 250                                 $lon = - $lon;
 251                         }
 252                 }
 253                 else {
 254                         error("Bad lon");
 255                 }
 256         }
 257         if ($lat < -90 || $lat > 90 || $lon < -180 || $lon > 180) {
 258                 error("Location out of range");
 259         }
 260         return ($lon, $lat);
 261 }
 262
 263 sub savestate {
 264         my %waypoints = ();
 265         my %linestrings = ();
 266
 267         foreach my $page (keys %pagestate) {
 268                 if (exists $pagestate{$page}{'osm'}) {
 269                         foreach my $map (keys %{$pagestate{$page}{'osm'}}) {
 270                                 foreach my $name (keys %{$pagestate{$page}{'osm'}{$map}{'waypoints'}}) {
 271                                         debug("found waypoint $name");
 272                                         $waypoints{$map}{$name} = $pagestate{$page}{'osm'}{$map}{'waypoints'}{$name};
 273                                 }
 274                         }
 275                 }
 276         }
 277
 278         foreach my $page (keys %pagestate) {
 279                 if (exists $pagestate{$page}{'osm'}) {
 280                         foreach my $map (keys %{$pagestate{$page}{'osm'}}) {
 281                                 # examine the links on this page
 282                                 foreach my $name (keys %{$pagestate{$page}{'osm'}{$map}{'waypoints'}}) {
 283                                         if (exists $links{$page}) {
 284                                                 foreach my $otherpage (@{$links{$page}}) {
 285                                                         if (exists $waypoints{$map}{$otherpage}) {
 286                                                                 push(@{$linestrings{$map}}, [
 287                                                                         [ $waypoints{$map}{$name}{'lon'}, $waypoints{$map}{$name}{'lat'} ],
 288                                                                         [ $waypoints{$map}{$otherpage}{'lon'}, $waypoints{$map}{$otherpage}{'lat'} ]
 289                                                                 ]);
 290                                                         }
 291                                                 }
 292                                         }
 293                                 }
 294                         }
 295                         # clear the state, it will be regenerated on the next parse
 296                         # the idea here is to clear up removed waypoints...
 297                         $pagestate{$page}{'osm'} = ();
 298                 }
 299         }
 300
 301         my %formats = get_formats();
 302         if ($formats{'GeoJSON'}) {
 303                 writejson(\%waypoints, \%linestrings);
 304         }
 305         if ($formats{'CSV'}) {
 306                 writecsvs(\%waypoints, \%linestrings);
 307         }
 308         if ($formats{'KML'}) {
 309                 writekml(\%waypoints, \%linestrings);
 310         }
 311 }
 312
 313 sub writejson($;$) {
 314         my %waypoints = %{$_[0]};
 315         my %linestrings = %{$_[1]};
 316         eval q{use JSON};
 317         error $@ if $@;
 318         foreach my $map (keys %waypoints) {
 319                 my %geojson = ( "type" => "FeatureCollection", "features" => []);
 320                 foreach my $name (keys %{$waypoints{$map}}) {
 321                         my %marker = ( "type" => "Feature",
 322                                 "geometry" => { "type" => "Point", "coordinates" => [ $waypoints{$map}{$name}{'lon'}, $waypoints{$map}{$name}{'lat'} ] },
 323                                 "properties" => $waypoints{$map}{$name} );
 324                         push @{$geojson{'features'}}, \%marker;
 325                 }
 326                 foreach my $linestring (@{$linestrings{$map}}) {
 327                         my %json  = ( "type" => "Feature",
 328                                 "geometry" => { "type" => "LineString", "coordinates" => $linestring });
 329                         push @{$geojson{'features'}}, \%json;
 330                 }
 331                 writefile("pois.json", $config{destdir} . "/$map", to_json(\%geojson));
 332         }
 333 }
 334
 335 sub writekml($;$) {
 336         my %waypoints = %{$_[0]};
 337         my %linestrings = %{$_[1]};
 338         eval q{use XML::Writer};
 339         error $@ if $@;
 340         foreach my $map (keys %waypoints) {
 341
 342 =pod
 343 Sample placemark:
 344
 345 <?xml version="1.0" encoding="UTF-8"?>
 346 <kml xmlns="http://www.opengis.net/kml/2.2">
 347   <Placemark>
 348     <name>Simple placemark</name>
 349     <description>Attached to the ground. Intelligently places itself
 350        at the height of the underlying terrain.</description>
 351     <Point>
 352       <coordinates>-122.0822035425683,37.42228990140251,0</coordinates>
 353     </Point>
 354   </Placemark>
 355 </kml>
 356
 357 Sample style:
 358
 359
 360         <Style id="sh_sunny_copy69">
 361                 <IconStyle>
 362                         <scale>1.4</scale>
 363                         <Icon>
 364                                 <href>http://waypoints.google.com/mapfiles/kml/shapes/sunny.png</href>
 365                         </Icon>
 366                         <hotSpot x="0.5" y="0.5" xunits="fraction" yunits="fraction"/>
 367                 </IconStyle>
 368                 <LabelStyle>
 369                         <color>ff00aaff</color>
 370                 </LabelStyle>
 371         </Style>
 372
 373
 374 =cut
 375
 376                 my $output;
 377                 my $writer = XML::Writer->new( OUTPUT => \$output,
 378                         DATA_MODE => 1, ENCODING => 'UTF-8');
 379                 $writer->xmlDecl();
 380                 $writer->startTag("kml", "xmlns" => "http://www.opengis.net/kml/2.2");
 381
 382                 # first pass: get the icons
 383                 foreach my $name (keys %{$waypoints{$map}}) {
 384                         my %options = %{$waypoints{$map}{$name}};
 385                         $writer->startTag("Style", id => $options{tag});
 386                         $writer->startTag("IconStyle");
 387                         $writer->startTag("Icon");
 388                         $writer->startTag("href");
 389                         $writer->characters($options{icon});
 390                         $writer->endTag();
 391                         $writer->endTag();
 392                         $writer->endTag();
 393                         $writer->endTag();
 394                 }
 395
 396                 foreach my $name (keys %{$waypoints{$map}}) {
 397                         my %options = %{$waypoints{$map}{$name}};
 398                         $writer->startTag("Placemark");
 399                         $writer->startTag("name");
 400                         $writer->characters($name);
 401                         $writer->endTag();
 402                         $writer->startTag("styleUrl");
 403                         $writer->characters('#' . $options{tag});
 404                         $writer->endTag();
 405                         #$writer->emptyTag('atom:link', href => $options{href});
 406                         # to make it easier for us as the atom:link parameter is
 407                         # hard to access from javascript
 408                         $writer->startTag('href');
 409                         $writer->characters($options{href});
 410                         $writer->endTag();
 411                         $writer->startTag("description");
 412                         $writer->characters($options{desc});
 413                         $writer->endTag();
 414                         $writer->startTag("Point");
 415                         $writer->startTag("coordinates");
 416                         $writer->characters($options{lon} . "," . $options{lat});
 417                         $writer->endTag();
 418                         $writer->endTag();
 419                         $writer->endTag();
 420                 }
 421
 422                 my $i = 0;
 423                 foreach my $linestring (@{$linestrings{$map}}) {
 424                         $writer->startTag("Placemark");
 425                         $writer->startTag("name");
 426                         $writer->characters("linestring " . $i++);
 427                         $writer->endTag();
 428                         $writer->startTag("LineString");
 429                         $writer->startTag("coordinates");
 430                         my $str = '';
 431                         foreach my $coord (@{$linestring}) {
 432                                 $str .= join(',', @{$coord}) . " \n";
 433                         }
 434                         $writer->characters($str);
 435                         $writer->endTag();
 436                         $writer->endTag();
 437                         $writer->endTag();
 438                 }
 439                 $writer->endTag();
 440                 $writer->end();
 441
 442                 writefile("pois.kml", $config{destdir} . "/$map", $output);
 443         }
 444 }
 445
 446 sub writecsvs($;$) {
 447         my %waypoints = %{$_[0]};
 448         foreach my $map (keys %waypoints) {
 449                 my $poisf = "lat\tlon\ttitle\tdescription\ticon\ticonSize\ticonOffset\n";
 450                 foreach my $name (keys %{$waypoints{$map}}) {
 451                         my %options = %{$waypoints{$map}{$name}};
 452                         my $line =
 453                                 $options{'lat'} . "\t" .
 454                                 $options{'lon'} . "\t" .
 455                                 $name . "\t" .
 456                                 $options{'desc'} . '<br /><a href="' . $options{'page'} . '">' . $name . "</a>\t" .
 457                                 $options{'icon'} . "\n";
 458                         $poisf .= $line;
 459                 }
 460                 writefile("pois.txt", $config{destdir} . "/$map", $poisf);
 461         }
 462 }
 463
 464 # pipe some data through the HTML scrubber
 465 #
 466 # code taken from the meta.pm plugin
 467 sub scrub($$$) {
 468         if (IkiWiki::Plugin::htmlscrubber->can("sanitize")) {
 469                 return IkiWiki::Plugin::htmlscrubber::sanitize(
 470                         content => shift, page => shift, destpage => shift);
 471         }
 472         else {
 473                 return shift;
 474         }
 475 }
 476
 477 # taken from toggle.pm
 478 sub format (@) {
 479         my %params=@_;
 480
 481         if ($params{content}=~m!<div[^>]*id="mapdiv-[^"]*"[^>]*>!g) {
 482                 if (! ($params{content}=~s!</body>!include_javascript($params{page})."</body>"!em)) {
 483                         # no <body> tag, probably in preview mode
 484                         $params{content}=$params{content} . include_javascript($params{page});
 485                 }
 486         }
 487         return $params{content};
 488 }
 489
 490 sub preferred_format() {
 491         if (!defined($config{'osm_format'}) || !$config{'osm_format'}) {
 492                 $config{'osm_format'} = 'KML';
 493         }
 494         my @spl = split(/, */, $config{'osm_format'});
 495         return shift @spl;
 496 }
 497
 498 sub get_formats() {
 499         if (!defined($config{'osm_format'}) || !$config{'osm_format'}) {
 500                 $config{'osm_format'} = 'KML';
 501         }
 502         map { $_ => 1 } split(/, */, $config{'osm_format'});
 503 }
 504
 505 sub include_javascript ($) {
 506         my $page=shift;
 507         my $loader;
 508
 509         if (exists $pagestate{$page}{'osm'}) {
 510                 foreach my $map (keys %{$pagestate{$page}{'osm'}}) {
 511                         foreach my $name (keys %{$pagestate{$page}{'osm'}{$map}{'displays'}}) {
 512                                 $loader .= map_setup_code($map, $name, %{$pagestate{$page}{'osm'}{$map}{'displays'}{$name}});
 513                         }
 514                 }
 515         }
 516         if ($loader) {
 517                 return embed_map_code($page) . "<script type=\"text/javascript\" charset=\"utf-8\">$loader</script>";
 518         }
 519         else {
 520                 return '';
 521         }
 522 }
 523
 524 sub cgi($) {
 525         my $cgi=shift;
 526
 527         return unless defined $cgi->param('do') &&
 528                 $cgi->param("do") eq "osm";
 529
 530         IkiWiki::loadindex();
 531
 532         IkiWiki::decode_cgi_utf8($cgi);
 533
 534         my $map = $cgi->param('map');
 535         if (!defined $map || $map !~ /^[a-z]*$/) {
 536                 error("invalid map parameter");
 537         }
 538
 539         print "Content-Type: text/html\r\n";
 540         print ("\r\n");
 541         print "<html><body>";
 542         print "<div id=\"mapdiv-$map\"></div>";
 543         print embed_map_code();
 544         print "<script type=\"text/javascript\" charset=\"utf-8\">";
 545         print map_setup_code($map, $map,
 546                 lat => "urlParams['lat']",
 547                 lon => "urlParams['lon']",
 548                 zoom => "urlParams['zoom']",
 549                 fullscreen => 1,
 550                 editable => 1,
 551         );
 552         print "</script>";
 553         print "</body></html>";
 554
 555         exit 0;
 556 }
 557
 558 sub embed_map_code(;$) {
 559         my $page=shift;
 560         return '<script src="http://www.openlayers.org/api/OpenLayers.js" type="text/javascript" charset="utf-8"></script>'.
 561                 '<script src="'.urlto("ikiwiki/osm.js", $page).
 562                 '" type="text/javascript" charset="utf-8"></script>'."\n";
 563 }
 564
 565 sub map_setup_code($;@) {
 566         my $map=shift;
 567         my $name=shift;
 568         my %options=@_;
 569
 570         eval q{use JSON};
 571         error $@ if $@;
 572
 573         $options{'format'} = preferred_format();
 574
 575         my %formats = get_formats();
 576         if ($formats{'GeoJSON'}) {
 577                 $options{'jsonurl'} = urlto($map."/pois.json");
 578         }
 579         if ($formats{'CSV'}) {
 580                 $options{'csvurl'} = urlto($map."/pois.txt");
 581         }
 582         if ($formats{'KML'}) {
 583                 $options{'kmlurl'} = urlto($map."/pois.kml");
 584         }
 585
 586         return "mapsetup('mapdiv-$name', " . to_json(\%options) . ");";
 587 }
 588
 589 1;