opac/opac-tags.pl

   1 #!/usr/bin/perl
   2
   3 # Copyright 2000-2002 Katipo Communications
   4 #
   5 # This file is part of Koha.
   6 #
   7 # Koha is free software; you can redistribute it and/or modify it
   8 # under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # Koha is distributed in the hope that it will be useful, but
  13 # WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
  19
  20
  21 =head1 NAME
  22
  23 opac-tags.pl
  24
  25 =head1 DESCRIPTION
  26
  27 TODO :: Description here
  28
  29 C4::Scrubber is used to remove all markup content from the sumitted text.
  30
  31 =cut
  32
  33 use Modern::Perl;
  34
  35 use CGI qw ( -utf8 );
  36 use CGI::Cookie; # need to check cookies before having CGI parse the POST request
  37
  38 use C4::Auth qw(:DEFAULT check_cookie_auth);
  39 use C4::Context;
  40 use C4::Debug;
  41 use C4::Output qw(:html :ajax pagination_bar);
  42 use C4::Scrubber;
  43 use C4::Biblio;
  44 use C4::Items qw(GetItemsInfo GetHiddenItemnumbers);
  45 use C4::Tags qw(add_tag get_approval_rows get_tag_rows remove_tag stratify_tags);
  46 use C4::XSLT;
  47
  48 use Data::Dumper;
  49
  50 use Koha::Biblios;
  51
  52 my %newtags = ();
  53 my @deltags = ();
  54 my %counts  = ();
  55 my @errors  = ();
  56 my $perBibResults = {};
  57
  58 # Indexes of @errors that do not apply to a particular biblionumber.
  59 my @globalErrorIndexes = ();
  60
  61 sub ajax_auth_cgi {     # returns CGI object
  62         my $needed_flags = shift;
  63     my %cookies = CGI::Cookie->fetch;
  64         my $input = CGI->new;
  65     my $sessid = $cookies{'CGISESSID'}->value;
  66         my ($auth_status, $auth_sessid) = check_cookie_auth($sessid, $needed_flags);
  67         $debug and
  68         print STDERR "($auth_status, $auth_sessid) = check_cookie_auth($sessid," . Dumper($needed_flags) . ")\n";
  69         if ($auth_status ne "ok") {
  70                 output_with_http_headers $input, undef,
  71                 "window.alert('Your CGI session cookie ($sessid) is not current.  " .
  72                 "Please refresh the page and try again.');\n", 'js';
  73                 exit 0;
  74         }
  75         $debug and print STDERR "AJAX request: " . Dumper($input),
  76                 "\n(\$auth_status,\$auth_sessid) = ($auth_status,$auth_sessid)\n";
  77         return $input;
  78 }
  79
  80 # The trick here is to support multiple tags added to multiple bilbios in one POST.
  81 # The HTML might not use this, but it makes it more web-servicey from the start.
  82 # So the name of param has to have biblionumber built in.
  83 # For lack of anything more compelling, we just use "newtag[biblionumber]"
  84 # We split the value into tags at comma and semicolon
  85
  86 my $is_ajax = is_ajax();
  87 my $openadds = C4::Context->preference('TagsModeration') ? 0 : 1;
  88 my $query = ($is_ajax) ? &ajax_auth_cgi({}) : CGI->new();
  89 unless (C4::Context->preference('TagsEnabled')) {
  90         push @errors, {+ tagsdisabled=>1 };
  91     push @globalErrorIndexes, $#errors;
  92 } else {
  93         foreach ($query->param) {
  94                 if (/^newtag(.*)/) {
  95                         my $biblionumber = $1;
  96                         unless ($biblionumber =~ /^\d+$/) {
  97                                 $debug and warn "$_ references non numerical biblionumber '$biblionumber'";
  98                                 push @errors, {+'badparam' => $_ };
  99                 push @globalErrorIndexes, $#errors;
 100                                 next;
 101                         }
 102                         $newtags{$biblionumber} = $query->param($_);
 103                 } elsif (/^del(\d+)$/) {
 104                         push @deltags, $1;
 105                 }
 106         }
 107 }
 108
 109 my $add_op = (scalar(keys %newtags) + scalar(@deltags)) ? 1 : 0;
 110 my ($template, $loggedinuser, $cookie);
 111 if ($is_ajax) {
 112         $loggedinuser = C4::Context->userenv->{'number'};  # must occur AFTER auth
 113         $debug and print STDERR "op: $loggedinuser\n";
 114 } else {
 115         ($template, $loggedinuser, $cookie) = get_template_and_user({
 116         template_name   => "opac-tags.tt",
 117         query           => $query,
 118         type            => "opac",
 119         authnotrequired => ($add_op ? 0 : 1), # auth required to add tags
 120         debug           => 1,
 121         });
 122 }
 123
 124 if ($add_op) {
 125         unless ($loggedinuser) {
 126                 push @errors, {+'login' => 1 };
 127         push @globalErrorIndexes, $#errors;
 128                 %newtags=();    # zero out any attempted additions
 129                 @deltags=();    # zero out any attempted deletions
 130         }
 131 }
 132
 133 my $scrubber;
 134 my @newtags_keys = (keys %newtags);
 135 if (scalar @newtags_keys) {
 136         $scrubber = C4::Scrubber->new();
 137         foreach my $biblionumber (@newtags_keys) {
 138         my $bibResults = {adds=>0, errors=>[]};
 139                 my @values = split /[;,]/, $newtags{$biblionumber};
 140                 foreach (@values) {
 141                         s/^\s*(.+)\s*$/$1/;
 142                         my $clean_tag = $scrubber->scrub($_);
 143                         unless ($clean_tag eq $_) {
 144                                 if ($clean_tag =~ /\S/) {
 145                                         push @errors, {scrubbed=>$clean_tag};
 146                                         push @{$bibResults->{errors}}, {scrubbed=>$clean_tag};
 147                                 } else {
 148                                         push @errors, {scrubbed_all_bad=>1};
 149                                         push @{$bibResults->{errors}}, {scrubbed_all_bad=>1};
 150                                         next;   # we don't add it if there's nothing left!
 151                                 }
 152                         }
 153                         my $result = ($openadds) ?
 154                                 add_tag($biblionumber,$clean_tag,$loggedinuser,$loggedinuser) : # pre-approved
 155                                 add_tag($biblionumber,$clean_tag,$loggedinuser)   ;
 156                         if ($result) {
 157                                 $counts{$biblionumber}++;
 158                 $bibResults->{adds}++;
 159                         } else {
 160                                 push @errors, {failed_add_tag=>$clean_tag};
 161                                 push @{$bibResults->{errors}}, {failed_add_tag=>$clean_tag};
 162                                 $debug and warn "add_tag($biblionumber,$clean_tag,$loggedinuser...) returned bad result (" . (defined $result ? $result : 'UNDEF') .")";
 163                         }
 164                 }
 165         $perBibResults->{$biblionumber} = $bibResults;
 166         }
 167 }
 168 my $dels = 0;
 169 foreach (@deltags) {
 170         if (remove_tag($_,$loggedinuser)) {
 171                 $dels++;
 172         } else {
 173                 push @errors, {failed_delete=>$_};
 174         }
 175 }
 176
 177 if ($is_ajax) {
 178         my $sum = 0;
 179         foreach (values %counts) {$sum += $_;}
 180         my $js_reply = sprintf("response = {\n\tadded: %d,\n\tdeleted: %d,\n\terrors: %d",$sum,$dels,scalar @errors);
 181
 182     # If no add attempts were made, flag global errors.
 183     if (@globalErrorIndexes) {
 184         $js_reply .= ",\n\tglobal_errors: [";
 185         my $first = 1;
 186         foreach (@globalErrorIndexes) {
 187             $js_reply .= "," unless $first;
 188             $first = 0;
 189             $js_reply .= "\n\t\t$_";
 190         }
 191         $js_reply .= "\n\t]";
 192     }
 193
 194         my $err_string = '';
 195         if (scalar @errors) {
 196                 $err_string = ",\n\talerts: ["; # open response_function
 197                 my $i = 1;
 198                 foreach (@errors) {
 199                         my $key = (keys %$_)[0];
 200                         $err_string .= "\n\t\t KOHA.Tags.tag_message.$key(\"" . $_->{$key} . '")';
 201                         if($i < scalar @errors){ $err_string .= ","; }
 202                         $i++;
 203                 }
 204                 $err_string .= "\n\t]\n";       # close response_function
 205         }
 206
 207     # Add per-biblionumber results for use on results page
 208     my $js_perbib = "";
 209     for my $bib (keys %$perBibResults) {
 210         my $bibResult = $perBibResults->{$bib};
 211         my $js_bibres = ",\n\t$bib: {\n\t\tadded: $bibResult->{adds}";
 212         $js_bibres .= ",\n\t\terrors: [";
 213         my $i = 0;
 214         foreach (@{$bibResult->{errors}}) {
 215             $js_bibres .= "," if ($i);
 216                         my $key = (keys %$_)[0];
 217                         $js_bibres .= "\n\t\t\t KOHA.Tags.tag_message.$key(\"" . $_->{$key} . '")';
 218             $i++;
 219         }
 220         $js_bibres .= "\n\t\t]\n\t}";
 221         $js_perbib .= $js_bibres;
 222     }
 223
 224         output_with_http_headers($query, undef, "$js_reply\n$err_string\n$js_perbib\n};", 'js');
 225         exit;
 226 }
 227
 228 my $results = [];
 229 my $my_tags = [];
 230 my $borcat  = q{};
 231
 232 if ($loggedinuser) {
 233     my $patron = Koha::Patrons->find( { borrowernumber => $loggedinuser } );
 234     $borcat = $patron ? $patron->categorycode : $borcat;
 235     my $should_hide = C4::Context->preference('OpacHiddenItems') // q{};
 236     $should_hide = ( $should_hide =~ /\S/ ) ? 1 : 0;
 237     $my_tags = get_tag_rows({borrowernumber=>$loggedinuser});
 238     my $my_approved_tags = get_approval_rows({ approved => 1 });
 239     foreach my $tag (@$my_tags) {
 240         $tag->{visible} = 0;
 241         my $biblio = Koha::Biblios->find( $tag->{biblionumber} );
 242         my $record = &GetMarcBiblio({
 243             biblionumber => $tag->{biblionumber},
 244             embed_items  => 1,
 245             opac         => 1,
 246             borcat       => $borcat });
 247         next unless $record;
 248         my $hidden_items = undef;
 249         my @hidden_itemnumbers;
 250         my @all_items;
 251         if ($should_hide) {
 252             @all_items = GetItemsInfo( $tag->{biblionumber} );
 253             @hidden_itemnumbers = GetHiddenItemnumbers({
 254                 items => \@all_items,
 255                 borcat => $borcat });
 256             $hidden_items = \@hidden_itemnumbers;
 257         }
 258         next if ( $should_hide && scalar @all_items == scalar @hidden_itemnumbers );
 259         $tag->{subtitle} = GetRecordValue( 'subtitle', $record, GetFrameworkCode( $tag->{biblionumber} ) );
 260         $tag->{title} = $biblio->title;
 261         $tag->{author} = $biblio->author;
 262
 263         my $xslfile = C4::Context->preference('OPACXSLTResultsDisplay');
 264         my $lang   = $xslfile ? C4::Languages::getlanguage()  : undef;
 265         my $sysxml = $xslfile ? C4::XSLT::get_xslt_sysprefs() : undef;
 266
 267         if ( $xslfile ) {
 268             $tag->{XSLTBloc} = XSLTParse4Display(
 269                     $tag->{ biblionumber }, $record, "OPACXSLTResultsDisplay",
 270                     1, $hidden_items, $sysxml, $xslfile, $lang
 271             );
 272         }
 273
 274         my $date = $tag->{date_created} || '';
 275         $date =~ /\s+(\d{2}\:\d{2}\:\d{2})/;
 276         $tag->{time_created_display} = $1;
 277         $tag->{approved} = ( grep { $_->{term} eq $tag->{term} and $_->{approved} } @$my_approved_tags );
 278         $tag->{visible} = 1;
 279     }
 280 }
 281
 282 $template->param(tagsview => 1);
 283
 284 if ($add_op) {
 285         my $adds = 0;
 286         for (values %counts) {$adds += $_;}
 287         $template->param(
 288                 add_op => 1,
 289                 added_count => $adds,
 290                 deleted_count => $dels,
 291         );
 292 } else {
 293         my ($arg,$limit,$mine);
 294         my $hardmax = 100;      # you might disagree what this value should be, but there definitely should be a max
 295         $limit = $query->param('limit') || $hardmax;
 296     $mine =  $query->param('mine') || 0; # set if the patron want to see only his own tags.
 297         ($limit =~ /^\d+$/ and $limit <= $hardmax) or $limit = $hardmax;
 298         $template->param(limit => $limit);
 299         my $arghash = {approved=>1, limit=>$limit, 'sort'=>'-weight_total'};
 300     $arghash->{'borrowernumber'} = $loggedinuser if $mine;
 301         # ($openadds) or $arghash->{approved} = 1;
 302         if ($arg = $query->param('tag')) {
 303                 $arghash->{term} = $arg;
 304         } elsif ($arg = $query->param('biblionumber')) {
 305                 $arghash->{biblionumber} = $arg;
 306         }
 307         $results = get_approval_rows($arghash);
 308     my @filtered_results;
 309     foreach my $my_tag (@$my_tags) {
 310         if (grep { $_->{term} eq $my_tag->{term} } @$results) {
 311             if (! $my_tag->{visible} ) {
 312                 my $check_biblio = GetMarcBiblio({
 313                     biblionumber => $my_tag->{biblionumber},
 314                     embed_items  => 1,
 315                     opac         => 1,
 316                     borcat       => $borcat });
 317                 if ($check_biblio) {
 318                     push @filtered_results, $my_tag;
 319                 }
 320             } else {
 321                 push @filtered_results, $my_tag;
 322             }
 323         }
 324     }
 325     $results = \@filtered_results;
 326     stratify_tags(10, $results); # work out the differents sizes for things
 327         my $count = scalar @$results;
 328         $template->param(TAGLOOP_COUNT => $count, mine => $mine);
 329 }
 330 (scalar @errors  ) and $template->param(ERRORS  => \@errors);
 331 my @orderedresult = sort { uc($a->{'term'}) cmp uc($b->{'term'}) } @$results;
 332 (scalar @$results) and $template->param(TAGLOOP => \@orderedresult );
 333 (scalar @$my_tags) and $template->param(MY_TAGS => $my_tags);
 334
 335 output_html_with_http_headers $query, $cookie, $template->output;
 336 __END__
 337
 338 =head1 EXAMPLE AJAX POST PARAMETERS
 339
 340 CGISESSID       7c6288263107beb320f70f78fd767f56
 341 newtag396       fire,+<a+href="foobar.html">foobar</a>,+<img+src="foo.jpg"+/>
 342
 343 So this request is trying to add 3 tags to biblio #396.  The CGISESSID is the same as that the browser would
 344 typically communicate using cookies.  If it is valid, the server will split the value of "newtag396" and
 345 process the components for addition.  In this case the intended tags are:
 346         fire
 347         <a+href="foobar.html">foobar</a>
 348         <img src="foo.jpg" />
 349
 350 The first tag is acceptable.  The second will be scrubbed of markup, resulting in the tag "foobar".
 351 The third tag is all markup, and will be rejected.
 352
 353 =head1 EXAMPLE AJAX JSON response
 354
 355 response = {
 356         added: 2,
 357         deleted: 0,
 358         errors: 2,
 359         alerts: [
 360                  KOHA.Tags.tag_message.scrubbed("foobar"),
 361                  KOHA.Tags.tag_message.scrubbed_all_bad("1"),
 362         ],
 363 };
 364
 365 =cut
 366