opac/opac-shareshelf.pl

   1 #!/usr/bin/perl
   2
   3 # Copyright 2013 Rijksmuseum
   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 use Modern::Perl;
  21
  22 use constant KEYLENGTH     => 10;
  23 use constant TEMPLATE_NAME => 'opac-shareshelf.tt';
  24 use constant SHELVES_URL =>
  25   '/cgi-bin/koha/opac-shelves.pl?display=privateshelves&viewshelf=';
  26
  27 use CGI;
  28 use Email::Valid;
  29
  30 use C4::Auth;
  31 use C4::Context;
  32 use C4::Letters;
  33 use C4::Members ();
  34 use C4::Output;
  35 use C4::VirtualShelves;
  36
  37 #-------------------------------------------------------------------------------
  38
  39 my $pvar = _init( {} );
  40 if ( !$pvar->{errcode} ) {
  41     show_invite($pvar)    if $pvar->{op} eq 'invite';
  42     confirm_invite($pvar) if $pvar->{op} eq 'conf_invite';
  43     show_accept($pvar)    if $pvar->{op} eq 'accept';
  44 }
  45 load_template_vars($pvar);
  46 output_html_with_http_headers $pvar->{query}, $pvar->{cookie},
  47   $pvar->{template}->output;
  48
  49 #-------------------------------------------------------------------------------
  50
  51 sub _init {
  52     my ($param) = @_;
  53     my $query = new CGI;
  54     $param->{query}       = $query;
  55     $param->{shelfnumber} = $query->param('shelfnumber') || 0;
  56     $param->{op}          = $query->param('op') || '';
  57     $param->{addrlist}    = $query->param('invite_address') || '';
  58     $param->{key}         = $query->param('key') || '';
  59     $param->{appr_addr}   = [];
  60     $param->{fail_addr}   = [];
  61     $param->{errcode}     = check_common_errors($param);
  62
  63     #get some list details
  64     my @temp;
  65     @temp = GetShelf( $param->{shelfnumber} ) if !$param->{errcode};
  66     $param->{shelfname} = @temp ? $temp[1] : '';
  67     $param->{owner}     = @temp ? $temp[2] : -1;
  68     $param->{category}  = @temp ? $temp[3] : -1;
  69
  70     load_template($param);
  71     return $param;
  72 }
  73
  74 sub check_common_errors {
  75     my ($param) = @_;
  76     if ( $param->{op} !~ /^(invite|conf_invite|accept)$/ ) {
  77         return 1;    #no operation specified
  78     }
  79     if ( $param->{shelfnumber} !~ /^\d+$/ ) {
  80         return 2;    #invalid shelf number
  81     }
  82     if ( !C4::Context->preference('OpacAllowSharingPrivateLists') ) {
  83         return 3;    #not or no longer allowed?
  84     }
  85     return;
  86 }
  87
  88 sub show_invite {
  89     my ($param) = @_;
  90     return unless check_owner_category($param);
  91 }
  92
  93 sub confirm_invite {
  94     my ($param) = @_;
  95     return unless check_owner_category($param);
  96     process_addrlist($param);
  97     if ( @{ $param->{appr_addr} } ) {
  98         send_invitekey($param);
  99     }
 100     else {
 101         $param->{errcode} = 6;    #not one valid address
 102     }
 103 }
 104
 105 sub show_accept {
 106     my ($param) = @_;
 107
 108     my @rv = ShelfPossibleAction( $param->{loggedinuser},
 109         $param->{shelfnumber}, 'acceptshare' );
 110     $param->{errcode} = $rv[1] if !$rv[0];
 111     return if $param->{errcode};
 112
 113     #errorcode 5: should be private list
 114     #errorcode 8: should not be owner
 115
 116     my $dbkey = keytostring( stringtokey( $param->{key}, 0 ), 1 );
 117     if ( AcceptShare( $param->{shelfnumber}, $dbkey, $param->{loggedinuser} ) )
 118     {
 119         notify_owner($param);
 120
 121         #redirect to view of this shared list
 122         print $param->{query}->redirect(
 123             -uri    => SHELVES_URL . $param->{shelfnumber},
 124             -cookie => $param->{cookie}
 125         );
 126         exit;
 127     }
 128     else {
 129         $param->{errcode} = 7;    #not accepted (key not found or expired)
 130     }
 131 }
 132
 133 sub notify_owner {
 134     my ($param) = @_;
 135
 136     my $toaddr = C4::Members::GetNoticeEmailAddress( $param->{owner} );
 137     return if !$toaddr;
 138
 139     #prepare letter
 140     my $letter = C4::Letters::GetPreparedLetter(
 141         module      => 'members',
 142         letter_code => 'SHARE_ACCEPT',
 143         branchcode  => C4::Context->userenv->{"branch"},
 144         tables      => { borrowers => $param->{loggedinuser}, },
 145         substitute  => { listname => $param->{shelfname}, },
 146     );
 147
 148     #send letter to queue
 149     C4::Letters::EnqueueLetter(
 150         {
 151             letter                 => $letter,
 152             message_transport_type => 'email',
 153             from_address => C4::Context->preference('KohaAdminEmailAddress'),
 154             to_address   => $toaddr,
 155         }
 156     );
 157 }
 158
 159 sub process_addrlist {
 160     my ($param) = @_;
 161     my @temp = split /[,:;]/, $param->{addrlist};
 162     my @appr_addr;
 163     my @fail_addr;
 164     foreach my $a (@temp) {
 165         $a =~ s/^\s+//;
 166         $a =~ s/\s+$//;
 167         if ( IsEmailAddress($a) ) {
 168             push @appr_addr, $a;
 169         }
 170         else {
 171             push @fail_addr, $a;
 172         }
 173     }
 174     $param->{appr_addr} = \@appr_addr;
 175     $param->{fail_addr} = \@fail_addr;
 176 }
 177
 178 sub send_invitekey {
 179     my ($param) = @_;
 180     my $fromaddr = C4::Context->preference('KohaAdminEmailAddress');
 181     my $url =
 182         'http://'
 183       . C4::Context->preference('OPACBaseURL')
 184       . "/cgi-bin/koha/opac-shareshelf.pl?shelfnumber="
 185       . $param->{shelfnumber}
 186       . "&op=accept&key=";
 187
 188     #TODO Waiting for the right http or https solution (BZ 8952 a.o.)
 189
 190     my @ok;    #the addresses that were processed well
 191     foreach my $a ( @{ $param->{appr_addr} } ) {
 192         my @newkey = randomlist( KEYLENGTH, 64 );    #generate a new key
 193
 194         #add a preliminary share record
 195         if ( !AddShare( $param->{shelfnumber}, keytostring( \@newkey, 1 ) ) ) {
 196             push @{ $param->{fail_addr} }, $a;
 197             next;
 198         }
 199         push @ok, $a;
 200
 201         #prepare letter
 202         my $letter = C4::Letters::GetPreparedLetter(
 203             module      => 'members',
 204             letter_code => 'SHARE_INVITE',
 205             branchcode  => C4::Context->userenv->{"branch"},
 206             tables      => { borrowers => $param->{loggedinuser}, },
 207             substitute  => {
 208                 listname => $param->{shelfname},
 209                 shareurl => $url . keytostring( \@newkey, 0 ),
 210             },
 211         );
 212
 213         #send letter to queue
 214         C4::Letters::EnqueueLetter(
 215             {
 216                 letter                 => $letter,
 217                 message_transport_type => 'email',
 218                 from_address           => $fromaddr,
 219                 to_address             => $a,
 220             }
 221         );
 222     }
 223     $param->{appr_addr} = \@ok;
 224 }
 225
 226 sub check_owner_category {
 227     my ($param) = @_;
 228
 229     #sharing user should be the owner
 230     #list should be private
 231     $param->{errcode} = 4 if $param->{owner} != $param->{loggedinuser};
 232     $param->{errcode} = 5 if !$param->{errcode} && $param->{category} != 1;
 233     return !defined $param->{errcode};
 234 }
 235
 236 sub load_template {
 237     my ($param) = @_;
 238     ( $param->{template}, $param->{loggedinuser}, $param->{cookie} ) =
 239       get_template_and_user(
 240         {
 241             template_name   => TEMPLATE_NAME,
 242             query           => $param->{query},
 243             type            => "opac",
 244             authnotrequired => 0,                 #should be a user
 245         }
 246       );
 247 }
 248
 249 sub load_template_vars {
 250     my ($param) = @_;
 251     my $template = $param->{template};
 252     my $appr = join '; ', @{ $param->{appr_addr} };
 253     my $fail = join '; ', @{ $param->{fail_addr} };
 254     $template->param(
 255         errcode         => $param->{errcode},
 256         op              => $param->{op},
 257         shelfnumber     => $param->{shelfnumber},
 258         shelfname       => $param->{shelfname},
 259         approvedaddress => $appr,
 260         failaddress     => $fail,
 261     );
 262 }
 263
 264 sub IsEmailAddress {
 265
 266     #TODO candidate for a module?
 267     return Email::Valid->address( $_[0] ) ? 1 : 0;
 268 }
 269
 270 sub randomlist {
 271
 272     #uses rand, safe enough for this application but not for more sensitive data
 273     my ( $length, $base ) = @_;
 274     return map { int( rand($base) ); } 1 .. $length;
 275 }
 276
 277 sub keytostring {
 278     my ( $keyref, $flgBase64 ) = @_;
 279     if ($flgBase64) {
 280         my $alphabet = [ 'A' .. 'Z', 'a' .. 'z', 0 .. 9, '+', '/' ];
 281         return join '', map { alphabet_char( $_, $alphabet ); } @$keyref;
 282     }
 283     return join '', map { sprintf( "%02d", $_ ); } @$keyref;
 284 }
 285
 286 sub stringtokey {
 287     my ( $str, $flgBase64 ) = @_;
 288     my @temp = split '', $str || '';
 289     if ($flgBase64) {
 290         my $alphabet = [ 'A' .. 'Z', 'a' .. 'z', 0 .. 9, '+', '/' ];
 291         return [ map { alphabet_ordinal( $_, $alphabet ); } @temp ];
 292     }
 293     return [] if $str !~ /^\d+$/;
 294     my @retval;
 295     for ( my $i = 0 ; $i < @temp - 1 ; $i += 2 ) {
 296         push @retval, $temp[$i] * 10 + $temp[ $i + 1 ];
 297     }
 298     return \@retval;
 299 }
 300
 301 sub alphabet_ordinal {
 302     my ( $char, $alphabet ) = @_;
 303     for my $ord ( 0 .. $#$alphabet ) {
 304         return $ord if $char eq $alphabet->[$ord];
 305     }
 306     return '';    #ignore missing chars
 307 }
 308
 309 sub alphabet_char {
 310
 311     #reverse operation for ordinal; ignore invalid numbers
 312     my ( $num, $alphabet ) = @_;
 313     return $num =~ /^\d+$/ && $num <= $#$alphabet ? $alphabet->[$num] : '';
 314 }