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#!/usr/bin/perl -T
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# This Source Code Form is "Incompatible With Secondary Licenses", as
# defined by the Mozilla Public License, v. 2.0.

use 5.10.1;
use strict;
use warnings;

use lib qw(. lib local/lib/perl5);

use Bugzilla;
use Bugzilla::Constants;
use Bugzilla::Error;
use Bugzilla::User;
use Bugzilla::Keyword;
use Bugzilla::Bug;
use Bugzilla::Hook;
use Bugzilla::CGI;
use Bugzilla::Util qw(detaint_natural remote_ip);

my $cgi      = Bugzilla->cgi;
my $template = Bugzilla->template;
my $vars     = {};

my $user = Bugzilla->login();

unless ($user->id) {
  Bugzilla->check_rate_limit("show_bug", remote_ip());
}

# BMO: add show_bug_format for experimental UI work
my $format_params = {
  format => scalar $cgi->param('format'),
  ctype  => scalar $cgi->param('ctype'),
};
Bugzilla::Hook::process('show_bug_format', $format_params);
my $format = $template->get_format(
  "bug/show",
  $format_params->{format},
  $format_params->{ctype}
);

# Editable, 'single' HTML bugs are treated slightly specially in a few places
my $single = (!$format->{format} || $format->{format} ne 'multiple')
  && $format->{extension} eq 'html';

# If we don't have an ID, _AND_ we're only doing a single bug, then prompt
if (!$cgi->param('id') && $single) {
  print Bugzilla->cgi->header();
  $template->process("bug/choose.html.tmpl", $vars)
    || ThrowTemplateError($template->error());
  exit;
}

if ($format_params->{format} eq 'modal') {
  my $bug_id = $cgi->param('id');
  detaint_natural($bug_id);
  $cgi->content_security_policy(Bugzilla::CGI::SHOW_BUG_MODAL_CSP($bug_id));
}


my @bugs;
my %marks;

# If the user isn't logged in, we use data from the shadow DB. If he plans
# to edit the bug(s), he will have to log in first, meaning that the data
# will be reloaded anyway, from the main DB.
Bugzilla->switch_to_shadow_db unless $user->id;

if ($single) {
  my $id = $cgi->param('id');
  push @bugs, Bugzilla::Bug->check({id => $id, cache => 1});
  if (defined $cgi->param('mark')) {
    foreach my $range (split ',', $cgi->param('mark')) {
      if ($range =~ /^(\d+)-(\d+)$/) {
        foreach my $i ($1 .. $2) {
          $marks{$i} = 1;
        }
      }
      elsif ($range =~ /^(\d+)$/) {
        $marks{$1} = 1;
      }
    }
  }
}
else {
  foreach my $id ($cgi->param('id')) {

    # Be kind enough and accept URLs of the form: id=1,2,3.
    my @ids = split(/,/, $id);
    foreach my $bug_id (@ids) {
      my $bug = new Bugzilla::Bug({id => $bug_id, cache => 1});

      # This is basically a backwards-compatibility hack from when
      # Bugzilla::Bug->new used to set 'NotPermitted' if you couldn't
      # see the bug.
      if (!$bug->{error} && !$user->can_see_bug($bug->bug_id)) {
        $bug->{error} = 'NotPermitted';
      }
      push(@bugs, $bug);
    }
  }
}

Bugzilla::Bug->preload(\@bugs);

$vars->{'bugs'}  = \@bugs;
$vars->{'marks'} = \%marks;

my @bugids = map { $_->bug_id } grep { !$_->error } @bugs;
$vars->{'bugids'} = join(", ", @bugids);

# Work out which fields we are displaying (currently XML only.)
# If no explicit list is defined, we show all fields. We then exclude any
# on the exclusion list. This is so you can say e.g. "Everything except
# attachments" without listing almost all the fields.
my @fieldlist = (
  Bugzilla::Bug->fields, 'flag',
  'group',               'long_desc',
  'attachment',          'attachmentdata',
  'token'
);
my %displayfields;

if ($cgi->param("field")) {
  @fieldlist = $cgi->param("field");
}

unless (Bugzilla->user->is_timetracker) {
  @fieldlist = grep($_ !~ /(^deadline|_time)$/, @fieldlist);
}

foreach (@fieldlist) {
  $displayfields{$_} = 1;
}

foreach ($cgi->param("excludefield")) {
  $displayfields{$_} = undef;
}

$vars->{'displayfields'} = \%displayfields;

if ($user->id) {
  foreach my $bug_id (@bugids) {
    Bugzilla->log_user_request($bug_id, undef, 'bug-get');
  }
}
print $cgi->header($format->{'ctype'});

$template->process($format->{'template'}, $vars)
  || ThrowTemplateError($template->error());