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#!/usr/bin/perl -wT
# -*- Mode: perl; indent-tabs-mode: nil -*-
#
# The contents of this file are subject to the Mozilla Public
# License Version 1.1 (the "License"); you may not use this file
# except in compliance with the License. You may obtain a copy of
# the License at http://www.mozilla.org/MPL/
#
# Software distributed under the License is distributed on an "AS
# IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
# implied. See the License for the specific language governing
# rights and limitations under the License.
#
# The Original Code is the Bugzilla Bug Tracking System.
#
# The Initial Developer of the Original Code is Netscape Communications
# Corporation. Portions created by Netscape are
# Copyright (C) 1998 Netscape Communications Corporation. All
# Rights Reserved.
#
# Contributor(s): Terry Weissman <terry@mozilla.org>
# Andreas Franke <afranke@mathweb.org>
# Christian Reis <kiko@async.com.br>
# Myk Melez <myk@mozilla.org>
use strict;
use lib qw(.);
require "globals.pl";
use Bugzilla::User;
use Bugzilla::Bug;
Bugzilla->login();
my $cgi = Bugzilla->cgi;
my $template = Bugzilla->template;
my $vars = {};
# Connect to the shadow database if this installation is using one to improve
# performance.
my $dbh = Bugzilla->switch_to_shadow_db();
################################################################################
# Data/Security Validation #
################################################################################
# Make sure the bug ID is a positive integer representing an existing
# bug that the user is authorized to access.
my $id = $cgi->param('id');
ValidateBugID($id);
my $hide_resolved = $cgi->param('hide_resolved') ? 1 : 0;
my $maxdepth = $cgi->param('maxdepth') || 0;
if ($maxdepth !~ /^\d+$/) { $maxdepth = 0 };
################################################################################
# Main Section #
################################################################################
# The column/value to select as the target milestone for bugs,
# either the target_milestone column or the empty string value
# (for installations that don't use target milestones). Makes
# it easier to query the database for bugs because we don't
# have to embed a conditional statement into each query.
my $milestone_column = Param('usetargetmilestone') ? "target_milestone" : "''";
# The greatest depth to which either tree goes.
my $realdepth = 0;
# Generate the tree of bugs that this bug depends on and a list of IDs
# appearing in the tree.
my $dependson_tree = { $id => GetBug($id) };
my $dependson_ids = {};
GenerateTree($id, "dependson", 1, $dependson_tree, $dependson_ids);
$vars->{'dependson_tree'} = $dependson_tree;
$vars->{'dependson_ids'} = [keys(%$dependson_ids)];
# Generate the tree of bugs that this bug blocks and a list of IDs
# appearing in the tree.
my $blocked_tree = { $id => GetBug($id) };
my $blocked_ids = {};
GenerateTree($id, "blocked", 1, $blocked_tree, $blocked_ids);
$vars->{'blocked_tree'} = $blocked_tree;
$vars->{'blocked_ids'} = [keys(%$blocked_ids)];
$vars->{'realdepth'} = $realdepth;
$vars->{'bugid'} = $id;
$vars->{'maxdepth'} = $maxdepth;
$vars->{'hide_resolved'} = $hide_resolved;
$vars->{'canedit'} = UserInGroup("editbugs");
print $cgi->header();
$template->process("bug/dependency-tree.html.tmpl", $vars)
|| ThrowTemplateError($template->error());
################################################################################
# Recursive Tree Generation Function #
################################################################################
sub GenerateTree {
# Generates a dependency tree for a given bug. Calls itself recursively
# to generate sub-trees for the bug's dependencies.
my ($bug_id, $relationship, $depth, $bugs, $ids) = @_;
# Query the database for bugs with the given dependency relationship.
my @dependencies = GetDependencies($bug_id, $relationship);
# Don't do anything if this bug doesn't have any dependencies.
return unless scalar(@dependencies);
# Record this depth in the global $realdepth variable if it's farther
# than we've gone before.
$realdepth = max($realdepth, $depth);
foreach my $dep_id (@dependencies) {
# Get this dependency's record from the database and generate
# its sub-tree if we haven't already done so (which happens
# when bugs appear in dependency trees multiple times).
if (!$bugs->{$dep_id}) {
$bugs->{$dep_id} = GetBug($dep_id);
GenerateTree($dep_id, $relationship, $depth+1, $bugs, $ids);
}
# Add this dependency to the list of this bug's dependencies
# if it exists, if we haven't exceeded the maximum depth the user
# wants the tree to go, and if the dependency isn't resolved
# (if we're ignoring resolved dependencies).
if ($bugs->{$dep_id}->{'exists'}
&& (!$maxdepth || $depth <= $maxdepth)
&& ($bugs->{$dep_id}->{'open'} || !$hide_resolved))
{
push (@{$bugs->{$bug_id}->{'dependencies'}}, $dep_id);
$ids->{$dep_id} = 1;
}
}
}
sub GetBug {
# Retrieves the necessary information about a bug, stores it in the bug cache,
# and returns it to the calling code.
my ($id) = @_;
my $dbh = Bugzilla->dbh;
my $bug = {};
if (Bugzilla->user->can_see_bug($id)) {
($bug->{'exists'},
$bug->{'status'},
$bug->{'summary'},
$bug->{'milestone'},
$bug->{'assignee_id'},
$bug->{'assignee_email'}) = $dbh->selectrow_array(
"SELECT 1,
bug_status,
short_desc,
$milestone_column,
assignee.userid,
assignee.login_name
FROM bugs
INNER JOIN profiles AS assignee
ON bugs.assigned_to = assignee.userid
WHERE bugs.bug_id = ?", undef, $id);
}
$bug->{'open'} = $bug->{'exists'} && IsOpenedState($bug->{'status'});
$bug->{'dependencies'} = [];
return $bug;
}
sub GetDependencies {
# Returns a list of dependencies for a given bug.
my ($id, $relationship) = @_;
my $dbh = Bugzilla->dbh;
my $bug_type = ($relationship eq "blocked") ? "dependson" : "blocked";
my $dependencies = $dbh->selectcol_arrayref(
"SELECT $relationship
FROM dependencies
WHERE $bug_type = ?
ORDER BY $relationship", undef, $id);
return @$dependencies;
}
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