summaryrefslogtreecommitdiffstats
path: root/showdependencytree.cgi
blob: d9d71b0abc43ebeb1faf5a808c097aa096bd6efc (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
#!/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;
}