summaryrefslogtreecommitdiffstats
path: root/showdependencygraph.cgi
blob: 4e9299a73e85e43a0b9cfaedaf30e6709702ea22 (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
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
#!/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>
#                 Gervase Markham <gerv@gerv.net>

use strict;

use lib qw(.);

use File::Temp;

use Bugzilla;
use Bugzilla::Constants;
use Bugzilla::Util;
use Bugzilla::Error;
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();

local our (%seen, %edgesdone, %bugtitles);

# CreateImagemap: This sub grabs a local filename as a parameter, reads the 
# dot-generated image map datafile residing in that file and turns it into
# an HTML map element. THIS SUB IS ONLY USED FOR LOCAL DOT INSTALLATIONS.
# The map datafile won't necessarily contain the bug summaries, so we'll
# pull possible HTML titles from the %bugtitles hash (filled elsewhere
# in the code)

# The dot mapdata lines have the following format (\nsummary is optional):
# rectangle (LEFTX,TOPY) (RIGHTX,BOTTOMY) URLBASE/show_bug.cgi?id=BUGNUM BUGNUM[\nSUMMARY]

sub CreateImagemap {
    my $mapfilename = shift;
    my $map = "<map name=\"imagemap\">\n";
    my $default;

    open MAP, "<$mapfilename";
    while(my $line = <MAP>) {
        if($line =~ /^default ([^ ]*)(.*)$/) {
            $default = qq{<area alt="" shape="default" href="$1">\n};
        }

        if ($line =~ /^rectangle \((.*),(.*)\) \((.*),(.*)\) (http[^ ]*) (\d+)(\\n.*)?$/) {
            my ($leftx, $rightx, $topy, $bottomy, $url, $bugid) = ($1, $3, $2, $4, $5, $6);

            # Pick up bugid from the mapdata label field. Getting the title from
            # bugtitle hash instead of mapdata allows us to get the summary even
            # when showsummary is off, and also gives us status and resolution.
            my $bugtitle = value_quote($bugtitles{$bugid});
            $map .= qq{<area alt="bug $bugid" name="bug$bugid" shape="rect" } .
                    qq{title="$bugtitle" href="$url" } .
                    qq{coords="$leftx,$topy,$rightx,$bottomy">\n};
        }
    }
    close MAP;

    $map .= "$default</map>";
    return $map;
}

sub AddLink {
    my ($blocked, $dependson, $fh) = (@_);
    my $key = "$blocked,$dependson";
    if (!exists $edgesdone{$key}) {
        $edgesdone{$key} = 1;
        print $fh "$blocked -> $dependson\n";
        $seen{$blocked} = 1;
        $seen{$dependson} = 1;
    }
}

# The list of valid directions. Some are not proposed in the dropdrown
# menu despite the fact that they are valid.
my @valid_rankdirs = ('LR', 'RL', 'TB', 'BT');

my $rankdir = $cgi->param('rankdir') || 'TB';
# Make sure the submitted 'rankdir' value is valid.
if (lsearch(\@valid_rankdirs, $rankdir) < 0) {
    $rankdir = 'TB';
}

my $display = $cgi->param('display') || 'tree';
my $webdotdir = bz_locations()->{'webdotdir'};

if (!defined $cgi->param('id') && $display ne 'doall') {
    ThrowCodeError("missing_bug_id");
}

my ($fh, $filename) = File::Temp::tempfile("XXXXXXXXXX",
                                           SUFFIX => '.dot',
                                           DIR => $webdotdir);
my $urlbase = Bugzilla->params->{'urlbase'};

print $fh "digraph G {";
print $fh qq{
graph [URL="${urlbase}query.cgi", rankdir=$rankdir]
node [URL="${urlbase}show_bug.cgi?id=\\N", style=filled, color=lightgrey]
};

my %baselist;

if ($display eq 'doall') {
    my $dependencies = $dbh->selectall_arrayref(
                           "SELECT blocked, dependson FROM dependencies");

    foreach my $dependency (@$dependencies) {
        my ($blocked, $dependson) = @$dependency;
        AddLink($blocked, $dependson, $fh);
    }
} else {
    foreach my $i (split('[\s,]+', $cgi->param('id'))) {
        ValidateBugID($i);
        $baselist{$i} = 1;
    }

    my @stack = keys(%baselist);

    if ($display eq 'web') {
        my $sth = $dbh->prepare(q{SELECT blocked, dependson
                                    FROM dependencies
                                   WHERE blocked = ? OR dependson = ?});

        foreach my $id (@stack) {
            my $dependencies = $dbh->selectall_arrayref($sth, undef, ($id, $id));
            foreach my $dependency (@$dependencies) {
                my ($blocked, $dependson) = @$dependency;
                if ($blocked != $id && !exists $seen{$blocked}) {
                    push @stack, $blocked;
                }
                if ($dependson != $id && !exists $seen{$dependson}) {
                    push @stack, $dependson;
                }
                AddLink($blocked, $dependson, $fh);
            }
        }
    }
    # This is the default: a tree instead of a spider web.
    else {
        my @blocker_stack = @stack;
        foreach my $id (@blocker_stack) {
            my $blocker_ids = Bugzilla::Bug::EmitDependList('blocked', 'dependson', $id);
            foreach my $blocker_id (@$blocker_ids) {
                push(@blocker_stack, $blocker_id) unless $seen{$blocker_id};
                AddLink($id, $blocker_id, $fh);
            }
        }
        my @dependent_stack = @stack;
        foreach my $id (@dependent_stack) {
            my $dep_bug_ids = Bugzilla::Bug::EmitDependList('dependson', 'blocked', $id);
            foreach my $dep_bug_id (@$dep_bug_ids) {
                push(@dependent_stack, $dep_bug_id) unless $seen{$dep_bug_id};
                AddLink($dep_bug_id, $id, $fh);
            }
        }
    }

    foreach my $k (keys(%baselist)) {
        $seen{$k} = 1;
    }
}

my $sth = $dbh->prepare(
              q{SELECT bug_status, resolution, short_desc
                  FROM bugs
                 WHERE bugs.bug_id = ?});
foreach my $k (keys(%seen)) {
    # Retrieve bug information from the database
    my ($stat, $resolution, $summary) = $dbh->selectrow_array($sth, undef, $k);
    $stat ||= 'NEW';
    $resolution ||= '';
    $summary ||= '';

    # Resolution and summary are shown only if user can see the bug
    if (!Bugzilla->user->can_see_bug($k)) {
        $resolution = $summary = '';
    }

    $vars->{'short_desc'} = $summary if ($k eq $cgi->param('id'));

    my @params;

    if ($summary ne "" && $cgi->param('showsummary')) {
        $summary =~ s/([\\\"])/\\$1/g;
        push(@params, qq{label="$k\\n$summary"});
    }

    if (exists $baselist{$k}) {
        push(@params, "shape=box");
    }

    if (is_open_state($stat)) {
        push(@params, "color=green");
    }

    if (@params) {
        print $fh "$k [" . join(',', @params) . "]\n";
    } else {
        print $fh "$k\n";
    }

    # Push the bug tooltip texts into a global hash so that 
    # CreateImagemap sub (used with local dot installations) can
    # use them later on.
    $bugtitles{$k} = trim("$stat $resolution");

    # Show the bug summary in tooltips only if not shown on 
    # the graph and it is non-empty (the user can see the bug)
    if (!$cgi->param('showsummary') && $summary ne "") {
        $bugtitles{$k} .= " - $summary";
    }
}


print $fh "}\n";
close $fh;

chmod 0777, $filename;

my $webdotbase = Bugzilla->params->{'webdotbase'};

if ($webdotbase =~ /^https?:/) {
     # Remote dot server. We don't hardcode 'urlbase' here in case
     # 'sslbase' is in use.
     $webdotbase =~ s/%([a-z]*)%/Bugzilla->params->{$1}/g;
     my $url = $webdotbase . $filename;
     $vars->{'image_url'} = $url . ".gif";
     $vars->{'map_url'} = $url . ".map";
} else {
    # Local dot installation

    # First, generate the png image file from the .dot source

    my ($pngfh, $pngfilename) = File::Temp::tempfile("XXXXXXXXXX",
                                                     SUFFIX => '.png',
                                                     DIR => $webdotdir);
    binmode $pngfh;
    open(DOT, "\"$webdotbase\" -Tpng $filename|");
    binmode DOT;
    print $pngfh $_ while <DOT>;
    close DOT;
    close $pngfh;
    
    # On Windows $pngfilename will contain \ instead of /
    $pngfilename =~ s|\\|/|g if $^O eq 'MSWin32';

    # Under mod_perl, pngfilename will have an absolute path, and we
    # need to make that into a relative path.
    my $cgi_root = bz_locations()->{cgi_path};
    $pngfilename =~ s/^\Q$cgi_root\E//;
    
    $vars->{'image_url'} = $pngfilename;

    # Then, generate a imagemap datafile that contains the corner data
    # for drawn bug objects. Pass it on to CreateImagemap that
    # turns this monster into html.

    my ($mapfh, $mapfilename) = File::Temp::tempfile("XXXXXXXXXX",
                                                     SUFFIX => '.map',
                                                     DIR => $webdotdir);
    binmode $mapfh;
    open(DOT, "\"$webdotbase\" -Tismap $filename|");
    binmode DOT;
    print $mapfh $_ while <DOT>;
    close DOT;
    close $mapfh;
    $vars->{'image_map'} = CreateImagemap($mapfilename);
}

# Cleanup any old .dot files created from previous runs.
my $since = time() - 24 * 60 * 60;
# Can't use glob, since even calling that fails taint checks for perl < 5.6
opendir(DIR, $webdotdir);
my @files = grep { /\.dot$|\.png$|\.map$/ && -f "$webdotdir/$_" } readdir(DIR);
closedir DIR;
foreach my $f (@files)
{
    $f = "$webdotdir/$f";
    # Here we are deleting all old files. All entries are from the
    # $webdot directory. Since we're deleting the file (not following
    # symlinks), this can't escape to delete anything it shouldn't
    # (unless someone moves the location of $webdotdir, of course)
    trick_taint($f);
    if (file_mod_time($f) < $since) {
        unlink $f;
    }
}

# Make sure we only include valid integers (protects us from XSS attacks).
my @bugs = grep(detaint_natural($_), split(/[\s,]+/, $cgi->param('id')));
$vars->{'bug_id'} = join(', ', @bugs);
$vars->{'multiple_bugs'} = ($cgi->param('id') =~ /[ ,]/);
$vars->{'display'} = $display;
$vars->{'rankdir'} = $rankdir;
$vars->{'showsummary'} = $cgi->param('showsummary');

# Generate and return the UI (HTML page) from the appropriate template.
print $cgi->header();
$template->process("bug/dependency-graph.html.tmpl", $vars)
  || ThrowTemplateError($template->error());