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# -*- 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): Gervase Markham <gerv@gerv.net>
use strict;
use lib ".";
# This module implements a series - a set of data to be plotted on a chart.
#
# This Series is in the database if and only if self->{'series_id'} is defined.
# Note that the series being in the database does not mean that the fields of
# this object are the same as the DB entries, as the object may have been
# altered.
package Bugzilla::Series;
use Bugzilla;
use Bugzilla::Util;
use Bugzilla::User;
use constant PUBLIC_USER_ID => 0;
sub new {
my $invocant = shift;
my $class = ref($invocant) || $invocant;
# Create a ref to an empty hash and bless it
my $self = {};
bless($self, $class);
my $arg_count = scalar(@_);
if ($arg_count == 1) {
if (ref($_[0])) {
# We've been given a CGI object to create a new Series from.
$self->initFromCGI($_[0]);
}
else {
# We've been given a series_id, which should represent an existing
# Series.
$self->initFromDatabase($_[0]);
}
}
elsif ($arg_count >= 6 && $arg_count <= 8) {
# We've been given a load of parameters to create a new Series from.
$self->initFromParameters(@_);
}
else {
die("Bad parameters passed in - invalid number of args: $arg_count");
}
return $self;
}
sub initFromDatabase {
my $self = shift;
my $series_id = shift;
&::detaint_natural($series_id)
|| &::ThrowCodeError("invalid_series_id", { 'series_id' => $series_id });
my $dbh = Bugzilla->dbh;
my @series = $dbh->selectrow_array("SELECT series.series_id, cc1.name, " .
"cc2.name, series.name, series.creator, series.frequency, " .
"series.query " .
"FROM series " .
"LEFT JOIN series_categories AS cc1 " .
" ON series.category = cc1.category_id " .
"LEFT JOIN series_categories AS cc2 " .
" ON series.subcategory = cc2.category_id " .
"WHERE series.series_id = $series_id");
if (@series) {
# Note that we calculate $self->{'public'} ourselves instead of passing
# it as the last parameter in @series; this is because isSubscribed()
# requires the rest of the object to be set up correctly.
$self->initFromParameters(@series);
$self->{'public'} = $self->isSubscribed(PUBLIC_USER_ID);
}
else {
&::ThrowCodeError("invalid_series_id", { 'series_id' => $series_id });
}
}
sub initFromParameters {
# Pass undef as the first parameter if you are creating a new series.
my $self = shift;
($self->{'series_id'}, $self->{'category'}, $self->{'subcategory'},
$self->{'name'}, $self->{'creator'}, $self->{'frequency'},
$self->{'query'}, $self->{'public'}) = @_;
}
sub initFromCGI {
my $self = shift;
my $cgi = shift;
$self->{'series_id'} = $cgi->param('series_id') || undef;
if (defined($self->{'series_id'})) {
detaint_natural($self->{'series_id'})
|| &::ThrowCodeError("invalid_series_id",
{ 'series_id' => $self->{'series_id'} });
}
$self->{'category'} = $cgi->param('category')
|| $cgi->param('newcategory')
|| &::ThrowUserError("missing_category");
$self->{'subcategory'} = $cgi->param('subcategory')
|| $cgi->param('newsubcategory')
|| &::ThrowUserError("missing_subcategory");
$self->{'name'} = $cgi->param('name')
|| &::ThrowUserError("missing_name");
$self->{'creator'} = Bugzilla->user->id;
$self->{'frequency'} = $cgi->param('frequency');
detaint_natural($self->{'frequency'})
|| &::ThrowUserError("missing_frequency");
$self->{'query'} = $cgi->canonicalise_query("format", "ctype", "action",
"category", "subcategory", "name",
"frequency", "public", "query_format");
$self->{'public'} = $cgi->param('public') ? 1 : 0;
}
sub writeToDatabase {
my $self = shift;
# Lock some tables
my $dbh = Bugzilla->dbh;
$dbh->do("LOCK TABLES series_categories WRITE, series WRITE, " .
"user_series_map WRITE");
my $category_id = getCategoryID($self->{'category'});
my $subcategory_id = getCategoryID($self->{'subcategory'});
# Is this already in the database?
if ($self->existsInDatabase()) {
# Update existing series
my $dbh = Bugzilla->dbh;
$dbh->do("UPDATE series SET " .
"category = ?, subcategory = ?," .
"name = ?, frequency = ? " .
"WHERE series_id = ?", undef,
$category_id, $subcategory_id, $self->{'name'},
$self->{'frequency'}, $self->{'series_id'});
}
else {
# Insert the new series into the series table
trick_taint($self->{'query'});
$dbh->do("INSERT INTO series (creator, category, subcategory, " .
"name, frequency, query) VALUES ($self->{'creator'}, " .
"$category_id, $subcategory_id, " .
$dbh->quote($self->{'name'}) . ", $self->{'frequency'}," .
$dbh->quote($self->{'query'}) . ")");
# Retrieve series_id
$self->{'series_id'} = $dbh->selectrow_array("SELECT MAX(series_id) " .
"FROM series");
$self->{'series_id'}
|| &::ThrowCodeError("missing_series_id", { 'series' => $self });
# Subscribe creator to the newly-created series.
$self->subscribe($self->{'creator'});
}
# Update publicness by changing subscription
if ($self->{'public'}) {
$self->subscribe(PUBLIC_USER_ID);
}
else {
$self->unsubscribe(PUBLIC_USER_ID);
}
$dbh->do("UNLOCK TABLES");
}
# Check whether a series with this name, category and subcategory exists in
# the DB and, if so, sets series_id to its series_id.
sub existsInDatabase {
my $self = shift;
my $dbh = Bugzilla->dbh;
my $category_id = getCategoryID($self->{'category'});
my $subcategory_id = getCategoryID($self->{'subcategory'});
trick_taint($self->{'name'});
$self->{'series_id'} = $dbh->selectrow_array("SELECT series_id " .
"FROM series WHERE category = $category_id " .
"AND subcategory = $subcategory_id AND name = " .
$dbh->quote($self->{'name'}));
return(defined($self->{'series_id'}));
}
# Get a category or subcategory IDs, creating the category if it doesn't exist.
sub getCategoryID {
my ($category) = @_;
my $category_id;
my $dbh = Bugzilla->dbh;
# This seems for the best idiom for "Do A. Then maybe do B and A again."
while (1) {
# We are quoting this to put it in the DB, so we can remove taint
trick_taint($category);
$category_id = $dbh->selectrow_array("SELECT category_id " .
"from series_categories " .
"WHERE name =" . $dbh->quote($category));
last if $category_id;
$dbh->do("INSERT INTO series_categories (name) " .
"VALUES (" . $dbh->quote($category) . ")");
}
return $category_id;
}
sub subscribe {
my $self = shift;
my $userid = shift;
if (!$self->isSubscribed($userid)) {
# Subscribe current user to series_id
my $dbh = Bugzilla->dbh;
$dbh->do("INSERT INTO user_series_map " .
"VALUES($userid, $self->{'series_id'})");
}
}
sub unsubscribe {
my $self = shift;
my $userid = shift;
if ($self->isSubscribed($userid)) {
# Remove current user's subscription to series_id
my $dbh = Bugzilla->dbh;
$dbh->do("DELETE FROM user_series_map " .
"WHERE user_id = $userid AND series_id = $self->{'series_id'}");
}
}
sub isSubscribed {
my $self = shift;
my $userid = shift;
my $dbh = Bugzilla->dbh;
my $issubscribed = $dbh->selectrow_array("SELECT 1 FROM user_series_map " .
"WHERE user_id = $userid " .
"AND series_id = $self->{'series_id'}");
return $issubscribed;
}
1;
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