jammy (3) CGI::Application::Plugin::Authorization::Driver::DBI.3pm.gz
NAME
CGI::Application::Plugin::Authorization::Driver::DBI - DBI Authorization driver
SYNOPSIS
use base qw(CGI::Application);
use CGI::Application::Plugin::Authorization;
# Simple task based authentication
__PACKAGE__->authz->config(
DRIVER => [ 'DBI',
TABLES => ['account', 'task'],
JOIN_ON => 'account.id = task.accountid',
USERNAME => 'account.name',
CONSTRAINTS => {
'task.name' => '__PARAM_1__',
}
],
);
if ($self->authz->authorize('editfoo') {
# User is allowed access if it can 'editfoo'
}
DESCRIPTION
This Authorization driver uses the DBI module to allow you to gather authorization information from any
database for which there is a DBD module. You can either provide an active database handle, or provide
the parameters necessary to connect to the database.
DBH
The DBI database handle to use. Defaults to "$self->dbh()", which is provided and configured through
CGI::Application::Plugin::DBH
When describing the database structure you have two options:
TABLE(S), JOIN_ON, USERNAME and CONSTRAINTS:
Use these values to describe the table structure, and an sql statement will be automatically
generated to query the database
SQL:
just provide one SQL parameters that gives a complete sql statement that will be used to query the
database
Following is a description of all the available parameters:
TABLE(S)
Provide either a single table name, or an array of table names. You can give the table names aliases
which can be referenced in later columns.
TABLE => 'group',
- or -
TABLES => ['user U', 'group G'],
JOIN_ON
If you have specified multiple tables, then you need to provide an SQL expression that can be used to
join those tables.
JOIN_ON => 'user.id = group.userid',
- or -
JOIN_ON => 'U.id = G.userid',
USERNAME
This should be set to the column name that contains the username. This column will be compared against
the currently logged in user.
USERNAME => 'name'
- or -
USERNAME => 'U.name'
CONSTRAINTS
Constraints are used to restrict the database query against the options that are passed to the
"authorize" method. In the common case, you will check these parameters against a group permission
table, although there is no limit to the number of parameters that can be used. Each constraint can be
set to a static value, or it can be set to '__PARAM_n__' where 'n' is the position of the parameter that
is passed in to the "authorize" method.
CONSTRAINTS => {
'user.active' => 't',
'group.type' => '__PARAM_1__',
'group.name' => '__PARAM_2__',
}
SQL
If you need to perform a complex query that can not be defined by the above syntax, then you can provide
your own SQL statement where the first placeholder is used to fill in the username, and the rest of the
placeholders are filled in using the parameters passed to the authorize method.
SQL => 'SELECT count(*)
FROM account
LEFT JOIN ip ON (account.id = ip.accountid)
LEFT JOIN task ON (account.id = task.accountid)
WHERE account.name = ?
AND (ip.address >> inet ? OR task.name = ?)
',
EXAMPLE
#
# Example table structure (for PostgreSQL):
#
CREATE TABLE account (
id SERIAL NOT NULL PRIMARY KEY,
name VARCHAR(50) NOT NULL
);
CREATE TABLE task (
id SERIAL NOT NULL PRIMARY KEY,
accountid INTEGER NOT NULL REFERENCES account(id),
name VARCHAR(50) NOT NULL
);
CREATE TABLE ip (
id SERIAL NOT NULL PRIMARY KEY,
accountid INTEGER NOT NULL REFERENCES account(id),
address INET NOT NULL
);
INSERT INTO account (name) VALUES ('testuser');
INSERT INTO task (accountid, name) VALUES (1, 'editfoo');
INSERT INTO ip (accountid, address) VALUES (1, '192.168.1.0/24');
# Simple task based authentication
__PACKAGE__->authz->config(
DRIVER => [ 'DBI',
# the handle comes from $self->dbh, via the "DBH" plugin.
TABLES => ['account', 'task'],
JOIN_ON => 'account.id = task.accountid',
USERNAME => 'account.name',
CONSTRAINTS => {
'task.name' => '__PARAM_1__',
'task.active' => 't'
}
],
);
if ($self->authz->authorize('editfoo') {
# User is allowed access if they can 'editfoo'
}
# IP address configuration
__PACKAGE__->authz('byIP')->config(
DRIVER => [ 'DBI',
SQL => 'SELECT count(*)
FROM account JOIN ip ON (account.id = ip.accountid)
WHERE account.name = ?
AND ip.address >> inet ?
',
],
);
if ($self->authz('byIP')->authorize($ENV{REMOTE_ADDR}) {
# User is allowed to connect from this address
}
# both together in one test
# IP address configuration
__PACKAGE__->authz->config(
DRIVER => [ 'DBI',
SQL => 'SELECT count(*)
FROM account
JOIN ip ON (account.id = ip.accountid)
JOIN task ON (account.id = task.accountid)
WHERE account.name = ?
AND task.name = ?
AND ip.address >> inet ?
',
],
);
if ($self->authz->authorize('editfoo', $ENV{REMOTE_ADDR}) {
# User is allowed to connect from this address if they can
# also 'editfoo'
}
METHODS
authorize_user
This method accepts a username followed by a list of parameters and will return true if the configured
query returns at least one row based on the given parameters.
SEE ALSO
CGI::Application::Plugin::Authorization::Driver, CGI::Application::Plugin::Authorization, perl(1)
LICENCE AND COPYRIGHT
Copyright (c) 2005, SiteSuite. All rights reserved.
This module is free software; you can redistribute it and/or modify it under the same terms as Perl
itself.
DISCLAIMER OF WARRANTY
BECAUSE THIS SOFTWARE IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR THE SOFTWARE, TO THE EXTENT
PERMITTED BY APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER
PARTIES PROVIDE THE SOFTWARE "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE SOFTWARE IS WITH YOU. SHOULD THE
SOFTWARE PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR, OR CORRECTION.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY COPYRIGHT HOLDER, OR ANY
OTHER PARTY WHO MAY MODIFY AND/OR REDISTRIBUTE THE SOFTWARE AS PERMITTED BY THE ABOVE LICENCE, BE LIABLE
TO YOU FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT OF
THE USE OR INABILITY TO USE THE SOFTWARE (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE SOFTWARE TO OPERATE
WITH ANY OTHER SOFTWARE), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
DAMAGES.
perl v5.30.3 2020CGI::Application::Plugin::Authorization::Driver::DBI(3pm)