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Package simplesamlphp-module-aggregator2
Short Description A SAML 2.0 metadata aggregator for SimpleSAMLphp.
License LGPL-2.1
Homepage http://simplesamlphp.org
Informations about the package simplesamlphp-module-aggregator2
Aggregator 2
This is a SimpleSAMLphp module for metadata aggregation. It is designed to preserve most of the common metadata items, and it also attempts to preserve unknown elements. Metadata sources are parsed and rebuilt, so small differences between the original sources and the metadata generated may occur. More specifically:
- Signatures will be removed from every signed metadata source.
- All sources will be wrapped up in an EntitiesDescriptor element.
Note: This aggregator works only with XML metadata, and does its work independently of other parts of SimpleSAMLphp, such as the metarefresh module.
Installation
Once you have installed SimpleSAMLphp, installing this module is very simple. Just execute the following command in the root of your SimpleSAMLphp installation:
where dev-master
instructs Composer to install the master
branch from the Git
repository. See the releases available if you want to use a stable version
of the module.
To use this module, enable the aggregator2 module: in config.php
, search
for the module.enable
key and set aggregator2
to true:
Configuration
This module is configured through the config/module_aggregator2.php
configuration file.
An example file is available in modules/aggregator2/config-templates/
:
The configuration file contains one or more aggregators in the configuration array. The index for each item in the configuration array gives the identifier of the aggregator.
Aggregator entry configuration
The aggregator can be configured with the following options:
-
sources
: Array which describes a source from which we should download metadata. -
cron.tag
: Can be used to run periodical updates. It will only be useful when you have metadata caching enabled. -
cache.directory
: The path to a directory where the aggregator will cache downloaded and generated metadata. This directory must be writable by the web server. -
cache.generated
: The number of seconds the generated metadata will be cached for.Note: generated metadata will not be cached if this option is unset.
-
valid.length
: The number of seconds the generated metadata should be valid for. This is used to set thevalidUntil
attribute on the generated metadata. Defaults to one week.Note: The value of the
cache.generated
option must be smaller than the value here, otherwise you would end up returning outdated metadata. -
ssl.cafile
: This option enables validation of the server certificate when fetching metadata over HTTPS. It must be a path pointing to a PEM file which contains one or more valid CA certificates. The path can be either absolute or relative to thecert
directory.Note: This option can be overridden for each metadata source.
-
sign.privatekey
: The private key that should be used to sign the resulting metadata, in PEM format. The path to the private key can be either absolute or relative to thecert
directory. Skip this option or set it toNULL
if you don't want to sign the generated metadata. -
sign.privatekey_pass
: The password used to encrypt the private key. If this option is unset, the private key is assumed to be unencrypted. -
sign.certificate
: The certificate that contains the public key corresponding to the private key, in PEM format. The path to the certificate can be either absolute or relative to thecert
directory.Note: This certificate will be included in the generated metadata.
-
sign.algorithm
: The algorithm that should be used to sign the resulting metadata. The following algorithms are supported:-
http://www.w3.org/2000/09/xmldsig#rsa-sha1
-
http://www.w3.org/2001/04/xmldsig-more#rsa-sha256
-
http://www.w3.org/2001/04/xmldsig-more#rsa-sha384
http://www.w3.org/2001/04/xmldsig-more#rsa-sha512
Note: Defaults to
http://www.w3.org/2000/09/xmldsig#rsa-sha256.
. For backwards compatibility it is possible to set it tohttp://www.w3.org/2000/09/xmldsig#rsa-sha1
, however, it is recommended to use another algorithm as SHA1 is considered broken. -
-
RegistrationInfo
: Allows to specify information about the registrar of the generated metadata. Please refer to the MDRPI extension document for further information. -
exclude
: Allows to exclude one or more entities from the generated metadata, represented by their entity IDs. Can be either a string with the entity ID of a single entity, or an array of strings with all the entity IDs to exclude from the result.Note: this option will not exclude the entities from the cached metadata sources. It will only act as a default configuration for the generation of the metadata aggregate, and therefore can be overridden per request.
-
filter
: One or more sets representing the types of entities that should be included in the generated metadata. Filtering will be performed depending on the role of the entity, as well as the protocols it supports. Can be either a string with the set of entities desired, or an array of strings with all the different sets to filter by. The following sets are available:-
saml2
: all the entities that support the SAML 2.0 protocol. -
saml20-idp
: all the identity providers that support the SAML 2.0 protocol. -
saml20-sp
: all the service providers that support the SAML 2.0 protocol. saml20-aa
: all the attribute authorities that support the SAML 2.0 protocol.
Note: this option will not filter the entities in the cached metadata sources. It will only act as a default configuration for the generation of the metadata aggregate, and therefore can be overridden per request.
-
Aggregator source configuration
-
url
: The URL the metadata should be fetched from. -
ssl.cafile
: This option enables validation of the server certificate when fetching metadata over HTTPS. It must be a path pointing to a PEM file which contains one or more valid CA certificates. The path can be either absolute or relative to thecert
directory.Note: This option overrides the option with the same name in the root configuration for the an aggregator.
-
cert
: The certificate that should be used to check the signature of this metadata document, in PEM format. The path to the certificate can be either absolute or relative to thecert
directory.Note: This cannot be a CA certificate. Validation against CA certificates (PKI) is not supported.
Retrieving aggregated metadata
You will find a link to the aggregator2 module in the Federation tab of SimpleSAMLphp's web interface. There you will be able to see a list of all the metadata aggregates you have configured, and see or download them in different formats.
In general, metadata aggregates can be downloaded from the following location:
http://<YOUR HOST>/simplesaml/modules.php/aggregator2/get?id=<aggregator-id>
where the aggregator id is the identifier you used as an index for the aggregator configuration array. Additionally, you can use the following parameters to customize the resulting metadata aggregate:
-
exclude
: Allows to exclude one or more entities from the generated metadata, represented by their entity IDs. If you need to specify more than one entity, use a comma-separated list of entity IDs. filter
: Allows to filter by sets specifying the type of entities or the protocols they support. If you need to specify more than one set, use a comma-separated list. See the configuration option with the same name to get a list of all the sets supported.
Asynchronous metadata updates
By default, the aggregator2
module will update the metadata upon receiving a
request. For performance reasons, it is recommended to run the updates
asynchronously. By doing this, the aggregated metadata will be generated in
the background.
To enable this, you must configure a cache directory with the cache.directory
option. This directory must be writable by the web server. You can then enable
caching of generated metadata by setting the cache.generated
option to the
number of seconds the metadata should be cached.
You will now have a configuration that caches both downloaded and generated
metadata. However, it will still update the metadata when the user accesses
the aggregator endpoint. To update the generated metadata in the background,
you must add a cron.tag
option. This option must reference a cron tag entry
configured in module_cron.php
. Once this is done, your aggregated metadata
will be updated every time that cron entry is executed.
All versions of simplesamlphp-module-aggregator2 with dependencies
simplesamlphp/composer-module-installer Version ^1.3.2
simplesamlphp/simplesamlphp Version ^2.0.0-rc2