An LDAP3 auth provider for Synapse
Project description
Allows synapse to use LDAP as a password provider.
This allows users to log in to synapse with their username and password from an LDAP server. There is also ma1sd (3rd party) that offers more fully-featured integration.
Installation
Included as standard in the deb packages and docker images from matrix.org.
- If you installed into a virtualenv:
Ensure pip is up-to-date: pip install -U pip.
Install the LDAP password provider: pip install matrix-synapse-ldap3.
For other installation mechanisms, see the documentation provided by the maintainer.
Usage
Example Synapse configuration:
modules:
- module: "ldap_auth_provider.LdapAuthProviderModule"
config:
enabled: true
uri: "ldap://ldap.example.com:389"
start_tls: true
base: "ou=users,dc=example,dc=com"
attributes:
uid: "cn"
mail: "mail"
name: "givenName"
#bind_dn:
#bind_password:
#filter: "(objectClass=posixAccount)"
# Additional options for TLS, can be any key from https://ldap3.readthedocs.io/en/latest/ssltls.html#the-tls-object
#tls_options:
# validate: true
# local_certificate_file: foo.crt
# local_private_key_file: bar.pem
# local_private_key_password: secret
If you would like to specify more than one LDAP server for HA, you can provide uri parameter with a list. Default HA strategy of ldap3.ServerPool is employed, so first available server is used.
modules:
- module: "ldap_auth_provider.LdapAuthProviderModule"
config:
enabled: true
uri:
- "ldap://ldap1.example.com:389"
- "ldap://ldap2.example.com:389"
start_tls: true
base: "ou=users,dc=example,dc=com"
attributes:
uid: "cn"
mail: "email"
name: "givenName"
#bind_dn:
#bind_password:
#filter: "(objectClass=posixAccount)"
#tls_options:
# validate: true
# local_certificate_file: foo.crt
# local_private_key_file: bar.pem
# local_private_key_password: secret
If you would like to enable login/registration via email, or givenName/email binding upon registration, you need to enable search mode. An example config in search mode is provided below:
modules:
- module: "ldap_auth_provider.LdapAuthProviderModule"
config:
enabled: true
mode: "search"
uri: "ldap://ldap.example.com:389"
start_tls: true
base: "ou=users,dc=example,dc=com"
attributes:
uid: "cn"
mail: "mail"
name: "givenName"
# Search auth if anonymous search not enabled
bind_dn: "cn=hacker,ou=svcaccts,dc=example,dc=com"
bind_password: "ch33kym0nk3y"
#filter: "(objectClass=posixAccount)"
#tls_options:
# validate: true
# local_certificate_file: foo.crt
# local_private_key_file: bar.pem
# local_private_key_password: secret
Alternatively you can also put the bind_password of your service user into its own file to not leak secrets into your configuration:
modules:
- module: "ldap_auth_provider.LdapAuthProviderModule"
config:
enabled: true
# all the other options you need
bind_password_file: "/var/secrets/synapse-ldap-bind-password"
Please note that every trailing \n in the password file will be stripped automatically.
Active Directory forest support
If the active_directory flag is set to true, an Active Directory forest will be searched for the login details. In this mode, the user enters their login details in one of the forms:
<login>/<domain>
<domain>\<login>
In either case, this will be mapped to the Matrix UID <login>/<domain> (The normal AD domain separators, @ and \, cannot be used in Matrix User Identifiers, so / is used instead.)
Let’s say you have several domains in the example.com forest:
modules:
- module: "ldap_auth_provider.LdapAuthProviderModule"
config:
enabled: true
mode: "search"
uri: "ldap://main.example.com:389"
base: "dc=example,dc=com"
# Must be true for this feature to work
active_directory: true
# Optional. Users from this domain may log in without specifying the domain part
default_domain: main.example.com
attributes:
uid: "userPrincipalName"
mail: "mail"
name: "givenName"
bind_dn: "cn=hacker,ou=svcaccts,dc=example,dc=com"
bind_password: "ch33kym0nk3y"
With this configuration the user can log in with either main\someuser, main.example.com\someuser, someuser/main.example.com or someuser.
Users of other domains in the example.com forest can log in with domain\login or login/domain.
Please note that userPrincipalName or a similar-looking LDAP attribute in the format login@domain must be used when the active_directory option is enabled.
Troubleshooting and Debugging
matrix-synapse-ldap3 logging is included in the Synapse homeserver log (typically homeserver.log). The LDAP plugin log level can be increased to DEBUG for troubleshooting and debugging by making the following modifications to your Synapse server’s logging configuration file:
Set the value for handlers.file.level to DEBUG:
handlers:
file:
# [...]
level: DEBUG
Add the following to the loggers section:
loggers:
# [...]
ldap3:
level: DEBUG
ldap_auth_provider:
level: DEBUG
Finally, restart your Synapse server for the changes to take effect:
synctl restart
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