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sftpgo-mirror/examples/ldapauth
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root 87751e562e Flesh out examples/ldapauth, specifically: 
Support 'virtual' users who have no homeDirectory, uidNumber or gidNumber.
Permit read-only access by a user named "anonymous", with any password.
Assume a conventional DIT with users under ou=people,dc=example,dc=com.
Read the LDAP bindPassword from a file (not baked into the code).
Log progress and problems to syslog.
2021-10-01 09:10:13 +02:00
..
go.mod minor doc fixes 2021-02-14 22:08:08 +01:00
go.sum minor doc fixes 2021-02-14 22:08:08 +01:00
main.go Flesh out examples/ldapauth, specifically: 2021-10-01 09:10:13 +02:00
README.md several doc fixes 2020-07-11 13:03:15 +02:00

README.md

LDAPAuth

This is an example for an external authentication program. It performs authentication against an LDAP server. It is tested against 389ds and can be used as starting point to authenticate using any LDAP server including Active Directory.

You need to change the LDAP connection parameters and the user search query to match your environment. You can build this example using the following command:

go build -ldflags "-s -w" -o ldapauth

This program assumes that the 389ds schema was extended to add support for public keys using the following ldif file placed in /etc/dirsrv/schema/98openssh-ldap.ldif:

dn: cn=schema
changetype: modify
add: attributetypes
attributetypes: ( 1.3.6.1.4.1.24552.500.1.1.1.13 NAME 'sshPublicKey' DESC 'MANDATORY: OpenSSH Public key' EQUALITY octetStringMatch SYNTAX 1.3.6.1.4.1.1466.115.121.1.40 )
-
add: objectclasses
objectClasses: ( 1.3.6.1.4.1.24552.500.1.1.2.0 NAME 'ldapPublicKey' SUP top AUXILIARY DESC 'MANDATORY: OpenSSH LPK objectclass' MUST ( uid ) MAY ( sshPublicKey ) )
-

dn: cn=sshpublickey,cn=default indexes,cn=config,cn=ldbm database,cn=plugins,cn=config
changetype: add
cn: sshpublickey
nsIndexType: eq
nsIndexType: pres
nsSystemIndex: false
objectClass: top
objectClass: nsIndex

dn: cn=sshpublickey_self_manage,ou=groups,dc=example,dc=com
changetype: add
objectClass: top
objectClass: groupofuniquenames
cn: sshpublickey_self_manage
description: Members of this group gain the ability to edit their own sshPublicKey field

dn: dc=example,dc=com
changetype: modify
add: aci
aci: (targetattr = "sshPublicKey") (version 3.0; acl "Allow members of sshpublickey_self_manage to edit their keys"; allow(write) (groupdn = "ldap:///cn=sshpublickey_self_manage,ou=groups,dc=example,dc=com" and userdn="ldap:///self" ); )
-

Please feel free to send pull requests to improve this example authentication program, thanks!