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openldap 授予组对子树的写访问权限

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openldap 授予组对子树的写访问权限

我有

dn: ou=people,dc=example,dc=com
objectClass: organizationalUnit
ou: people

及其管理员组：

dn: cn=people-admins,ou=groups,dc=example,dc=com
objectClass: groupOfUniqueNames
cn: admins of people group
uniqueMember: uid=admin1,ou=people,dc=example,dc=com

我添加了这样的规则以允许people-admins添加/删除/修改people组内的用户

dn: olcDatabase={1}hdb,cn=config
changetype: modify
delete: olcAccess
-
add: olcAccess
olcAccess: to attrs=userPassword,shadowLastChange by self write by dn="cn=admin,dc=example,dc=com" write by anonymous auth by * none
olcAccess: to dn.one="ou=people,dc=example,dc=com" by group.exact=cn=people-admins,ou=groups,dc=example,dc=com write by self write by dn="cn=admin,dc=example,dc=com" write by * none
olcAccess: to dn.base="ou=people,dc=example,dc=com" by group.exact=cn=people-admins,ou=groups,dc=example,dc=com write by self write by dn="cn=admin,dc=example,dc=com" write by * none
olcAccess: to dn.children="ou=people,dc=example,dc=com" by group.exact=cn=people-admins,ou=groups,dc=example,dc=com write by self write by dn="cn=admin,dc=example,dc=com" write by * none
olcAccess: to dn.subtree="ou=people,dc=example,dc=com" by group.exact=cn=people-admins,ou=groups,dc=example,dc=com write by self write by dn="cn=admin,dc=example,dc=com" write by * none
olcAccess: to * by self write by dn="cn=admin,dc=example,dc=com" write by * none

然后我尝试people使用 admin1 的凭据将新用户添加到组，并得到以下信息：

ldapadd -x -H ldap://127.0.0.1:3000/  -D "uid=admin1,ou=people,dc=example,dc=com" -W
dn: uid=test1,ou=people,dc=example,dc=com
objectClass: inetOrgPerson
uid: test1
sn: test
givenName: test1
cn: test test1
displayName: Test1
userPassword: test1
adding new entry "uid=test1,ou=people,dc=example,dc=com"
ldap_add: Insufficient access (50)
        additional info: no write access to parent

这里类似的问题，但是它得到了错误的答案，因为dn.entry在openldap中不存在。

答案1

问题是group.exact不适用于groupOfUniqueNames。我通过更改此规则解决了它：

by group.exact=cn=people-admins,ou=groups,dc=example,dc=com write

这条规则：

by group/groupOfUniqueNames/uniqueMember=cn=people-admins,ou=groups,dc=example,dc=com write

答案2

如果您刚刚开始，我建议切换到使用groupOfNames而不是groupOfUniqueNames。

大多数与 OpenLDAP 交互以获得组成员资格的系统默认需要 groupOfNames，包括 OpenLDAP 本身。虽然它们通常可以修改为使用 groupOfUniqueNames/uniqueMember（例如sssd-ldap ldap_group_member或您自己在 OpenLDAP 的 olcAccess 中使用），这样就无需调整默认值。

存在差异distinguishedNameMatch，由member和使用uniqueMemberMatch使用uniqueMember，但前者通常就足够了。

$ ldapadd <<EOF
dn: cn=testgroup,ou=groups,dc=example,dc=com
> objectclass: groupofnames
> member: uid=testuser,ou=people,dc=example,dc=com
> member: uid=testuser,ou=people,dc=example,dc=com
> EOF
SASL/GSSAPI authentication started
SASL username: [email protected]
SASL SSF: 56
SASL data security layer installed.
adding new entry "cn=testgroup,ou=groups,dc=example,dc=com"
ldap_add: Type or value exists (20)
    additional info: member: value #0 provided more than once



$ ldapsearch cn=testgroup
dn: cn=testgroup,ou=groups,dc=example,dc=com
objectClass: groupOfNames
objectClass: posixGroup
cn: testgroup
gidNumber: 12345
member: uid=testuser,ou=people,dc=example,dc=com

$ ldapmodify <<EOF
dn: cn=testgroup,ou=groups,dc=example,dc=com
add: member
member: uid=testuser,ou=people,dc=example,dc=com
EOF

SASL/GSSAPI authentication started
SASL username: [email protected]
SASL SSF: 56
SASL data security layer installed.
modifying entry "cn=testgroup,ou=groups,dc=example,dc=com"
ldap_modify: Type or value exists (20)
    additional info: modify/add: member: value #0 already exists

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