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BE: Auth: Support LDAP nested groups #391

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May 19, 2024
Merged

BE: Auth: Support LDAP nested groups #391

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44 changes: 7 additions & 37 deletions api/src/main/java/io/kafbat/ui/service/rbac/extractor/RbacLdapAuthoritiesExtractor.java
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Original file line number Diff line number Diff line change
@@ -1,11 +1,8 @@
package io.kafbat.ui.service.rbac.extractor;

import io.kafbat.ui.config.auth.LdapProperties;
import io.kafbat.ui.model.rbac.Role;
import io.kafbat.ui.model.rbac.provider.Provider;
import io.kafbat.ui.service.rbac.AccessControlService;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
import lombok.extern.slf4j.Slf4j;
Expand All @@ -14,25 +11,26 @@
import org.springframework.ldap.core.support.BaseLdapPathContextSource;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.ldap.userdetails.DefaultLdapAuthoritiesPopulator;
import org.springframework.util.Assert;
import org.springframework.security.ldap.userdetails.NestedLdapAuthoritiesPopulator;

@Slf4j
public class RbacLdapAuthoritiesExtractor extends DefaultLdapAuthoritiesPopulator {
public class RbacLdapAuthoritiesExtractor extends NestedLdapAuthoritiesPopulator {

private final AccessControlService acs;
private final LdapProperties props;

public RbacLdapAuthoritiesExtractor(ApplicationContext context,
BaseLdapPathContextSource contextSource, String groupFilterSearchBase) {
super(contextSource, groupFilterSearchBase);
this.acs = context.getBean(AccessControlService.class);
this.props = context.getBean(LdapProperties.class);
}

@Override
protected Set<GrantedAuthority> getAdditionalRoles(DirContextOperations user, String username) {
var ldapGroups = getRoles(user.getNameInNamespace(), username);
var ldapGroups = super.getGroupMembershipRoles(user.getNameInNamespace(), username)
.stream()
.map(GrantedAuthority::getAuthority)
.peek(group -> log.trace("Found LDAP group [{}] for user [{}]", group, username))
.collect(Collectors.toSet());

return acs.getRoles()
.stream()
Expand All @@ -47,32 +45,4 @@ protected Set<GrantedAuthority> getAdditionalRoles(DirContextOperations user, St
.map(SimpleGrantedAuthority::new)
.collect(Collectors.toSet());
}

private Set<String> getRoles(String userDn, String username) {
var groupSearchBase = props.getGroupFilterSearchBase();
Assert.notNull(groupSearchBase, "groupSearchBase is empty");

var groupRoleAttribute = props.getGroupRoleAttribute();
if (groupRoleAttribute == null) {

groupRoleAttribute = "cn";
}

log.trace(
"Searching for roles for user [{}] with DN [{}], groupRoleAttribute [{}] and filter [{}] in search base [{}]",
username, userDn, groupRoleAttribute, getGroupSearchFilter(), groupSearchBase);

var ldapTemplate = getLdapTemplate();
ldapTemplate.setIgnoreNameNotFoundException(true);

Set<Map<String, List<String>>> userRoles = ldapTemplate.searchForMultipleAttributeValues(
groupSearchBase, getGroupSearchFilter(), new String[] {userDn, username},
new String[] {groupRoleAttribute});

return userRoles.stream()
.map(record -> record.get(getGroupRoleAttribute()).get(0))
.peek(group -> log.trace("Found LDAP group [{}] for user [{}]", group, username))
.collect(Collectors.toSet());
}

}
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