Feat: add LDAP custom mapper resource

docs/resources/ldap_custom_mapper.md

@@ -0,0 +1,74 @@
+---
+page_title: "keycloak_ldap_custom_mapper Resource"
+---
+
+# keycloak\_ldap\_custom\_mapper Resource
+
+Allows for creating and managing custom attribute mappers for Keycloak users federated via LDAP.
+
+The LDAP custom mapper is implemented and deployed into Keycloak as a custom provider. This resource allows to
+specify the custom id and custom implementation class of the self-implemented attribute mapper as well as additional
+properties via config map.
+
+The custom mapper should already be deployed into keycloak in order to be correctly configured.
+
+## Example Usage
+
+```hcl
+resource "keycloak_realm" "realm" {
+  realm   = "my-realm"
+  enabled = true
+}
+
+resource "keycloak_ldap_user_federation" "ldap_user_federation" {
+  name     = "openldap"
+  realm_id = keycloak_realm.realm.id
+
+  username_ldap_attribute = "cn"
+  rdn_ldap_attribute      = "cn"
+  uuid_ldap_attribute     = "entryDN"
+  user_object_classes     = [
+    "simpleSecurityObject",
+    "organizationalRole"
+  ]
+
+  connection_url  = "ldap://openldap"
+  users_dn        = "dc=example,dc=org"
+  bind_dn         = "cn=admin,dc=example,dc=org"
+  bind_credential = "admin"
+}
+
+resource "keycloak_ldap_custom_mapper" "custom_mapper" {
+	name                    = "custom-mapper"
+	realm_id                = keycloak_ldap_user_federation.openldap.realm_id
+	ldap_user_federation_id = keycloak_ldap_user_federation.openldap.id
+
+	provider_id             = "custom-provider-registered-in-keycloak"
+	provider_type           = "com.example.custom.ldap.mappers.CustomMapper"
+
+	config = {
+		"attribute.name"       = "name"
+		"attribute.value"      = "value"
+	}
+}
+```
+
+## Argument Reference
+
+- `realm_id` - (Required) The realm that this LDAP mapper will exist in.
+- `ldap_user_federation_id` - (Required) The ID of the LDAP user federation provider to attach this mapper to.
+- `name` - (Required) Display name of this mapper when displayed in the console.
+- `provider_id` - (Required) The id of the LDAP mapper implemented in MapperFactory.
+- `provider_type` - (Required) The fully-qualified Java class name of the custom LDAP mapper.
+- `config` - (Optional) A map with key / value pairs for configuring the LDAP mapper. The supported keys depend on the protocol mapper.
+
+## Import
+
+LDAP mappers can be imported using the format `{{realm_id}}/{{ldap_user_federation_id}}/{{ldap_mapper_id}}`.
+The ID of the LDAP user federation provider and the mapper can be found within the Keycloak GUI, and they are typically GUIDs.
+
+Example:
+
+```bash
+$ terraform import keycloak_ldap_custom_mapper.custom_mapper my-realm/af2a6ca3-e4d7-49c3-b08b-1b3c70b4b860/3d923ece-1a91-4bf7-adaf-3b82f2a12b67
+```

example/main.tf

@@ -426,6 +426,29 @@ resource "keycloak_ldap_full_name_mapper" "full_name_mapper" {
   read_only                = true
 }
 
+resource "keycloak_ldap_custom_mapper" "custom_mapper" {
+	name                    = "custom-mapper"
+	realm_id                = keycloak_ldap_user_federation.openldap.realm_id
+	ldap_user_federation_id = keycloak_ldap_user_federation.openldap.id
+
+	provider_id        		= "msad-user-account-control-mapper"
+	provider_type           = "org.keycloak.storage.ldap.mappers.LDAPStorageMapper"
+}
+
+resource "keycloak_ldap_custom_mapper" "custom_mapper_with_config" {
+	name                    = "custom-mapper-with-config"
+	realm_id                = keycloak_ldap_user_federation.openldap.realm_id
+	ldap_user_federation_id = keycloak_ldap_user_federation.openldap.id
+
+	provider_id             = "user-attribute-ldap-mapper"
+	provider_type           = "org.keycloak.storage.ldap.mappers.LDAPStorageMapper"
+	config                  = {
+		"user.model.attribute" = "username"
+		"ldap.attribute"       = "cn"
+	}
+}
+
+
 resource "keycloak_custom_user_federation" "custom" {
   name        = "custom1"
   realm_id    = "master"

keycloak/ldap_custom_mapper.go

@@ -0,0 +1,89 @@
+package keycloak
+
+import (
+	"context"
+	"fmt"
+)
+
+type LdapCustomMapper struct {
+	Id                   string
+	Name                 string
+	RealmId              string
+	LdapUserFederationId string
+	ProviderId           string
+	ProviderType         string
+	Config               map[string]string
+}
+
+func convertFromLdapCustomMapperToComponent(ldapCustomMapper *LdapCustomMapper) *component {
+	return &component{
+		Id:           ldapCustomMapper.Id,
+		Name:         ldapCustomMapper.Name,
+		ProviderId:   ldapCustomMapper.ProviderId,
+		ProviderType: ldapCustomMapper.ProviderType,
+		ParentId:     ldapCustomMapper.LdapUserFederationId,
+		Config:       convertToComponentConfig(ldapCustomMapper.Config),
+	}
+}
+
+func convertFromComponentToLdapCustomMapper(component *component, realmId string) (*LdapCustomMapper, error) {
+	return &LdapCustomMapper{
+		Id:                   component.Id,
+		Name:                 component.Name,
+		RealmId:              realmId,
+		LdapUserFederationId: component.ParentId,
+		ProviderId:           component.ProviderId,
+		ProviderType:         component.ProviderType,
+		Config:               convertFromComponentConfig(component.Config),
+	}, nil
+}
+
+func convertFromComponentConfig(originalMap map[string][]string) map[string]string {
+	convertedMap := make(map[string]string)
+
+	for key, values := range originalMap {
+		convertedMap[key] = values[0]
+	}
+
+	return convertedMap
+}
+
+func convertToComponentConfig(originalMap map[string]string) map[string][]string {
+	convertedMap := make(map[string][]string)
+
+	for key, value := range originalMap {
+		convertedMap[key] = []string{value}
+	}
+
+	return convertedMap
+}
+
+func (keycloakClient *KeycloakClient) NewLdapCustomMapper(ctx context.Context, ldapCustomMapper *LdapCustomMapper) error {
+	_, location, err := keycloakClient.post(ctx, fmt.Sprintf("/realms/%s/components", ldapCustomMapper.RealmId), convertFromLdapCustomMapperToComponent(ldapCustomMapper))
+	if err != nil {
+		return err
+	}
+
+	ldapCustomMapper.Id = getIdFromLocationHeader(location)
+
+	return nil
+}
+
+func (keycloakClient *KeycloakClient) GetLdapCustomMapper(ctx context.Context, realmId, id string) (*LdapCustomMapper, error) {
+	var component *component
+
+	err := keycloakClient.get(ctx, fmt.Sprintf("/realms/%s/components/%s", realmId, id), &component, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	return convertFromComponentToLdapCustomMapper(component, realmId)
+}
+
+func (keycloakClient *KeycloakClient) UpdateLdapCustomMapper(ctx context.Context, ldapCustomMapper *LdapCustomMapper) error {
+	return keycloakClient.put(ctx, fmt.Sprintf("/realms/%s/components/%s", ldapCustomMapper.RealmId, ldapCustomMapper.Id), convertFromLdapCustomMapperToComponent(ldapCustomMapper))
+}
+
+func (keycloakClient *KeycloakClient) DeleteLdapCustomMapper(ctx context.Context, realmId, id string) error {
+	return keycloakClient.DeleteComponent(ctx, realmId, id)
+}

provider/provider.go

@@ -59,6 +59,7 @@ func KeycloakProvider(client *keycloak.KeycloakClient) *schema.Provider {
 			"keycloak_ldap_msad_user_account_control_mapper":             resourceKeycloakLdapMsadUserAccountControlMapper(),
 			"keycloak_ldap_msad_lds_user_account_control_mapper":         resourceKeycloakLdapMsadLdsUserAccountControlMapper(),
 			"keycloak_ldap_full_name_mapper":                             resourceKeycloakLdapFullNameMapper(),
+			"keycloak_ldap_custom_mapper":                                resourceKeycloakLdapCustomMapper(),
 			"keycloak_custom_user_federation":                            resourceKeycloakCustomUserFederation(),
 			"keycloak_openid_user_attribute_protocol_mapper":             resourceKeycloakOpenIdUserAttributeProtocolMapper(),
 			"keycloak_openid_user_property_protocol_mapper":              resourceKeycloakOpenIdUserPropertyProtocolMapper(),

provider/resource_keycloak_ldap_custom_mapper.go

@@ -0,0 +1,142 @@
+package provider
+
+import (
+	"context"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
+	"github.com/mrparkers/terraform-provider-keycloak/keycloak"
+)
+
+func resourceKeycloakLdapCustomMapper() *schema.Resource {
+	return &schema.Resource{
+		CreateContext: resourceKeycloakLdapCustomMapperCreate,
+		ReadContext:   resourceKeycloakLdapCustomMapperRead,
+		UpdateContext: resourceKeycloakLdapCustomMapperUpdate,
+		DeleteContext: resourceKeycloakLdapCustomMapperDelete,
+		// This resource can be imported using {{realm}}/{{provider_id}}/{{mapper_id}}. The Provider and Mapper IDs are displayed in the GUI
+		Importer: &schema.ResourceImporter{
+			StateContext: resourceKeycloakLdapGenericMapperImport,
+		},
+		Schema: map[string]*schema.Schema{
+			"name": {
+				Type:        schema.TypeString,
+				Required:    true,
+				Description: "Display name of the mapper when displayed in the console.",
+			},
+			"realm_id": {
+				Type:        schema.TypeString,
+				Required:    true,
+				ForceNew:    true,
+				Description: "The realm in which the ldap user federation provider exists.",
+			},
+			"ldap_user_federation_id": {
+				Type:        schema.TypeString,
+				Required:    true,
+				ForceNew:    true,
+				Description: "The ldap user federation provider to attach this mapper to.",
+			},
+			"provider_id": {
+				Type:        schema.TypeString,
+				Required:    true,
+				ForceNew:    true,
+				Description: "ID of the custom LDAP mapper.",
+			},
+			"provider_type": {
+				Type:        schema.TypeString,
+				Required:    true,
+				ForceNew:    true,
+				Description: "Fully-qualified name of the Java class implementing the custom LDAP mapper.",
+			},
+			"config": {
+				Type:     schema.TypeMap,
+				Optional: true,
+			},
+		},
+	}
+}
+
+func getLdapCustomMapperFromData(data *schema.ResourceData) *keycloak.LdapCustomMapper {
+	config := make(map[string]string)
+	if v, ok := data.GetOk("config"); ok {
+		for key, value := range v.(map[string]interface{}) {
+			config[key] = value.(string)
+		}
+	}
+	return &keycloak.LdapCustomMapper{
+		Id:                   data.Id(),
+		Name:                 data.Get("name").(string),
+		RealmId:              data.Get("realm_id").(string),
+		LdapUserFederationId: data.Get("ldap_user_federation_id").(string),
+		ProviderId:           data.Get("provider_id").(string),
+		ProviderType:         data.Get("provider_type").(string),
+		Config:               config,
+	}
+}
+
+func setLdapCustomMapperData(data *schema.ResourceData, ldapCustomMapper *keycloak.LdapCustomMapper) {
+	data.SetId(ldapCustomMapper.Id)
+
+	data.Set("name", ldapCustomMapper.Name)
+	data.Set("realm_id", ldapCustomMapper.RealmId)
+	data.Set("ldap_user_federation_id", ldapCustomMapper.LdapUserFederationId)
+
+	data.Set("provider_id", ldapCustomMapper.ProviderId)
+	data.Set("provider_type", ldapCustomMapper.ProviderType)
+	data.Set("config", ldapCustomMapper.Config)
+}
+
+func resourceKeycloakLdapCustomMapperCreate(ctx context.Context, data *schema.ResourceData, meta interface{}) diag.Diagnostics {
+	keycloakClient := meta.(*keycloak.KeycloakClient)
+
+	ldapCustomMapper := getLdapCustomMapperFromData(data)
+
+	err := keycloakClient.NewLdapCustomMapper(ctx, ldapCustomMapper)
+	if err != nil {
+		return diag.FromErr(err)
+	}
+
+	setLdapCustomMapperData(data, ldapCustomMapper)
+
+	return resourceKeycloakLdapCustomMapperRead(ctx, data, meta)
+}
+
+func resourceKeycloakLdapCustomMapperRead(ctx context.Context, data *schema.ResourceData, meta interface{}) diag.Diagnostics {
+	keycloakClient := meta.(*keycloak.KeycloakClient)
+
+	realmId := data.Get("realm_id").(string)
+	id := data.Id()
+
+	ldapCustomMapper, err := keycloakClient.GetLdapCustomMapper(ctx, realmId, id)
+	if err != nil {
+		return handleNotFoundError(ctx, err, data)
+	}
+
+	setLdapCustomMapperData(data, ldapCustomMapper)
+
+	return nil
+}
+
+func resourceKeycloakLdapCustomMapperUpdate(ctx context.Context, data *schema.ResourceData, meta interface{}) diag.Diagnostics {
+	keycloakClient := meta.(*keycloak.KeycloakClient)
+
+	ldapCustomMapper := getLdapCustomMapperFromData(data)
+
+	err := keycloakClient.UpdateLdapCustomMapper(ctx, ldapCustomMapper)
+	if err != nil {
+		return diag.FromErr(err)
+	}
+
+	setLdapCustomMapperData(data, ldapCustomMapper)
+
+	return nil
+}
+
+func resourceKeycloakLdapCustomMapperDelete(ctx context.Context, data *schema.ResourceData, meta interface{}) diag.Diagnostics {
+	keycloakClient := meta.(*keycloak.KeycloakClient)
+
+	realmId := data.Get("realm_id").(string)
+	id := data.Id()
+
+	return diag.FromErr(keycloakClient.DeleteLdapCustomMapper(ctx, realmId, id))
+}