package org.keycloak.broker.oidc.mappers;
import org.keycloak.broker.oidc.KeycloakOIDCIdentityProvider;
import org.keycloak.broker.oidc.KeycloakOIDCIdentityProviderFactory;
import org.keycloak.broker.oidc.OIDCIdentityProviderFactory;
import org.keycloak.broker.provider.AbstractIdentityProviderMapper;
import org.keycloak.broker.provider.BrokeredIdentityContext;
import org.keycloak.broker.provider.IdentityBrokerException;
import org.keycloak.models.ClientModel;
import org.keycloak.models.IdentityProviderMapperModel;
import org.keycloak.models.KeycloakSession;
import org.keycloak.models.RealmModel;
import org.keycloak.models.RoleModel;
import org.keycloak.models.UserModel;
import org.keycloak.provider.ProviderConfigProperty;
import org.keycloak.representations.JsonWebToken;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
/**
* @author <a href="mailto:bill@burkecentral.com">Bill Burke</a>
* @version $Revision: 1 $
*/
public class RoleMapper extends AbstractIdentityProviderMapper {
public static final String[] COMPATIBLE_PROVIDERS = {KeycloakOIDCIdentityProviderFactory.PROVIDER_ID, OIDCIdentityProviderFactory.PROVIDER_ID};
private static final List<ProviderConfigProperty> configProperties = new ArrayList<ProviderConfigProperty>();
public static final String ROLE = "role";
public static final String CLAIM = "claim";
public static final String ID_TOKEN_CLAIM = "id.token.claim";
public static final String ACCESS_TOKEN_CLAIM = "access.token.claim";
public static final String CLAIM_VALUE = "claim.value";
static {
ProviderConfigProperty property;
property = new ProviderConfigProperty();
property.setName(CLAIM);
property.setLabel("Claim");
property.setHelpText("Name of claim to search for in token. You can reference nested claims using a '.', i.e. 'address.locality'.");
property.setType(ProviderConfigProperty.STRING_TYPE);
configProperties.add(property);
property = new ProviderConfigProperty();
property.setName(CLAIM_VALUE);
property.setLabel("Claim Value");
property.setHelpText("Value the claim must have. If the claim is an array, then the value must be contained in the array.");
property.setType(ProviderConfigProperty.STRING_TYPE);
configProperties.add(property);
property = new ProviderConfigProperty();
property.setName(ID_TOKEN_CLAIM);
property.setLabel("ID Token Claim");
property.setType(ProviderConfigProperty.BOOLEAN_TYPE);
property.setDefaultValue("true");
property.setHelpText("If this claim is in ID Token, apply role.");
configProperties.add(property);
property = new ProviderConfigProperty();
property.setName(ACCESS_TOKEN_CLAIM);
property.setLabel("Access Token Claim");
property.setType(ProviderConfigProperty.BOOLEAN_TYPE);
property.setDefaultValue("true");
property.setHelpText("If this claim is in Access Token, apply role.");
configProperties.add(property);
property = new ProviderConfigProperty();
property.setName(ROLE);
property.setLabel("Role");
property.setHelpText("Role to grant to user. To reference an application role the syntax is appname.approle, i.e. myapp.myrole");
property.setType(ProviderConfigProperty.STRING_TYPE);
configProperties.add(property);
}
public static final String PROVIDER_ID = "oidc-role-idp-mapper";
public static String[] parseRole(String role) {
int scopeIndex = role.indexOf('.');
if (scopeIndex > -1) {
String appName = role.substring(0, scopeIndex);
role = role.substring(scopeIndex + 1);
String[] rtn = {appName, role};
return rtn;
} else {
String[] rtn = {null, role};
return rtn;
}
}
public static Object getClaimValue(JsonWebToken token, String claim) {
String[] split = claim.split("\\.");
Map<String, Object> jsonObject = token.getOtherClaims();
for (int i = 0; i < split.length; i++) {
if (i == split.length - 1) {
return jsonObject.get(split[i]);
} else {
Object val = jsonObject.get(split[i]);
if (!(val instanceof Map)) return null;
jsonObject = (Map<String, Object>)val;
}
}
return null;
}
@Override
public List<ProviderConfigProperty> getConfigProperties() {
return configProperties;
}
@Override
public String getId() {
return PROVIDER_ID;
}
@Override
public String[] getCompatibleProviders() {
return COMPATIBLE_PROVIDERS;
}
@Override
public String getDisplayCategory() {
return "Role Mapper";
}
@Override
public String getDisplayType() {
return "Role Mapper";
}
@Override
public void importNewUser(KeycloakSession session, RealmModel realm, UserModel user, IdentityProviderMapperModel mapperModel, BrokeredIdentityContext context) {
String roleName = mapperModel.getConfig().get(ROLE);
if (isClaimPresent(mapperModel, context)) {
RoleModel role = getRoleFromString(realm, roleName);
if (role == null) throw new IdentityBrokerException("Unable to find role: " + roleName);
user.grantRole(role);
}
}
protected RoleModel getRoleFromString(RealmModel realm, String roleName) {
String[] parsedRole = parseRole(roleName);
RoleModel role = null;
if (parsedRole[0] == null) {
role = realm.getRole(parsedRole[1]);
} else {
ClientModel client = realm.getClientByClientId(parsedRole[0]);
role = client.getRole(parsedRole[1]);
}
return role;
}
protected boolean isClaimPresent(IdentityProviderMapperModel mapperModel, BrokeredIdentityContext context) {
boolean searchAccess = Boolean.valueOf(mapperModel.getConfig().get(ACCESS_TOKEN_CLAIM));
boolean searchId = Boolean.valueOf(mapperModel.getConfig().get(ID_TOKEN_CLAIM));
String claim = mapperModel.getConfig().get(CLAIM);
String desiredValue = mapperModel.getConfig().get(CLAIM_VALUE);
if (searchAccess) {
JsonWebToken token = (JsonWebToken)context.getContextData().get(KeycloakOIDCIdentityProvider.VALIDATED_ACCESS_TOKEN);
if (token != null) {
Object value = getClaimValue(token, claim);
if (valueEquals(desiredValue, value)) return true;
}
}
if (searchId) {
JsonWebToken token = (JsonWebToken)context.getContextData().get(KeycloakOIDCIdentityProvider.VALIDATED_ID_TOKEN);
if (token != null) {
Object value = getClaimValue(token, claim);
if (valueEquals(desiredValue, value)) return true;
}
}
return false;
}
public boolean valueEquals(String desiredValue, Object value) {
if (value instanceof String) {
if (desiredValue.equals(value)) return true;
} else if (value instanceof Double) {
try {
if (Double.valueOf(desiredValue).equals(value)) return true;
} catch (Exception e) {
}
} else if (value instanceof Integer) {
try {
if (Integer.valueOf(desiredValue).equals(value)) return true;
} catch (Exception e) {
}
} else if (value instanceof Boolean) {
try {
if (Boolean.valueOf(desiredValue).equals(value)) return true;
} catch (Exception e) {
}
} else if (value instanceof List) {
List list = (List)value;
for (Object val : list) {
return valueEquals(desiredValue, val);
}
}
return false;
}
@Override
public void updateBrokeredUser(KeycloakSession session, RealmModel realm, UserModel user, IdentityProviderMapperModel mapperModel, BrokeredIdentityContext context) {
String roleName = mapperModel.getConfig().get(ROLE);
if (!isClaimPresent(mapperModel, context)) {
RoleModel role = getRoleFromString(realm, roleName);
if (role == null) throw new IdentityBrokerException("Unable to find role: " + roleName);
user.deleteRoleMapping(role);
}
}
@Override
public String getHelpText() {
return "If a claim exists, grant the user the specified realm or application role.";
}
}