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package act.app.conf;
/*-
* #%L
* ACT Framework
* %%
* Copyright (C) 2014 - 2017 ActFramework
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
import act.app.event.SysEventId;
import act.conf.AppConfig;
import act.security.CSRFProtector;
import act.util.LogSupport;
import org.osgl.$;
import org.osgl.http.H;
import org.osgl.util.C;
import org.osgl.util.E;
import org.osgl.util.S;
import org.osgl.util.StringValueResolver;
import java.util.*;
/**
* Base class for app developer implement source code based configuration
*/
public abstract class AppConfigurator<T extends AppConfigurator> extends AppConfig<T> {
protected static final H.Method GET = H.Method.GET;
protected static final H.Method POST = H.Method.POST;
protected static final H.Method PUT = H.Method.PUT;
protected static final H.Method DELETE = H.Method.DELETE;
private transient Set<String> controllerClasses = new HashSet<>();
private Map<String, Object> userProps = new HashMap<>();
@Override
public boolean equals(Object obj) {
if (obj == this) {
return true;
}
if (obj == null) {
return false;
}
return obj.getClass() == getClass();
}
@Override
public int hashCode() {
return getClass().hashCode();
}
@Override
public String toString() {
return getClass().getName();
}
@Override
protected void releaseResources() {
controllerClasses.clear();
userProps.clear();
releaseAppConfigResources();
super.releaseResources();
}
protected T registerStringValueResolver(Class<T> targetType, StringValueResolver<T> resolver) {
app().resolverManager().register(targetType, resolver);
return me();
}
protected CorsSetting cors() {
return new CorsSetting(this);
}
protected CsrfSetting csrf() {
return new CsrfSetting(this);
}
public void onRouteAdded(String controllerClassName) {
controllerClasses.add(controllerClassName);
}
public Set<String> controllerClasses() {
return C.newSet(controllerClasses);
}
protected T prop(String key, Object val) {
userProps.put(key, val);
return me();
}
public Set<String> propKeys() {
return userProps.keySet();
}
public <V> V propVal(String key) {
return $.cast(userProps.get(key));
}
/**
* Sub class shall override this method to do the configuration
*/
public abstract void configure();
protected void releaseAppConfigResources() {}
protected static class CsrfSetting extends LogSupport {
private AppConfigurator conf;
private boolean enabled;
private String headerName;
private String paramName;
private String cookieName;
private CSRFProtector protector;
CsrfSetting(AppConfigurator conf) {
this.conf = conf;
this.enabled = true;
conf.app().jobManager().on(SysEventId.CONFIG_PREMERGE, new Runnable() {
@Override
public void run() {
checkAndCommit();
}
});
}
public CsrfSetting enable() {
enabled = true;
return this;
}
public CsrfSetting disable() {
enabled = false;
return this;
}
public CsrfSetting headerName(String name) {
this.headerName = name;
return this;
}
public CsrfSetting paramName(String name) {
this.paramName = name;
return this;
}
public CsrfSetting cookieName(String name) {
this.cookieName = name;
return this;
}
public CsrfSetting protector(CSRFProtector protector) {
this.protector = $.requireNotNull(protector);
return this;
}
private void checkAndCommit() {
if (!enabled) {
logger.info("Global CSRF is disabled");
conf.enableCsrf(false);
}
logger.info("Global CSRF is enabled");
conf.csrfCookieName(this.cookieName);
conf.csrfHeaderName(this.headerName);
conf.csrfParamName(this.paramName);
conf.csrfProtector(this.protector);
}
}
protected static class CorsSetting extends LogSupport {
private AppConfigurator conf;
private boolean enabled;
private String allowOrigin;
private int maxAge;
private List<String> headersBoth = new ArrayList<String>();
private List<String> headersAllowed = new ArrayList<String>();
private List<String> headersExpose = new ArrayList<String>();
CorsSetting(AppConfigurator conf) {
this.conf = conf;
this.enabled = true;
conf.app().jobManager().on(SysEventId.CONFIG_PREMERGE, new Runnable() {
@Override
public void run() {
checkAndCommit();
}
});
}
public CorsSetting enable() {
enabled = true;
return this;
}
public CorsSetting disable() {
enabled = false;
return this;
}
public CorsSetting allowOrigin(String allowOrigin) {
E.illegalArgumentIf(S.blank(allowOrigin), "allow origin cannot be empty");
this.allowOrigin = allowOrigin;
return this;
}
public CorsSetting maxAge(int maxAge) {
E.illegalArgumentIf(maxAge < 0);
this.maxAge = maxAge;
return this;
}
public CorsSetting allowHeaders(String ... headers) {
headersAllowed.addAll(C.listOf(headers));
return this;
}
public CorsSetting exposeHeaders(String ... headers) {
headersExpose.addAll(C.listOf(headers));
return this;
}
public CorsSetting allowAndExposeHeaders(String ... headers) {
headersBoth.addAll(C.listOf(headers));
return this;
}
private void checkAndCommit() {
if (!enabled) {
logger.info("Global CORS is disabled");
conf.enableCors(false);
return;
}
logger.info("Global CORS is enabled");
conf.enableCors(true);
conf.corsAllowOrigin(allowOrigin);
conf.corsHeaders(consolidate(headersBoth));
conf.corsAllowHeaders(consolidate(headersAllowed));
conf.corsHeadersExpose(consolidate(headersExpose));
conf.corsMaxAge(maxAge);
}
private String consolidate(List<String> stringList) {
if (stringList.isEmpty()) {
return null;
}
Set<String> set = new HashSet<String>();
for (String s : stringList) {
set.addAll(C.listOf(s.split(",")));
}
return S.join(", ", set);
}
}
}