Securing GAE applications from unauthorized access is described in the Security and Authentication section of the Google App Engine documentation.
Authorization constraints are declared in the web.xml file (see The web.xml). This applies to
Apache Camel applications as well. In the following example, the application is configured
to only allow authenticated users (in any role) to access the application. Additionally,
access to /worker/\* URLs masy only be done by users in the admin
role. By default, web hook URLs installed by the gtask component match the /worker/\* pattern and should
not be accessed by normal users. With this authorization constraint, only the task
queuing service (which is always in the admin role) is allowed to access the web hooks.
For implementing custom, non-declarative authorization logic, Apache Camel GAE applications
should use the Google
Accounts Java API.
Example 5. web.xml with authorization constraint
<web-app
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
xsi:schemaLocation="
http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
<servlet>
<servlet-name>CamelServlet</servlet-name>
<servlet-class>org.apache.camel.component.servlet.CamelHttpTransportServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>appctx.xml</param-value>
</init-param>
</servlet>
<!--
Mapping used for external requests
-->
<servlet-mapping>
<servlet-name>CamelServlet</servlet-name>
<url-pattern>/camel/*</url-pattern>
</servlet-mapping>
<!--
Mapping used for web hooks accessed by task queueing service.
-->
<servlet-mapping>
<servlet-name>CamelServlet</servlet-name>
<url-pattern>/worker/*</url-pattern>
</servlet-mapping>
<!--
By default allow any user who is logged in to access the whole
application.
-->
<security-constraint>
<web-resource-collection>
<url-pattern>/*</url-pattern>
</web-resource-collection>
<auth-constraint>
<role-name>*</role-name>
</auth-constraint>
</security-constraint>
<!--
Allow only admin users to access /worker/* URLs e.g. to prevent
normal user to access gtask web hooks.
-->
<security-constraint>
<web-resource-collection>
<url-pattern>/worker/*</url-pattern>
</web-resource-collection>
<auth-constraint>
<role-name>admin</role-name>
</auth-constraint>
</security-constraint>
</web-app> |  |  |
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