[cas-user] "Ticket cannot be null" - CAS 5.2.0 using OAuth2 Authentication Code

[Diego Henrique Pagani]

Hello,

i'm trying to set up my application to log in CAS 5.2.0 using OAuth2 protocol.  
When I try to get the access token, CAS server returns 500 code to my 
application and have this stack in log: 


2017-12-21 13:53:27,263 ERROR 
[org.springframework.boot.web.support.ErrorPageFilter] - <Forwarding to error 
page from request [/oauth2.0/accessToken] due to exception [ticket cannot be 
null]>
java.lang.RuntimeException: ticket cannot be null
 at 
org.apereo.cas.support.oauth.web.endpoints.OAuth20AccessTokenEndpointController.handleRequest(OAuth20AccessTokenEndpointController.java:120)
 ~[cas-server-support-oauth-5.2.0.jar:5.2.0]
 at 
org.apereo.cas.support.oauth.web.endpoints.OAuth20AccessTokenEndpointController$$FastClassBySpringCGLIB$$db180f28.invoke(<generated>)
 ~[cas-server-support-oauth-5.2.0.jar:5.2.0]
 at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) 
~[spring-core-4.3.12.RELEASE.jar:4.3.12.RELEASE]
 at 
org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:738)
 ~[spring-aop-4.3.12.RELEASE.jar:4.3.12.RELEASE]
 at 
org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)
 ~[spring-aop-4.3.12.RELEASE.jar:4.3.12.RELEASE]
 [...]



I'm using maven War Overlay, registering services using json files, and 
authenticating by a txt file, just for testing. 

Here is my service json config: 
{
 "@class": "org.apereo.cas.support.oauth.services.OAuthRegisteredService",
 "serviceId": "^http://.*";,
 "name": "application_name",
 "id": 1000,
 "clientId": 123,
 "clientSecret": 123,
 "jsonFormat" : false,
 "bypassApprovalPrompt": true,
    "generateRefreshToken": false,
 "attributeReleasePolicy" : {
        "@class" : "org.apereo.cas.services.ReturnAllAttributeReleasePolicy"
    },
    
}  




My application.yml
server:
  ssl:
    enabled: true
    key-store: ./keystore.jks
    key-store-password: password
    key-password: password
    key-alias: cas
cas:
  server:
    name: http://10.19.10.33:8081
    prefix: http://10.19.10.33:8081/cas
  authn:
    accept:
      users: null
    file:
      filename: classpath:whitelist.txt
  adminPagesSecurity:
    ip: 127.0.0.1
    loginUrl: https://10.19.10.33:8443/cas/login
    adminRoles: ROLE_ADMIN
    users: classpath:/adminusers.properties
  monitor:
    endpoints:
      enabled: true
      sensitive: false
  serviceRegistry:
    yaml:
      location: classpath:/services
  tgc:
    path: null
    maxAge: -1
    domain: localhost
    name: TGC
    secure: false
    httpOnly: true
    rememberMeMaxAge: 1209600
    crypto:
      encryption:
        key: <hide>
      signing:
        key: <hide>
      enabled: true
    monitor:
      st:
        warn:
          threshold: 10
          evictionThreshold: 0
      tgt:
        warn:
          threshold: 10
          evictionThreshold: 0
spring:
  config:
    name: cfs-cas
management:
  contextPath: /status
  security:
    enabled: true
    roles: ADMIN
    sessions: IF_REQUIRED
logging:
  config: classpath:log4j2.xml

Is there something I'm missing? 

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