Cas server - 5.2.5 and Rest Authentication support

[Raghavan TV]

Hi,

Am testing CAS against rest-authentication method. 

But am always receiving an error in the log that says

[1;31m2018-06-15 22:59:38,794 ERROR [org.apereo.cas.authentication.PolicyBasedAuthenticationManager] - <[restauth]: [JSON parse error: Missing type id when trying to resolve subtype of [simple type, class org.apereo.cas.authentication.principal.SimplePrincipal]: missing type id property '@class'; nested exception is com.fasterxml.jackson.databind.exc.InvalidTypeIdException: Missing type id when trying to resolve subtype of [simple type, class org.apereo.cas.authentication.principal.SimplePrincipal]: missing type id property '@class'
 at [Source: (PushbackInputStream); line: 1, column: 54] / Missing type id when trying to resolve subtype of [simple type, class org.apereo.cas.authentication.principal.SimplePrincipal]: missing type id property '@class'
 at [Source: (PushbackInputStream); line: 1, column: 54]]> [m
[1;31m2018-06-15 22:59:38,795 ERROR [org.apereo.cas.authentication.PolicyBasedAuthenticationManager] - <Authentication has failed. Credentials may be incorrect or CAS cannot find authentication handler that supports [admin] of type [UsernamePasswordCredential]. Examine the configuration to ensure a method of authentication is defined and analyze CAS logs at DEBUG level to trace the authentication event.> [m

Am I missing some configuration related to Policy ?

Environment

Windows 7

JDK: 8

Tomcat: 9.0.8

----------------

Steps followed

----------------

1) Edited the pom.xml to add the rest-authentication overlay

<dependency>

<groupId>org.apereo.cas</groupId>

<artifactId>cas-server-support-rest-authentication</artifactId>

<version>${cas.version}</version>

</dependency>

2) Deployed a new REST (mock) service

Note:

Checked the logs and the request from CAS server is fine and the response is also a HTTP-200 with following response

{"@c":".SimplePrincipal","attributes":{},"id":"adminuser"}

3) Edited application.properties with following configured

cas.authn.accept.users=
logging.level.org.apereo=TRACE
logging.level.org.jasig=TRACE
logging.level.org.apache=DEBUG

cas.authn.rest.uri=http://localhost:9909/idp/authenticate
cas.authn.rest.name=restauth
cas.authn.rest.passwordEncoder.type=NONE

[Chia-Ying (David) Yang]

I ran into that the other day and got it working by changing it to "@class": "org.apereo.cas.authentication.principal.SimplePrincipal".

David

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[Raghavan TV]

Hi David

Yes. That solved the issue. 

Many thanks

Raghav

[dg]

hey, i got same issue. actually i dont understand solution. can you provide more information?

15 Haziran 2018 Cuma 20:33:54 UTC+3 tarihinde Raghavan TV yazdı:

[dg]

i return id and attributes from rest endpoint as response. 

my cas config

cas.authn.rest.uri=http://localhost:8082/validate
cas.authn.rest.name=restauth
cas.authn.rest.charset=UTF-8
cas.authn.rest.passwordEncoder.type=NONE

here is the log. "dg" value is returned from endpoint. so successful authentication at rest side. but error in cas side.

2020-04-15 18:57:46,630 ERROR [org.apereo.cas.authentication.PolicyBasedAuthenticationManager] - <Authentication has failed. 

Credentials may be incorrect or CAS cannot find authentication handler that supports 

[UsernamePasswordCredential(username=dg, source=null, customFields={})] of type [UsernamePasswordCredential]. 

Examine the configuration to ensure a method of authentication is defined and analyze CAS logs at DEBUG level to trace the authentication event.>

2020-04-15 18:57:46,630 ERROR [org.apereo.cas.authentication.PolicyBasedAuthenticationManager] - <[restauth]: [Error while extracting response for type 

[class org.apereo.cas.authentication.principal.SimplePrincipal] and content type [application/json]; 

nested exception is org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Missing type id when trying to resolve subtype of 

[simple type, class org.apereo.cas.authentication.principal.SimplePrincipal]: missing type id property '@class'; nested exception is com.fasterxml.jackson.databind.exc.InvalidTypeIdException: 

Missing type id when trying to resolve subtype of [simple type, class org.apereo.cas.authentication.principal.SimplePrincipal]: missing type id property '@class'
 at [Source: (PushbackInputStream); line: 1, column: 27] / JSON parse error: Missing type id when trying to resolve subtype of [simple type, class org.apereo.cas.authentication.principal.SimplePrincipal]: 

missing type id property '@class'; nested exception is com.fasterxml.jackson.databind.exc.InvalidTypeIdException: Missing type id when trying to resolve subtype of [simple type, class org.apereo.cas.authentication.principal.SimplePrincipal]: 

missing type id property '@class'
 at [Source: (PushbackInputStream); line: 1, column: 27]]>
2020-04-15 18:57:46,631 INFO [org.apereo.cas.authentication.PolicyBasedAuthenticationManager] - <[Static Credentials] exception details: [dg not found in backing map.].>

[dg]

okey. i found the solution. 

in rest response, i provided "id" and "attributes". but when i add "@class" variable, it works.

@Data
private static class ResponseDTO {
    @JsonProperty("@class")
    private String clazz;
    private String id;
    private final Map<String, Object> attributes;
    ResponseDTO(String id) {
        this.id = id;
        clazz = "org.apereo.cas.authentication.principal.SimplePrincipal";
        attributes = new HashMap<>();
    }
}