UserController.java

/**
* Copyright 2014 IHTSDO
* 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.
*/
package org.ihtsdo.otf.refset.api.authentication;

import java.util.HashMap;
import java.util.Map;

import org.ihtsdo.otf.refset.common.Result;
import org.ihtsdo.otf.refset.common.Utility;
import org.ihtsdo.otf.refset.security.RefsetAuthenticationProvider;
import org.ihtsdo.otf.refset.security.RefsetIdentityService;
import org.ihtsdo.otf.refset.security.User;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import com.wordnik.swagger.annotations.Api;
import com.wordnik.swagger.annotations.ApiOperation;

/**Controller to provide authentication and authorization services
 *
 */
@RestController
@Api(value="Refset User Authentication and Authorization", description="Service to authenticate & authorize user and get details of user")
@RequestMapping("/v1.0/refsets")
public class UserController {
	
	private static final Logger logger = LoggerFactory.getLogger(UserController.class);

	private static final String SUCCESS = "Success";

	@Autowired
	RefsetAuthenticationProvider provider;
	
	@Autowired
	RefsetIdentityService service;
	
	@RequestMapping( method = RequestMethod.POST, value = "/getUserDetails",  produces = "application/json", consumes = "application/json")
	@ApiOperation( value = "Authenticate a user for given username and password provided in request header and returns user details ",
			notes = "This api call authenticate a user and also authorize a user for Refset app access. Pre-Auth tokens(X-REFSET-PRE-AUTH-USERNAME & X-REFSET-PRE-AUTH-TOKEN)"
					+ " supplied in request header, are being used for authentication/authorization. If successful"
					+ " it returns an User details object and a authentication token X-REFSET-AUTH-TOKEN as part of response header"
					+ " to be used in header of subsequent requests for API handshake")
	@PreAuthorize("hasRole('ROLE_USER')")
	public ResponseEntity<Result< Map<String, Object>>> login() throws Exception {
		
		logger.debug("authenticating user {}");

		Result<Map<String, Object>> r = Utility.getResult();
		Map<String, Object> data = new HashMap<String, Object>();
		User u = org.ihtsdo.otf.refset.common.Utility.getUserDetails();
		if (StringUtils.isEmpty(u.getGivenname())) {
			
			Authentication authentication = new UsernamePasswordAuthenticationToken(u, u.getPassword());
			provider.authenticate(authentication);
			u = (User)authentication.getPrincipal();
			
		}
		u.setPassword(null);//make it empty before sending it in response
		data.put("user", u);
		r.setData(data);

		r.getMeta().setMessage(SUCCESS);
		r.getMeta().setStatus(HttpStatus.OK);

		return new ResponseEntity<Result<Map<String,Object>>>(r, HttpStatus.OK);
    }	
	

}