I am starting with Spring OAuth2. I would like to send the username and password to /oauth/token endpoint in POST body in application/json format.
curl -X POST -H "Authorization: Basic YWNtZTphY21lc2VjcmV0" -H "Content-Type: application/json" -d '{
"username": "user",
"password": "password",
"grant_type": "password"
}' "http://localhost:9999/api/oauth/token"
Is that possible?
Could you please give me an advice?
Solution (not sure if correct, but it seam that it is working):
Resource Server Configuration:
@Configuration
public class ServerEndpointsConfiguration extends ResourceServerConfigurerAdapter {
@Autowired
JsonToUrlEncodedAuthenticationFilter jsonFilter;
@Override
public void configure(HttpSecurity http) throws Exception {
http
.addFilterBefore(jsonFilter, ChannelProcessingFilter.class)
.csrf().and().httpBasic().disable()
.authorizeRequests()
.antMatchers("/test").permitAll()
.antMatchers("/secured").authenticated();
}
}
Filter:
@Component
@Order(value = Integer.MIN_VALUE)
public class JsonToUrlEncodedAuthenticationFilter implements Filter {
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException,
ServletException {
if (Objects.equals(request.getContentType(), "application/json") && Objects.equals(((RequestFacade) request).getServletPath(), "/oauth/token")) {
InputStream is = request.getInputStream();
ByteArrayOutputStream buffer = new ByteArrayOutputStream();
int nRead;
byte[] data = new byte[16384];
while ((nRead = is.read(data, 0, data.length)) != -1) {
buffer.write(data, 0, nRead);
}
buffer.flush();
byte[] json = buffer.toByteArray();
HashMap<String, String> result = new ObjectMapper().readValue(json, HashMap.class);
HashMap<String, String[]> r = new HashMap<>();
for (String key : result.keySet()) {
String[] val = new String[1];
val[0] = result.get(key);
r.put(key, val);
}
String[] val = new String[1];
val[0] = ((RequestFacade) request).getMethod();
r.put("_method", val);
HttpServletRequest s = new MyServletRequestWrapper(((HttpServletRequest) request), r);
chain.doFilter(s, response);
} else {
chain.doFilter(request, response);
}
}
@Override
public void destroy() {
}
}
Request Wrapper:
public class MyServletRequestWrapper extends HttpServletRequestWrapper {
private final HashMap<String, String[]> params;
public MyServletRequestWrapper(HttpServletRequest request, HashMap<String, String[]> params) {
super(request);
this.params = params;
}
@Override
public String getParameter(String name) {
if (this.params.containsKey(name)) {
return this.params.get(name)[0];
}
return "";
}
@Override
public Map<String, String[]> getParameterMap() {
return this.params;
}
@Override
public Enumeration<String> getParameterNames() {
return new Enumerator<>(params.keySet());
}
@Override
public String[] getParameterValues(String name) {
return params.get(name);
}
}
Authorization Server Configuration (disable Basic Auth for /oauth/token endpoint:
@Configuration
public class AuthorizationServerConfiguration extends AuthorizationServerConfigurerAdapter {
...
@Override
public void configure(AuthorizationServerSecurityConfigurer oauthServer) throws Exception {
oauthServer.allowFormAuthenticationForClients(); // Disable /oauth/token Http Basic Auth
}
...
}
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