Create a filter that grabs what ever header(s) you're using for authentication.
import org.springframework.security.web.authentication.preauth.AbstractPreAuthenticatedProcessingFilter;
public class APIKeyAuthFilter extends AbstractPreAuthenticatedProcessingFilter {
private String principalRequestHeader;
public APIKeyAuthFilter(String principalRequestHeader) {
this.principalRequestHeader = principalRequestHeader;
}
@Override
protected Object getPreAuthenticatedPrincipal(HttpServletRequest request) {
return request.getHeader(principalRequestHeader);
}
@Override
protected Object getPreAuthenticatedCredentials(HttpServletRequest request) {
return "N/A";
}
}
Configure the filter in your Web Security config.
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.annotation.Order;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.authentication.BadCredentialsException;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.AuthenticationException;
@Configuration
@EnableWebSecurity
@Order(1)
public class APISecurityConfig extends WebSecurityConfigurerAdapter {
@Value("${yourapp.http.auth-token-header-name}")
private String principalRequestHeader;
@Value("${yourapp.http.auth-token}")
private String principalRequestValue;
@Override
protected void configure(HttpSecurity httpSecurity) throws Exception {
APIKeyAuthFilter filter = new APIKeyAuthFilter(principalRequestHeader);
filter.setAuthenticationManager(new AuthenticationManager() {
@Override
public Authentication authenticate(Authentication authentication) throws AuthenticationException {
String principal = (String) authentication.getPrincipal();
if (!principalRequestValue.equals(principal))
{
throw new BadCredentialsException("The API key was not found or not the expected value.");
}
authentication.setAuthenticated(true);
return authentication;
}
});
httpSecurity.
antMatcher("/api/**").
csrf().disable().
sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS).
and().addFilter(filter).authorizeRequests().anyRequest().authenticated();
}
}
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