 package fi.jgke.tagger.config;

import fi.jgke.tagger.auth.JpaAuthenticationProvider;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.authentication.configurers.GlobalAuthenticationConfigurerAdapter;
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;

@Configuration
@EnableWebSecurity
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .antMatchers("/login", "/signup", "/static*/**").permitAll()
                .antMatchers(HttpMethod.GET, "/", "/register", "/sources/**", "/tags/**").permitAll()
                .antMatchers(HttpMethod.POST, "/register", "/tagsearch").permitAll()
                .anyRequest().authenticated();

        http.formLogin()
                .loginPage("/login")
                .loginProcessingUrl("/authenticate")
                .defaultSuccessUrl("/")
                .usernameParameter("username")
                .passwordParameter("password")
                .permitAll();

        http.logout()
                .logoutUrl("/logout")
                .logoutSuccessUrl("/")
                .permitAll()
                .invalidateHttpSession(true);

    }

    @Configuration
    protected static class AuthenticationConfiguration extends GlobalAuthenticationConfigurerAdapter {

        @Autowired
        private JpaAuthenticationProvider jpaAuthenticationProvider;

        @Override
        public void init(AuthenticationManagerBuilder auth) throws Exception {
            auth.authenticationProvider(jpaAuthenticationProvider);
        }
    }
}

package fi.jgke.tagger.config;

import fi.jgke.tagger.auth.JpaAuthenticationProvider;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpMethod;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.authentication.configurers.GlobalAuthenticationConfigurerAdapter;
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;

@Configuration
@EnableWebSecurity
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
                .antMatchers("/login", "/register", "/search", "/static*/**").permitAll()
                .antMatchers(HttpMethod.GET, "/", "/sources/**", "/tags/**").permitAll()
                .anyRequest().authenticated();

        http.formLogin()
                .loginPage("/login")
                .loginProcessingUrl("/authenticate")
                .defaultSuccessUrl("/")
                .usernameParameter("username")
                .passwordParameter("password")
                .permitAll();

        http.logout()
                .logoutUrl("/logout")
                .logoutSuccessUrl("/")
                .permitAll()
                .invalidateHttpSession(true);

    }

    @Configuration
    protected static class AuthenticationConfiguration extends GlobalAuthenticationConfigurerAdapter {

        @Autowired
        private JpaAuthenticationProvider jpaAuthenticationProvider;

        @Override
        public void init(AuthenticationManagerBuilder auth) throws Exception {
            auth.authenticationProvider(jpaAuthenticationProvider);
        }
    }
}

Fix permissions for searching & registering