RandomSec/main/src/com/google/refine/oauth/Credentials.java

/*

Copyright 2010, Google Inc.
All rights reserved.

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modification, are permitted provided that the following conditions are
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    * Redistributions of source code must retain the above copyright
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    * Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
    * Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,           
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY           
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*/

package com.google.refine.oauth;

import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import oauth.signpost.OAuth;
import oauth.signpost.http.HttpParameters;

import com.google.refine.util.CookiesUtilities;

public class Credentials {

    private static final String TOKEN = "oauth_token";
    private static final String SECRET = "oauth_token_secret";
    
    public enum Type { 
        REQUEST("request"), 
        ACCESS("access");
        
        private final String postfix;
        
        Type(String postfix) {
            this.postfix = postfix;
        }
        
        public String getCookieName(Provider provider) {
            if (provider == null) {
                throw new RuntimeException("Provider can't be null");
            }
            return provider.getHost() + "_" + postfix;
        }
    };
    
    public static Credentials getCredentials(HttpServletRequest request, Provider provider, Type type) {
        Cookie cookie = CookiesUtilities.getCookie(request, type.getCookieName(provider));
        return (cookie == null) ? null : makeCredentials(cookie.getValue(), provider);
    }

    public static void setCredentials(HttpServletRequest request, HttpServletResponse response, Credentials credentials, Type type, int max_age) {
        String name = type.getCookieName(credentials.getProvider());
        String value = credentials.toString();
        CookiesUtilities.setCookie(request, response, name, value, max_age);
    }
    
    public static void deleteCredentials(HttpServletRequest request, HttpServletResponse response, Provider provider, Type type) {
        CookiesUtilities.deleteCookie(request, response, type.getCookieName(provider));
    }

    public static Credentials makeCredentials(String str, Provider provider) {
        HttpParameters p = OAuth.decodeForm(str);
        return new Credentials(p.getFirst(TOKEN), p.getFirst(SECRET), provider);
    }
    
    private Provider provider;
    private String token;
    private String secret;
    
    public Credentials(String token, String secret, Provider provider) {
        this.token = token;
        if (token == null) {
            throw new RuntimeException("Could not find " + TOKEN + " in auth credentials");
        }
        this.secret = secret;
        if (secret == null) {
            throw new RuntimeException("Could not find " + SECRET + " in auth credentials");
        }
        this.provider = provider;
        if (provider == null) {
            throw new RuntimeException("Provider can't be null");
        }
    }

    public String getToken() {
        return token;
    }

    public String getSecret() {
        return secret;
    }
    
    public Provider getProvider() {
        return provider;
    }
    
    @Override
    public String toString() {
        return TOKEN + "=" + OAuth.percentEncode(token) + "&" + SECRET + "=" + OAuth.percentEncode(secret);
    }
    
}