Ruby中的Twitter三脚授权

时间:2013-05-13 06:58:29

标签: ruby-on-rails ruby twitter twitter-oauth

我在铁轨上尝试我的手红宝石。大部分时间我都在Sinatra编写代码。无论如何,这个问题可能不需要对框架做任何事情。这个问题听起来可能是一个非常新手的问题。我第一次玩Twitter 1.1 API和OAuth。

我创建了一个应用程序XYZ并在Twitter上注册了它。我得到了XYZ的消费者密钥,即CONSUMER_KEY和消费者秘密,即CONSUMER_SECRET。我也有XYZ自己的访问令牌,即ACCESS_TOKEN和访问机密,即ACCESS_SECRET

XYZ应用程序类型:读取,写入和访问直接消息 XYZ回调网址:http://www.mysite.com/cback 我已经检查过:允许此应用程序用于使用Twitter登录

我想做的事情非常简单:

1)用户访问我的网站并点击链接Link your twitter account(不要通过Twitter登录)
2)打开twitter弹出窗口,用户授权XYZ代表他/她执行操作 3)一旦用户允许并弹出窗口关闭,XYZ应用程序将获取用户的访问令牌并保密,并保存在数据库中 4)然后XYZ使用该用户的令牌和秘密来执行将来的操作。

我可能很蠢,这样的工作流程已经在几千个网站上实现,Twitter API文档解释了这个三足认证,但我仍然无法弄清楚。

我已阅读https://dev.twitter.com/docs/auth/3-legged-authorizationhttps://dev.twitter.com/docs/auth/implementing-sign-twitter遗憾的是,在互联网上找不到一步一步解释的红宝石代码。

当用户点击Link your twitter account时,应使用哪个链接打开Twitter身份验证页面。 任何人都可以在这里用我的pseduo凭证写一些伪代码来实现我的目标,从这个工作流程结束到最后?感谢。

更新:

我开始请求请求令牌为

require 'oauth'
consumer = OAuth::Consumer.new(CONSUMER_KEY, CONSUMER_SECRET,
{ site: "https://twitter.com"})
request_token = consumer.get_request_token oauth_callback: 'http://www.mysite.com/tauth'
redirect_to request_token.authorize_url

2 个答案:

答案 0 :(得分:2)

我不熟悉ROR,但是当用户点击按钮时,您需要遵循OAuth'dance'的工作流程:

  1. 通过发送一个来从Twitter获取未经授权的请求令牌 要求

    POST https://api.twitter.com/oauth/request_token

    使用您的消费者密钥签署请求。这将在后台完成 对用户来说是透明的。

  2. 您将收到o outh_token和oauth_token_secret 鸣叫声。

  3. 将用户重定向到

    https://api.twitter.com/oauth/authorize?oauth_token= [token_received_from_twitter]

    使用您在步骤2中从Twitter收到的oauth令牌值。

  4. 当用户授权您的应用时,他们会被重定向到您的应用 带有oauth_token和oauth_verifier的回调网址附加到 网址。即。

    http://www.mysite.com/cback?oauth_token=NPcudxy0yU5T3tBzho7iCotZ3cnetKwcTIRlX0iwRl0&oauth_verifer=uw7NjWHT6OJ1MpJOXsHfNxoAhPKpgI8BlYDhxEjIBY

  5. 通过发送签名将请求令牌转换为访问令牌 请求oauth_verifier到

    POST https://api.twitter.com/oauth/access_token

    签署您的请求 与您的消费者秘密和步骤2中收到的令牌秘密。

  6. 如果一切顺利,您将收到一个新的oauth_token和 来自Twitter的oauth_token_secret。这是您的访问令牌 用户。

  7. 使用步骤6中收到的访问令牌和秘密即可 Twitter api通过发送已签名的请求代表用户进行呼叫 到适当的api端点。

答案 1 :(得分:1)

希望您此时解决了您的问题,但我构建了此示例使用Twitter ruby​​ Web应用程序登录,该应用程序提供了执行此集成所需的所有解释。下面是一个用注释实现所有必要方法的类:

require "net/https"
require "simple_oauth"

# This class implements the requests that should 
# be done to Twitter to be able to authenticate
# users with Twitter credentials
class TwitterSignIn

class << self
    def configure
    @oauth = YAML.load_file(TWITTER)
    end

    # See https://dev.twitter.com/docs/auth/implementing-sign-twitter (Step 1)
    def request_token

    # The request to get request tokens should only
    # use consumer key and consumer secret, no token
    # is necessary
    response = TwitterSignIn.request(
        :post, 
        "https://api.twitter.com/oauth/request_token",
        {},
        @oauth
    )

    obj = {}
    vars = response.body.split("&").each do |v|
        obj[v.split("=").first] = v.split("=").last
    end

    # oauth_token and oauth_token_secret should
    # be stored in a database and will be used
    # to retrieve user access tokens in next requests
    db = Daybreak::DB.new DATABASE
    db.lock { db[obj["oauth_token"]] = obj }
    db.close

    return obj["oauth_token"]
    end

    # See https://dev.twitter.com/docs/auth/implementing-sign-twitter (Step 2)
    def authenticate_url(query) 
    # The redirection need to be done with oauth_token
    # obtained in request_token request
    "https://api.twitter.com/oauth/authenticate?oauth_token=" + query
    end

    # See https://dev.twitter.com/docs/auth/implementing-sign-twitter (Step 3)
    def access_token(oauth_token, oauth_verifier)

    # To request access token, you need to retrieve
    # oauth_token and oauth_token_secret stored in 
    # database
    db = Daybreak::DB.new DATABASE
    if dbtoken = db[oauth_token]

        # now the oauth signature variables should be
        # your app consumer keys and secrets and also
        # token key and token secret obtained in request_token
        oauth = @oauth.dup
        oauth[:token] = oauth_token
        oauth[:token_secret] = dbtoken["oauth_token_secret"]

        # oauth_verifier got in callback must 
        # to be passed as body param
        response = TwitterSignIn.request(
        :post, 
        "https://api.twitter.com/oauth/access_token",
        {:oauth_verifier => oauth_verifier},
        oauth
        )

        obj = {}
        vars = response.body.split("&").each do |v|
        obj[v.split("=").first] = v.split("=").last
        end

        # now the we got the access tokens, store it safely
        # in database, you're going to use it later to
        # access Twitter API in behalf of logged user
        dbtoken["access_token"] = obj["oauth_token"]
        dbtoken["access_token_secret"] = obj["oauth_token_secret"]
        db.lock { db[oauth_token] = dbtoken }

    else
        oauth_token = nil
    end

    db.close
    return oauth_token
    end

    # This is a sample Twitter API request to 
    # make usage of user Access Token
    # See https://dev.twitter.com/docs/api/1.1/get/account/verify_credentials
    def verify_credentials(oauth_token)
    db = Daybreak::DB.new DATABASE

    if dbtoken = db[oauth_token]

        # see that now we use the app consumer variables
        # plus user access token variables to sign the request
        oauth = @oauth.dup
        oauth[:token] = dbtoken["access_token"]
        oauth[:token_secret] = dbtoken["access_token_secret"]

        response = TwitterSignIn.request(
        :get, 
        "https://api.twitter.com/1.1/account/verify_credentials.json",
        {},
        oauth
        )

        user = JSON.parse(response.body)

        # Just saving user info to database
        user.merge! dbtoken 
        db.lock { db[user["screen_name"]] = user }

        result = user

    else
        result = nil
    end

    db.close
    return result
    end

    # Generic request method used by methods above
    def request(method, uri, params, oauth)
    uri = URI.parse(uri.to_s)

    # always use SSL, you are dealing with other users data
    http = Net::HTTP.new(uri.host, uri.port)
    http.use_ssl = true
    # uncomment line below for debug purposes
    #http.set_debug_output($stdout)

    req = (method == :post ? Net::HTTP::Post : Net::HTTP::Get).new(uri.request_uri)
    req.body = params.to_a.map { |x| "#{x[0]}=#{x[1]}" }.join("&")
    req["Host"] = "api.twitter.com"

    # Oauth magic is done by simple_oauth gem.
    # This gem is enable you to use any HTTP lib
    # you want to connect in OAuth enabled APIs.
    # It only creates the Authorization header value for you
    # and you can assign it wherever you want
    # See https://github.com/laserlemon/simple_oauth
    req["Authorization"] = SimpleOAuth::Header.new(method, uri.to_s, params, oauth)

    http.request(req)
    end

  end
end

更详细的说明: https://github.com/lfcipriani/sign_in_with_twitter_sample