HTML web page tutorial seems to have received too much attention from the industry since birth. Several large wall sites have promoted coding HTML for beginners.

Chatting in the group today. Someone asked me: In addition to Douban everyone Sina Weibo. Which one provides API?

Skiyo suddenly said it. Our team at Skiyo Blog feel a bit bleak for the domestic environment.

Far away. Let’s analyze OAuth today how to use it.

The reason for writing this article is that when I was learning the OAuth protocol. I found some articles that are from a document called [OAuth Development Documentation.docx].

More general.. and not easy to understand.

So Skiyo need to describe the OAuth protocol in my own words.

For a better explanation, let’s use the watercress as an example.

A user A has registered an account on Douban. After logging in, he can perform some actions, such as publishing an HTML tags tutorial and all kind of broadcast.

So good. Now there is a website B.. Skiyo team wants A to post a broadcast on my website.

But there is a problem. Website B is unreliable for User A. User A does not want to put his account password on Website B.

Also, Website B is also unreliable for Douban. Douban does not know whether Website B is a real user.

To solve this problem. These three people (Douban / User A / Website B) sat together and opened a small meeting.

The result of the meeting is the OAuth protocol.

This agreement seems a bit complicated for security. I will simply say the next step. I have some metaphors that are not appropriate. Just let everyone understand the steps.

There are three steps in the big steps.

Before these steps: Website B has to go to Douban to apply for a token 1 (oauth_consumer_key) and a key 1 (oauth_consumer_secret) (a lot of keys. This key is called key 1). It is two people to meet each other.. Then website B again visit Douban. Douban can know: Oh. Is this not B?

First step.

Website B took the key to talk to Douban. Hi brother. I came. Then Douban said: I only recognize the key does not recognize people. Pick up your token 1 (oauth_consumer_key) and key 1 (oauth_consumer_secret) I will identify .

At this time, the website B is wary and come out. After the watercress is verified, it says: Oh, yes. You are B. That’s good. I will give you another key 2 (oauth_token_secret) and token 2 (oauth_token).

Website B took it back.

The second step.

At this time, User A is about to participate. Website B holds the token 2 (oauth_token) and the key 2 (oauth_token_secret) with A to visit the watercress. At this time, the three people stand one. Douban first to verify that user A is not true.

Regarding action, user A needs to log in on Douban. If the verification is successful, Douban needs to ask user A.

Douban says: A, do you know that B? Do you let him move your things?

A said: I know him, he is my good brother. I am moving with something.

At this time, Douban will know. That’s good. That website B can add and delete things from me.

Also, Website B is still provided to Douban a back door. A agrees. Douban requires A user to take the key 2 to the back door to find the website B.

The third step.

If the above is still smooth. Website B will take the key 1 (oauth_consumer_secret) and the key 2 (oauth_token_secret) to visit the watercress.

After the Douban has verified again, it will give the website B a key 3 (oauth_token_secret) and a token 3 (oauth_token).

Although this name is oauth_token, here at Skiyo we call it oauth_access_token.

At this time for the user / Douban, Website B can be trusted.

If website B wants to modify the content of user A in the future, you need to take the key 1 (oauth_consumer_secret) and key 3 (oauth_token_secret) to find the watercress.

This is the end of the process.

The above steps are generally like this.. but some details are different — for example, signature encryption, etc.

This can be carefully understood from my code.

Skiyo Team can take the Douban API to test it.

Get the access_token. If you like to use the open source OAuth library, you can. We at Skiyo understand it for ourself. So we wrote one.

After getting the access_token. Every time you add, delete or change things, you need to sign the URL secret, etc.. Put it in the header.

When you request the API, for example, the URL to publish a broadcast API is http://api.douban.com/miniblog/saying

Every time you request. Douban must check this header.. See what is verified.

For example, when he looks at the header is Authorization: OAuth. Skiyo Blog know that it is OAuth authentication.

At this time he will check the necessary fields, such as oauth_consumer_key.

The rest of you can go to see the OAuth protocol to see my code.

Skiyo Team wrote a double test. You can try it.

You have to apply for an application first. Then modify the address in config.php:

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