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feat: use standalone Twitter OAuth provider instead of goth (#2632)
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// Copyright 2021 The Casdoor Authors. All Rights Reserved. | ||
// | ||
// Licensed under the Apache License, Version 2.0 (the "License"); | ||
// you may not use this file except in compliance with the License. | ||
// You may obtain a copy of the License at | ||
// | ||
// http://www.apache.org/licenses/LICENSE-2.0 | ||
// | ||
// Unless required by applicable law or agreed to in writing, software | ||
// distributed under the License is distributed on an "AS IS" BASIS, | ||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
// See the License for the specific language governing permissions and | ||
// limitations under the License. | ||
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package idp | ||
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import ( | ||
"bytes" | ||
"encoding/base64" | ||
"encoding/json" | ||
"io" | ||
"net/http" | ||
"net/url" | ||
"strings" | ||
"time" | ||
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"golang.org/x/oauth2" | ||
) | ||
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type TwitterIdProvider struct { | ||
Client *http.Client | ||
Config *oauth2.Config | ||
} | ||
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func NewTwitterIdProvider(clientId string, clientSecret string, redirectUrl string) *TwitterIdProvider { | ||
idp := &TwitterIdProvider{} | ||
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config := idp.getConfig(clientId, clientSecret, redirectUrl) | ||
idp.Config = config | ||
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return idp | ||
} | ||
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func (idp *TwitterIdProvider) SetHttpClient(client *http.Client) { | ||
idp.Client = client | ||
} | ||
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// getConfig return a point of Config, which describes a typical 3-legged OAuth2 flow | ||
func (idp *TwitterIdProvider) getConfig(clientId string, clientSecret string, redirectUrl string) *oauth2.Config { | ||
endpoint := oauth2.Endpoint{ | ||
TokenURL: "https://api.twitter.com/2/oauth2/token", | ||
} | ||
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config := &oauth2.Config{ | ||
Scopes: []string{"users.read", "tweet.read"}, | ||
Endpoint: endpoint, | ||
ClientID: clientId, | ||
ClientSecret: clientSecret, | ||
RedirectURL: redirectUrl, | ||
} | ||
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return config | ||
} | ||
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type TwitterAccessToken struct { | ||
AccessToken string `json:"access_token"` // Interface call credentials | ||
TokenType string `json:"token_type"` // Access token type | ||
ExpiresIn int64 `json:"expires_in"` // access_token interface call credential timeout time, unit (seconds) | ||
} | ||
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type TwitterCheckToken struct { | ||
Data TwitterUserInfo `json:"data"` | ||
} | ||
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// TwitterCheckTokenData | ||
// Get more detail via: https://developers.Twitter.com/docs/Twitter-login/guides/advanced/manual-flow#checktoken | ||
type TwitterCheckTokenData struct { | ||
UserId string `json:"user_id"` | ||
} | ||
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// GetToken use code get access_token (*operation of getting code ought to be done in front) | ||
// get more detail via: https://developers.Twitter.com/docs/Twitter-login/guides/advanced/manual-flow#confirm | ||
func (idp *TwitterIdProvider) GetToken(code string) (*oauth2.Token, error) { | ||
params := url.Values{} | ||
// params.Add("client_id", idp.Config.ClientID) | ||
params.Add("redirect_uri", idp.Config.RedirectURL) | ||
params.Add("code_verifier", "casdoor-verifier") | ||
params.Add("code", code) | ||
params.Add("grant_type", "authorization_code") | ||
req, err := http.NewRequest("POST", "https://api.twitter.com/2/oauth2/token", strings.NewReader(params.Encode())) | ||
req.Header.Set("Content-Type", "application/x-www-form-urlencoded") | ||
e := base64.StdEncoding.EncodeToString([]byte(idp.Config.ClientID + ":" + idp.Config.ClientSecret)) | ||
req.Header.Add("Authorization", "Basic "+e) | ||
accessTokenResp, err := idp.GetUrlResp(req) | ||
var TwitterAccessToken TwitterAccessToken | ||
if err = json.Unmarshal([]byte(accessTokenResp), &TwitterAccessToken); err != nil { | ||
return nil, err | ||
} | ||
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token := oauth2.Token{ | ||
AccessToken: TwitterAccessToken.AccessToken, | ||
TokenType: TwitterAccessToken.TokenType, | ||
Expiry: time.Time{}, | ||
} | ||
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return &token, nil | ||
} | ||
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//{ | ||
// "id": "123456789", | ||
// "name": "Example Name", | ||
// "name_format": "{first} {last}", | ||
// "picture": { | ||
// "data": { | ||
// "height": 50, | ||
// "is_silhouette": false, | ||
// "url": "https://example.com", | ||
// "width": 50 | ||
// } | ||
// }, | ||
// "email": "test@example.com" | ||
//} | ||
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type TwitterUserInfo struct { | ||
Id string `json:"id"` // The app user's App-Scoped User ID. This ID is unique to the app and cannot be used by other apps. | ||
Name string `json:"name"` // The person's full name. | ||
UserName string `json:"username"` // The person's name formatted to correctly handle Chinese, Japanese, or Korean ordering. | ||
Picture struct { // The person's profile picture. | ||
Data struct { // This struct is different as https://developers.Twitter.com/docs/graph-api/reference/user/picture/ | ||
Height int `json:"height"` | ||
IsSilhouette bool `json:"is_silhouette"` | ||
Url string `json:"url"` | ||
Width int `json:"width"` | ||
} `json:"data"` | ||
} `json:"picture"` | ||
Email string `json:"email"` // The User's primary email address listed on their profile. This field will not be returned if no valid email address is available. | ||
} | ||
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// GetUserInfo use TwitterAccessToken gotten before return TwitterUserInfo | ||
// get more detail via: https://developers.Twitter.com/docs/graph-api/reference/user | ||
func (idp *TwitterIdProvider) GetUserInfo(token *oauth2.Token) (*UserInfo, error) { | ||
var TwitterUserInfo TwitterUserInfo | ||
// accessToken := token.AccessToken | ||
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req, err := http.NewRequest("GET", "https://api.twitter.com/2/users/me", nil) | ||
req.Header.Set("Content-Type", "application/x-www-form-urlencoded") | ||
req.Header.Add("Authorization", "Bearer "+token.AccessToken) | ||
// req.URL.Query().Set("user.fields", "profile_image_url") | ||
// userIdUrl := fmt.Sprintf("https://graph.Twitter.com/me?access_token=%s", accessToken) | ||
userIdResp, err := idp.GetUrlResp(req) | ||
if err != nil { | ||
return nil, err | ||
} | ||
empTwitterCheckToken := &TwitterCheckToken{} | ||
if err = json.Unmarshal([]byte(userIdResp), &empTwitterCheckToken); err != nil { | ||
return nil, err | ||
} | ||
TwitterUserInfo = empTwitterCheckToken.Data | ||
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userInfo := UserInfo{ | ||
Id: TwitterUserInfo.Id, | ||
Username: TwitterUserInfo.UserName, | ||
DisplayName: TwitterUserInfo.Name, | ||
Email: TwitterUserInfo.Email, | ||
AvatarUrl: TwitterUserInfo.Picture.Data.Url, | ||
} | ||
return &userInfo, nil | ||
} | ||
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func (idp *TwitterIdProvider) GetUrlResp(url *http.Request) (string, error) { | ||
resp, err := idp.Client.Do(url) | ||
if err != nil { | ||
return "", err | ||
} | ||
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defer func(Body io.ReadCloser) { | ||
err := Body.Close() | ||
if err != nil { | ||
return | ||
} | ||
}(resp.Body) | ||
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buf := new(bytes.Buffer) | ||
_, err = buf.ReadFrom(resp.Body) | ||
if err != nil { | ||
return "", err | ||
} | ||
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return buf.String(), nil | ||
} |
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