mirror of https://github.com/vx3r/wg-gen-web.git
104 lines
2.3 KiB
Go
104 lines
2.3 KiB
Go
package github
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import (
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"context"
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"encoding/json"
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"fmt"
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"gitlab.127-0-0-1.fr/vx3r/wg-gen-web/model"
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"golang.org/x/oauth2"
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oauth2Github "golang.org/x/oauth2/github"
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"io/ioutil"
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"net/http"
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"os"
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"time"
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)
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// Github in order to implement interface, struct is required
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type Github struct{}
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var (
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oauth2Config *oauth2.Config
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)
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// Setup validate provider
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func (o *Github) Setup() error {
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oauth2Config = &oauth2.Config{
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ClientID: os.Getenv("OAUTH2_CLIENT_ID"),
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ClientSecret: os.Getenv("OAUTH2_CLIENT_SECRET"),
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RedirectURL: os.Getenv("OAUTH2_REDIRECT_URL"),
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Scopes: []string{"user"},
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Endpoint: oauth2Github.Endpoint,
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}
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return nil
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}
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// CodeUrl get url to redirect client for auth
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func (o *Github) CodeUrl(state string) string {
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return oauth2Config.AuthCodeURL(state)
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}
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// Exchange exchange code for Oauth2 token
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func (o *Github) Exchange(code string) (*oauth2.Token, error) {
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oauth2Token, err := oauth2Config.Exchange(context.TODO(), code)
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if err != nil {
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return nil, err
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}
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return oauth2Token, nil
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}
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// UserInfo get token user
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func (o *Github) UserInfo(oauth2Token *oauth2.Token) (*model.User, error) {
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// https://developer.github.com/apps/building-oauth-apps/authorizing-oauth-apps/
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// we have the token, lets get user information
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req, err := http.NewRequest("GET", "https://api.github.com/user", nil)
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if err != nil {
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return nil, err
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}
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req.Header.Set("Authorization", fmt.Sprintf("token %s", oauth2Token.AccessToken))
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client := &http.Client{}
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resp, err := client.Do(req)
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if err != nil {
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return nil, err
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}
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if resp.StatusCode != 200 {
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return nil, fmt.Errorf("http status %s expect 200 OK", resp.Status)
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}
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bodyBytes, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return nil, err
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}
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defer resp.Body.Close()
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var data map[string]interface{}
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err = json.Unmarshal(bodyBytes, &data)
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if err != nil {
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return nil, err
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}
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// get some infos about user
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user := &model.User{}
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if val, ok := data["name"]; ok && val != nil {
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user.Name = val.(string)
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}
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if val, ok := data["email"]; ok && val != nil {
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user.Email = val.(string)
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}
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if val, ok := data["html_url"]; ok && val != nil {
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user.Profile = val.(string)
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}
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// openid specific
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user.Sub = "github is not an openid provider"
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user.Issuer = "https://github.com"
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user.IssuedAt = time.Now().UTC()
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return user, nil
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}
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