commento/api/oauth_gitlab_callback.go

97 lines
2.1 KiB
Go
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2019-02-23 10:54:08 +08:00
package main
import (
"encoding/json"
"fmt"
"golang.org/x/oauth2"
"io/ioutil"
"net/http"
)
func gitlabCallbackHandler(w http.ResponseWriter, r *http.Request) {
commenterToken := r.FormValue("state")
code := r.FormValue("code")
_, err := commenterGetByCommenterToken(commenterToken)
if err != nil && err != errorNoSuchToken {
fmt.Fprintf(w, "Error: %s\n", err.Error())
return
}
token, err := gitlabConfig.Exchange(oauth2.NoContext, code)
if err != nil {
fmt.Fprintf(w, "Error: %s", err.Error())
return
}
resp, err := http.Get("https://gitlab.com/api/v4/user?access_token=" + token.AccessToken)
if err != nil {
fmt.Fprintf(w, "Error: %s", err.Error())
return
}
logger.Infof("%v", resp.StatusCode)
defer resp.Body.Close()
contents, err := ioutil.ReadAll(resp.Body)
if err != nil {
fmt.Fprintf(w, "Error: %s", errorCannotReadResponse.Error())
return
}
user := make(map[string]interface{})
if err := json.Unmarshal(contents, &user); err != nil {
fmt.Fprintf(w, "Error: %s", errorInternal.Error())
return
}
if user["email"] == nil {
fmt.Fprintf(w, "Error: no email address returned by Gitlab")
return
}
email := user["email"].(string)
if user["name"] == nil {
fmt.Fprintf(w, "Error: no name returned by Gitlab")
return
}
name := user["name"].(string)
link := "undefined"
if user["web_url"] != nil {
link = user["web_url"].(string)
}
photo := "undefined"
if user["avatar_url"] != nil {
photo = user["avatar_url"].(string)
}
c, err := commenterGetByEmail("gitlab", email)
if err != nil && err != errorNoSuchCommenter {
fmt.Fprintf(w, "Error: %s", err.Error())
return
}
var commenterHex string
// TODO: in case of returning users, update the information we have on record?
if err == errorNoSuchCommenter {
commenterHex, err = commenterNew(email, name, link, photo, "gitlab", "")
if err != nil {
fmt.Fprintf(w, "Error: %s", err.Error())
return
}
} else {
commenterHex = c.CommenterHex
}
if err := commenterSessionUpdate(commenterToken, commenterHex); err != nil {
fmt.Fprintf(w, "Error: %s", err.Error())
return
}
fmt.Fprintf(w, "<html><script>window.parent.close()</script></html>")
}