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setting and checking random state in OAuth flow

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This commit is contained in:
Brad Rydzewski 2014-08-09 16:50:45 -07:00
parent e08be916f1
commit f51b4d5ef3
1 changed files with 14 additions and 2 deletions
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16
plugin/remote/github/github.go
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@ -1,6 +1,7 @@
package github
import (
"encoding/base32"
"fmt"
"net/http"
"net/url"
@ -12,11 +13,11 @@ import (
"github.com/drone/drone/shared/httputil"
"github.com/drone/go-github/github"
"github.com/drone/go-github/oauth2"
"github.com/gorilla/securecookie"
)
var (
scope = "repo,repo:status,user:email"
state = "FqB4EbagQ2o"
)
type Github struct {
@ -151,12 +152,23 @@ func (g *Github) GetLogin(w http.ResponseWriter, r *http.Request) (*remote.Login
// get the OAuth code
code := r.FormValue("code")
state := r.FormValue("state")
if len(code) == 0 {
redirect := oauth.AuthorizeRedirect(scope, state)
var random = base32.StdEncoding.EncodeToString(securecookie.GenerateRandomKey(32))
httputil.SetCookie(w, r, "github_state", string(random))
// redirect the user to login
redirect := oauth.AuthorizeRedirect(scope, random)
http.Redirect(w, r, redirect, http.StatusSeeOther)
return nil, nil
}
cookieState := httputil.GetCookie(r, "github_state")
httputil.DelCookie(w, r, "github_state")
if cookieState != state {
return nil, fmt.Errorf("Error matching state in OAuth2 redirect")
}
// exchange code for an auth token
token, err := oauth.GrantToken(code)
if err != nil {