woodpecker/server/session/session.go
2014-09-30 00:43:50 -07:00

71 lines
2 KiB
Go

package session
import (
"fmt"
"net/http"
"time"
"code.google.com/p/go.net/context"
"github.com/dgrijalva/jwt-go"
"github.com/drone/drone/server/datastore"
"github.com/drone/drone/shared/httputil"
"github.com/drone/drone/shared/model"
"github.com/gorilla/securecookie"
)
// secret key used to create jwt
var secret = securecookie.GenerateRandomKey(32)
// GetUser gets the currently authenticated user for the
// http.Request. The user details will be stored as either
// a simple API token or JWT bearer token.
func GetUser(c context.Context, r *http.Request) *model.User {
switch {
case r.Header.Get("Authorization") != "":
return getUserBearer(c, r)
case r.FormValue("access_token") != "":
return getUserToken(c, r)
default:
return nil
}
}
// GenerateToken generates a JWT token for the user session
// that can be appended to the #access_token segment to
// facilitate client-based OAuth2.
func GenerateToken(c context.Context, r *http.Request, user *model.User) (string, error) {
token := jwt.New(jwt.GetSigningMethod("HS256"))
token.Claims["user_id"] = user.ID
token.Claims["audience"] = httputil.GetURL(r)
token.Claims["expires"] = time.Now().UTC().Add(time.Hour * 72).Unix()
return token.SignedString(secret)
}
// getUserToken gets the currently authenticated user for the given
// auth token.
func getUserToken(c context.Context, r *http.Request) *model.User {
var token = r.FormValue("access_token")
var user, _ = datastore.GetUserToken(c, token)
return user
}
// getUserBearer gets the currently authenticated user for the given
// bearer token (JWT)
func getUserBearer(c context.Context, r *http.Request) *model.User {
var tokenstr = r.Header.Get("Authorization")
fmt.Sscanf(tokenstr, "Bearer %s", &tokenstr)
var token, err = jwt.Parse(tokenstr, func(t *jwt.Token) (interface{}, error) {
return secret, nil
})
if err != nil || !token.Valid {
println("invalid token")
return nil
}
var userid, ok = token.Claims["user_id"].(float64)
if !ok {
return nil
}
var user, _ = datastore.GetUser(c, int64(userid))
return user
}