/
middleware.go
74 lines (66 loc) · 1.59 KB
/
middleware.go
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package main
import (
"errors"
"io/ioutil"
"log"
"net/http"
"github.com/codegangsta/negroni"
"github.com/dgrijalva/jwt-go"
"github.com/gorilla/context"
"gopkg.in/mgo.v2"
)
const publicKey = "keys/app.rsa.pub"
var (
verifyKey []byte
)
func init() {
var err error
verifyKey, err = ioutil.ReadFile(publicKey)
if err != nil {
log.Fatal("Error reading Private key")
return
}
}
func JWTMiddleware() negroni.Handler {
return negroni.HandlerFunc(func(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
if h := r.Header.Get("Authorization"); h != "" {
token, err := jwt.ParseFromRequest(r, func(token *jwt.Token) (interface{}, error) {
return verifyKey, nil
})
switch err.(type) {
case nil:
if !token.Valid {
NotAllowed(w, r)
return
}
context.Set(r, "token", token)
next(w, r)
case *jwt.ValidationError:
vErr := err.(*jwt.ValidationError)
switch vErr.Errors {
case jwt.ValidationErrorExpired:
BR(w, r, errors.New("Token Expired"), http.StatusUnauthorized)
return
default:
BR(w, r, errors.New("Bad Token"), http.StatusUnauthorized)
log.Println(vErr.Error())
return
}
default:
ISR(w, r, err)
return
}
} else {
BR(w, r, errors.New("Missing Token"), http.StatusUnauthorized)
}
})
}
func DBMiddleware(session *mgo.Session, dbName string) negroni.Handler {
return negroni.HandlerFunc(func(w http.ResponseWriter, r *http.Request, next http.HandlerFunc) {
s := session.Clone()
defer s.Close()
context.Set(r, "dbSession", s)
context.Set(r, "DB", s.DB(dbName))
next(w, r)
})
}