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keyHandler.go
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keyHandler.go
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package handlers
import (
"bytes"
"encoding/json"
"fmt"
"github.com/GerardSoleCa/PubKeyManager/domain"
"github.com/GerardSoleCa/PubKeyManager/server/utils"
"github.com/codegangsta/negroni"
"github.com/gorilla/mux"
"github.com/gorilla/sessions"
"github.com/op/go-logging"
"net/http"
"strconv"
)
var glog = logging.MustGetLogger("keys")
// KeyInteractor interface
type KeyInteractor interface {
AddKey(key *domain.Key) error
GetKeys() []domain.Key
GetUserKeys(user string) []domain.Key
DeleteKey(id int64) error
}
// KeyServiceHandler struct
type KeyServiceHandler struct {
utils.HttpUtils
KeyInteractor KeyInteractor
Session *sessions.CookieStore
}
// ConfigureKeysRouter configures router routes for key management
func ConfigureKeysRouter(router *mux.Router, interactor KeyInteractor, session *sessions.CookieStore) {
glog.Info("ConfigureKeysRouter")
handler := KeyServiceHandler{}
handler.KeyInteractor = interactor
handler.Session = session
router.Path("/keys/{user}").HandlerFunc(handler.getUserKeys).Methods("GET")
secureRouter := mux.NewRouter().PathPrefix("/keys").Subrouter().StrictSlash(false)
router.PathPrefix("/keys").Handler(negroni.New(
negroni.HandlerFunc(handler.AuthMiddleware),
negroni.Wrap(secureRouter),
))
secureRouter.Path("/").HandlerFunc(handler.postKey).Methods("POST")
secureRouter.Path("/").HandlerFunc(handler.getKeys).Methods("GET")
secureRouter.Path("/{id}").HandlerFunc(handler.deleteKey).Methods("DELETE")
}
func (handler KeyServiceHandler) getKeys(rw http.ResponseWriter, q *http.Request) {
glog.Info("ConfigureKeysRouter -> getKeys")
keys := handler.KeyInteractor.GetKeys()
var response bytes.Buffer
encoder := json.NewEncoder(&response)
encoder.Encode(keys)
handler.Ok(rw, response.String())
}
func (handler KeyServiceHandler) getUserKeys(rw http.ResponseWriter, q *http.Request) {
glog.Info("ConfigureKeysRouter -> getUserKeys")
user := mux.Vars(q)["user"]
if user == "" {
handler.BadRequest(rw)
return
}
keys := handler.KeyInteractor.GetUserKeys(user)
if len(keys) == 0 {
handler.BadRequest(rw)
return
}
glog.Infof("Retrieving %d keys", len(keys))
rw.WriteHeader(200)
for _, k := range keys {
fmt.Fprintln(rw, k.Key)
}
}
func (handler KeyServiceHandler) postKey(rw http.ResponseWriter, q *http.Request) {
glog.Info("ConfigureKeysRouter -> putKeys")
key := &domain.Key{}
if handler.ParseBody(q.Body, key) != nil {
handler.BadRequest(rw)
return
}
if err := handler.KeyInteractor.AddKey(key); err != nil {
handler.ErrorResponse(rw, &utils.ApiError{Code: 500, Err: err.Error()})
return
}
handler.CreatedWithBody(rw, key)
}
func (handler KeyServiceHandler) deleteKey(rw http.ResponseWriter, q *http.Request) {
glog.Info("ConfigureKeysRouter -> putKeys")
idPathParam := mux.Vars(q)["id"]
if idPathParam == "" {
handler.BadRequest(rw)
return
}
id, err := strconv.ParseInt(idPathParam, 10, 64)
if err != nil {
handler.BadRequest(rw)
return
}
if err = handler.KeyInteractor.DeleteKey(id); err != nil {
handler.InternalServerError(rw)
return
}
handler.NoContent(rw)
}
// AuthMiddleware function contained on KeyServiceHandler
func (handler KeyServiceHandler) AuthMiddleware(rw http.ResponseWriter, q *http.Request, next http.HandlerFunc) {
glog.Infof("AuthMiddleware")
session, _ := handler.Session.Get(q, "authenticated")
if _, ok := session.Values["id"]; !ok {
handler.Unauthorized(rw)
return
}
if _, ok := session.Values["name"]; !ok {
handler.Unauthorized(rw)
return
}
next(rw, q)
}