func (con Login) Handler(c context.Context) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
l := webfw.GetLogger(c)
sess := webfw.GetSession(c, r)
renderData := renderer.RenderData{}
if r.Method == "GET" {
if v, ok := sess.Flash("form-error"); ok {
renderData["form-error"] = v
}
} else {
if err := r.ParseForm(); err != nil {
l.Fatal(err)
}
username := data.Login(r.Form.Get("username"))
password := r.Form.Get("password")
repo := GetRepo(c)
conf := GetConfig(c)
u := repo.UserByLogin(username)
formError := false
if u.Err() != nil {
sess.SetFlash("form-error", "login-incorrect")
formError = true
} else if !u.Authenticate(password, []byte(conf.Auth.Secret)) {
sess.SetFlash("form-error", "login-incorrect")
formError = true
} else {
sess.Set(AuthUserKey, u)
sess.Set(AuthNameKey, username)
}
if formError {
http.Redirect(w, r, r.URL.String(), http.StatusTemporaryRedirect)
} else {
var returnPath string
if v, ok := sess.Flash("return-to"); ok {
returnPath = v.(string)
} else {
returnPath = webfw.GetDispatcher(c).Pattern
}
http.Redirect(w, r, returnPath, http.StatusTemporaryRedirect)
}
return
}
err := webfw.GetRenderCtx(c, r)(w, renderData, "login.tmpl")
if err != nil {
l.Print(err)
}
}
}
func (con Login) Handler(c context.Context) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
l := webfw.GetLogger(c)
sess := webfw.GetSession(c, r)
data := renderer.RenderData{}
if r.Method == "GET" {
if v, ok := sess.Flash("form-error"); ok {
data["form-error"] = v
}
} else {
if err := r.ParseForm(); err != nil {
l.Fatal(err)
}
username := r.Form.Get("username")
password := r.Form.Get("password")
db := GetDB(c)
formError := false
if u, err := db.GetUser(username); err != nil {
sess.SetFlash("form-error", "login-incorrect")
formError = true
} else if !u.Authenticate(password) {
sess.SetFlash("form-error", "login-incorrect")
formError = true
} else {
sess.Set(authkey, u)
sess.Set(namekey, u.Login)
}
if formError {
http.Redirect(w, r, r.URL.String(), http.StatusTemporaryRedirect)
} else {
var returnPath string
if v, ok := sess.Flash("return-to"); ok {
returnPath = v.(string)
} else {
returnPath = webfw.GetDispatcher(c).Pattern
}
http.Redirect(w, r, returnPath, http.StatusTemporaryRedirect)
}
return
}
err := webfw.GetRenderCtx(c, r)(w, data, "login.tmpl")
if err != nil {
l.Print(err)
}
}
}
func (mw Auth) Handler(ph http.Handler, c context.Context, l *log.Logger) http.Handler {
handler := func(w http.ResponseWriter, r *http.Request) {
for _, prefix := range mw.IgnoreURLPrefix {
if prefix[0] == '/' {
prefix = prefix[1:]
}
if strings.HasPrefix(r.URL.Path, mw.Pattern+prefix+"/") {
ph.ServeHTTP(w, r)
return
}
}
route, _, ok := webfw.GetDispatcher(c).RequestRoute(r)
if !ok {
ph.ServeHTTP(w, r)
return
}
switch ac := route.Controller.(type) {
case AuthController:
if !ac.LoginRequired(c, r) {
ph.ServeHTTP(w, r)
return
}
sess := webfw.GetSession(c, r)
var u User
validUser := false
if uv, ok := sess.Get(authkey); ok {
if u, ok = uv.(User); ok {
validUser = true
}
}
if !validUser {
if uv, ok := sess.Get(namekey); ok {
if n, ok := uv.(string); ok {
var err error
u, err = mw.DB.GetUser(n)
if err == nil {
validUser = true
sess.Set(authkey, u)
} else if _, ok := err.(ValidationError); !ok {
l.Print(err)
}
}
}
}
if validUser && !u.Active {
Debug.Println("User " + u.Login + " is inactive")
validUser = false
}
if !validUser {
d := webfw.GetDispatcher(c)
sess.SetFlash(CtxKey("return-to"), r.URL.Path)
path := d.NameToPath("auth-login", webfw.MethodGet)
if path == "" {
path = "/"
}
http.Redirect(w, r, path, http.StatusMovedPermanently)
return
}
case ApiAuthController:
if !ac.AuthRequired(c, r) {
ph.ServeHTTP(w, r)
return
}
var u User
var err error
auth := r.Header.Get("Authorization")
validUser := false
if auth != "" {
switch {
default:
if !strings.HasPrefix(auth, "Readeef ") {
break
}
auth = auth[len("Readeef "):]
parts := strings.SplitN(auth, ":", 2)
login := parts[0]
u, err = mw.DB.GetUser(login)
if err != nil {
l.Printf("Error getting db user '%s': %v\n", login, err)
break
}
var decoded []byte
decoded, err = base64.StdEncoding.DecodeString(parts[1])
if err != nil {
l.Printf("Error decoding auth header: %v\n", err)
break
}
date := r.Header.Get("X-Date")
t, err := time.Parse(http.TimeFormat, date)
if err != nil || t.Add(30*time.Second).Before(time.Now()) {
break
}
nonce := r.Header.Get("X-Nonce")
if !mw.Nonce.Check(nonce) {
break
}
mw.Nonce.Remove(nonce)
buf := util.BufferPool.GetBuffer()
defer util.BufferPool.Put(buf)
buf.ReadFrom(r.Body)
r.Body = ioutil.NopCloser(buf)
bodyHash := md5.New()
if _, err := bodyHash.Write(buf.Bytes()); err != nil {
l.Printf("Error generating the hash for the request body: %v\n", err)
break
}
contentMD5 := base64.StdEncoding.EncodeToString(bodyHash.Sum(nil))
message := fmt.Sprintf("%s\n%s\n%s\n%s\n%s\n%s\n",
r.RequestURI, r.Method, contentMD5, r.Header.Get("Content-Type"),
date, nonce)
b := make([]byte, base64.StdEncoding.EncodedLen(len(u.MD5API)))
base64.StdEncoding.Encode(b, u.MD5API)
hm := hmac.New(sha256.New, b)
if _, err := hm.Write([]byte(message)); err != nil {
l.Printf("Error generating the hashed message: %v\n", err)
break
}
if !hmac.Equal(hm.Sum(nil), decoded) {
l.Printf("Error matching the supplied auth message to the generated one.\n")
break
}
if !u.Active {
Debug.Println("User " + u.Login + " is inactive")
break
}
validUser = true
}
}
if !validUser {
w.WriteHeader(http.StatusForbidden)
return
}
c.Set(r, context.BaseCtxKey("user"), u)
}
ph.ServeHTTP(w, r)
}
return http.HandlerFunc(handler)
}
func (mw Auth) Handler(ph http.Handler, c context.Context) http.Handler {
logger := webfw.GetLogger(c)
handler := func(w http.ResponseWriter, r *http.Request) {
for _, prefix := range mw.IgnoreURLPrefix {
if prefix[0] == '/' {
prefix = prefix[1:]
}
if strings.HasPrefix(r.URL.Path, mw.Pattern+prefix+"/") {
ph.ServeHTTP(w, r)
return
}
}
route, _, ok := webfw.GetDispatcher(c).RequestRoute(r)
if !ok {
ph.ServeHTTP(w, r)
return
}
repo := GetRepo(c)
switch ac := route.Controller.(type) {
case AuthController:
if !ac.LoginRequired(c, r) {
ph.ServeHTTP(w, r)
return
}
sess := webfw.GetSession(c, r)
var u content.User
validUser := false
if uv, ok := sess.Get(AuthUserKey); ok {
if u, ok = uv.(content.User); ok {
validUser = true
}
}
if !validUser {
if uv, ok := sess.Get(AuthNameKey); ok {
if n, ok := uv.(data.Login); ok {
u = repo.UserByLogin(n)
if u.HasErr() {
logger.Print(u.Err())
} else {
validUser = true
sess.Set(AuthUserKey, u)
}
}
}
}
if validUser && !u.Data().Active {
logger.Infoln("User " + u.Data().Login + " is inactive")
validUser = false
}
if !validUser {
d := webfw.GetDispatcher(c)
sess.SetFlash(CtxKey("return-to"), r.URL.Path)
path := d.NameToPath("auth-login", webfw.MethodGet)
if path == "" {
path = "/"
}
http.Redirect(w, r, path, http.StatusMovedPermanently)
return
}
case ApiAuthController:
if !ac.AuthRequired(c, r) {
ph.ServeHTTP(w, r)
return
}
url, login, signature, nonce, date, t := authData(r)
validUser := false
var u content.User
if login != "" && signature != "" && !t.IsZero() {
switch {
default:
u = repo.UserByLogin(data.Login(login))
if u.HasErr() {
logger.Printf("Error getting db user '%s': %v\n", login, u.Err())
break
}
decoded, err := base64.StdEncoding.DecodeString(signature)
if err != nil {
logger.Printf("Error decoding auth header: %v\n", err)
break
}
if t.Add(30 * time.Second).Before(time.Now()) {
break
}
if !mw.Nonce.Check(nonce) {
break
}
mw.Nonce.Remove(nonce)
buf := util.BufferPool.GetBuffer()
defer util.BufferPool.Put(buf)
buf.ReadFrom(r.Body)
r.Body = ioutil.NopCloser(buf)
bodyHash := md5.New()
if _, err := bodyHash.Write(buf.Bytes()); err != nil {
logger.Printf("Error generating the hash for the request body: %v\n", err)
break
}
contentMD5 := base64.StdEncoding.EncodeToString(bodyHash.Sum(nil))
message := fmt.Sprintf("%s\n%s\n%s\n%s\n%s\n%s\n",
url, r.Method, contentMD5, r.Header.Get("Content-Type"),
date, nonce)
b := make([]byte, base64.StdEncoding.EncodedLen(len(u.Data().MD5API)))
base64.StdEncoding.Encode(b, u.Data().MD5API)
hm := hmac.New(sha256.New, b)
if _, err := hm.Write([]byte(message)); err != nil {
logger.Printf("Error generating the hashed message: %v\n", err)
break
}
if !hmac.Equal(hm.Sum(nil), decoded) {
logger.Printf("Error matching the supplied auth message to the generated one.\n")
break
}
if !u.Data().Active {
logger.Println("User " + u.Data().Login + " is inactive")
break
}
validUser = true
}
}
if validUser {
c.Set(r, context.BaseCtxKey("user"), u)
} else {
if rej, ok := ac.(AuthRejectHandler); ok {
rej.AuthReject(c, r)
} else {
w.WriteHeader(http.StatusUnauthorized)
return
}
}
}
ph.ServeHTTP(w, r)
}
return http.HandlerFunc(handler)
}