func (smw Session) Handler(ph http.Handler, c context.Context) http.Handler {
var abspath string
var maxAge, cleanupInterval, cleanupMaxAge time.Duration
if filepath.IsAbs(smw.Path) {
abspath = smw.Path
} else {
var err error
abspath, err = filepath.Abs(path.Join(filepath.Dir(os.Args[0]), smw.Path))
if err != nil {
panic(err)
}
}
if smw.MaxAge != "" {
var err error
maxAge, err = time.ParseDuration(smw.MaxAge)
if err != nil {
panic(err)
}
}
logger := webfw.GetLogger(c)
if smw.CleanupInterval != "" {
var err error
cleanupInterval, err = time.ParseDuration(smw.CleanupInterval)
if err != nil {
panic(err)
}
cleanupMaxAge, err = time.ParseDuration(smw.CleanupMaxAge)
if err != nil {
panic(err)
}
go func() {
for _ = range time.Tick(cleanupInterval) {
logger.Print("Cleaning up old sessions")
if err := context.CleanupSessions(abspath, cleanupMaxAge); err != nil {
logger.Printf("Failed to clean up sessions: %v", err)
}
}
}()
}
handler := func(w http.ResponseWriter, r *http.Request) {
uriParts := strings.SplitN(r.RequestURI, "?", 2)
if uriParts[0] == "" {
uriParts[0] = r.URL.Path
}
ignore := false
for _, prefix := range smw.IgnoreURLPrefix {
if prefix[0] == '/' {
prefix = prefix[1:]
}
if strings.HasPrefix(uriParts[0], smw.Pattern+prefix+"/") {
ignore = true
break
}
if uriParts[0] == smw.Pattern+prefix {
ignore = true
break
}
}
if ignore {
ph.ServeHTTP(w, r)
return
}
firstTimer := false
var sess context.Session
if smw.SessionGenerator == nil {
sess = context.NewSession(smw.Secret, smw.Cipher, abspath)
} else {
sess = smw.SessionGenerator(smw.Secret, smw.Cipher, abspath)
}
sess.SetMaxAge(maxAge)
err := sess.Read(r, c)
if err != nil && err != context.ErrExpired && err != context.ErrNotExist {
sess.SetName(util.UUID())
firstTimer = true
if err != context.ErrCookieNotExist {
logger.Printf("Error reading session: %v", err)
}
}
c.Set(r, context.BaseCtxKey("session"), sess)
c.Set(r, context.BaseCtxKey("firstTimer"), firstTimer)
rec := util.NewRecorderHijacker(w)
ph.ServeHTTP(rec, r)
for k, v := range rec.Header() {
w.Header()[k] = v
}
if sess != nil {
if err := sess.Write(w); err != nil {
logger.Printf("Unable to write session: %v", err)
}
}
w.WriteHeader(rec.GetCode())
w.Write(rec.GetBody().Bytes())
}
return http.HandlerFunc(handler)
}
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 (imw I18N) Handler(ph http.Handler, c context.Context) http.Handler {
for _, l := range imw.Languages {
file, err := fs.DefaultFS.OpenRoot(imw.Dir, l+".all.json")
if err == nil {
var b []byte
if b, err = ioutil.ReadAll(file); err == nil {
err = i18n.ParseTranslationFileBytes(l+".all.json", b)
}
}
if err != nil {
panic(fmt.Sprintf("Error opening locale file '%s.all.json': %v\n", l, err))
}
}
renderer := webfw.GetRenderer(c)
renderer.Funcs(imw.TemplateFuncMap())
handler := func(w http.ResponseWriter, r *http.Request) {
c.Set(r, context.BaseCtxKey("langs"), imw.Languages)
if len(imw.Languages) == 0 {
c.Set(r, context.BaseCtxKey("lang"), "")
ph.ServeHTTP(w, r)
return
}
found := false
uriParts := strings.SplitN(r.RequestURI, "?", 2)
if uriParts[0] == "" {
uriParts[0] = r.URL.Path
}
for _, prefix := range imw.IgnoreURLPrefix {
if prefix[0] == '/' {
prefix = prefix[1:]
}
if strings.HasPrefix(uriParts[0], imw.Pattern+prefix+"/") {
found = true
break
}
if uriParts[0] == imw.Pattern+prefix {
found = true
break
}
}
if !found {
for _, language := range imw.Languages {
if uriParts[0] == imw.Pattern+language {
url := uriParts[0] + "/"
if len(uriParts) > 1 && uriParts[1] != "" {
url += "?" + uriParts[1]
}
http.Redirect(w, r, url, http.StatusFound)
return
}
if strings.HasPrefix(uriParts[0], imw.Pattern+language+"/") {
r.URL.Path = imw.Pattern + r.URL.Path[len(imw.Pattern+language+"/"):]
uriParts[0] = imw.Pattern + uriParts[0][len(imw.Pattern+language+"/"):]
r.RequestURI = strings.Join(uriParts, "?")
c.Set(r, context.BaseCtxKey("lang"), language)
found = true
s := webfw.GetSession(c, r)
s.Set("language", language)
break
}
}
}
if !found {
fallback := webfw.GetFallbackLanguage(c, r, imw.FallbackLanguage)
index := strings.Index(fallback, "-")
short := fallback
if index > -1 {
short = fallback[:index]
}
foundShort := false
for _, language := range imw.Languages {
if language == fallback {
found = true
break
}
if language == short {
foundShort = true
}
}
var language string
if found {
language = fallback
} else if foundShort {
language = short
} else {
language = imw.FallbackLanguage
}
url := imw.Pattern + language + uriParts[0][len(imw.Pattern)-1:]
if len(uriParts) > 1 && uriParts[1] != "" {
url += "?" + uriParts[1]
}
http.Redirect(w, r, url, http.StatusFound)
return
}
ph.ServeHTTP(w, r)
}
return http.HandlerFunc(handler)
}
func (con WebSocket) AuthReject(c context.Context, r *http.Request) {
c.Set(r, readeef.CtxKey("forbidden"), true)
}
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)
}
