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basic.go
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basic.go
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/*
* Copyright (c) 2018. Abstrium SAS <team (at) pydio.com>
* This file is part of Pydio Cells.
*
* Pydio Cells is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Pydio Cells is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Pydio Cells. If not, see <http://www.gnu.org/licenses/>.
*
* The latest code can be found at <https://pydio.com>.
*/
package auth
import (
"context"
"net/http"
"time"
"github.com/micro/go-micro/metadata"
"github.com/pydio/cells/common"
"github.com/pydio/cells/common/auth/claim"
)
func NewBasicAuthenticator(realm string, ttl time.Duration) *BasicAuthenticator {
ba := &BasicAuthenticator{}
ba.cache = make(map[string]*validBasicUser)
return ba
}
type validBasicUser struct {
Hash string
Connexion time.Time
Claims claim.Claims
}
type BasicAuthenticator struct {
TTL time.Duration
Realm string
cache map[string]*validBasicUser
}
func (b *BasicAuthenticator) Wrap(handler http.Handler) http.HandlerFunc {
return func(w http.ResponseWriter, r *http.Request) {
if user, pass, ok := r.BasicAuth(); ok {
ctx := r.Context()
if valid, vOk := b.cache[user]; vOk && time.Now().Sub(valid.Connexion) <= time.Duration(time.Minute*10) && valid.Hash == pass {
md := map[string]string{}
if meta, ok := metadata.FromContext(ctx); ok {
for k, v := range meta {
md[k] = v
}
}
md[common.PYDIO_CONTEXT_USER_KEY] = valid.Claims.Name
ctx = metadata.NewContext(ctx, md)
r = r.WithContext(context.WithValue(ctx, claim.ContextKey, valid.Claims))
valid.Connexion = time.Now()
handler.ServeHTTP(w, r)
return
}
jwtHelper := DefaultJWTVerifier()
newCtx, claims, err := jwtHelper.PasswordCredentialsToken(ctx, user, pass)
if err == nil {
r = r.WithContext(newCtx)
b.cache[user] = &validBasicUser{
Hash: pass,
Connexion: time.Now(),
Claims: claims,
}
handler.ServeHTTP(w, r)
}
}
w.Header().Set("WWW-Authenticate", `Basic realm="`+b.Realm+`"`)
w.WriteHeader(401)
w.Write([]byte("Unauthorized.\n"))
}
}