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session.go
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session.go
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/*
* Copyright (c) 2019-2021. 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 frontend
import (
"net/http"
"strings"
"go.uber.org/zap"
"github.com/pydio/cells/v4/common/auth"
"github.com/pydio/cells/v4/common/log"
"github.com/pydio/cells/v4/common/service/frontend/sessions"
)
// NewSessionWrapper creates a Http middleware checking if a cookie is passed
// along and if this cookie contains a proper JWT.
// The excludes parameter may be used to namely ignore specific "METHOD:/URI“ for this check.
func NewSessionWrapper(h http.Handler, dao sessions.DAO, excludes ...string) http.Handler {
jwtVerifier := auth.DefaultJWTVerifier()
return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
for _, excluded := range excludes {
split := strings.Split(excluded, ":")
method := split[0]
uri := split[1]
if strings.EqualFold(method, r.Method) && strings.HasPrefix(r.RequestURI, uri) {
log.Logger(r.Context()).Debug("Skipping session wrapper by exclusion:" + excluded)
h.ServeHTTP(w, r)
return
}
}
session, err := dao.GetSession(r)
if err != nil && !strings.Contains(err.Error(), "securecookie: the value is not valid") {
log.Logger(r.Context()).Error("Cannot retrieve session", zap.Error(err))
}
if value, ok := session.Values["access_token"]; ok {
ctx := r.Context()
if ctx, _, err = jwtVerifier.Verify(ctx, value.(string)); err == nil {
// Update context
log.Logger(ctx).Debug("Found token in session " + session.Name())
r = r.WithContext(ctx)
}
}
h.ServeHTTP(w, r)
})
}