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authfront-login-external.go
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/
authfront-login-external.go
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package modifiers
import (
"errors"
"net/url"
"github.com/emicklei/go-restful"
"github.com/gorilla/sessions"
"github.com/ory/fosite"
"github.com/pydio/cells/common/auth"
"github.com/pydio/cells/common/auth/hydra"
"github.com/pydio/cells/common/proto/rest"
"github.com/pydio/cells/common/service/frontend"
)
// LoginExternalAuth allows users having a valid Cells session to create an authorization code directly
func LoginExternalAuth(middleware frontend.AuthMiddleware) frontend.AuthMiddleware {
return func(req *restful.Request, rsp *restful.Response, in *rest.FrontSessionRequest, out *rest.FrontSessionResponse, session *sessions.Session) error {
if a, ok := in.AuthInfo["type"]; !ok || a != "external" { // Ignore this middleware
return middleware(req, rsp, in, out, session)
}
challenge, ok := in.AuthInfo["challenge"]
if !ok {
return errors.New("Challenge is required")
}
accessToken, ok := session.Values["access_token"]
if !ok {
return errors.New("Access token is required")
}
_, claims, err := auth.DefaultJWTVerifier().Verify(req.Request.Context(), accessToken.(string))
if err != nil {
return err
}
code, err := auth.DefaultJWTVerifier().LoginChallengeCode(req.Request.Context(), claims, auth.SetChallenge(challenge))
if err != nil {
return err
}
login, err := hydra.GetLogin(challenge)
if err != nil {
return err
}
requestURL, err := url.Parse(login.GetRequestURL())
if err != nil {
return err
}
requestURLValues := requestURL.Query()
redirectURL, err := fosite.GetRedirectURIFromRequestValues(requestURLValues)
if err != nil {
return err
}
out.RedirectTo = redirectURL + "?code=" + code + "&state=" + requestURLValues.Get("state")
return middleware(req, rsp, in, out, session)
}
}