/
session.go
90 lines (83 loc) · 2.37 KB
/
session.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
package op
import (
"context"
"net/http"
"github.com/caos/oidc/pkg/oidc"
"github.com/caos/oidc/pkg/rp"
"github.com/gorilla/schema"
)
type SessionEnder interface {
Decoder() *schema.Decoder
Storage() Storage
IDTokenVerifier() rp.Verifier
DefaultLogoutRedirectURI() string
}
func EndSession(w http.ResponseWriter, r *http.Request, ender SessionEnder) {
req, err := ParseEndSessionRequest(r, ender.Decoder())
if err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
return
}
session, err := ValidateEndSessionRequest(r.Context(), req, ender)
if err != nil {
RequestError(w, r, err)
return
}
var clientID string
if session.Client != nil {
clientID = session.Client.GetID()
}
err = ender.Storage().TerminateSession(r.Context(), session.UserID, clientID)
if err != nil {
RequestError(w, r, ErrServerError("error terminating session"))
return
}
http.Redirect(w, r, session.RedirectURI, http.StatusFound)
}
func ParseEndSessionRequest(r *http.Request, decoder *schema.Decoder) (*oidc.EndSessionRequest, error) {
err := r.ParseForm()
if err != nil {
return nil, ErrInvalidRequest("error parsing form")
}
req := new(oidc.EndSessionRequest)
err = decoder.Decode(req, r.Form)
if err != nil {
return nil, ErrInvalidRequest("error decoding form")
}
return req, nil
}
func ValidateEndSessionRequest(ctx context.Context, req *oidc.EndSessionRequest, ender SessionEnder) (*EndSessionRequest, error) {
session := new(EndSessionRequest)
if req.IdTokenHint == "" {
return session, nil
}
claims, err := ender.IDTokenVerifier().Verify(ctx, "", req.IdTokenHint)
if err != nil {
return nil, ErrInvalidRequest("id_token_hint invalid")
}
session.UserID = claims.Subject
session.Client, err = ender.Storage().GetClientByClientID(ctx, claims.AuthorizedParty)
if err != nil {
return nil, ErrServerError("")
}
if req.PostLogoutRedirectURI == "" {
session.RedirectURI = ender.DefaultLogoutRedirectURI()
return session, nil
}
for _, uri := range session.Client.PostLogoutRedirectURIs() {
if uri == req.PostLogoutRedirectURI {
session.RedirectURI = uri + "?state=" + req.State
return session, nil
}
}
return nil, ErrInvalidRequest("post_logout_redirect_uri invalid")
}
func NeedsExistingSession(authRequest *oidc.AuthRequest) bool {
if authRequest == nil {
return true
}
if authRequest.Prompt == oidc.PromptNone {
return true
}
return false
}