-
Notifications
You must be signed in to change notification settings - Fork 3
/
session_reader.go
78 lines (61 loc) · 1.48 KB
/
session_reader.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
package session
import (
"context"
"errors"
"fmt"
"net/http"
"github.com/nais/wonderwall/pkg/config"
"github.com/nais/wonderwall/pkg/crypto"
"github.com/nais/wonderwall/pkg/retry"
)
var _ Reader = &reader{}
type reader struct {
cfg *config.Config
cookieCrypter crypto.Crypter
store Store
}
func NewReader(cfg *config.Config, cookieCrypter crypto.Crypter) (Reader, error) {
store, err := NewStore(cfg)
if err != nil {
return nil, err
}
return &reader{
cfg: cfg,
cookieCrypter: cookieCrypter,
store: store,
}, nil
}
func (in *reader) Get(r *http.Request) (*Session, error) {
ticket, err := getTicket(r, in.cookieCrypter)
if err != nil {
return nil, err
}
return in.getForTicket(r.Context(), ticket)
}
func (in *reader) getForTicket(ctx context.Context, ticket *Ticket) (*Session, error) {
var encrypted *EncryptedData
var err error
retryable := func(ctx context.Context) error {
encrypted, err = in.store.Read(ctx, ticket.Key())
if err == nil {
return nil
}
if errors.Is(err, ErrNotFound) {
return err
}
return retry.RetryableError(err)
}
if err := retry.Do(ctx, retryable); err != nil {
return nil, fmt.Errorf("reading from store: %w", err)
}
data, err := encrypted.Decrypt(ticket.Crypter())
if err != nil {
return nil, fmt.Errorf("%w: decrypting session data: %w", ErrInvalid, err)
}
sess := NewSession(data, ticket)
err = data.Validate()
if err != nil {
return sess, err
}
return sess, nil
}