auth
auth/authcode.go
Add request helpers. Fix a typo in the requestErrConflict constant. Create a response type that is used to build responses before sending them down the wire. Create vars for a few common types of error responses that never change. Create a negotiate middleware function that will respond with a 406 error if the client requests an encoding that we can't support. Create an encode helper that determines the requested encoding and uses it to send the data down the wire. Move our wrap middleware from the oauth2.go file to the request.go file, where it's more likely to be looked for.
1 package auth
3 import (
4 "encoding/json"
5 "errors"
6 "net/http"
7 "time"
9 "code.secondbit.org/uuid"
10 )
12 func init() {
13 RegisterGrantType("authorization_code", GrantType{
14 Validate: authCodeGrantValidate,
15 Invalidate: authCodeGrantInvalidate,
16 IssuesRefresh: true,
17 ReturnToken: RenderJSONToken,
18 })
19 }
21 var (
22 // ErrNoAuthorizationCodeStore is returned when a Context tries to act on a authorizationCodeStore without setting one first.
23 ErrNoAuthorizationCodeStore = errors.New("no authorizationCodeStore was specified for the Context")
24 // ErrAuthorizationCodeNotFound is returned when an AuthorizationCode is requested but not found in the authorizationCodeStore.
25 ErrAuthorizationCodeNotFound = errors.New("authorization code not found in authorizationCodeStore")
26 // ErrAuthorizationCodeAlreadyExists is returned when an AuthorizationCode is added to a authorizationCodeStore, but another AuthorizationCode with the
27 // same Code already exists in the authorizationCodeStore.
28 ErrAuthorizationCodeAlreadyExists = errors.New("authorization code already exists in authorizationCodeStore")
29 )
31 // AuthorizationCode represents an authorization grant made by a user to a Client, to
32 // access user data within a defined Scope for a limited amount of time.
33 type AuthorizationCode struct {
34 Code string
35 Created time.Time
36 ExpiresIn int32
37 ClientID uuid.ID
38 Scope string
39 RedirectURI string
40 State string
41 ProfileID uuid.ID
42 Used bool
43 }
45 type authorizationCodeStore interface {
46 getAuthorizationCode(code string) (AuthorizationCode, error)
47 saveAuthorizationCode(authCode AuthorizationCode) error
48 deleteAuthorizationCode(code string) error
49 useAuthorizationCode(code string) error
50 }
52 func (m *memstore) getAuthorizationCode(code string) (AuthorizationCode, error) {
53 m.authCodeLock.RLock()
54 defer m.authCodeLock.RUnlock()
55 authCode, ok := m.authCodes[code]
56 if !ok {
57 return AuthorizationCode{}, ErrAuthorizationCodeNotFound
58 }
59 return authCode, nil
60 }
62 func (m *memstore) saveAuthorizationCode(authCode AuthorizationCode) error {
63 m.authCodeLock.Lock()
64 defer m.authCodeLock.Unlock()
65 _, ok := m.authCodes[authCode.Code]
66 if ok {
67 return ErrAuthorizationCodeAlreadyExists
68 }
69 m.authCodes[authCode.Code] = authCode
70 return nil
71 }
73 func (m *memstore) deleteAuthorizationCode(code string) error {
74 m.authCodeLock.Lock()
75 defer m.authCodeLock.Unlock()
76 _, ok := m.authCodes[code]
77 if !ok {
78 return ErrAuthorizationCodeNotFound
79 }
80 delete(m.authCodes, code)
81 return nil
82 }
84 func (m *memstore) useAuthorizationCode(code string) error {
85 m.authCodeLock.Lock()
86 defer m.authCodeLock.Unlock()
87 a, ok := m.authCodes[code]
88 if !ok {
89 return ErrAuthorizationCodeNotFound
90 }
91 a.Used = true
92 m.authCodes[code] = a
93 return nil
94 }
96 func authCodeGrantValidate(w http.ResponseWriter, r *http.Request, context Context) (scope string, profileID uuid.ID, valid bool) {
97 enc := json.NewEncoder(w)
98 code := r.PostFormValue("code")
99 if code == "" {
100 w.WriteHeader(http.StatusBadRequest)
101 renderJSONError(enc, "invalid_request")
102 return
103 }
104 clientID, success := verifyClient(w, r, true, context)
105 if !success {
106 return
107 }
108 authCode, err := context.GetAuthorizationCode(code)
109 if err != nil {
110 if err == ErrAuthorizationCodeNotFound {
111 w.WriteHeader(http.StatusBadRequest)
112 renderJSONError(enc, "invalid_grant")
113 return
114 }
115 w.WriteHeader(http.StatusInternalServerError)
116 renderJSONError(enc, "server_error")
117 return
118 }
119 redirectURI := r.PostFormValue("redirect_uri")
120 if authCode.RedirectURI != redirectURI {
121 w.WriteHeader(http.StatusBadRequest)
122 renderJSONError(enc, "invalid_grant")
123 return
124 }
125 if !authCode.ClientID.Equal(clientID) {
126 w.WriteHeader(http.StatusBadRequest)
127 renderJSONError(enc, "invalid_grant")
128 return
129 }
130 return authCode.Scope, authCode.ProfileID, true
131 }
133 func authCodeGrantInvalidate(r *http.Request, context Context) error {
134 code := r.PostFormValue("code")
135 if code == "" {
136 return ErrAuthorizationCodeNotFound
137 }
138 return context.UseAuthorizationCode(code)
139 }