auth
2015-12-14
Parent:cf1aef6eb81f
auth/authcode.go
Break out scopes and events. This repo has gotten unwieldy, and there are portions of it that need to be imported by a large number of other packages. For example, scopes will be used in almost every API we write. Rather than importing the entirety of this codebase into every API we write, I've opted to move the scope logic out into a scopes package, with a subpackage for the defined types, which is all most projects actually want to import. We also define some event type constants, and importing those shouldn't require a project to import all our dependencies, either. So I made an events subpackage that just holds those constants. This package has become a little bit of a red-headed stepchild and is do for a refactor, but I'm trying to put that off as long as I can. The refactoring of our scopes stuff has left a bug wherein a token can be granted for scopes that don't exist. I'm going to need to revisit that, and also how to limit scopes to only be granted to the users that should be able to request them. But that's a battle for another day.
| paddy@26 | 1 package auth |
| paddy@26 | 2 |
| paddy@26 | 3 import ( |
| paddy@84 | 4 "encoding/json" |
| paddy@29 | 5 "errors" |
| paddy@84 | 6 "net/http" |
| paddy@26 | 7 "time" |
| paddy@26 | 8 |
| paddy@181 | 9 "code.secondbit.org/scopes.hg/types" |
| paddy@107 | 10 "code.secondbit.org/uuid.hg" |
| paddy@26 | 11 ) |
| paddy@26 | 12 |
| paddy@84 | 13 func init() { |
| paddy@84 | 14 RegisterGrantType("authorization_code", GrantType{ |
| paddy@84 | 15 Validate: authCodeGrantValidate, |
| paddy@94 | 16 Invalidate: authCodeGrantInvalidate, |
| paddy@84 | 17 IssuesRefresh: true, |
| paddy@85 | 18 ReturnToken: RenderJSONToken, |
| paddy@123 | 19 AllowsPublic: true, |
| paddy@124 | 20 AuditString: authCodeGrantAuditString, |
| paddy@84 | 21 }) |
| paddy@84 | 22 } |
| paddy@84 | 23 |
| paddy@29 | 24 var ( |
| paddy@87 | 25 // ErrNoAuthorizationCodeStore is returned when a Context tries to act on a authorizationCodeStore without setting one first. |
| paddy@87 | 26 ErrNoAuthorizationCodeStore = errors.New("no authorizationCodeStore was specified for the Context") |
| paddy@87 | 27 // ErrAuthorizationCodeNotFound is returned when an AuthorizationCode is requested but not found in the authorizationCodeStore. |
| paddy@87 | 28 ErrAuthorizationCodeNotFound = errors.New("authorization code not found in authorizationCodeStore") |
| paddy@87 | 29 // ErrAuthorizationCodeAlreadyExists is returned when an AuthorizationCode is added to a authorizationCodeStore, but another AuthorizationCode with the |
| paddy@87 | 30 // same Code already exists in the authorizationCodeStore. |
| paddy@87 | 31 ErrAuthorizationCodeAlreadyExists = errors.New("authorization code already exists in authorizationCodeStore") |
| paddy@29 | 32 ) |
| paddy@29 | 33 |
| paddy@87 | 34 // AuthorizationCode represents an authorization grant made by a user to a Client, to |
| paddy@57 | 35 // access user data within a defined Scope for a limited amount of time. |
| paddy@87 | 36 type AuthorizationCode struct { |
| paddy@26 | 37 Code string |
| paddy@26 | 38 Created time.Time |
| paddy@26 | 39 ExpiresIn int32 |
| paddy@26 | 40 ClientID uuid.ID |
| paddy@181 | 41 Scopes scopeTypes.Scopes |
| paddy@26 | 42 RedirectURI string |
| paddy@26 | 43 State string |
| paddy@69 | 44 ProfileID uuid.ID |
| paddy@94 | 45 Used bool |
| paddy@26 | 46 } |
| paddy@26 | 47 |
| paddy@87 | 48 type authorizationCodeStore interface { |
| paddy@87 | 49 getAuthorizationCode(code string) (AuthorizationCode, error) |
| paddy@87 | 50 saveAuthorizationCode(authCode AuthorizationCode) error |
| paddy@87 | 51 deleteAuthorizationCode(code string) error |
| paddy@163 | 52 deleteAuthorizationCodesByProfileID(profileID uuid.ID) error |
| paddy@164 | 53 deleteAuthorizationCodesByClientID(clientID uuid.ID) error |
| paddy@94 | 54 useAuthorizationCode(code string) error |
| paddy@26 | 55 } |
| paddy@29 | 56 |
| paddy@87 | 57 func (m *memstore) getAuthorizationCode(code string) (AuthorizationCode, error) { |
| paddy@87 | 58 m.authCodeLock.RLock() |
| paddy@87 | 59 defer m.authCodeLock.RUnlock() |
| paddy@87 | 60 authCode, ok := m.authCodes[code] |
| paddy@29 | 61 if !ok { |
| paddy@87 | 62 return AuthorizationCode{}, ErrAuthorizationCodeNotFound |
| paddy@29 | 63 } |
| paddy@87 | 64 return authCode, nil |
| paddy@29 | 65 } |
| paddy@29 | 66 |
| paddy@87 | 67 func (m *memstore) saveAuthorizationCode(authCode AuthorizationCode) error { |
| paddy@87 | 68 m.authCodeLock.Lock() |
| paddy@87 | 69 defer m.authCodeLock.Unlock() |
| paddy@87 | 70 _, ok := m.authCodes[authCode.Code] |
| paddy@29 | 71 if ok { |
| paddy@87 | 72 return ErrAuthorizationCodeAlreadyExists |
| paddy@29 | 73 } |
| paddy@87 | 74 m.authCodes[authCode.Code] = authCode |
| paddy@29 | 75 return nil |
| paddy@29 | 76 } |
| paddy@29 | 77 |
| paddy@87 | 78 func (m *memstore) deleteAuthorizationCode(code string) error { |
| paddy@87 | 79 m.authCodeLock.Lock() |
| paddy@87 | 80 defer m.authCodeLock.Unlock() |
| paddy@87 | 81 _, ok := m.authCodes[code] |
| paddy@29 | 82 if !ok { |
| paddy@87 | 83 return ErrAuthorizationCodeNotFound |
| paddy@29 | 84 } |
| paddy@87 | 85 delete(m.authCodes, code) |
| paddy@29 | 86 return nil |
| paddy@29 | 87 } |
| paddy@84 | 88 |
| paddy@163 | 89 func (m *memstore) deleteAuthorizationCodesByProfileID(profileID uuid.ID) error { |
| paddy@163 | 90 m.authCodeLock.Lock() |
| paddy@163 | 91 defer m.authCodeLock.Unlock() |
| paddy@163 | 92 var codes []string |
| paddy@163 | 93 for _, code := range m.authCodes { |
| paddy@163 | 94 if code.ProfileID.Equal(profileID) { |
| paddy@163 | 95 codes = append(codes, code.Code) |
| paddy@163 | 96 } |
| paddy@163 | 97 } |
| paddy@163 | 98 if len(codes) < 1 { |
| paddy@163 | 99 return ErrProfileNotFound |
| paddy@163 | 100 } |
| paddy@163 | 101 for _, code := range codes { |
| paddy@163 | 102 delete(m.authCodes, code) |
| paddy@163 | 103 } |
| paddy@163 | 104 return nil |
| paddy@163 | 105 } |
| paddy@163 | 106 |
| paddy@164 | 107 func (m *memstore) deleteAuthorizationCodesByClientID(clientID uuid.ID) error { |
| paddy@164 | 108 m.authCodeLock.Lock() |
| paddy@164 | 109 defer m.authCodeLock.Unlock() |
| paddy@164 | 110 var codes []string |
| paddy@164 | 111 for _, code := range m.authCodes { |
| paddy@164 | 112 if code.ClientID.Equal(clientID) { |
| paddy@164 | 113 codes = append(codes, code.Code) |
| paddy@164 | 114 } |
| paddy@164 | 115 } |
| paddy@164 | 116 if len(codes) < 1 { |
| paddy@164 | 117 return ErrClientNotFound |
| paddy@164 | 118 } |
| paddy@164 | 119 for _, code := range codes { |
| paddy@164 | 120 delete(m.authCodes, code) |
| paddy@164 | 121 } |
| paddy@164 | 122 return nil |
| paddy@164 | 123 } |
| paddy@164 | 124 |
| paddy@94 | 125 func (m *memstore) useAuthorizationCode(code string) error { |
| paddy@94 | 126 m.authCodeLock.Lock() |
| paddy@94 | 127 defer m.authCodeLock.Unlock() |
| paddy@94 | 128 a, ok := m.authCodes[code] |
| paddy@94 | 129 if !ok { |
| paddy@94 | 130 return ErrAuthorizationCodeNotFound |
| paddy@94 | 131 } |
| paddy@94 | 132 a.Used = true |
| paddy@94 | 133 m.authCodes[code] = a |
| paddy@94 | 134 return nil |
| paddy@94 | 135 } |
| paddy@94 | 136 |
| paddy@181 | 137 func authCodeGrantValidate(w http.ResponseWriter, r *http.Request, context Context) (scopes scopeTypes.Scopes, profileID uuid.ID, valid bool) { |
| paddy@84 | 138 enc := json.NewEncoder(w) |
| paddy@84 | 139 code := r.PostFormValue("code") |
| paddy@84 | 140 if code == "" { |
| paddy@84 | 141 w.WriteHeader(http.StatusBadRequest) |
| paddy@84 | 142 renderJSONError(enc, "invalid_request") |
| paddy@84 | 143 return |
| paddy@84 | 144 } |
| paddy@123 | 145 clientID, _, ok := getClientAuth(w, r, true) |
| paddy@123 | 146 if !ok { |
| paddy@84 | 147 return |
| paddy@84 | 148 } |
| paddy@87 | 149 authCode, err := context.GetAuthorizationCode(code) |
| paddy@84 | 150 if err != nil { |
| paddy@87 | 151 if err == ErrAuthorizationCodeNotFound { |
| paddy@84 | 152 w.WriteHeader(http.StatusBadRequest) |
| paddy@84 | 153 renderJSONError(enc, "invalid_grant") |
| paddy@84 | 154 return |
| paddy@84 | 155 } |
| paddy@84 | 156 w.WriteHeader(http.StatusInternalServerError) |
| paddy@84 | 157 renderJSONError(enc, "server_error") |
| paddy@84 | 158 return |
| paddy@84 | 159 } |
| paddy@85 | 160 redirectURI := r.PostFormValue("redirect_uri") |
| paddy@87 | 161 if authCode.RedirectURI != redirectURI { |
| paddy@84 | 162 w.WriteHeader(http.StatusBadRequest) |
| paddy@84 | 163 renderJSONError(enc, "invalid_grant") |
| paddy@84 | 164 return |
| paddy@84 | 165 } |
| paddy@87 | 166 if !authCode.ClientID.Equal(clientID) { |
| paddy@84 | 167 w.WriteHeader(http.StatusBadRequest) |
| paddy@84 | 168 renderJSONError(enc, "invalid_grant") |
| paddy@84 | 169 return |
| paddy@84 | 170 } |
| paddy@135 | 171 return authCode.Scopes, authCode.ProfileID, true |
| paddy@84 | 172 } |
| paddy@90 | 173 |
| paddy@90 | 174 func authCodeGrantInvalidate(r *http.Request, context Context) error { |
| paddy@94 | 175 code := r.PostFormValue("code") |
| paddy@94 | 176 if code == "" { |
| paddy@94 | 177 return ErrAuthorizationCodeNotFound |
| paddy@94 | 178 } |
| paddy@94 | 179 return context.UseAuthorizationCode(code) |
| paddy@90 | 180 } |
| paddy@124 | 181 |
| paddy@124 | 182 func authCodeGrantAuditString(r *http.Request) string { |
| paddy@124 | 183 return "authcode:" + r.PostFormValue("code") |
| paddy@124 | 184 } |