262 lines
7 KiB
Go
262 lines
7 KiB
Go
package user
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import (
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"encoding/json"
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"errors"
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"fmt"
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"time"
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"net/mail"
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"net/url"
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"github.com/jonboulle/clockwork"
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"github.com/pborman/uuid"
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"github.com/coreos/dex/repo"
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"github.com/coreos/go-oidc/jose"
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"github.com/coreos/go-oidc/key"
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"github.com/coreos/go-oidc/oidc"
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)
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const (
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MaxEmailLength = 200
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// ClaimPasswordResetPassword represents the hash of the password to be
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// reset; in other words, the old password
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ClaimPasswordResetPassword = "http://coreos.com/password/old-hash"
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// ClaimEmailVerificationEmail represents the email to be verified. Note
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// that we are intentionally not using the "email" claim for this purpose.
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ClaimEmailVerificationEmail = "http://coreos.com/email/verificationEmail"
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// ClaimPasswordResetCallback represents where a user should be sent after
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// resetting their password.
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ClaimPasswordResetCallback = "http://coreos.com/password/reset-callback"
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// Claim representing where a user should be sent after verifying their email address.
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ClaimEmailVerificationCallback = "http://coreos.com/email/verification-callback"
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// Claim representing where a user should be sent after responding to an invitation
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ClaimInvitationCallback = "http://coreos.com/invitation/callback"
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)
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var (
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clock = clockwork.NewRealClock()
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)
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func assertStringClaim(claims jose.Claims, k string) string {
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s, ok, err := claims.StringClaim(k)
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if !ok || err != nil {
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panic(fmt.Sprintf("claims were not validated correctly, missing or wrong claim: %v", k))
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}
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return s
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}
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func assertURLClaim(claims jose.Claims, k string) *url.URL {
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ustring := assertStringClaim(claims, k)
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ret, err := url.Parse(ustring)
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if err != nil {
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panic(fmt.Sprintf("url claim was not validated correctly: %v", k))
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}
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return ret
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}
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type UserIDGenerator func() (string, error)
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func DefaultUserIDGenerator() (string, error) {
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return uuid.New(), nil
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}
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type User struct {
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// ID is the machine-generated, stable, unique identifier for this User.
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ID string
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// DisplayName is human readable name meant for display purposes.
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// DisplayName is not neccesarily unique with a UserRepo.
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DisplayName string
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Email string
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EmailVerified bool
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Admin bool
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Disabled bool
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CreatedAt time.Time
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}
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type UserFilter struct {
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// TODO(bobbyrullo): actually put stuff in here.
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}
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// AddToClaims adds basic information about the user to the given Claims.
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// http://openid.net/specs/openid-connect-core-1_0.html#StandardClaims
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func (u *User) AddToClaims(claims jose.Claims) {
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claims.Add("name", u.DisplayName)
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if u.Email != "" {
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claims.Add("email", u.Email)
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if u.EmailVerified {
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claims.Add("email_verified", true)
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}
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}
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}
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// UserRepo implementations maintain a persistent set of users.
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// The following invariants must be maintained:
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// * Users must have a unique Email and ID
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// * No other Users may have the same RemoteIdentity as one of the
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// users. (This constraint may be relaxed in the future)
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type UserRepo interface {
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Get(tx repo.Transaction, id string) (User, error)
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// List returns a list of users meeting the given conditions.
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// A nextPageToken is returned when there are further results to be had,
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// with the expectation that it will be passed into a subsequent List
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// call. When nextPageToken is non-empty filter and maxResults are ignored.
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List(tx repo.Transaction, filter UserFilter, maxResults int, nextPageToken string) ([]User, string, error)
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Create(repo.Transaction, User) error
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GetByEmail(tx repo.Transaction, email string) (User, error)
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Disable(tx repo.Transaction, id string, disabled bool) error
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Update(repo.Transaction, User) error
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GetByRemoteIdentity(repo.Transaction, RemoteIdentity) (User, error)
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AddRemoteIdentity(tx repo.Transaction, userID string, remoteID RemoteIdentity) error
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RemoveRemoteIdentity(tx repo.Transaction, userID string, remoteID RemoteIdentity) error
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GetRemoteIdentities(tx repo.Transaction, userID string) ([]RemoteIdentity, error)
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GetAdminCount(repo.Transaction) (int, error)
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}
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var (
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ErrorDuplicateID = errors.New("ID not available")
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ErrorDuplicateEmail = errors.New("email not available")
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ErrorDuplicateRemoteIdentity = errors.New("remote identity already in use for another user")
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ErrorInvalidEmail = errors.New("invalid Email")
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ErrorInvalidID = errors.New("invalid ID")
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ErrorNotFound = errors.New("user not found in repository")
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)
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// RemoteIdentity represents a User's identity at an IDP.
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type RemoteIdentity struct {
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// IDPCID is the identifier of the IDP which hosts this identity.
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ConnectorID string
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// ID is the identifier of this User at the IDP.
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ID string
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}
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func ValidEmail(email string) bool {
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address, err := mail.ParseAddress(email)
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if err != nil {
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return false
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}
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// Has mail.ParseAddress parsed the entire string and only found a single
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// address without a name?
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return address.Address == email
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}
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func ValidPassword(plaintext string) bool {
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return len(plaintext) > 5
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}
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type UserWithRemoteIdentities struct {
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User User `json:"user"`
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RemoteIdentities []RemoteIdentity `json:"remoteIdentities"`
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}
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func (u *User) UnmarshalJSON(data []byte) error {
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var dec struct {
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ID string `json:"id"`
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DisplayName string `json:"displayName"`
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Email string `json:"email"`
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EmailVerified bool `json:"emailVerified"`
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}
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err := json.Unmarshal(data, &dec)
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if err != nil {
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return fmt.Errorf("invalid User entry: %v", err)
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}
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u.ID = dec.ID
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u.DisplayName = dec.DisplayName
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u.Email = dec.Email
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u.EmailVerified = dec.EmailVerified
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return nil
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}
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func (u *RemoteIdentity) UnmarshalJSON(data []byte) error {
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var dec struct {
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ConnectorID string `json:"connectorID"`
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ID string `json:"id"`
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}
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err := json.Unmarshal(data, &dec)
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if err != nil {
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return fmt.Errorf("invalid RemoteIdentity entry: %v", err)
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}
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u.ID = dec.ID
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u.ConnectorID = dec.ConnectorID
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return nil
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}
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type TokenClaims struct {
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Claims jose.Claims
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}
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// Returns TokenClaims if and only if
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// - the given token string is an appropriately formatted JWT
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// - the JWT contains nonempty "aud" and "sub" claims
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// - the JWT can be verified for the client associated with the "aud" claim
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// using the given keys
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func parseAndVerifyTokenClaims(token string, issuer url.URL, keys []key.PublicKey) (TokenClaims, error) {
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jwt, err := jose.ParseJWT(token)
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if err != nil {
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return TokenClaims{}, err
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}
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claims, err := jwt.Claims()
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if err != nil {
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return TokenClaims{}, err
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}
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clientID, ok, err := claims.StringClaim("aud")
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if err != nil {
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return TokenClaims{}, err
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}
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if !ok || clientID == "" {
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return TokenClaims{}, errors.New("no aud(client ID) claim")
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}
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sub, ok, err := claims.StringClaim("sub")
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if err != nil {
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return TokenClaims{}, err
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}
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if !ok || sub == "" {
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return TokenClaims{}, errors.New("no sub claim")
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}
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noop := func() error { return nil }
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keysFunc := func() []key.PublicKey {
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return keys
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}
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verifier := oidc.NewJWTVerifier(issuer.String(), clientID, noop, keysFunc)
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if err := verifier.Verify(jwt); err != nil {
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return TokenClaims{}, err
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}
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return TokenClaims{claims}, nil
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}
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