mac
115 lines
3.0 KiB
Go
115 lines
3.0 KiB
Go
package auth
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import (
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"errors"
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"time"
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"github.com/golang-jwt/jwt/v5"
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)
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type Claims struct {
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UserID uint64 `json:"uid"`
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Username string `json:"username"`
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Email string `json:"email"`
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IsAdmin bool `json:"admin"`
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jwt.RegisteredClaims
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}
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type OAuthCodeClaims struct {
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UserID uint64 `json:"uid"`
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ClientID string `json:"client_id"`
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RedirectURI string `json:"redirect_uri"`
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jwt.RegisteredClaims
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}
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func Sign(secret, issuer string, ttl time.Duration, userID uint64, username, email string, isAdmin bool) (string, string, time.Time, error) {
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now := time.Now()
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expiresAt := now.Add(ttl)
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tokenID := randomID()
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claims := Claims{
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UserID: userID,
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Username: username,
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Email: email,
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IsAdmin: isAdmin,
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RegisteredClaims: jwt.RegisteredClaims{
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ID: tokenID,
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Issuer: issuer,
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Subject: username,
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Audience: []string{"authserver"},
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IssuedAt: jwt.NewNumericDate(now),
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ExpiresAt: jwt.NewNumericDate(expiresAt),
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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signed, err := token.SignedString([]byte(secret))
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return signed, tokenID, expiresAt, err
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}
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func SignOAuthCode(secret, issuer string, ttl time.Duration, userID uint64, clientID, redirectURI string) (string, string, time.Time, error) {
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now := time.Now()
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expiresAt := now.Add(ttl)
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codeID := randomID()
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claims := OAuthCodeClaims{
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UserID: userID,
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ClientID: clientID,
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RedirectURI: redirectURI,
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RegisteredClaims: jwt.RegisteredClaims{
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ID: codeID,
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Issuer: issuer,
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Subject: clientID,
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Audience: []string{"oauth-code"},
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IssuedAt: jwt.NewNumericDate(now),
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ExpiresAt: jwt.NewNumericDate(expiresAt),
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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signed, err := token.SignedString([]byte(secret))
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return signed, codeID, expiresAt, err
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}
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func Parse(secret string, tokenValue string) (*Claims, error) {
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token, err := jwt.ParseWithClaims(tokenValue, &Claims{}, func(token *jwt.Token) (any, error) {
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if token.Method != jwt.SigningMethodHS256 {
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return nil, errors.New("unexpected jwt signing method")
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}
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return []byte(secret), nil
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})
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if err != nil {
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return nil, err
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}
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claims, ok := token.Claims.(*Claims)
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if !ok || !token.Valid {
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return nil, errors.New("invalid jwt claims")
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}
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return claims, nil
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}
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func ParseOAuthCode(secret string, tokenValue string) (*OAuthCodeClaims, error) {
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token, err := jwt.ParseWithClaims(tokenValue, &OAuthCodeClaims{}, func(token *jwt.Token) (any, error) {
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if token.Method != jwt.SigningMethodHS256 {
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return nil, errors.New("unexpected jwt signing method")
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}
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return []byte(secret), nil
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})
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if err != nil {
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return nil, err
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}
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claims, ok := token.Claims.(*OAuthCodeClaims)
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if !ok || !token.Valid {
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return nil, errors.New("invalid oauth code claims")
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}
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if !claimStringsContains(claims.Audience, "oauth-code") {
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return nil, errors.New("invalid oauth code audience")
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}
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return claims, nil
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}
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func claimStringsContains(values jwt.ClaimStrings, target string) bool {
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for _, value := range values {
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if value == target {
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return true
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}
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}
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return false
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}
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