forked from wrenn/wrenn
pptx704
8e5d426638
- Three-role model (owner/admin/member) with owner protection invariants - Team CRUD: create, rename (admin+), soft-delete with VM cleanup (owner only) - Member management: add by email, remove, role updates (admin+), leave - Switch-team endpoint re-issues JWT after DB membership verification - User email prefix search for add-member UI autocomplete - JWT carries role as a hint; all authorization decisions verified from DB - Team slug: immutable 12-char hex (e.g. a1b2c3-d1e2f3), reserved on soft-delete - Migration adds slug + deleted_at to teams; backfills existing rows
105 lines
3.1 KiB
Go
105 lines
3.1 KiB
Go
package auth
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import (
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"fmt"
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"time"
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"github.com/golang-jwt/jwt/v5"
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)
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const jwtExpiry = 6 * time.Hour
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const hostJWTExpiry = 8760 * time.Hour // 1 year
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// Claims are the JWT payload for user tokens.
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type Claims struct {
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Type string `json:"typ,omitempty"` // empty for user tokens; used to reject host tokens
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TeamID string `json:"team_id"`
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Role string `json:"role"` // owner, admin, or member within TeamID
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Email string `json:"email"`
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jwt.RegisteredClaims
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}
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// SignJWT signs a new 6-hour JWT for the given user.
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func SignJWT(secret []byte, userID, teamID, email, role string) (string, error) {
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now := time.Now()
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claims := Claims{
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TeamID: teamID,
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Role: role,
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Email: email,
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RegisteredClaims: jwt.RegisteredClaims{
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Subject: userID,
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IssuedAt: jwt.NewNumericDate(now),
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ExpiresAt: jwt.NewNumericDate(now.Add(jwtExpiry)),
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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return token.SignedString(secret)
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}
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// VerifyJWT parses and validates a user JWT, returning the claims on success.
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// Rejects host JWTs (which carry a "typ" claim) to prevent cross-token confusion.
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func VerifyJWT(secret []byte, tokenStr string) (Claims, error) {
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token, err := jwt.ParseWithClaims(tokenStr, &Claims{}, func(t *jwt.Token) (any, error) {
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if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, fmt.Errorf("unexpected signing method: %v", t.Header["alg"])
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}
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return secret, nil
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})
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if err != nil {
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return Claims{}, fmt.Errorf("invalid token: %w", err)
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}
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c, ok := token.Claims.(*Claims)
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if !ok || !token.Valid {
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return Claims{}, fmt.Errorf("invalid token claims")
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}
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if c.Type == "host" {
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return Claims{}, fmt.Errorf("invalid token: host token cannot be used as user token")
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}
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return *c, nil
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}
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// HostClaims are the JWT payload for host agent tokens.
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type HostClaims struct {
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Type string `json:"typ"` // always "host"
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HostID string `json:"host_id"`
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jwt.RegisteredClaims
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}
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// SignHostJWT signs a long-lived (1 year) JWT for a registered host agent.
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func SignHostJWT(secret []byte, hostID string) (string, error) {
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now := time.Now()
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claims := HostClaims{
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Type: "host",
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HostID: hostID,
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RegisteredClaims: jwt.RegisteredClaims{
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Subject: hostID,
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IssuedAt: jwt.NewNumericDate(now),
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ExpiresAt: jwt.NewNumericDate(now.Add(hostJWTExpiry)),
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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return token.SignedString(secret)
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}
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// VerifyHostJWT parses and validates a host JWT, returning the claims on success.
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// It rejects user JWTs by checking the "typ" claim.
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func VerifyHostJWT(secret []byte, tokenStr string) (HostClaims, error) {
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token, err := jwt.ParseWithClaims(tokenStr, &HostClaims{}, func(t *jwt.Token) (any, error) {
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if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, fmt.Errorf("unexpected signing method: %v", t.Header["alg"])
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}
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return secret, nil
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})
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if err != nil {
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return HostClaims{}, fmt.Errorf("invalid token: %w", err)
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}
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c, ok := token.Claims.(*HostClaims)
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if !ok || !token.Valid {
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return HostClaims{}, fmt.Errorf("invalid token claims")
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}
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if c.Type != "host" {
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return HostClaims{}, fmt.Errorf("invalid token type: expected host")
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}
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return *c, nil
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}
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