72 lines
1.9 KiB
Go
72 lines
1.9 KiB
Go
package jwt
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import (
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"encoding/json"
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"errors"
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"html/template"
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"time"
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"git.kirsle.net/apps/barertc/pkg/config"
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"github.com/golang-jwt/jwt/v4"
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)
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// Custom JWT Claims.
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type Claims struct {
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// Custom claims.
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IsAdmin bool `json:"op"`
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Avatar string `json:"img"`
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ProfileURL string `json:"url"`
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Nick string `json:"nick"`
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// Standard claims. Notes:
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// subject = username
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jwt.RegisteredClaims
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}
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// ToJSON serializes the claims to JavaScript.
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func (c Claims) ToJSON() template.JS {
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data, _ := json.Marshal(c)
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return template.JS(data)
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}
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// ParseAndValidate returns the Claims, a boolean authOK, and any errors.
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func ParseAndValidate(tokenStr string) (*Claims, bool, error) {
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// Handle a JWT authentication token.
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var (
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claims = &Claims{}
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authOK bool
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)
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if tokenStr != "" {
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token, err := jwt.ParseWithClaims(tokenStr, &Claims{}, func(token *jwt.Token) (interface{}, error) {
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return []byte(config.Current.JWT.SecretKey), nil
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})
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if err != nil {
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return nil, false, err
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}
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if parsed, ok := token.Claims.(*Claims); ok && token.Valid {
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claims = parsed
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authOK = true
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} else {
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return nil, false, errors.New("claims did not parse OK")
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}
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}
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return claims, authOK, nil
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}
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// ReSign will sign a new JWT token for existing claims. The chat server does this to send refreshed tokens
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// to the front-end so the server can reboot gracefully, clients reconnect and not be told their auth had
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// expired. New token expires after 5 minutes.
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func (c Claims) ReSign() (string, error) {
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// Refresh timestamps.
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c.ExpiresAt = jwt.NewNumericDate(time.Now().Add(5 * time.Minute))
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c.IssuedAt = jwt.NewNumericDate(time.Now())
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c.NotBefore = jwt.NewNumericDate(time.Now())
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// Generate the signed token and return it.
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, c)
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ss, err := token.SignedString([]byte(config.Current.JWT.SecretKey))
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return ss, err
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}
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