71 lines
1.4 KiB
Go
71 lines
1.4 KiB
Go
package jwt
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import (
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"encoding/base64"
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"encoding/json"
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"errors"
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"net/http"
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)
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var (
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ErrMissingConfig = errors.New("missing configuration")
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ErrMissingSecret = errors.New("please provide a shared secret")
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ErrMissingAuthFunc = errors.New("please provide an auth function")
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)
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type Config struct {
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Secret string
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Auth AuthFunc
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}
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type AuthFunc func(string, string) (bool, error)
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type JWTMiddleware struct {
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secret string
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auth AuthFunc
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}
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func NewMiddleware(c *Config) (*JWTMiddleware, error) {
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if c == nil {
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return nil, ErrMissingConfig
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}
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if c.Secret == "" {
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return nil, ErrMissingSecret
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}
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if c.Auth == nil {
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return nil, ErrMissingAuthFunc
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}
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m := &JWTMiddleware{
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secret: c.Secret,
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auth: c.Auth,
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}
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return m, nil
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}
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func (m *JWTMiddleware) Secure(h http.Handler) http.Handler {
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// This is just a placeholder for now
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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h.ServeHTTP(w, r)
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})
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}
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func (m *JWTMiddleware) GenerateToken(w http.ResponseWriter, r *http.Request) {
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var b map[string]string
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err := json.NewDecoder(r.Body).Decode(&b)
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if err != nil {
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panic(err)
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}
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result, err := m.auth(b["email"], b["password"])
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if err != nil {
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panic(err)
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}
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if !result {
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panic("deal with this")
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}
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// For now, the header will be static
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resp := `{"typ":"JWT","alg":"HS256"}`
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resp = base64.StdEncoding.EncodeToString([]byte(resp))
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w.Write([]byte(resp))
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}
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