92 lines
1.6 KiB
Go
92 lines
1.6 KiB
Go
package auth
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import (
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"net/http"
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"time"
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"github.com/labstack/echo/v4"
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)
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type SessionStore struct {
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s map[TokenID]*Token
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lastCull time.Time
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}
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type TokenID string
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type Token struct { // TODO: jwt bro
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ID TokenID
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Ctime time.Time
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Expires time.Time
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Addr string
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}
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func (ss *SessionStore) init() {
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ss.s = make(map[TokenID]*Token)
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}
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const cullInterval = 5 * time.Minute
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func (ss *SessionStore) cull() {
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if now := time.Now(); now.Sub(ss.lastCull) > cullInterval {
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for k, v := range ss.s {
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if now.After(v.Expires) {
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delete(ss.s, k)
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}
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}
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}
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}
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func (ss *SessionStore) register(t *Token) {
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ss.cull()
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ss.s[t.ID] = t
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}
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func (ss *SessionStore) verify(tr *TokenRequest, r *http.Request) bool {
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if t, hasToken := ss.s[tr.Code]; hasToken {
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// TODO: JWT
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if t.Expires.After(time.Now()) {
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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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const defaultExpiration = 2 * time.Hour
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func (a *Authenticator) NewToken(r *http.Request, f *Flow) TokenID {
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id := TokenID(genUUID())
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t := &Token{
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ID: id,
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Ctime: time.Now(),
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Expires: time.Now().Add(defaultExpiration),
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Addr: r.RemoteAddr,
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}
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a.sessions.register(t)
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return id
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}
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type TokenRequest struct {
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ClientID string `query:"client_id"` // TODO: validate this?
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Code TokenID `query:"code"`
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GrantType string `query:"grant_type"`
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}
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func (a *Authenticator) TokenHandler(c echo.Context) error {
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var rq TokenRequest
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err := c.Bind(&rq)
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if err != nil {
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return err
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}
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if a.sessions.verify(&rq, c.Request()) {
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// TODO: success
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return c.String(http.StatusOK, "token good I guess")
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}
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return c.String(http.StatusUnauthorized, "token bad I guess")
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}
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