コード例 #1
0
ファイル: protocol_v2.go プロジェクト: absolute8511/nsq
func (p *protocolV2) AUTH(client *nsqd.ClientV2, params [][]byte) ([]byte, error) {
	state := atomic.LoadInt32(&client.State)
	if state != stateInit {
		nsqd.NsqLogger().LogWarningf("[%s] command in wrong state: %v", client, state)
		return nil, protocol.NewFatalClientErr(nil, E_INVALID, "cannot AUTH in current state")
	}

	if len(params) != 1 {
		return nil, protocol.NewFatalClientErr(nil, E_INVALID, "AUTH invalid number of parameters")
	}

	bodyLen, err := readLen(client.Reader, client.LenSlice)
	if err != nil {
		return nil, protocol.NewFatalClientErr(err, "E_BAD_BODY", "AUTH failed to read body size")
	}

	if int64(bodyLen) > p.ctx.getOpts().MaxBodySize {
		return nil, protocol.NewFatalClientErr(nil, "E_BAD_BODY",
			fmt.Sprintf("AUTH body too big %d > %d", bodyLen, p.ctx.getOpts().MaxBodySize))
	}

	if bodyLen <= 0 {
		return nil, protocol.NewFatalClientErr(nil, "E_BAD_BODY",
			fmt.Sprintf("AUTH invalid body size %d", bodyLen))
	}

	body := make([]byte, bodyLen)
	_, err = io.ReadFull(client.Reader, body)
	if err != nil {
		return nil, protocol.NewFatalClientErr(err, "E_BAD_BODY", "AUTH failed to read body")
	}

	if client.HasAuthorizations() {
		return nil, protocol.NewFatalClientErr(nil, E_INVALID, "AUTH Already set")
	}

	if !p.ctx.isAuthEnabled() {
		return nil, protocol.NewFatalClientErr(err, "E_AUTH_DISABLED", "AUTH Disabled")
	}

	if err = client.Auth(string(body)); err != nil {
		// we don't want to leak errors contacting the auth server to untrusted clients
		nsqd.NsqLogger().Logf("PROTOCOL(V2): [%s] Auth Failed %s", client, err)
		return nil, protocol.NewFatalClientErr(err, "E_AUTH_FAILED", "AUTH failed")
	}

	if !client.HasAuthorizations() {
		return nil, protocol.NewFatalClientErr(nil, "E_UNAUTHORIZED", "AUTH No authorizations found")
	}

	var resp []byte
	resp, err = json.Marshal(struct {
		Identity        string `json:"identity"`
		IdentityURL     string `json:"identity_url"`
		PermissionCount int    `json:"permission_count"`
	}{
		Identity:        client.AuthState.Identity,
		IdentityURL:     client.AuthState.IdentityURL,
		PermissionCount: len(client.AuthState.Authorizations),
	})
	if err != nil {
		return nil, protocol.NewFatalClientErr(err, "E_AUTH_ERROR", "AUTH error "+err.Error())
	}

	err = Send(client, frameTypeResponse, resp)
	if err != nil {
		return nil, protocol.NewFatalClientErr(err, "E_AUTH_ERROR", "AUTH error "+err.Error())
	}

	return nil, nil

}