149 lines
3.5 KiB
C
149 lines
3.5 KiB
C
#include "wtp.h"
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#include "capwap_dfa.h"
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#include "dfa.h"
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#include "radio.h"
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/* */
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static void wtp_dfa_state_dtlsconnect_timeout(EV_P_ ev_timer *w, int revents)
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{
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log_printf(LOG_DEBUG, "DTLS Connect Timeout");
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wtp_teardown_connection();
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}
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/* */
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void wtp_dfa_state_dead_enter(void)
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{
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ev_break(EV_DEFAULT_UC_ EVBREAK_ALL);
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}
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/* */
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void wtp_dfa_state_dtlsconnect_enter(void)
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{
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ev_timer_init(&g_wtp.timercontrol, wtp_dfa_state_dtlsconnect_timeout,
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WTP_DTLS_INTERVAL / 1000.0, 0.);
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ev_timer_start(EV_DEFAULT_UC_ &g_wtp.timercontrol);
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}
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/* */
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void wtp_start_dtlssetup(void)
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{
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/* Create DTLS session */
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if (!capwap_crypt_createsession(&g_wtp.dtls, &g_wtp.dtlscontext)) {
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wtp_dfa_change_state(CAPWAP_SULKING_STATE);
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return;
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}
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if (capwap_crypt_open(&g_wtp.dtls) == CAPWAP_HANDSHAKE_ERROR) {
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wtp_abort_connecting();
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} else
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wtp_dfa_change_state(CAPWAP_DTLS_CONNECT_STATE);
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}
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/* */
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void wtp_start_datachannel(void)
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{
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union sockaddr_capwap dataaddr;
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/* Set AC data address */
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memcpy(&dataaddr, &g_wtp.dtls.peeraddr, sizeof(union sockaddr_capwap));
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CAPWAP_SET_NETWORK_PORT(&dataaddr, (CAPWAP_GET_NETWORK_PORT(&g_wtp.dtls.peeraddr) + 1));
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#ifdef DEBUG
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{
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char addr[INET6_ADDRSTRLEN];
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log_printf(LOG_DEBUG, "Create data channel with peer %s:%d",
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capwap_address_to_string(&dataaddr, addr, INET6_ADDRSTRLEN),
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(int)CAPWAP_GET_NETWORK_PORT(&dataaddr));
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}
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#endif
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/* Bind data address and Connect to AC data channel */
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if (wtp_kmod_create(g_wtp.net.localaddr.ss.ss_family, &dataaddr.ss, &g_wtp.sessionid, g_wtp.mtu) != 0) {
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/* Error to send packets */
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log_printf(LOG_ERR, "Error to send data channel keepalive packet");
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wtp_teardown_connection();
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return;
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}
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log_printf(LOG_ERR, "Data channel connected");
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/* Reset AC Prefered List Position */
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g_wtp.acpreferedselected = 0;
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/* Set timer */
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wtp_dfa_change_state(CAPWAP_RUN_STATE);
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}
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/* */
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static void wtp_dfa_state_dtlsteardown_timeout(EV_P_ ev_timer *w, int revents)
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{
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/* Free and reset resource */
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if (g_wtp.dtls.enable)
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capwap_crypt_freesession(&g_wtp.dtls);
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/* */
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if (g_wtp.acname.name) {
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capwap_free(g_wtp.acname.name);
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g_wtp.acname.name = NULL;
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}
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wtp_socket_io_stop();
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capwap_close_sockets(&g_wtp.net);
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/* */
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wtp_reset_state();
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/* */
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if (!g_wtp.running) {
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wtp_dfa_change_state(CAPWAP_DEAD_STATE);
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} else if ((g_wtp.faileddtlssessioncount >= WTP_FAILED_DTLS_SESSION_RETRY) ||
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(g_wtp.faileddtlsauthfailcount >= WTP_FAILED_DTLS_SESSION_RETRY)) {
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wtp_dfa_change_state(CAPWAP_SULKING_STATE);
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} else
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wtp_dfa_change_state(CAPWAP_IDLE_STATE);
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}
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/* */
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void wtp_dfa_state_dtlsteardown_enter(void)
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{
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wtp_timeout_stop_all();
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ev_timer_init(&g_wtp.timercontrol, wtp_dfa_state_dtlsteardown_timeout,
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WTP_DTLS_SESSION_DELETE / 1000.0, 0.);
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ev_timer_start(EV_DEFAULT_UC_ &g_wtp.timercontrol);
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}
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/* */
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void wtp_dfa_state_dtlsteardown(struct capwap_parsed_packet* packet) {
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}
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/* Teardown connection */
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void wtp_teardown_connection(void)
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{
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g_wtp.teardown = 1;
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wtp_radio_reset();
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ev_io_stop(EV_DEFAULT_UC_ &g_wtp.socket_ev);
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/* DTLS Control */
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if (g_wtp.dtls.enable)
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capwap_crypt_close(&g_wtp.dtls);
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/* Close data channel session */
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wtp_kmod_resetsession();
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wtp_dfa_change_state(CAPWAP_DTLS_TEARDOWN_STATE);
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}
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/* abort a possible DTLS connection before the handshake complete */
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void wtp_abort_connecting(void)
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{
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/* DTLS Control */
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if (g_wtp.dtls.enable)
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capwap_crypt_close(&g_wtp.dtls);
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/* close the control Socket */
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wtp_socket_io_stop();
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capwap_close_sockets(&g_wtp.net);
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wtp_dfa_change_state(CAPWAP_SULKING_STATE);
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}
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