129 lines
5.3 KiB
C
129 lines
5.3 KiB
C
#include "ac.h"
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#include "capwap_dfa.h"
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#include "capwap_array.h"
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#include "ac_session.h"
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/* */
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int ac_dfa_state_configure(struct ac_session_t* session, struct capwap_packet* packet) {
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unsigned long i;
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int status = AC_DFA_ACCEPT_PACKET;
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ASSERT(session != NULL);
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if (packet) {
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struct capwap_build_packet* buildpacket;
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buildpacket = capwap_rx_packet_create((void*)packet->header, packet->packetsize, packet->socket.isctrlsocket);
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if (buildpacket) {
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if (!capwap_build_packet_validate(buildpacket, NULL)) {
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unsigned short binding;
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/* */
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binding = GET_WBID_HEADER(&buildpacket->header);
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if (ac_valid_binding(binding) && (ntohl(buildpacket->ctrlmsg.type) == CAPWAP_CONFIGURATION_STATUS_REQUEST) && IS_SEQUENCE_SMALLER(session->remoteseqnumber, buildpacket->ctrlmsg.seq)) {
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struct capwap_element_configurationstatus_request configurationstatusrequest;
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/* Configuration Status request info*/
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capwap_init_element_configurationstatus_request(&configurationstatusrequest, binding);
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/* Parsing elements list */
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if (capwap_parsing_element_configurationstatus_request(&configurationstatusrequest, buildpacket->elementslist->first)) {
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struct capwap_build_packet* responsepacket;
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/* TODO: gestione richiesta */
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/* Create response */
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responsepacket = capwap_tx_packet_create(CAPWAP_RADIOID_NONE, binding);
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responsepacket->isctrlmsg = 1;
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/* Prepare configuration status response */
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capwap_build_packet_set_control_message_type(responsepacket, CAPWAP_CONFIGURATION_STATUS_RESPONSE, buildpacket->ctrlmsg.seq);
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capwap_build_packet_add_message_element(responsepacket, CAPWAP_CREATE_TIMERS_ELEMENT(&session->dfa.timers));
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for (i = 0; i < configurationstatusrequest.radioadmstatus->count; i++) {
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struct capwap_decrypterrorreportperiod_element report;
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struct capwap_radioadmstate_element* radioadm = (struct capwap_radioadmstate_element*)capwap_array_get_item_pointer(configurationstatusrequest.radioadmstatus, i);
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report.radioid = radioadm->radioid;
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report.interval = session->dfa.decrypterrorreport_interval;
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capwap_build_packet_add_message_element(responsepacket, CAPWAP_CREATE_DECRYPTERRORREPORTPERIOD_ELEMENT(&report));
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}
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capwap_build_packet_add_message_element(responsepacket, CAPWAP_CREATE_IDLETIMEOUT_ELEMENT(&session->dfa.idletimeout));
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capwap_build_packet_add_message_element(responsepacket, CAPWAP_CREATE_WTPFALLBACK_ELEMENT(&session->dfa.wtpfallback));
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if (session->dfa.acipv4list->count > 0) {
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capwap_build_packet_add_message_element(responsepacket, CAPWAP_CREATE_ACIPV4LIST_ELEMENT(session->dfa.acipv4list));
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}
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if (session->dfa.acipv6list->count > 0) {
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capwap_build_packet_add_message_element(responsepacket, CAPWAP_CREATE_ACIPV6LIST_ELEMENT(session->dfa.acipv6list));
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}
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/* CAPWAP_CREATE_RADIOOPRSTATE_ELEMENT */ /* TODO */
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/* CAPWAP_CREATE_WTPSTATICIPADDRESS_ELEMENT */ /* TODO */
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/* CAPWAP_CREATE_VENDORSPECIFICPAYLOAD_ELEMENT */ /* TODO */
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if (!capwap_build_packet_validate(responsepacket, NULL)) {
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int result;
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/* Free old reference for this request */
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ac_free_reference_last_response(session);
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/* Send configuration status response to WTP */
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result = capwap_fragment_build_packet(responsepacket, session->responsefragmentpacket, session->mtu, session->fragmentid);
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if (result >= 0) {
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if (result == 1) {
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session->fragmentid++;
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}
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/* Save remote sequence number */
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session->remoteseqnumber = buildpacket->ctrlmsg.seq;
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capwap_get_packet_digest((void*)packet->header, packet->packetsize, session->lastrecvpackethash);
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/* Send */
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for (i = 0; i < session->responsefragmentpacket->count; i++) {
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struct capwap_packet* txpacket = (struct capwap_packet*)capwap_array_get_item_pointer(session->responsefragmentpacket, i);
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ASSERT(txpacket != NULL);
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if (!capwap_crypt_sendto(&session->ctrldtls, session->ctrlsocket.socket[session->ctrlsocket.type], txpacket->header, txpacket->packetsize, &session->acctrladdress, &session->wtpctrladdress)) {
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/* Response is already created and saved. When receive a re-request, DFA autoresponse */
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capwap_logging_debug("Warning: error to send configuration status response packet");
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break;
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}
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}
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/* Change status */
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ac_dfa_change_state(session, CAPWAP_DATA_CHECK_STATE);
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capwap_set_timeout(session->dfa.rfcChangeStatePendingTimer, &session->timeout, CAPWAP_TIMER_CONTROL_CONNECTION);
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}
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} else {
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capwap_logging_debug("Warning: build invalid configuration status response packet");
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}
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/* Free memory */
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capwap_build_packet_free(responsepacket);
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}
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/* Free */
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capwap_free_element_configurationstatus_request(&configurationstatusrequest, binding);
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}
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}
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/* Free */
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capwap_build_packet_free(buildpacket);
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}
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} else {
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/* Configure timeout */
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ac_dfa_change_state(session, CAPWAP_CONFIGURE_TO_DTLS_TEARDOWN_STATE);
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status = AC_DFA_NO_PACKET;
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}
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return status;
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}
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/* */
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int ac_dfa_state_configure_to_dtlsteardown(struct ac_session_t* session, struct capwap_packet* packet) {
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return ac_session_teardown_connection(session);
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}
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