Improve memory administration for tx/rx packet manager
This commit is contained in:
vemax78
@ -4,91 +4,48 @@
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#include "ac_session.h"
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/* */
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int ac_dfa_state_datacheck(struct ac_session_t* session, struct capwap_packet* packet) {
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unsigned long i;
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int ac_dfa_state_datacheck(struct ac_session_t* session, struct capwap_parsed_packet* packet) {
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unsigned short binding;
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struct capwap_header_data capwapheader;
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struct capwap_packet_txmng* txmngpacket;
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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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binding = GET_WBID_HEADER(packet->rxmngpacket->header);
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/* TODO: gestione richiesta */
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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_CHANGE_STATE_EVENT_REQUEST) && IS_SEQUENCE_SMALLER(session->remoteseqnumber, buildpacket->ctrlmsg.seq)) {
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struct capwap_element_changestateevent_request changeeventrequest;
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/* Change event request info */
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capwap_init_element_changestateevent_request(&changeeventrequest, binding);
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/* Parsing elements list */
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if (capwap_parsing_element_changestateevent_request(&changeeventrequest, buildpacket->elementslist->first)) {
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struct capwap_build_packet* responsepacket;
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/* Create response */
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capwap_header_init(&capwapheader, CAPWAP_RADIOID_NONE, binding);
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txmngpacket = capwap_packet_txmng_create_ctrl_message(&capwapheader, CAPWAP_CHANGE_STATE_EVENT_RESPONSE, packet->rxmngpacket->ctrlmsg.seq, session->mtu);
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/* TODO: gestione richiesta */
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/* Add message element */
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/* CAPWAP_CREATE_VENDORSPECIFICPAYLOAD_ELEMENT */ /* TODO */
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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 change event response */
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capwap_build_packet_set_control_message_type(responsepacket, CAPWAP_CHANGE_STATE_EVENT_RESPONSE, buildpacket->ctrlmsg.seq);
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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 change event 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 change event 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_TO_RUN_STATE);
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capwap_set_timeout(session->dfa.rfcDataCheckTimer, &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_changestateevent_request(&changeeventrequest, 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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/* Change event response complete, get fragment packets */
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ac_free_reference_last_response(session);
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capwap_packet_txmng_get_fragment_packets(txmngpacket, session->responsefragmentpacket, session->fragmentid);
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if (session->responsefragmentpacket->count > 1) {
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session->fragmentid++;
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}
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/* Free packets manager */
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capwap_packet_txmng_free(txmngpacket);
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/* Save remote sequence number */
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session->remoteseqnumber = packet->rxmngpacket->ctrlmsg.seq;
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capwap_get_packet_digest(packet->rxmngpacket, packet->connection, session->lastrecvpackethash);
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/* Send Change event response to WTP */
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if (!capwap_crypt_sendto_fragmentpacket(&session->ctrldtls, session->ctrlsocket.socket[session->ctrlsocket.type], session->responsefragmentpacket, &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 change event response packet");
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}
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/* Change state */
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ac_dfa_change_state(session, CAPWAP_DATA_CHECK_TO_RUN_STATE);
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capwap_set_timeout(session->dfa.rfcDataCheckTimer, &session->timeout, CAPWAP_TIMER_CONTROL_CONNECTION);
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} else {
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/* Configure timeout */
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ac_dfa_change_state(session, CAPWAP_DATA_CHECK_TO_DTLS_TEARDOWN_STATE);
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@ -99,59 +56,54 @@ int ac_dfa_state_datacheck(struct ac_session_t* session, struct capwap_packet* p
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}
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/* */
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int ac_dfa_state_datacheck_to_run(struct ac_session_t* session, struct capwap_packet* packet) {
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int ac_dfa_state_datacheck_to_run(struct ac_session_t* session, struct capwap_parsed_packet* packet) {
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struct capwap_list* txfragpacket;
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struct capwap_header_data capwapheader;
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struct capwap_packet_txmng* txmngpacket;
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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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/* Wait Data Channel Keep-Alive packet */
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if (!packet->socket.isctrlsocket) {
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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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struct capwap_sessionid_element sessionid;
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if (capwap_get_sessionid_from_keepalive(buildpacket, &sessionid)) {
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if (!memcmp(&sessionid, &session->sessionid, sizeof(struct capwap_sessionid_element))) {
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int result;
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capwap_fragment_packet_array* txfragpacket;
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/* Receive data packet keepalive, response with same packet */
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txfragpacket = capwap_array_create(sizeof(struct capwap_packet), 0);
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result = capwap_fragment_build_packet(buildpacket, txfragpacket, CAPWAP_DONT_FRAGMENT, 0);
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if (!result) {
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struct capwap_packet* txpacket;
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ASSERT(txfragpacket->count == 1);
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txpacket = (struct capwap_packet*)capwap_array_get_item_pointer(txfragpacket, 0);
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ASSERT(txpacket != NULL);
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if (!capwap_crypt_sendto(&session->datadtls, session->datasocket.socket[session->datasocket.type], txpacket->header, txpacket->packetsize, &session->acdataaddress, &session->wtpdataaddress)) {
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capwap_logging_debug("Warning: error to send data channel keepalive packet");
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result = -1;
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}
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}
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/* */
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capwap_fragment_free(txfragpacket);
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capwap_array_free(txfragpacket);
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if (!result) {
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/* Capwap handshake complete */
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ac_dfa_change_state(session, CAPWAP_RUN_STATE);
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capwap_set_timeout(AC_MAX_ECHO_INTERVAL, &session->timeout, CAPWAP_TIMER_CONTROL_CONNECTION);
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} else {
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ac_dfa_change_state(session, CAPWAP_DATA_CHECK_TO_DTLS_TEARDOWN_STATE);
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status = AC_DFA_NO_PACKET;
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}
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if (!packet->rxmngpacket->isctrlpacket && IS_FLAG_K_HEADER(packet->rxmngpacket->header)) {
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if (!memcmp(packet->messageelements.sessionid, &session->sessionid, sizeof(struct capwap_sessionid_element))) {
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int result = 0;
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/* Build packet */
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capwap_header_init(&capwapheader, CAPWAP_RADIOID_NONE, GET_WBID_HEADER(packet->rxmngpacket->header));
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capwap_header_set_keepalive_flag(&capwapheader, 1);
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txmngpacket = capwap_packet_txmng_create_data_message(&capwapheader, session->mtu);
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/* Add message element */
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capwap_packet_txmng_add_message_element(txmngpacket, CAPWAP_ELEMENT_SESSIONID, &session->sessionid);
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/* Data keepalive complete, get fragment packets into local list */
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txfragpacket = capwap_list_create();
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capwap_packet_txmng_get_fragment_packets(txmngpacket, txfragpacket, 0);
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if (txfragpacket->count == 1) {
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/* Send Data keepalive to WTP */
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if (capwap_crypt_sendto_fragmentpacket(&session->datadtls, session->datasocket.socket[session->datasocket.type], txfragpacket, &session->acdataaddress, &session->wtpdataaddress)) {
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result = 1;
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} else {
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capwap_logging_debug("Warning: error to send data channel keepalive packet");
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}
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} else {
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capwap_logging_debug("Warning: error to send data channel keepalive packet, fragment packet");
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}
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/* Free packets manager */
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capwap_list_free(txfragpacket);
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capwap_packet_txmng_free(txmngpacket);
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if (result) {
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/* Capwap handshake complete */
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ac_dfa_change_state(session, CAPWAP_RUN_STATE);
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capwap_set_timeout(AC_MAX_ECHO_INTERVAL, &session->timeout, CAPWAP_TIMER_CONTROL_CONNECTION);
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} else {
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ac_dfa_change_state(session, CAPWAP_DATA_CHECK_TO_DTLS_TEARDOWN_STATE);
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status = AC_DFA_NO_PACKET;
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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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}
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} else {
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@ -164,6 +116,6 @@ int ac_dfa_state_datacheck_to_run(struct ac_session_t* session, struct capwap_pa
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}
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/* */
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int ac_dfa_state_datacheck_to_dtlsteardown(struct ac_session_t* session, struct capwap_packet* packet) {
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int ac_dfa_state_datacheck_to_dtlsteardown(struct ac_session_t* session, struct capwap_parsed_packet* packet) {
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return ac_session_teardown_connection(session);
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}
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