Add Configure Status and Data Check Event control message into Capwap DFA
This commit is contained in:
vemax78
@ -2,10 +2,141 @@
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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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#include <json/json.h>
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/* */
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static struct ac_soap_response* ac_dfa_state_datacheck_parsing_request(struct ac_session_t* session, struct capwap_parsed_packet* packet) {
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int i;
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const char* jsonmessage;
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char* base64confstatus;
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struct capwap_array* elemarray;
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struct json_object* jsonarray;
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struct json_object* jsonparam;
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struct json_object* jsonhash;
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struct ac_soap_response* response;
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struct capwap_resultcode_element* resultcode;
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/* Create SOAP request with JSON param
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{
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RadioOperationalState: [
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{
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RadioID: [int],
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State: [int],
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Cause: [int]
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}
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],
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ResultCode: {
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Code: [int]
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},
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ReturnedMessageElement: [
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{
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}
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]
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}
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*/
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/* */
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jsonparam = json_object_new_object();
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/* RadioOperationalState */
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jsonarray = json_object_new_array();
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elemarray = (struct capwap_array*)capwap_get_message_element_data(packet, CAPWAP_ELEMENT_RADIOOPRSTATE);
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for (i = 0; i < elemarray->count; i++) {
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json_object* jsonradioops;
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struct capwap_radiooprstate_element* radioops = *(struct capwap_radiooprstate_element**)capwap_array_get_item_pointer(elemarray, i);
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/* */
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jsonradioops = json_object_new_object();
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json_object_object_add(jsonradioops, "RadioID", json_object_new_int((int)radioops->radioid));
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json_object_object_add(jsonradioops, "State", json_object_new_int((int)radioops->state));
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json_object_object_add(jsonradioops, "Cause", json_object_new_int((int)radioops->cause));
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json_object_array_add(jsonarray, jsonradioops);
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}
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json_object_object_add(jsonparam, "RadioOperationalState", jsonarray);
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/* ResultCode */
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resultcode = (struct capwap_resultcode_element*)capwap_get_message_element_data(packet, CAPWAP_ELEMENT_RESULTCODE);
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jsonhash = json_object_new_object();
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json_object_object_add(jsonhash, "Code", json_object_new_int((int)resultcode->code));
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json_object_object_add(jsonparam, "ResultCode", jsonhash);
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/* ReturnedMessageElement */
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jsonarray = json_object_new_array();
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/* TODO */
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json_object_object_add(jsonparam, "ReturnedMessageElement", jsonarray);
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/* Get JSON param and convert base64 */
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jsonmessage = json_object_to_json_string(jsonparam);
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base64confstatus = capwap_alloc(AC_BASE64_ENCODE_LENGTH(strlen(jsonmessage)));
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if (!base64confstatus) {
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capwap_outofmemory();
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}
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ac_base64_string_encode(jsonmessage, base64confstatus);
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/* Send message */
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response = ac_soap_changestateevent(session, session->wtpid, base64confstatus);
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/* Free JSON */
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json_object_put(jsonparam);
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capwap_free(base64confstatus);
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return response;
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}
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/* */
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static uint32_t ac_dfa_state_datacheck_create_response(struct ac_session_t* session, struct capwap_parsed_packet* packet, struct ac_soap_response* response, struct capwap_packet_txmng* txmngpacket) {
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int length;
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char* json;
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xmlChar* xmlResult;
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struct json_object* jsonroot;
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if ((response->responsecode != HTTP_RESULT_OK) || !response->xmlResponseReturn) {
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return CAPWAP_RESULTCODE_FAILURE;
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}
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/* Receive SOAP response with JSON result
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{
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}
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*/
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/* Decode base64 result */
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xmlResult = xmlNodeGetContent(response->xmlResponseReturn);
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if (!xmlResult) {
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return CAPWAP_RESULTCODE_FAILURE;
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}
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length = xmlStrlen(xmlResult);
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if (!length) {
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return CAPWAP_RESULTCODE_FAILURE;
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}
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json = (char*)capwap_alloc(AC_BASE64_DECODE_LENGTH(length));
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ac_base64_string_decode((const char*)xmlResult, json);
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xmlFree(xmlResult);
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/* Parsing JSON result */
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jsonroot = json_tokener_parse(json);
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capwap_free(json);
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/* Add message elements response, every local value can be overwrite from backend server */
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/* CAPWAP_CREATE_VENDORSPECIFICPAYLOAD_ELEMENT */ /* TODO */
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if (jsonroot) {
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json_object_put(jsonroot);
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}
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return CAPWAP_RESULTCODE_SUCCESS;
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}
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/* */
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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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uint32_t result;
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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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@ -13,39 +144,57 @@ int ac_dfa_state_datacheck(struct ac_session_t* session, struct capwap_parsed_pa
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ASSERT(session != NULL);
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if (packet) {
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binding = GET_WBID_HEADER(packet->rxmngpacket->header);
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/* TODO: gestione richiesta */
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/* Parsing request */
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struct ac_soap_response* response = ac_dfa_state_datacheck_parsing_request(session, packet);
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if (response) {
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/* Create response */
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capwap_header_init(&capwapheader, CAPWAP_RADIOID_NONE, GET_WBID_HEADER(packet->rxmngpacket->header));
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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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/* 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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/* Add message element */
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result = ac_dfa_state_datacheck_create_response(session, packet, response, txmngpacket);
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if (!CAPWAP_RESULTCODE_OK(result)) {
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struct capwap_resultcode_element resultcode = { .code = result };
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/* Add message element */
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/* CAPWAP_CREATE_VENDORSPECIFICPAYLOAD_ELEMENT */ /* TODO */
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/* Add error result code */
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capwap_packet_txmng_add_message_element(txmngpacket, CAPWAP_ELEMENT_RESULTCODE, &resultcode);
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}
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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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ac_soapclient_free_response(response);
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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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if (CAPWAP_RESULTCODE_OK(result)) {
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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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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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} 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 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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