254 lines
8.8 KiB
C
254 lines
8.8 KiB
C
#include "tpm.h"
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#include "facilities.h"
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#include <itss-transport/TransportRequest.h>
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#include <it2s-tender/space.h>
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#include <stdint.h>
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#include <string.h>
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int tpm_pay(void* fc) {
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int rv = 0;
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syslog_info("[facilities] [tolling] issuing toll payment");
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facilities_t* facilities = (facilities_t*) fc;
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tolling_s* tolling = (tolling_s*) &facilities->tolling;
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TransportRequest_t* tr = NULL;
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TPM_t* tpm = NULL;
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const size_t buf_len = 2048;
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uint8_t buf[buf_len];
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if (!tolling->enabled) {
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syslog_debug("[facilities] [tolling] tolling is disabled");
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goto cleanup;
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}
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tolling->active = true;
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tolling->nonce = rand();
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// TPM
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tpm = calloc(1, sizeof(TPM_t));
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tpm->header.messageID = 117;
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tpm->header.protocolVersion = 0;
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pthread_mutex_lock(&facilities->id.lock);
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tpm->header.stationID = facilities->id.station_id;
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pthread_mutex_unlock(&facilities->id.lock);
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BasicContainer_t* bc = &tpm->tpm.camParameters.basicContainer;
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tpm->tpm.camParameters.basicContainer.stationType = facilities->station_type;
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it2s_tender_lock_space(&facilities->epv);
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it2s_tender_get_space(&facilities->epv);
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bc->referencePosition.altitude.altitudeValue = facilities->epv.space.altitude;
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bc->referencePosition.altitude.altitudeConfidence = facilities->epv.space.altitude_conf;
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// Set GPS coordinates
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bc->referencePosition.latitude = facilities->epv.space.latitude;
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bc->referencePosition.longitude = facilities->epv.space.longitude;
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uint16_t lat_conf = facilities->epv.space.latitude_conf;
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uint16_t lon_conf = facilities->epv.space.longitude_conf;
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tpm->tpm.camParameters.highFrequencyContainer.present = HighFrequencyContainer_PR_basicVehicleContainerHighFrequency;
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BasicVehicleContainerHighFrequency_t* bvc_hf = &tpm->tpm.camParameters.highFrequencyContainer.choice.basicVehicleContainerHighFrequency;
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// Set speed
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bvc_hf->speed.speedValue = facilities->epv.space.speed;
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bvc_hf->speed.speedConfidence = facilities->epv.space.speed_conf;
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// Set heading
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bvc_hf->heading.headingValue = facilities->epv.space.heading;
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bvc_hf->heading.headingConfidence = facilities->epv.space.heading_conf;
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it2s_tender_unlock_space(&facilities->epv);
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if (lat_conf > lon_conf) {
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bc->referencePosition.positionConfidenceEllipse.semiMinorConfidence = lon_conf;
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bc->referencePosition.positionConfidenceEllipse.semiMajorConfidence = lat_conf;
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bc->referencePosition.positionConfidenceEllipse.semiMajorOrientation = 0;
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} else {
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bc->referencePosition.positionConfidenceEllipse.semiMinorConfidence = lon_conf;
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bc->referencePosition.positionConfidenceEllipse.semiMajorConfidence = lat_conf;
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bc->referencePosition.positionConfidenceEllipse.semiMajorOrientation = 900;
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}
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bvc_hf->vehicleWidth = facilities->vehicle.width;
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bvc_hf->vehicleLength.vehicleLengthValue = facilities->vehicle.length;
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bvc_hf->vehicleLength.vehicleLengthConfidenceIndication = VehicleLengthConfidenceIndication_unavailable;
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bvc_hf->longitudinalAcceleration.longitudinalAccelerationValue = LongitudinalAccelerationValue_unavailable;
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bvc_hf->longitudinalAcceleration.longitudinalAccelerationConfidence = AccelerationConfidence_unavailable;
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bvc_hf->driveDirection = DriveDirection_unavailable;
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bvc_hf->curvature.curvatureValue = CurvatureValue_unavailable;
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bvc_hf->curvature.curvatureConfidence = CurvatureConfidence_unavailable;
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bvc_hf->yawRate.yawRateValue = YawRateValue_unavailable;
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bvc_hf->yawRate.yawRateConfidence = YawRateConfidence_unavailable;
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it2s_tender_unlock_space(&facilities->epv);
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asn_ulong2INTEGER(&tpm->tpm.timestamp, it2s_tender_get_clock(&facilities->epv));
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tpm->tpm.tollingFlow.present = TollingFlow_PR_request;
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tpm->tpm.tollingFlow.choice.request.clientId = tolling->client_id;
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tpm->tpm.tollingFlow.choice.request.paymentMethod.present = TollPaymentMethod_PR_fiat;
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tpm->tpm.tollingFlow.choice.request.paymentMethod.choice.fiat.fiatId = FiatId_eur;
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tpm->tpm.tollingFlow.choice.request.transactionNonce = tolling->nonce;
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// encode TPM
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asn_enc_rval_t enc = uper_encode_to_buffer(&asn_DEF_TPM, NULL, tpm, buf, buf_len);
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if (enc.encoded == -1) {
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syslog_err("[facilities] [tolling] error encoding TPM.request (%s)", enc.failed_type->name);
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rv = 1;
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goto cleanup;
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}
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size_t tpm_uper_len = (enc.encoded + 7) / 8;
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// [transport] request (TR)
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tr = calloc(1, sizeof(TransportRequest_t));
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tr->present = TransportRequest_PR_packet;
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tr->choice.packet.present = TransportPacketRequest_PR_btp;
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BTPPacketRequest_t* bpr = &tr->choice.packet.choice.btp;
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bpr->data.size = tpm_uper_len;
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bpr->data.buf = malloc(tpm_uper_len);
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memcpy(bpr->data.buf, buf, tpm_uper_len);
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bpr->destinationPort = 7011;
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bpr->btpType = BTPType_btpB;
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bpr->gn.destinationAddress.buf = malloc(6);
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for (int i = 0; i < 6; ++i) {
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bpr->gn.destinationAddress.buf[i] = 0xff;
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}
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bpr->gn.destinationAddress.size = 6;
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bpr->gn.trafficClass = 2;
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bpr->gn.packetTransportType = PacketTransportType_shb;
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// encode TR
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buf[0] = 4;
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enc = oer_encode_to_buffer(&asn_DEF_TransportRequest, NULL, tr, buf+1, buf_len-1);
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if (enc.encoded == -1) {
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syslog_err("[facilities] [tolling] error encoding TR TPM.request (%s)", enc.failed_type->name);
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rv = 1;
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goto cleanup;
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}
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queue_send(facilities->tx_queue, buf, enc.encoded+1, 3);
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cleanup:
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ASN_STRUCT_FREE(asn_DEF_TPM, tpm);
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ASN_STRUCT_FREE(asn_DEF_TransportRequest, tr);
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return rv;
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}
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static void rsu_handle_recv(facilities_t* facilities, TollRequest_t* req) {
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const size_t buf_len = 2048;
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uint8_t buf[buf_len];
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TransportRequest_t* tr = NULL;
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TPM_t* tpm = NULL;
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// TPM
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tpm = calloc(1, sizeof(TPM_t));
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asn_ulong2INTEGER(&tpm->tpm.timestamp, it2s_tender_get_clock(&facilities->epv));
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// TODO check clientId
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// TODO dlt: check transaction
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// encode TPM
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asn_enc_rval_t enc = uper_encode_to_buffer(&asn_DEF_TPM, NULL, tpm, buf, buf_len);
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if (enc.encoded == -1) {
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syslog_err("[facilities] [tolling] error encoding TPM.request (%s)", enc.failed_type->name);
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goto cleanup;
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}
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size_t tpm_uper_len = (enc.encoded + 7) / 8;
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// [transport] request (TR)
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tr = calloc(1, sizeof(TransportRequest_t));
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tr->present = TransportRequest_PR_packet;
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tr->choice.packet.present = TransportPacketRequest_PR_btp;
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BTPPacketRequest_t* bpr = &tr->choice.packet.choice.btp;
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bpr->data.size = tpm_uper_len;
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bpr->data.buf = malloc(tpm_uper_len);
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memcpy(bpr->data.buf, buf, tpm_uper_len);
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bpr->destinationPort = 7011;
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bpr->btpType = BTPType_btpB;
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bpr->gn.destinationAddress.buf = malloc(6);
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for (int i = 0; i < 6; ++i) {
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bpr->gn.destinationAddress.buf[i] = 0xff;
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}
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bpr->gn.destinationAddress.size = 6;
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bpr->gn.trafficClass = 2;
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bpr->gn.packetTransportType = PacketTransportType_shb;
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// encode TR
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buf[0] = 4;
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enc = oer_encode_to_buffer(&asn_DEF_TransportRequest, NULL, tr, buf+1, buf_len-1);
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if (enc.encoded == -1) {
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syslog_err("[facilities] [tolling] error encoding TR TPM.request (%s)", enc.failed_type->name);
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goto cleanup;
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}
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queue_send(facilities->tx_queue, buf, enc.encoded+1, 3);
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cleanup:
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ASN_STRUCT_FREE(asn_DEF_TPM, tpm);
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ASN_STRUCT_FREE(asn_DEF_TransportRequest, tr);
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}
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static void veh_handle_recv(tolling_s* tolling, TollReply_t* rep) {
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if (rep->clientId != tolling->client_id) {
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syslog_debug("[facilities] [tolling]<- received TPM.reply clientId different from ego");
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return;
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}
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if (rep->transactionNonce != tolling->nonce) {
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syslog_err("[facilities] [tolling]<- received TPM.reply nonce different from sent request");
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return;
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}
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tolling->active = false;
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}
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int tpm_recv(void* fc, TPM_t* tpm_rx) {
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int rv = 0;
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facilities_t* facilities = (facilities_t*) fc;
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tolling_s* tolling = (tolling_s*) &facilities->tolling;
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if (!tolling->enabled) {
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syslog_debug("[facilities] [tolling] tolling is disabled");
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goto cleanup;
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}
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switch (tpm_rx->tpm.tollingFlow.present) {
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case TollingFlow_PR_request:
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if (facilities->station_type != 15) {
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syslog_debug("[facilities] [tolling] received TPM.request, ignoring");
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goto cleanup;
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}
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rsu_handle_recv(facilities, &tpm_rx->tpm.tollingFlow.choice.request);
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break;
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case TollingFlow_PR_reply:
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if (facilities->station_type == 15) {
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syslog_debug("[facilities] [tolling] received TPM.reply, ignoring");
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goto cleanup;
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}
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veh_handle_recv(tolling, &tpm_rx->tpm.tollingFlow.choice.reply);
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break;
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default:
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break;
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}
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cleanup:
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return rv;
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}
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