| |
| |
| #include <asn1c/asn_application.h> |
| #include <asn1c/der_encoder.h> |
| |
| #include <osmocom/core/msgb.h> |
| #include <osmocom/rspro/RsproPDU.h> |
| |
| #include "rspro_util.h" |
| |
| #define ASN_ALLOC_COPY(out, in) \ |
| do { \ |
| if (in) { \ |
| out = CALLOC(1, sizeof(*in)); \ |
| OSMO_ASSERT(out); \ |
| memcpy(out, in, sizeof(*in)); \ |
| } \ |
| } while (0) |
| |
| |
| struct msgb *rspro_msgb_alloc(void) |
| { |
| return msgb_alloc_headroom(1024, 8, "RSPRO"); |
| } |
| |
| /*! BER-Encode an RSPRO message into msgb. |
| * \param[in] pdu Structure describing RSPRO PDU. Is freed by this function on success |
| * \returns callee-allocated message buffer containing encoded RSPRO PDU; NULL on error. |
| */ |
| struct msgb *rspro_enc_msg(RsproPDU_t *pdu) |
| { |
| struct msgb *msg = rspro_msgb_alloc(); |
| asn_enc_rval_t rval; |
| |
| if (!msg) |
| return NULL; |
| |
| msg->l2h = msg->data; |
| rval = der_encode_to_buffer(&asn_DEF_RsproPDU, pdu, msgb_data(msg), msgb_tailroom(msg)); |
| if (rval.encoded < 0) { |
| fprintf(stderr, "Failed to encode %s\n", rval.failed_type->name); |
| msgb_free(msg); |
| return NULL; |
| } |
| msgb_put(msg, rval.encoded); |
| |
| ASN_STRUCT_FREE(asn_DEF_RsproPDU, pdu); |
| |
| return msg; |
| } |
| |
| /* consumes 'msg' _if_ it is successful */ |
| RsproPDU_t *rspro_dec_msg(struct msgb *msg) |
| { |
| RsproPDU_t *pdu = NULL; |
| asn_dec_rval_t rval; |
| |
| printf("decoding %s\n", msgb_hexdump(msg)); |
| rval = ber_decode(NULL, &asn_DEF_RsproPDU, (void **) &pdu, msgb_l2(msg), msgb_l2len(msg)); |
| if (rval.code != RC_OK) { |
| fprintf(stderr, "Failed to decode: %d. Consumed %lu of %u bytes\n", |
| rval.code, rval.consumed, msgb_length(msg)); |
| msgb_free(msg); |
| return NULL; |
| } |
| |
| msgb_free(msg); |
| |
| return pdu; |
| } |
| |
| static void fill_comp_id(ComponentIdentity_t *out, const struct app_comp_id *in) |
| { |
| out->type = in->type; |
| OCTET_STRING_fromString(&out->name, in->name); |
| OCTET_STRING_fromString(&out->software, in->software); |
| OCTET_STRING_fromString(&out->swVersion, in->sw_version); |
| if (strlen(in->hw_manufacturer)) |
| out->hwManufacturer = OCTET_STRING_new_fromBuf(&asn_DEF_ComponentName, |
| in->hw_manufacturer, -1); |
| if (strlen(in->hw_model)) |
| out->hwModel = OCTET_STRING_new_fromBuf(&asn_DEF_ComponentName, in->hw_model, -1); |
| if (strlen(in->hw_serial_nr)) |
| out->hwSerialNr = OCTET_STRING_new_fromBuf(&asn_DEF_ComponentName, in->hw_serial_nr, -1); |
| if (strlen(in->hw_version)) |
| out->hwVersion = OCTET_STRING_new_fromBuf(&asn_DEF_ComponentName, in->hw_version, -1); |
| if (strlen(in->fw_version)) |
| out->fwVersion = OCTET_STRING_new_fromBuf(&asn_DEF_ComponentName, in->fw_version, -1); |
| } |
| |
| static void fill_ip4_port(IpPort_t *out, uint32_t ip, uint16_t port) |
| { |
| uint32_t ip_n = htonl(ip); |
| out->ip.present = IpAddress_PR_ipv4; |
| OCTET_STRING_fromBuf(&out->ip.choice.ipv4, (const char *) &ip_n, 4); |
| out->port = htons(port); |
| } |
| |
| |
| RsproPDU_t *rspro_gen_ConnectBankReq(const struct app_comp_id *a_cid, |
| uint16_t bank_id, uint16_t num_slots) |
| { |
| RsproPDU_t *pdu = CALLOC(1, sizeof(*pdu)); |
| if (!pdu) |
| return NULL; |
| pdu->msg.present = RsproPDUchoice_PR_connectBankReq; |
| fill_comp_id(&pdu->msg.choice.connectBankReq.identity, a_cid); |
| pdu->msg.choice.connectBankReq.bankId = bank_id; |
| pdu->msg.choice.connectBankReq.numberOfSlots = num_slots; |
| |
| return pdu; |
| } |
| |
| RsproPDU_t *rspro_gen_ConnectClientReq(const struct app_comp_id *a_cid, const ClientSlot_t *client) |
| { |
| RsproPDU_t *pdu = CALLOC(1, sizeof(*pdu)); |
| if (!pdu) |
| return NULL; |
| pdu->msg.present = RsproPDUchoice_PR_connectClientReq; |
| fill_comp_id(&pdu->msg.choice.connectClientReq.identity, a_cid); |
| ASN_ALLOC_COPY(pdu->msg.choice.connectClientReq.clientSlot, client); |
| |
| return pdu; |
| } |
| |
| RsproPDU_t *rspro_gen_ConnectClientRes(const struct app_comp_id *a_cid, e_ResultCode res) |
| { |
| RsproPDU_t *pdu = CALLOC(1, sizeof(*pdu)); |
| if (!pdu) |
| return NULL; |
| pdu->version = 2; |
| pdu->tag = 2342; |
| pdu->msg.present = RsproPDUchoice_PR_connectClientRes; |
| fill_comp_id(&pdu->msg.choice.connectClientRes.identity, a_cid); |
| pdu->msg.choice.connectClientRes.result = res; |
| |
| return pdu; |
| } |
| |
| RsproPDU_t *rspro_gen_CreateMappingReq(const ClientSlot_t *client, const BankSlot_t *bank) |
| { |
| RsproPDU_t *pdu = CALLOC(1, sizeof(*pdu)); |
| if (!pdu) |
| return NULL; |
| pdu->msg.present = RsproPDUchoice_PR_createMappingReq; |
| pdu->msg.choice.createMappingReq.client = *client; |
| pdu->msg.choice.createMappingReq.bank = *bank; |
| |
| return pdu; |
| } |
| |
| RsproPDU_t *rspro_gen_ConfigClientReq(const ClientSlot_t *client, uint32_t ip, uint16_t port) |
| { |
| RsproPDU_t *pdu = CALLOC(1, sizeof(*pdu)); |
| if (!pdu) |
| return NULL; |
| pdu->msg.present = RsproPDUchoice_PR_configClientReq; |
| pdu->msg.choice.configClientReq.clientSlot = *client; |
| fill_ip4_port(&pdu->msg.choice.configClientReq.bankd, ip, port); |
| |
| return pdu; |
| } |
| |
| RsproPDU_t *rspro_gen_SetAtrReq(uint16_t client_id, uint16_t slot_nr, const uint8_t *atr, |
| unsigned int atr_len) |
| { |
| RsproPDU_t *pdu = CALLOC(1, sizeof(*pdu)); |
| if (!pdu) |
| return NULL; |
| pdu->msg.present = RsproPDUchoice_PR_setAtrReq; |
| pdu->msg.choice.setAtrReq.slot.clientId = client_id; |
| pdu->msg.choice.setAtrReq.slot.slotNr = slot_nr; |
| OCTET_STRING_fromBuf(&pdu->msg.choice.setAtrReq.atr, (const char *)atr, atr_len); |
| |
| return pdu; |
| } |
| |
| RsproPDU_t *rspro_gen_TpduModem2Card(const ClientSlot_t *client, const BankSlot_t *bank, |
| const uint8_t *tpdu, unsigned int tpdu_len) |
| { |
| RsproPDU_t *pdu = CALLOC(1, sizeof(*pdu)); |
| if (!pdu) |
| return NULL; |
| pdu->msg.present = RsproPDUchoice_PR_tpduModemToCard; |
| OSMO_ASSERT(client); |
| pdu->msg.choice.tpduModemToCard.fromClientSlot = *client; |
| OSMO_ASSERT(bank); |
| pdu->msg.choice.tpduModemToCard.toBankSlot = *bank; |
| /* TODO: flags? */ |
| OCTET_STRING_fromBuf(&pdu->msg.choice.tpduModemToCard.data, (const char *)tpdu, tpdu_len); |
| |
| return pdu; |
| } |
| |
| RsproPDU_t *rspro_gen_TpduCard2Modem(const BankSlot_t *bank, const ClientSlot_t *client, |
| const uint8_t *tpdu, unsigned int tpdu_len) |
| { |
| RsproPDU_t *pdu = CALLOC(1, sizeof(*pdu)); |
| if (!pdu) |
| return NULL; |
| pdu->msg.present = RsproPDUchoice_PR_tpduCardToModem; |
| OSMO_ASSERT(bank); |
| pdu->msg.choice.tpduCardToModem.fromBankSlot = *bank; |
| OSMO_ASSERT(client) |
| pdu->msg.choice.tpduCardToModem.toClientSlot = *client; |
| /* TODO: flags? */ |
| OCTET_STRING_fromBuf(&pdu->msg.choice.tpduCardToModem.data, (const char *)tpdu, tpdu_len); |
| |
| return pdu; |
| } |