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#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);
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;
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;
pdu->msg.choice.tpduModemToCard.fromClientSlot = *client;
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;
pdu->msg.choice.tpduCardToModem.fromBankSlot = *bank;
pdu->msg.choice.tpduCardToModem.toClientSlot = *client;
/* TODO: flags? */
OCTET_STRING_fromBuf(&pdu->msg.choice.tpduCardToModem.data, (const char *)tpdu, tpdu_len);
return pdu;
}
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