Harald Welte | 3aa901d | 2018-08-13 18:32:36 +0200 | [diff] [blame] | 1 | |
| 2 | |
| 3 | #include <asn1c/asn_application.h> |
| 4 | #include <asn1c/der_encoder.h> |
| 5 | |
| 6 | #include <osmocom/core/msgb.h> |
| 7 | #include <osmocom/rspro/RsproPDU.h> |
| 8 | |
| 9 | struct msgb *rspro_msgb_alloc(void) |
| 10 | { |
| 11 | return msgb_alloc_headroom(1024, 8, "RSPRO"); |
| 12 | } |
| 13 | |
| 14 | /*! BER-Encode an RSPRO message into msgb. |
| 15 | * \param[in] pdu Structure describing RSPRO PDU. Is freed by this function on success |
| 16 | * \returns callee-allocated message buffer containing encoded RSPRO PDU; NULL on error. |
| 17 | */ |
| 18 | struct msgb *rspro_enc_msg(RsproPDU_t *pdu) |
| 19 | { |
| 20 | struct msgb *msg = rspro_msgb_alloc(); |
| 21 | asn_enc_rval_t rval; |
| 22 | |
| 23 | if (!msg) |
| 24 | return NULL; |
| 25 | |
| 26 | rval = der_encode_to_buffer(&asn_DEF_RsproPDU, pdu, msgb_data(msg), msgb_length(msg)); |
| 27 | if (rval.encoded < 0) { |
| 28 | return NULL; |
| 29 | } |
| 30 | msgb_put(msg, rval.encoded/8); |
| 31 | |
| 32 | ASN_STRUCT_FREE(asn_DEF_RsproPDU, pdu); |
| 33 | |
| 34 | return msg; |
| 35 | } |
| 36 | |
| 37 | /* consumes 'msg' _if_ it is successful */ |
| 38 | RsproPDU_t *rspro_dec_msg(struct msgb *msg) |
| 39 | { |
| 40 | RsproPDU_t *pdu; |
| 41 | asn_dec_rval_t rval; |
| 42 | |
| 43 | rval = ber_decode(NULL, &asn_DEF_RsproPDU, (void **) &pdu, msgb_data(msg), msgb_length(msg)); |
| 44 | if (rval.code != RC_OK) { |
| 45 | /* FIXME */ |
| 46 | return NULL; |
| 47 | } |
| 48 | |
| 49 | msgb_free(msg); |
| 50 | |
| 51 | return pdu; |
| 52 | } |
| 53 | |
| 54 | #define MAX_NAME_LEN 32 |
| 55 | struct app_comp_id { |
| 56 | char name[MAX_NAME_LEN+1]; |
| 57 | char software[MAX_NAME_LEN+1]; |
| 58 | char sw_version[MAX_NAME_LEN+1]; |
| 59 | char hw_manufacturer[MAX_NAME_LEN+1]; |
| 60 | char hw_model[MAX_NAME_LEN+1]; |
| 61 | char hw_serial_nr[MAX_NAME_LEN+1]; |
| 62 | char hw_version[MAX_NAME_LEN+1]; |
| 63 | char fw_version[MAX_NAME_LEN+1]; |
| 64 | }; |
| 65 | |
| 66 | static void fill_comp_id(ComponentIdentity_t *out, const struct app_comp_id *in) |
| 67 | { |
| 68 | OCTET_STRING_fromString(&out->name, in->name); |
| 69 | OCTET_STRING_fromString(&out->software, in->software); |
| 70 | OCTET_STRING_fromString(&out->swVersion, in->sw_version); |
| 71 | if (strlen(in->hw_manufacturer)) |
| 72 | out->hwManufacturer = OCTET_STRING_new_fromBuf(&asn_DEF_ComponentName, |
| 73 | in->hw_manufacturer, -1); |
| 74 | if (strlen(in->hw_model)) |
| 75 | out->hwModel = OCTET_STRING_new_fromBuf(&asn_DEF_ComponentName, in->hw_model, -1); |
| 76 | if (strlen(in->hw_serial_nr)) |
| 77 | out->hwSerialNr = OCTET_STRING_new_fromBuf(&asn_DEF_ComponentName, in->hw_serial_nr, -1); |
| 78 | if (strlen(in->hw_version)) |
| 79 | out->hwVersion = OCTET_STRING_new_fromBuf(&asn_DEF_ComponentName, in->hw_version, -1); |
| 80 | if (strlen(in->fw_version)) |
| 81 | out->fwVersion = OCTET_STRING_new_fromBuf(&asn_DEF_ComponentName, in->fw_version, -1); |
| 82 | } |
| 83 | |
| 84 | static void fill_ip4_port(IpPort_t *out, uint32_t ip, uint16_t port) |
| 85 | { |
| 86 | uint32_t ip_n = htonl(ip); |
| 87 | out->ip.present = IpAddress_PR_ipv4; |
| 88 | OCTET_STRING_fromBuf(&out->ip.choice.ipv4, (const char *) &ip_n, 4); |
| 89 | out->port = htons(port); |
| 90 | } |
| 91 | |
| 92 | |
| 93 | RsproPDU_t *rspro_gen_ConnectBankReq(const struct app_comp_id *a_cid, |
| 94 | uint16_t bank_id, uint16_t num_slots) |
| 95 | { |
| 96 | RsproPDU_t *pdu = CALLOC(1, sizeof(*pdu)); |
| 97 | if (!pdu) |
| 98 | return NULL; |
| 99 | pdu->msg.present = RsproPDUchoice_PR_connectBankReq; |
| 100 | fill_comp_id(&pdu->msg.choice.connectBankReq.identity, a_cid); |
| 101 | pdu->msg.choice.connectBankReq.bankId = bank_id; |
| 102 | pdu->msg.choice.connectBankReq.numberOfSlots = num_slots; |
| 103 | |
| 104 | return pdu; |
| 105 | } |
| 106 | |
| 107 | RsproPDU_t *rspro_gen_ConnectClientReq(const struct app_comp_id *a_cid) |
| 108 | { |
| 109 | RsproPDU_t *pdu = CALLOC(1, sizeof(*pdu)); |
| 110 | if (!pdu) |
| 111 | return NULL; |
| 112 | pdu->msg.present = RsproPDUchoice_PR_connectClientReq; |
| 113 | fill_comp_id(&pdu->msg.choice.connectClientReq.identity, a_cid); |
| 114 | |
| 115 | return pdu; |
| 116 | } |
| 117 | |
| 118 | RsproPDU_t *rspro_gen_CreateMappingReq(const ClientSlot_t *client, const BankSlot_t *bank) |
| 119 | { |
| 120 | RsproPDU_t *pdu = CALLOC(1, sizeof(*pdu)); |
| 121 | if (!pdu) |
| 122 | return NULL; |
| 123 | pdu->msg.present = RsproPDUchoice_PR_createMappingReq; |
| 124 | pdu->msg.choice.createMappingReq.client = *client; |
| 125 | pdu->msg.choice.createMappingReq.bank = *bank; |
| 126 | |
| 127 | return pdu; |
| 128 | } |
| 129 | |
| 130 | RsproPDU_t *rspro_gen_ConfigClientReq(uint16_t client_id, uint32_t ip, uint16_t port) |
| 131 | { |
| 132 | RsproPDU_t *pdu = CALLOC(1, sizeof(*pdu)); |
| 133 | if (!pdu) |
| 134 | return NULL; |
| 135 | pdu->msg.present = RsproPDUchoice_PR_configClientReq; |
| 136 | pdu->msg.choice.configClientReq.clientId = client_id; |
| 137 | fill_ip4_port(&pdu->msg.choice.configClientReq.bankd, ip, port); |
| 138 | |
| 139 | return pdu; |
| 140 | } |
| 141 | |
| 142 | RsproPDU_t *rspro_gen_SetAtrReq(uint16_t client_id, uint16_t slot_nr, const uint8_t *atr, |
| 143 | unsigned int atr_len) |
| 144 | { |
| 145 | RsproPDU_t *pdu = CALLOC(1, sizeof(*pdu)); |
| 146 | if (!pdu) |
| 147 | return NULL; |
| 148 | pdu->msg.present = RsproPDUchoice_PR_setAtrReq; |
| 149 | pdu->msg.choice.setAtrReq.slot.clientId = client_id; |
| 150 | pdu->msg.choice.setAtrReq.slot.slotNr = slot_nr; |
| 151 | OCTET_STRING_fromBuf(&pdu->msg.choice.setAtrReq.atr, (const char *)atr, atr_len); |
| 152 | |
| 153 | return pdu; |
| 154 | } |