Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 1 | #include <osmocom/core/msgb.h> |
| 2 | #include <osmocom/core/utils.h> |
| 3 | |
| 4 | #include <unistd.h> |
| 5 | #include <errno.h> |
| 6 | #include <string.h> |
| 7 | |
| 8 | #include "asn1helpers.h" |
| 9 | |
| 10 | #include "hnbgw.h" |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 11 | #include "hnbgw_ranap.h" |
Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 12 | #include "rua_common.h" |
| 13 | #include "rua_ies_defs.h" |
| 14 | |
| 15 | static int hnbgw_rua_tx(struct hnb_context *ctx, struct msgb *msg) |
| 16 | { |
| 17 | if (!msg) |
| 18 | return -EINVAL; |
| 19 | |
| 20 | msgb_ppid(msg) = IUH_PPI_RUA; |
| 21 | return osmo_wqueue_enqueue(&ctx->wqueue, msg); |
| 22 | } |
| 23 | |
Harald Welte | 64b4ebe | 2015-09-10 19:29:59 +0200 | [diff] [blame] | 24 | static const struct value_string rua_cause_radio_vals[] = { |
| 25 | { RUA_CauseRadioNetwork_normal, "normal" }, |
| 26 | { RUA_CauseRadioNetwork_connect_failed, "connect failed" }, |
| 27 | { RUA_CauseRadioNetwork_network_release, "network release" }, |
| 28 | { RUA_CauseRadioNetwork_unspecified, "unspecified" }, |
| 29 | { 0, NULL } |
| 30 | }; |
| 31 | |
| 32 | static const struct value_string rua_cause_transp_vals[] = { |
| 33 | { RUA_CauseTransport_transport_resource_unavailable, "resource unavailable" }, |
| 34 | { RUA_CauseTransport_unspecified, "unspecified" }, |
| 35 | { 0, NULL } |
| 36 | }; |
| 37 | |
| 38 | static const struct value_string rua_cause_prot_vals[] = { |
| 39 | { RUA_CauseProtocol_transfer_syntax_error, "syntax error" }, |
| 40 | { RUA_CauseProtocol_abstract_syntax_error_reject, |
| 41 | "abstract syntax error; reject" }, |
| 42 | { RUA_CauseProtocol_abstract_syntax_error_ignore_and_notify, |
| 43 | "abstract syntax error; ignore and notify" }, |
| 44 | { RUA_CauseProtocol_message_not_compatible_with_receiver_state, |
| 45 | "message not compatible with receiver state" }, |
| 46 | { RUA_CauseProtocol_semantic_error, "semantic error" }, |
| 47 | { RUA_CauseProtocol_unspecified, "unspecified" }, |
| 48 | { RUA_CauseProtocol_abstract_syntax_error_falsely_constructed_message, |
| 49 | "falsely constructed message" }, |
| 50 | { 0, NULL } |
| 51 | }; |
| 52 | |
| 53 | static const struct value_string rua_cause_misc_vals[] = { |
| 54 | { RUA_CauseMisc_processing_overload, "processing overload" }, |
| 55 | { RUA_CauseMisc_hardware_failure, "hardware failure" }, |
| 56 | { RUA_CauseMisc_o_and_m_intervention, "OAM intervention" }, |
| 57 | { RUA_CauseMisc_unspecified, "unspecified" }, |
| 58 | { 0, NULL } |
| 59 | }; |
| 60 | |
| 61 | static char *rua_cause_str(RUA_Cause_t *cause) |
| 62 | { |
| 63 | static char buf[32]; |
| 64 | |
| 65 | switch (cause->present) { |
| 66 | case RUA_Cause_PR_radioNetwork: |
| 67 | snprintf(buf, sizeof(buf), "radio(%s)", |
| 68 | get_value_string(rua_cause_radio_vals, |
| 69 | cause->choice.radioNetwork)); |
| 70 | break; |
| 71 | case RUA_Cause_PR_transport: |
| 72 | snprintf(buf, sizeof(buf), "transport(%s)", |
| 73 | get_value_string(rua_cause_transp_vals, |
| 74 | cause->choice.transport)); |
| 75 | break; |
| 76 | case RUA_Cause_PR_protocol: |
| 77 | snprintf(buf, sizeof(buf), "protocol(%s)", |
| 78 | get_value_string(rua_cause_prot_vals, |
| 79 | cause->choice.protocol)); |
| 80 | break; |
| 81 | case RUA_Cause_PR_misc: |
| 82 | snprintf(buf, sizeof(buf), "misc(%s)", |
| 83 | get_value_string(rua_cause_misc_vals, |
| 84 | cause->choice.misc)); |
| 85 | break; |
| 86 | } |
| 87 | return buf; |
| 88 | } |
| 89 | |
| 90 | |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 91 | static int rua_rx_init_connect(struct msgb *msg, ANY_t *in) |
Harald Welte | 64b4ebe | 2015-09-10 19:29:59 +0200 | [diff] [blame] | 92 | { |
| 93 | RUA_ConnectIEs_t ies; |
| 94 | uint32_t context_id; |
| 95 | int rc; |
| 96 | |
| 97 | rc = rua_decode_connecties(&ies, in); |
| 98 | if (rc < 0) |
| 99 | return rc; |
| 100 | |
| 101 | context_id = asn1bitstr_to_u32(&ies.context_ID); |
| 102 | |
| 103 | DEBUGP(DMAIN, "Connect.req(ctx=0x%x, %s)\n", context_id, |
| 104 | ies.establishment_Cause == RUA_Establishment_Cause_emergency_call |
| 105 | ? "emergency" : "normal"); |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 106 | /* FIXME */ |
Harald Welte | 64b4ebe | 2015-09-10 19:29:59 +0200 | [diff] [blame] | 107 | } |
| 108 | |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 109 | static int rua_rx_init_disconnect(struct msgb *msg, ANY_t *in) |
Harald Welte | 64b4ebe | 2015-09-10 19:29:59 +0200 | [diff] [blame] | 110 | { |
| 111 | RUA_DisconnectIEs_t ies; |
| 112 | uint32_t context_id; |
| 113 | int rc; |
| 114 | |
| 115 | rc = rua_decode_disconnecties(&ies, in); |
| 116 | if (rc < 0) |
| 117 | return rc; |
| 118 | |
| 119 | context_id = asn1bitstr_to_u32(&ies.context_ID); |
| 120 | |
| 121 | DEBUGP(DMAIN, "Disconnect.req(ctx=0x%x,cause=%s)\n", context_id, |
| 122 | rua_cause_str(&ies.cause)); |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 123 | /* FIXME */ |
Harald Welte | 64b4ebe | 2015-09-10 19:29:59 +0200 | [diff] [blame] | 124 | } |
| 125 | |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 126 | static int rua_rx_init_dt(struct msgb *msg, ANY_t *in) |
Harald Welte | 64b4ebe | 2015-09-10 19:29:59 +0200 | [diff] [blame] | 127 | { |
| 128 | RUA_DirectTransferIEs_t ies; |
| 129 | uint32_t context_id; |
| 130 | int rc; |
| 131 | |
| 132 | rc = rua_decode_directtransferies(&ies, in); |
| 133 | if (rc < 0) |
| 134 | return rc; |
| 135 | |
| 136 | context_id = asn1bitstr_to_u32(&ies.context_ID); |
| 137 | |
| 138 | DEBUGP(DMAIN, "Data.req(ctx=0x%x)\n", context_id); |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 139 | /* FIXME */ |
Harald Welte | 64b4ebe | 2015-09-10 19:29:59 +0200 | [diff] [blame] | 140 | |
| 141 | } |
| 142 | |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 143 | static int rua_rx_init_udt(struct msgb *msg, ANY_t *in) |
Harald Welte | 64b4ebe | 2015-09-10 19:29:59 +0200 | [diff] [blame] | 144 | { |
| 145 | RUA_ConnectionlessTransferIEs_t ies; |
| 146 | int rc; |
| 147 | |
| 148 | rc = rua_decode_connectionlesstransferies(&ies, in); |
| 149 | if (rc < 0) |
| 150 | return rc; |
| 151 | |
| 152 | DEBUGP(DMAIN, "UData.req()\n"); |
| 153 | |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 154 | /* FIXME: pass on to RANAP */ |
| 155 | rc = hnbgw_ranap_rx(msg, ies.ranaP_Message.buf, ies.ranaP_Message.size); |
| 156 | /* FIXME: what to do with the asn1c-allocated memory */ |
| 157 | |
| 158 | return rc; |
Harald Welte | 64b4ebe | 2015-09-10 19:29:59 +0200 | [diff] [blame] | 159 | } |
| 160 | |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 161 | |
| 162 | static int rua_rx_init_err_ind(struct msgb *msg, ANY_t *in) |
Harald Welte | 64b4ebe | 2015-09-10 19:29:59 +0200 | [diff] [blame] | 163 | { |
| 164 | RUA_ErrorIndicationIEs_t ies; |
| 165 | int rc; |
| 166 | |
| 167 | rc = rua_decode_errorindicationies(&ies, in); |
| 168 | if (rc < 0) |
| 169 | return rc; |
| 170 | |
| 171 | } |
Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 172 | |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 173 | static int rua_rx_initiating_msg(struct msgb *msg, RUA_InitiatingMessage_t *imsg) |
Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 174 | { |
| 175 | int rc; |
| 176 | |
| 177 | switch (imsg->procedureCode) { |
| 178 | case RUA_ProcedureCode_id_Connect: |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 179 | rc = rua_rx_init_connect(msg, &imsg->value); |
Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 180 | break; |
| 181 | case RUA_ProcedureCode_id_DirectTransfer: |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 182 | rc = rua_rx_init_dt(msg, &imsg->value); |
Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 183 | break; |
| 184 | case RUA_ProcedureCode_id_Disconnect: |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 185 | rc = rua_rx_init_disconnect(msg, &imsg->value); |
Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 186 | break; |
| 187 | case RUA_ProcedureCode_id_ConnectionlessTransfer: |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 188 | rc = rua_rx_init_udt(msg, &imsg->value); |
Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 189 | break; |
| 190 | case RUA_ProcedureCode_id_ErrorIndication: |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 191 | rc = rua_rx_init_err_ind(msg, &imsg->value); |
Harald Welte | 64b4ebe | 2015-09-10 19:29:59 +0200 | [diff] [blame] | 192 | break; |
Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 193 | case RUA_ProcedureCode_id_privateMessage: |
| 194 | break; |
| 195 | default: |
Harald Welte | 64b4ebe | 2015-09-10 19:29:59 +0200 | [diff] [blame] | 196 | return -1; |
Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 197 | } |
| 198 | } |
| 199 | |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 200 | static int rua_rx_successful_outcome_msg(struct msgb *msg, RUA_SuccessfulOutcome_t *in) |
Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 201 | { |
| 202 | |
| 203 | } |
| 204 | |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 205 | static int rua_rx_unsuccessful_outcome_msg(struct msgb *msg, RUA_UnsuccessfulOutcome_t *in) |
Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 206 | { |
| 207 | |
| 208 | } |
| 209 | |
| 210 | |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 211 | static int _hnbgw_rua_rx(struct msgb *msg, RUA_RUA_PDU_t *pdu) |
Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 212 | { |
| 213 | int rc; |
| 214 | |
| 215 | /* it's a bit odd that we can't dispatch on procedure code, but |
| 216 | * that's not possible */ |
| 217 | switch (pdu->present) { |
| 218 | case RUA_RUA_PDU_PR_initiatingMessage: |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 219 | rc = rua_rx_initiating_msg(msg, &pdu->choice.initiatingMessage); |
Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 220 | break; |
| 221 | case RUA_RUA_PDU_PR_successfulOutcome: |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 222 | rc = rua_rx_successful_outcome_msg(msg, &pdu->choice.successfulOutcome); |
Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 223 | break; |
| 224 | case RUA_RUA_PDU_PR_unsuccessfulOutcome: |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 225 | rc = rua_rx_unsuccessful_outcome_msg(msg, &pdu->choice.unsuccessfulOutcome); |
Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 226 | break; |
| 227 | default: |
| 228 | return -1; |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | int hnbgw_rua_rx(struct hnb_context *hnb, struct msgb *msg) |
| 233 | { |
| 234 | RUA_RUA_PDU_t _pdu, *pdu = &_pdu; |
| 235 | asn_dec_rval_t dec_ret; |
| 236 | int rc; |
| 237 | |
| 238 | /* decode and handle to _hnbgw_hnbap_rx() */ |
| 239 | |
| 240 | memset(pdu, 0, sizeof(*pdu)); |
| 241 | dec_ret = aper_decode(NULL, &asn_DEF_RUA_RUA_PDU, (void **) &pdu, |
| 242 | msg->data, msgb_length(msg), 0, 0); |
| 243 | if (dec_ret.code != RC_OK) { |
| 244 | LOGP(DMAIN, LOGL_ERROR, "Error in ASN.1 decode\n"); |
| 245 | return rc; |
| 246 | } |
| 247 | |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame^] | 248 | rc = _hnbgw_rua_rx(msg, pdu); |
Harald Welte | 318e4d5 | 2015-09-10 18:47:08 +0200 | [diff] [blame] | 249 | |
| 250 | return rc; |
| 251 | } |
| 252 | |
| 253 | |
| 254 | int hnbgw_rua_init(void) |
| 255 | { |
| 256 | |
| 257 | } |