Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame] | 1 | #include <osmocom/core/msgb.h> |
| 2 | #include <osmocom/core/utils.h> |
Harald Welte | 80401ad | 2015-09-11 19:48:06 +0200 | [diff] [blame^] | 3 | #include <osmocom/gsm/gsm48.h> |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame] | 4 | |
| 5 | #include <unistd.h> |
| 6 | #include <errno.h> |
| 7 | #include <string.h> |
| 8 | |
| 9 | #include "asn1helpers.h" |
| 10 | |
| 11 | #include "hnbgw.h" |
Harald Welte | e2e5d4d | 2015-09-10 23:49:45 +0200 | [diff] [blame] | 12 | #include "hnbgw_rua.h" |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame] | 13 | //#include "ranap_common.h" |
| 14 | |
| 15 | #include "ranap/RANAP_RANAP-PDU.h" |
| 16 | #include "ranap/RANAP_ResetAcknowledge.h" |
| 17 | #include "ranap/RANAP_Reset.h" |
| 18 | #include "ranap/RANAP_ProtocolIE-ID.h" |
| 19 | #include "ranap/RANAP_Cause.h" |
| 20 | #include "ranap/RANAP_CN-DomainIndicator.h" |
| 21 | #include "ranap/RANAP_GlobalRNC-ID.h" |
| 22 | #include "ranap/RANAP_CriticalityDiagnostics.h" |
| 23 | |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame] | 24 | /*********************************************************************** |
| 25 | * BEGIN auto-generated copy+pasted |
| 26 | ***********************************************************************/ |
| 27 | |
| 28 | /* this is copy+pasted from the asn1tostruct generated code that doesn't |
| 29 | * compile as a whole */ |
| 30 | |
| 31 | #define RANAP_DEBUG(x, args ...) DEBUGP(0, x, ## args) |
| 32 | |
| 33 | extern int asn1_xer_print; |
| 34 | |
| 35 | struct msgb *ranap_generate_successful_outcome( |
| 36 | e_RANAP_ProcedureCode procedureCode, |
| 37 | RANAP_Criticality_t criticality, |
| 38 | asn_TYPE_descriptor_t * td, |
| 39 | void *sptr); |
| 40 | |
| 41 | RANAP_IE_t *ranap_new_ie(RANAP_ProtocolIE_ID_t id, RANAP_Criticality_t criticality, |
| 42 | asn_TYPE_descriptor_t *type, void *sptr); |
| 43 | |
| 44 | #define RESETIES_RANAP_GLOBALRNC_ID_PRESENT (1 << 0) |
| 45 | |
| 46 | typedef struct RANAP_ResetIEs_s { |
| 47 | uint16_t presenceMask; |
| 48 | RANAP_Cause_t cause; |
| 49 | RANAP_CN_DomainIndicator_t cN_DomainIndicator; |
| 50 | RANAP_GlobalRNC_ID_t globalRNC_ID; ///< Optional field |
| 51 | } RANAP_ResetIEs_t; |
| 52 | |
| 53 | #define RESETACKNOWLEDGEIES_RANAP_CRITICALITYDIAGNOSTICS_PRESENT (1 << 0) |
| 54 | #define RESETACKNOWLEDGEIES_RANAP_GLOBALRNC_ID_PRESENT (1 << 1) |
| 55 | |
| 56 | typedef struct RANAP_ResetAcknowledgeIEs_s { |
| 57 | uint16_t presenceMask; |
| 58 | RANAP_CN_DomainIndicator_t cN_DomainIndicator; |
| 59 | RANAP_CriticalityDiagnostics_t criticalityDiagnostics; ///< Optional field |
| 60 | RANAP_GlobalRNC_ID_t globalRNC_ID; ///< Optional field |
| 61 | } RANAP_ResetAcknowledgeIEs_t; |
| 62 | |
| 63 | int ranap_decode_reseties( |
| 64 | RANAP_ResetIEs_t *resetIEs, |
| 65 | ANY_t *any_p) { |
| 66 | |
| 67 | RANAP_Reset_t reset; |
| 68 | RANAP_Reset_t *reset_p = &reset; |
| 69 | int i, decoded = 0; |
| 70 | int tempDecoded = 0; |
| 71 | assert(any_p != NULL); |
| 72 | assert(resetIEs != NULL); |
| 73 | |
| 74 | RANAP_DEBUG("Decoding message RANAP_ResetIEs (%s:%d)\n", __FILE__, __LINE__); |
| 75 | |
| 76 | ANY_to_type_aper(any_p, &asn_DEF_RANAP_Reset, (void**)&reset_p); |
| 77 | |
| 78 | for (i = 0; i < reset_p->reset_ies.list.count; i++) { |
| 79 | RANAP_IE_t *ie_p; |
| 80 | ie_p = reset_p->reset_ies.list.array[i]; |
| 81 | switch(ie_p->id) { |
| 82 | case RANAP_ProtocolIE_ID_id_Cause: |
| 83 | { |
| 84 | RANAP_Cause_t ranaP_Cause; |
| 85 | RANAP_Cause_t *ranaP_Cause_p = &ranaP_Cause; |
| 86 | tempDecoded = ANY_to_type_aper(&ie_p->value, &asn_DEF_RANAP_Cause, (void**)&ranaP_Cause_p); |
| 87 | if (tempDecoded < 0) { |
| 88 | RANAP_DEBUG("Decoding of IE cause failed\n"); |
| 89 | return -1; |
| 90 | } |
| 91 | decoded += tempDecoded; |
| 92 | if (asn1_xer_print) |
| 93 | xer_fprint(stdout, &asn_DEF_RANAP_Cause, ranaP_Cause_p); |
| 94 | memcpy(&resetIEs->cause, ranaP_Cause_p, sizeof(RANAP_Cause_t)); |
| 95 | } break; |
| 96 | case RANAP_ProtocolIE_ID_id_CN_DomainIndicator: |
| 97 | { |
| 98 | RANAP_CN_DomainIndicator_t ranaP_CNDomainIndicator; |
| 99 | RANAP_CN_DomainIndicator_t *ranaP_CNDomainIndicator_p = &ranaP_CNDomainIndicator; |
| 100 | tempDecoded = ANY_to_type_aper(&ie_p->value, &asn_DEF_RANAP_CN_DomainIndicator, (void**)&ranaP_CNDomainIndicator_p); |
| 101 | if (tempDecoded < 0) { |
| 102 | RANAP_DEBUG("Decoding of IE cN_DomainIndicator failed\n"); |
| 103 | return -1; |
| 104 | } |
| 105 | decoded += tempDecoded; |
| 106 | if (asn1_xer_print) |
| 107 | xer_fprint(stdout, &asn_DEF_RANAP_CN_DomainIndicator, ranaP_CNDomainIndicator_p); |
| 108 | memcpy(&resetIEs->cN_DomainIndicator, ranaP_CNDomainIndicator_p, sizeof(RANAP_CN_DomainIndicator_t)); |
| 109 | } break; |
| 110 | /* Optional field */ |
| 111 | case RANAP_ProtocolIE_ID_id_GlobalRNC_ID: |
| 112 | { |
| 113 | #if 0 |
| 114 | RANAP_GlobalRNC_ID_t ranaP_GlobalRNCID; |
| 115 | RANAP_GlobalRNC_ID_t *ranaP_GlobalRNCID_p = &ranaP_GlobalRNCID; |
| 116 | resetIEs->presenceMask |= RESETIES_RANAP_GLOBALRNC_ID_PRESENT; |
| 117 | tempDecoded = ANY_to_type_aper(&ie_p->value, &asn_DEF_RANAP_GlobalRNC_ID, (void**)&ranaP_GlobalRNCID_p); |
| 118 | if (tempDecoded < 0) { |
| 119 | RANAP_DEBUG("Decoding of IE globalRNC_ID failed\n"); |
| 120 | return -1; |
| 121 | } |
| 122 | decoded += tempDecoded; |
| 123 | if (asn1_xer_print) |
| 124 | xer_fprint(stdout, &asn_DEF_RANAP_GlobalRNC_ID, ranaP_GlobalRNCID_p); |
| 125 | memcpy(&resetIEs->globalRNC_ID, ranaP_GlobalRNCID_p, sizeof(RANAP_GlobalRNC_ID_t)); |
| 126 | #endif |
| 127 | } break; |
| 128 | default: |
| 129 | RANAP_DEBUG("Unknown protocol IE id (%d) for message reseties\n", (int)ie_p->id); |
| 130 | return -1; |
| 131 | } |
| 132 | } |
| 133 | return decoded; |
| 134 | } |
| 135 | |
| 136 | int ranap_encode_resetacknowledgeies( |
| 137 | RANAP_ResetAcknowledge_t *resetAcknowledge, |
| 138 | RANAP_ResetAcknowledgeIEs_t *resetAcknowledgeIEs) { |
| 139 | |
| 140 | RANAP_IE_t *ie; |
| 141 | |
| 142 | if ((ie = ranap_new_ie(RANAP_ProtocolIE_ID_id_CN_DomainIndicator, |
| 143 | RANAP_Criticality_reject, |
| 144 | &asn_DEF_RANAP_CN_DomainIndicator, |
| 145 | &resetAcknowledgeIEs->cN_DomainIndicator)) == NULL) { |
| 146 | return -1; |
| 147 | } |
| 148 | ASN_SEQUENCE_ADD(&resetAcknowledge->resetAcknowledge_ies.list, ie); |
| 149 | |
| 150 | /* Optional field */ |
| 151 | if ((resetAcknowledgeIEs->presenceMask & RESETACKNOWLEDGEIES_RANAP_CRITICALITYDIAGNOSTICS_PRESENT) |
| 152 | == RESETACKNOWLEDGEIES_RANAP_CRITICALITYDIAGNOSTICS_PRESENT) { |
| 153 | if ((ie = ranap_new_ie(RANAP_ProtocolIE_ID_id_CriticalityDiagnostics, |
| 154 | RANAP_Criticality_ignore, |
| 155 | &asn_DEF_RANAP_CriticalityDiagnostics, |
| 156 | &resetAcknowledgeIEs->criticalityDiagnostics)) == NULL) { |
| 157 | return -1; |
| 158 | } |
| 159 | ASN_SEQUENCE_ADD(&resetAcknowledge->resetAcknowledge_ies.list, ie); |
| 160 | } |
| 161 | |
| 162 | /* Optional field */ |
| 163 | if ((resetAcknowledgeIEs->presenceMask & RESETACKNOWLEDGEIES_RANAP_GLOBALRNC_ID_PRESENT) |
| 164 | == RESETACKNOWLEDGEIES_RANAP_GLOBALRNC_ID_PRESENT) { |
| 165 | if ((ie = ranap_new_ie(RANAP_ProtocolIE_ID_id_GlobalRNC_ID, |
| 166 | RANAP_Criticality_ignore, |
| 167 | &asn_DEF_RANAP_GlobalRNC_ID, |
| 168 | &resetAcknowledgeIEs->globalRNC_ID)) == NULL) { |
| 169 | return -1; |
| 170 | } |
| 171 | ASN_SEQUENCE_ADD(&resetAcknowledge->resetAcknowledge_ies.list, ie); |
| 172 | } |
| 173 | |
| 174 | return 0; |
| 175 | } |
| 176 | |
Harald Welte | cc27beb | 2015-09-11 18:45:39 +0200 | [diff] [blame] | 177 | #include "ranap/RANAP_InitialUE-Message.h" |
| 178 | #include "ranap/RANAP_CN-DomainIndicator.h" |
| 179 | #include "ranap/RANAP_LAI.h" |
| 180 | #include "ranap/RANAP_SAI.h" |
| 181 | #include "ranap/RANAP_NAS-PDU.h" |
| 182 | #include "ranap/RANAP_IuSignallingConnectionIdentifier.h" |
| 183 | #include "ranap/RANAP_GlobalCN-ID.h" |
| 184 | |
| 185 | typedef struct RANAP_InitialUE_MessageIEs_s { |
| 186 | RANAP_CN_DomainIndicator_t cN_DomainIndicator; |
| 187 | RANAP_LAI_t lai; |
| 188 | RANAP_SAI_t sai; |
| 189 | RANAP_NAS_PDU_t nas_pdu; |
| 190 | RANAP_IuSignallingConnectionIdentifier_t iuSigConId; |
| 191 | RANAP_GlobalRNC_ID_t globalRNC_ID; |
| 192 | } RANAP_InitialUE_MessageIEs_t; |
| 193 | |
| 194 | int ranap_decode_initialue_messageies( |
| 195 | RANAP_InitialUE_MessageIEs_t *initialUE_MessageIEs, |
| 196 | ANY_t *any_p) { |
| 197 | |
| 198 | RANAP_InitialUE_Message_t initialUE_Message; |
| 199 | RANAP_InitialUE_Message_t *initialUE_Message_p = &initialUE_Message; |
| 200 | int i, decoded = 0; |
| 201 | int tempDecoded = 0; |
| 202 | assert(any_p != NULL); |
| 203 | assert(initialUE_MessageIEs != NULL); |
| 204 | |
| 205 | RANAP_DEBUG("Decoding message RANAP_InitialUE_MessageIEs (%s:%d)\n", __FILE__, __LINE__); |
| 206 | |
| 207 | ANY_to_type_aper(any_p, &asn_DEF_RANAP_InitialUE_Message, (void**)&initialUE_Message_p); |
| 208 | |
| 209 | for (i = 0; i < initialUE_Message_p->initialUE_Message_ies.list.count; i++) { |
| 210 | RANAP_IE_t *ie_p; |
| 211 | ie_p = initialUE_Message_p->initialUE_Message_ies.list.array[i]; |
| 212 | switch(ie_p->id) { |
| 213 | case RANAP_ProtocolIE_ID_id_CN_DomainIndicator: |
| 214 | { |
| 215 | RANAP_CN_DomainIndicator_t ranaP_CNDomainIndicator; |
| 216 | RANAP_CN_DomainIndicator_t *ranaP_CNDomainIndicator_p = &ranaP_CNDomainIndicator; |
| 217 | tempDecoded = ANY_to_type_aper(&ie_p->value, &asn_DEF_RANAP_CN_DomainIndicator, (void**)&ranaP_CNDomainIndicator_p); |
| 218 | if (tempDecoded < 0) { |
| 219 | RANAP_DEBUG("Decoding of IE cN_DomainIndicator failed\n"); |
| 220 | return -1; |
| 221 | } |
| 222 | decoded += tempDecoded; |
| 223 | if (asn1_xer_print) |
| 224 | xer_fprint(stdout, &asn_DEF_RANAP_CN_DomainIndicator, ranaP_CNDomainIndicator_p); |
| 225 | memcpy(&initialUE_MessageIEs->cN_DomainIndicator, ranaP_CNDomainIndicator_p, sizeof(RANAP_CN_DomainIndicator_t)); |
| 226 | } break; |
| 227 | case RANAP_ProtocolIE_ID_id_LAI: |
| 228 | { |
| 229 | RANAP_LAI_t ranap_lai; |
| 230 | RANAP_LAI_t *ranap_lai_p = &ranap_lai; |
| 231 | tempDecoded = ANY_to_type_aper(&ie_p->value, &asn_DEF_RANAP_LAI, (void**)&ranap_lai_p); |
| 232 | if (tempDecoded < 0) { |
| 233 | RANAP_DEBUG("Decoding of IE lai failed\n"); |
| 234 | return -1; |
| 235 | } |
| 236 | decoded += tempDecoded; |
| 237 | if (asn1_xer_print) |
| 238 | xer_fprint(stdout, &asn_DEF_RANAP_LAI, ranap_lai_p); |
| 239 | memcpy(&initialUE_MessageIEs->lai, ranap_lai_p, sizeof(RANAP_LAI_t)); |
| 240 | } break; |
| 241 | case RANAP_ProtocolIE_ID_id_SAI: |
| 242 | { |
| 243 | RANAP_SAI_t ranap_sai; |
| 244 | RANAP_SAI_t *ranap_sai_p = &ranap_sai; |
| 245 | tempDecoded = ANY_to_type_aper(&ie_p->value, &asn_DEF_RANAP_SAI, (void**)&ranap_sai_p); |
| 246 | if (tempDecoded < 0) { |
| 247 | RANAP_DEBUG("Decoding of IE sai failed\n"); |
| 248 | return -1; |
| 249 | } |
| 250 | decoded += tempDecoded; |
| 251 | if (asn1_xer_print) |
| 252 | xer_fprint(stdout, &asn_DEF_RANAP_SAI, ranap_sai_p); |
| 253 | memcpy(&initialUE_MessageIEs->sai, ranap_sai_p, sizeof(RANAP_SAI_t)); |
| 254 | } break; |
| 255 | case RANAP_ProtocolIE_ID_id_NAS_PDU: |
| 256 | { |
| 257 | RANAP_NAS_PDU_t ranap_naspdu; |
| 258 | RANAP_NAS_PDU_t *ranap_naspdu_p = &ranap_naspdu; |
| 259 | tempDecoded = ANY_to_type_aper(&ie_p->value, &asn_DEF_RANAP_NAS_PDU, (void**)&ranap_naspdu_p); |
| 260 | if (tempDecoded < 0) { |
| 261 | RANAP_DEBUG("Decoding of IE nas_pdu failed\n"); |
| 262 | return -1; |
| 263 | } |
| 264 | decoded += tempDecoded; |
| 265 | if (asn1_xer_print) |
| 266 | xer_fprint(stdout, &asn_DEF_RANAP_NAS_PDU, ranap_naspdu_p); |
| 267 | memcpy(&initialUE_MessageIEs->nas_pdu, ranap_naspdu_p, sizeof(RANAP_NAS_PDU_t)); |
| 268 | } break; |
| 269 | case RANAP_ProtocolIE_ID_id_IuSigConId: |
| 270 | { |
| 271 | RANAP_IuSignallingConnectionIdentifier_t ranaP_IuSignallingConnectionIdentifier; |
| 272 | RANAP_IuSignallingConnectionIdentifier_t *ranaP_IuSignallingConnectionIdentifier_p = &ranaP_IuSignallingConnectionIdentifier; |
| 273 | tempDecoded = ANY_to_type_aper(&ie_p->value, &asn_DEF_RANAP_IuSignallingConnectionIdentifier, (void**)&ranaP_IuSignallingConnectionIdentifier_p); |
| 274 | if (tempDecoded < 0) { |
| 275 | RANAP_DEBUG("Decoding of IE iuSigConId failed\n"); |
| 276 | return -1; |
| 277 | } |
| 278 | decoded += tempDecoded; |
| 279 | if (asn1_xer_print) |
| 280 | xer_fprint(stdout, &asn_DEF_RANAP_IuSignallingConnectionIdentifier, ranaP_IuSignallingConnectionIdentifier_p); |
| 281 | memcpy(&initialUE_MessageIEs->iuSigConId, ranaP_IuSignallingConnectionIdentifier_p, sizeof(RANAP_IuSignallingConnectionIdentifier_t)); |
| 282 | } break; |
| 283 | case RANAP_ProtocolIE_ID_id_GlobalRNC_ID: |
| 284 | { |
| 285 | RANAP_GlobalRNC_ID_t ranaP_GlobalRNCID; |
| 286 | RANAP_GlobalRNC_ID_t *ranaP_GlobalRNCID_p = &ranaP_GlobalRNCID; |
| 287 | tempDecoded = ANY_to_type_aper(&ie_p->value, &asn_DEF_RANAP_GlobalRNC_ID, (void**)&ranaP_GlobalRNCID_p); |
| 288 | if (tempDecoded < 0) { |
| 289 | RANAP_DEBUG("Decoding of IE globalRNC_ID failed\n"); |
| 290 | return -1; |
| 291 | } |
| 292 | decoded += tempDecoded; |
| 293 | if (asn1_xer_print) |
| 294 | xer_fprint(stdout, &asn_DEF_RANAP_GlobalRNC_ID, ranaP_GlobalRNCID_p); |
| 295 | memcpy(&initialUE_MessageIEs->globalRNC_ID, ranaP_GlobalRNCID_p, sizeof(RANAP_GlobalRNC_ID_t)); |
| 296 | } break; |
| 297 | default: |
| 298 | RANAP_DEBUG("Unknown protocol IE id (%d) for message initialue_messageies\n", (int)ie_p->id); |
| 299 | return -1; |
| 300 | } |
| 301 | } |
| 302 | return decoded; |
| 303 | } |
| 304 | |
| 305 | |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame] | 306 | /*********************************************************************** |
| 307 | * END auto-generated copy+pasted |
| 308 | ***********************************************************************/ |
| 309 | |
Harald Welte | e2e5d4d | 2015-09-10 23:49:45 +0200 | [diff] [blame] | 310 | static int ranap_tx_reset_ack(struct hnb_context *hnb, |
| 311 | RANAP_CN_DomainIndicator_t domain) |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame] | 312 | { |
Harald Welte | e2e5d4d | 2015-09-10 23:49:45 +0200 | [diff] [blame] | 313 | RANAP_ResetAcknowledge_t out; |
| 314 | RANAP_ResetAcknowledgeIEs_t ies; |
| 315 | struct msgb *msg; |
| 316 | int rc; |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame] | 317 | |
| 318 | memset(&ies, 0, sizeof(ies)); |
Harald Welte | e2e5d4d | 2015-09-10 23:49:45 +0200 | [diff] [blame] | 319 | ies.cN_DomainIndicator = domain; |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame] | 320 | |
Harald Welte | e2e5d4d | 2015-09-10 23:49:45 +0200 | [diff] [blame] | 321 | memset(&out, 0, sizeof(out)); |
| 322 | rc = ranap_encode_resetacknowledgeies(&out, &ies); |
| 323 | if (rc < 0) { |
| 324 | LOGP(DMAIN, LOGL_ERROR, "error encoding reset ack IEs: %d\n", rc); |
| 325 | return rc; |
| 326 | } |
| 327 | |
| 328 | msg = ranap_generate_successful_outcome(RANAP_ProcedureCode_id_Reset, |
| 329 | RANAP_Criticality_reject, |
| 330 | &asn_DEF_RANAP_ResetAcknowledge, |
| 331 | &out); |
| 332 | if (!msg) |
| 333 | return -1; |
| 334 | |
| 335 | msg->dst = hnb; |
| 336 | |
| 337 | rc = rua_tx_udt(msg); |
| 338 | |
| 339 | return rc; |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame] | 340 | } |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame] | 341 | |
| 342 | static int ranap_rx_init_reset(struct hnb_context *hnb, ANY_t *in) |
| 343 | { |
| 344 | RANAP_ResetIEs_t ies; |
| 345 | int rc; |
| 346 | |
| 347 | rc = ranap_decode_reseties(&ies, in); |
| 348 | if (rc < 0) |
| 349 | return rc; |
| 350 | |
| 351 | DEBUGP(DMAIN, "RESET.req\n"); |
| 352 | |
Harald Welte | 80401ad | 2015-09-11 19:48:06 +0200 | [diff] [blame^] | 353 | /* FIXME: Actually we have to wait for some guard time? */ |
| 354 | /* FIXME: Reset all resources related to this HNB/RNC */ |
Harald Welte | e2e5d4d | 2015-09-10 23:49:45 +0200 | [diff] [blame] | 355 | ranap_tx_reset_ack(hnb, ies.cN_DomainIndicator); |
| 356 | |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame] | 357 | return 0; |
| 358 | } |
| 359 | |
Harald Welte | 80401ad | 2015-09-11 19:48:06 +0200 | [diff] [blame^] | 360 | int ranap_parse_lai(struct gprs_ra_id *ra_id, const RANAP_LAI_t *lai) |
| 361 | { |
| 362 | uint8_t *ptr = lai->pLMNidentity.buf; |
| 363 | |
| 364 | /* TS 25.413 9.2.3.55 */ |
| 365 | if (lai->pLMNidentity.size != 3) |
| 366 | return -1; |
| 367 | |
| 368 | ra_id->mcc = (ptr[0] & 0xF) * 100 + |
| 369 | (ptr[0] >> 4) * 10 + |
| 370 | (ptr[1] & 0xF); |
| 371 | ra_id->mnc = (ptr[2] & 0xF) + |
| 372 | (ptr[2] >> 4) * 10; |
| 373 | if ((ptr[1] >> 4) != 0xF) |
| 374 | ra_id->mnc += (ptr[1] >> 4) * 100; |
| 375 | |
| 376 | ra_id->lac = asn1str_to_u16(&lai->lAC); |
| 377 | |
| 378 | /* TS 25.413 9.2.3.6 */ |
| 379 | if (ra_id->lac == 0 || ra_id->lac == 0xfffe) |
| 380 | return -1; |
| 381 | |
| 382 | return 0; |
| 383 | } |
| 384 | |
| 385 | static int ranap_rx_init_ue_msg(struct hnb_context *hnb, ANY_t *in) |
| 386 | { |
| 387 | RANAP_InitialUE_MessageIEs_t ies; |
| 388 | struct gprs_ra_id ra_id; |
| 389 | int rc; |
| 390 | |
| 391 | rc = ranap_decode_initialue_messageies(&ies, in); |
| 392 | if (rc < 0) |
| 393 | return rc; |
| 394 | |
| 395 | /* location area ID of the serving cell */ |
| 396 | ranap_parse_lai(&ra_id, &ies.lai); |
| 397 | |
| 398 | DEBUGP(DMAIN, "%u-%u-%u: InitialUE: %s\n", ra_id.mcc, ra_id.mnc, |
| 399 | ra_id.lac, osmo_hexdump(ies.nas_pdu.buf, ies.nas_pdu.size)); |
| 400 | /* FIXME: hand NAS PDU into MSC */ |
| 401 | |
| 402 | return 0; |
| 403 | } |
| 404 | |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame] | 405 | static int ranap_rx_initiating_msg(struct hnb_context *hnb, RANAP_InitiatingMessage_t *imsg) |
| 406 | { |
| 407 | int rc; |
| 408 | |
| 409 | switch (imsg->procedureCode) { |
| 410 | case RANAP_ProcedureCode_id_Reset: |
| 411 | rc = ranap_rx_init_reset(hnb, &imsg->value); |
| 412 | break; |
Harald Welte | 80401ad | 2015-09-11 19:48:06 +0200 | [diff] [blame^] | 413 | case RANAP_ProcedureCode_id_InitialUE_Message: |
| 414 | rc = ranap_rx_init_ue_msg(hnb, &imsg->value); |
| 415 | break; |
Harald Welte | 350814a | 2015-09-10 22:32:15 +0200 | [diff] [blame] | 416 | } |
| 417 | } |
| 418 | |
| 419 | static int _hnbgw_ranap_rx(struct hnb_context *hnb, RANAP_RANAP_PDU_t *pdu) |
| 420 | { |
| 421 | int rc; |
| 422 | |
| 423 | switch (pdu->present) { |
| 424 | case RANAP_RANAP_PDU_PR_initiatingMessage: |
| 425 | rc = ranap_rx_initiating_msg(hnb, &pdu->choice.initiatingMessage); |
| 426 | break; |
| 427 | case RANAP_RANAP_PDU_PR_successfulOutcome: |
| 428 | break; |
| 429 | case RANAP_RANAP_PDU_PR_unsuccessfulOutcome: |
| 430 | break; |
| 431 | default: |
| 432 | break; |
| 433 | } |
| 434 | } |
| 435 | |
| 436 | |
| 437 | int hnbgw_ranap_rx(struct msgb *msg, uint8_t *data, size_t len) |
| 438 | { |
| 439 | RANAP_RANAP_PDU_t _pdu, *pdu = &_pdu; |
| 440 | asn_dec_rval_t dec_ret; |
| 441 | int rc; |
| 442 | |
| 443 | memset(pdu, 0, sizeof(*pdu)); |
| 444 | dec_ret = aper_decode(NULL,&asn_DEF_RANAP_RANAP_PDU, (void **) &pdu, |
| 445 | data, len, 0, 0); |
| 446 | if (dec_ret.code != RC_OK) { |
| 447 | LOGP(DMAIN, LOGL_ERROR, "Error in RANAP ASN.1 decode\n"); |
| 448 | return rc; |
| 449 | } |
| 450 | |
| 451 | rc = _hnbgw_ranap_rx(msg->dst, pdu); |
| 452 | |
| 453 | return rc; |
| 454 | } |
| 455 | |
| 456 | int hnbgw_ranap_init(void) |
| 457 | { |
| 458 | |
| 459 | } |