Harald Welte | f8db61b | 2015-12-18 17:29:59 +0100 | [diff] [blame] | 1 | /* high-level RANAP messsage generation code */ |
| 2 | |
| 3 | /* (C) 2015 by Harald Welte <laforge@gnumonks.org> |
| 4 | * All Rights Reserved |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU Affero General Public License as published by |
| 8 | * the Free Software Foundation; either version 3 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU Affero General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Affero General Public License |
| 17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 18 | * |
| 19 | */ |
| 20 | |
| 21 | #include <osmocom/core/utils.h> |
| 22 | #include <osmocom/core/msgb.h> |
| 23 | |
| 24 | #include "asn1helpers.h" |
| 25 | #include "iu_helpers.h" |
| 26 | |
| 27 | #include "ranap_common.h" |
| 28 | #include "ranap_ies_defs.h" |
| 29 | #include "ranap_msg_factory.h" |
| 30 | |
| 31 | #include "hnbgw.h" |
| 32 | |
| 33 | /*! \brief allocate a new long and assing a value to it */ |
| 34 | static long *new_long(long in) |
| 35 | { |
| 36 | long *out = CALLOC(1, sizeof(long)); |
| 37 | *out = in; |
| 38 | return out; |
| 39 | } |
| 40 | |
| 41 | /*! \brief generate RANAP DIRECT TRANSFER message */ |
| 42 | struct msgb *ranap_new_msg_dt(uint8_t sapi, const uint8_t *nas, unsigned int nas_len) |
| 43 | { |
| 44 | RANAP_DirectTransferIEs_t ies; |
| 45 | RANAP_DirectTransfer_t dt; |
| 46 | struct msgb *msg; |
| 47 | int rc; |
| 48 | |
| 49 | memset(&ies, 0, sizeof(ies)); |
| 50 | memset(&dt, 0, sizeof(dt)); |
| 51 | |
| 52 | /* only SAPI optional field shall be present for CN->RNC */ |
| 53 | ies.presenceMask = DIRECTTRANSFERIES_RANAP_SAPI_PRESENT; |
| 54 | |
| 55 | if (sapi == 3) |
| 56 | ies.sapi = RANAP_SAPI_sapi_3; |
| 57 | else |
| 58 | ies.sapi = RANAP_SAPI_sapi_0; |
| 59 | |
| 60 | ies.nas_pdu.buf = (uint8_t *) nas; |
| 61 | ies.nas_pdu.size = nas_len; |
| 62 | |
| 63 | /* ies -> dt */ |
| 64 | rc = ranap_encode_directtransferies(&dt, &ies); |
| 65 | |
| 66 | /* dt -> msg */ |
| 67 | msg = ranap_generate_initiating_message(RANAP_ProcedureCode_id_DirectTransfer, |
| 68 | RANAP_Criticality_reject, |
| 69 | &asn_DEF_RANAP_DirectTransfer, |
| 70 | &dt); |
| 71 | |
| 72 | /* release dynamic allocations attached to dt */ |
| 73 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_DirectTransfer, &dt); |
| 74 | |
| 75 | return msg; |
| 76 | } |
| 77 | |
| 78 | static const enum RANAP_IntegrityProtectionAlgorithm ip_alg[2] = { |
| 79 | RANAP_IntegrityProtectionAlgorithm_standard_UMTS_integrity_algorithm_UIA1, |
| 80 | RANAP_IntegrityProtectionAlgorithm_standard_UMTS_integrity_algorithm_UIA2, |
| 81 | }; |
| 82 | |
| 83 | static const RANAP_EncryptionAlgorithm_t enc_alg[2] = { |
| 84 | RANAP_EncryptionAlgorithm_standard_UMTS_encryption_algorith_UEA1, |
| 85 | RANAP_EncryptionAlgorithm_standard_UMTS_encryption_algorithm_UEA2, |
| 86 | }; |
| 87 | |
| 88 | /*! \brief generate RANAP SECURITY MODE COMMAND message */ |
| 89 | struct msgb *ranap_new_msg_sec_mod_cmd(const uint8_t *ik, const uint8_t *ck) |
| 90 | { |
| 91 | RANAP_SecurityModeCommandIEs_t ies; |
| 92 | RANAP_SecurityModeCommand_t out; |
| 93 | struct msgb *msg; |
| 94 | int i, rc; |
| 95 | |
| 96 | memset(&ies, 0, sizeof(ies)); |
| 97 | memset(&out, 0, sizeof(out)); |
| 98 | |
| 99 | ies.presenceMask = SECURITYMODECOMMANDIES_RANAP_ENCRYPTIONINFORMATION_PRESENT; |
| 100 | |
| 101 | for (i = 0; i < ARRAY_SIZE(ip_alg); i++) { |
| 102 | /* needs to be dynamically allocated, as |
| 103 | * SET_OF_free() will call FREEMEM() on it */ |
| 104 | RANAP_IntegrityProtectionAlgorithm_t *alg = CALLOC(1, sizeof(*alg)); |
| 105 | *alg = ip_alg[i]; |
| 106 | ASN_SEQUENCE_ADD(&ies.integrityProtectionInformation.permittedAlgorithms, alg); |
| 107 | } |
| 108 | |
| 109 | BIT_STRING_fromBuf(&ies.integrityProtectionInformation.key, ik, 16*8); |
| 110 | |
| 111 | if (ck) { |
| 112 | for (i = 0; i < ARRAY_SIZE(ip_alg); i++) { |
| 113 | /* needs to be dynamically allocated, as |
| 114 | * SET_OF_free() will call FREEMEM() on it */ |
| 115 | RANAP_EncryptionAlgorithm_t *alg = CALLOC(1, sizeof(*alg)); |
| 116 | *alg = enc_alg[i]; |
| 117 | ASN_SEQUENCE_ADD(&ies.encryptionInformation.permittedAlgorithms, alg); |
| 118 | } |
| 119 | BIT_STRING_fromBuf(&ies.encryptionInformation.key, ck, 16*8); |
| 120 | } |
| 121 | |
| 122 | ies.keyStatus = RANAP_KeyStatus_new; /* FIXME */ |
| 123 | |
| 124 | /* ies -> out */ |
| 125 | rc = ranap_encode_securitymodecommandies(&out, &ies); |
| 126 | |
| 127 | /* release dynamic allocations attached to ies */ |
| 128 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_IntegrityProtectionInformation, &ies.integrityProtectionInformation); |
| 129 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_EncryptionInformation, &ies.encryptionInformation); |
| 130 | |
| 131 | /* out -> msg */ |
| 132 | msg = ranap_generate_initiating_message(RANAP_ProcedureCode_id_SecurityModeControl, |
| 133 | RANAP_Criticality_reject, |
| 134 | &asn_DEF_RANAP_SecurityModeCommand, |
| 135 | &out); |
| 136 | |
| 137 | /* release dynamic allocations attached to out */ |
| 138 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_SecurityModeCommand, &out); |
| 139 | |
| 140 | return msg; |
| 141 | } |
| 142 | |
| 143 | /*! \brief generate RANAP COMMON ID message */ |
| 144 | struct msgb *ranap_new_msg_common_id(const char *imsi) |
| 145 | { |
| 146 | RANAP_CommonID_IEs_t ies; |
| 147 | RANAP_CommonID_t out; |
| 148 | struct msgb *msg; |
| 149 | int rc; |
| 150 | |
| 151 | memset(&ies, 0, sizeof(ies)); |
| 152 | memset(&out, 0, sizeof(out)); |
| 153 | |
| 154 | if (imsi) { |
| 155 | uint8_t *imsi_buf = CALLOC(1, 16); |
| 156 | rc = encode_iu_imsi(imsi_buf, 16, imsi); |
| 157 | ies.permanentNAS_UE_ID.present = RANAP_PermanentNAS_UE_ID_PR_iMSI; |
| 158 | ies.permanentNAS_UE_ID.choice.iMSI.buf = imsi_buf; |
| 159 | ies.permanentNAS_UE_ID.choice.iMSI.size = rc; |
| 160 | } else |
| 161 | ies.permanentNAS_UE_ID.present = RANAP_PermanentNAS_UE_ID_PR_NOTHING; |
| 162 | |
| 163 | /* ies -> out */ |
| 164 | rc = ranap_encode_commonid_ies(&out, &ies); |
| 165 | /* release dynamic allocations attached to ies */ |
| 166 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_PermanentNAS_UE_ID, &ies.permanentNAS_UE_ID); |
| 167 | if (rc < 0) |
| 168 | return NULL; |
| 169 | |
| 170 | /* out -> msg */ |
| 171 | msg = ranap_generate_initiating_message(RANAP_ProcedureCode_id_CommonID, |
| 172 | RANAP_Criticality_ignore, |
| 173 | &asn_DEF_RANAP_CommonID, |
| 174 | &out); |
| 175 | |
| 176 | /* release dynamic allocations attached to out */ |
| 177 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_CommonID, &out); |
| 178 | |
| 179 | return msg; |
| 180 | } |
| 181 | |
| 182 | /*! \brief generate RANAP IU RELEASE COMMAND message */ |
| 183 | struct msgb *ranap_new_msg_iu_rel_cmd(const RANAP_Cause_t *cause_in) |
| 184 | { |
| 185 | RANAP_Iu_ReleaseCommandIEs_t ies; |
| 186 | RANAP_Iu_ReleaseCommand_t out; |
| 187 | struct msgb *msg; |
| 188 | int rc; |
| 189 | |
| 190 | memset(&ies, 0, sizeof(ies)); |
| 191 | memset(&out, 0, sizeof(out)); |
| 192 | |
| 193 | memcpy(&ies.cause, cause_in, sizeof(ies.cause)); |
| 194 | |
| 195 | /* ies -> out */ |
| 196 | rc = ranap_encode_iu_releasecommandies(&out, &ies); |
| 197 | if (rc < 0) |
| 198 | return NULL; |
| 199 | |
| 200 | /* out -> msg */ |
| 201 | msg = ranap_generate_initiating_message(RANAP_ProcedureCode_id_Iu_Release, |
| 202 | RANAP_Criticality_reject, |
| 203 | &asn_DEF_RANAP_Iu_ReleaseCommand, |
| 204 | &out); |
| 205 | |
| 206 | /* release dynamic allocations attached to out */ |
| 207 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_Iu_ReleaseCommand, &out); |
| 208 | |
| 209 | return msg; |
| 210 | } |
| 211 | |
| 212 | /*! \brief generate RANAP PAGING COMMAND message */ |
| 213 | struct msgb *ranap_new_msg_paging_cmd(const char *imsi, const uint32_t *tmsi, int is_ps, uint32_t cause) |
| 214 | { |
| 215 | RANAP_PagingIEs_t ies; |
| 216 | RANAP_Paging_t out; |
| 217 | struct msgb *msg; |
| 218 | uint8_t *imsi_buf = CALLOC(1, 16); |
| 219 | int rc; |
| 220 | |
| 221 | memset(&ies, 0, sizeof(ies)); |
| 222 | memset(&out, 0, sizeof(out)); |
| 223 | |
| 224 | /* put together the 'ies' */ |
| 225 | if (is_ps) |
| 226 | ies.cN_DomainIndicator = RANAP_CN_DomainIndicator_ps_domain; |
| 227 | else |
| 228 | ies.cN_DomainIndicator = RANAP_CN_DomainIndicator_cs_domain; |
| 229 | |
| 230 | rc = encode_iu_imsi(imsi_buf, 16, imsi); |
| 231 | ies.permanentNAS_UE_ID.present = RANAP_PermanentNAS_UE_ID_PR_iMSI; |
| 232 | ies.permanentNAS_UE_ID.choice.iMSI.buf = imsi_buf; |
| 233 | ies.permanentNAS_UE_ID.choice.iMSI.size = rc; |
| 234 | |
| 235 | if (tmsi) { |
| 236 | uint32_t *tmsi_buf = CALLOC(1, sizeof(*tmsi_buf)); |
| 237 | *tmsi_buf = *tmsi; |
| 238 | ies.presenceMask |= PAGINGIES_RANAP_TEMPORARYUE_ID_PRESENT; |
| 239 | if (is_ps) { |
| 240 | ies.temporaryUE_ID.present = RANAP_TemporaryUE_ID_PR_p_TMSI; |
| 241 | ies.temporaryUE_ID.choice.tMSI.buf = tmsi_buf; |
| 242 | ies.temporaryUE_ID.choice.tMSI.size = sizeof(*tmsi_buf); |
| 243 | } else { |
| 244 | ies.temporaryUE_ID.present = RANAP_TemporaryUE_ID_PR_tMSI; |
| 245 | ies.temporaryUE_ID.choice.p_TMSI.buf = tmsi_buf; |
| 246 | ies.temporaryUE_ID.choice.p_TMSI.size = sizeof(*tmsi_buf); |
| 247 | } |
| 248 | } |
| 249 | |
| 250 | if (cause) { |
| 251 | ies.presenceMask |= PAGINGIES_RANAP_PAGINGCAUSE_PRESENT; |
| 252 | ies.pagingCause = cause; |
| 253 | } |
| 254 | |
| 255 | /* ies -> out */ |
| 256 | rc = ranap_encode_pagingies(&out, &ies); |
| 257 | /* release dynamic allocation attached to ies */ |
| 258 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_PermanentNAS_UE_ID, &ies.permanentNAS_UE_ID); |
| 259 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_TemporaryUE_ID, &ies.temporaryUE_ID); |
| 260 | if (rc < 0) |
| 261 | return NULL; |
| 262 | |
| 263 | /* out -> msg */ |
| 264 | msg = ranap_generate_initiating_message(RANAP_ProcedureCode_id_Paging, |
| 265 | RANAP_Criticality_reject, |
| 266 | &asn_DEF_RANAP_Paging, |
| 267 | &out); |
| 268 | |
| 269 | /* release dynamic allocations attached to out */ |
| 270 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_Paging, &out); |
| 271 | |
| 272 | return msg; |
| 273 | } |
| 274 | |
| 275 | static RANAP_SDU_ErrorRatio_t *new_sdu_error_ratio(long mantissa, long exponent) |
| 276 | { |
| 277 | RANAP_SDU_ErrorRatio_t *err = CALLOC(1, sizeof(*err)); |
| 278 | |
| 279 | err->mantissa = mantissa; |
| 280 | err->exponent = exponent; |
| 281 | |
| 282 | return err; |
| 283 | } |
| 284 | |
| 285 | |
| 286 | static RANAP_SDU_FormatInformationParameterItem_t * |
| 287 | new_format_info_pars(long sdu_size) |
| 288 | { |
| 289 | RANAP_SDU_FormatInformationParameterItem_t *fmti = CALLOC(1, sizeof(*fmti)); |
| 290 | fmti->subflowSDU_Size = new_long(sdu_size); |
| 291 | return fmti; |
| 292 | } |
| 293 | |
| 294 | enum sdu_par_profile { |
| 295 | SDUPAR_P_VOICE0, |
| 296 | SDUPAR_P_VOICE1, |
| 297 | SDUPAR_P_VOICE2, |
| 298 | SDUPAR_P_DATA, |
| 299 | }; |
| 300 | |
| 301 | /* See Chapter 5 of TS 26.102 */ |
| 302 | static RANAP_SDU_ParameterItem_t *new_sdu_par_item(enum sdu_par_profile profile) |
| 303 | { |
| 304 | RANAP_SDU_ParameterItem_t *sdui = CALLOC(1, sizeof(*sdui)); |
| 305 | RANAP_SDU_FormatInformationParameters_t *fmtip = CALLOC(1, sizeof(*fmtip)); |
| 306 | RANAP_SDU_FormatInformationParameterItem_t *fmti; |
| 307 | |
| 308 | switch (profile) { |
| 309 | case SDUPAR_P_VOICE0: |
| 310 | sdui->sDU_ErrorRatio = new_sdu_error_ratio(1, 5); |
| 311 | sdui->residualBitErrorRatio.mantissa = 1; |
| 312 | sdui->residualBitErrorRatio.exponent = 6; |
| 313 | sdui->deliveryOfErroneousSDU = RANAP_DeliveryOfErroneousSDU_yes; |
| 314 | sdui->sDU_FormatInformationParameters = fmtip; |
| 315 | fmti = new_format_info_pars(81); |
| 316 | ASN_SEQUENCE_ADD(fmtip, fmti); |
| 317 | fmti = new_format_info_pars(39); |
| 318 | ASN_SEQUENCE_ADD(fmtip, fmti); |
| 319 | /* FIXME: could be 10 SDU descriptors for AMR! */ |
| 320 | break; |
| 321 | case SDUPAR_P_VOICE1: |
| 322 | sdui->residualBitErrorRatio.mantissa = 1; |
| 323 | sdui->residualBitErrorRatio.exponent = 3; |
| 324 | sdui->deliveryOfErroneousSDU = RANAP_DeliveryOfErroneousSDU_no_error_detection_consideration; |
| 325 | sdui->sDU_FormatInformationParameters = fmtip; |
| 326 | fmti = new_format_info_pars(103); |
| 327 | ASN_SEQUENCE_ADD(fmtip, fmti); |
| 328 | fmti = new_format_info_pars(0); |
| 329 | ASN_SEQUENCE_ADD(fmtip, fmti); |
| 330 | /* FIXME: could be 10 SDU descriptors for AMR! */ |
| 331 | break; |
| 332 | case SDUPAR_P_VOICE2: |
| 333 | sdui->residualBitErrorRatio.mantissa = 5; |
| 334 | sdui->residualBitErrorRatio.exponent = 3; |
| 335 | sdui->deliveryOfErroneousSDU = RANAP_DeliveryOfErroneousSDU_no_error_detection_consideration; |
| 336 | sdui->sDU_FormatInformationParameters = fmtip; |
| 337 | fmti = new_format_info_pars(60); |
| 338 | ASN_SEQUENCE_ADD(fmtip, fmti); |
| 339 | fmti = new_format_info_pars(0); |
| 340 | ASN_SEQUENCE_ADD(fmtip, fmti); |
| 341 | /* FIXME: could be 10 SDU descriptors for AMR! */ |
| 342 | break; |
| 343 | case SDUPAR_P_DATA: |
| 344 | sdui->sDU_ErrorRatio = new_sdu_error_ratio(1, 4); |
| 345 | sdui->residualBitErrorRatio.mantissa = 1; |
| 346 | sdui->residualBitErrorRatio.exponent = 5; |
| 347 | sdui->deliveryOfErroneousSDU = RANAP_DeliveryOfErroneousSDU_no; |
| 348 | FREEMEM(fmtip); |
| 349 | break; |
| 350 | } |
| 351 | |
| 352 | return sdui; |
| 353 | } |
| 354 | |
| 355 | static RANAP_AllocationOrRetentionPriority_t * |
| 356 | new_alloc_ret_prio(RANAP_PriorityLevel_t level, int capability, int vulnerability, |
| 357 | int queueing_allowed) |
| 358 | { |
| 359 | RANAP_AllocationOrRetentionPriority_t *arp = CALLOC(1, sizeof(*arp)); |
| 360 | |
| 361 | arp->priorityLevel = level; |
| 362 | |
| 363 | if (capability) |
| 364 | arp->pre_emptionCapability = RANAP_Pre_emptionCapability_may_trigger_pre_emption; |
| 365 | else |
| 366 | arp->pre_emptionCapability = RANAP_Pre_emptionCapability_shall_not_trigger_pre_emption; |
| 367 | |
| 368 | if (vulnerability) |
| 369 | arp->pre_emptionVulnerability = RANAP_Pre_emptionVulnerability_pre_emptable; |
| 370 | else |
| 371 | arp->pre_emptionVulnerability = RANAP_Pre_emptionVulnerability_not_pre_emptable; |
| 372 | |
| 373 | if (queueing_allowed) |
| 374 | arp->queuingAllowed = RANAP_QueuingAllowed_queueing_allowed; |
| 375 | else |
| 376 | arp->queuingAllowed = RANAP_QueuingAllowed_queueing_not_allowed; |
| 377 | |
| 378 | return arp; |
| 379 | } |
| 380 | |
| 381 | /* See Chapter 5 of TS 26.102 */ |
| 382 | static RANAP_RAB_Parameters_t *new_rab_par_voice(void) |
| 383 | { |
| 384 | RANAP_RAB_Parameters_t *rab = CALLOC(1, sizeof(*rab)); |
| 385 | RANAP_SDU_ParameterItem_t *sdui; |
| 386 | |
| 387 | rab->trafficClass = RANAP_TrafficClass_conversational; |
| 388 | rab->rAB_AsymmetryIndicator = RANAP_RAB_AsymmetryIndicator_symmetric_bidirectional; |
| 389 | |
| 390 | ASN_SEQUENCE_ADD(&rab->maxBitrate.list, new_long(12200)); |
| 391 | rab->guaranteedBitRate = CALLOC(1, sizeof(*rab->guaranteedBitRate)); |
| 392 | ASN_SEQUENCE_ADD(rab->guaranteedBitRate, new_long(12200)); |
| 393 | rab->deliveryOrder = RANAP_DeliveryOrder_delivery_order_requested; |
| 394 | rab->maxSDU_Size = 244; |
| 395 | |
| 396 | sdui = new_sdu_par_item(SDUPAR_P_VOICE0); |
| 397 | ASN_SEQUENCE_ADD(&rab->sDU_Parameters, sdui); |
| 398 | sdui = new_sdu_par_item(SDUPAR_P_VOICE1); |
| 399 | ASN_SEQUENCE_ADD(&rab->sDU_Parameters, sdui); |
| 400 | sdui = new_sdu_par_item(SDUPAR_P_VOICE2); |
| 401 | ASN_SEQUENCE_ADD(&rab->sDU_Parameters, sdui); |
| 402 | |
| 403 | rab->transferDelay = new_long(80); |
| 404 | rab->allocationOrRetentionPriority = new_alloc_ret_prio(RANAP_PriorityLevel_no_priority, 0, 1, 0); |
| 405 | |
| 406 | rab->sourceStatisticsDescriptor = new_long(RANAP_SourceStatisticsDescriptor_speech); |
| 407 | |
| 408 | return rab; |
| 409 | } |
| 410 | |
| 411 | static RANAP_RAB_Parameters_t *new_rab_par_data(void) |
| 412 | { |
| 413 | RANAP_RAB_Parameters_t *rab = CALLOC(1, sizeof(*rab)); |
| 414 | RANAP_SDU_ParameterItem_t *sdui; |
| 415 | |
| 416 | rab->trafficClass = RANAP_TrafficClass_background; |
| 417 | rab->rAB_AsymmetryIndicator = RANAP_RAB_AsymmetryIndicator_asymmetric_bidirectional; |
| 418 | |
| 419 | ASN_SEQUENCE_ADD(&rab->maxBitrate.list, new_long(16000000)); |
| 420 | ASN_SEQUENCE_ADD(&rab->maxBitrate.list, new_long(8000000)); |
| 421 | rab->deliveryOrder = RANAP_DeliveryOrder_delivery_order_requested; |
| 422 | rab->maxSDU_Size = 8000; |
| 423 | |
| 424 | sdui = new_sdu_par_item(SDUPAR_P_DATA); |
| 425 | ASN_SEQUENCE_ADD(&rab->sDU_Parameters, sdui); |
| 426 | |
| 427 | rab->allocationOrRetentionPriority = new_alloc_ret_prio(RANAP_PriorityLevel_no_priority, 0, 0, 0); |
| 428 | |
| 429 | /* FIXME: RAB-Parameter-ExtendedMaxBitrateList for 42Mbps? */ |
| 430 | |
| 431 | return rab; |
| 432 | } |
| 433 | |
| 434 | static RANAP_TransportLayerInformation_t *new_transp_info_rtp(uint32_t ip, uint16_t port) |
| 435 | { |
| 436 | RANAP_TransportLayerInformation_t *tli = CALLOC(1, sizeof(*tli)); |
| 437 | uint32_t *ipbuf = CALLOC(1, sizeof(*ipbuf)); |
| 438 | uint8_t binding_id[4]; |
| 439 | |
| 440 | binding_id[0] = port >> 8; |
| 441 | binding_id[1] = port & 0xff; |
| 442 | binding_id[2] = binding_id[3] = 0; |
| 443 | |
Harald Welte | 94a62d5 | 2015-12-19 02:37:48 +0100 | [diff] [blame] | 444 | asn1_u32_to_bitstring(&tli->transportLayerAddress, ipbuf, ip); |
Harald Welte | f8db61b | 2015-12-18 17:29:59 +0100 | [diff] [blame] | 445 | tli->iuTransportAssociation.present = RANAP_IuTransportAssociation_PR_bindingID; |
| 446 | OCTET_STRING_fromBuf(&tli->iuTransportAssociation.choice.bindingID, |
| 447 | (const char *) binding_id, sizeof(binding_id)); |
| 448 | |
| 449 | return tli; |
| 450 | } |
| 451 | |
| 452 | static RANAP_TransportLayerInformation_t *new_transp_info_gtp(uint32_t ip, uint32_t tei) |
| 453 | { |
| 454 | RANAP_TransportLayerInformation_t *tli = CALLOC(1, sizeof(*tli)); |
| 455 | uint32_t *ipbuf = CALLOC(1, sizeof(*ipbuf)); |
Harald Welte | 94a62d5 | 2015-12-19 02:37:48 +0100 | [diff] [blame] | 456 | uint32_t binding_buf = tei; |
Harald Welte | f8db61b | 2015-12-18 17:29:59 +0100 | [diff] [blame] | 457 | |
Harald Welte | 94a62d5 | 2015-12-19 02:37:48 +0100 | [diff] [blame] | 458 | asn1_u32_to_bitstring(&tli->transportLayerAddress, ipbuf, ip); |
Harald Welte | f8db61b | 2015-12-18 17:29:59 +0100 | [diff] [blame] | 459 | tli->iuTransportAssociation.present = RANAP_IuTransportAssociation_PR_gTP_TEI; |
| 460 | OCTET_STRING_fromBuf(&tli->iuTransportAssociation.choice.bindingID, |
| 461 | (const char *) &binding_buf, sizeof(binding_buf)); |
| 462 | |
| 463 | return tli; |
| 464 | } |
| 465 | |
| 466 | static RANAP_UserPlaneInformation_t *new_upi(long mode, uint8_t mode_versions) |
| 467 | { |
| 468 | RANAP_UserPlaneInformation_t *upi = CALLOC(1, sizeof(*upi)); |
| 469 | uint16_t *buf = CALLOC(1, sizeof(*buf)); |
| 470 | |
| 471 | *buf = mode_versions; |
| 472 | |
| 473 | upi->userPlaneMode = mode; |
| 474 | upi->uP_ModeVersions.buf = buf; |
| 475 | upi->uP_ModeVersions.size = sizeof(*buf); |
| 476 | upi->uP_ModeVersions.bits_unused = 0; |
| 477 | |
| 478 | return upi; |
| 479 | } |
| 480 | |
| 481 | |
| 482 | static void assign_new_ra_id(RANAP_RAB_ID_t *id, uint8_t rab_id) |
| 483 | { |
| 484 | uint8_t *buf = CALLOC(1, sizeof(*buf)); |
Harald Welte | 0a3eafe | 2015-12-19 02:38:09 +0100 | [diff] [blame] | 485 | *buf = rab_id; |
Harald Welte | f8db61b | 2015-12-18 17:29:59 +0100 | [diff] [blame] | 486 | |
| 487 | id->buf = buf; |
| 488 | id->size = 1; |
| 489 | id->bits_unused = 0; |
| 490 | } |
| 491 | |
| 492 | /*! \brief generate RANAP RAB ASSIGNMENT REQUEST message for CS (voice) */ |
| 493 | struct msgb *ranap_new_msg_rab_assign_voice(uint8_t rab_id, uint32_t rtp_ip, uint16_t rtp_port) |
| 494 | { |
| 495 | RANAP_ProtocolIE_FieldPair_t *pair; |
| 496 | RANAP_RAB_AssignmentRequestIEs_t ies; |
| 497 | RANAP_RAB_AssignmentRequest_t out; |
| 498 | struct msgb *msg; |
| 499 | int rc; |
| 500 | |
| 501 | memset(&ies, 0, sizeof(ies)); |
| 502 | memset(&out, 0, sizeof(out)); |
| 503 | |
| 504 | /* only assingnment is present, no release */ |
| 505 | ies.presenceMask = RAB_ASSIGNMENTREQUESTIES_RANAP_RAB_SETUPORMODIFYLIST_PRESENT; |
| 506 | |
| 507 | /* put together the 'First' part */ |
| 508 | RANAP_RAB_SetupOrModifyItemFirst_t first; |
| 509 | memset(&first, 0, sizeof(first)); |
| 510 | assign_new_ra_id(&first.rAB_ID, rab_id); |
| 511 | //first.nAS_SynchronisationIndicator = FIXME; |
| 512 | first.rAB_Parameters = new_rab_par_voice(); |
| 513 | first.userPlaneInformation = new_upi(RANAP_UserPlaneMode_support_mode_for_predefined_SDU_sizes, 1); /* 2? */ |
| 514 | first.transportLayerInformation = new_transp_info_rtp(rtp_ip, rtp_port); |
| 515 | |
| 516 | /* put together the 'Second' part */ |
| 517 | RANAP_RAB_SetupOrModifyItemSecond_t second; |
| 518 | memset(&second, 0, sizeof(second)); |
| 519 | |
| 520 | /* Build an IE Pair out of first and second part: |
| 521 | * (first, second) -> pair */ |
| 522 | pair = ranap_new_ie_pair(RANAP_ProtocolIE_ID_id_RAB_SetupOrModifyItem, |
| 523 | RANAP_Criticality_reject, |
| 524 | &asn_DEF_RANAP_RAB_SetupOrModifyItemFirst, &first, |
| 525 | RANAP_Criticality_ignore, |
| 526 | &asn_DEF_RANAP_RAB_SetupOrModifyItemSecond, &second); |
| 527 | |
| 528 | /* the pair has been made, we can release any of its elements */ |
| 529 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_RAB_SetupOrModifyItemFirst, &first); |
| 530 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_RAB_SetupOrModifyItemSecond, &second); |
| 531 | |
Harald Welte | b7f67c4 | 2015-12-19 02:36:52 +0100 | [diff] [blame] | 532 | RANAP_ProtocolIE_ContainerPair_t *container_pair = CALLOC(1, sizeof(*container_pair)); |
Harald Welte | f8db61b | 2015-12-18 17:29:59 +0100 | [diff] [blame] | 533 | /* Add the pair to the list of IEs of the RAB ass.req */ |
Harald Welte | b7f67c4 | 2015-12-19 02:36:52 +0100 | [diff] [blame] | 534 | ASN_SEQUENCE_ADD(container_pair, pair); |
| 535 | ASN_SEQUENCE_ADD(&ies.raB_SetupOrModifyList.list, container_pair); |
Harald Welte | f8db61b | 2015-12-18 17:29:59 +0100 | [diff] [blame] | 536 | |
| 537 | /* encode the IEs into the actual assignment request: |
| 538 | * ies -> out */ |
| 539 | rc = ranap_encode_rab_assignmentrequesties(&out, &ies); |
| 540 | /* 'out' has been generated, we can now release the input */ |
| 541 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_RAB_SetupOrModifyList, |
| 542 | &ies.raB_SetupOrModifyList); |
| 543 | if (rc < 0) |
| 544 | return NULL; |
| 545 | |
| 546 | /* generate an Initiating Mesasage: out -> msg */ |
| 547 | msg = ranap_generate_initiating_message(RANAP_ProcedureCode_id_RAB_Assignment, |
| 548 | RANAP_Criticality_reject, |
| 549 | &asn_DEF_RANAP_RAB_AssignmentRequest, &out); |
| 550 | |
| 551 | /* 'msg' has been generated, we cann now release the input 'out' */ |
| 552 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_RAB_AssignmentRequest, &out); |
| 553 | |
| 554 | return msg; |
| 555 | } |
| 556 | |
| 557 | /*! \brief generate RANAP RAB ASSIGNMENT REQUEST message for PS (data) */ |
| 558 | struct msgb *ranap_new_msg_rab_assign_data(uint8_t rab_id, uint32_t gtp_ip, uint32_t gtp_tei) |
| 559 | { |
| 560 | RANAP_ProtocolIE_FieldPair_t *pair; |
| 561 | RANAP_RAB_AssignmentRequestIEs_t ies; |
| 562 | RANAP_RAB_AssignmentRequest_t out; |
| 563 | RANAP_DataVolumeReportingIndication_t *dat_vol_ind; |
| 564 | struct msgb *msg; |
| 565 | int rc; |
| 566 | |
| 567 | memset(&ies, 0, sizeof(ies)); |
| 568 | memset(&out, 0, sizeof(out)); |
| 569 | |
| 570 | /* only assingnment is present, no release */ |
| 571 | ies.presenceMask = RAB_ASSIGNMENTREQUESTIES_RANAP_RAB_SETUPORMODIFYLIST_PRESENT; |
| 572 | |
| 573 | /* put together the 'First' part */ |
| 574 | RANAP_RAB_SetupOrModifyItemFirst_t first; |
| 575 | memset(&first, 0, sizeof(first)); |
| 576 | assign_new_ra_id(&first.rAB_ID, rab_id); |
| 577 | //first.nAS_SynchronisationIndicator = FIXME; |
| 578 | first.rAB_Parameters = new_rab_par_data(); |
| 579 | first.userPlaneInformation = new_upi(RANAP_UserPlaneMode_transparent_mode, 1); |
| 580 | first.transportLayerInformation = new_transp_info_rtp(gtp_ip, gtp_tei); |
| 581 | |
| 582 | /* put together the 'Second' part */ |
| 583 | RANAP_RAB_SetupOrModifyItemSecond_t second; |
| 584 | memset(&second, 0, sizeof(second)); |
| 585 | second.pDP_TypeInformation = CALLOC(1, sizeof(*second.pDP_TypeInformation)); |
| 586 | ASN_SEQUENCE_ADD(second.pDP_TypeInformation, new_long(RANAP_PDP_Type_ipv4)); |
| 587 | dat_vol_ind = CALLOC(1, sizeof(*dat_vol_ind)); |
| 588 | *dat_vol_ind = RANAP_DataVolumeReportingIndication_do_not_report; |
| 589 | second.dataVolumeReportingIndication = dat_vol_ind; |
| 590 | second.dl_GTP_PDU_SequenceNumber = new_long(0); |
| 591 | second.ul_GTP_PDU_SequenceNumber = new_long(0); |
| 592 | |
| 593 | /* Build an IE Pair out of first and second part: |
| 594 | * (first, second) -> pair */ |
| 595 | pair = ranap_new_ie_pair(RANAP_ProtocolIE_ID_id_RAB_SetupOrModifyItem, |
| 596 | RANAP_Criticality_reject, |
| 597 | &asn_DEF_RANAP_RAB_SetupOrModifyItemFirst, |
| 598 | &first, RANAP_Criticality_ignore, |
| 599 | &asn_DEF_RANAP_RAB_SetupOrModifyItemSecond, |
| 600 | &second); |
| 601 | |
| 602 | /* the pair has been made, we can release any of its elements */ |
| 603 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_RAB_SetupOrModifyItemFirst, &first); |
| 604 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_RAB_SetupOrModifyItemSecond, &second); |
| 605 | |
Harald Welte | b7f67c4 | 2015-12-19 02:36:52 +0100 | [diff] [blame] | 606 | RANAP_ProtocolIE_ContainerPair_t *container_pair = CALLOC(1, sizeof(*container_pair)); |
Harald Welte | f8db61b | 2015-12-18 17:29:59 +0100 | [diff] [blame] | 607 | /* Add the pair to the list of IEs of the RAB ass.req */ |
Harald Welte | b7f67c4 | 2015-12-19 02:36:52 +0100 | [diff] [blame] | 608 | ASN_SEQUENCE_ADD(container_pair, pair); |
| 609 | /* Add the pair to the list of IEs of the RAB ass.req */ |
| 610 | ASN_SEQUENCE_ADD(&ies.raB_SetupOrModifyList.list, container_pair); |
Harald Welte | f8db61b | 2015-12-18 17:29:59 +0100 | [diff] [blame] | 611 | |
| 612 | /* encode the IEs into the actual assignment request: |
| 613 | * ies -> out */ |
| 614 | rc = ranap_encode_rab_assignmentrequesties(&out, &ies); |
| 615 | /* 'out' has been generated, we can now release the input */ |
| 616 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_RAB_SetupOrModifyList, |
| 617 | &ies.raB_SetupOrModifyList); |
| 618 | if (rc < 0) |
| 619 | return NULL; |
| 620 | |
| 621 | /* generate an Initiating Mesasage: out -> msg */ |
| 622 | msg = ranap_generate_initiating_message(RANAP_ProcedureCode_id_RAB_Assignment, |
| 623 | RANAP_Criticality_reject, |
| 624 | &asn_DEF_RANAP_RAB_AssignmentRequest, &out); |
| 625 | |
| 626 | /* 'msg' has been generated, we cann now release the input 'out' */ |
| 627 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_RANAP_RAB_AssignmentRequest, &out); |
| 628 | |
| 629 | return msg; |
| 630 | } |