Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 1 | #include <osmocom/core/msgb.h> |
Harald Welte | b3dae30 | 2015-08-30 12:20:09 +0200 | [diff] [blame] | 2 | #include <osmocom/core/utils.h> |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 3 | |
Harald Welte | b3dae30 | 2015-08-30 12:20:09 +0200 | [diff] [blame] | 4 | #include <unistd.h> |
Harald Welte | ee77cff | 2015-08-30 16:57:53 +0200 | [diff] [blame] | 5 | #include <errno.h> |
Harald Welte | b3dae30 | 2015-08-30 12:20:09 +0200 | [diff] [blame] | 6 | #include <string.h> |
| 7 | |
Harald Welte | 30afef3 | 2015-08-30 12:28:29 +0200 | [diff] [blame] | 8 | #include "asn1helpers.h" |
| 9 | |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 10 | #include "hnbgw.h" |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 11 | #include "hnbap_common.h" |
| 12 | #include "hnbap_ies_defs.h" |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 13 | |
Harald Welte | ee77cff | 2015-08-30 16:57:53 +0200 | [diff] [blame] | 14 | #define IU_MSG_NUM_IES 32 |
| 15 | #define IU_MSG_NUM_EXT_IES 32 |
| 16 | |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 17 | static int hnbgw_hnbap_tx(struct hnb_context *ctx, struct msgb *msg) |
Harald Welte | ee77cff | 2015-08-30 16:57:53 +0200 | [diff] [blame] | 18 | { |
Harald Welte | 3f71256 | 2015-09-07 21:53:25 +0200 | [diff] [blame^] | 19 | msgb_ppid(msg) = IUH_PPI_HNBAP; |
| 20 | return osmo_wqueue_enqueue(&ctx->wqueue, msg); |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 21 | } |
Harald Welte | ee77cff | 2015-08-30 16:57:53 +0200 | [diff] [blame] | 22 | |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 23 | static int hnbgw_tx_hnb_register_acc(struct hnb_context *ctx) |
| 24 | { |
| 25 | HNBRegisterAccept_t accept_out; |
| 26 | struct msgb *msg; |
| 27 | int rc; |
| 28 | |
| 29 | /* Single required response IE: RNC-ID */ |
| 30 | HNBRegisterAcceptIEs_t accept = { |
| 31 | .rnc_id = ctx->gw->config.rnc_id |
| 32 | }; |
| 33 | |
| 34 | /* encode the Information Elements */ |
Harald Welte | 2204f9d | 2015-09-07 21:10:50 +0200 | [diff] [blame] | 35 | memset(&accept_out, 0, sizeof(accept_out)); |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 36 | rc = hnbap_encode_hnbregisteraccepties(&accept_out, &accept); |
| 37 | if (rc < 0) { |
| 38 | return rc; |
Harald Welte | ee77cff | 2015-08-30 16:57:53 +0200 | [diff] [blame] | 39 | } |
| 40 | |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 41 | /* generate a successfull outcome PDU */ |
| 42 | msg = hnbap_generate_successful_outcome(ProcedureCode_id_HNBRegister, |
| 43 | Criticality_reject, |
| 44 | &asn_DEF_HNBRegisterAccept, |
| 45 | &accept_out); |
Harald Welte | ee77cff | 2015-08-30 16:57:53 +0200 | [diff] [blame] | 46 | |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 47 | return hnbgw_hnbap_tx(ctx, msg); |
Harald Welte | ee77cff | 2015-08-30 16:57:53 +0200 | [diff] [blame] | 48 | } |
| 49 | |
| 50 | |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 51 | static int hnbgw_tx_ue_register_acc(struct ue_context *ue) |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 52 | { |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 53 | UERegisterAccept_t accept_out; |
| 54 | UERegisterAcceptIEs_t accept; |
| 55 | struct msgb *msg; |
| 56 | int rc; |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 57 | |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 58 | /* FIXME accept.uE_Identity; */ |
Harald Welte | 2204f9d | 2015-09-07 21:10:50 +0200 | [diff] [blame] | 59 | memset(&accept, 0, sizeof(accept)); |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 60 | asn1_u32_to_bitstring(&accept.context_ID, &ue->context_id); |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 61 | |
Harald Welte | 2204f9d | 2015-09-07 21:10:50 +0200 | [diff] [blame] | 62 | memset(&accept_out, 0, sizeof(accept_out)); |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 63 | rc = hnbap_encode_ueregisteraccepties(&accept_out, &accept); |
| 64 | if (rc < 0) { |
| 65 | return rc; |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 66 | } |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 67 | |
| 68 | msg = hnbap_generate_successful_outcome(ProcedureCode_id_UERegister, |
| 69 | Criticality_reject, |
| 70 | &asn_DEF_UERegisterAccept, |
| 71 | &accept_out); |
| 72 | return hnbgw_hnbap_tx(ue->hnb, msg); |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 73 | } |
| 74 | |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 75 | static int hnbgw_rx_hnb_register_req(struct hnb_context *ctx, ANY_t *in) |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 76 | { |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 77 | HNBRegisterRequestIEs_t ies; |
| 78 | int rc; |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 79 | |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 80 | rc = hnbap_decode_hnbregisterrequesties(&ies, in); |
| 81 | if (rc < 0) |
| 82 | return rc; |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 83 | |
Harald Welte | a2e6a7a | 2015-08-29 21:47:39 +0200 | [diff] [blame] | 84 | /* copy all identity parameters from the message to ctx */ |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 85 | asn1_strncpy(ctx->identity_info, &ies.hnB_Identity.hNB_Identity_Info, |
| 86 | sizeof(ctx->identity_info)); |
| 87 | ctx->id.lac = asn1str_to_u16(&ies.lac); |
| 88 | ctx->id.sac = asn1str_to_u16(&ies.sac); |
| 89 | ctx->id.rac = asn1str_to_u8(&ies.rac); |
| 90 | ctx->id.cid = asn1bitstr_to_u32(&ies.cellIdentity); |
Harald Welte | b3dae30 | 2015-08-30 12:20:09 +0200 | [diff] [blame] | 91 | //ctx->id.mcc FIXME |
| 92 | //ctx->id.mnc FIXME |
Harald Welte | a2e6a7a | 2015-08-29 21:47:39 +0200 | [diff] [blame] | 93 | |
Harald Welte | ee77cff | 2015-08-30 16:57:53 +0200 | [diff] [blame] | 94 | DEBUGP(DMAIN, "HNB-REGISTER-REQ from %s\n", ctx->identity_info); |
| 95 | |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 96 | /* Send HNBRegisterAccept */ |
| 97 | return hnbgw_tx_hnb_register_acc(ctx); |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 98 | } |
| 99 | |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 100 | static int hnbgw_rx_ue_register_req(struct hnb_context *ctx, ANY_t *in) |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 101 | { |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 102 | UERegisterRequestIEs_t ies; |
| 103 | struct ue_context *ue; |
| 104 | int rc; |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 105 | |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 106 | rc = hnbap_decode_ueregisterrequesties(&ies, in); |
| 107 | if (rc < 0) |
| 108 | return rc; |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 109 | |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 110 | DEBUGP(DMAIN, "UE-REGSITER-REQ ID_type=%d cause=%ld\n", |
| 111 | ies.uE_Identity.present, ies.registration_Cause); |
| 112 | |
| 113 | /* FIXME: convert UE identity into a more palatable format */ |
| 114 | |
| 115 | /* Send UERegisterAccept */ |
| 116 | return hnbgw_tx_ue_register_acc(ue); |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 117 | } |
| 118 | |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 119 | static int hnbgw_rx_initiating_msg(struct hnb_context *hnb, InitiatingMessage_t *imsg) |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 120 | { |
| 121 | int rc; |
| 122 | |
Harald Welte | b3dae30 | 2015-08-30 12:20:09 +0200 | [diff] [blame] | 123 | switch (imsg->procedureCode) { |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 124 | case ProcedureCode_id_HNBRegister: /* 8.2 */ |
| 125 | rc = hnbgw_rx_hnb_register_req(hnb, &imsg->value); |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 126 | break; |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 127 | case ProcedureCode_id_HNBDe_Register: /* 8.3 */ |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 128 | break; |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 129 | case ProcedureCode_id_UERegister: /* 8.4 */ |
| 130 | rc = hnbgw_rx_ue_register_req(hnb, &imsg->value); |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 131 | break; |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 132 | case ProcedureCode_id_UEDe_Register: /* 8.5 */ |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 133 | break; |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 134 | case ProcedureCode_id_ErrorIndication: /* 8.6 */ |
| 135 | case ProcedureCode_id_TNLUpdate: /* 8.9 */ |
| 136 | case ProcedureCode_id_HNBConfigTransfer: /* 8.10 */ |
| 137 | case ProcedureCode_id_RelocationComplete: /* 8.11 */ |
| 138 | case ProcedureCode_id_U_RNTIQuery: /* 8.12 */ |
| 139 | case ProcedureCode_id_privateMessage: |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 140 | break; |
| 141 | default: |
| 142 | break; |
| 143 | } |
| 144 | } |
| 145 | |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 146 | static int hnbgw_rx_successful_outcome_msg(struct hnb_context *hnb, SuccessfulOutcome_t *msg) |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 147 | { |
| 148 | |
| 149 | } |
| 150 | |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 151 | static int hnbgw_rx_unsuccessful_outcome_msg(struct hnb_context *hnb, UnsuccessfulOutcome_t *msg) |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 152 | { |
| 153 | |
| 154 | } |
| 155 | |
| 156 | |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 157 | static int _hnbgw_hnbap_rx(struct hnb_context *hnb, HNBAP_PDU_t *pdu) |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 158 | { |
Harald Welte | b3dae30 | 2015-08-30 12:20:09 +0200 | [diff] [blame] | 159 | int rc; |
| 160 | |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 161 | /* it's a bit odd that we can't dispatch on procedure code, but |
| 162 | * that's not possible */ |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 163 | switch (pdu->present) { |
| 164 | case HNBAP_PDU_PR_initiatingMessage: |
| 165 | rc = hnbgw_rx_initiating_msg(hnb, &pdu->choice.initiatingMessage); |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 166 | break; |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 167 | case HNBAP_PDU_PR_successfulOutcome: |
| 168 | rc = hnbgw_rx_successful_outcome_msg(hnb, &pdu->choice.successfulOutcome); |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 169 | break; |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 170 | case HNBAP_PDU_PR_unsuccessfulOutcome: |
| 171 | rc = hnbgw_rx_unsuccessful_outcome_msg(hnb, &pdu->choice.unsuccessfulOutcome); |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 172 | break; |
| 173 | default: |
| 174 | return -1; |
| 175 | } |
| 176 | } |
| 177 | |
Harald Welte | a2e6a7a | 2015-08-29 21:47:39 +0200 | [diff] [blame] | 178 | int hnbgw_hnbap_rx(struct hnb_context *hnb, struct msgb *msg) |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 179 | { |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 180 | HNBAP_PDU_t _pdu, *pdu = &_pdu; |
| 181 | asn_dec_rval_t dec_ret; |
Harald Welte | ee77cff | 2015-08-30 16:57:53 +0200 | [diff] [blame] | 182 | int rc; |
| 183 | |
| 184 | /* decode and handle to _hnbgw_hnbap_rx() */ |
| 185 | |
Harald Welte | 2204f9d | 2015-09-07 21:10:50 +0200 | [diff] [blame] | 186 | memset(pdu, 0, sizeof(*pdu)); |
Harald Welte | 27f9c4a | 2015-08-30 22:47:18 +0200 | [diff] [blame] | 187 | dec_ret = aper_decode(NULL, &asn_DEF_HNBAP_PDU, (void **) &pdu, |
| 188 | msg->data, msgb_length(msg), 0, 0); |
| 189 | if (dec_ret.code != RC_OK) { |
| 190 | LOGP(DMAIN, LOGL_ERROR, "Error in ASN.1 decode\n"); |
Harald Welte | ee77cff | 2015-08-30 16:57:53 +0200 | [diff] [blame] | 191 | return rc; |
| 192 | } |
| 193 | |
| 194 | rc = _hnbgw_hnbap_rx(hnb, pdu); |
Harald Welte | ee77cff | 2015-08-30 16:57:53 +0200 | [diff] [blame] | 195 | |
| 196 | return rc; |
Harald Welte | ba43de4 | 2015-08-29 20:33:16 +0200 | [diff] [blame] | 197 | } |
| 198 | |
| 199 | |
| 200 | int hnbgw_hnbap_init(void) |
| 201 | { |
| 202 | |
| 203 | } |