Harald Welte | e844bf7 | 2019-05-06 15:25:10 +0200 | [diff] [blame] | 1 | /* common SABP 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 <stdint.h> |
| 22 | |
| 23 | #include <osmocom/core/msgb.h> |
| 24 | |
| 25 | #include <osmocom/sabp/sabp_common.h> |
| 26 | #include <asn1c/asn1helpers.h> |
| 27 | |
| 28 | extern int asn1_xer_print; |
| 29 | int _sabp_DSABP = 0; |
| 30 | #define DSABP _sabp_DSABP |
| 31 | |
| 32 | const struct value_string sabp_presence_vals[] = { |
| 33 | { SABP_SABP_PDU_PR_initiatingMessage, "Initiating" }, |
| 34 | { SABP_SABP_PDU_PR_successfulOutcome, "Successful Outcome" }, |
| 35 | { SABP_SABP_PDU_PR_unsuccessfulOutcome, "Unsuccessful Outcome" }, |
| 36 | { 0, NULL } |
| 37 | }; |
| 38 | |
| 39 | const struct value_string sabp_procedure_code_vals[] = { |
| 40 | { SABP_ProcedureCode_id_Write_Replace, "Write-Replace" }, |
| 41 | { SABP_ProcedureCode_id_Kill, "Kill" }, |
| 42 | { SABP_ProcedureCode_id_Load_Status_Enquiry, "Load-Status-Enquiry" }, |
| 43 | { SABP_ProcedureCode_id_Message_Status_Query, "Message-Status-Query" }, |
| 44 | { SABP_ProcedureCode_id_Restart_Indication, "Restart-Indication" }, |
| 45 | { SABP_ProcedureCode_id_Reset, "Reset" }, |
| 46 | { SABP_ProcedureCode_id_Failure_Indication, "Failure-Indication" }, |
| 47 | { SABP_ProcedureCode_id_Error_Indication, "Error-Indication" }, |
| 48 | { 0, NULL } |
| 49 | }; |
| 50 | |
| 51 | const struct value_string sabp_cause_vals[] = { |
| 52 | { SABP_Cause_parameter_not_recognised, "Parameter not recognized" }, |
| 53 | { SABP_Cause_parameter_value_invalid, "Parameter value invalid" }, |
| 54 | { SABP_Cause_valid_CN_message_not_identified, "Valid CN message not identified" }, |
| 55 | { SABP_Cause_service_area_identity_not_valid, "Service Area Identity not valid" }, |
| 56 | { SABP_Cause_unrecognised_message, "Unrecognised message" }, |
| 57 | { SABP_Cause_missing_mandatory_element, "Missing mandatory element" }, |
| 58 | { SABP_Cause_rNC_capacity_exceeded, "RNC capacity exceeded" }, |
| 59 | { SABP_Cause_rNC_memory_exceeded, "RNC memory exceeded" }, |
| 60 | { SABP_Cause_service_area_broadcast_not_supported, "Service Area Broadcast not supported" }, |
| 61 | { SABP_Cause_service_area_broadcast_not_operational, "Service Area Broadcast not operational" }, |
| 62 | { SABP_Cause_message_reference_already_used, "Message Reference already used" }, |
| 63 | { SABP_Cause_unspecifed_error, "Unspecified Error" }, |
| 64 | { SABP_Cause_transfer_syntax_error, "Transfer Syntax Error" }, |
| 65 | { SABP_Cause_semantic_error, "Semantic Error" }, |
| 66 | { SABP_Cause_message_not_compatible_with_receiver_state, |
| 67 | "Message not compatible with receiver state" }, |
| 68 | { SABP_Cause_abstract_syntax_error_reject, "Abstract Syntax Error - Reject" }, |
| 69 | { SABP_Cause_abstract_syntax_error_ignore_and_notify, |
| 70 | "Abstract Syntax Error - Ignore and Notify" }, |
| 71 | { SABP_Cause_abstract_syntax_error_falsely_constructed_message, |
| 72 | "Abstract Syntax Error - Falsely constructed message" }, |
| 73 | { 0, NULL } |
| 74 | }; |
| 75 | |
| 76 | static struct msgb *sabp_msgb_alloc(void) |
| 77 | { |
| 78 | return msgb_alloc_headroom(1024+512, 512, "SABP Tx"); |
| 79 | } |
| 80 | |
| 81 | static struct msgb *_sabp_gen_msg(SABP_SABP_PDU_t *pdu) |
| 82 | { |
| 83 | struct msgb *msg = sabp_msgb_alloc(); |
| 84 | asn_enc_rval_t rval; |
| 85 | |
| 86 | if (!msg) |
| 87 | return NULL; |
| 88 | |
| 89 | rval = aper_encode_to_buffer(&asn_DEF_SABP_SABP_PDU, pdu, |
| 90 | msg->data, msgb_tailroom(msg)); |
| 91 | if (rval.encoded < 0) { |
| 92 | LOGP(DSABP, LOGL_ERROR, "Error encoding type: %s\n", |
| 93 | rval.failed_type->name); |
| 94 | |
| 95 | } |
| 96 | |
| 97 | msgb_put(msg, rval.encoded/8); |
| 98 | |
| 99 | return msg; |
| 100 | } |
| 101 | |
| 102 | struct msgb *sabp_generate_initiating_message(e_SABP_ProcedureCode procedureCode, |
| 103 | SABP_Criticality_t criticality, |
| 104 | asn_TYPE_descriptor_t *td, void *sptr) |
| 105 | { |
| 106 | SABP_SABP_PDU_t pdu; |
| 107 | struct msgb *msg; |
| 108 | int rc; |
| 109 | |
| 110 | memset(&pdu, 0, sizeof(pdu)); |
| 111 | |
| 112 | pdu.present = SABP_SABP_PDU_PR_initiatingMessage; |
| 113 | pdu.choice.initiatingMessage.procedureCode = procedureCode; |
| 114 | pdu.choice.initiatingMessage.criticality = criticality; |
| 115 | rc = ANY_fromType_aper(&pdu.choice.initiatingMessage.value, td, sptr); |
| 116 | if (rc < 0) { |
Harald Welte | 4f18ce1 | 2020-07-29 20:11:36 +0200 | [diff] [blame] | 117 | LOGP(DSABP, LOGL_ERROR, "Error in ANY_fromType_aper (%s)\n", td->name); |
Harald Welte | e844bf7 | 2019-05-06 15:25:10 +0200 | [diff] [blame] | 118 | return NULL; |
| 119 | } |
| 120 | |
| 121 | msg = _sabp_gen_msg(&pdu); |
| 122 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_SABP_SABP_PDU, &pdu); |
| 123 | |
| 124 | return msg; |
| 125 | } |
| 126 | |
| 127 | struct msgb *sabp_generate_successful_outcome( |
| 128 | e_SABP_ProcedureCode procedureCode, |
| 129 | SABP_Criticality_t criticality, |
| 130 | asn_TYPE_descriptor_t * td, |
| 131 | void *sptr) |
| 132 | { |
| 133 | SABP_SABP_PDU_t pdu; |
| 134 | struct msgb *msg; |
| 135 | int rc; |
| 136 | |
| 137 | memset(&pdu, 0, sizeof(pdu)); |
| 138 | |
| 139 | pdu.present = SABP_SABP_PDU_PR_successfulOutcome; |
| 140 | pdu.choice.successfulOutcome.procedureCode = procedureCode; |
| 141 | pdu.choice.successfulOutcome.criticality = criticality; |
| 142 | rc = ANY_fromType_aper(&pdu.choice.successfulOutcome.value, td, sptr); |
| 143 | if (rc < 0) { |
Harald Welte | 4f18ce1 | 2020-07-29 20:11:36 +0200 | [diff] [blame] | 144 | LOGP(DSABP, LOGL_ERROR, "Error in ANY_fromType_aper (%s)\n", td->name); |
Harald Welte | e844bf7 | 2019-05-06 15:25:10 +0200 | [diff] [blame] | 145 | return NULL; |
| 146 | } |
| 147 | |
| 148 | msg = _sabp_gen_msg(&pdu); |
| 149 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_SABP_SABP_PDU, &pdu); |
| 150 | |
| 151 | return msg; |
| 152 | } |
| 153 | |
| 154 | struct msgb *sabp_generate_unsuccessful_outcome( |
| 155 | e_SABP_ProcedureCode procedureCode, |
| 156 | SABP_Criticality_t criticality, |
| 157 | asn_TYPE_descriptor_t * td, |
| 158 | void *sptr) |
| 159 | { |
| 160 | SABP_SABP_PDU_t pdu; |
| 161 | struct msgb *msg; |
| 162 | int rc; |
| 163 | |
| 164 | memset(&pdu, 0, sizeof(pdu)); |
| 165 | |
| 166 | pdu.present = SABP_SABP_PDU_PR_unsuccessfulOutcome; |
| 167 | pdu.choice.unsuccessfulOutcome.procedureCode = procedureCode; |
| 168 | pdu.choice.unsuccessfulOutcome.criticality = criticality; |
| 169 | rc = ANY_fromType_aper(&pdu.choice.unsuccessfulOutcome.value, td, sptr); |
| 170 | if (rc < 0) { |
Harald Welte | 4f18ce1 | 2020-07-29 20:11:36 +0200 | [diff] [blame] | 171 | LOGP(DSABP, LOGL_ERROR, "Error in ANY_fromType_aper (%s)\n", td->name); |
Harald Welte | e844bf7 | 2019-05-06 15:25:10 +0200 | [diff] [blame] | 172 | return NULL; |
| 173 | } |
| 174 | |
| 175 | msg = _sabp_gen_msg(&pdu); |
| 176 | ASN_STRUCT_FREE_CONTENTS_ONLY(asn_DEF_SABP_SABP_PDU, &pdu); |
| 177 | |
| 178 | return msg; |
| 179 | } |
| 180 | |
| 181 | SABP_IE_t *sabp_new_ie(SABP_ProtocolIE_ID_t id, |
| 182 | SABP_Criticality_t criticality, |
| 183 | asn_TYPE_descriptor_t * type, void *sptr) |
| 184 | { |
| 185 | SABP_IE_t *buff; |
| 186 | int rc; |
| 187 | |
| 188 | if ((buff = CALLOC(1, sizeof(*buff))) == NULL) { |
| 189 | // Possible error on malloc |
| 190 | return NULL; |
| 191 | } |
| 192 | |
| 193 | buff->id = id; |
| 194 | buff->criticality = criticality; |
| 195 | |
| 196 | rc = ANY_fromType_aper(&buff->value, type, sptr); |
| 197 | if (rc < 0) { |
Harald Welte | 4f18ce1 | 2020-07-29 20:11:36 +0200 | [diff] [blame] | 198 | LOGP(DSABP, LOGL_ERROR, "Error in ANY_fromType_aper (%s)\n", type->name); |
Harald Welte | e844bf7 | 2019-05-06 15:25:10 +0200 | [diff] [blame] | 199 | FREEMEM(buff); |
| 200 | return NULL; |
| 201 | } |
| 202 | |
| 203 | if (asn1_xer_print) |
| 204 | if (xer_fprint(stdout, &asn_DEF_SABP_IE, buff) < 0) { |
| 205 | FREEMEM(buff); |
| 206 | return NULL; |
| 207 | } |
| 208 | |
| 209 | return buff; |
| 210 | } |
| 211 | |
| 212 | void sabp_set_log_area(int log_area) |
| 213 | { |
| 214 | _sabp_DSABP = log_area; |
| 215 | } |