Holger Hans Peter Freyther | 9d93838 | 2013-07-31 21:59:29 +0200 | [diff] [blame] | 1 | /* (C) 2013 by Holger Hans Peter Freyther |
| 2 | * |
| 3 | * All Rights Reserved |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify |
| 6 | * it under the terms of the GNU Affero General Public License as published by |
| 7 | * the Free Software Foundation; either version 3 of the License, or |
| 8 | * (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | * |
| 15 | * You should have received a copy of the GNU Affero General Public License |
| 16 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 17 | * |
| 18 | */ |
| 19 | |
| 20 | extern "C" { |
| 21 | #include <osmocom/core/msgb.h> |
| 22 | #include <osmocom/core/backtrace.h> |
| 23 | #include <osmocom/gsm/gsm_utils.h> |
| 24 | } |
| 25 | |
| 26 | #include "openbsc_clone.h" |
| 27 | #include "gprs_tests.h" |
| 28 | |
| 29 | #include <gprs_bssgp_pcu.h> |
| 30 | |
| 31 | #include <stdint.h> |
| 32 | #include <string.h> |
| 33 | |
| 34 | static const uint8_t attach[] = { |
| 35 | 0x0e, 0x00, 0x26, |
| 36 | 0x01, 0xc0, 0x01, 0x08, 0x01, 0x02, 0xe5, 0x80, |
| 37 | 0x71, 0x0d, 0x01, 0x05, 0xf4, 0x02, 0x30, 0xef, |
| 38 | 0x0e, 0x09, 0xf1, 0x07, 0x00, 0x01, 0x00, 0x0b, |
| 39 | 0x34, 0xc7, 0x03, 0x2a, 0xa0, 0x42, 0x7c, 0xad, |
| 40 | 0xe1, 0x18, 0x0b, 0xf8, 0xef, 0xfc |
| 41 | }; |
| 42 | |
| 43 | static const uint8_t id_resp_imei[] = { |
| 44 | 0x0e, 0x00, 0x11, |
| 45 | 0x01, 0xc0, 0x05, 0x08, 0x16, 0x08, 0x3a, 0x49, |
| 46 | 0x50, 0x13, 0x28, 0x15, 0x80, 0x01, 0x21, 0x6c, |
| 47 | 0x22 |
| 48 | }; |
| 49 | |
| 50 | static const uint8_t id_resp_imsi[] = { |
| 51 | 0x0e, 0x00, 0x11, |
| 52 | 0x01, 0xc0, 0x09, 0x08, 0x16, 0x08, 0x99, 0x10, |
| 53 | 0x07, 0x00, 0x00, 0x00, 0x03, 0x49, 0xc7, 0x5b, |
| 54 | 0xb6 |
| 55 | }; |
| 56 | |
| 57 | static const uint8_t attach_complete[] = { |
| 58 | 0x0e, 0x00, 0x08, |
| 59 | 0x01, 0xc0, 0x0d, 0x08, 0x03, 0x55, 0x1c, 0xea |
| 60 | }; |
| 61 | |
| 62 | static const uint8_t pdp_context[] = { |
| 63 | 0x0e, 0x00, 0x5a, |
| 64 | 0x01, 0xc0, 0x11, 0x0a, 0x41, 0x05, 0x03, 0x0c, |
| 65 | 0x00, 0x00, 0x1f, 0x10, 0x00, 0x00, 0x00, 0x00, |
| 66 | 0x00, 0x00, 0x00, 0x00, 0x02, 0x01, 0x21, 0x28, |
| 67 | 0x12, 0x08, 0x69, 0x6e, 0x74, 0x65, 0x72, 0x6e, |
| 68 | 0x65, 0x74, 0x05, 0x65, 0x70, 0x6c, 0x75, 0x73, |
| 69 | 0x02, 0x64, 0x65, 0x27, 0x2a, 0x80, 0xc0, 0x23, |
| 70 | 0x13, 0x01, 0x00, 0x00, 0x13, 0x05, 0x65, 0x70, |
| 71 | 0x6c, 0x75, 0x73, 0x08, 0x69, 0x6e, 0x74, 0x65, |
| 72 | 0x72, 0x6e, 0x65, 0x74, 0x80, 0x21, 0x10, 0x01, |
| 73 | 0x00, 0x00, 0x10, 0x81, 0x06, 0x00, 0x00, 0x00, |
| 74 | 0x00, 0x83, 0x06, 0x00, 0x00, 0x00, 0x00, 0xcf, |
| 75 | 0x90, 0xcc |
| 76 | }; |
| 77 | |
| 78 | static const uint8_t qos_profile[] = { 0x0, 0x0, 0x04 }; |
| 79 | static uint32_t tlli = 0xadf11821; |
| 80 | |
| 81 | enum state { |
| 82 | Test_Start, |
| 83 | Test_IdRespIMEI, |
| 84 | Test_IdRespIMSI, |
| 85 | Test_AttachCompl, |
| 86 | Test_PDPAct, |
| 87 | Test_Done, |
| 88 | }; |
| 89 | |
| 90 | static enum state current_state = Test_Start; |
| 91 | |
| 92 | static void extract_tmsi_and_generate_tlli(struct msgb *msg, struct tlv_parsed *tp) |
| 93 | { |
| 94 | uint32_t tmsi; |
Holger Hans Peter Freyther | 9d93838 | 2013-07-31 21:59:29 +0200 | [diff] [blame] | 95 | struct gprs_llc_hdr_parsed hp; |
| 96 | struct tlv_parsed ack_tp; |
Holger Hans Peter Freyther | 9d93838 | 2013-07-31 21:59:29 +0200 | [diff] [blame] | 97 | |
| 98 | gprs_llc_hdr_parse(&hp, TLVP_VAL(tp, BSSGP_IE_LLC_PDU), |
| 99 | TLVP_LEN(tp, BSSGP_IE_LLC_PDU)); |
| 100 | msgb_gmmh(msg) = (unsigned char *) hp.data; |
| 101 | |
| 102 | struct gsm48_hdr *gh = (struct gsm48_hdr *) msgb_gmmh(msg); |
| 103 | |
| 104 | OSMO_ASSERT(gh->msg_type == GSM48_MT_GMM_ATTACH_ACK); |
| 105 | struct gsm48_attach_ack *ack = (struct gsm48_attach_ack *) gh->data; |
Jacob Erlbeck | 1f33294 | 2015-05-04 08:21:17 +0200 | [diff] [blame] | 106 | tlv_parse(&ack_tp, &gsm48_gmm_att_tlvdef, ack->data, |
Holger Hans Peter Freyther | 9d93838 | 2013-07-31 21:59:29 +0200 | [diff] [blame] | 107 | (msg->data + msg->len) - ack->data, 0, 0); |
| 108 | |
| 109 | |
| 110 | OSMO_ASSERT(TLVP_PRESENT(&ack_tp, GSM48_IE_GMM_ALLOC_PTMSI)); |
| 111 | memcpy(&tmsi, TLVP_VAL(&ack_tp, GSM48_IE_GMM_ALLOC_PTMSI) + 1, 4); |
| 112 | tmsi = ntohl(tmsi); |
| 113 | tlli = gprs_tmsi2tlli(tmsi, TLLI_LOCAL); |
| 114 | printf("New TLLI(0x%08x) based on tmsi(0x%x)\n", tlli, tmsi); |
| 115 | } |
| 116 | |
| 117 | void test_pdp_activation_start(struct gprs_bssgp_pcu *pcu) |
| 118 | { |
| 119 | struct msgb *msg = create_msg(attach, ARRAY_SIZE(attach)); |
| 120 | bssgp_tx_ul_ud(pcu->bctx, tlli, qos_profile, msg); |
| 121 | current_state = Test_IdRespIMEI; |
| 122 | } |
| 123 | |
| 124 | |
| 125 | void test_pdp_activation_data(struct gprs_bssgp_pcu *pcu, struct msgb *msg, struct tlv_parsed *tp) |
| 126 | { |
| 127 | const uint8_t *data; |
| 128 | size_t len; |
| 129 | |
| 130 | switch (current_state) { |
| 131 | case Test_IdRespIMEI: |
| 132 | data = id_resp_imei; |
| 133 | len = ARRAY_SIZE(id_resp_imei); |
| 134 | current_state = Test_IdRespIMSI; |
| 135 | break; |
| 136 | case Test_IdRespIMSI: |
| 137 | data = id_resp_imsi; |
| 138 | len = ARRAY_SIZE(id_resp_imsi); |
| 139 | current_state = Test_AttachCompl; |
| 140 | break; |
| 141 | case Test_AttachCompl: |
| 142 | data = attach_complete; |
| 143 | len = ARRAY_SIZE(attach_complete); |
| 144 | extract_tmsi_and_generate_tlli(msg, tp); |
| 145 | current_state = Test_PDPAct; |
| 146 | break; |
| 147 | case Test_PDPAct: |
| 148 | printf("PDP context is active or not...\n"); |
| 149 | return; |
| 150 | break; |
| 151 | case Test_Done: |
| 152 | case Test_Start: /* fall through */ |
| 153 | return; |
| 154 | break; |
| 155 | default: |
| 156 | printf("Unknown state. %d\n", current_state); |
| 157 | return; |
| 158 | break; |
| 159 | }; |
| 160 | |
| 161 | struct msgb *out = create_msg(data, len); |
| 162 | bssgp_tx_ul_ud(pcu->bctx, tlli, qos_profile, out); |
| 163 | |
| 164 | /* send it after the PDP... */ |
| 165 | if (current_state == Test_PDPAct) { |
| 166 | out = create_msg(pdp_context, ARRAY_SIZE(pdp_context)); |
| 167 | bssgp_tx_ul_ud(pcu->bctx, tlli, qos_profile, out); |
| 168 | } |
| 169 | } |