Holger Hans Peter Freyther | 0b8f69d | 2010-06-15 18:45:38 +0800 | [diff] [blame] | 1 | /* |
| 2 | * BSC NAT Message filtering |
| 3 | * |
| 4 | * (C) 2010 by Holger Hans Peter Freyther <zecke@selfish.org> |
Holger Hans Peter Freyther | df6143a | 2010-06-15 18:46:56 +0800 | [diff] [blame] | 5 | * (C) 2010 by On-Waves |
Holger Hans Peter Freyther | 0b8f69d | 2010-06-15 18:45:38 +0800 | [diff] [blame] | 6 | * |
| 7 | * All Rights Reserved |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along |
| 20 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 21 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 22 | * |
| 23 | */ |
| 24 | |
| 25 | |
| 26 | #include <openbsc/debug.h> |
| 27 | #include <openbsc/gsm_data.h> |
| 28 | #include <openbsc/bsc_nat.h> |
| 29 | |
| 30 | #include <stdio.h> |
| 31 | |
| 32 | /* test messages for ipa */ |
| 33 | static u_int8_t ipa_id[] = { |
| 34 | 0x00, 0x01, 0xfe, 0x06, |
| 35 | }; |
| 36 | |
| 37 | /* SCCP messages are below */ |
| 38 | static u_int8_t gsm_reset[] = { |
| 39 | 0x00, 0x12, 0xfd, |
| 40 | 0x09, 0x00, 0x03, 0x05, 0x07, 0x02, 0x42, 0xfe, |
| 41 | 0x02, 0x42, 0xfe, 0x06, 0x00, 0x04, 0x30, 0x04, |
| 42 | 0x01, 0x20, |
| 43 | }; |
| 44 | |
| 45 | static const u_int8_t gsm_reset_ack[] = { |
| 46 | 0x00, 0x13, 0xfd, |
| 47 | 0x09, 0x00, 0x03, 0x07, 0x0b, 0x04, 0x43, 0x01, |
| 48 | 0x00, 0xfe, 0x04, 0x43, 0x5c, 0x00, 0xfe, 0x03, |
| 49 | 0x00, 0x01, 0x31, |
| 50 | }; |
| 51 | |
| 52 | static const u_int8_t gsm_paging[] = { |
| 53 | 0x00, 0x20, 0xfd, |
| 54 | 0x09, 0x00, 0x03, 0x07, 0x0b, 0x04, 0x43, 0x01, |
| 55 | 0x00, 0xfe, 0x04, 0x43, 0x5c, 0x00, 0xfe, 0x10, |
| 56 | 0x00, 0x0e, 0x52, 0x08, 0x08, 0x29, 0x47, 0x10, |
| 57 | 0x02, 0x01, 0x31, 0x97, 0x61, 0x1a, 0x01, 0x06, |
| 58 | }; |
| 59 | |
| 60 | /* BSC -> MSC connection open */ |
| 61 | static const u_int8_t bssmap_cr[] = { |
| 62 | 0x00, 0x2c, 0xfd, |
| 63 | 0x01, 0x01, 0x02, 0x03, 0x02, 0x02, 0x04, 0x02, |
| 64 | 0x42, 0xfe, 0x0f, 0x1f, 0x00, 0x1d, 0x57, 0x05, |
| 65 | 0x08, 0x00, 0x72, 0xf4, 0x80, 0x20, 0x12, 0xc3, |
| 66 | 0x50, 0x17, 0x10, 0x05, 0x24, 0x11, 0x03, 0x33, |
| 67 | 0x19, 0xa2, 0x08, 0x29, 0x47, 0x10, 0x02, 0x01, |
| 68 | 0x31, 0x97, 0x61, 0x00 |
| 69 | }; |
| 70 | |
| 71 | /* MSC -> BSC connection confirm */ |
| 72 | static const u_int8_t bssmap_cc[] = { |
| 73 | 0x00, 0x0a, 0xfd, |
| 74 | 0x02, 0x01, 0x02, 0x03, 0x00, 0x00, 0x03, 0x02, 0x01, 0x00, |
| 75 | }; |
| 76 | |
| 77 | /* MSC -> BSC released */ |
| 78 | static const u_int8_t bssmap_released[] = { |
| 79 | 0x00, 0x0e, 0xfd, |
| 80 | 0x04, 0x00, 0x00, 0x03, 0x01, 0x02, 0x03, 0x00, 0x01, 0x0f, |
| 81 | 0x02, 0x23, 0x42, 0x00, |
| 82 | }; |
| 83 | |
| 84 | /* BSC -> MSC released */ |
| 85 | static const u_int8_t bssmap_release_complete[] = { |
| 86 | 0x00, 0x07, 0xfd, |
| 87 | 0x05, 0x01, 0x02, 0x03, 0x00, 0x00, 0x03 |
| 88 | }; |
| 89 | |
| 90 | struct filter_result { |
| 91 | const u_int8_t *data; |
| 92 | const u_int16_t length; |
Holger Hans Peter Freyther | 1d6fb18 | 2010-01-30 11:53:30 +0100 | [diff] [blame] | 93 | const int dir; |
Holger Hans Peter Freyther | 0b8f69d | 2010-06-15 18:45:38 +0800 | [diff] [blame] | 94 | const int result; |
| 95 | }; |
| 96 | |
| 97 | static const struct filter_result results[] = { |
| 98 | { |
| 99 | .data = ipa_id, |
| 100 | .length = ARRAY_SIZE(ipa_id), |
Holger Hans Peter Freyther | 1d6fb18 | 2010-01-30 11:53:30 +0100 | [diff] [blame] | 101 | .dir = DIR_MSC, |
| 102 | .result = 1, |
Holger Hans Peter Freyther | 0b8f69d | 2010-06-15 18:45:38 +0800 | [diff] [blame] | 103 | }, |
| 104 | { |
| 105 | .data = gsm_reset, |
| 106 | .length = ARRAY_SIZE(gsm_reset), |
Holger Hans Peter Freyther | 1d6fb18 | 2010-01-30 11:53:30 +0100 | [diff] [blame] | 107 | .dir = DIR_MSC, |
| 108 | .result = 1, |
Holger Hans Peter Freyther | 0b8f69d | 2010-06-15 18:45:38 +0800 | [diff] [blame] | 109 | }, |
| 110 | { |
| 111 | .data = gsm_reset_ack, |
| 112 | .length = ARRAY_SIZE(gsm_reset_ack), |
Holger Hans Peter Freyther | 1d6fb18 | 2010-01-30 11:53:30 +0100 | [diff] [blame] | 113 | .dir = DIR_BSC, |
| 114 | .result = 1, |
Holger Hans Peter Freyther | 0b8f69d | 2010-06-15 18:45:38 +0800 | [diff] [blame] | 115 | }, |
| 116 | { |
| 117 | .data = gsm_paging, |
| 118 | .length = ARRAY_SIZE(gsm_paging), |
Holger Hans Peter Freyther | 1d6fb18 | 2010-01-30 11:53:30 +0100 | [diff] [blame] | 119 | .dir = DIR_BSC, |
| 120 | .result = 0, |
Holger Hans Peter Freyther | 0b8f69d | 2010-06-15 18:45:38 +0800 | [diff] [blame] | 121 | }, |
| 122 | { |
| 123 | .data = bssmap_cr, |
| 124 | .length = ARRAY_SIZE(bssmap_cr), |
Holger Hans Peter Freyther | 1d6fb18 | 2010-01-30 11:53:30 +0100 | [diff] [blame] | 125 | .dir = DIR_MSC, |
| 126 | .result = 0, |
Holger Hans Peter Freyther | 0b8f69d | 2010-06-15 18:45:38 +0800 | [diff] [blame] | 127 | }, |
| 128 | { |
| 129 | .data = bssmap_cc, |
| 130 | .length = ARRAY_SIZE(bssmap_cc), |
Holger Hans Peter Freyther | 1d6fb18 | 2010-01-30 11:53:30 +0100 | [diff] [blame] | 131 | .dir = DIR_BSC, |
| 132 | .result = 0, |
Holger Hans Peter Freyther | 0b8f69d | 2010-06-15 18:45:38 +0800 | [diff] [blame] | 133 | }, |
| 134 | { |
| 135 | .data = bssmap_released, |
| 136 | .length = ARRAY_SIZE(bssmap_released), |
Holger Hans Peter Freyther | 1d6fb18 | 2010-01-30 11:53:30 +0100 | [diff] [blame] | 137 | .dir = DIR_MSC, |
| 138 | .result = 0, |
Holger Hans Peter Freyther | 0b8f69d | 2010-06-15 18:45:38 +0800 | [diff] [blame] | 139 | }, |
| 140 | { |
| 141 | .data = bssmap_release_complete, |
| 142 | .length = ARRAY_SIZE(bssmap_release_complete), |
Holger Hans Peter Freyther | 1d6fb18 | 2010-01-30 11:53:30 +0100 | [diff] [blame] | 143 | .dir = DIR_BSC, |
| 144 | .result = 0, |
Holger Hans Peter Freyther | 0b8f69d | 2010-06-15 18:45:38 +0800 | [diff] [blame] | 145 | }, |
| 146 | }; |
| 147 | |
| 148 | int main(int argc, char **argv) |
| 149 | { |
| 150 | int i; |
| 151 | |
| 152 | |
| 153 | /* start testinh with proper messages */ |
| 154 | for (i = 0; i < ARRAY_SIZE(results); ++i) { |
| 155 | int result; |
| 156 | struct bsc_nat_parsed *parsed; |
| 157 | struct msgb *msg = msgb_alloc(4096, "test-message"); |
| 158 | |
| 159 | fprintf(stderr, "Going to test item: %d\n", i); |
| 160 | memcpy(msg->data, results[i].data, results[i].length); |
| 161 | msg->l2h = msgb_put(msg, results[i].length); |
| 162 | |
| 163 | parsed = bsc_nat_parse(msg); |
| 164 | if (!parsed) { |
| 165 | fprintf(stderr, "FAIL: Failed to parse the message\n"); |
| 166 | continue; |
| 167 | } |
| 168 | |
Holger Hans Peter Freyther | 1d6fb18 | 2010-01-30 11:53:30 +0100 | [diff] [blame] | 169 | result = bsc_nat_filter_ipa(results[i].dir, msg, parsed); |
Holger Hans Peter Freyther | 0b8f69d | 2010-06-15 18:45:38 +0800 | [diff] [blame] | 170 | if (result != results[i].result) { |
| 171 | fprintf(stderr, "FAIL: Not the expected result got: %d wanted: %d\n", |
| 172 | result, results[i].result); |
| 173 | } |
| 174 | |
| 175 | msgb_free(msg); |
| 176 | } |
| 177 | |
| 178 | return 0; |
| 179 | } |