Harald Welte | 34b5a95 | 2019-05-27 11:54:11 +0200 | [diff] [blame] | 1 | /* Common L3 helper functions in TTCN-3 |
| 2 | * (C) 2018 Harald Welte <laforge@gnumonks.org> |
| 3 | * contributions by sysmocom - s.f.m.c. GmbH |
| 4 | * All rights reserved. |
| 5 | * |
| 6 | * Released under the terms of GNU General Public License, Version 2 or |
| 7 | * (at your option) any later version. |
| 8 | * |
| 9 | * SPDX-License-Identifier: GPL-2.0-or-later |
| 10 | */ |
| 11 | |
Harald Welte | 158a7ca | 2018-02-16 18:11:31 +0100 | [diff] [blame] | 12 | module L3_Common { |
| 13 | |
| 14 | import from Osmocom_Types all; |
| 15 | import from General_Types all; |
Harald Welte | 5a4fa04 | 2018-02-16 20:59:21 +0100 | [diff] [blame] | 16 | import from MobileL3_GMM_SM_Types all; |
Harald Welte | 158a7ca | 2018-02-16 18:11:31 +0100 | [diff] [blame] | 17 | |
| 18 | type record AuthVector { |
| 19 | OCT16 rand, |
| 20 | OCT4 sres, |
Neels Hofmeyr | 0ecb2e3 | 2018-04-30 15:13:55 +0200 | [diff] [blame] | 21 | OCT8 kc, |
| 22 | OCT16 ik, |
| 23 | OCT16 ck, |
| 24 | OCT16 autn, |
Alexander Couzens | 387f7f3 | 2018-09-04 18:10:59 +0200 | [diff] [blame] | 25 | OCT8 res, |
| 26 | /* auts is usally calculated from autn + rand on the MS. |
| 27 | * To simplify the test case, auts is generated instead calculated here. |
| 28 | */ |
| 29 | OCT14 auts |
Harald Welte | 158a7ca | 2018-02-16 18:11:31 +0100 | [diff] [blame] | 30 | } |
| 31 | |
| 32 | private function f_rnd_oct(integer len) return octetstring { |
| 33 | var integer i; |
| 34 | var octetstring res; |
| 35 | for (i := 0; i < len; i := i + 1) { |
| 36 | res[i] := int2oct(float2int(rnd()*256.0), 1); |
| 37 | } |
| 38 | return res; |
| 39 | } |
| 40 | |
| 41 | function f_gen_auth_vec_2g() return AuthVector { |
| 42 | var AuthVector vec; |
| 43 | vec.rand := f_rnd_oct(16); |
| 44 | vec.sres := f_rnd_oct(4); |
| 45 | vec.kc := f_rnd_oct(8); |
| 46 | return vec; |
| 47 | } |
| 48 | |
Neels Hofmeyr | 0ecb2e3 | 2018-04-30 15:13:55 +0200 | [diff] [blame] | 49 | function f_gen_auth_vec_3g() return AuthVector { |
| 50 | var AuthVector vec := f_gen_auth_vec_2g(); |
| 51 | vec.ik := f_rnd_oct(16); |
| 52 | vec.ck := f_rnd_oct(16); |
| 53 | vec.autn := f_rnd_oct(16); |
| 54 | vec.res := f_rnd_oct(8); |
Alexander Couzens | 387f7f3 | 2018-09-04 18:10:59 +0200 | [diff] [blame] | 55 | vec.auts := f_rnd_oct(14); |
Neels Hofmeyr | 0ecb2e3 | 2018-04-30 15:13:55 +0200 | [diff] [blame] | 56 | return vec; |
| 57 | } |
| 58 | |
Harald Welte | 14a0f94 | 2018-02-16 20:42:23 +0100 | [diff] [blame] | 59 | /* 3GPP TS 23.003 2.6 */ |
| 60 | type enumerated TlliType { |
| 61 | TLLI_LOCAL, |
| 62 | TLLI_FOREIGN, |
| 63 | TLLI_RANDOM, |
| 64 | TLLI_AUXILIARY, |
| 65 | TLLI_RESERVED, |
| 66 | TLLI_G_RNTI, |
| 67 | TLLI_RAND_G_RNTI |
| 68 | } |
| 69 | |
| 70 | /* 3GPP TS 23.003 2.6 */ |
| 71 | function f_gprs_tlli_type(OCT4 tlli) return TlliType { |
| 72 | var bitstring tllib := oct2bit(tlli); |
| 73 | if (substr(tllib, 0, 2) == '11'B) { |
| 74 | return TLLI_LOCAL; |
| 75 | } else if (substr(tllib, 0, 2) == '10'B) { |
| 76 | return TLLI_FOREIGN; |
| 77 | } else if (substr(tllib, 0, 5) == '01111'B) { |
| 78 | return TLLI_RANDOM; |
| 79 | } else if (substr(tllib, 0, 4) == '0110'B) { |
| 80 | return TLLI_RESERVED; |
| 81 | } else if (substr(tllib, 0, 3) == '010'B) { |
| 82 | return TLLI_RESERVED; |
| 83 | } else if (substr(tllib, 0, 4) == '0000'B) { |
| 84 | return TLLI_G_RNTI; |
| 85 | } else if (substr(tllib, 0, 4) == '0001'B) { |
| 86 | return TLLI_RAND_G_RNTI; |
| 87 | } else { |
| 88 | setverdict(fail, "Unknonw TLLI Type ", tllib); |
Daniel Willmann | e4ff537 | 2018-07-05 17:35:03 +0200 | [diff] [blame] | 89 | mtc.stop; |
Harald Welte | 14a0f94 | 2018-02-16 20:42:23 +0100 | [diff] [blame] | 90 | } |
| 91 | } |
| 92 | |
| 93 | function f_gprs_tlli_random() return OCT4 { |
| 94 | var OCT4 tlli := f_rnd_octstring(4); |
| 95 | return tlli or4b 'c0000000'O; |
| 96 | } |
| 97 | |
Harald Welte | 5a4fa04 | 2018-02-16 20:59:21 +0100 | [diff] [blame] | 98 | function f_RAI(HEX0_3n mcc, HEX0_3n mnc, OCT2 lac, OCT1 rac) return RoutingAreaIdentificationV { |
| 99 | if (lengthof(mnc) == 2) { |
| 100 | mnc := mnc & 'F'H; |
| 101 | } |
| 102 | var RoutingAreaIdentificationV ret := { |
| 103 | mccDigit1 := mcc[0], |
| 104 | mccDigit2 := mcc[1], |
| 105 | mccDigit3 := mcc[2], |
| 106 | mncDigit3 := mnc[2], |
| 107 | mncDigit1 := mnc[0], |
| 108 | mncDigit2 := mnc[1], |
| 109 | lac := lac, |
| 110 | rac := rac |
| 111 | } |
| 112 | return ret; |
| 113 | } |
Harald Welte | 158a7ca | 2018-02-16 18:11:31 +0100 | [diff] [blame] | 114 | |
Neels Hofmeyr | 8df7d15 | 2018-03-14 19:03:28 +0100 | [diff] [blame] | 115 | function f_RAI_to_plmn_hexstr(RoutingAreaIdentificationV rai) return hexstring { |
| 116 | var hexstring plmn := |
| 117 | rai.mccDigit1 |
| 118 | & rai.mccDigit2 |
| 119 | & rai.mccDigit3 |
Alexander Couzens | c7dddbd | 2019-04-11 19:18:35 +0200 | [diff] [blame] | 120 | & rai.mncDigit3 |
Neels Hofmeyr | 8df7d15 | 2018-03-14 19:03:28 +0100 | [diff] [blame] | 121 | & rai.mncDigit1 |
Alexander Couzens | c7dddbd | 2019-04-11 19:18:35 +0200 | [diff] [blame] | 122 | & rai.mncDigit2; |
Neels Hofmeyr | 8df7d15 | 2018-03-14 19:03:28 +0100 | [diff] [blame] | 123 | return plmn; |
| 124 | } |
Harald Welte | 158a7ca | 2018-02-16 18:11:31 +0100 | [diff] [blame] | 125 | |
| 126 | } |