Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1 | /* csn1.cpp |
| 2 | * Routines for CSN1 dissection in wireshark. |
| 3 | * |
| 4 | * Copyright (C) 2011 Ivan Klyuchnikov |
| 5 | * |
| 6 | * By Vincent Helfre, based on original code by Jari Sassi |
| 7 | * with the gracious authorization of STE |
| 8 | * Copyright (c) 2011 ST-Ericsson |
| 9 | * |
| 10 | * $Id: packet-csn1.c 39140 2011-09-25 22:01:50Z wmeier $ |
| 11 | * |
| 12 | * Wireshark - Network traffic analyzer |
| 13 | * By Gerald Combs <gerald@wireshark.org> |
| 14 | * Copyright 1998 Gerald Combs |
| 15 | * |
| 16 | * This program is free software; you can redistribute it and/or |
| 17 | * modify it under the terms of the GNU General Public License |
| 18 | * as published by the Free Software Foundation; either version 2 |
| 19 | * of the License, or (at your option) any later version. |
| 20 | * |
| 21 | * This program is distributed in the hope that it will be useful, |
| 22 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 23 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 24 | * GNU General Public License for more details. |
| 25 | * |
| 26 | * You should have received a copy of the GNU General Public License |
| 27 | * along with this program; if not, write to the Free Software |
| 28 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 29 | */ |
| 30 | |
Ivan Kluchnikov | 835f91e | 2012-04-30 18:00:36 +0400 | [diff] [blame] | 31 | #include <assert.h> |
| 32 | #include <string.h> |
Holger Hans Peter Freyther | cf0265a | 2013-07-28 15:57:20 +0200 | [diff] [blame] | 33 | #define __STDC_FORMAT_MACROS |
| 34 | #include <inttypes.h> |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 35 | #include "csn1.h" |
Ivan Kluchnikov | a9f1ff2 | 2012-05-24 22:25:06 +0400 | [diff] [blame] | 36 | #include <gprs_debug.h> |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 37 | |
Pau Espin Pedrol | d636f74 | 2020-02-03 15:37:08 +0100 | [diff] [blame] | 38 | #include <osmocom/core/logging.h> |
| 39 | #include <osmocom/core/utils.h> |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 40 | |
| 41 | #define pvDATA(_pv, _offset) ((void*) ((unsigned char*)_pv + _offset)) |
| 42 | #define pui8DATA(_pv, _offset) ((guint8*) pvDATA(_pv, _offset)) |
| 43 | #define pui16DATA(_pv, _offset) ((guint16*) pvDATA(_pv, _offset)) |
| 44 | #define pui32DATA(_pv, _offset) ((guint32*) pvDATA(_pv, _offset)) |
| 45 | #define pui64DATA(_pv, _offset) ((guint64*) pvDATA(_pv, _offset)) |
| 46 | /* used to tag existence of next element in variable length lists */ |
| 47 | #define STANDARD_TAG 1 |
| 48 | #define REVERSED_TAG 0 |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 49 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 50 | static const unsigned char ixBitsTab[] = {0, 1, 1, 2, 2, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 5}; |
| 51 | |
| 52 | |
| 53 | /* Returns no_of_bits (up to 8) masked with 0x2B */ |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 54 | static guint8 |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 55 | get_masked_bits8(struct bitvec *vector, unsigned *readIndex, gint bit_offset, const gint no_of_bits) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 56 | { |
| 57 | static const guint8 maskBits[] = {0x00, 0x01, 0x03, 0x07, 0x0F, 0x1F, 0x3F, 0x7F, 0xFF}; |
| 58 | //gint byte_offset = bit_offset >> 3; /* divide by 8 */ |
| 59 | gint relative_bit_offset = bit_offset & 0x07; /* modulo 8 */ |
| 60 | guint8 result; |
| 61 | gint bit_shift = 8 - relative_bit_offset - (gint) no_of_bits; |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 62 | *readIndex -= relative_bit_offset; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 63 | if (bit_shift >= 0) |
| 64 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 65 | result = (0x2B ^ ((guint8)bitvec_read_field(vector, readIndex, 8))) >> bit_shift; |
| 66 | *readIndex-= bit_shift; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 67 | result &= maskBits[no_of_bits]; |
| 68 | } |
| 69 | else |
Pau Espin Pedrol | f960d5b | 2020-01-23 19:05:00 +0100 | [diff] [blame] | 70 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 71 | guint8 hight_part = (0x2B ^ ((guint8)bitvec_read_field(vector, readIndex, 8))) & maskBits[8 - relative_bit_offset]; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 72 | hight_part = (guint8) (hight_part << (-bit_shift)); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 73 | result = (0x2B ^ ((guint8)bitvec_read_field(vector, readIndex, 8))) >> (8 + bit_shift); |
| 74 | *readIndex = *readIndex - (8 - (-bit_shift)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 75 | result |= hight_part; |
| 76 | } |
| 77 | return result; |
| 78 | } |
| 79 | |
| 80 | /** |
| 81 | * ================================================================================================ |
| 82 | * set initial/start values in help data structure used for packing/unpacking operation |
| 83 | * ================================================================================================ |
| 84 | */ |
| 85 | void |
| 86 | csnStreamInit(csnStream_t* ar, gint bit_offset, gint remaining_bits_len) |
| 87 | { |
| 88 | ar->remaining_bits_len = remaining_bits_len; |
| 89 | ar->bit_offset = bit_offset; |
Ivan Kluchnikov | 1b51734 | 2013-12-30 14:26:06 +0400 | [diff] [blame] | 90 | ar->direction = 0; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 91 | } |
| 92 | |
Pau Espin Pedrol | d636f74 | 2020-02-03 15:37:08 +0100 | [diff] [blame] | 93 | static const struct value_string csn1_error_names[] = { |
| 94 | { CSN_OK, "General 0" }, |
| 95 | { CSN_ERROR_GENERAL, "General -1" }, |
| 96 | { CSN_ERROR_DATA_NOT_VALID, "DATA_NOT VALID" }, |
| 97 | { CSN_ERROR_IN_SCRIPT, "IN SCRIPT" }, |
| 98 | { CSN_ERROR_INVALID_UNION_INDEX, "INVALID UNION INDEX" }, |
| 99 | { CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, "NEED_MORE BITS TO UNPACK" }, |
Vadim Yanitskiy | fee767f | 2020-02-11 05:28:02 +0700 | [diff] [blame] | 100 | { CSN_ERROR_ILLEGAL_BIT_VALUE, "ILLEGAL BIT VALUE" }, |
| 101 | { CSN_ERROR_INTERNAL, "INTERNAL" }, |
Pau Espin Pedrol | d636f74 | 2020-02-03 15:37:08 +0100 | [diff] [blame] | 102 | { CSN_ERROR_STREAM_NOT_SUPPORTED, "STREAM_NOT_SUPPORTED" }, |
| 103 | { CSN_ERROR_MESSAGE_TOO_LONG, "MESSAGE_TOO_LONG" }, |
| 104 | { 0, NULL } |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 105 | }; |
| 106 | |
Pau Espin Pedrol | d636f74 | 2020-02-03 15:37:08 +0100 | [diff] [blame] | 107 | |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 108 | static gint16 ProcessError_impl(const char *file, int line, unsigned *readIndex, |
Pau Espin Pedrol | d636f74 | 2020-02-03 15:37:08 +0100 | [diff] [blame] | 109 | const char* sz, gint16 err, const CSN_DESCR* pDescr) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 110 | { |
Pau Espin Pedrol | ac2b866 | 2020-02-03 18:58:24 +0100 | [diff] [blame] | 111 | /* Don't add trailing newline, top caller is responsible for appending it */ |
Pau Espin Pedrol | d636f74 | 2020-02-03 15:37:08 +0100 | [diff] [blame] | 112 | if (err != CSN_OK) |
Vadim Yanitskiy | 1553049 | 2020-02-17 19:38:22 +0700 | [diff] [blame] | 113 | LOGPSRC(DCSN1, LOGL_ERROR, file, line, "%s: error %s (%d) at %s (idx %u)", |
Pau Espin Pedrol | d636f74 | 2020-02-03 15:37:08 +0100 | [diff] [blame] | 114 | sz, get_value_string(csn1_error_names, err), err, |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 115 | pDescr ? pDescr->sz : "-", *readIndex); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 116 | return err; |
| 117 | } |
| 118 | |
Pau Espin Pedrol | d636f74 | 2020-02-03 15:37:08 +0100 | [diff] [blame] | 119 | #define ProcessError(readIndex, sz, err, pDescr) \ |
| 120 | ProcessError_impl(__FILE__, __LINE__, readIndex, sz, err, pDescr) |
| 121 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 122 | |
| 123 | /** |
| 124 | * ================================================================================================ |
| 125 | * Return TRUE if tag in bit stream indicates existence of next list element, |
| 126 | * otherwise return FALSE. |
| 127 | * Will work for tag values equal to both 0 and 1. |
| 128 | * ================================================================================================ |
| 129 | */ |
| 130 | |
| 131 | static gboolean |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 132 | existNextElement(struct bitvec *vector, unsigned *readIndex, guint8 Tag) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 133 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 134 | int res = bitvec_get_bit_pos(vector, (*readIndex)++); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 135 | if (Tag == STANDARD_TAG) |
| 136 | { |
| 137 | return (res > 0); |
| 138 | } |
| 139 | return (res == 0); |
| 140 | } |
| 141 | |
| 142 | |
| 143 | gint16 |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 144 | csnStreamDecoder(csnStream_t* ar, const CSN_DESCR* pDescr, struct bitvec *vector, unsigned *readIndex, void* data) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 145 | { |
| 146 | gint remaining_bits_len = ar->remaining_bits_len; |
| 147 | gint bit_offset = ar->bit_offset; |
Anders Broman | c0190c8 | 2020-01-24 14:34:14 +0100 | [diff] [blame] | 148 | guint8* pui8 = NULL; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 149 | guint16* pui16; |
| 150 | guint32* pui32; |
| 151 | guint64* pui64; |
| 152 | guint8 Tag = STANDARD_TAG; |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 153 | unsigned ib; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 154 | |
Vadim Yanitskiy | 29aeb90 | 2020-03-06 08:53:36 +0700 | [diff] [blame] | 155 | if (remaining_bits_len < 0) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 156 | { |
Vadim Yanitskiy | 29aeb90 | 2020-03-06 08:53:36 +0700 | [diff] [blame] | 157 | return ProcessError(readIndex, __func__, CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 158 | } |
| 159 | |
| 160 | do |
| 161 | { |
| 162 | switch (pDescr->type) |
| 163 | { |
| 164 | case CSN_BIT: |
| 165 | { |
| 166 | if (remaining_bits_len > 0) |
| 167 | { |
| 168 | pui8 = pui8DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 169 | *pui8 = bitvec_read_field(vector, readIndex, 1); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 170 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 171 | /* end add the bit value to protocol tree */ |
| 172 | } |
Pau Espin Pedrol | 16705a4 | 2020-10-27 10:24:57 +0100 | [diff] [blame] | 173 | else if (pDescr->may_be_null) |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 174 | { |
| 175 | pui8 = pui8DATA(data, pDescr->offset); |
| 176 | *pui8 = 0; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 177 | LOGPC(DCSN1, LOGL_DEBUG, "%s = NULL | ", pDescr->sz); |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 178 | } |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 179 | else |
| 180 | { |
| 181 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 182 | } |
| 183 | |
| 184 | pDescr++; |
| 185 | remaining_bits_len--; |
| 186 | bit_offset++; |
| 187 | break; |
| 188 | } |
| 189 | |
| 190 | case CSN_NULL: |
| 191 | { /* Empty member! */ |
Anders Broman | 72c102a | 2020-01-24 14:31:15 +0100 | [diff] [blame] | 192 | bit_offset += pDescr->i; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 193 | pDescr++; |
| 194 | break; |
| 195 | } |
| 196 | |
| 197 | case CSN_UINT: |
| 198 | { |
| 199 | guint8 no_of_bits = (guint8) pDescr->i; |
| 200 | |
| 201 | if (remaining_bits_len >= no_of_bits) |
| 202 | { |
| 203 | if (no_of_bits <= 8) |
| 204 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 205 | guint8 ui8 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 206 | pui8 = pui8DATA(data, pDescr->offset); |
| 207 | *pui8 = ui8; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 208 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 209 | } |
| 210 | else if (no_of_bits <= 16) |
| 211 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 212 | guint16 ui16 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 213 | pui16 = pui16DATA(data, pDescr->offset); |
| 214 | *pui16 = ui16; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 215 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , *pui16); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 216 | } |
| 217 | else if (no_of_bits <= 32) |
| 218 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 219 | guint32 ui32 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 220 | pui32 = pui32DATA(data, pDescr->offset); |
| 221 | *pui32 = ui32; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 222 | LOGPC(DCSN1, LOGL_DEBUG, "%s = 0x%08x | ", pDescr->sz , *pui32); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 223 | } |
| 224 | else |
| 225 | { |
| 226 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 227 | } |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 228 | remaining_bits_len -= no_of_bits; |
| 229 | bit_offset += no_of_bits; |
| 230 | } |
Pau Espin Pedrol | 16705a4 | 2020-10-27 10:24:57 +0100 | [diff] [blame] | 231 | else if (pDescr->may_be_null) |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 232 | { |
| 233 | if (no_of_bits <= 8) |
| 234 | { |
| 235 | pui8 = pui8DATA(data, pDescr->offset); |
| 236 | *pui8 = 0; |
| 237 | } |
| 238 | else if (no_of_bits <= 16) |
| 239 | { |
| 240 | pui16 = pui16DATA(data, pDescr->offset); |
| 241 | *pui16 = 0; |
| 242 | } |
| 243 | else if (no_of_bits <= 32) |
| 244 | { |
| 245 | pui32 = pui32DATA(data, pDescr->offset); |
| 246 | *pui32 = 0; |
| 247 | } |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 248 | LOGPC(DCSN1, LOGL_DEBUG, "%s = NULL | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 249 | } |
| 250 | else |
| 251 | { |
| 252 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 253 | } |
| 254 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 255 | pDescr++; |
| 256 | break; |
| 257 | } |
| 258 | |
| 259 | case CSN_UINT_OFFSET: |
| 260 | { |
| 261 | guint8 no_of_bits = (guint8) pDescr->i; |
| 262 | |
| 263 | if (remaining_bits_len >= no_of_bits) |
| 264 | { |
| 265 | if (no_of_bits <= 8) |
| 266 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 267 | guint8 ui8 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 268 | pui8 = pui8DATA(data, pDescr->offset); |
| 269 | *pui8 = ui8 + (guint8)pDescr->descr.value; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 270 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 271 | } |
| 272 | else if (no_of_bits <= 16) |
| 273 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 274 | guint16 ui16 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 275 | pui16 = pui16DATA(data, pDescr->offset); |
| 276 | *pui16 = ui16 + (guint16)pDescr->descr.value; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 277 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , *pui16); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 278 | } |
| 279 | else if (no_of_bits <= 32) |
| 280 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 281 | guint32 ui32 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 282 | pui32 = pui32DATA(data, pDescr->offset); |
| 283 | *pui32 = ui32 + (guint16)pDescr->descr.value; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 284 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , *pui32); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 285 | } |
| 286 | else |
| 287 | { |
| 288 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 289 | } |
| 290 | } |
| 291 | else |
| 292 | { |
| 293 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 294 | } |
| 295 | |
| 296 | remaining_bits_len -= no_of_bits; |
| 297 | bit_offset += no_of_bits; |
| 298 | pDescr++; |
| 299 | break; |
| 300 | } |
| 301 | |
| 302 | case CSN_UINT_LH: |
| 303 | { |
| 304 | guint8 no_of_bits = (guint8) pDescr->i; |
| 305 | |
| 306 | if (remaining_bits_len >= no_of_bits) |
| 307 | { |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 308 | if (no_of_bits <= 8) |
| 309 | { |
Alexander Couzens | ccde5c9 | 2017-02-04 03:10:08 +0100 | [diff] [blame] | 310 | guint8 ui8 = get_masked_bits8(vector, readIndex, bit_offset, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 311 | pui8 = pui8DATA(data, pDescr->offset); |
| 312 | *pui8 = ui8; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 313 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 314 | } |
| 315 | else |
| 316 | {/* Maybe we should support more than 8 bits ? */ |
| 317 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 318 | } |
| 319 | } |
| 320 | else |
| 321 | { |
| 322 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 323 | } |
| 324 | |
| 325 | remaining_bits_len -= no_of_bits; |
| 326 | bit_offset += no_of_bits; |
| 327 | pDescr++; |
| 328 | break; |
| 329 | } |
| 330 | |
| 331 | case CSN_UINT_ARRAY: |
| 332 | { |
| 333 | guint8 no_of_bits = (guint8) pDescr->i; |
| 334 | guint16 nCount = (guint16)pDescr->descr.value; /* nCount supplied by value i.e. M_UINT_ARRAY(...) */ |
| 335 | |
Pau Espin Pedrol | 900c2e2 | 2020-01-24 18:05:00 +0100 | [diff] [blame] | 336 | if (pDescr->value != 0) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 337 | { /* nCount specified by a reference to field holding value i.e. M_VAR_UINT_ARRAY(...) */ |
| 338 | nCount = *pui16DATA(data, nCount); |
| 339 | } |
| 340 | |
Pau Espin Pedrol | f5e275a | 2020-03-26 19:54:29 +0100 | [diff] [blame] | 341 | if (remaining_bits_len >= (no_of_bits * nCount)) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 342 | { |
| 343 | remaining_bits_len -= (no_of_bits*nCount); |
| 344 | if (no_of_bits <= 8) |
| 345 | { |
| 346 | pui8 = pui8DATA(data, pDescr->offset); |
| 347 | do |
| 348 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 349 | *pui8 = bitvec_read_field(vector, readIndex, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 350 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 351 | pui8++; |
| 352 | bit_offset += no_of_bits; |
| 353 | } while (--nCount > 0); |
| 354 | } |
| 355 | else if (no_of_bits <= 16) |
| 356 | { |
| 357 | return ProcessError(readIndex,"csnStreamDecoder NOTIMPLEMENTED", 999, pDescr); |
| 358 | } |
| 359 | else if (no_of_bits <= 32) |
| 360 | { |
| 361 | return ProcessError(readIndex,"csnStreamDecoder NOTIMPLEMENTED", 999, pDescr); |
| 362 | } |
| 363 | else |
| 364 | { |
| 365 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 366 | } |
| 367 | } |
| 368 | else |
| 369 | { |
| 370 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 371 | } |
| 372 | pDescr++; |
| 373 | break; |
| 374 | } |
| 375 | |
| 376 | case CSN_VARIABLE_TARRAY_OFFSET: |
| 377 | case CSN_VARIABLE_TARRAY: |
| 378 | case CSN_TYPE_ARRAY: |
| 379 | { |
| 380 | gint16 Status; |
| 381 | csnStream_t arT = *ar; |
| 382 | gint16 nCount = pDescr->i; |
Pau Espin Pedrol | 900c2e2 | 2020-01-24 18:05:00 +0100 | [diff] [blame] | 383 | guint16 nSize = (guint16)(gint32)pDescr->value; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 384 | |
| 385 | pui8 = pui8DATA(data, pDescr->offset); |
| 386 | if (pDescr->type == CSN_VARIABLE_TARRAY) |
| 387 | { /* Count specified in field */ |
| 388 | nCount = *pui8DATA(data, pDescr->i); |
| 389 | } |
| 390 | else if (pDescr->type == CSN_VARIABLE_TARRAY_OFFSET) |
| 391 | { /* Count specified in field */ |
| 392 | nCount = *pui8DATA(data, pDescr->i); |
| 393 | /* nCount--; the 1 offset is already taken into account in CSN_UINT_OFFSET */ |
| 394 | } |
| 395 | |
| 396 | while (nCount > 0) |
| 397 | { /* resulting array of length 0 is possible |
| 398 | * but no bits shall be read from bitstream |
| 399 | */ |
| 400 | |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 401 | LOGPC(DCSN1, LOGL_DEBUG, "%s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 402 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
Alexander Couzens | ccde5c9 | 2017-02-04 03:10:08 +0100 | [diff] [blame] | 403 | Status = csnStreamDecoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, readIndex, pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 404 | if (Status >= 0) |
| 405 | { |
| 406 | pui8 += nSize; |
| 407 | remaining_bits_len = arT.remaining_bits_len; |
| 408 | bit_offset = arT.bit_offset; |
| 409 | } |
| 410 | else |
| 411 | { |
| 412 | return Status; |
| 413 | } |
| 414 | nCount--; |
| 415 | } |
| 416 | |
| 417 | pDescr++; |
| 418 | break; |
| 419 | } |
| 420 | |
| 421 | case CSN_BITMAP: |
| 422 | { /* bitmap with given length. The result is left aligned! */ |
| 423 | guint8 no_of_bits = (guint8) pDescr->i; /* length of bitmap */ |
| 424 | |
| 425 | if (no_of_bits > 0) |
| 426 | { |
Pau Espin Pedrol | c8280a5 | 2020-03-26 20:29:53 +0100 | [diff] [blame] | 427 | if (no_of_bits > remaining_bits_len) |
| 428 | { |
| 429 | return ProcessError(readIndex, "csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 430 | } |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 431 | |
| 432 | if (no_of_bits <= 32) |
| 433 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 434 | for(ib = 0; ib < 4; ib++) |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 435 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 436 | guint8 ui8 = bitvec_read_field(vector, readIndex, 8); |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 437 | pui8 = pui8DATA(data, pDescr->offset+ib); |
| 438 | *pui8 = ui8; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 439 | LOGPC(DCSN1, LOGL_DEBUG, "%s[%u] = %u | ", pDescr->sz , ib, (unsigned)*pui8); |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 440 | } |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 441 | } |
| 442 | else if (no_of_bits <= 64) |
| 443 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 444 | for(ib = 0; ib < 8; ib++) |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 445 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 446 | guint8 ui8 = bitvec_read_field(vector, readIndex, 8); |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 447 | pui8 = pui8DATA(data, pDescr->offset+ib); |
| 448 | *pui8 = ui8; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 449 | LOGPC(DCSN1, LOGL_DEBUG, "%s[%u] = %u | ", pDescr->sz , ib, (unsigned)*pui8); |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 450 | } |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 451 | } |
| 452 | else |
| 453 | { |
| 454 | return ProcessError(readIndex,"csnStreamDecoder NOT IMPLEMENTED", 999, pDescr); |
| 455 | } |
| 456 | |
| 457 | remaining_bits_len -= no_of_bits; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 458 | bit_offset += no_of_bits; |
| 459 | } |
| 460 | /* bitmap was successfully extracted or it was empty */ |
| 461 | |
| 462 | pDescr++; |
| 463 | break; |
| 464 | } |
| 465 | |
| 466 | case CSN_TYPE: |
| 467 | { |
| 468 | gint16 Status; |
| 469 | csnStream_t arT = *ar; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 470 | LOGPC(DCSN1, LOGL_DEBUG, " : %s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 471 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
Alexander Couzens | ccde5c9 | 2017-02-04 03:10:08 +0100 | [diff] [blame] | 472 | Status = csnStreamDecoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, readIndex, pvDATA(data, pDescr->offset)); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 473 | LOGPC(DCSN1, LOGL_DEBUG, ": End %s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 474 | if (Status >= 0) |
| 475 | { |
| 476 | remaining_bits_len = arT.remaining_bits_len; |
| 477 | bit_offset = arT.bit_offset; |
| 478 | pDescr++; |
| 479 | } |
| 480 | else |
| 481 | { |
| 482 | /* Has already been processed: ProcessError("csnStreamDecoder", Status, pDescr); */ |
| 483 | return Status; |
| 484 | } |
| 485 | |
| 486 | break; |
| 487 | } |
| 488 | |
| 489 | case CSN_CHOICE: |
| 490 | { |
| 491 | gint16 count = pDescr->i; |
| 492 | guint8 i = 0; |
| 493 | CSN_ChoiceElement_t* pChoice = (CSN_ChoiceElement_t*) pDescr->descr.ptr; |
| 494 | |
Vadim Yanitskiy | 5574a58 | 2020-02-11 05:39:06 +0700 | [diff] [blame] | 495 | /* Make sure that the list of choice items is not empty */ |
| 496 | if (!count) |
| 497 | return ProcessError(readIndex, "csnStreamDecoder", CSN_ERROR_IN_SCRIPT, pDescr); |
Vadim Yanitskiy | c991566 | 2020-05-23 17:24:37 +0700 | [diff] [blame] | 498 | else if (count > 255) /* We can handle up to 256 (UCHAR_MAX) selectors */ |
| 499 | return ProcessError(readIndex, "csnStreamDecoder", CSN_ERROR_IN_SCRIPT, pDescr); |
Vadim Yanitskiy | 5574a58 | 2020-02-11 05:39:06 +0700 | [diff] [blame] | 500 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 501 | while (count > 0) |
| 502 | { |
| 503 | guint8 no_of_bits = pChoice->bits; |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 504 | guint8 value = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 505 | if (value == pChoice->value) |
| 506 | { |
| 507 | CSN_DESCR descr[2]; |
| 508 | gint16 Status; |
| 509 | csnStream_t arT = *ar; |
| 510 | |
| 511 | descr[0] = pChoice->descr; |
| 512 | memset(&descr[1], 0x00, sizeof(CSN_DESCR)); |
| 513 | descr[1].type = CSN_END; |
| 514 | pui8 = pui8DATA(data, pDescr->offset); |
| 515 | *pui8 = i; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 516 | LOGPC(DCSN1, LOGL_DEBUG, "Choice %s = %u | ", pDescr->sz , (unsigned)value); |
Pau Espin Pedrol | 7cce825 | 2020-01-24 16:41:14 +0100 | [diff] [blame] | 517 | if (!pChoice->keep_bits) { |
| 518 | bit_offset += no_of_bits; |
| 519 | remaining_bits_len -= no_of_bits; |
| 520 | } |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 521 | |
| 522 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
Alexander Couzens | ccde5c9 | 2017-02-04 03:10:08 +0100 | [diff] [blame] | 523 | Status = csnStreamDecoder(&arT, descr, vector, readIndex, data); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 524 | |
| 525 | if (Status >= 0) |
| 526 | { |
| 527 | remaining_bits_len = arT.remaining_bits_len; |
| 528 | bit_offset = arT.bit_offset; |
| 529 | } |
| 530 | else |
| 531 | { |
| 532 | return Status; |
| 533 | } |
| 534 | break; |
| 535 | } |
| 536 | |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 537 | *readIndex -= no_of_bits; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 538 | count--; |
| 539 | pChoice++; |
| 540 | i++; |
| 541 | } |
| 542 | |
Vadim Yanitskiy | 5574a58 | 2020-02-11 05:39:06 +0700 | [diff] [blame] | 543 | /* Neither of the choice items matched => unknown value */ |
| 544 | if (!count) |
| 545 | return ProcessError(readIndex, "csnStreamDecoder", CSN_ERROR_STREAM_NOT_SUPPORTED, pDescr); |
| 546 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 547 | pDescr++; |
| 548 | break; |
| 549 | } |
| 550 | |
| 551 | case CSN_SERIALIZE: |
| 552 | { |
Pau Espin Pedrol | 5b71697 | 2020-01-24 17:24:01 +0100 | [diff] [blame] | 553 | StreamSerializeFcn_t serialize = (StreamSerializeFcn_t)pDescr->aux_fn; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 554 | csnStream_t arT = *ar; |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 555 | guint8 length_len = pDescr->i; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 556 | gint16 Status = -1; |
| 557 | |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 558 | guint8 length = bitvec_read_field(vector, readIndex, length_len); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 559 | |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 560 | LOGPC(DCSN1, LOGL_DEBUG, "%s length = %u | ", pDescr->sz , length); |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 561 | bit_offset += length_len; |
| 562 | remaining_bits_len -= length_len; |
| 563 | |
Pau Espin Pedrol | 98e4c53 | 2020-01-24 16:26:37 +0100 | [diff] [blame] | 564 | csnStreamInit(&arT, bit_offset, length > 0 ? length : remaining_bits_len); |
Daniel Willmann | 6f0796a | 2014-01-15 09:57:07 +0100 | [diff] [blame] | 565 | arT.direction = 1; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 566 | LOGPC(DCSN1, LOGL_DEBUG, "offset = %u | ", pDescr->offset); |
Alexander Couzens | ccde5c9 | 2017-02-04 03:10:08 +0100 | [diff] [blame] | 567 | Status = serialize(&arT, vector, readIndex, pvDATA(data, pDescr->offset)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 568 | |
| 569 | if (Status >= 0) |
| 570 | { |
Pau Espin Pedrol | 98e4c53 | 2020-01-24 16:26:37 +0100 | [diff] [blame] | 571 | if (length > 0) { |
| 572 | remaining_bits_len -= length; |
| 573 | bit_offset += length; |
| 574 | } else { |
| 575 | remaining_bits_len = arT.remaining_bits_len; |
| 576 | bit_offset = arT.bit_offset; |
| 577 | } |
Vadim Yanitskiy | 2679ec0 | 2020-03-06 07:21:32 +0700 | [diff] [blame] | 578 | |
| 579 | /* Skip bits not handled by serialize(), if any */ |
| 580 | if (Status > 0) { |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 581 | LOGPC(DCSN1, LOGL_DEBUG, "skipped = %d | ", Status); |
Vadim Yanitskiy | 2679ec0 | 2020-03-06 07:21:32 +0700 | [diff] [blame] | 582 | *readIndex += Status; |
| 583 | } |
| 584 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 585 | pDescr++; |
| 586 | } |
| 587 | else |
| 588 | { |
| 589 | /* Has already been processed: */ |
| 590 | return Status; |
| 591 | } |
| 592 | |
| 593 | break; |
| 594 | } |
| 595 | |
| 596 | case CSN_UNION_LH: |
| 597 | case CSN_UNION: |
| 598 | { |
| 599 | gint16 Bits; |
| 600 | guint8 index; |
| 601 | gint16 count = pDescr->i; |
| 602 | const CSN_DESCR* pDescrNext = pDescr; |
| 603 | |
| 604 | pDescrNext += count + 1; /* now this is next after the union */ |
| 605 | if ((count <= 0) || (count > 16)) |
| 606 | { |
| 607 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_INVALID_UNION_INDEX, pDescr); |
| 608 | } |
| 609 | |
| 610 | /* Now get the bits to extract the index */ |
| 611 | Bits = ixBitsTab[count]; |
| 612 | index = 0; |
| 613 | |
| 614 | while (Bits > 0) |
| 615 | { |
| 616 | index <<= 1; |
| 617 | |
| 618 | if (CSN_UNION_LH == pDescr->type) |
| 619 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 620 | index |= get_masked_bits8(vector, readIndex, bit_offset, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 621 | } |
| 622 | else |
| 623 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 624 | index |= bitvec_read_field(vector, readIndex, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 625 | } |
| 626 | remaining_bits_len--; |
| 627 | bit_offset++; |
| 628 | Bits--; |
| 629 | } |
| 630 | |
| 631 | /* Assign UnionType */ |
| 632 | pui8 = pui8DATA(data, pDescr->offset); |
| 633 | *pui8 = index; |
Pau Espin Pedrol | f960d5b | 2020-01-23 19:05:00 +0100 | [diff] [blame] | 634 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 635 | |
| 636 | /* script index to continue on, limited in case we do not have a power of 2 */ |
| 637 | pDescr += (MIN(index + 1, count)); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 638 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 639 | |
| 640 | switch (pDescr->type) |
| 641 | { /* get the right element of the union based on computed index */ |
| 642 | |
| 643 | case CSN_BIT: |
| 644 | { |
| 645 | pui8 = pui8DATA(data, pDescr->offset); |
| 646 | *pui8 = 0x00; |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 647 | if (bitvec_read_field(vector, readIndex, 1) > 0) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 648 | { |
| 649 | *pui8 = 0x01; |
| 650 | } |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 651 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 652 | remaining_bits_len -= 1; |
| 653 | bit_offset++; |
| 654 | pDescr++; |
| 655 | break; |
| 656 | } |
| 657 | |
| 658 | case CSN_NULL: |
| 659 | { /* Empty member! */ |
Anders Broman | 72c102a | 2020-01-24 14:31:15 +0100 | [diff] [blame] | 660 | bit_offset += pDescr->i; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 661 | pDescr++; |
| 662 | break; |
| 663 | } |
| 664 | |
| 665 | case CSN_UINT: |
| 666 | { |
| 667 | guint8 no_of_bits = (guint8) pDescr->i; |
| 668 | if (remaining_bits_len >= no_of_bits) |
| 669 | { |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 670 | if (no_of_bits <= 8) |
| 671 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 672 | guint8 ui8 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 673 | pui8 = pui8DATA(data, pDescr->offset); |
| 674 | *pui8 = ui8; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 675 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 676 | } |
| 677 | else if (no_of_bits <= 16) |
| 678 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 679 | guint16 ui16 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 680 | pui16 = pui16DATA(data, pDescr->offset); |
| 681 | *pui16 = ui16; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 682 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , *pui16); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 683 | } |
| 684 | else if (no_of_bits <= 32) |
| 685 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 686 | guint32 ui32 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 687 | pui32 = pui32DATA(data, pDescr->offset); |
| 688 | *pui32 = ui32; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 689 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , *pui32); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 690 | } |
| 691 | else |
| 692 | { |
| 693 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 694 | } |
| 695 | } |
| 696 | else |
| 697 | { |
| 698 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 699 | } |
| 700 | |
Vadim Yanitskiy | e87066d | 2020-02-17 18:02:32 +0700 | [diff] [blame] | 701 | remaining_bits_len -= no_of_bits; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 702 | bit_offset += no_of_bits; |
| 703 | pDescr++; |
| 704 | break; |
| 705 | } |
| 706 | |
| 707 | case CSN_UINT_OFFSET: |
| 708 | { |
| 709 | guint8 no_of_bits = (guint8) pDescr->i; |
| 710 | |
| 711 | if (remaining_bits_len >= no_of_bits) |
| 712 | { |
| 713 | if (no_of_bits <= 8) |
| 714 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 715 | guint8 ui8 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 716 | pui8 = pui8DATA(data, pDescr->offset); |
| 717 | *pui8 = ui8 + (guint8)pDescr->descr.value; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 718 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 719 | } |
| 720 | else if (no_of_bits <= 16) |
| 721 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 722 | guint16 ui16 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 723 | pui16 = pui16DATA(data, pDescr->offset); |
| 724 | *pui16 = ui16 + (guint16)pDescr->descr.value; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 725 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , *pui16); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 726 | } |
| 727 | else if (no_of_bits <= 32) |
| 728 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 729 | guint32 ui32 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 730 | pui32 = pui32DATA(data, pDescr->offset); |
| 731 | *pui32 = ui32 + (guint16)pDescr->descr.value; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 732 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , *pui32); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 733 | } |
| 734 | else |
| 735 | { |
| 736 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 737 | } |
| 738 | } |
| 739 | else |
| 740 | { |
| 741 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 742 | } |
| 743 | |
Vadim Yanitskiy | e87066d | 2020-02-17 18:02:32 +0700 | [diff] [blame] | 744 | remaining_bits_len -= no_of_bits; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 745 | bit_offset += no_of_bits; |
| 746 | pDescr++; |
| 747 | break; |
| 748 | } |
| 749 | |
| 750 | case CSN_UINT_LH: |
| 751 | { |
| 752 | guint8 no_of_bits = (guint8) pDescr->i; |
| 753 | |
| 754 | if (remaining_bits_len >= no_of_bits) |
| 755 | { |
| 756 | if (no_of_bits <= 8) |
| 757 | { |
Alexander Couzens | ccde5c9 | 2017-02-04 03:10:08 +0100 | [diff] [blame] | 758 | guint8 ui8 = get_masked_bits8(vector, readIndex, bit_offset, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 759 | pui8 = pui8DATA(data, pDescr->offset); |
| 760 | *pui8 = ui8; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 761 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 762 | } |
| 763 | else |
| 764 | { /* Maybe we should support more than 8 bits ? */ |
| 765 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 766 | } |
| 767 | } |
| 768 | else |
| 769 | { |
| 770 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 771 | } |
| 772 | |
Vadim Yanitskiy | e87066d | 2020-02-17 18:02:32 +0700 | [diff] [blame] | 773 | remaining_bits_len -= no_of_bits; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 774 | bit_offset += no_of_bits; |
| 775 | pDescr++; |
| 776 | break; |
| 777 | } |
| 778 | |
| 779 | case CSN_UINT_ARRAY: |
| 780 | { |
| 781 | guint8 no_of_bits = (guint8) pDescr->i; |
| 782 | guint16 nCount = (guint16)pDescr->descr.value; /* nCount supplied by value i.e. M_UINT_ARRAY(...) */ |
| 783 | |
Pau Espin Pedrol | 900c2e2 | 2020-01-24 18:05:00 +0100 | [diff] [blame] | 784 | if (pDescr->value != 0) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 785 | { /* nCount specified by a reference to field holding value i.e. M_VAR_UINT_ARRAY(...) */ |
| 786 | nCount = *pui16DATA(data, nCount); |
| 787 | } |
| 788 | |
Pau Espin Pedrol | f5e275a | 2020-03-26 19:54:29 +0100 | [diff] [blame] | 789 | if (remaining_bits_len >= (no_of_bits * nCount)) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 790 | { |
| 791 | remaining_bits_len -= (no_of_bits * nCount); |
| 792 | if (no_of_bits <= 8) |
| 793 | { |
| 794 | pui8 = pui8DATA(data, pDescr->offset); |
| 795 | |
| 796 | while (nCount > 0) |
| 797 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 798 | *pui8 = bitvec_read_field(vector, readIndex, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 799 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 800 | pui8++; |
| 801 | bit_offset += no_of_bits; |
| 802 | nCount--; |
| 803 | } |
| 804 | } |
| 805 | else if (no_of_bits <= 16) |
| 806 | { |
| 807 | pui16 = pui16DATA(data, pDescr->offset); |
| 808 | |
| 809 | while (nCount > 0) |
| 810 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 811 | *pui16 = bitvec_read_field(vector, readIndex, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 812 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , *pui16); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 813 | pui16++; |
| 814 | bit_offset += no_of_bits; |
| 815 | nCount--; |
| 816 | } |
| 817 | } |
| 818 | else if (no_of_bits <= 32) |
| 819 | { /* not supported */ |
| 820 | return ProcessError(readIndex,"csnStreamDecoder NOT IMPLEMENTED", 999, pDescr); |
| 821 | } |
| 822 | else |
| 823 | { |
| 824 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_GENERAL, pDescr); |
| 825 | } |
| 826 | } |
| 827 | else |
| 828 | { |
| 829 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 830 | } |
| 831 | |
| 832 | pDescr++; |
| 833 | break; |
| 834 | } |
| 835 | |
| 836 | case CSN_VARIABLE_TARRAY_OFFSET: |
| 837 | case CSN_VARIABLE_TARRAY: |
| 838 | case CSN_TYPE_ARRAY: |
| 839 | { |
| 840 | gint16 Status; |
| 841 | csnStream_t arT = *ar; |
| 842 | guint16 nCount = (guint16) pDescr->i; |
Pau Espin Pedrol | 900c2e2 | 2020-01-24 18:05:00 +0100 | [diff] [blame] | 843 | guint16 nSize = (guint16)(guint32)pDescr->value; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 844 | |
| 845 | pui8 = pui8DATA(data, pDescr->offset); |
| 846 | |
| 847 | if (CSN_VARIABLE_TARRAY == pDescr->type) |
| 848 | { /* Count specified in field */ |
| 849 | nCount = *pui8DATA(data, pDescr->i); |
| 850 | } |
| 851 | else if (CSN_VARIABLE_TARRAY_OFFSET == pDescr->type) |
| 852 | { /* Count specified in field */ |
| 853 | nCount = *pui8DATA(data, pDescr->i); |
| 854 | nCount--; /* Offset 1 */ |
| 855 | } |
| 856 | |
| 857 | while (nCount--) /* Changed to handle length = 0. */ |
| 858 | { |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 859 | LOGPC(DCSN1, LOGL_DEBUG, "%s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 860 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
Alexander Couzens | ccde5c9 | 2017-02-04 03:10:08 +0100 | [diff] [blame] | 861 | Status = csnStreamDecoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, readIndex, pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 862 | if (Status >= 0) |
| 863 | { |
| 864 | pui8 += nSize; |
| 865 | remaining_bits_len = arT.remaining_bits_len; |
| 866 | bit_offset = arT.bit_offset; |
| 867 | } |
| 868 | else |
| 869 | { |
| 870 | return Status; |
| 871 | } |
| 872 | } |
| 873 | |
| 874 | pDescr++; |
| 875 | break; |
| 876 | } |
| 877 | |
| 878 | case CSN_BITMAP: |
| 879 | { /* bitmap with given length. The result is left aligned! */ |
| 880 | guint8 no_of_bits = (guint8) pDescr->i; /* length of bitmap */ |
| 881 | |
| 882 | if (no_of_bits > 0) |
| 883 | { |
Pau Espin Pedrol | c8280a5 | 2020-03-26 20:29:53 +0100 | [diff] [blame] | 884 | if (no_of_bits > remaining_bits_len) |
| 885 | { |
| 886 | return ProcessError(readIndex, "csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 887 | } |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 888 | |
| 889 | if (no_of_bits <= 32) |
| 890 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 891 | guint32 ui32 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 892 | pui32 = pui32DATA(data, pDescr->offset); |
| 893 | *pui32 = ui32; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 894 | } |
| 895 | else if (no_of_bits <= 64) |
| 896 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 897 | guint64 ui64 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 898 | pui64 = pui64DATA(data, pDescr->offset); |
| 899 | *pui64 = ui64; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 900 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %lu | ", pDescr->sz , *pui64); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 901 | } |
| 902 | else |
| 903 | { |
| 904 | return ProcessError(readIndex,"csnStreamDecoder NOT IMPLEMENTED", 999, pDescr); |
| 905 | } |
| 906 | |
| 907 | remaining_bits_len -= no_of_bits; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 908 | bit_offset += no_of_bits; |
| 909 | } |
| 910 | /* bitmap was successfully extracted or it was empty */ |
| 911 | |
| 912 | pDescr++; |
| 913 | break; |
| 914 | } |
| 915 | |
| 916 | case CSN_TYPE: |
| 917 | { |
| 918 | gint16 Status; |
| 919 | csnStream_t arT = *ar; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 920 | LOGPC(DCSN1, LOGL_DEBUG, " : %s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 921 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
Alexander Couzens | ccde5c9 | 2017-02-04 03:10:08 +0100 | [diff] [blame] | 922 | Status = csnStreamDecoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, readIndex, pvDATA(data, pDescr->offset)); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 923 | LOGPC(DCSN1, LOGL_DEBUG, " : End %s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 924 | if (Status >= 0) |
| 925 | { |
| 926 | remaining_bits_len = arT.remaining_bits_len; |
| 927 | bit_offset = arT.bit_offset; |
| 928 | pDescr++; |
| 929 | } |
| 930 | else |
| 931 | { /* return error code Has already been processed: */ |
| 932 | return Status; |
| 933 | } |
| 934 | |
| 935 | break; |
| 936 | } |
| 937 | |
| 938 | default: |
| 939 | { /* descriptions of union elements other than above are illegal */ |
| 940 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_IN_SCRIPT, pDescr); |
| 941 | } |
| 942 | } |
| 943 | |
| 944 | pDescr = pDescrNext; |
| 945 | break; |
| 946 | } |
| 947 | |
| 948 | case CSN_EXIST: |
| 949 | case CSN_EXIST_LH: |
| 950 | { |
| 951 | guint8 fExist; |
| 952 | |
| 953 | pui8 = pui8DATA(data, pDescr->offset); |
| 954 | |
| 955 | if (CSN_EXIST_LH == pDescr->type) |
| 956 | { |
Alexander Couzens | ccde5c9 | 2017-02-04 03:10:08 +0100 | [diff] [blame] | 957 | fExist = get_masked_bits8(vector, readIndex, bit_offset, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 958 | } |
| 959 | else |
| 960 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 961 | fExist = bitvec_read_field(vector, readIndex, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 962 | } |
| 963 | |
| 964 | *pui8 = fExist; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 965 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 966 | pDescr++; |
Vadim Yanitskiy | d8e5e8b | 2020-02-17 18:16:20 +0700 | [diff] [blame] | 967 | bit_offset++; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 968 | remaining_bits_len -= 1; |
| 969 | |
| 970 | if (!fExist) |
| 971 | { |
| 972 | ar->remaining_bits_len = remaining_bits_len; |
| 973 | ar->bit_offset = bit_offset; |
| 974 | return remaining_bits_len; |
| 975 | } |
| 976 | |
| 977 | break; |
| 978 | } |
| 979 | |
| 980 | case CSN_NEXT_EXIST: |
| 981 | { |
| 982 | guint8 fExist; |
| 983 | |
| 984 | pui8 = pui8DATA(data, pDescr->offset); |
| 985 | |
| 986 | /* this if-statement represents the M_NEXT_EXIST_OR_NULL description element */ |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 987 | if ((pDescr->may_be_null) && (remaining_bits_len == 0)) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 988 | { /* no more bits to decode is fine here - end of message detected and allowed */ |
| 989 | |
| 990 | /* Skip i entries + this entry */ |
| 991 | pDescr += pDescr->i + 1; |
| 992 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 993 | /* Set the data member to "not exist" */ |
| 994 | *pui8 = 0; |
| 995 | break; |
| 996 | } |
| 997 | |
| 998 | /* the "regular" M_NEXT_EXIST description element */ |
| 999 | |
| 1000 | fExist = 0x00; |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1001 | if (bitvec_read_field(vector, readIndex, 1)) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1002 | { |
| 1003 | fExist = 0x01; |
| 1004 | } |
| 1005 | |
| 1006 | *pui8 = fExist; |
| 1007 | remaining_bits_len -= 1; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1008 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1009 | ++bit_offset; |
| 1010 | |
| 1011 | if (fExist == 0) |
| 1012 | { /* Skip 'i' entries */ |
| 1013 | pDescr += pDescr->i; |
| 1014 | } |
| 1015 | |
| 1016 | pDescr++; |
| 1017 | break; |
| 1018 | } |
| 1019 | |
| 1020 | case CSN_NEXT_EXIST_LH: |
| 1021 | { |
| 1022 | guint8 fExist; |
| 1023 | pui8 = pui8DATA(data, pDescr->offset); |
| 1024 | |
| 1025 | /* this if-statement represents the M_NEXT_EXIST_OR_NULL_LH description element */ |
| 1026 | if ((pDescr->descr.ptr != NULL) && (remaining_bits_len == 0)) |
| 1027 | { /* no more bits to decode is fine here - end of message detected and allowed */ |
| 1028 | |
| 1029 | /* skip 'i' entries + this entry */ |
| 1030 | pDescr += pDescr->i + 1; |
| 1031 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1032 | /* set the data member to "not exist" */ |
| 1033 | *pui8 = 0; |
| 1034 | break; |
| 1035 | } |
| 1036 | |
| 1037 | /* the "regular" M_NEXT_EXIST_LH description element */ |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1038 | fExist = get_masked_bits8(vector, readIndex, bit_offset, 1); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1039 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)fExist); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1040 | *pui8++ = fExist; |
| 1041 | remaining_bits_len -= 1; |
| 1042 | |
| 1043 | bit_offset++; |
| 1044 | |
| 1045 | if (fExist == 0) |
| 1046 | { /* Skip 'i' entries */ |
| 1047 | pDescr += pDescr->i; |
| 1048 | } |
| 1049 | pDescr++; |
| 1050 | |
| 1051 | break; |
| 1052 | } |
| 1053 | |
| 1054 | case CSN_VARIABLE_BITMAP_1: |
| 1055 | { /* Bitmap from here and to the end of message */ |
| 1056 | |
| 1057 | *pui8DATA(data, (gint16)pDescr->descr.value) = (guint8) remaining_bits_len; /* length of bitmap == remaining bits */ |
| 1058 | |
| 1059 | /*no break - |
| 1060 | * with a length set we have a regular variable length bitmap so we continue */ |
| 1061 | } |
Alexis La Goutte | e36fb5b | 2020-01-24 18:22:35 +0100 | [diff] [blame] | 1062 | /* FALL THROUGH */ |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1063 | case CSN_VARIABLE_BITMAP: |
| 1064 | { /* {CSN_VARIABLE_BITMAP, 0, offsetof(_STRUCT, _ElementCountField), offsetof(_STRUCT, _MEMBER), #_MEMBER} |
| 1065 | * <N: bit (5)> <bitmap: bit(N + offset)> |
| 1066 | * Bit array with length (in bits) specified in parameter (pDescr->descr) |
| 1067 | * The result is right aligned! |
| 1068 | */ |
| 1069 | gint16 no_of_bits = *pui8DATA(data, (gint16)pDescr->descr.value); |
| 1070 | |
| 1071 | no_of_bits += pDescr->i; /* adjusted by offset */ |
| 1072 | |
| 1073 | if (no_of_bits > 0) |
| 1074 | { |
| 1075 | remaining_bits_len -= no_of_bits; |
| 1076 | |
| 1077 | if (remaining_bits_len < 0) |
| 1078 | { |
| 1079 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1080 | } |
| 1081 | |
| 1082 | { /* extract bits */ |
| 1083 | guint8* pui8 = pui8DATA(data, pDescr->offset); |
| 1084 | gint16 nB1 = no_of_bits & 0x07;/* no_of_bits Mod 8 */ |
| 1085 | |
| 1086 | if (nB1 > 0) |
| 1087 | { /* take care of the first byte - it will be right aligned */ |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1088 | *pui8 = bitvec_read_field(vector, readIndex, nB1); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1089 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1090 | pui8++; |
| 1091 | no_of_bits -= nB1; |
| 1092 | bit_offset += nB1; /* (nB1 is no_of_bits Mod 8) */ |
| 1093 | } |
| 1094 | |
| 1095 | /* remaining no_of_bits is a multiple of 8 or 0 */ |
| 1096 | while (no_of_bits > 0) |
| 1097 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1098 | *pui8 = bitvec_read_field(vector, readIndex, 8); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1099 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1100 | pui8++; |
| 1101 | no_of_bits -= 8; |
| 1102 | } |
| 1103 | } |
| 1104 | } |
| 1105 | pDescr++; |
| 1106 | break; |
| 1107 | } |
| 1108 | |
| 1109 | case CSN_LEFT_ALIGNED_VAR_BMP_1: |
| 1110 | { /* Bitmap from here and to the end of message */ |
| 1111 | |
| 1112 | *pui8DATA(data, (gint16)pDescr->descr.value) = (guint8) remaining_bits_len; /* length of bitmap == remaining bits */ |
| 1113 | |
| 1114 | /* no break - |
| 1115 | * with a length set we have a regular left aligned variable length bitmap so we continue |
| 1116 | */ |
| 1117 | } |
Alexis La Goutte | e36fb5b | 2020-01-24 18:22:35 +0100 | [diff] [blame] | 1118 | /* FALL THROUGH */ |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1119 | case CSN_LEFT_ALIGNED_VAR_BMP: |
| 1120 | { /* {CSN_LEFT_ALIGNED_VAR_BMP, _OFFSET, (void*)offsetof(_STRUCT, _ElementCountField), offsetof(_STRUCT, _MEMBER), #_MEMBER} |
| 1121 | * <N: bit (5)> <bitmap: bit(N + offset)> |
| 1122 | * bit array with length (in bits) specified in parameter (pDescr->descr) |
| 1123 | */ |
| 1124 | gint16 no_of_bits = *pui8DATA(data, (gint16)pDescr->descr.value);/* Size of bitmap */ |
| 1125 | |
| 1126 | no_of_bits += pDescr->i;/* size adjusted by offset */ |
| 1127 | |
| 1128 | if (no_of_bits > 0) |
| 1129 | { |
| 1130 | remaining_bits_len -= no_of_bits; |
| 1131 | |
| 1132 | if (remaining_bits_len < 0) |
| 1133 | { |
| 1134 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1135 | } |
| 1136 | |
| 1137 | { /* extract bits */ |
| 1138 | guint8* pui8 = pui8DATA(data, pDescr->offset); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1139 | |
Neels Hofmeyr | 0241526 | 2016-09-02 02:15:26 +0200 | [diff] [blame] | 1140 | while (no_of_bits >= 8) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1141 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1142 | *pui8 = bitvec_read_field(vector, readIndex, 8); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1143 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1144 | pui8++; |
| 1145 | no_of_bits -= 8; |
| 1146 | } |
Neels Hofmeyr | 0241526 | 2016-09-02 02:15:26 +0200 | [diff] [blame] | 1147 | if (no_of_bits > 0) |
Pau Espin Pedrol | 70a2117 | 2020-03-26 19:50:50 +0100 | [diff] [blame] | 1148 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1149 | *pui8 = bitvec_read_field(vector, readIndex, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1150 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1151 | pui8++; |
Neels Hofmeyr | 0241526 | 2016-09-02 02:15:26 +0200 | [diff] [blame] | 1152 | bit_offset += no_of_bits; |
| 1153 | no_of_bits = 0; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1154 | } |
| 1155 | } |
| 1156 | } |
| 1157 | |
| 1158 | /* bitmap was successfully extracted or it was empty */ |
| 1159 | pDescr++; |
| 1160 | break; |
| 1161 | } |
| 1162 | |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 1163 | case CSN_PADDING_BITS: |
| 1164 | { /* Padding from here and to the end of message */ |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1165 | LOGPC(DCSN1, LOGL_DEBUG, "%s = ", pDescr->sz); |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 1166 | if (remaining_bits_len > 0) |
| 1167 | { |
| 1168 | while (remaining_bits_len > 0) |
| 1169 | { |
Pascal Quantin | c515551 | 2020-01-24 17:33:06 +0100 | [diff] [blame] | 1170 | guint bits_to_handle = remaining_bits_len%8; |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 1171 | if (bits_to_handle > 0) |
| 1172 | { |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1173 | LOGPC(DCSN1, LOGL_DEBUG, "%d|", bitvec_get_uint(vector, bits_to_handle)); |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 1174 | remaining_bits_len -= bits_to_handle; |
| 1175 | bit_offset += bits_to_handle; |
| 1176 | } |
| 1177 | else if (bits_to_handle == 0) |
| 1178 | { |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1179 | LOGPC(DCSN1, LOGL_DEBUG, "%d|", bitvec_get_uint(vector, 8)); |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 1180 | remaining_bits_len -= 8; |
| 1181 | bit_offset += 8; |
| 1182 | } |
| 1183 | } |
| 1184 | } |
| 1185 | if (remaining_bits_len < 0) |
| 1186 | { |
Pau Espin Pedrol | 70a2117 | 2020-03-26 19:50:50 +0100 | [diff] [blame] | 1187 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 1188 | } |
| 1189 | |
| 1190 | /* Padding was successfully extracted or it was empty */ |
| 1191 | pDescr++; |
| 1192 | break; |
| 1193 | } |
| 1194 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1195 | case CSN_VARIABLE_ARRAY: |
| 1196 | { /* {int type; int i; void* descr; int offset; const char* sz; } CSN_DESCR; |
| 1197 | * {CSN_VARIABLE_ARRAY, _OFFSET, (void*)offsetof(_STRUCT, _ElementCountField), offsetof(_STRUCT, _MEMBER), #_MEMBER} |
| 1198 | * Array with length specified in parameter: |
| 1199 | * <count: bit (x)> |
| 1200 | * <list: octet(count + offset)> |
| 1201 | */ |
| 1202 | gint16 count = *pui8DATA(data, (gint16)pDescr->descr.value); |
| 1203 | |
| 1204 | count += pDescr->i; /* Adjusted by offset */ |
| 1205 | |
| 1206 | if (count > 0) |
| 1207 | { |
| 1208 | remaining_bits_len -= count * 8; |
| 1209 | |
| 1210 | if (remaining_bits_len < 0) |
| 1211 | { |
| 1212 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1213 | } |
| 1214 | |
| 1215 | pui8 = pui8DATA(data, pDescr->offset); |
| 1216 | |
| 1217 | while (count > 0) |
| 1218 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1219 | *pui8 = bitvec_read_field(vector, readIndex, 8); |
Pau Espin Pedrol | 74aa352 | 2020-11-24 11:10:52 +0100 | [diff] [blame] | 1220 | LOGPC(DCSN1, LOGL_DEBUG, "%s = 0x%x | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1221 | pui8++; |
| 1222 | bit_offset += 8; |
| 1223 | count--; |
| 1224 | } |
| 1225 | } |
| 1226 | |
| 1227 | pDescr++; |
| 1228 | break; |
| 1229 | } |
| 1230 | |
| 1231 | case CSN_RECURSIVE_ARRAY: |
| 1232 | { /* Recursive way to specify an array: <list> ::= {1 <number: bit (4)> <list> | 0} |
| 1233 | * or more generally: <list> ::= { <tag> <element> <list> | <EndTag> } |
| 1234 | * where <element> ::= bit(value) |
| 1235 | * <tag> ::= 0 | 1 |
| 1236 | * <EndTag> ::= reversed tag i.e. tag == 1 -> EndTag == 0 and vice versa |
| 1237 | * {CSN_RECURSIVE_ARRAY, _BITS, (void*)offsetof(_STRUCT, _ElementCountField), offsetof(_STRUCT, _MEMBER), #_MEMBER} |
| 1238 | * REMARK: recursive way to specify an array but an iterative implementation! |
| 1239 | */ |
| 1240 | gint16 no_of_bits = pDescr->i; |
| 1241 | guint8 ElementCount = 0; |
| 1242 | |
| 1243 | pui8 = pui8DATA(data, pDescr->offset); |
| 1244 | |
Alexander Couzens | ccde5c9 | 2017-02-04 03:10:08 +0100 | [diff] [blame] | 1245 | while (existNextElement(vector, readIndex, Tag)) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1246 | { /* tag control shows existence of next list elements */ |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1247 | LOGPC(DCSN1, LOGL_DEBUG, "%s = Exist | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1248 | bit_offset++; |
| 1249 | remaining_bits_len--; |
| 1250 | |
| 1251 | /* extract and store no_of_bits long element from bitstream */ |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1252 | *pui8 = bitvec_read_field(vector, readIndex, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1253 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1254 | pui8++; |
| 1255 | remaining_bits_len -= no_of_bits; |
| 1256 | ElementCount++; |
| 1257 | |
| 1258 | if (remaining_bits_len < 0) |
| 1259 | { |
| 1260 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1261 | } |
| 1262 | |
| 1263 | bit_offset += no_of_bits; |
| 1264 | } |
| 1265 | |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1266 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %d | ", pDescr->sz , bitvec_get_uint(vector, 1)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1267 | /* existNextElement() returned FALSE, 1 bit consumed */ |
| 1268 | bit_offset++; |
Jeff Morriss | c0b4f4a | 2020-01-24 15:00:58 +0100 | [diff] [blame] | 1269 | remaining_bits_len--; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1270 | |
| 1271 | /* Store the counted number of elements of the array */ |
| 1272 | *pui8DATA(data, (gint16)pDescr->descr.value) = ElementCount; |
| 1273 | |
| 1274 | pDescr++; |
| 1275 | break; |
| 1276 | } |
| 1277 | |
| 1278 | case CSN_RECURSIVE_TARRAY: |
| 1279 | { /* Recursive way to specify an array of type: <lists> ::= { 1 <type> } ** 0 ; |
| 1280 | * M_REC_TARRAY(_STRUCT, _MEMBER, _MEMBER_TYPE, _ElementCountField) |
Pau Espin Pedrol | efad80b | 2020-03-23 14:35:26 +0100 | [diff] [blame] | 1281 | * {t, offsetof(_STRUCT, _ElementCountField), (void*)CSNDESCR_##_MEMBER_TYPE, offsetof(_STRUCT, _MEMBER), #_MEMBER, (StreamSerializeFcn_t)sizeof(_MEMBER_TYPE), (void_fn_t)ElementsOf(((_STRUCT*)0)->_MEMBER)} |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1282 | */ |
Pau Espin Pedrol | 900c2e2 | 2020-01-24 18:05:00 +0100 | [diff] [blame] | 1283 | gint16 nSizeElement = (gint16)(gint32)pDescr->value; |
Pau Espin Pedrol | efad80b | 2020-03-23 14:35:26 +0100 | [diff] [blame] | 1284 | guint32 nSizeArray = (guint32)((uintptr_t)pDescr->aux_fn); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1285 | guint8 ElementCount = 0; |
| 1286 | pui8 = pui8DATA(data, pDescr->offset); |
| 1287 | |
Alexander Couzens | ccde5c9 | 2017-02-04 03:10:08 +0100 | [diff] [blame] | 1288 | while (existNextElement(vector, readIndex, Tag)) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1289 | { /* tag control shows existence of next list elements */ |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1290 | LOGPC(DCSN1, LOGL_DEBUG, "%s = Exist | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1291 | /* existNextElement() returned TRUE, 1 bit consumed */ |
| 1292 | bit_offset++; |
| 1293 | remaining_bits_len--; |
| 1294 | ElementCount++; |
| 1295 | |
Pau Espin Pedrol | efad80b | 2020-03-23 14:35:26 +0100 | [diff] [blame] | 1296 | if (ElementCount > nSizeArray) |
| 1297 | { |
| 1298 | LOGPC(DCSN1, LOGL_ERROR, "error: %s: too many elements (>%u) in recursive array. Increase its size! } |", pDescr->sz, nSizeArray); |
| 1299 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_STREAM_NOT_SUPPORTED, pDescr); |
| 1300 | } |
| 1301 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1302 | { /* unpack the following data structure */ |
| 1303 | csnStream_t arT = *ar; |
| 1304 | gint16 Status; |
| 1305 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
Alexander Couzens | ccde5c9 | 2017-02-04 03:10:08 +0100 | [diff] [blame] | 1306 | Status = csnStreamDecoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, readIndex, pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1307 | |
| 1308 | if (Status >= 0) |
| 1309 | { /* successful completion */ |
| 1310 | pui8 += nSizeElement; /* -> to next data element */ |
| 1311 | remaining_bits_len = arT.remaining_bits_len; |
| 1312 | bit_offset = arT.bit_offset; |
| 1313 | } |
| 1314 | else |
| 1315 | { /* something went awry */ |
| 1316 | return Status; |
| 1317 | } |
| 1318 | } |
| 1319 | |
| 1320 | if (remaining_bits_len < 0) |
| 1321 | { |
| 1322 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1323 | } |
| 1324 | } |
| 1325 | |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1326 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %d | ", pDescr->sz , bitvec_get_uint(vector, 1)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1327 | |
| 1328 | /* existNextElement() returned FALSE, 1 bit consumed */ |
Vadim Yanitskiy | e87066d | 2020-02-17 18:02:32 +0700 | [diff] [blame] | 1329 | remaining_bits_len--; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1330 | bit_offset++; |
| 1331 | |
| 1332 | /* Store the counted number of elements of the array */ |
| 1333 | *pui8DATA(data, (gint16)(gint32)pDescr->i) = ElementCount; |
| 1334 | |
| 1335 | pDescr++; |
| 1336 | break; |
| 1337 | } |
| 1338 | |
| 1339 | case CSN_RECURSIVE_TARRAY_2: |
| 1340 | { /* Recursive way to specify an array of type: <list> ::= <type> { 0 <type> } ** 1 ; */ |
| 1341 | |
| 1342 | Tag = REVERSED_TAG; |
| 1343 | |
| 1344 | /* NO break - |
| 1345 | * handling is exactly the same as for CSN_RECURSIVE_TARRAY_1 so we continue |
| 1346 | */ |
| 1347 | } |
Alexis La Goutte | e36fb5b | 2020-01-24 18:22:35 +0100 | [diff] [blame] | 1348 | /* FALL THROUGH */ |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1349 | case CSN_RECURSIVE_TARRAY_1: |
| 1350 | { /* Recursive way to specify an array of type: <lists> ::= <type> { 1 <type> } ** 0 ; |
| 1351 | * M_REC_TARRAY(_STRUCT, _MEMBER, _MEMBER_TYPE, _ElementCountField) |
Pau Espin Pedrol | efad80b | 2020-03-23 14:35:26 +0100 | [diff] [blame] | 1352 | * {t, offsetof(_STRUCT, _ElementCountField), (void*)CSNDESCR_##_MEMBER_TYPE, offsetof(_STRUCT, _MEMBER), #_MEMBER, (StreamSerializeFcn_t)sizeof(_MEMBER_TYPE), (void_fn_t)ElementsOf(((_STRUCT*)0)->_MEMBER)} |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1353 | */ |
Pau Espin Pedrol | 900c2e2 | 2020-01-24 18:05:00 +0100 | [diff] [blame] | 1354 | gint16 nSizeElement = (gint16)(gint32)pDescr->value; |
Pau Espin Pedrol | efad80b | 2020-03-23 14:35:26 +0100 | [diff] [blame] | 1355 | guint32 nSizeArray = (guint32)((uintptr_t)pDescr->aux_fn); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1356 | guint8 ElementCount = 0; |
| 1357 | csnStream_t arT = *ar; |
| 1358 | gboolean EndOfList = FALSE; |
| 1359 | gint16 Status; |
| 1360 | pui8 = pui8DATA(data, pDescr->offset); |
| 1361 | |
| 1362 | do |
| 1363 | { /* get data element */ |
| 1364 | ElementCount++; |
| 1365 | |
Pau Espin Pedrol | efad80b | 2020-03-23 14:35:26 +0100 | [diff] [blame] | 1366 | if (ElementCount > nSizeArray) |
| 1367 | { |
| 1368 | LOGPC(DCSN1, LOGL_ERROR, "error: %s: too many elements (>%u) in recursive array. Increase its size! } |", pDescr->sz, nSizeArray); |
| 1369 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_STREAM_NOT_SUPPORTED, pDescr); |
| 1370 | } |
| 1371 | |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1372 | LOGPC(DCSN1, LOGL_DEBUG, "%s { | ", pDescr->sz); |
Pau Espin Pedrol | f960d5b | 2020-01-23 19:05:00 +0100 | [diff] [blame] | 1373 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1374 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
Alexander Couzens | ccde5c9 | 2017-02-04 03:10:08 +0100 | [diff] [blame] | 1375 | Status = csnStreamDecoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, readIndex, pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1376 | |
| 1377 | if (Status >= 0) |
| 1378 | { /* successful completion */ |
| 1379 | pui8 += nSizeElement; /* -> to next */ |
| 1380 | remaining_bits_len = arT.remaining_bits_len; |
| 1381 | bit_offset = arT.bit_offset; |
| 1382 | } |
| 1383 | else |
| 1384 | { /* something went awry */ |
| 1385 | return Status; |
| 1386 | } |
| 1387 | |
| 1388 | if (remaining_bits_len < 0) |
| 1389 | { |
| 1390 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1391 | } |
| 1392 | |
| 1393 | /* control of next element's tag */ |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1394 | LOGPC(DCSN1, LOGL_DEBUG, "%s } | ", pDescr->sz); |
Alexander Couzens | ccde5c9 | 2017-02-04 03:10:08 +0100 | [diff] [blame] | 1395 | EndOfList = !(existNextElement(vector, readIndex, Tag)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1396 | |
| 1397 | bit_offset++; |
| 1398 | remaining_bits_len--; /* 1 bit consumed (tag) */ |
| 1399 | } while (!EndOfList); |
| 1400 | |
| 1401 | |
| 1402 | /* Store the count of the array */ |
| 1403 | *pui8DATA(data, pDescr->i) = ElementCount; |
| 1404 | Tag = STANDARD_TAG; /* in case it was set to "reversed" */ |
| 1405 | pDescr++; |
| 1406 | break; |
| 1407 | } |
| 1408 | |
| 1409 | case CSN_FIXED: |
| 1410 | { /* Verify the fixed bits */ |
| 1411 | guint8 no_of_bits = (guint8) pDescr->i; |
| 1412 | guint32 ui32; |
| 1413 | |
| 1414 | if (no_of_bits <= 32) |
| 1415 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1416 | ui32 = bitvec_read_field(vector, readIndex, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1417 | } |
| 1418 | else |
| 1419 | { |
| 1420 | return ProcessError(readIndex,"no_of_bits > 32", -1, pDescr); |
| 1421 | } |
| 1422 | if (ui32 != (unsigned)(gint32)pDescr->offset) |
| 1423 | { |
| 1424 | return ProcessError(readIndex,"csnStreamDecoder FIXED value does not match", -1, pDescr); |
| 1425 | } |
| 1426 | |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1427 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned int)ui32); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1428 | remaining_bits_len -= no_of_bits; |
| 1429 | bit_offset += no_of_bits; |
| 1430 | pDescr++; |
| 1431 | break; |
| 1432 | } |
| 1433 | |
| 1434 | case CSN_CALLBACK: |
| 1435 | { |
Pau Espin Pedrol | f3ac06b | 2020-03-26 18:13:19 +0100 | [diff] [blame] | 1436 | guint16 no_of_bits; |
| 1437 | DissectorCallbackFcn_t callback = (DissectorCallbackFcn_t)pDescr->aux_fn; |
| 1438 | LOGPC(DCSN1, LOGL_DEBUG, "CSN_CALLBACK(%s) | ", pDescr->sz); |
| 1439 | no_of_bits = callback(vector, readIndex, pvDATA(data, pDescr->i), pvDATA(data, pDescr->offset)); |
| 1440 | remaining_bits_len -= no_of_bits; |
| 1441 | bit_offset += no_of_bits; |
| 1442 | pDescr++; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1443 | break; |
| 1444 | } |
| 1445 | |
| 1446 | case CSN_TRAP_ERROR: |
| 1447 | { |
| 1448 | return ProcessError(readIndex,"csnStreamDecoder", pDescr->i, pDescr); |
| 1449 | } |
| 1450 | |
| 1451 | case CSN_END: |
| 1452 | { |
| 1453 | ar->remaining_bits_len = remaining_bits_len; |
| 1454 | ar->bit_offset = bit_offset; |
| 1455 | return remaining_bits_len; |
| 1456 | } |
| 1457 | |
| 1458 | default: |
| 1459 | { |
| 1460 | assert(0); |
| 1461 | } |
| 1462 | |
| 1463 | |
| 1464 | } |
| 1465 | |
| 1466 | } while (remaining_bits_len >= 0); |
| 1467 | |
| 1468 | return ProcessError(readIndex,"csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1469 | } |
| 1470 | |
| 1471 | |
| 1472 | |
| 1473 | |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1474 | gint16 csnStreamEncoder(csnStream_t* ar, const CSN_DESCR* pDescr, struct bitvec *vector, unsigned *writeIndex, void* data) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1475 | { |
| 1476 | gint remaining_bits_len = ar->remaining_bits_len; |
| 1477 | gint bit_offset = ar->bit_offset; |
| 1478 | guint8* pui8; |
| 1479 | guint16* pui16; |
| 1480 | guint32* pui32; |
| 1481 | guint64* pui64; |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1482 | unsigned ib; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1483 | |
| 1484 | guint8 Tag = STANDARD_TAG; |
| 1485 | |
Vadim Yanitskiy | 29aeb90 | 2020-03-06 08:53:36 +0700 | [diff] [blame] | 1486 | if (remaining_bits_len < 0) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1487 | { |
Vadim Yanitskiy | 29aeb90 | 2020-03-06 08:53:36 +0700 | [diff] [blame] | 1488 | return ProcessError(writeIndex, __func__, CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1489 | } |
| 1490 | |
| 1491 | do |
| 1492 | { |
| 1493 | switch (pDescr->type) |
| 1494 | { |
| 1495 | case CSN_BIT: |
| 1496 | { |
| 1497 | if (remaining_bits_len > 0) |
| 1498 | { |
| 1499 | pui8 = pui8DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1500 | bitvec_write_field(vector, writeIndex, *pui8, 1); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1501 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1502 | /* end add the bit value to protocol tree */ |
| 1503 | } |
Pau Espin Pedrol | 16705a4 | 2020-10-27 10:24:57 +0100 | [diff] [blame] | 1504 | else if (pDescr->may_be_null) |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 1505 | { |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1506 | LOGPC(DCSN1, LOGL_DEBUG, "%s = NULL | ", pDescr->sz); |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 1507 | } |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1508 | else |
| 1509 | { |
| 1510 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1511 | } |
| 1512 | |
| 1513 | pDescr++; |
| 1514 | remaining_bits_len--; |
| 1515 | bit_offset++; |
| 1516 | break; |
| 1517 | } |
| 1518 | |
| 1519 | case CSN_NULL: |
| 1520 | { /* Empty member! */ |
| 1521 | pDescr++; |
| 1522 | break; |
| 1523 | } |
| 1524 | |
| 1525 | case CSN_UINT: |
| 1526 | { |
| 1527 | guint8 no_of_bits = (guint8) pDescr->i; |
| 1528 | |
| 1529 | if (remaining_bits_len >= no_of_bits) |
| 1530 | { |
| 1531 | if (no_of_bits <= 8) |
| 1532 | { |
| 1533 | pui8 = pui8DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1534 | bitvec_write_field(vector, writeIndex, *pui8, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1535 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1536 | } |
| 1537 | else if (no_of_bits <= 16) |
| 1538 | { |
| 1539 | pui16 = pui16DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1540 | bitvec_write_field(vector, writeIndex, *pui16, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1541 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , *pui16); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1542 | } |
| 1543 | else if (no_of_bits <= 32) |
| 1544 | { |
| 1545 | pui32 = pui32DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1546 | bitvec_write_field(vector, writeIndex, *pui32, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1547 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , *pui32); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1548 | } |
| 1549 | else |
| 1550 | { |
| 1551 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 1552 | } |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 1553 | |
| 1554 | remaining_bits_len -= no_of_bits; |
| 1555 | bit_offset += no_of_bits; |
| 1556 | } |
Pau Espin Pedrol | 16705a4 | 2020-10-27 10:24:57 +0100 | [diff] [blame] | 1557 | else if (pDescr->may_be_null) |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 1558 | { |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1559 | LOGPC(DCSN1, LOGL_DEBUG, "%s = NULL | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1560 | } |
| 1561 | else |
| 1562 | { |
| 1563 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1564 | } |
| 1565 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1566 | pDescr++; |
| 1567 | break; |
| 1568 | } |
| 1569 | |
| 1570 | case CSN_UINT_OFFSET: |
| 1571 | { |
| 1572 | guint8 no_of_bits = (guint8) pDescr->i; |
| 1573 | |
| 1574 | if (remaining_bits_len >= no_of_bits) |
| 1575 | { |
| 1576 | if (no_of_bits <= 8) |
| 1577 | { |
| 1578 | pui8 = pui8DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1579 | bitvec_write_field(vector, writeIndex, *pui8 - (guint8)pDescr->descr.value, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1580 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)(*pui8 - (guint8)pDescr->descr.value)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1581 | } |
| 1582 | else if (no_of_bits <= 16) |
| 1583 | { |
| 1584 | pui16 = pui16DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1585 | bitvec_write_field(vector, writeIndex, *pui16 - (guint16)pDescr->descr.value, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1586 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned short)(*pui16 - (guint16)pDescr->descr.value)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1587 | } |
| 1588 | else if (no_of_bits <= 32) |
| 1589 | { |
| 1590 | pui32 = pui32DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1591 | bitvec_write_field(vector, writeIndex, *pui32 - (guint16)pDescr->descr.value, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1592 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned int)(*pui32 - (guint16)pDescr->descr.value)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1593 | } |
| 1594 | else |
| 1595 | { |
| 1596 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 1597 | } |
| 1598 | } |
| 1599 | else |
| 1600 | { |
| 1601 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1602 | } |
| 1603 | |
| 1604 | remaining_bits_len -= no_of_bits; |
| 1605 | bit_offset += no_of_bits; |
| 1606 | pDescr++; |
| 1607 | break; |
| 1608 | } |
| 1609 | |
| 1610 | case CSN_UINT_LH: |
| 1611 | { |
| 1612 | guint8 no_of_bits = (guint8) pDescr->i; |
| 1613 | |
| 1614 | if (remaining_bits_len >= no_of_bits) |
| 1615 | { |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1616 | if (no_of_bits <= 8) |
| 1617 | { |
| 1618 | pui8 = pui8DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1619 | bitvec_write_field(vector, writeIndex, *pui8, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1620 | // TODO : Change get_masked_bits8() |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1621 | *writeIndex -= no_of_bits; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1622 | guint8 ui8 = get_masked_bits8(vector, writeIndex, bit_offset, no_of_bits); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1623 | *writeIndex -= no_of_bits; |
| 1624 | bitvec_write_field(vector, writeIndex, ui8, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1625 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1626 | |
| 1627 | } |
| 1628 | else |
| 1629 | {/* Maybe we should support more than 8 bits ? */ |
| 1630 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 1631 | } |
| 1632 | } |
| 1633 | else |
| 1634 | { |
| 1635 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1636 | } |
| 1637 | |
| 1638 | remaining_bits_len -= no_of_bits; |
| 1639 | bit_offset += no_of_bits; |
| 1640 | pDescr++; |
| 1641 | break; |
| 1642 | } |
| 1643 | |
| 1644 | case CSN_UINT_ARRAY: |
| 1645 | { |
| 1646 | guint8 no_of_bits = (guint8) pDescr->i; |
| 1647 | guint16 nCount = (guint16)pDescr->descr.value; /* nCount supplied by value i.e. M_UINT_ARRAY(...) */ |
| 1648 | |
Pau Espin Pedrol | 900c2e2 | 2020-01-24 18:05:00 +0100 | [diff] [blame] | 1649 | if (pDescr->value != 0) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1650 | { /* nCount specified by a reference to field holding value i.e. M_VAR_UINT_ARRAY(...) */ |
| 1651 | nCount = *pui16DATA(data, nCount); |
| 1652 | } |
| 1653 | |
Pau Espin Pedrol | f5e275a | 2020-03-26 19:54:29 +0100 | [diff] [blame] | 1654 | if (remaining_bits_len >= (no_of_bits * nCount)) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1655 | { |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1656 | if (no_of_bits <= 8) |
| 1657 | { |
| 1658 | pui8 = pui8DATA(data, pDescr->offset); |
| 1659 | do |
| 1660 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1661 | bitvec_write_field(vector, writeIndex, *pui8, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1662 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1663 | pui8++; |
Jeff Morriss | c0b4f4a | 2020-01-24 15:00:58 +0100 | [diff] [blame] | 1664 | remaining_bits_len -= no_of_bits; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1665 | bit_offset += no_of_bits; |
| 1666 | } while (--nCount > 0); |
| 1667 | } |
| 1668 | else if (no_of_bits <= 16) |
| 1669 | { |
| 1670 | return ProcessError(writeIndex,"csnStreamEncoder NOTIMPLEMENTED", 999, pDescr); |
| 1671 | } |
| 1672 | else if (no_of_bits <= 32) |
| 1673 | { |
| 1674 | return ProcessError(writeIndex,"csnStreamEncoder NOTIMPLEMENTED", 999, pDescr); |
| 1675 | } |
| 1676 | else |
| 1677 | { |
| 1678 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 1679 | } |
| 1680 | } |
| 1681 | else |
| 1682 | { |
| 1683 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1684 | } |
| 1685 | pDescr++; |
| 1686 | break; |
| 1687 | } |
| 1688 | |
| 1689 | case CSN_VARIABLE_TARRAY_OFFSET: |
| 1690 | case CSN_VARIABLE_TARRAY: |
| 1691 | case CSN_TYPE_ARRAY: |
| 1692 | { |
| 1693 | gint16 Status; |
| 1694 | csnStream_t arT = *ar; |
| 1695 | gint16 nCount = pDescr->i; |
Pau Espin Pedrol | 900c2e2 | 2020-01-24 18:05:00 +0100 | [diff] [blame] | 1696 | guint16 nSize = (guint16)(gint32)pDescr->value; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1697 | |
| 1698 | pui8 = pui8DATA(data, pDescr->offset); |
| 1699 | if (pDescr->type == CSN_VARIABLE_TARRAY) |
| 1700 | { /* Count specified in field */ |
| 1701 | nCount = *pui8DATA(data, pDescr->i); |
| 1702 | } |
| 1703 | else if (pDescr->type == CSN_VARIABLE_TARRAY_OFFSET) |
| 1704 | { /* Count specified in field */ |
| 1705 | nCount = *pui8DATA(data, pDescr->i); |
| 1706 | /* nCount--; the 1 offset is already taken into account in CSN_UINT_OFFSET */ |
| 1707 | } |
| 1708 | |
| 1709 | while (nCount > 0) |
| 1710 | { /* resulting array of length 0 is possible |
| 1711 | * but no bits shall be read from bitstream |
| 1712 | */ |
| 1713 | |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1714 | LOGPC(DCSN1, LOGL_DEBUG, "%s : | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1715 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 1716 | Status = csnStreamEncoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, writeIndex, pui8); |
| 1717 | if (Status >= 0) |
| 1718 | { |
| 1719 | pui8 += nSize; |
| 1720 | remaining_bits_len = arT.remaining_bits_len; |
| 1721 | bit_offset = arT.bit_offset; |
| 1722 | |
| 1723 | } |
| 1724 | else |
| 1725 | { |
| 1726 | return Status; |
| 1727 | } |
| 1728 | nCount--; |
| 1729 | } |
| 1730 | |
| 1731 | pDescr++; |
| 1732 | break; |
| 1733 | } |
| 1734 | |
| 1735 | case CSN_BITMAP: |
| 1736 | { /* bitmap with given length. The result is left aligned! */ |
| 1737 | guint8 no_of_bits = (guint8) pDescr->i; /* length of bitmap */ |
| 1738 | |
| 1739 | if (no_of_bits > 0) |
| 1740 | { |
Pau Espin Pedrol | c8280a5 | 2020-03-26 20:29:53 +0100 | [diff] [blame] | 1741 | if (no_of_bits > remaining_bits_len) |
| 1742 | { |
| 1743 | return ProcessError(writeIndex, "csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 1744 | } |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1745 | |
| 1746 | if (no_of_bits <= 32) |
| 1747 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1748 | for(ib = 0; ib < 4; ib++) |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 1749 | { |
| 1750 | pui8 = pui8DATA(data, pDescr->offset+ib); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1751 | bitvec_write_field(vector, writeIndex, *pui8, 8); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1752 | LOGPC(DCSN1, LOGL_DEBUG, "%s[%u] = %u | ", pDescr->sz , ib, (unsigned)*pui8); |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 1753 | } |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1754 | } |
| 1755 | else if (no_of_bits <= 64) |
| 1756 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1757 | for(ib = 0; ib < 8; ib++) |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 1758 | { |
| 1759 | pui8 = pui8DATA(data, pDescr->offset+ib); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1760 | bitvec_write_field(vector, writeIndex, *pui8, 8); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1761 | LOGPC(DCSN1, LOGL_DEBUG, "%s[%u] = %u | ", pDescr->sz , ib, (unsigned)*pui8); |
Ivan Kluchnikov | 74b459f | 2012-04-11 22:02:15 +0400 | [diff] [blame] | 1762 | } |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1763 | } |
| 1764 | else |
| 1765 | { |
| 1766 | return ProcessError(writeIndex,"csnStreamEncoder NOT IMPLEMENTED", 999, pDescr); |
| 1767 | } |
| 1768 | |
| 1769 | remaining_bits_len -= no_of_bits; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1770 | bit_offset += no_of_bits; |
| 1771 | } |
| 1772 | /* bitmap was successfully extracted or it was empty */ |
| 1773 | |
| 1774 | pDescr++; |
| 1775 | break; |
| 1776 | } |
| 1777 | |
| 1778 | case CSN_TYPE: |
| 1779 | { |
| 1780 | gint16 Status; |
| 1781 | csnStream_t arT = *ar; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1782 | LOGPC(DCSN1, LOGL_DEBUG, " : %s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1783 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 1784 | Status = csnStreamEncoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, writeIndex, pvDATA(data, pDescr->offset)); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1785 | LOGPC(DCSN1, LOGL_DEBUG, " : End %s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1786 | if (Status >= 0) |
| 1787 | { |
| 1788 | |
| 1789 | remaining_bits_len = arT.remaining_bits_len; |
| 1790 | bit_offset = arT.bit_offset; |
| 1791 | pDescr++; |
| 1792 | } |
| 1793 | else |
| 1794 | { |
| 1795 | /* Has already been processed: ProcessError("csnStreamEncoder", Status, pDescr); */ |
| 1796 | return Status; |
| 1797 | } |
| 1798 | |
| 1799 | break; |
| 1800 | } |
| 1801 | |
| 1802 | case CSN_CHOICE: |
| 1803 | { |
Vadim Yanitskiy | fac8332 | 2020-05-23 17:33:07 +0700 | [diff] [blame] | 1804 | gint16 count = pDescr->i; |
Anders Broman | 60bf845 | 2020-01-24 17:35:48 +0100 | [diff] [blame] | 1805 | const CSN_ChoiceElement_t* pChoice = (const CSN_ChoiceElement_t*) pDescr->descr.ptr; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1806 | |
Vadim Yanitskiy | fac8332 | 2020-05-23 17:33:07 +0700 | [diff] [blame] | 1807 | /* Make sure that the list of choice items is not empty */ |
| 1808 | if (!count) |
| 1809 | return ProcessError(writeIndex, "csnStreamEncoder", CSN_ERROR_IN_SCRIPT, pDescr); |
| 1810 | else if (count > 255) /* We can handle up to 256 (UCHAR_MAX) selectors */ |
| 1811 | return ProcessError(writeIndex, "csnStreamEncoder", CSN_ERROR_IN_SCRIPT, pDescr); |
| 1812 | |
Vadim Yanitskiy | 0614e93 | 2020-05-23 17:43:45 +0700 | [diff] [blame] | 1813 | /* Make sure that choice index is not out of range */ |
| 1814 | pui8 = pui8DATA(data, pDescr->offset); |
| 1815 | if (*pui8 >= count) |
| 1816 | return ProcessError(writeIndex, "csnStreamEncoder", CSN_ERROR_INVALID_UNION_INDEX, pDescr); |
| 1817 | |
| 1818 | pChoice += *pui8; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1819 | guint8 no_of_bits = pChoice->bits; |
| 1820 | guint8 value = pChoice->value; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1821 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pChoice->descr.sz , (unsigned)value); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1822 | bitvec_write_field(vector, writeIndex, value, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1823 | |
| 1824 | CSN_DESCR descr[2]; |
| 1825 | gint16 Status; |
| 1826 | csnStream_t arT = *ar; |
| 1827 | |
| 1828 | descr[0] = pChoice->descr; |
| 1829 | memset(&descr[1], 0x00, sizeof(CSN_DESCR)); |
| 1830 | descr[1].type = CSN_END; |
| 1831 | bit_offset += no_of_bits; |
| 1832 | remaining_bits_len -= no_of_bits; |
| 1833 | |
| 1834 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 1835 | Status = csnStreamEncoder(&arT, descr, vector, writeIndex, data); |
| 1836 | |
| 1837 | if (Status >= 0) |
| 1838 | { |
| 1839 | remaining_bits_len = arT.remaining_bits_len; |
| 1840 | bit_offset = arT.bit_offset; |
| 1841 | } |
| 1842 | else |
| 1843 | { |
| 1844 | return Status; |
| 1845 | } |
| 1846 | |
| 1847 | pDescr++; |
| 1848 | break; |
| 1849 | } |
| 1850 | |
| 1851 | case CSN_SERIALIZE: |
| 1852 | { |
Pau Espin Pedrol | 5b71697 | 2020-01-24 17:24:01 +0100 | [diff] [blame] | 1853 | StreamSerializeFcn_t serialize = (StreamSerializeFcn_t)pDescr->aux_fn; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1854 | csnStream_t arT = *ar; |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 1855 | guint8 length_len = pDescr->i; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1856 | gint16 Status = -1; |
Ivan Kluchnikov | 9b06ff0 | 2012-06-15 10:13:30 +0400 | [diff] [blame] | 1857 | unsigned lengthIndex; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1858 | |
| 1859 | // store writeIndex for length value (7 bit) |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1860 | lengthIndex = *writeIndex; |
| 1861 | *writeIndex += length_len; |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 1862 | bit_offset += length_len; |
| 1863 | remaining_bits_len -= length_len; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1864 | arT.direction = 0; |
| 1865 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 1866 | Status = serialize(&arT, vector, writeIndex, pvDATA(data, pDescr->offset)); |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 1867 | |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1868 | bitvec_write_field(vector, &lengthIndex, *writeIndex - lengthIndex - length_len, length_len); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1869 | LOGPC(DCSN1, LOGL_DEBUG, "%s length = %u | ", pDescr->sz , (unsigned)(*writeIndex - lengthIndex)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1870 | |
| 1871 | if (Status >= 0) |
| 1872 | { |
| 1873 | remaining_bits_len = arT.remaining_bits_len; |
| 1874 | bit_offset = arT.bit_offset; |
| 1875 | pDescr++; |
| 1876 | } |
| 1877 | else |
| 1878 | { |
Pau Espin Pedrol | f960d5b | 2020-01-23 19:05:00 +0100 | [diff] [blame] | 1879 | // Has already been processed: |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1880 | return Status; |
| 1881 | } |
| 1882 | |
| 1883 | break; |
| 1884 | } |
| 1885 | |
| 1886 | case CSN_UNION_LH: |
| 1887 | case CSN_UNION: |
| 1888 | { |
| 1889 | gint16 Bits; |
| 1890 | guint8 index; |
| 1891 | gint16 count = pDescr->i; |
| 1892 | const CSN_DESCR* pDescrNext = pDescr; |
| 1893 | |
| 1894 | pDescrNext += count + 1; /* now this is next after the union */ |
| 1895 | if ((count <= 0) || (count > 16)) |
| 1896 | { |
| 1897 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_INVALID_UNION_INDEX, pDescr); |
| 1898 | } |
| 1899 | |
| 1900 | /* Now get the bits to extract the index */ |
| 1901 | Bits = ixBitsTab[count]; |
| 1902 | index = 0; |
| 1903 | |
| 1904 | /* Assign UnionType */ |
| 1905 | pui8 = pui8DATA(data, pDescr->offset); |
| 1906 | //read index from data and write to vector |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1907 | bitvec_write_field(vector, writeIndex, *pui8, Bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1908 | |
Pau Espin Pedrol | f960d5b | 2020-01-23 19:05:00 +0100 | [diff] [blame] | 1909 | //decode index |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1910 | *writeIndex -= Bits; |
Pau Espin Pedrol | f960d5b | 2020-01-23 19:05:00 +0100 | [diff] [blame] | 1911 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1912 | while (Bits > 0) |
| 1913 | { |
| 1914 | index <<= 1; |
| 1915 | |
| 1916 | if (CSN_UNION_LH == pDescr->type) |
| 1917 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1918 | index |= get_masked_bits8(vector, writeIndex, bit_offset, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1919 | } |
| 1920 | else |
| 1921 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1922 | index |= bitvec_read_field(vector, writeIndex, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1923 | } |
| 1924 | |
| 1925 | remaining_bits_len--; |
| 1926 | bit_offset++; |
| 1927 | Bits--; |
| 1928 | } |
| 1929 | |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1930 | *writeIndex -= Bits; |
| 1931 | bitvec_write_field(vector, writeIndex, index, Bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1932 | |
| 1933 | |
| 1934 | /* script index to continue on, limited in case we do not have a power of 2 */ |
| 1935 | pDescr += (MIN(index + 1, count)); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1936 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)index); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1937 | |
| 1938 | switch (pDescr->type) |
| 1939 | { /* get the right element of the union based on computed index */ |
| 1940 | |
| 1941 | case CSN_BIT: |
| 1942 | { |
| 1943 | pui8 = pui8DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1944 | bitvec_write_field(vector, writeIndex, *pui8, 1); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1945 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Jeff Morriss | c0b4f4a | 2020-01-24 15:00:58 +0100 | [diff] [blame] | 1946 | remaining_bits_len--; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1947 | bit_offset++; |
| 1948 | pDescr++; |
| 1949 | break; |
| 1950 | } |
| 1951 | |
| 1952 | case CSN_NULL: |
| 1953 | { /* Empty member! */ |
| 1954 | pDescr++; |
| 1955 | break; |
| 1956 | } |
| 1957 | |
| 1958 | case CSN_UINT: |
| 1959 | { |
| 1960 | guint8 no_of_bits = (guint8) pDescr->i; |
| 1961 | if (remaining_bits_len >= no_of_bits) |
| 1962 | { |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1963 | if (no_of_bits <= 8) |
| 1964 | { |
| 1965 | pui8 = pui8DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1966 | bitvec_write_field(vector, writeIndex, *pui8, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1967 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1968 | } |
| 1969 | else if (no_of_bits <= 16) |
| 1970 | { |
| 1971 | pui16 = pui16DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1972 | bitvec_write_field(vector, writeIndex, *pui16, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1973 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , *pui16); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1974 | } |
| 1975 | else if (no_of_bits <= 32) |
| 1976 | { |
| 1977 | pui32 = pui32DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 1978 | bitvec_write_field(vector, writeIndex, *pui32, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 1979 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , *pui32); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1980 | } |
| 1981 | else |
| 1982 | { |
| 1983 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 1984 | } |
| 1985 | } |
| 1986 | else |
| 1987 | { |
| 1988 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 1989 | } |
| 1990 | |
Jeff Morriss | c0b4f4a | 2020-01-24 15:00:58 +0100 | [diff] [blame] | 1991 | remaining_bits_len -= no_of_bits; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 1992 | bit_offset += no_of_bits; |
| 1993 | pDescr++; |
| 1994 | break; |
| 1995 | } |
| 1996 | |
| 1997 | case CSN_UINT_OFFSET: |
| 1998 | { |
| 1999 | guint8 no_of_bits = (guint8) pDescr->i; |
| 2000 | |
| 2001 | if (remaining_bits_len >= no_of_bits) |
| 2002 | { |
| 2003 | if (no_of_bits <= 8) |
| 2004 | { |
| 2005 | pui8 = pui8DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2006 | bitvec_write_field(vector, writeIndex, *pui8 - (guint8)pDescr->descr.value, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2007 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)(*pui8 - (guint8)pDescr->descr.value)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2008 | } |
| 2009 | else if (no_of_bits <= 16) |
| 2010 | { |
| 2011 | pui16 = pui16DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2012 | bitvec_write_field(vector, writeIndex, *pui16 - (guint16)pDescr->descr.value, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2013 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned short)(*pui16 - (guint16)pDescr->descr.value)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2014 | } |
| 2015 | else if (no_of_bits <= 32) |
| 2016 | { |
| 2017 | pui32 = pui32DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2018 | bitvec_write_field(vector, writeIndex, *pui32 - (guint16)pDescr->descr.value, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2019 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned int)(*pui32 - (guint16)pDescr->descr.value)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2020 | } |
| 2021 | else |
| 2022 | { |
| 2023 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 2024 | } |
| 2025 | } |
| 2026 | else |
| 2027 | { |
| 2028 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2029 | } |
| 2030 | |
| 2031 | remaining_bits_len -= no_of_bits; |
| 2032 | bit_offset += no_of_bits; |
| 2033 | pDescr++; |
| 2034 | break; |
| 2035 | } |
| 2036 | |
| 2037 | case CSN_UINT_LH: |
| 2038 | { |
| 2039 | guint8 no_of_bits = (guint8) pDescr->i; |
| 2040 | |
| 2041 | if (remaining_bits_len >= no_of_bits) |
| 2042 | { |
| 2043 | remaining_bits_len -= no_of_bits; |
| 2044 | if (no_of_bits <= 8) |
| 2045 | { |
| 2046 | pui8 = pui8DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2047 | bitvec_write_field(vector, writeIndex, *pui8, no_of_bits); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2048 | // TODO : Change get_masked_bits8() |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2049 | *writeIndex -= no_of_bits; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2050 | guint8 ui8 = get_masked_bits8(vector, writeIndex, bit_offset, no_of_bits); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2051 | *writeIndex -= no_of_bits; |
| 2052 | bitvec_write_field(vector, writeIndex, ui8, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2053 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2054 | |
| 2055 | } |
| 2056 | else |
| 2057 | {/* Maybe we should support more than 8 bits ? */ |
| 2058 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 2059 | } |
| 2060 | } |
| 2061 | else |
| 2062 | { |
| 2063 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2064 | } |
| 2065 | |
| 2066 | remaining_bits_len -= no_of_bits; |
| 2067 | bit_offset += no_of_bits; |
| 2068 | pDescr++; |
| 2069 | break; |
| 2070 | } |
| 2071 | |
| 2072 | case CSN_UINT_ARRAY: |
| 2073 | { |
| 2074 | guint8 no_of_bits = (guint8) pDescr->i; |
| 2075 | guint16 nCount = (guint16)pDescr->descr.value; /* nCount supplied by value i.e. M_UINT_ARRAY(...) */ |
| 2076 | |
Pau Espin Pedrol | 900c2e2 | 2020-01-24 18:05:00 +0100 | [diff] [blame] | 2077 | if (pDescr->value != 0) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2078 | { /* nCount specified by a reference to field holding value i.e. M_VAR_UINT_ARRAY(...) */ |
| 2079 | nCount = *pui16DATA(data, nCount); |
| 2080 | } |
| 2081 | |
Pau Espin Pedrol | f5e275a | 2020-03-26 19:54:29 +0100 | [diff] [blame] | 2082 | if (remaining_bits_len >= (no_of_bits * nCount)) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2083 | { |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2084 | if (no_of_bits <= 8) |
| 2085 | { |
| 2086 | pui8 = pui8DATA(data, pDescr->offset); |
| 2087 | do |
| 2088 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2089 | bitvec_write_field(vector, writeIndex, *pui8, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2090 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2091 | pui8++; |
Jeff Morriss | c0b4f4a | 2020-01-24 15:00:58 +0100 | [diff] [blame] | 2092 | remaining_bits_len -= no_of_bits; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2093 | bit_offset += no_of_bits; |
| 2094 | } while (--nCount > 0); |
| 2095 | } |
| 2096 | else if (no_of_bits <= 16) |
| 2097 | { |
| 2098 | return ProcessError(writeIndex,"csnStreamEncoder NOTIMPLEMENTED", 999, pDescr); |
| 2099 | } |
| 2100 | else if (no_of_bits <= 32) |
| 2101 | { |
| 2102 | return ProcessError(writeIndex,"csnStreamEncoder NOTIMPLEMENTED", 999, pDescr); |
| 2103 | } |
| 2104 | else |
| 2105 | { |
| 2106 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_GENERAL, pDescr); |
| 2107 | } |
| 2108 | } |
| 2109 | else |
| 2110 | { |
| 2111 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2112 | } |
| 2113 | pDescr++; |
| 2114 | break; |
| 2115 | } |
| 2116 | |
| 2117 | case CSN_VARIABLE_TARRAY_OFFSET: |
| 2118 | case CSN_VARIABLE_TARRAY: |
| 2119 | case CSN_TYPE_ARRAY: |
| 2120 | { |
| 2121 | gint16 Status; |
| 2122 | csnStream_t arT = *ar; |
| 2123 | gint16 nCount = pDescr->i; |
Pau Espin Pedrol | 900c2e2 | 2020-01-24 18:05:00 +0100 | [diff] [blame] | 2124 | guint16 nSize = (guint16)(gint32)pDescr->value; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2125 | |
| 2126 | pui8 = pui8DATA(data, pDescr->offset); |
| 2127 | if (pDescr->type == CSN_VARIABLE_TARRAY) |
| 2128 | { /* Count specified in field */ |
| 2129 | nCount = *pui8DATA(data, pDescr->i); |
| 2130 | } |
| 2131 | else if (pDescr->type == CSN_VARIABLE_TARRAY_OFFSET) |
| 2132 | { /* Count specified in field */ |
| 2133 | nCount = *pui8DATA(data, pDescr->i); |
| 2134 | /* nCount--; the 1 offset is already taken into account in CSN_UINT_OFFSET */ |
| 2135 | } |
| 2136 | |
| 2137 | while (nCount > 0) |
| 2138 | { /* resulting array of length 0 is possible |
| 2139 | * but no bits shall be read from bitstream |
| 2140 | */ |
| 2141 | |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2142 | LOGPC(DCSN1, LOGL_DEBUG, "%s : | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2143 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 2144 | Status = csnStreamEncoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, writeIndex, pui8); |
| 2145 | if (Status >= 0) |
| 2146 | { |
| 2147 | pui8 += nSize; |
| 2148 | remaining_bits_len = arT.remaining_bits_len; |
| 2149 | bit_offset = arT.bit_offset; |
| 2150 | } |
| 2151 | else |
| 2152 | { |
| 2153 | return Status; |
| 2154 | } |
| 2155 | nCount--; |
| 2156 | } |
| 2157 | |
| 2158 | pDescr++; |
| 2159 | break; |
| 2160 | } |
| 2161 | |
| 2162 | case CSN_BITMAP: |
| 2163 | { /* bitmap with given length. The result is left aligned! */ |
| 2164 | guint8 no_of_bits = (guint8) pDescr->i; /* length of bitmap */ |
| 2165 | |
| 2166 | if (no_of_bits > 0) |
| 2167 | { |
Pau Espin Pedrol | c8280a5 | 2020-03-26 20:29:53 +0100 | [diff] [blame] | 2168 | if (no_of_bits > remaining_bits_len) |
| 2169 | { |
| 2170 | return ProcessError(writeIndex, "csnStreamDecoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2171 | } |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2172 | |
| 2173 | if (no_of_bits <= 32) |
| 2174 | { |
| 2175 | pui32 = pui32DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2176 | bitvec_write_field(vector, writeIndex, *pui32, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2177 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , *pui32); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2178 | } |
| 2179 | else if (no_of_bits <= 64) |
| 2180 | { |
| 2181 | pui64 = pui64DATA(data, pDescr->offset); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2182 | bitvec_write_field(vector, writeIndex, *pui64, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2183 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %lu | ", pDescr->sz , *pui64); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2184 | } |
| 2185 | else |
| 2186 | { |
| 2187 | return ProcessError(writeIndex,"csnStreamEncoder NOT IMPLEMENTED", 999, pDescr); |
| 2188 | } |
| 2189 | |
| 2190 | remaining_bits_len -= no_of_bits; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2191 | bit_offset += no_of_bits; |
| 2192 | } |
| 2193 | /* bitmap was successfully extracted or it was empty */ |
| 2194 | |
| 2195 | pDescr++; |
| 2196 | break; |
| 2197 | } |
| 2198 | |
| 2199 | case CSN_TYPE: |
| 2200 | { |
| 2201 | gint16 Status; |
| 2202 | csnStream_t arT = *ar; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2203 | LOGPC(DCSN1, LOGL_DEBUG, " : %s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2204 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
| 2205 | Status = csnStreamEncoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, writeIndex, pvDATA(data, pDescr->offset)); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2206 | LOGPC(DCSN1, LOGL_DEBUG, " : End %s | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2207 | if (Status >= 0) |
| 2208 | { |
| 2209 | remaining_bits_len = arT.remaining_bits_len; |
| 2210 | bit_offset = arT.bit_offset; |
| 2211 | pDescr++; |
| 2212 | } |
| 2213 | else |
| 2214 | { |
| 2215 | /* Has already been processed: ProcessError("csnStreamEncoder", Status, pDescr); */ |
| 2216 | return Status; |
| 2217 | } |
| 2218 | |
| 2219 | break; |
| 2220 | } |
| 2221 | |
| 2222 | default: |
| 2223 | { /* descriptions of union elements other than above are illegal */ |
| 2224 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_IN_SCRIPT, pDescr); |
| 2225 | } |
| 2226 | } |
| 2227 | |
| 2228 | pDescr = pDescrNext; |
| 2229 | break; |
| 2230 | } |
| 2231 | |
| 2232 | case CSN_EXIST: |
| 2233 | case CSN_EXIST_LH: |
| 2234 | { |
| 2235 | guint8 fExist; |
| 2236 | unsigned exist = 0; |
| 2237 | pui8 = pui8DATA(data, pDescr->offset); |
| 2238 | exist = *pui8; |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2239 | bitvec_write_field(vector, writeIndex, *pui8, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2240 | writeIndex--; |
| 2241 | if (CSN_EXIST_LH == pDescr->type) |
| 2242 | { |
| 2243 | fExist = get_masked_bits8(vector, writeIndex, bit_offset, 1); |
| 2244 | } |
| 2245 | else |
| 2246 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2247 | fExist = bitvec_read_field(vector, writeIndex, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2248 | } |
| 2249 | writeIndex--; |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2250 | bitvec_write_field(vector, writeIndex, fExist, 1); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2251 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz, (unsigned)fExist); |
Jeff Morriss | c0b4f4a | 2020-01-24 15:00:58 +0100 | [diff] [blame] | 2252 | remaining_bits_len--; |
| 2253 | bit_offset++; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2254 | pDescr++; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2255 | |
| 2256 | if (!exist) |
| 2257 | { |
| 2258 | ar->remaining_bits_len = remaining_bits_len; |
| 2259 | ar->bit_offset = bit_offset; |
| 2260 | return remaining_bits_len; |
| 2261 | } |
| 2262 | break; |
| 2263 | } |
| 2264 | |
| 2265 | case CSN_NEXT_EXIST: |
| 2266 | { |
| 2267 | guint8 fExist; |
| 2268 | |
| 2269 | pui8 = pui8DATA(data, pDescr->offset); |
| 2270 | |
| 2271 | /* this if-statement represents the M_NEXT_EXIST_OR_NULL description element */ |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 2272 | if ((pDescr->may_be_null) && (remaining_bits_len == 0)) |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2273 | { /* no more bits to decode is fine here - end of message detected and allowed */ |
| 2274 | |
| 2275 | /* Skip i entries + this entry */ |
| 2276 | pDescr += pDescr->i + 1; |
| 2277 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2278 | break; |
| 2279 | } |
| 2280 | |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2281 | bitvec_write_field(vector, writeIndex, *pui8, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2282 | fExist = *pui8; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2283 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2284 | |
Jeff Morriss | c0b4f4a | 2020-01-24 15:00:58 +0100 | [diff] [blame] | 2285 | remaining_bits_len--; |
| 2286 | bit_offset++; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2287 | |
| 2288 | if (fExist == 0) |
| 2289 | { /* Skip 'i' entries */ |
| 2290 | pDescr += pDescr->i; |
| 2291 | } |
| 2292 | |
| 2293 | pDescr++; |
| 2294 | break; |
| 2295 | } |
| 2296 | |
| 2297 | case CSN_NEXT_EXIST_LH: |
| 2298 | { |
| 2299 | guint8 fExist; |
| 2300 | pui8 = pui8DATA(data, pDescr->offset); |
| 2301 | |
| 2302 | /* this if-statement represents the M_NEXT_EXIST_OR_NULL_LH description element */ |
| 2303 | if ((pDescr->descr.ptr != NULL) && (remaining_bits_len == 0)) |
| 2304 | { /* no more bits to decode is fine here - end of message detected and allowed */ |
| 2305 | |
| 2306 | /* skip 'i' entries + this entry */ |
| 2307 | pDescr += pDescr->i + 1; |
| 2308 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2309 | /* set the data member to "not exist" */ |
| 2310 | //*pui8 = 0; |
| 2311 | break; |
| 2312 | } |
| 2313 | |
| 2314 | /* the "regular" M_NEXT_EXIST_LH description element */ |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2315 | bitvec_write_field(vector, writeIndex, *pui8, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2316 | writeIndex--; |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2317 | fExist = get_masked_bits8(vector, writeIndex, bit_offset, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2318 | writeIndex--; |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2319 | bitvec_write_field(vector, writeIndex, fExist, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2320 | pui8++; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2321 | |
Jeff Morriss | c0b4f4a | 2020-01-24 15:00:58 +0100 | [diff] [blame] | 2322 | remaining_bits_len--; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2323 | bit_offset++; |
| 2324 | |
| 2325 | if (fExist == 0) |
| 2326 | { /* Skip 'i' entries */ |
| 2327 | pDescr += pDescr->i; |
| 2328 | } |
| 2329 | pDescr++; |
| 2330 | |
| 2331 | break; |
| 2332 | } |
| 2333 | |
| 2334 | case CSN_VARIABLE_BITMAP_1: |
| 2335 | { /* Bitmap from here and to the end of message */ |
| 2336 | |
| 2337 | //*pui8DATA(data, (gint16)pDescr->descr.value) = (guint8) remaining_bits_len; /* length of bitmap == remaining bits */ |
| 2338 | |
| 2339 | /*no break - |
| 2340 | * with a length set we have a regular variable length bitmap so we continue */ |
| 2341 | } |
Alexis La Goutte | e36fb5b | 2020-01-24 18:22:35 +0100 | [diff] [blame] | 2342 | /* FALL THROUGH */ |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2343 | case CSN_VARIABLE_BITMAP: |
| 2344 | { /* {CSN_VARIABLE_BITMAP, 0, offsetof(_STRUCT, _ElementCountField), offsetof(_STRUCT, _MEMBER), #_MEMBER} |
| 2345 | * <N: bit (5)> <bitmap: bit(N + offset)> |
| 2346 | * Bit array with length (in bits) specified in parameter (pDescr->descr) |
| 2347 | * The result is right aligned! |
| 2348 | */ |
| 2349 | gint16 no_of_bits = *pui8DATA(data, (gint16)pDescr->descr.value); |
| 2350 | |
| 2351 | no_of_bits += pDescr->i; /* adjusted by offset */ |
| 2352 | |
| 2353 | if (no_of_bits > 0) |
| 2354 | { |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2355 | |
| 2356 | if (remaining_bits_len < 0) |
| 2357 | { |
| 2358 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2359 | } |
| 2360 | |
| 2361 | { /* extract bits */ |
| 2362 | guint8* pui8 = pui8DATA(data, pDescr->offset); |
| 2363 | gint16 nB1 = no_of_bits & 0x07;/* no_of_bits Mod 8 */ |
| 2364 | |
| 2365 | if (nB1 > 0) |
| 2366 | { /* take care of the first byte - it will be right aligned */ |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2367 | bitvec_write_field(vector, writeIndex, *pui8, nB1); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2368 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2369 | pui8++; |
| 2370 | no_of_bits -= nB1; |
| 2371 | bit_offset += nB1; /* (nB1 is no_of_bits Mod 8) */ |
Jeff Morriss | c0b4f4a | 2020-01-24 15:00:58 +0100 | [diff] [blame] | 2372 | remaining_bits_len -= nB1; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2373 | } |
| 2374 | |
| 2375 | /* remaining no_of_bits is a multiple of 8 or 0 */ |
| 2376 | while (no_of_bits > 0) |
| 2377 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2378 | bitvec_write_field(vector, writeIndex, *pui8, 8); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2379 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2380 | pui8++; |
| 2381 | no_of_bits -= 8; |
Jeff Morriss | c0b4f4a | 2020-01-24 15:00:58 +0100 | [diff] [blame] | 2382 | remaining_bits_len -= 8; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2383 | } |
| 2384 | } |
| 2385 | } |
| 2386 | pDescr++; |
| 2387 | break; |
| 2388 | } |
| 2389 | |
| 2390 | case CSN_LEFT_ALIGNED_VAR_BMP_1: |
| 2391 | { /* Bitmap from here and to the end of message */ |
| 2392 | |
| 2393 | //*pui8DATA(data, (gint16)pDescr->descr.value) = (guint8) remaining_bits_len; /* length of bitmap == remaining bits */ |
| 2394 | |
| 2395 | /* no break - |
| 2396 | * with a length set we have a regular left aligned variable length bitmap so we continue |
| 2397 | */ |
| 2398 | } |
Alexis La Goutte | e36fb5b | 2020-01-24 18:22:35 +0100 | [diff] [blame] | 2399 | /* FALL THROUGH */ |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2400 | case CSN_LEFT_ALIGNED_VAR_BMP: |
| 2401 | { /* {CSN_LEFT_ALIGNED_VAR_BMP, _OFFSET, (void*)offsetof(_STRUCT, _ElementCountField), offsetof(_STRUCT, _MEMBER), #_MEMBER} |
| 2402 | * <N: bit (5)> <bitmap: bit(N + offset)> |
| 2403 | * bit array with length (in bits) specified in parameter (pDescr->descr) |
| 2404 | */ |
| 2405 | |
| 2406 | gint16 no_of_bits = *pui8DATA(data, (gint16)pDescr->descr.value);/* Size of bitmap */ |
| 2407 | |
| 2408 | no_of_bits += pDescr->i;/* size adjusted by offset */ |
| 2409 | |
| 2410 | if (no_of_bits > 0) |
| 2411 | { |
| 2412 | remaining_bits_len -= no_of_bits; |
| 2413 | |
| 2414 | if (remaining_bits_len < 0) |
| 2415 | { |
| 2416 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2417 | } |
| 2418 | |
| 2419 | { /* extract bits */ |
| 2420 | guint8* pui8 = pui8DATA(data, pDescr->offset); |
| 2421 | gint16 nB1 = no_of_bits & 0x07;/* no_of_bits Mod 8 */ |
| 2422 | |
| 2423 | while (no_of_bits > 0) |
| 2424 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2425 | bitvec_write_field(vector, writeIndex, *pui8, 8); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2426 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2427 | pui8++; |
| 2428 | no_of_bits -= 8; |
| 2429 | } |
| 2430 | if (nB1 > 0) |
| 2431 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2432 | bitvec_write_field(vector, writeIndex, *pui8, nB1); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2433 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2434 | pui8++; |
| 2435 | no_of_bits -= nB1; |
| 2436 | bit_offset += nB1; /* (nB1 is no_of_bits Mod 8) */ |
| 2437 | } |
| 2438 | } |
| 2439 | |
| 2440 | } |
| 2441 | |
| 2442 | /* bitmap was successfully extracted or it was empty */ |
| 2443 | pDescr++; |
| 2444 | break; |
| 2445 | } |
| 2446 | |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 2447 | case CSN_PADDING_BITS: |
| 2448 | { /* Padding from here and to the end of message */ |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2449 | LOGPC(DCSN1, LOGL_DEBUG, "%s = ", pDescr->sz); |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 2450 | guint8 filler = 0x2b; |
| 2451 | if (remaining_bits_len > 0) |
| 2452 | { |
| 2453 | while (remaining_bits_len > 0) |
| 2454 | { |
| 2455 | guint8 bits_to_handle = remaining_bits_len%8; |
| 2456 | if (bits_to_handle > 0) |
| 2457 | { |
Saurabh Sharan | 656eed5 | 2016-03-10 14:15:29 +0530 | [diff] [blame] | 2458 | /* section 11 of 44.060 |
| 2459 | * The padding bits may be the 'null' string. Otherwise, the |
| 2460 | * padding bits starts with bit '0', followed by 'spare padding' |
| 2461 | * < padding bits > ::= { null | 0 < spare padding > ! < Ignore : 1 bit** = < no string > > } ; |
| 2462 | */ |
| 2463 | guint8 fl = filler&(0xff>>(8-bits_to_handle + 1)); |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2464 | bitvec_write_field(vector, writeIndex, fl, bits_to_handle); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2465 | LOGPC(DCSN1, LOGL_DEBUG, "%u|", fl); |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 2466 | remaining_bits_len -= bits_to_handle; |
| 2467 | bit_offset += bits_to_handle; |
| 2468 | } |
| 2469 | else if (bits_to_handle == 0) |
| 2470 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2471 | bitvec_write_field(vector, writeIndex, filler, 8); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2472 | LOGPC(DCSN1, LOGL_DEBUG, "%u|", filler); |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 2473 | remaining_bits_len -= 8; |
| 2474 | bit_offset += 8; |
| 2475 | } |
| 2476 | } |
| 2477 | } |
| 2478 | if (remaining_bits_len < 0) |
| 2479 | { |
Pau Espin Pedrol | 70a2117 | 2020-03-26 19:50:50 +0100 | [diff] [blame] | 2480 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 2481 | } |
| 2482 | |
| 2483 | /* Padding was successfully extracted or it was empty */ |
| 2484 | pDescr++; |
| 2485 | break; |
| 2486 | } |
| 2487 | |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2488 | case CSN_VARIABLE_ARRAY: |
| 2489 | { /* {int type; int i; void* descr; int offset; const char* sz; } CSN_DESCR; |
| 2490 | * {CSN_VARIABLE_ARRAY, _OFFSET, (void*)offsetof(_STRUCT, _ElementCountField), offsetof(_STRUCT, _MEMBER), #_MEMBER} |
| 2491 | * Array with length specified in parameter: |
| 2492 | * <count: bit (x)> |
| 2493 | * <list: octet(count + offset)> |
| 2494 | */ |
| 2495 | gint16 count = *pui8DATA(data, (gint16)pDescr->descr.value); |
| 2496 | |
| 2497 | count += pDescr->i; /* Adjusted by offset */ |
| 2498 | |
| 2499 | if (count > 0) |
| 2500 | { |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2501 | if (remaining_bits_len < 0) |
| 2502 | { |
| 2503 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2504 | } |
| 2505 | |
| 2506 | pui8 = pui8DATA(data, pDescr->offset); |
| 2507 | |
| 2508 | while (count > 0) |
| 2509 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2510 | bitvec_write_field(vector, writeIndex, *pui8, 8); |
Pau Espin Pedrol | 74aa352 | 2020-11-24 11:10:52 +0100 | [diff] [blame] | 2511 | LOGPC(DCSN1, LOGL_DEBUG, "%s = 0x%x | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2512 | pui8++; |
| 2513 | bit_offset += 8; |
Jeff Morriss | c0b4f4a | 2020-01-24 15:00:58 +0100 | [diff] [blame] | 2514 | remaining_bits_len -= 8; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2515 | count--; |
| 2516 | } |
| 2517 | } |
| 2518 | |
| 2519 | pDescr++; |
| 2520 | break; |
| 2521 | } |
| 2522 | |
| 2523 | case CSN_RECURSIVE_ARRAY: |
| 2524 | { /* Recursive way to specify an array: <list> ::= {1 <number: bit (4)> <list> | 0} |
| 2525 | * or more generally: <list> ::= { <tag> <element> <list> | <EndTag> } |
| 2526 | * where <element> ::= bit(value) |
| 2527 | * <tag> ::= 0 | 1 |
| 2528 | * <EndTag> ::= reversed tag i.e. tag == 1 -> EndTag == 0 and vice versa |
| 2529 | * {CSN_RECURSIVE_ARRAY, _BITS, (void*)offsetof(_STRUCT, _ElementCountField), offsetof(_STRUCT, _MEMBER), #_MEMBER} |
| 2530 | * REMARK: recursive way to specify an array but an iterative implementation! |
| 2531 | */ |
| 2532 | gint16 no_of_bits = pDescr->i; |
| 2533 | guint8 ElementCount = 0; |
| 2534 | pui8 = pui8DATA(data, pDescr->offset); |
| 2535 | ElementCount = *pui8DATA(data, (gint16)pDescr->descr.value); |
| 2536 | while (ElementCount > 0) |
| 2537 | { /* tag control shows existence of next list elements */ |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2538 | bitvec_write_field(vector, writeIndex, Tag, 1); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2539 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)Tag); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2540 | bit_offset++; |
| 2541 | remaining_bits_len--; |
| 2542 | |
| 2543 | /* extract and store no_of_bits long element from bitstream */ |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2544 | bitvec_write_field(vector, writeIndex, *pui8, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2545 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)*pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2546 | pui8++; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2547 | ElementCount--; |
| 2548 | |
| 2549 | if (remaining_bits_len < 0) |
| 2550 | { |
| 2551 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2552 | } |
| 2553 | |
| 2554 | bit_offset += no_of_bits; |
Jeff Morriss | c0b4f4a | 2020-01-24 15:00:58 +0100 | [diff] [blame] | 2555 | remaining_bits_len -= no_of_bits; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2556 | } |
| 2557 | |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2558 | bitvec_write_field(vector, writeIndex, !Tag, 1); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2559 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)(!Tag)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2560 | bit_offset++; |
Saurabh Sharan | 2b09c39 | 2016-03-16 19:17:32 +0530 | [diff] [blame] | 2561 | remaining_bits_len--; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2562 | |
| 2563 | pDescr++; |
| 2564 | break; |
| 2565 | } |
| 2566 | |
| 2567 | case CSN_RECURSIVE_TARRAY: |
| 2568 | { /* Recursive way to specify an array of type: <lists> ::= { 1 <type> } ** 0 ; |
| 2569 | * M_REC_TARRAY(_STRUCT, _MEMBER, _MEMBER_TYPE, _ElementCountField) |
| 2570 | * {t, offsetof(_STRUCT, _ElementCountField), (void*)CSNDESCR_##_MEMBER_TYPE, offsetof(_STRUCT, _MEMBER), #_MEMBER, (StreamSerializeFcn_t)sizeof(_MEMBER_TYPE)} |
| 2571 | */ |
Pau Espin Pedrol | 900c2e2 | 2020-01-24 18:05:00 +0100 | [diff] [blame] | 2572 | gint16 nSizeElement = (gint16)(gint32)pDescr->value; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2573 | guint8 ElementCount = 0; |
| 2574 | pui8 = pui8DATA(data, pDescr->offset); |
| 2575 | /* Store the counted number of elements of the array */ |
| 2576 | ElementCount = *pui8DATA(data, (gint16)(gint32)pDescr->i); |
| 2577 | |
| 2578 | while (ElementCount > 0) |
| 2579 | { /* tag control shows existence of next list elements */ |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2580 | bitvec_write_field(vector, writeIndex, Tag, 1); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2581 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)Tag); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2582 | bit_offset++; |
| 2583 | |
| 2584 | remaining_bits_len--; |
| 2585 | ElementCount--; |
| 2586 | |
| 2587 | { /* unpack the following data structure */ |
| 2588 | csnStream_t arT = *ar; |
| 2589 | gint16 Status; |
| 2590 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
Ivan Kluchnikov | 4440845 | 2013-03-01 02:46:10 +0400 | [diff] [blame] | 2591 | Status = csnStreamEncoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, writeIndex, pui8); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2592 | |
| 2593 | if (Status >= 0) |
| 2594 | { /* successful completion */ |
| 2595 | pui8 += nSizeElement; /* -> to next data element */ |
| 2596 | remaining_bits_len = arT.remaining_bits_len; |
| 2597 | bit_offset = arT.bit_offset; |
| 2598 | } |
| 2599 | else |
| 2600 | { /* something went awry */ |
| 2601 | return Status; |
| 2602 | } |
| 2603 | } |
| 2604 | |
| 2605 | if (remaining_bits_len < 0) |
| 2606 | { |
| 2607 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2608 | } |
| 2609 | } |
| 2610 | |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2611 | bitvec_write_field(vector, writeIndex, !Tag, 1); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2612 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)(!Tag)); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2613 | bit_offset++; |
| 2614 | |
| 2615 | pDescr++; |
| 2616 | break; |
| 2617 | } |
| 2618 | |
| 2619 | case CSN_RECURSIVE_TARRAY_2: |
| 2620 | { /* Recursive way to specify an array of type: <list> ::= <type> { 0 <type> } ** 1 ; */ |
| 2621 | |
| 2622 | Tag = REVERSED_TAG; |
| 2623 | |
| 2624 | /* NO break - |
| 2625 | * handling is exactly the same as for CSN_RECURSIVE_TARRAY_1 so we continue |
| 2626 | */ |
| 2627 | } |
Alexis La Goutte | e36fb5b | 2020-01-24 18:22:35 +0100 | [diff] [blame] | 2628 | /* FALL THROUGH */ |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2629 | case CSN_RECURSIVE_TARRAY_1: |
| 2630 | { /* Recursive way to specify an array of type: <lists> ::= <type> { 1 <type> } ** 0 ; |
| 2631 | * M_REC_TARRAY(_STRUCT, _MEMBER, _MEMBER_TYPE, _ElementCountField) |
| 2632 | * {t, offsetof(_STRUCT, _ElementCountField), (void*)CSNDESCR_##_MEMBER_TYPE, offsetof(_STRUCT, _MEMBER), #_MEMBER, (StreamSerializeFcn_t)sizeof(_MEMBER_TYPE)} |
| 2633 | */ |
Pau Espin Pedrol | 900c2e2 | 2020-01-24 18:05:00 +0100 | [diff] [blame] | 2634 | gint16 nSizeElement = (gint16)(gint32)pDescr->value; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2635 | guint8 ElementCount = 0; |
| 2636 | guint8 ElementNum = 0; |
| 2637 | csnStream_t arT = *ar; |
| 2638 | gint16 Status; |
| 2639 | |
| 2640 | pui8 = pui8DATA(data, pDescr->offset); |
| 2641 | /* Store the count of the array */ |
| 2642 | ElementCount = *pui8DATA(data, pDescr->i); |
| 2643 | ElementNum = ElementCount; |
| 2644 | |
| 2645 | while (ElementCount > 0) |
| 2646 | { /* get data element */ |
| 2647 | if (ElementCount != ElementNum) |
| 2648 | { |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2649 | bitvec_write_field(vector, writeIndex, Tag, 1); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2650 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)Tag); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2651 | bit_offset++; |
| 2652 | remaining_bits_len--; |
| 2653 | } |
| 2654 | ElementCount--; |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2655 | LOGPC(DCSN1, LOGL_DEBUG, "%s { | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2656 | csnStreamInit(&arT, bit_offset, remaining_bits_len); |
Ivan Kluchnikov | 4440845 | 2013-03-01 02:46:10 +0400 | [diff] [blame] | 2657 | Status = csnStreamEncoder(&arT, (const CSN_DESCR*)pDescr->descr.ptr, vector, writeIndex, pui8); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2658 | LOGPC(DCSN1, LOGL_DEBUG, "%s } | ", pDescr->sz); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2659 | if (Status >= 0) |
| 2660 | { /* successful completion */ |
| 2661 | pui8 += nSizeElement; /* -> to next */ |
| 2662 | remaining_bits_len = arT.remaining_bits_len; |
| 2663 | bit_offset = arT.bit_offset; |
| 2664 | } |
| 2665 | else |
| 2666 | { /* something went awry */ |
| 2667 | return Status; |
| 2668 | } |
| 2669 | |
| 2670 | if (remaining_bits_len < 0) |
| 2671 | { |
| 2672 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2673 | } |
| 2674 | |
| 2675 | } |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2676 | bitvec_write_field(vector, writeIndex, !Tag, 1); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2677 | bit_offset++; |
Ivan Kluchnikov | 701d9f8 | 2012-10-10 19:43:37 +0400 | [diff] [blame] | 2678 | remaining_bits_len--; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2679 | Tag = STANDARD_TAG; /* in case it was set to "reversed" */ |
| 2680 | pDescr++; |
| 2681 | break; |
| 2682 | } |
| 2683 | |
| 2684 | case CSN_FIXED: |
| 2685 | { /* Verify the fixed bits */ |
| 2686 | guint8 no_of_bits = (guint8) pDescr->i; |
Vadim Yanitskiy | 39a6505 | 2020-01-25 01:24:59 +0700 | [diff] [blame] | 2687 | bitvec_write_field(vector, writeIndex, pDescr->offset, no_of_bits); |
Harald Welte | 570f913 | 2020-03-19 15:03:01 +0100 | [diff] [blame] | 2688 | LOGPC(DCSN1, LOGL_DEBUG, "%s = %u | ", pDescr->sz , (unsigned)pDescr->offset); |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2689 | remaining_bits_len -= no_of_bits; |
| 2690 | bit_offset += no_of_bits; |
| 2691 | pDescr++; |
| 2692 | break; |
| 2693 | } |
| 2694 | |
| 2695 | case CSN_CALLBACK: |
| 2696 | { |
Pau Espin Pedrol | c9880b9 | 2021-05-28 18:41:19 +0200 | [diff] [blame] | 2697 | guint16 no_of_bits; |
| 2698 | DissectorCallbackFcn_t callback = (DissectorCallbackFcn_t)pDescr->aux_fn; |
| 2699 | LOGPC(DCSN1, LOGL_DEBUG, "CSN_CALLBACK(%s) | ", pDescr->sz); |
| 2700 | no_of_bits = callback(vector, writeIndex, pvDATA(data, pDescr->i), pvDATA(data, pDescr->offset)); |
| 2701 | remaining_bits_len -= no_of_bits; |
| 2702 | bit_offset += no_of_bits; |
| 2703 | pDescr++; |
Ivan Kluchnikov | 487a141 | 2011-12-21 13:17:53 +0300 | [diff] [blame] | 2704 | break; |
| 2705 | } |
| 2706 | |
| 2707 | case CSN_TRAP_ERROR: |
| 2708 | { |
| 2709 | return ProcessError(writeIndex,"csnStreamEncoder", pDescr->i, pDescr); |
| 2710 | } |
| 2711 | |
| 2712 | case CSN_END: |
| 2713 | { |
| 2714 | ar->remaining_bits_len = remaining_bits_len; |
| 2715 | ar->bit_offset = bit_offset; |
| 2716 | return remaining_bits_len; |
| 2717 | } |
| 2718 | |
| 2719 | default: |
| 2720 | { |
| 2721 | assert(0); |
| 2722 | } |
| 2723 | |
| 2724 | } |
| 2725 | |
| 2726 | } while (remaining_bits_len >= 0); |
| 2727 | |
| 2728 | return ProcessError(writeIndex,"csnStreamEncoder", CSN_ERROR_NEED_MORE_BITS_TO_UNPACK, pDescr); |
| 2729 | } |