Lev Walkin | f6853ce | 2017-08-11 00:50:27 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2017 Lev Walkin <vlm@lionet.info>. All rights reserved. |
| 3 | * Redistribution and modifications are permitted subject to BSD license. |
| 4 | */ |
| 5 | #include <asn_internal.h> |
| 6 | #include <OPEN_TYPE.h> |
| 7 | #include <constr_CHOICE.h> |
| 8 | #include <per_opentype.h> |
| 9 | #include <errno.h> |
| 10 | |
Bi-Ruei, Chiu | 1f87ac0 | 2017-08-20 01:25:45 +0800 | [diff] [blame] | 11 | asn_TYPE_operation_t asn_OP_OPEN_TYPE = { |
| 12 | OPEN_TYPE_free, |
| 13 | OPEN_TYPE_print, |
| 14 | OPEN_TYPE_compare, |
Bi-Ruei, Chiu | 1f87ac0 | 2017-08-20 01:25:45 +0800 | [diff] [blame] | 15 | OPEN_TYPE_decode_ber, |
| 16 | OPEN_TYPE_encode_der, |
| 17 | OPEN_TYPE_decode_xer, |
| 18 | OPEN_TYPE_encode_xer, |
| 19 | 0, 0, /* No OER support, use "-gen-OER" to enable */ |
Lev Walkin | a4db2af | 2017-08-27 01:27:07 -0700 | [diff] [blame] | 20 | #ifdef ASN_DISABLE_PER_SUPPORT |
| 21 | 0, 0, |
| 22 | #else |
Bi-Ruei, Chiu | 1f87ac0 | 2017-08-20 01:25:45 +0800 | [diff] [blame] | 23 | OPEN_TYPE_decode_uper, |
| 24 | OPEN_TYPE_encode_uper, |
Lev Walkin | a4db2af | 2017-08-27 01:27:07 -0700 | [diff] [blame] | 25 | #endif |
Lev Walkin | a5972be | 2017-09-29 23:15:58 -0700 | [diff] [blame] | 26 | 0, /* Random fill is not supported for open type */ |
Bi-Ruei, Chiu | 1f87ac0 | 2017-08-20 01:25:45 +0800 | [diff] [blame] | 27 | 0, /* Use generic outmost tag fetcher */ |
| 28 | }; |
Lev Walkin | f6853ce | 2017-08-11 00:50:27 -0700 | [diff] [blame] | 29 | |
Lev Walkin | c10d30a | 2017-08-27 00:38:21 -0700 | [diff] [blame] | 30 | #undef ADVANCE |
| 31 | #define ADVANCE(num_bytes) \ |
Lev Walkin | f59dac9 | 2017-08-26 21:26:51 -0700 | [diff] [blame] | 32 | do { \ |
| 33 | size_t num = num_bytes; \ |
| 34 | ptr = ((const char *)ptr) + num; \ |
| 35 | size -= num; \ |
| 36 | consumed_myself += num; \ |
| 37 | } while(0) |
| 38 | |
| 39 | asn_dec_rval_t |
Lev Walkin | afbf2a9 | 2017-09-12 23:30:27 -0700 | [diff] [blame] | 40 | OPEN_TYPE_ber_get(const asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, |
Lev Walkin | c10d30a | 2017-08-27 00:38:21 -0700 | [diff] [blame] | 41 | void *sptr, asn_TYPE_member_t *elm, const void *ptr, |
| 42 | size_t size) { |
| 43 | size_t consumed_myself = 0; |
| 44 | asn_type_selector_result_t selected; |
| 45 | void *memb_ptr; /* Pointer to the member */ |
| 46 | void **memb_ptr2; /* Pointer to that pointer */ |
| 47 | void *inner_value; |
| 48 | asn_dec_rval_t rv; |
| 49 | |
Lev Walkin | 75b6fe4 | 2017-08-27 01:03:22 -0700 | [diff] [blame] | 50 | if(!(elm->flags & ATF_OPEN_TYPE)) { |
| 51 | ASN__DECODE_FAILED; |
| 52 | } |
| 53 | |
| 54 | if(!elm->type_selector) { |
| 55 | ASN_DEBUG("Type selector is not defined for Open Type %s->%s->%s", |
| 56 | td->name, elm->name, elm->type->name); |
Lev Walkin | c10d30a | 2017-08-27 00:38:21 -0700 | [diff] [blame] | 57 | ASN__DECODE_FAILED; |
| 58 | } |
| 59 | |
| 60 | selected = elm->type_selector(td, sptr); |
| 61 | if(!selected.presence_index) { |
| 62 | ASN__DECODE_FAILED; |
| 63 | } |
| 64 | |
| 65 | /* Fetch the pointer to this member */ |
| 66 | if(elm->flags & ATF_POINTER) { |
| 67 | memb_ptr2 = (void **)((char *)sptr + elm->memb_offset); |
| 68 | } else { |
| 69 | memb_ptr = (char *)sptr + elm->memb_offset; |
| 70 | memb_ptr2 = &memb_ptr; |
| 71 | } |
| 72 | if(*memb_ptr2 != NULL) { |
| 73 | /* Make sure we reset the structure first before encoding */ |
| 74 | if(CHOICE_variant_set_presence(elm->type, *memb_ptr2, 0) != 0) { |
| 75 | ASN__DECODE_FAILED; |
| 76 | } |
| 77 | } |
| 78 | |
| 79 | inner_value = |
| 80 | (char *)*memb_ptr2 |
| 81 | + elm->type->elements[selected.presence_index - 1].memb_offset; |
| 82 | |
| 83 | ASN_DEBUG("presence %d\n", selected.presence_index); |
| 84 | |
| 85 | rv = selected.type_descriptor->op->ber_decoder( |
| 86 | opt_codec_ctx, selected.type_descriptor, &inner_value, ptr, size, |
| 87 | elm->tag_mode); |
| 88 | ADVANCE(rv.consumed); |
| 89 | rv.consumed = 0; |
| 90 | switch(rv.code) { |
| 91 | case RC_OK: |
| 92 | if(CHOICE_variant_set_presence(elm->type, *memb_ptr2, |
| 93 | selected.presence_index) |
| 94 | == 0) { |
| 95 | rv.code = RC_OK; |
| 96 | rv.consumed = consumed_myself; |
| 97 | return rv; |
| 98 | } else { |
| 99 | /* Oh, now a full-blown failure failure */ |
| 100 | } |
| 101 | /* Fall through */ |
| 102 | case RC_FAIL: |
| 103 | rv.consumed = consumed_myself; |
| 104 | /* Fall through */ |
| 105 | case RC_WMORE: |
| 106 | break; |
| 107 | } |
| 108 | |
| 109 | if(*memb_ptr2) { |
Lev Walkin | d84f603 | 2017-10-03 16:33:59 -0700 | [diff] [blame] | 110 | const asn_CHOICE_specifics_t *specs = |
| 111 | selected.type_descriptor->specifics; |
Lev Walkin | c10d30a | 2017-08-27 00:38:21 -0700 | [diff] [blame] | 112 | if(elm->flags & ATF_POINTER) { |
| 113 | ASN_STRUCT_FREE(*selected.type_descriptor, inner_value); |
| 114 | *memb_ptr2 = NULL; |
| 115 | } else { |
| 116 | ASN_STRUCT_FREE_CONTENTS_ONLY(*selected.type_descriptor, |
| 117 | inner_value); |
| 118 | memset(*memb_ptr2, 0, specs->struct_size); |
| 119 | } |
| 120 | } |
| 121 | return rv; |
| 122 | } |
| 123 | |
| 124 | asn_dec_rval_t |
Lev Walkin | afbf2a9 | 2017-09-12 23:30:27 -0700 | [diff] [blame] | 125 | OPEN_TYPE_xer_get(const asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, |
Lev Walkin | f59dac9 | 2017-08-26 21:26:51 -0700 | [diff] [blame] | 126 | void *sptr, asn_TYPE_member_t *elm, const void *ptr, |
| 127 | size_t size) { |
| 128 | size_t consumed_myself = 0; |
| 129 | asn_type_selector_result_t selected; |
| 130 | void *memb_ptr; /* Pointer to the member */ |
| 131 | void **memb_ptr2; /* Pointer to that pointer */ |
| 132 | void *inner_value; |
Lev Walkin | f59dac9 | 2017-08-26 21:26:51 -0700 | [diff] [blame] | 133 | asn_dec_rval_t rv; |
| 134 | |
| 135 | int xer_context = 0; |
| 136 | ssize_t ch_size; |
| 137 | pxer_chunk_type_e ch_type; |
| 138 | |
Lev Walkin | 75b6fe4 | 2017-08-27 01:03:22 -0700 | [diff] [blame] | 139 | if(!(elm->flags & ATF_OPEN_TYPE)) { |
| 140 | ASN__DECODE_FAILED; |
| 141 | } |
| 142 | |
| 143 | if(!elm->type_selector) { |
| 144 | ASN_DEBUG("Type selector is not defined for Open Type %s->%s->%s", |
| 145 | td->name, elm->name, elm->type->name); |
Lev Walkin | f59dac9 | 2017-08-26 21:26:51 -0700 | [diff] [blame] | 146 | ASN__DECODE_FAILED; |
| 147 | } |
| 148 | |
| 149 | selected = elm->type_selector(td, sptr); |
| 150 | if(!selected.presence_index) { |
| 151 | ASN__DECODE_FAILED; |
| 152 | } |
| 153 | |
| 154 | /* Fetch the pointer to this member */ |
| 155 | assert(elm->flags == ATF_OPEN_TYPE); |
| 156 | if(elm->flags & ATF_POINTER) { |
| 157 | memb_ptr2 = (void **)((char *)sptr + elm->memb_offset); |
| 158 | } else { |
| 159 | memb_ptr = (char *)sptr + elm->memb_offset; |
| 160 | memb_ptr2 = &memb_ptr; |
| 161 | } |
| 162 | if(*memb_ptr2 != NULL) { |
| 163 | /* Make sure we reset the structure first before encoding */ |
| 164 | if(CHOICE_variant_set_presence(elm->type, *memb_ptr2, 0) |
| 165 | != 0) { |
| 166 | ASN__DECODE_FAILED; |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | /* |
| 171 | * Confirm wrapper. |
| 172 | */ |
| 173 | for(;;) { |
| 174 | ch_size = xer_next_token(&xer_context, ptr, size, &ch_type); |
Lev Walkin | 4ccce3d | 2017-08-27 00:41:58 -0700 | [diff] [blame] | 175 | if(ch_size < 0) { |
Lev Walkin | f59dac9 | 2017-08-26 21:26:51 -0700 | [diff] [blame] | 176 | ASN__DECODE_FAILED; |
| 177 | } else { |
| 178 | switch(ch_type) { |
| 179 | case PXER_WMORE: |
| 180 | ASN__DECODE_STARVED; |
| 181 | case PXER_COMMENT: |
| 182 | case PXER_TEXT: |
Lev Walkin | c10d30a | 2017-08-27 00:38:21 -0700 | [diff] [blame] | 183 | ADVANCE(ch_size); |
Lev Walkin | f59dac9 | 2017-08-26 21:26:51 -0700 | [diff] [blame] | 184 | continue; |
| 185 | case PXER_TAG: |
| 186 | break; |
| 187 | } |
| 188 | break; |
| 189 | } |
| 190 | } |
| 191 | |
| 192 | /* |
| 193 | * Wrapper value confirmed. |
| 194 | */ |
| 195 | switch(xer_check_tag(ptr, ch_size, elm->name)) { |
| 196 | case XCT_OPENING: |
Lev Walkin | c10d30a | 2017-08-27 00:38:21 -0700 | [diff] [blame] | 197 | ADVANCE(ch_size); |
Lev Walkin | f59dac9 | 2017-08-26 21:26:51 -0700 | [diff] [blame] | 198 | break; |
| 199 | case XCT_BROKEN: |
| 200 | default: |
| 201 | ASN__DECODE_FAILED; |
| 202 | } |
| 203 | |
| 204 | inner_value = |
| 205 | (char *)*memb_ptr2 |
| 206 | + elm->type->elements[selected.presence_index - 1].memb_offset; |
| 207 | |
| 208 | rv = selected.type_descriptor->op->xer_decoder( |
| 209 | opt_codec_ctx, selected.type_descriptor, &inner_value, NULL, ptr, size); |
Lev Walkin | c10d30a | 2017-08-27 00:38:21 -0700 | [diff] [blame] | 210 | ADVANCE(rv.consumed); |
Lev Walkin | f59dac9 | 2017-08-26 21:26:51 -0700 | [diff] [blame] | 211 | rv.consumed = 0; |
| 212 | switch(rv.code) { |
| 213 | case RC_OK: |
| 214 | if(CHOICE_variant_set_presence(elm->type, *memb_ptr2, |
| 215 | selected.presence_index) |
| 216 | == 0) { |
| 217 | break; |
| 218 | } else { |
| 219 | rv.code = RC_FAIL; |
| 220 | } |
| 221 | /* Fall through */ |
| 222 | case RC_FAIL: |
| 223 | /* Point to a best position where failure occurred */ |
| 224 | rv.consumed = consumed_myself; |
| 225 | /* Fall through */ |
| 226 | case RC_WMORE: |
| 227 | /* Wrt. rv.consumed==0: |
| 228 | * In case a genuine RC_WMORE, the whole Open Type decoding |
| 229 | * will have to be restarted. |
| 230 | */ |
| 231 | if(*memb_ptr2) { |
Lev Walkin | d84f603 | 2017-10-03 16:33:59 -0700 | [diff] [blame] | 232 | const asn_CHOICE_specifics_t *specs = |
| 233 | selected.type_descriptor->specifics; |
Lev Walkin | f59dac9 | 2017-08-26 21:26:51 -0700 | [diff] [blame] | 234 | if(elm->flags & ATF_POINTER) { |
| 235 | ASN_STRUCT_FREE(*selected.type_descriptor, inner_value); |
| 236 | *memb_ptr2 = NULL; |
| 237 | } else { |
| 238 | ASN_STRUCT_FREE_CONTENTS_ONLY(*selected.type_descriptor, |
| 239 | inner_value); |
| 240 | memset(*memb_ptr2, 0, specs->struct_size); |
| 241 | } |
| 242 | } |
| 243 | return rv; |
| 244 | } |
| 245 | |
| 246 | /* |
| 247 | * Finalize wrapper. |
| 248 | */ |
| 249 | for(;;) { |
| 250 | ch_size = xer_next_token(&xer_context, ptr, size, &ch_type); |
Lev Walkin | 4ccce3d | 2017-08-27 00:41:58 -0700 | [diff] [blame] | 251 | if(ch_size < 0) { |
Lev Walkin | f59dac9 | 2017-08-26 21:26:51 -0700 | [diff] [blame] | 252 | ASN__DECODE_FAILED; |
| 253 | } else { |
| 254 | switch(ch_type) { |
| 255 | case PXER_WMORE: |
| 256 | ASN__DECODE_STARVED; |
| 257 | case PXER_COMMENT: |
| 258 | case PXER_TEXT: |
Lev Walkin | c10d30a | 2017-08-27 00:38:21 -0700 | [diff] [blame] | 259 | ADVANCE(ch_size); |
Lev Walkin | f59dac9 | 2017-08-26 21:26:51 -0700 | [diff] [blame] | 260 | continue; |
| 261 | case PXER_TAG: |
| 262 | break; |
| 263 | } |
| 264 | break; |
| 265 | } |
| 266 | } |
| 267 | |
| 268 | /* |
| 269 | * Wrapper value confirmed. |
| 270 | */ |
| 271 | switch(xer_check_tag(ptr, ch_size, elm->name)) { |
| 272 | case XCT_CLOSING: |
Lev Walkin | c10d30a | 2017-08-27 00:38:21 -0700 | [diff] [blame] | 273 | ADVANCE(ch_size); |
Lev Walkin | f59dac9 | 2017-08-26 21:26:51 -0700 | [diff] [blame] | 274 | break; |
| 275 | case XCT_BROKEN: |
| 276 | default: |
| 277 | ASN__DECODE_FAILED; |
| 278 | } |
| 279 | |
| 280 | rv.consumed += consumed_myself; |
| 281 | |
| 282 | return rv; |
| 283 | } |
| 284 | |
| 285 | |
Lev Walkin | 6903380 | 2017-08-25 12:15:58 -0700 | [diff] [blame] | 286 | #ifndef ASN_DISABLE_PER_SUPPORT |
| 287 | |
Lev Walkin | f6853ce | 2017-08-11 00:50:27 -0700 | [diff] [blame] | 288 | asn_dec_rval_t |
Lev Walkin | afbf2a9 | 2017-09-12 23:30:27 -0700 | [diff] [blame] | 289 | OPEN_TYPE_uper_get(const asn_codec_ctx_t *opt_codec_ctx, |
Lev Walkin | f6853ce | 2017-08-11 00:50:27 -0700 | [diff] [blame] | 290 | asn_TYPE_descriptor_t *td, void *sptr, |
| 291 | asn_TYPE_member_t *elm, asn_per_data_t *pd) { |
| 292 | asn_type_selector_result_t selected; |
| 293 | void *memb_ptr; /* Pointer to the member */ |
| 294 | void **memb_ptr2; /* Pointer to that pointer */ |
Lev Walkin | f59dac9 | 2017-08-26 21:26:51 -0700 | [diff] [blame] | 295 | void *inner_value; |
Lev Walkin | f6853ce | 2017-08-11 00:50:27 -0700 | [diff] [blame] | 296 | asn_dec_rval_t rv; |
| 297 | |
Lev Walkin | 75b6fe4 | 2017-08-27 01:03:22 -0700 | [diff] [blame] | 298 | if(!(elm->flags & ATF_OPEN_TYPE)) { |
| 299 | ASN__DECODE_FAILED; |
| 300 | } |
| 301 | |
| 302 | if(!elm->type_selector) { |
| 303 | ASN_DEBUG("Type selector is not defined for Open Type %s->%s->%s", |
| 304 | td->name, elm->name, elm->type->name); |
Lev Walkin | f6853ce | 2017-08-11 00:50:27 -0700 | [diff] [blame] | 305 | ASN__DECODE_FAILED; |
| 306 | } |
| 307 | |
| 308 | selected = elm->type_selector(td, sptr); |
| 309 | if(!selected.presence_index) { |
| 310 | ASN__DECODE_FAILED; |
| 311 | } |
| 312 | |
| 313 | /* Fetch the pointer to this member */ |
| 314 | assert(elm->flags == ATF_OPEN_TYPE); |
| 315 | if(elm->flags & ATF_POINTER) { |
| 316 | memb_ptr2 = (void **)((char *)sptr + elm->memb_offset); |
| 317 | } else { |
| 318 | memb_ptr = (char *)sptr + elm->memb_offset; |
| 319 | memb_ptr2 = &memb_ptr; |
| 320 | } |
| 321 | if(*memb_ptr2 != NULL) { |
| 322 | /* Make sure we reset the structure first before encoding */ |
| 323 | if(CHOICE_variant_set_presence(elm->type, *memb_ptr2, 0) |
| 324 | != 0) { |
| 325 | ASN__DECODE_FAILED; |
| 326 | } |
| 327 | } |
| 328 | |
Lev Walkin | f59dac9 | 2017-08-26 21:26:51 -0700 | [diff] [blame] | 329 | inner_value = |
Lev Walkin | f6853ce | 2017-08-11 00:50:27 -0700 | [diff] [blame] | 330 | (char *)*memb_ptr2 |
| 331 | + elm->type->elements[selected.presence_index - 1].memb_offset; |
| 332 | |
| 333 | rv = uper_open_type_get(opt_codec_ctx, selected.type_descriptor, NULL, |
| 334 | &inner_value, pd); |
| 335 | switch(rv.code) { |
| 336 | case RC_OK: |
| 337 | if(CHOICE_variant_set_presence(elm->type, *memb_ptr2, |
| 338 | selected.presence_index) |
| 339 | == 0) { |
| 340 | break; |
| 341 | } else { |
| 342 | rv.code = RC_FAIL; |
| 343 | } |
| 344 | /* Fall through */ |
| 345 | case RC_WMORE: |
| 346 | case RC_FAIL: |
| 347 | if(*memb_ptr2) { |
Lev Walkin | d84f603 | 2017-10-03 16:33:59 -0700 | [diff] [blame] | 348 | const asn_CHOICE_specifics_t *specs = |
| 349 | selected.type_descriptor->specifics; |
Lev Walkin | f6853ce | 2017-08-11 00:50:27 -0700 | [diff] [blame] | 350 | if(elm->flags & ATF_POINTER) { |
| 351 | ASN_STRUCT_FREE(*selected.type_descriptor, inner_value); |
| 352 | *memb_ptr2 = NULL; |
| 353 | } else { |
| 354 | ASN_STRUCT_FREE_CONTENTS_ONLY(*selected.type_descriptor, |
| 355 | inner_value); |
| 356 | memset(*memb_ptr2, 0, specs->struct_size); |
| 357 | } |
| 358 | } |
| 359 | } |
| 360 | return rv; |
| 361 | } |
| 362 | |
Lev Walkin | 35ace19 | 2017-08-26 23:33:14 -0700 | [diff] [blame] | 363 | asn_enc_rval_t |
| 364 | OPEN_TYPE_encode_uper(asn_TYPE_descriptor_t *td, |
| 365 | const asn_per_constraints_t *constraints, void *sptr, |
| 366 | asn_per_outp_t *po) { |
Lev Walkin | 35ace19 | 2017-08-26 23:33:14 -0700 | [diff] [blame] | 367 | void *memb_ptr; /* Pointer to the member */ |
| 368 | asn_TYPE_member_t *elm; /* CHOICE's element */ |
| 369 | asn_enc_rval_t er; |
| 370 | unsigned present; |
| 371 | |
| 372 | (void)constraints; |
| 373 | |
| 374 | present = CHOICE_variant_get_presence(td, sptr); |
| 375 | if(present == 0 || present > td->elements_count) { |
| 376 | ASN__ENCODE_FAILED; |
| 377 | } else { |
| 378 | present--; |
| 379 | } |
| 380 | |
| 381 | ASN_DEBUG("Encoding %s OPEN TYPE element %d", td->name, present); |
| 382 | |
| 383 | elm = &td->elements[present]; |
| 384 | if(elm->flags & ATF_POINTER) { |
| 385 | /* Member is a pointer to another structure */ |
| 386 | memb_ptr = *(void **)((char *)sptr + elm->memb_offset); |
| 387 | if(!memb_ptr) ASN__ENCODE_FAILED; |
| 388 | } else { |
| 389 | memb_ptr = (char *)sptr + elm->memb_offset; |
| 390 | } |
| 391 | |
| 392 | if(uper_open_type_put(elm->type, NULL, memb_ptr, po) < 0) { |
| 393 | ASN__ENCODE_FAILED; |
| 394 | } |
| 395 | |
| 396 | er.encoded = 0; |
| 397 | ASN__ENCODED_OK(er); |
| 398 | } |
| 399 | |
| 400 | |
Lev Walkin | 6903380 | 2017-08-25 12:15:58 -0700 | [diff] [blame] | 401 | #endif /* ASN_DISABLE_PER_SUPPORT */ |