vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 1 | /*- |
vlm | 390a902 | 2005-02-14 17:21:22 +0000 | [diff] [blame] | 2 | * Copyright (c) 2003, 2004, 2005 Lev Walkin <vlm@lionet.info>. |
| 3 | * All rights reserved. |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 4 | * Redistribution and modifications are permitted subject to BSD license. |
| 5 | */ |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 6 | #include <asn_internal.h> |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 7 | #include <constr_CHOICE.h> |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 8 | |
| 9 | /* |
| 10 | * Number of bytes left for this structure. |
| 11 | * (ctx->left) indicates the number of bytes _transferred_ for the structure. |
| 12 | * (size) contains the number of bytes in the buffer passed. |
| 13 | */ |
vlm | c519061 | 2004-08-18 04:53:32 +0000 | [diff] [blame] | 14 | #define LEFT ((size<(size_t)ctx->left)?size:(size_t)ctx->left) |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 15 | |
| 16 | /* |
| 17 | * If the subprocessor function returns with an indication that it wants |
| 18 | * more data, it may well be a fatal decoding problem, because the |
| 19 | * size is constrained by the <TLV>'s L, even if the buffer size allows |
| 20 | * reading more data. |
| 21 | * For example, consider the buffer containing the following TLVs: |
| 22 | * <T:5><L:1><V> <T:6>... |
| 23 | * The TLV length clearly indicates that one byte is expected in V, but |
| 24 | * if the V processor returns with "want more data" even if the buffer |
| 25 | * contains way more data than the V processor have seen. |
| 26 | */ |
vlm | b42843a | 2004-06-05 08:17:50 +0000 | [diff] [blame] | 27 | #define SIZE_VIOLATION (ctx->left >= 0 && (size_t)ctx->left <= size) |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 28 | |
| 29 | /* |
| 30 | * This macro "eats" the part of the buffer which is definitely "consumed", |
| 31 | * i.e. was correctly converted into local representation or rightfully skipped. |
| 32 | */ |
vlm | ef1b4c0 | 2004-09-23 22:06:26 +0000 | [diff] [blame] | 33 | #undef ADVANCE |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 34 | #define ADVANCE(num_bytes) do { \ |
| 35 | size_t num = num_bytes; \ |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 36 | ptr = ((const char *)ptr) + num;\ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 37 | size -= num; \ |
| 38 | if(ctx->left >= 0) \ |
| 39 | ctx->left -= num; \ |
| 40 | consumed_myself += num; \ |
| 41 | } while(0) |
| 42 | |
| 43 | /* |
| 44 | * Switch to the next phase of parsing. |
| 45 | */ |
vlm | ef1b4c0 | 2004-09-23 22:06:26 +0000 | [diff] [blame] | 46 | #undef NEXT_PHASE |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 47 | #define NEXT_PHASE(ctx) do { \ |
| 48 | ctx->phase++; \ |
| 49 | ctx->step = 0; \ |
| 50 | } while(0) |
| 51 | |
| 52 | /* |
| 53 | * Return a standardized complex structure. |
| 54 | */ |
vlm | ef1b4c0 | 2004-09-23 22:06:26 +0000 | [diff] [blame] | 55 | #undef RETURN |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 56 | #define RETURN(_code) do { \ |
| 57 | rval.code = _code; \ |
| 58 | rval.consumed = consumed_myself;\ |
| 59 | return rval; \ |
| 60 | } while(0) |
| 61 | |
| 62 | /* |
| 63 | * See the definitions. |
| 64 | */ |
vlm | e55716a | 2004-08-11 09:10:59 +0000 | [diff] [blame] | 65 | static int _fetch_present_idx(const void *struct_ptr, int off, int size); |
| 66 | static void _set_present_idx(void *sptr, int offset, int size, int pres); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 67 | |
| 68 | /* |
| 69 | * Tags are canonically sorted in the tag to member table. |
| 70 | */ |
| 71 | static int |
| 72 | _search4tag(const void *ap, const void *bp) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 73 | const asn_TYPE_tag2member_t *a = (const asn_TYPE_tag2member_t *)ap; |
| 74 | const asn_TYPE_tag2member_t *b = (const asn_TYPE_tag2member_t *)bp; |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 75 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 76 | int a_class = BER_TAG_CLASS(a->el_tag); |
| 77 | int b_class = BER_TAG_CLASS(b->el_tag); |
| 78 | |
| 79 | if(a_class == b_class) { |
| 80 | ber_tlv_tag_t a_value = BER_TAG_VALUE(a->el_tag); |
| 81 | ber_tlv_tag_t b_value = BER_TAG_VALUE(b->el_tag); |
| 82 | |
| 83 | if(a_value == b_value) |
| 84 | return 0; |
| 85 | else if(a_value < b_value) |
| 86 | return -1; |
| 87 | else |
| 88 | return 1; |
| 89 | } else if(a_class < b_class) { |
| 90 | return -1; |
| 91 | } else { |
| 92 | return 1; |
| 93 | } |
| 94 | } |
| 95 | |
| 96 | /* |
| 97 | * The decoder of the CHOICE type. |
| 98 | */ |
vlm | 9de248e | 2004-10-20 15:50:55 +0000 | [diff] [blame] | 99 | asn_dec_rval_t |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 100 | CHOICE_decode_ber(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 101 | void **struct_ptr, const void *ptr, size_t size, int tag_mode) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 102 | /* |
| 103 | * Bring closer parts of structure description. |
| 104 | */ |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 105 | asn_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics; |
| 106 | asn_TYPE_member_t *elements = td->elements; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 107 | |
| 108 | /* |
| 109 | * Parts of the structure being constructed. |
| 110 | */ |
| 111 | void *st = *struct_ptr; /* Target structure. */ |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 112 | asn_struct_ctx_t *ctx; /* Decoder context */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 113 | |
| 114 | ber_tlv_tag_t tlv_tag; /* T from TLV */ |
| 115 | ssize_t tag_len; /* Length of TLV's T */ |
vlm | 9de248e | 2004-10-20 15:50:55 +0000 | [diff] [blame] | 116 | asn_dec_rval_t rval; /* Return code from subparsers */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 117 | |
| 118 | ssize_t consumed_myself = 0; /* Consumed bytes from ptr */ |
| 119 | |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 120 | ASN_DEBUG("Decoding %s as CHOICE", td->name); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 121 | |
| 122 | /* |
| 123 | * Create the target structure if it is not present already. |
| 124 | */ |
| 125 | if(st == 0) { |
| 126 | st = *struct_ptr = CALLOC(1, specs->struct_size); |
| 127 | if(st == 0) { |
| 128 | RETURN(RC_FAIL); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | /* |
| 133 | * Restore parsing context. |
| 134 | */ |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 135 | ctx = (asn_struct_ctx_t *)((char *)st + specs->ctx_offset); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 136 | |
| 137 | /* |
| 138 | * Start to parse where left previously |
| 139 | */ |
| 140 | switch(ctx->phase) { |
| 141 | case 0: |
| 142 | /* |
| 143 | * PHASE 0. |
| 144 | * Check that the set of tags associated with given structure |
| 145 | * perfectly fits our expectations. |
| 146 | */ |
| 147 | |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 148 | if(tag_mode || td->tags_count) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 149 | rval = ber_check_tags(opt_codec_ctx, td, ctx, ptr, size, |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 150 | tag_mode, -1, &ctx->left, 0); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 151 | if(rval.code != RC_OK) { |
| 152 | ASN_DEBUG("%s tagging check failed: %d", |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 153 | td->name, rval.code); |
vlm | e1ecb06 | 2004-10-05 06:36:02 +0000 | [diff] [blame] | 154 | return rval; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 155 | } |
| 156 | |
| 157 | if(ctx->left >= 0) { |
| 158 | /* ?Substracted below! */ |
| 159 | ctx->left += rval.consumed; |
| 160 | } |
| 161 | ADVANCE(rval.consumed); |
| 162 | } else { |
| 163 | ctx->left = -1; |
| 164 | } |
| 165 | |
| 166 | NEXT_PHASE(ctx); |
| 167 | |
| 168 | ASN_DEBUG("Structure consumes %ld bytes, buffer %ld", |
| 169 | (long)ctx->left, (long)size); |
| 170 | |
| 171 | /* Fall through */ |
| 172 | case 1: |
| 173 | /* |
| 174 | * Fetch the T from TLV. |
| 175 | */ |
| 176 | tag_len = ber_fetch_tag(ptr, LEFT, &tlv_tag); |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 177 | ASN_DEBUG("In %s CHOICE tag length %d", td->name, (int)tag_len); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 178 | switch(tag_len) { |
| 179 | case 0: if(!SIZE_VIOLATION) RETURN(RC_WMORE); |
| 180 | /* Fall through */ |
| 181 | case -1: RETURN(RC_FAIL); |
| 182 | } |
| 183 | |
| 184 | do { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 185 | asn_TYPE_tag2member_t *t2m; |
| 186 | asn_TYPE_tag2member_t key; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 187 | |
| 188 | key.el_tag = tlv_tag; |
vlm | a8f4a4c | 2005-01-17 14:32:45 +0000 | [diff] [blame] | 189 | t2m = (asn_TYPE_tag2member_t *)bsearch(&key, |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 190 | specs->tag2el, specs->tag2el_count, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 191 | sizeof(specs->tag2el[0]), _search4tag); |
| 192 | if(t2m) { |
| 193 | /* |
| 194 | * Found the element corresponding to the tag. |
| 195 | */ |
| 196 | NEXT_PHASE(ctx); |
| 197 | ctx->step = t2m->el_no; |
| 198 | break; |
| 199 | } else if(specs->extensible == 0) { |
| 200 | ASN_DEBUG("Unexpected tag %s " |
| 201 | "in non-extensible CHOICE %s", |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 202 | ber_tlv_tag_string(tlv_tag), td->name); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 203 | RETURN(RC_FAIL); |
| 204 | } else { |
| 205 | /* Skip this tag */ |
| 206 | ssize_t skip; |
| 207 | |
| 208 | ASN_DEBUG("Skipping unknown tag %s", |
| 209 | ber_tlv_tag_string(tlv_tag)); |
| 210 | |
vlm | 6130a2f | 2004-09-29 14:19:14 +0000 | [diff] [blame] | 211 | skip = ber_skip_length(opt_codec_ctx, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 212 | BER_TLV_CONSTRUCTED(ptr), |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 213 | (const char *)ptr + tag_len, |
| 214 | LEFT - tag_len); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 215 | |
| 216 | switch(skip) { |
| 217 | case 0: if(!SIZE_VIOLATION) RETURN(RC_WMORE); |
| 218 | /* Fall through */ |
| 219 | case -1: RETURN(RC_FAIL); |
| 220 | } |
| 221 | |
| 222 | ADVANCE(skip + tag_len); |
| 223 | RETURN(RC_OK); |
| 224 | } |
| 225 | } while(0); |
| 226 | |
| 227 | case 2: |
| 228 | /* |
| 229 | * PHASE 2. |
| 230 | * Read in the element. |
| 231 | */ |
| 232 | do { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 233 | asn_TYPE_member_t *elm;/* CHOICE's element */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 234 | void *memb_ptr; /* Pointer to the member */ |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 235 | void **memb_ptr2; /* Pointer to that pointer */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 236 | |
| 237 | elm = &elements[ctx->step]; |
| 238 | |
| 239 | /* |
| 240 | * Compute the position of the member inside a structure, |
| 241 | * and also a type of containment (it may be contained |
| 242 | * as pointer or using inline inclusion). |
| 243 | */ |
vlm | ddd5a7d | 2004-09-10 09:18:20 +0000 | [diff] [blame] | 244 | if(elm->flags & ATF_POINTER) { |
| 245 | /* Member is a pointer to another structure */ |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 246 | memb_ptr2 = (void **)((char *)st + elm->memb_offset); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 247 | } else { |
| 248 | /* |
| 249 | * A pointer to a pointer |
| 250 | * holding the start of the structure |
| 251 | */ |
| 252 | memb_ptr = (char *)st + elm->memb_offset; |
| 253 | memb_ptr2 = &memb_ptr; |
| 254 | } |
| 255 | /* |
| 256 | * Invoke the member fetch routine according to member's type |
| 257 | */ |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 258 | rval = elm->type->ber_decoder(opt_codec_ctx, elm->type, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 259 | memb_ptr2, ptr, LEFT, |
| 260 | elm->tag_mode); |
| 261 | switch(rval.code) { |
| 262 | case RC_OK: |
| 263 | _set_present_idx(st, specs->pres_offset, |
| 264 | specs->pres_size, ctx->step + 1); |
| 265 | break; |
| 266 | case RC_WMORE: /* More data expected */ |
| 267 | if(!SIZE_VIOLATION) { |
| 268 | ADVANCE(rval.consumed); |
| 269 | RETURN(RC_WMORE); |
| 270 | } |
| 271 | RETURN(RC_FAIL); |
| 272 | case RC_FAIL: /* Fatal error */ |
| 273 | RETURN(rval.code); |
| 274 | } /* switch(rval) */ |
| 275 | |
| 276 | ADVANCE(rval.consumed); |
| 277 | } while(0); |
| 278 | |
| 279 | NEXT_PHASE(ctx); |
| 280 | |
| 281 | /* Fall through */ |
| 282 | case 3: |
| 283 | ASN_DEBUG("CHOICE %s Leftover: %ld, size = %ld, tm=%d, tc=%d", |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 284 | td->name, (long)ctx->left, (long)size, |
| 285 | tag_mode, td->tags_count); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 286 | |
| 287 | if(ctx->left > 0) { |
| 288 | /* |
| 289 | * The type must be fully decoded |
| 290 | * by the CHOICE member-specific decoder. |
| 291 | */ |
| 292 | RETURN(RC_FAIL); |
| 293 | } |
| 294 | |
| 295 | if(ctx->left == -1 |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 296 | && !(tag_mode || td->tags_count)) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 297 | /* |
| 298 | * This is an untagged CHOICE. |
| 299 | * It doesn't contain nothing |
| 300 | * except for the member itself, including all its tags. |
| 301 | * The decoding is completed. |
| 302 | */ |
| 303 | NEXT_PHASE(ctx); |
| 304 | break; |
| 305 | } |
| 306 | |
| 307 | /* |
| 308 | * Read in the "end of data chunks"'s. |
| 309 | */ |
| 310 | while(ctx->left < 0) { |
| 311 | ssize_t tl; |
| 312 | |
| 313 | tl = ber_fetch_tag(ptr, LEFT, &tlv_tag); |
| 314 | switch(tl) { |
| 315 | case 0: if(!SIZE_VIOLATION) RETURN(RC_WMORE); |
| 316 | /* Fall through */ |
| 317 | case -1: RETURN(RC_FAIL); |
| 318 | } |
| 319 | |
| 320 | /* |
| 321 | * Expected <0><0>... |
| 322 | */ |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 323 | if(((const uint8_t *)ptr)[0] == 0) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 324 | if(LEFT < 2) { |
| 325 | if(SIZE_VIOLATION) |
| 326 | RETURN(RC_FAIL); |
| 327 | else |
| 328 | RETURN(RC_WMORE); |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 329 | } else if(((const uint8_t *)ptr)[1] == 0) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 330 | /* |
| 331 | * Correctly finished with <0><0>. |
| 332 | */ |
vlm | e1ecb06 | 2004-10-05 06:36:02 +0000 | [diff] [blame] | 333 | ADVANCE(2); |
| 334 | ctx->left++; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 335 | continue; |
| 336 | } |
| 337 | } else { |
| 338 | ASN_DEBUG("Unexpected continuation in %s", |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 339 | td->name); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 340 | RETURN(RC_FAIL); |
| 341 | } |
| 342 | |
vlm | e1ecb06 | 2004-10-05 06:36:02 +0000 | [diff] [blame] | 343 | /* UNREACHABLE */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 344 | } |
| 345 | |
| 346 | NEXT_PHASE(ctx); |
| 347 | case 4: |
| 348 | /* No meaningful work here */ |
| 349 | break; |
| 350 | } |
| 351 | |
| 352 | RETURN(RC_OK); |
| 353 | } |
| 354 | |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 355 | asn_enc_rval_t |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 356 | CHOICE_encode_der(asn_TYPE_descriptor_t *td, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 357 | void *struct_ptr, |
| 358 | int tag_mode, ber_tlv_tag_t tag, |
| 359 | asn_app_consume_bytes_f *cb, void *app_key) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 360 | asn_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics; |
| 361 | asn_TYPE_member_t *elm; /* CHOICE element */ |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 362 | asn_enc_rval_t erval; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 363 | void *memb_ptr; |
| 364 | size_t computed_size = 0; |
| 365 | int present; |
| 366 | |
| 367 | ASN_DEBUG("%s %s as CHOICE", |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 368 | cb?"Encoding":"Estimating", td->name); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 369 | |
| 370 | present = _fetch_present_idx(struct_ptr, |
| 371 | specs->pres_offset, specs->pres_size); |
| 372 | |
| 373 | /* |
| 374 | * If the structure was not initialized, it cannot be encoded: |
| 375 | * can't deduce what to encode in the choice type. |
| 376 | */ |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 377 | if(present <= 0 || present > td->elements_count) { |
| 378 | if(present == 0 && td->elements_count == 0) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 379 | /* The CHOICE is empty?! */ |
| 380 | erval.encoded = 0; |
| 381 | return erval; |
| 382 | } |
| 383 | erval.encoded = -1; |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 384 | erval.failed_type = td; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 385 | erval.structure_ptr = struct_ptr; |
| 386 | return erval; |
| 387 | } |
| 388 | |
| 389 | /* |
| 390 | * Seek over the present member of the structure. |
| 391 | */ |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 392 | elm = &td->elements[present-1]; |
vlm | ddd5a7d | 2004-09-10 09:18:20 +0000 | [diff] [blame] | 393 | if(elm->flags & ATF_POINTER) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 394 | memb_ptr = *(void **)((char *)struct_ptr + elm->memb_offset); |
| 395 | if(memb_ptr == 0) { |
vlm | ddd5a7d | 2004-09-10 09:18:20 +0000 | [diff] [blame] | 396 | if(elm->optional) { |
| 397 | erval.encoded = 0; |
| 398 | } else { |
| 399 | /* Mandatory element absent */ |
| 400 | erval.encoded = -1; |
| 401 | erval.failed_type = td; |
| 402 | erval.structure_ptr = struct_ptr; |
| 403 | } |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 404 | return erval; |
| 405 | } |
| 406 | } else { |
| 407 | memb_ptr = (void *)((char *)struct_ptr + elm->memb_offset); |
| 408 | } |
| 409 | |
| 410 | /* |
| 411 | * If the CHOICE itself is tagged EXPLICIT: |
| 412 | * T ::= [2] EXPLICIT CHOICE { ... } |
| 413 | * Then emit the appropriate tags. |
| 414 | */ |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 415 | if(tag_mode == 1 || td->tags_count) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 416 | /* |
| 417 | * For this, we need to pre-compute the member. |
| 418 | */ |
| 419 | ssize_t ret; |
| 420 | |
| 421 | /* Encode member with its tag */ |
| 422 | erval = elm->type->der_encoder(elm->type, memb_ptr, |
| 423 | elm->tag_mode, elm->tag, 0, 0); |
| 424 | if(erval.encoded == -1) |
| 425 | return erval; |
| 426 | |
| 427 | /* Encode CHOICE with parent or my own tag */ |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 428 | ret = der_write_tags(td, erval.encoded, tag_mode, 1, tag, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 429 | cb, app_key); |
| 430 | if(ret == -1) { |
| 431 | erval.encoded = -1; |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 432 | erval.failed_type = td; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 433 | erval.structure_ptr = struct_ptr; |
| 434 | return erval; |
| 435 | } |
| 436 | computed_size += ret; |
| 437 | } |
| 438 | |
| 439 | /* |
| 440 | * Encode the single underlying member. |
| 441 | */ |
| 442 | erval = elm->type->der_encoder(elm->type, memb_ptr, |
| 443 | elm->tag_mode, elm->tag, cb, app_key); |
| 444 | if(erval.encoded == -1) |
| 445 | return erval; |
| 446 | |
| 447 | ASN_DEBUG("Encoded CHOICE member in %ld bytes (+%ld)", |
| 448 | (long)erval.encoded, (long)computed_size); |
| 449 | |
| 450 | erval.encoded += computed_size; |
| 451 | |
| 452 | return erval; |
| 453 | } |
| 454 | |
| 455 | ber_tlv_tag_t |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 456 | CHOICE_outmost_tag(asn_TYPE_descriptor_t *td, const void *ptr, int tag_mode, ber_tlv_tag_t tag) { |
| 457 | asn_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 458 | int present; |
| 459 | |
| 460 | assert(tag_mode == 0); |
| 461 | assert(tag == 0); |
| 462 | |
| 463 | /* |
| 464 | * Figure out which CHOICE element is encoded. |
| 465 | */ |
| 466 | present = _fetch_present_idx(ptr, specs->pres_offset, specs->pres_size); |
| 467 | |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 468 | if(present > 0 || present <= td->elements_count) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 469 | asn_TYPE_member_t *elm = &td->elements[present-1]; |
vlm | 4d951ef | 2004-06-05 01:45:48 +0000 | [diff] [blame] | 470 | const void *memb_ptr; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 471 | |
vlm | ddd5a7d | 2004-09-10 09:18:20 +0000 | [diff] [blame] | 472 | if(elm->flags & ATF_POINTER) { |
vlm | 4d951ef | 2004-06-05 01:45:48 +0000 | [diff] [blame] | 473 | memb_ptr = *(const void * const *) |
| 474 | ((const char *)ptr + elm->memb_offset); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 475 | } else { |
vlm | 4d951ef | 2004-06-05 01:45:48 +0000 | [diff] [blame] | 476 | memb_ptr = (const void *) |
| 477 | ((const char *)ptr + elm->memb_offset); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 478 | } |
| 479 | |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 480 | return asn_TYPE_outmost_tag(elm->type, memb_ptr, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 481 | elm->tag_mode, elm->tag); |
| 482 | } else { |
vlm | 1ff928d | 2004-08-11 08:10:13 +0000 | [diff] [blame] | 483 | return (ber_tlv_tag_t)-1; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 484 | } |
| 485 | } |
| 486 | |
| 487 | int |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 488 | CHOICE_constraint(asn_TYPE_descriptor_t *td, const void *sptr, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 489 | asn_app_consume_bytes_f *app_errlog, void *app_key) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 490 | asn_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 491 | int present; |
| 492 | |
| 493 | if(!sptr) { |
vlm | e3f0f28 | 2004-08-11 09:44:13 +0000 | [diff] [blame] | 494 | _ASN_ERRLOG(app_errlog, app_key, |
vlm | 758530a | 2004-08-22 13:47:59 +0000 | [diff] [blame] | 495 | "%s: value not given (%s:%d)", |
| 496 | td->name, __FILE__, __LINE__); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 497 | return -1; |
| 498 | } |
| 499 | |
| 500 | /* |
| 501 | * Figure out which CHOICE element is encoded. |
| 502 | */ |
| 503 | present = _fetch_present_idx(sptr, specs->pres_offset,specs->pres_size); |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 504 | if(present > 0 && present <= td->elements_count) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 505 | asn_TYPE_member_t *elm = &td->elements[present-1]; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 506 | const void *memb_ptr; |
| 507 | |
vlm | ddd5a7d | 2004-09-10 09:18:20 +0000 | [diff] [blame] | 508 | if(elm->flags & ATF_POINTER) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 509 | memb_ptr = *(const void * const *)((const char *)sptr + elm->memb_offset); |
vlm | ddd5a7d | 2004-09-10 09:18:20 +0000 | [diff] [blame] | 510 | if(!memb_ptr) { |
| 511 | if(elm->optional) |
| 512 | return 0; |
| 513 | _ASN_ERRLOG(app_errlog, app_key, |
| 514 | "%s: mandatory CHOICE element %s absent (%s:%d)", |
| 515 | td->name, elm->name, __FILE__, __LINE__); |
| 516 | return -1; |
| 517 | } |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 518 | } else { |
| 519 | memb_ptr = (const void *)((const char *)sptr + elm->memb_offset); |
| 520 | } |
| 521 | |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 522 | if(elm->memb_constraints) { |
| 523 | return elm->memb_constraints(elm->type, memb_ptr, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 524 | app_errlog, app_key); |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 525 | } else { |
| 526 | int ret = elm->type->check_constraints(elm->type, |
| 527 | memb_ptr, app_errlog, app_key); |
| 528 | /* |
| 529 | * Cannot inherit it eralier: |
| 530 | * need to make sure we get the updated version. |
| 531 | */ |
| 532 | elm->memb_constraints = elm->type->check_constraints; |
| 533 | return ret; |
| 534 | } |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 535 | } else { |
vlm | e3f0f28 | 2004-08-11 09:44:13 +0000 | [diff] [blame] | 536 | _ASN_ERRLOG(app_errlog, app_key, |
vlm | 63a2ec9 | 2004-08-22 13:55:49 +0000 | [diff] [blame] | 537 | "%s: no CHOICE element given (%s:%d)", |
vlm | 758530a | 2004-08-22 13:47:59 +0000 | [diff] [blame] | 538 | td->name, __FILE__, __LINE__); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 539 | return -1; |
| 540 | } |
| 541 | } |
| 542 | |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 543 | #undef XER_ADVANCE |
| 544 | #define XER_ADVANCE(num_bytes) do { \ |
| 545 | size_t num = num_bytes; \ |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 546 | buf_ptr = ((const char *)buf_ptr) + num;\ |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 547 | size -= num; \ |
| 548 | consumed_myself += num; \ |
| 549 | } while(0) |
| 550 | |
vlm | 390a902 | 2005-02-14 17:21:22 +0000 | [diff] [blame] | 551 | /* |
| 552 | * Decode the XER (XML) data. |
| 553 | */ |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 554 | asn_dec_rval_t |
| 555 | CHOICE_decode_xer(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, |
| 556 | void **struct_ptr, const char *opt_mname, |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 557 | const void *buf_ptr, size_t size) { |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 558 | /* |
| 559 | * Bring closer parts of structure description. |
| 560 | */ |
| 561 | asn_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics; |
| 562 | const char *xml_tag = opt_mname ? opt_mname : td->xml_tag; |
| 563 | |
| 564 | /* |
| 565 | * Parts of the structure being constructed. |
| 566 | */ |
| 567 | void *st = *struct_ptr; /* Target structure. */ |
| 568 | asn_struct_ctx_t *ctx; /* Decoder context */ |
| 569 | |
vlm | 390a902 | 2005-02-14 17:21:22 +0000 | [diff] [blame] | 570 | asn_dec_rval_t rval; /* Return value of a decoder */ |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 571 | ssize_t consumed_myself = 0; /* Consumed bytes from ptr */ |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 572 | int edx; /* Element index */ |
| 573 | |
| 574 | /* |
| 575 | * Create the target structure if it is not present already. |
| 576 | */ |
| 577 | if(st == 0) { |
| 578 | st = *struct_ptr = CALLOC(1, specs->struct_size); |
| 579 | if(st == 0) RETURN(RC_FAIL); |
| 580 | } |
| 581 | |
| 582 | /* |
| 583 | * Restore parsing context. |
| 584 | */ |
| 585 | ctx = (asn_struct_ctx_t *)((char *)st + specs->ctx_offset); |
| 586 | |
| 587 | |
| 588 | /* |
| 589 | * Phases of XER/XML processing: |
| 590 | * Phase 0: Check that the opening tag matches our expectations. |
| 591 | * Phase 1: Processing body and reacting on closing tag. |
| 592 | * Phase 2: Processing inner type. |
vlm | eb0faf7 | 2005-02-18 16:23:48 +0000 | [diff] [blame] | 593 | * Phase 3: Only waiting for closing tag. |
| 594 | * Phase 4: Skipping unknown extensions. |
| 595 | * Phase 5: PHASED OUT |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 596 | */ |
vlm | eb0faf7 | 2005-02-18 16:23:48 +0000 | [diff] [blame] | 597 | for(edx = ctx->step; ctx->phase <= 4;) { |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 598 | pxer_chunk_type_e ch_type; /* XER chunk type */ |
| 599 | ssize_t ch_size; /* Chunk size */ |
| 600 | xer_check_tag_e tcv; /* Tag check value */ |
| 601 | asn_TYPE_member_t *elm; |
| 602 | |
| 603 | /* |
| 604 | * Go inside the member. |
| 605 | */ |
| 606 | if(ctx->phase == 2) { |
| 607 | asn_dec_rval_t tmprval; |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 608 | void *memb_ptr; /* Pointer to the member */ |
| 609 | void **memb_ptr2; /* Pointer to that pointer */ |
| 610 | |
vlm | a351c2b | 2004-10-26 10:12:14 +0000 | [diff] [blame] | 611 | elm = &td->elements[edx]; |
| 612 | |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 613 | if(elm->flags & ATF_POINTER) { |
| 614 | /* Member is a pointer to another structure */ |
| 615 | memb_ptr2 = (void **)((char *)st |
| 616 | + elm->memb_offset); |
| 617 | } else { |
| 618 | memb_ptr = (char *)st + elm->memb_offset; |
| 619 | memb_ptr2 = &memb_ptr; |
| 620 | } |
| 621 | |
vlm | 390a902 | 2005-02-14 17:21:22 +0000 | [diff] [blame] | 622 | /* Start/Continue decoding the inner member */ |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 623 | tmprval = elm->type->xer_decoder(opt_codec_ctx, |
| 624 | elm->type, memb_ptr2, elm->name, |
| 625 | buf_ptr, size); |
| 626 | XER_ADVANCE(tmprval.consumed); |
vlm | cb7222f | 2005-02-18 16:10:40 +0000 | [diff] [blame] | 627 | ASN_DEBUG("XER/CHOICE: itdf: code=%d", tmprval.code); |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 628 | if(tmprval.code != RC_OK) |
| 629 | RETURN(tmprval.code); |
vlm | 390a902 | 2005-02-14 17:21:22 +0000 | [diff] [blame] | 630 | assert(_fetch_present_idx(st, |
| 631 | specs->pres_offset, specs->pres_size) == 0); |
| 632 | /* Record what we've got */ |
| 633 | _set_present_idx(st, |
| 634 | specs->pres_offset, specs->pres_size, edx + 1); |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 635 | ctx->phase = 3; |
| 636 | /* Fall through */ |
| 637 | } |
| 638 | |
| 639 | /* |
| 640 | * Get the next part of the XML stream. |
| 641 | */ |
vlm | c70f8f3 | 2005-02-18 18:06:36 +0000 | [diff] [blame] | 642 | ch_size = xer_next_token(&ctx->context, buf_ptr, size, &ch_type); |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 643 | switch(ch_size) { |
| 644 | case -1: RETURN(RC_FAIL); |
vlm | cb7222f | 2005-02-18 16:10:40 +0000 | [diff] [blame] | 645 | case 0: RETURN(RC_WMORE); |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 646 | default: |
| 647 | switch(ch_type) { |
| 648 | case PXER_COMMENT: /* Got XML comment */ |
| 649 | case PXER_TEXT: /* Ignore free-standing text */ |
| 650 | XER_ADVANCE(ch_size); /* Skip silently */ |
| 651 | continue; |
| 652 | case PXER_TAG: |
| 653 | break; /* Check the rest down there */ |
| 654 | } |
| 655 | } |
| 656 | |
vlm | 390a902 | 2005-02-14 17:21:22 +0000 | [diff] [blame] | 657 | tcv = xer_check_tag(buf_ptr, ch_size, xml_tag); |
vlm | eb0faf7 | 2005-02-18 16:23:48 +0000 | [diff] [blame] | 658 | |
| 659 | /* Skip the extensions section */ |
| 660 | if(ctx->phase == 4) { |
| 661 | ASN_DEBUG("skip_unknown(%d, %ld)", |
| 662 | tcv, (long)ctx->left); |
| 663 | switch(xer_skip_unknown(tcv, &ctx->left)) { |
| 664 | case -1: |
| 665 | ctx->phase = 5; |
| 666 | RETURN(RC_FAIL); |
| 667 | continue; |
| 668 | case 1: |
| 669 | ctx->phase = 3; |
vlm | c70f8f3 | 2005-02-18 18:06:36 +0000 | [diff] [blame] | 670 | /* Fall through */ |
vlm | eb0faf7 | 2005-02-18 16:23:48 +0000 | [diff] [blame] | 671 | case 0: |
| 672 | XER_ADVANCE(ch_size); |
| 673 | continue; |
| 674 | case 2: |
| 675 | ctx->phase = 3; |
| 676 | break; |
| 677 | } |
| 678 | } |
| 679 | |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 680 | switch(tcv) { |
| 681 | case XCT_BOTH: |
vlm | 390a902 | 2005-02-14 17:21:22 +0000 | [diff] [blame] | 682 | break; /* No CHOICE? */ |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 683 | case XCT_CLOSING: |
vlm | 390a902 | 2005-02-14 17:21:22 +0000 | [diff] [blame] | 684 | if(ctx->phase != 3) |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 685 | break; |
| 686 | XER_ADVANCE(ch_size); |
vlm | eb0faf7 | 2005-02-18 16:23:48 +0000 | [diff] [blame] | 687 | ctx->phase = 5; /* Phase out */ |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 688 | RETURN(RC_OK); |
| 689 | case XCT_OPENING: |
| 690 | if(ctx->phase == 0) { |
| 691 | XER_ADVANCE(ch_size); |
| 692 | ctx->phase = 1; /* Processing body phase */ |
| 693 | continue; |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 694 | } |
| 695 | /* Fall through */ |
vlm | 957da5b | 2005-02-18 14:23:48 +0000 | [diff] [blame] | 696 | case XCT_UNKNOWN_OP: |
| 697 | case XCT_UNKNOWN_BO: |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 698 | |
| 699 | if(ctx->phase != 1) |
| 700 | break; /* Really unexpected */ |
| 701 | |
| 702 | /* |
vlm | 390a902 | 2005-02-14 17:21:22 +0000 | [diff] [blame] | 703 | * Search which inner member corresponds to this tag. |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 704 | */ |
| 705 | for(edx = 0; edx < td->elements_count; edx++) { |
| 706 | elm = &td->elements[edx]; |
vlm | 390a902 | 2005-02-14 17:21:22 +0000 | [diff] [blame] | 707 | tcv = xer_check_tag(buf_ptr,ch_size,elm->name); |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 708 | switch(tcv) { |
| 709 | case XCT_BOTH: |
| 710 | case XCT_OPENING: |
| 711 | /* |
| 712 | * Process this member. |
| 713 | */ |
| 714 | ctx->step = edx; |
| 715 | ctx->phase = 2; |
| 716 | break; |
vlm | 957da5b | 2005-02-18 14:23:48 +0000 | [diff] [blame] | 717 | case XCT_UNKNOWN_OP: |
| 718 | case XCT_UNKNOWN_BO: |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 719 | continue; |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 720 | default: |
| 721 | edx = td->elements_count; |
| 722 | break; /* Phase out */ |
| 723 | } |
| 724 | break; |
| 725 | } |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 726 | if(edx != td->elements_count) |
| 727 | continue; |
vlm | 957da5b | 2005-02-18 14:23:48 +0000 | [diff] [blame] | 728 | |
| 729 | /* It is expected extension */ |
| 730 | if(specs->extensible) { |
vlm | eb0faf7 | 2005-02-18 16:23:48 +0000 | [diff] [blame] | 731 | ASN_DEBUG("Got anticipated extension"); |
vlm | 957da5b | 2005-02-18 14:23:48 +0000 | [diff] [blame] | 732 | /* |
vlm | eb0faf7 | 2005-02-18 16:23:48 +0000 | [diff] [blame] | 733 | * Check for (XCT_BOTH or XCT_UNKNOWN_BO) |
| 734 | * By using a mask. Only record a pure |
| 735 | * <opening> tags. |
vlm | 957da5b | 2005-02-18 14:23:48 +0000 | [diff] [blame] | 736 | */ |
vlm | eb0faf7 | 2005-02-18 16:23:48 +0000 | [diff] [blame] | 737 | if(tcv & XCT_CLOSING) { |
| 738 | /* Found </extension> without body */ |
| 739 | ctx->phase = 3; /* Terminating */ |
| 740 | } else { |
| 741 | ctx->left = 1; |
| 742 | ctx->phase = 4; /* Skip ...'s */ |
| 743 | } |
| 744 | XER_ADVANCE(ch_size); |
| 745 | continue; |
vlm | 957da5b | 2005-02-18 14:23:48 +0000 | [diff] [blame] | 746 | } |
| 747 | |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 748 | /* Fall through */ |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 749 | default: |
| 750 | break; |
| 751 | } |
| 752 | |
vlm | 390a902 | 2005-02-14 17:21:22 +0000 | [diff] [blame] | 753 | ASN_DEBUG("Unexpected XML tag in CHOICE"); |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 754 | break; |
| 755 | } |
| 756 | |
vlm | eb0faf7 | 2005-02-18 16:23:48 +0000 | [diff] [blame] | 757 | ctx->phase = 5; /* Phase out, just in case */ |
vlm | 6fbdf97 | 2004-10-23 14:57:50 +0000 | [diff] [blame] | 758 | RETURN(RC_FAIL); |
| 759 | } |
| 760 | |
| 761 | |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 762 | asn_enc_rval_t |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 763 | CHOICE_encode_xer(asn_TYPE_descriptor_t *td, void *sptr, |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 764 | int ilevel, enum xer_encoder_flags_e flags, |
| 765 | asn_app_consume_bytes_f *cb, void *app_key) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 766 | asn_CHOICE_specifics_t *specs=(asn_CHOICE_specifics_t *)td->specifics; |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 767 | asn_enc_rval_t er; |
| 768 | int present; |
| 769 | |
| 770 | if(!sptr) |
| 771 | _ASN_ENCODE_FAILED; |
| 772 | |
| 773 | /* |
| 774 | * Figure out which CHOICE element is encoded. |
| 775 | */ |
| 776 | present = _fetch_present_idx(sptr, specs->pres_offset,specs->pres_size); |
| 777 | |
| 778 | if(present <= 0 || present > td->elements_count) { |
| 779 | _ASN_ENCODE_FAILED; |
| 780 | } else { |
| 781 | asn_enc_rval_t tmper; |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 782 | asn_TYPE_member_t *elm = &td->elements[present-1]; |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 783 | void *memb_ptr; |
| 784 | const char *mname = elm->name; |
| 785 | unsigned int mlen = strlen(mname); |
| 786 | |
| 787 | if(elm->flags & ATF_POINTER) { |
| 788 | memb_ptr = *(void **)((char *)sptr + elm->memb_offset); |
| 789 | if(!memb_ptr) _ASN_ENCODE_FAILED; |
| 790 | } else { |
| 791 | memb_ptr = (void *)((char *)sptr + elm->memb_offset); |
| 792 | } |
| 793 | |
| 794 | er.encoded = 0; |
| 795 | |
| 796 | if(!(flags & XER_F_CANONICAL)) _i_ASN_TEXT_INDENT(1, ilevel); |
| 797 | _ASN_CALLBACK3("<", 1, mname, mlen, ">", 1); |
| 798 | |
| 799 | tmper = elm->type->xer_encoder(elm->type, memb_ptr, |
| 800 | ilevel + 1, flags, cb, app_key); |
| 801 | if(tmper.encoded == -1) return tmper; |
| 802 | |
| 803 | _ASN_CALLBACK3("</", 2, mname, mlen, ">", 1); |
| 804 | |
| 805 | er.encoded += 5 + (2 * mlen) + tmper.encoded; |
| 806 | } |
| 807 | |
| 808 | if(!(flags & XER_F_CANONICAL)) _i_ASN_TEXT_INDENT(1, ilevel - 1); |
| 809 | |
| 810 | return er; |
vlm | 84d551b | 2004-10-03 09:13:02 +0000 | [diff] [blame] | 811 | cb_failed: |
| 812 | _ASN_ENCODE_FAILED; |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 813 | } |
| 814 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 815 | int |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 816 | CHOICE_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 817 | asn_app_consume_bytes_f *cb, void *app_key) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 818 | asn_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 819 | int present; |
| 820 | |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 821 | if(!sptr) return (cb("<absent>", 8, app_key) < 0) ? -1 : 0; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 822 | |
| 823 | /* |
| 824 | * Figure out which CHOICE element is encoded. |
| 825 | */ |
| 826 | present = _fetch_present_idx(sptr, specs->pres_offset,specs->pres_size); |
| 827 | |
| 828 | /* |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 829 | * Print that element. |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 830 | */ |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 831 | if(present > 0 && present <= td->elements_count) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 832 | asn_TYPE_member_t *elm = &td->elements[present-1]; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 833 | const void *memb_ptr; |
| 834 | |
vlm | ddd5a7d | 2004-09-10 09:18:20 +0000 | [diff] [blame] | 835 | if(elm->flags & ATF_POINTER) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 836 | memb_ptr = *(const void * const *)((const char *)sptr + elm->memb_offset); |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 837 | if(!memb_ptr) return (cb("<absent>", 8, app_key) < 0) ? -1 : 0; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 838 | } else { |
| 839 | memb_ptr = (const void *)((const char *)sptr + elm->memb_offset); |
| 840 | } |
| 841 | |
| 842 | /* Print member's name and stuff */ |
vlm | ef1b4c0 | 2004-09-23 22:06:26 +0000 | [diff] [blame] | 843 | if(0) { |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 844 | if(cb(elm->name, strlen(elm->name), app_key) < 0 |
| 845 | || cb(": ", 2, app_key) < 0) |
vlm | ef1b4c0 | 2004-09-23 22:06:26 +0000 | [diff] [blame] | 846 | return -1; |
| 847 | } |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 848 | |
| 849 | return elm->type->print_struct(elm->type, memb_ptr, ilevel, |
| 850 | cb, app_key); |
| 851 | } else { |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 852 | return (cb("<absent>", 8, app_key) < 0) ? -1 : 0; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 853 | } |
| 854 | } |
| 855 | |
| 856 | void |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 857 | CHOICE_free(asn_TYPE_descriptor_t *td, void *ptr, int contents_only) { |
| 858 | asn_CHOICE_specifics_t *specs = (asn_CHOICE_specifics_t *)td->specifics; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 859 | int present; |
| 860 | |
| 861 | if(!td || !ptr) |
| 862 | return; |
| 863 | |
| 864 | ASN_DEBUG("Freeing %s as CHOICE", td->name); |
| 865 | |
| 866 | /* |
| 867 | * Figure out which CHOICE element is encoded. |
| 868 | */ |
| 869 | present = _fetch_present_idx(ptr, specs->pres_offset, specs->pres_size); |
| 870 | |
| 871 | /* |
| 872 | * Free that element. |
| 873 | */ |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 874 | if(present > 0 && present <= td->elements_count) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 875 | asn_TYPE_member_t *elm = &td->elements[present-1]; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 876 | void *memb_ptr; |
| 877 | |
vlm | ddd5a7d | 2004-09-10 09:18:20 +0000 | [diff] [blame] | 878 | if(elm->flags & ATF_POINTER) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 879 | memb_ptr = *(void **)((char *)ptr + elm->memb_offset); |
| 880 | if(memb_ptr) |
| 881 | elm->type->free_struct(elm->type, memb_ptr, 0); |
| 882 | } else { |
| 883 | memb_ptr = (void *)((char *)ptr + elm->memb_offset); |
| 884 | elm->type->free_struct(elm->type, memb_ptr, 1); |
| 885 | } |
| 886 | } |
| 887 | |
| 888 | if(!contents_only) { |
| 889 | FREEMEM(ptr); |
| 890 | } |
| 891 | } |
| 892 | |
| 893 | |
| 894 | /* |
| 895 | * The following functions functions offer protection against -fshort-enums, |
| 896 | * compatible with little- and big-endian machines. |
| 897 | * If assertion is triggered, either disable -fshort-enums, or add an entry |
| 898 | * here with the ->pres_size of your target stracture. |
| 899 | * Unless the target structure is packed, the ".present" member |
| 900 | * is guaranteed to be aligned properly. ASN.1 compiler itself does not |
| 901 | * produce packed code. |
| 902 | */ |
vlm | e55716a | 2004-08-11 09:10:59 +0000 | [diff] [blame] | 903 | static int |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 904 | _fetch_present_idx(const void *struct_ptr, int pres_offset, int pres_size) { |
| 905 | const void *present_ptr; |
| 906 | int present; |
| 907 | |
| 908 | present_ptr = ((const char *)struct_ptr) + pres_offset; |
| 909 | |
| 910 | switch(pres_size) { |
| 911 | case sizeof(int): present = *(const int *)present_ptr; break; |
| 912 | case sizeof(short): present = *(const short *)present_ptr; break; |
| 913 | case sizeof(char): present = *(const char *)present_ptr; break; |
| 914 | default: |
| 915 | /* ANSI C mandates enum to be equivalent to integer */ |
| 916 | assert(pres_size != sizeof(int)); |
| 917 | return 0; /* If not aborted, pass back safe value */ |
| 918 | } |
| 919 | |
| 920 | return present; |
| 921 | } |
| 922 | |
vlm | e55716a | 2004-08-11 09:10:59 +0000 | [diff] [blame] | 923 | static void |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 924 | _set_present_idx(void *struct_ptr, int pres_offset, int pres_size, int present) { |
| 925 | void *present_ptr; |
| 926 | present_ptr = ((char *)struct_ptr) + pres_offset; |
| 927 | |
| 928 | switch(pres_size) { |
| 929 | case sizeof(int): *(int *)present_ptr = present; break; |
| 930 | case sizeof(short): *(short *)present_ptr = present; break; |
| 931 | case sizeof(char): *(char *)present_ptr = present; break; |
| 932 | default: |
| 933 | /* ANSI C mandates enum to be equivalent to integer */ |
| 934 | assert(pres_size != sizeof(int)); |
| 935 | } |
| 936 | } |