vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 1 | /*- |
vlm | e745fcd | 2006-09-05 16:18:34 +0000 | [diff] [blame] | 2 | * Copyright (c) 2003, 2004, 2005, 2006 Lev Walkin <vlm@lionet.info>. |
vlm | 31f7a1c | 2005-08-22 14:19:28 +0000 | [diff] [blame] | 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_SET.h> |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 8 | |
vlm | 97ed74f | 2004-08-11 05:58:52 +0000 | [diff] [blame] | 9 | #ifndef WIN32 |
| 10 | #include <netinet/in.h> /* for ntohl() */ |
| 11 | #else |
| 12 | #include <winsock2.h> /* for ntohl() */ |
| 13 | #endif |
| 14 | |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 15 | /* Check that all the mandatory members are present */ |
| 16 | static int _SET_is_populated(asn_TYPE_descriptor_t *td, void *st); |
| 17 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 18 | /* |
| 19 | * Number of bytes left for this structure. |
| 20 | * (ctx->left) indicates the number of bytes _transferred_ for the structure. |
| 21 | * (size) contains the number of bytes in the buffer passed. |
| 22 | */ |
vlm | c519061 | 2004-08-18 04:53:32 +0000 | [diff] [blame] | 23 | #define LEFT ((size<(size_t)ctx->left)?size:(size_t)ctx->left) |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 24 | |
| 25 | /* |
| 26 | * If the subprocessor function returns with an indication that it wants |
| 27 | * more data, it may well be a fatal decoding problem, because the |
| 28 | * size is constrained by the <TLV>'s L, even if the buffer size allows |
| 29 | * reading more data. |
| 30 | * For example, consider the buffer containing the following TLVs: |
| 31 | * <T:5><L:1><V> <T:6>... |
| 32 | * The TLV length clearly indicates that one byte is expected in V, but |
| 33 | * if the V processor returns with "want more data" even if the buffer |
| 34 | * contains way more data than the V processor have seen. |
| 35 | */ |
vlm | b42843a | 2004-06-05 08:17:50 +0000 | [diff] [blame] | 36 | #define SIZE_VIOLATION (ctx->left >= 0 && (size_t)ctx->left <= size) |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 37 | |
| 38 | /* |
| 39 | * This macro "eats" the part of the buffer which is definitely "consumed", |
| 40 | * i.e. was correctly converted into local representation or rightfully skipped. |
| 41 | */ |
vlm | ef1b4c0 | 2004-09-23 22:06:26 +0000 | [diff] [blame] | 42 | #undef ADVANCE |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 43 | #define ADVANCE(num_bytes) do { \ |
| 44 | size_t num = num_bytes; \ |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 45 | ptr = ((const char *)ptr) + num;\ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 46 | size -= num; \ |
| 47 | if(ctx->left >= 0) \ |
| 48 | ctx->left -= num; \ |
| 49 | consumed_myself += num; \ |
| 50 | } while(0) |
| 51 | |
| 52 | /* |
| 53 | * Switch to the next phase of parsing. |
| 54 | */ |
vlm | ef1b4c0 | 2004-09-23 22:06:26 +0000 | [diff] [blame] | 55 | #undef NEXT_PHASE |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 56 | #define NEXT_PHASE(ctx) do { \ |
| 57 | ctx->phase++; \ |
| 58 | ctx->step = 0; \ |
| 59 | } while(0) |
| 60 | |
| 61 | /* |
| 62 | * Return a standardized complex structure. |
| 63 | */ |
vlm | ef1b4c0 | 2004-09-23 22:06:26 +0000 | [diff] [blame] | 64 | #undef RETURN |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 65 | #define RETURN(_code) do { \ |
| 66 | rval.code = _code; \ |
| 67 | rval.consumed = consumed_myself;\ |
| 68 | return rval; \ |
| 69 | } while(0) |
| 70 | |
| 71 | /* |
| 72 | * Tags are canonically sorted in the tag2element map. |
| 73 | */ |
| 74 | static int |
| 75 | _t2e_cmp(const void *ap, const void *bp) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 76 | const asn_TYPE_tag2member_t *a = (const asn_TYPE_tag2member_t *)ap; |
| 77 | const asn_TYPE_tag2member_t *b = (const asn_TYPE_tag2member_t *)bp; |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 78 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 79 | int a_class = BER_TAG_CLASS(a->el_tag); |
| 80 | int b_class = BER_TAG_CLASS(b->el_tag); |
| 81 | |
| 82 | if(a_class == b_class) { |
| 83 | ber_tlv_tag_t a_value = BER_TAG_VALUE(a->el_tag); |
| 84 | ber_tlv_tag_t b_value = BER_TAG_VALUE(b->el_tag); |
| 85 | |
| 86 | if(a_value == b_value) |
| 87 | return 0; |
| 88 | else if(a_value < b_value) |
| 89 | return -1; |
| 90 | else |
| 91 | return 1; |
| 92 | } else if(a_class < b_class) { |
| 93 | return -1; |
| 94 | } else { |
| 95 | return 1; |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | /* |
| 100 | * The decoder of the SET type. |
| 101 | */ |
vlm | 9de248e | 2004-10-20 15:50:55 +0000 | [diff] [blame] | 102 | asn_dec_rval_t |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 103 | SET_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] | 104 | void **struct_ptr, const void *ptr, size_t size, int tag_mode) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 105 | /* |
| 106 | * Bring closer parts of structure description. |
| 107 | */ |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 108 | asn_SET_specifics_t *specs = (asn_SET_specifics_t *)td->specifics; |
| 109 | asn_TYPE_member_t *elements = td->elements; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 110 | |
| 111 | /* |
| 112 | * Parts of the structure being constructed. |
| 113 | */ |
| 114 | void *st = *struct_ptr; /* Target structure. */ |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 115 | asn_struct_ctx_t *ctx; /* Decoder context */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 116 | |
| 117 | ber_tlv_tag_t tlv_tag; /* T from TLV */ |
vlm | 9de248e | 2004-10-20 15:50:55 +0000 | [diff] [blame] | 118 | asn_dec_rval_t rval; /* Return code from subparsers */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 119 | |
| 120 | ssize_t consumed_myself = 0; /* Consumed bytes from ptr */ |
| 121 | int edx; /* SET element's index */ |
| 122 | |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 123 | ASN_DEBUG("Decoding %s as SET", td->name); |
vlm | e745fcd | 2006-09-05 16:18:34 +0000 | [diff] [blame] | 124 | |
| 125 | if(_ASN_STACK_OVERFLOW_CHECK(opt_codec_ctx)) |
| 126 | _ASN_DECODE_FAILED; |
| 127 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 128 | /* |
| 129 | * Create the target structure if it is not present already. |
| 130 | */ |
| 131 | if(st == 0) { |
| 132 | st = *struct_ptr = CALLOC(1, specs->struct_size); |
| 133 | if(st == 0) { |
| 134 | RETURN(RC_FAIL); |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | /* |
| 139 | * Restore parsing context. |
| 140 | */ |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 141 | ctx = (asn_struct_ctx_t *)((char *)st + specs->ctx_offset); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 142 | |
| 143 | /* |
| 144 | * Start to parse where left previously |
| 145 | */ |
| 146 | switch(ctx->phase) { |
| 147 | case 0: |
| 148 | /* |
| 149 | * PHASE 0. |
| 150 | * Check that the set of tags associated with given structure |
| 151 | * perfectly fits our expectations. |
| 152 | */ |
| 153 | |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 154 | rval = ber_check_tags(opt_codec_ctx, td, ctx, ptr, size, |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 155 | tag_mode, 1, &ctx->left, 0); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 156 | if(rval.code != RC_OK) { |
| 157 | ASN_DEBUG("%s tagging check failed: %d", |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 158 | td->name, rval.code); |
vlm | 2ebb08c | 2004-10-05 06:36:44 +0000 | [diff] [blame] | 159 | return rval; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 160 | } |
| 161 | |
| 162 | if(ctx->left >= 0) |
| 163 | ctx->left += rval.consumed; /* ?Substracted below! */ |
| 164 | ADVANCE(rval.consumed); |
| 165 | |
| 166 | NEXT_PHASE(ctx); |
| 167 | |
| 168 | ASN_DEBUG("Structure advertised %ld bytes, " |
| 169 | "buffer contains %ld", (long)ctx->left, (long)size); |
| 170 | |
| 171 | /* Fall through */ |
| 172 | case 1: |
| 173 | /* |
| 174 | * PHASE 1. |
| 175 | * From the place where we've left it previously, |
| 176 | * try to decode the next member from the list of |
| 177 | * this structure's elements. |
vlm | 7e79b8c | 2004-10-28 13:04:02 +0000 | [diff] [blame] | 178 | * Note that elements in BER may arrive out of |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 179 | * order, yet DER mandates that they shall arive in the |
| 180 | * canonical order of their tags. So, there is a room |
| 181 | * for optimization. |
| 182 | */ |
vlm | 7e79b8c | 2004-10-28 13:04:02 +0000 | [diff] [blame] | 183 | for(;; ctx->step = 0) { |
| 184 | asn_TYPE_tag2member_t *t2m; |
| 185 | asn_TYPE_tag2member_t key; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 186 | void *memb_ptr; /* Pointer to the member */ |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 187 | void **memb_ptr2; /* Pointer to that pointer */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 188 | ssize_t tag_len; /* Length of TLV's T */ |
| 189 | |
vlm | 7e79b8c | 2004-10-28 13:04:02 +0000 | [diff] [blame] | 190 | if(ctx->step & 1) { |
| 191 | edx = ctx->step >> 1; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 192 | goto microphase2; |
vlm | 7e79b8c | 2004-10-28 13:04:02 +0000 | [diff] [blame] | 193 | } |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 194 | |
| 195 | /* |
| 196 | * MICROPHASE 1: Synchronize decoding. |
| 197 | */ |
| 198 | |
| 199 | if(ctx->left == 0) |
| 200 | /* |
| 201 | * No more things to decode. |
| 202 | * Exit out of here and check whether all mandatory |
| 203 | * elements have been received (in the next phase). |
| 204 | */ |
| 205 | break; |
| 206 | |
| 207 | /* |
| 208 | * Fetch the T from TLV. |
| 209 | */ |
| 210 | tag_len = ber_fetch_tag(ptr, LEFT, &tlv_tag); |
| 211 | switch(tag_len) { |
| 212 | case 0: if(!SIZE_VIOLATION) RETURN(RC_WMORE); |
| 213 | /* Fall through */ |
| 214 | case -1: RETURN(RC_FAIL); |
| 215 | } |
| 216 | |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 217 | if(ctx->left < 0 && ((const uint8_t *)ptr)[0] == 0) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 218 | if(LEFT < 2) { |
| 219 | if(SIZE_VIOLATION) |
| 220 | RETURN(RC_FAIL); |
| 221 | else |
| 222 | RETURN(RC_WMORE); |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 223 | } else if(((const uint8_t *)ptr)[1] == 0) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 224 | /* |
| 225 | * Found the terminator of the |
| 226 | * indefinite length structure. |
| 227 | * Invoke the generic finalization function. |
| 228 | */ |
| 229 | goto phase3; |
| 230 | } |
| 231 | } |
| 232 | |
vlm | 7e79b8c | 2004-10-28 13:04:02 +0000 | [diff] [blame] | 233 | key.el_tag = tlv_tag; |
vlm | a8f4a4c | 2005-01-17 14:32:45 +0000 | [diff] [blame] | 234 | t2m = (asn_TYPE_tag2member_t *)bsearch(&key, |
vlm | 7e79b8c | 2004-10-28 13:04:02 +0000 | [diff] [blame] | 235 | specs->tag2el, specs->tag2el_count, |
| 236 | sizeof(specs->tag2el[0]), _t2e_cmp); |
| 237 | if(t2m) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 238 | /* |
vlm | 7e79b8c | 2004-10-28 13:04:02 +0000 | [diff] [blame] | 239 | * Found the element corresponding to the tag. |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 240 | */ |
vlm | 7e79b8c | 2004-10-28 13:04:02 +0000 | [diff] [blame] | 241 | edx = t2m->el_no; |
| 242 | ctx->step = (edx << 1) + 1; |
| 243 | ASN_DEBUG("Got tag %s (%s), edx %d", |
| 244 | ber_tlv_tag_string(tlv_tag), td->name, edx); |
| 245 | } else if(specs->extensible == 0) { |
| 246 | ASN_DEBUG("Unexpected tag %s " |
| 247 | "in non-extensible SET %s", |
| 248 | ber_tlv_tag_string(tlv_tag), td->name); |
| 249 | RETURN(RC_FAIL); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 250 | } else { |
vlm | 7e79b8c | 2004-10-28 13:04:02 +0000 | [diff] [blame] | 251 | /* Skip this tag */ |
| 252 | ssize_t skip; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 253 | |
vlm | 7e79b8c | 2004-10-28 13:04:02 +0000 | [diff] [blame] | 254 | ASN_DEBUG("Skipping unknown tag %s", |
| 255 | ber_tlv_tag_string(tlv_tag)); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 256 | |
vlm | 7e79b8c | 2004-10-28 13:04:02 +0000 | [diff] [blame] | 257 | skip = ber_skip_length(opt_codec_ctx, |
| 258 | BER_TLV_CONSTRUCTED(ptr), |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 259 | (const char *)ptr + tag_len, LEFT - tag_len); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 260 | |
vlm | 7e79b8c | 2004-10-28 13:04:02 +0000 | [diff] [blame] | 261 | switch(skip) { |
| 262 | case 0: if(!SIZE_VIOLATION) RETURN(RC_WMORE); |
| 263 | /* Fall through */ |
| 264 | case -1: RETURN(RC_FAIL); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 265 | } |
vlm | 7e79b8c | 2004-10-28 13:04:02 +0000 | [diff] [blame] | 266 | |
| 267 | ADVANCE(skip + tag_len); |
| 268 | continue; /* Try again with the next tag */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 269 | } |
| 270 | |
| 271 | /* |
| 272 | * MICROPHASE 2: Invoke the member-specific decoder. |
| 273 | */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 274 | microphase2: |
| 275 | |
| 276 | /* |
| 277 | * Check for duplications: must not overwrite |
| 278 | * already decoded elements. |
| 279 | */ |
vlm | 1ff928d | 2004-08-11 08:10:13 +0000 | [diff] [blame] | 280 | if(ASN_SET_ISPRESENT2((char *)st + specs->pres_offset, edx)) { |
vlm | e26690f | 2004-07-01 00:47:16 +0000 | [diff] [blame] | 281 | ASN_DEBUG("SET %s: Duplicate element %s (%d)", |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 282 | td->name, elements[edx].name, edx); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 283 | RETURN(RC_FAIL); |
| 284 | } |
| 285 | |
| 286 | /* |
| 287 | * Compute the position of the member inside a structure, |
| 288 | * and also a type of containment (it may be contained |
| 289 | * as pointer or using inline inclusion). |
| 290 | */ |
vlm | ddd5a7d | 2004-09-10 09:18:20 +0000 | [diff] [blame] | 291 | if(elements[edx].flags & ATF_POINTER) { |
| 292 | /* Member is a pointer to another structure */ |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 293 | memb_ptr2 = (void **)((char *)st + elements[edx].memb_offset); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 294 | } else { |
| 295 | /* |
| 296 | * A pointer to a pointer |
| 297 | * holding the start of the structure |
| 298 | */ |
| 299 | memb_ptr = (char *)st + elements[edx].memb_offset; |
| 300 | memb_ptr2 = &memb_ptr; |
| 301 | } |
| 302 | /* |
| 303 | * Invoke the member fetch routine according to member's type |
| 304 | */ |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 305 | rval = elements[edx].type->ber_decoder(opt_codec_ctx, |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 306 | elements[edx].type, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 307 | memb_ptr2, ptr, LEFT, |
| 308 | elements[edx].tag_mode); |
| 309 | switch(rval.code) { |
| 310 | case RC_OK: |
vlm | 1ff928d | 2004-08-11 08:10:13 +0000 | [diff] [blame] | 311 | ASN_SET_MKPRESENT((char *)st + specs->pres_offset, edx); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 312 | break; |
| 313 | case RC_WMORE: /* More data expected */ |
| 314 | if(!SIZE_VIOLATION) { |
| 315 | ADVANCE(rval.consumed); |
| 316 | RETURN(RC_WMORE); |
| 317 | } |
| 318 | /* Fail through */ |
| 319 | case RC_FAIL: /* Fatal error */ |
| 320 | RETURN(RC_FAIL); |
| 321 | } /* switch(rval) */ |
| 322 | |
| 323 | ADVANCE(rval.consumed); |
| 324 | } /* for(all structure members) */ |
| 325 | |
| 326 | phase3: |
| 327 | ctx->phase = 3; |
| 328 | /* Fall through */ |
| 329 | case 3: |
| 330 | case 4: /* Only 00 is expected */ |
| 331 | ASN_DEBUG("SET %s Leftover: %ld, size = %ld", |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 332 | td->name, (long)ctx->left, (long)size); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 333 | |
| 334 | /* |
| 335 | * Skip everything until the end of the SET. |
| 336 | */ |
| 337 | while(ctx->left) { |
| 338 | ssize_t tl, ll; |
| 339 | |
| 340 | tl = ber_fetch_tag(ptr, LEFT, &tlv_tag); |
| 341 | switch(tl) { |
| 342 | case 0: if(!SIZE_VIOLATION) RETURN(RC_WMORE); |
| 343 | /* Fall through */ |
| 344 | case -1: RETURN(RC_FAIL); |
| 345 | } |
| 346 | |
| 347 | /* |
| 348 | * If expected <0><0>... |
| 349 | */ |
| 350 | if(ctx->left < 0 |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 351 | && ((const uint8_t *)ptr)[0] == 0) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 352 | if(LEFT < 2) { |
| 353 | if(SIZE_VIOLATION) |
| 354 | RETURN(RC_FAIL); |
| 355 | else |
| 356 | RETURN(RC_WMORE); |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 357 | } else if(((const uint8_t *)ptr)[1] == 0) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 358 | /* |
| 359 | * Correctly finished with <0><0>. |
| 360 | */ |
| 361 | ADVANCE(2); |
| 362 | ctx->left++; |
| 363 | ctx->phase = 4; |
| 364 | continue; |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | if(specs->extensible == 0 || ctx->phase == 4) { |
| 369 | ASN_DEBUG("Unexpected continuation " |
vlm | 7e79b8c | 2004-10-28 13:04:02 +0000 | [diff] [blame] | 370 | "of a non-extensible type %s " |
| 371 | "(ptr=%02x)", |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 372 | td->name, *(const uint8_t *)ptr); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 373 | RETURN(RC_FAIL); |
| 374 | } |
| 375 | |
vlm | 6130a2f | 2004-09-29 14:19:14 +0000 | [diff] [blame] | 376 | ll = ber_skip_length(opt_codec_ctx, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 377 | BER_TLV_CONSTRUCTED(ptr), |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 378 | (const char *)ptr + tl, LEFT - tl); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 379 | switch(ll) { |
| 380 | case 0: if(!SIZE_VIOLATION) RETURN(RC_WMORE); |
| 381 | /* Fall through */ |
| 382 | case -1: RETURN(RC_FAIL); |
| 383 | } |
| 384 | |
| 385 | ADVANCE(tl + ll); |
| 386 | } |
| 387 | |
| 388 | ctx->phase = 5; |
| 389 | case 5: |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 390 | /* Check that all mandatory elements are present. */ |
| 391 | if(!_SET_is_populated(td, st)) |
| 392 | RETURN(RC_FAIL); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 393 | |
| 394 | NEXT_PHASE(ctx); |
| 395 | } |
| 396 | |
| 397 | RETURN(RC_OK); |
| 398 | } |
| 399 | |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 400 | static int |
| 401 | _SET_is_populated(asn_TYPE_descriptor_t *td, void *st) { |
| 402 | asn_SET_specifics_t *specs = (asn_SET_specifics_t *)td->specifics; |
| 403 | int edx; |
| 404 | |
| 405 | /* |
| 406 | * Check that all mandatory elements are present. |
| 407 | */ |
| 408 | for(edx = 0; edx < td->elements_count; |
| 409 | edx += (8 * sizeof(specs->_mandatory_elements[0]))) { |
| 410 | unsigned int midx, pres, must; |
| 411 | |
| 412 | midx = edx/(8 * sizeof(specs->_mandatory_elements[0])); |
| 413 | pres = ((unsigned int *)((char *)st+specs->pres_offset))[midx]; |
| 414 | must = ntohl(specs->_mandatory_elements[midx]); |
| 415 | |
| 416 | if((pres & must) == must) { |
| 417 | /* |
| 418 | * Yes, everything seems to be in place. |
| 419 | */ |
| 420 | } else { |
| 421 | ASN_DEBUG("One or more mandatory elements " |
| 422 | "of a SET %s %d (%08x.%08x)=%08x " |
| 423 | "are not present", |
| 424 | td->name, |
| 425 | midx, |
| 426 | pres, |
| 427 | must, |
| 428 | (~(pres & must) & must) |
| 429 | ); |
| 430 | return 0; |
| 431 | } |
| 432 | } |
| 433 | |
| 434 | return 1; |
| 435 | } |
| 436 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 437 | /* |
| 438 | * The DER encoder of the SET type. |
| 439 | */ |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 440 | asn_enc_rval_t |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 441 | SET_encode_der(asn_TYPE_descriptor_t *td, |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 442 | void *sptr, int tag_mode, ber_tlv_tag_t tag, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 443 | asn_app_consume_bytes_f *cb, void *app_key) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 444 | asn_SET_specifics_t *specs = (asn_SET_specifics_t *)td->specifics; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 445 | size_t computed_size = 0; |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 446 | asn_enc_rval_t er; |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 447 | int t2m_build_own = (specs->tag2el_count != td->elements_count); |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 448 | asn_TYPE_tag2member_t *t2m; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 449 | int t2m_count; |
| 450 | ssize_t ret; |
| 451 | int edx; |
| 452 | |
| 453 | /* |
| 454 | * Use existing, or build our own tags map. |
| 455 | */ |
| 456 | if(t2m_build_own) { |
vlm | a8f4a4c | 2005-01-17 14:32:45 +0000 | [diff] [blame] | 457 | t2m = (asn_TYPE_tag2member_t *)alloca( |
| 458 | td->elements_count * sizeof(t2m[0])); |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 459 | if(!t2m) _ASN_ENCODE_FAILED; /* There are such platforms */ |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 460 | t2m_count = 0; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 461 | } else { |
| 462 | /* |
| 463 | * There is no untagged CHOICE in this SET. |
| 464 | * Employ existing table. |
| 465 | */ |
| 466 | t2m = specs->tag2el; |
| 467 | t2m_count = specs->tag2el_count; |
| 468 | } |
| 469 | |
| 470 | /* |
| 471 | * Gather the length of the underlying members sequence. |
| 472 | */ |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 473 | for(edx = 0; edx < td->elements_count; edx++) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 474 | asn_TYPE_member_t *elm = &td->elements[edx]; |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 475 | asn_enc_rval_t tmper; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 476 | void *memb_ptr; |
| 477 | |
| 478 | /* |
| 479 | * Compute the length of the encoding of this member. |
| 480 | */ |
vlm | ddd5a7d | 2004-09-10 09:18:20 +0000 | [diff] [blame] | 481 | if(elm->flags & ATF_POINTER) { |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 482 | memb_ptr = *(void **)((char *)sptr + elm->memb_offset); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 483 | if(!memb_ptr) { |
vlm | 31f7a1c | 2005-08-22 14:19:28 +0000 | [diff] [blame] | 484 | if(!elm->optional) |
| 485 | /* Mandatory elements missing */ |
| 486 | _ASN_ENCODE_FAILED; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 487 | if(t2m_build_own) { |
| 488 | t2m[t2m_count].el_no = edx; |
| 489 | t2m[t2m_count].el_tag = 0; |
| 490 | t2m_count++; |
| 491 | } |
| 492 | continue; |
| 493 | } |
| 494 | } else { |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 495 | memb_ptr = (void *)((char *)sptr + elm->memb_offset); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 496 | } |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 497 | tmper = elm->type->der_encoder(elm->type, memb_ptr, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 498 | elm->tag_mode, elm->tag, |
| 499 | 0, 0); |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 500 | if(tmper.encoded == -1) |
| 501 | return tmper; |
| 502 | computed_size += tmper.encoded; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 503 | |
| 504 | /* |
| 505 | * Remember the outmost tag of this member. |
| 506 | */ |
| 507 | if(t2m_build_own) { |
| 508 | t2m[t2m_count].el_no = edx; |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 509 | t2m[t2m_count].el_tag = asn_TYPE_outmost_tag( |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 510 | elm->type, memb_ptr, elm->tag_mode, elm->tag); |
| 511 | t2m_count++; |
| 512 | } else { |
| 513 | /* |
| 514 | * No dynamic sorting is necessary. |
| 515 | */ |
| 516 | } |
| 517 | } |
| 518 | |
| 519 | /* |
| 520 | * Finalize order of the components. |
| 521 | */ |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 522 | assert(t2m_count == td->elements_count); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 523 | if(t2m_build_own) { |
| 524 | /* |
| 525 | * Sort the underlying members according to their |
| 526 | * canonical tags order. DER encoding mandates it. |
| 527 | */ |
| 528 | qsort(t2m, t2m_count, sizeof(specs->tag2el[0]), _t2e_cmp); |
| 529 | } else { |
| 530 | /* |
| 531 | * Tags are already sorted by the compiler. |
| 532 | */ |
| 533 | } |
| 534 | |
| 535 | /* |
| 536 | * Encode the TLV for the sequence itself. |
| 537 | */ |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 538 | ret = der_write_tags(td, computed_size, tag_mode, 1, tag, cb, app_key); |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 539 | if(ret == -1) _ASN_ENCODE_FAILED; |
| 540 | er.encoded = computed_size + ret; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 541 | |
vlm | 337167e | 2005-11-26 11:25:14 +0000 | [diff] [blame] | 542 | if(!cb) _ASN_ENCODED_OK(er); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 543 | |
| 544 | /* |
| 545 | * Encode all members. |
| 546 | */ |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 547 | for(edx = 0; edx < td->elements_count; edx++) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 548 | asn_TYPE_member_t *elm; |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 549 | asn_enc_rval_t tmper; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 550 | void *memb_ptr; |
| 551 | |
| 552 | /* Encode according to the tag order */ |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 553 | elm = &td->elements[t2m[edx].el_no]; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 554 | |
vlm | ddd5a7d | 2004-09-10 09:18:20 +0000 | [diff] [blame] | 555 | if(elm->flags & ATF_POINTER) { |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 556 | memb_ptr = *(void **)((char *)sptr + elm->memb_offset); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 557 | if(!memb_ptr) continue; |
| 558 | } else { |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 559 | memb_ptr = (void *)((char *)sptr + elm->memb_offset); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 560 | } |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 561 | tmper = elm->type->der_encoder(elm->type, memb_ptr, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 562 | elm->tag_mode, elm->tag, |
| 563 | cb, app_key); |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 564 | if(tmper.encoded == -1) |
| 565 | return tmper; |
| 566 | computed_size -= tmper.encoded; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 567 | } |
| 568 | |
| 569 | if(computed_size != 0) { |
| 570 | /* |
| 571 | * Encoded size is not equal to the computed size. |
| 572 | */ |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 573 | _ASN_ENCODE_FAILED; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 574 | } |
| 575 | |
vlm | 337167e | 2005-11-26 11:25:14 +0000 | [diff] [blame] | 576 | _ASN_ENCODED_OK(er); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 577 | } |
| 578 | |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 579 | #undef XER_ADVANCE |
| 580 | #define XER_ADVANCE(num_bytes) do { \ |
| 581 | size_t num = num_bytes; \ |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 582 | buf_ptr = ((const char *)buf_ptr) + num;\ |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 583 | size -= num; \ |
| 584 | consumed_myself += num; \ |
| 585 | } while(0) |
| 586 | |
| 587 | /* |
| 588 | * Decode the XER (XML) data. |
| 589 | */ |
| 590 | asn_dec_rval_t |
| 591 | SET_decode_xer(asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td, |
| 592 | void **struct_ptr, const char *opt_mname, |
vlm | b02dcc6 | 2005-03-10 18:52:02 +0000 | [diff] [blame] | 593 | const void *buf_ptr, size_t size) { |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 594 | /* |
| 595 | * Bring closer parts of structure description. |
| 596 | */ |
| 597 | asn_SET_specifics_t *specs = (asn_SET_specifics_t *)td->specifics; |
| 598 | asn_TYPE_member_t *elements = td->elements; |
| 599 | const char *xml_tag = opt_mname ? opt_mname : td->xml_tag; |
| 600 | |
| 601 | /* |
| 602 | * ... and parts of the structure being constructed. |
| 603 | */ |
| 604 | void *st = *struct_ptr; /* Target structure. */ |
| 605 | asn_struct_ctx_t *ctx; /* Decoder context */ |
| 606 | |
| 607 | asn_dec_rval_t rval; /* Return value from a decoder */ |
| 608 | ssize_t consumed_myself = 0; /* Consumed bytes from ptr */ |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 609 | int edx; /* Element index */ |
| 610 | |
| 611 | /* |
| 612 | * Create the target structure if it is not present already. |
| 613 | */ |
| 614 | if(st == 0) { |
| 615 | st = *struct_ptr = CALLOC(1, specs->struct_size); |
| 616 | if(st == 0) RETURN(RC_FAIL); |
| 617 | } |
| 618 | |
| 619 | /* |
| 620 | * Restore parsing context. |
| 621 | */ |
| 622 | ctx = (asn_struct_ctx_t *)((char *)st + specs->ctx_offset); |
| 623 | |
| 624 | /* |
| 625 | * Phases of XER/XML processing: |
| 626 | * Phase 0: Check that the opening tag matches our expectations. |
| 627 | * Phase 1: Processing body and reacting on closing tag. |
| 628 | * Phase 2: Processing inner type. |
vlm | cb7222f | 2005-02-18 16:10:40 +0000 | [diff] [blame] | 629 | * Phase 3: Skipping unknown extensions. |
| 630 | * Phase 4: PHASED OUT |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 631 | */ |
vlm | cb7222f | 2005-02-18 16:10:40 +0000 | [diff] [blame] | 632 | for(edx = ctx->step; ctx->phase <= 3;) { |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 633 | pxer_chunk_type_e ch_type; /* XER chunk type */ |
| 634 | ssize_t ch_size; /* Chunk size */ |
| 635 | xer_check_tag_e tcv; /* Tag check value */ |
| 636 | asn_TYPE_member_t *elm; |
| 637 | |
| 638 | /* |
| 639 | * Go inside the inner member of a set. |
| 640 | */ |
| 641 | if(ctx->phase == 2) { |
| 642 | asn_dec_rval_t tmprval; |
| 643 | void *memb_ptr; /* Pointer to the member */ |
| 644 | void **memb_ptr2; /* Pointer to that pointer */ |
| 645 | |
| 646 | if(ASN_SET_ISPRESENT2((char *)st + specs->pres_offset, |
| 647 | edx)) { |
| 648 | ASN_DEBUG("SET %s: Duplicate element %s (%d)", |
| 649 | td->name, elements[edx].name, edx); |
| 650 | RETURN(RC_FAIL); |
| 651 | } |
| 652 | |
vlm | 5f4f4a8 | 2005-02-14 20:15:40 +0000 | [diff] [blame] | 653 | elm = &elements[edx]; |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 654 | |
| 655 | if(elm->flags & ATF_POINTER) { |
| 656 | /* Member is a pointer to another structure */ |
| 657 | memb_ptr2 = (void **)((char *)st |
| 658 | + elm->memb_offset); |
| 659 | } else { |
| 660 | memb_ptr = (char *)st + elm->memb_offset; |
| 661 | memb_ptr2 = &memb_ptr; |
| 662 | } |
| 663 | |
| 664 | /* Invoke the inner type decoder, m.b. multiple times */ |
| 665 | tmprval = elm->type->xer_decoder(opt_codec_ctx, |
| 666 | elm->type, memb_ptr2, elm->name, |
| 667 | buf_ptr, size); |
| 668 | XER_ADVANCE(tmprval.consumed); |
| 669 | if(tmprval.code != RC_OK) |
| 670 | RETURN(tmprval.code); |
| 671 | ctx->phase = 1; /* Back to body processing */ |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 672 | ASN_SET_MKPRESENT((char *)st + specs->pres_offset, edx); |
| 673 | ASN_DEBUG("XER/SET phase => %d", ctx->phase); |
| 674 | /* Fall through */ |
| 675 | } |
| 676 | |
| 677 | /* |
| 678 | * Get the next part of the XML stream. |
| 679 | */ |
vlm | c70f8f3 | 2005-02-18 18:06:36 +0000 | [diff] [blame] | 680 | ch_size = xer_next_token(&ctx->context, |
| 681 | buf_ptr, size, &ch_type); |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 682 | switch(ch_size) { |
| 683 | case -1: RETURN(RC_FAIL); |
vlm | cb7222f | 2005-02-18 16:10:40 +0000 | [diff] [blame] | 684 | case 0: RETURN(RC_WMORE); |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 685 | default: |
| 686 | switch(ch_type) { |
| 687 | case PXER_COMMENT: /* Got XML comment */ |
| 688 | case PXER_TEXT: /* Ignore free-standing text */ |
| 689 | XER_ADVANCE(ch_size); /* Skip silently */ |
| 690 | continue; |
| 691 | case PXER_TAG: |
| 692 | break; /* Check the rest down there */ |
| 693 | } |
| 694 | } |
| 695 | |
| 696 | tcv = xer_check_tag(buf_ptr, ch_size, xml_tag); |
| 697 | ASN_DEBUG("XER/SET: tcv = %d, ph=%d", tcv, ctx->phase); |
vlm | cb7222f | 2005-02-18 16:10:40 +0000 | [diff] [blame] | 698 | |
| 699 | /* Skip the extensions section */ |
| 700 | if(ctx->phase == 3) { |
| 701 | switch(xer_skip_unknown(tcv, &ctx->left)) { |
| 702 | case -1: |
| 703 | ctx->phase = 4; |
| 704 | RETURN(RC_FAIL); |
vlm | c70f8f3 | 2005-02-18 18:06:36 +0000 | [diff] [blame] | 705 | case 1: |
| 706 | ctx->phase = 1; |
| 707 | /* Fall through */ |
vlm | cb7222f | 2005-02-18 16:10:40 +0000 | [diff] [blame] | 708 | case 0: |
| 709 | XER_ADVANCE(ch_size); |
| 710 | continue; |
vlm | cb7222f | 2005-02-18 16:10:40 +0000 | [diff] [blame] | 711 | case 2: |
| 712 | ctx->phase = 1; |
| 713 | break; |
| 714 | } |
| 715 | } |
| 716 | |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 717 | switch(tcv) { |
| 718 | case XCT_CLOSING: |
| 719 | if(ctx->phase == 0) break; |
| 720 | ctx->phase = 0; |
| 721 | /* Fall through */ |
| 722 | case XCT_BOTH: |
| 723 | if(ctx->phase == 0) { |
| 724 | if(_SET_is_populated(td, st)) { |
| 725 | XER_ADVANCE(ch_size); |
vlm | cb7222f | 2005-02-18 16:10:40 +0000 | [diff] [blame] | 726 | ctx->phase = 4; /* Phase out */ |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 727 | RETURN(RC_OK); |
| 728 | } else { |
| 729 | ASN_DEBUG("Premature end of XER SET"); |
| 730 | RETURN(RC_FAIL); |
| 731 | } |
| 732 | } |
| 733 | /* Fall through */ |
| 734 | case XCT_OPENING: |
| 735 | if(ctx->phase == 0) { |
| 736 | XER_ADVANCE(ch_size); |
| 737 | ctx->phase = 1; /* Processing body phase */ |
| 738 | continue; |
| 739 | } |
| 740 | /* Fall through */ |
vlm | 957da5b | 2005-02-18 14:23:48 +0000 | [diff] [blame] | 741 | case XCT_UNKNOWN_OP: |
| 742 | case XCT_UNKNOWN_BO: |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 743 | |
| 744 | ASN_DEBUG("XER/SET: tcv=%d, ph=%d", tcv, ctx->phase); |
| 745 | if(ctx->phase != 1) |
| 746 | break; /* Really unexpected */ |
| 747 | |
| 748 | /* |
| 749 | * Search which member corresponds to this tag. |
| 750 | */ |
| 751 | for(edx = 0; edx < td->elements_count; edx++) { |
vlm | cb7222f | 2005-02-18 16:10:40 +0000 | [diff] [blame] | 752 | switch(xer_check_tag(buf_ptr, ch_size, |
| 753 | elements[edx].name)) { |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 754 | case XCT_BOTH: |
| 755 | case XCT_OPENING: |
| 756 | /* |
| 757 | * Process this member. |
| 758 | */ |
| 759 | ctx->step = edx; |
| 760 | ctx->phase = 2; |
| 761 | break; |
vlm | 957da5b | 2005-02-18 14:23:48 +0000 | [diff] [blame] | 762 | case XCT_UNKNOWN_OP: |
| 763 | case XCT_UNKNOWN_BO: |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 764 | continue; |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 765 | default: |
| 766 | edx = td->elements_count; |
| 767 | break; /* Phase out */ |
| 768 | } |
| 769 | break; |
| 770 | } |
| 771 | if(edx != td->elements_count) |
| 772 | continue; |
vlm | 957da5b | 2005-02-18 14:23:48 +0000 | [diff] [blame] | 773 | |
| 774 | /* It is expected extension */ |
| 775 | if(specs->extensible) { |
vlm | cb7222f | 2005-02-18 16:10:40 +0000 | [diff] [blame] | 776 | ASN_DEBUG("Got anticipated extension"); |
vlm | 957da5b | 2005-02-18 14:23:48 +0000 | [diff] [blame] | 777 | /* |
vlm | cb7222f | 2005-02-18 16:10:40 +0000 | [diff] [blame] | 778 | * Check for (XCT_BOTH or XCT_UNKNOWN_BO) |
| 779 | * By using a mask. Only record a pure |
| 780 | * <opening> tags. |
vlm | 957da5b | 2005-02-18 14:23:48 +0000 | [diff] [blame] | 781 | */ |
vlm | cb7222f | 2005-02-18 16:10:40 +0000 | [diff] [blame] | 782 | if(tcv & XCT_CLOSING) { |
| 783 | /* Found </extension> without body */ |
| 784 | } else { |
| 785 | ctx->left = 1; |
| 786 | ctx->phase = 3; /* Skip ...'s */ |
| 787 | } |
| 788 | XER_ADVANCE(ch_size); |
| 789 | continue; |
vlm | 957da5b | 2005-02-18 14:23:48 +0000 | [diff] [blame] | 790 | } |
| 791 | |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 792 | /* Fall through */ |
| 793 | default: |
| 794 | break; |
| 795 | } |
| 796 | |
vlm | 80a4859 | 2005-02-25 12:10:27 +0000 | [diff] [blame] | 797 | ASN_DEBUG("Unexpected XML tag in SET, expected \"%s\"", |
| 798 | xml_tag); |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 799 | break; |
| 800 | } |
| 801 | |
vlm | cb7222f | 2005-02-18 16:10:40 +0000 | [diff] [blame] | 802 | ctx->phase = 4; /* "Phase out" on hard failure */ |
vlm | c14611c | 2005-02-14 19:03:17 +0000 | [diff] [blame] | 803 | RETURN(RC_FAIL); |
| 804 | } |
| 805 | |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 806 | asn_enc_rval_t |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 807 | SET_encode_xer(asn_TYPE_descriptor_t *td, void *sptr, |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 808 | int ilevel, enum xer_encoder_flags_e flags, |
| 809 | asn_app_consume_bytes_f *cb, void *app_key) { |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 810 | asn_SET_specifics_t *specs = (asn_SET_specifics_t *)td->specifics; |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 811 | asn_enc_rval_t er; |
| 812 | int xcan = (flags & XER_F_CANONICAL); |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 813 | asn_TYPE_tag2member_t *t2m = specs->tag2el_cxer; |
| 814 | int t2m_count = specs->tag2el_cxer_count; |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 815 | int edx; |
| 816 | |
| 817 | if(!sptr) |
| 818 | _ASN_ENCODE_FAILED; |
| 819 | |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 820 | assert(t2m_count == td->elements_count); |
| 821 | |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 822 | er.encoded = 0; |
| 823 | |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 824 | for(edx = 0; edx < t2m_count; edx++) { |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 825 | asn_enc_rval_t tmper; |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 826 | asn_TYPE_member_t *elm; |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 827 | void *memb_ptr; |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 828 | const char *mname; |
| 829 | unsigned int mlen; |
| 830 | |
| 831 | elm = &td->elements[t2m[edx].el_no]; |
| 832 | mname = elm->name; |
| 833 | mlen = strlen(elm->name); |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 834 | |
| 835 | if(elm->flags & ATF_POINTER) { |
| 836 | memb_ptr = *(void **)((char *)sptr + elm->memb_offset); |
vlm | 31f7a1c | 2005-08-22 14:19:28 +0000 | [diff] [blame] | 837 | if(!memb_ptr) { |
| 838 | if(elm->optional) |
| 839 | continue; |
| 840 | /* Mandatory element missing */ |
| 841 | _ASN_ENCODE_FAILED; |
| 842 | } |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 843 | } else { |
| 844 | memb_ptr = (void *)((char *)sptr + elm->memb_offset); |
| 845 | } |
| 846 | |
| 847 | if(!xcan) |
| 848 | _i_ASN_TEXT_INDENT(1, ilevel); |
| 849 | _ASN_CALLBACK3("<", 1, mname, mlen, ">", 1); |
| 850 | |
| 851 | /* Print the member itself */ |
| 852 | tmper = elm->type->xer_encoder(elm->type, memb_ptr, |
| 853 | ilevel + 1, flags, cb, app_key); |
| 854 | if(tmper.encoded == -1) return tmper; |
| 855 | |
| 856 | _ASN_CALLBACK3("</", 2, mname, mlen, ">", 1); |
| 857 | |
| 858 | er.encoded += 5 + (2 * mlen) + tmper.encoded; |
| 859 | } |
| 860 | |
| 861 | if(!xcan) _i_ASN_TEXT_INDENT(1, ilevel - 1); |
| 862 | |
vlm | 337167e | 2005-11-26 11:25:14 +0000 | [diff] [blame] | 863 | _ASN_ENCODED_OK(er); |
vlm | a329666 | 2004-10-03 09:12:07 +0000 | [diff] [blame] | 864 | cb_failed: |
| 865 | _ASN_ENCODE_FAILED; |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 866 | } |
| 867 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 868 | int |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 869 | SET_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 870 | asn_app_consume_bytes_f *cb, void *app_key) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 871 | int edx; |
| 872 | int ret; |
| 873 | |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 874 | if(!sptr) return (cb("<absent>", 8, app_key) < 0) ? -1 : 0; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 875 | |
| 876 | /* Dump preamble */ |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 877 | if(cb(td->name, strlen(td->name), app_key) < 0 |
| 878 | || cb(" ::= {", 6, app_key) < 0) |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 879 | return -1; |
| 880 | |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 881 | for(edx = 0; edx < td->elements_count; edx++) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 882 | asn_TYPE_member_t *elm = &td->elements[edx]; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 883 | const void *memb_ptr; |
| 884 | |
vlm | ddd5a7d | 2004-09-10 09:18:20 +0000 | [diff] [blame] | 885 | if(elm->flags & ATF_POINTER) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 886 | memb_ptr = *(const void * const *)((const char *)sptr + elm->memb_offset); |
vlm | 31f7a1c | 2005-08-22 14:19:28 +0000 | [diff] [blame] | 887 | if(!memb_ptr) { |
| 888 | if(elm->optional) continue; |
| 889 | /* Print <absent> line */ |
| 890 | /* Fall through */ |
| 891 | } |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 892 | } else { |
| 893 | memb_ptr = (const void *)((const char *)sptr + elm->memb_offset); |
| 894 | } |
| 895 | |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 896 | _i_INDENT(1); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 897 | |
| 898 | /* Print the member's name and stuff */ |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 899 | if(cb(elm->name, strlen(elm->name), app_key) < 0 |
| 900 | || cb(": ", 2, app_key) < 0) |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 901 | return -1; |
| 902 | |
| 903 | /* Print the member itself */ |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 904 | ret = elm->type->print_struct(elm->type, memb_ptr, ilevel + 1, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 905 | cb, app_key); |
| 906 | if(ret) return ret; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 907 | } |
| 908 | |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 909 | ilevel--; |
| 910 | _i_INDENT(1); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 911 | |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 912 | return (cb("}", 1, app_key) < 0) ? -1 : 0; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 913 | } |
| 914 | |
| 915 | void |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 916 | SET_free(asn_TYPE_descriptor_t *td, void *ptr, int contents_only) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 917 | int edx; |
| 918 | |
| 919 | if(!td || !ptr) |
| 920 | return; |
| 921 | |
| 922 | ASN_DEBUG("Freeing %s as SET", td->name); |
| 923 | |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 924 | for(edx = 0; edx < td->elements_count; edx++) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 925 | asn_TYPE_member_t *elm = &td->elements[edx]; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 926 | void *memb_ptr; |
vlm | ddd5a7d | 2004-09-10 09:18:20 +0000 | [diff] [blame] | 927 | if(elm->flags & ATF_POINTER) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 928 | memb_ptr = *(void **)((char *)ptr + elm->memb_offset); |
| 929 | if(memb_ptr) |
vlm | be78c80 | 2006-03-17 02:11:12 +0000 | [diff] [blame] | 930 | ASN_STRUCT_FREE(*elm->type, memb_ptr); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 931 | } else { |
| 932 | memb_ptr = (void *)((char *)ptr + elm->memb_offset); |
vlm | be78c80 | 2006-03-17 02:11:12 +0000 | [diff] [blame] | 933 | ASN_STRUCT_FREE_CONTENTS_ONLY(*elm->type, memb_ptr); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 934 | } |
| 935 | } |
| 936 | |
| 937 | if(!contents_only) { |
| 938 | FREEMEM(ptr); |
| 939 | } |
| 940 | } |
| 941 | |
| 942 | int |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 943 | SET_constraint(asn_TYPE_descriptor_t *td, const void *sptr, |
vlm | af68ef5 | 2006-07-13 11:19:01 +0000 | [diff] [blame] | 944 | asn_app_constraint_failed_f *ctfailcb, void *app_key) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 945 | int edx; |
| 946 | |
| 947 | if(!sptr) { |
vlm | af68ef5 | 2006-07-13 11:19:01 +0000 | [diff] [blame] | 948 | _ASN_CTFAIL(app_key, td, |
vlm | 758530a | 2004-08-22 13:47:59 +0000 | [diff] [blame] | 949 | "%s: value not given (%s:%d)", |
| 950 | td->name, __FILE__, __LINE__); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 951 | return -1; |
| 952 | } |
| 953 | |
| 954 | /* |
| 955 | * Iterate over structure members and check their validity. |
| 956 | */ |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 957 | for(edx = 0; edx < td->elements_count; edx++) { |
vlm | ef6355b | 2004-09-29 13:26:15 +0000 | [diff] [blame] | 958 | asn_TYPE_member_t *elm = &td->elements[edx]; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 959 | const void *memb_ptr; |
| 960 | |
vlm | ddd5a7d | 2004-09-10 09:18:20 +0000 | [diff] [blame] | 961 | if(elm->flags & ATF_POINTER) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 962 | memb_ptr = *(const void * const *)((const char *)sptr + elm->memb_offset); |
| 963 | if(!memb_ptr) { |
vlm | ddd5a7d | 2004-09-10 09:18:20 +0000 | [diff] [blame] | 964 | if(elm->optional) |
| 965 | continue; |
vlm | af68ef5 | 2006-07-13 11:19:01 +0000 | [diff] [blame] | 966 | _ASN_CTFAIL(app_key, td, |
vlm | ddd5a7d | 2004-09-10 09:18:20 +0000 | [diff] [blame] | 967 | "%s: mandatory element %s absent (%s:%d)", |
| 968 | td->name, elm->name, __FILE__, __LINE__); |
| 969 | return -1; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 970 | } |
| 971 | } else { |
| 972 | memb_ptr = (const void *)((const char *)sptr + elm->memb_offset); |
| 973 | } |
| 974 | |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 975 | if(elm->memb_constraints) { |
| 976 | int ret = elm->memb_constraints(elm->type, memb_ptr, |
vlm | af68ef5 | 2006-07-13 11:19:01 +0000 | [diff] [blame] | 977 | ctfailcb, app_key); |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 978 | if(ret) return ret; |
| 979 | } else { |
| 980 | int ret = elm->type->check_constraints(elm->type, |
vlm | af68ef5 | 2006-07-13 11:19:01 +0000 | [diff] [blame] | 981 | memb_ptr, ctfailcb, app_key); |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 982 | if(ret) return ret; |
| 983 | /* |
| 984 | * Cannot inherit it earlier: |
| 985 | * need to make sure we get the updated version. |
| 986 | */ |
| 987 | elm->memb_constraints = elm->type->check_constraints; |
| 988 | } |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 989 | } |
| 990 | |
| 991 | return 0; |
| 992 | } |