vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 1 | /*- |
vlm | 72425de | 2004-09-13 08:31:01 +0000 | [diff] [blame] | 2 | * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved. |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 3 | * Redistribution and modifications are permitted subject to BSD license. |
| 4 | */ |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 5 | #include <asn_internal.h> |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 6 | #include <OCTET_STRING.h> |
| 7 | #include <assert.h> |
| 8 | #include <errno.h> |
| 9 | |
| 10 | /* |
| 11 | * OCTET STRING basic type description. |
| 12 | */ |
vlm | 7b75d98 | 2004-09-29 13:20:14 +0000 | [diff] [blame] | 13 | static ber_tlv_tag_t asn_DEF_OCTET_STRING_tags[] = { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 14 | (ASN_TAG_CLASS_UNIVERSAL | (4 << 2)) |
| 15 | }; |
vlm | 7b75d98 | 2004-09-29 13:20:14 +0000 | [diff] [blame] | 16 | asn_TYPE_descriptor_t asn_DEF_OCTET_STRING = { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 17 | "OCTET STRING", |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 18 | OCTET_STRING_free, |
| 19 | OCTET_STRING_print, /* non-ascii stuff, generally */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 20 | asn_generic_no_constraint, |
| 21 | OCTET_STRING_decode_ber, |
| 22 | OCTET_STRING_encode_der, |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 23 | 0, /* Not implemented yet */ |
| 24 | OCTET_STRING_encode_xer, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 25 | 0, /* Use generic outmost tag fetcher */ |
vlm | 7b75d98 | 2004-09-29 13:20:14 +0000 | [diff] [blame] | 26 | asn_DEF_OCTET_STRING_tags, |
| 27 | sizeof(asn_DEF_OCTET_STRING_tags) |
| 28 | / sizeof(asn_DEF_OCTET_STRING_tags[0]), |
| 29 | asn_DEF_OCTET_STRING_tags, /* Same as above */ |
| 30 | sizeof(asn_DEF_OCTET_STRING_tags) |
| 31 | / sizeof(asn_DEF_OCTET_STRING_tags[0]), |
vlm | e413c12 | 2004-08-20 13:23:42 +0000 | [diff] [blame] | 32 | 0, 0, /* No members */ |
vlm | b42843a | 2004-06-05 08:17:50 +0000 | [diff] [blame] | 33 | 0 /* No specifics */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 34 | }; |
| 35 | |
vlm | ef1b4c0 | 2004-09-23 22:06:26 +0000 | [diff] [blame] | 36 | #undef _CH_PHASE |
| 37 | #undef NEXT_PHASE |
| 38 | #undef PREV_PHASE |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 39 | #define _CH_PHASE(ctx, inc) do { \ |
| 40 | if(ctx->phase == 0) \ |
| 41 | ctx->step = 0; \ |
| 42 | ctx->phase += inc; \ |
| 43 | } while(0) |
| 44 | #define NEXT_PHASE(ctx) _CH_PHASE(ctx, +1) |
| 45 | #define PREV_PHASE(ctx) _CH_PHASE(ctx, -1) |
| 46 | |
vlm | ef1b4c0 | 2004-09-23 22:06:26 +0000 | [diff] [blame] | 47 | #undef ADVANCE |
vlm | d86c925 | 2004-08-25 01:34:11 +0000 | [diff] [blame] | 48 | #define ADVANCE(num_bytes) do { \ |
vlm | b33ed68 | 2004-09-24 20:57:41 +0000 | [diff] [blame] | 49 | size_t num = (num_bytes); \ |
vlm | d86c925 | 2004-08-25 01:34:11 +0000 | [diff] [blame] | 50 | buf_ptr = ((char *)buf_ptr) + num; \ |
| 51 | size -= num; \ |
| 52 | consumed_myself += num; \ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 53 | } while(0) |
| 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 | |
vlm | ef1b4c0 | 2004-09-23 22:06:26 +0000 | [diff] [blame] | 62 | #undef APPEND |
vlm | b42843a | 2004-06-05 08:17:50 +0000 | [diff] [blame] | 63 | #define APPEND(bufptr, bufsize) do { \ |
vlm | cdfdb72 | 2004-09-04 04:44:50 +0000 | [diff] [blame] | 64 | size_t _bs = (bufsize); \ |
vlm | b42843a | 2004-06-05 08:17:50 +0000 | [diff] [blame] | 65 | size_t _ns = ctx->step; /* Allocated */ \ |
vlm | cdfdb72 | 2004-09-04 04:44:50 +0000 | [diff] [blame] | 66 | if(_ns <= (size_t)(st->size + _bs)) { \ |
vlm | b42843a | 2004-06-05 08:17:50 +0000 | [diff] [blame] | 67 | void *ptr; \ |
vlm | 72425de | 2004-09-13 08:31:01 +0000 | [diff] [blame] | 68 | /* Be nice and round to the memory allocator */ \ |
vlm | b42843a | 2004-06-05 08:17:50 +0000 | [diff] [blame] | 69 | do { _ns = _ns ? _ns<<2 : 16; } \ |
vlm | cdfdb72 | 2004-09-04 04:44:50 +0000 | [diff] [blame] | 70 | while(_ns <= (size_t)(st->size + _bs)); \ |
vlm | b42843a | 2004-06-05 08:17:50 +0000 | [diff] [blame] | 71 | ptr = REALLOC(st->buf, _ns); \ |
| 72 | if(ptr) { \ |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 73 | st->buf = (uint8_t *)ptr; \ |
vlm | b42843a | 2004-06-05 08:17:50 +0000 | [diff] [blame] | 74 | ctx->step = _ns; \ |
| 75 | } else { \ |
| 76 | RETURN(RC_FAIL); \ |
| 77 | } \ |
| 78 | } \ |
vlm | cdfdb72 | 2004-09-04 04:44:50 +0000 | [diff] [blame] | 79 | memcpy(st->buf + st->size, bufptr, _bs); \ |
| 80 | st->size += _bs; \ |
vlm | b42843a | 2004-06-05 08:17:50 +0000 | [diff] [blame] | 81 | if(st->size < 0) \ |
| 82 | /* Why even care?.. JIC */ \ |
| 83 | RETURN(RC_FAIL); \ |
| 84 | /* Convenient nul-termination */ \ |
| 85 | st->buf[st->size] = '\0'; \ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 86 | } while(0) |
| 87 | |
| 88 | /* |
| 89 | * The main reason why ASN.1 is still alive is that too much time and effort |
| 90 | * is necessary for learning it more or less adequately, thus creating a gut |
| 91 | * necessity to demonstrate that aquired skill everywhere afterwards. |
| 92 | * No, I am not going to explain what the following stuff is. |
| 93 | */ |
| 94 | struct _stack_el { |
vlm | b33ed68 | 2004-09-24 20:57:41 +0000 | [diff] [blame] | 95 | ber_tlv_len_t left; /* What's left to read (or -1) */ |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 96 | ber_tlv_len_t got; /* What was actually processed */ |
vlm | 72425de | 2004-09-13 08:31:01 +0000 | [diff] [blame] | 97 | int cont_level; /* Depth of subcontainment */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 98 | int want_nulls; /* Want null "end of content" octets? */ |
| 99 | int bits_chopped; /* Flag in BIT STRING mode */ |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 100 | ber_tlv_tag_t tag; /* For debugging purposes */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 101 | struct _stack_el *prev; |
| 102 | struct _stack_el *next; |
| 103 | }; |
| 104 | struct _stack { |
| 105 | struct _stack_el *tail; |
| 106 | struct _stack_el *cur_ptr; |
| 107 | }; |
| 108 | |
| 109 | static struct _stack_el * |
vlm | b33ed68 | 2004-09-24 20:57:41 +0000 | [diff] [blame] | 110 | OS__add_stack_el(struct _stack *st) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 111 | struct _stack_el *nel; |
| 112 | |
vlm | 72425de | 2004-09-13 08:31:01 +0000 | [diff] [blame] | 113 | /* |
| 114 | * Reuse the old stack frame or allocate a new one. |
| 115 | */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 116 | if(st->cur_ptr && st->cur_ptr->next) { |
| 117 | nel = st->cur_ptr->next; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 118 | nel->bits_chopped = 0; |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 119 | nel->got = 0; |
| 120 | /* Retain the nel->cont_level, it's correct. */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 121 | } else { |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 122 | (void *)nel = CALLOC(1, sizeof(struct _stack_el)); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 123 | if(nel == NULL) |
| 124 | return NULL; |
| 125 | |
| 126 | if(st->tail) { |
vlm | 72425de | 2004-09-13 08:31:01 +0000 | [diff] [blame] | 127 | /* Increase a subcontainment depth */ |
| 128 | nel->cont_level = st->tail->cont_level + 1; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 129 | st->tail->next = nel; |
| 130 | } |
| 131 | nel->prev = st->tail; |
| 132 | st->tail = nel; |
| 133 | } |
| 134 | |
| 135 | st->cur_ptr = nel; |
| 136 | |
| 137 | return nel; |
| 138 | } |
| 139 | |
| 140 | static struct _stack * |
| 141 | _new_stack() { |
| 142 | struct _stack *st; |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 143 | (void *)st = CALLOC(1, sizeof(struct _stack)); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 144 | if(st == NULL) |
| 145 | return NULL; |
| 146 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 147 | return st; |
| 148 | } |
| 149 | |
| 150 | /* |
| 151 | * Decode OCTET STRING type. |
| 152 | */ |
| 153 | ber_dec_rval_t |
vlm | 7b75d98 | 2004-09-29 13:20:14 +0000 | [diff] [blame] | 154 | OCTET_STRING_decode_ber(asn_codec_ctx_t *opt_codec_ctx, |
| 155 | asn_TYPE_descriptor_t *td, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 156 | void **os_structure, void *buf_ptr, size_t size, int tag_mode) { |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 157 | OCTET_STRING_t *st = (OCTET_STRING_t *)*os_structure; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 158 | ber_dec_rval_t rval; |
vlm | 7b75d98 | 2004-09-29 13:20:14 +0000 | [diff] [blame] | 159 | asn_struct_ctx_t *ctx; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 160 | ssize_t consumed_myself = 0; |
| 161 | struct _stack *stck; /* A stack structure */ |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 162 | struct _stack_el *sel = 0; /* Stack element */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 163 | int tlv_constr; |
vlm | 72425de | 2004-09-13 08:31:01 +0000 | [diff] [blame] | 164 | enum type_type_e { |
| 165 | _TT_GENERIC = 0, /* Just a random OCTET STRING */ |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 166 | _TT_BIT_STRING = 1, /* BIT STRING type, a special case */ |
| 167 | _TT_ANY = 2, /* ANY type, a special case too */ |
| 168 | } type_type = (enum type_type_e)(int)td->specifics; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 169 | |
vlm | ef1b4c0 | 2004-09-23 22:06:26 +0000 | [diff] [blame] | 170 | ASN_DEBUG("Decoding %s as %s (frame %ld)", |
| 171 | td->name, |
| 172 | (type_type == _TT_GENERIC) ? "OCTET STRING" : "OS-SpecialCase", |
| 173 | (long)size); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 174 | |
| 175 | /* |
| 176 | * Create the string if does not exist. |
| 177 | */ |
| 178 | if(st == NULL) { |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 179 | (void *)st = *os_structure = CALLOC(1, sizeof(*st)); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 180 | if(st == NULL) |
| 181 | RETURN(RC_FAIL); |
| 182 | } |
| 183 | |
| 184 | /* Restore parsing context */ |
vlm | 7b75d98 | 2004-09-29 13:20:14 +0000 | [diff] [blame] | 185 | ctx = &st->_asn_ctx; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 186 | |
| 187 | switch(ctx->phase) { |
| 188 | case 0: |
| 189 | /* |
| 190 | * Check tags. |
| 191 | */ |
vlm | 7b75d98 | 2004-09-29 13:20:14 +0000 | [diff] [blame] | 192 | rval = ber_check_tags(opt_codec_ctx, td, ctx, |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 193 | buf_ptr, size, tag_mode, -1, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 194 | &ctx->left, &tlv_constr); |
vlm | d7c2ef3 | 2004-10-05 06:35:31 +0000 | [diff] [blame] | 195 | if(rval.code != RC_OK) |
| 196 | return rval; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 197 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 198 | if(tlv_constr) { |
| 199 | /* |
| 200 | * Complex operation, requires stack of expectations. |
| 201 | */ |
| 202 | ctx->ptr = _new_stack(); |
| 203 | if(ctx->ptr) { |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 204 | (void *)stck = ctx->ptr; |
vlm | 72425de | 2004-09-13 08:31:01 +0000 | [diff] [blame] | 205 | if(type_type == _TT_BIT_STRING) { |
vlm | cdfdb72 | 2004-09-04 04:44:50 +0000 | [diff] [blame] | 206 | /* Number of meaningless tail bits */ |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 207 | APPEND("\0", 1); |
| 208 | } |
| 209 | } else { |
| 210 | RETURN(RC_FAIL); |
| 211 | } |
| 212 | } else { |
| 213 | /* |
| 214 | * Jump into stackless primitive decoding. |
| 215 | */ |
| 216 | _CH_PHASE(ctx, 3); |
vlm | 72425de | 2004-09-13 08:31:01 +0000 | [diff] [blame] | 217 | if(type_type == _TT_ANY) |
| 218 | APPEND(buf_ptr, rval.consumed); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 219 | ADVANCE(rval.consumed); |
| 220 | goto phase3; |
| 221 | } |
| 222 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 223 | NEXT_PHASE(ctx); |
| 224 | /* Fall through */ |
| 225 | case 1: |
| 226 | phase1: |
| 227 | /* |
| 228 | * Fill the stack with expectations. |
| 229 | */ |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 230 | (void *)stck = ctx->ptr; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 231 | sel = stck->cur_ptr; |
| 232 | do { |
| 233 | ber_tlv_tag_t tlv_tag; |
| 234 | ber_tlv_len_t tlv_len; |
vlm | 72425de | 2004-09-13 08:31:01 +0000 | [diff] [blame] | 235 | ber_tlv_tag_t expected_tag; |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 236 | ssize_t tl, ll, tlvl; |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 237 | /* This one works even if (sel->left == -1) */ |
| 238 | ssize_t Left = ((!sel||(size_t)sel->left >= size) |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 239 | ?(ssize_t)size:sel->left); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 240 | |
vlm | b33ed68 | 2004-09-24 20:57:41 +0000 | [diff] [blame] | 241 | |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 242 | ASN_DEBUG("%p, s->l=%d, s->wn=%d, s->g=%d\n", sel, |
| 243 | sel?sel->left:0, |
| 244 | sel?sel->want_nulls:0, |
| 245 | sel?sel->got:0 |
| 246 | ); |
| 247 | if(sel && sel->left <= 0 && sel->want_nulls == 0) { |
| 248 | if(sel->prev) { |
| 249 | struct _stack_el *prev = sel->prev; |
| 250 | if(prev->left != -1) { |
| 251 | if(prev->left < sel->got) |
| 252 | RETURN(RC_FAIL); |
| 253 | prev->left -= sel->got; |
| 254 | } |
| 255 | prev->got += sel->got; |
| 256 | sel = stck->cur_ptr = prev; |
| 257 | if(!sel) break; |
| 258 | tlv_constr = 1; |
| 259 | continue; |
| 260 | } else { |
| 261 | sel = stck->cur_ptr = 0; |
| 262 | break; /* Nothing to wait */ |
| 263 | } |
| 264 | } |
| 265 | |
vlm | b33ed68 | 2004-09-24 20:57:41 +0000 | [diff] [blame] | 266 | tl = ber_fetch_tag(buf_ptr, Left, &tlv_tag); |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 267 | ASN_DEBUG("fetch tag(size=%d,L=%d), %sstack, left=%d, wn=%d, tl=%d", |
| 268 | (int)size, Left, sel?"":"!", |
| 269 | sel?sel->left:0, sel?sel->want_nulls:0, tl); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 270 | switch(tl) { |
| 271 | case -1: RETURN(RC_FAIL); |
| 272 | case 0: RETURN(RC_WMORE); |
| 273 | } |
| 274 | |
| 275 | tlv_constr = BER_TLV_CONSTRUCTED(buf_ptr); |
| 276 | |
| 277 | ll = ber_fetch_length(tlv_constr, |
vlm | b33ed68 | 2004-09-24 20:57:41 +0000 | [diff] [blame] | 278 | (char *)buf_ptr + tl, Left - tl, &tlv_len); |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 279 | ASN_DEBUG("Got tag=%s, tc=%d, left=%ld, tl=%d, len=%d, ll=%d", |
vlm | cdfdb72 | 2004-09-04 04:44:50 +0000 | [diff] [blame] | 280 | ber_tlv_tag_string(tlv_tag), tlv_constr, |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 281 | (long)Left, tl, tlv_len, ll); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 282 | switch(ll) { |
| 283 | case -1: RETURN(RC_FAIL); |
| 284 | case 0: RETURN(RC_WMORE); |
| 285 | } |
| 286 | |
vlm | cdfdb72 | 2004-09-04 04:44:50 +0000 | [diff] [blame] | 287 | if(sel && sel->want_nulls |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 288 | && ((uint8_t *)buf_ptr)[0] == 0 |
| 289 | && ((uint8_t *)buf_ptr)[1] == 0) |
| 290 | { |
vlm | cdfdb72 | 2004-09-04 04:44:50 +0000 | [diff] [blame] | 291 | |
| 292 | ASN_DEBUG("Eat EOC; wn=%d--", sel->want_nulls); |
| 293 | |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 294 | if(type_type == _TT_ANY) APPEND("\0\0", 2); |
| 295 | |
| 296 | ADVANCE(2); |
| 297 | sel->got += 2; |
| 298 | if(sel->left != -1) { |
| 299 | sel->left -= 2; /* assert(sel->left >= 2) */ |
| 300 | } |
| 301 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 302 | sel->want_nulls--; |
| 303 | if(sel->want_nulls == 0) { |
| 304 | /* Move to the next expectation */ |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 305 | sel->left = 0; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 306 | tlv_constr = 1; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 307 | } |
vlm | cdfdb72 | 2004-09-04 04:44:50 +0000 | [diff] [blame] | 308 | |
| 309 | continue; |
vlm | 72425de | 2004-09-13 08:31:01 +0000 | [diff] [blame] | 310 | } |
| 311 | |
| 312 | /* |
| 313 | * Set up expected tags, |
| 314 | * depending on ASN.1 type being decoded. |
| 315 | */ |
| 316 | switch(type_type) { |
| 317 | case _TT_BIT_STRING: |
| 318 | /* X.690: 8.6.4.1, NOTE 2 */ |
| 319 | /* Fall through */ |
| 320 | case _TT_GENERIC: |
| 321 | default: |
| 322 | if(sel) { |
| 323 | int level = sel->cont_level; |
| 324 | if(level < td->all_tags_count) { |
| 325 | expected_tag = td->all_tags[level]; |
| 326 | break; |
| 327 | } else if(td->all_tags_count) { |
| 328 | expected_tag = td->all_tags |
| 329 | [td->all_tags_count - 1]; |
| 330 | break; |
| 331 | } |
| 332 | /* else, Fall through */ |
| 333 | } |
| 334 | /* Fall through */ |
| 335 | case _TT_ANY: |
| 336 | expected_tag = tlv_tag; |
| 337 | break; |
| 338 | } |
| 339 | |
| 340 | |
| 341 | if(tlv_tag != expected_tag) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 342 | char buf[2][32]; |
| 343 | ber_tlv_tag_snprint(tlv_tag, |
| 344 | buf[0], sizeof(buf[0])); |
| 345 | ber_tlv_tag_snprint(td->tags[td->tags_count-1], |
| 346 | buf[1], sizeof(buf[1])); |
| 347 | ASN_DEBUG("Tag does not match expectation: %s != %s", |
| 348 | buf[0], buf[1]); |
| 349 | RETURN(RC_FAIL); |
| 350 | } |
| 351 | |
vlm | 7b75d98 | 2004-09-29 13:20:14 +0000 | [diff] [blame] | 352 | tlvl = tl + ll; /* Combined length of T and L encoding */ |
| 353 | if((tlv_len + tlvl) < 0) { |
| 354 | /* tlv_len value is too big */ |
| 355 | ASN_DEBUG("TLV encoding + length (%ld) is too big", |
| 356 | (long)tlv_len); |
| 357 | RETURN(RC_FAIL); |
| 358 | } |
| 359 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 360 | /* |
| 361 | * Append a new expectation. |
| 362 | */ |
vlm | b33ed68 | 2004-09-24 20:57:41 +0000 | [diff] [blame] | 363 | sel = OS__add_stack_el(stck); |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 364 | if(!sel) RETURN(RC_FAIL); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 365 | |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 366 | sel->tag = tlv_tag; |
| 367 | |
| 368 | sel->want_nulls = (tlv_len==-1); |
| 369 | if(sel->prev && sel->prev->left != -1) { |
| 370 | /* Check that the parent frame is big enough */ |
| 371 | if(sel->prev->left < tlvl + (tlv_len==-1?0:tlv_len)) |
| 372 | RETURN(RC_FAIL); |
| 373 | if(tlv_len == -1) |
| 374 | sel->left = sel->prev->left - tlvl; |
| 375 | else |
| 376 | sel->left = tlv_len; |
| 377 | } else { |
| 378 | sel->left = tlv_len; |
| 379 | } |
| 380 | if(type_type == _TT_ANY) APPEND(buf_ptr, tlvl); |
| 381 | sel->got += tlvl; |
| 382 | ADVANCE(tlvl); |
| 383 | |
| 384 | ASN_DEBUG("+EXPECT2 got=%d left=%d, wn=%d, clvl=%d", |
| 385 | sel->got, sel->left, sel->want_nulls, sel->cont_level); |
| 386 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 387 | } while(tlv_constr); |
| 388 | if(sel == NULL) { |
| 389 | /* Finished operation, "phase out" */ |
vlm | 72425de | 2004-09-13 08:31:01 +0000 | [diff] [blame] | 390 | ASN_DEBUG("Phase out"); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 391 | _CH_PHASE(ctx, +3); |
| 392 | break; |
| 393 | } |
| 394 | |
| 395 | NEXT_PHASE(ctx); |
| 396 | /* Fall through */ |
| 397 | case 2: |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 398 | (void *)stck = ctx->ptr; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 399 | sel = stck->cur_ptr; |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 400 | ASN_DEBUG("Phase 2: Need %ld bytes, size=%ld, alrg=%ld, wn=%d", |
| 401 | (long)sel->left, (long)size, (long)sel->got, |
| 402 | sel->want_nulls); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 403 | { |
| 404 | ber_tlv_len_t len; |
| 405 | |
| 406 | assert(sel->left >= 0); |
| 407 | |
vlm | c519061 | 2004-08-18 04:53:32 +0000 | [diff] [blame] | 408 | len = ((ber_tlv_len_t)size < sel->left) |
| 409 | ? (ber_tlv_len_t)size : sel->left; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 410 | if(len > 0) { |
vlm | 72425de | 2004-09-13 08:31:01 +0000 | [diff] [blame] | 411 | if(type_type == _TT_BIT_STRING |
| 412 | && sel->bits_chopped == 0) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 413 | /* |
| 414 | * Finalize the previous chunk: |
| 415 | * strip down unused bits. |
| 416 | */ |
| 417 | st->buf[st->size-1] &= 0xff << st->buf[0]; |
| 418 | |
vlm | 1ff928d | 2004-08-11 08:10:13 +0000 | [diff] [blame] | 419 | APPEND(((char *)buf_ptr+1), (len - 1)); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 420 | st->buf[0] = *(uint8_t *)buf_ptr; |
| 421 | sel->bits_chopped = 1; |
| 422 | } else { |
| 423 | APPEND(buf_ptr, len); |
| 424 | } |
| 425 | ADVANCE(len); |
| 426 | sel->left -= len; |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 427 | sel->got += len; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 428 | } |
| 429 | |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 430 | if(sel->left) { |
| 431 | ASN_DEBUG("OS left %ld, size = %ld, wn=%d\n", |
| 432 | (long)sel->left, (long)size, sel->want_nulls); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 433 | RETURN(RC_WMORE); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 434 | } |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 435 | |
| 436 | PREV_PHASE(ctx); |
| 437 | goto phase1; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 438 | } |
| 439 | break; |
| 440 | case 3: |
| 441 | phase3: |
| 442 | /* |
| 443 | * Primitive form, no stack required. |
| 444 | */ |
vlm | b42843a | 2004-06-05 08:17:50 +0000 | [diff] [blame] | 445 | if(size < (size_t)ctx->left) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 446 | APPEND(buf_ptr, size); |
| 447 | ctx->left -= size; |
| 448 | ADVANCE(size); |
| 449 | RETURN(RC_WMORE); |
| 450 | } else { |
| 451 | APPEND(buf_ptr, ctx->left); |
| 452 | ADVANCE(ctx->left); |
| 453 | ctx->left = 0; |
| 454 | |
| 455 | NEXT_PHASE(ctx); |
| 456 | } |
| 457 | break; |
| 458 | } |
| 459 | |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 460 | if(sel) { |
| 461 | ASN_DEBUG("3sel p=%p, wn=%d, l=%ld, g=%ld, size=%ld", |
| 462 | sel->prev, sel->want_nulls, |
| 463 | (long)sel->left, (long)sel->got, (long)size); |
| 464 | if(sel->prev || sel->want_nulls > 1 || sel->left > 0) { |
| 465 | RETURN(RC_WMORE); |
| 466 | } |
| 467 | } |
| 468 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 469 | /* |
| 470 | * BIT STRING-specific processing. |
| 471 | */ |
vlm | 72425de | 2004-09-13 08:31:01 +0000 | [diff] [blame] | 472 | if(type_type == _TT_BIT_STRING && st->size >= 2) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 473 | /* Finalize BIT STRING: zero out unused bits. */ |
| 474 | st->buf[st->size-1] &= 0xff << st->buf[0]; |
| 475 | } |
| 476 | |
| 477 | ASN_DEBUG("Took %d bytes to encode %s: [%s]:%d", |
vlm | b33ed68 | 2004-09-24 20:57:41 +0000 | [diff] [blame] | 478 | consumed_myself, td->name, |
| 479 | (type_type == _TT_GENERIC) ? (char *)st->buf : "", st->size); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 480 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 481 | |
vlm | db6b290 | 2004-09-27 20:54:06 +0000 | [diff] [blame] | 482 | RETURN(RC_OK); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 483 | } |
| 484 | |
| 485 | /* |
| 486 | * Encode OCTET STRING type using DER. |
| 487 | */ |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 488 | asn_enc_rval_t |
vlm | 7b75d98 | 2004-09-29 13:20:14 +0000 | [diff] [blame] | 489 | OCTET_STRING_encode_der(asn_TYPE_descriptor_t *td, void *ptr, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 490 | int tag_mode, ber_tlv_tag_t tag, |
| 491 | asn_app_consume_bytes_f *cb, void *app_key) { |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 492 | asn_enc_rval_t erval; |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 493 | OCTET_STRING_t *st = (OCTET_STRING_t *)ptr; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 494 | int add_byte = 0; |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 495 | int is_bit_str = (td->specifics == (void *)1); |
| 496 | int is_ANY_type = (td->specifics == (void *)2); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 497 | |
| 498 | ASN_DEBUG("%s %s as OCTET STRING", |
vlm | 3e69302 | 2004-09-02 12:57:25 +0000 | [diff] [blame] | 499 | cb?"Estimating":"Encoding", td->name); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 500 | |
| 501 | /* |
| 502 | * Canonicalize BIT STRING. |
| 503 | */ |
vlm | 7e66aa8 | 2004-09-02 12:11:47 +0000 | [diff] [blame] | 504 | if(is_bit_str && st->buf) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 505 | switch(st->size) { |
| 506 | case 0: add_byte = 1; break; |
| 507 | case 1: st->buf[0] = 0; break; |
| 508 | default: |
| 509 | /* Finalize BIT STRING: zero out unused bits. */ |
| 510 | st->buf[st->size-1] &= 0xff << st->buf[0]; |
| 511 | } |
| 512 | } |
| 513 | |
vlm | 7e66aa8 | 2004-09-02 12:11:47 +0000 | [diff] [blame] | 514 | if(is_ANY_type) { |
| 515 | erval.encoded = 0; |
| 516 | } else { |
vlm | 3e69302 | 2004-09-02 12:57:25 +0000 | [diff] [blame] | 517 | erval.encoded = der_write_tags(td, st->size + add_byte, |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 518 | tag_mode, 0, tag, cb, app_key); |
vlm | 7e66aa8 | 2004-09-02 12:11:47 +0000 | [diff] [blame] | 519 | if(erval.encoded == -1) { |
vlm | 3e69302 | 2004-09-02 12:57:25 +0000 | [diff] [blame] | 520 | erval.failed_type = td; |
vlm | 7e66aa8 | 2004-09-02 12:11:47 +0000 | [diff] [blame] | 521 | erval.structure_ptr = ptr; |
| 522 | return erval; |
| 523 | } |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 524 | } |
| 525 | |
| 526 | if(cb) { |
| 527 | uint8_t zero; |
| 528 | uint8_t *buf; |
| 529 | int size; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 530 | |
| 531 | /* BIT STRING-aware handling */ |
| 532 | if(add_byte) { |
| 533 | zero = 0; |
| 534 | buf = &zero; |
| 535 | size = 1; |
| 536 | } else if(st->buf) { |
| 537 | buf = st->buf; |
| 538 | size = st->size; |
| 539 | } else { |
| 540 | assert(st->size == 0); |
| 541 | buf = 0; /* Not used */ |
| 542 | size = 0; |
| 543 | } |
| 544 | |
| 545 | if(size) { |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 546 | if(cb(buf, size, app_key) < 0) { |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 547 | erval.encoded = -1; |
vlm | 3e69302 | 2004-09-02 12:57:25 +0000 | [diff] [blame] | 548 | erval.failed_type = td; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 549 | erval.structure_ptr = ptr; |
| 550 | return erval; |
| 551 | } |
| 552 | } |
| 553 | } |
| 554 | |
| 555 | erval.encoded += st->size + add_byte; |
| 556 | |
| 557 | return erval; |
| 558 | } |
| 559 | |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 560 | asn_enc_rval_t |
vlm | 7b75d98 | 2004-09-29 13:20:14 +0000 | [diff] [blame] | 561 | OCTET_STRING_encode_xer(asn_TYPE_descriptor_t *td, void *sptr, |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 562 | int ilevel, enum xer_encoder_flags_e flags, |
| 563 | asn_app_consume_bytes_f *cb, void *app_key) { |
| 564 | static const char *h2c = "0123456789ABCDEF"; |
| 565 | const OCTET_STRING_t *st = (const OCTET_STRING_t *)sptr; |
| 566 | asn_enc_rval_t er; |
| 567 | char scratch[16 * 3 + 4]; |
| 568 | char *p = scratch; |
| 569 | uint8_t *buf; |
| 570 | uint8_t *end; |
| 571 | size_t i; |
| 572 | |
vlm | 84d551b | 2004-10-03 09:13:02 +0000 | [diff] [blame] | 573 | if(!st || !st->buf) |
| 574 | _ASN_ENCODE_FAILED; |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 575 | |
| 576 | er.encoded = 0; |
| 577 | |
| 578 | /* |
| 579 | * Dump the contents of the buffer in hexadecimal. |
| 580 | */ |
| 581 | buf = st->buf; |
| 582 | end = buf + st->size; |
| 583 | if(flags & XER_F_CANONICAL) { |
| 584 | char *scend = scratch + (sizeof(scratch) - 2); |
| 585 | for(; buf < end; buf++) { |
| 586 | if(p >= scend) { |
| 587 | _ASN_CALLBACK(scratch, p - scratch); |
| 588 | er.encoded += p - scratch; |
| 589 | p = scratch; |
| 590 | } |
| 591 | *p++ = h2c[(*buf >> 4) & 0x0F]; |
| 592 | *p++ = h2c[*buf & 0x0F]; |
| 593 | } |
vlm | ef1b4c0 | 2004-09-23 22:06:26 +0000 | [diff] [blame] | 594 | |
| 595 | _ASN_CALLBACK(scratch, p-scratch); /* Dump the rest */ |
| 596 | er.encoded += p - scratch; |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 597 | } else { |
| 598 | for(i = 0; buf < end; buf++, i++) { |
| 599 | if(!(i % 16) && (i || st->size > 16)) { |
| 600 | _ASN_CALLBACK(scratch, p-scratch); |
| 601 | er.encoded += (p-scratch); |
| 602 | p = scratch; |
| 603 | _i_ASN_TEXT_INDENT(1, ilevel); |
| 604 | } |
| 605 | *p++ = h2c[(*buf >> 4) & 0x0F]; |
| 606 | *p++ = h2c[*buf & 0x0F]; |
| 607 | *p++ = 0x20; |
| 608 | } |
vlm | ef1b4c0 | 2004-09-23 22:06:26 +0000 | [diff] [blame] | 609 | if(p - scratch) { |
| 610 | p--; /* Remove the tail space */ |
| 611 | _ASN_CALLBACK(scratch, p-scratch); /* Dump the rest */ |
| 612 | er.encoded += p - scratch; |
| 613 | if(st->size > 16) |
| 614 | _i_ASN_TEXT_INDENT(1, ilevel-1); |
| 615 | } |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 616 | } |
| 617 | |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 618 | return er; |
vlm | 84d551b | 2004-10-03 09:13:02 +0000 | [diff] [blame] | 619 | cb_failed: |
| 620 | _ASN_ENCODE_FAILED; |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 621 | } |
| 622 | |
vlm | 393a57a | 2004-10-03 10:54:25 +0000 | [diff] [blame] | 623 | static struct OCTET_STRING__xer_escape_table_s { |
| 624 | char *string; |
| 625 | int size; |
| 626 | } OCTET_STRING__xer_escape_table[] = { |
| 627 | #define OSXET(s) { s, sizeof(s) - 1 } |
| 628 | OSXET("\074\156\165\154\057\076"), /* <nul/> */ |
| 629 | OSXET("\074\163\157\150\057\076"), /* <soh/> */ |
| 630 | OSXET("\074\163\164\170\057\076"), /* <stx/> */ |
| 631 | OSXET("\074\145\164\170\057\076"), /* <etx/> */ |
| 632 | OSXET("\074\145\157\164\057\076"), /* <eot/> */ |
| 633 | OSXET("\074\145\156\161\057\076"), /* <enq/> */ |
| 634 | OSXET("\074\141\143\153\057\076"), /* <ack/> */ |
| 635 | OSXET("\074\142\145\154\057\076"), /* <bel/> */ |
| 636 | OSXET("\074\142\163\057\076"), /* <bs/> */ |
| 637 | OSXET("\011"), /* \t */ |
| 638 | OSXET("\012"), /* \n */ |
| 639 | OSXET("\074\166\164\057\076"), /* <vt/> */ |
| 640 | OSXET("\074\146\146\057\076"), /* <ff/> */ |
| 641 | OSXET("\015"), /* \r */ |
| 642 | OSXET("\074\163\157\057\076"), /* <so/> */ |
| 643 | OSXET("\074\163\151\057\076"), /* <si/> */ |
| 644 | OSXET("\074\144\154\145\057\076"), /* <dle/> */ |
| 645 | OSXET("\074\144\143\061\057\076"), /* <de1/> */ |
| 646 | OSXET("\074\144\143\062\057\076"), /* <de2/> */ |
| 647 | OSXET("\074\144\143\063\057\076"), /* <de3/> */ |
| 648 | OSXET("\074\144\143\064\057\076"), /* <de4/> */ |
| 649 | OSXET("\074\156\141\153\057\076"), /* <nak/> */ |
| 650 | OSXET("\074\163\171\156\057\076"), /* <syn/> */ |
| 651 | OSXET("\074\145\164\142\057\076"), /* <etb/> */ |
| 652 | OSXET("\074\143\141\156\057\076"), /* <can/> */ |
| 653 | OSXET("\074\145\155\057\076"), /* <em/> */ |
| 654 | OSXET("\074\163\165\142\057\076"), /* <sub/> */ |
| 655 | OSXET("\074\145\163\143\057\076"), /* <esc/> */ |
| 656 | OSXET("\074\151\163\064\057\076"), /* <is4/> */ |
| 657 | OSXET("\074\151\163\063\057\076"), /* <is3/> */ |
| 658 | OSXET("\074\151\163\062\057\076"), /* <is2/> */ |
| 659 | OSXET("\074\151\163\061\057\076"), /* <is1/> */ |
| 660 | { 0, 0 }, /* " " */ |
| 661 | { 0, 0 }, /* ! */ |
| 662 | { 0, 0 }, /* \" */ |
| 663 | { 0, 0 }, /* # */ |
| 664 | { 0, 0 }, /* $ */ |
| 665 | { 0, 0 }, /* % */ |
| 666 | OSXET("\046\141\155\160\073"), /* & */ |
| 667 | { 0, 0 }, /* ' */ |
| 668 | {0,0},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, /* ()*+,-./ */ |
| 669 | {0,0},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, /* 01234567 */ |
| 670 | {0,0},{0,0},{0,0},{0,0}, /* 89:; */ |
| 671 | OSXET("\046\154\164\073"), /* < */ |
| 672 | { 0, 0 }, /* = */ |
| 673 | OSXET("\046\147\164\073"), /* > */ |
| 674 | }; |
| 675 | |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 676 | asn_enc_rval_t |
vlm | 7b75d98 | 2004-09-29 13:20:14 +0000 | [diff] [blame] | 677 | OCTET_STRING_encode_xer_ascii(asn_TYPE_descriptor_t *td, void *sptr, |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 678 | int ilevel, enum xer_encoder_flags_e flags, |
| 679 | asn_app_consume_bytes_f *cb, void *app_key) { |
| 680 | const OCTET_STRING_t *st = (const OCTET_STRING_t *)sptr; |
| 681 | asn_enc_rval_t er; |
vlm | 393a57a | 2004-10-03 10:54:25 +0000 | [diff] [blame] | 682 | uint8_t *buf, *end; |
| 683 | uint8_t *ss; /* Sequence start */ |
| 684 | ssize_t encoded_len = 0; |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 685 | |
| 686 | (void)ilevel; /* Unused argument */ |
| 687 | (void)flags; /* Unused argument */ |
| 688 | |
| 689 | if(!st || !st->buf) |
| 690 | _ASN_ENCODE_FAILED; |
| 691 | |
vlm | 393a57a | 2004-10-03 10:54:25 +0000 | [diff] [blame] | 692 | buf = st->buf; |
| 693 | end = buf + st->size; |
| 694 | for(ss = buf; buf < end; buf++) { |
vlm | d7c2ef3 | 2004-10-05 06:35:31 +0000 | [diff] [blame] | 695 | unsigned int ch = *buf; |
vlm | 393a57a | 2004-10-03 10:54:25 +0000 | [diff] [blame] | 696 | int s_len; /* Special encoding sequence length */ |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 697 | |
vlm | 393a57a | 2004-10-03 10:54:25 +0000 | [diff] [blame] | 698 | /* |
| 699 | * Escape certain characters: X.680/11.15 |
| 700 | */ |
| 701 | if(ch < sizeof(OCTET_STRING__xer_escape_table) |
| 702 | /sizeof(OCTET_STRING__xer_escape_table[0]) |
| 703 | && (s_len = OCTET_STRING__xer_escape_table[ch].size)) { |
| 704 | if(((buf - ss) && cb(ss, buf - ss, app_key) < 0) |
| 705 | || cb(OCTET_STRING__xer_escape_table[ch].string, s_len, |
| 706 | app_key) < 0) |
| 707 | _ASN_ENCODE_FAILED; |
| 708 | encoded_len += (buf - ss) + s_len; |
| 709 | ss = buf + 1; |
| 710 | } |
| 711 | } |
| 712 | |
| 713 | encoded_len += (buf - ss); |
| 714 | if((buf - ss) && cb(ss, buf - ss, app_key) < 0) |
| 715 | _ASN_ENCODE_FAILED; |
| 716 | |
| 717 | er.encoded = encoded_len; |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 718 | return er; |
| 719 | } |
| 720 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 721 | int |
vlm | 7b75d98 | 2004-09-29 13:20:14 +0000 | [diff] [blame] | 722 | OCTET_STRING_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 723 | asn_app_consume_bytes_f *cb, void *app_key) { |
vlm | 1ff928d | 2004-08-11 08:10:13 +0000 | [diff] [blame] | 724 | static const char *h2c = "0123456789ABCDEF"; |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 725 | const OCTET_STRING_t *st = (const OCTET_STRING_t *)sptr; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 726 | char scratch[16 * 3 + 4]; |
| 727 | char *p = scratch; |
| 728 | uint8_t *buf; |
| 729 | uint8_t *end; |
| 730 | size_t i; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 731 | |
vlm | b42843a | 2004-06-05 08:17:50 +0000 | [diff] [blame] | 732 | (void)td; /* Unused argument */ |
| 733 | |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 734 | if(!st || !st->buf) return (cb("<absent>", 8, app_key) < 0) ? -1 : 0; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 735 | |
| 736 | /* |
| 737 | * Dump the contents of the buffer in hexadecimal. |
| 738 | */ |
| 739 | buf = st->buf; |
| 740 | end = buf + st->size; |
| 741 | for(i = 0; buf < end; buf++, i++) { |
| 742 | if(!(i % 16) && (i || st->size > 16)) { |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 743 | if(cb(scratch, p - scratch, app_key) < 0) |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 744 | return -1; |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 745 | _i_INDENT(1); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 746 | p = scratch; |
| 747 | } |
| 748 | *p++ = h2c[(*buf >> 4) & 0x0F]; |
| 749 | *p++ = h2c[*buf & 0x0F]; |
vlm | 39ba4c4 | 2004-09-22 16:06:28 +0000 | [diff] [blame] | 750 | *p++ = 0x20; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 751 | } |
| 752 | |
vlm | ef1b4c0 | 2004-09-23 22:06:26 +0000 | [diff] [blame] | 753 | if(p > scratch) { |
| 754 | p--; /* Remove the tail space */ |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 755 | if(cb(scratch, p - scratch, app_key) < 0) |
vlm | ef1b4c0 | 2004-09-23 22:06:26 +0000 | [diff] [blame] | 756 | return -1; |
| 757 | } |
| 758 | |
| 759 | return 0; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 760 | } |
| 761 | |
| 762 | int |
vlm | 7b75d98 | 2004-09-29 13:20:14 +0000 | [diff] [blame] | 763 | OCTET_STRING_print_ascii(asn_TYPE_descriptor_t *td, const void *sptr, |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 764 | int ilevel, asn_app_consume_bytes_f *cb, void *app_key) { |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 765 | const OCTET_STRING_t *st = (const OCTET_STRING_t *)sptr; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 766 | |
vlm | b42843a | 2004-06-05 08:17:50 +0000 | [diff] [blame] | 767 | (void)td; /* Unused argument */ |
| 768 | (void)ilevel; /* Unused argument */ |
| 769 | |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 770 | if(st && st->buf) { |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 771 | return (cb(st->buf, st->size, app_key) < 0) ? -1 : 0; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 772 | } else { |
vlm | 6678cb1 | 2004-09-26 13:10:40 +0000 | [diff] [blame] | 773 | return (cb("<absent>", 8, app_key) < 0) ? -1 : 0; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 774 | } |
| 775 | } |
| 776 | |
| 777 | void |
vlm | 7b75d98 | 2004-09-29 13:20:14 +0000 | [diff] [blame] | 778 | OCTET_STRING_free(asn_TYPE_descriptor_t *td, void *sptr, int contents_only) { |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 779 | OCTET_STRING_t *st = (OCTET_STRING_t *)sptr; |
vlm | 7b75d98 | 2004-09-29 13:20:14 +0000 | [diff] [blame] | 780 | struct _stack *stck = (struct _stack *)st->_asn_ctx.ptr; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 781 | |
| 782 | if(!td || !st) |
| 783 | return; |
| 784 | |
| 785 | ASN_DEBUG("Freeing %s as OCTET STRING", td->name); |
| 786 | |
| 787 | if(st->buf) { |
| 788 | FREEMEM(st->buf); |
| 789 | } |
| 790 | |
| 791 | /* |
| 792 | * Remove decode-time stack. |
| 793 | */ |
| 794 | if(stck) { |
| 795 | while(stck->tail) { |
| 796 | struct _stack_el *sel = stck->tail; |
| 797 | stck->tail = sel->prev; |
| 798 | FREEMEM(sel); |
| 799 | } |
| 800 | FREEMEM(stck); |
| 801 | } |
| 802 | |
| 803 | if(!contents_only) { |
| 804 | FREEMEM(st); |
| 805 | } |
| 806 | } |
| 807 | |
| 808 | /* |
| 809 | * Conversion routines. |
| 810 | */ |
| 811 | int |
| 812 | OCTET_STRING_fromBuf(OCTET_STRING_t *st, const char *str, int len) { |
| 813 | void *buf; |
| 814 | |
| 815 | if(st == 0 || (str == 0 && len)) { |
| 816 | errno = EINVAL; |
| 817 | return -1; |
| 818 | } |
| 819 | |
| 820 | /* |
| 821 | * Clear the OCTET STRING. |
| 822 | */ |
| 823 | if(str == NULL) { |
| 824 | if(st->buf) |
| 825 | FREEMEM(st->buf); |
| 826 | st->size = 0; |
| 827 | return 0; |
| 828 | } |
| 829 | |
| 830 | /* Determine the original string size, if not explicitly given */ |
| 831 | if(len < 0) |
| 832 | len = strlen(str); |
| 833 | |
| 834 | /* Allocate and fill the memory */ |
| 835 | buf = MALLOC(len + 1); |
| 836 | if(buf == NULL) { |
| 837 | return -1; |
| 838 | } else { |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 839 | st->buf = (uint8_t *)buf; |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 840 | st->size = len; |
| 841 | } |
| 842 | |
| 843 | memcpy(buf, str, len); |
| 844 | st->buf[st->size] = '\0'; /* Couldn't use memcpy(len+1)! */ |
| 845 | |
| 846 | return 0; |
| 847 | } |
| 848 | |
| 849 | OCTET_STRING_t * |
| 850 | OCTET_STRING_new_fromBuf(const char *str, int len) { |
| 851 | OCTET_STRING_t *st; |
| 852 | |
vlm | da67468 | 2004-08-11 09:07:36 +0000 | [diff] [blame] | 853 | (void *)st = CALLOC(1, sizeof(*st)); |
vlm | fa67ddc | 2004-06-03 03:38:44 +0000 | [diff] [blame] | 854 | if(st && str && OCTET_STRING_fromBuf(st, str, len)) { |
| 855 | free(st); |
| 856 | st = NULL; |
| 857 | } |
| 858 | |
| 859 | return st; |
| 860 | } |
| 861 | |