X-Git-Url: https://git.stg.codes/stg.git/blobdiff_plain/8c6fa3fbaccc22127280bf77a48fab5a3ee0716e..46b0747592074017ff0ea4b33d4a7194235886e5:/stglibs/smux.lib/OCTET_STRING.c diff --git a/stglibs/smux.lib/OCTET_STRING.c b/stglibs/smux.lib/OCTET_STRING.c deleted file mode 100644 index 9e9694b5..00000000 --- a/stglibs/smux.lib/OCTET_STRING.c +++ /dev/null @@ -1,1551 +0,0 @@ -/*- - * Copyright (c) 2003, 2004, 2005, 2006 Lev Walkin . - * All rights reserved. - * Redistribution and modifications are permitted subject to BSD license. - */ -#include -#include -#include /* for .bits_unused member */ -#include - -/* - * OCTET STRING basic type description. - */ -static ber_tlv_tag_t asn_DEF_OCTET_STRING_tags[] = { - (ASN_TAG_CLASS_UNIVERSAL | (4 << 2)) -}; -static asn_OCTET_STRING_specifics_t asn_DEF_OCTET_STRING_specs = { - sizeof(OCTET_STRING_t), - offsetof(OCTET_STRING_t, _asn_ctx), - 0 -}; -static asn_per_constraint_t asn_DEF_OCTET_STRING_constraint = { - APC_SEMI_CONSTRAINED, -1, -1, 0, 0 -}; -asn_TYPE_descriptor_t asn_DEF_OCTET_STRING = { - "OCTET STRING", /* Canonical name */ - "OCTET_STRING", /* XML tag name */ - OCTET_STRING_free, - OCTET_STRING_print, /* non-ascii stuff, generally */ - asn_generic_no_constraint, - OCTET_STRING_decode_ber, - OCTET_STRING_encode_der, - OCTET_STRING_decode_xer_hex, - OCTET_STRING_encode_xer, - OCTET_STRING_decode_uper, /* Unaligned PER decoder */ - OCTET_STRING_encode_uper, /* Unaligned PER encoder */ - 0, /* Use generic outmost tag fetcher */ - asn_DEF_OCTET_STRING_tags, - sizeof(asn_DEF_OCTET_STRING_tags) - / sizeof(asn_DEF_OCTET_STRING_tags[0]), - asn_DEF_OCTET_STRING_tags, /* Same as above */ - sizeof(asn_DEF_OCTET_STRING_tags) - / sizeof(asn_DEF_OCTET_STRING_tags[0]), - 0, /* No PER visible constraints */ - 0, 0, /* No members */ - &asn_DEF_OCTET_STRING_specs -}; - -#undef _CH_PHASE -#undef NEXT_PHASE -#undef PREV_PHASE -#define _CH_PHASE(ctx, inc) do { \ - if(ctx->phase == 0) \ - ctx->context = 0; \ - ctx->phase += inc; \ - } while(0) -#define NEXT_PHASE(ctx) _CH_PHASE(ctx, +1) -#define PREV_PHASE(ctx) _CH_PHASE(ctx, -1) - -#undef ADVANCE -#define ADVANCE(num_bytes) do { \ - size_t num = (num_bytes); \ - buf_ptr = ((const char *)buf_ptr) + num; \ - size -= num; \ - consumed_myself += num; \ - } while(0) - -#undef RETURN -#define RETURN(_code) do { \ - asn_dec_rval_t tmprval; \ - tmprval.code = _code; \ - tmprval.consumed = consumed_myself; \ - return tmprval; \ - } while(0) - -#undef APPEND -#define APPEND(bufptr, bufsize) do { \ - size_t _bs = (bufsize); /* Append size */ \ - size_t _ns = ctx->context; /* Allocated now */ \ - size_t _es = st->size + _bs; /* Expected size */ \ - /* int is really a typeof(st->size): */ \ - if((int)_es < 0) RETURN(RC_FAIL); \ - if(_ns <= _es) { \ - void *ptr; \ - /* Be nice and round to the memory allocator */ \ - do { _ns = _ns ? _ns << 1 : 16; } \ - while(_ns <= _es); \ - /* int is really a typeof(st->size): */ \ - if((int)_ns < 0) RETURN(RC_FAIL); \ - ptr = REALLOC(st->buf, _ns); \ - if(ptr) { \ - st->buf = (uint8_t *)ptr; \ - ctx->context = _ns; \ - } else { \ - RETURN(RC_FAIL); \ - } \ - ASN_DEBUG("Reallocating into %ld", (long)_ns); \ - } \ - memcpy(st->buf + st->size, bufptr, _bs); \ - /* Convenient nul-termination */ \ - st->buf[_es] = '\0'; \ - st->size = _es; \ - } while(0) - -/* - * Internal variant of the OCTET STRING. - */ -typedef enum OS_type { - _TT_GENERIC = 0, /* Just a random OCTET STRING */ - _TT_BIT_STRING = 1, /* BIT STRING type, a special case */ - _TT_ANY = 2 /* ANY type, a special case too */ -} OS_type_e; - -/* - * The main reason why ASN.1 is still alive is that too much time and effort - * is necessary for learning it more or less adequately, thus creating a gut - * necessity to demonstrate that aquired skill everywhere afterwards. - * No, I am not going to explain what the following stuff is. - */ -struct _stack_el { - ber_tlv_len_t left; /* What's left to read (or -1) */ - ber_tlv_len_t got; /* What was actually processed */ - int cont_level; /* Depth of subcontainment */ - int want_nulls; /* Want null "end of content" octets? */ - int bits_chopped; /* Flag in BIT STRING mode */ - ber_tlv_tag_t tag; /* For debugging purposes */ - struct _stack_el *prev; - struct _stack_el *next; -}; -struct _stack { - struct _stack_el *tail; - struct _stack_el *cur_ptr; -}; - -static struct _stack_el * -OS__add_stack_el(struct _stack *st) { - struct _stack_el *nel; - - /* - * Reuse the old stack frame or allocate a new one. - */ - if(st->cur_ptr && st->cur_ptr->next) { - nel = st->cur_ptr->next; - nel->bits_chopped = 0; - nel->got = 0; - /* Retain the nel->cont_level, it's correct. */ - } else { - nel = (struct _stack_el *)CALLOC(1, sizeof(struct _stack_el)); - if(nel == NULL) - return NULL; - - if(st->tail) { - /* Increase a subcontainment depth */ - nel->cont_level = st->tail->cont_level + 1; - st->tail->next = nel; - } - nel->prev = st->tail; - st->tail = nel; - } - - st->cur_ptr = nel; - - return nel; -} - -static struct _stack * -_new_stack() { - return (struct _stack *)CALLOC(1, sizeof(struct _stack)); -} - -/* - * Decode OCTET STRING type. - */ -asn_dec_rval_t -OCTET_STRING_decode_ber(asn_codec_ctx_t *opt_codec_ctx, - asn_TYPE_descriptor_t *td, - void **sptr, const void *buf_ptr, size_t size, int tag_mode) { - asn_OCTET_STRING_specifics_t *specs = td->specifics - ? (asn_OCTET_STRING_specifics_t *)td->specifics - : &asn_DEF_OCTET_STRING_specs; - BIT_STRING_t *st = (BIT_STRING_t *)*sptr; - asn_dec_rval_t rval; - asn_struct_ctx_t *ctx; - ssize_t consumed_myself = 0; - struct _stack *stck; /* Expectations stack structure */ - struct _stack_el *sel = 0; /* Stack element */ - int tlv_constr; - OS_type_e type_variant = (OS_type_e)specs->subvariant; - - ASN_DEBUG("Decoding %s as %s (frame %ld)", - td->name, - (type_variant == _TT_GENERIC) ? - "OCTET STRING" : "OS-SpecialCase", - (long)size); - - /* - * Create the string if does not exist. - */ - if(st == NULL) { - st = (BIT_STRING_t *)(*sptr = CALLOC(1, specs->struct_size)); - if(st == NULL) RETURN(RC_FAIL); - } - - /* Restore parsing context */ - ctx = (asn_struct_ctx_t *)((char *)st + specs->ctx_offset); - - switch(ctx->phase) { - case 0: - /* - * Check tags. - */ - rval = ber_check_tags(opt_codec_ctx, td, ctx, - buf_ptr, size, tag_mode, -1, - &ctx->left, &tlv_constr); - if(rval.code != RC_OK) - return rval; - - if(tlv_constr) { - /* - * Complex operation, requires stack of expectations. - */ - ctx->ptr = _new_stack(); - if(ctx->ptr) { - stck = (struct _stack *)ctx->ptr; - } else { - RETURN(RC_FAIL); - } - } else { - /* - * Jump into stackless primitive decoding. - */ - _CH_PHASE(ctx, 3); - if(type_variant == _TT_ANY && tag_mode != 1) - APPEND(buf_ptr, rval.consumed); - ADVANCE(rval.consumed); - goto phase3; - } - - NEXT_PHASE(ctx); - /* Fall through */ - case 1: - phase1: - /* - * Fill the stack with expectations. - */ - stck = (struct _stack *)ctx->ptr; - sel = stck->cur_ptr; - do { - ber_tlv_tag_t tlv_tag; - ber_tlv_len_t tlv_len; - ber_tlv_tag_t expected_tag; - ssize_t tl, ll, tlvl; - /* This one works even if (sel->left == -1) */ - ssize_t Left = ((!sel||(size_t)sel->left >= size) - ?(ssize_t)size:sel->left); - - - ASN_DEBUG("%p, s->l=%ld, s->wn=%ld, s->g=%ld\n", sel, - (long)(sel?sel->left:0), - (long)(sel?sel->want_nulls:0), - (long)(sel?sel->got:0) - ); - if(sel && sel->left <= 0 && sel->want_nulls == 0) { - if(sel->prev) { - struct _stack_el *prev = sel->prev; - if(prev->left != -1) { - if(prev->left < sel->got) - RETURN(RC_FAIL); - prev->left -= sel->got; - } - prev->got += sel->got; - sel = stck->cur_ptr = prev; - if(!sel) break; - tlv_constr = 1; - continue; - } else { - sel = stck->cur_ptr = 0; - break; /* Nothing to wait */ - } - } - - tl = ber_fetch_tag(buf_ptr, Left, &tlv_tag); - ASN_DEBUG("fetch tag(size=%ld,L=%ld), %sstack, left=%ld, wn=%ld, tl=%ld", - (long)size, (long)Left, sel?"":"!", - (long)(sel?sel->left:0), - (long)(sel?sel->want_nulls:0), - (long)tl); - switch(tl) { - case -1: RETURN(RC_FAIL); - case 0: RETURN(RC_WMORE); - } - - tlv_constr = BER_TLV_CONSTRUCTED(buf_ptr); - - ll = ber_fetch_length(tlv_constr, - (const char *)buf_ptr + tl,Left - tl,&tlv_len); - ASN_DEBUG("Got tag=%s, tc=%d, left=%ld, tl=%ld, len=%ld, ll=%ld", - ber_tlv_tag_string(tlv_tag), tlv_constr, - (long)Left, (long)tl, (long)tlv_len, (long)ll); - switch(ll) { - case -1: RETURN(RC_FAIL); - case 0: RETURN(RC_WMORE); - } - - if(sel && sel->want_nulls - && ((const uint8_t *)buf_ptr)[0] == 0 - && ((const uint8_t *)buf_ptr)[1] == 0) - { - - ASN_DEBUG("Eat EOC; wn=%d--", sel->want_nulls); - - if(type_variant == _TT_ANY - && (tag_mode != 1 || sel->cont_level)) - APPEND("\0\0", 2); - - ADVANCE(2); - sel->got += 2; - if(sel->left != -1) { - sel->left -= 2; /* assert(sel->left >= 2) */ - } - - sel->want_nulls--; - if(sel->want_nulls == 0) { - /* Move to the next expectation */ - sel->left = 0; - tlv_constr = 1; - } - - continue; - } - - /* - * Set up expected tags, - * depending on ASN.1 type being decoded. - */ - switch(type_variant) { - case _TT_BIT_STRING: - /* X.690: 8.6.4.1, NOTE 2 */ - /* Fall through */ - case _TT_GENERIC: - default: - if(sel) { - int level = sel->cont_level; - if(level < td->all_tags_count) { - expected_tag = td->all_tags[level]; - break; - } else if(td->all_tags_count) { - expected_tag = td->all_tags - [td->all_tags_count - 1]; - break; - } - /* else, Fall through */ - } - /* Fall through */ - case _TT_ANY: - expected_tag = tlv_tag; - break; - } - - - if(tlv_tag != expected_tag) { - char buf[2][32]; - ber_tlv_tag_snprint(tlv_tag, - buf[0], sizeof(buf[0])); - ber_tlv_tag_snprint(td->tags[td->tags_count-1], - buf[1], sizeof(buf[1])); - ASN_DEBUG("Tag does not match expectation: %s != %s", - buf[0], buf[1]); - RETURN(RC_FAIL); - } - - tlvl = tl + ll; /* Combined length of T and L encoding */ - if((tlv_len + tlvl) < 0) { - /* tlv_len value is too big */ - ASN_DEBUG("TLV encoding + length (%ld) is too big", - (long)tlv_len); - RETURN(RC_FAIL); - } - - /* - * Append a new expectation. - */ - sel = OS__add_stack_el(stck); - if(!sel) RETURN(RC_FAIL); - - sel->tag = tlv_tag; - - sel->want_nulls = (tlv_len==-1); - if(sel->prev && sel->prev->left != -1) { - /* Check that the parent frame is big enough */ - if(sel->prev->left < tlvl + (tlv_len==-1?0:tlv_len)) - RETURN(RC_FAIL); - if(tlv_len == -1) - sel->left = sel->prev->left - tlvl; - else - sel->left = tlv_len; - } else { - sel->left = tlv_len; - } - if(type_variant == _TT_ANY - && (tag_mode != 1 || sel->cont_level)) - APPEND(buf_ptr, tlvl); - sel->got += tlvl; - ADVANCE(tlvl); - - ASN_DEBUG("+EXPECT2 got=%ld left=%ld, wn=%d, clvl=%d", - (long)sel->got, (long)sel->left, - sel->want_nulls, sel->cont_level); - - } while(tlv_constr); - if(sel == NULL) { - /* Finished operation, "phase out" */ - ASN_DEBUG("Phase out"); - _CH_PHASE(ctx, +3); - break; - } - - NEXT_PHASE(ctx); - /* Fall through */ - case 2: - stck = (struct _stack *)ctx->ptr; - sel = stck->cur_ptr; - ASN_DEBUG("Phase 2: Need %ld bytes, size=%ld, alrg=%ld, wn=%d", - (long)sel->left, (long)size, (long)sel->got, - sel->want_nulls); - { - ber_tlv_len_t len; - - assert(sel->left >= 0); - - len = ((ber_tlv_len_t)size < sel->left) - ? (ber_tlv_len_t)size : sel->left; - if(len > 0) { - if(type_variant == _TT_BIT_STRING - && sel->bits_chopped == 0) { - /* Put the unused-bits-octet away */ - st->bits_unused = *(const uint8_t *)buf_ptr; - APPEND(((const char *)buf_ptr+1), (len - 1)); - sel->bits_chopped = 1; - } else { - APPEND(buf_ptr, len); - } - ADVANCE(len); - sel->left -= len; - sel->got += len; - } - - if(sel->left) { - ASN_DEBUG("OS left %ld, size = %ld, wn=%d\n", - (long)sel->left, (long)size, sel->want_nulls); - RETURN(RC_WMORE); - } - - PREV_PHASE(ctx); - goto phase1; - } - break; - case 3: - phase3: - /* - * Primitive form, no stack required. - */ - assert(ctx->left >= 0); - - if(size < (size_t)ctx->left) { - if(!size) RETURN(RC_WMORE); - if(type_variant == _TT_BIT_STRING && !ctx->context) { - st->bits_unused = *(const uint8_t *)buf_ptr; - ctx->left--; - ADVANCE(1); - } - APPEND(buf_ptr, size); - assert(ctx->context > 0); - ctx->left -= size; - ADVANCE(size); - RETURN(RC_WMORE); - } else { - if(type_variant == _TT_BIT_STRING - && !ctx->context && ctx->left) { - st->bits_unused = *(const uint8_t *)buf_ptr; - ctx->left--; - ADVANCE(1); - } - APPEND(buf_ptr, ctx->left); - ADVANCE(ctx->left); - ctx->left = 0; - - NEXT_PHASE(ctx); - } - break; - } - - if(sel) { - ASN_DEBUG("3sel p=%p, wn=%d, l=%ld, g=%ld, size=%ld", - sel->prev, sel->want_nulls, - (long)sel->left, (long)sel->got, (long)size); - if(sel->prev || sel->want_nulls > 1 || sel->left > 0) { - RETURN(RC_WMORE); - } - } - - /* - * BIT STRING-specific processing. - */ - if(type_variant == _TT_BIT_STRING && st->size) { - /* Finalize BIT STRING: zero out unused bits. */ - st->buf[st->size-1] &= 0xff << st->bits_unused; - } - - ASN_DEBUG("Took %ld bytes to encode %s: [%s]:%ld", - (long)consumed_myself, td->name, - (type_variant == _TT_GENERIC) ? (char *)st->buf : "", - (long)st->size); - - - RETURN(RC_OK); -} - -/* - * Encode OCTET STRING type using DER. - */ -asn_enc_rval_t -OCTET_STRING_encode_der(asn_TYPE_descriptor_t *td, void *sptr, - int tag_mode, ber_tlv_tag_t tag, - asn_app_consume_bytes_f *cb, void *app_key) { - asn_enc_rval_t er; - asn_OCTET_STRING_specifics_t *specs = td->specifics - ? (asn_OCTET_STRING_specifics_t *)td->specifics - : &asn_DEF_OCTET_STRING_specs; - BIT_STRING_t *st = (BIT_STRING_t *)sptr; - OS_type_e type_variant = (OS_type_e)specs->subvariant; - int fix_last_byte = 0; - - ASN_DEBUG("%s %s as OCTET STRING", - cb?"Estimating":"Encoding", td->name); - - /* - * Write tags. - */ - if(type_variant != _TT_ANY || tag_mode == 1) { - er.encoded = der_write_tags(td, - (type_variant == _TT_BIT_STRING) + st->size, - tag_mode, type_variant == _TT_ANY, tag, cb, app_key); - if(er.encoded == -1) { - er.failed_type = td; - er.structure_ptr = sptr; - return er; - } - } else { - /* Disallow: [] IMPLICIT ANY */ - assert(type_variant != _TT_ANY || tag_mode != -1); - er.encoded = 0; - } - - if(!cb) { - er.encoded += (type_variant == _TT_BIT_STRING) + st->size; - _ASN_ENCODED_OK(er); - } - - /* - * Prepare to deal with the last octet of BIT STRING. - */ - if(type_variant == _TT_BIT_STRING) { - uint8_t b = st->bits_unused & 0x07; - if(b && st->size) fix_last_byte = 1; - _ASN_CALLBACK(&b, 1); - er.encoded++; - } - - /* Invoke callback for the main part of the buffer */ - _ASN_CALLBACK(st->buf, st->size - fix_last_byte); - - /* The last octet should be stripped off the unused bits */ - if(fix_last_byte) { - uint8_t b = st->buf[st->size-1] & (0xff << st->bits_unused); - _ASN_CALLBACK(&b, 1); - } - - er.encoded += st->size; - _ASN_ENCODED_OK(er); -cb_failed: - _ASN_ENCODE_FAILED; -} - -asn_enc_rval_t -OCTET_STRING_encode_xer(asn_TYPE_descriptor_t *td, void *sptr, - int ilevel, enum xer_encoder_flags_e flags, - asn_app_consume_bytes_f *cb, void *app_key) { - static const char *h2c = "0123456789ABCDEF"; - const OCTET_STRING_t *st = (const OCTET_STRING_t *)sptr; - asn_enc_rval_t er; - char scratch[16 * 3 + 4]; - char *p = scratch; - uint8_t *buf; - uint8_t *end; - - if(!st || !st->buf) - _ASN_ENCODE_FAILED; - - er.encoded = 0; - - /* - * Dump the contents of the buffer in hexadecimal. - */ - buf = st->buf; - end = buf + st->size; - if(flags & XER_F_CANONICAL) { - char *scend = scratch + (sizeof(scratch) - 2); - for(; buf < end; buf++) { - if(p >= scend) { - _ASN_CALLBACK(scratch, p - scratch); - er.encoded += p - scratch; - p = scratch; - } - *p++ = h2c[(*buf >> 4) & 0x0F]; - *p++ = h2c[*buf & 0x0F]; - } - - _ASN_CALLBACK(scratch, p-scratch); /* Dump the rest */ - er.encoded += p - scratch; - } else { - size_t i; - for(i = 0; buf < end; buf++, i++) { - if(!(i % 16) && (i || st->size > 16)) { - _ASN_CALLBACK(scratch, p-scratch); - er.encoded += (p-scratch); - p = scratch; - _i_ASN_TEXT_INDENT(1, ilevel); - } - *p++ = h2c[(*buf >> 4) & 0x0F]; - *p++ = h2c[*buf & 0x0F]; - *p++ = 0x20; - } - if(p - scratch) { - p--; /* Remove the tail space */ - _ASN_CALLBACK(scratch, p-scratch); /* Dump the rest */ - er.encoded += p - scratch; - if(st->size > 16) - _i_ASN_TEXT_INDENT(1, ilevel-1); - } - } - - _ASN_ENCODED_OK(er); -cb_failed: - _ASN_ENCODE_FAILED; -} - -static struct OCTET_STRING__xer_escape_table_s { - char *string; - int size; -} OCTET_STRING__xer_escape_table[] = { -#define OSXET(s) { s, sizeof(s) - 1 } - OSXET("\074\156\165\154\057\076"), /* */ - OSXET("\074\163\157\150\057\076"), /* */ - OSXET("\074\163\164\170\057\076"), /* */ - OSXET("\074\145\164\170\057\076"), /* */ - OSXET("\074\145\157\164\057\076"), /* */ - OSXET("\074\145\156\161\057\076"), /* */ - OSXET("\074\141\143\153\057\076"), /* */ - OSXET("\074\142\145\154\057\076"), /* */ - OSXET("\074\142\163\057\076"), /* */ - OSXET("\011"), /* \t */ - OSXET("\012"), /* \n */ - OSXET("\074\166\164\057\076"), /* */ - OSXET("\074\146\146\057\076"), /* */ - OSXET("\015"), /* \r */ - OSXET("\074\163\157\057\076"), /* */ - OSXET("\074\163\151\057\076"), /* */ - OSXET("\074\144\154\145\057\076"), /* */ - OSXET("\074\144\143\061\057\076"), /* */ - OSXET("\074\144\143\062\057\076"), /* */ - OSXET("\074\144\143\063\057\076"), /* */ - OSXET("\074\144\143\064\057\076"), /* */ - OSXET("\074\156\141\153\057\076"), /* */ - OSXET("\074\163\171\156\057\076"), /* */ - OSXET("\074\145\164\142\057\076"), /* */ - OSXET("\074\143\141\156\057\076"), /* */ - OSXET("\074\145\155\057\076"), /* */ - OSXET("\074\163\165\142\057\076"), /* */ - OSXET("\074\145\163\143\057\076"), /* */ - OSXET("\074\151\163\064\057\076"), /* */ - OSXET("\074\151\163\063\057\076"), /* */ - OSXET("\074\151\163\062\057\076"), /* */ - OSXET("\074\151\163\061\057\076"), /* */ - { 0, 0 }, /* " " */ - { 0, 0 }, /* ! */ - { 0, 0 }, /* \" */ - { 0, 0 }, /* # */ - { 0, 0 }, /* $ */ - { 0, 0 }, /* % */ - OSXET("\046\141\155\160\073"), /* & */ - { 0, 0 }, /* ' */ - {0,0},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, /* ()*+,-./ */ - {0,0},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0},{0,0}, /* 01234567 */ - {0,0},{0,0},{0,0},{0,0}, /* 89:; */ - OSXET("\046\154\164\073"), /* < */ - { 0, 0 }, /* = */ - OSXET("\046\147\164\073"), /* > */ -}; - -static int -OS__check_escaped_control_char(const void *buf, int size) { - size_t i; - /* - * Inefficient algorithm which translates the escape sequences - * defined above into characters. Returns -1 if not found. - * TODO: replace by a faster algorithm (bsearch(), hash or - * nested table lookups). - */ - for(i = 0; i < 32 /* Don't spend time on the bottom half */; i++) { - struct OCTET_STRING__xer_escape_table_s *el; - el = &OCTET_STRING__xer_escape_table[i]; - if(el->size == size && memcmp(buf, el->string, size) == 0) - return i; - } - return -1; -} - -static int -OCTET_STRING__handle_control_chars(void *struct_ptr, const void *chunk_buf, size_t chunk_size) { - /* - * This might be one of the escape sequences - * for control characters. Check it out. - * #11.15.5 - */ - int control_char = OS__check_escaped_control_char(chunk_buf,chunk_size); - if(control_char >= 0) { - OCTET_STRING_t *st = (OCTET_STRING_t *)struct_ptr; - void *p = REALLOC(st->buf, st->size + 2); - if(p) { - st->buf = (uint8_t *)p; - st->buf[st->size++] = control_char; - st->buf[st->size] = '\0'; /* nul-termination */ - return 0; - } - } - - return -1; /* No, it's not */ -} - -asn_enc_rval_t -OCTET_STRING_encode_xer_utf8(asn_TYPE_descriptor_t *td, void *sptr, - int ilevel, enum xer_encoder_flags_e flags, - asn_app_consume_bytes_f *cb, void *app_key) { - const OCTET_STRING_t *st = (const OCTET_STRING_t *)sptr; - asn_enc_rval_t er; - uint8_t *buf, *end; - uint8_t *ss; /* Sequence start */ - ssize_t encoded_len = 0; - - (void)ilevel; /* Unused argument */ - (void)flags; /* Unused argument */ - - if(!st || !st->buf) - _ASN_ENCODE_FAILED; - - buf = st->buf; - end = buf + st->size; - for(ss = buf; buf < end; buf++) { - unsigned int ch = *buf; - int s_len; /* Special encoding sequence length */ - - /* - * Escape certain characters: X.680/11.15 - */ - if(ch < sizeof(OCTET_STRING__xer_escape_table) - /sizeof(OCTET_STRING__xer_escape_table[0]) - && (s_len = OCTET_STRING__xer_escape_table[ch].size)) { - if(((buf - ss) && cb(ss, buf - ss, app_key) < 0) - || cb(OCTET_STRING__xer_escape_table[ch].string, s_len, - app_key) < 0) - _ASN_ENCODE_FAILED; - encoded_len += (buf - ss) + s_len; - ss = buf + 1; - } - } - - encoded_len += (buf - ss); - if((buf - ss) && cb(ss, buf - ss, app_key) < 0) - _ASN_ENCODE_FAILED; - - er.encoded = encoded_len; - _ASN_ENCODED_OK(er); -} - -/* - * Convert from hexadecimal format (cstring): "AB CD EF" - */ -static ssize_t OCTET_STRING__convert_hexadecimal(void *sptr, const void *chunk_buf, size_t chunk_size, int have_more) { - OCTET_STRING_t *st = (OCTET_STRING_t *)sptr; - const char *chunk_stop = (const char *)chunk_buf; - const char *p = chunk_stop; - const char *pend = p + chunk_size; - unsigned int clv = 0; - int half = 0; /* Half bit */ - uint8_t *buf; - - /* Reallocate buffer according to high cap estimation */ - ssize_t _ns = st->size + (chunk_size + 1) / 2; - void *nptr = REALLOC(st->buf, _ns + 1); - if(!nptr) return -1; - st->buf = (uint8_t *)nptr; - buf = st->buf + st->size; - - /* - * If something like " a b c " appears here, the " a b":3 will be - * converted, and the rest skipped. That is, unless buf_size is greater - * than chunk_size, then it'll be equivalent to "ABC0". - */ - for(; p < pend; p++) { - int ch = *(const unsigned char *)p; - switch(ch) { - case 0x09: case 0x0a: case 0x0c: case 0x0d: - case 0x20: - /* Ignore whitespace */ - continue; - case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: /*01234*/ - case 0x35: case 0x36: case 0x37: case 0x38: case 0x39: /*56789*/ - clv = (clv << 4) + (ch - 0x30); - break; - case 0x41: case 0x42: case 0x43: /* ABC */ - case 0x44: case 0x45: case 0x46: /* DEF */ - clv = (clv << 4) + (ch - 0x41 + 10); - break; - case 0x61: case 0x62: case 0x63: /* abc */ - case 0x64: case 0x65: case 0x66: /* def */ - clv = (clv << 4) + (ch - 0x61 + 10); - break; - default: - *buf = 0; /* JIC */ - return -1; - } - if(half++) { - half = 0; - *buf++ = clv; - chunk_stop = p + 1; - } - } - - /* - * Check partial decoding. - */ - if(half) { - if(have_more) { - /* - * Partial specification is fine, - * because no more more PXER_TEXT data is available. - */ - *buf++ = clv << 4; - chunk_stop = p; - } - } else { - chunk_stop = p; - } - - st->size = buf - st->buf; /* Adjust the buffer size */ - assert(st->size <= _ns); - st->buf[st->size] = 0; /* Courtesy termination */ - - return (chunk_stop - (const char *)chunk_buf); /* Converted size */ -} - -/* - * Convert from binary format: "00101011101" - */ -static ssize_t OCTET_STRING__convert_binary(void *sptr, const void *chunk_buf, size_t chunk_size, int have_more) { - BIT_STRING_t *st = (BIT_STRING_t *)sptr; - const char *p = (const char *)chunk_buf; - const char *pend = p + chunk_size; - int bits_unused = st->bits_unused & 0x7; - uint8_t *buf; - - /* Reallocate buffer according to high cap estimation */ - ssize_t _ns = st->size + (chunk_size + 7) / 8; - void *nptr = REALLOC(st->buf, _ns + 1); - if(!nptr) return -1; - st->buf = (uint8_t *)nptr; - buf = st->buf + st->size; - - (void)have_more; - - if(bits_unused == 0) - bits_unused = 8; - else if(st->size) - buf--; - - /* - * Convert series of 0 and 1 into the octet string. - */ - for(; p < pend; p++) { - int ch = *(const unsigned char *)p; - switch(ch) { - case 0x09: case 0x0a: case 0x0c: case 0x0d: - case 0x20: - /* Ignore whitespace */ - break; - case 0x30: - case 0x31: - if(bits_unused-- <= 0) { - *++buf = 0; /* Clean the cell */ - bits_unused = 7; - } - *buf |= (ch&1) << bits_unused; - break; - default: - st->bits_unused = bits_unused; - return -1; - } - } - - if(bits_unused == 8) { - st->size = buf - st->buf; - st->bits_unused = 0; - } else { - st->size = buf - st->buf + 1; - st->bits_unused = bits_unused; - } - - assert(st->size <= _ns); - st->buf[st->size] = 0; /* Courtesy termination */ - - return chunk_size; /* Converted in full */ -} - -/* - * Something like strtod(), but with stricter rules. - */ -static int -OS__strtoent(int base, const char *buf, const char *end, int32_t *ret_value) { - int32_t val = 0; - const char *p; - - for(p = buf; p < end; p++) { - int ch = *p; - - /* Strange huge value */ - if((val * base + base) < 0) - return -1; - - switch(ch) { - case 0x30: case 0x31: case 0x32: case 0x33: case 0x34: /*01234*/ - case 0x35: case 0x36: case 0x37: case 0x38: case 0x39: /*56789*/ - val = val * base + (ch - 0x30); - break; - case 0x41: case 0x42: case 0x43: /* ABC */ - case 0x44: case 0x45: case 0x46: /* DEF */ - val = val * base + (ch - 0x41 + 10); - break; - case 0x61: case 0x62: case 0x63: /* abc */ - case 0x64: case 0x65: case 0x66: /* def */ - val = val * base + (ch - 0x61 + 10); - break; - case 0x3b: /* ';' */ - *ret_value = val; - return (p - buf) + 1; - default: - return -1; /* Character set error */ - } - } - - *ret_value = -1; - return (p - buf); -} - -/* - * Convert from the plain UTF-8 format, expanding entity references: "2 < 3" - */ -static ssize_t OCTET_STRING__convert_entrefs(void *sptr, const void *chunk_buf, size_t chunk_size, int have_more) { - OCTET_STRING_t *st = (OCTET_STRING_t *)sptr; - const char *p = (const char *)chunk_buf; - const char *pend = p + chunk_size; - uint8_t *buf; - - /* Reallocate buffer */ - ssize_t _ns = st->size + chunk_size; - void *nptr = REALLOC(st->buf, _ns + 1); - if(!nptr) return -1; - st->buf = (uint8_t *)nptr; - buf = st->buf + st->size; - - /* - * Convert series of 0 and 1 into the octet string. - */ - for(; p < pend; p++) { - int ch = *(const unsigned char *)p; - int len; /* Length of the rest of the chunk */ - - if(ch != 0x26 /* '&' */) { - *buf++ = ch; - continue; /* That was easy... */ - } - - /* - * Process entity reference. - */ - len = chunk_size - (p - (const char *)chunk_buf); - if(len == 1 /* "&" */) goto want_more; - if(p[1] == 0x23 /* '#' */) { - const char *pval; /* Pointer to start of digits */ - int32_t val = 0; /* Entity reference value */ - int base; - - if(len == 2 /* "&#" */) goto want_more; - if(p[2] == 0x78 /* 'x' */) - pval = p + 3, base = 16; - else - pval = p + 2, base = 10; - len = OS__strtoent(base, pval, p + len, &val); - if(len == -1) { - /* Invalid charset. Just copy verbatim. */ - *buf++ = ch; - continue; - } - if(!len || pval[len-1] != 0x3b) goto want_more; - assert(val > 0); - p += (pval - p) + len - 1; /* Advance past entref */ - - if(val < 0x80) { - *buf++ = (char)val; - } else if(val < 0x800) { - *buf++ = 0xc0 | ((val >> 6)); - *buf++ = 0x80 | ((val & 0x3f)); - } else if(val < 0x10000) { - *buf++ = 0xe0 | ((val >> 12)); - *buf++ = 0x80 | ((val >> 6) & 0x3f); - *buf++ = 0x80 | ((val & 0x3f)); - } else if(val < 0x200000) { - *buf++ = 0xf0 | ((val >> 18)); - *buf++ = 0x80 | ((val >> 12) & 0x3f); - *buf++ = 0x80 | ((val >> 6) & 0x3f); - *buf++ = 0x80 | ((val & 0x3f)); - } else if(val < 0x4000000) { - *buf++ = 0xf8 | ((val >> 24)); - *buf++ = 0x80 | ((val >> 18) & 0x3f); - *buf++ = 0x80 | ((val >> 12) & 0x3f); - *buf++ = 0x80 | ((val >> 6) & 0x3f); - *buf++ = 0x80 | ((val & 0x3f)); - } else { - *buf++ = 0xfc | ((val >> 30) & 0x1); - *buf++ = 0x80 | ((val >> 24) & 0x3f); - *buf++ = 0x80 | ((val >> 18) & 0x3f); - *buf++ = 0x80 | ((val >> 12) & 0x3f); - *buf++ = 0x80 | ((val >> 6) & 0x3f); - *buf++ = 0x80 | ((val & 0x3f)); - } - } else { - /* - * Ugly, limited parsing of & > < - */ - char *sc = (char *)memchr(p, 0x3b, len > 5 ? 5 : len); - if(!sc) goto want_more; - if((sc - p) == 4 - && p[1] == 0x61 /* 'a' */ - && p[2] == 0x6d /* 'm' */ - && p[3] == 0x70 /* 'p' */) { - *buf++ = 0x26; - p = sc; - continue; - } - if((sc - p) == 3) { - if(p[1] == 0x6c) { - *buf = 0x3c; /* '<' */ - } else if(p[1] == 0x67) { - *buf = 0x3e; /* '>' */ - } else { - /* Unsupported entity reference */ - *buf++ = ch; - continue; - } - if(p[2] != 0x74) { - /* Unsupported entity reference */ - *buf++ = ch; - continue; - } - buf++; - p = sc; - continue; - } - /* Unsupported entity reference */ - *buf++ = ch; - } - - continue; - want_more: - if(have_more) { - /* - * We know that no more data (of the same type) - * is coming. Copy the rest verbatim. - */ - *buf++ = ch; - continue; - } - chunk_size = (p - (const char *)chunk_buf); - /* Processing stalled: need more data */ - break; - } - - st->size = buf - st->buf; - assert(st->size <= _ns); - st->buf[st->size] = 0; /* Courtesy termination */ - - return chunk_size; /* Converted in full */ -} - -/* - * Decode OCTET STRING from the XML element's body. - */ -static asn_dec_rval_t -OCTET_STRING__decode_xer(asn_codec_ctx_t *opt_codec_ctx, - asn_TYPE_descriptor_t *td, void **sptr, - const char *opt_mname, const void *buf_ptr, size_t size, - int (*opt_unexpected_tag_decoder) - (void *struct_ptr, const void *chunk_buf, size_t chunk_size), - ssize_t (*body_receiver) - (void *struct_ptr, const void *chunk_buf, size_t chunk_size, - int have_more) -) { - OCTET_STRING_t *st = (OCTET_STRING_t *)*sptr; - asn_OCTET_STRING_specifics_t *specs = td->specifics - ? (asn_OCTET_STRING_specifics_t *)td->specifics - : &asn_DEF_OCTET_STRING_specs; - const char *xml_tag = opt_mname ? opt_mname : td->xml_tag; - asn_struct_ctx_t *ctx; /* Per-structure parser context */ - asn_dec_rval_t rval; /* Return value from the decoder */ - int st_allocated; - - /* - * Create the string if does not exist. - */ - if(!st) { - st = (OCTET_STRING_t *)CALLOC(1, specs->struct_size); - *sptr = (void *)st; - if(!st) goto sta_failed; - st_allocated = 1; - } else { - st_allocated = 0; - } - if(!st->buf) { - /* This is separate from above section */ - st->buf = (uint8_t *)CALLOC(1, 1); - if(!st->buf) { - if(st_allocated) { - *sptr = 0; - goto stb_failed; - } else { - goto sta_failed; - } - } - } - - /* Restore parsing context */ - ctx = (asn_struct_ctx_t *)(((char *)*sptr) + specs->ctx_offset); - - return xer_decode_general(opt_codec_ctx, ctx, *sptr, xml_tag, - buf_ptr, size, opt_unexpected_tag_decoder, body_receiver); - -stb_failed: - FREEMEM(st); -sta_failed: - rval.code = RC_FAIL; - rval.consumed = 0; - return rval; -} - -/* - * Decode OCTET STRING from the hexadecimal data. - */ -asn_dec_rval_t -OCTET_STRING_decode_xer_hex(asn_codec_ctx_t *opt_codec_ctx, - asn_TYPE_descriptor_t *td, void **sptr, - const char *opt_mname, const void *buf_ptr, size_t size) { - return OCTET_STRING__decode_xer(opt_codec_ctx, td, sptr, opt_mname, - buf_ptr, size, 0, OCTET_STRING__convert_hexadecimal); -} - -/* - * Decode OCTET STRING from the binary (0/1) data. - */ -asn_dec_rval_t -OCTET_STRING_decode_xer_binary(asn_codec_ctx_t *opt_codec_ctx, - asn_TYPE_descriptor_t *td, void **sptr, - const char *opt_mname, const void *buf_ptr, size_t size) { - return OCTET_STRING__decode_xer(opt_codec_ctx, td, sptr, opt_mname, - buf_ptr, size, 0, OCTET_STRING__convert_binary); -} - -/* - * Decode OCTET STRING from the string (ASCII/UTF-8) data. - */ -asn_dec_rval_t -OCTET_STRING_decode_xer_utf8(asn_codec_ctx_t *opt_codec_ctx, - asn_TYPE_descriptor_t *td, void **sptr, - const char *opt_mname, const void *buf_ptr, size_t size) { - return OCTET_STRING__decode_xer(opt_codec_ctx, td, sptr, opt_mname, - buf_ptr, size, - OCTET_STRING__handle_control_chars, - OCTET_STRING__convert_entrefs); -} - -asn_dec_rval_t -OCTET_STRING_decode_uper(asn_codec_ctx_t *opt_codec_ctx, - asn_TYPE_descriptor_t *td, asn_per_constraints_t *constraints, - void **sptr, asn_per_data_t *pd) { - - asn_OCTET_STRING_specifics_t *specs = td->specifics - ? (asn_OCTET_STRING_specifics_t *)td->specifics - : &asn_DEF_OCTET_STRING_specs; - asn_per_constraint_t *ct = constraints ? &constraints->size - : (td->per_constraints - ? &td->per_constraints->size - : &asn_DEF_OCTET_STRING_constraint); - asn_dec_rval_t rval = { RC_OK, 0 }; - BIT_STRING_t *st = (BIT_STRING_t *)*sptr; - ssize_t consumed_myself = 0; - int repeat; - int unit_bits = (specs->subvariant != 1) * 7 + 1; - - (void)opt_codec_ctx; - - /* - * Allocate the string. - */ - if(!st) { - st = (BIT_STRING_t *)(*sptr = CALLOC(1, specs->struct_size)); - if(!st) RETURN(RC_FAIL); - } - - ASN_DEBUG("PER Decoding %s %ld .. %ld bits %d", - ct->flags & APC_EXTENSIBLE ? "extensible" : "fixed", - ct->lower_bound, ct->upper_bound, ct->effective_bits); - - if(ct->flags & APC_EXTENSIBLE) { - int inext = per_get_few_bits(pd, 1); - if(inext < 0) RETURN(RC_WMORE); - if(inext) ct = &asn_DEF_OCTET_STRING_constraint; - consumed_myself = 0; - } - - if(ct->effective_bits >= 0 - && (!st->buf || st->size < ct->upper_bound)) { - FREEMEM(st->buf); - if(unit_bits == 1) { - st->size = (ct->upper_bound + 7) >> 3; - } else { - st->size = ct->upper_bound; - } - st->buf = (uint8_t *)MALLOC(st->size + 1); - if(!st->buf) { st->size = 0; RETURN(RC_FAIL); } - } - - /* X.691, #16.5: zero-length encoding */ - /* X.691, #16.6: short fixed length encoding (up to 2 octets) */ - /* X.691, #16.7: long fixed length encoding (up to 64K octets) */ - if(ct->effective_bits == 0) { - int ret = per_get_many_bits(pd, st->buf, 0, - unit_bits * ct->upper_bound); - if(ret < 0) RETURN(RC_WMORE); - consumed_myself += unit_bits * ct->upper_bound; - st->buf[st->size] = 0; - if(unit_bits == 1 && (ct->upper_bound & 0x7)) - st->bits_unused = 8 - (ct->upper_bound & 0x7); - RETURN(RC_OK); - } - - st->size = 0; - do { - ssize_t len_bytes; - ssize_t len_bits; - void *p; - int ret; - - /* Get the PER length */ - len_bits = uper_get_length(pd, ct->effective_bits, &repeat); - if(len_bits < 0) RETURN(RC_WMORE); - len_bits += ct->lower_bound; - - ASN_DEBUG("Got PER length eb %ld, len %ld, %s (%s)", - (long)ct->effective_bits, (long)len_bits, - repeat ? "repeat" : "once", td->name); - if(unit_bits == 1) { - len_bytes = (len_bits + 7) >> 3; - if(len_bits & 0x7) - st->bits_unused = 8 - (len_bits & 0x7); - /* len_bits be multiple of 16K if repeat is set */ - } else { - len_bytes = len_bits; - len_bits = len_bytes << 3; - } - p = REALLOC(st->buf, st->size + len_bytes + 1); - if(!p) RETURN(RC_FAIL); - st->buf = (uint8_t *)p; - - ret = per_get_many_bits(pd, &st->buf[st->size], 0, len_bits); - if(ret < 0) RETURN(RC_WMORE); - st->size += len_bytes; - } while(repeat); - st->buf[st->size] = 0; /* nul-terminate */ - - return rval; -} - -asn_enc_rval_t -OCTET_STRING_encode_uper(asn_TYPE_descriptor_t *td, - asn_per_constraints_t *constraints, void *sptr, asn_per_outp_t *po) { - - asn_OCTET_STRING_specifics_t *specs = td->specifics - ? (asn_OCTET_STRING_specifics_t *)td->specifics - : &asn_DEF_OCTET_STRING_specs; - asn_per_constraint_t *ct = constraints ? &constraints->size - : (td->per_constraints - ? &td->per_constraints->size - : &asn_DEF_OCTET_STRING_constraint); - const BIT_STRING_t *st = (const BIT_STRING_t *)sptr; - int unit_bits = (specs->subvariant != 1) * 7 + 1; - asn_enc_rval_t er; - int ct_extensible = ct->flags & APC_EXTENSIBLE; - int inext = 0; /* Lies not within extension root */ - int sizeinunits = 0; - const uint8_t *buf; - int ret; - - if(!st || !st->buf) - _ASN_ENCODE_FAILED; - sizeinunits = st->size; - - if(unit_bits == 1) { - ASN_DEBUG("BIT STRING of %d bytes, %d bits unused", - sizeinunits, st->bits_unused); - sizeinunits = sizeinunits * 8 - (st->bits_unused & 0x07); - } - - ASN_DEBUG("Encoding %s into %d units of %d bits" - " (%d..%d, effective %d)%s", - td->name, sizeinunits, unit_bits, - ct->lower_bound, ct->upper_bound, - ct->effective_bits, ct_extensible ? " EXT" : ""); - - /* Figure out wheter size lies within PER visible consrtaint */ - - if(ct->effective_bits >= 0) { - if(sizeinunits < ct->lower_bound - || sizeinunits > ct->upper_bound) { - if(ct_extensible) { - ct = &asn_DEF_OCTET_STRING_constraint; - inext = 1; - } else - _ASN_ENCODE_FAILED; - } - } else { - inext = 0; - } - - if(ct_extensible) { - /* Declare whether length is [not] within extension root */ - if(per_put_few_bits(po, inext, 1)) - _ASN_ENCODE_FAILED; - } - - /* X.691, #16.5: zero-length encoding */ - /* X.691, #16.6: short fixed length encoding (up to 2 octets) */ - /* X.691, #16.7: long fixed length encoding (up to 64K octets) */ - if(ct->effective_bits >= 0) { - ASN_DEBUG("Encoding %d bytes (%ld), length in %d bits", - st->size, sizeinunits - ct->lower_bound, - ct->effective_bits); - ret = per_put_few_bits(po, sizeinunits - ct->lower_bound, - ct->effective_bits); - if(ret) _ASN_ENCODE_FAILED; - ret = per_put_many_bits(po, st->buf, sizeinunits * unit_bits); - if(ret) _ASN_ENCODE_FAILED; - _ASN_ENCODED_OK(er); - } - - ASN_DEBUG("Encoding %d bytes", st->size); - - if(sizeinunits == 0) { - if(uper_put_length(po, 0)) - _ASN_ENCODE_FAILED; - _ASN_ENCODED_OK(er); - } - - buf = st->buf; - while(sizeinunits) { - ssize_t maySave = uper_put_length(po, sizeinunits); - if(maySave < 0) _ASN_ENCODE_FAILED; - - ASN_DEBUG("Encoding %d of %d", maySave, sizeinunits); - - ret = per_put_many_bits(po, buf, maySave * unit_bits); - if(ret) _ASN_ENCODE_FAILED; - - if(unit_bits == 1) - buf += maySave >> 3; - else - buf += maySave; - sizeinunits -= maySave; - assert(!(maySave & 0x07) || !sizeinunits); - } - - _ASN_ENCODED_OK(er); -} - -int -OCTET_STRING_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel, - asn_app_consume_bytes_f *cb, void *app_key) { - static const char *h2c = "0123456789ABCDEF"; - const OCTET_STRING_t *st = (const OCTET_STRING_t *)sptr; - char scratch[16 * 3 + 4]; - char *p = scratch; - uint8_t *buf; - uint8_t *end; - size_t i; - - (void)td; /* Unused argument */ - - if(!st || !st->buf) return (cb("", 8, app_key) < 0) ? -1 : 0; - - /* - * Dump the contents of the buffer in hexadecimal. - */ - buf = st->buf; - end = buf + st->size; - for(i = 0; buf < end; buf++, i++) { - if(!(i % 16) && (i || st->size > 16)) { - if(cb(scratch, p - scratch, app_key) < 0) - return -1; - _i_INDENT(1); - p = scratch; - } - *p++ = h2c[(*buf >> 4) & 0x0F]; - *p++ = h2c[*buf & 0x0F]; - *p++ = 0x20; - } - - if(p > scratch) { - p--; /* Remove the tail space */ - if(cb(scratch, p - scratch, app_key) < 0) - return -1; - } - - return 0; -} - -int -OCTET_STRING_print_utf8(asn_TYPE_descriptor_t *td, const void *sptr, - int ilevel, asn_app_consume_bytes_f *cb, void *app_key) { - const OCTET_STRING_t *st = (const OCTET_STRING_t *)sptr; - - (void)td; /* Unused argument */ - (void)ilevel; /* Unused argument */ - - if(st && st->buf) { - return (cb(st->buf, st->size, app_key) < 0) ? -1 : 0; - } else { - return (cb("", 8, app_key) < 0) ? -1 : 0; - } -} - -void -OCTET_STRING_free(asn_TYPE_descriptor_t *td, void *sptr, int contents_only) { - OCTET_STRING_t *st = (OCTET_STRING_t *)sptr; - asn_OCTET_STRING_specifics_t *specs = td && td->specifics - ? (asn_OCTET_STRING_specifics_t *)td->specifics - : &asn_DEF_OCTET_STRING_specs; - asn_struct_ctx_t *ctx = (asn_struct_ctx_t *) - ((char *)st + specs->ctx_offset); - struct _stack *stck; - - if(!td || !st) - return; - - ASN_DEBUG("Freeing %s as OCTET STRING", td->name); - - if(st->buf) { - FREEMEM(st->buf); - } - - /* - * Remove decode-time stack. - */ - stck = (struct _stack *)ctx->ptr; - if(stck) { - while(stck->tail) { - struct _stack_el *sel = stck->tail; - stck->tail = sel->prev; - FREEMEM(sel); - } - FREEMEM(stck); - } - - if(!contents_only) { - FREEMEM(st); - } -} - -/* - * Conversion routines. - */ -int -OCTET_STRING_fromBuf(OCTET_STRING_t *st, const char *str, int len) { - void *buf; - - if(st == 0 || (str == 0 && len)) { - errno = EINVAL; - return -1; - } - - /* - * Clear the OCTET STRING. - */ - if(str == NULL) { - FREEMEM(st->buf); - st->buf = 0; - st->size = 0; - return 0; - } - - /* Determine the original string size, if not explicitly given */ - if(len < 0) - len = strlen(str); - - /* Allocate and fill the memory */ - buf = MALLOC(len + 1); - if(buf == NULL) - return -1; - - memcpy(buf, str, len); - ((uint8_t *)buf)[len] = '\0'; /* Couldn't use memcpy(len+1)! */ - FREEMEM(st->buf); - st->buf = (uint8_t *)buf; - st->size = len; - - return 0; -} - -OCTET_STRING_t * -OCTET_STRING_new_fromBuf(asn_TYPE_descriptor_t *td, const char *str, int len) { - asn_OCTET_STRING_specifics_t *specs = td->specifics - ? (asn_OCTET_STRING_specifics_t *)td->specifics - : &asn_DEF_OCTET_STRING_specs; - OCTET_STRING_t *st; - - st = (OCTET_STRING_t *)CALLOC(1, specs->struct_size); - if(st && str && OCTET_STRING_fromBuf(st, str, len)) { - FREEMEM(st); - st = NULL; - } - - return st; -} -