+/*-
+ * Copyright (c) 2003, 2004, 2005, 2006 Lev Walkin <vlm@lionet.info>.
+ * All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#include <asn_internal.h>
+#include <OCTET_STRING.h>
+#include <BIT_STRING.h> /* for .bits_unused member */
+#include <errno.h>
+
+/*
+ * 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 : "<data>",
+ (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: [<tag>] 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"), /* <nul/> */
+ OSXET("\074\163\157\150\057\076"), /* <soh/> */
+ OSXET("\074\163\164\170\057\076"), /* <stx/> */
+ OSXET("\074\145\164\170\057\076"), /* <etx/> */
+ OSXET("\074\145\157\164\057\076"), /* <eot/> */
+ OSXET("\074\145\156\161\057\076"), /* <enq/> */
+ OSXET("\074\141\143\153\057\076"), /* <ack/> */
+ OSXET("\074\142\145\154\057\076"), /* <bel/> */
+ OSXET("\074\142\163\057\076"), /* <bs/> */
+ OSXET("\011"), /* \t */
+ OSXET("\012"), /* \n */
+ OSXET("\074\166\164\057\076"), /* <vt/> */
+ OSXET("\074\146\146\057\076"), /* <ff/> */
+ OSXET("\015"), /* \r */
+ OSXET("\074\163\157\057\076"), /* <so/> */
+ OSXET("\074\163\151\057\076"), /* <si/> */
+ OSXET("\074\144\154\145\057\076"), /* <dle/> */
+ OSXET("\074\144\143\061\057\076"), /* <de1/> */
+ OSXET("\074\144\143\062\057\076"), /* <de2/> */
+ OSXET("\074\144\143\063\057\076"), /* <de3/> */
+ OSXET("\074\144\143\064\057\076"), /* <de4/> */
+ OSXET("\074\156\141\153\057\076"), /* <nak/> */
+ OSXET("\074\163\171\156\057\076"), /* <syn/> */
+ OSXET("\074\145\164\142\057\076"), /* <etb/> */
+ OSXET("\074\143\141\156\057\076"), /* <can/> */
+ OSXET("\074\145\155\057\076"), /* <em/> */
+ OSXET("\074\163\165\142\057\076"), /* <sub/> */
+ OSXET("\074\145\163\143\057\076"), /* <esc/> */
+ OSXET("\074\151\163\064\057\076"), /* <is4/> */
+ OSXET("\074\151\163\063\057\076"), /* <is3/> */
+ OSXET("\074\151\163\062\057\076"), /* <is2/> */
+ OSXET("\074\151\163\061\057\076"), /* <is1/> */
+ { 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("<absent>", 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("<absent>", 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;
+}
+
git.stg.codes / stg.git / blobdiff