remove libasn1c dependency and use asn1c without libasn1c
TODO: re-introduce talloc integration for asn1 runtime
Change-Id: I2140509c5359727f304470249be2a726b9a8deb1
diff --git a/src/rspro/INTEGER.c b/src/rspro/INTEGER.c
new file mode 100644
index 0000000..b3f0da1
--- /dev/null
+++ b/src/rspro/INTEGER.c
@@ -0,0 +1,1492 @@
+/*-
+ * Copyright (c) 2003-2014 Lev Walkin <vlm@lionet.info>.
+ * All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#include <asn_internal.h>
+#include <INTEGER.h>
+#include <asn_codecs_prim.h> /* Encoder and decoder of a primitive type */
+#include <errno.h>
+
+/*
+ * INTEGER basic type description.
+ */
+static const ber_tlv_tag_t asn_DEF_INTEGER_tags[] = {
+ (ASN_TAG_CLASS_UNIVERSAL | (2 << 2))
+};
+asn_TYPE_descriptor_t asn_DEF_INTEGER = {
+ "INTEGER",
+ "INTEGER",
+ ASN__PRIMITIVE_TYPE_free,
+ INTEGER_print,
+ asn_generic_no_constraint,
+ ber_decode_primitive,
+ INTEGER_encode_der,
+ INTEGER_decode_xer,
+ INTEGER_encode_xer,
+#ifdef ASN_DISABLE_PER_SUPPORT
+ 0,
+ 0,
+ 0,
+ 0,
+#else
+ INTEGER_decode_uper, /* Unaligned PER decoder */
+ INTEGER_encode_uper, /* Unaligned PER encoder */
+ INTEGER_decode_aper,
+ INTEGER_encode_aper,
+#endif /* ASN_DISABLE_PER_SUPPORT */
+ 0, /* Use generic outmost tag fetcher */
+ asn_DEF_INTEGER_tags,
+ sizeof(asn_DEF_INTEGER_tags) / sizeof(asn_DEF_INTEGER_tags[0]),
+ asn_DEF_INTEGER_tags, /* Same as above */
+ sizeof(asn_DEF_INTEGER_tags) / sizeof(asn_DEF_INTEGER_tags[0]),
+ 0, /* No PER visible constraints */
+ 0, 0, /* No members */
+ 0 /* No specifics */
+};
+
+/*
+ * Encode INTEGER type using DER.
+ */
+asn_enc_rval_t
+INTEGER_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) {
+ INTEGER_t *st = (INTEGER_t *)sptr;
+
+ ASN_DEBUG("%s %s as INTEGER (tm=%d)",
+ cb?"Encoding":"Estimating", td->name, tag_mode);
+
+ /*
+ * Canonicalize integer in the buffer.
+ * (Remove too long sign extension, remove some first 0x00 bytes)
+ */
+ if(st->buf) {
+ uint8_t *buf = st->buf;
+ uint8_t *end1 = buf + st->size - 1;
+ int shift;
+
+ /* Compute the number of superfluous leading bytes */
+ for(; buf < end1; buf++) {
+ /*
+ * If the contents octets of an integer value encoding
+ * consist of more than one octet, then the bits of the
+ * first octet and bit 8 of the second octet:
+ * a) shall not all be ones; and
+ * b) shall not all be zero.
+ */
+ switch(*buf) {
+ case 0x00: if((buf[1] & 0x80) == 0)
+ continue;
+ break;
+ case 0xff: if((buf[1] & 0x80))
+ continue;
+ break;
+ }
+ break;
+ }
+
+ /* Remove leading superfluous bytes from the integer */
+ shift = buf - st->buf;
+ if(shift) {
+ uint8_t *nb = st->buf;
+ uint8_t *end;
+
+ st->size -= shift; /* New size, minus bad bytes */
+ end = nb + st->size;
+
+ for(; nb < end; nb++, buf++)
+ *nb = *buf;
+ }
+
+ } /* if(1) */
+
+ return der_encode_primitive(td, sptr, tag_mode, tag, cb, app_key);
+}
+
+static const asn_INTEGER_enum_map_t *INTEGER_map_enum2value(asn_INTEGER_specifics_t *specs, const char *lstart, const char *lstop);
+
+/*
+ * INTEGER specific human-readable output.
+ */
+static ssize_t
+INTEGER__dump(const asn_TYPE_descriptor_t *td, const INTEGER_t *st, asn_app_consume_bytes_f *cb, void *app_key, int plainOrXER) {
+ asn_INTEGER_specifics_t *specs=(asn_INTEGER_specifics_t *)td->specifics;
+ char scratch[32]; /* Enough for 64-bit integer */
+ uint8_t *buf = st->buf;
+ uint8_t *buf_end = st->buf + st->size;
+ signed long value;
+ ssize_t wrote = 0;
+ char *p;
+ int ret;
+
+ if(specs && specs->field_unsigned)
+ ret = asn_INTEGER2ulong(st, (unsigned long *)&value);
+ else
+ ret = asn_INTEGER2long(st, &value);
+
+ /* Simple case: the integer size is small */
+ if(ret == 0) {
+ const asn_INTEGER_enum_map_t *el;
+ size_t scrsize;
+ char *scr;
+
+ el = (value >= 0 || !specs || !specs->field_unsigned)
+ ? INTEGER_map_value2enum(specs, value) : 0;
+ if(el) {
+ scrsize = el->enum_len + 32;
+ scr = (char *)alloca(scrsize);
+ if(plainOrXER == 0)
+ ret = snprintf(scr, scrsize,
+ "%ld (%s)", value, el->enum_name);
+ else
+ ret = snprintf(scr, scrsize,
+ "<%s/>", el->enum_name);
+ } else if(plainOrXER && specs && specs->strict_enumeration) {
+ ASN_DEBUG("ASN.1 forbids dealing with "
+ "unknown value of ENUMERATED type");
+ errno = EPERM;
+ return -1;
+ } else {
+ scrsize = sizeof(scratch);
+ scr = scratch;
+ ret = snprintf(scr, scrsize,
+ (specs && specs->field_unsigned)
+ ?"%lu":"%ld", value);
+ }
+ assert(ret > 0 && (size_t)ret < scrsize);
+ return (cb(scr, ret, app_key) < 0) ? -1 : ret;
+ } else if(plainOrXER && specs && specs->strict_enumeration) {
+ /*
+ * Here and earlier, we cannot encode the ENUMERATED values
+ * if there is no corresponding identifier.
+ */
+ ASN_DEBUG("ASN.1 forbids dealing with "
+ "unknown value of ENUMERATED type");
+ errno = EPERM;
+ return -1;
+ }
+
+ /* Output in the long xx:yy:zz... format */
+ /* TODO: replace with generic algorithm (Knuth TAOCP Vol 2, 4.3.1) */
+ for(p = scratch; buf < buf_end; buf++) {
+ const char * const h2c = "0123456789ABCDEF";
+ if((p - scratch) >= (ssize_t)(sizeof(scratch) - 4)) {
+ /* Flush buffer */
+ if(cb(scratch, p - scratch, app_key) < 0)
+ return -1;
+ wrote += p - scratch;
+ p = scratch;
+ }
+ *p++ = h2c[*buf >> 4];
+ *p++ = h2c[*buf & 0x0F];
+ *p++ = 0x3a; /* ":" */
+ }
+ if(p != scratch)
+ p--; /* Remove the last ":" */
+
+ wrote += p - scratch;
+ return (cb(scratch, p - scratch, app_key) < 0) ? -1 : wrote;
+}
+
+/*
+ * INTEGER specific human-readable output.
+ */
+int
+INTEGER_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel,
+ asn_app_consume_bytes_f *cb, void *app_key) {
+ const INTEGER_t *st = (const INTEGER_t *)sptr;
+ ssize_t ret;
+
+ (void)td;
+ (void)ilevel;
+
+ if(!st || !st->buf)
+ ret = cb("<absent>", 8, app_key);
+ else
+ ret = INTEGER__dump(td, st, cb, app_key, 0);
+
+ return (ret < 0) ? -1 : 0;
+}
+
+struct e2v_key {
+ const char *start;
+ const char *stop;
+ const asn_INTEGER_enum_map_t *vemap;
+ const unsigned int *evmap;
+};
+static int
+INTEGER__compar_enum2value(const void *kp, const void *am) {
+ const struct e2v_key *key = (const struct e2v_key *)kp;
+ const asn_INTEGER_enum_map_t *el = (const asn_INTEGER_enum_map_t *)am;
+ const char *ptr, *end, *name;
+
+ /* Remap the element (sort by different criterion) */
+ el = key->vemap + key->evmap[el - key->vemap];
+
+ /* Compare strings */
+ for(ptr = key->start, end = key->stop, name = el->enum_name;
+ ptr < end; ptr++, name++) {
+ if(*ptr != *name)
+ return *(const unsigned char *)ptr
+ - *(const unsigned char *)name;
+ }
+ return name[0] ? -1 : 0;
+}
+
+static const asn_INTEGER_enum_map_t *
+INTEGER_map_enum2value(asn_INTEGER_specifics_t *specs, const char *lstart, const char *lstop) {
+ const asn_INTEGER_enum_map_t *el_found;
+ int count = specs ? specs->map_count : 0;
+ struct e2v_key key;
+ const char *lp;
+
+ if(!count) return NULL;
+
+ /* Guaranteed: assert(lstart < lstop); */
+ /* Figure out the tag name */
+ for(lstart++, lp = lstart; lp < lstop; lp++) {
+ switch(*lp) {
+ case 9: case 10: case 11: case 12: case 13: case 32: /* WSP */
+ case 0x2f: /* '/' */ case 0x3e: /* '>' */
+ break;
+ default:
+ continue;
+ }
+ break;
+ }
+ if(lp == lstop) return NULL; /* No tag found */
+ lstop = lp;
+
+ key.start = lstart;
+ key.stop = lstop;
+ key.vemap = specs->value2enum;
+ key.evmap = specs->enum2value;
+ el_found = (asn_INTEGER_enum_map_t *)bsearch(&key,
+ specs->value2enum, count, sizeof(specs->value2enum[0]),
+ INTEGER__compar_enum2value);
+ if(el_found) {
+ /* Remap enum2value into value2enum */
+ el_found = key.vemap + key.evmap[el_found - key.vemap];
+ }
+ return el_found;
+}
+
+static int
+INTEGER__compar_value2enum(const void *kp, const void *am) {
+ long a = *(const long *)kp;
+ const asn_INTEGER_enum_map_t *el = (const asn_INTEGER_enum_map_t *)am;
+ long b = el->nat_value;
+ if(a < b) return -1;
+ else if(a == b) return 0;
+ else return 1;
+}
+
+const asn_INTEGER_enum_map_t *
+INTEGER_map_value2enum(asn_INTEGER_specifics_t *specs, long value) {
+ int count = specs ? specs->map_count : 0;
+ if(!count) return 0;
+ return (asn_INTEGER_enum_map_t *)bsearch(&value, specs->value2enum,
+ count, sizeof(specs->value2enum[0]),
+ INTEGER__compar_value2enum);
+}
+
+static int
+INTEGER_st_prealloc(INTEGER_t *st, int min_size) {
+ void *p = MALLOC(min_size + 1);
+ if(p) {
+ void *b = st->buf;
+ st->size = 0;
+ st->buf = p;
+ FREEMEM(b);
+ return 0;
+ } else {
+ return -1;
+ }
+}
+
+/*
+ * Decode the chunk of XML text encoding INTEGER.
+ */
+static enum xer_pbd_rval
+INTEGER__xer_body_decode(asn_TYPE_descriptor_t *td, void *sptr, const void *chunk_buf, size_t chunk_size) {
+ INTEGER_t *st = (INTEGER_t *)sptr;
+ long dec_value;
+ long hex_value = 0;
+ const char *lp;
+ const char *lstart = (const char *)chunk_buf;
+ const char *lstop = lstart + chunk_size;
+ enum {
+ ST_LEADSPACE,
+ ST_SKIPSPHEX,
+ ST_WAITDIGITS,
+ ST_DIGITS,
+ ST_DIGITS_TRAILSPACE,
+ ST_HEXDIGIT1,
+ ST_HEXDIGIT2,
+ ST_HEXDIGITS_TRAILSPACE,
+ ST_HEXCOLON,
+ ST_END_ENUM,
+ ST_UNEXPECTED
+ } state = ST_LEADSPACE;
+ const char *dec_value_start = 0; /* INVARIANT: always !0 in ST_DIGITS */
+ const char *dec_value_end = 0;
+
+ if(chunk_size)
+ ASN_DEBUG("INTEGER body %ld 0x%2x..0x%2x",
+ (long)chunk_size, *lstart, lstop[-1]);
+
+ if(INTEGER_st_prealloc(st, (chunk_size/3) + 1))
+ return XPBD_SYSTEM_FAILURE;
+
+ /*
+ * We may have received a tag here. It will be processed inline.
+ * Use strtoul()-like code and serialize the result.
+ */
+ for(lp = lstart; lp < lstop; lp++) {
+ int lv = *lp;
+ switch(lv) {
+ case 0x09: case 0x0a: case 0x0d: case 0x20:
+ switch(state) {
+ case ST_LEADSPACE:
+ case ST_DIGITS_TRAILSPACE:
+ case ST_HEXDIGITS_TRAILSPACE:
+ case ST_SKIPSPHEX:
+ continue;
+ case ST_DIGITS:
+ dec_value_end = lp;
+ state = ST_DIGITS_TRAILSPACE;
+ continue;
+ case ST_HEXCOLON:
+ state = ST_HEXDIGITS_TRAILSPACE;
+ continue;
+ default:
+ break;
+ }
+ break;
+ case 0x2d: /* '-' */
+ if(state == ST_LEADSPACE) {
+ dec_value = 0;
+ dec_value_start = lp;
+ state = ST_WAITDIGITS;
+ continue;
+ }
+ break;
+ case 0x2b: /* '+' */
+ if(state == ST_LEADSPACE) {
+ dec_value = 0;
+ dec_value_start = lp;
+ state = ST_WAITDIGITS;
+ continue;
+ }
+ break;
+ case 0x30: case 0x31: case 0x32: case 0x33: case 0x34:
+ case 0x35: case 0x36: case 0x37: case 0x38: case 0x39:
+ switch(state) {
+ case ST_DIGITS: continue;
+ case ST_SKIPSPHEX: /* Fall through */
+ case ST_HEXDIGIT1:
+ hex_value = (lv - 0x30) << 4;
+ state = ST_HEXDIGIT2;
+ continue;
+ case ST_HEXDIGIT2:
+ hex_value += (lv - 0x30);
+ state = ST_HEXCOLON;
+ st->buf[st->size++] = (uint8_t)hex_value;
+ continue;
+ case ST_HEXCOLON:
+ return XPBD_BROKEN_ENCODING;
+ case ST_LEADSPACE:
+ dec_value = 0;
+ dec_value_start = lp;
+ /* FALL THROUGH */
+ case ST_WAITDIGITS:
+ state = ST_DIGITS;
+ continue;
+ default:
+ break;
+ }
+ break;
+ case 0x3c: /* '<', start of XML encoded enumeration */
+ if(state == ST_LEADSPACE) {
+ const asn_INTEGER_enum_map_t *el;
+ el = INTEGER_map_enum2value(
+ (asn_INTEGER_specifics_t *)
+ td->specifics, lstart, lstop);
+ if(el) {
+ ASN_DEBUG("Found \"%s\" => %lld",
+ el->enum_name, el->nat_value);
+ dec_value = el->nat_value;
+ state = ST_END_ENUM;
+ lp = lstop - 1;
+ continue;
+ }
+ ASN_DEBUG("Unknown identifier for INTEGER");
+ }
+ return XPBD_BROKEN_ENCODING;
+ case 0x3a: /* ':' */
+ if(state == ST_HEXCOLON) {
+ /* This colon is expected */
+ state = ST_HEXDIGIT1;
+ continue;
+ } else if(state == ST_DIGITS) {
+ /* The colon here means that we have
+ * decoded the first two hexadecimal
+ * places as a decimal value.
+ * Switch decoding mode. */
+ ASN_DEBUG("INTEGER re-evaluate as hex form");
+ state = ST_SKIPSPHEX;
+ dec_value_start = 0;
+ lp = lstart - 1;
+ continue;
+ } else {
+ ASN_DEBUG("state %d at %ld", state, (long)(lp - lstart));
+ break;
+ }
+ /* [A-Fa-f] */
+ case 0x41:case 0x42:case 0x43:case 0x44:case 0x45:case 0x46:
+ case 0x61:case 0x62:case 0x63:case 0x64:case 0x65:case 0x66:
+ switch(state) {
+ case ST_SKIPSPHEX:
+ case ST_LEADSPACE: /* Fall through */
+ case ST_HEXDIGIT1:
+ hex_value = lv - ((lv < 0x61) ? 0x41 : 0x61);
+ hex_value += 10;
+ hex_value <<= 4;
+ state = ST_HEXDIGIT2;
+ continue;
+ case ST_HEXDIGIT2:
+ hex_value += lv - ((lv < 0x61) ? 0x41 : 0x61);
+ hex_value += 10;
+ st->buf[st->size++] = (uint8_t)hex_value;
+ state = ST_HEXCOLON;
+ continue;
+ case ST_DIGITS:
+ ASN_DEBUG("INTEGER re-evaluate as hex form");
+ state = ST_SKIPSPHEX;
+ dec_value_start = 0;
+ lp = lstart - 1;
+ continue;
+ default:
+ break;
+ }
+ break;
+ }
+
+ /* Found extra non-numeric stuff */
+ ASN_DEBUG("INTEGER :: Found non-numeric 0x%2x at %ld",
+ lv, (long)(lp - lstart));
+ state = ST_UNEXPECTED;
+ break;
+ }
+
+ switch(state) {
+ case ST_END_ENUM:
+ /* Got a complete and valid enumeration encoded as a tag. */
+ break;
+ case ST_DIGITS:
+ dec_value_end = lstop;
+ /* FALL THROUGH */
+ case ST_DIGITS_TRAILSPACE:
+ /* The last symbol encountered was a digit. */
+ switch(asn_strtol_lim(dec_value_start, &dec_value_end, &dec_value)) {
+ case ASN_STRTOL_OK:
+ break;
+ case ASN_STRTOL_ERROR_RANGE:
+ return XPBD_DECODER_LIMIT;
+ case ASN_STRTOL_ERROR_INVAL:
+ case ASN_STRTOL_EXPECT_MORE:
+ case ASN_STRTOL_EXTRA_DATA:
+ return XPBD_BROKEN_ENCODING;
+ }
+ break;
+ case ST_HEXCOLON:
+ case ST_HEXDIGITS_TRAILSPACE:
+ st->buf[st->size] = 0; /* Just in case termination */
+ return XPBD_BODY_CONSUMED;
+ case ST_HEXDIGIT1:
+ case ST_HEXDIGIT2:
+ case ST_SKIPSPHEX:
+ return XPBD_BROKEN_ENCODING;
+ case ST_LEADSPACE:
+ /* Content not found */
+ return XPBD_NOT_BODY_IGNORE;
+ case ST_WAITDIGITS:
+ case ST_UNEXPECTED:
+ ASN_DEBUG("INTEGER: No useful digits (state %d)", state);
+ return XPBD_BROKEN_ENCODING; /* No digits */
+ }
+
+ /*
+ * Convert the result of parsing of enumeration or a straight
+ * decimal value into a BER representation.
+ */
+ if(asn_long2INTEGER(st, dec_value))
+ return XPBD_SYSTEM_FAILURE;
+
+ return XPBD_BODY_CONSUMED;
+}
+
+asn_dec_rval_t
+INTEGER_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) {
+
+ return xer_decode_primitive(opt_codec_ctx, td,
+ sptr, sizeof(INTEGER_t), opt_mname,
+ buf_ptr, size, INTEGER__xer_body_decode);
+}
+
+asn_enc_rval_t
+INTEGER_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) {
+ const INTEGER_t *st = (const INTEGER_t *)sptr;
+ asn_enc_rval_t er;
+
+ (void)ilevel;
+ (void)flags;
+
+ if(!st || !st->buf)
+ _ASN_ENCODE_FAILED;
+
+ er.encoded = INTEGER__dump(td, st, cb, app_key, 1);
+ if(er.encoded < 0) _ASN_ENCODE_FAILED;
+
+ _ASN_ENCODED_OK(er);
+}
+
+#ifndef ASN_DISABLE_PER_SUPPORT
+
+asn_dec_rval_t
+INTEGER_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_INTEGER_specifics_t *specs=(asn_INTEGER_specifics_t *)td->specifics;
+ asn_dec_rval_t rval = { RC_OK, 0 };
+ INTEGER_t *st = (INTEGER_t *)*sptr;
+ asn_per_constraint_t *ct;
+ int repeat;
+
+ (void)opt_codec_ctx;
+
+ if(!st) {
+ st = (INTEGER_t *)(*sptr = CALLOC(1, sizeof(*st)));
+ if(!st) _ASN_DECODE_FAILED;
+ }
+
+ if(!constraints) constraints = td->per_constraints;
+ ct = constraints ? &constraints->value : 0;
+
+ if(ct && ct->flags & APC_EXTENSIBLE) {
+ int inext = per_get_few_bits(pd, 1);
+ if(inext < 0) _ASN_DECODE_STARVED;
+ if(inext) ct = 0;
+ }
+
+ FREEMEM(st->buf);
+ st->buf = 0;
+ st->size = 0;
+ if(ct) {
+ if(ct->flags & APC_SEMI_CONSTRAINED) {
+ st->buf = (uint8_t *)CALLOC(1, 2);
+ if(!st->buf) _ASN_DECODE_FAILED;
+ st->size = 1;
+ } else if(ct->flags & APC_CONSTRAINED && ct->range_bits >= 0) {
+ size_t size = (ct->range_bits + 7) >> 3;
+ st->buf = (uint8_t *)MALLOC(1 + size + 1);
+ if(!st->buf) _ASN_DECODE_FAILED;
+ st->size = size;
+ }
+ }
+
+ /* X.691-2008/11, #13.2.2, constrained whole number */
+ if(ct && ct->flags != APC_UNCONSTRAINED) {
+ /* #11.5.6 */
+ ASN_DEBUG("Integer with range %d bits", ct->range_bits);
+ if(ct->range_bits >= 0) {
+ if((size_t)ct->range_bits > 8 * sizeof(unsigned long))
+ _ASN_DECODE_FAILED;
+
+ if(specs && specs->field_unsigned) {
+ unsigned long uvalue;
+ if(uper_get_constrained_whole_number(pd,
+ &uvalue, ct->range_bits))
+ _ASN_DECODE_STARVED;
+ ASN_DEBUG("Got value %lu + low %lld",
+ uvalue, ct->lower_bound);
+ uvalue += ct->lower_bound;
+ if(asn_ulong2INTEGER(st, uvalue))
+ _ASN_DECODE_FAILED;
+ } else {
+ unsigned long svalue;
+ if(uper_get_constrained_whole_number(pd,
+ &svalue, ct->range_bits))
+ _ASN_DECODE_STARVED;
+ ASN_DEBUG("Got value %ld + low %ld",
+ svalue, ct->lower_bound);
+ svalue += ct->lower_bound;
+ if(asn_long2INTEGER(st, svalue))
+ _ASN_DECODE_FAILED;
+ }
+ return rval;
+ }
+ } else {
+ ASN_DEBUG("Decoding unconstrained integer %s", td->name);
+ }
+
+ /* X.691, #12.2.3, #12.2.4 */
+ do {
+ ssize_t len;
+ void *p;
+ int ret;
+
+ /* Get the PER length */
+ len = uper_get_length(pd, -1, &repeat);
+ if(len < 0) _ASN_DECODE_STARVED;
+
+ p = REALLOC(st->buf, st->size + len + 1);
+ if(!p) _ASN_DECODE_FAILED;
+ st->buf = (uint8_t *)p;
+
+ ret = per_get_many_bits(pd, &st->buf[st->size], 0, 8 * len);
+ if(ret < 0) _ASN_DECODE_STARVED;
+ st->size += len;
+ } while(repeat);
+ st->buf[st->size] = 0; /* JIC */
+
+ /* #12.2.3 */
+ if(ct && ct->lower_bound) {
+ /*
+ * TODO: replace by in-place arithmetics.
+ */
+ long value;
+ if(asn_INTEGER2long(st, &value))
+ _ASN_DECODE_FAILED;
+ if(asn_long2INTEGER(st, value + ct->lower_bound))
+ _ASN_DECODE_FAILED;
+ }
+
+ return rval;
+}
+
+asn_dec_rval_t
+INTEGER_decode_aper(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_INTEGER_specifics_t *specs=(asn_INTEGER_specifics_t *)td->specifics;
+ asn_dec_rval_t rval = { RC_OK, 0 };
+ INTEGER_t *st = (INTEGER_t *)*sptr;
+ asn_per_constraint_t *ct;
+ int repeat;
+
+ (void)opt_codec_ctx;
+
+ if(!st) {
+ st = (INTEGER_t *)(*sptr = CALLOC(1, sizeof(*st)));
+ if(!st) _ASN_DECODE_FAILED;
+ }
+
+ if(!constraints) constraints = td->per_constraints;
+ ct = constraints ? &constraints->value : 0;
+
+ if(ct && ct->flags & APC_EXTENSIBLE) {
+ int inext = per_get_few_bits(pd, 1);
+ if(inext < 0) _ASN_DECODE_STARVED;
+ if(inext) ct = 0;
+ }
+
+ FREEMEM(st->buf);
+ st->buf = 0;
+ st->size = 0;
+ if(ct) {
+ if(ct->flags & APC_SEMI_CONSTRAINED) {
+ st->buf = (uint8_t *)CALLOC(1, 2);
+ if(!st->buf) _ASN_DECODE_FAILED;
+ st->size = 1;
+ } else if(ct->flags & APC_CONSTRAINED && ct->range_bits >= 0) {
+ size_t size = (ct->range_bits + 7) >> 3;
+ st->buf = (uint8_t *)MALLOC(1 + size + 1);
+ if(!st->buf) _ASN_DECODE_FAILED;
+ st->size = size;
+ }
+ }
+
+ /* X.691, #12.2.2 */
+ if(ct && ct->flags != APC_UNCONSTRAINED) {
+ /* #10.5.6 */
+ ASN_DEBUG("Integer with range %d bits", ct->range_bits);
+ if(ct->range_bits >= 0) {
+ if (ct->range_bits > 16) {
+ int max_range_bytes = (ct->range_bits >> 3) +
+ (((ct->range_bits % 8) > 0) ? 1 : 0);
+ int length = 0, i;
+ int64_t value = 0;
+
+ for (i = 1; ; i++) {
+ int upper = 1 << i;
+ if (upper >= max_range_bytes)
+ break;
+ }
+ ASN_DEBUG("Can encode %d (%d bytes) in %d bits", ct->range_bits,
+ max_range_bytes, i);
+
+ if ((length = per_get_few_bits(pd, i)) < 0)
+ _ASN_DECODE_FAILED;
+
+ /* X.691 #12.2.6 length determinant + lb (1) */
+ length += 1;
+ ASN_DEBUG("Got length %d", length);
+
+ if (aper_get_align(pd) != 0)
+ _ASN_DECODE_STARVED;
+
+ while (length--) {
+ int buf = per_get_few_bits(pd, 8);
+ if (buf < 0)
+ _ASN_DECODE_STARVED;
+ value += (((int64_t)buf) << (8 * length));
+ }
+
+ value += ct->lower_bound;
+ if((specs && specs->field_unsigned)
+ ? asn_uint642INTEGER(st, value)
+ : asn_int642INTEGER(st, value))
+ _ASN_DECODE_FAILED;
+ ASN_DEBUG("Got value %lld + low %lld",
+ value, ct->lower_bound);
+ } else {
+ long value = 0;
+ if (ct->range_bits < 8) {
+ value = per_get_few_bits(pd, ct->range_bits);
+ if(value < 0) _ASN_DECODE_STARVED;
+ } else if (ct->range_bits == 8) {
+ if (aper_get_align(pd) < 0)
+ _ASN_DECODE_FAILED;
+ value = per_get_few_bits(pd, ct->range_bits);
+ if(value < 0) _ASN_DECODE_STARVED;
+ } else {
+ /* Align */
+ if (aper_get_align(pd) < 0)
+ _ASN_DECODE_FAILED;
+ value = per_get_few_bits(pd, 16);
+ if(value < 0) _ASN_DECODE_STARVED;
+ }
+ value += ct->lower_bound;
+ if((specs && specs->field_unsigned)
+ ? asn_ulong2INTEGER(st, value)
+ : asn_long2INTEGER(st, value))
+ _ASN_DECODE_FAILED;
+ ASN_DEBUG("Got value %ld + low %lld",
+ value, ct->lower_bound);
+ }
+ return rval;
+ } else {
+ _ASN_DECODE_FAILED;
+ }
+ } else {
+ ASN_DEBUG("Decoding unconstrained integer %s", td->name);
+ }
+
+ /* X.691, #12.2.3, #12.2.4 */
+ do {
+ ssize_t len;
+ void *p;
+ int ret;
+
+ /* Get the PER length */
+ len = aper_get_length(pd, -1, -1, &repeat);
+ if(len < 0) _ASN_DECODE_STARVED;
+
+ p = REALLOC(st->buf, st->size + len + 1);
+ if(!p) _ASN_DECODE_FAILED;
+ st->buf = (uint8_t *)p;
+
+ ret = per_get_many_bits(pd, &st->buf[st->size], 0, 8 * len);
+ if(ret < 0) _ASN_DECODE_STARVED;
+ st->size += len;
+ } while(repeat);
+ st->buf[st->size] = 0; /* JIC */
+
+ /* #12.2.3 */
+ if(ct && ct->lower_bound) {
+ /*
+ * TODO: replace by in-place arithmetics.
+ */
+ long value;
+ if(asn_INTEGER2long(st, &value))
+ _ASN_DECODE_FAILED;
+ if(asn_long2INTEGER(st, value + ct->lower_bound))
+ _ASN_DECODE_FAILED;
+ }
+
+ return rval;
+}
+
+asn_enc_rval_t
+INTEGER_encode_uper(asn_TYPE_descriptor_t *td,
+ asn_per_constraints_t *constraints, void *sptr, asn_per_outp_t *po) {
+ asn_INTEGER_specifics_t *specs=(asn_INTEGER_specifics_t *)td->specifics;
+ asn_enc_rval_t er;
+ INTEGER_t *st = (INTEGER_t *)sptr;
+ const uint8_t *buf;
+ const uint8_t *end;
+ asn_per_constraint_t *ct;
+ long value = 0;
+
+ if(!st || st->size == 0) _ASN_ENCODE_FAILED;
+
+ if(!constraints) constraints = td->per_constraints;
+ ct = constraints ? &constraints->value : 0;
+
+ er.encoded = 0;
+
+ if(ct) {
+ int inext = 0;
+ if(specs && specs->field_unsigned) {
+ unsigned long uval;
+ if(asn_INTEGER2ulong(st, &uval))
+ _ASN_ENCODE_FAILED;
+ /* Check proper range */
+ if(ct->flags & APC_SEMI_CONSTRAINED) {
+ if(uval < (unsigned long)ct->lower_bound)
+ inext = 1;
+ } else if(ct->range_bits >= 0) {
+ if(uval < (unsigned long)ct->lower_bound
+ || uval > (unsigned long)ct->upper_bound)
+ inext = 1;
+ }
+ ASN_DEBUG("Value %lu (%02x/%d) lb %llu ub %llu %s",
+ uval, st->buf[0], st->size,
+ ct->lower_bound, ct->upper_bound,
+ inext ? "ext" : "fix");
+ value = uval;
+ } else {
+ if(asn_INTEGER2long(st, &value))
+ _ASN_ENCODE_FAILED;
+ /* Check proper range */
+ if(ct->flags & APC_SEMI_CONSTRAINED) {
+ if(value < ct->lower_bound)
+ inext = 1;
+ } else if(ct->range_bits >= 0) {
+ if(value < ct->lower_bound
+ || value > ct->upper_bound)
+ inext = 1;
+ }
+ ASN_DEBUG("Value %ld (%02x/%d) lb %lld ub %lld %s",
+ value, st->buf[0], st->size,
+ ct->lower_bound, ct->upper_bound,
+ inext ? "ext" : "fix");
+ }
+ if(ct->flags & APC_EXTENSIBLE) {
+ if(per_put_few_bits(po, inext, 1))
+ _ASN_ENCODE_FAILED;
+ if(inext) ct = 0;
+ } else if(inext) {
+ _ASN_ENCODE_FAILED;
+ }
+ }
+
+
+ /* X.691-11/2008, #13.2.2, test if constrained whole number */
+ if(ct && ct->range_bits >= 0) {
+ /* #11.5.6 -> #11.3 */
+ ASN_DEBUG("Encoding integer %ld (%lu) with range %d bits",
+ value, value - ct->lower_bound, ct->range_bits);
+ unsigned long v = value - ct->lower_bound;
+ if(uper_put_constrained_whole_number_u(po, v, ct->range_bits))
+ _ASN_ENCODE_FAILED;
+ _ASN_ENCODED_OK(er);
+ }
+
+ if(ct && ct->lower_bound) {
+ ASN_DEBUG("Adjust lower bound to %lld", ct->lower_bound);
+ /* TODO: adjust lower bound */
+ _ASN_ENCODE_FAILED;
+ }
+
+ for(buf = st->buf, end = st->buf + st->size; buf < end;) {
+ ssize_t mayEncode = uper_put_length(po, end - buf);
+ if(mayEncode < 0)
+ _ASN_ENCODE_FAILED;
+ if(per_put_many_bits(po, buf, 8 * mayEncode))
+ _ASN_ENCODE_FAILED;
+ buf += mayEncode;
+ }
+
+ _ASN_ENCODED_OK(er);
+}
+
+asn_enc_rval_t
+INTEGER_encode_aper(asn_TYPE_descriptor_t *td,
+ asn_per_constraints_t *constraints, void *sptr, asn_per_outp_t *po) {
+ asn_INTEGER_specifics_t *specs=(asn_INTEGER_specifics_t *)td->specifics;
+ asn_enc_rval_t er;
+ INTEGER_t *st = (INTEGER_t *)sptr;
+ const uint8_t *buf;
+ const uint8_t *end;
+ asn_per_constraint_t *ct;
+ int64_t value = 0;
+
+ if(!st || st->size == 0) _ASN_ENCODE_FAILED;
+
+ if(!constraints) constraints = td->per_constraints;
+ ct = constraints ? &constraints->value : 0;
+
+ er.encoded = 0;
+
+ if(ct) {
+ int inext = 0;
+ if(specs && specs->field_unsigned) {
+ uint64_t uval;
+ if(asn_INTEGER2uint64(st, &uval))
+ _ASN_ENCODE_FAILED;
+ /* Check proper range */
+ if(ct->flags & APC_SEMI_CONSTRAINED) {
+ if(uval < (unsigned long long)ct->lower_bound)
+ inext = 1;
+ } else if(ct->range_bits >= 0) {
+ if(uval < (unsigned long long)ct->lower_bound
+ || uval > (unsigned long long)ct->upper_bound)
+ inext = 1;
+ }
+ ASN_DEBUG("Value %llu (%02x/%d) lb %llu ub %llu %s",
+ uval, st->buf[0], st->size,
+ ct->lower_bound, ct->upper_bound,
+ inext ? "ext" : "fix");
+ value = uval;
+ } else {
+ if(asn_INTEGER2int64(st, &value)) _ASN_ENCODE_FAILED;
+ /* Check proper range */
+ if(ct->flags & APC_SEMI_CONSTRAINED) {
+ if(value < ct->lower_bound)
+ inext = 1;
+ } else if(ct->range_bits >= 0) {
+ if(value < ct->lower_bound
+ || value > ct->upper_bound)
+ inext = 1;
+ }
+ ASN_DEBUG("Value %lld (%02x/%d) lb %lld ub %lld %s",
+ value, st->buf[0], st->size,
+ ct->lower_bound, ct->upper_bound,
+ inext ? "ext" : "fix");
+ }
+ if(ct->flags & APC_EXTENSIBLE) {
+ if(per_put_few_bits(po, inext, 1))
+ _ASN_ENCODE_FAILED;
+ if(inext) ct = 0;
+ } else if(inext) {
+ _ASN_ENCODE_FAILED;
+ }
+ }
+
+ /* X.691, #12.2.2 */
+ if(ct && ct->range_bits >= 0) {
+ /* #10.5.6 */
+ ASN_DEBUG("Encoding integer %ld (%lu) with range %d bits",
+ value, value - ct->lower_bound, ct->range_bits);
+ unsigned long v = value - ct->lower_bound;
+
+ /* #12 <= 8 -> alignment ? */
+ if (ct->range_bits < 8) {
+ if(per_put_few_bits(po, 0x00 | v, ct->range_bits))
+ _ASN_ENCODE_FAILED;
+ } else if (ct->range_bits == 8) {
+ if(aper_put_align(po) < 0)
+ _ASN_ENCODE_FAILED;
+ if(per_put_few_bits(po, 0x00 | v, ct->range_bits))
+ _ASN_ENCODE_FAILED;
+ } else if (ct->range_bits <= 16) {
+ // Consume the bytes to align on octet
+ if(aper_put_align(po) < 0)
+ _ASN_ENCODE_FAILED;
+ if(per_put_few_bits(po, 0x0000 | v,
+ 16))
+ _ASN_ENCODE_FAILED;
+ } else {
+ /* TODO: extend to >64 bits */
+ int64_t v64 = v;
+ int i, j;
+ int max_range_bytes = (ct->range_bits >> 3) +
+ (((ct->range_bits % 8) > 0) ? 1 : 0);
+
+ for (i = 1; ; i++) {
+ int upper = 1 << i;
+ if (upper >= max_range_bytes)
+ break;
+ }
+
+ for (j = sizeof(int64_t) -1; j != 0; j--) {
+ uint8_t val;
+ val = v64 >> (j * 8);
+ if (val != 0)
+ break;
+ }
+
+ /* Putting length in the minimum number of bits ex: 5 = 3bits */
+ if (per_put_few_bits(po, j, i))
+ _ASN_ENCODE_FAILED;
+
+ // Consume the bits to align on octet
+ if (aper_put_align(po) < 0)
+ _ASN_ENCODE_FAILED;
+
+ /* Put the value */
+ for (i = 0; i <= j; i++) {
+ if(per_put_few_bits(po, (v64 >> (8 * (j - i))) & 0xff, 8))
+ _ASN_ENCODE_FAILED;
+ }
+ }
+ _ASN_ENCODED_OK(er);
+ }
+
+ if(ct && ct->lower_bound) {
+ ASN_DEBUG("Adjust lower bound to %lld", ct->lower_bound);
+ /* TODO: adjust lower bound */
+ _ASN_ENCODE_FAILED;
+ }
+
+ for(buf = st->buf, end = st->buf + st->size; buf < end;) {
+ ssize_t mayEncode = aper_put_length(po, -1, end - buf);
+ if(mayEncode < 0)
+ _ASN_ENCODE_FAILED;
+ if(per_put_many_bits(po, buf, 8 * mayEncode))
+ _ASN_ENCODE_FAILED;
+ buf += mayEncode;
+ }
+
+ _ASN_ENCODED_OK(er);
+}
+
+#endif /* ASN_DISABLE_PER_SUPPORT */
+
+int
+asn_INTEGER2long(const INTEGER_t *iptr, long *lptr) {
+ uint8_t *b, *end;
+ size_t size;
+ long l;
+
+ /* Sanity checking */
+ if(!iptr || !iptr->buf || !lptr) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ /* Cache the begin/end of the buffer */
+ b = iptr->buf; /* Start of the INTEGER buffer */
+ size = iptr->size;
+ end = b + size; /* Where to stop */
+
+ if(size > sizeof(long)) {
+ uint8_t *end1 = end - 1;
+ /*
+ * Slightly more advanced processing,
+ * able to >sizeof(long) bytes,
+ * when the actual value is small
+ * (0x0000000000abcdef would yield a fine 0x00abcdef)
+ */
+ /* Skip out the insignificant leading bytes */
+ for(; b < end1; b++) {
+ switch(*b) {
+ case 0x00: if((b[1] & 0x80) == 0) continue; break;
+ case 0xff: if((b[1] & 0x80) != 0) continue; break;
+ }
+ break;
+ }
+
+ size = end - b;
+ if(size > sizeof(long)) {
+ /* Still cannot fit the long */
+ errno = ERANGE;
+ return -1;
+ }
+ }
+
+ /* Shortcut processing of a corner case */
+ if(end == b) {
+ *lptr = 0;
+ return 0;
+ }
+
+ /* Perform the sign initialization */
+ /* Actually l = -(*b >> 7); gains nothing, yet unreadable! */
+ if((*b >> 7)) l = -1; else l = 0;
+
+ /* Conversion engine */
+ for(; b < end; b++)
+ l = (l << 8) | *b;
+
+ *lptr = l;
+ return 0;
+}
+
+int
+asn_INTEGER2int64(const INTEGER_t *iptr, int64_t *lptr) {
+ uint8_t *b, *end;
+ size_t size;
+ int64_t l;
+
+ /* Sanity checking */
+ if(!iptr || !iptr->buf || !lptr) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ /* Cache the begin/end of the buffer */
+ b = iptr->buf; /* Start of the INTEGER buffer */
+ size = iptr->size;
+ end = b + size; /* Where to stop */
+
+ if(size > sizeof(int64_t)) {
+ uint8_t *end1 = end - 1;
+ /*
+ * Slightly more advanced processing,
+ * able to >sizeof(int64_t) bytes,
+ * when the actual value is small
+ * (0x0000000000abcdef would yield a fine 0x00abcdef)
+ */
+ /* Skip out the insignificant leading bytes */
+ for(; b < end1; b++) {
+ switch(*b) {
+ case 0x00: if((b[1] & 0x80) == 0) continue; break;
+ case 0xff: if((b[1] & 0x80) != 0) continue; break;
+ }
+ break;
+ }
+
+ size = end - b;
+ if(size > sizeof(int64_t)) {
+ /* Still cannot fit the int64_t */
+ errno = ERANGE;
+ return -1;
+ }
+ }
+
+ /* Shortcut processing of a corner case */
+ if(end == b) {
+ *lptr = 0;
+ return 0;
+ }
+
+ /* Perform the sign initialization */
+ /* Actually l = -(*b >> 7); gains nothing, yet unreadable! */
+ if((*b >> 7)) l = -1; else l = 0;
+
+ /* Conversion engine */
+ for(; b < end; b++)
+ l = (l << 8) | *b;
+
+ *lptr = l;
+ return 0;
+}
+
+int
+asn_INTEGER2ulong(const INTEGER_t *iptr, unsigned long *lptr) {
+ uint8_t *b, *end;
+ unsigned long l;
+ size_t size;
+
+ if(!iptr || !iptr->buf || !lptr) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ b = iptr->buf;
+ size = iptr->size;
+ end = b + size;
+
+ /* If all extra leading bytes are zeroes, ignore them */
+ for(; size > sizeof(unsigned long); b++, size--) {
+ if(*b) {
+ /* Value won't fit unsigned long */
+ errno = ERANGE;
+ return -1;
+ }
+ }
+
+ /* Conversion engine */
+ for(l = 0; b < end; b++)
+ l = (l << 8) | *b;
+
+ *lptr = l;
+ return 0;
+}
+
+int
+asn_INTEGER2uint64(const INTEGER_t *iptr, uint64_t *lptr) {
+ uint8_t *b, *end;
+ uint64_t l;
+ size_t size;
+
+ if(!iptr || !iptr->buf || !lptr) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ b = iptr->buf;
+ size = iptr->size;
+ end = b + size;
+
+ /* If all extra leading bytes are zeroes, ignore them */
+ for(; size > sizeof(uint64_t); b++, size--) {
+ if(*b) {
+ /* Value won't fit unsigned long */
+ errno = ERANGE;
+ return -1;
+ }
+ }
+
+ /* Conversion engine */
+ for(l = 0; b < end; b++)
+ l = (l << 8) | *b;
+
+ *lptr = l;
+ return 0;
+}
+
+int
+asn_ulong2INTEGER(INTEGER_t *st, unsigned long value) {
+ uint8_t *buf;
+ uint8_t *end;
+ uint8_t *b;
+ int shr;
+
+ if(value <= LONG_MAX)
+ return asn_long2INTEGER(st, value);
+
+ buf = (uint8_t *)MALLOC(1 + sizeof(value));
+ if(!buf) return -1;
+
+ end = buf + (sizeof(value) + 1);
+ buf[0] = 0;
+ for(b = buf + 1, shr = (sizeof(long)-1)*8; b < end; shr -= 8, b++)
+ *b = (uint8_t)(value >> shr);
+
+ if(st->buf) FREEMEM(st->buf);
+ st->buf = buf;
+ st->size = 1 + sizeof(value);
+
+ return 0;
+}
+
+int
+asn_uint642INTEGER(INTEGER_t *st, uint64_t value) {
+ uint8_t *buf;
+ uint8_t *end;
+ uint8_t *b;
+ int shr;
+
+ if(value <= INT64_MAX)
+ return asn_int642INTEGER(st, value);
+
+ buf = (uint8_t *)MALLOC(1 + sizeof(value));
+ if(!buf) return -1;
+
+ end = buf + (sizeof(value) + 1);
+ buf[0] = 0;
+ for(b = buf + 1, shr = (sizeof(value)-1)*8; b < end; shr -= 8, b++)
+ *b = (uint8_t)(value >> shr);
+
+ if(st->buf) FREEMEM(st->buf);
+ st->buf = buf;
+ st->size = 1 + sizeof(value);
+
+ return 0;
+}
+
+int
+asn_int642INTEGER(INTEGER_t *st, int64_t value) {
+ uint8_t *buf, *bp;
+ uint8_t *p;
+ uint8_t *pstart;
+ uint8_t *pend1;
+ int littleEndian = 1; /* Run-time detection */
+ int add;
+
+ if(!st) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ buf = (uint8_t *)MALLOC(sizeof(value));
+ if(!buf) return -1;
+
+ if(*(char *)&littleEndian) {
+ pstart = (uint8_t *)&value + sizeof(value) - 1;
+ pend1 = (uint8_t *)&value;
+ add = -1;
+ } else {
+ pstart = (uint8_t *)&value;
+ pend1 = pstart + sizeof(value) - 1;
+ add = 1;
+ }
+
+ /*
+ * If the contents octet consists of more than one octet,
+ * then bits of the first octet and bit 8 of the second octet:
+ * a) shall not all be ones; and
+ * b) shall not all be zero.
+ */
+ for(p = pstart; p != pend1; p += add) {
+ switch(*p) {
+ case 0x00: if((*(p+add) & 0x80) == 0)
+ continue;
+ break;
+ case 0xff: if((*(p+add) & 0x80))
+ continue;
+ break;
+ }
+ break;
+ }
+ /* Copy the integer body */
+ for(pstart = p, bp = buf, pend1 += add; p != pend1; p += add)
+ *bp++ = *p;
+
+ if(st->buf) FREEMEM(st->buf);
+ st->buf = buf;
+ st->size = bp - buf;
+
+ return 0;
+}
+
+int
+asn_long2INTEGER(INTEGER_t *st, long value) {
+ uint8_t *buf, *bp;
+ uint8_t *p;
+ uint8_t *pstart;
+ uint8_t *pend1;
+ int littleEndian = 1; /* Run-time detection */
+ int add;
+
+ if(!st) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ buf = (uint8_t *)MALLOC(sizeof(value));
+ if(!buf) return -1;
+
+ if(*(char *)&littleEndian) {
+ pstart = (uint8_t *)&value + sizeof(value) - 1;
+ pend1 = (uint8_t *)&value;
+ add = -1;
+ } else {
+ pstart = (uint8_t *)&value;
+ pend1 = pstart + sizeof(value) - 1;
+ add = 1;
+ }
+
+ /*
+ * If the contents octet consists of more than one octet,
+ * then bits of the first octet and bit 8 of the second octet:
+ * a) shall not all be ones; and
+ * b) shall not all be zero.
+ */
+ for(p = pstart; p != pend1; p += add) {
+ switch(*p) {
+ case 0x00: if((*(p+add) & 0x80) == 0)
+ continue;
+ break;
+ case 0xff: if((*(p+add) & 0x80))
+ continue;
+ break;
+ }
+ break;
+ }
+ /* Copy the integer body */
+ for(pstart = p, bp = buf, pend1 += add; p != pend1; p += add)
+ *bp++ = *p;
+
+ if(st->buf) FREEMEM(st->buf);
+ st->buf = buf;
+ st->size = bp - buf;
+
+ return 0;
+}
+
+/*
+ * This function is going to be DEPRECATED soon.
+ */
+enum asn_strtol_result_e
+asn_strtol(const char *str, const char *end, long *lp) {
+ const char *endp = end;
+
+ switch(asn_strtol_lim(str, &endp, lp)) {
+ case ASN_STRTOL_ERROR_RANGE:
+ return ASN_STRTOL_ERROR_RANGE;
+ case ASN_STRTOL_ERROR_INVAL:
+ return ASN_STRTOL_ERROR_INVAL;
+ case ASN_STRTOL_EXPECT_MORE:
+ return ASN_STRTOL_ERROR_INVAL; /* Retain old behavior */
+ case ASN_STRTOL_OK:
+ return ASN_STRTOL_OK;
+ case ASN_STRTOL_EXTRA_DATA:
+ return ASN_STRTOL_ERROR_INVAL; /* Retain old behavior */
+ }
+
+ return ASN_STRTOL_ERROR_INVAL; /* Retain old behavior */
+}
+
+/*
+ * Parse the number in the given string until the given *end position,
+ * returning the position after the last parsed character back using the
+ * same (*end) pointer.
+ * WARNING: This behavior is different from the standard strtol(3).
+ */
+enum asn_strtol_result_e
+asn_strtol_lim(const char *str, const char **end, long *lp) {
+ int sign = 1;
+ long l;
+
+ const long upper_boundary = LONG_MAX / 10;
+ long last_digit_max = LONG_MAX % 10;
+
+ if(str >= *end) return ASN_STRTOL_ERROR_INVAL;
+
+ switch(*str) {
+ case '-':
+ last_digit_max++;
+ sign = -1;
+ case '+':
+ str++;
+ if(str >= *end) {
+ *end = str;
+ return ASN_STRTOL_EXPECT_MORE;
+ }
+ }
+
+ for(l = 0; str < (*end); str++) {
+ switch(*str) {
+ case 0x30: case 0x31: case 0x32: case 0x33: case 0x34:
+ case 0x35: case 0x36: case 0x37: case 0x38: case 0x39: {
+ int d = *str - '0';
+ if(l < upper_boundary) {
+ l = l * 10 + d;
+ } else if(l == upper_boundary) {
+ if(d <= last_digit_max) {
+ if(sign > 0) {
+ l = l * 10 + d;
+ } else {
+ sign = 1;
+ l = -l * 10 - d;
+ }
+ } else {
+ *end = str;
+ return ASN_STRTOL_ERROR_RANGE;
+ }
+ } else {
+ *end = str;
+ return ASN_STRTOL_ERROR_RANGE;
+ }
+ }
+ continue;
+ default:
+ *end = str;
+ *lp = sign * l;
+ return ASN_STRTOL_EXTRA_DATA;
+ }
+ }
+
+ *end = str;
+ *lp = sign * l;
+ return ASN_STRTOL_OK;
+}
+