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-rw-r--r--src/OBJECT_IDENTIFIER.c727
1 files changed, 727 insertions, 0 deletions
diff --git a/src/OBJECT_IDENTIFIER.c b/src/OBJECT_IDENTIFIER.c
new file mode 100644
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--- /dev/null
+++ b/src/OBJECT_IDENTIFIER.c
@@ -0,0 +1,727 @@
+/*-
+ * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved.
+ * Redistribution and modifications are permitted subject to BSD license.
+ */
+#include <asn_internal.h>
+#include <OBJECT_IDENTIFIER.h>
+#include <limits.h> /* for CHAR_BIT */
+#include <errno.h>
+
+/*
+ * OBJECT IDENTIFIER basic type description.
+ */
+static ber_tlv_tag_t asn_DEF_OBJECT_IDENTIFIER_tags[] = {
+ (ASN_TAG_CLASS_UNIVERSAL | (6 << 2))
+};
+asn_TYPE_descriptor_t asn_DEF_OBJECT_IDENTIFIER = {
+ "OBJECT IDENTIFIER",
+ "OBJECT_IDENTIFIER",
+ ASN__PRIMITIVE_TYPE_free,
+ OBJECT_IDENTIFIER_print,
+ OBJECT_IDENTIFIER_constraint,
+ ber_decode_primitive,
+ der_encode_primitive,
+ OBJECT_IDENTIFIER_decode_xer,
+ OBJECT_IDENTIFIER_encode_xer,
+ 0, 0,
+ 0, /* Use generic outmost tag fetcher */
+ asn_DEF_OBJECT_IDENTIFIER_tags,
+ sizeof(asn_DEF_OBJECT_IDENTIFIER_tags)
+ / sizeof(asn_DEF_OBJECT_IDENTIFIER_tags[0]),
+ asn_DEF_OBJECT_IDENTIFIER_tags, /* Same as above */
+ sizeof(asn_DEF_OBJECT_IDENTIFIER_tags)
+ / sizeof(asn_DEF_OBJECT_IDENTIFIER_tags[0]),
+ 0, /* No PER visible constraints */
+ 0, 0, /* No members */
+ 0 /* No specifics */
+};
+
+
+int
+OBJECT_IDENTIFIER_constraint(asn_TYPE_descriptor_t *td, const void *sptr,
+ asn_app_constraint_failed_f *ctfailcb, void *app_key) {
+ const OBJECT_IDENTIFIER_t *st = (const OBJECT_IDENTIFIER_t *)sptr;
+
+ if(st && st->buf) {
+ if(st->size < 1) {
+ _ASN_CTFAIL(app_key, td,
+ "%s: at least one numerical value "
+ "expected (%s:%d)",
+ td->name, __FILE__, __LINE__);
+ return -1;
+ }
+ } else {
+ _ASN_CTFAIL(app_key, td,
+ "%s: value not given (%s:%d)",
+ td->name, __FILE__, __LINE__);
+ return -1;
+ }
+
+ return 0;
+}
+
+
+int
+OBJECT_IDENTIFIER_get_single_arc(uint8_t *arcbuf, unsigned int arclen, signed int add, void *rvbufp, unsigned int rvsize) {
+ unsigned LE __attribute__ ((unused)) = 1; /* Little endian (x86) */
+ uint8_t *arcend = arcbuf + arclen; /* End of arc */
+ unsigned int cache = 0; /* No more than 14 significant bits */
+ unsigned char *rvbuf = (unsigned char *)rvbufp;
+ unsigned char *rvstart = rvbuf; /* Original start of the value buffer */
+ int inc; /* Return value growth direction */
+
+ rvsize *= CHAR_BIT; /* bytes to bits */
+ arclen *= 7; /* bytes to bits */
+
+ /*
+ * The arc has the number of bits
+ * cannot be represented using supplied return value type.
+ */
+ if(arclen > rvsize) {
+ if(arclen > (rvsize + CHAR_BIT)) {
+ errno = ERANGE; /* Overflow */
+ return -1;
+ } else {
+ /*
+ * Even if the number of bits in the arc representation
+ * is higher than the width of supplied * return value
+ * type, there is still possible to fit it when there
+ * are few unused high bits in the arc value
+ * representaion.
+ *
+ * Moreover, there is a possibility that the
+ * number could actually fit the arc space, given
+ * that add is negative, but we don't handle
+ * such "temporary lack of precision" situation here.
+ * May be considered as a bug.
+ */
+ uint8_t mask = (0xff << (7-(arclen - rvsize))) & 0x7f;
+ if((*arcbuf & mask)) {
+ errno = ERANGE; /* Overflow */
+ return -1;
+ }
+ /* Fool the routine computing unused bits */
+ arclen -= 7;
+ cache = *arcbuf & 0x7f;
+ arcbuf++;
+ }
+ }
+
+ /* Faster path for common size */
+ if(rvsize == (CHAR_BIT * sizeof(unsigned long))) {
+ unsigned long accum;
+ /* Gather all bits into the accumulator */
+ for(accum = cache; arcbuf < arcend; arcbuf++)
+ accum = (accum << 7) | (*arcbuf & ~0x80);
+ if(accum < (unsigned)-add) {
+ errno = ERANGE; /* Overflow */
+ return -1;
+ }
+ *(unsigned long *)rvbuf = accum + add; /* alignment OK! */
+ return 0;
+ }
+
+#ifndef WORDS_BIGENDIAN
+ if(*(unsigned char *)&LE) { /* Little endian (x86) */
+ /* "Convert" to big endian */
+ rvbuf += rvsize / CHAR_BIT - 1;
+ rvstart--;
+ inc = -1; /* Descending */
+ } else
+#endif /* !WORDS_BIGENDIAN */
+ inc = +1; /* Big endian is known [at compile time] */
+
+ {
+ int bits; /* typically no more than 3-4 bits */
+
+ /* Clear the high unused bits */
+ for(bits = rvsize - arclen;
+ bits > CHAR_BIT;
+ rvbuf += inc, bits -= CHAR_BIT)
+ *rvbuf = 0;
+
+ /* Fill the body of a value */
+ for(; arcbuf < arcend; arcbuf++) {
+ cache = (cache << 7) | (*arcbuf & 0x7f);
+ bits += 7;
+ if(bits >= CHAR_BIT) {
+ bits -= CHAR_BIT;
+ *rvbuf = (cache >> bits);
+ rvbuf += inc;
+ }
+ }
+ if(bits) {
+ *rvbuf = cache;
+ rvbuf += inc;
+ }
+ }
+
+ if(add) {
+ for(rvbuf -= inc; rvbuf != rvstart; rvbuf -= inc) {
+ int v = add + *rvbuf;
+ if(v & (-1 << CHAR_BIT)) {
+ *rvbuf = (unsigned char)(v + (1 << CHAR_BIT));
+ add = -1;
+ } else {
+ *rvbuf = v;
+ break;
+ }
+ }
+ if(rvbuf == rvstart) {
+ /* No space to carry over */
+ errno = ERANGE; /* Overflow */
+ return -1;
+ }
+ }
+
+ return 0;
+}
+
+ssize_t
+OBJECT_IDENTIFIER__dump_arc(uint8_t *arcbuf, int arclen, int add,
+ asn_app_consume_bytes_f *cb, void *app_key) {
+ char scratch[64]; /* Conservative estimate */
+ unsigned long accum; /* Bits accumulator */
+ char *p; /* Position in the scratch buffer */
+
+ if(OBJECT_IDENTIFIER_get_single_arc(arcbuf, arclen, add,
+ &accum, sizeof(accum)))
+ return -1;
+
+ if(accum) {
+ ssize_t len;
+
+ /* Fill the scratch buffer in reverse. */
+ p = scratch + sizeof(scratch);
+ for(; accum; accum /= 10)
+ *(--p) = (char)(accum % 10) + 0x30; /* Put a digit */
+
+ len = sizeof(scratch) - (p - scratch);
+ if(cb(p, len, app_key) < 0)
+ return -1;
+ return len;
+ } else {
+ *scratch = 0x30;
+ if(cb(scratch, 1, app_key) < 0)
+ return -1;
+ return 1;
+ }
+}
+
+int
+OBJECT_IDENTIFIER_print_arc(uint8_t *arcbuf, int arclen, int add,
+ asn_app_consume_bytes_f *cb, void *app_key) {
+
+ if(OBJECT_IDENTIFIER__dump_arc(arcbuf, arclen, add, cb, app_key) < 0)
+ return -1;
+
+ return 0;
+}
+
+static ssize_t
+OBJECT_IDENTIFIER__dump_body(const OBJECT_IDENTIFIER_t *st, asn_app_consume_bytes_f *cb, void *app_key) {
+ ssize_t wrote_len = 0;
+ int startn;
+ int add = 0;
+ int i;
+
+ for(i = 0, startn = 0; i < st->size; i++) {
+ uint8_t b = st->buf[i];
+ if((b & 0x80)) /* Continuation expected */
+ continue;
+
+ if(startn == 0) {
+ /*
+ * First two arcs are encoded through the backdoor.
+ */
+ if(i) {
+ add = -80;
+ if(cb("2", 1, app_key) < 0) return -1;
+ } else if(b <= 39) {
+ add = 0;
+ if(cb("0", 1, app_key) < 0) return -1;
+ } else if(b < 79) {
+ add = -40;
+ if(cb("1", 1, app_key) < 0) return -1;
+ } else {
+ add = -80;
+ if(cb("2", 1, app_key) < 0) return -1;
+ }
+ wrote_len += 1;
+ }
+
+ if(cb(".", 1, app_key) < 0) /* Separate arcs */
+ return -1;
+
+ add = OBJECT_IDENTIFIER__dump_arc(&st->buf[startn],
+ i - startn + 1, add, cb, app_key);
+ if(add < 0) return -1;
+ wrote_len += 1 + add;
+ startn = i + 1;
+ add = 0;
+ }
+
+ return wrote_len;
+}
+
+static enum xer_pbd_rval
+OBJECT_IDENTIFIER__xer_body_decode(asn_TYPE_descriptor_t *td, void *sptr, const void *chunk_buf, size_t chunk_size) {
+ OBJECT_IDENTIFIER_t *st = (OBJECT_IDENTIFIER_t *)sptr;
+ const char *chunk_end = (const char *)chunk_buf + chunk_size;
+ const char *endptr;
+ long s_arcs[10];
+ long *arcs = s_arcs;
+ int arcs_count;
+ int ret;
+
+ (void)td;
+
+ arcs_count = OBJECT_IDENTIFIER_parse_arcs(
+ (const char *)chunk_buf, chunk_size, arcs,
+ sizeof(s_arcs)/sizeof(s_arcs[0]), &endptr);
+ if(arcs_count <= 0) {
+ /* Expecting more than zero arcs */
+ return XPBD_BROKEN_ENCODING;
+ }
+ if(endptr < chunk_end) {
+ /* We have a tail of unrecognized data. Check its safety. */
+ if(!xer_is_whitespace(endptr, chunk_end - endptr))
+ return XPBD_BROKEN_ENCODING;
+ }
+
+ if((size_t)arcs_count > sizeof(s_arcs)/sizeof(s_arcs[0])) {
+ arcs = (long *)MALLOC(arcs_count * sizeof(long));
+ if(!arcs) return XPBD_SYSTEM_FAILURE;
+ ret = OBJECT_IDENTIFIER_parse_arcs(
+ (const char *)chunk_buf, chunk_size,
+ arcs, arcs_count, &endptr);
+ if(ret != arcs_count)
+ return XPBD_SYSTEM_FAILURE; /* assert?.. */
+ }
+
+ /*
+ * Convert arcs into BER representation.
+ */
+ ret = OBJECT_IDENTIFIER_set_arcs(st, arcs, sizeof(*arcs), arcs_count);
+ if(arcs != s_arcs) FREEMEM(arcs);
+
+ return ret ? XPBD_SYSTEM_FAILURE : XPBD_BODY_CONSUMED;
+}
+
+asn_dec_rval_t
+OBJECT_IDENTIFIER_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(OBJECT_IDENTIFIER_t), opt_mname,
+ buf_ptr, size, OBJECT_IDENTIFIER__xer_body_decode);
+}
+
+asn_enc_rval_t
+OBJECT_IDENTIFIER_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 OBJECT_IDENTIFIER_t *st = (const OBJECT_IDENTIFIER_t *)sptr;
+ asn_enc_rval_t er;
+
+ (void)ilevel;
+ (void)flags;
+
+ if(!st || !st->buf)
+ _ASN_ENCODE_FAILED;
+
+ er.encoded = OBJECT_IDENTIFIER__dump_body(st, cb, app_key);
+ if(er.encoded < 0) _ASN_ENCODE_FAILED;
+
+ _ASN_ENCODED_OK(er);
+}
+
+int
+OBJECT_IDENTIFIER_print(asn_TYPE_descriptor_t *td, const void *sptr,
+ int ilevel, asn_app_consume_bytes_f *cb, void *app_key) {
+ const OBJECT_IDENTIFIER_t *st = (const OBJECT_IDENTIFIER_t *)sptr;
+
+ (void)td; /* Unused argument */
+ (void)ilevel; /* Unused argument */
+
+ if(!st || !st->buf)
+ return (cb("<absent>", 8, app_key) < 0) ? -1 : 0;
+
+ /* Dump preamble */
+ if(cb("{ ", 2, app_key) < 0)
+ return -1;
+
+ if(OBJECT_IDENTIFIER__dump_body(st, cb, app_key) < 0)
+ return -1;
+
+ return (cb(" }", 2, app_key) < 0) ? -1 : 0;
+}
+
+int
+OBJECT_IDENTIFIER_get_arcs(OBJECT_IDENTIFIER_t *oid, void *arcs,
+ unsigned int arc_type_size, unsigned int arc_slots) {
+ void *arcs_end = (char *)arcs + (arc_type_size * arc_slots);
+ int num_arcs = 0;
+ int startn = 0;
+ int add = 0;
+ int i;
+
+ if(!oid || !oid->buf || (arc_slots && arc_type_size <= 1)) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ for(i = 0; i < oid->size; i++) {
+ uint8_t b = oid->buf[i];
+ if((b & 0x80)) /* Continuation expected */
+ continue;
+
+ if(num_arcs == 0) {
+ /*
+ * First two arcs are encoded through the backdoor.
+ */
+ unsigned LE = 1; /* Little endian */
+ int first_arc;
+ num_arcs++;
+ if(!arc_slots) { num_arcs++; continue; }
+
+ if(i) first_arc = 2;
+ else if(b <= 39) first_arc = 0;
+ else if(b < 79) first_arc = 1;
+ else first_arc = 2;
+
+ add = -40 * first_arc;
+ memset(arcs, 0, arc_type_size);
+ *(unsigned char *)((char *)arcs
+ + ((*(char *)&LE)?0:(arc_type_size - 1)))
+ = first_arc;
+ arcs = ((char *)arcs) + arc_type_size;
+ }
+
+ /* Decode, if has space */
+ if(arcs < arcs_end) {
+ if(OBJECT_IDENTIFIER_get_single_arc(&oid->buf[startn],
+ i - startn + 1, add,
+ arcs, arc_type_size))
+ return -1;
+ startn = i + 1;
+ arcs = ((char *)arcs) + arc_type_size;
+ add = 0;
+ }
+ num_arcs++;
+ }
+
+ return num_arcs;
+}
+
+
+/*
+ * Save the single value as an object identifier arc.
+ */
+int
+OBJECT_IDENTIFIER_set_single_arc(uint8_t *arcbuf, const void *arcval, unsigned int arcval_size, int prepared_order) {
+ /*
+ * The following conditions must hold:
+ * assert(arcval);
+ * assert(arcval_size > 0);
+ * assert(arcval_size <= 16);
+ * assert(arcbuf);
+ */
+#ifdef WORDS_BIGENDIAN
+ const unsigned isLittleEndian = 0;
+#else
+ unsigned LE = 1;
+ unsigned isLittleEndian = *(char *)&LE;
+#endif
+ const uint8_t *tend, *tp;
+ unsigned int cache;
+ uint8_t *bp = arcbuf;
+ int bits;
+ uint8_t buffer[16];
+
+ if(isLittleEndian && !prepared_order) {
+ const uint8_t *a = (const unsigned char *)arcval + arcval_size - 1;
+ const uint8_t *aend = (const uint8_t *)arcval;
+ uint8_t *msb = buffer + arcval_size - 1;
+ uint8_t *tb;
+ for(tb = buffer; a >= aend; tb++, a--)
+ if((*tb = *a) && (tb < msb))
+ msb = tb;
+ tend = &buffer[arcval_size];
+ tp = msb; /* Most significant non-zero byte */
+ } else {
+ /* Look for most significant non-zero byte */
+ tend = (const unsigned char *)arcval + arcval_size;
+ for(tp = (const uint8_t *)arcval; tp < tend - 1; tp++)
+ if(*tp) break;
+ }
+
+ /*
+ * Split the value in 7-bits chunks.
+ */
+ bits = ((tend - tp) * CHAR_BIT) % 7;
+ if(bits) {
+ cache = *tp >> (CHAR_BIT - bits);
+ if(cache) {
+ *bp++ = cache | 0x80;
+ cache = *tp++;
+ bits = CHAR_BIT - bits;
+ } else {
+ bits = -bits;
+ }
+ } else {
+ cache = 0;
+ }
+ for(; tp < tend; tp++) {
+ cache = (cache << CHAR_BIT) + *tp;
+ bits += CHAR_BIT;
+ while(bits >= 7) {
+ bits -= 7;
+ *bp++ = 0x80 | (cache >> bits);
+ }
+ }
+ if(bits) *bp++ = cache;
+ bp[-1] &= 0x7f; /* Clear the last bit */
+
+ return bp - arcbuf;
+}
+
+int
+OBJECT_IDENTIFIER_set_arcs(OBJECT_IDENTIFIER_t *oid, const void *arcs, unsigned int arc_type_size, unsigned int arc_slots) {
+ uint8_t *buf;
+ uint8_t *bp;
+ unsigned LE = 1; /* Little endian (x86) */
+ unsigned isLittleEndian = *((char *)&LE);
+ unsigned int arc0;
+ unsigned int arc1;
+ unsigned size;
+ unsigned i;
+
+ if(!oid || !arcs || arc_type_size < 1
+ || arc_type_size > 16
+ || arc_slots < 2) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ switch(arc_type_size) {
+ case sizeof(char):
+ arc0 = ((const unsigned char *)arcs)[0];
+ arc1 = ((const unsigned char *)arcs)[1];
+ break;
+ case sizeof(short):
+ arc0 = ((const unsigned short *)arcs)[0];
+ arc1 = ((const unsigned short *)arcs)[1];
+ break;
+ case sizeof(int):
+ arc0 = ((const unsigned int *)arcs)[0];
+ arc1 = ((const unsigned int *)arcs)[1];
+ break;
+ default:
+ arc1 = arc0 = 0;
+ if(isLittleEndian) { /* Little endian (x86) */
+ const unsigned char *ps, *pe;
+ /* If more significant bytes are present,
+ * make them > 255 quick */
+ for(ps = (const unsigned char *)arcs + 1, pe = ps+arc_type_size;
+ ps < pe; ps++)
+ arc0 |= *ps, arc1 |= *(ps + arc_type_size);
+ arc0 <<= CHAR_BIT, arc1 <<= CHAR_BIT;
+ arc0 = *((const unsigned char *)arcs + 0);
+ arc1 = *((const unsigned char *)arcs + arc_type_size);
+ } else {
+ const unsigned char *ps, *pe;
+ /* If more significant bytes are present,
+ * make them > 255 quick */
+ for(ps = (const unsigned char *)arcs, pe = ps+arc_type_size - 1; ps < pe; ps++)
+ arc0 |= *ps, arc1 |= *(ps + arc_type_size);
+ arc0 = *((const unsigned char *)arcs + arc_type_size - 1);
+ arc1 = *((const unsigned char *)arcs +(arc_type_size<< 1)-1);
+ }
+ }
+
+ /*
+ * The previous chapter left us with the first and the second arcs.
+ * The values are not precise (that is, they are valid only if
+ * they're less than 255), but OK for the purposes of making
+ * the sanity test below.
+ */
+ if(arc0 <= 1) {
+ if(arc1 >= 39) {
+ /* 8.19.4: At most 39 subsequent values (including 0) */
+ errno = ERANGE;
+ return -1;
+ }
+ } else if(arc0 > 2) {
+ /* 8.19.4: Only three values are allocated from the root node */
+ errno = ERANGE;
+ return -1;
+ }
+ /*
+ * After above tests it is known that the value of arc0 is completely
+ * trustworthy (0..2). However, the arc1's value is still meaningless.
+ */
+
+ /*
+ * Roughly estimate the maximum size necessary to encode these arcs.
+ * This estimation implicitly takes in account the following facts,
+ * that cancel each other:
+ * * the first two arcs are encoded in a single value.
+ * * the first value may require more space (+1 byte)
+ * * the value of the first arc which is in range (0..2)
+ */
+ size = ((arc_type_size * CHAR_BIT + 6) / 7) * arc_slots;
+ bp = buf = (uint8_t *)MALLOC(size + 1);
+ if(!buf) {
+ /* ENOMEM */
+ return -1;
+ }
+
+ /*
+ * Encode the first two arcs.
+ * These require special treatment.
+ */
+ {
+ uint8_t *tp;
+ uint8_t first_value[1 + 16]; /* of two arcs */
+ uint8_t *fv = first_value;
+
+ /*
+ * Simulate first_value = arc0 * 40 + arc1;
+ */
+ /* Copy the second (1'st) arcs[1] into the first_value */
+ *fv++ = 0;
+ arcs = ((const char *)arcs) + arc_type_size;
+ if(isLittleEndian) {
+ const uint8_t *aend = (const unsigned char *)arcs - 1;
+ const uint8_t *a1 = (const unsigned char *)arcs + arc_type_size - 1;
+ for(; a1 > aend; fv++, a1--) *fv = *a1;
+ } else {
+ const uint8_t *a1 = (const uint8_t *)arcs;
+ const uint8_t *aend = a1 + arc_type_size;
+ for(; a1 < aend; fv++, a1++) *fv = *a1;
+ }
+ /* Increase the first_value by arc0 */
+ arc0 *= 40; /* (0..80) */
+ for(tp = first_value + arc_type_size; tp >= first_value; tp--) {
+ unsigned int v = *tp;
+ v += arc0;
+ *tp = v;
+ if(v >= (1 << CHAR_BIT)) arc0 = v >> CHAR_BIT;
+ else break;
+ }
+
+ assert(tp >= first_value);
+
+ bp += OBJECT_IDENTIFIER_set_single_arc(bp, first_value,
+ fv - first_value, 1);
+ }
+
+ /*
+ * Save the rest of arcs.
+ */
+ for(arcs = ((const char *)arcs) + arc_type_size, i = 2;
+ i < arc_slots;
+ i++, arcs = ((const char *)arcs) + arc_type_size) {
+ bp += OBJECT_IDENTIFIER_set_single_arc(bp,
+ arcs, arc_type_size, 0);
+ }
+
+ assert((unsigned)(bp - buf) <= size);
+
+ /*
+ * Replace buffer.
+ */
+ oid->size = bp - buf;
+ bp = oid->buf;
+ oid->buf = buf;
+ if(bp) FREEMEM(bp);
+
+ return 0;
+}
+
+
+int
+OBJECT_IDENTIFIER_parse_arcs(const char *oid_text, ssize_t oid_txt_length,
+ long *arcs, unsigned int arcs_slots, const char **opt_oid_text_end) {
+ unsigned int arcs_count = 0;
+ const char *oid_end;
+ long value = 0;
+ enum {
+ ST_SKIPSPACE,
+ ST_WAITDIGITS, /* Next character is expected to be a digit */
+ ST_DIGITS
+ } state = ST_SKIPSPACE;
+
+ if(!oid_text || oid_txt_length < -1 || (arcs_slots && !arcs)) {
+ if(opt_oid_text_end) *opt_oid_text_end = oid_text;
+ errno = EINVAL;
+ return -1;
+ }
+
+ if(oid_txt_length == -1)
+ oid_txt_length = strlen(oid_text);
+
+ for(oid_end = oid_text + oid_txt_length; oid_text<oid_end; oid_text++) {
+ switch(*oid_text) {
+ case 0x09: case 0x0a: case 0x0d: case 0x20: /* whitespace */
+ if(state == ST_SKIPSPACE) {
+ continue;
+ } else {
+ break; /* Finish */
+ }
+ case 0x2e: /* '.' */
+ if(state != ST_DIGITS
+ || (oid_text + 1) == oid_end) {
+ state = ST_WAITDIGITS;
+ break;
+ }
+ if(arcs_count < arcs_slots)
+ arcs[arcs_count] = value;
+ arcs_count++;
+ state = ST_WAITDIGITS;
+ continue;
+ case 0x30: case 0x31: case 0x32: case 0x33: case 0x34:
+ case 0x35: case 0x36: case 0x37: case 0x38: case 0x39:
+ if(state != ST_DIGITS) {
+ state = ST_DIGITS;
+ value = 0;
+ }
+ if(1) {
+ long new_value = value * 10;
+ if(new_value / 10 != value
+ || (value = new_value + (*oid_text - 0x30)) < 0) {
+ /* Overflow */
+ state = ST_WAITDIGITS;
+ break;
+ }
+ continue;
+ }
+ default:
+ /* Unexpected symbols */
+ state = ST_WAITDIGITS;
+ break;
+ } /* switch() */
+ break;
+ } /* for() */
+
+
+ if(opt_oid_text_end) *opt_oid_text_end = oid_text;
+
+ /* Finalize last arc */
+ switch(state) {
+ case ST_WAITDIGITS:
+ errno = EINVAL;
+ return -1;
+ case ST_DIGITS:
+ if(arcs_count < arcs_slots)
+ arcs[arcs_count] = value;
+ arcs_count++;
+ /* Fall through */
+ default:
+ return arcs_count;
+ }
+}
+
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 09:56:10 +0000