--- /dev/null
+/*****************************************************************************
+# *
+# Copyright 2019 AT&T Intellectual Property *
+# *
+# Licensed under the Apache License, Version 2.0 (the "License"); *
+# you may not use this file except in compliance with the License. *
+# You may obtain a copy of the License at *
+# *
+# http://www.apache.org/licenses/LICENSE-2.0 *
+# *
+# Unless required by applicable law or agreed to in writing, software *
+# distributed under the License is distributed on an "AS IS" BASIS, *
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. *
+# See the License for the specific language governing permissions and *
+# limitations under the License. *
+# *
+******************************************************************************/
+
+/*-
+ * 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 <INTEGER.h>
+#include <OBJECT_IDENTIFIER.h>
+#include <OCTET_STRING.h>
+#include <limits.h> /* for CHAR_BIT */
+#include <errno.h>
+
+/*
+ * OBJECT IDENTIFIER basic type description.
+ */
+static const ber_tlv_tag_t asn_DEF_OBJECT_IDENTIFIER_tags[] = {
+ (ASN_TAG_CLASS_UNIVERSAL | (6 << 2))
+};
+asn_TYPE_operation_t asn_OP_OBJECT_IDENTIFIER = {
+ ASN__PRIMITIVE_TYPE_free,
+ OBJECT_IDENTIFIER_print,
+ OCTET_STRING_compare, /* Implemented in terms of a string comparison */
+ ber_decode_primitive,
+ der_encode_primitive,
+ OBJECT_IDENTIFIER_decode_xer,
+ OBJECT_IDENTIFIER_encode_xer,
+#ifdef ASN_DISABLE_OER_SUPPORT
+ 0,
+ 0,
+#else
+ OBJECT_IDENTIFIER_decode_oer,
+ OBJECT_IDENTIFIER_encode_oer,
+#endif /* ASN_DISABLE_OER_SUPPORT */
+#ifdef ASN_DISABLE_PER_SUPPORT
+ 0,
+ 0,
+ 0,
+ 0,
+#else
+ OCTET_STRING_decode_uper,
+ OCTET_STRING_encode_uper,
+ OCTET_STRING_decode_aper,
+ OCTET_STRING_encode_aper,
+#endif /* ASN_DISABLE_PER_SUPPORT */
+ OBJECT_IDENTIFIER_random_fill,
+ 0 /* Use generic outmost tag fetcher */
+};
+asn_TYPE_descriptor_t asn_DEF_OBJECT_IDENTIFIER = {
+ "OBJECT IDENTIFIER",
+ "OBJECT_IDENTIFIER",
+ &asn_OP_OBJECT_IDENTIFIER,
+ 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, 0, OBJECT_IDENTIFIER_constraint },
+ 0, 0, /* No members */
+ 0 /* No specifics */
+};
+
+int
+OBJECT_IDENTIFIER_constraint(const 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, sptr,
+ "%s: at least one numerical value "
+ "expected (%s:%d)",
+ td->name, __FILE__, __LINE__);
+ return -1;
+ }
+ } else {
+ ASN__CTFAIL(app_key, td, sptr,
+ "%s: value not given (%s:%d)",
+ td->name, __FILE__, __LINE__);
+ return -1;
+ }
+
+ return 0;
+}
+
+static ssize_t
+OBJECT_IDENTIFIER_get_first_arcs(const uint8_t *arcbuf, size_t arcbuf_len,
+ asn_oid_arc_t *arc0, asn_oid_arc_t *arc1) {
+ asn_oid_arc_t value;
+
+ ssize_t rd = OBJECT_IDENTIFIER_get_single_arc(arcbuf, arcbuf_len, &value);
+ if(rd <= 0) return rd;
+
+ if(value >= 80) {
+ *arc0 = 2;
+ *arc1 = value - 80;
+ } else if(value >= 40) {
+ *arc0 = 1;
+ *arc1 = value - 40;
+ } else {
+ *arc0 = 0;
+ *arc1 = value;
+ }
+
+ return rd;
+}
+
+ssize_t
+OBJECT_IDENTIFIER_get_single_arc(const uint8_t *arcbuf, size_t arcbuf_len,
+ asn_oid_arc_t *ret_value) {
+ const uint8_t *b = arcbuf;
+ const uint8_t *arcend = arcbuf + arcbuf_len; /* End of arc */
+
+ if(arcbuf == arcend) {
+ return 0;
+ } else {
+ asn_oid_arc_t accum;
+ asn_oid_arc_t upper_limit = (ASN_OID_ARC_MAX >> 7);
+ /* When the value reaches "upper_limit", it can take */
+ /* at most one more digit. If it exceeds "upper_limit" */
+ /* but there are more digits - it's an Overflow condition */
+ /* Gather all bits into the accumulator */
+ for(accum = 0; b < arcend; b++) {
+ accum = (accum << 7) | (*b & ~0x80);
+ if((*b & 0x80) == 0) { // no more digits
+ if(accum <= ASN_OID_ARC_MAX) {
+ *ret_value = accum;
+ return 1 + (b - arcbuf);
+ } else {
+ errno = ERANGE; /* Overflow */
+ return -1;
+ }
+ } else { // to make sure we aren't wrapping around
+ if(accum > upper_limit) {
+ errno = ERANGE; /* Overflow */
+ return -1;
+ }
+ }
+ }
+ errno = EINVAL;
+ return -1;
+ }
+
+}
+
+static ssize_t
+OBJECT_IDENTIFIER__dump_body(const OBJECT_IDENTIFIER_t *st,
+ asn_app_consume_bytes_f *cb, void *app_key) {
+ char scratch[32];
+ asn_oid_arc_t arc0, arc1;
+ size_t produced = 0;
+ size_t off = 0;
+ ssize_t rd;
+ int ret;
+
+ rd = OBJECT_IDENTIFIER_get_first_arcs(st->buf, st->size, &arc0, &arc1);
+ if(rd <= 0) {
+ return -1;
+ }
+
+ ret = snprintf(scratch, sizeof(scratch), "%"PRIu32".%"PRIu32, arc0, arc1);
+ if(ret >= (ssize_t)sizeof(scratch)) {
+ return -1;
+ }
+ produced += ret;
+ if(cb(scratch, ret, app_key) < 0)
+ return -1;
+
+ for(off = rd; ; ) {
+ asn_oid_arc_t arc;
+ rd = OBJECT_IDENTIFIER_get_single_arc(st->buf + off, st->size - off,
+ &arc);
+ if(rd < 0) {
+ return -1;
+ } else if(rd == 0) {
+ /* No more arcs. */
+ break;
+ } else {
+ off += rd;
+ assert(off <= st->size);
+ ret = snprintf(scratch, sizeof(scratch), ".%" PRIu32, arc);
+ if(ret >= (ssize_t)sizeof(scratch)) {
+ return -1;
+ }
+ produced += ret;
+ if(cb(scratch, ret, app_key) < 0) return -1;
+ }
+ }
+
+ if(off != st->size) {
+ ASN_DEBUG("Could not scan to the end of Object Identifier");
+ return -1;
+ }
+
+ return produced;
+}
+
+static enum xer_pbd_rval
+OBJECT_IDENTIFIER__xer_body_decode(const 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;
+ asn_oid_arc_t s_arcs[10];
+ asn_oid_arc_t *arcs = s_arcs;
+ ssize_t num_arcs;
+ ssize_t ret;
+
+ (void)td;
+
+ num_arcs = OBJECT_IDENTIFIER_parse_arcs(
+ (const char *)chunk_buf, chunk_size, arcs,
+ sizeof(s_arcs) / sizeof(s_arcs[0]), &endptr);
+ if(num_arcs < 0) {
+ /* Expecting more than zero arcs */
+ return XPBD_BROKEN_ENCODING;
+ } else if(num_arcs == 0) {
+ return XPBD_NOT_BODY_IGNORE;
+ }
+ assert(endptr == chunk_end);
+
+ if((size_t)num_arcs > sizeof(s_arcs)/sizeof(s_arcs[0])) {
+ arcs = (asn_oid_arc_t *)MALLOC(num_arcs * sizeof(asn_oid_arc_t));
+ if(!arcs) return XPBD_SYSTEM_FAILURE;
+ ret = OBJECT_IDENTIFIER_parse_arcs((const char *)chunk_buf, chunk_size,
+ arcs, num_arcs, &endptr);
+ if(ret != num_arcs)
+ return XPBD_SYSTEM_FAILURE; /* assert?.. */
+ }
+
+ /*
+ * Convert arcs into BER representation.
+ */
+ ret = OBJECT_IDENTIFIER_set_arcs(st, arcs, num_arcs);
+ if(arcs != s_arcs) FREEMEM(arcs);
+
+ return ret ? XPBD_SYSTEM_FAILURE : XPBD_BODY_CONSUMED;
+}
+
+asn_dec_rval_t
+OBJECT_IDENTIFIER_decode_xer(const asn_codec_ctx_t *opt_codec_ctx,
+ const 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(const asn_TYPE_descriptor_t *td, const 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 = {0,0,0};
+
+ (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(const 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;
+}
+
+ssize_t
+OBJECT_IDENTIFIER_get_arcs(const OBJECT_IDENTIFIER_t *st, asn_oid_arc_t *arcs,
+ size_t arc_slots) {
+ asn_oid_arc_t arc0, arc1;
+ size_t num_arcs = 0;
+ size_t off;
+ ssize_t rd;
+
+ if(!st || !st->buf) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ rd = OBJECT_IDENTIFIER_get_first_arcs(st->buf, st->size, &arc0, &arc1);
+ if(rd <= 0) {
+ return -1;
+ }
+ num_arcs = 2;
+ switch(arc_slots) {
+ default:
+ case 2:
+ arcs[1] = arc1;
+ /* Fall through */
+ case 1:
+ arcs[0] = arc0;
+ /* Fall through */
+ case 0:
+ break;
+ }
+
+ for(off = rd; ; ) {
+ asn_oid_arc_t arc;
+ rd = OBJECT_IDENTIFIER_get_single_arc(st->buf + off, st->size - off,
+ &arc);
+ if(rd < 0) {
+ return -1;
+ } else if(rd == 0) {
+ /* No more arcs. */
+ break;
+ } else {
+ off += rd;
+ if(num_arcs < arc_slots) {
+ arcs[num_arcs] = arc;
+ }
+ num_arcs++;
+ }
+ }
+
+ if(off != st->size) {
+ return -1;
+ }
+
+ return num_arcs;
+}
+
+
+/*
+ * Save the single value as an object identifier arc.
+ */
+ssize_t
+OBJECT_IDENTIFIER_set_single_arc(uint8_t *arcbuf, size_t arcbuf_len,
+ asn_oid_arc_t value) {
+ /*
+ * The following conditions must hold:
+ * assert(arcbuf);
+ */
+ uint8_t scratch[((sizeof(value) * CHAR_BIT + 6) / 7)];
+ uint8_t *scratch_end = &scratch[sizeof(scratch)-1];
+ uint8_t *b;
+ size_t result_len;
+ uint8_t mask;
+
+ for(b = scratch_end, mask = 0; ; mask = 0x80, b--) {
+ *b = mask | (value & 0x7f);
+ value >>= 7;
+ if(!value) {
+ break;
+ }
+ }
+
+ result_len = (scratch_end - b) + 1;
+
+ if(result_len > arcbuf_len) {
+ return -1;
+ }
+
+ memcpy(arcbuf, b, result_len);
+
+ return result_len;
+}
+
+int
+OBJECT_IDENTIFIER_set_arcs(OBJECT_IDENTIFIER_t *st, const asn_oid_arc_t *arcs,
+ size_t arc_slots) {
+ uint8_t *buf;
+ uint8_t *bp;
+ ssize_t wrote;
+ asn_oid_arc_t arc0;
+ asn_oid_arc_t arc1;
+ size_t size;
+ size_t i;
+
+ if(!st || !arcs || arc_slots < 2) {
+ errno = EINVAL;
+ return -1;
+ }
+
+ arc0 = arcs[0];
+ arc1 = arcs[1];
+
+ if(arc0 <= 1) {
+ if(arc1 >= 40) {
+ /* 8.19.4: At most 39 subsequent values (including 0) */
+ errno = ERANGE;
+ return -1;
+ }
+ } else if(arc0 == 2) {
+ if(arc1 > ASN_OID_ARC_MAX - 80) {
+ 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 = ((sizeof(asn_oid_arc_t) * CHAR_BIT + 6) / 7) * arc_slots;
+ bp = buf = (uint8_t *)MALLOC(size + 1);
+ if(!buf) {
+ /* ENOMEM */
+ return -1;
+ }
+
+ wrote = OBJECT_IDENTIFIER_set_single_arc(bp, size, arc0 * 40 + arc1);
+ if(wrote <= 0) {
+ FREEMEM(buf);
+ return -1;
+ }
+ assert((size_t)wrote <= size);
+ bp += wrote;
+ size -= wrote;
+
+ for(i = 2; i < arc_slots; i++) {
+ wrote = OBJECT_IDENTIFIER_set_single_arc(bp, size, arcs[i]);
+ if(wrote <= 0) {
+ FREEMEM(buf);
+ return -1;
+ }
+ assert((size_t)wrote <= size);
+ bp += wrote;
+ size -= wrote;
+ }
+
+ /*
+ * Replace buffer.
+ */
+ st->size = bp - buf;
+ bp = st->buf;
+ st->buf = buf;
+ st->buf[st->size] = '\0';
+ if(bp) FREEMEM(bp);
+
+ return 0;
+}
+
+ssize_t
+OBJECT_IDENTIFIER_parse_arcs(const char *oid_text, ssize_t oid_txt_length,
+ asn_oid_arc_t *arcs, size_t arcs_count,
+ const char **opt_oid_text_end) {
+ size_t num_arcs = 0;
+ const char *oid_end;
+ enum {
+ ST_LEADSPACE,
+ ST_TAILSPACE,
+ ST_AFTERVALUE, /* Next character ought to be '.' or a space */
+ ST_WAITDIGITS /* Next character is expected to be a digit */
+ } state = ST_LEADSPACE;
+
+ if(!oid_text || oid_txt_length < -1 || (arcs_count && !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);
+
+#define _OID_CAPTURE_ARC(oid_text, oid_end) \
+ do { \
+ const char *endp = oid_end; \
+ unsigned long value; \
+ switch(asn_strtoul_lim(oid_text, &endp, &value)) { \
+ case ASN_STRTOX_EXTRA_DATA: \
+ case ASN_STRTOX_OK: \
+ if(value <= ASN_OID_ARC_MAX) { \
+ if(num_arcs < arcs_count) arcs[num_arcs] = value; \
+ num_arcs++; \
+ oid_text = endp - 1; \
+ break; \
+ } \
+ /* Fall through */ \
+ case ASN_STRTOX_ERROR_RANGE: \
+ if(opt_oid_text_end) *opt_oid_text_end = oid_text; \
+ errno = ERANGE; \
+ return -1; \
+ case ASN_STRTOX_ERROR_INVAL: \
+ case ASN_STRTOX_EXPECT_MORE: \
+ if(opt_oid_text_end) *opt_oid_text_end = oid_text; \
+ errno = EINVAL; \
+ return -1; \
+ } \
+ } while(0)
+
+ 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 */
+ switch(state) {
+ case ST_LEADSPACE:
+ case ST_TAILSPACE:
+ continue;
+ case ST_AFTERVALUE:
+ state = ST_TAILSPACE;
+ continue;
+ case ST_WAITDIGITS:
+ break; /* Digits expected after ".", got whitespace */
+ }
+ break;
+ case 0x2e: /* '.' */
+ switch(state) {
+ case ST_LEADSPACE:
+ case ST_TAILSPACE:
+ case ST_WAITDIGITS:
+ if(opt_oid_text_end)
+ *opt_oid_text_end = oid_text;
+ errno = EINVAL; /* Broken OID */
+ return -1;
+ break;
+ case ST_AFTERVALUE:
+ 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_TAILSPACE:
+ case ST_AFTERVALUE:
+ if(opt_oid_text_end)
+ *opt_oid_text_end = oid_text;
+ errno = EINVAL; /* "1. 1" => broken OID */
+ return -1;
+ case ST_LEADSPACE:
+ case ST_WAITDIGITS:
+ _OID_CAPTURE_ARC(oid_text, oid_end);
+ state = ST_AFTERVALUE;
+ continue;
+ }
+ break;
+ 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_LEADSPACE:
+ return 0; /* No OID found in input data */
+ case ST_WAITDIGITS:
+ errno = EINVAL; /* Broken OID */
+ return -1;
+ case ST_AFTERVALUE:
+ case ST_TAILSPACE:
+ return num_arcs;
+ }
+
+ errno = EINVAL; /* Broken OID */
+ return -1;
+}
+
+/*
+ * Generate values from the list of interesting values, or just a random
+ * value up to the upper limit.
+ */
+static asn_oid_arc_t
+OBJECT_IDENTIFIER__biased_random_arc(asn_oid_arc_t upper_bound) {
+ const asn_oid_arc_t values[] = {0, 1, 127, 128, 129, 254, 255, 256};
+ size_t idx;
+
+ switch(asn_random_between(0, 2)) {
+ case 0:
+ idx = asn_random_between(0, sizeof(values) / sizeof(values[0]) - 1);
+ if(values[idx] < upper_bound) {
+ return values[idx];
+ }
+ /* Fall through */
+ case 1:
+ return asn_random_between(0, upper_bound);
+ case 2:
+ default:
+ return upper_bound;
+ }
+}
+
+asn_random_fill_result_t
+OBJECT_IDENTIFIER_random_fill(const asn_TYPE_descriptor_t *td, void **sptr,
+ const asn_encoding_constraints_t *constraints,
+ size_t max_length) {
+ asn_random_fill_result_t result_ok = {ARFILL_OK, 1};
+ asn_random_fill_result_t result_failed = {ARFILL_FAILED, 0};
+ asn_random_fill_result_t result_skipped = {ARFILL_SKIPPED, 0};
+ OBJECT_IDENTIFIER_t *st;
+ asn_oid_arc_t arcs[5];
+ size_t arcs_len = asn_random_between(2, 5);
+ size_t i;
+
+ (void)constraints;
+
+ if(max_length < arcs_len) return result_skipped;
+
+ if(*sptr) {
+ st = *sptr;
+ } else {
+ st = CALLOC(1, sizeof(*st));
+ }
+
+ arcs[0] = asn_random_between(0, 2);
+ arcs[1] = OBJECT_IDENTIFIER__biased_random_arc(
+ arcs[0] <= 1 ? 39 : (ASN_OID_ARC_MAX - 80));
+ for(i = 2; i < arcs_len; i++) {
+ arcs[i] = OBJECT_IDENTIFIER__biased_random_arc(ASN_OID_ARC_MAX);
+ }
+
+ if(OBJECT_IDENTIFIER_set_arcs(st, arcs, arcs_len)) {
+ if(st != *sptr) {
+ ASN_STRUCT_FREE(*td, st);
+ }
+ return result_failed;
+ }
+
+ *sptr = st;
+
+ result_ok.length = st->size;
+ return result_ok;
+}
Code Review / sim / e2-interface.git / blobdiff