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- /* ed25519_cert.c -- generated by Trunnel v1.4.4.
- * https://gitweb.torproject.org/trunnel.git
- * You probably shouldn't edit this file.
- */
- #include <stdlib.h>
- #include "trunnel-impl.h"
- #include "ed25519_cert.h"
- #define TRUNNEL_SET_ERROR_CODE(obj) \
- do { \
- (obj)->trunnel_error_code_ = 1; \
- } while (0)
- #if defined(__COVERITY__) || defined(__clang_analyzer__)
- /* If we're runnning a static analysis tool, we don't want it to complain
- * that some of our remaining-bytes checks are dead-code. */
- int edcert_deadcode_dummy__ = 0;
- #define OR_DEADCODE_DUMMY || edcert_deadcode_dummy__
- #else
- #define OR_DEADCODE_DUMMY
- #endif
- #define CHECK_REMAINING(nbytes, label) \
- do { \
- if (remaining < (nbytes) OR_DEADCODE_DUMMY) { \
- goto label; \
- } \
- } while (0)
- ed25519_cert_extension_t *
- ed25519_cert_extension_new(void)
- {
- ed25519_cert_extension_t *val = trunnel_calloc(1, sizeof(ed25519_cert_extension_t));
- if (NULL == val)
- return NULL;
- return val;
- }
- /** Release all storage held inside 'obj', but do not free 'obj'.
- */
- static void
- ed25519_cert_extension_clear(ed25519_cert_extension_t *obj)
- {
- (void) obj;
- TRUNNEL_DYNARRAY_WIPE(&obj->un_unparsed);
- TRUNNEL_DYNARRAY_CLEAR(&obj->un_unparsed);
- }
- void
- ed25519_cert_extension_free(ed25519_cert_extension_t *obj)
- {
- if (obj == NULL)
- return;
- ed25519_cert_extension_clear(obj);
- trunnel_memwipe(obj, sizeof(ed25519_cert_extension_t));
- trunnel_free_(obj);
- }
- uint16_t
- ed25519_cert_extension_get_ext_length(ed25519_cert_extension_t *inp)
- {
- return inp->ext_length;
- }
- int
- ed25519_cert_extension_set_ext_length(ed25519_cert_extension_t *inp, uint16_t val)
- {
- inp->ext_length = val;
- return 0;
- }
- uint8_t
- ed25519_cert_extension_get_ext_type(ed25519_cert_extension_t *inp)
- {
- return inp->ext_type;
- }
- int
- ed25519_cert_extension_set_ext_type(ed25519_cert_extension_t *inp, uint8_t val)
- {
- inp->ext_type = val;
- return 0;
- }
- uint8_t
- ed25519_cert_extension_get_ext_flags(ed25519_cert_extension_t *inp)
- {
- return inp->ext_flags;
- }
- int
- ed25519_cert_extension_set_ext_flags(ed25519_cert_extension_t *inp, uint8_t val)
- {
- inp->ext_flags = val;
- return 0;
- }
- size_t
- ed25519_cert_extension_getlen_un_signing_key(const ed25519_cert_extension_t *inp)
- {
- (void)inp; return 32;
- }
- uint8_t
- ed25519_cert_extension_get_un_signing_key(const ed25519_cert_extension_t *inp, size_t idx)
- {
- trunnel_assert(idx < 32);
- return inp->un_signing_key[idx];
- }
- int
- ed25519_cert_extension_set_un_signing_key(ed25519_cert_extension_t *inp, size_t idx, uint8_t elt)
- {
- trunnel_assert(idx < 32);
- inp->un_signing_key[idx] = elt;
- return 0;
- }
- uint8_t *
- ed25519_cert_extension_getarray_un_signing_key(ed25519_cert_extension_t *inp)
- {
- return inp->un_signing_key;
- }
- size_t
- ed25519_cert_extension_getlen_un_unparsed(const ed25519_cert_extension_t *inp)
- {
- return TRUNNEL_DYNARRAY_LEN(&inp->un_unparsed);
- }
- uint8_t
- ed25519_cert_extension_get_un_unparsed(ed25519_cert_extension_t *inp, size_t idx)
- {
- return TRUNNEL_DYNARRAY_GET(&inp->un_unparsed, idx);
- }
- int
- ed25519_cert_extension_set_un_unparsed(ed25519_cert_extension_t *inp, size_t idx, uint8_t elt)
- {
- TRUNNEL_DYNARRAY_SET(&inp->un_unparsed, idx, elt);
- return 0;
- }
- int
- ed25519_cert_extension_add_un_unparsed(ed25519_cert_extension_t *inp, uint8_t elt)
- {
- TRUNNEL_DYNARRAY_ADD(uint8_t, &inp->un_unparsed, elt, {});
- return 0;
- trunnel_alloc_failed:
- TRUNNEL_SET_ERROR_CODE(inp);
- return -1;
- }
- uint8_t *
- ed25519_cert_extension_getarray_un_unparsed(ed25519_cert_extension_t *inp)
- {
- return inp->un_unparsed.elts_;
- }
- int
- ed25519_cert_extension_setlen_un_unparsed(ed25519_cert_extension_t *inp, size_t newlen)
- {
- uint8_t *newptr;
- newptr = trunnel_dynarray_setlen(&inp->un_unparsed.allocated_,
- &inp->un_unparsed.n_, inp->un_unparsed.elts_, newlen,
- sizeof(inp->un_unparsed.elts_[0]), (trunnel_free_fn_t) NULL,
- &inp->trunnel_error_code_);
- if (newptr == NULL)
- goto trunnel_alloc_failed;
- inp->un_unparsed.elts_ = newptr;
- return 0;
- trunnel_alloc_failed:
- TRUNNEL_SET_ERROR_CODE(inp);
- return -1;
- }
- const char *
- ed25519_cert_extension_check(const ed25519_cert_extension_t *obj)
- {
- if (obj == NULL)
- return "Object was NULL";
- if (obj->trunnel_error_code_)
- return "A set function failed on this object";
- switch (obj->ext_type) {
- case CERTEXT_SIGNED_WITH_KEY:
- break;
- default:
- break;
- }
- return NULL;
- }
- ssize_t
- ed25519_cert_extension_encoded_len(const ed25519_cert_extension_t *obj)
- {
- ssize_t result = 0;
- if (NULL != ed25519_cert_extension_check(obj))
- return -1;
- /* Length of u16 ext_length */
- result += 2;
- /* Length of u8 ext_type */
- result += 1;
- /* Length of u8 ext_flags */
- result += 1;
- switch (obj->ext_type) {
- case CERTEXT_SIGNED_WITH_KEY:
- /* Length of u8 un_signing_key[32] */
- result += 32;
- break;
- default:
- /* Length of u8 un_unparsed[] */
- result += TRUNNEL_DYNARRAY_LEN(&obj->un_unparsed);
- break;
- }
- return result;
- }
- int
- ed25519_cert_extension_clear_errors(ed25519_cert_extension_t *obj)
- {
- int r = obj->trunnel_error_code_;
- obj->trunnel_error_code_ = 0;
- return r;
- }
- ssize_t
- ed25519_cert_extension_encode(uint8_t *output, const size_t avail, const ed25519_cert_extension_t *obj)
- {
- ssize_t result = 0;
- size_t written = 0;
- uint8_t *ptr = output;
- const char *msg;
- #ifdef TRUNNEL_CHECK_ENCODED_LEN
- const ssize_t encoded_len = ed25519_cert_extension_encoded_len(obj);
- #endif
- uint8_t *backptr_ext_length = NULL;
- if (NULL != (msg = ed25519_cert_extension_check(obj)))
- goto check_failed;
- #ifdef TRUNNEL_CHECK_ENCODED_LEN
- trunnel_assert(encoded_len >= 0);
- #endif
- /* Encode u16 ext_length */
- backptr_ext_length = ptr;
- trunnel_assert(written <= avail);
- if (avail - written < 2)
- goto truncated;
- trunnel_set_uint16(ptr, trunnel_htons(obj->ext_length));
- written += 2; ptr += 2;
- /* Encode u8 ext_type */
- trunnel_assert(written <= avail);
- if (avail - written < 1)
- goto truncated;
- trunnel_set_uint8(ptr, (obj->ext_type));
- written += 1; ptr += 1;
- /* Encode u8 ext_flags */
- trunnel_assert(written <= avail);
- if (avail - written < 1)
- goto truncated;
- trunnel_set_uint8(ptr, (obj->ext_flags));
- written += 1; ptr += 1;
- {
- size_t written_before_union = written;
- /* Encode union un[ext_type] */
- trunnel_assert(written <= avail);
- switch (obj->ext_type) {
- case CERTEXT_SIGNED_WITH_KEY:
- /* Encode u8 un_signing_key[32] */
- trunnel_assert(written <= avail);
- if (avail - written < 32)
- goto truncated;
- memcpy(ptr, obj->un_signing_key, 32);
- written += 32; ptr += 32;
- break;
- default:
- /* Encode u8 un_unparsed[] */
- {
- size_t elt_len = TRUNNEL_DYNARRAY_LEN(&obj->un_unparsed);
- trunnel_assert(written <= avail);
- if (avail - written < elt_len)
- goto truncated;
- if (elt_len)
- memcpy(ptr, obj->un_unparsed.elts_, elt_len);
- written += elt_len; ptr += elt_len;
- }
- break;
- }
- /* Write the length field back to ext_length */
- trunnel_assert(written >= written_before_union);
- #if UINT16_MAX < SIZE_MAX
- if (written - written_before_union > UINT16_MAX)
- goto check_failed;
- #endif
- trunnel_set_uint16(backptr_ext_length, trunnel_htons(written - written_before_union));
- }
- trunnel_assert(ptr == output + written);
- #ifdef TRUNNEL_CHECK_ENCODED_LEN
- {
- trunnel_assert(encoded_len >= 0);
- trunnel_assert((size_t)encoded_len == written);
- }
- #endif
- return written;
- truncated:
- result = -2;
- goto fail;
- check_failed:
- (void)msg;
- result = -1;
- goto fail;
- fail:
- trunnel_assert(result < 0);
- return result;
- }
- /** As ed25519_cert_extension_parse(), but do not allocate the output
- * object.
- */
- static ssize_t
- ed25519_cert_extension_parse_into(ed25519_cert_extension_t *obj, const uint8_t *input, const size_t len_in)
- {
- const uint8_t *ptr = input;
- size_t remaining = len_in;
- ssize_t result = 0;
- (void)result;
- /* Parse u16 ext_length */
- CHECK_REMAINING(2, truncated);
- obj->ext_length = trunnel_ntohs(trunnel_get_uint16(ptr));
- remaining -= 2; ptr += 2;
- /* Parse u8 ext_type */
- CHECK_REMAINING(1, truncated);
- obj->ext_type = (trunnel_get_uint8(ptr));
- remaining -= 1; ptr += 1;
- /* Parse u8 ext_flags */
- CHECK_REMAINING(1, truncated);
- obj->ext_flags = (trunnel_get_uint8(ptr));
- remaining -= 1; ptr += 1;
- {
- size_t remaining_after;
- CHECK_REMAINING(obj->ext_length, truncated);
- remaining_after = remaining - obj->ext_length;
- remaining = obj->ext_length;
- /* Parse union un[ext_type] */
- switch (obj->ext_type) {
- case CERTEXT_SIGNED_WITH_KEY:
- /* Parse u8 un_signing_key[32] */
- CHECK_REMAINING(32, fail);
- memcpy(obj->un_signing_key, ptr, 32);
- remaining -= 32; ptr += 32;
- break;
- default:
- /* Parse u8 un_unparsed[] */
- TRUNNEL_DYNARRAY_EXPAND(uint8_t, &obj->un_unparsed, remaining, {});
- obj->un_unparsed.n_ = remaining;
- if (remaining)
- memcpy(obj->un_unparsed.elts_, ptr, remaining);
- ptr += remaining; remaining -= remaining;
- break;
- }
- if (remaining != 0)
- goto fail;
- remaining = remaining_after;
- }
- trunnel_assert(ptr + remaining == input + len_in);
- return len_in - remaining;
- truncated:
- return -2;
- trunnel_alloc_failed:
- return -1;
- fail:
- result = -1;
- return result;
- }
- ssize_t
- ed25519_cert_extension_parse(ed25519_cert_extension_t **output, const uint8_t *input, const size_t len_in)
- {
- ssize_t result;
- *output = ed25519_cert_extension_new();
- if (NULL == *output)
- return -1;
- result = ed25519_cert_extension_parse_into(*output, input, len_in);
- if (result < 0) {
- ed25519_cert_extension_free(*output);
- *output = NULL;
- }
- return result;
- }
- link_specifier_t *
- link_specifier_new(void)
- {
- link_specifier_t *val = trunnel_calloc(1, sizeof(link_specifier_t));
- if (NULL == val)
- return NULL;
- return val;
- }
- /** Release all storage held inside 'obj', but do not free 'obj'.
- */
- static void
- link_specifier_clear(link_specifier_t *obj)
- {
- (void) obj;
- TRUNNEL_DYNARRAY_WIPE(&obj->un_unrecognized);
- TRUNNEL_DYNARRAY_CLEAR(&obj->un_unrecognized);
- }
- void
- link_specifier_free(link_specifier_t *obj)
- {
- if (obj == NULL)
- return;
- link_specifier_clear(obj);
- trunnel_memwipe(obj, sizeof(link_specifier_t));
- trunnel_free_(obj);
- }
- uint8_t
- link_specifier_get_ls_type(link_specifier_t *inp)
- {
- return inp->ls_type;
- }
- int
- link_specifier_set_ls_type(link_specifier_t *inp, uint8_t val)
- {
- inp->ls_type = val;
- return 0;
- }
- uint8_t
- link_specifier_get_ls_len(link_specifier_t *inp)
- {
- return inp->ls_len;
- }
- int
- link_specifier_set_ls_len(link_specifier_t *inp, uint8_t val)
- {
- inp->ls_len = val;
- return 0;
- }
- uint32_t
- link_specifier_get_un_ipv4_addr(link_specifier_t *inp)
- {
- return inp->un_ipv4_addr;
- }
- int
- link_specifier_set_un_ipv4_addr(link_specifier_t *inp, uint32_t val)
- {
- inp->un_ipv4_addr = val;
- return 0;
- }
- uint16_t
- link_specifier_get_un_ipv4_port(link_specifier_t *inp)
- {
- return inp->un_ipv4_port;
- }
- int
- link_specifier_set_un_ipv4_port(link_specifier_t *inp, uint16_t val)
- {
- inp->un_ipv4_port = val;
- return 0;
- }
- size_t
- link_specifier_getlen_un_ipv6_addr(const link_specifier_t *inp)
- {
- (void)inp; return 16;
- }
- uint8_t
- link_specifier_get_un_ipv6_addr(const link_specifier_t *inp, size_t idx)
- {
- trunnel_assert(idx < 16);
- return inp->un_ipv6_addr[idx];
- }
- int
- link_specifier_set_un_ipv6_addr(link_specifier_t *inp, size_t idx, uint8_t elt)
- {
- trunnel_assert(idx < 16);
- inp->un_ipv6_addr[idx] = elt;
- return 0;
- }
- uint8_t *
- link_specifier_getarray_un_ipv6_addr(link_specifier_t *inp)
- {
- return inp->un_ipv6_addr;
- }
- uint16_t
- link_specifier_get_un_ipv6_port(link_specifier_t *inp)
- {
- return inp->un_ipv6_port;
- }
- int
- link_specifier_set_un_ipv6_port(link_specifier_t *inp, uint16_t val)
- {
- inp->un_ipv6_port = val;
- return 0;
- }
- size_t
- link_specifier_getlen_un_legacy_id(const link_specifier_t *inp)
- {
- (void)inp; return 20;
- }
- uint8_t
- link_specifier_get_un_legacy_id(const link_specifier_t *inp, size_t idx)
- {
- trunnel_assert(idx < 20);
- return inp->un_legacy_id[idx];
- }
- int
- link_specifier_set_un_legacy_id(link_specifier_t *inp, size_t idx, uint8_t elt)
- {
- trunnel_assert(idx < 20);
- inp->un_legacy_id[idx] = elt;
- return 0;
- }
- uint8_t *
- link_specifier_getarray_un_legacy_id(link_specifier_t *inp)
- {
- return inp->un_legacy_id;
- }
- size_t
- link_specifier_getlen_un_ed25519_id(const link_specifier_t *inp)
- {
- (void)inp; return 32;
- }
- uint8_t
- link_specifier_get_un_ed25519_id(const link_specifier_t *inp, size_t idx)
- {
- trunnel_assert(idx < 32);
- return inp->un_ed25519_id[idx];
- }
- int
- link_specifier_set_un_ed25519_id(link_specifier_t *inp, size_t idx, uint8_t elt)
- {
- trunnel_assert(idx < 32);
- inp->un_ed25519_id[idx] = elt;
- return 0;
- }
- uint8_t *
- link_specifier_getarray_un_ed25519_id(link_specifier_t *inp)
- {
- return inp->un_ed25519_id;
- }
- size_t
- link_specifier_getlen_un_unrecognized(const link_specifier_t *inp)
- {
- return TRUNNEL_DYNARRAY_LEN(&inp->un_unrecognized);
- }
- uint8_t
- link_specifier_get_un_unrecognized(link_specifier_t *inp, size_t idx)
- {
- return TRUNNEL_DYNARRAY_GET(&inp->un_unrecognized, idx);
- }
- int
- link_specifier_set_un_unrecognized(link_specifier_t *inp, size_t idx, uint8_t elt)
- {
- TRUNNEL_DYNARRAY_SET(&inp->un_unrecognized, idx, elt);
- return 0;
- }
- int
- link_specifier_add_un_unrecognized(link_specifier_t *inp, uint8_t elt)
- {
- TRUNNEL_DYNARRAY_ADD(uint8_t, &inp->un_unrecognized, elt, {});
- return 0;
- trunnel_alloc_failed:
- TRUNNEL_SET_ERROR_CODE(inp);
- return -1;
- }
- uint8_t *
- link_specifier_getarray_un_unrecognized(link_specifier_t *inp)
- {
- return inp->un_unrecognized.elts_;
- }
- int
- link_specifier_setlen_un_unrecognized(link_specifier_t *inp, size_t newlen)
- {
- uint8_t *newptr;
- newptr = trunnel_dynarray_setlen(&inp->un_unrecognized.allocated_,
- &inp->un_unrecognized.n_, inp->un_unrecognized.elts_, newlen,
- sizeof(inp->un_unrecognized.elts_[0]), (trunnel_free_fn_t) NULL,
- &inp->trunnel_error_code_);
- if (newptr == NULL)
- goto trunnel_alloc_failed;
- inp->un_unrecognized.elts_ = newptr;
- return 0;
- trunnel_alloc_failed:
- TRUNNEL_SET_ERROR_CODE(inp);
- return -1;
- }
- const char *
- link_specifier_check(const link_specifier_t *obj)
- {
- if (obj == NULL)
- return "Object was NULL";
- if (obj->trunnel_error_code_)
- return "A set function failed on this object";
- switch (obj->ls_type) {
- case LS_IPV4:
- break;
- case LS_IPV6:
- break;
- case LS_LEGACY_ID:
- break;
- case LS_ED25519_ID:
- break;
- default:
- break;
- }
- return NULL;
- }
- ssize_t
- link_specifier_encoded_len(const link_specifier_t *obj)
- {
- ssize_t result = 0;
- if (NULL != link_specifier_check(obj))
- return -1;
- /* Length of u8 ls_type */
- result += 1;
- /* Length of u8 ls_len */
- result += 1;
- switch (obj->ls_type) {
- case LS_IPV4:
- /* Length of u32 un_ipv4_addr */
- result += 4;
- /* Length of u16 un_ipv4_port */
- result += 2;
- break;
- case LS_IPV6:
- /* Length of u8 un_ipv6_addr[16] */
- result += 16;
- /* Length of u16 un_ipv6_port */
- result += 2;
- break;
- case LS_LEGACY_ID:
- /* Length of u8 un_legacy_id[20] */
- result += 20;
- break;
- case LS_ED25519_ID:
- /* Length of u8 un_ed25519_id[32] */
- result += 32;
- break;
- default:
- /* Length of u8 un_unrecognized[] */
- result += TRUNNEL_DYNARRAY_LEN(&obj->un_unrecognized);
- break;
- }
- return result;
- }
- int
- link_specifier_clear_errors(link_specifier_t *obj)
- {
- int r = obj->trunnel_error_code_;
- obj->trunnel_error_code_ = 0;
- return r;
- }
- ssize_t
- link_specifier_encode(uint8_t *output, const size_t avail, const link_specifier_t *obj)
- {
- ssize_t result = 0;
- size_t written = 0;
- uint8_t *ptr = output;
- const char *msg;
- #ifdef TRUNNEL_CHECK_ENCODED_LEN
- const ssize_t encoded_len = link_specifier_encoded_len(obj);
- #endif
- uint8_t *backptr_ls_len = NULL;
- if (NULL != (msg = link_specifier_check(obj)))
- goto check_failed;
- #ifdef TRUNNEL_CHECK_ENCODED_LEN
- trunnel_assert(encoded_len >= 0);
- #endif
- /* Encode u8 ls_type */
- trunnel_assert(written <= avail);
- if (avail - written < 1)
- goto truncated;
- trunnel_set_uint8(ptr, (obj->ls_type));
- written += 1; ptr += 1;
- /* Encode u8 ls_len */
- backptr_ls_len = ptr;
- trunnel_assert(written <= avail);
- if (avail - written < 1)
- goto truncated;
- trunnel_set_uint8(ptr, (obj->ls_len));
- written += 1; ptr += 1;
- {
- size_t written_before_union = written;
- /* Encode union un[ls_type] */
- trunnel_assert(written <= avail);
- switch (obj->ls_type) {
- case LS_IPV4:
- /* Encode u32 un_ipv4_addr */
- trunnel_assert(written <= avail);
- if (avail - written < 4)
- goto truncated;
- trunnel_set_uint32(ptr, trunnel_htonl(obj->un_ipv4_addr));
- written += 4; ptr += 4;
- /* Encode u16 un_ipv4_port */
- trunnel_assert(written <= avail);
- if (avail - written < 2)
- goto truncated;
- trunnel_set_uint16(ptr, trunnel_htons(obj->un_ipv4_port));
- written += 2; ptr += 2;
- break;
- case LS_IPV6:
- /* Encode u8 un_ipv6_addr[16] */
- trunnel_assert(written <= avail);
- if (avail - written < 16)
- goto truncated;
- memcpy(ptr, obj->un_ipv6_addr, 16);
- written += 16; ptr += 16;
- /* Encode u16 un_ipv6_port */
- trunnel_assert(written <= avail);
- if (avail - written < 2)
- goto truncated;
- trunnel_set_uint16(ptr, trunnel_htons(obj->un_ipv6_port));
- written += 2; ptr += 2;
- break;
- case LS_LEGACY_ID:
- /* Encode u8 un_legacy_id[20] */
- trunnel_assert(written <= avail);
- if (avail - written < 20)
- goto truncated;
- memcpy(ptr, obj->un_legacy_id, 20);
- written += 20; ptr += 20;
- break;
- case LS_ED25519_ID:
- /* Encode u8 un_ed25519_id[32] */
- trunnel_assert(written <= avail);
- if (avail - written < 32)
- goto truncated;
- memcpy(ptr, obj->un_ed25519_id, 32);
- written += 32; ptr += 32;
- break;
- default:
- /* Encode u8 un_unrecognized[] */
- {
- size_t elt_len = TRUNNEL_DYNARRAY_LEN(&obj->un_unrecognized);
- trunnel_assert(written <= avail);
- if (avail - written < elt_len)
- goto truncated;
- if (elt_len)
- memcpy(ptr, obj->un_unrecognized.elts_, elt_len);
- written += elt_len; ptr += elt_len;
- }
- break;
- }
- /* Write the length field back to ls_len */
- trunnel_assert(written >= written_before_union);
- #if UINT8_MAX < SIZE_MAX
- if (written - written_before_union > UINT8_MAX)
- goto check_failed;
- #endif
- trunnel_set_uint8(backptr_ls_len, (written - written_before_union));
- }
- trunnel_assert(ptr == output + written);
- #ifdef TRUNNEL_CHECK_ENCODED_LEN
- {
- trunnel_assert(encoded_len >= 0);
- trunnel_assert((size_t)encoded_len == written);
- }
- #endif
- return written;
- truncated:
- result = -2;
- goto fail;
- check_failed:
- (void)msg;
- result = -1;
- goto fail;
- fail:
- trunnel_assert(result < 0);
- return result;
- }
- /** As link_specifier_parse(), but do not allocate the output object.
- */
- static ssize_t
- link_specifier_parse_into(link_specifier_t *obj, const uint8_t *input, const size_t len_in)
- {
- const uint8_t *ptr = input;
- size_t remaining = len_in;
- ssize_t result = 0;
- (void)result;
- /* Parse u8 ls_type */
- CHECK_REMAINING(1, truncated);
- obj->ls_type = (trunnel_get_uint8(ptr));
- remaining -= 1; ptr += 1;
- /* Parse u8 ls_len */
- CHECK_REMAINING(1, truncated);
- obj->ls_len = (trunnel_get_uint8(ptr));
- remaining -= 1; ptr += 1;
- {
- size_t remaining_after;
- CHECK_REMAINING(obj->ls_len, truncated);
- remaining_after = remaining - obj->ls_len;
- remaining = obj->ls_len;
- /* Parse union un[ls_type] */
- switch (obj->ls_type) {
- case LS_IPV4:
- /* Parse u32 un_ipv4_addr */
- CHECK_REMAINING(4, fail);
- obj->un_ipv4_addr = trunnel_ntohl(trunnel_get_uint32(ptr));
- remaining -= 4; ptr += 4;
- /* Parse u16 un_ipv4_port */
- CHECK_REMAINING(2, fail);
- obj->un_ipv4_port = trunnel_ntohs(trunnel_get_uint16(ptr));
- remaining -= 2; ptr += 2;
- break;
- case LS_IPV6:
- /* Parse u8 un_ipv6_addr[16] */
- CHECK_REMAINING(16, fail);
- memcpy(obj->un_ipv6_addr, ptr, 16);
- remaining -= 16; ptr += 16;
- /* Parse u16 un_ipv6_port */
- CHECK_REMAINING(2, fail);
- obj->un_ipv6_port = trunnel_ntohs(trunnel_get_uint16(ptr));
- remaining -= 2; ptr += 2;
- break;
- case LS_LEGACY_ID:
- /* Parse u8 un_legacy_id[20] */
- CHECK_REMAINING(20, fail);
- memcpy(obj->un_legacy_id, ptr, 20);
- remaining -= 20; ptr += 20;
- break;
- case LS_ED25519_ID:
- /* Parse u8 un_ed25519_id[32] */
- CHECK_REMAINING(32, fail);
- memcpy(obj->un_ed25519_id, ptr, 32);
- remaining -= 32; ptr += 32;
- break;
- default:
- /* Parse u8 un_unrecognized[] */
- TRUNNEL_DYNARRAY_EXPAND(uint8_t, &obj->un_unrecognized, remaining, {});
- obj->un_unrecognized.n_ = remaining;
- if (remaining)
- memcpy(obj->un_unrecognized.elts_, ptr, remaining);
- ptr += remaining; remaining -= remaining;
- break;
- }
- if (remaining != 0)
- goto fail;
- remaining = remaining_after;
- }
- trunnel_assert(ptr + remaining == input + len_in);
- return len_in - remaining;
- truncated:
- return -2;
- trunnel_alloc_failed:
- return -1;
- fail:
- result = -1;
- return result;
- }
- ssize_t
- link_specifier_parse(link_specifier_t **output, const uint8_t *input, const size_t len_in)
- {
- ssize_t result;
- *output = link_specifier_new();
- if (NULL == *output)
- return -1;
- result = link_specifier_parse_into(*output, input, len_in);
- if (result < 0) {
- link_specifier_free(*output);
- *output = NULL;
- }
- return result;
- }
- ed25519_cert_t *
- ed25519_cert_new(void)
- {
- ed25519_cert_t *val = trunnel_calloc(1, sizeof(ed25519_cert_t));
- if (NULL == val)
- return NULL;
- val->version = 1;
- return val;
- }
- /** Release all storage held inside 'obj', but do not free 'obj'.
- */
- static void
- ed25519_cert_clear(ed25519_cert_t *obj)
- {
- (void) obj;
- {
- unsigned idx;
- for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->ext); ++idx) {
- ed25519_cert_extension_free(TRUNNEL_DYNARRAY_GET(&obj->ext, idx));
- }
- }
- TRUNNEL_DYNARRAY_WIPE(&obj->ext);
- TRUNNEL_DYNARRAY_CLEAR(&obj->ext);
- }
- void
- ed25519_cert_free(ed25519_cert_t *obj)
- {
- if (obj == NULL)
- return;
- ed25519_cert_clear(obj);
- trunnel_memwipe(obj, sizeof(ed25519_cert_t));
- trunnel_free_(obj);
- }
- uint8_t
- ed25519_cert_get_version(ed25519_cert_t *inp)
- {
- return inp->version;
- }
- int
- ed25519_cert_set_version(ed25519_cert_t *inp, uint8_t val)
- {
- if (! ((val == 1))) {
- TRUNNEL_SET_ERROR_CODE(inp);
- return -1;
- }
- inp->version = val;
- return 0;
- }
- uint8_t
- ed25519_cert_get_cert_type(ed25519_cert_t *inp)
- {
- return inp->cert_type;
- }
- int
- ed25519_cert_set_cert_type(ed25519_cert_t *inp, uint8_t val)
- {
- inp->cert_type = val;
- return 0;
- }
- uint32_t
- ed25519_cert_get_exp_field(ed25519_cert_t *inp)
- {
- return inp->exp_field;
- }
- int
- ed25519_cert_set_exp_field(ed25519_cert_t *inp, uint32_t val)
- {
- inp->exp_field = val;
- return 0;
- }
- uint8_t
- ed25519_cert_get_cert_key_type(ed25519_cert_t *inp)
- {
- return inp->cert_key_type;
- }
- int
- ed25519_cert_set_cert_key_type(ed25519_cert_t *inp, uint8_t val)
- {
- inp->cert_key_type = val;
- return 0;
- }
- size_t
- ed25519_cert_getlen_certified_key(const ed25519_cert_t *inp)
- {
- (void)inp; return 32;
- }
- uint8_t
- ed25519_cert_get_certified_key(const ed25519_cert_t *inp, size_t idx)
- {
- trunnel_assert(idx < 32);
- return inp->certified_key[idx];
- }
- int
- ed25519_cert_set_certified_key(ed25519_cert_t *inp, size_t idx, uint8_t elt)
- {
- trunnel_assert(idx < 32);
- inp->certified_key[idx] = elt;
- return 0;
- }
- uint8_t *
- ed25519_cert_getarray_certified_key(ed25519_cert_t *inp)
- {
- return inp->certified_key;
- }
- uint8_t
- ed25519_cert_get_n_extensions(ed25519_cert_t *inp)
- {
- return inp->n_extensions;
- }
- int
- ed25519_cert_set_n_extensions(ed25519_cert_t *inp, uint8_t val)
- {
- inp->n_extensions = val;
- return 0;
- }
- size_t
- ed25519_cert_getlen_ext(const ed25519_cert_t *inp)
- {
- return TRUNNEL_DYNARRAY_LEN(&inp->ext);
- }
- struct ed25519_cert_extension_st *
- ed25519_cert_get_ext(ed25519_cert_t *inp, size_t idx)
- {
- return TRUNNEL_DYNARRAY_GET(&inp->ext, idx);
- }
- int
- ed25519_cert_set_ext(ed25519_cert_t *inp, size_t idx, struct ed25519_cert_extension_st * elt)
- {
- ed25519_cert_extension_t *oldval = TRUNNEL_DYNARRAY_GET(&inp->ext, idx);
- if (oldval && oldval != elt)
- ed25519_cert_extension_free(oldval);
- return ed25519_cert_set0_ext(inp, idx, elt);
- }
- int
- ed25519_cert_set0_ext(ed25519_cert_t *inp, size_t idx, struct ed25519_cert_extension_st * elt)
- {
- TRUNNEL_DYNARRAY_SET(&inp->ext, idx, elt);
- return 0;
- }
- int
- ed25519_cert_add_ext(ed25519_cert_t *inp, struct ed25519_cert_extension_st * elt)
- {
- #if SIZE_MAX >= UINT8_MAX
- if (inp->ext.n_ == UINT8_MAX)
- goto trunnel_alloc_failed;
- #endif
- TRUNNEL_DYNARRAY_ADD(struct ed25519_cert_extension_st *, &inp->ext, elt, {});
- return 0;
- trunnel_alloc_failed:
- TRUNNEL_SET_ERROR_CODE(inp);
- return -1;
- }
- struct ed25519_cert_extension_st * *
- ed25519_cert_getarray_ext(ed25519_cert_t *inp)
- {
- return inp->ext.elts_;
- }
- int
- ed25519_cert_setlen_ext(ed25519_cert_t *inp, size_t newlen)
- {
- struct ed25519_cert_extension_st * *newptr;
- #if UINT8_MAX < SIZE_MAX
- if (newlen > UINT8_MAX)
- goto trunnel_alloc_failed;
- #endif
- newptr = trunnel_dynarray_setlen(&inp->ext.allocated_,
- &inp->ext.n_, inp->ext.elts_, newlen,
- sizeof(inp->ext.elts_[0]), (trunnel_free_fn_t) ed25519_cert_extension_free,
- &inp->trunnel_error_code_);
- if (newptr == NULL)
- goto trunnel_alloc_failed;
- inp->ext.elts_ = newptr;
- return 0;
- trunnel_alloc_failed:
- TRUNNEL_SET_ERROR_CODE(inp);
- return -1;
- }
- size_t
- ed25519_cert_getlen_signature(const ed25519_cert_t *inp)
- {
- (void)inp; return 64;
- }
- uint8_t
- ed25519_cert_get_signature(const ed25519_cert_t *inp, size_t idx)
- {
- trunnel_assert(idx < 64);
- return inp->signature[idx];
- }
- int
- ed25519_cert_set_signature(ed25519_cert_t *inp, size_t idx, uint8_t elt)
- {
- trunnel_assert(idx < 64);
- inp->signature[idx] = elt;
- return 0;
- }
- uint8_t *
- ed25519_cert_getarray_signature(ed25519_cert_t *inp)
- {
- return inp->signature;
- }
- const char *
- ed25519_cert_check(const ed25519_cert_t *obj)
- {
- if (obj == NULL)
- return "Object was NULL";
- if (obj->trunnel_error_code_)
- return "A set function failed on this object";
- if (! (obj->version == 1))
- return "Integer out of bounds";
- {
- const char *msg;
- unsigned idx;
- for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->ext); ++idx) {
- if (NULL != (msg = ed25519_cert_extension_check(TRUNNEL_DYNARRAY_GET(&obj->ext, idx))))
- return msg;
- }
- }
- if (TRUNNEL_DYNARRAY_LEN(&obj->ext) != obj->n_extensions)
- return "Length mismatch for ext";
- return NULL;
- }
- ssize_t
- ed25519_cert_encoded_len(const ed25519_cert_t *obj)
- {
- ssize_t result = 0;
- if (NULL != ed25519_cert_check(obj))
- return -1;
- /* Length of u8 version IN [1] */
- result += 1;
- /* Length of u8 cert_type */
- result += 1;
- /* Length of u32 exp_field */
- result += 4;
- /* Length of u8 cert_key_type */
- result += 1;
- /* Length of u8 certified_key[32] */
- result += 32;
- /* Length of u8 n_extensions */
- result += 1;
- /* Length of struct ed25519_cert_extension ext[n_extensions] */
- {
- unsigned idx;
- for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->ext); ++idx) {
- result += ed25519_cert_extension_encoded_len(TRUNNEL_DYNARRAY_GET(&obj->ext, idx));
- }
- }
- /* Length of u8 signature[64] */
- result += 64;
- return result;
- }
- int
- ed25519_cert_clear_errors(ed25519_cert_t *obj)
- {
- int r = obj->trunnel_error_code_;
- obj->trunnel_error_code_ = 0;
- return r;
- }
- ssize_t
- ed25519_cert_encode(uint8_t *output, const size_t avail, const ed25519_cert_t *obj)
- {
- ssize_t result = 0;
- size_t written = 0;
- uint8_t *ptr = output;
- const char *msg;
- #ifdef TRUNNEL_CHECK_ENCODED_LEN
- const ssize_t encoded_len = ed25519_cert_encoded_len(obj);
- #endif
- if (NULL != (msg = ed25519_cert_check(obj)))
- goto check_failed;
- #ifdef TRUNNEL_CHECK_ENCODED_LEN
- trunnel_assert(encoded_len >= 0);
- #endif
- /* Encode u8 version IN [1] */
- trunnel_assert(written <= avail);
- if (avail - written < 1)
- goto truncated;
- trunnel_set_uint8(ptr, (obj->version));
- written += 1; ptr += 1;
- /* Encode u8 cert_type */
- trunnel_assert(written <= avail);
- if (avail - written < 1)
- goto truncated;
- trunnel_set_uint8(ptr, (obj->cert_type));
- written += 1; ptr += 1;
- /* Encode u32 exp_field */
- trunnel_assert(written <= avail);
- if (avail - written < 4)
- goto truncated;
- trunnel_set_uint32(ptr, trunnel_htonl(obj->exp_field));
- written += 4; ptr += 4;
- /* Encode u8 cert_key_type */
- trunnel_assert(written <= avail);
- if (avail - written < 1)
- goto truncated;
- trunnel_set_uint8(ptr, (obj->cert_key_type));
- written += 1; ptr += 1;
- /* Encode u8 certified_key[32] */
- trunnel_assert(written <= avail);
- if (avail - written < 32)
- goto truncated;
- memcpy(ptr, obj->certified_key, 32);
- written += 32; ptr += 32;
- /* Encode u8 n_extensions */
- trunnel_assert(written <= avail);
- if (avail - written < 1)
- goto truncated;
- trunnel_set_uint8(ptr, (obj->n_extensions));
- written += 1; ptr += 1;
- /* Encode struct ed25519_cert_extension ext[n_extensions] */
- {
- unsigned idx;
- for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->ext); ++idx) {
- trunnel_assert(written <= avail);
- result = ed25519_cert_extension_encode(ptr, avail - written, TRUNNEL_DYNARRAY_GET(&obj->ext, idx));
- if (result < 0)
- goto fail; /* XXXXXXX !*/
- written += result; ptr += result;
- }
- }
- /* Encode u8 signature[64] */
- trunnel_assert(written <= avail);
- if (avail - written < 64)
- goto truncated;
- memcpy(ptr, obj->signature, 64);
- written += 64; ptr += 64;
- trunnel_assert(ptr == output + written);
- #ifdef TRUNNEL_CHECK_ENCODED_LEN
- {
- trunnel_assert(encoded_len >= 0);
- trunnel_assert((size_t)encoded_len == written);
- }
- #endif
- return written;
- truncated:
- result = -2;
- goto fail;
- check_failed:
- (void)msg;
- result = -1;
- goto fail;
- fail:
- trunnel_assert(result < 0);
- return result;
- }
- /** As ed25519_cert_parse(), but do not allocate the output object.
- */
- static ssize_t
- ed25519_cert_parse_into(ed25519_cert_t *obj, const uint8_t *input, const size_t len_in)
- {
- const uint8_t *ptr = input;
- size_t remaining = len_in;
- ssize_t result = 0;
- (void)result;
- /* Parse u8 version IN [1] */
- CHECK_REMAINING(1, truncated);
- obj->version = (trunnel_get_uint8(ptr));
- remaining -= 1; ptr += 1;
- if (! (obj->version == 1))
- goto fail;
- /* Parse u8 cert_type */
- CHECK_REMAINING(1, truncated);
- obj->cert_type = (trunnel_get_uint8(ptr));
- remaining -= 1; ptr += 1;
- /* Parse u32 exp_field */
- CHECK_REMAINING(4, truncated);
- obj->exp_field = trunnel_ntohl(trunnel_get_uint32(ptr));
- remaining -= 4; ptr += 4;
- /* Parse u8 cert_key_type */
- CHECK_REMAINING(1, truncated);
- obj->cert_key_type = (trunnel_get_uint8(ptr));
- remaining -= 1; ptr += 1;
- /* Parse u8 certified_key[32] */
- CHECK_REMAINING(32, truncated);
- memcpy(obj->certified_key, ptr, 32);
- remaining -= 32; ptr += 32;
- /* Parse u8 n_extensions */
- CHECK_REMAINING(1, truncated);
- obj->n_extensions = (trunnel_get_uint8(ptr));
- remaining -= 1; ptr += 1;
- /* Parse struct ed25519_cert_extension ext[n_extensions] */
- TRUNNEL_DYNARRAY_EXPAND(ed25519_cert_extension_t *, &obj->ext, obj->n_extensions, {});
- {
- ed25519_cert_extension_t * elt;
- unsigned idx;
- for (idx = 0; idx < obj->n_extensions; ++idx) {
- result = ed25519_cert_extension_parse(&elt, ptr, remaining);
- if (result < 0)
- goto relay_fail;
- trunnel_assert((size_t)result <= remaining);
- remaining -= result; ptr += result;
- TRUNNEL_DYNARRAY_ADD(ed25519_cert_extension_t *, &obj->ext, elt, {ed25519_cert_extension_free(elt);});
- }
- }
- /* Parse u8 signature[64] */
- CHECK_REMAINING(64, truncated);
- memcpy(obj->signature, ptr, 64);
- remaining -= 64; ptr += 64;
- trunnel_assert(ptr + remaining == input + len_in);
- return len_in - remaining;
- truncated:
- return -2;
- relay_fail:
- trunnel_assert(result < 0);
- return result;
- trunnel_alloc_failed:
- return -1;
- fail:
- result = -1;
- return result;
- }
- ssize_t
- ed25519_cert_parse(ed25519_cert_t **output, const uint8_t *input, const size_t len_in)
- {
- ssize_t result;
- *output = ed25519_cert_new();
- if (NULL == *output)
- return -1;
- result = ed25519_cert_parse_into(*output, input, len_in);
- if (result < 0) {
- ed25519_cert_free(*output);
- *output = NULL;
- }
- return result;
- }
- link_specifier_list_t *
- link_specifier_list_new(void)
- {
- link_specifier_list_t *val = trunnel_calloc(1, sizeof(link_specifier_list_t));
- if (NULL == val)
- return NULL;
- return val;
- }
- /** Release all storage held inside 'obj', but do not free 'obj'.
- */
- static void
- link_specifier_list_clear(link_specifier_list_t *obj)
- {
- (void) obj;
- {
- unsigned idx;
- for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->spec); ++idx) {
- link_specifier_free(TRUNNEL_DYNARRAY_GET(&obj->spec, idx));
- }
- }
- TRUNNEL_DYNARRAY_WIPE(&obj->spec);
- TRUNNEL_DYNARRAY_CLEAR(&obj->spec);
- }
- void
- link_specifier_list_free(link_specifier_list_t *obj)
- {
- if (obj == NULL)
- return;
- link_specifier_list_clear(obj);
- trunnel_memwipe(obj, sizeof(link_specifier_list_t));
- trunnel_free_(obj);
- }
- uint8_t
- link_specifier_list_get_n_spec(link_specifier_list_t *inp)
- {
- return inp->n_spec;
- }
- int
- link_specifier_list_set_n_spec(link_specifier_list_t *inp, uint8_t val)
- {
- inp->n_spec = val;
- return 0;
- }
- size_t
- link_specifier_list_getlen_spec(const link_specifier_list_t *inp)
- {
- return TRUNNEL_DYNARRAY_LEN(&inp->spec);
- }
- struct link_specifier_st *
- link_specifier_list_get_spec(link_specifier_list_t *inp, size_t idx)
- {
- return TRUNNEL_DYNARRAY_GET(&inp->spec, idx);
- }
- int
- link_specifier_list_set_spec(link_specifier_list_t *inp, size_t idx, struct link_specifier_st * elt)
- {
- link_specifier_t *oldval = TRUNNEL_DYNARRAY_GET(&inp->spec, idx);
- if (oldval && oldval != elt)
- link_specifier_free(oldval);
- return link_specifier_list_set0_spec(inp, idx, elt);
- }
- int
- link_specifier_list_set0_spec(link_specifier_list_t *inp, size_t idx, struct link_specifier_st * elt)
- {
- TRUNNEL_DYNARRAY_SET(&inp->spec, idx, elt);
- return 0;
- }
- int
- link_specifier_list_add_spec(link_specifier_list_t *inp, struct link_specifier_st * elt)
- {
- #if SIZE_MAX >= UINT8_MAX
- if (inp->spec.n_ == UINT8_MAX)
- goto trunnel_alloc_failed;
- #endif
- TRUNNEL_DYNARRAY_ADD(struct link_specifier_st *, &inp->spec, elt, {});
- return 0;
- trunnel_alloc_failed:
- TRUNNEL_SET_ERROR_CODE(inp);
- return -1;
- }
- struct link_specifier_st * *
- link_specifier_list_getarray_spec(link_specifier_list_t *inp)
- {
- return inp->spec.elts_;
- }
- int
- link_specifier_list_setlen_spec(link_specifier_list_t *inp, size_t newlen)
- {
- struct link_specifier_st * *newptr;
- #if UINT8_MAX < SIZE_MAX
- if (newlen > UINT8_MAX)
- goto trunnel_alloc_failed;
- #endif
- newptr = trunnel_dynarray_setlen(&inp->spec.allocated_,
- &inp->spec.n_, inp->spec.elts_, newlen,
- sizeof(inp->spec.elts_[0]), (trunnel_free_fn_t) link_specifier_free,
- &inp->trunnel_error_code_);
- if (newptr == NULL)
- goto trunnel_alloc_failed;
- inp->spec.elts_ = newptr;
- return 0;
- trunnel_alloc_failed:
- TRUNNEL_SET_ERROR_CODE(inp);
- return -1;
- }
- const char *
- link_specifier_list_check(const link_specifier_list_t *obj)
- {
- if (obj == NULL)
- return "Object was NULL";
- if (obj->trunnel_error_code_)
- return "A set function failed on this object";
- {
- const char *msg;
- unsigned idx;
- for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->spec); ++idx) {
- if (NULL != (msg = link_specifier_check(TRUNNEL_DYNARRAY_GET(&obj->spec, idx))))
- return msg;
- }
- }
- if (TRUNNEL_DYNARRAY_LEN(&obj->spec) != obj->n_spec)
- return "Length mismatch for spec";
- return NULL;
- }
- ssize_t
- link_specifier_list_encoded_len(const link_specifier_list_t *obj)
- {
- ssize_t result = 0;
- if (NULL != link_specifier_list_check(obj))
- return -1;
- /* Length of u8 n_spec */
- result += 1;
- /* Length of struct link_specifier spec[n_spec] */
- {
- unsigned idx;
- for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->spec); ++idx) {
- result += link_specifier_encoded_len(TRUNNEL_DYNARRAY_GET(&obj->spec, idx));
- }
- }
- return result;
- }
- int
- link_specifier_list_clear_errors(link_specifier_list_t *obj)
- {
- int r = obj->trunnel_error_code_;
- obj->trunnel_error_code_ = 0;
- return r;
- }
- ssize_t
- link_specifier_list_encode(uint8_t *output, const size_t avail, const link_specifier_list_t *obj)
- {
- ssize_t result = 0;
- size_t written = 0;
- uint8_t *ptr = output;
- const char *msg;
- #ifdef TRUNNEL_CHECK_ENCODED_LEN
- const ssize_t encoded_len = link_specifier_list_encoded_len(obj);
- #endif
- if (NULL != (msg = link_specifier_list_check(obj)))
- goto check_failed;
- #ifdef TRUNNEL_CHECK_ENCODED_LEN
- trunnel_assert(encoded_len >= 0);
- #endif
- /* Encode u8 n_spec */
- trunnel_assert(written <= avail);
- if (avail - written < 1)
- goto truncated;
- trunnel_set_uint8(ptr, (obj->n_spec));
- written += 1; ptr += 1;
- /* Encode struct link_specifier spec[n_spec] */
- {
- unsigned idx;
- for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->spec); ++idx) {
- trunnel_assert(written <= avail);
- result = link_specifier_encode(ptr, avail - written, TRUNNEL_DYNARRAY_GET(&obj->spec, idx));
- if (result < 0)
- goto fail; /* XXXXXXX !*/
- written += result; ptr += result;
- }
- }
- trunnel_assert(ptr == output + written);
- #ifdef TRUNNEL_CHECK_ENCODED_LEN
- {
- trunnel_assert(encoded_len >= 0);
- trunnel_assert((size_t)encoded_len == written);
- }
- #endif
- return written;
- truncated:
- result = -2;
- goto fail;
- check_failed:
- (void)msg;
- result = -1;
- goto fail;
- fail:
- trunnel_assert(result < 0);
- return result;
- }
- /** As link_specifier_list_parse(), but do not allocate the output
- * object.
- */
- static ssize_t
- link_specifier_list_parse_into(link_specifier_list_t *obj, const uint8_t *input, const size_t len_in)
- {
- const uint8_t *ptr = input;
- size_t remaining = len_in;
- ssize_t result = 0;
- (void)result;
- /* Parse u8 n_spec */
- CHECK_REMAINING(1, truncated);
- obj->n_spec = (trunnel_get_uint8(ptr));
- remaining -= 1; ptr += 1;
- /* Parse struct link_specifier spec[n_spec] */
- TRUNNEL_DYNARRAY_EXPAND(link_specifier_t *, &obj->spec, obj->n_spec, {});
- {
- link_specifier_t * elt;
- unsigned idx;
- for (idx = 0; idx < obj->n_spec; ++idx) {
- result = link_specifier_parse(&elt, ptr, remaining);
- if (result < 0)
- goto relay_fail;
- trunnel_assert((size_t)result <= remaining);
- remaining -= result; ptr += result;
- TRUNNEL_DYNARRAY_ADD(link_specifier_t *, &obj->spec, elt, {link_specifier_free(elt);});
- }
- }
- trunnel_assert(ptr + remaining == input + len_in);
- return len_in - remaining;
- truncated:
- return -2;
- relay_fail:
- trunnel_assert(result < 0);
- return result;
- trunnel_alloc_failed:
- return -1;
- }
- ssize_t
- link_specifier_list_parse(link_specifier_list_t **output, const uint8_t *input, const size_t len_in)
- {
- ssize_t result;
- *output = link_specifier_list_new();
- if (NULL == *output)
- return -1;
- result = link_specifier_list_parse_into(*output, input, len_in);
- if (result < 0) {
- link_specifier_list_free(*output);
- *output = NULL;
- }
- return result;
- }
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