diff options
Diffstat (limited to 'src/trunnel')
| -rw-r--r-- | src/trunnel/ed25519_cert.c | 887 | ||||
| -rw-r--r-- | src/trunnel/ed25519_cert.h | 288 | ||||
| -rw-r--r-- | src/trunnel/ed25519_cert.trunnel | 76 | ||||
| -rw-r--r-- | src/trunnel/include.am | 21 | ||||
| -rw-r--r-- | src/trunnel/link_handshake.c | 1885 | ||||
| -rw-r--r-- | src/trunnel/link_handshake.h | 654 | ||||
| -rw-r--r-- | src/trunnel/link_handshake.trunnel | 57 |
7 files changed, 3862 insertions, 6 deletions
diff --git a/src/trunnel/ed25519_cert.c b/src/trunnel/ed25519_cert.c new file mode 100644 index 0000000000..2a84e4b163 --- /dev/null +++ b/src/trunnel/ed25519_cert.c @@ -0,0 +1,887 @@ +/* ed25519_cert.c -- generated by Trunnel v1.2. + * 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; + 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; + 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; +} +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: + if (result >= 0) result = -1; + 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; +} diff --git a/src/trunnel/ed25519_cert.h b/src/trunnel/ed25519_cert.h new file mode 100644 index 0000000000..3ddf95ef9f --- /dev/null +++ b/src/trunnel/ed25519_cert.h @@ -0,0 +1,288 @@ +/* ed25519_cert.h -- generated by by Trunnel v1.2. + * https://gitweb.torproject.org/trunnel.git + * You probably shouldn't edit this file. + */ +#ifndef TRUNNEL_ED25519_CERT_H +#define TRUNNEL_ED25519_CERT_H + +#include <stdint.h> +#include "trunnel.h" + +#define CERTEXT_SIGNED_WITH_KEY 4 +#define CERTEXT_FLAG_AFFECTS_VALIDATION 1 +#if !defined(TRUNNEL_OPAQUE) && !defined(TRUNNEL_OPAQUE_ED25519_CERT_EXTENSION) +struct ed25519_cert_extension_st { + uint16_t ext_length; + uint8_t ext_type; + uint8_t ext_flags; + uint8_t un_signing_key[32]; + TRUNNEL_DYNARRAY_HEAD(, uint8_t) un_unparsed; + uint8_t trunnel_error_code_; +}; +#endif +typedef struct ed25519_cert_extension_st ed25519_cert_extension_t; +#if !defined(TRUNNEL_OPAQUE) && !defined(TRUNNEL_OPAQUE_ED25519_CERT) +struct ed25519_cert_st { + uint8_t version; + uint8_t cert_type; + uint32_t exp_field; + uint8_t cert_key_type; + uint8_t certified_key[32]; + uint8_t n_extensions; + TRUNNEL_DYNARRAY_HEAD(, struct ed25519_cert_extension_st *) ext; + uint8_t signature[64]; + uint8_t trunnel_error_code_; +}; +#endif +typedef struct ed25519_cert_st ed25519_cert_t; +/** Return a newly allocated ed25519_cert_extension with all elements + * set to zero. + */ +ed25519_cert_extension_t *ed25519_cert_extension_new(void); +/** Release all storage held by the ed25519_cert_extension in + * 'victim'. (Do nothing if 'victim' is NULL.) + */ +void ed25519_cert_extension_free(ed25519_cert_extension_t *victim); +/** Try to parse a ed25519_cert_extension from the buffer in 'input', + * using up to 'len_in' bytes from the input buffer. On success, + * return the number of bytes consumed and set *output to the newly + * allocated ed25519_cert_extension_t. On failure, return -2 if the + * input appears truncated, and -1 if the input is otherwise invalid. + */ +ssize_t ed25519_cert_extension_parse(ed25519_cert_extension_t **output, const uint8_t *input, const size_t len_in); +/** Return the number of bytes we expect to need to encode the + * ed25519_cert_extension in 'obj'. On failure, return a negative + * value. Note that this value may be an overestimate, and can even be + * an underestimate for certain unencodeable objects. + */ +ssize_t ed25519_cert_extension_encoded_len(const ed25519_cert_extension_t *obj); +/** Try to encode the ed25519_cert_extension from 'input' into the + * buffer at 'output', using up to 'avail' bytes of the output buffer. + * On success, return the number of bytes used. On failure, return -2 + * if the buffer was not long enough, and -1 if the input was invalid. + */ +ssize_t ed25519_cert_extension_encode(uint8_t *output, const size_t avail, const ed25519_cert_extension_t *input); +/** Check whether the internal state of the ed25519_cert_extension in + * 'obj' is consistent. Return NULL if it is, and a short message if + * it is not. + */ +const char *ed25519_cert_extension_check(const ed25519_cert_extension_t *obj); +/** Clear any errors that were set on the object 'obj' by its setter + * functions. Return true iff errors were cleared. + */ +int ed25519_cert_extension_clear_errors(ed25519_cert_extension_t *obj); +/** Return the value of the ext_length field of the + * ed25519_cert_extension_t in 'inp' + */ +uint16_t ed25519_cert_extension_get_ext_length(ed25519_cert_extension_t *inp); +/** Set the value of the ext_length field of the + * ed25519_cert_extension_t in 'inp' to 'val'. Return 0 on success; + * return -1 and set the error code on 'inp' on failure. + */ +int ed25519_cert_extension_set_ext_length(ed25519_cert_extension_t *inp, uint16_t val); +/** Return the value of the ext_type field of the + * ed25519_cert_extension_t in 'inp' + */ +uint8_t ed25519_cert_extension_get_ext_type(ed25519_cert_extension_t *inp); +/** Set the value of the ext_type field of the + * ed25519_cert_extension_t in 'inp' to 'val'. Return 0 on success; + * return -1 and set the error code on 'inp' on failure. + */ +int ed25519_cert_extension_set_ext_type(ed25519_cert_extension_t *inp, uint8_t val); +/** Return the value of the ext_flags field of the + * ed25519_cert_extension_t in 'inp' + */ +uint8_t ed25519_cert_extension_get_ext_flags(ed25519_cert_extension_t *inp); +/** Set the value of the ext_flags field of the + * ed25519_cert_extension_t in 'inp' to 'val'. Return 0 on success; + * return -1 and set the error code on 'inp' on failure. + */ +int ed25519_cert_extension_set_ext_flags(ed25519_cert_extension_t *inp, uint8_t val); +/** Return the (constant) length of the array holding the + * un_signing_key field of the ed25519_cert_extension_t in 'inp'. + */ +size_t ed25519_cert_extension_getlen_un_signing_key(const ed25519_cert_extension_t *inp); +/** Return the element at position 'idx' of the fixed array field + * un_signing_key of the ed25519_cert_extension_t in 'inp'. + */ +uint8_t ed25519_cert_extension_get_un_signing_key(const ed25519_cert_extension_t *inp, size_t idx); +/** Change the element at position 'idx' of the fixed array field + * un_signing_key of the ed25519_cert_extension_t in 'inp', so that it + * will hold the value 'elt'. + */ +int ed25519_cert_extension_set_un_signing_key(ed25519_cert_extension_t *inp, size_t idx, uint8_t elt); +/** Return a pointer to the 32-element array field un_signing_key of + * 'inp'. + */ +uint8_t * ed25519_cert_extension_getarray_un_signing_key(ed25519_cert_extension_t *inp); +/** Return the length of the dynamic array holding the un_unparsed + * field of the ed25519_cert_extension_t in 'inp'. + */ +size_t ed25519_cert_extension_getlen_un_unparsed(const ed25519_cert_extension_t *inp); +/** Return the element at position 'idx' of the dynamic array field + * un_unparsed of the ed25519_cert_extension_t in 'inp'. + */ +uint8_t ed25519_cert_extension_get_un_unparsed(ed25519_cert_extension_t *inp, size_t idx); +/** Change the element at position 'idx' of the dynamic array field + * un_unparsed of the ed25519_cert_extension_t in 'inp', so that it + * will hold the value 'elt'. + */ +int ed25519_cert_extension_set_un_unparsed(ed25519_cert_extension_t *inp, size_t idx, uint8_t elt); +/** Append a new element 'elt' to the dynamic array field un_unparsed + * of the ed25519_cert_extension_t in 'inp'. + */ +int ed25519_cert_extension_add_un_unparsed(ed25519_cert_extension_t *inp, uint8_t elt); +/** Return a pointer to the variable-length array field un_unparsed of + * 'inp'. + */ +uint8_t * ed25519_cert_extension_getarray_un_unparsed(ed25519_cert_extension_t *inp); +/** Change the length of the variable-length array field un_unparsed + * of 'inp' to 'newlen'.Fill extra elements with 0. Return 0 on + * success; return -1 and set the error code on 'inp' on failure. + */ +int ed25519_cert_extension_setlen_un_unparsed(ed25519_cert_extension_t *inp, size_t newlen); +/** Return a newly allocated ed25519_cert with all elements set to + * zero. + */ +ed25519_cert_t *ed25519_cert_new(void); +/** Release all storage held by the ed25519_cert in 'victim'. (Do + * nothing if 'victim' is NULL.) + */ +void ed25519_cert_free(ed25519_cert_t *victim); +/** Try to parse a ed25519_cert from the buffer in 'input', using up + * to 'len_in' bytes from the input buffer. On success, return the + * number of bytes consumed and set *output to the newly allocated + * ed25519_cert_t. On failure, return -2 if the input appears + * truncated, and -1 if the input is otherwise invalid. + */ +ssize_t ed25519_cert_parse(ed25519_cert_t **output, const uint8_t *input, const size_t len_in); +/** Return the number of bytes we expect to need to encode the + * ed25519_cert in 'obj'. On failure, return a negative value. Note + * that this value may be an overestimate, and can even be an + * underestimate for certain unencodeable objects. + */ +ssize_t ed25519_cert_encoded_len(const ed25519_cert_t *obj); +/** Try to encode the ed25519_cert from 'input' into the buffer at + * 'output', using up to 'avail' bytes of the output buffer. On + * success, return the number of bytes used. On failure, return -2 if + * the buffer was not long enough, and -1 if the input was invalid. + */ +ssize_t ed25519_cert_encode(uint8_t *output, const size_t avail, const ed25519_cert_t *input); +/** Check whether the internal state of the ed25519_cert in 'obj' is + * consistent. Return NULL if it is, and a short message if it is not. + */ +const char *ed25519_cert_check(const ed25519_cert_t *obj); +/** Clear any errors that were set on the object 'obj' by its setter + * functions. Return true iff errors were cleared. + */ +int ed25519_cert_clear_errors(ed25519_cert_t *obj); +/** Return the value of the version field of the ed25519_cert_t in + * 'inp' + */ +uint8_t ed25519_cert_get_version(ed25519_cert_t *inp); +/** Set the value of the version field of the ed25519_cert_t in 'inp' + * to 'val'. Return 0 on success; return -1 and set the error code on + * 'inp' on failure. + */ +int ed25519_cert_set_version(ed25519_cert_t *inp, uint8_t val); +/** Return the value of the cert_type field of the ed25519_cert_t in + * 'inp' + */ +uint8_t ed25519_cert_get_cert_type(ed25519_cert_t *inp); +/** Set the value of the cert_type field of the ed25519_cert_t in + * 'inp' to 'val'. Return 0 on success; return -1 and set the error + * code on 'inp' on failure. + */ +int ed25519_cert_set_cert_type(ed25519_cert_t *inp, uint8_t val); +/** Return the value of the exp_field field of the ed25519_cert_t in + * 'inp' + */ +uint32_t ed25519_cert_get_exp_field(ed25519_cert_t *inp); +/** Set the value of the exp_field field of the ed25519_cert_t in + * 'inp' to 'val'. Return 0 on success; return -1 and set the error + * code on 'inp' on failure. + */ +int ed25519_cert_set_exp_field(ed25519_cert_t *inp, uint32_t val); +/** Return the value of the cert_key_type field of the ed25519_cert_t + * in 'inp' + */ +uint8_t ed25519_cert_get_cert_key_type(ed25519_cert_t *inp); +/** Set the value of the cert_key_type field of the ed25519_cert_t in + * 'inp' to 'val'. Return 0 on success; return -1 and set the error + * code on 'inp' on failure. + */ +int ed25519_cert_set_cert_key_type(ed25519_cert_t *inp, uint8_t val); +/** Return the (constant) length of the array holding the + * certified_key field of the ed25519_cert_t in 'inp'. + */ +size_t ed25519_cert_getlen_certified_key(const ed25519_cert_t *inp); +/** Return the element at position 'idx' of the fixed array field + * certified_key of the ed25519_cert_t in 'inp'. + */ +uint8_t ed25519_cert_get_certified_key(const ed25519_cert_t *inp, size_t idx); +/** Change the element at position 'idx' of the fixed array field + * certified_key of the ed25519_cert_t in 'inp', so that it will hold + * the value 'elt'. + */ +int ed25519_cert_set_certified_key(ed25519_cert_t *inp, size_t idx, uint8_t elt); +/** Return a pointer to the 32-element array field certified_key of + * 'inp'. + */ +uint8_t * ed25519_cert_getarray_certified_key(ed25519_cert_t *inp); +/** Return the value of the n_extensions field of the ed25519_cert_t + * in 'inp' + */ +uint8_t ed25519_cert_get_n_extensions(ed25519_cert_t *inp); +/** Set the value of the n_extensions field of the ed25519_cert_t in + * 'inp' to 'val'. Return 0 on success; return -1 and set the error + * code on 'inp' on failure. + */ +int ed25519_cert_set_n_extensions(ed25519_cert_t *inp, uint8_t val); +/** Return the length of the dynamic array holding the ext field of + * the ed25519_cert_t in 'inp'. + */ +size_t ed25519_cert_getlen_ext(const ed25519_cert_t *inp); +/** Return the element at position 'idx' of the dynamic array field + * ext of the ed25519_cert_t in 'inp'. + */ +struct ed25519_cert_extension_st * ed25519_cert_get_ext(ed25519_cert_t *inp, size_t idx); +/** Change the element at position 'idx' of the dynamic array field + * ext of the ed25519_cert_t in 'inp', so that it will hold the value + * 'elt'. Free the previous value, if any. + */ +int ed25519_cert_set_ext(ed25519_cert_t *inp, size_t idx, struct ed25519_cert_extension_st * elt); +/** As ed25519_cert_set_ext, but does not free the previous value. + */ +int ed25519_cert_set0_ext(ed25519_cert_t *inp, size_t idx, struct ed25519_cert_extension_st * elt); +/** Append a new element 'elt' to the dynamic array field ext of the + * ed25519_cert_t in 'inp'. + */ +int ed25519_cert_add_ext(ed25519_cert_t *inp, struct ed25519_cert_extension_st * elt); +/** Return a pointer to the variable-length array field ext of 'inp'. + */ +struct ed25519_cert_extension_st * * ed25519_cert_getarray_ext(ed25519_cert_t *inp); +/** Change the length of the variable-length array field ext of 'inp' + * to 'newlen'.Fill extra elements with NULL; free removed elements. + * Return 0 on success; return -1 and set the error code on 'inp' on + * failure. + */ +int ed25519_cert_setlen_ext(ed25519_cert_t *inp, size_t newlen); +/** Return the (constant) length of the array holding the signature + * field of the ed25519_cert_t in 'inp'. + */ +size_t ed25519_cert_getlen_signature(const ed25519_cert_t *inp); +/** Return the element at position 'idx' of the fixed array field + * signature of the ed25519_cert_t in 'inp'. + */ +uint8_t ed25519_cert_get_signature(const ed25519_cert_t *inp, size_t idx); +/** Change the element at position 'idx' of the fixed array field + * signature of the ed25519_cert_t in 'inp', so that it will hold the + * value 'elt'. + */ +int ed25519_cert_set_signature(ed25519_cert_t *inp, size_t idx, uint8_t elt); +/** Return a pointer to the 64-element array field signature of 'inp'. + */ +uint8_t * ed25519_cert_getarray_signature(ed25519_cert_t *inp); + + +#endif diff --git a/src/trunnel/ed25519_cert.trunnel b/src/trunnel/ed25519_cert.trunnel new file mode 100644 index 0000000000..c46f1b6c6b --- /dev/null +++ b/src/trunnel/ed25519_cert.trunnel @@ -0,0 +1,76 @@ + +struct ed25519_cert { + u8 version IN [1]; + u8 cert_type; + u32 exp_field; + u8 cert_key_type; + u8 certified_key[32]; + u8 n_extensions; + struct ed25519_cert_extension ext[n_extensions]; + u8 signature[64]; +} + +const CERTEXT_SIGNED_WITH_KEY = 4; +const CERTEXT_FLAG_AFFECTS_VALIDATION = 1; + +struct ed25519_cert_extension { + u16 ext_length; + u8 ext_type; + u8 ext_flags; + union un[ext_type] with length ext_length { + CERTEXT_SIGNED_WITH_KEY : u8 signing_key[32]; + default: u8 unparsed[]; + }; +} + +/* +struct cert_revocation { + u8 prefix[8]; + u8 version IN [1]; + u8 keytype; + u8 identity_key[32]; + u8 revoked_key[32]; + u64 published; + u8 n_extensions; + struct cert_extension ext[n_extensions]; + u8 signature[64]; +} + +struct crosscert_ed_rsa { + u8 ed_key[32]; + u32 expiration_date; + u8 signature[128]; +} + +struct auth02_cell { + u8 type[8]; + u8 cid[32]; + u8 sid[32]; + u8 cid_ed[32]; + u8 sid_ed[32]; + u8 slog[32]; + u8 clog[32]; + u8 scert[32]; + u8 tlssecrets[32]; + u8 rand[24]; + u8 sig[64]; +} + +const LS_IPV4 = 0x00; +const LS_IPV6 = 0x01; +const LS_LEGACY_ID = 0x02; +const LS_ED25519_ID = 0x03; + +// amended from tor.trunnel +struct link_specifier { + u8 ls_type; + u8 ls_len; + union un[ls_type] with length ls_len { + LS_IPV4: u32 ipv4_addr; u16 ipv4_port; + LS_IPV6: u8 ipv6_addr[16]; u16 ipv6_port; + LS_LEGACY_ID: u8 legacy_id[20]; + LS_ED25519_ID: u8 ed25519_id[32]; + default: u8 unrecognized[]; + }; +} +*/
\ No newline at end of file diff --git a/src/trunnel/include.am b/src/trunnel/include.am index 54e3db287e..9bf37fe58b 100644 --- a/src/trunnel/include.am +++ b/src/trunnel/include.am @@ -9,15 +9,24 @@ endif AM_CPPFLAGS += -I$(srcdir)/src/ext/trunnel -I$(srcdir)/src/trunnel +TRUNNELINPUTS = \ + src/trunnel/ed25519_cert.trunnel \ + src/trunnel/link_handshake.trunnel \ + src/trunnel/pwbox.trunnel + TRUNNELSOURCES = \ - src/ext/trunnel/trunnel.c \ - src/trunnel/pwbox.c + src/ext/trunnel/trunnel.c \ + src/trunnel/ed25519_cert.c \ + src/trunnel/link_handshake.c \ + src/trunnel/pwbox.c TRUNNELHEADERS = \ - src/ext/trunnel/trunnel.h \ - src/ext/trunnel/trunnel-impl.h \ - src/trunnel/trunnel-local.h \ - src/trunnel/pwbox.h + src/ext/trunnel/trunnel.h \ + src/ext/trunnel/trunnel-impl.h \ + src/trunnel/trunnel-local.h \ + src/trunnel/ed25519_cert.h \ + src/trunnel/link_handshake.h \ + src/trunnel/pwbox.h src_trunnel_libor_trunnel_a_SOURCES = $(TRUNNELSOURCES) src_trunnel_libor_trunnel_a_CPPFLAGS = -DTRUNNEL_LOCAL_H $(AM_CPPFLAGS) diff --git a/src/trunnel/link_handshake.c b/src/trunnel/link_handshake.c new file mode 100644 index 0000000000..9630d1340d --- /dev/null +++ b/src/trunnel/link_handshake.c @@ -0,0 +1,1885 @@ +/* link_handshake.c -- generated by Trunnel v1.4-pre. + * https://gitweb.torproject.org/trunnel.git + * You probably shouldn't edit this file. + */ +#include <stdlib.h> +#include "trunnel-impl.h" + +#include "link_handshake.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 linkhandshake_deadcode_dummy__ = 0; +#define OR_DEADCODE_DUMMY || linkhandshake_deadcode_dummy__ +#else +#define OR_DEADCODE_DUMMY +#endif + +#define CHECK_REMAINING(nbytes, label) \ + do { \ + if (remaining < (nbytes) OR_DEADCODE_DUMMY) { \ + goto label; \ + } \ + } while (0) + +auth_challenge_cell_t * +auth_challenge_cell_new(void) +{ + auth_challenge_cell_t *val = trunnel_calloc(1, sizeof(auth_challenge_cell_t)); + if (NULL == val) + return NULL; + return val; +} + +/** Release all storage held inside 'obj', but do not free 'obj'. + */ +static void +auth_challenge_cell_clear(auth_challenge_cell_t *obj) +{ + (void) obj; + TRUNNEL_DYNARRAY_WIPE(&obj->methods); + TRUNNEL_DYNARRAY_CLEAR(&obj->methods); +} + +void +auth_challenge_cell_free(auth_challenge_cell_t *obj) +{ + if (obj == NULL) + return; + auth_challenge_cell_clear(obj); + trunnel_memwipe(obj, sizeof(auth_challenge_cell_t)); + trunnel_free_(obj); +} + +size_t +auth_challenge_cell_getlen_challenge(const auth_challenge_cell_t *inp) +{ + (void)inp; return 32; +} + +uint8_t +auth_challenge_cell_get_challenge(const auth_challenge_cell_t *inp, size_t idx) +{ + trunnel_assert(idx < 32); + return inp->challenge[idx]; +} + +int +auth_challenge_cell_set_challenge(auth_challenge_cell_t *inp, size_t idx, uint8_t elt) +{ + trunnel_assert(idx < 32); + inp->challenge[idx] = elt; + return 0; +} + +uint8_t * +auth_challenge_cell_getarray_challenge(auth_challenge_cell_t *inp) +{ + return inp->challenge; +} +uint16_t +auth_challenge_cell_get_n_methods(auth_challenge_cell_t *inp) +{ + return inp->n_methods; +} +int +auth_challenge_cell_set_n_methods(auth_challenge_cell_t *inp, uint16_t val) +{ + inp->n_methods = val; + return 0; +} +size_t +auth_challenge_cell_getlen_methods(const auth_challenge_cell_t *inp) +{ + return TRUNNEL_DYNARRAY_LEN(&inp->methods); +} + +uint16_t +auth_challenge_cell_get_methods(auth_challenge_cell_t *inp, size_t idx) +{ + return TRUNNEL_DYNARRAY_GET(&inp->methods, idx); +} + +int +auth_challenge_cell_set_methods(auth_challenge_cell_t *inp, size_t idx, uint16_t elt) +{ + TRUNNEL_DYNARRAY_SET(&inp->methods, idx, elt); + return 0; +} +int +auth_challenge_cell_add_methods(auth_challenge_cell_t *inp, uint16_t elt) +{ +#if SIZE_MAX >= UINT16_MAX + if (inp->methods.n_ == UINT16_MAX) + goto trunnel_alloc_failed; +#endif + TRUNNEL_DYNARRAY_ADD(uint16_t, &inp->methods, elt, {}); + return 0; + trunnel_alloc_failed: + TRUNNEL_SET_ERROR_CODE(inp); + return -1; +} + +uint16_t * +auth_challenge_cell_getarray_methods(auth_challenge_cell_t *inp) +{ + return inp->methods.elts_; +} +int +auth_challenge_cell_setlen_methods(auth_challenge_cell_t *inp, size_t newlen) +{ + uint16_t *newptr; +#if UINT16_MAX < SIZE_MAX + if (newlen > UINT16_MAX) + goto trunnel_alloc_failed; +#endif + newptr = trunnel_dynarray_setlen(&inp->methods.allocated_, + &inp->methods.n_, inp->methods.elts_, newlen, + sizeof(inp->methods.elts_[0]), (trunnel_free_fn_t) NULL, + &inp->trunnel_error_code_); + if (newptr == NULL) + goto trunnel_alloc_failed; + inp->methods.elts_ = newptr; + return 0; + trunnel_alloc_failed: + TRUNNEL_SET_ERROR_CODE(inp); + return -1; +} +const char * +auth_challenge_cell_check(const auth_challenge_cell_t *obj) +{ + if (obj == NULL) + return "Object was NULL"; + if (obj->trunnel_error_code_) + return "A set function failed on this object"; + if (TRUNNEL_DYNARRAY_LEN(&obj->methods) != obj->n_methods) + return "Length mismatch for methods"; + return NULL; +} + +ssize_t +auth_challenge_cell_encoded_len(const auth_challenge_cell_t *obj) +{ + ssize_t result = 0; + + if (NULL != auth_challenge_cell_check(obj)) + return -1; + + + /* Length of u8 challenge[32] */ + result += 32; + + /* Length of u16 n_methods */ + result += 2; + + /* Length of u16 methods[n_methods] */ + result += 2 * TRUNNEL_DYNARRAY_LEN(&obj->methods); + return result; +} +int +auth_challenge_cell_clear_errors(auth_challenge_cell_t *obj) +{ + int r = obj->trunnel_error_code_; + obj->trunnel_error_code_ = 0; + return r; +} +ssize_t +auth_challenge_cell_encode(uint8_t *output, const size_t avail, const auth_challenge_cell_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 = auth_challenge_cell_encoded_len(obj); +#endif + + if (NULL != (msg = auth_challenge_cell_check(obj))) + goto check_failed; + +#ifdef TRUNNEL_CHECK_ENCODED_LEN + trunnel_assert(encoded_len >= 0); +#endif + + /* Encode u8 challenge[32] */ + trunnel_assert(written <= avail); + if (avail - written < 32) + goto truncated; + memcpy(ptr, obj->challenge, 32); + written += 32; ptr += 32; + + /* Encode u16 n_methods */ + trunnel_assert(written <= avail); + if (avail - written < 2) + goto truncated; + trunnel_set_uint16(ptr, trunnel_htons(obj->n_methods)); + written += 2; ptr += 2; + + /* Encode u16 methods[n_methods] */ + { + + unsigned idx; + for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->methods); ++idx) { + trunnel_assert(written <= avail); + if (avail - written < 2) + goto truncated; + trunnel_set_uint16(ptr, trunnel_htons(TRUNNEL_DYNARRAY_GET(&obj->methods, idx))); + written += 2; ptr += 2; + } + } + + + 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 auth_challenge_cell_parse(), but do not allocate the output + * object. + */ +static ssize_t +auth_challenge_cell_parse_into(auth_challenge_cell_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 challenge[32] */ + CHECK_REMAINING(32, truncated); + memcpy(obj->challenge, ptr, 32); + remaining -= 32; ptr += 32; + + /* Parse u16 n_methods */ + CHECK_REMAINING(2, truncated); + obj->n_methods = trunnel_ntohs(trunnel_get_uint16(ptr)); + remaining -= 2; ptr += 2; + + /* Parse u16 methods[n_methods] */ + TRUNNEL_DYNARRAY_EXPAND(uint16_t, &obj->methods, obj->n_methods, {}); + { + uint16_t elt; + unsigned idx; + for (idx = 0; idx < obj->n_methods; ++idx) { + CHECK_REMAINING(2, truncated); + elt = trunnel_ntohs(trunnel_get_uint16(ptr)); + remaining -= 2; ptr += 2; + TRUNNEL_DYNARRAY_ADD(uint16_t, &obj->methods, elt, {}); + } + } + trunnel_assert(ptr + remaining == input + len_in); + return len_in - remaining; + + truncated: + return -2; + trunnel_alloc_failed: + return -1; +} + +ssize_t +auth_challenge_cell_parse(auth_challenge_cell_t **output, const uint8_t *input, const size_t len_in) +{ + ssize_t result; + *output = auth_challenge_cell_new(); + if (NULL == *output) + return -1; + result = auth_challenge_cell_parse_into(*output, input, len_in); + if (result < 0) { + auth_challenge_cell_free(*output); + *output = NULL; + } + return result; +} +auth_ctx_t * +auth_ctx_new(void) +{ + auth_ctx_t *val = trunnel_calloc(1, sizeof(auth_ctx_t)); + if (NULL == val) + return NULL; + return val; +} + +/** Release all storage held inside 'obj', but do not free 'obj'. + */ +static void +auth_ctx_clear(auth_ctx_t *obj) +{ + (void) obj; +} + +void +auth_ctx_free(auth_ctx_t *obj) +{ + if (obj == NULL) + return; + auth_ctx_clear(obj); + trunnel_memwipe(obj, sizeof(auth_ctx_t)); + trunnel_free_(obj); +} + +uint8_t +auth_ctx_get_is_ed(auth_ctx_t *inp) +{ + return inp->is_ed; +} +int +auth_ctx_set_is_ed(auth_ctx_t *inp, uint8_t val) +{ + inp->is_ed = val; + return 0; +} +certs_cell_cert_t * +certs_cell_cert_new(void) +{ + certs_cell_cert_t *val = trunnel_calloc(1, sizeof(certs_cell_cert_t)); + if (NULL == val) + return NULL; + return val; +} + +/** Release all storage held inside 'obj', but do not free 'obj'. + */ +static void +certs_cell_cert_clear(certs_cell_cert_t *obj) +{ + (void) obj; + TRUNNEL_DYNARRAY_WIPE(&obj->body); + TRUNNEL_DYNARRAY_CLEAR(&obj->body); +} + +void +certs_cell_cert_free(certs_cell_cert_t *obj) +{ + if (obj == NULL) + return; + certs_cell_cert_clear(obj); + trunnel_memwipe(obj, sizeof(certs_cell_cert_t)); + trunnel_free_(obj); +} + +uint8_t +certs_cell_cert_get_cert_type(certs_cell_cert_t *inp) +{ + return inp->cert_type; +} +int +certs_cell_cert_set_cert_type(certs_cell_cert_t *inp, uint8_t val) +{ + inp->cert_type = val; + return 0; +} +uint16_t +certs_cell_cert_get_cert_len(certs_cell_cert_t *inp) +{ + return inp->cert_len; +} +int +certs_cell_cert_set_cert_len(certs_cell_cert_t *inp, uint16_t val) +{ + inp->cert_len = val; + return 0; +} +size_t +certs_cell_cert_getlen_body(const certs_cell_cert_t *inp) +{ + return TRUNNEL_DYNARRAY_LEN(&inp->body); +} + +uint8_t +certs_cell_cert_get_body(certs_cell_cert_t *inp, size_t idx) +{ + return TRUNNEL_DYNARRAY_GET(&inp->body, idx); +} + +int +certs_cell_cert_set_body(certs_cell_cert_t *inp, size_t idx, uint8_t elt) +{ + TRUNNEL_DYNARRAY_SET(&inp->body, idx, elt); + return 0; +} +int +certs_cell_cert_add_body(certs_cell_cert_t *inp, uint8_t elt) +{ +#if SIZE_MAX >= UINT16_MAX + if (inp->body.n_ == UINT16_MAX) + goto trunnel_alloc_failed; +#endif + TRUNNEL_DYNARRAY_ADD(uint8_t, &inp->body, elt, {}); + return 0; + trunnel_alloc_failed: + TRUNNEL_SET_ERROR_CODE(inp); + return -1; +} + +uint8_t * +certs_cell_cert_getarray_body(certs_cell_cert_t *inp) +{ + return inp->body.elts_; +} +int +certs_cell_cert_setlen_body(certs_cell_cert_t *inp, size_t newlen) +{ + uint8_t *newptr; +#if UINT16_MAX < SIZE_MAX + if (newlen > UINT16_MAX) + goto trunnel_alloc_failed; +#endif + newptr = trunnel_dynarray_setlen(&inp->body.allocated_, + &inp->body.n_, inp->body.elts_, newlen, + sizeof(inp->body.elts_[0]), (trunnel_free_fn_t) NULL, + &inp->trunnel_error_code_); + if (newptr == NULL) + goto trunnel_alloc_failed; + inp->body.elts_ = newptr; + return 0; + trunnel_alloc_failed: + TRUNNEL_SET_ERROR_CODE(inp); + return -1; +} +const char * +certs_cell_cert_check(const certs_cell_cert_t *obj) +{ + if (obj == NULL) + return "Object was NULL"; + if (obj->trunnel_error_code_) + return "A set function failed on this object"; + if (TRUNNEL_DYNARRAY_LEN(&obj->body) != obj->cert_len) + return "Length mismatch for body"; + return NULL; +} + +ssize_t +certs_cell_cert_encoded_len(const certs_cell_cert_t *obj) +{ + ssize_t result = 0; + + if (NULL != certs_cell_cert_check(obj)) + return -1; + + + /* Length of u8 cert_type */ + result += 1; + + /* Length of u16 cert_len */ + result += 2; + + /* Length of u8 body[cert_len] */ + result += TRUNNEL_DYNARRAY_LEN(&obj->body); + return result; +} +int +certs_cell_cert_clear_errors(certs_cell_cert_t *obj) +{ + int r = obj->trunnel_error_code_; + obj->trunnel_error_code_ = 0; + return r; +} +ssize_t +certs_cell_cert_encode(uint8_t *output, const size_t avail, const certs_cell_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 = certs_cell_cert_encoded_len(obj); +#endif + + if (NULL != (msg = certs_cell_cert_check(obj))) + goto check_failed; + +#ifdef TRUNNEL_CHECK_ENCODED_LEN + trunnel_assert(encoded_len >= 0); +#endif + + /* 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 u16 cert_len */ + trunnel_assert(written <= avail); + if (avail - written < 2) + goto truncated; + trunnel_set_uint16(ptr, trunnel_htons(obj->cert_len)); + written += 2; ptr += 2; + + /* Encode u8 body[cert_len] */ + { + size_t elt_len = TRUNNEL_DYNARRAY_LEN(&obj->body); + trunnel_assert(obj->cert_len == elt_len); + trunnel_assert(written <= avail); + if (avail - written < elt_len) + goto truncated; + memcpy(ptr, obj->body.elts_, elt_len); + written += elt_len; ptr += elt_len; + } + + + 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 certs_cell_cert_parse(), but do not allocate the output object. + */ +static ssize_t +certs_cell_cert_parse_into(certs_cell_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 cert_type */ + CHECK_REMAINING(1, truncated); + obj->cert_type = (trunnel_get_uint8(ptr)); + remaining -= 1; ptr += 1; + + /* Parse u16 cert_len */ + CHECK_REMAINING(2, truncated); + obj->cert_len = trunnel_ntohs(trunnel_get_uint16(ptr)); + remaining -= 2; ptr += 2; + + /* Parse u8 body[cert_len] */ + CHECK_REMAINING(obj->cert_len, truncated); + TRUNNEL_DYNARRAY_EXPAND(uint8_t, &obj->body, obj->cert_len, {}); + obj->body.n_ = obj->cert_len; + memcpy(obj->body.elts_, ptr, obj->cert_len); + ptr += obj->cert_len; remaining -= obj->cert_len; + trunnel_assert(ptr + remaining == input + len_in); + return len_in - remaining; + + truncated: + return -2; + trunnel_alloc_failed: + return -1; +} + +ssize_t +certs_cell_cert_parse(certs_cell_cert_t **output, const uint8_t *input, const size_t len_in) +{ + ssize_t result; + *output = certs_cell_cert_new(); + if (NULL == *output) + return -1; + result = certs_cell_cert_parse_into(*output, input, len_in); + if (result < 0) { + certs_cell_cert_free(*output); + *output = NULL; + } + return result; +} +rsa_ed_crosscert_t * +rsa_ed_crosscert_new(void) +{ + rsa_ed_crosscert_t *val = trunnel_calloc(1, sizeof(rsa_ed_crosscert_t)); + if (NULL == val) + return NULL; + return val; +} + +/** Release all storage held inside 'obj', but do not free 'obj'. + */ +static void +rsa_ed_crosscert_clear(rsa_ed_crosscert_t *obj) +{ + (void) obj; + TRUNNEL_DYNARRAY_WIPE(&obj->sig); + TRUNNEL_DYNARRAY_CLEAR(&obj->sig); +} + +void +rsa_ed_crosscert_free(rsa_ed_crosscert_t *obj) +{ + if (obj == NULL) + return; + rsa_ed_crosscert_clear(obj); + trunnel_memwipe(obj, sizeof(rsa_ed_crosscert_t)); + trunnel_free_(obj); +} + +size_t +rsa_ed_crosscert_getlen_ed_key(const rsa_ed_crosscert_t *inp) +{ + (void)inp; return 32; +} + +uint8_t +rsa_ed_crosscert_get_ed_key(const rsa_ed_crosscert_t *inp, size_t idx) +{ + trunnel_assert(idx < 32); + return inp->ed_key[idx]; +} + +int +rsa_ed_crosscert_set_ed_key(rsa_ed_crosscert_t *inp, size_t idx, uint8_t elt) +{ + trunnel_assert(idx < 32); + inp->ed_key[idx] = elt; + return 0; +} + +uint8_t * +rsa_ed_crosscert_getarray_ed_key(rsa_ed_crosscert_t *inp) +{ + return inp->ed_key; +} +uint32_t +rsa_ed_crosscert_get_expiration(rsa_ed_crosscert_t *inp) +{ + return inp->expiration; +} +int +rsa_ed_crosscert_set_expiration(rsa_ed_crosscert_t *inp, uint32_t val) +{ + inp->expiration = val; + return 0; +} +const uint8_t * +rsa_ed_crosscert_get_end_of_signed(const rsa_ed_crosscert_t *inp) +{ + return inp->end_of_signed; +} +uint8_t +rsa_ed_crosscert_get_sig_len(rsa_ed_crosscert_t *inp) +{ + return inp->sig_len; +} +int +rsa_ed_crosscert_set_sig_len(rsa_ed_crosscert_t *inp, uint8_t val) +{ + inp->sig_len = val; + return 0; +} +size_t +rsa_ed_crosscert_getlen_sig(const rsa_ed_crosscert_t *inp) +{ + return TRUNNEL_DYNARRAY_LEN(&inp->sig); +} + +uint8_t +rsa_ed_crosscert_get_sig(rsa_ed_crosscert_t *inp, size_t idx) +{ + return TRUNNEL_DYNARRAY_GET(&inp->sig, idx); +} + +int +rsa_ed_crosscert_set_sig(rsa_ed_crosscert_t *inp, size_t idx, uint8_t elt) +{ + TRUNNEL_DYNARRAY_SET(&inp->sig, idx, elt); + return 0; +} +int +rsa_ed_crosscert_add_sig(rsa_ed_crosscert_t *inp, uint8_t elt) +{ +#if SIZE_MAX >= UINT8_MAX + if (inp->sig.n_ == UINT8_MAX) + goto trunnel_alloc_failed; +#endif + TRUNNEL_DYNARRAY_ADD(uint8_t, &inp->sig, elt, {}); + return 0; + trunnel_alloc_failed: + TRUNNEL_SET_ERROR_CODE(inp); + return -1; +} + +uint8_t * +rsa_ed_crosscert_getarray_sig(rsa_ed_crosscert_t *inp) +{ + return inp->sig.elts_; +} +int +rsa_ed_crosscert_setlen_sig(rsa_ed_crosscert_t *inp, size_t newlen) +{ + uint8_t *newptr; +#if UINT8_MAX < SIZE_MAX + if (newlen > UINT8_MAX) + goto trunnel_alloc_failed; +#endif + newptr = trunnel_dynarray_setlen(&inp->sig.allocated_, + &inp->sig.n_, inp->sig.elts_, newlen, + sizeof(inp->sig.elts_[0]), (trunnel_free_fn_t) NULL, + &inp->trunnel_error_code_); + if (newptr == NULL) + goto trunnel_alloc_failed; + inp->sig.elts_ = newptr; + return 0; + trunnel_alloc_failed: + TRUNNEL_SET_ERROR_CODE(inp); + return -1; +} +const char * +rsa_ed_crosscert_check(const rsa_ed_crosscert_t *obj) +{ + if (obj == NULL) + return "Object was NULL"; + if (obj->trunnel_error_code_) + return "A set function failed on this object"; + if (TRUNNEL_DYNARRAY_LEN(&obj->sig) != obj->sig_len) + return "Length mismatch for sig"; + return NULL; +} + +ssize_t +rsa_ed_crosscert_encoded_len(const rsa_ed_crosscert_t *obj) +{ + ssize_t result = 0; + + if (NULL != rsa_ed_crosscert_check(obj)) + return -1; + + + /* Length of u8 ed_key[32] */ + result += 32; + + /* Length of u32 expiration */ + result += 4; + + /* Length of u8 sig_len */ + result += 1; + + /* Length of u8 sig[sig_len] */ + result += TRUNNEL_DYNARRAY_LEN(&obj->sig); + return result; +} +int +rsa_ed_crosscert_clear_errors(rsa_ed_crosscert_t *obj) +{ + int r = obj->trunnel_error_code_; + obj->trunnel_error_code_ = 0; + return r; +} +ssize_t +rsa_ed_crosscert_encode(uint8_t *output, const size_t avail, const rsa_ed_crosscert_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 = rsa_ed_crosscert_encoded_len(obj); +#endif + + if (NULL != (msg = rsa_ed_crosscert_check(obj))) + goto check_failed; + +#ifdef TRUNNEL_CHECK_ENCODED_LEN + trunnel_assert(encoded_len >= 0); +#endif + + /* Encode u8 ed_key[32] */ + trunnel_assert(written <= avail); + if (avail - written < 32) + goto truncated; + memcpy(ptr, obj->ed_key, 32); + written += 32; ptr += 32; + + /* Encode u32 expiration */ + trunnel_assert(written <= avail); + if (avail - written < 4) + goto truncated; + trunnel_set_uint32(ptr, trunnel_htonl(obj->expiration)); + written += 4; ptr += 4; + + /* Encode u8 sig_len */ + trunnel_assert(written <= avail); + if (avail - written < 1) + goto truncated; + trunnel_set_uint8(ptr, (obj->sig_len)); + written += 1; ptr += 1; + + /* Encode u8 sig[sig_len] */ + { + size_t elt_len = TRUNNEL_DYNARRAY_LEN(&obj->sig); + trunnel_assert(obj->sig_len == elt_len); + trunnel_assert(written <= avail); + if (avail - written < elt_len) + goto truncated; + memcpy(ptr, obj->sig.elts_, elt_len); + written += elt_len; ptr += elt_len; + } + + + 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 rsa_ed_crosscert_parse(), but do not allocate the output + * object. + */ +static ssize_t +rsa_ed_crosscert_parse_into(rsa_ed_crosscert_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 ed_key[32] */ + CHECK_REMAINING(32, truncated); + memcpy(obj->ed_key, ptr, 32); + remaining -= 32; ptr += 32; + + /* Parse u32 expiration */ + CHECK_REMAINING(4, truncated); + obj->expiration = trunnel_ntohl(trunnel_get_uint32(ptr)); + remaining -= 4; ptr += 4; + obj->end_of_signed = ptr; + + /* Parse u8 sig_len */ + CHECK_REMAINING(1, truncated); + obj->sig_len = (trunnel_get_uint8(ptr)); + remaining -= 1; ptr += 1; + + /* Parse u8 sig[sig_len] */ + CHECK_REMAINING(obj->sig_len, truncated); + TRUNNEL_DYNARRAY_EXPAND(uint8_t, &obj->sig, obj->sig_len, {}); + obj->sig.n_ = obj->sig_len; + memcpy(obj->sig.elts_, ptr, obj->sig_len); + ptr += obj->sig_len; remaining -= obj->sig_len; + trunnel_assert(ptr + remaining == input + len_in); + return len_in - remaining; + + truncated: + return -2; + trunnel_alloc_failed: + return -1; +} + +ssize_t +rsa_ed_crosscert_parse(rsa_ed_crosscert_t **output, const uint8_t *input, const size_t len_in) +{ + ssize_t result; + *output = rsa_ed_crosscert_new(); + if (NULL == *output) + return -1; + result = rsa_ed_crosscert_parse_into(*output, input, len_in); + if (result < 0) { + rsa_ed_crosscert_free(*output); + *output = NULL; + } + return result; +} +auth1_t * +auth1_new(void) +{ + auth1_t *val = trunnel_calloc(1, sizeof(auth1_t)); + if (NULL == val) + return NULL; + return val; +} + +/** Release all storage held inside 'obj', but do not free 'obj'. + */ +static void +auth1_clear(auth1_t *obj) +{ + (void) obj; + TRUNNEL_DYNARRAY_WIPE(&obj->sig); + TRUNNEL_DYNARRAY_CLEAR(&obj->sig); +} + +void +auth1_free(auth1_t *obj) +{ + if (obj == NULL) + return; + auth1_clear(obj); + trunnel_memwipe(obj, sizeof(auth1_t)); + trunnel_free_(obj); +} + +size_t +auth1_getlen_type(const auth1_t *inp) +{ + (void)inp; return 8; +} + +uint8_t +auth1_get_type(const auth1_t *inp, size_t idx) +{ + trunnel_assert(idx < 8); + return inp->type[idx]; +} + +int +auth1_set_type(auth1_t *inp, size_t idx, uint8_t elt) +{ + trunnel_assert(idx < 8); + inp->type[idx] = elt; + return 0; +} + +uint8_t * +auth1_getarray_type(auth1_t *inp) +{ + return inp->type; +} +size_t +auth1_getlen_cid(const auth1_t *inp) +{ + (void)inp; return 32; +} + +uint8_t +auth1_get_cid(const auth1_t *inp, size_t idx) +{ + trunnel_assert(idx < 32); + return inp->cid[idx]; +} + +int +auth1_set_cid(auth1_t *inp, size_t idx, uint8_t elt) +{ + trunnel_assert(idx < 32); + inp->cid[idx] = elt; + return 0; +} + +uint8_t * +auth1_getarray_cid(auth1_t *inp) +{ + return inp->cid; +} +size_t +auth1_getlen_sid(const auth1_t *inp) +{ + (void)inp; return 32; +} + +uint8_t +auth1_get_sid(const auth1_t *inp, size_t idx) +{ + trunnel_assert(idx < 32); + return inp->sid[idx]; +} + +int +auth1_set_sid(auth1_t *inp, size_t idx, uint8_t elt) +{ + trunnel_assert(idx < 32); + inp->sid[idx] = elt; + return 0; +} + +uint8_t * +auth1_getarray_sid(auth1_t *inp) +{ + return inp->sid; +} +size_t +auth1_getlen_u1_cid_ed(const auth1_t *inp) +{ + (void)inp; return 32; +} + +uint8_t +auth1_get_u1_cid_ed(const auth1_t *inp, size_t idx) +{ + trunnel_assert(idx < 32); + return inp->u1_cid_ed[idx]; +} + +int +auth1_set_u1_cid_ed(auth1_t *inp, size_t idx, uint8_t elt) +{ + trunnel_assert(idx < 32); + inp->u1_cid_ed[idx] = elt; + return 0; +} + +uint8_t * +auth1_getarray_u1_cid_ed(auth1_t *inp) +{ + return inp->u1_cid_ed; +} +size_t +auth1_getlen_u1_sid_ed(const auth1_t *inp) +{ + (void)inp; return 32; +} + +uint8_t +auth1_get_u1_sid_ed(const auth1_t *inp, size_t idx) +{ + trunnel_assert(idx < 32); + return inp->u1_sid_ed[idx]; +} + +int +auth1_set_u1_sid_ed(auth1_t *inp, size_t idx, uint8_t elt) +{ + trunnel_assert(idx < 32); + inp->u1_sid_ed[idx] = elt; + return 0; +} + +uint8_t * +auth1_getarray_u1_sid_ed(auth1_t *inp) +{ + return inp->u1_sid_ed; +} +size_t +auth1_getlen_slog(const auth1_t *inp) +{ + (void)inp; return 32; +} + +uint8_t +auth1_get_slog(const auth1_t *inp, size_t idx) +{ + trunnel_assert(idx < 32); + return inp->slog[idx]; +} + +int +auth1_set_slog(auth1_t *inp, size_t idx, uint8_t elt) +{ + trunnel_assert(idx < 32); + inp->slog[idx] = elt; + return 0; +} + +uint8_t * +auth1_getarray_slog(auth1_t *inp) +{ + return inp->slog; +} +size_t +auth1_getlen_clog(const auth1_t *inp) +{ + (void)inp; return 32; +} + +uint8_t +auth1_get_clog(const auth1_t *inp, size_t idx) +{ + trunnel_assert(idx < 32); + return inp->clog[idx]; +} + +int +auth1_set_clog(auth1_t *inp, size_t idx, uint8_t elt) +{ + trunnel_assert(idx < 32); + inp->clog[idx] = elt; + return 0; +} + +uint8_t * +auth1_getarray_clog(auth1_t *inp) +{ + return inp->clog; +} +size_t +auth1_getlen_scert(const auth1_t *inp) +{ + (void)inp; return 32; +} + +uint8_t +auth1_get_scert(const auth1_t *inp, size_t idx) +{ + trunnel_assert(idx < 32); + return inp->scert[idx]; +} + +int +auth1_set_scert(auth1_t *inp, size_t idx, uint8_t elt) +{ + trunnel_assert(idx < 32); + inp->scert[idx] = elt; + return 0; +} + +uint8_t * +auth1_getarray_scert(auth1_t *inp) +{ + return inp->scert; +} +size_t +auth1_getlen_tlssecrets(const auth1_t *inp) +{ + (void)inp; return 32; +} + +uint8_t +auth1_get_tlssecrets(const auth1_t *inp, size_t idx) +{ + trunnel_assert(idx < 32); + return inp->tlssecrets[idx]; +} + +int +auth1_set_tlssecrets(auth1_t *inp, size_t idx, uint8_t elt) +{ + trunnel_assert(idx < 32); + inp->tlssecrets[idx] = elt; + return 0; +} + +uint8_t * +auth1_getarray_tlssecrets(auth1_t *inp) +{ + return inp->tlssecrets; +} +const uint8_t * +auth1_get_end_of_fixed_part(const auth1_t *inp) +{ + return inp->end_of_fixed_part; +} +size_t +auth1_getlen_rand(const auth1_t *inp) +{ + (void)inp; return 24; +} + +uint8_t +auth1_get_rand(const auth1_t *inp, size_t idx) +{ + trunnel_assert(idx < 24); + return inp->rand[idx]; +} + +int +auth1_set_rand(auth1_t *inp, size_t idx, uint8_t elt) +{ + trunnel_assert(idx < 24); + inp->rand[idx] = elt; + return 0; +} + +uint8_t * +auth1_getarray_rand(auth1_t *inp) +{ + return inp->rand; +} +const uint8_t * +auth1_get_end_of_signed(const auth1_t *inp) +{ + return inp->end_of_signed; +} +size_t +auth1_getlen_sig(const auth1_t *inp) +{ + return TRUNNEL_DYNARRAY_LEN(&inp->sig); +} + +uint8_t +auth1_get_sig(auth1_t *inp, size_t idx) +{ + return TRUNNEL_DYNARRAY_GET(&inp->sig, idx); +} + +int +auth1_set_sig(auth1_t *inp, size_t idx, uint8_t elt) +{ + TRUNNEL_DYNARRAY_SET(&inp->sig, idx, elt); + return 0; +} +int +auth1_add_sig(auth1_t *inp, uint8_t elt) +{ + TRUNNEL_DYNARRAY_ADD(uint8_t, &inp->sig, elt, {}); + return 0; + trunnel_alloc_failed: + TRUNNEL_SET_ERROR_CODE(inp); + return -1; +} + +uint8_t * +auth1_getarray_sig(auth1_t *inp) +{ + return inp->sig.elts_; +} +int +auth1_setlen_sig(auth1_t *inp, size_t newlen) +{ + uint8_t *newptr; + newptr = trunnel_dynarray_setlen(&inp->sig.allocated_, + &inp->sig.n_, inp->sig.elts_, newlen, + sizeof(inp->sig.elts_[0]), (trunnel_free_fn_t) NULL, + &inp->trunnel_error_code_); + if (newptr == NULL) + goto trunnel_alloc_failed; + inp->sig.elts_ = newptr; + return 0; + trunnel_alloc_failed: + TRUNNEL_SET_ERROR_CODE(inp); + return -1; +} +const char * +auth1_check(const auth1_t *obj, const auth_ctx_t *auth_ctx_ctx) +{ + if (obj == NULL) + return "Object was NULL"; + if (obj->trunnel_error_code_) + return "A set function failed on this object"; + if (auth_ctx_ctx == NULL) + return "Context was NULL"; + switch (auth_ctx_ctx->is_ed) { + + case 0: + break; + + case 1: + break; + + default: + return "Bad tag for union"; + break; + } + return NULL; +} + +ssize_t +auth1_encoded_len(const auth1_t *obj, const auth_ctx_t *auth_ctx_ctx) +{ + ssize_t result = 0; + + if (NULL != auth1_check(obj, auth_ctx_ctx)) + return -1; + + + /* Length of u8 type[8] */ + result += 8; + + /* Length of u8 cid[32] */ + result += 32; + + /* Length of u8 sid[32] */ + result += 32; + switch (auth_ctx_ctx->is_ed) { + + case 0: + break; + + case 1: + + /* Length of u8 u1_cid_ed[32] */ + result += 32; + + /* Length of u8 u1_sid_ed[32] */ + result += 32; + break; + + default: + trunnel_assert(0); + break; + } + + /* Length of u8 slog[32] */ + result += 32; + + /* Length of u8 clog[32] */ + result += 32; + + /* Length of u8 scert[32] */ + result += 32; + + /* Length of u8 tlssecrets[32] */ + result += 32; + + /* Length of u8 rand[24] */ + result += 24; + + /* Length of u8 sig[] */ + result += TRUNNEL_DYNARRAY_LEN(&obj->sig); + return result; +} +int +auth1_clear_errors(auth1_t *obj) +{ + int r = obj->trunnel_error_code_; + obj->trunnel_error_code_ = 0; + return r; +} +ssize_t +auth1_encode(uint8_t *output, const size_t avail, const auth1_t *obj, const auth_ctx_t *auth_ctx_ctx) +{ + 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 = auth1_encoded_len(obj, auth_ctx_ctx); +#endif + + if (NULL != (msg = auth1_check(obj, auth_ctx_ctx))) + goto check_failed; + +#ifdef TRUNNEL_CHECK_ENCODED_LEN + trunnel_assert(encoded_len >= 0); +#endif + + /* Encode u8 type[8] */ + trunnel_assert(written <= avail); + if (avail - written < 8) + goto truncated; + memcpy(ptr, obj->type, 8); + written += 8; ptr += 8; + + /* Encode u8 cid[32] */ + trunnel_assert(written <= avail); + if (avail - written < 32) + goto truncated; + memcpy(ptr, obj->cid, 32); + written += 32; ptr += 32; + + /* Encode u8 sid[32] */ + trunnel_assert(written <= avail); + if (avail - written < 32) + goto truncated; + memcpy(ptr, obj->sid, 32); + written += 32; ptr += 32; + + /* Encode union u1[auth_ctx.is_ed] */ + trunnel_assert(written <= avail); + switch (auth_ctx_ctx->is_ed) { + + case 0: + break; + + case 1: + + /* Encode u8 u1_cid_ed[32] */ + trunnel_assert(written <= avail); + if (avail - written < 32) + goto truncated; + memcpy(ptr, obj->u1_cid_ed, 32); + written += 32; ptr += 32; + + /* Encode u8 u1_sid_ed[32] */ + trunnel_assert(written <= avail); + if (avail - written < 32) + goto truncated; + memcpy(ptr, obj->u1_sid_ed, 32); + written += 32; ptr += 32; + break; + + default: + trunnel_assert(0); + break; + } + + /* Encode u8 slog[32] */ + trunnel_assert(written <= avail); + if (avail - written < 32) + goto truncated; + memcpy(ptr, obj->slog, 32); + written += 32; ptr += 32; + + /* Encode u8 clog[32] */ + trunnel_assert(written <= avail); + if (avail - written < 32) + goto truncated; + memcpy(ptr, obj->clog, 32); + written += 32; ptr += 32; + + /* Encode u8 scert[32] */ + trunnel_assert(written <= avail); + if (avail - written < 32) + goto truncated; + memcpy(ptr, obj->scert, 32); + written += 32; ptr += 32; + + /* Encode u8 tlssecrets[32] */ + trunnel_assert(written <= avail); + if (avail - written < 32) + goto truncated; + memcpy(ptr, obj->tlssecrets, 32); + written += 32; ptr += 32; + + /* Encode u8 rand[24] */ + trunnel_assert(written <= avail); + if (avail - written < 24) + goto truncated; + memcpy(ptr, obj->rand, 24); + written += 24; ptr += 24; + + /* Encode u8 sig[] */ + { + size_t elt_len = TRUNNEL_DYNARRAY_LEN(&obj->sig); + trunnel_assert(written <= avail); + if (avail - written < elt_len) + goto truncated; + memcpy(ptr, obj->sig.elts_, elt_len); + written += elt_len; ptr += elt_len; + } + + + 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 auth1_parse(), but do not allocate the output object. + */ +static ssize_t +auth1_parse_into(auth1_t *obj, const uint8_t *input, const size_t len_in, const auth_ctx_t *auth_ctx_ctx) +{ + const uint8_t *ptr = input; + size_t remaining = len_in; + ssize_t result = 0; + (void)result; + if (auth_ctx_ctx == NULL) + return -1; + + /* Parse u8 type[8] */ + CHECK_REMAINING(8, truncated); + memcpy(obj->type, ptr, 8); + remaining -= 8; ptr += 8; + + /* Parse u8 cid[32] */ + CHECK_REMAINING(32, truncated); + memcpy(obj->cid, ptr, 32); + remaining -= 32; ptr += 32; + + /* Parse u8 sid[32] */ + CHECK_REMAINING(32, truncated); + memcpy(obj->sid, ptr, 32); + remaining -= 32; ptr += 32; + + /* Parse union u1[auth_ctx.is_ed] */ + switch (auth_ctx_ctx->is_ed) { + + case 0: + break; + + case 1: + + /* Parse u8 u1_cid_ed[32] */ + CHECK_REMAINING(32, truncated); + memcpy(obj->u1_cid_ed, ptr, 32); + remaining -= 32; ptr += 32; + + /* Parse u8 u1_sid_ed[32] */ + CHECK_REMAINING(32, truncated); + memcpy(obj->u1_sid_ed, ptr, 32); + remaining -= 32; ptr += 32; + break; + + default: + goto fail; + break; + } + + /* Parse u8 slog[32] */ + CHECK_REMAINING(32, truncated); + memcpy(obj->slog, ptr, 32); + remaining -= 32; ptr += 32; + + /* Parse u8 clog[32] */ + CHECK_REMAINING(32, truncated); + memcpy(obj->clog, ptr, 32); + remaining -= 32; ptr += 32; + + /* Parse u8 scert[32] */ + CHECK_REMAINING(32, truncated); + memcpy(obj->scert, ptr, 32); + remaining -= 32; ptr += 32; + + /* Parse u8 tlssecrets[32] */ + CHECK_REMAINING(32, truncated); + memcpy(obj->tlssecrets, ptr, 32); + remaining -= 32; ptr += 32; + obj->end_of_fixed_part = ptr; + + /* Parse u8 rand[24] */ + CHECK_REMAINING(24, truncated); + memcpy(obj->rand, ptr, 24); + remaining -= 24; ptr += 24; + obj->end_of_signed = ptr; + + /* Parse u8 sig[] */ + TRUNNEL_DYNARRAY_EXPAND(uint8_t, &obj->sig, remaining, {}); + obj->sig.n_ = remaining; + memcpy(obj->sig.elts_, ptr, remaining); + ptr += remaining; remaining -= remaining; + 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 +auth1_parse(auth1_t **output, const uint8_t *input, const size_t len_in, const auth_ctx_t *auth_ctx_ctx) +{ + ssize_t result; + *output = auth1_new(); + if (NULL == *output) + return -1; + result = auth1_parse_into(*output, input, len_in, auth_ctx_ctx); + if (result < 0) { + auth1_free(*output); + *output = NULL; + } + return result; +} +certs_cell_t * +certs_cell_new(void) +{ + certs_cell_t *val = trunnel_calloc(1, sizeof(certs_cell_t)); + if (NULL == val) + return NULL; + return val; +} + +/** Release all storage held inside 'obj', but do not free 'obj'. + */ +static void +certs_cell_clear(certs_cell_t *obj) +{ + (void) obj; + { + + unsigned idx; + for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->certs); ++idx) { + certs_cell_cert_free(TRUNNEL_DYNARRAY_GET(&obj->certs, idx)); + } + } + TRUNNEL_DYNARRAY_WIPE(&obj->certs); + TRUNNEL_DYNARRAY_CLEAR(&obj->certs); +} + +void +certs_cell_free(certs_cell_t *obj) +{ + if (obj == NULL) + return; + certs_cell_clear(obj); + trunnel_memwipe(obj, sizeof(certs_cell_t)); + trunnel_free_(obj); +} + +uint8_t +certs_cell_get_n_certs(certs_cell_t *inp) +{ + return inp->n_certs; +} +int +certs_cell_set_n_certs(certs_cell_t *inp, uint8_t val) +{ + inp->n_certs = val; + return 0; +} +size_t +certs_cell_getlen_certs(const certs_cell_t *inp) +{ + return TRUNNEL_DYNARRAY_LEN(&inp->certs); +} + +struct certs_cell_cert_st * +certs_cell_get_certs(certs_cell_t *inp, size_t idx) +{ + return TRUNNEL_DYNARRAY_GET(&inp->certs, idx); +} + +int +certs_cell_set_certs(certs_cell_t *inp, size_t idx, struct certs_cell_cert_st * elt) +{ + certs_cell_cert_t *oldval = TRUNNEL_DYNARRAY_GET(&inp->certs, idx); + if (oldval && oldval != elt) + certs_cell_cert_free(oldval); + return certs_cell_set0_certs(inp, idx, elt); +} +int +certs_cell_set0_certs(certs_cell_t *inp, size_t idx, struct certs_cell_cert_st * elt) +{ + TRUNNEL_DYNARRAY_SET(&inp->certs, idx, elt); + return 0; +} +int +certs_cell_add_certs(certs_cell_t *inp, struct certs_cell_cert_st * elt) +{ +#if SIZE_MAX >= UINT8_MAX + if (inp->certs.n_ == UINT8_MAX) + goto trunnel_alloc_failed; +#endif + TRUNNEL_DYNARRAY_ADD(struct certs_cell_cert_st *, &inp->certs, elt, {}); + return 0; + trunnel_alloc_failed: + TRUNNEL_SET_ERROR_CODE(inp); + return -1; +} + +struct certs_cell_cert_st * * +certs_cell_getarray_certs(certs_cell_t *inp) +{ + return inp->certs.elts_; +} +int +certs_cell_setlen_certs(certs_cell_t *inp, size_t newlen) +{ + struct certs_cell_cert_st * *newptr; +#if UINT8_MAX < SIZE_MAX + if (newlen > UINT8_MAX) + goto trunnel_alloc_failed; +#endif + newptr = trunnel_dynarray_setlen(&inp->certs.allocated_, + &inp->certs.n_, inp->certs.elts_, newlen, + sizeof(inp->certs.elts_[0]), (trunnel_free_fn_t) certs_cell_cert_free, + &inp->trunnel_error_code_); + if (newptr == NULL) + goto trunnel_alloc_failed; + inp->certs.elts_ = newptr; + return 0; + trunnel_alloc_failed: + TRUNNEL_SET_ERROR_CODE(inp); + return -1; +} +const char * +certs_cell_check(const certs_cell_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->certs); ++idx) { + if (NULL != (msg = certs_cell_cert_check(TRUNNEL_DYNARRAY_GET(&obj->certs, idx)))) + return msg; + } + } + if (TRUNNEL_DYNARRAY_LEN(&obj->certs) != obj->n_certs) + return "Length mismatch for certs"; + return NULL; +} + +ssize_t +certs_cell_encoded_len(const certs_cell_t *obj) +{ + ssize_t result = 0; + + if (NULL != certs_cell_check(obj)) + return -1; + + + /* Length of u8 n_certs */ + result += 1; + + /* Length of struct certs_cell_cert certs[n_certs] */ + { + + unsigned idx; + for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->certs); ++idx) { + result += certs_cell_cert_encoded_len(TRUNNEL_DYNARRAY_GET(&obj->certs, idx)); + } + } + return result; +} +int +certs_cell_clear_errors(certs_cell_t *obj) +{ + int r = obj->trunnel_error_code_; + obj->trunnel_error_code_ = 0; + return r; +} +ssize_t +certs_cell_encode(uint8_t *output, const size_t avail, const certs_cell_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 = certs_cell_encoded_len(obj); +#endif + + if (NULL != (msg = certs_cell_check(obj))) + goto check_failed; + +#ifdef TRUNNEL_CHECK_ENCODED_LEN + trunnel_assert(encoded_len >= 0); +#endif + + /* Encode u8 n_certs */ + trunnel_assert(written <= avail); + if (avail - written < 1) + goto truncated; + trunnel_set_uint8(ptr, (obj->n_certs)); + written += 1; ptr += 1; + + /* Encode struct certs_cell_cert certs[n_certs] */ + { + + unsigned idx; + for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->certs); ++idx) { + trunnel_assert(written <= avail); + result = certs_cell_cert_encode(ptr, avail - written, TRUNNEL_DYNARRAY_GET(&obj->certs, 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 certs_cell_parse(), but do not allocate the output object. + */ +static ssize_t +certs_cell_parse_into(certs_cell_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_certs */ + CHECK_REMAINING(1, truncated); + obj->n_certs = (trunnel_get_uint8(ptr)); + remaining -= 1; ptr += 1; + + /* Parse struct certs_cell_cert certs[n_certs] */ + TRUNNEL_DYNARRAY_EXPAND(certs_cell_cert_t *, &obj->certs, obj->n_certs, {}); + { + certs_cell_cert_t * elt; + unsigned idx; + for (idx = 0; idx < obj->n_certs; ++idx) { + result = certs_cell_cert_parse(&elt, ptr, remaining); + if (result < 0) + goto relay_fail; + trunnel_assert((size_t)result <= remaining); + remaining -= result; ptr += result; + TRUNNEL_DYNARRAY_ADD(certs_cell_cert_t *, &obj->certs, elt, {certs_cell_cert_free(elt);}); + } + } + trunnel_assert(ptr + remaining == input + len_in); + return len_in - remaining; + + truncated: + return -2; + relay_fail: + if (result >= 0) result = -1; + return result; + trunnel_alloc_failed: + return -1; +} + +ssize_t +certs_cell_parse(certs_cell_t **output, const uint8_t *input, const size_t len_in) +{ + ssize_t result; + *output = certs_cell_new(); + if (NULL == *output) + return -1; + result = certs_cell_parse_into(*output, input, len_in); + if (result < 0) { + certs_cell_free(*output); + *output = NULL; + } + return result; +} diff --git a/src/trunnel/link_handshake.h b/src/trunnel/link_handshake.h new file mode 100644 index 0000000000..109fe8d065 --- /dev/null +++ b/src/trunnel/link_handshake.h @@ -0,0 +1,654 @@ +/* link_handshake.h -- generated by by Trunnel v1.4-pre. + * https://gitweb.torproject.org/trunnel.git + * You probably shouldn't edit this file. + */ +#ifndef TRUNNEL_LINK_HANDSHAKE_H +#define TRUNNEL_LINK_HANDSHAKE_H + +#include <stdint.h> +#include "trunnel.h" + +#define CERTTYPE_RSA1024_ID_LINK 1 +#define CERTTYPE_RSA1024_ID_ID 2 +#define CERTTYPE_RSA1024_ID_AUTH 3 +#define CERTTYPE_ED_ID_SIGN 4 +#define CERTTYPE_ED_SIGN_LINK 5 +#define CERTTYPE_ED_SIGN_AUTH 6 +#define CERTTYPE_RSA1024_ID_EDID 7 +#if !defined(TRUNNEL_OPAQUE) && !defined(TRUNNEL_OPAQUE_AUTH_CHALLENGE_CELL) +struct auth_challenge_cell_st { + uint8_t challenge[32]; + uint16_t n_methods; + TRUNNEL_DYNARRAY_HEAD(, uint16_t) methods; + uint8_t trunnel_error_code_; +}; +#endif +typedef struct auth_challenge_cell_st auth_challenge_cell_t; +#if !defined(TRUNNEL_OPAQUE) && !defined(TRUNNEL_OPAQUE_AUTH_CTX) +struct auth_ctx_st { + uint8_t is_ed; + uint8_t trunnel_error_code_; +}; +#endif +typedef struct auth_ctx_st auth_ctx_t; +#if !defined(TRUNNEL_OPAQUE) && !defined(TRUNNEL_OPAQUE_CERTS_CELL_CERT) +struct certs_cell_cert_st { + uint8_t cert_type; + uint16_t cert_len; + TRUNNEL_DYNARRAY_HEAD(, uint8_t) body; + uint8_t trunnel_error_code_; +}; +#endif +typedef struct certs_cell_cert_st certs_cell_cert_t; +#if !defined(TRUNNEL_OPAQUE) && !defined(TRUNNEL_OPAQUE_RSA_ED_CROSSCERT) +struct rsa_ed_crosscert_st { + uint8_t ed_key[32]; + uint32_t expiration; + const uint8_t *end_of_signed; + uint8_t sig_len; + TRUNNEL_DYNARRAY_HEAD(, uint8_t) sig; + uint8_t trunnel_error_code_; +}; +#endif +typedef struct rsa_ed_crosscert_st rsa_ed_crosscert_t; +#if !defined(TRUNNEL_OPAQUE) && !defined(TRUNNEL_OPAQUE_AUTH1) +struct auth1_st { + uint8_t type[8]; + uint8_t cid[32]; + uint8_t sid[32]; + uint8_t u1_cid_ed[32]; + uint8_t u1_sid_ed[32]; + uint8_t slog[32]; + uint8_t clog[32]; + uint8_t scert[32]; + uint8_t tlssecrets[32]; + const uint8_t *end_of_fixed_part; + uint8_t rand[24]; + const uint8_t *end_of_signed; + TRUNNEL_DYNARRAY_HEAD(, uint8_t) sig; + uint8_t trunnel_error_code_; +}; +#endif +typedef struct auth1_st auth1_t; +#if !defined(TRUNNEL_OPAQUE) && !defined(TRUNNEL_OPAQUE_CERTS_CELL) +struct certs_cell_st { + uint8_t n_certs; + TRUNNEL_DYNARRAY_HEAD(, struct certs_cell_cert_st *) certs; + uint8_t trunnel_error_code_; +}; +#endif +typedef struct certs_cell_st certs_cell_t; +/** Return a newly allocated auth_challenge_cell with all elements set + * to zero. + */ +auth_challenge_cell_t *auth_challenge_cell_new(void); +/** Release all storage held by the auth_challenge_cell in 'victim'. + * (Do nothing if 'victim' is NULL.) + */ +void auth_challenge_cell_free(auth_challenge_cell_t *victim); +/** Try to parse a auth_challenge_cell from the buffer in 'input', + * using up to 'len_in' bytes from the input buffer. On success, + * return the number of bytes consumed and set *output to the newly + * allocated auth_challenge_cell_t. On failure, return -2 if the input + * appears truncated, and -1 if the input is otherwise invalid. + */ +ssize_t auth_challenge_cell_parse(auth_challenge_cell_t **output, const uint8_t *input, const size_t len_in); +/** Return the number of bytes we expect to need to encode the + * auth_challenge_cell in 'obj'. On failure, return a negative value. + * Note that this value may be an overestimate, and can even be an + * underestimate for certain unencodeable objects. + */ +ssize_t auth_challenge_cell_encoded_len(const auth_challenge_cell_t *obj); +/** Try to encode the auth_challenge_cell from 'input' into the buffer + * at 'output', using up to 'avail' bytes of the output buffer. On + * success, return the number of bytes used. On failure, return -2 if + * the buffer was not long enough, and -1 if the input was invalid. + */ +ssize_t auth_challenge_cell_encode(uint8_t *output, const size_t avail, const auth_challenge_cell_t *input); +/** Check whether the internal state of the auth_challenge_cell in + * 'obj' is consistent. Return NULL if it is, and a short message if + * it is not. + */ +const char *auth_challenge_cell_check(const auth_challenge_cell_t *obj); +/** Clear any errors that were set on the object 'obj' by its setter + * functions. Return true iff errors were cleared. + */ +int auth_challenge_cell_clear_errors(auth_challenge_cell_t *obj); +/** Return the (constant) length of the array holding the challenge + * field of the auth_challenge_cell_t in 'inp'. + */ +size_t auth_challenge_cell_getlen_challenge(const auth_challenge_cell_t *inp); +/** Return the element at position 'idx' of the fixed array field + * challenge of the auth_challenge_cell_t in 'inp'. + */ +uint8_t auth_challenge_cell_get_challenge(const auth_challenge_cell_t *inp, size_t idx); +/** Change the element at position 'idx' of the fixed array field + * challenge of the auth_challenge_cell_t in 'inp', so that it will + * hold the value 'elt'. + */ +int auth_challenge_cell_set_challenge(auth_challenge_cell_t *inp, size_t idx, uint8_t elt); +/** Return a pointer to the 32-element array field challenge of 'inp'. + */ +uint8_t * auth_challenge_cell_getarray_challenge(auth_challenge_cell_t *inp); +/** Return the value of the n_methods field of the + * auth_challenge_cell_t in 'inp' + */ +uint16_t auth_challenge_cell_get_n_methods(auth_challenge_cell_t *inp); +/** Set the value of the n_methods field of the auth_challenge_cell_t + * in 'inp' to 'val'. Return 0 on success; return -1 and set the error + * code on 'inp' on failure. + */ +int auth_challenge_cell_set_n_methods(auth_challenge_cell_t *inp, uint16_t val); +/** Return the length of the dynamic array holding the methods field + * of the auth_challenge_cell_t in 'inp'. + */ +size_t auth_challenge_cell_getlen_methods(const auth_challenge_cell_t *inp); +/** Return the element at position 'idx' of the dynamic array field + * methods of the auth_challenge_cell_t in 'inp'. + */ +uint16_t auth_challenge_cell_get_methods(auth_challenge_cell_t *inp, size_t idx); +/** Change the element at position 'idx' of the dynamic array field + * methods of the auth_challenge_cell_t in 'inp', so that it will hold + * the value 'elt'. + */ +int auth_challenge_cell_set_methods(auth_challenge_cell_t *inp, size_t idx, uint16_t elt); +/** Append a new element 'elt' to the dynamic array field methods of + * the auth_challenge_cell_t in 'inp'. + */ +int auth_challenge_cell_add_methods(auth_challenge_cell_t *inp, uint16_t elt); +/** Return a pointer to the variable-length array field methods of + * 'inp'. + */ +uint16_t * auth_challenge_cell_getarray_methods(auth_challenge_cell_t *inp); +/** Change the length of the variable-length array field methods of + * 'inp' to 'newlen'.Fill extra elements with 0. Return 0 on success; + * return -1 and set the error code on 'inp' on failure. + */ +int auth_challenge_cell_setlen_methods(auth_challenge_cell_t *inp, size_t newlen); +/** Return a newly allocated auth_ctx with all elements set to zero. + */ +auth_ctx_t *auth_ctx_new(void); +/** Release all storage held by the auth_ctx in 'victim'. (Do nothing + * if 'victim' is NULL.) + */ +void auth_ctx_free(auth_ctx_t *victim); +/** Return the value of the is_ed field of the auth_ctx_t in 'inp' + */ +uint8_t auth_ctx_get_is_ed(auth_ctx_t *inp); +/** Set the value of the is_ed field of the auth_ctx_t in 'inp' to + * 'val'. Return 0 on success; return -1 and set the error code on + * 'inp' on failure. + */ +int auth_ctx_set_is_ed(auth_ctx_t *inp, uint8_t val); +/** Return a newly allocated certs_cell_cert with all elements set to + * zero. + */ +certs_cell_cert_t *certs_cell_cert_new(void); +/** Release all storage held by the certs_cell_cert in 'victim'. (Do + * nothing if 'victim' is NULL.) + */ +void certs_cell_cert_free(certs_cell_cert_t *victim); +/** Try to parse a certs_cell_cert from the buffer in 'input', using + * up to 'len_in' bytes from the input buffer. On success, return the + * number of bytes consumed and set *output to the newly allocated + * certs_cell_cert_t. On failure, return -2 if the input appears + * truncated, and -1 if the input is otherwise invalid. + */ +ssize_t certs_cell_cert_parse(certs_cell_cert_t **output, const uint8_t *input, const size_t len_in); +/** Return the number of bytes we expect to need to encode the + * certs_cell_cert in 'obj'. On failure, return a negative value. Note + * that this value may be an overestimate, and can even be an + * underestimate for certain unencodeable objects. + */ +ssize_t certs_cell_cert_encoded_len(const certs_cell_cert_t *obj); +/** Try to encode the certs_cell_cert from 'input' into the buffer at + * 'output', using up to 'avail' bytes of the output buffer. On + * success, return the number of bytes used. On failure, return -2 if + * the buffer was not long enough, and -1 if the input was invalid. + */ +ssize_t certs_cell_cert_encode(uint8_t *output, const size_t avail, const certs_cell_cert_t *input); +/** Check whether the internal state of the certs_cell_cert in 'obj' + * is consistent. Return NULL if it is, and a short message if it is + * not. + */ +const char *certs_cell_cert_check(const certs_cell_cert_t *obj); +/** Clear any errors that were set on the object 'obj' by its setter + * functions. Return true iff errors were cleared. + */ +int certs_cell_cert_clear_errors(certs_cell_cert_t *obj); +/** Return the value of the cert_type field of the certs_cell_cert_t + * in 'inp' + */ +uint8_t certs_cell_cert_get_cert_type(certs_cell_cert_t *inp); +/** Set the value of the cert_type field of the certs_cell_cert_t in + * 'inp' to 'val'. Return 0 on success; return -1 and set the error + * code on 'inp' on failure. + */ +int certs_cell_cert_set_cert_type(certs_cell_cert_t *inp, uint8_t val); +/** Return the value of the cert_len field of the certs_cell_cert_t in + * 'inp' + */ +uint16_t certs_cell_cert_get_cert_len(certs_cell_cert_t *inp); +/** Set the value of the cert_len field of the certs_cell_cert_t in + * 'inp' to 'val'. Return 0 on success; return -1 and set the error + * code on 'inp' on failure. + */ +int certs_cell_cert_set_cert_len(certs_cell_cert_t *inp, uint16_t val); +/** Return the length of the dynamic array holding the body field of + * the certs_cell_cert_t in 'inp'. + */ +size_t certs_cell_cert_getlen_body(const certs_cell_cert_t *inp); +/** Return the element at position 'idx' of the dynamic array field + * body of the certs_cell_cert_t in 'inp'. + */ +uint8_t certs_cell_cert_get_body(certs_cell_cert_t *inp, size_t idx); +/** Change the element at position 'idx' of the dynamic array field + * body of the certs_cell_cert_t in 'inp', so that it will hold the + * value 'elt'. + */ +int certs_cell_cert_set_body(certs_cell_cert_t *inp, size_t idx, uint8_t elt); +/** Append a new element 'elt' to the dynamic array field body of the + * certs_cell_cert_t in 'inp'. + */ +int certs_cell_cert_add_body(certs_cell_cert_t *inp, uint8_t elt); +/** Return a pointer to the variable-length array field body of 'inp'. + */ +uint8_t * certs_cell_cert_getarray_body(certs_cell_cert_t *inp); +/** Change the length of the variable-length array field body of 'inp' + * to 'newlen'.Fill extra elements with 0. Return 0 on success; return + * -1 and set the error code on 'inp' on failure. + */ +int certs_cell_cert_setlen_body(certs_cell_cert_t *inp, size_t newlen); +/** Return a newly allocated rsa_ed_crosscert with all elements set to + * zero. + */ +rsa_ed_crosscert_t *rsa_ed_crosscert_new(void); +/** Release all storage held by the rsa_ed_crosscert in 'victim'. (Do + * nothing if 'victim' is NULL.) + */ +void rsa_ed_crosscert_free(rsa_ed_crosscert_t *victim); +/** Try to parse a rsa_ed_crosscert from the buffer in 'input', using + * up to 'len_in' bytes from the input buffer. On success, return the + * number of bytes consumed and set *output to the newly allocated + * rsa_ed_crosscert_t. On failure, return -2 if the input appears + * truncated, and -1 if the input is otherwise invalid. + */ +ssize_t rsa_ed_crosscert_parse(rsa_ed_crosscert_t **output, const uint8_t *input, const size_t len_in); +/** Return the number of bytes we expect to need to encode the + * rsa_ed_crosscert in 'obj'. On failure, return a negative value. + * Note that this value may be an overestimate, and can even be an + * underestimate for certain unencodeable objects. + */ +ssize_t rsa_ed_crosscert_encoded_len(const rsa_ed_crosscert_t *obj); +/** Try to encode the rsa_ed_crosscert from 'input' into the buffer at + * 'output', using up to 'avail' bytes of the output buffer. On + * success, return the number of bytes used. On failure, return -2 if + * the buffer was not long enough, and -1 if the input was invalid. + */ +ssize_t rsa_ed_crosscert_encode(uint8_t *output, const size_t avail, const rsa_ed_crosscert_t *input); +/** Check whether the internal state of the rsa_ed_crosscert in 'obj' + * is consistent. Return NULL if it is, and a short message if it is + * not. + */ +const char *rsa_ed_crosscert_check(const rsa_ed_crosscert_t *obj); +/** Clear any errors that were set on the object 'obj' by its setter + * functions. Return true iff errors were cleared. + */ +int rsa_ed_crosscert_clear_errors(rsa_ed_crosscert_t *obj); +/** Return the (constant) length of the array holding the ed_key field + * of the rsa_ed_crosscert_t in 'inp'. + */ +size_t rsa_ed_crosscert_getlen_ed_key(const rsa_ed_crosscert_t *inp); +/** Return the element at position 'idx' of the fixed array field + * ed_key of the rsa_ed_crosscert_t in 'inp'. + */ +uint8_t rsa_ed_crosscert_get_ed_key(const rsa_ed_crosscert_t *inp, size_t idx); +/** Change the element at position 'idx' of the fixed array field + * ed_key of the rsa_ed_crosscert_t in 'inp', so that it will hold the + * value 'elt'. + */ +int rsa_ed_crosscert_set_ed_key(rsa_ed_crosscert_t *inp, size_t idx, uint8_t elt); +/** Return a pointer to the 32-element array field ed_key of 'inp'. + */ +uint8_t * rsa_ed_crosscert_getarray_ed_key(rsa_ed_crosscert_t *inp); +/** Return the value of the expiration field of the rsa_ed_crosscert_t + * in 'inp' + */ +uint32_t rsa_ed_crosscert_get_expiration(rsa_ed_crosscert_t *inp); +/** Set the value of the expiration field of the rsa_ed_crosscert_t in + * 'inp' to 'val'. Return 0 on success; return -1 and set the error + * code on 'inp' on failure. + */ +int rsa_ed_crosscert_set_expiration(rsa_ed_crosscert_t *inp, uint32_t val); +/** Return the position for end_of_signed when we parsed this object + */ +const uint8_t * rsa_ed_crosscert_get_end_of_signed(const rsa_ed_crosscert_t *inp); +/** Return the value of the sig_len field of the rsa_ed_crosscert_t in + * 'inp' + */ +uint8_t rsa_ed_crosscert_get_sig_len(rsa_ed_crosscert_t *inp); +/** Set the value of the sig_len field of the rsa_ed_crosscert_t in + * 'inp' to 'val'. Return 0 on success; return -1 and set the error + * code on 'inp' on failure. + */ +int rsa_ed_crosscert_set_sig_len(rsa_ed_crosscert_t *inp, uint8_t val); +/** Return the length of the dynamic array holding the sig field of + * the rsa_ed_crosscert_t in 'inp'. + */ +size_t rsa_ed_crosscert_getlen_sig(const rsa_ed_crosscert_t *inp); +/** Return the element at position 'idx' of the dynamic array field + * sig of the rsa_ed_crosscert_t in 'inp'. + */ +uint8_t rsa_ed_crosscert_get_sig(rsa_ed_crosscert_t *inp, size_t idx); +/** Change the element at position 'idx' of the dynamic array field + * sig of the rsa_ed_crosscert_t in 'inp', so that it will hold the + * value 'elt'. + */ +int rsa_ed_crosscert_set_sig(rsa_ed_crosscert_t *inp, size_t idx, uint8_t elt); +/** Append a new element 'elt' to the dynamic array field sig of the + * rsa_ed_crosscert_t in 'inp'. + */ +int rsa_ed_crosscert_add_sig(rsa_ed_crosscert_t *inp, uint8_t elt); +/** Return a pointer to the variable-length array field sig of 'inp'. + */ +uint8_t * rsa_ed_crosscert_getarray_sig(rsa_ed_crosscert_t *inp); +/** Change the length of the variable-length array field sig of 'inp' + * to 'newlen'.Fill extra elements with 0. Return 0 on success; return + * -1 and set the error code on 'inp' on failure. + */ +int rsa_ed_crosscert_setlen_sig(rsa_ed_crosscert_t *inp, size_t newlen); +/** Return a newly allocated auth1 with all elements set to zero. + */ +auth1_t *auth1_new(void); +/** Release all storage held by the auth1 in 'victim'. (Do nothing if + * 'victim' is NULL.) + */ +void auth1_free(auth1_t *victim); +/** Try to parse a auth1 from the buffer in 'input', using up to + * 'len_in' bytes from the input buffer. On success, return the number + * of bytes consumed and set *output to the newly allocated auth1_t. + * On failure, return -2 if the input appears truncated, and -1 if the + * input is otherwise invalid. + */ +ssize_t auth1_parse(auth1_t **output, const uint8_t *input, const size_t len_in, const auth_ctx_t *auth_ctx_ctx); +/** Return the number of bytes we expect to need to encode the auth1 + * in 'obj'. On failure, return a negative value. Note that this value + * may be an overestimate, and can even be an underestimate for + * certain unencodeable objects. + */ +ssize_t auth1_encoded_len(const auth1_t *obj, const auth_ctx_t *auth_ctx_ctx); +/** Try to encode the auth1 from 'input' into the buffer at 'output', + * using up to 'avail' bytes of the output buffer. On success, return + * the number of bytes used. On failure, return -2 if the buffer was + * not long enough, and -1 if the input was invalid. + */ +ssize_t auth1_encode(uint8_t *output, const size_t avail, const auth1_t *input, const auth_ctx_t *auth_ctx_ctx); +/** Check whether the internal state of the auth1 in 'obj' is + * consistent. Return NULL if it is, and a short message if it is not. + */ +const char *auth1_check(const auth1_t *obj, const auth_ctx_t *auth_ctx_ctx); +/** Clear any errors that were set on the object 'obj' by its setter + * functions. Return true iff errors were cleared. + */ +int auth1_clear_errors(auth1_t *obj); +/** Return the (constant) length of the array holding the type field + * of the auth1_t in 'inp'. + */ +size_t auth1_getlen_type(const auth1_t *inp); +/** Return the element at position 'idx' of the fixed array field type + * of the auth1_t in 'inp'. + */ +uint8_t auth1_get_type(const auth1_t *inp, size_t idx); +/** Change the element at position 'idx' of the fixed array field type + * of the auth1_t in 'inp', so that it will hold the value 'elt'. + */ +int auth1_set_type(auth1_t *inp, size_t idx, uint8_t elt); +/** Return a pointer to the 8-element array field type of 'inp'. + */ +uint8_t * auth1_getarray_type(auth1_t *inp); +/** Return the (constant) length of the array holding the cid field of + * the auth1_t in 'inp'. + */ +size_t auth1_getlen_cid(const auth1_t *inp); +/** Return the element at position 'idx' of the fixed array field cid + * of the auth1_t in 'inp'. + */ +uint8_t auth1_get_cid(const auth1_t *inp, size_t idx); +/** Change the element at position 'idx' of the fixed array field cid + * of the auth1_t in 'inp', so that it will hold the value 'elt'. + */ +int auth1_set_cid(auth1_t *inp, size_t idx, uint8_t elt); +/** Return a pointer to the 32-element array field cid of 'inp'. + */ +uint8_t * auth1_getarray_cid(auth1_t *inp); +/** Return the (constant) length of the array holding the sid field of + * the auth1_t in 'inp'. + */ +size_t auth1_getlen_sid(const auth1_t *inp); +/** Return the element at position 'idx' of the fixed array field sid + * of the auth1_t in 'inp'. + */ +uint8_t auth1_get_sid(const auth1_t *inp, size_t idx); +/** Change the element at position 'idx' of the fixed array field sid + * of the auth1_t in 'inp', so that it will hold the value 'elt'. + */ +int auth1_set_sid(auth1_t *inp, size_t idx, uint8_t elt); +/** Return a pointer to the 32-element array field sid of 'inp'. + */ +uint8_t * auth1_getarray_sid(auth1_t *inp); +/** Return the (constant) length of the array holding the u1_cid_ed + * field of the auth1_t in 'inp'. + */ +size_t auth1_getlen_u1_cid_ed(const auth1_t *inp); +/** Return the element at position 'idx' of the fixed array field + * u1_cid_ed of the auth1_t in 'inp'. + */ +uint8_t auth1_get_u1_cid_ed(const auth1_t *inp, size_t idx); +/** Change the element at position 'idx' of the fixed array field + * u1_cid_ed of the auth1_t in 'inp', so that it will hold the value + * 'elt'. + */ +int auth1_set_u1_cid_ed(auth1_t *inp, size_t idx, uint8_t elt); +/** Return a pointer to the 32-element array field u1_cid_ed of 'inp'. + */ +uint8_t * auth1_getarray_u1_cid_ed(auth1_t *inp); +/** Return the (constant) length of the array holding the u1_sid_ed + * field of the auth1_t in 'inp'. + */ +size_t auth1_getlen_u1_sid_ed(const auth1_t *inp); +/** Return the element at position 'idx' of the fixed array field + * u1_sid_ed of the auth1_t in 'inp'. + */ +uint8_t auth1_get_u1_sid_ed(const auth1_t *inp, size_t idx); +/** Change the element at position 'idx' of the fixed array field + * u1_sid_ed of the auth1_t in 'inp', so that it will hold the value + * 'elt'. + */ +int auth1_set_u1_sid_ed(auth1_t *inp, size_t idx, uint8_t elt); +/** Return a pointer to the 32-element array field u1_sid_ed of 'inp'. + */ +uint8_t * auth1_getarray_u1_sid_ed(auth1_t *inp); +/** Return the (constant) length of the array holding the slog field + * of the auth1_t in 'inp'. + */ +size_t auth1_getlen_slog(const auth1_t *inp); +/** Return the element at position 'idx' of the fixed array field slog + * of the auth1_t in 'inp'. + */ +uint8_t auth1_get_slog(const auth1_t *inp, size_t idx); +/** Change the element at position 'idx' of the fixed array field slog + * of the auth1_t in 'inp', so that it will hold the value 'elt'. + */ +int auth1_set_slog(auth1_t *inp, size_t idx, uint8_t elt); +/** Return a pointer to the 32-element array field slog of 'inp'. + */ +uint8_t * auth1_getarray_slog(auth1_t *inp); +/** Return the (constant) length of the array holding the clog field + * of the auth1_t in 'inp'. + */ +size_t auth1_getlen_clog(const auth1_t *inp); +/** Return the element at position 'idx' of the fixed array field clog + * of the auth1_t in 'inp'. + */ +uint8_t auth1_get_clog(const auth1_t *inp, size_t idx); +/** Change the element at position 'idx' of the fixed array field clog + * of the auth1_t in 'inp', so that it will hold the value 'elt'. + */ +int auth1_set_clog(auth1_t *inp, size_t idx, uint8_t elt); +/** Return a pointer to the 32-element array field clog of 'inp'. + */ +uint8_t * auth1_getarray_clog(auth1_t *inp); +/** Return the (constant) length of the array holding the scert field + * of the auth1_t in 'inp'. + */ +size_t auth1_getlen_scert(const auth1_t *inp); +/** Return the element at position 'idx' of the fixed array field + * scert of the auth1_t in 'inp'. + */ +uint8_t auth1_get_scert(const auth1_t *inp, size_t idx); +/** Change the element at position 'idx' of the fixed array field + * scert of the auth1_t in 'inp', so that it will hold the value + * 'elt'. + */ +int auth1_set_scert(auth1_t *inp, size_t idx, uint8_t elt); +/** Return a pointer to the 32-element array field scert of 'inp'. + */ +uint8_t * auth1_getarray_scert(auth1_t *inp); +/** Return the (constant) length of the array holding the tlssecrets + * field of the auth1_t in 'inp'. + */ +size_t auth1_getlen_tlssecrets(const auth1_t *inp); +/** Return the element at position 'idx' of the fixed array field + * tlssecrets of the auth1_t in 'inp'. + */ +uint8_t auth1_get_tlssecrets(const auth1_t *inp, size_t idx); +/** Change the element at position 'idx' of the fixed array field + * tlssecrets of the auth1_t in 'inp', so that it will hold the value + * 'elt'. + */ +int auth1_set_tlssecrets(auth1_t *inp, size_t idx, uint8_t elt); +/** Return a pointer to the 32-element array field tlssecrets of + * 'inp'. + */ +uint8_t * auth1_getarray_tlssecrets(auth1_t *inp); +/** Return the position for end_of_fixed_part when we parsed this + * object + */ +const uint8_t * auth1_get_end_of_fixed_part(const auth1_t *inp); +/** Return the (constant) length of the array holding the rand field + * of the auth1_t in 'inp'. + */ +size_t auth1_getlen_rand(const auth1_t *inp); +/** Return the element at position 'idx' of the fixed array field rand + * of the auth1_t in 'inp'. + */ +uint8_t auth1_get_rand(const auth1_t *inp, size_t idx); +/** Change the element at position 'idx' of the fixed array field rand + * of the auth1_t in 'inp', so that it will hold the value 'elt'. + */ +int auth1_set_rand(auth1_t *inp, size_t idx, uint8_t elt); +/** Return a pointer to the 24-element array field rand of 'inp'. + */ +uint8_t * auth1_getarray_rand(auth1_t *inp); +/** Return the position for end_of_signed when we parsed this object + */ +const uint8_t * auth1_get_end_of_signed(const auth1_t *inp); +/** Return the length of the dynamic array holding the sig field of + * the auth1_t in 'inp'. + */ +size_t auth1_getlen_sig(const auth1_t *inp); +/** Return the element at position 'idx' of the dynamic array field + * sig of the auth1_t in 'inp'. + */ +uint8_t auth1_get_sig(auth1_t *inp, size_t idx); +/** Change the element at position 'idx' of the dynamic array field + * sig of the auth1_t in 'inp', so that it will hold the value 'elt'. + */ +int auth1_set_sig(auth1_t *inp, size_t idx, uint8_t elt); +/** Append a new element 'elt' to the dynamic array field sig of the + * auth1_t in 'inp'. + */ +int auth1_add_sig(auth1_t *inp, uint8_t elt); +/** Return a pointer to the variable-length array field sig of 'inp'. + */ +uint8_t * auth1_getarray_sig(auth1_t *inp); +/** Change the length of the variable-length array field sig of 'inp' + * to 'newlen'.Fill extra elements with 0. Return 0 on success; return + * -1 and set the error code on 'inp' on failure. + */ +int auth1_setlen_sig(auth1_t *inp, size_t newlen); +/** Return a newly allocated certs_cell with all elements set to zero. + */ +certs_cell_t *certs_cell_new(void); +/** Release all storage held by the certs_cell in 'victim'. (Do + * nothing if 'victim' is NULL.) + */ +void certs_cell_free(certs_cell_t *victim); +/** Try to parse a certs_cell from the buffer in 'input', using up to + * 'len_in' bytes from the input buffer. On success, return the number + * of bytes consumed and set *output to the newly allocated + * certs_cell_t. On failure, return -2 if the input appears truncated, + * and -1 if the input is otherwise invalid. + */ +ssize_t certs_cell_parse(certs_cell_t **output, const uint8_t *input, const size_t len_in); +/** Return the number of bytes we expect to need to encode the + * certs_cell in 'obj'. On failure, return a negative value. Note that + * this value may be an overestimate, and can even be an underestimate + * for certain unencodeable objects. + */ +ssize_t certs_cell_encoded_len(const certs_cell_t *obj); +/** Try to encode the certs_cell from 'input' into the buffer at + * 'output', using up to 'avail' bytes of the output buffer. On + * success, return the number of bytes used. On failure, return -2 if + * the buffer was not long enough, and -1 if the input was invalid. + */ +ssize_t certs_cell_encode(uint8_t *output, const size_t avail, const certs_cell_t *input); +/** Check whether the internal state of the certs_cell in 'obj' is + * consistent. Return NULL if it is, and a short message if it is not. + */ +const char *certs_cell_check(const certs_cell_t *obj); +/** Clear any errors that were set on the object 'obj' by its setter + * functions. Return true iff errors were cleared. + */ +int certs_cell_clear_errors(certs_cell_t *obj); +/** Return the value of the n_certs field of the certs_cell_t in 'inp' + */ +uint8_t certs_cell_get_n_certs(certs_cell_t *inp); +/** Set the value of the n_certs field of the certs_cell_t in 'inp' to + * 'val'. Return 0 on success; return -1 and set the error code on + * 'inp' on failure. + */ +int certs_cell_set_n_certs(certs_cell_t *inp, uint8_t val); +/** Return the length of the dynamic array holding the certs field of + * the certs_cell_t in 'inp'. + */ +size_t certs_cell_getlen_certs(const certs_cell_t *inp); +/** Return the element at position 'idx' of the dynamic array field + * certs of the certs_cell_t in 'inp'. + */ +struct certs_cell_cert_st * certs_cell_get_certs(certs_cell_t *inp, size_t idx); +/** Change the element at position 'idx' of the dynamic array field + * certs of the certs_cell_t in 'inp', so that it will hold the value + * 'elt'. Free the previous value, if any. + */ +int certs_cell_set_certs(certs_cell_t *inp, size_t idx, struct certs_cell_cert_st * elt); +/** As certs_cell_set_certs, but does not free the previous value. + */ +int certs_cell_set0_certs(certs_cell_t *inp, size_t idx, struct certs_cell_cert_st * elt); +/** Append a new element 'elt' to the dynamic array field certs of the + * certs_cell_t in 'inp'. + */ +int certs_cell_add_certs(certs_cell_t *inp, struct certs_cell_cert_st * elt); +/** Return a pointer to the variable-length array field certs of + * 'inp'. + */ +struct certs_cell_cert_st * * certs_cell_getarray_certs(certs_cell_t *inp); +/** Change the length of the variable-length array field certs of + * 'inp' to 'newlen'.Fill extra elements with NULL; free removed + * elements. Return 0 on success; return -1 and set the error code on + * 'inp' on failure. + */ +int certs_cell_setlen_certs(certs_cell_t *inp, size_t newlen); + + +#endif diff --git a/src/trunnel/link_handshake.trunnel b/src/trunnel/link_handshake.trunnel new file mode 100644 index 0000000000..b858e17c60 --- /dev/null +++ b/src/trunnel/link_handshake.trunnel @@ -0,0 +1,57 @@ + +struct certs_cell { + u8 n_certs; + struct certs_cell_cert certs[n_certs]; +} + +const CERTTYPE_RSA1024_ID_LINK = 1; +const CERTTYPE_RSA1024_ID_ID = 2; +const CERTTYPE_RSA1024_ID_AUTH = 3; +const CERTTYPE_ED_ID_SIGN = 4; +const CERTTYPE_ED_SIGN_LINK = 5; +const CERTTYPE_ED_SIGN_AUTH = 6; +const CERTTYPE_RSA1024_ID_EDID = 7; + +struct certs_cell_cert { + u8 cert_type; + u16 cert_len; + u8 body[cert_len]; +} + +struct rsa_ed_crosscert { + u8 ed_key[32]; + u32 expiration; + @ptr end_of_signed; + u8 sig_len; + u8 sig[sig_len]; // mismatches spec. +} + +struct auth_challenge_cell { + u8 challenge[32]; + u16 n_methods; + u16 methods[n_methods]; +} + +context auth_ctx { + u8 is_ed; +} + +struct auth1 with context auth_ctx { + u8 type[8]; + u8 cid[32]; + u8 sid[32]; + union u1[auth_ctx.is_ed] { + 0 : ; + 1 : u8 cid_ed[32]; + u8 sid_ed[32]; + default: fail; + }; + u8 slog[32]; + u8 clog[32]; + u8 scert[32]; + u8 tlssecrets[32]; + @ptr end_of_fixed_part; + u8 rand[24]; + @ptr end_of_signed; + u8 sig[]; +} |