mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-12-06 19:41:15 +01:00
prop224: Add ESTABLISH_INTRO and INTRO_ESTABLISHED trunnel definition
Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit is contained in:
David Goulet
@@ -0,0 +1,594 @@
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/* cell_common.c -- generated by Trunnel v1.5.
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* https://gitweb.torproject.org/trunnel.git
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* You probably shouldn't edit this file.
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*/
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#include <stdlib.h>
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#include "trunnel-impl.h"
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#include "cell_common.h"
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#define TRUNNEL_SET_ERROR_CODE(obj) \
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do { \
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(obj)->trunnel_error_code_ = 1; \
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} while (0)
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#if defined(__COVERITY__) || defined(__clang_analyzer__)
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/* If we're runnning a static analysis tool, we don't want it to complain
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* that some of our remaining-bytes checks are dead-code. */
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int cellcommon_deadcode_dummy__ = 0;
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#define OR_DEADCODE_DUMMY || cellcommon_deadcode_dummy__
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#else
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#define OR_DEADCODE_DUMMY
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#endif
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#define CHECK_REMAINING(nbytes, label) \
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do { \
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if (remaining < (nbytes) OR_DEADCODE_DUMMY) { \
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goto label; \
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} \
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} while (0)
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cell_extension_fields_t *
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cell_extension_fields_new(void)
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{
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cell_extension_fields_t *val = trunnel_calloc(1, sizeof(cell_extension_fields_t));
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if (NULL == val)
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return NULL;
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return val;
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}
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/** Release all storage held inside 'obj', but do not free 'obj'.
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*/
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static void
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cell_extension_fields_clear(cell_extension_fields_t *obj)
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{
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(void) obj;
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TRUNNEL_DYNARRAY_WIPE(&obj->field);
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TRUNNEL_DYNARRAY_CLEAR(&obj->field);
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}
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void
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cell_extension_fields_free(cell_extension_fields_t *obj)
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{
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if (obj == NULL)
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return;
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cell_extension_fields_clear(obj);
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trunnel_memwipe(obj, sizeof(cell_extension_fields_t));
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trunnel_free_(obj);
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}
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uint8_t
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cell_extension_fields_get_field_type(cell_extension_fields_t *inp)
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{
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return inp->field_type;
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}
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int
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cell_extension_fields_set_field_type(cell_extension_fields_t *inp, uint8_t val)
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{
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inp->field_type = val;
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return 0;
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}
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uint8_t
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cell_extension_fields_get_field_len(cell_extension_fields_t *inp)
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{
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return inp->field_len;
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}
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int
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cell_extension_fields_set_field_len(cell_extension_fields_t *inp, uint8_t val)
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{
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inp->field_len = val;
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return 0;
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}
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size_t
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cell_extension_fields_getlen_field(const cell_extension_fields_t *inp)
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{
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return TRUNNEL_DYNARRAY_LEN(&inp->field);
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}
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uint8_t
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cell_extension_fields_get_field(cell_extension_fields_t *inp, size_t idx)
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{
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return TRUNNEL_DYNARRAY_GET(&inp->field, idx);
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}
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uint8_t
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cell_extension_fields_getconst_field(const cell_extension_fields_t *inp, size_t idx)
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{
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return cell_extension_fields_get_field((cell_extension_fields_t*)inp, idx);
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}
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int
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cell_extension_fields_set_field(cell_extension_fields_t *inp, size_t idx, uint8_t elt)
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{
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TRUNNEL_DYNARRAY_SET(&inp->field, idx, elt);
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return 0;
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}
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int
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cell_extension_fields_add_field(cell_extension_fields_t *inp, uint8_t elt)
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{
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#if SIZE_MAX >= UINT8_MAX
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if (inp->field.n_ == UINT8_MAX)
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goto trunnel_alloc_failed;
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#endif
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TRUNNEL_DYNARRAY_ADD(uint8_t, &inp->field, elt, {});
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return 0;
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trunnel_alloc_failed:
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TRUNNEL_SET_ERROR_CODE(inp);
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return -1;
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}
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uint8_t *
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cell_extension_fields_getarray_field(cell_extension_fields_t *inp)
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{
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return inp->field.elts_;
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}
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const uint8_t *
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cell_extension_fields_getconstarray_field(const cell_extension_fields_t *inp)
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{
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return (const uint8_t *)cell_extension_fields_getarray_field((cell_extension_fields_t*)inp);
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}
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int
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cell_extension_fields_setlen_field(cell_extension_fields_t *inp, size_t newlen)
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{
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uint8_t *newptr;
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#if UINT8_MAX < SIZE_MAX
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if (newlen > UINT8_MAX)
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goto trunnel_alloc_failed;
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#endif
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newptr = trunnel_dynarray_setlen(&inp->field.allocated_,
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&inp->field.n_, inp->field.elts_, newlen,
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sizeof(inp->field.elts_[0]), (trunnel_free_fn_t) NULL,
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&inp->trunnel_error_code_);
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if (newlen != 0 && newptr == NULL)
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goto trunnel_alloc_failed;
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inp->field.elts_ = newptr;
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return 0;
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trunnel_alloc_failed:
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TRUNNEL_SET_ERROR_CODE(inp);
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return -1;
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}
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const char *
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cell_extension_fields_check(const cell_extension_fields_t *obj)
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{
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if (obj == NULL)
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return "Object was NULL";
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if (obj->trunnel_error_code_)
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return "A set function failed on this object";
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if (TRUNNEL_DYNARRAY_LEN(&obj->field) != obj->field_len)
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return "Length mismatch for field";
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return NULL;
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}
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ssize_t
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cell_extension_fields_encoded_len(const cell_extension_fields_t *obj)
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{
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ssize_t result = 0;
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if (NULL != cell_extension_fields_check(obj))
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return -1;
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/* Length of u8 field_type */
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result += 1;
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/* Length of u8 field_len */
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result += 1;
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/* Length of u8 field[field_len] */
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result += TRUNNEL_DYNARRAY_LEN(&obj->field);
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return result;
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}
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int
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cell_extension_fields_clear_errors(cell_extension_fields_t *obj)
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{
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int r = obj->trunnel_error_code_;
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obj->trunnel_error_code_ = 0;
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return r;
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}
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ssize_t
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cell_extension_fields_encode(uint8_t *output, const size_t avail, const cell_extension_fields_t *obj)
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{
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ssize_t result = 0;
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size_t written = 0;
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uint8_t *ptr = output;
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const char *msg;
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#ifdef TRUNNEL_CHECK_ENCODED_LEN
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const ssize_t encoded_len = cell_extension_fields_encoded_len(obj);
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#endif
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if (NULL != (msg = cell_extension_fields_check(obj)))
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goto check_failed;
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#ifdef TRUNNEL_CHECK_ENCODED_LEN
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trunnel_assert(encoded_len >= 0);
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#endif
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/* Encode u8 field_type */
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trunnel_assert(written <= avail);
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if (avail - written < 1)
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goto truncated;
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trunnel_set_uint8(ptr, (obj->field_type));
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written += 1; ptr += 1;
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/* Encode u8 field_len */
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trunnel_assert(written <= avail);
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if (avail - written < 1)
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goto truncated;
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trunnel_set_uint8(ptr, (obj->field_len));
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written += 1; ptr += 1;
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/* Encode u8 field[field_len] */
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{
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size_t elt_len = TRUNNEL_DYNARRAY_LEN(&obj->field);
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trunnel_assert(obj->field_len == elt_len);
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trunnel_assert(written <= avail);
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if (avail - written < elt_len)
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goto truncated;
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if (elt_len)
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memcpy(ptr, obj->field.elts_, elt_len);
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written += elt_len; ptr += elt_len;
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}
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trunnel_assert(ptr == output + written);
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#ifdef TRUNNEL_CHECK_ENCODED_LEN
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{
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trunnel_assert(encoded_len >= 0);
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trunnel_assert((size_t)encoded_len == written);
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}
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#endif
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return written;
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truncated:
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result = -2;
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goto fail;
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check_failed:
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(void)msg;
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result = -1;
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goto fail;
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fail:
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trunnel_assert(result < 0);
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return result;
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}
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/** As cell_extension_fields_parse(), but do not allocate the output
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* object.
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*/
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static ssize_t
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cell_extension_fields_parse_into(cell_extension_fields_t *obj, const uint8_t *input, const size_t len_in)
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{
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const uint8_t *ptr = input;
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size_t remaining = len_in;
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ssize_t result = 0;
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(void)result;
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/* Parse u8 field_type */
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CHECK_REMAINING(1, truncated);
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obj->field_type = (trunnel_get_uint8(ptr));
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remaining -= 1; ptr += 1;
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/* Parse u8 field_len */
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CHECK_REMAINING(1, truncated);
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obj->field_len = (trunnel_get_uint8(ptr));
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remaining -= 1; ptr += 1;
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/* Parse u8 field[field_len] */
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CHECK_REMAINING(obj->field_len, truncated);
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TRUNNEL_DYNARRAY_EXPAND(uint8_t, &obj->field, obj->field_len, {});
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obj->field.n_ = obj->field_len;
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if (obj->field_len)
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memcpy(obj->field.elts_, ptr, obj->field_len);
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ptr += obj->field_len; remaining -= obj->field_len;
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trunnel_assert(ptr + remaining == input + len_in);
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return len_in - remaining;
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truncated:
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return -2;
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trunnel_alloc_failed:
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return -1;
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}
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ssize_t
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cell_extension_fields_parse(cell_extension_fields_t **output, const uint8_t *input, const size_t len_in)
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{
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ssize_t result;
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*output = cell_extension_fields_new();
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if (NULL == *output)
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return -1;
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result = cell_extension_fields_parse_into(*output, input, len_in);
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if (result < 0) {
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cell_extension_fields_free(*output);
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*output = NULL;
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}
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return result;
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}
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cell_extension_t *
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cell_extension_new(void)
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{
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cell_extension_t *val = trunnel_calloc(1, sizeof(cell_extension_t));
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if (NULL == val)
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return NULL;
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return val;
|
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}
|
||||
|
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/** Release all storage held inside 'obj', but do not free 'obj'.
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*/
|
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static void
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cell_extension_clear(cell_extension_t *obj)
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||||
{
|
||||
(void) obj;
|
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{
|
||||
|
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unsigned idx;
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for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->fields); ++idx) {
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cell_extension_fields_free(TRUNNEL_DYNARRAY_GET(&obj->fields, idx));
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}
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}
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TRUNNEL_DYNARRAY_WIPE(&obj->fields);
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TRUNNEL_DYNARRAY_CLEAR(&obj->fields);
|
||||
}
|
||||
|
||||
void
|
||||
cell_extension_free(cell_extension_t *obj)
|
||||
{
|
||||
if (obj == NULL)
|
||||
return;
|
||||
cell_extension_clear(obj);
|
||||
trunnel_memwipe(obj, sizeof(cell_extension_t));
|
||||
trunnel_free_(obj);
|
||||
}
|
||||
|
||||
uint8_t
|
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cell_extension_get_num(cell_extension_t *inp)
|
||||
{
|
||||
return inp->num;
|
||||
}
|
||||
int
|
||||
cell_extension_set_num(cell_extension_t *inp, uint8_t val)
|
||||
{
|
||||
inp->num = val;
|
||||
return 0;
|
||||
}
|
||||
size_t
|
||||
cell_extension_getlen_fields(const cell_extension_t *inp)
|
||||
{
|
||||
return TRUNNEL_DYNARRAY_LEN(&inp->fields);
|
||||
}
|
||||
|
||||
struct cell_extension_fields_st *
|
||||
cell_extension_get_fields(cell_extension_t *inp, size_t idx)
|
||||
{
|
||||
return TRUNNEL_DYNARRAY_GET(&inp->fields, idx);
|
||||
}
|
||||
|
||||
const struct cell_extension_fields_st *
|
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cell_extension_getconst_fields(const cell_extension_t *inp, size_t idx)
|
||||
{
|
||||
return cell_extension_get_fields((cell_extension_t*)inp, idx);
|
||||
}
|
||||
int
|
||||
cell_extension_set_fields(cell_extension_t *inp, size_t idx, struct cell_extension_fields_st * elt)
|
||||
{
|
||||
cell_extension_fields_t *oldval = TRUNNEL_DYNARRAY_GET(&inp->fields, idx);
|
||||
if (oldval && oldval != elt)
|
||||
cell_extension_fields_free(oldval);
|
||||
return cell_extension_set0_fields(inp, idx, elt);
|
||||
}
|
||||
int
|
||||
cell_extension_set0_fields(cell_extension_t *inp, size_t idx, struct cell_extension_fields_st * elt)
|
||||
{
|
||||
TRUNNEL_DYNARRAY_SET(&inp->fields, idx, elt);
|
||||
return 0;
|
||||
}
|
||||
int
|
||||
cell_extension_add_fields(cell_extension_t *inp, struct cell_extension_fields_st * elt)
|
||||
{
|
||||
#if SIZE_MAX >= UINT8_MAX
|
||||
if (inp->fields.n_ == UINT8_MAX)
|
||||
goto trunnel_alloc_failed;
|
||||
#endif
|
||||
TRUNNEL_DYNARRAY_ADD(struct cell_extension_fields_st *, &inp->fields, elt, {});
|
||||
return 0;
|
||||
trunnel_alloc_failed:
|
||||
TRUNNEL_SET_ERROR_CODE(inp);
|
||||
return -1;
|
||||
}
|
||||
|
||||
struct cell_extension_fields_st * *
|
||||
cell_extension_getarray_fields(cell_extension_t *inp)
|
||||
{
|
||||
return inp->fields.elts_;
|
||||
}
|
||||
const struct cell_extension_fields_st * const *
|
||||
cell_extension_getconstarray_fields(const cell_extension_t *inp)
|
||||
{
|
||||
return (const struct cell_extension_fields_st * const *)cell_extension_getarray_fields((cell_extension_t*)inp);
|
||||
}
|
||||
int
|
||||
cell_extension_setlen_fields(cell_extension_t *inp, size_t newlen)
|
||||
{
|
||||
struct cell_extension_fields_st * *newptr;
|
||||
#if UINT8_MAX < SIZE_MAX
|
||||
if (newlen > UINT8_MAX)
|
||||
goto trunnel_alloc_failed;
|
||||
#endif
|
||||
newptr = trunnel_dynarray_setlen(&inp->fields.allocated_,
|
||||
&inp->fields.n_, inp->fields.elts_, newlen,
|
||||
sizeof(inp->fields.elts_[0]), (trunnel_free_fn_t) cell_extension_fields_free,
|
||||
&inp->trunnel_error_code_);
|
||||
if (newlen != 0 && newptr == NULL)
|
||||
goto trunnel_alloc_failed;
|
||||
inp->fields.elts_ = newptr;
|
||||
return 0;
|
||||
trunnel_alloc_failed:
|
||||
TRUNNEL_SET_ERROR_CODE(inp);
|
||||
return -1;
|
||||
}
|
||||
const char *
|
||||
cell_extension_check(const cell_extension_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->fields); ++idx) {
|
||||
if (NULL != (msg = cell_extension_fields_check(TRUNNEL_DYNARRAY_GET(&obj->fields, idx))))
|
||||
return msg;
|
||||
}
|
||||
}
|
||||
if (TRUNNEL_DYNARRAY_LEN(&obj->fields) != obj->num)
|
||||
return "Length mismatch for fields";
|
||||
return NULL;
|
||||
}
|
||||
|
||||
ssize_t
|
||||
cell_extension_encoded_len(const cell_extension_t *obj)
|
||||
{
|
||||
ssize_t result = 0;
|
||||
|
||||
if (NULL != cell_extension_check(obj))
|
||||
return -1;
|
||||
|
||||
|
||||
/* Length of u8 num */
|
||||
result += 1;
|
||||
|
||||
/* Length of struct cell_extension_fields fields[num] */
|
||||
{
|
||||
|
||||
unsigned idx;
|
||||
for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->fields); ++idx) {
|
||||
result += cell_extension_fields_encoded_len(TRUNNEL_DYNARRAY_GET(&obj->fields, idx));
|
||||
}
|
||||
}
|
||||
return result;
|
||||
}
|
||||
int
|
||||
cell_extension_clear_errors(cell_extension_t *obj)
|
||||
{
|
||||
int r = obj->trunnel_error_code_;
|
||||
obj->trunnel_error_code_ = 0;
|
||||
return r;
|
||||
}
|
||||
ssize_t
|
||||
cell_extension_encode(uint8_t *output, const size_t avail, const cell_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 = cell_extension_encoded_len(obj);
|
||||
#endif
|
||||
|
||||
if (NULL != (msg = cell_extension_check(obj)))
|
||||
goto check_failed;
|
||||
|
||||
#ifdef TRUNNEL_CHECK_ENCODED_LEN
|
||||
trunnel_assert(encoded_len >= 0);
|
||||
#endif
|
||||
|
||||
/* Encode u8 num */
|
||||
trunnel_assert(written <= avail);
|
||||
if (avail - written < 1)
|
||||
goto truncated;
|
||||
trunnel_set_uint8(ptr, (obj->num));
|
||||
written += 1; ptr += 1;
|
||||
|
||||
/* Encode struct cell_extension_fields fields[num] */
|
||||
{
|
||||
|
||||
unsigned idx;
|
||||
for (idx = 0; idx < TRUNNEL_DYNARRAY_LEN(&obj->fields); ++idx) {
|
||||
trunnel_assert(written <= avail);
|
||||
result = cell_extension_fields_encode(ptr, avail - written, TRUNNEL_DYNARRAY_GET(&obj->fields, 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 cell_extension_parse(), but do not allocate the output object.
|
||||
*/
|
||||
static ssize_t
|
||||
cell_extension_parse_into(cell_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 u8 num */
|
||||
CHECK_REMAINING(1, truncated);
|
||||
obj->num = (trunnel_get_uint8(ptr));
|
||||
remaining -= 1; ptr += 1;
|
||||
|
||||
/* Parse struct cell_extension_fields fields[num] */
|
||||
TRUNNEL_DYNARRAY_EXPAND(cell_extension_fields_t *, &obj->fields, obj->num, {});
|
||||
{
|
||||
cell_extension_fields_t * elt;
|
||||
unsigned idx;
|
||||
for (idx = 0; idx < obj->num; ++idx) {
|
||||
result = cell_extension_fields_parse(&elt, ptr, remaining);
|
||||
if (result < 0)
|
||||
goto relay_fail;
|
||||
trunnel_assert((size_t)result <= remaining);
|
||||
remaining -= result; ptr += result;
|
||||
TRUNNEL_DYNARRAY_ADD(cell_extension_fields_t *, &obj->fields, elt, {cell_extension_fields_free(elt);});
|
||||
}
|
||||
}
|
||||
trunnel_assert(ptr + remaining == input + len_in);
|
||||
return len_in - remaining;
|
||||
|
||||
truncated:
|
||||
return -2;
|
||||
relay_fail:
|
||||
trunnel_assert(result < 0);
|
||||
return result;
|
||||
trunnel_alloc_failed:
|
||||
return -1;
|
||||
}
|
||||
|
||||
ssize_t
|
||||
cell_extension_parse(cell_extension_t **output, const uint8_t *input, const size_t len_in)
|
||||
{
|
||||
ssize_t result;
|
||||
*output = cell_extension_new();
|
||||
if (NULL == *output)
|
||||
return -1;
|
||||
result = cell_extension_parse_into(*output, input, len_in);
|
||||
if (result < 0) {
|
||||
cell_extension_free(*output);
|
||||
*output = NULL;
|
||||
}
|
||||
return result;
|
||||
}
|
||||
@@ -0,0 +1,198 @@
|
||||
/* cell_common.h -- generated by by Trunnel v1.5.
|
||||
* https://gitweb.torproject.org/trunnel.git
|
||||
* You probably shouldn't edit this file.
|
||||
*/
|
||||
#ifndef TRUNNEL_CELL_COMMON_H
|
||||
#define TRUNNEL_CELL_COMMON_H
|
||||
|
||||
#include <stdint.h>
|
||||
#include "trunnel.h"
|
||||
|
||||
#if !defined(TRUNNEL_OPAQUE) && !defined(TRUNNEL_OPAQUE_CELL_EXTENSION_FIELDS)
|
||||
struct cell_extension_fields_st {
|
||||
uint8_t field_type;
|
||||
uint8_t field_len;
|
||||
TRUNNEL_DYNARRAY_HEAD(, uint8_t) field;
|
||||
uint8_t trunnel_error_code_;
|
||||
};
|
||||
#endif
|
||||
typedef struct cell_extension_fields_st cell_extension_fields_t;
|
||||
#if !defined(TRUNNEL_OPAQUE) && !defined(TRUNNEL_OPAQUE_CELL_EXTENSION)
|
||||
struct cell_extension_st {
|
||||
uint8_t num;
|
||||
TRUNNEL_DYNARRAY_HEAD(, struct cell_extension_fields_st *) fields;
|
||||
uint8_t trunnel_error_code_;
|
||||
};
|
||||
#endif
|
||||
typedef struct cell_extension_st cell_extension_t;
|
||||
/** Return a newly allocated cell_extension_fields with all elements
|
||||
* set to zero.
|
||||
*/
|
||||
cell_extension_fields_t *cell_extension_fields_new(void);
|
||||
/** Release all storage held by the cell_extension_fields in 'victim'.
|
||||
* (Do nothing if 'victim' is NULL.)
|
||||
*/
|
||||
void cell_extension_fields_free(cell_extension_fields_t *victim);
|
||||
/** Try to parse a cell_extension_fields 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 cell_extension_fields_t. On failure, return -2 if the
|
||||
* input appears truncated, and -1 if the input is otherwise invalid.
|
||||
*/
|
||||
ssize_t cell_extension_fields_parse(cell_extension_fields_t **output, const uint8_t *input, const size_t len_in);
|
||||
/** Return the number of bytes we expect to need to encode the
|
||||
* cell_extension_fields 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 cell_extension_fields_encoded_len(const cell_extension_fields_t *obj);
|
||||
/** Try to encode the cell_extension_fields 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 cell_extension_fields_encode(uint8_t *output, size_t avail, const cell_extension_fields_t *input);
|
||||
/** Check whether the internal state of the cell_extension_fields in
|
||||
* 'obj' is consistent. Return NULL if it is, and a short message if
|
||||
* it is not.
|
||||
*/
|
||||
const char *cell_extension_fields_check(const cell_extension_fields_t *obj);
|
||||
/** Clear any errors that were set on the object 'obj' by its setter
|
||||
* functions. Return true iff errors were cleared.
|
||||
*/
|
||||
int cell_extension_fields_clear_errors(cell_extension_fields_t *obj);
|
||||
/** Return the value of the field_type field of the
|
||||
* cell_extension_fields_t in 'inp'
|
||||
*/
|
||||
uint8_t cell_extension_fields_get_field_type(cell_extension_fields_t *inp);
|
||||
/** Set the value of the field_type field of the
|
||||
* cell_extension_fields_t in 'inp' to 'val'. Return 0 on success;
|
||||
* return -1 and set the error code on 'inp' on failure.
|
||||
*/
|
||||
int cell_extension_fields_set_field_type(cell_extension_fields_t *inp, uint8_t val);
|
||||
/** Return the value of the field_len field of the
|
||||
* cell_extension_fields_t in 'inp'
|
||||
*/
|
||||
uint8_t cell_extension_fields_get_field_len(cell_extension_fields_t *inp);
|
||||
/** Set the value of the field_len field of the
|
||||
* cell_extension_fields_t in 'inp' to 'val'. Return 0 on success;
|
||||
* return -1 and set the error code on 'inp' on failure.
|
||||
*/
|
||||
int cell_extension_fields_set_field_len(cell_extension_fields_t *inp, uint8_t val);
|
||||
/** Return the length of the dynamic array holding the field field of
|
||||
* the cell_extension_fields_t in 'inp'.
|
||||
*/
|
||||
size_t cell_extension_fields_getlen_field(const cell_extension_fields_t *inp);
|
||||
/** Return the element at position 'idx' of the dynamic array field
|
||||
* field of the cell_extension_fields_t in 'inp'.
|
||||
*/
|
||||
uint8_t cell_extension_fields_get_field(cell_extension_fields_t *inp, size_t idx);
|
||||
/** As cell_extension_fields_get_field, but take and return a const
|
||||
* pointer
|
||||
*/
|
||||
uint8_t cell_extension_fields_getconst_field(const cell_extension_fields_t *inp, size_t idx);
|
||||
/** Change the element at position 'idx' of the dynamic array field
|
||||
* field of the cell_extension_fields_t in 'inp', so that it will hold
|
||||
* the value 'elt'.
|
||||
*/
|
||||
int cell_extension_fields_set_field(cell_extension_fields_t *inp, size_t idx, uint8_t elt);
|
||||
/** Append a new element 'elt' to the dynamic array field field of the
|
||||
* cell_extension_fields_t in 'inp'.
|
||||
*/
|
||||
int cell_extension_fields_add_field(cell_extension_fields_t *inp, uint8_t elt);
|
||||
/** Return a pointer to the variable-length array field field of
|
||||
* 'inp'.
|
||||
*/
|
||||
uint8_t * cell_extension_fields_getarray_field(cell_extension_fields_t *inp);
|
||||
/** As cell_extension_fields_get_field, but take and return a const
|
||||
* pointer
|
||||
*/
|
||||
const uint8_t * cell_extension_fields_getconstarray_field(const cell_extension_fields_t *inp);
|
||||
/** Change the length of the variable-length array field field 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 cell_extension_fields_setlen_field(cell_extension_fields_t *inp, size_t newlen);
|
||||
/** Return a newly allocated cell_extension with all elements set to
|
||||
* zero.
|
||||
*/
|
||||
cell_extension_t *cell_extension_new(void);
|
||||
/** Release all storage held by the cell_extension in 'victim'. (Do
|
||||
* nothing if 'victim' is NULL.)
|
||||
*/
|
||||
void cell_extension_free(cell_extension_t *victim);
|
||||
/** Try to parse a cell_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
|
||||
* cell_extension_t. On failure, return -2 if the input appears
|
||||
* truncated, and -1 if the input is otherwise invalid.
|
||||
*/
|
||||
ssize_t cell_extension_parse(cell_extension_t **output, const uint8_t *input, const size_t len_in);
|
||||
/** Return the number of bytes we expect to need to encode the
|
||||
* cell_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 cell_extension_encoded_len(const cell_extension_t *obj);
|
||||
/** Try to encode the cell_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 cell_extension_encode(uint8_t *output, size_t avail, const cell_extension_t *input);
|
||||
/** Check whether the internal state of the cell_extension in 'obj' is
|
||||
* consistent. Return NULL if it is, and a short message if it is not.
|
||||
*/
|
||||
const char *cell_extension_check(const cell_extension_t *obj);
|
||||
/** Clear any errors that were set on the object 'obj' by its setter
|
||||
* functions. Return true iff errors were cleared.
|
||||
*/
|
||||
int cell_extension_clear_errors(cell_extension_t *obj);
|
||||
/** Return the value of the num field of the cell_extension_t in 'inp'
|
||||
*/
|
||||
uint8_t cell_extension_get_num(cell_extension_t *inp);
|
||||
/** Set the value of the num field of the cell_extension_t in 'inp' to
|
||||
* 'val'. Return 0 on success; return -1 and set the error code on
|
||||
* 'inp' on failure.
|
||||
*/
|
||||
int cell_extension_set_num(cell_extension_t *inp, uint8_t val);
|
||||
/** Return the length of the dynamic array holding the fields field of
|
||||
* the cell_extension_t in 'inp'.
|
||||
*/
|
||||
size_t cell_extension_getlen_fields(const cell_extension_t *inp);
|
||||
/** Return the element at position 'idx' of the dynamic array field
|
||||
* fields of the cell_extension_t in 'inp'.
|
||||
*/
|
||||
struct cell_extension_fields_st * cell_extension_get_fields(cell_extension_t *inp, size_t idx);
|
||||
/** As cell_extension_get_fields, but take and return a const pointer
|
||||
*/
|
||||
const struct cell_extension_fields_st * cell_extension_getconst_fields(const cell_extension_t *inp, size_t idx);
|
||||
/** Change the element at position 'idx' of the dynamic array field
|
||||
* fields of the cell_extension_t in 'inp', so that it will hold the
|
||||
* value 'elt'. Free the previous value, if any.
|
||||
*/
|
||||
int cell_extension_set_fields(cell_extension_t *inp, size_t idx, struct cell_extension_fields_st * elt);
|
||||
/** As cell_extension_set_fields, but does not free the previous
|
||||
* value.
|
||||
*/
|
||||
int cell_extension_set0_fields(cell_extension_t *inp, size_t idx, struct cell_extension_fields_st * elt);
|
||||
/** Append a new element 'elt' to the dynamic array field fields of
|
||||
* the cell_extension_t in 'inp'.
|
||||
*/
|
||||
int cell_extension_add_fields(cell_extension_t *inp, struct cell_extension_fields_st * elt);
|
||||
/** Return a pointer to the variable-length array field fields of
|
||||
* 'inp'.
|
||||
*/
|
||||
struct cell_extension_fields_st * * cell_extension_getarray_fields(cell_extension_t *inp);
|
||||
/** As cell_extension_get_fields, but take and return a const pointer
|
||||
*/
|
||||
const struct cell_extension_fields_st * const * cell_extension_getconstarray_fields(const cell_extension_t *inp);
|
||||
/** Change the length of the variable-length array field fields 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 cell_extension_setlen_fields(cell_extension_t *inp, size_t newlen);
|
||||
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,12 @@
|
||||
/* This file contains common data structure that cells use. */
|
||||
|
||||
struct cell_extension_fields {
|
||||
u8 field_type;
|
||||
u8 field_len;
|
||||
u8 field[field_len];
|
||||
};
|
||||
|
||||
struct cell_extension {
|
||||
u8 num;
|
||||
struct cell_extension_fields fields[num];
|
||||
};
|
||||
@@ -0,0 +1,735 @@
|
||||
/* cell_establish_intro.c -- generated by Trunnel v1.5.
|
||||
* https://gitweb.torproject.org/trunnel.git
|
||||
* You probably shouldn't edit this file.
|
||||
*/
|
||||
#include <stdlib.h>
|
||||
#include "trunnel-impl.h"
|
||||
|
||||
#include "cell_establish_intro.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 cellestablishintro_deadcode_dummy__ = 0;
|
||||
#define OR_DEADCODE_DUMMY || cellestablishintro_deadcode_dummy__
|
||||
#else
|
||||
#define OR_DEADCODE_DUMMY
|
||||
#endif
|
||||
|
||||
#define CHECK_REMAINING(nbytes, label) \
|
||||
do { \
|
||||
if (remaining < (nbytes) OR_DEADCODE_DUMMY) { \
|
||||
goto label; \
|
||||
} \
|
||||
} while (0)
|
||||
|
||||
typedef struct cell_extension_st cell_extension_t;
|
||||
cell_extension_t *cell_extension_new(void);
|
||||
void cell_extension_free(cell_extension_t *victim);
|
||||
ssize_t cell_extension_parse(cell_extension_t **output, const uint8_t *input, const size_t len_in);
|
||||
ssize_t cell_extension_encoded_len(const cell_extension_t *obj);
|
||||
ssize_t cell_extension_encode(uint8_t *output, size_t avail, const cell_extension_t *input);
|
||||
const char *cell_extension_check(const cell_extension_t *obj);
|
||||
int cell_extension_clear_errors(cell_extension_t *obj);
|
||||
hs_cell_establish_intro_t *
|
||||
hs_cell_establish_intro_new(void)
|
||||
{
|
||||
hs_cell_establish_intro_t *val = trunnel_calloc(1, sizeof(hs_cell_establish_intro_t));
|
||||
if (NULL == val)
|
||||
return NULL;
|
||||
return val;
|
||||
}
|
||||
|
||||
/** Release all storage held inside 'obj', but do not free 'obj'.
|
||||
*/
|
||||
static void
|
||||
hs_cell_establish_intro_clear(hs_cell_establish_intro_t *obj)
|
||||
{
|
||||
(void) obj;
|
||||
TRUNNEL_DYNARRAY_WIPE(&obj->auth_key);
|
||||
TRUNNEL_DYNARRAY_CLEAR(&obj->auth_key);
|
||||
cell_extension_free(obj->extensions);
|
||||
obj->extensions = NULL;
|
||||
TRUNNEL_DYNARRAY_WIPE(&obj->sig);
|
||||
TRUNNEL_DYNARRAY_CLEAR(&obj->sig);
|
||||
}
|
||||
|
||||
void
|
||||
hs_cell_establish_intro_free(hs_cell_establish_intro_t *obj)
|
||||
{
|
||||
if (obj == NULL)
|
||||
return;
|
||||
hs_cell_establish_intro_clear(obj);
|
||||
trunnel_memwipe(obj, sizeof(hs_cell_establish_intro_t));
|
||||
trunnel_free_(obj);
|
||||
}
|
||||
|
||||
const uint8_t *
|
||||
hs_cell_establish_intro_get_start_cell(const hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
return inp->start_cell;
|
||||
}
|
||||
uint8_t
|
||||
hs_cell_establish_intro_get_auth_key_type(hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
return inp->auth_key_type;
|
||||
}
|
||||
int
|
||||
hs_cell_establish_intro_set_auth_key_type(hs_cell_establish_intro_t *inp, uint8_t val)
|
||||
{
|
||||
if (! ((val == 0 || val == 1 || val == 2))) {
|
||||
TRUNNEL_SET_ERROR_CODE(inp);
|
||||
return -1;
|
||||
}
|
||||
inp->auth_key_type = val;
|
||||
return 0;
|
||||
}
|
||||
uint16_t
|
||||
hs_cell_establish_intro_get_auth_key_len(hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
return inp->auth_key_len;
|
||||
}
|
||||
int
|
||||
hs_cell_establish_intro_set_auth_key_len(hs_cell_establish_intro_t *inp, uint16_t val)
|
||||
{
|
||||
inp->auth_key_len = val;
|
||||
return 0;
|
||||
}
|
||||
size_t
|
||||
hs_cell_establish_intro_getlen_auth_key(const hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
return TRUNNEL_DYNARRAY_LEN(&inp->auth_key);
|
||||
}
|
||||
|
||||
uint8_t
|
||||
hs_cell_establish_intro_get_auth_key(hs_cell_establish_intro_t *inp, size_t idx)
|
||||
{
|
||||
return TRUNNEL_DYNARRAY_GET(&inp->auth_key, idx);
|
||||
}
|
||||
|
||||
uint8_t
|
||||
hs_cell_establish_intro_getconst_auth_key(const hs_cell_establish_intro_t *inp, size_t idx)
|
||||
{
|
||||
return hs_cell_establish_intro_get_auth_key((hs_cell_establish_intro_t*)inp, idx);
|
||||
}
|
||||
int
|
||||
hs_cell_establish_intro_set_auth_key(hs_cell_establish_intro_t *inp, size_t idx, uint8_t elt)
|
||||
{
|
||||
TRUNNEL_DYNARRAY_SET(&inp->auth_key, idx, elt);
|
||||
return 0;
|
||||
}
|
||||
int
|
||||
hs_cell_establish_intro_add_auth_key(hs_cell_establish_intro_t *inp, uint8_t elt)
|
||||
{
|
||||
#if SIZE_MAX >= UINT16_MAX
|
||||
if (inp->auth_key.n_ == UINT16_MAX)
|
||||
goto trunnel_alloc_failed;
|
||||
#endif
|
||||
TRUNNEL_DYNARRAY_ADD(uint8_t, &inp->auth_key, elt, {});
|
||||
return 0;
|
||||
trunnel_alloc_failed:
|
||||
TRUNNEL_SET_ERROR_CODE(inp);
|
||||
return -1;
|
||||
}
|
||||
|
||||
uint8_t *
|
||||
hs_cell_establish_intro_getarray_auth_key(hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
return inp->auth_key.elts_;
|
||||
}
|
||||
const uint8_t *
|
||||
hs_cell_establish_intro_getconstarray_auth_key(const hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
return (const uint8_t *)hs_cell_establish_intro_getarray_auth_key((hs_cell_establish_intro_t*)inp);
|
||||
}
|
||||
int
|
||||
hs_cell_establish_intro_setlen_auth_key(hs_cell_establish_intro_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->auth_key.allocated_,
|
||||
&inp->auth_key.n_, inp->auth_key.elts_, newlen,
|
||||
sizeof(inp->auth_key.elts_[0]), (trunnel_free_fn_t) NULL,
|
||||
&inp->trunnel_error_code_);
|
||||
if (newlen != 0 && newptr == NULL)
|
||||
goto trunnel_alloc_failed;
|
||||
inp->auth_key.elts_ = newptr;
|
||||
return 0;
|
||||
trunnel_alloc_failed:
|
||||
TRUNNEL_SET_ERROR_CODE(inp);
|
||||
return -1;
|
||||
}
|
||||
struct cell_extension_st *
|
||||
hs_cell_establish_intro_get_extensions(hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
return inp->extensions;
|
||||
}
|
||||
const struct cell_extension_st *
|
||||
hs_cell_establish_intro_getconst_extensions(const hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
return hs_cell_establish_intro_get_extensions((hs_cell_establish_intro_t*) inp);
|
||||
}
|
||||
int
|
||||
hs_cell_establish_intro_set_extensions(hs_cell_establish_intro_t *inp, struct cell_extension_st *val)
|
||||
{
|
||||
if (inp->extensions && inp->extensions != val)
|
||||
cell_extension_free(inp->extensions);
|
||||
return hs_cell_establish_intro_set0_extensions(inp, val);
|
||||
}
|
||||
int
|
||||
hs_cell_establish_intro_set0_extensions(hs_cell_establish_intro_t *inp, struct cell_extension_st *val)
|
||||
{
|
||||
inp->extensions = val;
|
||||
return 0;
|
||||
}
|
||||
const uint8_t *
|
||||
hs_cell_establish_intro_get_end_mac_fields(const hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
return inp->end_mac_fields;
|
||||
}
|
||||
size_t
|
||||
hs_cell_establish_intro_getlen_handshake_mac(const hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
(void)inp; return TRUNNEL_SHA3_256_LEN;
|
||||
}
|
||||
|
||||
uint8_t
|
||||
hs_cell_establish_intro_get_handshake_mac(hs_cell_establish_intro_t *inp, size_t idx)
|
||||
{
|
||||
trunnel_assert(idx < TRUNNEL_SHA3_256_LEN);
|
||||
return inp->handshake_mac[idx];
|
||||
}
|
||||
|
||||
uint8_t
|
||||
hs_cell_establish_intro_getconst_handshake_mac(const hs_cell_establish_intro_t *inp, size_t idx)
|
||||
{
|
||||
return hs_cell_establish_intro_get_handshake_mac((hs_cell_establish_intro_t*)inp, idx);
|
||||
}
|
||||
int
|
||||
hs_cell_establish_intro_set_handshake_mac(hs_cell_establish_intro_t *inp, size_t idx, uint8_t elt)
|
||||
{
|
||||
trunnel_assert(idx < TRUNNEL_SHA3_256_LEN);
|
||||
inp->handshake_mac[idx] = elt;
|
||||
return 0;
|
||||
}
|
||||
|
||||
uint8_t *
|
||||
hs_cell_establish_intro_getarray_handshake_mac(hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
return inp->handshake_mac;
|
||||
}
|
||||
const uint8_t *
|
||||
hs_cell_establish_intro_getconstarray_handshake_mac(const hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
return (const uint8_t *)hs_cell_establish_intro_getarray_handshake_mac((hs_cell_establish_intro_t*)inp);
|
||||
}
|
||||
uint16_t
|
||||
hs_cell_establish_intro_get_sig_len(hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
return inp->sig_len;
|
||||
}
|
||||
int
|
||||
hs_cell_establish_intro_set_sig_len(hs_cell_establish_intro_t *inp, uint16_t val)
|
||||
{
|
||||
inp->sig_len = val;
|
||||
return 0;
|
||||
}
|
||||
const uint8_t *
|
||||
hs_cell_establish_intro_get_end_sig_fields(const hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
return inp->end_sig_fields;
|
||||
}
|
||||
size_t
|
||||
hs_cell_establish_intro_getlen_sig(const hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
return TRUNNEL_DYNARRAY_LEN(&inp->sig);
|
||||
}
|
||||
|
||||
uint8_t
|
||||
hs_cell_establish_intro_get_sig(hs_cell_establish_intro_t *inp, size_t idx)
|
||||
{
|
||||
return TRUNNEL_DYNARRAY_GET(&inp->sig, idx);
|
||||
}
|
||||
|
||||
uint8_t
|
||||
hs_cell_establish_intro_getconst_sig(const hs_cell_establish_intro_t *inp, size_t idx)
|
||||
{
|
||||
return hs_cell_establish_intro_get_sig((hs_cell_establish_intro_t*)inp, idx);
|
||||
}
|
||||
int
|
||||
hs_cell_establish_intro_set_sig(hs_cell_establish_intro_t *inp, size_t idx, uint8_t elt)
|
||||
{
|
||||
TRUNNEL_DYNARRAY_SET(&inp->sig, idx, elt);
|
||||
return 0;
|
||||
}
|
||||
int
|
||||
hs_cell_establish_intro_add_sig(hs_cell_establish_intro_t *inp, uint8_t elt)
|
||||
{
|
||||
#if SIZE_MAX >= UINT16_MAX
|
||||
if (inp->sig.n_ == UINT16_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 *
|
||||
hs_cell_establish_intro_getarray_sig(hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
return inp->sig.elts_;
|
||||
}
|
||||
const uint8_t *
|
||||
hs_cell_establish_intro_getconstarray_sig(const hs_cell_establish_intro_t *inp)
|
||||
{
|
||||
return (const uint8_t *)hs_cell_establish_intro_getarray_sig((hs_cell_establish_intro_t*)inp);
|
||||
}
|
||||
int
|
||||
hs_cell_establish_intro_setlen_sig(hs_cell_establish_intro_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->sig.allocated_,
|
||||
&inp->sig.n_, inp->sig.elts_, newlen,
|
||||
sizeof(inp->sig.elts_[0]), (trunnel_free_fn_t) NULL,
|
||||
&inp->trunnel_error_code_);
|
||||
if (newlen != 0 && newptr == NULL)
|
||||
goto trunnel_alloc_failed;
|
||||
inp->sig.elts_ = newptr;
|
||||
return 0;
|
||||
trunnel_alloc_failed:
|
||||
TRUNNEL_SET_ERROR_CODE(inp);
|
||||
return -1;
|
||||
}
|
||||
const char *
|
||||
hs_cell_establish_intro_check(const hs_cell_establish_intro_t *obj)
|
||||
{
|
||||
if (obj == NULL)
|
||||
return "Object was NULL";
|
||||
if (obj->trunnel_error_code_)
|
||||
return "A set function failed on this object";
|
||||
if (! (obj->auth_key_type == 0 || obj->auth_key_type == 1 || obj->auth_key_type == 2))
|
||||
return "Integer out of bounds";
|
||||
if (TRUNNEL_DYNARRAY_LEN(&obj->auth_key) != obj->auth_key_len)
|
||||
return "Length mismatch for auth_key";
|
||||
{
|
||||
const char *msg;
|
||||
if (NULL != (msg = cell_extension_check(obj->extensions)))
|
||||
return msg;
|
||||
}
|
||||
if (TRUNNEL_DYNARRAY_LEN(&obj->sig) != obj->sig_len)
|
||||
return "Length mismatch for sig";
|
||||
return NULL;
|
||||
}
|
||||
|
||||
ssize_t
|
||||
hs_cell_establish_intro_encoded_len(const hs_cell_establish_intro_t *obj)
|
||||
{
|
||||
ssize_t result = 0;
|
||||
|
||||
if (NULL != hs_cell_establish_intro_check(obj))
|
||||
return -1;
|
||||
|
||||
|
||||
/* Length of u8 auth_key_type IN [0, 1, 2] */
|
||||
result += 1;
|
||||
|
||||
/* Length of u16 auth_key_len */
|
||||
result += 2;
|
||||
|
||||
/* Length of u8 auth_key[auth_key_len] */
|
||||
result += TRUNNEL_DYNARRAY_LEN(&obj->auth_key);
|
||||
|
||||
/* Length of struct cell_extension extensions */
|
||||
result += cell_extension_encoded_len(obj->extensions);
|
||||
|
||||
/* Length of u8 handshake_mac[TRUNNEL_SHA3_256_LEN] */
|
||||
result += TRUNNEL_SHA3_256_LEN;
|
||||
|
||||
/* Length of u16 sig_len */
|
||||
result += 2;
|
||||
|
||||
/* Length of u8 sig[sig_len] */
|
||||
result += TRUNNEL_DYNARRAY_LEN(&obj->sig);
|
||||
return result;
|
||||
}
|
||||
int
|
||||
hs_cell_establish_intro_clear_errors(hs_cell_establish_intro_t *obj)
|
||||
{
|
||||
int r = obj->trunnel_error_code_;
|
||||
obj->trunnel_error_code_ = 0;
|
||||
return r;
|
||||
}
|
||||
ssize_t
|
||||
hs_cell_establish_intro_encode(uint8_t *output, const size_t avail, const hs_cell_establish_intro_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 = hs_cell_establish_intro_encoded_len(obj);
|
||||
#endif
|
||||
|
||||
if (NULL != (msg = hs_cell_establish_intro_check(obj)))
|
||||
goto check_failed;
|
||||
|
||||
#ifdef TRUNNEL_CHECK_ENCODED_LEN
|
||||
trunnel_assert(encoded_len >= 0);
|
||||
#endif
|
||||
|
||||
/* Encode u8 auth_key_type IN [0, 1, 2] */
|
||||
trunnel_assert(written <= avail);
|
||||
if (avail - written < 1)
|
||||
goto truncated;
|
||||
trunnel_set_uint8(ptr, (obj->auth_key_type));
|
||||
written += 1; ptr += 1;
|
||||
|
||||
/* Encode u16 auth_key_len */
|
||||
trunnel_assert(written <= avail);
|
||||
if (avail - written < 2)
|
||||
goto truncated;
|
||||
trunnel_set_uint16(ptr, trunnel_htons(obj->auth_key_len));
|
||||
written += 2; ptr += 2;
|
||||
|
||||
/* Encode u8 auth_key[auth_key_len] */
|
||||
{
|
||||
size_t elt_len = TRUNNEL_DYNARRAY_LEN(&obj->auth_key);
|
||||
trunnel_assert(obj->auth_key_len == elt_len);
|
||||
trunnel_assert(written <= avail);
|
||||
if (avail - written < elt_len)
|
||||
goto truncated;
|
||||
if (elt_len)
|
||||
memcpy(ptr, obj->auth_key.elts_, elt_len);
|
||||
written += elt_len; ptr += elt_len;
|
||||
}
|
||||
|
||||
/* Encode struct cell_extension extensions */
|
||||
trunnel_assert(written <= avail);
|
||||
result = cell_extension_encode(ptr, avail - written, obj->extensions);
|
||||
if (result < 0)
|
||||
goto fail; /* XXXXXXX !*/
|
||||
written += result; ptr += result;
|
||||
|
||||
/* Encode u8 handshake_mac[TRUNNEL_SHA3_256_LEN] */
|
||||
trunnel_assert(written <= avail);
|
||||
if (avail - written < TRUNNEL_SHA3_256_LEN)
|
||||
goto truncated;
|
||||
memcpy(ptr, obj->handshake_mac, TRUNNEL_SHA3_256_LEN);
|
||||
written += TRUNNEL_SHA3_256_LEN; ptr += TRUNNEL_SHA3_256_LEN;
|
||||
|
||||
/* Encode u16 sig_len */
|
||||
trunnel_assert(written <= avail);
|
||||
if (avail - written < 2)
|
||||
goto truncated;
|
||||
trunnel_set_uint16(ptr, trunnel_htons(obj->sig_len));
|
||||
written += 2; ptr += 2;
|
||||
|
||||
/* 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;
|
||||
if (elt_len)
|
||||
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 hs_cell_establish_intro_parse(), but do not allocate the output
|
||||
* object.
|
||||
*/
|
||||
static ssize_t
|
||||
hs_cell_establish_intro_parse_into(hs_cell_establish_intro_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;
|
||||
obj->start_cell = ptr;
|
||||
|
||||
/* Parse u8 auth_key_type IN [0, 1, 2] */
|
||||
CHECK_REMAINING(1, truncated);
|
||||
obj->auth_key_type = (trunnel_get_uint8(ptr));
|
||||
remaining -= 1; ptr += 1;
|
||||
if (! (obj->auth_key_type == 0 || obj->auth_key_type == 1 || obj->auth_key_type == 2))
|
||||
goto fail;
|
||||
|
||||
/* Parse u16 auth_key_len */
|
||||
CHECK_REMAINING(2, truncated);
|
||||
obj->auth_key_len = trunnel_ntohs(trunnel_get_uint16(ptr));
|
||||
remaining -= 2; ptr += 2;
|
||||
|
||||
/* Parse u8 auth_key[auth_key_len] */
|
||||
CHECK_REMAINING(obj->auth_key_len, truncated);
|
||||
TRUNNEL_DYNARRAY_EXPAND(uint8_t, &obj->auth_key, obj->auth_key_len, {});
|
||||
obj->auth_key.n_ = obj->auth_key_len;
|
||||
if (obj->auth_key_len)
|
||||
memcpy(obj->auth_key.elts_, ptr, obj->auth_key_len);
|
||||
ptr += obj->auth_key_len; remaining -= obj->auth_key_len;
|
||||
|
||||
/* Parse struct cell_extension extensions */
|
||||
result = cell_extension_parse(&obj->extensions, ptr, remaining);
|
||||
if (result < 0)
|
||||
goto relay_fail;
|
||||
trunnel_assert((size_t)result <= remaining);
|
||||
remaining -= result; ptr += result;
|
||||
obj->end_mac_fields = ptr;
|
||||
|
||||
/* Parse u8 handshake_mac[TRUNNEL_SHA3_256_LEN] */
|
||||
CHECK_REMAINING(TRUNNEL_SHA3_256_LEN, truncated);
|
||||
memcpy(obj->handshake_mac, ptr, TRUNNEL_SHA3_256_LEN);
|
||||
remaining -= TRUNNEL_SHA3_256_LEN; ptr += TRUNNEL_SHA3_256_LEN;
|
||||
|
||||
/* Parse u16 sig_len */
|
||||
CHECK_REMAINING(2, truncated);
|
||||
obj->sig_len = trunnel_ntohs(trunnel_get_uint16(ptr));
|
||||
remaining -= 2; ptr += 2;
|
||||
obj->end_sig_fields = ptr;
|
||||
|
||||
/* 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;
|
||||
if (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;
|
||||
relay_fail:
|
||||
trunnel_assert(result < 0);
|
||||
return result;
|
||||
trunnel_alloc_failed:
|
||||
return -1;
|
||||
fail:
|
||||
result = -1;
|
||||
return result;
|
||||
}
|
||||
|
||||
ssize_t
|
||||
hs_cell_establish_intro_parse(hs_cell_establish_intro_t **output, const uint8_t *input, const size_t len_in)
|
||||
{
|
||||
ssize_t result;
|
||||
*output = hs_cell_establish_intro_new();
|
||||
if (NULL == *output)
|
||||
return -1;
|
||||
result = hs_cell_establish_intro_parse_into(*output, input, len_in);
|
||||
if (result < 0) {
|
||||
hs_cell_establish_intro_free(*output);
|
||||
*output = NULL;
|
||||
}
|
||||
return result;
|
||||
}
|
||||
hs_cell_intro_established_t *
|
||||
hs_cell_intro_established_new(void)
|
||||
{
|
||||
hs_cell_intro_established_t *val = trunnel_calloc(1, sizeof(hs_cell_intro_established_t));
|
||||
if (NULL == val)
|
||||
return NULL;
|
||||
return val;
|
||||
}
|
||||
|
||||
/** Release all storage held inside 'obj', but do not free 'obj'.
|
||||
*/
|
||||
static void
|
||||
hs_cell_intro_established_clear(hs_cell_intro_established_t *obj)
|
||||
{
|
||||
(void) obj;
|
||||
cell_extension_free(obj->extensions);
|
||||
obj->extensions = NULL;
|
||||
}
|
||||
|
||||
void
|
||||
hs_cell_intro_established_free(hs_cell_intro_established_t *obj)
|
||||
{
|
||||
if (obj == NULL)
|
||||
return;
|
||||
hs_cell_intro_established_clear(obj);
|
||||
trunnel_memwipe(obj, sizeof(hs_cell_intro_established_t));
|
||||
trunnel_free_(obj);
|
||||
}
|
||||
|
||||
struct cell_extension_st *
|
||||
hs_cell_intro_established_get_extensions(hs_cell_intro_established_t *inp)
|
||||
{
|
||||
return inp->extensions;
|
||||
}
|
||||
const struct cell_extension_st *
|
||||
hs_cell_intro_established_getconst_extensions(const hs_cell_intro_established_t *inp)
|
||||
{
|
||||
return hs_cell_intro_established_get_extensions((hs_cell_intro_established_t*) inp);
|
||||
}
|
||||
int
|
||||
hs_cell_intro_established_set_extensions(hs_cell_intro_established_t *inp, struct cell_extension_st *val)
|
||||
{
|
||||
if (inp->extensions && inp->extensions != val)
|
||||
cell_extension_free(inp->extensions);
|
||||
return hs_cell_intro_established_set0_extensions(inp, val);
|
||||
}
|
||||
int
|
||||
hs_cell_intro_established_set0_extensions(hs_cell_intro_established_t *inp, struct cell_extension_st *val)
|
||||
{
|
||||
inp->extensions = val;
|
||||
return 0;
|
||||
}
|
||||
const char *
|
||||
hs_cell_intro_established_check(const hs_cell_intro_established_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;
|
||||
if (NULL != (msg = cell_extension_check(obj->extensions)))
|
||||
return msg;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
ssize_t
|
||||
hs_cell_intro_established_encoded_len(const hs_cell_intro_established_t *obj)
|
||||
{
|
||||
ssize_t result = 0;
|
||||
|
||||
if (NULL != hs_cell_intro_established_check(obj))
|
||||
return -1;
|
||||
|
||||
|
||||
/* Length of struct cell_extension extensions */
|
||||
result += cell_extension_encoded_len(obj->extensions);
|
||||
return result;
|
||||
}
|
||||
int
|
||||
hs_cell_intro_established_clear_errors(hs_cell_intro_established_t *obj)
|
||||
{
|
||||
int r = obj->trunnel_error_code_;
|
||||
obj->trunnel_error_code_ = 0;
|
||||
return r;
|
||||
}
|
||||
ssize_t
|
||||
hs_cell_intro_established_encode(uint8_t *output, const size_t avail, const hs_cell_intro_established_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 = hs_cell_intro_established_encoded_len(obj);
|
||||
#endif
|
||||
|
||||
if (NULL != (msg = hs_cell_intro_established_check(obj)))
|
||||
goto check_failed;
|
||||
|
||||
#ifdef TRUNNEL_CHECK_ENCODED_LEN
|
||||
trunnel_assert(encoded_len >= 0);
|
||||
#endif
|
||||
|
||||
/* Encode struct cell_extension extensions */
|
||||
trunnel_assert(written <= avail);
|
||||
result = cell_extension_encode(ptr, avail - written, obj->extensions);
|
||||
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;
|
||||
|
||||
check_failed:
|
||||
(void)msg;
|
||||
result = -1;
|
||||
goto fail;
|
||||
fail:
|
||||
trunnel_assert(result < 0);
|
||||
return result;
|
||||
}
|
||||
|
||||
/** As hs_cell_intro_established_parse(), but do not allocate the
|
||||
* output object.
|
||||
*/
|
||||
static ssize_t
|
||||
hs_cell_intro_established_parse_into(hs_cell_intro_established_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 struct cell_extension extensions */
|
||||
result = cell_extension_parse(&obj->extensions, ptr, remaining);
|
||||
if (result < 0)
|
||||
goto relay_fail;
|
||||
trunnel_assert((size_t)result <= remaining);
|
||||
remaining -= result; ptr += result;
|
||||
trunnel_assert(ptr + remaining == input + len_in);
|
||||
return len_in - remaining;
|
||||
|
||||
relay_fail:
|
||||
trunnel_assert(result < 0);
|
||||
return result;
|
||||
}
|
||||
|
||||
ssize_t
|
||||
hs_cell_intro_established_parse(hs_cell_intro_established_t **output, const uint8_t *input, const size_t len_in)
|
||||
{
|
||||
ssize_t result;
|
||||
*output = hs_cell_intro_established_new();
|
||||
if (NULL == *output)
|
||||
return -1;
|
||||
result = hs_cell_intro_established_parse_into(*output, input, len_in);
|
||||
if (result < 0) {
|
||||
hs_cell_intro_established_free(*output);
|
||||
*output = NULL;
|
||||
}
|
||||
return result;
|
||||
}
|
||||
@@ -0,0 +1,275 @@
|
||||
/* cell_establish_intro.h -- generated by by Trunnel v1.5.
|
||||
* https://gitweb.torproject.org/trunnel.git
|
||||
* You probably shouldn't edit this file.
|
||||
*/
|
||||
#ifndef TRUNNEL_CELL_ESTABLISH_INTRO_H
|
||||
#define TRUNNEL_CELL_ESTABLISH_INTRO_H
|
||||
|
||||
#include <stdint.h>
|
||||
#include "trunnel.h"
|
||||
|
||||
struct cell_extension_st;
|
||||
#define TRUNNEL_SHA3_256_LEN 32
|
||||
#if !defined(TRUNNEL_OPAQUE) && !defined(TRUNNEL_OPAQUE_HS_CELL_ESTABLISH_INTRO)
|
||||
struct hs_cell_establish_intro_st {
|
||||
const uint8_t *start_cell;
|
||||
uint8_t auth_key_type;
|
||||
uint16_t auth_key_len;
|
||||
TRUNNEL_DYNARRAY_HEAD(, uint8_t) auth_key;
|
||||
struct cell_extension_st *extensions;
|
||||
const uint8_t *end_mac_fields;
|
||||
uint8_t handshake_mac[TRUNNEL_SHA3_256_LEN];
|
||||
uint16_t sig_len;
|
||||
const uint8_t *end_sig_fields;
|
||||
TRUNNEL_DYNARRAY_HEAD(, uint8_t) sig;
|
||||
uint8_t trunnel_error_code_;
|
||||
};
|
||||
#endif
|
||||
typedef struct hs_cell_establish_intro_st hs_cell_establish_intro_t;
|
||||
#if !defined(TRUNNEL_OPAQUE) && !defined(TRUNNEL_OPAQUE_HS_CELL_INTRO_ESTABLISHED)
|
||||
struct hs_cell_intro_established_st {
|
||||
struct cell_extension_st *extensions;
|
||||
uint8_t trunnel_error_code_;
|
||||
};
|
||||
#endif
|
||||
typedef struct hs_cell_intro_established_st hs_cell_intro_established_t;
|
||||
/** Return a newly allocated hs_cell_establish_intro with all elements
|
||||
* set to zero.
|
||||
*/
|
||||
hs_cell_establish_intro_t *hs_cell_establish_intro_new(void);
|
||||
/** Release all storage held by the hs_cell_establish_intro in
|
||||
* 'victim'. (Do nothing if 'victim' is NULL.)
|
||||
*/
|
||||
void hs_cell_establish_intro_free(hs_cell_establish_intro_t *victim);
|
||||
/** Try to parse a hs_cell_establish_intro 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 hs_cell_establish_intro_t. On failure, return -2 if the
|
||||
* input appears truncated, and -1 if the input is otherwise invalid.
|
||||
*/
|
||||
ssize_t hs_cell_establish_intro_parse(hs_cell_establish_intro_t **output, const uint8_t *input, const size_t len_in);
|
||||
/** Return the number of bytes we expect to need to encode the
|
||||
* hs_cell_establish_intro 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 hs_cell_establish_intro_encoded_len(const hs_cell_establish_intro_t *obj);
|
||||
/** Try to encode the hs_cell_establish_intro 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 hs_cell_establish_intro_encode(uint8_t *output, size_t avail, const hs_cell_establish_intro_t *input);
|
||||
/** Check whether the internal state of the hs_cell_establish_intro in
|
||||
* 'obj' is consistent. Return NULL if it is, and a short message if
|
||||
* it is not.
|
||||
*/
|
||||
const char *hs_cell_establish_intro_check(const hs_cell_establish_intro_t *obj);
|
||||
/** Clear any errors that were set on the object 'obj' by its setter
|
||||
* functions. Return true iff errors were cleared.
|
||||
*/
|
||||
int hs_cell_establish_intro_clear_errors(hs_cell_establish_intro_t *obj);
|
||||
/** Return the position for start_cell when we parsed this object
|
||||
*/
|
||||
const uint8_t * hs_cell_establish_intro_get_start_cell(const hs_cell_establish_intro_t *inp);
|
||||
/** Return the value of the auth_key_type field of the
|
||||
* hs_cell_establish_intro_t in 'inp'
|
||||
*/
|
||||
uint8_t hs_cell_establish_intro_get_auth_key_type(hs_cell_establish_intro_t *inp);
|
||||
/** Set the value of the auth_key_type field of the
|
||||
* hs_cell_establish_intro_t in 'inp' to 'val'. Return 0 on success;
|
||||
* return -1 and set the error code on 'inp' on failure.
|
||||
*/
|
||||
int hs_cell_establish_intro_set_auth_key_type(hs_cell_establish_intro_t *inp, uint8_t val);
|
||||
/** Return the value of the auth_key_len field of the
|
||||
* hs_cell_establish_intro_t in 'inp'
|
||||
*/
|
||||
uint16_t hs_cell_establish_intro_get_auth_key_len(hs_cell_establish_intro_t *inp);
|
||||
/** Set the value of the auth_key_len field of the
|
||||
* hs_cell_establish_intro_t in 'inp' to 'val'. Return 0 on success;
|
||||
* return -1 and set the error code on 'inp' on failure.
|
||||
*/
|
||||
int hs_cell_establish_intro_set_auth_key_len(hs_cell_establish_intro_t *inp, uint16_t val);
|
||||
/** Return the length of the dynamic array holding the auth_key field
|
||||
* of the hs_cell_establish_intro_t in 'inp'.
|
||||
*/
|
||||
size_t hs_cell_establish_intro_getlen_auth_key(const hs_cell_establish_intro_t *inp);
|
||||
/** Return the element at position 'idx' of the dynamic array field
|
||||
* auth_key of the hs_cell_establish_intro_t in 'inp'.
|
||||
*/
|
||||
uint8_t hs_cell_establish_intro_get_auth_key(hs_cell_establish_intro_t *inp, size_t idx);
|
||||
/** As hs_cell_establish_intro_get_auth_key, but take and return a
|
||||
* const pointer
|
||||
*/
|
||||
uint8_t hs_cell_establish_intro_getconst_auth_key(const hs_cell_establish_intro_t *inp, size_t idx);
|
||||
/** Change the element at position 'idx' of the dynamic array field
|
||||
* auth_key of the hs_cell_establish_intro_t in 'inp', so that it will
|
||||
* hold the value 'elt'.
|
||||
*/
|
||||
int hs_cell_establish_intro_set_auth_key(hs_cell_establish_intro_t *inp, size_t idx, uint8_t elt);
|
||||
/** Append a new element 'elt' to the dynamic array field auth_key of
|
||||
* the hs_cell_establish_intro_t in 'inp'.
|
||||
*/
|
||||
int hs_cell_establish_intro_add_auth_key(hs_cell_establish_intro_t *inp, uint8_t elt);
|
||||
/** Return a pointer to the variable-length array field auth_key of
|
||||
* 'inp'.
|
||||
*/
|
||||
uint8_t * hs_cell_establish_intro_getarray_auth_key(hs_cell_establish_intro_t *inp);
|
||||
/** As hs_cell_establish_intro_get_auth_key, but take and return a
|
||||
* const pointer
|
||||
*/
|
||||
const uint8_t * hs_cell_establish_intro_getconstarray_auth_key(const hs_cell_establish_intro_t *inp);
|
||||
/** Change the length of the variable-length array field auth_key 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 hs_cell_establish_intro_setlen_auth_key(hs_cell_establish_intro_t *inp, size_t newlen);
|
||||
/** Return the value of the extensions field of the
|
||||
* hs_cell_establish_intro_t in 'inp'
|
||||
*/
|
||||
struct cell_extension_st * hs_cell_establish_intro_get_extensions(hs_cell_establish_intro_t *inp);
|
||||
/** As hs_cell_establish_intro_get_extensions, but take and return a
|
||||
* const pointer
|
||||
*/
|
||||
const struct cell_extension_st * hs_cell_establish_intro_getconst_extensions(const hs_cell_establish_intro_t *inp);
|
||||
/** Set the value of the extensions field of the
|
||||
* hs_cell_establish_intro_t in 'inp' to 'val'. Free the old value if
|
||||
* any. Steals the referenceto 'val'.Return 0 on success; return -1
|
||||
* and set the error code on 'inp' on failure.
|
||||
*/
|
||||
int hs_cell_establish_intro_set_extensions(hs_cell_establish_intro_t *inp, struct cell_extension_st *val);
|
||||
/** As hs_cell_establish_intro_set_extensions, but does not free the
|
||||
* previous value.
|
||||
*/
|
||||
int hs_cell_establish_intro_set0_extensions(hs_cell_establish_intro_t *inp, struct cell_extension_st *val);
|
||||
/** Return the position for end_mac_fields when we parsed this object
|
||||
*/
|
||||
const uint8_t * hs_cell_establish_intro_get_end_mac_fields(const hs_cell_establish_intro_t *inp);
|
||||
/** Return the (constant) length of the array holding the
|
||||
* handshake_mac field of the hs_cell_establish_intro_t in 'inp'.
|
||||
*/
|
||||
size_t hs_cell_establish_intro_getlen_handshake_mac(const hs_cell_establish_intro_t *inp);
|
||||
/** Return the element at position 'idx' of the fixed array field
|
||||
* handshake_mac of the hs_cell_establish_intro_t in 'inp'.
|
||||
*/
|
||||
uint8_t hs_cell_establish_intro_get_handshake_mac(hs_cell_establish_intro_t *inp, size_t idx);
|
||||
/** As hs_cell_establish_intro_get_handshake_mac, but take and return
|
||||
* a const pointer
|
||||
*/
|
||||
uint8_t hs_cell_establish_intro_getconst_handshake_mac(const hs_cell_establish_intro_t *inp, size_t idx);
|
||||
/** Change the element at position 'idx' of the fixed array field
|
||||
* handshake_mac of the hs_cell_establish_intro_t in 'inp', so that it
|
||||
* will hold the value 'elt'.
|
||||
*/
|
||||
int hs_cell_establish_intro_set_handshake_mac(hs_cell_establish_intro_t *inp, size_t idx, uint8_t elt);
|
||||
/** Return a pointer to the TRUNNEL_SHA3_256_LEN-element array field
|
||||
* handshake_mac of 'inp'.
|
||||
*/
|
||||
uint8_t * hs_cell_establish_intro_getarray_handshake_mac(hs_cell_establish_intro_t *inp);
|
||||
/** As hs_cell_establish_intro_get_handshake_mac, but take and return
|
||||
* a const pointer
|
||||
*/
|
||||
const uint8_t * hs_cell_establish_intro_getconstarray_handshake_mac(const hs_cell_establish_intro_t *inp);
|
||||
/** Return the value of the sig_len field of the
|
||||
* hs_cell_establish_intro_t in 'inp'
|
||||
*/
|
||||
uint16_t hs_cell_establish_intro_get_sig_len(hs_cell_establish_intro_t *inp);
|
||||
/** Set the value of the sig_len field of the
|
||||
* hs_cell_establish_intro_t in 'inp' to 'val'. Return 0 on success;
|
||||
* return -1 and set the error code on 'inp' on failure.
|
||||
*/
|
||||
int hs_cell_establish_intro_set_sig_len(hs_cell_establish_intro_t *inp, uint16_t val);
|
||||
/** Return the position for end_sig_fields when we parsed this object
|
||||
*/
|
||||
const uint8_t * hs_cell_establish_intro_get_end_sig_fields(const hs_cell_establish_intro_t *inp);
|
||||
/** Return the length of the dynamic array holding the sig field of
|
||||
* the hs_cell_establish_intro_t in 'inp'.
|
||||
*/
|
||||
size_t hs_cell_establish_intro_getlen_sig(const hs_cell_establish_intro_t *inp);
|
||||
/** Return the element at position 'idx' of the dynamic array field
|
||||
* sig of the hs_cell_establish_intro_t in 'inp'.
|
||||
*/
|
||||
uint8_t hs_cell_establish_intro_get_sig(hs_cell_establish_intro_t *inp, size_t idx);
|
||||
/** As hs_cell_establish_intro_get_sig, but take and return a const
|
||||
* pointer
|
||||
*/
|
||||
uint8_t hs_cell_establish_intro_getconst_sig(const hs_cell_establish_intro_t *inp, size_t idx);
|
||||
/** Change the element at position 'idx' of the dynamic array field
|
||||
* sig of the hs_cell_establish_intro_t in 'inp', so that it will hold
|
||||
* the value 'elt'.
|
||||
*/
|
||||
int hs_cell_establish_intro_set_sig(hs_cell_establish_intro_t *inp, size_t idx, uint8_t elt);
|
||||
/** Append a new element 'elt' to the dynamic array field sig of the
|
||||
* hs_cell_establish_intro_t in 'inp'.
|
||||
*/
|
||||
int hs_cell_establish_intro_add_sig(hs_cell_establish_intro_t *inp, uint8_t elt);
|
||||
/** Return a pointer to the variable-length array field sig of 'inp'.
|
||||
*/
|
||||
uint8_t * hs_cell_establish_intro_getarray_sig(hs_cell_establish_intro_t *inp);
|
||||
/** As hs_cell_establish_intro_get_sig, but take and return a const
|
||||
* pointer
|
||||
*/
|
||||
const uint8_t * hs_cell_establish_intro_getconstarray_sig(const hs_cell_establish_intro_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 hs_cell_establish_intro_setlen_sig(hs_cell_establish_intro_t *inp, size_t newlen);
|
||||
/** Return a newly allocated hs_cell_intro_established with all
|
||||
* elements set to zero.
|
||||
*/
|
||||
hs_cell_intro_established_t *hs_cell_intro_established_new(void);
|
||||
/** Release all storage held by the hs_cell_intro_established in
|
||||
* 'victim'. (Do nothing if 'victim' is NULL.)
|
||||
*/
|
||||
void hs_cell_intro_established_free(hs_cell_intro_established_t *victim);
|
||||
/** Try to parse a hs_cell_intro_established 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 hs_cell_intro_established_t. On failure, return -2
|
||||
* if the input appears truncated, and -1 if the input is otherwise
|
||||
* invalid.
|
||||
*/
|
||||
ssize_t hs_cell_intro_established_parse(hs_cell_intro_established_t **output, const uint8_t *input, const size_t len_in);
|
||||
/** Return the number of bytes we expect to need to encode the
|
||||
* hs_cell_intro_established 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 hs_cell_intro_established_encoded_len(const hs_cell_intro_established_t *obj);
|
||||
/** Try to encode the hs_cell_intro_established 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 hs_cell_intro_established_encode(uint8_t *output, size_t avail, const hs_cell_intro_established_t *input);
|
||||
/** Check whether the internal state of the hs_cell_intro_established
|
||||
* in 'obj' is consistent. Return NULL if it is, and a short message
|
||||
* if it is not.
|
||||
*/
|
||||
const char *hs_cell_intro_established_check(const hs_cell_intro_established_t *obj);
|
||||
/** Clear any errors that were set on the object 'obj' by its setter
|
||||
* functions. Return true iff errors were cleared.
|
||||
*/
|
||||
int hs_cell_intro_established_clear_errors(hs_cell_intro_established_t *obj);
|
||||
/** Return the value of the extensions field of the
|
||||
* hs_cell_intro_established_t in 'inp'
|
||||
*/
|
||||
struct cell_extension_st * hs_cell_intro_established_get_extensions(hs_cell_intro_established_t *inp);
|
||||
/** As hs_cell_intro_established_get_extensions, but take and return a
|
||||
* const pointer
|
||||
*/
|
||||
const struct cell_extension_st * hs_cell_intro_established_getconst_extensions(const hs_cell_intro_established_t *inp);
|
||||
/** Set the value of the extensions field of the
|
||||
* hs_cell_intro_established_t in 'inp' to 'val'. Free the old value
|
||||
* if any. Steals the referenceto 'val'.Return 0 on success; return -1
|
||||
* and set the error code on 'inp' on failure.
|
||||
*/
|
||||
int hs_cell_intro_established_set_extensions(hs_cell_intro_established_t *inp, struct cell_extension_st *val);
|
||||
/** As hs_cell_intro_established_set_extensions, but does not free the
|
||||
* previous value.
|
||||
*/
|
||||
int hs_cell_intro_established_set0_extensions(hs_cell_intro_established_t *inp, struct cell_extension_st *val);
|
||||
|
||||
|
||||
#endif
|
||||
@@ -0,0 +1,41 @@
|
||||
/*
|
||||
* This contains the definition of the ESTABLISH_INTRO and INTRO_ESTABLISHED
|
||||
* cell for onion service version 3 and onward. The following format is
|
||||
* specified in proposal 224 section 3.1.
|
||||
*/
|
||||
|
||||
extern struct cell_extension;
|
||||
|
||||
const TRUNNEL_SHA3_256_LEN = 32;
|
||||
|
||||
/* ESTABLISH_INTRO payload. See details in section 3.1.1 */
|
||||
struct hs_cell_establish_intro {
|
||||
/* Indicate the start of the handshake authentication data. */
|
||||
@ptr start_cell;
|
||||
|
||||
/* Authentication key material. */
|
||||
u8 auth_key_type IN [0x00, 0x01, 0x02];
|
||||
u16 auth_key_len;
|
||||
u8 auth_key[auth_key_len];
|
||||
|
||||
/* Extension(s). Reserved fields. */
|
||||
struct cell_extension extensions;
|
||||
@ptr end_mac_fields;
|
||||
|
||||
/* Handshake MAC. */
|
||||
u8 handshake_mac[TRUNNEL_SHA3_256_LEN];
|
||||
|
||||
/* Signature */
|
||||
u16 sig_len;
|
||||
/* Indicate the end of the handshake authentication data. */
|
||||
@ptr end_sig_fields;
|
||||
u8 sig[sig_len];
|
||||
};
|
||||
|
||||
/* INTRO_ESTABLISHED payload which is an acknowledge of the ESTABLISH_INTRO
|
||||
* cell. For legacy node, this payload is empty so the following only applies
|
||||
* to version >= 3. */
|
||||
struct hs_cell_intro_established {
|
||||
/* Extension(s). Reserved fields. */
|
||||
struct cell_extension extensions;
|
||||
};
|
||||
@@ -1,4 +1,3 @@
|
||||
|
||||
noinst_LIBRARIES += \
|
||||
src/trunnel/libor-trunnel.a
|
||||
|
||||
@@ -18,15 +17,19 @@ TRUNNELSOURCES = \
|
||||
src/ext/trunnel/trunnel.c \
|
||||
src/trunnel/ed25519_cert.c \
|
||||
src/trunnel/link_handshake.c \
|
||||
src/trunnel/pwbox.c
|
||||
src/trunnel/pwbox.c \
|
||||
src/trunnel/hs/cell_common.c \
|
||||
src/trunnel/hs/cell_establish_intro.c
|
||||
|
||||
TRUNNELHEADERS = \
|
||||
src/ext/trunnel/trunnel.h \
|
||||
src/ext/trunnel/trunnel-impl.h \
|
||||
src/trunnel/trunnel-local.h \
|
||||
src/trunnel/trunnel-local.h \
|
||||
src/trunnel/ed25519_cert.h \
|
||||
src/trunnel/link_handshake.h \
|
||||
src/trunnel/pwbox.h
|
||||
src/trunnel/link_handshake.h \
|
||||
src/trunnel/pwbox.h \
|
||||
src/trunnel/hs/cell_common.h \
|
||||
src/trunnel/hs/cell_establish_intro.h
|
||||
|
||||
src_trunnel_libor_trunnel_a_SOURCES = $(TRUNNELSOURCES)
|
||||
src_trunnel_libor_trunnel_a_CPPFLAGS = -DTRUNNEL_LOCAL_H $(AM_CPPFLAGS)
|
||||
|
||||
Reference in New Issue
Block a user