mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-13 14:43:46 +01:00
8e2854372d
Put all the possible assert() we can do on a client introduction circuit in one helper function to make sure it is valid and usable. It is disabled for now so gcc doesn't complain that we have a unused function. Signed-off-by: David Goulet <dgoulet@torproject.org>
111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
/* Copyright (c) 2017, The Tor Project, Inc. */
|
|
/* See LICENSE for licensing information */
|
|
|
|
/**
|
|
* \file hs_ident.c
|
|
* \brief Contains circuit and connection identifier code for the whole HS
|
|
* subsytem.
|
|
**/
|
|
|
|
#include "hs_ident.h"
|
|
|
|
/* Return a newly allocated circuit identifier. The given public key is copied
|
|
* identity_pk into the identifier. */
|
|
hs_ident_circuit_t *
|
|
hs_ident_circuit_new(const ed25519_public_key_t *identity_pk,
|
|
hs_ident_circuit_type_t circuit_type)
|
|
{
|
|
tor_assert(circuit_type == HS_IDENT_CIRCUIT_INTRO ||
|
|
circuit_type == HS_IDENT_CIRCUIT_RENDEZVOUS);
|
|
hs_ident_circuit_t *ident = tor_malloc_zero(sizeof(*ident));
|
|
ed25519_pubkey_copy(&ident->identity_pk, identity_pk);
|
|
ident->circuit_type = circuit_type;
|
|
return ident;
|
|
}
|
|
|
|
/* Free the given circuit identifier. */
|
|
void
|
|
hs_ident_circuit_free(hs_ident_circuit_t *ident)
|
|
{
|
|
if (ident == NULL) {
|
|
return;
|
|
}
|
|
memwipe(ident, 0, sizeof(hs_ident_circuit_t));
|
|
tor_free(ident);
|
|
}
|
|
|
|
/* For a given circuit identifier src, return a newly allocated copy of it.
|
|
* This can't fail. */
|
|
hs_ident_circuit_t *
|
|
hs_ident_circuit_dup(const hs_ident_circuit_t *src)
|
|
{
|
|
hs_ident_circuit_t *ident = tor_malloc_zero(sizeof(*ident));
|
|
memcpy(ident, src, sizeof(*ident));
|
|
return ident;
|
|
}
|
|
|
|
/* For a given directory connection identifier src, return a newly allocated
|
|
* copy of it. This can't fail. */
|
|
hs_ident_dir_conn_t *
|
|
hs_ident_dir_conn_dup(const hs_ident_dir_conn_t *src)
|
|
{
|
|
hs_ident_dir_conn_t *ident = tor_malloc_zero(sizeof(*ident));
|
|
memcpy(ident, src, sizeof(*ident));
|
|
return ident;
|
|
}
|
|
|
|
/* Free the given directory connection identifier. */
|
|
void
|
|
hs_ident_dir_conn_free(hs_ident_dir_conn_t *ident)
|
|
{
|
|
if (ident == NULL) {
|
|
return;
|
|
}
|
|
memwipe(ident, 0, sizeof(hs_ident_dir_conn_t));
|
|
tor_free(ident);
|
|
}
|
|
|
|
/* Return a newly allocated edge connection identifier. The given public key
|
|
* identity_pk is copied into the identifier. */
|
|
hs_ident_edge_conn_t *
|
|
hs_ident_edge_conn_new(const ed25519_public_key_t *identity_pk)
|
|
{
|
|
hs_ident_edge_conn_t *ident = tor_malloc_zero(sizeof(*ident));
|
|
ed25519_pubkey_copy(&ident->identity_pk, identity_pk);
|
|
return ident;
|
|
}
|
|
|
|
/* Free the given edge connection identifier. */
|
|
void
|
|
hs_ident_edge_conn_free(hs_ident_edge_conn_t *ident)
|
|
{
|
|
if (ident == NULL) {
|
|
return;
|
|
}
|
|
memwipe(ident, 0, sizeof(hs_ident_edge_conn_t));
|
|
tor_free(ident);
|
|
}
|
|
|
|
/* Return true if the given ident is valid for an introduction circuit. */
|
|
int
|
|
hs_ident_intro_circ_is_valid(const hs_ident_circuit_t *ident)
|
|
{
|
|
if (ident == NULL) {
|
|
goto invalid;
|
|
}
|
|
|
|
if (ed25519_public_key_is_zero(&ident->identity_pk)) {
|
|
goto invalid;
|
|
}
|
|
|
|
if (ed25519_public_key_is_zero(&ident->intro_auth_pk)) {
|
|
goto invalid;
|
|
}
|
|
|
|
/* Valid. */
|
|
return 1;
|
|
invalid:
|
|
return 0;
|
|
}
|
|
|