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Check rng return value when generating COOKIE2 during MOBIKE

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This commit is contained in:
Tobias Brunner
2012-07-16 14:53:35 +02:00
committed by Martin Willi
parent 0c096e9bb5
commit 504918348d
1 changed files with 11 additions and 6 deletions
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src/libcharon/sa/ikev2/tasks/ike_mobike.c
+11 -6
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@@ -227,18 +227,20 @@ static void build_address_list(private_ike_mobike_t *this, message_t *message)
/**
* build a cookie and add it to the message
*/
static void build_cookie(private_ike_mobike_t *this, message_t *message)
static bool build_cookie(private_ike_mobike_t *this, message_t *message)
{
rng_t *rng;
chunk_free(&this->cookie2);
rng = lib->crypto->create_rng(lib->crypto, RNG_STRONG);
if (rng)
if (!rng || !rng->allocate_bytes(rng, COOKIE2_SIZE, &this->cookie2))
{
rng->allocate_bytes(rng, COOKIE2_SIZE, &this->cookie2);
rng->destroy(rng);
message->add_notify(message, FALSE, COOKIE2, this->cookie2);
DESTROY_IF(rng);
return FALSE;
}
message->add_notify(message, FALSE, COOKIE2, this->cookie2);
rng->destroy(rng);
return TRUE;
}
/**
@@ -358,7 +360,10 @@ METHOD(task_t, build_i, status_t,
{
message->add_notify(message, FALSE, UPDATE_SA_ADDRESSES,
chunk_empty);
build_cookie(this, message);
if (!build_cookie(this, message))
{
return FAILED;
}
update_children(this);
}
if (this->address && !this->check)