/* The DTLS Generate Cookie callback
* return : number of bytes copied into buf, or error
*/
int EmbedGenerateCookie(CYASSL* ssl, byte *buf, int sz, void *ctx)
{
int sd = ssl->wfd;
struct sockaddr_storage peer;
XSOCKLENT peerSz = sizeof(peer);
byte digest[SHA_DIGEST_SIZE];
int ret = 0;
(void)ctx;
XMEMSET(&peer, 0, sizeof(peer));
if (getpeername(sd, (struct sockaddr*)&peer, &peerSz) != 0) {
CYASSL_MSG("getpeername failed in EmbedGenerateCookie");
return GEN_COOKIE_E;
}
ret = ShaHash((byte*)&peer, peerSz, digest);
if (ret != 0)
return ret;
if (sz > SHA_DIGEST_SIZE)
sz = SHA_DIGEST_SIZE;
XMEMCPY(buf, digest, sz);
return sz;
}
int wc_ShaHash(const byte* data, word32 sz, byte* out)
{
return ShaHash(data, sz, out);
}