/* common S/MIME checks */
static int purpose_smime(const X509 *x, int ca)
{
if (xku_reject(x, XKU_SMIME))
return 0;
if (ca) {
int ca_ret;
ca_ret = check_ca(x);
if (!ca_ret)
return 0;
/* check nsCertType if present */
if (ca_ret != 5 || x->ex_nscert & NS_SMIME_CA)
return ca_ret;
else
return 0;
}
if (x->ex_flags & EXFLAG_NSCERT) {
if (x->ex_nscert & NS_SMIME)
return 1;
/* Workaround for some buggy certificates */
if (x->ex_nscert & NS_SSL_CLIENT)
return 2;
return 0;
}
return 1;
}
static int check_purpose_ssl_client(const X509_PURPOSE *xp, const X509 *x, int ca)
{
if(xku_reject(x,XKU_SSL_CLIENT)) return 0;
if(ca) return check_ssl_ca(x);
/* We need to do digital signatures with it */
if(ku_reject(x,KU_DIGITAL_SIGNATURE)) return 0;
/* nsCertType if present should allow SSL client use */
if(ns_reject(x, NS_SSL_CLIENT)) return 0;
return 1;
}
static int check_purpose_ssl_server(const X509_PURPOSE *xp, const X509 *x, int ca)
{
if(xku_reject(x,XKU_SSL_SERVER|XKU_SGC)) return 0;
if(ca) return check_ssl_ca(x);
if(ns_reject(x, NS_SSL_SERVER)) return 0;
if(ku_reject(x, KU_TLS)) return 0;
return 1;
}
static int check_purpose_ssl_server(const X509_PURPOSE *xp, const X509 *x, int ca)
{
if(xku_reject(x,XKU_SSL_SERVER|XKU_SGC)) return 0;
if(ca) return check_ssl_ca(x);
if(ns_reject(x, NS_SSL_SERVER)) return 0;
/* Now as for keyUsage: we'll at least need to sign OR encipher */
if(ku_reject(x, KU_DIGITAL_SIGNATURE|KU_KEY_ENCIPHERMENT)) return 0;
return 1;
}
