static void x509v3_cache_extensions(X509 *x)
{
BASIC_CONSTRAINTS *bs;
PROXY_CERT_INFO_EXTENSION *pci;
ASN1_BIT_STRING *usage;
ASN1_BIT_STRING *ns;
EXTENDED_KEY_USAGE *extusage;
X509_EXTENSION *ex;
int i;
if(x->ex_flags & EXFLAG_SET) return;
#ifndef OPENSSL_NO_SHA
X509_digest(x, EVP_sha1(), x->sha1_hash, NULL);
#endif
/* Does subject name match issuer ? */
if(!X509_NAME_cmp(X509_get_subject_name(x), X509_get_issuer_name(x)))
x->ex_flags |= EXFLAG_SS;
/* V1 should mean no extensions ... */
if(!X509_get_version(x)) x->ex_flags |= EXFLAG_V1;
/* Handle basic constraints */
if((bs=X509_get_ext_d2i(x, NID_basic_constraints, NULL, NULL))) {
if(bs->ca) x->ex_flags |= EXFLAG_CA;
if(bs->pathlen) {
if((bs->pathlen->type == V_ASN1_NEG_INTEGER)
|| !bs->ca) {
x->ex_flags |= EXFLAG_INVALID;
x->ex_pathlen = 0;
} else x->ex_pathlen = ASN1_INTEGER_get(bs->pathlen);
} else x->ex_pathlen = -1;
BASIC_CONSTRAINTS_free(bs);
x->ex_flags |= EXFLAG_BCONS;
}
/* Handle proxy certificates */
if((pci=X509_get_ext_d2i(x, NID_proxyCertInfo, NULL, NULL))) {
if (x->ex_flags & EXFLAG_CA
|| X509_get_ext_by_NID(x, NID_subject_alt_name, 0) >= 0
|| X509_get_ext_by_NID(x, NID_issuer_alt_name, 0) >= 0) {
x->ex_flags |= EXFLAG_INVALID;
}
if (pci->pcPathLengthConstraint) {
x->ex_pcpathlen =
ASN1_INTEGER_get(pci->pcPathLengthConstraint);
} else x->ex_pcpathlen = -1;
PROXY_CERT_INFO_EXTENSION_free(pci);
x->ex_flags |= EXFLAG_PROXY;
}
/* Handle key usage */
if((usage=X509_get_ext_d2i(x, NID_key_usage, NULL, NULL))) {
if(usage->length > 0) {
x->ex_kusage = usage->data[0];
if(usage->length > 1)
x->ex_kusage |= usage->data[1] << 8;
} else x->ex_kusage = 0;
x->ex_flags |= EXFLAG_KUSAGE;
ASN1_BIT_STRING_free(usage);
}
x->ex_xkusage = 0;
if((extusage=X509_get_ext_d2i(x, NID_ext_key_usage, NULL, NULL))) {
x->ex_flags |= EXFLAG_XKUSAGE;
for(i = 0; i < sk_ASN1_OBJECT_num(extusage); i++) {
switch(OBJ_obj2nid(sk_ASN1_OBJECT_value(extusage,i))) {
case NID_server_auth:
x->ex_xkusage |= XKU_SSL_SERVER;
break;
case NID_client_auth:
x->ex_xkusage |= XKU_SSL_CLIENT;
break;
case NID_email_protect:
x->ex_xkusage |= XKU_SMIME;
break;
case NID_code_sign:
x->ex_xkusage |= XKU_CODE_SIGN;
break;
case NID_ms_sgc:
case NID_ns_sgc:
x->ex_xkusage |= XKU_SGC;
break;
case NID_OCSP_sign:
x->ex_xkusage |= XKU_OCSP_SIGN;
break;
case NID_time_stamp:
x->ex_xkusage |= XKU_TIMESTAMP;
break;
case NID_dvcs:
x->ex_xkusage |= XKU_DVCS;
break;
}
}
sk_ASN1_OBJECT_pop_free(extusage, ASN1_OBJECT_free);
}
if((ns=X509_get_ext_d2i(x, NID_netscape_cert_type, NULL, NULL))) {
if(ns->length > 0) x->ex_nscert = ns->data[0];
else x->ex_nscert = 0;
x->ex_flags |= EXFLAG_NSCERT;
ASN1_BIT_STRING_free(ns);
}
x->skid =X509_get_ext_d2i(x, NID_subject_key_identifier, NULL, NULL);
x->akid =X509_get_ext_d2i(x, NID_authority_key_identifier, NULL, NULL);
for (i = 0; i < X509_get_ext_count(x); i++)
{
ex = X509_get_ext(x, i);
if (!X509_EXTENSION_get_critical(ex))
continue;
if (!X509_supported_extension(ex))
{
x->ex_flags |= EXFLAG_CRITICAL;
break;
}
}
x->ex_flags |= EXFLAG_SET;
}
static int openssl_xext_support(lua_State*L)
{
static const int supported_nids[] =
{
NID_netscape_cert_type, /* 71 */
NID_key_usage, /* 83 */
NID_subject_alt_name, /* 85 */
NID_basic_constraints, /* 87 */
NID_certificate_policies, /* 89 */
NID_ext_key_usage, /* 126 */
#ifndef OPENSSL_NO_RFC3779
NID_sbgp_ipAddrBlock, /* 290 */
NID_sbgp_autonomousSysNum, /* 291 */
#endif
NID_policy_constraints, /* 401 */
NID_proxyCertInfo, /* 663 */
NID_name_constraints, /* 666 */
NID_policy_mappings, /* 747 */
NID_inhibit_any_policy /* 748 */
};
if (lua_isnoneornil(L, 1))
{
int count = sizeof(supported_nids) / sizeof(int);
int i, nid;
lua_newtable(L);
for (i = 0; i < count; i++)
{
nid = supported_nids[i];
lua_newtable(L);
lua_pushstring(L, OBJ_nid2ln(nid));
lua_setfield(L, -2, "lname");
lua_pushstring(L, OBJ_nid2sn(nid));
lua_setfield(L, -2, "sname");
lua_pushinteger(L, nid);
lua_setfield(L, -2, "nid");
lua_rawseti(L, -2, i + 1);
};
return 1;
}
else if (auxiliar_isclass(L, "openssl.x509_extension", 1))
{
X509_EXTENSION* ext = CHECK_OBJECT(1, X509_EXTENSION, "openssl.x509_extension");
int ret = X509_supported_extension(ext);
lua_pushboolean(L, ret);
return 1;
}
else
{
int i;
int ex_nid = openssl_get_nid(L, 1);
if (ex_nid == NID_undef)
return 0;
for (i = 0; i < sizeof(supported_nids) / sizeof(int); i++)
{
if (supported_nids[i] == ex_nid)
break;
}
lua_pushboolean(L, i < sizeof(supported_nids) / sizeof(int));
return 1;
}
}