/*
* RADIUS message processing
- * Copyright (c) 2002-2009, 2011-2014, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2002-2009, 2011-2015, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
{ RADIUS_ATTR_USER_PASSWORD, "User-Password", RADIUS_ATTR_UNDIST },
{ RADIUS_ATTR_NAS_IP_ADDRESS, "NAS-IP-Address", RADIUS_ATTR_IP },
{ RADIUS_ATTR_NAS_PORT, "NAS-Port", RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_SERVICE_TYPE, "Service-Type", RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_FRAMED_IP_ADDRESS, "Framed-IP-Address", RADIUS_ATTR_IP },
{ RADIUS_ATTR_FRAMED_MTU, "Framed-MTU", RADIUS_ATTR_INT32 },
{ RADIUS_ATTR_REPLY_MESSAGE, "Reply-Message", RADIUS_ATTR_TEXT },
{ RADIUS_ATTR_STATE, "State", RADIUS_ATTR_UNDIST },
RADIUS_ATTR_INT32 },
{ RADIUS_ATTR_EVENT_TIMESTAMP, "Event-Timestamp",
RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_EGRESS_VLANID, "EGRESS-VLANID", RADIUS_ATTR_HEXDUMP },
{ RADIUS_ATTR_NAS_PORT_TYPE, "NAS-Port-Type", RADIUS_ATTR_INT32 },
{ RADIUS_ATTR_TUNNEL_TYPE, "Tunnel-Type", RADIUS_ATTR_HEXDUMP },
{ RADIUS_ATTR_TUNNEL_MEDIUM_TYPE, "Tunnel-Medium-Type",
int radius_msg_verify_das_req(struct radius_msg *msg, const u8 *secret,
- size_t secret_len)
+ size_t secret_len,
+ int require_message_authenticator)
{
const u8 *addr[4];
size_t len[4];
}
if (attr == NULL) {
- /* Message-Authenticator is MAY; not required */
+ if (require_message_authenticator) {
+ wpa_printf(MSG_WARNING,
+ "Missing Message-Authenticator attribute in RADIUS message");
+ return 1;
+ }
return 0;
}
attr = (struct radius_attr_hdr *) pos;
- if (pos + attr->length > end || attr->length < sizeof(*attr))
+ if (attr->length > end - pos || attr->length < sizeof(*attr))
goto fail;
/* TODO: check that attr->length is suitable for attr->type */
os_memcpy(msg->hdr->authenticator, req_auth,
sizeof(msg->hdr->authenticator));
}
- hmac_md5(secret, secret_len, wpabuf_head(msg->buf),
- wpabuf_len(msg->buf), auth);
+ if (hmac_md5(secret, secret_len, wpabuf_head(msg->buf),
+ wpabuf_len(msg->buf), auth) < 0)
+ return 1;
os_memcpy(attr + 1, orig, MD5_MAC_LEN);
if (req_auth) {
os_memcpy(msg->hdr->authenticator, orig_authenticator,
len[2] = wpabuf_len(msg->buf) - sizeof(struct radius_hdr);
addr[3] = secret;
len[3] = secret_len;
- md5_vector(4, addr, len, hash);
- if (os_memcmp_const(hash, msg->hdr->authenticator, MD5_MAC_LEN) != 0) {
+ if (md5_vector(4, addr, len, hash) < 0 ||
+ os_memcmp_const(hash, msg->hdr->authenticator, MD5_MAC_LEN) != 0) {
wpa_printf(MSG_INFO, "Response Authenticator invalid!");
return 1;
}
/* Create Request Authenticator. The value should be unique over the lifetime
* of the shared secret between authenticator and authentication server.
- * Use one-way MD5 hash calculated from current timestamp and some data given
- * by the caller. */
-void radius_msg_make_authenticator(struct radius_msg *msg,
- const u8 *data, size_t len)
+ */
+int radius_msg_make_authenticator(struct radius_msg *msg)
{
- struct os_time tv;
- long int l;
- const u8 *addr[3];
- size_t elen[3];
-
- os_get_time(&tv);
- l = os_random();
- addr[0] = (u8 *) &tv;
- elen[0] = sizeof(tv);
- addr[1] = data;
- elen[1] = len;
- addr[2] = (u8 *) &l;
- elen[2] = sizeof(l);
- md5_vector(3, addr, elen, msg->hdr->authenticator);
+ return os_get_random((u8 *) &msg->hdr->authenticator,
+ sizeof(msg->hdr->authenticator));
}
addr[1] = pos - MD5_MAC_LEN;
elen[1] = MD5_MAC_LEN;
}
- md5_vector(first ? 3 : 2, addr, elen, hash);
+ if (md5_vector(first ? 3 : 2, addr, elen, hash) < 0) {
+ os_free(plain);
+ return NULL;
+ }
first = 0;
for (i = 0; i < MD5_MAC_LEN; i++)
vhdr = (struct radius_attr_vendor *) pos;
vhdr->vendor_type = RADIUS_VENDOR_ATTR_MS_MPPE_SEND_KEY;
pos = (u8 *) (vhdr + 1);
- salt = os_random() | 0x8000;
+ if (os_get_random((u8 *) &salt, sizeof(salt)) < 0) {
+ os_free(buf);
+ return 0;
+ }
+ salt |= 0x8000;
WPA_PUT_BE16(pos, salt);
pos += 2;
encrypt_ms_key(send_key, send_key_len, salt, req_authenticator, secret,
};
+static int cmp_int(const void *a, const void *b)
+{
+ int x, y;
+
+ x = *((int *) a);
+ y = *((int *) b);
+ return (x - y);
+}
+
+
/**
* radius_msg_get_vlanid - Parse RADIUS attributes for VLAN tunnel information
+ * The k tagged vlans found are sorted by vlan_id and stored in the first k
+ * items of tagged.
+ *
* @msg: RADIUS message
- * Returns: VLAN ID for the first tunnel configuration or 0 if none is found
+ * @untagged: Pointer to store untagged vid
+ * @numtagged: Size of tagged
+ * @tagged: Pointer to store tagged list
+ *
+ * Returns: 0 if neither tagged nor untagged configuration is found, 1 otherwise
*/
-int radius_msg_get_vlanid(struct radius_msg *msg)
+int radius_msg_get_vlanid(struct radius_msg *msg, int *untagged, int numtagged,
+ int *tagged)
{
struct radius_tunnel_attrs tunnel[RADIUS_TUNNEL_TAGS], *tun;
size_t i;
const u8 *data;
char buf[10];
size_t dlen;
+ int j, taggedidx = 0, vlan_id;
os_memset(&tunnel, 0, sizeof(tunnel));
+ for (j = 0; j < numtagged; j++)
+ tagged[j] = 0;
+ *untagged = 0;
for (i = 0; i < msg->attr_used; i++) {
attr = radius_get_attr_hdr(msg, i);
break;
os_memcpy(buf, data, dlen);
buf[dlen] = '\0';
+ vlan_id = atoi(buf);
+ if (vlan_id <= 0)
+ break;
tun->tag_used++;
- tun->vlanid = atoi(buf);
+ tun->vlanid = vlan_id;
+ break;
+ case RADIUS_ATTR_EGRESS_VLANID: /* RFC 4675 */
+ if (attr->length != 6)
+ break;
+ vlan_id = WPA_GET_BE24(data + 1);
+ if (vlan_id <= 0)
+ break;
+ if (data[0] == 0x32)
+ *untagged = vlan_id;
+ else if (data[0] == 0x31 && tagged &&
+ taggedidx < numtagged)
+ tagged[taggedidx++] = vlan_id;
break;
}
}
+ /* Use tunnel with the lowest tag for untagged VLAN id */
for (i = 0; i < RADIUS_TUNNEL_TAGS; i++) {
tun = &tunnel[i];
if (tun->tag_used &&
tun->type == RADIUS_TUNNEL_TYPE_VLAN &&
tun->medium_type == RADIUS_TUNNEL_MEDIUM_TYPE_802 &&
- tun->vlanid > 0)
- return tun->vlanid;
+ tun->vlanid > 0) {
+ *untagged = tun->vlanid;
+ break;
+ }
}
+ if (taggedidx)
+ qsort(tagged, taggedidx, sizeof(int), cmp_int);
+
+ if (*untagged > 0 || taggedidx)
+ return 1;
return 0;
}
return 0;
}
+
+
+int radius_gen_session_id(u8 *id, size_t len)
+{
+ /*
+ * Acct-Session-Id and Acct-Multi-Session-Id should be globally and
+ * temporarily unique. A high quality random number is required
+ * therefore. This could be be improved by switching to a GUID.
+ */
+ return os_get_random(id, len);
+}
projects / mech_eap.git / blobdiff