/*
* RADIUS message processing
- * Copyright (c) 2002-2009, 2011-2012, 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.
} data_type;
};
-static struct radius_attr_type radius_attrs[] =
+static const struct radius_attr_type radius_attrs[] =
{
{ RADIUS_ATTR_USER_NAME, "User-Name", RADIUS_ATTR_TEXT },
{ 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",
{ RADIUS_ATTR_CHARGEABLE_USER_IDENTITY, "Chargeable-User-Identity",
RADIUS_ATTR_TEXT },
{ RADIUS_ATTR_NAS_IPV6_ADDRESS, "NAS-IPv6-Address", RADIUS_ATTR_IPV6 },
- { RADIUS_ATTR_ERROR_CAUSE, "Error-Cause", RADIUS_ATTR_INT32 }
+ { RADIUS_ATTR_ERROR_CAUSE, "Error-Cause", RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_EAP_KEY_NAME, "EAP-Key-Name", RADIUS_ATTR_HEXDUMP },
+ { RADIUS_ATTR_OPERATOR_NAME, "Operator-Name", RADIUS_ATTR_TEXT },
+ { RADIUS_ATTR_LOCATION_INFO, "Location-Information",
+ RADIUS_ATTR_HEXDUMP },
+ { RADIUS_ATTR_LOCATION_DATA, "Location-Data", RADIUS_ATTR_HEXDUMP },
+ { RADIUS_ATTR_BASIC_LOCATION_POLICY_RULES,
+ "Basic-Location-Policy-Rules", RADIUS_ATTR_HEXDUMP },
+ { RADIUS_ATTR_EXTENDED_LOCATION_POLICY_RULES,
+ "Extended-Location-Policy-Rules", RADIUS_ATTR_HEXDUMP },
+ { RADIUS_ATTR_LOCATION_CAPABLE, "Location-Capable", RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_REQUESTED_LOCATION_INFO, "Requested-Location-Info",
+ RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_MOBILITY_DOMAIN_ID, "Mobility-Domain-Id",
+ RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_WLAN_HESSID, "WLAN-HESSID", RADIUS_ATTR_TEXT },
+ { RADIUS_ATTR_WLAN_PAIRWISE_CIPHER, "WLAN-Pairwise-Cipher",
+ RADIUS_ATTR_HEXDUMP },
+ { RADIUS_ATTR_WLAN_GROUP_CIPHER, "WLAN-Group-Cipher",
+ RADIUS_ATTR_HEXDUMP },
+ { RADIUS_ATTR_WLAN_AKM_SUITE, "WLAN-AKM-Suite",
+ RADIUS_ATTR_HEXDUMP },
+ { RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER, "WLAN-Group-Mgmt-Pairwise-Cipher",
+ RADIUS_ATTR_HEXDUMP },
};
-#define RADIUS_ATTRS (sizeof(radius_attrs) / sizeof(radius_attrs[0]))
+#define RADIUS_ATTRS ARRAY_SIZE(radius_attrs)
-static struct radius_attr_type *radius_get_attr_type(u8 type)
+static const struct radius_attr_type *radius_get_attr_type(u8 type)
{
size_t i;
}
-static void print_char(char c)
-{
- if (c >= 32 && c < 127)
- printf("%c", c);
- else
- printf("<%02x>", c);
-}
-
-
static void radius_msg_dump_attr(struct radius_attr_hdr *hdr)
{
- struct radius_attr_type *attr;
- int i, len;
+ const struct radius_attr_type *attr;
+ int len;
unsigned char *pos;
+ char buf[1000];
attr = radius_get_attr_type(hdr->type);
- printf(" Attribute %d (%s) length=%d\n",
- hdr->type, attr ? attr->name : "?Unknown?", hdr->length);
+ wpa_printf(MSG_INFO, " Attribute %d (%s) length=%d",
+ hdr->type, attr ? attr->name : "?Unknown?", hdr->length);
if (attr == NULL || hdr->length < sizeof(struct radius_attr_hdr))
return;
switch (attr->data_type) {
case RADIUS_ATTR_TEXT:
- printf(" Value: '");
- for (i = 0; i < len; i++)
- print_char(pos[i]);
- printf("'\n");
+ printf_encode(buf, sizeof(buf), pos, len);
+ wpa_printf(MSG_INFO, " Value: '%s'", buf);
break;
case RADIUS_ATTR_IP:
if (len == 4) {
struct in_addr addr;
os_memcpy(&addr, pos, 4);
- printf(" Value: %s\n", inet_ntoa(addr));
- } else
- printf(" Invalid IP address length %d\n", len);
+ wpa_printf(MSG_INFO, " Value: %s",
+ inet_ntoa(addr));
+ } else {
+ wpa_printf(MSG_INFO, " Invalid IP address length %d",
+ len);
+ }
break;
#ifdef CONFIG_IPV6
case RADIUS_ATTR_IPV6:
if (len == 16) {
- char buf[128];
const char *atxt;
struct in6_addr *addr = (struct in6_addr *) pos;
atxt = inet_ntop(AF_INET6, addr, buf, sizeof(buf));
- printf(" Value: %s\n", atxt ? atxt : "?");
- } else
- printf(" Invalid IPv6 address length %d\n", len);
+ wpa_printf(MSG_INFO, " Value: %s",
+ atxt ? atxt : "?");
+ } else {
+ wpa_printf(MSG_INFO, " Invalid IPv6 address length %d",
+ len);
+ }
break;
#endif /* CONFIG_IPV6 */
case RADIUS_ATTR_HEXDUMP:
case RADIUS_ATTR_UNDIST:
- printf(" Value:");
- for (i = 0; i < len; i++)
- printf(" %02x", pos[i]);
- printf("\n");
+ wpa_snprintf_hex(buf, sizeof(buf), pos, len);
+ wpa_printf(MSG_INFO, " Value: %s", buf);
break;
case RADIUS_ATTR_INT32:
if (len == 4)
- printf(" Value: %u\n", WPA_GET_BE32(pos));
+ wpa_printf(MSG_INFO, " Value: %u",
+ WPA_GET_BE32(pos));
else
- printf(" Invalid INT32 length %d\n", len);
+ wpa_printf(MSG_INFO, " Invalid INT32 length %d",
+ len);
break;
default:
{
size_t i;
- printf("RADIUS message: code=%d (%s) identifier=%d length=%d\n",
- msg->hdr->code, radius_code_string(msg->hdr->code),
- msg->hdr->identifier, be_to_host16(msg->hdr->length));
+ wpa_printf(MSG_INFO, "RADIUS message: code=%d (%s) identifier=%d length=%d",
+ msg->hdr->code, radius_code_string(msg->hdr->code),
+ msg->hdr->identifier, be_to_host16(msg->hdr->length));
for (i = 0; i < msg->attr_used; i++) {
struct radius_attr_hdr *attr = radius_get_attr_hdr(msg, i);
attr = radius_msg_add_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR,
auth, MD5_MAC_LEN);
if (attr == NULL) {
- printf("WARNING: Could not add Message-Authenticator\n");
+ wpa_printf(MSG_ERROR, "WARNING: Could not add Message-Authenticator");
return -1;
}
msg->hdr->length = host_to_be16(wpabuf_len(msg->buf));
}
+void radius_msg_finish_acct_resp(struct radius_msg *msg, const u8 *secret,
+ size_t secret_len, const u8 *req_authenticator)
+{
+ const u8 *addr[2];
+ size_t len[2];
+
+ msg->hdr->length = host_to_be16(wpabuf_len(msg->buf));
+ os_memcpy(msg->hdr->authenticator, req_authenticator, MD5_MAC_LEN);
+ addr[0] = wpabuf_head(msg->buf);
+ len[0] = wpabuf_len(msg->buf);
+ addr[1] = secret;
+ len[1] = secret_len;
+ md5_vector(2, addr, len, msg->hdr->authenticator);
+
+ if (wpabuf_len(msg->buf) > 0xffff) {
+ wpa_printf(MSG_WARNING, "RADIUS: Too long messages (%lu)",
+ (unsigned long) wpabuf_len(msg->buf));
+ }
+}
+
+
int radius_msg_verify_acct_req(struct radius_msg *msg, const u8 *secret,
size_t secret_len)
{
addr[3] = secret;
len[3] = secret_len;
md5_vector(4, addr, len, hash);
- return os_memcmp(msg->hdr->authenticator, hash, MD5_MAC_LEN) != 0;
+ return os_memcmp_const(msg->hdr->authenticator, hash, MD5_MAC_LEN) != 0;
}
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];
addr[3] = secret;
len[3] = secret_len;
md5_vector(4, addr, len, hash);
- if (os_memcmp(msg->hdr->authenticator, hash, MD5_MAC_LEN) != 0)
+ if (os_memcmp_const(msg->hdr->authenticator, hash, MD5_MAC_LEN) != 0)
return 1;
for (i = 0; i < msg->attr_used; i++) {
}
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;
}
os_memcpy(msg->hdr->authenticator, orig_authenticator,
sizeof(orig_authenticator));
- return os_memcmp(orig, auth, MD5_MAC_LEN) != 0;
+ return os_memcmp_const(orig, auth, MD5_MAC_LEN) != 0;
}
size_t *nattr_pos;
int nlen = msg->attr_size * 2;
- nattr_pos = os_realloc(msg->attr_pos,
- nlen * sizeof(*msg->attr_pos));
+ nattr_pos = os_realloc_array(msg->attr_pos, nlen,
+ sizeof(*msg->attr_pos));
if (nattr_pos == NULL)
return -1;
struct radius_attr_hdr *attr;
if (data_len > RADIUS_MAX_ATTR_LEN) {
- printf("radius_msg_add_attr: too long attribute (%lu bytes)\n",
+ wpa_printf(MSG_ERROR, "radius_msg_add_attr: too long attribute (%lu bytes)",
(unsigned long) data_len);
return NULL;
}
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 */
tmp = radius_get_attr_hdr(msg, i);
if (tmp->type == RADIUS_ATTR_MESSAGE_AUTHENTICATOR) {
if (attr != NULL) {
- printf("Multiple Message-Authenticator "
- "attributes in RADIUS message\n");
+ wpa_printf(MSG_INFO, "Multiple Message-Authenticator attributes in RADIUS message");
return 1;
}
attr = tmp;
}
if (attr == NULL) {
- printf("No Message-Authenticator attribute found\n");
+ wpa_printf(MSG_INFO, "No Message-Authenticator attribute found");
return 1;
}
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,
sizeof(orig_authenticator));
}
- if (os_memcmp(orig, auth, MD5_MAC_LEN) != 0) {
- printf("Invalid Message-Authenticator!\n");
+ if (os_memcmp_const(orig, auth, MD5_MAC_LEN) != 0) {
+ wpa_printf(MSG_INFO, "Invalid Message-Authenticator!");
return 1;
}
u8 hash[MD5_MAC_LEN];
if (sent_msg == NULL) {
- printf("No matching Access-Request message found\n");
+ wpa_printf(MSG_INFO, "No matching Access-Request message found");
return 1;
}
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(hash, msg->hdr->authenticator, MD5_MAC_LEN) != 0) {
- printf("Response Authenticator invalid!\n");
+ 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));
}
vhdr = (struct radius_attr_vendor *) pos;
if (vhdr->vendor_length > left ||
vhdr->vendor_length < sizeof(*vhdr)) {
- left = 0;
break;
}
if (vhdr->vendor_type != subtype) {
/* key: 16-bit salt followed by encrypted key info */
- if (len < 2 + 16)
+ if (len < 2 + 16) {
+ wpa_printf(MSG_DEBUG, "RADIUS: %s: Len is too small: %d",
+ __func__, (int) len);
return NULL;
+ }
pos = key + 2;
left = len - 2;
if (left % 16) {
- printf("Invalid ms key len %lu\n", (unsigned long) left);
+ wpa_printf(MSG_INFO, "RADIUS: Invalid ms key len %lu",
+ (unsigned long) left);
return NULL;
}
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++)
}
if (plain[0] == 0 || plain[0] > plen - 1) {
- printf("Failed to decrypt MPPE key\n");
+ wpa_printf(MSG_INFO, "RADIUS: Failed to decrypt MPPE key");
os_free(plain);
return NULL;
}
sent_msg->hdr->authenticator,
secret, secret_len,
&keys->send_len);
+ if (!keys->send) {
+ wpa_printf(MSG_DEBUG,
+ "RADIUS: Failed to decrypt send key");
+ }
os_free(key);
}
sent_msg->hdr->authenticator,
secret, secret_len,
&keys->recv_len);
+ if (!keys->recv) {
+ wpa_printf(MSG_DEBUG,
+ "RADIUS: Failed to decrypt recv key");
+ }
os_free(key);
}
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,
}
/* MS-MPPE-Recv-Key */
- buf = os_malloc(hlen + send_key_len + 16);
+ buf = os_malloc(hlen + recv_key_len + 16);
if (buf == NULL) {
return 0;
}
}
-/* Add User-Password attribute to a RADIUS message and encrypt it as specified
- * in RFC 2865, Chap. 5.2 */
-struct radius_attr_hdr *
-radius_msg_add_attr_user_password(struct radius_msg *msg,
- const u8 *data, size_t data_len,
- const u8 *secret, size_t secret_len)
+int radius_msg_add_wfa(struct radius_msg *msg, u8 subtype, const u8 *data,
+ size_t len)
{
- u8 buf[128];
- size_t padlen, i, buf_len, pos;
+ struct radius_attr_hdr *attr;
+ u8 *buf, *pos;
+ size_t alen;
+
+ alen = 4 + 2 + len;
+ buf = os_malloc(alen);
+ if (buf == NULL)
+ return 0;
+ pos = buf;
+ WPA_PUT_BE32(pos, RADIUS_VENDOR_ID_WFA);
+ pos += 4;
+ *pos++ = subtype;
+ *pos++ = 2 + len;
+ os_memcpy(pos, data, len);
+ attr = radius_msg_add_attr(msg, RADIUS_ATTR_VENDOR_SPECIFIC,
+ buf, alen);
+ os_free(buf);
+ if (attr == NULL)
+ return 0;
+
+ return 1;
+}
+
+
+int radius_user_password_hide(struct radius_msg *msg,
+ const u8 *data, size_t data_len,
+ const u8 *secret, size_t secret_len,
+ u8 *buf, size_t buf_len)
+{
+ size_t padlen, i, pos;
const u8 *addr[2];
size_t len[2];
u8 hash[16];
- if (data_len > 128)
- return NULL;
+ if (data_len + 16 > buf_len)
+ return -1;
os_memcpy(buf, data, data_len);
- buf_len = data_len;
padlen = data_len % 16;
- if (padlen && data_len < sizeof(buf)) {
+ if (padlen && data_len < buf_len) {
padlen = 16 - padlen;
os_memset(buf + data_len, 0, padlen);
- buf_len += padlen;
+ buf_len = data_len + padlen;
+ } else {
+ buf_len = data_len;
}
addr[0] = secret;
pos += 16;
}
+ return buf_len;
+}
+
+
+/* Add User-Password attribute to a RADIUS message and encrypt it as specified
+ * in RFC 2865, Chap. 5.2 */
+struct radius_attr_hdr *
+radius_msg_add_attr_user_password(struct radius_msg *msg,
+ const u8 *data, size_t data_len,
+ const u8 *secret, size_t secret_len)
+{
+ u8 buf[128];
+ int res;
+
+ res = radius_user_password_hide(msg, data, data_len,
+ secret, secret_len, buf, sizeof(buf));
+ if (res < 0)
+ return NULL;
+
return radius_msg_add_attr(msg, RADIUS_ATTR_USER_PASSWORD,
- buf, buf_len);
+ buf, res);
}
};
+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 of -1 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;
+ }
}
- return -1;
+ if (taggedidx)
+ qsort(tagged, taggedidx, sizeof(int), cmp_int);
+
+ if (*untagged > 0 || taggedidx)
+ return 1;
+ return 0;
}
* @secret: RADIUS shared secret
* @secret_len: Length of secret
* @sent_msg: Sent RADIUS message
- * Returns: pointer to password (free with os_free) or %NULL
+ * @n: Number of password attribute to return (starting with 0)
+ * Returns: Pointer to n-th password (free with os_free) or %NULL
*/
char * radius_msg_get_tunnel_password(struct radius_msg *msg, int *keylen,
const u8 *secret, size_t secret_len,
- struct radius_msg *sent_msg)
+ struct radius_msg *sent_msg, size_t n)
{
u8 *buf = NULL;
size_t buflen;
size_t len[3];
u8 hash[16];
u8 *pos;
- size_t i;
+ size_t i, j = 0;
struct radius_attr_hdr *attr;
const u8 *data;
size_t dlen;
size_t fdlen = -1;
char *ret = NULL;
- /* find attribute with lowest tag and check it */
+ /* find n-th valid Tunnel-Password attribute */
for (i = 0; i < msg->attr_used; i++) {
attr = radius_get_attr_hdr(msg, i);
if (attr == NULL ||
dlen = attr->length - sizeof(*attr);
if (dlen <= 3 || dlen % 16 != 3)
continue;
- if (fdata != NULL && fdata[0] <= data[0])
+ j++;
+ if (j <= n)
continue;
fdata = data;
fdlen = dlen;
+ break;
}
if (fdata == NULL)
goto out;
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