Initial commit
Change-Id: I6a4444e3c193dae437cd7929f4c39aba7b749efa
diff --git a/extensions/app_radgw/radius.c b/extensions/app_radgw/radius.c
new file mode 100644
index 0000000..44755eb
--- /dev/null
+++ b/extensions/app_radgw/radius.c
@@ -0,0 +1,1373 @@
+/*********************************************************************************************************
+* Software License Agreement (BSD License) *
+* Author: Sebastien Decugis <sdecugis@freediameter.net> *
+* *
+* Copyright (c) 2013, WIDE Project and NICT *
+* All rights reserved. *
+* *
+* Redistribution and use of this software in source and binary forms, with or without modification, are *
+* permitted provided that the following conditions are met: *
+* *
+* * Redistributions of source code must retain the above *
+* copyright notice, this list of conditions and the *
+* following disclaimer. *
+* *
+* * Redistributions in binary form must reproduce the above *
+* copyright notice, this list of conditions and the *
+* following disclaimer in the documentation and/or other *
+* materials provided with the distribution. *
+* *
+* * Neither the name of the WIDE Project or NICT nor the *
+* names of its contributors may be used to endorse or *
+* promote products derived from this software without *
+* specific prior written permission of WIDE Project and *
+* NICT. *
+* *
+* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED *
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A *
+* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR *
+* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT *
+* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS *
+* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR *
+* TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF *
+* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
+*********************************************************************************************************/
+
+/* freeDiameter author note:
+ * The content from this file comes for the main part from the hostap project.
+ * It is redistributed under the terms of the BSD license, as allowed
+ * by the original copyright reproduced below.
+ * The modifications to this file are placed under the copyright of the freeDiameter project.
+ */
+
+/*
+ * hostapd / RADIUS message processing
+ * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ */
+
+/*********************************************************************************/
+#include "rgw.h"
+
+static struct radius_attr_hdr *
+radius_get_attr_hdr(struct radius_msg *msg, int idx)
+{
+ return (struct radius_attr_hdr *) (msg->buf + msg->attr_pos[idx]);
+}
+
+
+struct radius_msg *radius_msg_new(u8 code, u8 identifier)
+{
+ struct radius_msg *msg;
+
+ msg = os_malloc(sizeof(*msg));
+ if (msg == NULL)
+ return NULL;
+
+ if (radius_msg_initialize(msg, RADIUS_DEFAULT_MSG_SIZE)) {
+ os_free(msg);
+ return NULL;
+ }
+
+ radius_msg_set_hdr(msg, code, identifier);
+
+ return msg;
+}
+
+
+int radius_msg_initialize(struct radius_msg *msg, size_t init_len)
+{
+ if (msg == NULL || init_len < sizeof(struct radius_hdr))
+ return -1;
+
+ os_memset(msg, 0, sizeof(*msg));
+ msg->buf = os_zalloc(init_len);
+ if (msg->buf == NULL)
+ return -1;
+
+ msg->buf_size = init_len;
+ msg->hdr = (struct radius_hdr *) msg->buf;
+ msg->buf_used = sizeof(*msg->hdr);
+
+ msg->attr_pos =
+ os_zalloc(RADIUS_DEFAULT_ATTR_COUNT * sizeof(*msg->attr_pos));
+ if (msg->attr_pos == NULL) {
+ os_free(msg->buf);
+ msg->buf = NULL;
+ msg->hdr = NULL;
+ return -1;
+ }
+
+ msg->attr_size = RADIUS_DEFAULT_ATTR_COUNT;
+ msg->attr_used = 0;
+
+ return 0;
+}
+
+
+void radius_msg_set_hdr(struct radius_msg *msg, u8 code, u8 identifier)
+{
+ msg->hdr->code = code;
+ msg->hdr->identifier = identifier;
+}
+
+
+void radius_msg_free(struct radius_msg *msg)
+{
+ os_free(msg->buf);
+ msg->buf = NULL;
+ msg->hdr = NULL;
+ msg->buf_size = msg->buf_used = 0;
+
+ os_free(msg->attr_pos);
+ msg->attr_pos = NULL;
+ msg->attr_size = msg->attr_used = 0;
+}
+
+/* Destroy a message */
+void rgw_msg_free(struct rgw_radius_msg_meta ** msg)
+{
+ if (!msg || !*msg)
+ return;
+
+ radius_msg_free(&(*msg)->radius);
+ free(*msg);
+ *msg = NULL;
+}
+
+
+
+struct radius_attr_type {
+ u8 type;
+ char *name;
+ enum {
+ RADIUS_ATTR_UNDIST, RADIUS_ATTR_TEXT, RADIUS_ATTR_IP,
+ RADIUS_ATTR_HEXDUMP, RADIUS_ATTR_INT32, RADIUS_ATTR_IPV6
+ } data_type;
+};
+
+static 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_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_CLASS, "Class", RADIUS_ATTR_UNDIST },
+ { RADIUS_ATTR_VENDOR_SPECIFIC, "Vendor-Specific", RADIUS_ATTR_UNDIST },
+ { RADIUS_ATTR_SESSION_TIMEOUT, "Session-Timeout", RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_IDLE_TIMEOUT, "Idle-Timeout", RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_TERMINATION_ACTION, "Termination-Action",
+ RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_CALLED_STATION_ID, "Called-Station-Id",
+ RADIUS_ATTR_TEXT },
+ { RADIUS_ATTR_CALLING_STATION_ID, "Calling-Station-Id",
+ RADIUS_ATTR_TEXT },
+ { RADIUS_ATTR_NAS_IDENTIFIER, "NAS-Identifier", RADIUS_ATTR_TEXT },
+ { RADIUS_ATTR_PROXY_STATE, "Proxy-State", RADIUS_ATTR_UNDIST },
+ { RADIUS_ATTR_ACCT_STATUS_TYPE, "Acct-Status-Type",
+ RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_ACCT_DELAY_TIME, "Acct-Delay-Time", RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_ACCT_INPUT_OCTETS, "Acct-Input-Octets",
+ RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_ACCT_OUTPUT_OCTETS, "Acct-Output-Octets",
+ RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_ACCT_SESSION_ID, "Acct-Session-Id", RADIUS_ATTR_TEXT },
+ { RADIUS_ATTR_ACCT_AUTHENTIC, "Acct-Authentic", RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_ACCT_SESSION_TIME, "Acct-Session-Time",
+ RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_ACCT_INPUT_PACKETS, "Acct-Input-Packets",
+ RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_ACCT_OUTPUT_PACKETS, "Acct-Output-Packets",
+ RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_ACCT_TERMINATE_CAUSE, "Acct-Terminate-Cause",
+ RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_ACCT_MULTI_SESSION_ID, "Acct-Multi-Session-Id",
+ RADIUS_ATTR_TEXT },
+ { RADIUS_ATTR_ACCT_LINK_COUNT, "Acct-Link-Count", RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_ACCT_INPUT_GIGAWORDS, "Acct-Input-Gigawords",
+ RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_ACCT_OUTPUT_GIGAWORDS, "Acct-Output-Gigawords",
+ RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_EVENT_TIMESTAMP, "Event-Timestamp",
+ RADIUS_ATTR_INT32 },
+ { 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_HEXDUMP },
+ { RADIUS_ATTR_CONNECT_INFO, "Connect-Info", RADIUS_ATTR_TEXT },
+ { RADIUS_ATTR_EAP_MESSAGE, "EAP-Message", RADIUS_ATTR_UNDIST },
+ { RADIUS_ATTR_MESSAGE_AUTHENTICATOR, "Message-Authenticator",
+ RADIUS_ATTR_UNDIST },
+ { RADIUS_ATTR_TUNNEL_PRIVATE_GROUP_ID, "Tunnel-Private-Group-Id",
+ RADIUS_ATTR_HEXDUMP },
+ { RADIUS_ATTR_ACCT_INTERIM_INTERVAL, "Acct-Interim-Interval",
+ RADIUS_ATTR_INT32 },
+ { RADIUS_ATTR_CHARGEABLE_USER_IDENTITY, "Chargeable-User-Identity",
+ RADIUS_ATTR_TEXT },
+ { RADIUS_ATTR_NAS_IPV6_ADDRESS, "NAS-IPv6-Address", RADIUS_ATTR_IPV6 },
+};
+#define RADIUS_ATTRS (sizeof(radius_attrs) / sizeof(radius_attrs[0]))
+
+
+static struct radius_attr_type *radius_get_attr_type(u8 type)
+{
+ size_t i;
+
+ for (i = 0; i < RADIUS_ATTRS; i++) {
+ if (type == radius_attrs[i].type)
+ return &radius_attrs[i];
+ }
+
+ return NULL;
+}
+
+static char print_char_buf[5];
+
+static char * print_char(char c)
+{
+ if (c >= 32 && c < 127)
+ sprintf(print_char_buf, "%c", c);
+ else
+ sprintf(print_char_buf, "<%02x>", c);
+ return print_char_buf;
+}
+
+
+static char * radius_msg_dump_attr_val(struct radius_attr_hdr *hdr, char * outbuf, size_t buflen)
+{
+ struct radius_attr_type *attr;
+ int i, len;
+ unsigned char *pos;
+ u8 attrtype;
+
+ memset(outbuf, 0, buflen);
+
+ attr = radius_get_attr_type(hdr->type);
+
+ if (attr == NULL)
+ attrtype = RADIUS_ATTR_HEXDUMP;
+ else
+ attrtype = attr->data_type;
+
+ len = hdr->length - sizeof(struct radius_attr_hdr);
+ pos = (unsigned char *) (hdr + 1);
+
+ switch (attrtype) {
+ case RADIUS_ATTR_TEXT:
+ snprintf(outbuf + strlen(outbuf), buflen - strlen(outbuf), " Value: '");
+ for (i = 0; i < len; i++)
+ snprintf(outbuf + strlen(outbuf), buflen - strlen(outbuf), "%s", print_char(pos[i]));
+ snprintf(outbuf + strlen(outbuf), buflen - strlen(outbuf), "'");
+ break;
+
+ case RADIUS_ATTR_IP:
+ if (len == 4) {
+ struct in_addr addr;
+ os_memcpy(&addr, pos, 4);
+ snprintf(outbuf + strlen(outbuf), buflen - strlen(outbuf), " Value: %s", inet_ntoa(addr));
+ } else
+ snprintf(outbuf + strlen(outbuf), buflen - strlen(outbuf), " Invalid IP address length %d", len);
+ break;
+
+ 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));
+ snprintf(outbuf + strlen(outbuf), buflen - strlen(outbuf), " Value: %s", atxt ? atxt : "?");
+ } else
+ snprintf(outbuf + strlen(outbuf), buflen - strlen(outbuf), " Invalid IPv6 address length %d", len);
+ break;
+
+ case RADIUS_ATTR_INT32:
+ if (len == 4)
+ snprintf(outbuf + strlen(outbuf), buflen - strlen(outbuf), " Value: %u", WPA_GET_BE32(pos));
+ else
+ snprintf(outbuf + strlen(outbuf), buflen - strlen(outbuf), " Invalid INT32 length %d", len);
+ break;
+
+ case RADIUS_ATTR_HEXDUMP:
+ case RADIUS_ATTR_UNDIST:
+ default:
+ snprintf(outbuf + strlen(outbuf), buflen - strlen(outbuf), " Value:");
+ for (i = 0; i < len; i++)
+ snprintf(outbuf + strlen(outbuf), buflen - strlen(outbuf), " %02x", pos[i]);
+ break;
+ }
+
+ return outbuf;
+}
+
+/* Dump a message */
+void rgw_msg_dump(struct rgw_radius_msg_meta * msg, int has_meta)
+{
+ unsigned char *auth;
+ char buf[256];
+ size_t i;
+ if (! TRACE_BOOL(FULL) )
+ return;
+
+ auth = &(msg->radius.hdr->authenticator[0]);
+
+ fd_log_debug("------ RADIUS msg dump -------");
+ fd_log_debug(" id : 0x%02hhx, code : %hhd (%s), length : %d", msg->radius.hdr->identifier, msg->radius.hdr->code, rgw_msg_code_str(msg->radius.hdr->code), ntohs(msg->radius.hdr->length));
+ fd_log_debug(" auth: %02hhx %02hhx %02hhx %02hhx %02hhx %02hhx %02hhx %02hhx",
+ auth[0], auth[1], auth[2], auth[3], auth[4], auth[5], auth[6], auth[7]);
+ fd_log_debug(" %02hhx %02hhx %02hhx %02hhx %02hhx %02hhx %02hhx %02hhx",
+ auth[8], auth[9], auth[10], auth[11], auth[12], auth[13], auth[14], auth[15]);
+ for (i = 0; i < msg->radius.attr_used; i++) {
+ struct radius_attr_hdr *attr = (struct radius_attr_hdr *)(msg->radius.buf + msg->radius.attr_pos[i]);
+ fd_log_debug(" - Type: 0x%02hhx (%s) Len: %-3hhu", attr->type, rgw_msg_attrtype_str(attr->type), attr->length);
+ fd_log_debug("%s", radius_msg_dump_attr_val(attr, buf, sizeof(buf)));
+ }
+ if (has_meta && msg->ps_nb) {
+ fd_log_debug("---- hidden attributes:");
+ for (i = msg->ps_first; i < msg->ps_first + msg->ps_nb; i++) {
+ struct radius_attr_hdr *attr = (struct radius_attr_hdr *)(msg->radius.buf + msg->radius.attr_pos[i]);
+ fd_log_debug(" - Type: 0x%02hhx (%s) Len: %-3hhu", attr->type, rgw_msg_attrtype_str(attr->type), attr->length);
+ fd_log_debug("%s", radius_msg_dump_attr_val(attr, buf, sizeof(buf)));
+ }
+ }
+ fd_log_debug("-----------------------------");
+}
+
+
+int radius_msg_finish(struct radius_msg *msg, const u8 *secret,
+ size_t secret_len)
+{
+ if (secret) {
+ u8 auth[MD5_MAC_LEN];
+ struct radius_attr_hdr *attr;
+
+ os_memset(auth, 0, MD5_MAC_LEN);
+ attr = radius_msg_add_attr(msg,
+ RADIUS_ATTR_MESSAGE_AUTHENTICATOR,
+ auth, MD5_MAC_LEN);
+ if (attr == NULL) {
+ fd_log_debug("WARNING: Could not add Message-Authenticator");
+ return -1;
+ }
+ msg->hdr->length = htons(msg->buf_used);
+ hmac_md5(secret, secret_len, msg->buf, msg->buf_used,
+ (u8 *) (attr + 1));
+ } else
+ msg->hdr->length = htons(msg->buf_used);
+
+ if (msg->buf_used > 0xffff) {
+ fd_log_debug("WARNING: too long RADIUS message (%lu)",
+ (unsigned long) msg->buf_used);
+ return -1;
+ }
+ return 0;
+}
+
+
+int radius_msg_finish_srv(struct radius_msg *msg, const u8 *secret,
+ size_t secret_len, const u8 *req_authenticator)
+{
+ u8 auth[MD5_MAC_LEN];
+ struct radius_attr_hdr *attr;
+ const u8 *addr[4];
+ size_t len[4];
+
+ if (msg->hdr->code != RADIUS_CODE_ACCOUNTING_RESPONSE) {
+ os_memset(auth, 0, MD5_MAC_LEN);
+ attr = radius_msg_add_attr(msg, RADIUS_ATTR_MESSAGE_AUTHENTICATOR,
+ auth, MD5_MAC_LEN);
+ if (attr == NULL) {
+ fd_log_debug("WARNING: Could not add Message-Authenticator");
+ return -1;
+ }
+ msg->hdr->length = htons(msg->buf_used);
+ os_memcpy(msg->hdr->authenticator, req_authenticator,
+ sizeof(msg->hdr->authenticator));
+ hmac_md5(secret, secret_len, msg->buf, msg->buf_used,
+ (u8 *) (attr + 1));
+ } else {
+ msg->hdr->length = htons(msg->buf_used);
+ }
+
+ /* ResponseAuth = MD5(Code+ID+Length+RequestAuth+Attributes+Secret) */
+ addr[0] = (u8 *) msg->hdr;
+ len[0] = 1 + 1 + 2;
+ addr[1] = req_authenticator;
+ len[1] = MD5_MAC_LEN;
+ addr[2] = (u8 *) (msg->hdr + 1);
+ len[2] = msg->buf_used - sizeof(*msg->hdr);
+ addr[3] = secret;
+ len[3] = secret_len;
+ md5_vector(4, addr, len, msg->hdr->authenticator);
+
+ if (msg->buf_used > 0xffff) {
+ fd_log_debug("WARNING: too long RADIUS message (%lu)",
+ (unsigned long) msg->buf_used);
+ return -1;
+ }
+ return 0;
+}
+
+
+void radius_msg_finish_acct(struct radius_msg *msg, const u8 *secret,
+ size_t secret_len)
+{
+ const u8 *addr[2];
+ size_t len[2];
+
+ msg->hdr->length = htons(msg->buf_used);
+ os_memset(msg->hdr->authenticator, 0, MD5_MAC_LEN);
+ addr[0] = msg->buf;
+ len[0] = msg->buf_used;
+ addr[1] = secret;
+ len[1] = secret_len;
+ md5_vector(2, addr, len, msg->hdr->authenticator);
+
+ if (msg->buf_used > 0xffff) {
+ fd_log_debug("WARNING: too long RADIUS messages (%lu)",
+ (unsigned long) msg->buf_used);
+ }
+}
+
+
+int radius_msg_add_attr_to_array(struct radius_msg *msg,
+ struct radius_attr_hdr *attr)
+{
+ if (msg->attr_used >= msg->attr_size) {
+ size_t *nattr_pos;
+ int nlen = msg->attr_size * 2;
+
+ nattr_pos = os_realloc(msg->attr_pos,
+ nlen * sizeof(*msg->attr_pos));
+ if (nattr_pos == NULL)
+ return -1;
+
+ msg->attr_pos = nattr_pos;
+ msg->attr_size = nlen;
+ }
+
+ msg->attr_pos[msg->attr_used++] = (unsigned char *) attr - msg->buf;
+
+ return 0;
+}
+
+
+struct radius_attr_hdr *radius_msg_add_attr(struct radius_msg *msg, u8 type,
+ const u8 *data, size_t data_len)
+{
+ size_t buf_needed;
+ struct radius_attr_hdr *attr;
+
+ if (data_len > RADIUS_MAX_ATTR_LEN) {
+ fd_log_debug("radius_msg_add_attr: too long attribute (%lu bytes)",
+ (unsigned long) data_len);
+ return NULL;
+ }
+
+ buf_needed = msg->buf_used + sizeof(*attr) + data_len;
+
+ if (msg->buf_size < buf_needed) {
+ /* allocate more space for message buffer */
+ unsigned char *nbuf;
+ size_t nlen = msg->buf_size;
+
+ while (nlen < buf_needed)
+ nlen *= 2;
+ nbuf = os_realloc(msg->buf, nlen);
+ if (nbuf == NULL)
+ return NULL;
+ msg->buf = nbuf;
+ msg->hdr = (struct radius_hdr *) msg->buf;
+ os_memset(msg->buf + msg->buf_size, 0, nlen - msg->buf_size);
+ msg->buf_size = nlen;
+ }
+
+ attr = (struct radius_attr_hdr *) (msg->buf + msg->buf_used);
+ attr->type = type;
+ attr->length = sizeof(*attr) + data_len;
+ if (data_len > 0)
+ os_memcpy(attr + 1, data, data_len);
+
+ msg->buf_used += sizeof(*attr) + data_len;
+
+ if (radius_msg_add_attr_to_array(msg, attr))
+ return NULL;
+
+ return attr;
+}
+
+
+/* Modified version of radius_msg_parse */
+int rgw_msg_parse(unsigned char * buf, size_t len, struct rgw_radius_msg_meta ** msg)
+{
+ struct rgw_radius_msg_meta * temp_msg = NULL;
+ struct radius_hdr *hdr;
+ struct radius_attr_hdr *attr;
+ size_t msg_len;
+ unsigned char *pos, *end;
+ int ret = 0;
+
+ TRACE_ENTRY("%p %zd %p", buf, len, msg);
+
+ CHECK_PARAMS( buf && len >= sizeof(*hdr) && msg );
+
+ *msg = NULL;
+
+ /* Parse the RADIUS message */
+ hdr = (struct radius_hdr *) buf;
+ msg_len = ntohs(hdr->length);
+ if (msg_len < sizeof(*hdr) || msg_len > len) {
+ TRACE_DEBUG(INFO, "Invalid RADIUS message length");
+ return EINVAL;
+ }
+
+ if (msg_len < len) {
+ TRACE_DEBUG(INFO, "Ignored %lu extra bytes after RADIUS message",
+ (unsigned long) len - msg_len);
+ }
+
+ CHECK_MALLOC( temp_msg = malloc(sizeof(struct rgw_radius_msg_meta)) );
+ memset(temp_msg, 0, sizeof(struct rgw_radius_msg_meta));
+
+ if (radius_msg_initialize(&temp_msg->radius, msg_len)) {
+ TRACE_DEBUG(INFO, "Error in radius_msg_initialize, returning ENOMEM.");
+ free(temp_msg);
+ return ENOMEM;
+ }
+
+ /* Store the received data in the alloc'd buffer */
+ memcpy(temp_msg->radius.buf, buf, msg_len);
+ temp_msg->radius.buf_size = temp_msg->radius.buf_used = msg_len;
+
+ /* parse attributes */
+ pos = (unsigned char *) (temp_msg->radius.hdr + 1);
+ end = temp_msg->radius.buf + temp_msg->radius.buf_used;
+
+ while (pos < end) {
+ if ((size_t) (end - pos) < sizeof(*attr)) {
+ TRACE_DEBUG(INFO, "Trucated attribute found in RADIUS buffer, EINVAL.");
+ ret = EINVAL;
+ break;
+ }
+
+ attr = (struct radius_attr_hdr *) pos;
+
+ if (pos + attr->length > end || attr->length < sizeof(*attr)) {
+ TRACE_DEBUG(INFO, "Trucated attribute found in RADIUS buffer, EINVAL.");
+ ret = EINVAL;
+ break;
+ }
+
+ if (radius_msg_add_attr_to_array(&temp_msg->radius, attr)) {
+ TRACE_DEBUG(INFO, "Error in radius_msg_add_attr_to_array, ENOMEM");
+ ret = ENOMEM;
+ break;
+ }
+
+ if (attr->type == RADIUS_ATTR_PROXY_STATE)
+ temp_msg->ps_nb += 1;
+
+ pos += attr->length;
+ }
+
+ if (ret != 0) {
+ radius_msg_free(&temp_msg->radius);
+ free(temp_msg);
+ return ret;
+ }
+
+ /* Now move all the proxy-state attributes at the end of the attr_pos array */
+ if (temp_msg->ps_nb) {
+ size_t *temp_ps = NULL;
+ int n, new_n = 0, p = 0;
+
+ CHECK_MALLOC( temp_ps = calloc(temp_msg->ps_nb, sizeof(size_t)) );
+
+ /* Move all the Proxy-State attributes into the temp_ps array */
+ for (n=0; n < temp_msg->radius.attr_used; n++) {
+ struct radius_attr_hdr * attr = (struct radius_attr_hdr *)(temp_msg->radius.buf + temp_msg->radius.attr_pos[n]);
+
+ if (attr->type == RADIUS_ATTR_PROXY_STATE) {
+ temp_ps[p++] = temp_msg->radius.attr_pos[n];
+ } else {
+ temp_msg->radius.attr_pos[new_n++] = temp_msg->radius.attr_pos[n];
+ }
+ }
+ temp_msg->radius.attr_used = new_n; /* hide the proxy-state to other modules */
+ temp_msg->ps_first = new_n;
+
+ /* And back into the array */
+ memcpy(temp_msg->radius.attr_pos + new_n, temp_ps, p * sizeof(size_t));
+ free(temp_ps);
+ }
+
+ *msg = temp_msg;
+ return 0;
+}
+
+
+
+int radius_msg_add_eap(struct radius_msg *msg, const u8 *data, size_t data_len)
+{
+ const u8 *pos = data;
+ size_t left = data_len;
+
+ while (left > 0) {
+ int len;
+ if (left > RADIUS_MAX_ATTR_LEN)
+ len = RADIUS_MAX_ATTR_LEN;
+ else
+ len = left;
+
+ if (!radius_msg_add_attr(msg, RADIUS_ATTR_EAP_MESSAGE,
+ pos, len))
+ return 0;
+
+ pos += len;
+ left -= len;
+ }
+
+ return 1;
+}
+
+
+u8 *radius_msg_get_eap(struct radius_msg *msg, size_t *eap_len)
+{
+ u8 *eap, *pos;
+ size_t len, i;
+ struct radius_attr_hdr *attr;
+
+ if (msg == NULL)
+ return NULL;
+
+ len = 0;
+ for (i = 0; i < msg->attr_used; i++) {
+ attr = radius_get_attr_hdr(msg, i);
+ if (attr->type == RADIUS_ATTR_EAP_MESSAGE)
+ len += attr->length - sizeof(struct radius_attr_hdr);
+ }
+
+ if (len == 0)
+ return NULL;
+
+ eap = os_malloc(len);
+ if (eap == NULL)
+ return NULL;
+
+ pos = eap;
+ for (i = 0; i < msg->attr_used; i++) {
+ attr = radius_get_attr_hdr(msg, i);
+ if (attr->type == RADIUS_ATTR_EAP_MESSAGE) {
+ int flen = attr->length - sizeof(*attr);
+ os_memcpy(pos, attr + 1, flen);
+ pos += flen;
+ }
+ }
+
+ if (eap_len)
+ *eap_len = len;
+
+ return eap;
+}
+
+
+int radius_msg_verify_msg_auth(struct radius_msg *msg, const u8 *secret,
+ size_t secret_len, const u8 *req_auth)
+{
+ u8 auth[MD5_MAC_LEN], orig[MD5_MAC_LEN];
+ u8 orig_authenticator[16];
+ struct radius_attr_hdr *attr = NULL, *tmp;
+ size_t i;
+
+ for (i = 0; i < msg->attr_used; i++) {
+ tmp = radius_get_attr_hdr(msg, i);
+ if (tmp->type == RADIUS_ATTR_MESSAGE_AUTHENTICATOR) {
+ if (attr != NULL) {
+ fd_log_debug("Multiple Message-Authenticator attributes in RADIUS message");
+ return 1;
+ }
+ attr = tmp;
+ }
+ }
+
+ if (attr == NULL) {
+ fd_log_debug("No Message-Authenticator attribute found");
+ return 1;
+ }
+
+ os_memcpy(orig, attr + 1, MD5_MAC_LEN);
+ os_memset(attr + 1, 0, MD5_MAC_LEN);
+ if (req_auth) {
+ os_memcpy(orig_authenticator, msg->hdr->authenticator,
+ sizeof(orig_authenticator));
+ os_memcpy(msg->hdr->authenticator, req_auth,
+ sizeof(msg->hdr->authenticator));
+ }
+ hmac_md5(secret, secret_len, msg->buf, msg->buf_used, auth);
+ 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) {
+ fd_log_debug("Invalid Message-Authenticator!");
+ return 1;
+ }
+
+ return 0;
+}
+
+
+int radius_msg_verify(struct radius_msg *msg, const u8 *secret,
+ size_t secret_len, struct radius_msg *sent_msg, int auth)
+{
+ const u8 *addr[4];
+ size_t len[4];
+ u8 hash[MD5_MAC_LEN];
+
+ if (sent_msg == NULL) {
+ fd_log_debug("No matching Access-Request message found");
+ return 1;
+ }
+
+ if (auth &&
+ radius_msg_verify_msg_auth(msg, secret, secret_len,
+ sent_msg->hdr->authenticator)) {
+ return 1;
+ }
+
+ /* ResponseAuth = MD5(Code+ID+Length+RequestAuth+Attributes+Secret) */
+ addr[0] = (u8 *) msg->hdr;
+ len[0] = 1 + 1 + 2;
+ addr[1] = sent_msg->hdr->authenticator;
+ len[1] = MD5_MAC_LEN;
+ addr[2] = (u8 *) (msg->hdr + 1);
+ len[2] = msg->buf_used - sizeof(*msg->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) {
+ fd_log_debug("Response Authenticator invalid!");
+ return 1;
+ }
+
+ return 0;
+}
+
+
+int radius_msg_copy_attr(struct radius_msg *dst, struct radius_msg *src,
+ u8 type)
+{
+ struct radius_attr_hdr *attr;
+ size_t i;
+ int count = 0;
+
+ for (i = 0; i < src->attr_used; i++) {
+ attr = radius_get_attr_hdr(src, i);
+ if (attr->type == type) {
+ if (!radius_msg_add_attr(dst, type, (u8 *) (attr + 1),
+ attr->length - sizeof(*attr)))
+ return -1;
+ count++;
+ }
+ }
+
+ return count;
+}
+
+
+/* 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)
+{
+ 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);
+}
+
+
+/* Get Vendor-specific RADIUS Attribute from a parsed RADIUS message.
+ * Returns the Attribute payload and sets alen to indicate the length of the
+ * payload if a vendor attribute with subtype is found, otherwise returns NULL.
+ * The returned payload is allocated with os_malloc() and caller must free it
+ * by calling os_free().
+ */
+static u8 *radius_msg_get_vendor_attr(struct radius_msg *msg, u32 vendor,
+ u8 subtype, size_t *alen)
+{
+ u8 *data, *pos;
+ size_t i, len;
+
+ if (msg == NULL)
+ return NULL;
+
+ for (i = 0; i < msg->attr_used; i++) {
+ struct radius_attr_hdr *attr = radius_get_attr_hdr(msg, i);
+ size_t left;
+ u32 vendor_id;
+ struct radius_attr_vendor *vhdr;
+
+ if (attr->type != RADIUS_ATTR_VENDOR_SPECIFIC)
+ continue;
+
+ left = attr->length - sizeof(*attr);
+ if (left < 4)
+ continue;
+
+ pos = (u8 *) (attr + 1);
+
+ os_memcpy(&vendor_id, pos, 4);
+ pos += 4;
+ left -= 4;
+
+ if (ntohl(vendor_id) != vendor)
+ continue;
+
+ while (left >= sizeof(*vhdr)) {
+ vhdr = (struct radius_attr_vendor *) pos;
+ if (vhdr->vendor_length > left ||
+ vhdr->vendor_length < sizeof(*vhdr)) {
+ left = 0;
+ break;
+ }
+ if (vhdr->vendor_type != subtype) {
+ pos += vhdr->vendor_length;
+ left -= vhdr->vendor_length;
+ continue;
+ }
+
+ len = vhdr->vendor_length - sizeof(*vhdr);
+ data = os_malloc(len);
+ if (data == NULL)
+ return NULL;
+ os_memcpy(data, pos + sizeof(*vhdr), len);
+ if (alen)
+ *alen = len;
+ return data;
+ }
+ }
+
+ return NULL;
+}
+
+
+static u8 * decrypt_ms_key(const u8 *key, size_t len,
+ const u8 *req_authenticator,
+ const u8 *secret, size_t secret_len, size_t *reslen)
+{
+ u8 *plain, *ppos, *res;
+ const u8 *pos;
+ size_t left, plen;
+ u8 hash[MD5_MAC_LEN];
+ int i, first = 1;
+ const u8 *addr[3];
+ size_t elen[3];
+
+ /* key: 16-bit salt followed by encrypted key info */
+
+ if (len < 2 + 16)
+ return NULL;
+
+ pos = key + 2;
+ left = len - 2;
+ if (left % 16) {
+ fd_log_debug("Invalid ms key len %lu", (unsigned long) left);
+ return NULL;
+ }
+
+ plen = left;
+ ppos = plain = os_malloc(plen);
+ if (plain == NULL)
+ return NULL;
+ plain[0] = 0;
+
+ while (left > 0) {
+ /* b(1) = MD5(Secret + Request-Authenticator + Salt)
+ * b(i) = MD5(Secret + c(i - 1)) for i > 1 */
+
+ addr[0] = secret;
+ elen[0] = secret_len;
+ if (first) {
+ addr[1] = req_authenticator;
+ elen[1] = MD5_MAC_LEN;
+ addr[2] = key;
+ elen[2] = 2; /* Salt */
+ } else {
+ addr[1] = pos - MD5_MAC_LEN;
+ elen[1] = MD5_MAC_LEN;
+ }
+ md5_vector(first ? 3 : 2, addr, elen, hash);
+ first = 0;
+
+ for (i = 0; i < MD5_MAC_LEN; i++)
+ *ppos++ = *pos++ ^ hash[i];
+ left -= MD5_MAC_LEN;
+ }
+
+ if (plain[0] == 0 || plain[0] > plen - 1) {
+ fd_log_debug("Failed to decrypt MPPE key");
+ os_free(plain);
+ return NULL;
+ }
+
+ res = os_malloc(plain[0]);
+ if (res == NULL) {
+ os_free(plain);
+ return NULL;
+ }
+ os_memcpy(res, plain + 1, plain[0]);
+ if (reslen)
+ *reslen = plain[0];
+ os_free(plain);
+ return res;
+}
+
+
+static void encrypt_ms_key(const u8 *key, size_t key_len, u16 salt,
+ const u8 *req_authenticator,
+ const u8 *secret, size_t secret_len,
+ u8 *ebuf, size_t *elen)
+{
+ int i, len, first = 1;
+ u8 hash[MD5_MAC_LEN], saltbuf[2], *pos;
+ const u8 *addr[3];
+ size_t _len[3];
+
+ WPA_PUT_BE16(saltbuf, salt);
+
+ len = 1 + key_len;
+ if (len & 0x0f) {
+ len = (len & 0xf0) + 16;
+ }
+ os_memset(ebuf, 0, len);
+ ebuf[0] = key_len;
+ os_memcpy(ebuf + 1, key, key_len);
+
+ *elen = len;
+
+ pos = ebuf;
+ while (len > 0) {
+ /* b(1) = MD5(Secret + Request-Authenticator + Salt)
+ * b(i) = MD5(Secret + c(i - 1)) for i > 1 */
+ addr[0] = secret;
+ _len[0] = secret_len;
+ if (first) {
+ addr[1] = req_authenticator;
+ _len[1] = MD5_MAC_LEN;
+ addr[2] = saltbuf;
+ _len[2] = sizeof(saltbuf);
+ } else {
+ addr[1] = pos - MD5_MAC_LEN;
+ _len[1] = MD5_MAC_LEN;
+ }
+ md5_vector(first ? 3 : 2, addr, _len, hash);
+ first = 0;
+
+ for (i = 0; i < MD5_MAC_LEN; i++)
+ *pos++ ^= hash[i];
+
+ len -= MD5_MAC_LEN;
+ }
+}
+
+
+struct radius_ms_mppe_keys *
+radius_msg_get_ms_keys(struct radius_msg *msg, struct radius_msg *sent_msg,
+ const u8 *secret, size_t secret_len)
+{
+ u8 *key;
+ size_t keylen;
+ struct radius_ms_mppe_keys *keys;
+
+ if (msg == NULL || sent_msg == NULL)
+ return NULL;
+
+ keys = os_zalloc(sizeof(*keys));
+ if (keys == NULL)
+ return NULL;
+
+ key = radius_msg_get_vendor_attr(msg, RADIUS_VENDOR_ID_MICROSOFT,
+ RADIUS_VENDOR_ATTR_MS_MPPE_SEND_KEY,
+ &keylen);
+ if (key) {
+ keys->send = decrypt_ms_key(key, keylen,
+ sent_msg->hdr->authenticator,
+ secret, secret_len,
+ &keys->send_len);
+ os_free(key);
+ }
+
+ key = radius_msg_get_vendor_attr(msg, RADIUS_VENDOR_ID_MICROSOFT,
+ RADIUS_VENDOR_ATTR_MS_MPPE_RECV_KEY,
+ &keylen);
+ if (key) {
+ keys->recv = decrypt_ms_key(key, keylen,
+ sent_msg->hdr->authenticator,
+ secret, secret_len,
+ &keys->recv_len);
+ os_free(key);
+ }
+
+ return keys;
+}
+
+
+struct radius_ms_mppe_keys *
+radius_msg_get_cisco_keys(struct radius_msg *msg, struct radius_msg *sent_msg,
+ const u8 *secret, size_t secret_len)
+{
+ u8 *key;
+ size_t keylen;
+ struct radius_ms_mppe_keys *keys;
+
+ if (msg == NULL || sent_msg == NULL)
+ return NULL;
+
+ keys = os_zalloc(sizeof(*keys));
+ if (keys == NULL)
+ return NULL;
+
+ key = radius_msg_get_vendor_attr(msg, RADIUS_VENDOR_ID_CISCO,
+ RADIUS_CISCO_AV_PAIR, &keylen);
+ if (key && keylen == 51 &&
+ os_memcmp(key, "leap:session-key=", 17) == 0) {
+ keys->recv = decrypt_ms_key(key + 17, keylen - 17,
+ sent_msg->hdr->authenticator,
+ secret, secret_len,
+ &keys->recv_len);
+ }
+ os_free(key);
+
+ return keys;
+}
+
+
+int radius_msg_add_mppe_keys(struct radius_msg *msg,
+ const u8 *req_authenticator,
+ const u8 *secret, size_t secret_len,
+ const u8 *send_key, size_t send_key_len,
+ const u8 *recv_key, size_t recv_key_len)
+{
+ struct radius_attr_hdr *attr;
+ u32 vendor_id = htonl(RADIUS_VENDOR_ID_MICROSOFT);
+ u8 *buf;
+ struct radius_attr_vendor *vhdr;
+ u8 *pos;
+ size_t elen;
+ int hlen;
+ u16 salt;
+
+ hlen = sizeof(vendor_id) + sizeof(*vhdr) + 2;
+
+ /* MS-MPPE-Send-Key */
+ buf = os_malloc(hlen + send_key_len + 16);
+ if (buf == NULL) {
+ return 0;
+ }
+ pos = buf;
+ os_memcpy(pos, &vendor_id, sizeof(vendor_id));
+ pos += sizeof(vendor_id);
+ vhdr = (struct radius_attr_vendor *) pos;
+ vhdr->vendor_type = RADIUS_VENDOR_ATTR_MS_MPPE_SEND_KEY;
+ pos = (u8 *) (vhdr + 1);
+ salt = os_random() | 0x8000;
+ WPA_PUT_BE16(pos, salt);
+ pos += 2;
+ encrypt_ms_key(send_key, send_key_len, salt, req_authenticator, secret,
+ secret_len, pos, &elen);
+ vhdr->vendor_length = hlen + elen - sizeof(vendor_id);
+
+ attr = radius_msg_add_attr(msg, RADIUS_ATTR_VENDOR_SPECIFIC,
+ buf, hlen + elen);
+ os_free(buf);
+ if (attr == NULL) {
+ return 0;
+ }
+
+ /* MS-MPPE-Recv-Key */
+ buf = os_malloc(hlen + send_key_len + 16);
+ if (buf == NULL) {
+ return 0;
+ }
+ pos = buf;
+ os_memcpy(pos, &vendor_id, sizeof(vendor_id));
+ pos += sizeof(vendor_id);
+ vhdr = (struct radius_attr_vendor *) pos;
+ vhdr->vendor_type = RADIUS_VENDOR_ATTR_MS_MPPE_RECV_KEY;
+ pos = (u8 *) (vhdr + 1);
+ salt ^= 1;
+ WPA_PUT_BE16(pos, salt);
+ pos += 2;
+ encrypt_ms_key(recv_key, recv_key_len, salt, req_authenticator, secret,
+ secret_len, pos, &elen);
+ vhdr->vendor_length = hlen + elen - sizeof(vendor_id);
+
+ attr = radius_msg_add_attr(msg, RADIUS_ATTR_VENDOR_SPECIFIC,
+ buf, hlen + elen);
+ os_free(buf);
+ if (attr == NULL) {
+ return 0;
+ }
+
+ return 1;
+}
+
+
+/* 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 padlen, i;
+ size_t buf_len, pos;
+ const u8 *addr[2];
+ size_t len[2];
+ u8 hash[16];
+
+ if (data_len > 128)
+ return NULL;
+
+ os_memcpy(buf, data, data_len);
+ buf_len = data_len;
+
+ padlen = data_len % 16;
+ if (padlen) {
+ padlen = 16 - padlen;
+ os_memset(buf + data_len, 0, padlen);
+ buf_len += padlen;
+ }
+
+ addr[0] = secret;
+ len[0] = secret_len;
+ addr[1] = msg->hdr->authenticator;
+ len[1] = 16;
+ md5_vector(2, addr, len, hash);
+
+ for (i = 0; i < 16; i++)
+ buf[i] ^= hash[i];
+ pos = 16;
+
+ while (pos < buf_len) {
+ addr[0] = secret;
+ len[0] = secret_len;
+ addr[1] = &buf[pos - 16];
+ len[1] = 16;
+ md5_vector(2, addr, len, hash);
+
+ for (i = 0; i < 16; i++)
+ buf[pos + i] ^= hash[i];
+
+ pos += 16;
+ }
+
+ return radius_msg_add_attr(msg, RADIUS_ATTR_USER_PASSWORD,
+ buf, buf_len);
+}
+
+
+int radius_msg_get_attr(struct radius_msg *msg, u8 type, u8 *buf, size_t len)
+{
+ struct radius_attr_hdr *attr = NULL, *tmp;
+ size_t i, dlen;
+
+ for (i = 0; i < msg->attr_used; i++) {
+ tmp = radius_get_attr_hdr(msg, i);
+ if (tmp->type == type) {
+ attr = tmp;
+ break;
+ }
+ }
+
+ if (!attr)
+ return -1;
+
+ dlen = attr->length - sizeof(*attr);
+ if (buf)
+ os_memcpy(buf, (attr + 1), dlen > len ? len : dlen);
+ return dlen;
+}
+
+
+int radius_msg_get_attr_ptr(struct radius_msg *msg, u8 type, u8 **buf,
+ size_t *len, const u8 *start)
+{
+ size_t i;
+ struct radius_attr_hdr *attr = NULL, *tmp;
+
+ for (i = 0; i < msg->attr_used; i++) {
+ tmp = radius_get_attr_hdr(msg, i);
+ if (tmp->type == type &&
+ (start == NULL || (u8 *) tmp > start)) {
+ attr = tmp;
+ break;
+ }
+ }
+
+ if (!attr)
+ return -1;
+
+ *buf = (u8 *) (attr + 1);
+ *len = attr->length - sizeof(*attr);
+ return 0;
+}
+
+
+int radius_msg_count_attr(struct radius_msg *msg, u8 type, int min_len)
+{
+ size_t i;
+ int count;
+
+ for (count = 0, i = 0; i < msg->attr_used; i++) {
+ struct radius_attr_hdr *attr = radius_get_attr_hdr(msg, i);
+ if (attr->type == type &&
+ attr->length >= sizeof(struct radius_attr_hdr) + min_len)
+ count++;
+ }
+
+ return count;
+}
+
+
+struct radius_tunnel_attrs {
+ int tag_used;
+ int type; /* Tunnel-Type */
+ int medium_type; /* Tunnel-Medium-Type */
+ int vlanid;
+};
+
+
+/**
+ * radius_msg_get_vlanid - Parse RADIUS attributes for VLAN tunnel information
+ * @msg: RADIUS message
+ * Returns: VLAN ID for the first tunnel configuration of -1 if none is found
+ */
+int radius_msg_get_vlanid(struct radius_msg *msg)
+{
+ struct radius_tunnel_attrs tunnel[RADIUS_TUNNEL_TAGS], *tun;
+ size_t i;
+ struct radius_attr_hdr *attr = NULL;
+ const u8 *data;
+ char buf[10];
+ size_t dlen;
+
+ os_memset(&tunnel, 0, sizeof(tunnel));
+
+ for (i = 0; i < msg->attr_used; i++) {
+ attr = radius_get_attr_hdr(msg, i);
+ data = (const u8 *) (attr + 1);
+ dlen = attr->length - sizeof(*attr);
+ if (attr->length < 3)
+ continue;
+ if (data[0] >= RADIUS_TUNNEL_TAGS)
+ tun = &tunnel[0];
+ else
+ tun = &tunnel[data[0]];
+
+ switch (attr->type) {
+ case RADIUS_ATTR_TUNNEL_TYPE:
+ if (attr->length != 6)
+ break;
+ tun->tag_used++;
+ tun->type = WPA_GET_BE24(data + 1);
+ break;
+ case RADIUS_ATTR_TUNNEL_MEDIUM_TYPE:
+ if (attr->length != 6)
+ break;
+ tun->tag_used++;
+ tun->medium_type = WPA_GET_BE24(data + 1);
+ break;
+ case RADIUS_ATTR_TUNNEL_PRIVATE_GROUP_ID:
+ if (data[0] < RADIUS_TUNNEL_TAGS) {
+ data++;
+ dlen--;
+ }
+ if (dlen >= sizeof(buf))
+ break;
+ os_memcpy(buf, data, dlen);
+ buf[dlen] = '\0';
+ tun->tag_used++;
+ tun->vlanid = atoi(buf);
+ break;
+ }
+ }
+
+ 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;
+ }
+
+ return -1;
+}
+
+
+void radius_free_class(struct radius_class_data *c)
+{
+ size_t i;
+ if (c == NULL)
+ return;
+ for (i = 0; i < c->count; i++)
+ os_free(c->attr[i].data);
+ os_free(c->attr);
+ c->attr = NULL;
+ c->count = 0;
+}
+
+
+int radius_copy_class(struct radius_class_data *dst,
+ const struct radius_class_data *src)
+{
+ size_t i;
+
+ if (src->attr == NULL)
+ return 0;
+
+ dst->attr = os_zalloc(src->count * sizeof(struct radius_attr_data));
+ if (dst->attr == NULL)
+ return -1;
+
+ dst->count = 0;
+
+ for (i = 0; i < src->count; i++) {
+ dst->attr[i].data = os_malloc(src->attr[i].len);
+ if (dst->attr[i].data == NULL)
+ break;
+ dst->count++;
+ os_memcpy(dst->attr[i].data, src->attr[i].data,
+ src->attr[i].len);
+ dst->attr[i].len = src->attr[i].len;
+ }
+
+ return 0;
+}