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-rw-r--r--package/hostapd/patches/005-use-nl80211-for-get-key.patch116
1 files changed, 116 insertions, 0 deletions
diff --git a/package/hostapd/patches/005-use-nl80211-for-get-key.patch b/package/hostapd/patches/005-use-nl80211-for-get-key.patch
new file mode 100644
index 0000000000..142c1939d2
--- /dev/null
+++ b/package/hostapd/patches/005-use-nl80211-for-get-key.patch
@@ -0,0 +1,116 @@
+---
+ hostapd/driver_devicescape.c | 96 ++++++++++++++++++++++++++++++++++---------
+ 1 file changed, 76 insertions(+), 20 deletions(-)
+
+--- hostap.orig/hostapd/driver_devicescape.c 2007-11-09 13:41:13.000000000 +0100
++++ hostap/hostapd/driver_devicescape.c 2007-11-09 13:41:14.000000000 +0100
+@@ -228,33 +228,89 @@ static int i802_set_encryption(const cha
+ return ret;
+ }
+
++static inline int min_int(int a, int b)
++{
++ if (a<b)
++ return a;
++ return b;
++}
++
++static int get_key_handler(struct nl_msg *msg, void *arg)
++{
++ struct nlattr *tb[NL80211_ATTR_MAX];
++ struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
++
++ nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
++ genlmsg_attrlen(gnlh, 0), NULL);
++
++ /*
++ * TODO: validate the key index and mac address!
++ * Otherwise, there's a race condition as soon as
++ * the kernel starts sending key notifications.
++ */
++
++ if (tb[NL80211_ATTR_KEY_SEQ])
++ memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
++ min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
++ return NL_SKIP;
++}
++
++static int ack_wait_handler(struct nl_msg *msg, void *arg)
++{
++ int *finished = arg;
++
++ *finished = 1;
++ return NL_STOP;
++}
+
+ static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
+ int idx, u8 *seq)
+ {
+ struct i802_driver_data *drv = priv;
+- struct prism2_hostapd_param *param;
+- size_t param_len;
+- int ret;
++ struct nl_msg *msg;
++ struct nl_cb *cb = NULL;
++ int ret = -1;
++ int err = 0;
++ int finished = 0;
+
+- param_len = sizeof(struct prism2_hostapd_param) + 32;
+- param = os_zalloc(param_len);
+- if (param == NULL)
+- return -1;
++ msg = nlmsg_alloc();
++ if (!msg)
++ goto out;
+
+- param->cmd = PRISM2_GET_ENCRYPTION;
+- if (addr == NULL)
+- memset(param->sta_addr, 0xff, ETH_ALEN);
+- else
+- memcpy(param->sta_addr, addr, ETH_ALEN);
+- param->u.crypt.idx = idx;
+-
+- ret = hostapd_ioctl_iface(iface, drv, param, param_len);
+- if (ret == 0) {
+- memcpy(seq, param->u.crypt.seq_counter,
+- HOSTAP_SEQ_COUNTER_SIZE);
+- }
+- free(param);
++ genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
++ 0, NL80211_CMD_GET_KEY, 0);
++
++ if (addr)
++ NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
++ NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
++ NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
++
++ cb = nl_cb_alloc(NL_CB_CUSTOM);
++ if (!cb)
++ goto out;
++
++ memset(seq, 0, 6);
++
++ if (nl_send_auto_complete(drv->nl_handle, msg) < 0)
++ goto out;
++
++ nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, get_key_handler, seq);
++ nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_wait_handler, &finished);
++
++ err = nl_recvmsgs(drv->nl_handle, cb);
++
++ if (!finished)
++ err = nl_wait_for_ack(drv->nl_handle);
++
++ if (err < 0)
++ goto out;
++
++ ret = 0;
++
++ out:
++ nl_cb_put(cb);
++ nla_put_failure:
++ nlmsg_free(msg);
+ return ret;
+ }
+