mirror of
https://github.com/openwrt/openwrt.git
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57 lines
1.4 KiB
Diff
57 lines
1.4 KiB
Diff
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--- a/src/common/wpa_common.c
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+++ b/src/common/wpa_common.c
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@@ -811,6 +811,31 @@ const char * wpa_key_mgmt_txt(int key_mg
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}
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+static void wpa_fixup_wpa_ie_rsn(u8 *assoc_ie, const u8 *wpa_msg_ie,
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+ size_t rsn_ie_len)
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+{
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+ int pos, count;
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+
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+ pos = sizeof(struct rsn_ie_hdr) + RSN_SELECTOR_LEN;
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+ if (rsn_ie_len < pos + 2)
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+ return;
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+
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+ count = WPA_GET_LE16(wpa_msg_ie + pos);
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+ pos += 2 + count * RSN_SELECTOR_LEN;
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+ if (rsn_ie_len < pos + 2)
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+ return;
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+
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+ count = WPA_GET_LE16(wpa_msg_ie + pos);
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+ pos += 2 + count * RSN_SELECTOR_LEN;
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+ if (rsn_ie_len < pos + 2)
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+ return;
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+
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+ if (!assoc_ie[pos] && !assoc_ie[pos + 1] &&
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+ (wpa_msg_ie[pos] || wpa_msg_ie[pos + 1]))
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+ memcpy(&assoc_ie[pos], &wpa_msg_ie[pos], 2);
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+}
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+
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+
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int wpa_compare_rsn_ie(int ft_initial_assoc,
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const u8 *ie1, size_t ie1len,
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const u8 *ie2, size_t ie2len)
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@@ -818,8 +843,19 @@ int wpa_compare_rsn_ie(int ft_initial_as
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if (ie1 == NULL || ie2 == NULL)
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return -1;
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- if (ie1len == ie2len && os_memcmp(ie1, ie2, ie1len) == 0)
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- return 0; /* identical IEs */
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+ if (ie1len == ie2len) {
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+ u8 *ie_tmp;
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+
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+ if (os_memcmp(ie1, ie2, ie1len) == 0)
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+ return 0; /* identical IEs */
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+
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+ ie_tmp = alloca(ie1len);
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+ memcpy(ie_tmp, ie1, ie1len);
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+ wpa_fixup_wpa_ie_rsn(ie_tmp, ie2, ie1len);
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+
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+ if (os_memcmp(ie_tmp, ie2, ie1len) == 0)
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+ return 0; /* only mismatch in RSN capabilties */
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+ }
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#ifdef CONFIG_IEEE80211R
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if (ft_initial_assoc) {
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