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HS 2.0: Remove duplicate icon entries

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Only one of the icon entries with a matching BSSID and file name can be
fetched from wpa_supplicant and as such, there is no need to maintain
the old data if it was not explicitly deleted before running a new fetch
for the same BSSID and icon. Remove older duplicated entries whenever
completing a pending icon fetch to optimize memory use.

Signed-off-by: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2015-12-19 18:53:27 +02:00
parent ca9968a012
commit 61f25f80b4
1 changed files with 20 additions and 0 deletions
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20
wpa_supplicant/hs20_supplicant.c
View file

@ -357,6 +357,25 @@ static void hs20_set_osu_access_permission(const char *osu_dir,
}
}
static void hs20_remove_duplicate_icons(struct wpa_supplicant *wpa_s,
struct icon_entry *new_icon)
{
struct icon_entry *icon, *tmp;
dl_list_for_each_safe(icon, tmp, &wpa_s->icon_head, struct icon_entry,
list) {
if (icon == new_icon)
continue;
if (os_memcmp(icon->bssid, new_icon->bssid, ETH_ALEN) == 0 &&
os_strcmp(icon->file_name, new_icon->file_name) == 0) {
dl_list_del(&icon->list);
hs20_free_icon_entry(icon);
}
}
}
static int hs20_process_icon_binary_file(struct wpa_supplicant *wpa_s,
const u8 *sa, const u8 *pos,
size_t slen, u8 dialog_token)
@ -375,6 +394,7 @@ static int hs20_process_icon_binary_file(struct wpa_supplicant *wpa_s,
return -1;
os_memcpy(icon->image, pos, slen);
icon->image_len = slen;
hs20_remove_duplicate_icons(wpa_s, icon);
wpa_msg(wpa_s, MSG_INFO,
"RX-HS20-ICON " MACSTR " %s %u",
MAC2STR(sa), icon->file_name,