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sd-netlink, wifi-util: fix attribute type of NL80211_ATTR_SSID

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This commit is contained in:
Yu Watanabe
2021-09-29 15:38:59 +09:00
parent ae2b86de43
commit f3e235ffb2
3 changed files with 18 additions and 2 deletions
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src/shared/wifi-util.c
+11 -1
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@@ -9,6 +9,7 @@ int wifi_get_interface(sd_netlink *genl, int ifindex, enum nl80211_iftype *ret_i
_cleanup_free_ char *ssid = NULL;
const char *family;
uint32_t iftype;
size_t len;
int r;
assert(genl);
@@ -53,9 +54,18 @@ int wifi_get_interface(sd_netlink *genl, int ifindex, enum nl80211_iftype *ret_i
if (r < 0)
return log_debug_errno(r, "Failed to get NL80211_ATTR_IFTYPE attribute: %m");
r = sd_netlink_message_read_string_strdup(reply, NL80211_ATTR_SSID, &ssid);
r = sd_netlink_message_read_data_suffix0(reply, NL80211_ATTR_SSID, &len, (void**) &ssid);
if (r < 0 && r != -ENODATA)
return log_debug_errno(r, "Failed to get NL80211_ATTR_SSID attribute: %m");
if (r >= 0) {
if (len == 0) {
log_debug("SSID has zero length, ignoring the received SSID.");
ssid = mfree(ssid);
} else if (strlen_ptr(ssid) != len) {
log_debug("SSID contains NUL character(s), ignoring the received SSID.");
ssid = mfree(ssid);
}
}
if (ret_iftype)
*ret_iftype = iftype;