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wiphy: refactor parse_bss

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This commit is contained in:
Denis Kenzior 2014-10-28 11:04:31 -05:00
parent 0a71163c3f
commit 6917824be9
1 changed files with 29 additions and 33 deletions
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60
src/wiphy.c
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@ -352,74 +352,70 @@ static void mlme_associate(struct netdev *netdev, struct bss *bss)
} }
static bool parse_ie(const void *data, uint16_t len) static bool parse_ie(struct bss *bss, const void *data, uint16_t len)
{ {
struct ie_tlv_iter iter; struct ie_tlv_iter iter;
bool result = false;
ie_tlv_iter_init(&iter, data, len); ie_tlv_iter_init(&iter, data, len);
while (ie_tlv_iter_next(&iter)) { while (ie_tlv_iter_next(&iter)) {
uint8_t tag = ie_tlv_iter_get_tag(&iter); uint8_t tag = ie_tlv_iter_get_tag(&iter);
if (tag == 0) { switch (tag) {
char *str; case 0:
bss->ssid = l_strndup((const char *) iter.data,
str = l_strndup((const char *) iter.data, iter.len); iter.len);
if (!strcmp(str, network_ssid)) { break;
l_debug("Found network SSID=%s", str); default:
result = true; break;
}
l_free(str);
} }
} }
return result; return true;
} }
static void parse_bss(struct netdev *netdev, struct l_genl_attr *attr) static void parse_bss(struct netdev *netdev, struct l_genl_attr *attr)
{ {
uint16_t type, len; uint16_t type, len;
const void *data; const void *data;
uint8_t bssid[ETH_ALEN]; struct bss *bss;
uint32_t frequency;
bool found = false; bss = l_new(struct bss, 1);
while (l_genl_attr_next(attr, &type, &len, &data)) { while (l_genl_attr_next(attr, &type, &len, &data)) {
switch (type) { switch (type) {
case NL80211_BSS_BSSID: case NL80211_BSS_BSSID:
if (len != sizeof(bssid)) { if (len != sizeof(bss->addr)) {
l_warn("Invalid BSSID attribute"); l_warn("Invalid BSSID attribute");
return; goto fail;
} }
memcpy(bssid, data, len);
memcpy(bss->addr, data, len);
break; break;
case NL80211_BSS_FREQUENCY: case NL80211_BSS_FREQUENCY:
if (len != sizeof(uint32_t)) { if (len != sizeof(uint32_t)) {
l_warn("Invalid frequency attribute"); l_warn("Invalid frequency attribute");
return; goto fail;
} }
frequency = *((uint32_t *) data);
bss->frequency = *((uint32_t *) data);
break; break;
case NL80211_BSS_INFORMATION_ELEMENTS: case NL80211_BSS_INFORMATION_ELEMENTS:
found = parse_ie(data, len); if (!parse_ie(bss, data, len)) {
l_warn("Could not parse BSS IEs");
goto fail;
}
break; break;
} }
} }
if (found) { l_debug("Frequency for %s is %u", bss->ssid, bss->frequency);
struct bss *bss;
l_debug("Frequency %u", frequency);
bss = l_new(struct bss, 1);
memcpy(bss->addr, bssid, sizeof(bss->addr));
bss->frequency = frequency;
bss->ssid = l_strdup(network_ssid);
l_queue_push_head(netdev->bss_list, bss); l_queue_push_head(netdev->bss_list, bss);
return;
mlme_authenticate(netdev, bss); fail:
} bss_free(bss);
} }
static void get_scan_callback(struct l_genl_msg *msg, void *user_data) static void get_scan_callback(struct l_genl_msg *msg, void *user_data)