Screenshot:
BSS 00:0b:85:aa:bb:cc (on wlan11)
TSF: 488777932855 usec (5d, 15:46:17)
freq: 5320
beacon interval: 100
capability: ESS (0x0001)
signal: -74.00 dBm
last seen: 1730 ms ago
SSID: Foobar
Supported rates: 6.0* 9.0 12.0* 18.0 24.0* 36.0 48.0 54.0
Country: US Environment: Indoor/Outdoor
Country IE triplets:
Channels [36 - 48]
Channels [52 - 64]
Channels [149 - 165]
I haven't found any regclasses while scanning at work.
We can likely start using the info here:
http://wireless.kernel.org/en/developers/Documentation/ChannelList
to process this info more.
Cc: ic.felix@xxxxxxxxx
Cc: Lukáš Turek <8an@xxxxxxxxxxx>
Signed-off-by: Luis R. Rodriguez <lrodriguez@xxxxxxxxxxx>
---
scan.c | 87 +++++++++++++++++++++++++++++++++++++++++++++++++++------------
1 files changed, 70 insertions(+), 17 deletions(-)
diff --git a/scan.c b/scan.c
index d37ae7c..142eedb 100644
--- a/scan.c
+++ b/scan.c
@@ -35,6 +35,23 @@ struct scan_params {
enum print_ie_type type;
};
+#define IEEE80211_COUNTRY_EXTENSION_ID 201
+
+struct ieee80211_country_ie_triplet {
+ union {
+ struct {
+ __u8 first_channel;
+ __u8 num_channels;
+ __s8 max_power;
+ } __attribute__ ((packed)) chans;
+ struct {
+ __u8 reg_extension_id;
+ __u8 reg_class;
+ __u8 coverage_class;
+ } __attribute__ ((packed)) ext;
+ };
+} __attribute__ ((packed));
+
static int handle_scan(struct nl80211_state *state,
struct nl_cb *cb,
struct nl_msg *msg,
@@ -142,29 +159,65 @@ static void print_ds(const uint8_t type, uint8_t len, const uint8_t *data)
printf(" channel %d\n", data[0]);
}
-static void print_country(const uint8_t type, uint8_t len, const uint8_t *data)
+static const char *country_env_str(char environment)
{
- int i;
-
- printf(" %.*s", 2, data);
- switch (data[2]) {
+ switch (environment) {
case 'I':
- printf(" (indoor)");
- break;
+ return "Indoor only";
case 'O':
- printf(" (outdoor)");
- break;
+ return "Outdoor only";
case ' ':
- printf(" (in/outdoor)");
- break;
+ return "Indoor/Outdoor";
default:
- printf(" (invalid environment)");
- break;
+ return "bogus";
}
- printf(", data:");
- for(i=0; i<len-3; i++)
- printf(" %.02x", data[i + 3]);
- printf("\n");
+}
+
+static void print_country(const uint8_t type, uint8_t len, const uint8_t *data)
+{
+ printf(" %.*s", 2, data);
+
+ printf("\tEnvironment: %s\n", country_env_str(data[2]));
+
+ data += 3;
+ len -= 3;
+
+ if (len < 3) {
+ printf("\t\tNo country IE triplets present\n");
+ return;
+ }
+
+ printf("\tCountry IE triplets:\n");
+
+ while (len >= 3) {
+ int end_channel;
+ struct ieee80211_country_ie_triplet *triplet =
+ (struct ieee80211_country_ie_triplet *) data;
+
+ if (triplet->ext.reg_extension_id >= IEEE80211_COUNTRY_EXTENSION_ID) {
+ printf("\t\tExtension ID: %d Regulatory Class: %d Coverage class: %d\n",
+ triplet->ext.reg_extension_id,
+ triplet->ext.reg_class,
+ triplet->ext.coverage_class);
+
+ data += 3;
+ len -= 3;
+ continue;
+ }
+
+ /* 2 GHz */
+ if (triplet->chans.first_channel <= 14)
+ end_channel = triplet->chans.first_channel + triplet->chans.num_channels;
+ else
+ end_channel = triplet->chans.first_channel + (4 * (triplet->chans.num_channels - 1));
+
+ printf("\t\tChannels [%d - %d]\n", triplet->chans.first_channel, end_channel);
+
+ data += 3;
+ len -= 3;
+ }
+
+ return;
}
static void print_powerconstraint(const uint8_t type, uint8_t len, const uint8_t *data)
--
1.6.3.3
--
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