---
scan.c | 194 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++--
1 files changed, 187 insertions(+), 7 deletions(-)
diff --git a/scan.c b/scan.c
index 6ff4386..8fb7ac2 100644
--- a/scan.c
+++ b/scan.c
@@ -27,6 +27,9 @@
#define WLAN_CAPABILITY_APSD (1<<11)
#define WLAN_CAPABILITY_DSSS_OFDM (1<<13)
+static unsigned char wifi_oui[3] = { 0x00, 0x50, 0xf2 };
+static unsigned char ieee80211_oui[3] = { 0x00, 0x0f, 0xac };
+
struct scan_params {
bool unknown;
};
@@ -55,6 +58,14 @@ COMMAND(scan, trigger, NULL,
typedef void (*printfn)(unsigned char type, unsigned char len, unsigned char *data);
+static void tab_on_first(bool *first)
+{
+ if (!*first)
+ printf("\t");
+ else
+ *first = false;
+}
+
static void print_ssid(unsigned char type, unsigned char len, unsigned char *data)
{
int i;
@@ -128,6 +139,176 @@ static void print_erp(unsigned char type, unsigned char len, unsigned char *data
printf("\n");
}
+static void print_cipher(unsigned char *data)
+{
+ if (memcmp(data, wifi_oui, 3) == 0) {
+ switch (data[3]) {
+ case 0x00:
+ printf("Use group cipher suite");
+ break;
+ case 0x01:
+ printf("WEP-40");
+ break;
+ case 0x02:
+ printf("TKIP");
+ break;
+ case 0x04:
+ printf("CCMP");
+ break;
+ case 0x05:
+ printf("WEP-104");
+ break;
+ default:
+ printf("Reserved (%.02x)", data[3]);
+ break;
+ }
+ } else if (memcmp(data, ieee80211_oui, 3) == 0) {
+ switch (data[3]) {
+ case 0x00:
+ printf("Use group cipher suite");
+ break;
+ case 0x01:
+ printf("WEP-40");
+ break;
+ case 0x02:
+ printf("TKIP");
+ break;
+ case 0x04:
+ printf("CCMP");
+ break;
+ case 0x05:
+ printf("WEP-104");
+ break;
+ case 0x06:
+ printf("AES-128-CMAC");
+ break;
+ default:
+ printf("Reserved (%.02x)", data[3]);
+ break;
+ }
+ } else
+ printf("Other");
+}
+
+static void print_auth(unsigned char *data)
+{
+ if (memcmp(data, wifi_oui, 3) == 0) {
+ switch (data[3]) {
+ case 0x01:
+ printf("IEEE 802.1X");
+ break;
+ case 0x02:
+ printf("PSK");
+ break;
+ default:
+ printf("Reserved (%.02x)", data[3]);
+ break;
+ }
+ } else if (memcmp(data, ieee80211_oui, 3) == 0) {
+ switch (data[3]) {
+ case 0x01:
+ printf("IEEE 802.1X");
+ break;
+ case 0x02:
+ printf("PSK");
+ break;
+ default:
+ printf("Reserved (%.02x)", data[3]);
+ break;
+ }
+ } else
+ printf("Other");
+}
+
+static void print_wpa(const char *ie,
+ const char *defcipher, const char *defauth,
+ unsigned char len, unsigned char *data)
+{
+ bool first = true;
+ __u16 version, count, capa;
+ int i;
+
+ printf("\t%s:", ie);
+
+ if (len < 2) {
+ printf(" <too short> data:");
+ for(i = 0; i < len; i++)
+ printf(" %.02x", data[i]);
+ printf("\n");
+ return;
+ }
+
+ version = data[0] + (data[1] << 8);
+ tab_on_first(&first);
+ printf("\t * Version: %d\n", version);
+
+ data += 2;
+ len -= 2;
+
+ if (len < 4) {
+ tab_on_first(&first);
+ printf("\t * Group cipher: %s\n", defcipher);
+ printf("\t * Pairwise ciphers: %s\n", defcipher);
+ return;
+ }
+
+ tab_on_first(&first);
+ printf("\t * Group cipher: ");
+ print_cipher(data);
+ printf("\n");
+
+ data += 4;
+ len -= 4;
+
+ if (len < 2) {
+ tab_on_first(&first);
+ printf("\t * Pairwise ciphers: %s\n", defcipher);
+ return;
+ }
+
+ count = data[0] | (data[1] << 8);
+ tab_on_first(&first);
+ printf("\t * Pairwise ciphers:");
+ for (i=0; i<count; i++) {
+ printf(" ");
+ print_cipher(data + 2 + (i * 4));
+ }
+ printf("\n");
+
+ data += 2 + (count * 4);
+ len -= 2 + (count * 4);
+
+ if (len < 2) {
+ tab_on_first(&first);
+ printf("\t * Authentication suites: %s\n", defauth);
+ return;
+ }
+
+ count = data[0] | (data[1] << 8);
+ tab_on_first(&first);
+ printf("\t * Authentication suites:");
+ for (i=0; i<count; i++) {
+ printf(" ");
+ print_auth(data + 2 + (i * 4));
+ }
+ printf("\n");
+
+ data += 2 + (count * 4);
+ len -= 2 + (count * 4);
+
+ if (len < 2)
+ return;
+
+ capa = data[0] | (data[1] << 8);
+ tab_on_first(&first);
+ printf("\t * Capabilities: 0x%.4x\n", capa);
+}
+
+static void print_rsn(unsigned char type, unsigned char len, unsigned char *data)
+{
+ print_wpa("WPA2", "CCMP", "IEEE 802.1X", len, data);
+}
+
static void print_capabilities(unsigned char type, unsigned char len, unsigned char *data)
{
int i;
@@ -145,16 +326,14 @@ static const printfn ieprinters[] = {
[5] = print_ign,
[7] = print_country,
[42] = print_erp,
+ [48] = print_rsn,
[50] = print_supprates,
[127] = print_capabilities,
};
-static void tab_on_first(bool *first)
+static void print_wifi_wpa(unsigned char type, unsigned char len, unsigned char *data)
{
- if (!*first)
- printf("\t");
- else
- *first = false;
+ print_wpa("WPA", "TKIP", "IEEE 802.1X", len, data);
}
static void print_wifi_wmm(unsigned char type, unsigned char len, unsigned char *data)
@@ -260,6 +439,7 @@ static void print_wifi_wps(unsigned char type, unsigned char len, unsigned char
}
static const printfn wifiprinters[] = {
+ [1] = print_wifi_wpa,
[2] = print_wifi_wmm,
[4] = print_wifi_wps,
};
@@ -277,12 +457,12 @@ static void print_vendor(unsigned char len, unsigned char *data,
return;
}
- if (len >= 4 && data[0] == 0x00 && data[1] == 0x50 && data[2] == 0xF2) {
+ if (len >= 4 && memcmp(data, wifi_oui, 3) == 0) {
if (data[3] < ARRAY_SIZE(wifiprinters) && wifiprinters[data[3]])
return wifiprinters[data[3]](data[3], len - 4, data + 4);
if (!params->unknown)
return;
- printf("\tWiFi OUI %#.2x data:", data[3]);
+ printf("\tWiFi OUI %#.2x, data:", data[3]);
for(i = 0; i < len - 4; i++)
printf(" %.02x", data[i + 4]);
printf("\n");
--
1.6.0.6
--
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