#include "nl80211.h"
#include "iw.h"
+#define WLAN_CAPABILITY_ESS (1<<0)
+#define WLAN_CAPABILITY_IBSS (1<<1)
+#define WLAN_CAPABILITY_CF_POLLABLE (1<<2)
+#define WLAN_CAPABILITY_CF_POLL_REQUEST (1<<3)
+#define WLAN_CAPABILITY_PRIVACY (1<<4)
+#define WLAN_CAPABILITY_SHORT_PREAMBLE (1<<5)
+#define WLAN_CAPABILITY_PBCC (1<<6)
+#define WLAN_CAPABILITY_CHANNEL_AGILITY (1<<7)
+#define WLAN_CAPABILITY_SPECTRUM_MGMT (1<<8)
+#define WLAN_CAPABILITY_QOS (1<<9)
+#define WLAN_CAPABILITY_SHORT_SLOT_TIME (1<<10)
+#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;
+ enum print_ie_type type;
};
static int handle_scan(struct nl80211_state *state,
struct nl_msg *msg,
int argc, char **argv)
{
- struct nl_msg *ssids = NULL;
+ struct nl_msg *ssids = NULL, *freqs = NULL;
+ char *eptr;
int err = -ENOBUFS;
+ int i;
+ enum {
+ NONE,
+ FREQ,
+ SSID,
+ DONE,
+ } parse = NONE;
+ int freq;
+ bool passive = false, have_ssids = false, have_freqs = false;
ssids = nlmsg_alloc();
if (!ssids)
return -ENOMEM;
- NLA_PUT(ssids, 1, 0, "");
- nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
+
+ freqs = nlmsg_alloc();
+ if (!freqs) {
+ nlmsg_free(ssids);
+ return -ENOMEM;
+ }
+
+ for (i = 0; i < argc; i++) {
+ if (parse == NONE && strcmp(argv[i], "freq") == 0) {
+ parse = FREQ;
+ have_freqs = true;
+ continue;
+ } else if (parse < SSID && strcmp(argv[i], "ssid") == 0) {
+ parse = SSID;
+ have_ssids = true;
+ continue;
+ } else if (parse < SSID && strcmp(argv[i], "passive") == 0) {
+ parse = DONE;
+ passive = true;
+ continue;
+ }
+
+ switch (parse) {
+ case NONE:
+ case DONE:
+ return 1;
+ case FREQ:
+ freq = strtoul(argv[i], &eptr, 10);
+ if (eptr != argv[i] + strlen(argv[i]))
+ return 1;
+ NLA_PUT_U32(freqs, i, freq);
+ break;
+ case SSID:
+ NLA_PUT(ssids, i, strlen(argv[i]), argv[i]);
+ break;
+ }
+ }
+
+ if (!have_ssids)
+ NLA_PUT(ssids, 1, 0, "");
+ if (!passive)
+ nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
+
+ if (have_freqs)
+ nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
err = 0;
nla_put_failure:
nlmsg_free(ssids);
+ nlmsg_free(freqs);
return err;
}
-COMMAND(scan, trigger, NULL,
- NL80211_CMD_TRIGGER_SCAN, 0, CIB_NETDEV, handle_scan);
-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)
+static void print_ssid(const uint8_t type, uint8_t len, const uint8_t *data)
{
- int i;
- printf("\tSSID: ");
- for (i=0; i<len; i++) {
- if (isprint(data[i]))
- printf("%c", data[i]);
- else
- printf("\\x%.2x", data[i]);
- }
+ printf(" ");
+ print_ssid_escaped(len, data);
printf("\n");
}
-static void print_supprates(unsigned char type, unsigned char len, unsigned char *data)
+static void print_supprates(const uint8_t type, uint8_t len, const uint8_t *data)
{
int i;
- if (type == 1)
- printf("\tSupported rates: ");
- else
- printf("\tExtended supported rates: ");
+ printf(" ");
- for (i=0; i<len; i++) {
+ for (i = 0; i < len; i++) {
int r = data[i] & 0x7f;
printf("%d.%d%s ", r/2, 5*(r&1), data[i] & 0x80 ? "*":"");
}
printf("\n");
}
-static void print_ds(unsigned char type, unsigned char len, unsigned char *data)
+static void print_ds(const uint8_t type, uint8_t len, const uint8_t *data)
{
- printf("\tDS Parameter set: channel %d\n", data[0]);
+ printf(" channel %d\n", data[0]);
}
-static void print_ign(unsigned char type, unsigned char len, unsigned char *data)
+static void print_country(const uint8_t type, uint8_t len, const uint8_t *data)
{
- /* ignore for now, not too useful */
+ int i;
+
+ printf(" %.*s", 2, data);
+ switch (data[2]) {
+ case 'I':
+ printf(" (indoor)");
+ break;
+ case 'O':
+ printf(" (outdoor)");
+ break;
+ case ' ':
+ printf(" (in/outdoor)");
+ break;
+ default:
+ printf(" (invalid environment)");
+ break;
+ }
+ printf(", data:");
+ for(i=0; i<len-3; i++)
+ printf(" %.02x", data[i + 3]);
+ printf("\n");
}
-static const printfn ieprinters[] = {
- [0] = print_ssid,
- [1] = print_supprates,
- [3] = print_ds,
- [5] = print_ign,
- [50] = print_supprates,
-};
+static void print_powerconstraint(const uint8_t type, uint8_t len, const uint8_t *data)
+{
+ printf(" %d dB\n", data[0]);
+}
-static void tab_on_first(bool *first)
+static void print_erp(const uint8_t type, uint8_t len, const uint8_t *data)
{
- if (!*first)
- printf("\t");
+ if (data[0] == 0x00)
+ printf(" <no flags>");
+ if (data[0] & 0x01)
+ printf(" NonERP_Present");
+ if (data[0] & 0x02)
+ printf(" Use_Protection");
+ if (data[0] & 0x04)
+ printf(" Barker_Preamble_Mode");
+ printf("\n");
+}
+
+static void print_cipher(const uint8_t *data)
+{
+ if (memcmp(data, wifi_oui, 3) == 0) {
+ switch (data[3]) {
+ case 0:
+ printf("Use group cipher suite");
+ break;
+ case 1:
+ printf("WEP-40");
+ break;
+ case 2:
+ printf("TKIP");
+ break;
+ case 4:
+ printf("CCMP");
+ break;
+ case 5:
+ printf("WEP-104");
+ break;
+ default:
+ printf("%.02x-%.02x-%.02x:%d",
+ data[0], data[1] ,data[2], data[3]);
+ break;
+ }
+ } else if (memcmp(data, ieee80211_oui, 3) == 0) {
+ switch (data[3]) {
+ case 0:
+ printf("Use group cipher suite");
+ break;
+ case 1:
+ printf("WEP-40");
+ break;
+ case 2:
+ printf("TKIP");
+ break;
+ case 4:
+ printf("CCMP");
+ break;
+ case 5:
+ printf("WEP-104");
+ break;
+ case 6:
+ printf("AES-128-CMAC");
+ break;
+ default:
+ printf("%.02x-%.02x-%.02x:%d",
+ data[0], data[1] ,data[2], data[3]);
+ break;
+ }
+ } else
+ printf("%.02x-%.02x-%.02x:%d",
+ data[0], data[1] ,data[2], data[3]);
+}
+
+static void print_auth(const uint8_t *data)
+{
+ if (memcmp(data, wifi_oui, 3) == 0) {
+ switch (data[3]) {
+ case 1:
+ printf("IEEE 802.1X");
+ break;
+ case 2:
+ printf("PSK");
+ break;
+ default:
+ printf("%.02x-%.02x-%.02x:%d",
+ data[0], data[1] ,data[2], data[3]);
+ break;
+ }
+ } else if (memcmp(data, ieee80211_oui, 3) == 0) {
+ switch (data[3]) {
+ case 1:
+ printf("IEEE 802.1X");
+ break;
+ case 2:
+ printf("PSK");
+ break;
+ case 3:
+ printf("FT/IEEE 802.1X");
+ break;
+ case 4:
+ printf("FT/PSK");
+ break;
+ case 5:
+ printf("IEEE 802.1X/SHA-256");
+ break;
+ case 6:
+ printf("PSK/SHA-256");
+ break;
+ default:
+ printf("%.02x-%.02x-%.02x:%d",
+ data[0], data[1] ,data[2], data[3]);
+ break;
+ }
+ } else
+ printf("%.02x-%.02x-%.02x:%d",
+ data[0], data[1] ,data[2], data[3]);
+}
+
+static void print_rsn_ie(const char *defcipher, const char *defauth,
+ uint8_t len, const uint8_t *data)
+{
+ bool first = true;
+ __u16 version, count, capa;
+ int i;
+
+ 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);
+ if (2 + (count * 4) > len)
+ goto invalid;
+
+ 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);
+ if (2 + (count * 4) > len)
+ goto invalid;
+
+ 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) {
+ capa = data[0] | (data[1] << 8);
+ tab_on_first(&first);
+ printf("\t * Capabilities:");
+ if (capa & 0x0001)
+ printf(" PreAuth");
+ if (capa & 0x0002)
+ printf(" NoPairwise");
+ switch ((capa & 0x000c) >> 2) {
+ case 0:
+ break;
+ case 1:
+ printf(" 2-PTKSA-RC");
+ break;
+ case 2:
+ printf(" 4-PTKSA-RC");
+ break;
+ case 3:
+ printf(" 16-PTKSA-RC");
+ break;
+ }
+ switch ((capa & 0x0030) >> 4) {
+ case 0:
+ break;
+ case 1:
+ printf(" 2-GTKSA-RC");
+ break;
+ case 2:
+ printf(" 4-GTKSA-RC");
+ break;
+ case 3:
+ printf(" 16-GTKSA-RC");
+ break;
+ }
+ if (capa & 0x0040)
+ printf(" MFP-required");
+ if (capa & 0x0080)
+ printf(" MFP-capable");
+ if (capa & 0x0200)
+ printf(" Peerkey-enabled");
+ if (capa & 0x0400)
+ printf(" SPP-AMSDU-capable");
+ if (capa & 0x0800)
+ printf(" SPP-AMSDU-required");
+ printf(" (0x%.4x)\n", capa);
+ data += 2;
+ len -= 2;
+ }
+
+ invalid:
+ if (len != 0) {
+ printf("\t\t * bogus tail data (%d):", len);
+ while (len) {
+ printf(" %.2x", *data);
+ data++;
+ len--;
+ }
+ printf("\n");
+ }
+}
+
+static void print_rsn(const uint8_t type, uint8_t len, const uint8_t *data)
+{
+ print_rsn_ie("CCMP", "IEEE 802.1X", len, data);
+}
+
+/*
+ * There are only 4 possible values, we just use a case instead of computing it,
+ * but technically this can also be computed through the formula:
+ *
+ * Max AMPDU length = (2 ^ (13 + exponent)) - 1 bytes
+ */
+__u32 compute_ampdu_length(__u8 exponent)
+{
+ switch (exponent) {
+ case 0: return 8191; /* (2 ^(13 + 0)) -1 */
+ case 1: return 16383; /* (2 ^(13 + 1)) -1 */
+ case 2: return 32767; /* (2 ^(13 + 2)) -1 */
+ case 3: return 65535; /* (2 ^(13 + 3)) -1 */
+ default: return 0;
+ }
+}
+
+const char *print_ampdu_space(__u8 space)
+{
+ switch (space) {
+ case 0: return "No restriction";
+ case 1: return "1/4 usec";
+ case 2: return "1/2 usec";
+ case 3: return "1 usec";
+ case 4: return "2 usec";
+ case 5: return "4 usec";
+ case 6: return "8 usec";
+ case 7: return "16 usec";
+ default:
+ return "Uknown";
+ }
+}
+
+static void print_ht_capa(const uint8_t type, uint8_t len, const uint8_t *data)
+{
+#define PRINT_HT_CAP(_cond, _str) \
+ do { \
+ if (_cond) \
+ printf("\t\t\t" _str "\n"); \
+ } while (0)
+ struct ht_cap_data {
+ __u16 cap;
+ __u8 ampdu_params;
+ struct {
+ __u8 rx_mcs_bitmask[10]; /* last 3 bits reserved */
+ __u16 max_rx_rate_1mbps: 10,
+ reserved_0: 6;
+ __u8 tx_rx_mcs_defined:1,
+ tx_rx_mcs_not_equal:1,
+ tx_max_streams:2,
+ tx_unequal_modulation:1,
+ reserved_1:3; /* 3 reserved bits here */
+ __u8 reserved_2[3]; /* 24 reserved bits here = 27 */
+ } mcs_set;
+ __u16 ht_extend_cap;
+ __u32 tx_beamform_cap;
+ __u8 asel_cap;
+ } __attribute__((packed)) ht_cap;
+ struct ht_cap_data *htc = &ht_cap;
+ __u8 ampdu_exponent, ampdu_spacing, bit;
+ __u32 max_ampdu_length, i;
+ bool tx_rx_mcs_equal = false;
+
+ if (len != 26) {
+ printf("\n\t\tHT Capability IE len != expected 26 bytes, skipping parse\n");
+ return;
+ }
+
+ memcpy(&ht_cap, data, 26);
+
+ printf("\n\t\tCapabilities: %#.4x\n", htc->cap);
+
+ PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDCP");
+ PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
+ PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
+
+ PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
+ PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
+ PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
+
+ PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
+ PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
+ PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
+ PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
+
+ PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
+ PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
+ PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
+ PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
+
+ PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
+
+ PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: 3839 bytes");
+ PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: 7935 bytes");
+
+ /*
+ * For beacons and probe response this would mean the BSS
+ * does or does not allow the usage of DSSS/CCK HT40.
+ * Otherwise it means the STA does or does not use
+ * DSSS/CCK HT40.
+ */
+ PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
+ PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
+
+ /* BIT(13) is reserved */
+
+ PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
+
+ PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
+
+ ampdu_exponent = htc->ampdu_params & 0x3;
+ max_ampdu_length = compute_ampdu_length(ampdu_exponent);
+ if (max_ampdu_length) {
+ printf("\t\tMaximum RX AMPDU length %d bytes (exponent: 0x0%02x)\n",
+ compute_ampdu_length(ampdu_exponent), ampdu_exponent);
+ }
else
- *first = false;
+ printf("\t\tMaximum RX AMPDU length: unrecognized bytes "
+ "(exponent: %d)\n", ampdu_exponent);
+
+
+ ampdu_spacing = (htc->ampdu_params >> 2) & 0x3 ;
+ printf("\t\tMinimum RX AMPDU time spacing: %s (0x%02x)\n",
+ print_ampdu_space(ampdu_spacing), ampdu_spacing);
+
+ /* This is the whole MCS set, which is 16 bytes */
+ printf("\t\tMCS set:");
+ data+=2;
+ print_mcs_set(data);
+ printf("\n");
+
+ if (htc->mcs_set.tx_rx_mcs_defined && htc->mcs_set.tx_rx_mcs_not_equal)
+ tx_rx_mcs_equal = true;
+ if (tx_rx_mcs_equal)
+ printf("\t\tSupported TX/RX MCS Indexes:\n");
+ else
+ printf("\t\tSupported RX MCS Indexes:\n");
+ /*
+ * Parses the RX MCS rates. Only 10 bits correspond to actual MCS rates
+ * MCS [0-76]
+ */
+ for (i = 0; i < 10; i++) {
+ for (bit = 0; bit < 8; bit++) {
+ /* Only bits 0-76 are valid, bits 76-79 are reserved */
+ if (((i * 8) + bit) > 76)
+ break;
+ if (htc->mcs_set.rx_mcs_bitmask[i] & BIT(bit))
+ printf("\t\t\tMCS Index %d\n",
+ (i * 8) + bit);
+ }
+ }
+
+ if (!htc->mcs_set.tx_rx_mcs_defined) {
+ /* This is actually quite common */
+ printf("\t\tNo TX MCS set defined\n");
+ goto out;
+ }
+
+ if (htc->mcs_set.tx_rx_mcs_not_equal) {
+ printf("\t\tMaximum supported TX spatial streams: %d\n",
+ htc->mcs_set.tx_max_streams);
+ printf("\t\tTX unequal modulation ");
+ if (htc->mcs_set.tx_unequal_modulation)
+ printf("supported\n");
+ else
+ printf("unsupported\n");
+ }
+
+out:
+ return;
}
-static void print_wifi_wps(unsigned char type, unsigned char len, unsigned char *data)
+static void print_capabilities(const uint8_t type, uint8_t len, const uint8_t *data)
{
+ int i, base, bit;
bool first = true;
- __u16 subtype, sublen;
- printf("\tWPS:");
+
+ for (i = 0; i < len; i++) {
+ base = i * 8;
+
+ for (bit = 0; bit < 8; bit++) {
+ if (!(data[i] & (1 << bit)))
+ continue;
+
+ if (!first)
+ printf(",");
+ else
+ first = false;
+
+ switch (bit + base) {
+ case 0:
+ printf(" HT Information Exchange Supported");
+ break;
+ case 1:
+ printf(" On-demand Beacon");
+ break;
+ case 2:
+ printf(" Extended Channel Switching");
+ break;
+ case 3:
+ printf(" Wave Indication");
+ break;
+ case 4:
+ printf(" PSMP Capability");
+ break;
+ case 5:
+ printf(" Service Interval Granularity");
+ break;
+ case 6:
+ printf(" S-PSMP Capability");
+ break;
+ default:
+ printf(" %d", bit);
+ break;
+ }
+ }
+ }
+
+ printf("\n");
+}
+
+struct ie_print {
+ const char *name;
+ void (*print)(const uint8_t type, uint8_t len, const uint8_t *data);
+ uint8_t minlen, maxlen;
+ uint8_t flags;
+};
+
+static void print_ie(const struct ie_print *p, const uint8_t type,
+ uint8_t len, const uint8_t *data)
+{
+ int i;
+
+ if (!p->print)
+ return;
+
+ printf("\t%s:", p->name);
+ if (len < p->minlen || len > p->maxlen) {
+ if (len > 1) {
+ printf(" <invalid: %d bytes:", len);
+ for (i = 0; i < len; i++)
+ printf(" %.02x", data[i]);
+ printf(">\n");
+ } else if (len)
+ printf(" <invalid: 1 byte: %.02x>\n", data[0]);
+ else
+ printf(" <invalid: no data>\n");
+ return;
+ }
+
+ p->print(type, len, data);
+}
+
+#define PRINT_IGN { \
+ .name = "IGNORE", \
+ .print = NULL, \
+ .minlen = 0, \
+ .maxlen = 255, \
+}
+
+static const struct ie_print ieprinters[] = {
+ [0] = { "SSID", print_ssid, 0, 32, BIT(PRINT_SCAN) | BIT(PRINT_LINK), },
+ [1] = { "Supported rates", print_supprates, 0, 255, BIT(PRINT_SCAN), },
+ [3] = { "DS Parameter set", print_ds, 1, 1, BIT(PRINT_SCAN), },
+ [5] = PRINT_IGN,
+ [7] = { "Country", print_country, 3, 255, BIT(PRINT_SCAN), },
+ [32] = { "Power constraint", print_powerconstraint, 1, 1, BIT(PRINT_SCAN), },
+ [42] = { "ERP", print_erp, 1, 255, BIT(PRINT_SCAN), },
+ [45] = { "HT capabilities", print_ht_capa, 1, 255, BIT(PRINT_SCAN), },
+ [48] = { "RSN", print_rsn, 2, 255, BIT(PRINT_SCAN), },
+ [50] = { "Extended supported rates", print_supprates, 0, 255, BIT(PRINT_SCAN), },
+ [127] = { "Extended capabilities", print_capabilities, 0, 255, BIT(PRINT_SCAN), },
+};
+
+static void print_wifi_wpa(const uint8_t type, uint8_t len, const uint8_t *data)
+{
+ print_rsn_ie("TKIP", "IEEE 802.1X", len, data);
+}
+
+static bool print_wifi_wmm_param(const uint8_t *data, uint8_t len)
+{
+ int i;
+ static const char *aci_tbl[] = { "BE", "BK", "VI", "VO" };
+
+ if (len < 19)
+ goto invalid;
+
+ if (data[0] != 1) {
+ printf("Parameter: not version 1: ");
+ return false;
+ }
+
+ printf("\t* Parameter version 1");
+
+ data++;
+
+ if (data[0] & 0x80)
+ printf("\n\t\t* u-APSD");
+
+ data += 2;
+
+ for (i = 0; i < 4; i++) {
+ printf("\n\t\t* %s:", aci_tbl[(data[0] >> 5) & 3]);
+ if (data[4] & 0x10)
+ printf(" acm");
+ printf(" CW %d-%d", (1 << (data[1] & 0xf)) - 1,
+ (1 << (data[1] >> 4)) - 1);
+ printf(", AIFSN %d", data[0] & 0xf);
+ if (data[2] | data[3])
+ printf(", TXOP %d usec", (data[2] + (data[3] << 8)) * 32);
+ data += 4;
+ }
+
+ printf("\n");
+ return true;
+
+ invalid:
+ printf("invalid: ");
+ return false;
+}
+
+static void print_wifi_wmm(const uint8_t type, uint8_t len, const uint8_t *data)
+{
+ int i;
+
+ switch (data[0]) {
+ case 0x00:
+ printf(" information:");
+ break;
+ case 0x01:
+ if (print_wifi_wmm_param(data + 1, len - 1))
+ return;
+ break;
+ default:
+ printf(" type %d:", data[0]);
+ break;
+ }
+
+ for(i = 1; i < len; i++)
+ printf(" %.02x", data[i]);
+ printf("\n");
+}
+
+static void print_wifi_wps(const uint8_t type, uint8_t len, const uint8_t *data)
+{
+ bool first = true;
+ __u16 subtype, sublen;
while (len >= 4) {
subtype = (data[0] << 8) + data[1];
switch (subtype) {
case 0x104a:
tab_on_first(&first);
- printf("\t * Version: %#.2x\n", data[4]);
+ printf("\t * Version: %d.%d\n", data[4] >> 4, data[4] & 0xF);
break;
case 0x1011:
tab_on_first(&first);
printf("\t * Model: %.*s\n", sublen, data + 4);
break;
case 0x1057: {
- __u16 val = (data[4] << 8) | data[5];
+ __u8 val = data[4];
tab_on_first(&first);
- printf("\t * AP setup locked: 0x%.4x\n", val);
+ printf("\t * AP setup locked: 0x%.2x\n", val);
break;
}
case 0x1008: {
}
}
-static const printfn wifiprinters[] = {
- [4] = print_wifi_wps,
+static const struct ie_print wifiprinters[] = {
+ [1] = { "WPA", print_wifi_wpa, 2, 255, BIT(PRINT_SCAN), },
+ [2] = { "WMM", print_wifi_wmm, 1, 255, BIT(PRINT_SCAN), },
+ [4] = { "WPS", print_wifi_wps, 0, 255, BIT(PRINT_SCAN), },
};
static void print_vendor(unsigned char len, unsigned char *data,
- struct scan_params *params)
+ bool unknown, enum print_ie_type ptype)
{
int i;
return;
}
- if (len >= 4 && data[0] == 0x00 && data[1] == 0x50 && data[2] == 0xF2) {
- if (data[3] < ARRAY_SIZE(wifiprinters) && wifiprinters[data[3]])
- return wifiprinters[data[3]](data[3], len - 4, data + 4);
- if (!params->unknown)
+ if (len >= 4 && memcmp(data, wifi_oui, 3) == 0) {
+ if (data[3] < ARRAY_SIZE(wifiprinters) &&
+ wifiprinters[data[3]].name &&
+ wifiprinters[data[3]].flags & BIT(ptype)) {
+ print_ie(&wifiprinters[data[3]], data[3], len - 4, data + 4);
+ return;
+ }
+ if (!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");
return;
}
- if (!params->unknown)
+ if (!unknown)
return;
printf("\tVendor specific: OUI %.2x:%.2x:%.2x, data:",
printf("\n");
}
-static void print_ies(unsigned char *ie, int ielen, struct scan_params *params)
+void print_ies(unsigned char *ie, int ielen, bool unknown,
+ enum print_ie_type ptype)
{
while (ielen >= 2 && ielen >= ie[1]) {
- if (ie[0] < ARRAY_SIZE(ieprinters) && ieprinters[ie[0]]) {
- ieprinters[ie[0]](ie[0], ie[1], ie + 2);
+ if (ie[0] < ARRAY_SIZE(ieprinters) &&
+ ieprinters[ie[0]].name &&
+ ieprinters[ie[0]].flags & BIT(ptype)) {
+ print_ie(&ieprinters[ie[0]], ie[0], ie[1], ie + 2);
} else if (ie[0] == 221 /* vendor */) {
- print_vendor(ie[1], ie + 2, params);
- } else if (params->unknown) {
+ print_vendor(ie[1], ie + 2, unknown, ptype);
+ } else if (unknown) {
int i;
printf("\tUnknown IE (%d):", ie[0]);
[NL80211_BSS_INFORMATION_ELEMENTS] = { },
[NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
[NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
+ [NL80211_BSS_STATUS] = { .type = NLA_U32 },
+ [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
};
+ struct scan_params *params = arg;
nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
genlmsg_attrlen(gnlh, 0), NULL);
if (!tb[NL80211_ATTR_BSS]) {
- fprintf(stderr, "bss info missing!");
+ fprintf(stderr, "bss info missing!\n");
return NL_SKIP;
}
if (nla_parse_nested(bss, NL80211_BSS_MAX,
tb[NL80211_ATTR_BSS],
bss_policy)) {
- fprintf(stderr, "failed to parse nested attributes!");
+ fprintf(stderr, "failed to parse nested attributes!\n");
return NL_SKIP;
}
mac_addr_n2a(mac_addr, nla_data(bss[NL80211_BSS_BSSID]));
if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), dev);
- printf("BSS %s (on %s)\n", mac_addr, dev);
+ printf("BSS %s (on %s)", mac_addr, dev);
+
+ if (bss[NL80211_BSS_STATUS]) {
+ switch (nla_get_u32(bss[NL80211_BSS_STATUS])) {
+ case NL80211_BSS_STATUS_AUTHENTICATED:
+ printf(" -- authenticated");
+ break;
+ case NL80211_BSS_STATUS_ASSOCIATED:
+ printf(" -- associated");
+ break;
+ case NL80211_BSS_STATUS_IBSS_JOINED:
+ printf(" -- joined");
+ break;
+ default:
+ printf(" -- unknown status: %d",
+ nla_get_u32(bss[NL80211_BSS_STATUS]));
+ break;
+ }
+ }
+ printf("\n");
if (bss[NL80211_BSS_TSF]) {
unsigned long long tsf;
if (bss[NL80211_BSS_BEACON_INTERVAL])
printf("\tbeacon interval: %d\n",
nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]));
- if (bss[NL80211_BSS_CAPABILITY])
- printf("\tcapability: 0x%.4x\n",
- nla_get_u16(bss[NL80211_BSS_CAPABILITY]));
+ if (bss[NL80211_BSS_CAPABILITY]) {
+ __u16 capa = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
+ printf("\tcapability:");
+ if (capa & WLAN_CAPABILITY_ESS)
+ printf(" ESS");
+ if (capa & WLAN_CAPABILITY_IBSS)
+ printf(" IBSS");
+ if (capa & WLAN_CAPABILITY_PRIVACY)
+ printf(" Privacy");
+ if (capa & WLAN_CAPABILITY_SHORT_PREAMBLE)
+ printf(" ShortPreamble");
+ if (capa & WLAN_CAPABILITY_PBCC)
+ printf(" PBCC");
+ if (capa & WLAN_CAPABILITY_CHANNEL_AGILITY)
+ printf(" ChannelAgility");
+ if (capa & WLAN_CAPABILITY_SPECTRUM_MGMT)
+ printf(" SpectrumMgmt");
+ if (capa & WLAN_CAPABILITY_QOS)
+ printf(" QoS");
+ if (capa & WLAN_CAPABILITY_SHORT_SLOT_TIME)
+ printf(" ShortSlotTime");
+ if (capa & WLAN_CAPABILITY_APSD)
+ printf(" APSD");
+ if (capa & WLAN_CAPABILITY_DSSS_OFDM)
+ printf(" DSSS-OFDM");
+ printf(" (0x%.4x)\n", capa);
+ }
if (bss[NL80211_BSS_SIGNAL_MBM]) {
int s = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
printf("\tsignal: %d.%.2d dBm\n", s/100, s%100);
unsigned char s = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
printf("\tsignal: %d/100\n", s);
}
+ if (bss[NL80211_BSS_SEEN_MS_AGO]) {
+ int age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
+ printf("\tlast seen: %d ms ago\n", age);
+ }
if (bss[NL80211_BSS_INFORMATION_ELEMENTS])
print_ies(nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]),
nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]),
- arg);
+ params->unknown, params->type);
return NL_SKIP;
}
if (argc == 1 && !strcmp(argv[0], "-u"))
scan_params.unknown = true;
+ scan_params.type = PRINT_SCAN;
+
nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_bss_handler,
&scan_params);
return 0;
}
-COMMAND(scan, dump, "[-u]",
- NL80211_CMD_GET_SCAN, NLM_F_DUMP, CIB_NETDEV, handle_scan_dump);
static int handle_scan_combined(struct nl80211_state *state,
struct nl_cb *cb,
struct nl_msg *msg,
int argc, char **argv)
{
- static char *trig_argv[] = {
- NULL,
- "scan",
- "trigger",
- };
+ char **trig_argv;
static char *dump_argv[] = {
NULL,
"scan",
"dump",
+ NULL,
};
static const __u32 cmds[] = {
NL80211_CMD_NEW_SCAN_RESULTS,
NL80211_CMD_SCAN_ABORTED,
};
- int err;
+ int trig_argc, dump_argc, err;
+ if (argc >= 3 && !strcmp(argv[2], "-u")) {
+ dump_argc = 4;
+ dump_argv[3] = "-u";
+ } else
+ dump_argc = 3;
+
+ trig_argc = 3 + (argc - 2) + (3 - dump_argc);
+ trig_argv = calloc(trig_argc, sizeof(*trig_argv));
+ if (!trig_argv)
+ return -ENOMEM;
trig_argv[0] = argv[0];
- err = handle_cmd(state, II_NETDEV, ARRAY_SIZE(trig_argv), trig_argv);
+ trig_argv[1] = "scan";
+ trig_argv[2] = "trigger";
+ int i;
+ for (i = 0; i < argc - 2 - (dump_argc - 3); i++)
+ trig_argv[i + 3] = argv[i + 2 + (dump_argc - 3)];
+ err = handle_cmd(state, II_NETDEV, trig_argc, trig_argv);
+ free(trig_argv);
if (err)
return err;
}
dump_argv[0] = argv[0];
- return handle_cmd(state, II_NETDEV, ARRAY_SIZE(dump_argv), dump_argv);
+ return handle_cmd(state, II_NETDEV, dump_argc, dump_argv);
}
-TOPLEVEL(scan, NULL, 0, 0, CIB_NETDEV, handle_scan_combined);
+TOPLEVEL(scan, "[-u] [freq <freq>*] [ssid <ssid>*|passive]", 0, 0,
+ CIB_NETDEV, handle_scan_combined,
+ "Scan on the given frequencies and probe for the given SSIDs\n"
+ "(or wildcard if not given) unless passive scanning is requested.\n"
+ "If -u is specified print unknown data in the scan results.");
+COMMAND(scan, dump, "[-u]",
+ NL80211_CMD_GET_SCAN, NLM_F_DUMP, CIB_NETDEV, handle_scan_dump,
+ "Dump the current scan results. If -u is specified, print unknown\n"
+ "data in scan results.");
+COMMAND(scan, trigger, "[freq <freq>*] [ssid <ssid>*|passive]",
+ NL80211_CMD_TRIGGER_SCAN, 0, CIB_NETDEV, handle_scan,
+ "Trigger a scan on the given frequencies with probing for the given\n"
+ "SSIDs (or wildcard if not given) unless passive scanning is requested.");
projects / thirdparty / iw.git / blobdiff