Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 1 | #include <net/if.h> |
| 2 | #include <errno.h> |
| 3 | #include <string.h> |
| 4 | #include <ctype.h> |
| 5 | #include <stdbool.h> |
| 6 | |
| 7 | #include <netlink/genl/genl.h> |
| 8 | #include <netlink/genl/family.h> |
| 9 | #include <netlink/genl/ctrl.h> |
| 10 | #include <netlink/msg.h> |
| 11 | #include <netlink/attr.h> |
| 12 | |
| 13 | #include "nl80211.h" |
| 14 | #include "iw.h" |
| 15 | |
| 16 | struct link_result { |
| 17 | uint8_t bssid[8]; |
| 18 | bool link_found; |
| 19 | bool anything_found; |
| 20 | }; |
| 21 | |
| 22 | static struct link_result lr = { .link_found = false }; |
| 23 | |
| 24 | static int link_bss_handler(struct nl_msg *msg, void *arg) |
| 25 | { |
| 26 | struct nlattr *tb[NL80211_ATTR_MAX + 1]; |
| 27 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); |
| 28 | struct nlattr *bss[NL80211_BSS_MAX + 1]; |
| 29 | static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { |
| 30 | [NL80211_BSS_TSF] = { .type = NLA_U64 }, |
| 31 | [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, |
| 32 | [NL80211_BSS_BSSID] = { }, |
| 33 | [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, |
| 34 | [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, |
| 35 | [NL80211_BSS_INFORMATION_ELEMENTS] = { }, |
| 36 | [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, |
| 37 | [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, |
| 38 | [NL80211_BSS_STATUS] = { .type = NLA_U32 }, |
| 39 | }; |
| 40 | struct link_result *result = arg; |
| 41 | char mac_addr[20], dev[20]; |
| 42 | |
| 43 | nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), |
| 44 | genlmsg_attrlen(gnlh, 0), NULL); |
| 45 | |
| 46 | if (!tb[NL80211_ATTR_BSS]) { |
Johannes Berg | 5fe70c0 | 2009-11-11 15:18:43 +0100 | [diff] [blame] | 47 | fprintf(stderr, "bss info missing!\n"); |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 48 | return NL_SKIP; |
| 49 | } |
| 50 | if (nla_parse_nested(bss, NL80211_BSS_MAX, |
| 51 | tb[NL80211_ATTR_BSS], |
| 52 | bss_policy)) { |
Johannes Berg | 5fe70c0 | 2009-11-11 15:18:43 +0100 | [diff] [blame] | 53 | fprintf(stderr, "failed to parse nested attributes!\n"); |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 54 | return NL_SKIP; |
| 55 | } |
| 56 | |
| 57 | if (!bss[NL80211_BSS_BSSID]) |
| 58 | return NL_SKIP; |
| 59 | |
| 60 | if (!bss[NL80211_BSS_STATUS]) |
| 61 | return NL_SKIP; |
| 62 | |
| 63 | mac_addr_n2a(mac_addr, nla_data(bss[NL80211_BSS_BSSID])); |
| 64 | if_indextoname(nla_get_u32(tb[NL80211_ATTR_IFINDEX]), dev); |
| 65 | |
| 66 | switch (nla_get_u32(bss[NL80211_BSS_STATUS])) { |
| 67 | case NL80211_BSS_STATUS_ASSOCIATED: |
| 68 | printf("Connected to %s (on %s)\n", mac_addr, dev); |
| 69 | break; |
| 70 | case NL80211_BSS_STATUS_AUTHENTICATED: |
| 71 | printf("Authenticated with %s (on %s)\n", mac_addr, dev); |
| 72 | return NL_SKIP; |
Johannes Berg | 28b1efb | 2010-06-08 12:40:31 +0200 | [diff] [blame] | 73 | case NL80211_BSS_STATUS_IBSS_JOINED: |
| 74 | printf("Joined IBSS %s (on %s)\n", mac_addr, dev); |
| 75 | break; |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 76 | default: |
| 77 | return NL_SKIP; |
| 78 | } |
| 79 | |
| 80 | result->anything_found = true; |
| 81 | |
| 82 | if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) |
| 83 | print_ies(nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]), |
| 84 | nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]), |
| 85 | false, PRINT_LINK); |
| 86 | |
| 87 | if (bss[NL80211_BSS_FREQUENCY]) |
| 88 | printf("\tfreq: %d\n", |
| 89 | nla_get_u32(bss[NL80211_BSS_FREQUENCY])); |
| 90 | |
| 91 | if (nla_get_u32(bss[NL80211_BSS_STATUS]) != NL80211_BSS_STATUS_ASSOCIATED) |
| 92 | return NL_SKIP; |
| 93 | |
| 94 | /* only in the assoc case do we want more info from station get */ |
| 95 | result->link_found = true; |
| 96 | memcpy(result->bssid, nla_data(bss[NL80211_BSS_BSSID]), 6); |
| 97 | return NL_SKIP; |
| 98 | } |
| 99 | |
| 100 | static int handle_scan_for_link(struct nl80211_state *state, |
| 101 | struct nl_cb *cb, |
| 102 | struct nl_msg *msg, |
Johannes Berg | 05514f9 | 2012-07-19 11:50:50 +0200 | [diff] [blame] | 103 | int argc, char **argv, |
| 104 | enum id_input id) |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 105 | { |
| 106 | if (argc > 0) |
| 107 | return 1; |
| 108 | |
| 109 | nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, link_bss_handler, &lr); |
| 110 | return 0; |
| 111 | } |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 112 | |
| 113 | static int print_link_sta(struct nl_msg *msg, void *arg) |
| 114 | { |
| 115 | struct nlattr *tb[NL80211_ATTR_MAX + 1]; |
| 116 | struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); |
| 117 | struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; |
Paul Stewart | dd8eef9 | 2011-04-28 18:38:41 +0200 | [diff] [blame] | 118 | struct nlattr *binfo[NL80211_STA_BSS_PARAM_MAX + 1]; |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 119 | static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = { |
| 120 | [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 }, |
| 121 | [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 }, |
| 122 | [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 }, |
| 123 | [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 }, |
| 124 | [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 }, |
| 125 | [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, |
| 126 | [NL80211_STA_INFO_TX_BITRATE] = { .type = NLA_NESTED }, |
| 127 | [NL80211_STA_INFO_LLID] = { .type = NLA_U16 }, |
| 128 | [NL80211_STA_INFO_PLID] = { .type = NLA_U16 }, |
| 129 | [NL80211_STA_INFO_PLINK_STATE] = { .type = NLA_U8 }, |
| 130 | }; |
Paul Stewart | dd8eef9 | 2011-04-28 18:38:41 +0200 | [diff] [blame] | 131 | static struct nla_policy bss_policy[NL80211_STA_BSS_PARAM_MAX + 1] = { |
| 132 | [NL80211_STA_BSS_PARAM_CTS_PROT] = { .type = NLA_FLAG }, |
| 133 | [NL80211_STA_BSS_PARAM_SHORT_PREAMBLE] = { .type = NLA_FLAG }, |
| 134 | [NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME] = { .type = NLA_FLAG }, |
| 135 | [NL80211_STA_BSS_PARAM_DTIM_PERIOD] = { .type = NLA_U8 }, |
| 136 | [NL80211_STA_BSS_PARAM_BEACON_INTERVAL] = { .type = NLA_U16 }, |
| 137 | }; |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 138 | |
| 139 | nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), |
| 140 | genlmsg_attrlen(gnlh, 0), NULL); |
| 141 | |
| 142 | if (!tb[NL80211_ATTR_STA_INFO]) { |
Johannes Berg | 5fe70c0 | 2009-11-11 15:18:43 +0100 | [diff] [blame] | 143 | fprintf(stderr, "sta stats missing!\n"); |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 144 | return NL_SKIP; |
| 145 | } |
| 146 | if (nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, |
| 147 | tb[NL80211_ATTR_STA_INFO], |
| 148 | stats_policy)) { |
Johannes Berg | 5fe70c0 | 2009-11-11 15:18:43 +0100 | [diff] [blame] | 149 | fprintf(stderr, "failed to parse nested attributes!\n"); |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 150 | return NL_SKIP; |
| 151 | } |
| 152 | |
| 153 | if (sinfo[NL80211_STA_INFO_RX_BYTES] && sinfo[NL80211_STA_INFO_RX_PACKETS]) |
Johannes Berg | 2618141 | 2009-08-17 12:51:58 +0200 | [diff] [blame] | 154 | printf("\tRX: %u bytes (%u packets)\n", |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 155 | nla_get_u32(sinfo[NL80211_STA_INFO_RX_BYTES]), |
| 156 | nla_get_u32(sinfo[NL80211_STA_INFO_RX_PACKETS])); |
| 157 | if (sinfo[NL80211_STA_INFO_TX_BYTES] && sinfo[NL80211_STA_INFO_TX_PACKETS]) |
Johannes Berg | 2618141 | 2009-08-17 12:51:58 +0200 | [diff] [blame] | 158 | printf("\tTX: %u bytes (%u packets)\n", |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 159 | nla_get_u32(sinfo[NL80211_STA_INFO_TX_BYTES]), |
| 160 | nla_get_u32(sinfo[NL80211_STA_INFO_TX_PACKETS])); |
| 161 | if (sinfo[NL80211_STA_INFO_SIGNAL]) |
| 162 | printf("\tsignal: %d dBm\n", |
| 163 | (int8_t)nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL])); |
| 164 | |
| 165 | if (sinfo[NL80211_STA_INFO_TX_BITRATE]) { |
Johannes Berg | 6417959 | 2013-04-10 11:42:41 +0200 | [diff] [blame] | 166 | char buf[100]; |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 167 | |
Felix Fietkau | e94f020 | 2013-07-11 14:20:37 +0200 | [diff] [blame] | 168 | parse_bitrate(sinfo[NL80211_STA_INFO_TX_BITRATE], buf, sizeof(buf)); |
Johannes Berg | 6417959 | 2013-04-10 11:42:41 +0200 | [diff] [blame] | 169 | printf("\ttx bitrate: %s\n", buf); |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 170 | } |
| 171 | |
Paul Stewart | dd8eef9 | 2011-04-28 18:38:41 +0200 | [diff] [blame] | 172 | if (sinfo[NL80211_STA_INFO_BSS_PARAM]) { |
| 173 | if (nla_parse_nested(binfo, NL80211_STA_BSS_PARAM_MAX, |
| 174 | sinfo[NL80211_STA_INFO_BSS_PARAM], |
| 175 | bss_policy)) { |
| 176 | fprintf(stderr, "failed to parse nested bss parameters!\n"); |
| 177 | } else { |
| 178 | char *delim = ""; |
| 179 | printf("\n\tbss flags:\t"); |
| 180 | if (binfo[NL80211_STA_BSS_PARAM_CTS_PROT]) { |
| 181 | printf("CTS-protection"); |
| 182 | delim = " "; |
| 183 | } |
| 184 | if (binfo[NL80211_STA_BSS_PARAM_SHORT_PREAMBLE]) { |
| 185 | printf("%sshort-preamble", delim); |
| 186 | delim = " "; |
| 187 | } |
| 188 | if (binfo[NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME]) |
| 189 | printf("%sshort-slot-time", delim); |
| 190 | printf("\n\tdtim period:\t%d", |
| 191 | nla_get_u8(binfo[NL80211_STA_BSS_PARAM_DTIM_PERIOD])); |
| 192 | printf("\n\tbeacon int:\t%d", |
| 193 | nla_get_u16(binfo[NL80211_STA_BSS_PARAM_BEACON_INTERVAL])); |
| 194 | printf("\n"); |
| 195 | } |
| 196 | } |
| 197 | |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 198 | return NL_SKIP; |
| 199 | } |
| 200 | |
| 201 | static int handle_link_sta(struct nl80211_state *state, |
| 202 | struct nl_cb *cb, |
| 203 | struct nl_msg *msg, |
Johannes Berg | 05514f9 | 2012-07-19 11:50:50 +0200 | [diff] [blame] | 204 | int argc, char **argv, |
| 205 | enum id_input id) |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 206 | { |
| 207 | unsigned char mac_addr[ETH_ALEN]; |
| 208 | |
| 209 | if (argc < 1) |
| 210 | return 1; |
| 211 | |
| 212 | if (mac_addr_a2n(mac_addr, argv[0])) { |
| 213 | fprintf(stderr, "invalid mac address\n"); |
| 214 | return 2; |
| 215 | } |
| 216 | |
| 217 | argc--; |
| 218 | argv++; |
| 219 | |
| 220 | if (argc) |
| 221 | return 1; |
| 222 | |
| 223 | NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr); |
| 224 | |
| 225 | nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, print_link_sta, NULL); |
| 226 | |
| 227 | return 0; |
| 228 | nla_put_failure: |
| 229 | return -ENOBUFS; |
| 230 | } |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 231 | |
| 232 | static int handle_link(struct nl80211_state *state, struct nl_cb *cb, |
Johannes Berg | 05514f9 | 2012-07-19 11:50:50 +0200 | [diff] [blame] | 233 | struct nl_msg *msg, int argc, char **argv, |
| 234 | enum id_input id) |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 235 | { |
| 236 | char *link_argv[] = { |
| 237 | NULL, |
| 238 | "link", |
| 239 | "get_bss", |
| 240 | NULL, |
| 241 | }; |
| 242 | char *station_argv[] = { |
| 243 | NULL, |
| 244 | "link", |
| 245 | "get_sta", |
| 246 | NULL, |
| 247 | NULL, |
| 248 | }; |
| 249 | char bssid_buf[3*6]; |
| 250 | int err; |
| 251 | |
| 252 | link_argv[0] = argv[0]; |
Johannes Berg | 75f4204 | 2012-07-19 08:36:05 +0200 | [diff] [blame] | 253 | err = handle_cmd(state, id, 3, link_argv); |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 254 | if (err) |
| 255 | return err; |
| 256 | |
| 257 | if (!lr.link_found) { |
| 258 | if (!lr.anything_found) |
Johannes Berg | bb68dbd | 2009-07-29 02:05:33 +0200 | [diff] [blame] | 259 | printf("Not connected.\n"); |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 260 | return 0; |
| 261 | } |
| 262 | |
| 263 | mac_addr_n2a(bssid_buf, lr.bssid); |
| 264 | bssid_buf[17] = '\0'; |
| 265 | |
| 266 | station_argv[0] = argv[0]; |
| 267 | station_argv[3] = bssid_buf; |
Johannes Berg | 75f4204 | 2012-07-19 08:36:05 +0200 | [diff] [blame] | 268 | return handle_cmd(state, id, 4, station_argv); |
Johannes Berg | febeb0c | 2009-07-25 17:31:08 +0200 | [diff] [blame] | 269 | } |
| 270 | TOPLEVEL(link, NULL, 0, 0, CIB_NETDEV, handle_link, |
| 271 | "Print information about the current link, if any."); |
Johannes Berg | 4698bfc | 2009-08-24 12:53:34 +0200 | [diff] [blame] | 272 | HIDDEN(link, get_sta, "", NL80211_CMD_GET_STATION, 0, |
| 273 | CIB_NETDEV, handle_link_sta); |
| 274 | HIDDEN(link, get_bss, NULL, NL80211_CMD_GET_SCAN, NLM_F_DUMP, |
| 275 | CIB_NETDEV, handle_scan_for_link); |