package/network/services/hostapd/files/wdev.uc

   1 #!/usr/bin/env ucode
   2 'use strict';
   3 import { vlist_new, is_equal, wdev_create, wdev_set_mesh_params, wdev_remove, wdev_set_up, phy_open } from "/usr/share/hostap/common.uc";
   4 import { readfile, writefile, basename, readlink, glob } from "fs";
   5 let libubus = require("ubus");
   6
   7 let keep_devices = {};
   8 let phy = shift(ARGV);
   9 let command = shift(ARGV);
  10 let phydev;
  11
  12 function iface_stop(wdev)
  13 {
  14         if (keep_devices[wdev.ifname])
  15                 return;
  16
  17         wdev_remove(wdev.ifname);
  18 }
  19
  20 function iface_start(wdev)
  21 {
  22         let ifname = wdev.ifname;
  23
  24         if (readfile(`/sys/class/net/${ifname}/ifindex`)) {
  25                 wdev_set_up(ifname, false);
  26                 wdev_remove(ifname);
  27         }
  28         let wdev_config = {};
  29         for (let key in wdev)
  30                 wdev_config[key] = wdev[key];
  31         if (!wdev_config.macaddr && wdev.mode != "monitor")
  32                 wdev_config.macaddr = phydev.macaddr_next();
  33         wdev_create(phy, ifname, wdev_config);
  34         wdev_set_up(ifname, true);
  35         if (wdev.freq)
  36                 system(`iw dev ${ifname} set freq ${wdev.freq} ${wdev.htmode}`);
  37         if (wdev.mode == "adhoc") {
  38                 let cmd = ["iw", "dev", ifname, "ibss", "join", wdev.ssid, wdev.freq, wdev.htmode, "fixed-freq" ];
  39                 if (wdev.bssid)
  40                         push(cmd, wdev.bssid);
  41                 for (let key in [ "beacon-interval", "basic-rates", "mcast-rate", "keys" ])
  42                         if (wdev[key])
  43                                 push(cmd, key, wdev[key]);
  44                 system(cmd);
  45         } else if (wdev.mode == "mesh") {
  46                 let cmd = [ "iw", "dev", ifname, "mesh", "join", wdev.ssid, "freq", wdev.freq, wdev.htmode ];
  47                 for (let key in [ "mcast-rate", "beacon-interval" ])
  48                         if (wdev[key])
  49                                 push(cmd, key, wdev[key]);
  50                 system(cmd);
  51
  52                 wdev_set_mesh_params(ifname, wdev);
  53         }
  54 }
  55
  56 function iface_cb(new_if, old_if)
  57 {
  58         if (old_if && new_if && is_equal(old_if, new_if))
  59                 return;
  60
  61         if (old_if)
  62                 iface_stop(old_if);
  63         if (new_if)
  64                 iface_start(new_if);
  65 }
  66
  67 function drop_inactive(config)
  68 {
  69         for (let key in config) {
  70                 if (!readfile(`/sys/class/net/${key}/ifindex`))
  71                         delete config[key];
  72         }
  73 }
  74
  75 function add_ifname(config)
  76 {
  77         for (let key in config)
  78                 config[key].ifname = key;
  79 }
  80
  81 function delete_ifname(config)
  82 {
  83         for (let key in config)
  84                 delete config[key].ifname;
  85 }
  86
  87 function add_existing(phy, config)
  88 {
  89         let wdevs = glob(`/sys/class/ieee80211/${phy}/device/net/*`);
  90         wdevs = map(wdevs, (arg) => basename(arg));
  91         for (let wdev in wdevs) {
  92                 if (config[wdev])
  93                         continue;
  94
  95                 if (basename(readlink(`/sys/class/net/${wdev}/phy80211`)) != phy)
  96                         continue;
  97
  98                 if (trim(readfile(`/sys/class/net/${wdev}/operstate`)) == "down")
  99                         config[wdev] = {};
 100         }
 101 }
 102
 103 function usage()
 104 {
 105         warn(`Usage: ${basename(sourcepath())} <phy> <command> [<arguments>]
 106
 107 Commands:
 108         set_config <config> [<device]...] - set phy configuration
 109         get_macaddr <id>                  - get phy MAC address for vif index <id>
 110 `);
 111         exit(1);
 112 }
 113
 114 const commands = {
 115         set_config: function(args) {
 116                 let statefile = `/var/run/wdev-${phy}.json`;
 117
 118                 let new_config = shift(args);
 119                 for (let dev in ARGV)
 120                         keep_devices[dev] = true;
 121
 122                 if (!new_config)
 123                         usage();
 124
 125                 new_config = json(new_config);
 126                 if (!new_config) {
 127                         warn("Invalid configuration\n");
 128                         exit(1);
 129                 }
 130
 131                 let old_config = readfile(statefile);
 132                 if (old_config)
 133                         old_config = json(old_config);
 134
 135                 let config = vlist_new(iface_cb);
 136                 if (type(old_config) == "object")
 137                         config.data = old_config;
 138
 139                 add_existing(phy, config.data);
 140                 add_ifname(config.data);
 141                 drop_inactive(config.data);
 142
 143                 let ubus = libubus.connect();
 144                 let data = ubus.call("hostapd", "config_get_macaddr_list", { phy: phy });
 145                 let macaddr_list = [];
 146                 if (type(data) == "object" && data.macaddr)
 147                         macaddr_list = data.macaddr;
 148                 ubus.disconnect();
 149                 phydev.macaddr_init(macaddr_list);
 150
 151                 add_ifname(new_config);
 152                 config.update(new_config);
 153
 154                 drop_inactive(config.data);
 155                 delete_ifname(config.data);
 156                 writefile(statefile, sprintf("%J", config.data));
 157         },
 158         get_macaddr: function(args) {
 159                 let data = {};
 160
 161                 for (let arg in args) {
 162                         arg = split(arg, "=", 2);
 163                         data[arg[0]] = arg[1];
 164                 }
 165
 166                 let macaddr = phydev.macaddr_generate(data);
 167                 if (!macaddr) {
 168                         warn(`Could not get MAC address for phy ${phy}\n`);
 169                         exit(1);
 170                 }
 171
 172                 print(macaddr + "\n");
 173         },
 174 };
 175
 176 if (!phy || !command | !commands[command])
 177         usage();
 178
 179 phydev = phy_open(phy);
 180 if (!phydev) {
 181         warn(`PHY ${phy} does not exist\n`);
 182         exit(1);
 183 }
 184
 185 commands[command](ARGV);