mirror of
https://github.com/openwrt/openwrt.git
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09b9d732ec
Improves reliability in error handling
Signed-off-by: Felix Fietkau <nbd@nbd.name>
(cherry picked from commit a511480368)
812 lines
18 KiB
Ucode
812 lines
18 KiB
Ucode
let libubus = require("ubus");
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import { open, readfile } from "fs";
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import { wdev_create, wdev_remove, is_equal, vlist_new, phy_is_fullmac, phy_open } from "common";
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let ubus = libubus.connect();
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hostapd.data.config = {};
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hostapd.data.file_fields = {
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vlan_file: true,
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wpa_psk_file: true,
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accept_mac_file: true,
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deny_mac_file: true,
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eap_user_file: true,
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ca_cert: true,
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server_cert: true,
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server_cert2: true,
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private_key: true,
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private_key2: true,
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dh_file: true,
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eap_sim_db: true,
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};
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function iface_remove(cfg)
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{
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if (!cfg || !cfg.bss || !cfg.bss[0] || !cfg.bss[0].ifname)
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return;
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for (let bss in cfg.bss)
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wdev_remove(bss.ifname);
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}
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function iface_gen_config(phy, config, start_disabled)
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{
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let str = `data:
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${join("\n", config.radio.data)}
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channel=${config.radio.channel}
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`;
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for (let i = 0; i < length(config.bss); i++) {
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let bss = config.bss[i];
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let type = i > 0 ? "bss" : "interface";
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let nasid = bss.nasid ?? replace(bss.bssid, ":", "");
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str += `
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${type}=${bss.ifname}
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bssid=${bss.bssid}
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${join("\n", bss.data)}
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nas_identifier=${nasid}
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`;
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if (start_disabled)
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str += `
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start_disabled=1
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`;
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}
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return str;
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}
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function iface_freq_info(iface, config, params)
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{
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let freq = params.frequency;
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if (!freq)
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return null;
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let sec_offset = params.sec_chan_offset;
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if (sec_offset != -1 && sec_offset != 1)
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sec_offset = 0;
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let width = 0;
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for (let line in config.radio.data) {
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if (!sec_offset && match(line, /^ht_capab=.*HT40/)) {
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sec_offset = null; // auto-detect
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continue;
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}
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let val = match(line, /^(vht_oper_chwidth|he_oper_chwidth)=(\d+)/);
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if (!val)
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continue;
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val = int(val[2]);
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if (val > width)
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width = val;
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}
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if (freq < 4000)
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width = 0;
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return hostapd.freq_info(freq, sec_offset, width);
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}
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function iface_add(phy, config, phy_status)
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{
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let config_inline = iface_gen_config(phy, config, !!phy_status);
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let bss = config.bss[0];
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let ret = hostapd.add_iface(`bss_config=${phy}:${config_inline}`);
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if (ret < 0)
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return false;
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if (!phy_status)
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return true;
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let iface = hostapd.interfaces[phy];
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if (!iface)
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return false;
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let freq_info = iface_freq_info(iface, config, phy_status);
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return iface.start(freq_info) >= 0;
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}
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function iface_config_macaddr_list(config)
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{
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let macaddr_list = {};
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for (let i = 0; i < length(config.bss); i++) {
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let bss = config.bss[i];
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if (!bss.default_macaddr)
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macaddr_list[bss.bssid] = i;
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}
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return macaddr_list;
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}
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function iface_restart(phydev, config, old_config)
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{
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let phy = phydev.name;
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hostapd.remove_iface(phy);
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iface_remove(old_config);
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iface_remove(config);
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if (!config.bss || !config.bss[0]) {
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hostapd.printf(`No bss for phy ${phy}`);
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return;
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}
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phydev.macaddr_init(iface_config_macaddr_list(config));
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for (let i = 0; i < length(config.bss); i++) {
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let bss = config.bss[i];
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if (bss.default_macaddr)
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bss.bssid = phydev.macaddr_next();
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}
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let bss = config.bss[0];
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let err = wdev_create(phy, bss.ifname, { mode: "ap" });
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if (err)
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hostapd.printf(`Failed to create ${bss.ifname} on phy ${phy}: ${err}`);
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let ubus = hostapd.data.ubus;
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let phy_status = ubus.call("wpa_supplicant", "phy_status", { phy: phy });
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if (phy_status && phy_status.state == "COMPLETED") {
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if (iface_add(phy, config, phy_status))
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return;
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hostapd.printf(`Failed to bring up phy ${phy} ifname=${bss.ifname} with supplicant provided frequency`);
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}
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ubus.call("wpa_supplicant", "phy_set_state", { phy: phy, stop: true });
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if (!iface_add(phy, config))
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hostapd.printf(`hostapd.add_iface failed for phy ${phy} ifname=${bss.ifname}`);
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ubus.call("wpa_supplicant", "phy_set_state", { phy: phy, stop: false });
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}
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function array_to_obj(arr, key, start)
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{
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let obj = {};
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start ??= 0;
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for (let i = start; i < length(arr); i++) {
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let cur = arr[i];
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obj[cur[key]] = cur;
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}
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return obj;
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}
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function find_array_idx(arr, key, val)
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{
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for (let i = 0; i < length(arr); i++)
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if (arr[i][key] == val)
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return i;
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return -1;
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}
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function bss_reload_psk(bss, config, old_config)
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{
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if (is_equal(old_config.hash.wpa_psk_file, config.hash.wpa_psk_file))
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return;
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old_config.hash.wpa_psk_file = config.hash.wpa_psk_file;
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if (!is_equal(old_config, config))
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return;
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let ret = bss.ctrl("RELOAD_WPA_PSK");
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ret ??= "failed";
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hostapd.printf(`Reload WPA PSK file for bss ${config.ifname}: ${ret}`);
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}
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function remove_file_fields(config)
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{
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return filter(config, (line) => !hostapd.data.file_fields[split(line, "=")[0]]);
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}
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function bss_remove_file_fields(config)
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{
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let new_cfg = {};
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for (let key in config)
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new_cfg[key] = config[key];
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new_cfg.data = remove_file_fields(new_cfg.data);
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new_cfg.hash = {};
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for (let key in config.hash)
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new_cfg.hash[key] = config.hash[key];
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delete new_cfg.hash.wpa_psk_file;
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delete new_cfg.hash.vlan_file;
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return new_cfg;
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}
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function bss_config_hash(config)
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{
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return hostapd.sha1(remove_file_fields(config) + "");
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}
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function bss_find_existing(config, prev_config, prev_hash)
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{
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let hash = bss_config_hash(config.data);
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for (let i = 0; i < length(prev_config.bss); i++) {
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if (!prev_hash[i] || hash != prev_hash[i])
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continue;
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prev_hash[i] = null;
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return i;
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}
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return -1;
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}
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function get_config_bss(config, idx)
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{
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if (!config.bss[idx]) {
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hostapd.printf(`Invalid bss index ${idx}`);
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return null;
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}
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let ifname = config.bss[idx].ifname;
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if (!ifname)
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hostapd.printf(`Could not find bss ${config.bss[idx].ifname}`);
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return hostapd.bss[ifname];
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}
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function iface_reload_config(phydev, config, old_config)
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{
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let phy = phydev.name;
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if (!old_config || !is_equal(old_config.radio, config.radio))
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return false;
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if (is_equal(old_config.bss, config.bss))
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return true;
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if (!old_config.bss || !old_config.bss[0])
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return false;
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let iface = hostapd.interfaces[phy];
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if (!iface) {
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hostapd.printf(`Could not find previous interface ${iface_name}`);
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return false;
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}
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let iface_name = old_config.bss[0].ifname;
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let first_bss = hostapd.bss[iface_name];
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if (!first_bss) {
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hostapd.printf(`Could not find bss of previous interface ${iface_name}`);
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return false;
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}
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let macaddr_list = iface_config_macaddr_list(config);
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let bss_list = [];
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let bss_list_cfg = [];
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let prev_bss_hash = [];
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for (let bss in old_config.bss) {
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let hash = bss_config_hash(bss.data);
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push(prev_bss_hash, bss_config_hash(bss.data));
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}
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// Step 1: find (possibly renamed) interfaces with the same config
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// and store them in the new order (with gaps)
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for (let i = 0; i < length(config.bss); i++) {
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let prev;
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// For fullmac devices, the first interface needs to be preserved,
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// since it's treated as the master
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if (!i && phy_is_fullmac(phy)) {
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prev = 0;
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prev_bss_hash[0] = null;
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} else {
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prev = bss_find_existing(config.bss[i], old_config, prev_bss_hash);
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}
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if (prev < 0)
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continue;
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let cur_config = config.bss[i];
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let prev_config = old_config.bss[prev];
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let prev_bss = get_config_bss(old_config, prev);
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if (!prev_bss)
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return false;
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// try to preserve MAC address of this BSS by reassigning another
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// BSS if necessary
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if (cur_config.default_macaddr &&
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!macaddr_list[prev_config.bssid]) {
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macaddr_list[prev_config.bssid] = i;
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cur_config.bssid = prev_config.bssid;
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}
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bss_list[i] = prev_bss;
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bss_list_cfg[i] = old_config.bss[prev];
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}
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if (config.mbssid && !bss_list_cfg[0]) {
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hostapd.printf("First BSS changed with MBSSID enabled");
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return false;
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}
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// Step 2: if none were found, rename and preserve the first one
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if (length(bss_list) == 0) {
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// can't change the bssid of the first bss
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if (config.bss[0].bssid != old_config.bss[0].bssid) {
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if (!config.bss[0].default_macaddr) {
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hostapd.printf(`BSSID of first interface changed: ${lc(old_config.bss[0].bssid)} -> ${lc(config.bss[0].bssid)}`);
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return false;
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}
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config.bss[0].bssid = old_config.bss[0].bssid;
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}
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let prev_bss = get_config_bss(old_config, 0);
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if (!prev_bss)
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return false;
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macaddr_list[config.bss[0].bssid] = 0;
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bss_list[0] = prev_bss;
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bss_list_cfg[0] = old_config.bss[0];
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prev_bss_hash[0] = null;
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}
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// Step 3: delete all unused old interfaces
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for (let i = 0; i < length(prev_bss_hash); i++) {
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if (!prev_bss_hash[i])
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continue;
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let prev_bss = get_config_bss(old_config, i);
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if (!prev_bss)
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return false;
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let ifname = old_config.bss[i].ifname;
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hostapd.printf(`Remove bss '${ifname}' on phy '${phy}'`);
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prev_bss.delete();
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wdev_remove(ifname);
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}
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// Step 4: rename preserved interfaces, use temporary name on duplicates
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let rename_list = [];
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for (let i = 0; i < length(bss_list); i++) {
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if (!bss_list[i])
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continue;
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let old_ifname = bss_list_cfg[i].ifname;
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let new_ifname = config.bss[i].ifname;
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if (old_ifname == new_ifname)
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continue;
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if (hostapd.bss[new_ifname]) {
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new_ifname = "tmp_" + substr(hostapd.sha1(new_ifname), 0, 8);
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push(rename_list, i);
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}
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hostapd.printf(`Rename bss ${old_ifname} to ${new_ifname}`);
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if (!bss_list[i].rename(new_ifname)) {
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hostapd.printf(`Failed to rename bss ${old_ifname} to ${new_ifname}`);
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return false;
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}
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bss_list_cfg[i].ifname = new_ifname;
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}
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// Step 5: rename interfaces with temporary names
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for (let i in rename_list) {
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let new_ifname = config.bss[i].ifname;
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if (!bss_list[i].rename(new_ifname)) {
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hostapd.printf(`Failed to rename bss to ${new_ifname}`);
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return false;
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}
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bss_list_cfg[i].ifname = new_ifname;
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}
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// Step 6: assign BSSID for newly created interfaces
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let macaddr_data = {
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num_global: config.num_global_macaddr ?? 1,
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mbssid: config.mbssid ?? 0,
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};
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macaddr_list = phydev.macaddr_init(macaddr_list, macaddr_data);
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for (let i = 0; i < length(config.bss); i++) {
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if (bss_list[i])
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continue;
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let bsscfg = config.bss[i];
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let mac_idx = macaddr_list[bsscfg.bssid];
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if (mac_idx < 0)
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macaddr_list[bsscfg.bssid] = i;
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if (mac_idx == i)
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continue;
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// statically assigned bssid of the new interface is in conflict
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// with the bssid of a reused interface. reassign the reused interface
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if (!bsscfg.default_macaddr) {
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// can't update bssid of the first BSS, need to restart
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if (!mac_idx < 0)
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return false;
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bsscfg = config.bss[mac_idx];
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}
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let addr = phydev.macaddr_next(i);
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if (!addr) {
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hostapd.printf(`Failed to generate mac address for phy ${phy}`);
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return false;
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}
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bsscfg.bssid = addr;
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}
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let config_inline = iface_gen_config(phy, config);
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// Step 7: fill in the gaps with new interfaces
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for (let i = 0; i < length(config.bss); i++) {
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let ifname = config.bss[i].ifname;
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let bss = bss_list[i];
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if (bss)
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continue;
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hostapd.printf(`Add bss ${ifname} on phy ${phy}`);
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bss_list[i] = iface.add_bss(config_inline, i);
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if (!bss_list[i]) {
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hostapd.printf(`Failed to add new bss ${ifname} on phy ${phy}`);
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return false;
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}
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}
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// Step 8: update interface bss order
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if (!iface.set_bss_order(bss_list)) {
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hostapd.printf(`Failed to update BSS order on phy '${phy}'`);
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return false;
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}
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// Step 9: update config
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for (let i = 0; i < length(config.bss); i++) {
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if (!bss_list_cfg[i])
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continue;
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let ifname = config.bss[i].ifname;
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let bss = bss_list[i];
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if (is_equal(config.bss[i], bss_list_cfg[i]))
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continue;
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if (is_equal(bss_remove_file_fields(config.bss[i]),
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bss_remove_file_fields(bss_list_cfg[i]))) {
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hostapd.printf(`Update config data files for bss ${ifname}`);
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if (bss.set_config(config_inline, i, true) < 0) {
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hostapd.printf(`Could not update config data files for bss ${ifname}`);
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return false;
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} else {
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bss.ctrl("RELOAD_WPA_PSK");
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continue;
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}
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}
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bss_reload_psk(bss, config.bss[i], bss_list_cfg[i]);
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if (is_equal(config.bss[i], bss_list_cfg[i]))
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continue;
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hostapd.printf(`Reload config for bss '${config.bss[0].ifname}' on phy '${phy}'`);
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if (bss.set_config(config_inline, i) < 0) {
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hostapd.printf(`Failed to set config for bss ${ifname}`);
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return false;
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}
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}
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return true;
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}
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function iface_update_supplicant_macaddr(phy, config)
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{
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let macaddr_list = [];
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for (let i = 0; i < length(config.bss); i++)
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push(macaddr_list, config.bss[i].bssid);
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ubus.call("wpa_supplicant", "phy_set_macaddr_list", { phy: phy, macaddr: macaddr_list });
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|
}
|
|
|
|
function iface_set_config(phy, config)
|
|
{
|
|
let old_config = hostapd.data.config[phy];
|
|
|
|
hostapd.data.config[phy] = config;
|
|
|
|
if (!config) {
|
|
hostapd.remove_iface(phy);
|
|
return iface_remove(old_config);
|
|
}
|
|
|
|
let phydev = phy_open(phy);
|
|
if (!phydev) {
|
|
hostapd.printf(`Failed to open phy ${phy}`);
|
|
return false;
|
|
}
|
|
|
|
try {
|
|
let ret = iface_reload_config(phydev, config, old_config);
|
|
if (ret) {
|
|
iface_update_supplicant_macaddr(phy, config);
|
|
hostapd.printf(`Reloaded settings for phy ${phy}`);
|
|
return 0;
|
|
}
|
|
} catch (e) {
|
|
hostapd.printf(`Error reloading config: ${e}\n${e.stacktrace[0].context}`);
|
|
}
|
|
|
|
hostapd.printf(`Restart interface for phy ${phy}`);
|
|
let ret = iface_restart(phydev, config, old_config);
|
|
iface_update_supplicant_macaddr(phy, config);
|
|
|
|
return ret;
|
|
}
|
|
|
|
function config_add_bss(config, name)
|
|
{
|
|
let bss = {
|
|
ifname: name,
|
|
data: [],
|
|
hash: {}
|
|
};
|
|
|
|
push(config.bss, bss);
|
|
|
|
return bss;
|
|
}
|
|
|
|
function iface_load_config(filename)
|
|
{
|
|
let f = open(filename, "r");
|
|
if (!f)
|
|
return null;
|
|
|
|
let config = {
|
|
radio: {
|
|
data: []
|
|
},
|
|
bss: [],
|
|
orig_file: filename,
|
|
};
|
|
|
|
let bss;
|
|
let line;
|
|
while ((line = trim(f.read("line"))) != null) {
|
|
let val = split(line, "=", 2);
|
|
if (!val[0])
|
|
continue;
|
|
|
|
if (val[0] == "interface") {
|
|
bss = config_add_bss(config, val[1]);
|
|
break;
|
|
}
|
|
|
|
if (val[0] == "channel") {
|
|
config.radio.channel = val[1];
|
|
continue;
|
|
}
|
|
|
|
if (val[0] == "#num_global_macaddr" ||
|
|
val[0] == "mbssid")
|
|
config[val[0]] = int(val[1]);
|
|
|
|
push(config.radio.data, line);
|
|
}
|
|
|
|
while ((line = trim(f.read("line"))) != null) {
|
|
if (line == "#default_macaddr")
|
|
bss.default_macaddr = true;
|
|
|
|
let val = split(line, "=", 2);
|
|
if (!val[0])
|
|
continue;
|
|
|
|
if (val[0] == "bssid") {
|
|
bss.bssid = lc(val[1]);
|
|
continue;
|
|
}
|
|
|
|
if (val[0] == "nas_identifier")
|
|
bss.nasid = val[1];
|
|
|
|
if (val[0] == "bss") {
|
|
bss = config_add_bss(config, val[1]);
|
|
continue;
|
|
}
|
|
|
|
if (hostapd.data.file_fields[val[0]])
|
|
bss.hash[val[0]] = hostapd.sha1(readfile(val[1]));
|
|
|
|
push(bss.data, line);
|
|
}
|
|
f.close();
|
|
|
|
return config;
|
|
}
|
|
|
|
function ex_wrap(func) {
|
|
return (req) => {
|
|
try {
|
|
let ret = func(req);
|
|
return ret;
|
|
} catch(e) {
|
|
hostapd.printf(`Exception in ubus function: ${e}\n${e.stacktrace[0].context}`);
|
|
}
|
|
return libubus.STATUS_UNKNOWN_ERROR;
|
|
};
|
|
}
|
|
|
|
let main_obj = {
|
|
reload: {
|
|
args: {
|
|
phy: "",
|
|
},
|
|
call: ex_wrap(function(req) {
|
|
let phy_list = req.args.phy ? [ req.args.phy ] : keys(hostapd.data.config);
|
|
for (let phy_name in phy_list) {
|
|
let phy = hostapd.data.config[phy_name];
|
|
let config = iface_load_config(phy.orig_file);
|
|
iface_set_config(phy_name, config);
|
|
}
|
|
|
|
return 0;
|
|
})
|
|
},
|
|
apsta_state: {
|
|
args: {
|
|
phy: "",
|
|
up: true,
|
|
frequency: 0,
|
|
sec_chan_offset: 0,
|
|
csa: true,
|
|
csa_count: 0,
|
|
},
|
|
call: ex_wrap(function(req) {
|
|
if (req.args.up == null || !req.args.phy)
|
|
return libubus.STATUS_INVALID_ARGUMENT;
|
|
|
|
let phy = req.args.phy;
|
|
let config = hostapd.data.config[phy];
|
|
if (!config || !config.bss || !config.bss[0] || !config.bss[0].ifname)
|
|
return 0;
|
|
|
|
let iface = hostapd.interfaces[phy];
|
|
if (!iface)
|
|
return 0;
|
|
|
|
if (!req.args.up) {
|
|
iface.stop();
|
|
return 0;
|
|
}
|
|
|
|
if (!req.args.frequency)
|
|
return libubus.STATUS_INVALID_ARGUMENT;
|
|
|
|
let freq_info = iface_freq_info(iface, config, req.args);
|
|
if (!freq_info)
|
|
return libubus.STATUS_UNKNOWN_ERROR;
|
|
|
|
let ret;
|
|
if (req.args.csa) {
|
|
freq_info.csa_count = req.args.csa_count ?? 10;
|
|
ret = iface.switch_channel(freq_info);
|
|
} else {
|
|
ret = iface.start(freq_info);
|
|
}
|
|
if (!ret)
|
|
return libubus.STATUS_UNKNOWN_ERROR;
|
|
|
|
return 0;
|
|
})
|
|
},
|
|
config_get_macaddr_list: {
|
|
args: {
|
|
phy: ""
|
|
},
|
|
call: ex_wrap(function(req) {
|
|
let phy = req.args.phy;
|
|
if (!phy)
|
|
return libubus.STATUS_INVALID_ARGUMENT;
|
|
|
|
let ret = {
|
|
macaddr: [],
|
|
};
|
|
|
|
let config = hostapd.data.config[phy];
|
|
if (!config)
|
|
return ret;
|
|
|
|
ret.macaddr = map(config.bss, (bss) => bss.bssid);
|
|
return ret;
|
|
})
|
|
},
|
|
config_set: {
|
|
args: {
|
|
phy: "",
|
|
config: "",
|
|
prev_config: "",
|
|
},
|
|
call: ex_wrap(function(req) {
|
|
let phy = req.args.phy;
|
|
let file = req.args.config;
|
|
let prev_file = req.args.prev_config;
|
|
|
|
if (!phy)
|
|
return libubus.STATUS_INVALID_ARGUMENT;
|
|
|
|
if (prev_file && !hostapd.data.config[phy]) {
|
|
let config = iface_load_config(prev_file);
|
|
if (config)
|
|
config.radio.data = [];
|
|
hostapd.data.config[phy] = config;
|
|
}
|
|
|
|
let config = iface_load_config(file);
|
|
|
|
hostapd.printf(`Set new config for phy ${phy}: ${file}`);
|
|
iface_set_config(phy, config);
|
|
|
|
return {
|
|
pid: hostapd.getpid()
|
|
};
|
|
})
|
|
},
|
|
config_add: {
|
|
args: {
|
|
iface: "",
|
|
config: "",
|
|
},
|
|
call: ex_wrap(function(req) {
|
|
if (!req.args.iface || !req.args.config)
|
|
return libubus.STATUS_INVALID_ARGUMENT;
|
|
|
|
if (hostapd.add_iface(`bss_config=${req.args.iface}:${req.args.config}`) < 0)
|
|
return libubus.STATUS_INVALID_ARGUMENT;
|
|
|
|
return {
|
|
pid: hostapd.getpid()
|
|
};
|
|
})
|
|
},
|
|
config_remove: {
|
|
args: {
|
|
iface: ""
|
|
},
|
|
call: ex_wrap(function(req) {
|
|
if (!req.args.iface)
|
|
return libubus.STATUS_INVALID_ARGUMENT;
|
|
|
|
hostapd.remove_iface(req.args.iface);
|
|
return 0;
|
|
})
|
|
},
|
|
};
|
|
|
|
hostapd.data.ubus = ubus;
|
|
hostapd.data.obj = ubus.publish("hostapd", main_obj);
|
|
|
|
function bss_event(type, name, data) {
|
|
let ubus = hostapd.data.ubus;
|
|
|
|
data ??= {};
|
|
data.name = name;
|
|
hostapd.data.obj.notify(`bss.${type}`, data, null, null, null, -1);
|
|
ubus.call("service", "event", { type: `hostapd.${name}.${type}`, data: {} });
|
|
}
|
|
|
|
return {
|
|
shutdown: function() {
|
|
for (let phy in hostapd.data.config)
|
|
iface_set_config(phy, null);
|
|
hostapd.ubus.disconnect();
|
|
},
|
|
bss_add: function(name, obj) {
|
|
bss_event("add", name);
|
|
},
|
|
bss_reload: function(name, obj, reconf) {
|
|
bss_event("reload", name, { reconf: reconf != 0 });
|
|
},
|
|
bss_remove: function(name, obj) {
|
|
bss_event("remove", name);
|
|
}
|
|
};
|