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137 lines
4.4 KiB
137 lines
4.4 KiB
/*
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MDNS MODULE
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Copyright (C) 2017-2019 by Xose Pérez <xose dot perez at gmail dot com>
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*/
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// -----------------------------------------------------------------------------
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// mDNS Server
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// -----------------------------------------------------------------------------
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#include "espurna.h"
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#if MDNS_SERVER_SUPPORT
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#include "mdns.h"
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#include "telnet.h"
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#include "utils.h"
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#include "web.h"
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#include <ESP8266mDNS.h>
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// -----------------------------------------------------------------------------
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namespace mdns {
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namespace {
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void addServices() {
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#if WEB_SUPPORT
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MDNS.addService("http", "tcp", webPort());
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#endif
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#if TELNET_SUPPORT
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MDNS.addService("telnet", "tcp", telnetPort());
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#endif
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#if OTA_ARDUINOOTA_SUPPORT
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// MDNS implementation has its weird way of accessing strings;
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// can't pass `String`s directly and must use a char pointer
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// to RAM so it could copy it for internal use via `strcpy`
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// Since all we use here is build data exposed with `StringView`s,
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// force everything in RAM first to avoid a runtime exception.
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if (MDNS.enableArduino(OTA_PORT, systemPassword().length() > 0)) {
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const auto app = buildApp();
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MDNS.addServiceTxt("arduino", "tcp",
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"app_name", String(app.name).c_str());
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MDNS.addServiceTxt("arduino", "tcp",
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"app_version", String(app.version).c_str());
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MDNS.addServiceTxt("arduino", "tcp",
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"build_date", String(app.build_time).c_str());
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MDNS.addServiceTxt("arduino", "tcp",
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"mac", String(systemChipId()).c_str());
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MDNS.addServiceTxt("arduino", "tcp",
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"target_board", String(systemDevice()).c_str());
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MDNS.addServiceTxt("arduino", "tcp", "mem_size",
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String(static_cast<int>(ESP.getFlashChipRealSize() / 1024), 10));
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MDNS.addServiceTxt("arduino", "tcp", "sdk_size",
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String(static_cast<int>(ESP.getFlashChipSize() / 1024), 10));
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MDNS.addServiceTxt("arduino", "tcp", "free_space",
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String(static_cast<int>(ESP.getFreeSketchSpace() / 1024), 10));
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}
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#endif
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}
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void start() {
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const auto hostname = systemHostname();
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if (MDNS.begin(hostname)) {
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DEBUG_MSG_P(PSTR("[MDNS] Started with hostname %s\n"), hostname.c_str());
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addServices();
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espurnaRegisterLoop([]() {
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MDNS.update();
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});
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return;
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}
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DEBUG_MSG_P(PSTR("[MDNS] ERROR\n"));
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}
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} // namespace
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} // namespace mdsn
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// As of right now, this needs to be request -> response operation in the same block,
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// so we don't end up using someone else's query results.
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// `queryService()` 3rd arg is timeout, by default it blocks for MDNS_QUERYSERVICES_WAIT_TIME (1000)
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// TODO: esp8266 allows async pyzeroconf-like API to have this running independently.
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// In case something other than MQTT needs this, consider extending the API
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// (and notice that RTOS SDK alternative would need to use mdns_query_* ESP-IDF API)
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// TODO: both implementations also have separate queries for A and AAAA records :/
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bool mdnsServiceQuery(const String& service, const String& protocol, MdnsServerQueryCallback callback) {
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bool result { false };
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auto found = MDNS.queryService(service, protocol);
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for (decltype(found) n = 0; n < found; ++n) {
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if (callback(MDNS.IP(n).toString(), MDNS.port(n))) {
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result = true;
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break;
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}
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}
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MDNS.removeQuery();
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return result;
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}
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bool mdnsRunning() {
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return MDNS.isRunning();
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}
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void mdnsServerSetup() {
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// 2.7.x and older require MDNS.begin() when interface is UP
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// issue tracker suggest doing begin() for each mode change, but...
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// this does seem to imply pairing it with end() (aka close()),
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// which will completely reset the MDNS object and require a setup once again.
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// this does not seem to work reliably :/ only support STA for the time being
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// 3.0.0 and newer only need to do MDNS.begin() once at setup()
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// however, note that without begin() call it will immediatly crash b/c
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// there are no sanity checks if it was actually called
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#if defined(ARDUINO_ESP8266_RELEASE_2_7_2) \
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|| defined(ARDUINO_ESP8266_RELEASE_2_7_3) \
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|| defined(ARDUINO_ESP8266_RELEASE_2_7_4)
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wifiRegister([](espurna::wifi::Event event) {
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if ((event == espurna::wifi::Event::StationConnected) && !MDNS.isRunning()) {
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mdns::start();
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}
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});
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#else
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mdns::start();
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#endif
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}
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#endif // MDNS_SERVER_SUPPORT
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