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#include "mdns_service.h"
#include <stdio.h>
#include <string.h>
#include "esp_check.h"
#include "esp_log.h"
#include "mdns.h"
#include "viewport_state.h"
static const char *TAG = "mdns";
static const char *SERVICE = "_scrypted-viewport";
static const char *PROTO = "_tcp";
static const uint16_t PORT = 80;
// Pull hostname + TXT values from viewport_state under one lock acquisition,
// then push them at the mDNS service. mdns_service_add() rejects with
// INVALID_ARG if the hostname isn't set, so order matters on first apply.
// viewport_name is always populated (MAC-derived default) so the hostname
// is always `viewport-<name>`.
static esp_err_t apply_state(bool include_hostname)
{
char hostname[80];
char name[64];
char mac[18];
const char *resolution, *orientation;
viewport_state_lock();
viewport_state_t *st = viewport_state_get();
snprintf(hostname, sizeof(hostname), "viewport-%s", st->viewport_name);
snprintf(name, sizeof(name), "%s", st->viewport_name);
snprintf(mac, sizeof(mac), "%s", st->mac_str);
resolution = viewport_state_resolution_str();
orientation = (st->orientation == VIEWPORT_ORIENTATION_PORTRAIT)
? "portrait" : "landscape";
viewport_state_unlock();
if (include_hostname) {
ESP_RETURN_ON_ERROR(mdns_hostname_set(hostname), TAG, "hostname_set");
}
mdns_txt_item_t txt[] = {
{ "version", VIEWPORT_VERSION },
{ "resolution", resolution },
{ "orientation", orientation },
{ "name", name },
// Stable identity for the Scrypted plugin's discovery/auto-heal:
// names are user-editable, the MAC is not.
{ "mac", mac },
};
return mdns_service_txt_set(SERVICE, PROTO, txt,
sizeof(txt) / sizeof(txt[0]));
}
esp_err_t mdns_service_start(void)
{
char hostname[80];
viewport_state_lock();
viewport_state_t *st = viewport_state_get();
snprintf(hostname, sizeof(hostname), "viewport-%s", st->viewport_name);
viewport_state_unlock();
ESP_RETURN_ON_ERROR(mdns_init(), TAG, "mdns_init");
ESP_RETURN_ON_ERROR(mdns_hostname_set(hostname), TAG, "hostname_set");
ESP_RETURN_ON_ERROR(
mdns_service_add(NULL, SERVICE, PROTO, PORT, NULL, 0),
TAG, "service_add");
ESP_RETURN_ON_ERROR(apply_state(false), TAG, "txt_set");
ESP_LOGI(TAG, "mDNS up — %s.local advertising %s.%s.local on :%u",
hostname, SERVICE, PROTO, PORT);
return ESP_OK;
}
esp_err_t mdns_service_refresh(void)
{
return apply_state(true);
}
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