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Berry add `mdns` advanced features and query (#17842)
* Berry add ``mdns`` advanced features and query * typo
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s-hadinger
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@ -9,6 +9,7 @@ All notable changes to this project will be documented in this file.
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- ESP32 command ``EnergyCols 1..8`` to change number of GUI columns
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- ESP32 command ``EnergyDisplay 1..3`` to change GUI column presentation
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- support for SEN5X gas and air quality sensor by Tyeth Gundry (#17736)
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- Berry add ``mdns`` advanced features and query
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### Breaking Changed
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- Berry energy_ctypes changed with new energy driver
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@ -12,6 +12,7 @@
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#ifdef USE_DISCOVERY
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#include "mdns.h"
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#include <string.h>
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#include "IPAddress.h"
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//
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// `mdsn.start([hostname:string]) -> nil`
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@ -52,7 +53,7 @@ static void m_mdns_set_hostname(struct bvm *vm, const char * hostname) {
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BE_FUNC_CTYPE_DECLARE(m_mdns_set_hostname, "", "@s")
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//
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// `mdns.add_service(service:string, proto:string, port:int, txt:map) -> nil`
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// `mdns.add_service(service:string, proto:string, port:int, txt:map [, instance:string, hostname:string]) -> nil`
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//
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// add a service declaration using the current hostname as instance name, and specify TXT fields as a `map`
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//
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@ -66,6 +67,14 @@ static int32_t m_mdns_add_service(struct bvm *vm) {
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const char* service_type = be_tostring(vm, 1);
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const char* proto = be_tostring(vm, 2);
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uint16_t port = be_toint(vm, 3);
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const char * instance = nullptr;
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const char * hostname = nullptr;
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if (top >= 5 && be_isstring(vm, 5)) {
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instance = be_tostring(vm, 5);
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}
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if (top >= 6 && be_isstring(vm, 6)) {
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hostname = be_tostring(vm, 6);
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}
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mdns_txt_item_t * txt_items = NULL;
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int32_t txt_num = 0;
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@ -98,7 +107,12 @@ static int32_t m_mdns_add_service(struct bvm *vm) {
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be_pop(vm, 1); /* pop iterator */
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}
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}
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esp_err_t err = mdns_service_add(NULL, service_type, proto, port, txt_items, txt_num);
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esp_err_t err;
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if (hostname == nullptr) {
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err = mdns_service_add(instance, service_type, proto, port, txt_items, txt_num);
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} else {
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err = mdns_service_add_for_host(instance, service_type, proto, hostname, port, txt_items, txt_num);
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}
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// free all allocated memory
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if (txt_items != NULL) {
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for (uint32_t i = 0; i < txt_num; i++) {
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@ -115,12 +129,189 @@ static int32_t m_mdns_add_service(struct bvm *vm) {
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be_raise(vm, "value_error", "wrong or missing arguments");
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}
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// `mdns_service_subtype_add_for_host()` is only available in most recent esp-protocols version
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//
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// This alias makes sure that the compilation succeeds even if the function is not available
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//
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extern "C" esp_err_t __tasmota_mdns_service_subtype_add_for_host (const char *instance_name, const char *service_type, const char *proto, const char *hostname, const char *subtype)
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{ return ESP_OK; }
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extern "C" esp_err_t mdns_service_subtype_add_for_host(const char *instance_name, const char *service_type, const char *proto, const char *hostname, const char *subtype) __attribute__ ((weak, alias ("__tasmota_mdns_service_subtype_add_for_host")));
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//
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// `mdns.add_subtype(service:string, proto:string, instance:string, hostname:string, subtype:string) -> nil`
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//
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// add a subtype
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//
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static int32_t m_dns_add_subtype(struct bvm *vm) {
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int32_t top = be_top(vm);
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if (top >= 5 && be_isstring(vm, 1) && be_isstring(vm, 2) && be_isstring(vm, 3) && be_isstring(vm, 4) && be_isstring(vm, 5)) {
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const char* service_type = be_tostring(vm, 1);
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const char* proto = be_tostring(vm, 2);
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const char* instance = be_tostring(vm, 3);
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const char* hostname = be_tostring(vm, 4);
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const char* subtype = be_tostring(vm, 5);
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esp_err_t err;
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// Waiting for support of `mdns_service_subtype_add_for_host()`
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err = mdns_service_subtype_add_for_host(instance, service_type, proto, hostname, subtype);
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if (err != ESP_OK) {
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be_raisef(vm, "internal_error", "mdns add_subtype err=%i", err);
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}
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be_return_nil(vm);
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}
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be_raise(vm, "value_error", "wrong or missing arguments");
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}
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//
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// `mdns.add_hostname(hostname:string, ip:string [, ip:string]*) -> nil`
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//
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// add a delegate hostname
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//
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static int32_t m_dns_add_hostname(struct bvm *vm) {
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int32_t top = be_top(vm);
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if (top >= 2 && be_isstring(vm, 1) && be_isstring(vm, 2)) {
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mdns_ip_addr_t * head = nullptr; // head of the linked list of addresses
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esp_err_t err = ESP_OK; // return status
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const char* hostname = be_tostring(vm, 1);
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const char* ip_text = nullptr;
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ip_addr_t a;
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for (uint16_t i = 2; i <= top; i++) {
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const char* ip_text = be_tostring(vm, i);
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if (ip_text == nullptr || ip_text[0] == 0) { continue; } // ignore empty string
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IPAddress ip;
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if (!ip.fromString(ip_text)) { err = -1; break; }
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// allocate new slot
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mdns_ip_addr_t *new_head = (mdns_ip_addr_t*) be_os_malloc(sizeof(mdns_ip_addr_t));
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if (new_head == nullptr) { err = -2; break; }
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new_head->next = head;
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head = new_head;
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//
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ip_addr_t *ip_addr = (ip_addr_t*) ip;
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head->addr.type = ip_addr->type;
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if (ip_addr->type == ESP_IPADDR_TYPE_V6) {
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memcpy(head->addr.u_addr.ip6.addr, ip_addr->u_addr.ip6.addr, 16);
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} else {
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head->addr.u_addr.ip4.addr = ip_addr->u_addr.ip4.addr;
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}
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} while (0);
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if (err == ESP_OK && head != nullptr) {
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err = mdns_delegate_hostname_add(hostname, head);
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}
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// deallocate all memory
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while (head != nullptr) {
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mdns_ip_addr_t * next = head->next;
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be_os_free(head);
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head = next;
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}
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if (err == -1) {
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be_raisef(vm, "value_error", "Invalid IP Address '%s'", ip_text);
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} else if (err == -2) {
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be_raise(vm, "memory_error", nullptr);
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} else if (err != ESP_OK) {
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be_raisef(vm, "value_error", "mdns_delegate_hostname_add err=%i", err);
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}
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be_return_nil(vm);
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}
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be_raise(vm, "value_error", "wrong or missing arguments");
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}
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//
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// `mdns.find_service(service:string, proto:string [timeout_ms:int(3000), max_responses:int(20)]) -> map`
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//
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static int32_t m_dns_find_service(struct bvm *vm) {
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static const char * ip_protocol_str[] = {"v4", "v6", "max"};
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int32_t top = be_top(vm);
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if (top >= 2 && be_isstring(vm, 1) && be_isstring(vm, 2)) {
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const char* service_name = be_tostring(vm, 1);
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const char* proto = be_tostring(vm, 2);
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int32_t timeout_ms = 3000;
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if (top >= 3 && be_isint(vm, 3)) {
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timeout_ms = be_toint(vm, 3);
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}
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int32_t max_responses = 20;
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if (top >= 4 && be_isint(vm, 4)) {
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max_responses = be_toint(vm, 4);
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}
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mdns_result_t * results = NULL;
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esp_err_t err = mdns_query_ptr(service_name, proto, timeout_ms, max_responses, &results);
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if (err != ESP_OK) { be_raisef(vm, "value_error", "mdns_query_ptr err=%i", err); }
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if (results == NULL) { be_return_nil(vm); }
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mdns_result_t * r = results;
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mdns_ip_addr_t * a = NULL;
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be_newobject(vm, "list");
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while (r) {
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be_newobject(vm, "map");
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be_map_insert_str(vm, "type", ip_protocol_str[r->ip_protocol]);
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if (r->instance_name) { be_map_insert_str(vm, "instance", r->instance_name); }
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if (r->hostname) { be_map_insert_str(vm, "hostname", r->hostname); }
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// TXT
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be_pushstring(vm, "txt");
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be_newobject(vm, "map");
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for (int32_t t=0; t < r->txt_count; t++){
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be_map_insert_str(vm, r->txt[t].key, r->txt[t].value);
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}
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//
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be_pop(vm, 1);
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be_data_insert(vm, -3);
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be_pop(vm, 2);
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//
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// IP addresses
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be_pushstring(vm, "ip");
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be_newobject(vm, "list");
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//
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for (a = r->addr; a != NULL; a = a->next) {
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ip_addr_t ip_addr;
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if (a->addr.type == IPADDR_TYPE_V6) {
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ip_addr_copy_from_ip6(ip_addr, a->addr.u_addr.ip6);
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} else if (a->addr.type == IPADDR_TYPE_V4) {
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ip_addr_copy_from_ip4(ip_addr, a->addr.u_addr.ip4);
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} else {
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continue;
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}
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be_pushstring(vm, IPAddress(ip_addr).toString().c_str());
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be_data_push(vm, -2);
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be_pop(vm, 1);
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}
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//
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be_pop(vm, 1);
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be_data_insert(vm, -3);
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be_pop(vm, 2);
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be_pop(vm, 1);
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be_data_push(vm, -2);
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be_pop(vm, 1);
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r = r->next;
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}
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be_pop(vm, 1); // now list is on top
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mdns_query_results_free(results);
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be_return(vm);
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}
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be_raise(vm, "value_error", "wrong or missing arguments");
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}
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/* @const_object_info_begin
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module mdns (scope: global) {
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start, ctype_func(m_mdns_start)
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stop, ctype_func(m_mdns_stop)
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set_hostname, ctype_func(m_mdns_set_hostname)
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add_service, func(m_mdns_add_service)
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add_hostname, func(m_dns_add_hostname)
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add_subtype, func(m_dns_add_subtype)
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// querying
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find_service, func(m_dns_find_service)
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}
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@const_object_info_end */
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#include "be_fixed_mdns.h"
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