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Code Issues Releases Wiki Activity

goodbye strdup

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This commit is contained in:
J. Nick Koston
2025-10-07 21:39:04 -10:00
parent 6c0a0334a8
commit 328c1a8469
1 changed files with 2 additions and 8 deletions
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10
esphome/components/mdns/mdns_esp32.cpp
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@@ -2,7 +2,6 @@
#if defined(USE_ESP32) && defined(USE_MDNS)
#include <mdns.h>
#include <cstring>
#include "esphome/core/hal.h"
#include "esphome/core/log.h"
#include "mdns_component.h"
@@ -30,20 +29,15 @@ void MDNSComponent::setup() {
for (const auto &record : service.txt_records) {
mdns_txt_item_t it{};
// key and value are either compile-time string literals in flash or pointers to dynamic_txt_values_
// ESP-IDF requires strdup for both to keep them alive during mdns operation
// Both remain valid for the lifetime of this function, and ESP-IDF makes internal copies
it.key = MDNS_STR_ARG(record.key);
it.value = strdup(MDNS_STR_ARG(record.value));
it.value = MDNS_STR_ARG(record.value);
txt_records.push_back(it);
}
uint16_t port = const_cast<TemplatableValue<uint16_t> &>(service.port).value();
err = mdns_service_add(nullptr, MDNS_STR_ARG(service.service_type), MDNS_STR_ARG(service.proto), port,
txt_records.data(), txt_records.size());
// free records
for (const auto &it : txt_records) {
free((void *) it.value); // NOLINT(cppcoreguidelines-no-malloc)
}
if (err != ESP_OK) {
ESP_LOGW(TAG, "Failed to register service %s: %s", MDNS_STR_ARG(service.service_type), esp_err_to_name(err));
}