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Code Issues Releases Wiki Activity

remove overly defensive suggestions from copilot

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This commit is contained in:
J. Nick Koston
2025-11-06 16:04:00 -06:00
parent 541e0cfde8
commit 7d48df9fe1
3 changed files with 13 additions and 11 deletions
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8
esphome/components/wifi/__init__.py
View File

@@ -54,6 +54,10 @@ AUTO_LOAD = ["network"]
NO_WIFI_VARIANTS = [const.VARIANT_ESP32H2, const.VARIANT_ESP32P4]
CONF_SAVE = "save"
# Maximum number of WiFi networks that can be configured
# Limited to 127 because selected_sta_index_ is int8_t in C++
MAX_WIFI_NETWORKS = 127
wifi_ns = cg.esphome_ns.namespace("wifi")
EAPAuth = wifi_ns.struct("EAPAuth")
ManualIP = wifi_ns.struct("ManualIP")
@@ -260,7 +264,9 @@ CONFIG_SCHEMA = cv.All(
cv.Schema(
{
cv.GenerateID(): cv.declare_id(WiFiComponent),
cv.Optional(CONF_NETWORKS): cv.ensure_list(WIFI_NETWORK_STA),
cv.Optional(CONF_NETWORKS): cv.All(
cv.ensure_list(WIFI_NETWORK_STA), cv.Length(max=MAX_WIFI_NETWORKS)
),
cv.Optional(CONF_SSID): cv.ssid,
cv.Optional(CONF_PASSWORD): validate_password,
cv.Optional(CONF_MANUAL_IP): STA_MANUAL_IP_SCHEMA,

14
esphome/components/wifi/wifi_component.cpp
View File

@@ -406,10 +406,8 @@ bool WiFiComponent::sync_selected_sta_to_best_scan_result_() {
for (size_t i = 0; i < this->sta_.size(); i++) {
if (scan_res.matches(this->sta_[i])) {
if (i > std::numeric_limits<int8_t>::max()) {
ESP_LOGE(TAG, "AP index %zu too large", i);
return false;
}
// Safe cast: sta_.size() limited to MAX_WIFI_NETWORKS (127) in __init__.py validation
// No overflow check needed - YAML validation prevents >127 networks
this->selected_sta_index_ = static_cast<int8_t>(i); // Links scan_result_[0] with sta_[i]
return true;
}
@@ -832,15 +830,13 @@ void WiFiComponent::retry_connect() {
if (!this->is_captive_portal_active_() && !this->is_esp32_improv_active_() &&
(this->num_retried_ > 3 || this->error_from_callback_)) {
#ifdef USE_WIFI_FAST_CONNECT
if (this->sta_.empty()) {
// No configured networks - shouldn't happen in fast_connect mode, but handle defensively
ESP_LOGW(TAG, "No configured networks");
this->restart_adapter();
} else if (this->trying_loaded_ap_) {
// No empty check needed - YAML validation requires at least one network for fast_connect
if (this->trying_loaded_ap_) {
this->trying_loaded_ap_ = false;
this->selected_sta_index_ = 0; // Retry from the first configured AP
this->reset_for_next_ap_attempt_();
} else if (this->selected_sta_index_ >= static_cast<int8_t>(this->sta_.size()) - 1) {
// Safe cast: sta_.size() limited to MAX_WIFI_NETWORKS (127) in __init__.py validation
// Exhausted all configured APs, restart adapter and cycle back to first
// Restart clears any stuck WiFi driver state
// Each AP is tried with config data only (SSID + optional BSSID/channel if user configured them)

2
esphome/components/wifi/wifi_component.h
View File

@@ -463,7 +463,7 @@ class WiFiComponent : public Component {
uint8_t num_retried_{0};
// Index into sta_ array for the currently selected AP configuration (-1 = none selected)
// Used to access password, manual_ip, priority, EAP settings, and hidden flag
// int8_t limits to 127 APs which should be sufficient for all practical use cases
// int8_t limits to 127 APs (enforced in __init__.py via MAX_WIFI_NETWORKS)
int8_t selected_sta_index_{-1};
#if USE_NETWORK_IPV6
uint8_t num_ipv6_addresses_{0};