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Code Issues Releases Wiki Activity

Ensure that all uses of strncpy in wifi component are safe. (#5636)

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This commit is contained in:
Kevin P. Fleming
2023-10-31 17:30:42 -04:00
committed by GitHub
parent 193bac94f4
commit b03eb5ea0a
4 changed files with 14 additions and 14 deletions
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8
esphome/components/wifi/wifi_component_esp8266.cpp
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@@ -230,8 +230,8 @@ bool WiFiComponent::wifi_sta_connect_(const WiFiAP &ap) {
struct station_config conf {};
memset(&conf, 0, sizeof(conf));
strncpy(reinterpret_cast<char *>(conf.ssid), ap.get_ssid().c_str(), sizeof(conf.ssid));
strncpy(reinterpret_cast<char *>(conf.password), ap.get_password().c_str(), sizeof(conf.password));
strncpy(reinterpret_cast<char *>(conf.ssid), ap.get_ssid().c_str(), sizeof(conf.ssid) - 1);
strncpy(reinterpret_cast<char *>(conf.password), ap.get_password().c_str(), sizeof(conf.password) - 1);
if (ap.get_bssid().has_value()) {
conf.bssid_set = 1;
@@ -759,7 +759,7 @@ bool WiFiComponent::wifi_start_ap_(const WiFiAP &ap) {
return false;
struct softap_config conf {};
strncpy(reinterpret_cast<char *>(conf.ssid), ap.get_ssid().c_str(), sizeof(conf.ssid));
strncpy(reinterpret_cast<char *>(conf.ssid), ap.get_ssid().c_str(), sizeof(conf.ssid) - 1);
conf.ssid_len = static_cast<uint8>(ap.get_ssid().size());
conf.channel = ap.get_channel().value_or(1);
conf.ssid_hidden = ap.get_hidden();
@@ -771,7 +771,7 @@ bool WiFiComponent::wifi_start_ap_(const WiFiAP &ap) {
*conf.password = 0;
} else {
conf.authmode = AUTH_WPA2_PSK;
strncpy(reinterpret_cast<char *>(conf.password), ap.get_password().c_str(), sizeof(conf.password));
strncpy(reinterpret_cast<char *>(conf.password), ap.get_password().c_str(), sizeof(conf.password) - 1);
}
ETS_UART_INTR_DISABLE();