replace strncpy with strlcpy in wifi examples for safety's sake

examples/provisioning/custom_config/main/app_prov.c

@@ -302,8 +302,7 @@ static esp_err_t start_wifi_ap(const char *ssid, const char *pass)
         },
     };
 
-    strncpy((char *) wifi_config.ap.ssid, ssid, sizeof(wifi_config.ap.ssid));
-    wifi_config.ap.ssid_len = strnlen(ssid, sizeof(wifi_config.ap.ssid));
+    strlcpy((char *) wifi_config.ap.ssid, ssid, sizeof(wifi_config.ap.ssid));
 
     if (strlen(pass) == 0) {
         memset(wifi_config.ap.password, 0, sizeof(wifi_config.ap.password));

examples/provisioning/softap_prov/main/app_prov.c

@@ -288,8 +288,7 @@ static esp_err_t start_wifi_ap(const char *ssid, const char *pass)
         },
     };
 
-    strncpy((char *) wifi_config.ap.ssid, ssid, sizeof(wifi_config.ap.ssid));
-    wifi_config.ap.ssid_len = strnlen(ssid, sizeof(wifi_config.ap.ssid));
+    strlcpy((char *) wifi_config.ap.ssid, ssid, sizeof(wifi_config.ap.ssid));
 
     if (strlen(pass) == 0) {
         memset(wifi_config.ap.password, 0, sizeof(wifi_config.ap.password));

examples/system/console/main/cmd_wifi.c

@@ -26,7 +26,7 @@ static EventGroupHandle_t wifi_event_group;
 const int CONNECTED_BIT = BIT0;
 
 
-static void event_handler(void* arg, esp_event_base_t event_base, 
+static void event_handler(void* arg, esp_event_base_t event_base,
                                 int32_t event_id, void* event_data)
 {
     if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
@@ -61,9 +61,9 @@ static bool wifi_join(const char *ssid, const char *pass, int timeout_ms)
 {
     initialise_wifi();
     wifi_config_t wifi_config = { 0 };
-    strncpy((char *) wifi_config.sta.ssid, ssid, sizeof(wifi_config.sta.ssid));
+    strlcpy((char *) wifi_config.sta.ssid, ssid, sizeof(wifi_config.sta.ssid));
     if (pass) {
-        strncpy((char *) wifi_config.sta.password, pass, sizeof(wifi_config.sta.password));
+        strlcpy((char *) wifi_config.sta.password, pass, sizeof(wifi_config.sta.password));
     }
 
     ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );

examples/wifi/iperf/main/cmd_wifi.c

@@ -53,7 +53,7 @@ static EventGroupHandle_t wifi_event_group;
 const int CONNECTED_BIT = BIT0;
 const int DISCONNECTED_BIT = BIT1;
 
-static void scan_done_handler(void* arg, esp_event_base_t event_base, 
+static void scan_done_handler(void* arg, esp_event_base_t event_base,
                               int32_t event_id, void* event_data)
 {
     uint16_t sta_number = 0;
@@ -76,14 +76,14 @@ static void scan_done_handler(void* arg, esp_event_base_t event_base,
     ESP_LOGI(TAG, "sta scan done");
 }
 
-static void got_ip_handler(void* arg, esp_event_base_t event_base, 
+static void got_ip_handler(void* arg, esp_event_base_t event_base,
                            int32_t event_id, void* event_data)
 {
     xEventGroupClearBits(wifi_event_group, DISCONNECTED_BIT);
     xEventGroupSetBits(wifi_event_group, CONNECTED_BIT);
 }
 
-static void disconnect_handler(void* arg, esp_event_base_t event_base, 
+static void disconnect_handler(void* arg, esp_event_base_t event_base,
                                int32_t event_id, void* event_data)
 {
     if (reconnect) {
@@ -128,7 +128,7 @@ static bool wifi_cmd_sta_join(const char* ssid, const char* pass)
 
     strlcpy((char*) wifi_config.sta.ssid, ssid, sizeof(wifi_config.sta.ssid));
     if (pass) {
-        strncpy((char*) wifi_config.sta.password, pass, sizeof(wifi_config.sta.password));
+        strlcpy((char*) wifi_config.sta.password, pass, sizeof(wifi_config.sta.password));
     }
 
     if (bits & CONNECTED_BIT) {
@@ -205,14 +205,14 @@ static bool wifi_cmd_ap_set(const char* ssid, const char* pass)
     };
 
     reconnect = false;
-    strncpy((char*) wifi_config.ap.ssid, ssid, sizeof(wifi_config.ap.ssid));
+    strlcpy((char*) wifi_config.ap.ssid, ssid, sizeof(wifi_config.ap.ssid));
     if (pass) {
         if (strlen(pass) != 0 && strlen(pass) < 8) {
             reconnect = true;
             ESP_LOGE(TAG, "password less than 8");
             return false;
         }
-        strncpy((char*) wifi_config.ap.password, pass, sizeof(wifi_config.ap.password));
+        strlcpy((char*) wifi_config.ap.password, pass, sizeof(wifi_config.ap.password));
     }
 
     if (strlen(pass) == 0) {