Fix some WiFi issues (#5395)

* Add back ARDUINO_EVENT_WIFI_READY

Fixes: https://github.com/espressif/arduino-esp32/issues/5315

* use strncpy and strncmp for WiFi SSID and Password in AP and STA

Fixes: https://github.com/espressif/arduino-esp32/issues/5367

* Implement timeout for waitForConnectResult

Fixes: https://github.com/espressif/arduino-esp32/issues/5330

* Remove old definition of "reverse" from stdlib_noniso

Fixes: https://github.com/espressif/arduino-esp32/issues/5045

* Make "reverse" noniso conditional on ESP_DSP

cores/esp32/stdlib_noniso.c

@@ -28,7 +28,9 @@
 #include <stdint.h>
 #include <math.h>
 #include "stdlib_noniso.h"
+#include "esp_system.h"
 
+#if !CONFIG_DSP_ANSI && !CONFIG_DSP_OPTIMIZED
 void reverse(char* begin, char* end) {
     char *is = begin;
     char *ie = end - 1;
@@ -40,6 +42,9 @@ void reverse(char* begin, char* end) {
         --ie;
     }
 }
+#else
+void reverse(char* begin, char* end);
+#endif
 
 char* ltoa(long value, char* result, int base) {
     if(base < 2 || base > 16) {

libraries/WiFi/src/WiFiAP.cpp

@@ -60,10 +60,10 @@ static bool softap_config_equal(const wifi_config_t& lhs, const wifi_config_t& r
  */
 static bool softap_config_equal(const wifi_config_t& lhs, const wifi_config_t& rhs)
 {
-    if(strcmp(reinterpret_cast<const char*>(lhs.ap.ssid), reinterpret_cast<const char*>(rhs.ap.ssid)) != 0) {
+    if(strncmp(reinterpret_cast<const char*>(lhs.ap.ssid), reinterpret_cast<const char*>(rhs.ap.ssid), 32) != 0) {
         return false;
     }
-    if(strcmp(reinterpret_cast<const char*>(lhs.ap.password), reinterpret_cast<const char*>(rhs.ap.password)) != 0) {
+    if(strncmp(reinterpret_cast<const char*>(lhs.ap.password), reinterpret_cast<const char*>(rhs.ap.password), 64) != 0) {
         return false;
     }
     if(lhs.ap.channel != rhs.ap.channel) {
@@ -98,12 +98,12 @@ void wifi_softap_config(wifi_config_t *wifi_config, const char * ssid=NULL, cons
     wifi_config->ap.password[0] = 0;
     wifi_config->ap.ftm_responder = ftm_responder;
     if(ssid != NULL && ssid[0] != 0){
-    	snprintf((char*)wifi_config->ap.ssid, 32, ssid);
+        strncpy((char*)wifi_config->ap.ssid, ssid, 32);
     	wifi_config->ap.ssid_len = strlen(ssid);
     	if(password != NULL && password[0] != 0){
     		wifi_config->ap.authmode = authmode;
     		wifi_config->ap.pairwise_cipher = WIFI_CIPHER_TYPE_CCMP; // Disable by default enabled insecure TKIP and use just CCMP.
-    	    snprintf((char*)wifi_config->ap.password, 64, password);
+            strncpy((char*)wifi_config->ap.password, password, 64);
     	}
     }
 }

libraries/WiFi/src/WiFiGeneric.cpp

@@ -567,6 +567,11 @@ bool wifiLowLevelInit(bool persistent){
         if(!persistent){
         	lowLevelInitDone = esp_wifi_set_storage(WIFI_STORAGE_RAM) == ESP_OK;
         }
+        if(lowLevelInitDone){
+			arduino_event_t arduino_event;
+			arduino_event.event_id = ARDUINO_EVENT_WIFI_READY;
+			postArduinoEvent(&arduino_event);
+        }
     }
     return lowLevelInitDone;
 }

libraries/WiFi/src/WiFiSTA.cpp

@@ -82,14 +82,10 @@ static void wifi_sta_config(wifi_config_t * wifi_config, const char * ssid=NULL,
     wifi_config->sta.ssid[0] = 0;
     wifi_config->sta.password[0] = 0;
     if(ssid != NULL && ssid[0] != 0){
-    	snprintf((char*)wifi_config->sta.ssid, 32, ssid);
+        strncpy((char*)wifi_config->sta.ssid, ssid, 32);
     	if(password != NULL && password[0] != 0){
     		wifi_config->sta.threshold.authmode = WIFI_AUTH_WEP;
-    		if(strlen(password) == 64){
+    		strncpy((char*)wifi_config->sta.password, password, 64);
-    			memcpy((char*)wifi_config->sta.password, password, 64);
-    		} else {
-    			snprintf((char*)wifi_config->sta.password, 64, password);
-    		}
     	}
         if(bssid != NULL){
             wifi_config->sta.bssid_set = 1;
@@ -165,15 +161,11 @@ wl_status_t WiFiSTAClass::begin(const char* ssid, const char *passphrase, int32_
 
     wifi_config_t conf;
     memset(&conf, 0, sizeof(wifi_config_t));
-    strcpy(reinterpret_cast<char*>(conf.sta.ssid), ssid);
+    strncpy(reinterpret_cast<char*>(conf.sta.ssid), ssid, 32);
     conf.sta.scan_method = WIFI_ALL_CHANNEL_SCAN;       //force full scan to be able to choose the nearest / strongest AP
 
     if(passphrase) {
-        if (strlen(passphrase) == 64){ // it's not a passphrase, is the PSK
+        strncpy(reinterpret_cast<char*>(conf.sta.password), passphrase, 64);
-            memcpy(reinterpret_cast<char*>(conf.sta.password), passphrase, 64);
-        } else {
-            strcpy(reinterpret_cast<char*>(conf.sta.password), passphrase);
-        }
     }
 
     wifi_config_t current_conf;
@@ -370,14 +362,14 @@ bool WiFiSTAClass::getAutoReconnect()
  * returns the status reached or disconnect if STA is off
  * @return wl_status_t
  */
-uint8_t WiFiSTAClass::waitForConnectResult()
+uint8_t WiFiSTAClass::waitForConnectResult(unsigned long timeoutLength)
 {
     //1 and 3 have STA enabled
     if((WiFiGenericClass::getMode() & WIFI_MODE_STA) == 0) {
         return WL_DISCONNECTED;
     }
-    int i = 0;
+    unsigned long start = millis();
-    while((!status() || status() >= WL_DISCONNECTED) && i++ < 100) {
+    while((!status() || status() >= WL_DISCONNECTED) && (millis() - start) < timeoutLength) {
         delay(100);
     }
     return status();

libraries/WiFi/src/WiFiSTA.h

@@ -56,7 +56,7 @@ public:
     bool setAutoReconnect(bool autoReconnect);
     bool getAutoReconnect();
 
-    uint8_t waitForConnectResult();
+    uint8_t waitForConnectResult(unsigned long timeoutLength = 60000);
 
     // STA network info
     IPAddress localIP();