Allow passing IP as connect method parameter in WiFiClientSecure and skip unnecessary host-ip conversions (espressif#7643)

Author: cziter15

libraries/WiFiClientSecure/src/WiFiClientSecure.cpp

@@ -124,12 +124,21 @@ int WiFiClientSecure::connect(const char *host, uint16_t port, int32_t timeout){
 
 int WiFiClientSecure::connect(IPAddress ip, uint16_t port, const char *CA_cert, const char *cert, const char *private_key)
 {
- return connect(ip.toString().c_str(), port, CA_cert, cert, private_key);
+ return connect(ip, port, NULL, CA_cert, cert, private_key);
 }
 
 int WiFiClientSecure::connect(const char *host, uint16_t port, const char *CA_cert, const char *cert, const char *private_key)
 {
- int ret = start_ssl_client(sslclient, host, port, _timeout, CA_cert, _use_ca_bundle, cert, private_key, NULL, NULL, _use_insecure, _alpn_protos);
+ IPAddress address;
+ if (!WiFi.hostByName(host, address))
+ return 0;
+
+ return connect(address, port, host, CA_cert, cert, private_key);
+}
+
+int WiFiClientSecure::connect(IPAddress ip, uint16_t port, const char *host, const char *CA_cert, const char *cert, const char *private_key)
+{
+ int ret = start_ssl_client(sslclient, ip, port, host, _timeout, CA_cert, _use_ca_bundle, cert, private_key, NULL, NULL, _use_insecure, _alpn_protos);
  _lastError = ret;
  if (ret < 0) {
  log_e("start_ssl_client: %d", ret);
@@ -146,7 +155,12 @@ int WiFiClientSecure::connect(IPAddress ip, uint16_t port, const char *pskIdent,
 
 int WiFiClientSecure::connect(const char *host, uint16_t port, const char *pskIdent, const char *psKey) {
  log_v("start_ssl_client with PSK");
- int ret = start_ssl_client(sslclient, host, port, _timeout, NULL, false, NULL, NULL, pskIdent, psKey, _use_insecure, _alpn_protos);
+
+ IPAddress address;
+ if (!WiFi.hostByName(host, address))
+ return 0;
+
+ int ret = start_ssl_client(sslclient, address, port, host, _timeout, NULL, false, NULL, NULL, pskIdent, psKey, _use_insecure, _alpn_protos);
  _lastError = ret;
  if (ret < 0) {
  log_e("start_ssl_client: %d", ret);

libraries/WiFiClientSecure/src/WiFiClientSecure.h

@@ -55,6 +55,7 @@ class WiFiClientSecure : public WiFiClient
  int connect(const char *host, uint16_t port, const char *rootCABuff, const char *cli_cert, const char *cli_key);
  int connect(IPAddress ip, uint16_t port, const char *pskIdent, const char *psKey);
  int connect(const char *host, uint16_t port, const char *pskIdent, const char *psKey);
+ int connect(IPAddress ip, uint16_t port, const char *host, const char *CA_cert, const char *cert, const char *private_key);
  int peek();
  size_t write(uint8_t data);
  size_t write(const uint8_t *buf, size_t size);

libraries/WiFiClientSecure/src/ssl_client.cpp

@@ -54,7 +54,7 @@ void ssl_init(sslclient_context *ssl_client)
 }
 
 
-int start_ssl_client(sslclient_context *ssl_client, const char *host, uint32_t port, int timeout, const char *rootCABuff, bool useRootCABundle, const char *cli_cert, const char *cli_key, const char *pskIdent, const char *psKey, bool insecure, const char **alpn_protos)
+int start_ssl_client(sslclient_context *ssl_client, const IPAddress& ip, uint32_t port, const char* hostname, int timeout, const char *rootCABuff, bool useRootCABundle, const char *cli_cert, const char *cli_key, const char *pskIdent, const char *psKey, bool insecure, const char **alpn_protos)
 {
  char buf[512];
  int ret, flags;
@@ -74,16 +74,11 @@ int start_ssl_client(sslclient_context *ssl_client, const char *host, uint32_t p
  return ssl_client->socket;
  }
 
- IPAddress srv((uint32_t)0);
- if(!WiFiGenericClass::hostByName(host, srv)){
- return -1;
- }
-
  fcntl( ssl_client->socket, F_SETFL, fcntl( ssl_client->socket, F_GETFL, 0 ) | O_NONBLOCK );
  struct sockaddr_in serv_addr;
  memset(&serv_addr, 0, sizeof(serv_addr));
  serv_addr.sin_family = AF_INET;
- serv_addr.sin_addr.s_addr = srv;
+ serv_addr.sin_addr.s_addr = ip;
  serv_addr.sin_port = htons(port);
 
  if(timeout <= 0){
@@ -259,7 +254,7 @@ int start_ssl_client(sslclient_context *ssl_client, const char *host, uint32_t p
  log_v("Setting hostname for TLS session...");
 
  // Hostname set here should match CN in server certificate
- if((ret = mbedtls_ssl_set_hostname(&ssl_client->ssl_ctx, host)) != 0){
+ if((ret = mbedtls_ssl_set_hostname(&ssl_client->ssl_ctx, hostname != NULL ? hostname : ip.toString().c_str())) != 0){
  return handle_error(ret);
  }
 

libraries/WiFiClientSecure/src/ssl_client.h

@@ -30,7 +30,7 @@ typedef struct sslclient_context {
 
 
 void ssl_init(sslclient_context *ssl_client);
-int start_ssl_client(sslclient_context *ssl_client, const char *host, uint32_t port, int timeout, const char *rootCABuff, bool useRootCABundle, const char *cli_cert, const char *cli_key, const char *pskIdent, const char *psKey, bool insecure, const char **alpn_protos);
+int start_ssl_client(sslclient_context *ssl_client, const IPAddress& ip, uint32_t port, const char* hostname, int timeout, const char *rootCABuff, bool useRootCABundle, const char *cli_cert, const char *cli_key, const char *pskIdent, const char *psKey, bool insecure, const char **alpn_protos);
 void stop_ssl_socket(sslclient_context *ssl_client, const char *rootCABuff, const char *cli_cert, const char *cli_key);
 int data_to_read(sslclient_context *ssl_client);
 int send_ssl_data(sslclient_context *ssl_client, const uint8_t *data, size_t len);