fix(ssl): Make the bundle callback per context

Author: me-no-dev

Diff for: libraries/NetworkClientSecure/src/NetworkClientSecure.cpp

@@ -317,11 +317,11 @@ void NetworkClientSecure::setCACert(const char *rootCA) {
 void NetworkClientSecure::setCACertBundle(const uint8_t *bundle) {
   if (bundle != NULL) {
     esp_crt_bundle_set(bundle, sizeof(bundle));
-    attach_ssl_certificate_bundle(true);
+    attach_ssl_certificate_bundle(sslclient.get(), true);
     _use_ca_bundle = true;
   } else {
     esp_crt_bundle_detach(NULL);
-    attach_ssl_certificate_bundle(false);
+    attach_ssl_certificate_bundle(sslclient.get(), false);
     _use_ca_bundle = false;
   }
 }

Diff for: libraries/NetworkClientSecure/src/ssl_client.cpp

@@ -26,9 +26,6 @@
 
 const char *pers = "esp32-tls";
 
-typedef esp_err_t (*crt_bundle_attach_cb)(void *conf);
-static crt_bundle_attach_cb _bundle_attach_cb = NULL;
-
 static int _handle_error(int err, const char *function, int line) {
   if (err == -30848) {
     return err;
@@ -54,11 +51,11 @@ void ssl_init(sslclient_context *ssl_client) {
   ssl_client->peek_buf = -1;
 }
 
-void attach_ssl_certificate_bundle(bool att) {
+void attach_ssl_certificate_bundle(sslclient_context *ssl_client, bool att) {
   if (att) {
-    _bundle_attach_cb = &esp_crt_bundle_attach;
+    ssl_client->bundle_attach_cb = &esp_crt_bundle_attach;
   } else {
-    _bundle_attach_cb = NULL;
+    ssl_client->bundle_attach_cb = NULL;
   }
 }
 
@@ -206,15 +203,14 @@ int start_ssl_client(
       return handle_error(ret);
     }
   } else if (useRootCABundle) {
-    if (_bundle_attach_cb != NULL) {
+    if (ssl_client->bundle_attach_cb != NULL) {
       log_v("Attaching root CA cert bundle");
-      ret = _bundle_attach_cb(&ssl_client->ssl_conf);
-
+      ret = ssl_client->bundle_attach_cb(&ssl_client->ssl_conf);
       if (ret < 0) {
         return handle_error(ret);
       }
     } else {
-      log_e("useRootCABundle is set, but attach_ssl_certificate_bundle(true); was not called!");
+      log_e("useRootCABundle is set, but attach_ssl_certificate_bundle(ssl, true); was not called!");
     }
   } else if (pskIdent != NULL && psKey != NULL) {
     log_v("Setting up PSK");

Diff for: libraries/NetworkClientSecure/src/ssl_client.h

@@ -12,6 +12,8 @@
 #include "mbedtls/ctr_drbg.h"
 #include "mbedtls/error.h"
 
+typedef esp_err_t (*crt_bundle_attach_cb)(void *conf);
+
 typedef struct sslclient_context {
   int socket;
   mbedtls_ssl_context ssl_ctx;
@@ -24,6 +26,8 @@ typedef struct sslclient_context {
   mbedtls_x509_crt client_cert;
   mbedtls_pk_context client_key;
 
+  crt_bundle_attach_cb bundle_attach_cb;
+
   unsigned long socket_timeout;
   unsigned long handshake_timeout;
 
@@ -37,7 +41,7 @@ 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 attach_ssl_certificate_bundle(bool att);
+void attach_ssl_certificate_bundle(sslclient_context *ssl_client, bool att);
 int ssl_starttls_handshake(sslclient_context *ssl_client);
 void stop_ssl_socket(sslclient_context *ssl_client);
 int data_to_read(sslclient_context *ssl_client);