wiseconnect: Use native Posix functions

sl_strlen() and sl_strnlen() can be safely replaced by Posix
equivalents.

Signed-off-by: Rahul Gurram <rahul.gurram@silabs.com>

Author: ragurram26

wiseconnect/components/service/http_client/si91x_socket/sl_http_client.c

@@ -545,14 +545,14 @@ static sl_status_t sli_si91x_send_http_client_request(sl_http_client_method_type
       if (request->host_name != NULL && request->ip_address != request->host_name) {
 
         sl_si91x_socket_type_length_value_t *tls_sni = (sl_si91x_socket_type_length_value_t *)malloc(
-          sizeof(sl_si91x_socket_type_length_value_t) + sl_strlen((char *)request->host_name));
+          sizeof(sl_si91x_socket_type_length_value_t) + strlen((char *)request->host_name));
         if (tls_sni == NULL) {
           free(http_client_request);
           return SL_STATUS_ALLOCATION_FAILED;
         }
         tls_sni->type = SL_SI91X_TLS_EXTENSION_SNI_TYPE;
 
-        tls_sni->length = sl_strlen((char *)(request->host_name));
+        tls_sni->length = strlen((char *)(request->host_name));
         memcpy(tls_sni->value, request->host_name, tls_sni->length);
         status = sli_si91x_set_sni_for_embedded_socket(tls_sni);
         free(tls_sni);
@@ -590,7 +590,7 @@ static sl_status_t sli_si91x_send_http_client_request(sl_http_client_method_type
 
   // Check for HTTP_V_1.1 and Empty host name and fill IP address
   if (client_internal->configuration.http_version == SL_HTTP_V_1_1
-      && (request->host_name == NULL || sl_strlen((char *)request->host_name) == 0)) {
+      && (request->host_name == NULL || strlen((char *)request->host_name) == 0)) {
     http_buffer_offset += snprintf((char *)(http_client_request->buffer + http_buffer_offset),
                                    SLI_SI91X_HTTP_BUFFER_LEN - http_buffer_offset,
                                    "%s",
@@ -640,7 +640,7 @@ static sl_status_t sli_si91x_send_http_client_request(sl_http_client_method_type
       // Copy total data length into buffer
       uint8_t temp_str[TEMP_STR_SIZE] = { 0 };
       convert_itoa(request->body_length, temp_str);
-      size_t temp_str_len = sl_strnlen((char *)temp_str, TEMP_STR_SIZE + 1);
+      size_t temp_str_len = strnlen((char *)temp_str, TEMP_STR_SIZE + 1);
       memcpy(http_client_request->buffer + http_buffer_offset, temp_str, temp_str_len);
       http_buffer_offset += temp_str_len;
     } else {
@@ -652,7 +652,7 @@ static sl_status_t sli_si91x_send_http_client_request(sl_http_client_method_type
 
   // Check if request buffer is overflowed or resource length is overflowed
   if (http_buffer_offset > SLI_SI91X_HTTP_BUFFER_LEN
-      || sl_strnlen((char *)request->resource, SLI_SI91X_MAX_HTTP_URL_SIZE + 1) > SLI_SI91X_MAX_HTTP_URL_SIZE) {
+      || strnlen((char *)request->resource, SLI_SI91X_MAX_HTTP_URL_SIZE + 1) > SLI_SI91X_MAX_HTTP_URL_SIZE) {
     free(http_client_request);
     return SL_STATUS_HAS_OVERFLOWED;
   }
@@ -1034,7 +1034,7 @@ sl_status_t sl_http_client_write_chunked_data(const sl_http_client_t *client,
   }
 
   // Check for invalid data length
-  if ((data_length == 0) && (sl_strlen((char *)data) == 0)) {
+  if ((data_length == 0) && (strlen((char *)data) == 0)) {
     return SL_STATUS_INVALID_PARAMETER;
   }
 

wiseconnect/components/service/mdns/si91x/sl_mdns.c

@@ -141,7 +141,7 @@ sl_status_t sl_mdns_init(sl_mdns_t *mdns, const sl_mdns_configuration_t *config,
     return SL_STATUS_INVALID_TYPE;
   }
 
-  length_host_name = sl_strnlen((char *)config->host_name, 32) + 1; // +1 for null terminator
+  length_host_name = strnlen((char *)config->host_name, 32) + 1; // +1 for null terminator
   memcpy(req.buffer, config->host_name, length_host_name);
   length = sizeof(sl_si91x_mdns_req_t) - MDNSD_BUFFER_SIZE + length_host_name;
 
@@ -237,9 +237,9 @@ sl_status_t sl_mdns_register_service(sl_mdns_t *mdns, sl_net_interface_t interfa
     return SL_STATUS_INVALID_PARAMETER;
   }
 
-  length_service_type    = sl_strnlen((char *)service->service_type, MDNSD_BUFFER_SIZE) + 1;
-  length_instance_name   = sl_strnlen((char *)service->instance_name, MDNSD_BUFFER_SIZE) + 1;
-  length_service_message = sl_strnlen((char *)service->service_message, MDNSD_BUFFER_SIZE) + 1;
+  length_service_type    = strnlen((char *)service->service_type, MDNSD_BUFFER_SIZE) + 1;
+  length_instance_name   = strnlen((char *)service->instance_name, MDNSD_BUFFER_SIZE) + 1;
+  length_service_message = strnlen((char *)service->service_message, MDNSD_BUFFER_SIZE) + 1;
 
   if ((length_service_type + length_instance_name + length_service_message) > MDNSD_BUFFER_SIZE) {
     return SL_STATUS_INVALID_PARAMETER;

wiseconnect/components/service/mqtt/si91x/sl_mqtt_client.c

@@ -154,7 +154,7 @@ static void sli_si91x_get_subscription(const sl_mqtt_client_t *client,
 
     while (subscribed_topic_token != NULL && received_topic_token != NULL) {
       uint8_t subscribe_topic_length =
-        (uint8_t)(sl_strnlen(subscribed_topic_token, SI91X_MQTT_CLIENT_TOPIC_MAXIMUM_LENGTH));
+        (uint8_t)(strnlen(subscribed_topic_token, SI91X_MQTT_CLIENT_TOPIC_MAXIMUM_LENGTH));
 
       // This boolean stores whether the subscribed_topic_token is wildcard or not by checking the length of the token and character stored in it.
       uint8_t is_wild_card =
@@ -168,7 +168,7 @@ static void sli_si91x_get_subscription(const sl_mqtt_client_t *client,
       // if subscribed_topic_token isn't wildcard and tokens does not match, break the loop and continue searching with other subscriptions.
       if (!is_wild_card
           && ((subscribe_topic_length
-               != sl_strnlen((char *)received_topic_token, SI91X_MQTT_CLIENT_TOPIC_MAXIMUM_LENGTH))
+               != strnlen((char *)received_topic_token, SI91X_MQTT_CLIENT_TOPIC_MAXIMUM_LENGTH))
               || memcmp(subscribed_topic_token, received_topic_token, subscribe_topic_length) != 0)) {
         break;
       } else if (is_multi_level_wild_card) {