err_handler

added an error handler for when a pointer is NULL

got rid of malloc in format reply

project/Core/Inc/UDP_broadcast.h

@@ -13,17 +13,27 @@
 #include <stdlib.h>
 #include "lwip/netif.h"
 #include "lwip.h"
-#define LOGGER_LEVEL_INFO
+#define LOGGER_LEVEL_ALL
 #include "log.h"
+
+#define sod_name "set_owner_details_name"
+#define god_name "get_owner_details_name"
+#define sod_surname "set_owner_details_surname"
+#define god_surname "get_owner_details_surname"
+#define sod_reply "set_owner_details_reply"
+#define god_reply "get_owner_details_reply"
+#define sod_mac "set_owner_details_mac"
+#define sod "set_owner_details"
+#define f_reply "format_reply"
+
+
 typedef struct  {
     char name[20];
     char surname[20];
     uint8_t mac_address[6];
-    char reply[200];
+    char reply[100];
 }owner_details_t;
 
-uint8_t set_owner_details_name(owner_details_t*, char* );
-uint8_t set_owner_details_sirname(owner_details_t*, char* );
 uint8_t set_owner_details(owner_details_t*, char* , char*);
 
 char* get_owner_details_name(owner_details_t*);

project/Core/Src/UDP_broadcast.c

@@ -10,19 +10,47 @@
 static const char *TAG = "UDP_broadcast";
 
 /**
- * @fn void set_owner_details_mac(owner_details_t*)
+ * @fn void owner_details_error_handler(owner_details_t*, char*, char*)
  * @brief
  *
  * @param owner
+ * @param word
+ * @param funct
  */
 
-static void set_owner_details_mac(owner_details_t* owner){
+static void owner_details_error_handler(owner_details_t* owner, char* funct,char* word){
+	if(owner == NULL && word == NULL){
+		LOG_WARN(TAG,"%s: owner and string given are both NULL pointers",funct);
+	}
+	else if(owner == NULL){
+		LOG_WARN(TAG,"%s: owner given is a NULL pointer",funct);
+	}
+	else{
+		LOG_WARN(TAG,"%s: string given is a NULL pointer",funct);
+	}
+}
+
+/**
+ * @fn uint8_t set_owner_details_mac(owner_details_t*)
+ * @brief
+ *
+ * @param owner
+ * @return
+ */
+
+static uint8_t set_owner_details_mac(owner_details_t* owner){
 	// Access the MAC address
-
+	if(owner != NULL){
-
 		for(int i = 0; i < 6; i++){
 			owner->mac_address[i] = netif_default->hwaddr[i];
 		}
+		return 1;
+	}
+	else{
+		owner_details_error_handler(owner, sod_mac,"");
+		return 0;
+	}
+
 
 }
 
@@ -35,13 +63,14 @@ static void set_owner_details_mac(owner_details_t* owner){
  * @return
  */
 
-uint8_t set_owner_details_name(owner_details_t *owner, char *name){
+static uint8_t set_owner_details_name(owner_details_t *owner, char *name){
-	if(name != NULL){
+	if(name != NULL && owner != NULL){
 		LOG_DEBUG(TAG,"set: %s",name);
 		strncpy(owner->name,name,sizeof(owner->name));
 		return 1;
 	}
 	else{
+		owner_details_error_handler(owner, sod_name, name);
 		return 0;
 	}
 
@@ -55,13 +84,14 @@ uint8_t set_owner_details_name(owner_details_t *owner, char *name){
  * @param surname
  * @return
  */
-uint8_t set_owner_details_surname(owner_details_t* owner, char* surname){
+static uint8_t set_owner_details_surname(owner_details_t* owner, char* surname){
-	if(surname != NULL){
+	if(surname != NULL && owner != NULL){
 		LOG_DEBUG(TAG,"set: %s",surname);
 		strncpy(owner->surname,surname,sizeof(owner->surname));
 		return 1;
 	}
 	else{
+		owner_details_error_handler(owner, sod_surname, surname);
 		return 0;
 	}
 }
@@ -76,45 +106,46 @@ uint8_t set_owner_details_surname(owner_details_t* owner, char* surname){
  */
 
 static uint8_t set_owner_details_reply(owner_details_t *owner, char *reply){
-	if(reply != NULL){
+	if(reply != NULL && owner != NULL){
 		LOG_DEBUG(TAG,"set: %s",reply);
 		strncpy(owner->reply,reply,sizeof(owner->reply));
 		return 1;
 	}
 	else{
+		owner_details_error_handler(owner, sod_reply, reply);
 		return 0;
 	}
 }
 
 /**
- * @fn void format_reply(owner_details_t*)
+ * @fn uint8_t format_reply(owner_details_t*)
  * @brief
  *
  * @param owner
+ * @return
  */
 
-static void format_reply(owner_details_t *owner){
+static uint8_t format_reply(owner_details_t *owner){
 	size_t reply_len = 0;
 	char mac_addr_str[18];
-	char* reply_buf = NULL;
+	char reply_buf[100];
 	if (owner != NULL) {
 		reply_len = 20 + sizeof(mac_addr_str) + sizeof(owner->surname) + sizeof(owner->name);
-        reply_buf = (char*)malloc(reply_len);
 
 
 		snprintf(mac_addr_str, sizeof(mac_addr_str), "%02X:%02X:%02X:%02X:%02X:%02X",
 		owner->mac_address[0], owner->mac_address[1], owner->mac_address[2],
 		owner->mac_address[3], owner->mac_address[4], owner->mac_address[5]);
 
-        if (reply_buf != NULL) {
         snprintf(reply_buf, reply_len, "%s is present and my owner is %s %s",
             	mac_addr_str, owner->surname, owner->name);
 
         set_owner_details_reply(owner, reply_buf);
-
+        return 1;
-            free(reply_buf); // Free the temporary buffer
 	}
-
+	else{
+		owner_details_error_handler(owner, f_reply,"");
+		return 0;
 	}
 }
 
@@ -128,15 +159,25 @@ static void format_reply(owner_details_t *owner){
  * @return
  */
 uint8_t set_owner_details(owner_details_t* owner, char* name, char* surname){
-	if(set_owner_details_name(owner, name) && set_owner_details_surname(owner, surname)){
+	if(owner != NULL){
-		set_owner_details_mac(owner);
+		if(set_owner_details_name(owner, name) && set_owner_details_surname(owner, surname) && set_owner_details_mac(owner)){
-		format_reply(owner);
+			if(format_reply(owner)){
-		return 1;
+				return 1;;
 			}
 			else{
 				return 0;
 			}
 		}
+		else{
+			return 0;
+		}
+	}
+	else{
+		owner_details_error_handler(owner, f_reply,"");
+		return 0;
+	}
+
+}
 
 /**
  * @fn char get_owner_details_name*(owner_details_t)
@@ -147,11 +188,11 @@ uint8_t set_owner_details(owner_details_t* owner, char* name, char* surname){
  */
 
 char* get_owner_details_name(owner_details_t *owner){
-	char err_reply[20] = "no name yet";
+	if(owner == NULL || owner->name == NULL){
-	if(owner->name == NULL){
+		owner_details_error_handler(owner, god_name,"");
-		strncpy(owner->name,err_reply,sizeof(owner->name));
+		return "|no name yet|";
 	}
-	return *owner->name;
+	return owner->name;
 }
 
 /**
@@ -163,9 +204,9 @@ char* get_owner_details_name(owner_details_t *owner){
  */
 
 char* get_owner_details_surname(owner_details_t* owner){
-	char err_reply[20] = "no surname yet";
+	if(owner == NULL || owner->surname == NULL){
-	if(owner->surname == NULL){
+		owner_details_error_handler(owner, god_surname,"");
-		strncpy(owner->surname,err_reply,sizeof(owner->surname));
+		return "|no surname yet|";
 	}
 	return owner->surname;
 }
@@ -179,10 +220,9 @@ char* get_owner_details_surname(owner_details_t* owner){
  */
 
 char* get_owner_details_reply(owner_details_t *owner){
-	LOG_DEBUG(TAG,"getting reply");
+	if(owner == NULL || owner->reply == NULL){
-	char err_reply[20] = "no reply yet";
+		owner_details_error_handler(owner, god_reply,"");
-	if(owner->reply == NULL){
+		return "|no reply formatted yet|";
-		strncpy(owner->reply,err_reply,sizeof(owner->reply));
 	}
 	return owner->reply;
 }

project/Core/Src/main.c

@@ -111,16 +111,39 @@ int main(void)
   MX_QUADSPI_Init();
   /* USER CODE BEGIN 2 */
     owner_details_t owner;
+    owner_details_t* owner_error = NULL;
+    char* test_error = NULL;
   	LOG_DEBUG(TAG,"\nhelloworld");
-  	LOG_DEBUG(TAG,"%s",get_owner_details_reply(&owner));
+  	LOG_DEBUG(TAG,"owner1:%s",get_owner_details_reply(&owner));
   	if(!set_owner_details(&owner, "joran", "vn")){
   		LOG_DEBUG(TAG,"error");;
   	}
-  	LOG_DEBUG(TAG,"%s",get_owner_details_reply(&owner));
+  	LOG_DEBUG(TAG,"owner2:%s",get_owner_details_reply(&owner));
+
   	if(!set_owner_details(&owner, "joran", "Van Nieuwenhoven")){
   		LOG_DEBUG(TAG,"error");
   	}
-  	LOG_DEBUG(TAG,"%s",get_owner_details_reply(&owner));
+  	LOG_DEBUG(TAG,"owner3:%s",get_owner_details_reply(&owner));
+
+  	if(!set_owner_details(&owner, "joran", "")){
+  		LOG_DEBUG(TAG,"error");
+  	}
+  	LOG_DEBUG(TAG,"owner4:%s",get_owner_details_reply(&owner));
+
+  	if(!set_owner_details(&owner, "joran", test_error)){
+  		LOG_DEBUG(TAG,"error setting owner details");
+  	}
+  	LOG_DEBUG(TAG,"owner5:%s",get_owner_details_reply(&owner));
+
+  	if(!set_owner_details(&owner, test_error, "Van Nieuwenhoven")){
+  		LOG_DEBUG(TAG,"error setting owner details");
+  	}
+  	LOG_DEBUG(TAG,"owner6:%s",get_owner_details_reply(&owner));
+
+  	if(!set_owner_details(owner_error, test_error, "Van Nieuwenhoven")){
+  		LOG_DEBUG(TAG,"error setting owner details");
+  	}
+  	LOG_DEBUG(TAG,"owner7:%s",get_owner_details_reply(owner_error));
   /* USER CODE END 2 */
 
   /* Infinite loop */