Used Users instead of IP addresses

main.c

@@ -15,8 +15,12 @@
 #define BUFFER_SIZE 10000
 #define MAX_CONNECTIONS 100
 
-User* create_user_list(char* filename);
+User** create_user_list(char* filename);
 void sigint_handler(int dummy);
+User* fetch_user(char* username);
+
+User** users;
+int num_users;
 
 bool stop_running = false;
 
@@ -29,10 +33,11 @@ int main() {
 
 	fd_set read_fd_set;
 	int conn_sockets[MAX_CONNECTIONS] = {-1};
-	char* dest_address[MAX_CONNECTIONS] = {NULL};
+	User* dest_users[MAX_CONNECTIONS] = {NULL};
 	FD_ZERO(&read_fd_set);
 	char buffer[BUFFER_SIZE];
-	User* users = create_user_list("user_file.txt");
+	users = create_user_list("user_file.txt");
+	num_users = num_of_lines("user_file.txt");
 
 	struct sockaddr addr_struct;
 	int server_sock = create_local(4,'T',"127.0.0.1",30000,&addr_struct);
@@ -67,19 +72,15 @@ int main() {
 					if (num_bytes_read <= 0) {
 						close(conn_sockets[i]);
 						conn_sockets[i] = 0;
-						dest_address[i] = NULL;
+						dest_users[i] = NULL;
 					} else {
-						if (dest_address[i] == NULL) {
+						if (dest_users[i] == NULL) {
-							dest_address[i] = fetch_address(buffer);
+							dest_users[i] = fetch_user(user_string(buffer));
-							if (dest_address[i] == NULL) {
+							if (dest_users[i] == NULL) {
-								printf("Invalid message format\n");
+								printf("Invalid message format or User\n");
 								exit(241);
-							}
-							if (check_ip_ver(dest_address[i]) == -1) {
-								printf("Invalid address: %s\n",dest_address[i]);
-								exit(242);
 							} else {
-								printf("Valid IPv%d addres: %s\n",check_ip_ver(dest_address[i]),dest_address[i]);
+								printf("Message intended for %s\n",dest_users[i]->username);
 								exit(0);
 							}
 
@@ -119,7 +120,7 @@ int main() {
 }
 
 
-User* create_user_list(char* filename) {
+User** create_user_list(char* filename) {
 
 	/* Structure of user file - <username> <password> on every line */
 
@@ -127,13 +128,13 @@ User* create_user_list(char* filename) {
         char* file_str = file_to_string(filename);
 
         char* token = malloc(sizeof(char) * 30);
-        User* users = calloc(num_users, sizeof(User));
+        User** users = malloc (num_users * sizeof(User*));
 
         token = strtok(file_str," \r\n");
-        for (int i=0;i<num_users;i++) {
+        for (int i=0;i<num_users-1;i++) {
-                users[i].username = token;
+		users[i]->username = strdup(token);
                 token = strtok(NULL," \r\n");
-                users[i].password = token;
+                users[i]->password = strdup(token);
                 token = strtok(NULL," \r\n");
         }
 
@@ -144,3 +145,17 @@ User* create_user_list(char* filename) {
 void sigint_handler(int dummy) {
 	stop_running = true;	
 }
+
+User* fetch_user(char* username) {
+	if (username == NULL) {
+		return NULL;
+	}
+
+	for (int i=0;i<num_users;i++) {
+		if (strcmp(users[i]->username, username) == 0) {
+			return users[i];
+		}
+	}
+
+	return NULL;
+}