feature: flags -F, --max_retries and --ttl (wip)

include/parsing.h

@@ -1,18 +1,22 @@
 #pragma once
 
+#include <stdbool.h>
 #include <stdint.h>
 
 #include "scan.h"
 
-#define NB_OPTIONS 6
-
 typedef enum {
+	// long options
 	FL_HELP,
 	FL_PORTS,
 	FL_IP,
 	FL_FILE,
 	FL_SPEEDUP,
 	FL_SCAN,
+	FL_MAXRETRIES,
+	FL_TTL,
+	// short options
+	FL_FAST,
 } e_flag;
 
 struct option_lst {
@@ -22,6 +26,7 @@ struct option_lst {
 };
 
 struct option_lst *parse_options(int ac, char *const *av);
+bool option_isset(const struct option_lst *options, e_flag flag);
 char *get_option_arg(const struct option_lst *options, e_flag flag);
 int parse_ports(const char *arg, uint16_t *start, uint16_t *end);
 e_scantype parse_type(const char *arg);

include/scan.h

@@ -20,6 +20,8 @@ struct scan {
 	uint16_t port_start;
 	uint16_t port;
 	e_scantype type;
+	uint8_t ttl;
+	uint8_t max_retries;
 	struct response *response;
 };
 

include/thread.h

@@ -12,6 +12,8 @@ struct thread {
 	uint16_t port_end;
 	char *dest_addr;
 	e_scantype type;
+	uint8_t max_retries;
+	uint8_t ttl;
 	struct host host;
 	struct response *responses;
 };