feature: start to implement responses

include/host.h

@@ -0,0 +1,11 @@
+#pragma once
+
+#include <limits.h>
+#include <linux/if.h>
+#include <netinet/in.h>
+
+struct host {
+	char name[HOST_NAME_MAX];
+	char ip[INET_ADDRSTRLEN];
+	char interface[IFNAMSIZ];
+};

include/interface.h

@@ -1,3 +1,5 @@
 #pragma once
 
-char *get_interface_name(void);
+#include "host.h"
+
+int get_interface_name(struct host *host);

include/response.h

@@ -0,0 +1,23 @@
+#pragma once
+
+#include <netinet/tcp.h>
+#include <netinet/udp.h>
+#include <stdint.h>
+
+#include "scan.h"
+
+typedef enum {
+	OPEN,
+	CLOSE,
+	FILTERED,
+	UNFILTERED,
+} e_state;
+
+struct response {
+	uint16_t port;
+	e_state state;
+	char *service;
+};
+
+void tcp_response(struct tcphdr *tcp, const struct scan *data);
+void udp_response(struct udphdr *udp, const struct scan *data);

include/scan.h

@@ -2,6 +2,9 @@
 
 #include <stdint.h>
 
+#include "host.h"
+#include "response.h"
+
 typedef enum {
 	SCAN_SYN,
 	SCAN_NULL,
@@ -12,5 +15,13 @@ typedef enum {
 	SCAN_TCP,
 } e_scantype;
 
-int routine(const char *ip_addr, e_scantype type, uint16_t min_port,
-            uint16_t max_port);
+struct scan {
+	const struct host *host;
+	const char *dest_addr;
+	uint16_t port_start;
+	uint16_t port;
+	e_scantype type;
+	struct response *response;
+};
+
+int scan(const struct scan *data);

include/thread.h

@@ -0,0 +1,18 @@
+#pragma once
+
+#include <stdint.h>
+
+#include "host.h"
+#include "response.h"
+#include "scan.h"
+
+struct thread {
+	uint16_t port_start;
+	uint16_t port_end;
+	char *dest_addr;
+	e_scantype type;
+	struct host host;
+	struct response *responses;
+};
+
+void *routine(void *p_data);