From f64f7de412dd06affb0670831bdd117bde33a192 Mon Sep 17 00:00:00 2001
From: Franciszek Malinka <franciszek.malinka@gmail.com>
Date: Tue, 6 Apr 2021 14:28:27 +0200
Subject: Update

---
 Semestr 4/sieci/pracownia1/icmp_receive.c | 53 -------------------------------
 1 file changed, 53 deletions(-)
 delete mode 100644 Semestr 4/sieci/pracownia1/icmp_receive.c

(limited to 'Semestr 4/sieci/pracownia1/icmp_receive.c')

diff --git a/Semestr 4/sieci/pracownia1/icmp_receive.c b/Semestr 4/sieci/pracownia1/icmp_receive.c
deleted file mode 100644
index 07d3b69..0000000
--- a/Semestr 4/sieci/pracownia1/icmp_receive.c	
+++ /dev/null
@@ -1,53 +0,0 @@
-#include <netinet/ip.h>
-#include <arpa/inet.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-
-
-void print_as_bytes (unsigned char* buff, ssize_t length)
-{
-	for (ssize_t i = 0; i < length; i++, buff++)
-		printf ("%.2x ", *buff);	
-}
-
-
-int main()
-{
-	int sockfd = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP);
-	if (sockfd < 0) {
-		fprintf(stderr, "socket error: %s\n", strerror(errno)); 
-		return EXIT_FAILURE;
-	}
-
-	for (;;) {
-		
-		struct sockaddr_in 	sender;	
-		socklen_t 			sender_len = sizeof(sender);
-		u_int8_t 			buffer[IP_MAXPACKET];
-
-		ssize_t packet_len = recvfrom (sockfd, buffer, IP_MAXPACKET, 0, (struct sockaddr*)&sender, &sender_len);
-		if (packet_len < 0) {
-			fprintf(stderr, "recvfrom error: %s\n", strerror(errno)); 
-			return EXIT_FAILURE;
-		}
-
-		char sender_ip_str[20]; 
-		inet_ntop(AF_INET, &(sender.sin_addr), sender_ip_str, sizeof(sender_ip_str));
-		printf ("Received IP packet with ICMP content from: %s\n", sender_ip_str);
-
-		struct ip* 			ip_header = (struct ip*) buffer;
-		ssize_t				ip_header_len = 4 * ip_header->ip_hl;
-
-		printf ("IP header: "); 
-		print_as_bytes (buffer, ip_header_len);
-		printf("\n");
-
-		printf ("IP data:   ");
-		print_as_bytes (buffer + ip_header_len, packet_len - ip_header_len);
-		printf("\n\n");
-	}
-
-	return EXIT_SUCCESS;
-}
-- 
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