From b9ef8fbd63fface91ff3cd98d7d702f9827c322d Mon Sep 17 00:00:00 2001
From: Ryan Schanzenbacher <ryan@rschanz.org>
Date: Mon, 20 Mar 2023 18:03:45 -0400
Subject: organization

---
 ping3.c | 110 ----------------------------------------------------------------
 1 file changed, 110 deletions(-)
 delete mode 100644 ping3.c

(limited to 'ping3.c')

diff --git a/ping3.c b/ping3.c
deleted file mode 100644
index f0dd858..0000000
--- a/ping3.c
+++ /dev/null
@@ -1,110 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netdb.h>
-#include <netinet/in.h>
-#include <netinet/in_systm.h>
-#include <netinet/ip.h>
-#include <netinet/ip_icmp.h>
-#include <string.h>
-#include <arpa/inet.h>
-#include <sys/select.h>
-
-unsigned short cksum(unsigned short *addr, int len);
-
-int main(int argc, char *argv[]) {
-    int sock;
-    char send_buf[400], src_ip[15], dst_ip[15], src_name[256];
-    struct ip *ip = (struct ip *)send_buf;
-    struct icmp *icmp = (struct icmp *)(ip + 1);
-    struct hostent *src_hp, *dst_hp;
-    struct sockaddr_in src, dst;
-    int on = 1;
-    memset(send_buf, 0, sizeof(send_buf));
-
-    if (argc < 2) {
-        printf("Need arg. I\n");
-        exit(EXIT_FAILURE);
-    }
-
-    /**if (getuid() == 0) {
-        fprintf(stderr, "Need to elevate\n");
-        exit(EXIT_FAILURE);
-    } **/
-    
-    gethostname(src_name, sizeof(src_name));
-    printf("%s\n", src_name);
-    src_hp = gethostbyname(src_name);
-    ip->ip_src = (*(struct in_addr *)src_hp->h_addr_list[0]);
-
-    dst_hp = gethostbyname(argv[1]);
-    ip->ip_dst = (*(struct in_addr *)dst_hp->h_addr);
-    dst.sin_addr = (*(struct in_addr *)dst_hp->h_addr);
-
-    sprintf(src_ip, "%s", inet_ntoa(ip->ip_src));
-    sprintf(dst_ip, "%s", inet_ntoa(ip->ip_dst));
-    printf("Src: %s -- Dst: %s\n", src_ip, dst_ip);
-
-    // Create socket
-    sock = socket(AF_INET, SOCK_RAW, IPPROTO_RAW);
-
-    setsockopt(sock, IPPROTO_IP, IP_HDRINCL, &on, sizeof(on));
-
-    // IP Structure
-    ip->ip_v = 4;
-    ip->ip_hl = 5;
-    ip->ip_tos = 0;
-    ip->ip_len = htons(sizeof(send_buf));
-    ip->ip_id = htons(321);
-    ip->ip_off = htons(0);
-    ip->ip_ttl = 255;
-    ip->ip_p = IPPROTO_ICMP;
-    ip->ip_sum = 0;
-
-    // ICMP Structure
-    icmp->icmp_type = 2;
-    icmp->icmp_code = 0;
-    
-    dst.sin_family = AF_INET;
-
-    ip->ip_sum = cksum((unsigned short *)send_buf, ip->ip_hl);
-    icmp->icmp_cksum = cksum((unsigned short *)icmp, sizeof(send_buf) - sizeof(struct icmp));
-
-    int dst_addr_len = sizeof(dst);
-    int bytes_sent;
-
-    if((bytes_sent = sendto(sock, send_buf, sizeof(send_buf), 0, (struct sockaddr *)&dst, dst_addr_len)) < 0) {
-        perror("send err");
-        fflush(stdout);
-    }
-    else {
-        printf("Sent %d bytes\n", bytes_sent);
-    }
-
-
-}
-
-unsigned short cksum(unsigned short *addr, int len) {
-    int nleft = len;
-    int sum = 0;
-    unsigned short *w = addr;
-    unsigned short answer = 0;
-
-    while (nleft > 1) {
-        sum += *w++;
-        nleft -= 2;
-    }
-
-    if (nleft == 1) {
-        *(unsigned char *)(&answer) = *(unsigned char *)w;
-        sum += answer;
-    }
-
-    sum = (sum >> 16) + (sum & 0xffff);
-    sum += (sum >> 16);
-    answer = ~sum;
-
-    return answer;
-}
-- 
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