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ccaa1b97dd76c8f39f3126f554ffe5f247da9963 .. e75179f41c5d50dd62c60f572182b8178ed03e94 · 1 commits

base ccaa1b97dd76…
head e75179f41c5d…

Changed files

FileChanges
ping3 binary raw
ping3.c +110 −0 raw
ping_send binary raw

Commits

HashSubjectAuthorDate
e75179f4 Added new ping trigger programs Ryan Schanzenbacher
diff --git a/ping3 b/ping3
new file mode 100755
index 0000000..edb585c
Binary files /dev/null and b/ping3 differ
diff --git a/ping3.c b/ping3.c
new file mode 100644
index 0000000..f0dd858
--- /dev/null
+++ b/ping3.c
@@ -0,0 +1,110 @@
+#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;
+}
diff --git a/ping_send b/ping_send
new file mode 100644
index 0000000..37a2396
Binary files /dev/null and b/ping_send differ