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finish icmp service!!!

    1: /*************************************************************************
    2:  * (C) 2011 AITNET - Sofia/Bulgaria - <office@aitnet.org>
    3:  *  by Michael Pounov <misho@elwix.org>
    4:  *
    5:  * $Author: misho $
    6:  * $Id: ansh3.c,v 1.1.1.1.2.2 2011/10/07 13:41:26 misho Exp $
    7:  *
    8:  *************************************************************************/
    9: #include "global.h"
   10: #include "ansh.h"
   11: 
   12: 
   13: int Timeout, Verbose, Kill;
   14: u_int Crypted;
   15: 
   16: extern char compiled[], compiledby[], compilehost[];
   17: 
   18: static void
   19: Usage()
   20: {
   21: 	printf(	" -= ansh =- ELWIX Layer3 remote management client over ICMP\n"
   22: 		"=== %s === %s@%s ===\n\n"
   23: 		" Syntax: ansh [options] <connect2host>\n\n"
   24: 		"\t-i <id>\tService ID (default is 42)\n"
   25: 		"\t-t <timeout>\tClient session timeout (default is 0 sec)\n"
   26: 		"\t-u\t\tSwitch to unencrypted traffic between hosts\n"
   27: 		"\t-v\t\tVerbose (more -v, more verbosity ...)\n"
   28: 		"\t-h\t\tThis help screen!\n"
   29: 		"\n", compiled, compiledby, compilehost);
   30: }
   31: 
   32: int
   33: main(int argc, char **argv)
   34: {
   35: 	struct sockaddr sa = { 0 };
   36: 	struct sockaddr_in *sin4 = (struct sockaddr_in*) &sa;
   37: 	struct sockaddr_in6 *sin6 = (struct sockaddr_in6*) &sa;
   38: 	struct hostent *host;
   39: 	char ch;
   40: 	int h, len;
   41: 	u_short id = ANSH_ID;
   42: 
   43: 	srandomdev();
   44: 	do {
   45: 		Crypted = (u_int) random() % UINT_MAX;
   46: 	} while (!Crypted);
   47: 
   48: 	while ((ch = getopt(argc, argv, "hvui:t:")) != -1)
   49: 		switch (ch) {
   50: 			case 't':
   51: 				Timeout = abs(strtol(optarg, NULL, 0));
   52: 				break;
   53: 			case 'i':
   54: 				id = strtol(optarg, NULL, 0);
   55: 				break;
   56: 			case 'u':
   57: 				Crypted ^= Crypted;
   58: 				break;
   59: 			case 'v':
   60: 				Verbose++;
   61: 				break;
   62: 			case 'h':
   63: 			default:
   64: 				Usage();
   65: 				return 1;
   66: 		}
   67: 	argc -= optind;
   68: 	argv += optind;
   69: 	if (!argc) {
   70: 		printf("Error:: not specified address for connect ...\n");
   71: 		return 1;
   72: 	}
   73: 
   74: 	host = gethostbyname(argv[0]);
   75: 	if (!host) {
   76: 		printf("Error:: in bind address '%s' #%d - %s\n",
   77: 				argv[0], h_errno, hstrerror(h_errno));
   78: 		return 1;
   79: 	}
   80: 	switch (host->h_addrtype) {
   81: 		case AF_INET:
   82: 			sin4->sin_len = sizeof(struct sockaddr_in);
   83: 			sin4->sin_family = AF_INET;
   84: 			memcpy(&sin4->sin_addr.s_addr, host->h_addr, host->h_length);
   85: 			break;
   86: 		case AF_INET6:
   87: 			sin6->sin6_len = sizeof(struct sockaddr_in6);
   88: 			sin6->sin6_family = AF_INET6;
   89: 			memcpy(&sin6->sin6_addr.s6_addr, host->h_addr, host->h_length);
   90: 			break;
   91: 		default:
   92: 			printf("Error:: Unknown address type %d !!!\n", host->h_addrtype);
   93: 			return 1;
   94: 	}
   95: 
   96: 	h = PrepareL3(&sa, &len);
   97: 	if (h == -1) {
   98: 		printf("Error:: Descriptor not opened ... \n");
   99: 		return 1;
  100: 	}
  101: 
  102: 	ConnectL3(h, id, &sa, len);
  103: 
  104: 	VERB(1) printf("\nFinish client.\n");
  105: 	close(h);
  106: 	return 0;
  107: }