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 1.4 2015/05/19 23:25:30 misho Exp $
7: *
8: *************************************************************************
9: The ELWIX and AITNET software is distributed under the following
10: terms:
11:
12: All of the documentation and software included in the ELWIX and AITNET
13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
14:
15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2013
16: by Michael Pounov <misho@elwix.org>. All rights reserved.
17:
18: Redistribution and use in source and binary forms, with or without
19: modification, are permitted provided that the following conditions
20: are met:
21: 1. Redistributions of source code must retain the above copyright
22: notice, this list of conditions and the following disclaimer.
23: 2. Redistributions in binary form must reproduce the above copyright
24: notice, this list of conditions and the following disclaimer in the
25: documentation and/or other materials provided with the distribution.
26: 3. All advertising materials mentioning features or use of this software
27: must display the following acknowledgement:
28: This product includes software developed by Michael Pounov <misho@elwix.org>
29: ELWIX - Embedded LightWeight unIX and its contributors.
30: 4. Neither the name of AITNET nor the names of its contributors
31: may be used to endorse or promote products derived from this software
32: without specific prior written permission.
33:
34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
37: ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
44: SUCH DAMAGE.
45: */
46: #include "global.h"
47: #include "ansh.h"
48:
49:
50: intptr_t Kill;
51: int Timeout, Verbose;
52: u_int Crypted;
53: char Key[STRSIZ];
54:
55: extern char compiled[], compiledby[], compilehost[];
56:
57: static void
58: Usage()
59: {
60: printf( " -= ansh3 =- ELWIX Layer3 remote management client over ICMP\n"
61: "=== %s === %s@%s ===\n\n"
62: " Syntax: ansh [options] <connect2host>\n\n"
63: "\t-a <address>\tBind to address\n"
64: "\t-i <id>\tService ID (default is 42)\n"
65: "\t-t <timeout>\tClient session timeout (default is 0 sec)\n"
66: "\t-k <key>\tService cipher key\n"
67: "\t-u\t\tSwitch to unencrypted traffic between hosts\n"
68: "\t-v\t\tVerbose (more -v, more verbosity ...)\n"
69: "\t-h\t\tThis help screen!\n"
70: "\n", compiled, compiledby, compilehost);
71: }
72:
73: int
74: main(int argc, char **argv)
75: {
76: sockaddr_t sa, ba;
77: struct hostent *host;
78: char ch;
79: int h, len;
80: u_short id = ANSH_ID;
81:
82: memset(&sa, 0, sizeof sa);
83: memset(&ba, 0, sizeof ba);
84:
85: srandomdev();
86: do {
87: Crypted = (u_int) random() % UINT_MAX;
88: } while (!Crypted);
89:
90: strlcpy(Key, DEFAULT_KEY, sizeof Key);
91:
92: while ((ch = getopt(argc, argv, "hvui:t:k:a:")) != -1)
93: switch (ch) {
94: case 'a':
95: host = gethostbyname(optarg);
96: if (!host) {
97: printf("Error:: in bind address '%s' #%d - %s\n",
98: optarg, h_errno, hstrerror(h_errno));
99: return 1;
100: }
101: switch (host->h_addrtype) {
102: case AF_INET:
103: ba.sin.sin_len = sizeof(struct sockaddr_in);
104: ba.sin.sin_family = AF_INET;
105: memcpy(&ba.sin.sin_addr.s_addr, host->h_addr, host->h_length);
106: break;
107: case AF_INET6:
108: ba.sin6.sin6_len = sizeof(struct sockaddr_in6);
109: ba.sin6.sin6_family = AF_INET6;
110: memcpy(&ba.sin6.sin6_addr.s6_addr, host->h_addr, host->h_length);
111: break;
112: default:
113: printf("Error:: Unknown address type %d !!!\n", host->h_addrtype);
114: return 1;
115: }
116: break;
117: case 't':
118: Timeout = abs(strtol(optarg, NULL, 0));
119: break;
120: case 'i':
121: id = strtol(optarg, NULL, 0);
122: break;
123: case 'k':
124: strlcpy(Key, optarg, sizeof Key);
125: break;
126: case 'u':
127: Crypted ^= Crypted;
128: break;
129: case 'v':
130: Verbose++;
131: break;
132: case 'h':
133: default:
134: Usage();
135: return 1;
136: }
137: argc -= optind;
138: argv += optind;
139: if (!argc) {
140: printf("Error:: not specified address for connect ...\n");
141: return 1;
142: }
143:
144: host = gethostbyname(argv[0]);
145: if (!host) {
146: printf("Error:: in bind address '%s' #%d - %s\n",
147: argv[0], h_errno, hstrerror(h_errno));
148: return 1;
149: }
150: switch (host->h_addrtype) {
151: case AF_INET:
152: sa.sin.sin_len = sizeof(struct sockaddr_in);
153: sa.sin.sin_family = AF_INET;
154: memcpy(&sa.sin.sin_addr.s_addr, host->h_addr, host->h_length);
155: break;
156: case AF_INET6:
157: sa.sin6.sin6_len = sizeof(struct sockaddr_in6);
158: sa.sin6.sin6_family = AF_INET6;
159: memcpy(&sa.sin6.sin6_addr.s6_addr, host->h_addr, host->h_length);
160: break;
161: default:
162: printf("Error:: Unknown address type %d !!!\n", host->h_addrtype);
163: return 1;
164: }
165:
166: h = PrepareL3(&ba, &len);
167: if (h == -1) {
168: printf("Error:: Descriptor not opened ... \n");
169: return 1;
170: }
171:
172: ConnectL3(h, id, &sa, len);
173:
174: VERB(1) printf("\r\nFinish client.\r\n");
175: close(h);
176: return 0;
177: }
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