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 1.2.2.1 2011/10/31 09:46:18 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
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: struct sockaddr sa = { 0 }, *ba = NULL;
77: struct sockaddr_in *sin4;
78: struct sockaddr_in6 *sin6;
79: struct hostent *host;
80: char ch;
81: int h, len;
82: u_short id = ANSH_ID;
83:
84: srandomdev();
85: do {
86: Crypted = (u_int) random() % UINT_MAX;
87: } while (!Crypted);
88:
89: strlcpy(Key, DEFAULT_KEY, sizeof Key);
90:
91: while ((ch = getopt(argc, argv, "hvui:t:k:a:")) != -1)
92: switch (ch) {
93: case 'a':
94: host = gethostbyname(optarg);
95: if (!host) {
96: printf("Error:: in bind address '%s' #%d - %s\n",
97: optarg, h_errno, hstrerror(h_errno));
98: return 1;
99: }
100: switch (host->h_addrtype) {
101: case AF_INET:
102: ba = malloc(sizeof(struct sockaddr_in));
103: if (!ba) {
104: printf("Error:: malloc() #%d - %s ...\n",
105: errno, strerror(errno));
106: return 1;
107: } else {
108: memset(ba, 0, sizeof(struct sockaddr_in));
109: sin4 = (struct sockaddr_in*) ba;
110: }
111: sin4->sin_len = sizeof(struct sockaddr_in);
112: sin4->sin_family = AF_INET;
113: memcpy(&sin4->sin_addr.s_addr, host->h_addr, host->h_length);
114: break;
115: case AF_INET6:
116: ba = malloc(sizeof(struct sockaddr_in6));
117: if (!ba) {
118: printf("Error:: malloc() #%d - %s ...\n",
119: errno, strerror(errno));
120: return 1;
121: } else {
122: memset(ba, 0, sizeof(struct sockaddr_in6));
123: sin6 = (struct sockaddr_in6*) ba;
124: }
125: sin6->sin6_len = sizeof(struct sockaddr_in6);
126: sin6->sin6_family = AF_INET6;
127: memcpy(&sin6->sin6_addr.s6_addr, host->h_addr, host->h_length);
128: break;
129: default:
130: printf("Error:: Unknown address type %d !!!\n", host->h_addrtype);
131: return 1;
132: }
133: break;
134: case 't':
135: Timeout = abs(strtol(optarg, NULL, 0));
136: break;
137: case 'i':
138: id = strtol(optarg, NULL, 0);
139: break;
140: case 'k':
141: strlcpy(Key, optarg, sizeof Key);
142: break;
143: case 'u':
144: Crypted ^= Crypted;
145: break;
146: case 'v':
147: Verbose++;
148: break;
149: case 'h':
150: default:
151: Usage();
152: return 1;
153: }
154: argc -= optind;
155: argv += optind;
156: if (!argc) {
157: printf("Error:: not specified address for connect ...\n");
158: if (ba)
159: free(ba);
160: return 1;
161: }
162:
163: host = gethostbyname(argv[0]);
164: if (!host) {
165: printf("Error:: in bind address '%s' #%d - %s\n",
166: argv[0], h_errno, hstrerror(h_errno));
167: if (ba)
168: free(ba);
169: return 1;
170: }
171: switch (host->h_addrtype) {
172: case AF_INET:
173: sin4 = (struct sockaddr_in*) &sa;
174: sin4->sin_len = sizeof(struct sockaddr_in);
175: sin4->sin_family = AF_INET;
176: memcpy(&sin4->sin_addr.s_addr, host->h_addr, host->h_length);
177: break;
178: case AF_INET6:
179: sin6 = (struct sockaddr_in6*) &sa;
180: sin6->sin6_len = sizeof(struct sockaddr_in6);
181: sin6->sin6_family = AF_INET6;
182: memcpy(&sin6->sin6_addr.s6_addr, host->h_addr, host->h_length);
183: break;
184: default:
185: printf("Error:: Unknown address type %d !!!\n", host->h_addrtype);
186: if (ba)
187: free(ba);
188: return 1;
189: }
190:
191: h = PrepareL3(ba, &len);
192: if (h == -1) {
193: printf("Error:: Descriptor not opened ... \n");
194: if (ba)
195: free(ba);
196: return 1;
197: }
198:
199: ConnectL3(h, id, &sa, len);
200:
201: VERB(1) printf("\r\nFinish client.\r\n");
202: close(h);
203: if (ba)
204: free(ba);
205: return 0;
206: }
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