1: /*
2: * $Id: libnet_build_data.c,v 1.1.1.3 2023/09/27 11:11:38 misho Exp $
3: *
4: * libnet
5: * libnet_build_data.c - generic data block builder
6: *
7: * Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com>
8: * All rights reserved.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22: * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29: * SUCH DAMAGE.
30: *
31: */
32:
33: #include "common.h"
34:
35: /* FIXME this won't work with TCP or IPv4 data, which is probably a bug */
36: libnet_ptag_t
37: libnet_build_data(const uint8_t *payload, uint32_t payload_s, libnet_t *l,
38: libnet_ptag_t ptag)
39: {
40: uint32_t n, h;
41: libnet_pblock_t *p;
42:
43: if (l == NULL)
44: {
45: return (-1);
46: }
47:
48: n = payload_s;
49: h = 0; /* no checksum on generic block */
50:
51: /*
52: * Find the existing protocol block if a ptag is specified, or create
53: * a new one.
54: */
55: p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_DATA_H);
56: if (p == NULL)
57: {
58: return (-1);
59: }
60:
61: /* boilerplate payload sanity check / append macro */
62: LIBNET_DO_PAYLOAD(l, p);
63:
64: return (ptag ? ptag : libnet_pblock_update(l, p, h, LIBNET_PBLOCK_DATA_H));
65: bad:
66: libnet_pblock_delete(l, p);
67: return (-1);
68: }
69:
70: /**
71: * Local Variables:
72: * indent-tabs-mode: nil
73: * c-file-style: "stroustrup"
74: * End:
75: */
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>