Annotation of embedaddon/libnet/src/libnet_advanced.c, revision 1.1.1.3
1.1 misho 1: /*
1.1.1.2 misho 2: * $Id: libnet_advanced.c,v 1.8 2004/11/09 07:05:07 mike Exp $
1.1 misho 3: *
4: * libnet
5: * libnet_advanced.c - Advanced routines
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:
1.1.1.3 ! misho 33: #include "common.h"
1.1 misho 34:
35: int
1.1.1.2 misho 36: libnet_adv_cull_packet(libnet_t *l, uint8_t **packet, uint32_t *packet_s)
1.1 misho 37: {
38: *packet = NULL;
39: *packet_s = 0;
40:
41: if (l->injection_type != LIBNET_LINK_ADV)
42: {
43: snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
1.1.1.3 ! misho 44: "%s(): advanced link mode not enabled", __func__);
1.1 misho 45: return (-1);
46: }
47:
48: /* checksums will be written in */
49: return (libnet_pblock_coalesce(l, packet, packet_s));
50: }
51:
52: int
1.1.1.2 misho 53: libnet_adv_cull_header(libnet_t *l, libnet_ptag_t ptag, uint8_t **header,
54: uint32_t *header_s)
1.1 misho 55: {
56: libnet_pblock_t *p;
57:
58: *header = NULL;
59: *header_s = 0;
60:
61: if (l->injection_type != LIBNET_LINK_ADV)
62: {
63: snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
1.1.1.3 ! misho 64: "%s(): advanced link mode not enabled", __func__);
1.1 misho 65: return (-1);
66: }
67:
68: p = libnet_pblock_find(l, ptag);
69: if (p == NULL)
70: {
71: snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
1.1.1.3 ! misho 72: "%s(): ptag not found, you sure it exists?", __func__);
1.1 misho 73: return (-1);
74: }
75: *header = p->buf;
76: *header_s = p->b_len;
77:
78: return (1);
79: }
80:
81: int
1.1.1.2 misho 82: libnet_adv_write_link(libnet_t *l, const uint8_t *packet, uint32_t packet_s)
1.1 misho 83: {
84: int c;
85:
86: if (l->injection_type != LIBNET_LINK_ADV)
87: {
88: snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
1.1.1.3 ! misho 89: "%s(): advanced link mode not enabled", __func__);
1.1 misho 90: return (-1);
91: }
92: c = libnet_write_link(l, packet, packet_s);
93:
94: /* do statistics */
95: if (c == packet_s)
96: {
97: l->stats.packets_sent++;
98: l->stats.bytes_written += c;
99: }
100: else
101: {
102: l->stats.packet_errors++;
103: /*
104: * XXX - we probably should have a way to retrieve the number of
105: * bytes actually written (since we might have written something).
106: */
107: if (c > 0)
108: {
109: l->stats.bytes_written += c;
110: }
111: }
112: return (c);
113: }
114:
1.1.1.2 misho 115: int
116: libnet_adv_write_raw_ipv4(libnet_t *l, const uint8_t *packet, uint32_t packet_s)
117: {
118: int c;
119:
120: if (l->injection_type != LIBNET_RAW4_ADV)
121: {
122: snprintf(l->err_buf, LIBNET_ERRBUF_SIZE,
1.1.1.3 ! misho 123: "%s(): advanced raw4 mode not enabled", __func__);
1.1.1.2 misho 124: return (-1);
125: }
126: c = libnet_write_raw_ipv4(l, packet, packet_s);
127:
128: /* do statistics */
129: if (c == packet_s)
130: {
131: l->stats.packets_sent++;
132: l->stats.bytes_written += c;
133: }
134: else
135: {
136: l->stats.packet_errors++;
137: /*
138: * XXX - we probably should have a way to retrieve the number of
139: * bytes actually written (since we might have written something).
140: */
141: if (c > 0)
142: {
143: l->stats.bytes_written += c;
144: }
145: }
146: return (c);
147: }
148:
1.1 misho 149: void
1.1.1.2 misho 150: libnet_adv_free_packet(libnet_t *l, uint8_t *packet)
1.1 misho 151: {
152: /*
153: * Restore original pointer address so free won't complain about a
154: * modified chunk pointer.
155: */
156: if (l->aligner > 0)
157: {
158: packet = packet - l->aligner;
159: }
160: free(packet);
161: }
162:
1.1.1.3 ! misho 163: /**
! 164: * Local Variables:
! 165: * indent-tabs-mode: nil
! 166: * c-file-style: "stroustrup"
! 167: * End:
! 168: */
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