projects / OpenSPARC-T2-DV / blame
| Commit | Line | Data |
|---|---|---|
| 86530b38 AT |
1 | /* |
| 2 | * $Id: libnet_build_data.c,v 1.20 2005/11/29 22:05:41 carlosc 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 | #if (HAVE_CONFIG_H) | |
| 34 | #include "../include/config.h" | |
| 35 | #endif | |
| 36 | #if (!(_WIN32) || (__CYGWIN__)) | |
| 37 | #include "../include/libnet.h" | |
| 38 | #else | |
| 39 | #include "../include/win32/libnet.h" | |
| 40 | #endif | |
| 41 | ||
| 42 | ||
| 43 | libnet_ptag_t | |
| 44 | libnet_build_data(u_int8_t *payload, u_int32_t payload_s, libnet_t *l, | |
| 45 | libnet_ptag_t ptag) | |
| 46 | { | |
| 47 | u_int32_t n, h; | |
| 48 | libnet_pblock_t *p; | |
| 49 | ||
| 50 | if (l == NULL) | |
| 51 | { | |
| 52 | return (-1); | |
| 53 | } | |
| 54 | ||
| 55 | n = payload_s; | |
| 56 | h = 0; /* no checksum on generic block */ | |
| 57 | ||
| 58 | /* | |
| 59 | * Find the existing protocol block if a ptag is specified, or create | |
| 60 | * a new one. | |
| 61 | */ | |
| 62 | p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_DATA_H); | |
| 63 | if (p == NULL) | |
| 64 | { | |
| 65 | return (-1); | |
| 66 | } | |
| 67 | ||
| 68 | if ((payload && !payload_s) || (!payload && payload_s)) | |
| 69 | { | |
| 70 | snprintf(l->err_buf, LIBNET_ERRBUF_SIZE, | |
| 71 | "%s(): payload inconsistency\n", __func__); | |
| 72 | goto bad; | |
| 73 | } | |
| 74 | ||
| 75 | if (payload && payload_s) | |
| 76 | { | |
| 77 | n = libnet_pblock_append(l, p, payload, payload_s); | |
| 78 | if (n == -1) | |
| 79 | { | |
| 80 | goto bad; | |
| 81 | } | |
| 82 | } | |
| 83 | ||
| 84 | return (ptag ? ptag : libnet_pblock_update(l, p, h, LIBNET_PBLOCK_DATA_H)); | |
| 85 | bad: | |
| 86 | libnet_pblock_delete(l, p); | |
| 87 | return (-1); | |
| 88 | } | |
| 89 | ||
| 90 | /* EOF */ |