diff options
Diffstat (limited to 'libnet/src/libnet_build_rip.c')
| -rw-r--r-- | libnet/src/libnet_build_rip.c | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/libnet/src/libnet_build_rip.c b/libnet/src/libnet_build_rip.c new file mode 100644 index 0000000..bc2dcbf --- /dev/null +++ b/libnet/src/libnet_build_rip.c @@ -0,0 +1,96 @@ +/* + * $Id: libnet_build_rip.c,v 1.9 2004/04/13 17:32:28 mike Exp $ + * + * libnet + * libnet_build_rip.c - RIP packet assembler + * + * Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + */ + +#if (HAVE_CONFIG_H) +#include "../include/config.h" +#endif +#if (!(_WIN32) || (__CYGWIN__)) +#include "../include/libnet.h" +#else +#include "../include/win32/libnet.h" +#endif + +libnet_ptag_t +libnet_build_rip(u_int8_t cmd, u_int8_t version, u_int16_t rd, u_int16_t af, +u_int16_t rt, u_int32_t addr, u_int32_t mask, u_int32_t next_hop, +u_int32_t metric, u_int8_t *payload, u_int32_t payload_s, libnet_t *l, +libnet_ptag_t ptag) +{ + u_int32_t n, h; + libnet_pblock_t *p; + struct libnet_rip_hdr rip_hdr; + + if (l == NULL) + { + return (-1); + } + + n = LIBNET_RIP_H + payload_s; + h = 0; + + /* + * Find the existing protocol block if a ptag is specified, or create + * a new one. + */ + p = libnet_pblock_probe(l, ptag, n, LIBNET_PBLOCK_RIP_H); + if (p == NULL) + { + return (-1); + } + + memset(&rip_hdr, 0, sizeof(rip_hdr)); + rip_hdr.rip_cmd = cmd; + rip_hdr.rip_ver = version; + rip_hdr.rip_rd = htons(rd); + rip_hdr.rip_af = htons(af); + rip_hdr.rip_rt = htons(rt); + rip_hdr.rip_addr = htonl(addr); + rip_hdr.rip_mask = htonl(mask); + rip_hdr.rip_next_hop = htonl(next_hop); + rip_hdr.rip_metric = htonl(metric); + + n = libnet_pblock_append(l, p, (u_int8_t *)&rip_hdr, LIBNET_RIP_H); + if (n == -1) + { + goto bad; + } + + /* boilerplate payload sanity check / append macro */ + LIBNET_DO_PAYLOAD(l, p); + + return (ptag ? ptag : libnet_pblock_update(l, p, h, LIBNET_PBLOCK_RIP_H)); +bad: + libnet_pblock_delete(l, p); + return (-1); +} + +/* EOF */ |