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Annotation of embedaddon/libnet/src/libnet_build_sebek.c, revision 1.1.1.3

1.1       misho       1: /*
                      2:  *  libnet
                      3:  *  libnet_build_sebek.c - sebek packet assembler
                      4:  *
                      5:  *  Copyright (c) 2004 Frederic Raynal <pappy@security-labs.org>
                      6:  *  Copyright (c) 1998 - 2004 Mike D. Schiffman <mike@infonexus.com>
                      7:  *  All rights reserved.
                      8:  *
                      9:  * Redistribution and use in source and binary forms, with or without
                     10:  * modification, are permitted provided that the following conditions
                     11:  * are met:
                     12:  * 1. Redistributions of source code must retain the above copyright
                     13:  *    notice, this list of conditions and the following disclaimer.
                     14:  * 2. Redistributions in binary form must reproduce the above copyright
                     15:  *    notice, this list of conditions and the following disclaimer in the
                     16:  *    documentation and/or other materials provided with the distribution.
                     17:  *
                     18:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
                     19:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     20:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     21:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
                     22:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     23:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     24:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     25:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     26:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     27:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     28:  * SUCH DAMAGE.
                     29:  *
                     30:  */
                     31: 
1.1.1.3 ! misho      32: #include "common.h"
1.1       misho      33: 
                     34: libnet_ptag_t
1.1.1.2   misho      35: libnet_build_sebek(uint32_t magic, uint16_t version, uint16_t type, 
                     36: uint32_t counter, uint32_t time_sec, uint32_t time_usec, uint32_t pid,
                     37: uint32_t uid, uint32_t fd, uint8_t cmd[SEBEK_CMD_LENGTH], uint32_t length,
                     38: const uint8_t *payload, uint32_t payload_s, libnet_t *l, libnet_ptag_t ptag)
1.1       misho      39: {
1.1.1.2   misho      40:     uint32_t n;
1.1       misho      41:     libnet_pblock_t *p;
                     42:     struct libnet_sebek_hdr sebek_hdr;
                     43: 
                     44:     if (l == NULL)
                     45:     { 
                     46:         return (-1);
                     47:     } 
                     48: 
                     49:     n = LIBNET_SEBEK_H + payload_s;               /* size of memory 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_SEBEK_H);
                     56:     if (p == NULL)
                     57:     {
                     58:         return (-1);
                     59:     }
                     60: 
                     61:     memset(&sebek_hdr, 0, sizeof(sebek_hdr));
                     62:     sebek_hdr.magic     = htonl(magic);
                     63:     sebek_hdr.version   = htons(version);
                     64:     sebek_hdr.type      = htons(type);
                     65:     sebek_hdr.counter   = htonl(counter);
                     66:     sebek_hdr.time_sec  = htonl(time_sec);
                     67:     sebek_hdr.time_usec = htonl(time_usec);
                     68:     sebek_hdr.pid       = htonl(pid);
                     69:     sebek_hdr.uid       = htonl(uid);
                     70:     sebek_hdr.fd        = htonl(fd);
1.1.1.2   misho      71:     memcpy(sebek_hdr.cmd, cmd, SEBEK_CMD_LENGTH*sizeof(uint8_t));
1.1       misho      72:     sebek_hdr.length = htonl(length);
                     73: 
1.1.1.2   misho      74:     n = libnet_pblock_append(l, p, (uint8_t *)&sebek_hdr, LIBNET_SEBEK_H);
1.1       misho      75:     if (n == -1)
                     76:     {
                     77:         goto bad;
                     78:     }
                     79: 
1.1.1.2   misho      80:     /* boilerplate payload sanity check / append macro */
                     81:     LIBNET_DO_PAYLOAD(l, p);
1.1       misho      82:  
                     83:     return (ptag ? ptag : libnet_pblock_update(l, p, 0, LIBNET_PBLOCK_SEBEK_H));
                     84: bad:
                     85:     libnet_pblock_delete(l, p);
                     86:     return (-1);
                     87: }
1.1.1.3 ! misho      88: 
        !            89: /**
        !            90:  * Local Variables:
        !            91:  *  indent-tabs-mode: nil
        !            92:  *  c-file-style: "stroustrup"
        !            93:  * End:
        !            94:  */